CN113942947A

CN113942947A - Vehicle-mounted lifting device

Info

Publication number: CN113942947A
Application number: CN202111194319.9A
Authority: CN
Inventors: 张连武; 孙江生; 赵晔; 黄文斌; 王正军; 梁伟杰; 吕艳梅; 蔡娜; 毛向东; 许文志; 李万领
Original assignee: 32181 Troops of PLA
Current assignee: 32181 Troops of PLA
Priority date: 2021-10-13
Filing date: 2021-10-13
Publication date: 2022-01-18
Anticipated expiration: 2041-10-13
Also published as: CN113942947B

Abstract

The invention provides a vehicle-mounted hoisting device, which is used for being installed on a disassembly and assembly repair vehicle and belongs to the technical field of maintenance and guarantee, a hoisting mechanism and a supporting unit are arranged on the disassembly and assembly repair vehicle, the supporting unit is used for supporting the disassembly and assembly repair vehicle during hoisting, the supporting unit comprises a cross arm, a first driving piece, a second driving piece and a supporting block, when the vehicle-mounted hoisting device is used, the cross arm is unfolded outwards from the disassembly and assembly repair vehicle and drives the first driving piece to move downwards through the second driving piece, when the vehicle-mounted hoisting device moves to a certain position, the first driving piece is opened, so that the driving end of the first driving piece drives the supporting block to be supported on the ground, when a steep section is encountered, the supporting height from the cross arm to the ground can be increased through driving the first driving piece to move downwards through the second driving piece, so that the supporting block can be stably supported on the ground, and the operation of manually cushioning the flat ground is reduced, manpower and material resources are saved, and the hoisting efficiency can be effectively improved.

Description

Vehicle-mounted lifting device

Technical Field

The invention belongs to the technical field of maintenance and guarantee, and particularly relates to a vehicle-mounted lifting device.

Background

With the continuous development of the transportation industry, the operation requirements of various large parts are gradually increased, vehicles or technical support equipment provided with a vehicle-mounted hoisting device are continuously developed, due to the fact that the field is limited in the maintenance and repair processes of some vehicles, a dismounting and repairing vehicle with the hoisting device is generally required to operate, the hoisting device on the dismounting and repairing vehicle needs to adopt a supporting leg to support the dismounting and repairing vehicle during operation, the dismounting and repairing vehicle can keep the vehicle body stable when lifting objects, the supporting leg generally adopts a hydraulic cylinder to drive the supporting block to be supported on the ground at present, when the hydraulic cylinder is used, the stroke of the hydraulic cylinder is limited, so that when the hydraulic cylinder is used in steep sections, the supporting block is still not contacted with the ground when the supporting leg is positioned in the low-lying section, and some cushion blocks are required to be manually carried to be placed on the low-lying section, and the supporting block is abutted to the cushion block, the disassembly and assembly repairing vehicle is complex to operate in the using process, manpower and material resources are wasted, and the production efficiency in the hoisting process is reduced.

Disclosure of Invention

The invention aims to provide a vehicle-mounted lifting device, and aims to solve the technical problem that in the prior art, when a dismounting and repairing vehicle works on an uneven road surface, the operation is complex, the manpower is wasted, and the lifting efficiency is influenced.

In order to achieve the purpose, the invention adopts the technical scheme that: provided is a truck-mounted lifting device, comprising:

the hoisting mechanism is arranged on the disassembly and assembly repairing vehicle and used for hoisting articles;

the support unit sets up on the dismouting repair car, be used for hoisting machine constructs when hoisting article the automobile body of dismouting repair car, the support unit includes:

the cross arm is arranged on the body of the disassembly and assembly repairing vehicle along the horizontal direction and is arranged on the body of the disassembly and assembly repairing vehicle in a sliding way along the width direction of the disassembly and assembly repairing vehicle;

the first driving piece is arranged at the end part, far away from the dismounting and repairing vehicle, of the cross arm in a sliding mode along the vertical direction, and the driving end of the first driving piece is located below the first driving piece;

the driving end of the second driving piece is fixedly connected with the fixed end of the first driving piece and is used for driving the first driving piece to slide on the cross arm;

and the supporting block is fixedly connected with the driving end of the first driving piece and is used for supporting on the ground.

