Title of Invention	"A RECOVERY CRANE."
Abstract	This invention relates to a recovery crane which can particularly be used on highways for lifting and towing wreckage of accidental buses, trucks, etc. of weight upto 10tons and length upto 12m. The crane has 110 HP six cylinder, preferably four cylinder, water cooled engine, having gear box (2) and auxiliary gear box (3). The propeller shaft (29) providing power from auxiliary gear box (3) to front axle (19) and propeller shaft (30) providing power from auxiliary gear box (3) to the rear axle (20). The crane has front cabin (5) and rear cabin (6) housing different controls. The boom (7) is a two part telescopic boom which can be raised to 64 degrees and is provided with a 16-ton hook. The rear body (23) of the crane is attached to front body (24) through articulation joints (26). The outriggers (16) and counter weight (25) provide stability to the crane during crane operation. The crane has disturbed stability mechanism (27) and overloading safety device (28) to prevent toppling of crane in case of overloading.

Title of Invention

"A RECOVERY CRANE."

Abstract

This invention relates to a recovery crane which can particularly be used on highways for lifting and towing wreckage of accidental buses, trucks, etc. of weight upto 10tons and length upto 12m. The crane has 110 HP six cylinder, preferably four cylinder, water cooled engine, having gear box (2) and auxiliary gear box (3). The propeller shaft (29) providing power from auxiliary gear box (3) to front axle (19) and propeller shaft (30) providing power from auxiliary gear box (3) to the rear axle (20). The crane has front cabin (5) and rear cabin (6) housing different controls. The boom (7) is a two part telescopic boom which can be raised to 64 degrees and is provided with a 16-ton hook. The rear body (23) of the crane is attached to front body (24) through articulation joints (26). The outriggers (16) and counter weight (25) provide stability to the crane during crane operation. The crane has disturbed stability mechanism (27) and overloading safety device (28) to prevent toppling of crane in case of overloading.