As another embodiment of the present application, a sleeve is disposed between the first driving member and the cross arm, the first driving member is fixedly disposed inside the sleeve, and an outer side of the sleeve is slidably connected to the cross arm.

As another embodiment of the present application, the second driving element is fixedly disposed at the outer side of the cross arm, a connecting plate is disposed between the driving end of the second driving element and the sleeve, and the driving end of the second driving element is fixedly connected to the sleeve through the connecting plate.

As another embodiment of the present application, an end of the sleeve away from the connecting plate is provided with an opening for avoiding the first driving member.

As another embodiment of this application, the xarm with be provided with fixed pipe between the automobile body of dismouting repair car, fixed pipe is fixed to be set up on the automobile body of dismouting repair car, the xarm slides and sets up fixed intraductal, the xarm with be provided with the third driving piece between the fixed pipe, the stiff end of third driving piece is fixed intraduct, the drive end of third driving piece with xarm fixed connection.

In another embodiment of the present invention, a limiting mechanism is further provided between the cross arm and the fixed pipe for preventing the cross arm from slipping out of the fixed pipe when the cross arm is accommodated in the fixed pipe.

As another embodiment of the present application, the limiting mechanism includes:

the roller is arranged on the side surface of the cross arm in a rolling manner along the length direction of the cross arm;

the connecting arm is hinged to the fixed pipe, and the roller is rotatably arranged at one end of the connecting arm;

the elastic piece is arranged between the connecting arm and the fixed pipe and used for driving the connecting arm to rotate so as to enable the roller to be attached to the cross arm;

and the clamping groove is formed in the side surface of the cross arm, which is far away from one end of the fixed pipe, and is positioned on the same side of the fixed pipe with the roller, and the roller can be clamped into the clamping groove and is used for fixing the cross arm in the fixed pipe.

As another embodiment of the present application, the limiting mechanism further includes:

the mounting block is fixedly arranged on the fixed pipe and is positioned on one side, away from the roller, of the connecting arm;

the clamping pin is arranged in the mounting block in a sliding mode, and the end part of the clamping pin can slide into the bottom of one end, away from the roller, of the connecting arm to prevent the connecting arm from rotating;

and the ejection piece is arranged between the bayonet lock and the mounting block and used for driving the bayonet lock to move towards the direction close to the connecting arm.

As another embodiment of the application, one end, far away from the roller, of the connecting arm is provided with a bolt hole, and when the roller is separated from the clamping groove, the bolt can slide into the bolt hole to prevent the connecting arm from rotating on the fixing pipe.

As another embodiment of this application, said hoisting mechanism comprises:

the fixed seat is rotatably arranged on the disassembly and assembly repairing vehicle;

one end of the hoisting arm is hinged to the fixed seat, the other end of the hoisting arm is provided with a lifting hook for hoisting an article, and the hoisting arm has a degree of freedom for rotating along a pitching angle on the fixed seat;

the winch is rotatably arranged on the fixed seat and is provided with a lifting rope connected with the lifting hook;

the fourth driving part is arranged between the fixed seat and the hoisting arm, and the fixed end and the driving end of the first driving part are respectively hinged to the fixed seat and the hoisting arm; the lifting arm is used for driving the lifting arm to rotate on the fixed seat.

The vehicle-mounted lifting device provided by the invention has the beneficial effects that: compared with the prior art, the lifting mechanism is arranged on the body of the disassembly and assembly repair vehicle and is used for lifting articles, the support unit is arranged on the disassembly and assembly repair vehicle and supports the disassembly and assembly repair vehicle through the support unit, so that the body of the lifting mechanism can be kept stable all the time in the lifting process, the first driving piece and the second driving piece are arranged on the cross arm in a sliding mode along the vertical direction, the fixed end of the first driving piece is connected with the driving end of the second driving piece, the second driving piece is fixedly arranged on the side face of the cross arm, when the disassembly and assembly repair vehicle works on uneven road surfaces, when the first driving piece extends to the limit stroke, if the support block cannot be supported on the ground, the second driving piece is started to drive the first driving piece to move downwards, so that the stroke of the support block can be increased, and the support block is stably supported on the ground, can reduce the manual work and carry out the operation of foreshadowing to the unsettled position of supporting shoe, operation process is simple, and convenient to use uses manpower and materials sparingly, improves hoist and mount efficiency.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a truck-mounted lifting device provided in an embodiment of the present invention;

FIG. 2 is a side view of a support unit provided by an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion A of FIG. 1;

fig. 4 is a top view of fig. 1.

In the figure: 1. a hoisting mechanism; 11. a fixed seat; 12. hoisting the arm; 13. a winch; 14. a fourth drive; 2. a support unit; 21. a cross arm; 211. clamping grooves; 22. a first driving member; 23. a second driving member; 24. a support block; 25. a sleeve; 3. a fixed tube; 31. a third driving member; 4. a limiting mechanism; 41. a roller; 42. a connecting arm; 421. a pin hole; 43. an elastic member; 44. mounting blocks; 45. a bayonet lock; 46. a pop-up member; 5. and (5) disassembling and assembling the repair vehicle.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Referring to fig. 1, 2 and 4 together, the truck-mounted lifting device provided by the present invention will now be described. The vehicle-mounted hoisting device comprises a hoisting mechanism 1, a supporting unit 2, a cross arm 21, a first driving piece 22, a second driving piece 23 and a supporting block 24. The hoisting mechanism 1 is arranged on the disassembly and assembly repairing vehicle 5 and is used for hoisting articles; the support unit 2 is arranged on the disassembly and assembly repair vehicle 5 and used for supporting the disassembly and assembly repair vehicle 5 when the hoisting mechanism 1 hoists articles, and the support unit 2 comprises: the cross arm 21 is arranged on the body of the disassembly and assembly repairing vehicle 5 along the horizontal direction and is arranged on the body of the disassembly and assembly repairing vehicle 5 in a sliding way along the width direction of the disassembly and assembly repairing vehicle 5; the first driving piece 22 is arranged at the end part of the cross arm 21 far away from the dismounting and repairing vehicle 5 in a sliding mode along the vertical direction, and the driving end of the first driving piece 22 is located below the first driving piece 22; the second driving piece 23 is arranged on the cross arm 21 along the vertical direction, and the driving end of the second driving piece 23 is fixedly connected with the fixed end of the first driving piece 22 and is used for driving the first driving piece 22 to slide on the cross arm 21; a support block 24 is fixedly connected to the drive end of the first drive member 22 for support on the ground.

Compared with the prior art, the vehicle-mounted lifting device provided by the embodiment has the advantages that the lifting mechanism 1 is arranged on the vehicle body of the disassembly and assembly repair vehicle 5, the lifting mechanism 1 is used for lifting objects, the support unit 2 is arranged on the disassembly and assembly repair vehicle 5, and the disassembly and assembly repair vehicle 5 is supported by the support unit 2, so that the vehicle body of the lifting mechanism 1 can be kept stable all the time in the lifting process, the first driving piece 22 and the second driving piece 23 are arranged on the cross arm 21, the first driving piece 22 is arranged on the cross arm 21 in a sliding manner along the vertical direction, the fixed end of the first driving piece 22 is connected with the driving end of the second driving piece 23, the second driving piece 23 is fixedly arranged on the side surface of the cross arm 21, when the disassembly and assembly repair vehicle 5 works on uneven road surfaces, when the first driving piece 22 extends to the limit stroke, if the support block 24 cannot be supported on the ground, the second driving piece 23 can be started to drive the first driving piece 22 to move downwards so as to increase the stroke of the support block 24, make 24 stable supports of supporting shoe subaerial, can reduce the manual work and carry out the operation of foreshadowing to 24 unsettled positions of supporting shoe, operation process is simple, and convenient to use uses manpower and materials sparingly, improves hoist and mount efficiency.

In this embodiment, the first driving member 22 and the second driving member 23 are hydraulic cylinders.

In this embodiment, the driving end of the first driving member 22 is provided with a spherical or hemispherical structure, a spherical groove is provided in the supporting block 24, the spherical groove and the driving end of the first driving member 22 form a universal rotation structure for the supporting block 24 to rotate relative to the driving end of the first driving member 22, and the supporting block 24 has two symmetrically arranged cushion blocks which are fixed by bolt connection, so that the driving end of the first driving member 22 is conveniently connected with the supporting block 24.