Full Text	FIELD OF INVENTION This invention relates to a recovery crane, particularly, but without implying any limitation, for lifting and towing wreckage of accidental buses, trucks etc. on highways. PRIOR ART Cranes are basically an equipment for material handling in terms of loading, unloading, transporting and stocking. They are used in all such areas, which require handling of materials such as steel stockyards for handling steel sections, pipes, plates, bars, ingots, sheets etc., construction sites for building of structures, roof repairs, road works and plant maintenance, engineering industries for transportation of machinery and equipment, shipping industry and ports for handling containers, general cargo and pressure vessels, and highway clearance for lifting and dragging of accidental vehicles including trucks and buses. Depending on the applications, the cranes can be broadly classified into groups like Tower cranes, Gantry cranes, Electric overhead cranes, crawler cranes, Truck mounted cranes, self propelled mobile cranes. Tower cranes are fixed cranes, which are built up of frames and can be used for very high heights to gain access to rooftops and high rise buildings. Gantry cranes are mobile cranes for shifting heavy load like containers at Ports, docks, etc. Electric overhead cranes are fixed cranes generally installed in factories at roof heights. Crawler cranes are mobile cranes fitted with tracks for increased load-handling capability and improved stability on poor ground conditions. Truck mounted cranes are fixed cranes mounted on truck chassis and are generally used for stacking of load on truck and moving long distances. Self-propelled mobile cranes are mobile self-propelled wheel mounted cranes capable of movement on the site as well as for intra-site movement. Among the self propelled mobile cranes, there are 360 degree slew rough terrain cranes, 360 degrees slew all terrain cranes, 360 degrees slew truck mounted mobile cranes, non-slew self propelled articulated cranes etc. 360 degree slew rough terrain cranes are capable of negotiating steeper slopes, have excellent rough terrain capability, medium speed upto 40 kmph and the boom can be rotated through full 360 degrees for positioning of loads. 360 degress slew all terrain cranes have limited rough terrain ability, high speed of the order of 80-90kmph, high maneuverability and multi-axles suitable for high way travel. 360 degree slew truck mounted mobile crane are mounted on truck chassis, have limited terrain capability, high speed of the order of 80-90 kmph, boom can be rotated through 360 degrees and are suitable for high way travel. Non-slew self propelled articulated cranes are provided with a diesel engine of 50-100 HP connected to a gear box through a single plate heavy duty friction type clutch. The output of the gearbox is given to a rear drive axle. The steering of vehicle is through articulation of front and rear bodies which is hydraulically controlled through two double acting cylinders. The front body is provided with a two-part box type boom for handling the load. The inner boom section is extended hydraulically for increasing reach and height. The boom end is provided with a snatch block, fitted with a hook for lifting/lowering load which is accomplished with a hydraulic motor. All load handling functions are generally hydraulic. The hydraulic system consists of an engine driven pump with control valve for operation of various functions. A disadvantage of the above-mentioned non-slew self-propelled crane is that it has to be moved for placement of load. Another disadvantage of the above mentioned crane is that it has a low speed. Still another disadvantage of the above-mentioned crane is that its boom has limited reach and height. Further disadvantage of the above crane is that it cannot be used for dragging etc. OBJECTS OF PRESENT INVENTION An object of the present invention is to provide a non-slew self propelled articulated crane as a recovery crane capable of lifting and dragging wreckages of accidental vehicles including trucks and buses on highways, upto the weight of 10 tonnes and upto the size of 12m long. Another object of this invention is to provide a crane, which is capable of plying on highways at a cruising speed upto 40 kmph. Still another object of this invention is to provide a crane wherein the driver should be able to position himself in such a way that wreckage should be in front during clearing but should not be in front of the driver during towing and he should face the direction of movement during towing. Further object of this invention is to provide a crane which has ergonomically located controls and property designed operator cabin with all around visibility-Yet further object of this invention is to provide a crane which is cost effective. Still further object of this invention is to provide a crane which is provided with outriggers for adequate stability. Yet further object of this invention is to provide a crane which has gradeability in 12.5% laden condition. STATEMENT OF INVENTION According to this invention there is provided a recovery crane comprising six-cylinder, preferably four chlinder water cooled engine provided with gear box having six forward speed gears and one reverse gear, a two speed auxiliary gear box to change speed from high to low and vice-versa and a propeller shaft providing power from gear box to auxiliary gear box a propeller shaft providing power to front axle and propeller shaft providing power to rear axle. Front cabin housing driving controls like engine accelerator, clutch pedal, brake pedal, parking brake pedal, parking brake lever and dash board. Rear cabin housing controls for crane functions like boom lifting and extension, outriggers, hoisting winch and dragging winch telescopic boom capable of being raised to 64 degrees and provided with fixed-hook-16ton a hook dragging attached to dragging winch a snatch block assembly provided at the end of boom lift cylinder connecting boom to rear chassis chain carrying tray a tow bar assembly a hydraulic tank and fuel tank fitted to front chassis rear body connected to front body through articulation joints counter weight attached to the front of front body a disturbed stability mechanism fitted on front axle an overloading safety device fitted on to the lift