Referring to fig. 1 and 2 together, a sleeve 25 is disposed between the first driving member 22 and the cross arm 21, the first driving member 22 is fixedly disposed inside the sleeve 25, and an outer side of the sleeve 25 is slidably connected to the cross arm 21. The end part of the fixed end of the first driving part 22 is provided with an installation flange, and the sleeve 25 is fixedly welded on the installation flange, so that when the second driving part 23 drives the first driving part 22 to move along the vertical direction, the sleeve 25 can be driven to slide in the cross arm 21, the friction between the first driving part 22 and the cross arm 21 can be avoided, the damage of the first driving part 22 is prevented, and the safety of the first driving part 22 in the using process is improved.

In this embodiment, the first driving member 22 is completely located inside the sleeve 25, so as to prevent the first driving member 22 from being damaged by the external objects during transportation and construction.

Referring to fig. 1 and 2 together, the second driving member 23 is fixedly disposed at an outer side of the cross arm 21, a connection plate is disposed between a driving end of the second driving member 23 and the sleeve 25, and the driving end of the second driving member 23 is fixedly connected to the sleeve 25 through the connection plate. Be provided with the installation lug in the side of xarm 21, the articulated setting of stiff end of second driving piece 23 is between the installation lug of two parallel interval settings, be provided with two interval parallel arrangement's mounting panel on the connecting plate, the drive end of second driving piece 23 is located between two mounting panels, and fix the drive end of second driving piece 23 between two mounting panels through the bolt, the bolt sets up with second driving piece 23 articulated shaft on two installation lugs is perpendicular, it can't rotate on xarm 21 to make second driving piece 23 through bolt and articulated shaft restriction each other, thereby make the drive end of second driving piece 23 tightly can follow vertical direction and slide, make things convenient for the installation and the dismantlement of second driving piece 23 simultaneously can improve the stability of second driving piece 23 in the use promptly.

In this embodiment, the connecting plate adopts angle steel processing preparation, and the mounting panel welding is connected with two vertically gusset of angle steel in the inside of angle steel, can improve the intensity of connecting plate, prevents that the connecting plate from producing the deformation in the use.

Referring to fig. 1 and 2 together, as an embodiment of the truck-mounted lifting device provided by the present invention, an end of the sleeve 25 away from the connecting plate is provided with an opening for avoiding the first driving member 22. The opening is located at the top of the socket 25 and communicates with the interior of the socket 25, through which the first driving member 22 can be taken out of the socket 25 and through which the first driving member 22 can be placed inside the socket 25.

In this embodiment, when installing first driving piece 22, through placing first driving piece 22 inside sleeve 25, and make the tip laminating of first driving piece 22 on the mounting flange of sleeve 25 tip, be provided with the mounting hole that is used for installing first driving piece 22 stiff end on mounting flange, be provided with the screw hole with the coaxial setting of mounting hole on the stiff end of first driving piece 22, can be with first driving piece 22 fixed mounting on mounting flange through the screw, it installs and takes out from sleeve 25 to be convenient for first driving piece 22, make things convenient for later stage to the maintenance and the maintenance of first driving piece 22.

Referring to fig. 3, 1 and 4 together, as a specific embodiment of the truck-mounted hoisting device provided by the present invention, a fixed pipe 3 is provided between a cross arm 21 and a truck body of the repair and disassembly truck 5, the fixed pipe 3 is fixedly provided on the truck body of the repair and disassembly truck 5, the cross arm 21 is slidably provided inside the fixed pipe 3, a third driving member 31 is provided between the cross arm 21 and the fixed pipe 3, a fixed end of the third driving member 31 is fixed inside the fixed pipe 3, and a driving end of the third driving member 31 is fixedly connected to the cross arm 21. Fixed pipe 3 is fixed to be set up on dismouting repair car 5 along the width direction of dismouting repair car 5 automobile body, and the opening of fixed pipe 3 symmetry respectively sets up the both sides at the automobile body, xarm 21 slides along fixed pipe 3 length direction in fixed pipe 3 through the drive of third driving piece 31, the fixed inside that sets up at fixed pipe 3 of fixed pipe 31, the drive end is connected with xarm 21 tip fixed in fixed pipe 3, can control xarm 21 and extend to dismouting repair car 5 both sides through the state of controlling third driving piece 31 when using, make supporting shoe 24 can support the both sides at dismouting repair car 5, play firm effect.

In this embodiment, a single crossbar 21 is provided individually inside the independent fixed pipes 3, and the extension of the crossbar 21 can be increased, and a plurality of fixed pipes 3 are arranged in line in the longitudinal direction of the repair and disassembly vehicle 5.

Referring to fig. 1 and 3 together, a limiting mechanism 4 for preventing the cross arm 21 from slipping out of the fixed pipe 3 when the cross arm 21 is accommodated in the fixed pipe 3 is further provided between the cross arm 21 and the fixed pipe 3. After hoisting mechanism 1 hoists the completion, need accomodate xarm 21 and get into inside fixed pipe 3, in order to prevent that dismouting repair car 5 from leading to taking place danger from the inside roll-off of fixed pipe 3 at the in-process xarm 21 of walking, through being provided with stop gear 4, can accomodate to fixed pipe 3 when inside at xarm 21, stop gear 4 can be automatic with xarm 21 locking inside fixed pipe 3, prevent effectively that xarm 21 from the inside roll-off of fixed pipe 3, improve the security of dismouting repair car 5 at the in-process of walking.

Referring to fig. 2, 1 and 3 together, the limiting mechanism 4 includes a roller 41, a connecting arm 42, an elastic member 43 and a clamping groove 211. The roller 41 is arranged on the side surface of the cross arm 21 in a rolling way along the length direction of the cross arm 21; the connecting arm 42 is hinged on the fixed tube 3, and the roller 41 is rotatably arranged at one end of the connecting arm 42; the elastic piece 43 is arranged between the connecting arm 42 and the fixed pipe 3 and is used for driving the connecting arm 42 to rotate so as to enable the roller 41 to be attached to the cross arm 21; a clamping groove 211 is arranged on the side surface of the cross arm 21 far away from one end of the fixed tube 3 and on the same side of the fixed tube 3 as the roller 41, and the roller 41 can be clamped into the clamping groove 211 for fixing the cross arm 21 in the fixed tube 3. The clamping groove 211 is concavely arranged on the side surface of the cross arm 21, a bracket is arranged on the outer side of the fixed pipe 3 close to the outer side end part of the vehicle body of the dismounting repair vehicle 5, the connecting arm 42 is rotatably arranged on the bracket, the connecting arm 42 and the rotating shaft of the bracket are perpendicular to the sliding direction of the cross arm 21 in the fixed pipe 3, one end of the connecting arm 42 extends out of the end part of the fixed pipe 3 and is provided with a roller 41, one end of an elastic piece 43 is abutted against the side surface of the fixed pipe 3, the other end of the elastic piece is abutted against one side of the connecting arm 42 far away from one end of the roller 41 and close to the fixed pipe 3, the elastic piece 43 and the roller 41 are respectively positioned on two sides of the rotating shaft of the connecting arm 42, the roller 41 can be always attached to the side surface of the cross arm 21 by driving the connecting arm 42 to rotate, the roller is driven to rotate by the sliding of the cross arm 21 in the fixed pipe 3, the clamping groove 211 is positioned on the cross arm 21, and when the cross arm 21 slides towards the inside of the fixed pipe 3 to enable the roller 41 to roll to the position of the clamping groove 211, the roller 41 is driven by the elastic piece 43 to enter into the roller 41 The side surface of the roller 41 or the connecting arm 42 is abutted against the inner wall of the clamping groove 211 by being inserted into the clamping groove 211, so that the cross arm 21 cannot slide in the fixed pipe 3.

In this embodiment, a control switch is disposed between the connecting arm 42 and the outer side of the fixed tube 3, the control switch is installed at the outer side of the fixed tube 3, and when the roller 41 slides into the clamping groove 211, the connecting arm 42 rotates and abuts against the control switch, the control switch is electrically connected to a controller for controlling the on-off state of the third driving element 31, and when the roller 41 enters into the clamping groove 211, the connecting arm 42 abuts against the control switch, so as to directly stop the operating state of the third driving element 31.