cylinder and hoist winch. DESCRIPTION OF FIGURES This invention will now be illustrated with accompanying figure which illustrate an embodiment of present invention and is not intended to be taken restrictively to imply any limitation on the scope of the present invention. In the accompanying figure: Fig. 1: shows the construction of the crane of present invention; DETAILED DESCRIPTION OF INVENTION W.R.T. DRAWINGS According to this invention, a recovery crane is provided which comprises a six cylinder, preferably four cylinder water cooled engine (1) of 110 HP fitted on front chassis which drives crane and also gives power to crane actuators like boom (7), winch hoist (9), winch dragging (10), outriggers (16), etc. The engine is connected to gear box (2) through a single plate 14 inches clutch. The gear box (2) has four forward speed gears and one reverse gear. Auxiliary gear box (3) is a two speed auxiliary gear box situated in front chassis to change speed from high to low and vice-versa. It also provides two/four wheel drive to the vehicle for different ground conditions. The propeller shaft (4) provides power from the gear box (2) to the auxiliary gear box (3). The propeller shaft (29) provides power from the auxiliary gear box (3) to the front axle (19) and propeller shaft (30) provides power form the auxiliary gear box (3) to the rear axle (20) for traveling function. The front cabin (5) is fitted on the right hand side of the front chassis and houses various controls used for driving the vehicle like the engine accelerator, clutch pedal, brake pedal, parking brake lever, dash board and instruments for driving. The rear cabin (6) is fitted on the left hand side of rear chassis and houses the controls for crane iunctions like boom lifting and extension, outriggers (16) and hoisting winch (9) and dragging winch (10). The boom (7) is a two part telescopic boom and can be raised to an angle of 64 degrees. It is provided with a fixed hook-16 ton (21) for lifting 16ton load and a hook dragging (22) attached to the dragging winch (10) through a dragging wire for dragging the load. A snatch block assembly (8) is provided at the end of the said boom for hoisting the load up and down. The lift cylinder (11) connects the rear chassis to the boom (7) and gives angular movement to the boom assembly. The front tyres (12) are fitted on the front axle (19) and there are two tyres on each side. Rear tyres (13) are fitted on the rear axle (20) and there are two tyres on each side. Chain carrying tray (14) houses the tools and tackles for recovery application. A tow bar assembly (15) is fitted near the rear of the rear chassis and is used for towing the recovered vehicle. There are two outriggers (16) fitted on the rear chassis which consist of two telescope boxes which move up and down in the rear chassis through two hydraulic cylinders. These outriggers (16) provide stability to the crane while dragging and not transferring the load to the rear axle during dragging operation. A hydraulic tank (17) fitted to the front chassis, contains hydraulic oil for the hydraulic system on the crane. Fuel tank (18) also fitted on the front chassis, contains diesel for the operation of the engine on the crane. The rear body (23) of the crane of the present invention, is attached to the front body (24) through articulation joints (26) and supports boom assembly, lift cylinder, rear cabin, dragging winch, outriggers (16) and rear axle. The front body (24) is attached to the rear body (23) through articulation joints (26) and supports front cabin, engine, radiator, hydraulic tank (17), fuel tank (18) counter weight (25), gear box, auxiliary gear box and front axle. Counter weight (25) which are the dead weights attached to the front of the front body, are provided to give stability to the crane during crane operation. A disturbed stability mechanism (27) fitted on the front axle, is a safety feature incorporated in the crane design, and gives warning to operator when ever front tyres and axles get lifted from the ground which may result in toppling of crane in case of over loading. An over loading safety device (28) is fitted on the lift cylinder (11) and hoist winch (9) which gives indication to the operator in the rear cabin, in case of overloading through lift cylinder or hoist winch. It is to be noted that the present invention is susceptible to modifications, changes and adaptations by those skilled in the art. Such variant embodiments incorporating the concepts and features of the present invention, are intended to be within the scope of the present invention, which is further set forth under the following claims:- WE CLAIM; 1. A recovery crane comprising- (a) six-cylinder water cooled engine (1), provided with gear box (2) having four forward speed gears and one reverse gear, a two speed auxiliary gear box (3) to change speed from high to low and vice-versa and a propeller shaft (4) providing power from gear box (2) to auxiliary gear box (3), a propeller shaft (29) providing power to front axle (19) and a propeller shaft (30) providing power to rear axle (20); (b) front cabin (5) housing driving controls like engine accelerator, clutch pedal, brake pedal, parking brake pedal, parking brake lever and dash board; (c) rear cabin (6) housing controls for crane functions like boom lifting and extension, outriggers (16), hoisting winch (9) and dragging winch (10); (d) telescopic boom (7) capable of being raised to 64 degrees and provided with fixed-hook-16 ton (21), a hook dragging (22) attached to dragging winch (10); (e) a snatch block assembly (8) provided at the end of boom (7); (f) lift cylinder (11) connecting boom (7) to rear chassis; (g) chain carrying tray (14); (h) a tow bar assembly (15); (i) a hydraulic tank (17) and fuel tank (18) fitted to front chassis; (j) rear body (23) connected to front body (24) through articulation joints (26); (k) counter weight (25) attached to the front of front body; (1) a disturbed stability mechanism (27) fitted on front axle (19); (m) an overloading safety device (28) fitted on to the lift cylinder (11) and hoist winch (9); 2. A recovery crane as claimed in claim 1, wherein engine has 110 HP. 3. A recovery crane as claimed in claim 1 wherein engine has preferably four cylinder. 4. A crane as substantially described and illustrated herein.

Full Text

FIELD OF INVENTION
This invention relates to a recovery crane, particularly, but without implying any limitation, for lifting and towing wreckage of accidental buses, trucks etc. on highways.
PRIOR ART
Cranes are basically an equipment for material handling in terms of loading, unloading, transporting and stocking. They are used in all such areas, which require handling of materials such as steel stockyards for handling steel sections, pipes, plates, bars, ingots, sheets etc., construction sites for building of structures, roof repairs, road works and plant maintenance, engineering industries for transportation of machinery and equipment, shipping industry and ports for handling containers, general cargo and pressure vessels, and highway clearance for lifting and dragging of accidental vehicles including trucks and buses.
Depending on the applications, the cranes can be broadly classified into groups like Tower cranes, Gantry cranes, Electric overhead cranes, crawler cranes, Truck mounted cranes, self propelled mobile cranes. Tower cranes are fixed cranes, which are built up of frames and can be used for very high heights to gain access to rooftops and high rise
buildings. Gantry cranes are mobile cranes for shifting heavy load like containers at Ports, docks, etc. Electric overhead cranes are fixed cranes generally installed in factories at roof heights. Crawler cranes are mobile cranes fitted with tracks for increased load-handling capability and improved stability on poor ground conditions.
Truck mounted cranes are fixed cranes mounted on truck chassis and are generally used for stacking of load on truck and moving long distances. Self-propelled mobile cranes are mobile self-propelled wheel mounted cranes capable of movement on the site as well as for intra-site movement.
Among the self propelled mobile cranes, there are 360 degree slew rough terrain cranes, 360 degrees slew all terrain cranes, 360 degrees slew truck mounted mobile cranes, non-slew self propelled articulated cranes etc. 360 degree slew rough terrain cranes are capable of negotiating steeper slopes, have excellent rough terrain capability, medium speed upto 40 kmph and the boom can be rotated through full 360 degrees for positioning of loads. 360 degress slew all terrain cranes have limited rough terrain ability, high speed of the order of 80-90kmph, high maneuverability and multi-axles suitable for high way travel. 360 degree slew truck mounted mobile crane are mounted on truck chassis, have
limited terrain capability, high speed of the order of 80-90 kmph, boom can be rotated through 360 degrees and are suitable for high way travel.
Non-slew self propelled articulated cranes are provided with a diesel engine of 50-100 HP connected to a gear box through a single plate heavy duty friction type clutch. The output of the gearbox is given to a rear drive axle. The steering of vehicle is through articulation of front and rear bodies which is hydraulically controlled through two double acting cylinders. The front body is provided with a two-part box type boom for handling the load. The inner boom section is extended hydraulically for increasing reach and height. The boom end is provided with a snatch block, fitted with a hook for lifting/lowering load which is accomplished with a hydraulic motor. All load handling functions are generally hydraulic. The hydraulic system consists of an engine driven pump with control valve for operation of various functions.
A disadvantage of the above-mentioned non-slew self-propelled crane is that it has to be moved for placement of load.
Another disadvantage of the above mentioned crane is that it has a low speed.
Still another disadvantage of the above-mentioned crane is that its boom has limited reach and height.
Further disadvantage of the above crane is that it cannot be used for dragging etc. OBJECTS OF PRESENT INVENTION
An object of the present invention is to provide a non-slew self propelled articulated crane as a recovery crane capable of lifting and dragging wreckages of accidental vehicles including trucks and buses on highways, upto the weight of 10 tonnes and upto the size of 12m long.
Another object of this invention is to provide a crane, which is capable of plying on highways at a cruising speed upto 40 kmph.
Still another object of this invention is to provide a crane wherein the driver should be able to position himself in such a way that wreckage should be in front during clearing but should not be in front of the driver during towing and he should face the direction of movement during towing.
Further object of this invention is to provide a crane which has ergonomically located controls and property designed operator cabin with all around visibility-Yet further object of this invention is to provide a crane which is cost effective.
Still further object of this invention is to provide a crane which is provided with outriggers for adequate stability.
Yet further object of this invention is to provide a crane which has gradeability in 12.5% laden condition.
STATEMENT OF INVENTION
According to this invention there is provided a recovery crane comprising six-cylinder, preferably four chlinder water cooled engine provided with gear box having six forward speed gears and one reverse gear, a two speed auxiliary gear box to change speed from high to low and vice-versa and a propeller shaft providing power from gear box to auxiliary gear box a propeller shaft providing power to front axle and propeller shaft
providing power to rear axle. Front cabin housing driving controls like engine accelerator, clutch pedal, brake pedal, parking brake pedal, parking brake lever and dash board. Rear cabin housing controls for crane functions like boom lifting and extension, outriggers, hoisting winch and dragging winch telescopic boom capable of being raised to 64 degrees and provided with fixed-hook-16ton a hook dragging attached to dragging winch a snatch block assembly provided at the end of boom lift cylinder connecting boom to rear chassis chain carrying tray a tow bar assembly a hydraulic tank and fuel tank fitted to front chassis rear body connected to front body through articulation joints counter weight attached to the front of front body a disturbed stability mechanism fitted on front axle an overloading safety device fitted on to the lift cylinder and hoist winch.
DESCRIPTION OF FIGURES
This invention will now be illustrated with accompanying figure which illustrate an embodiment of present invention and is not intended to be taken restrictively to imply any limitation on the scope of the present invention. In the accompanying figure:
Fig. 1: shows the construction of the crane of present invention;

DETAILED DESCRIPTION OF INVENTION W.R.T. DRAWINGS
According to this invention, a recovery crane is provided which comprises a six cylinder, preferably four cylinder water cooled engine (1) of 110 HP fitted on front chassis which drives crane and also gives power to crane actuators like boom (7), winch hoist (9), winch dragging (10), outriggers (16), etc. The engine is connected to gear box (2) through a single plate 14 inches clutch. The gear box (2) has four forward speed gears and one reverse gear. Auxiliary gear box (3) is a two speed auxiliary gear box situated in front chassis to change speed from high to low and vice-versa. It also provides two/four wheel drive to the vehicle for different ground conditions. The propeller shaft (4) provides power from the gear box (2) to the auxiliary gear box (3). The propeller shaft (29) provides power from the auxiliary gear box (3) to the front axle (19) and propeller shaft (30) provides power form the auxiliary gear box (3) to the rear axle (20) for traveling function. The front cabin (5) is fitted on the right hand side of the front chassis and houses various controls used for driving the vehicle like the engine accelerator, clutch pedal, brake pedal, parking brake lever, dash board and instruments for driving. The rear cabin (6) is fitted on the left hand side of rear chassis and houses the controls for crane iunctions like boom lifting and extension, outriggers (16) and hoisting winch (9) and dragging winch (10). The boom (7) is a two part telescopic boom and can be raised to
an angle of 64 degrees. It is provided with a fixed hook-16 ton (21) for lifting 16ton load and a hook dragging (22) attached to the dragging winch (10) through a dragging wire for dragging the load. A snatch block assembly (8) is provided at the end of the said boom for hoisting the load up and down. The lift cylinder (11) connects the rear chassis to the boom (7) and gives angular movement to the boom assembly. The front tyres (12) are fitted on the front axle (19) and there are two tyres on each side. Rear tyres (13) are fitted on the rear axle (20) and there are two tyres on each side. Chain carrying tray (14) houses the tools and tackles for recovery application. A tow bar assembly (15) is fitted near the rear of the rear chassis and is used for towing the recovered vehicle. There are two outriggers (16) fitted on the rear chassis which consist of two telescope boxes which move up and down in the rear chassis through two hydraulic cylinders. These outriggers (16) provide stability to the crane while dragging and not transferring the load to the rear axle during dragging operation. A hydraulic tank (17) fitted to the front chassis, contains hydraulic oil for the hydraulic system on the crane. Fuel tank (18) also fitted on the front chassis, contains diesel for the operation of the engine on the crane. The rear body (23) of the crane of the present invention, is attached to the front body (24) through articulation joints (26) and supports boom assembly, lift cylinder, rear cabin, dragging winch, outriggers (16) and rear axle. The front body (24) is attached to the rear body (23)
through articulation joints (26) and supports front cabin, engine, radiator, hydraulic tank (17), fuel tank (18) counter weight (25), gear box, auxiliary gear box and front axle. Counter weight (25) which are the dead weights attached to the front of the front body, are provided to give stability to the crane during crane operation. A disturbed stability mechanism (27) fitted on the front axle, is a safety feature incorporated in the crane design, and gives warning to operator when ever front tyres and axles get lifted from the ground which may result in toppling of crane in case of over loading. An over loading safety device (28) is fitted on the lift cylinder (11) and hoist winch (9) which gives indication to the operator in the rear cabin, in case of overloading through lift cylinder or hoist winch.
It is to be noted that the present invention is susceptible to modifications, changes and adaptations by those skilled in the art. Such variant embodiments incorporating the concepts and features of the present invention, are intended to be within the scope of the present invention, which is further set forth under the following claims:-

WE CLAIM;
1. A recovery crane comprising-
(a) six-cylinder water cooled engine (1), provided with gear box (2) having four forward speed gears and one reverse gear, a two speed auxiliary gear box (3) to change speed from high to low and vice-versa and a propeller shaft (4) providing power from gear box (2) to auxiliary gear box (3), a propeller shaft (29) providing power to front axle (19) and a propeller shaft (30) providing power to rear axle (20);
(b) front cabin (5) housing driving controls like engine accelerator, clutch pedal, brake pedal, parking brake pedal, parking brake lever and dash board;
(c) rear cabin (6) housing controls for crane functions like boom lifting and extension, outriggers (16), hoisting winch (9) and dragging winch (10);
(d) telescopic boom (7) capable of being raised to 64 degrees and provided with fixed-hook-16 ton (21), a hook dragging (22) attached to dragging winch (10);
(e) a snatch block assembly (8) provided at the end of boom (7);
(f) lift cylinder (11) connecting boom (7) to rear chassis;
(g) chain carrying tray (14);
(h) a tow bar assembly (15);
(i) a hydraulic tank (17) and fuel tank (18) fitted to front chassis;
(j) rear body (23) connected to front body (24) through articulation joints
(26);
(k) counter weight (25) attached to the front of front body;
(1) a disturbed stability mechanism (27) fitted on front axle (19);
(m) an overloading safety device (28) fitted on to the lift cylinder (11) and hoist winch (9);
2. A recovery crane as claimed in claim 1, wherein engine has 110 HP.
3. A recovery crane as claimed in claim 1 wherein engine has preferably four
cylinder.
4. A crane as substantially described and illustrated herein.

Documents:

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Patent Number

272377

Indian Patent Application Number

954/DEL/2003

PG Journal Number

14/2016

Publication Date

01-Apr-2016

Grant Date

30-Mar-2016

Date of Filing

04-Aug-2003

Name of Patentee

ESCORTS LIMITED

Applicant Address

SCO-232, 1ST FLOOR, SECTOR - 20, PANCHKULA - 134109, HARYANA (INDIA)

Inventors:

#	Inventor's Name	Inventor's Address
1	RAVINDRA LUTHRA	ESCORTS CONSTRUCTION EQUIPMENT LIMITED, PLOT NO. 2, SECTOR-13, FARIDABAD-121 007.

PCT International Classification Number

B66C 13/06

PCT International Application Number

N/A

PCT International Filing date

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1			NA