In this embodiment, the connecting arm 42 and the roller 41 are respectively located above the fixed pipe 3 and the cross arm 21, an oil storage tank and an oil delivery pipe are arranged on the connecting arm 42, a brush is arranged at the end of the oil delivery pipe, the brush is attached to the roller 41, one end of the oil delivery pipe is communicated with the brush, the other end of the oil delivery pipe is communicated with the oil storage tank, lubricating oil is added into the oil storage tank and is delivered to the brush through the oil delivery pipe, the roller 41 rotates relative to the brush, the lubricating oil is brushed on the surface of the roller 41 through the brush, the lubricating oil is delivered to the upper side face of the cross arm 21 through the roller 41, the lubricating oil flows to the two sides of the cross arm 21 by gravity, and flows to the inner wall of the fixed pipe 3 through the cross arm 21 in a sliding mode inside the fixed pipe 3, and in the use process of the cross arm 21, an automatic lubricating effect is achieved on the inner walls of the cross arm 21 and the fixed pipe 3.

Referring to fig. 1 and 3 together, the limiting mechanism 4 further includes a mounting block 44, a latch 45 and an elastic ejecting member 46. The mounting block 44 is fixedly arranged on the fixed pipe 3 and is positioned on one side of the connecting arm 42 away from the roller 41; the bayonet 45 is arranged in the mounting block 44 in a sliding manner, and the end part of the bayonet 45 can slide into the bottom of one end of the connecting arm 42 away from the roller 41 to prevent the connecting arm 42 from rotating towards the side higher than the fixed pipe 3; an ejection member 46 is provided between the detent 45 and the mounting block 44 for urging the detent 45 towards the connecting arm 42. The mounting block 44 is located at one side of the connecting arm 42, when the roller 41 slides into the clamping groove 211, the connecting arm 42 rotates, a gap between one end of the connecting arm 42 far away from the roller 41 and the fixed tube 3 becomes larger, the clamping pin 45 slides into the gap between the end of the connecting arm 42 and the outer side of the fixed tube 3, so that one end of the connecting arm 42 far away from the roller 41 cannot rotate towards the direction close to the fixed tube 3, and the roller 41 can be kept in the clamping groove 211.

In this embodiment, the end of the latch 45 and the end of the connecting arm 42 are rounded, so that the latch 45 can slide into the gap between the connecting arm 42 and the fixed tube 3.

In this embodiment, the ejection member 46 is a spring, which is inexpensive and easy to purchase.

Referring to fig. 3, when the end of the connecting arm 42 away from the roller 41 is provided with a pin hole 421, the pin can slide into the pin hole 421 to prevent the connecting arm 42 from rotating on the fixed pipe 3 when the roller 41 is separated from the clamping groove 211. When the roller 41 slides out of the clamping groove 211 and is separated from the outer side of the cross arm 21, the bayonet 45 can slide into the bayonet hole 421, and the third driving piece 31 can be opened to move the cross arm 21 out of the fixed pipe 3 when the hoisting mechanism 1 hoists an object, so that the operation is convenient.

In this embodiment, when the roller 41 rolls on the side of the cross arm 21, the end of the detent 45 abuts against the end of the connecting arm 42, and when in use, the roller 41 can be disengaged from the hole of the detent 45 by pressing the connecting arm 42, and the detent 45 automatically slides into the latch hole 421.

Referring to fig. 1 and 4 together, as a specific embodiment of the vehicle-mounted lifting device provided by the present invention, the lifting mechanism 1 includes a fixed seat 11, a lifting arm 12, a winch 13, and a fourth driving member 14. The fixed seat 11 is rotatably arranged on the disassembly and assembly repairing vehicle 5; one end of the hoisting arm 12 is hinged on the fixed seat 11, the other end of the hoisting arm is provided with a lifting hook for hoisting articles, and the hoisting arm 12 has a degree of freedom for rotating along a pitching angle on the fixed seat 11; the winch 13 is rotatably arranged on the fixed seat 11, and a lifting rope connected with the lifting hook is arranged on the winch 13; the fourth driving part 14 is arranged between the fixed seat 11 and the hoisting arm 12, and the fixed end and the driving end of the first driving part 22 are respectively hinged on the fixed seat 11 and the hoisting arm 12; for driving the lifting arm 12 to rotate on the fixed seat 11. The fixed seat 11 is rotatably arranged on the vehicle body of the dismounting and repairing vehicle 5 through a rotating mechanism, and the rotating mechanism comprises a driving gear, a transmission gear and an internal gear. Drive gear rotates and sets up on dismouting repair car 5, it rotates to drive gear through being provided with driving motor on dismouting repair car 5, be provided with a plurality of drive gear in drive gear's the outside, a plurality of drive gear rotate and set up on dismouting repair car 5 and with drive gear intermeshing, the internal gear sets up in a plurality of drive gear's the outside and with a plurality of drive gear intermeshing with the tooth of fixing base 11 fixed connection and internal gear tooth encloses, thereby can drive gear through driving motor and rotate fixing base 11 and rotate on dismouting repair car 5, realize hoist and mount arm 12 360 continuous gyrations on dismouting repair car 5.

In this embodiment, the four driving members 14 are oil cylinders, the number of the four driving members is two, the two fourth driving members 14 are both provided with a balance valve, so that the lifting arm 12 can stably rise and fall, and the two fourth driving members 14 are connected through a pipeline to realize pressure communication, so that the two fourth driving members 14 synchronously move.

In this embodiment, be provided with the inner groovy on fixing base 11, the inner groovy is located fixing base 11 and is close to hoist and mount arm 12 one side, and hoist engine 13 is fixed to be set up inside the recess, and the last wire rope of hoist engine 13 passes through hoist and mount arm 12 conveying to lifting hook department to drive the lifting hook up-and-down motion. The arrangement space of the whole fixed seat 11 can be saved by arranging the winch 13 in the groove to prevent the collision of the foreign matters with the winch 13 on the one hand and the whole fixed seat on the other hand.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An on-board lifting device for mounting on a disassembly and assembly repair vehicle, comprising:

2. The truck mounted hoist of claim 1, wherein a socket is disposed between the first drive member and the crossbar, the first drive member is fixedly disposed within the socket, and an outer side of the socket is slidably coupled to the crossbar.

3. The truck-mounted lifting device of claim 2, wherein the second driving member is fixedly arranged at the outer side of the cross arm, a connecting plate is arranged between the driving end of the second driving member and the sleeve, and the driving end of the second driving member is fixedly connected with the sleeve through the connecting plate.

4. A truck mounted lifting device according to claim 3, wherein the end of the sleeve remote from the web is provided with an opening for clearance of the first drive member.

5. The truck-mounted hoisting device of claim 1, wherein a fixed pipe is arranged between the cross arm and the truck body of the overhaul truck, the fixed pipe is fixedly arranged on the truck body of the overhaul truck, the cross arm is slidably arranged in the fixed pipe, a third driving member is arranged between the cross arm and the fixed pipe, the fixed end of the third driving member is fixed in the fixed pipe, and the driving end of the third driving member is fixedly connected with the cross arm.

6. The truck mounted crane assembly as recited in claim 5, further comprising a stop mechanism disposed between said cross arm and said fixed tube for preventing said cross arm from sliding out of said fixed tube when said cross arm is received within said fixed tube.

7. An onboard lifting device as recited in claim 6, wherein the limiting mechanism comprises:

8. An on-board lifting device as recited in claim 7, wherein said limiting mechanism further comprises:

the clamping pin is arranged in the mounting block in a sliding mode, and the end part of the clamping pin can slide into the bottom of one end, away from the roller, of the connecting arm to prevent the connecting arm from rotating towards one side close to the fixed pipe;

9. The truck mounted hoist of claim 8, wherein the connecting arm is provided with a latch hole at an end thereof remote from the roller, and when the roller is disengaged from the catch groove, the latch is slidable into the latch hole to prevent the connecting arm from rotating on the fixed tube.

10. The truck mounted lifting device of claim 1, wherein said hoisting mechanism comprises: