CN216002094U

CN216002094U - Single-point rigid traction device

Info

Publication number: CN216002094U
Application number: CN202123200731.5U
Authority: CN
Inventors: 彭高亮; 刘世伟; 薛渊; 孙瑜; 程枫; 李崔盟
Original assignee: Harbin Institute of Technology
Current assignee: Harbin Institute of Technology
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-03-11
Anticipated expiration: 2031-12-17

Abstract

A single-point rigid traction device belongs to the technical field of wheel type equipment emergency repair vehicle accessories. The two traction arms are symmetrically arranged at the left side and the right side of the emergency repair vehicle respectively, a rotary telescopic part is arranged on each traction arm, the rope of the rope winding assembly controls the upper and lower rotation of the rotary telescopic part of the traction arm, the upward folding and downward unfolding of the traction arms are realized, and the rotary telescopic parts of the two traction arms are fixed by a pin shaft after being downwards rotated and extended, so that a triangular structure is formed to realize the traction function. The utility model has large rigidity and high stability, and is suitable for the situation of complicated road conditions with large load; meanwhile, the problem that a common rigid traction device is difficult to disassemble is solved; in addition, the utility model is realized by completely adopting a mechanical structure, an electric device is not needed, and the reliability of the device is greatly enhanced; has the advantages of ingenious design, easy processing, easy realization and low cost.

Description

Single-point rigid traction device

Technical Field

The utility model belongs to the technical field of wheeled equipment emergency repair vehicle accessories, concretely relates to single-point rigidity draw gear.

Background

With the demand of modern war and the development of technology, higher requirements are put on the performance of vehicle equipment, mainly in terms of high reliability and high maneuverability. For disabled or damaged vehicle vehicles, rescue vehicles are equipped with traction devices, usually rigid traction devices that require manual mounting by personnel.

There are generally two types of rigid traction methods currently in use. One is a simple-to-use single-rod traction device, which has the advantages of small volume, light weight, simple structure and easy learning of using method, but the traction device has low strength, poor stability and long installation time, does not meet the requirements of a rigid traction device used by a rescue vehicle, is easy to be instable when the traction vehicle goes down a slope, leads the traction vehicle to be mounted on the traction vehicle, and is very unsafe for heavy-load vehicles. Another is to use a two-bar pulling device which can be non-retractable or collapsible, which is also just rigid and quicker to install, but which requires a lot of space, not complying with the requirements of a multifunctional emergency vehicle, and which is also collapsible, although a collapsible rigid pulling device is very portable, but which has a limited rigidity and is very cumbersome to install, not complying with the rapidity requirements of an emergency vehicle. The above-mentioned several rigid traction devices are installed by manpower, so that they are relatively inefficient and dangerous. And the above-mentioned several rigid traction devices have no good way to unload traction force during disassembly, which can be very difficult.

SUMMERY OF THE UTILITY MODEL

The invention aims to solve the technical problem of the prior art, and provides a single-point rigid traction device for a rescue vehicle, which realizes a rigid traction function with less manual work, ensures high reliability of the rigid traction device during working, enables the rigid traction device to be mounted and dismounted more quickly, and really realizes high efficiency and reliability of the rigid traction device.

The utility model adopts the technical proposal that: a single-point rigid traction device comprises two traction arms and two rope winding assemblies respectively arranged on the two traction arms; the two traction arms are symmetrically arranged at the left side and the right side of the emergency repair vehicle respectively, a rotary telescopic part is arranged on each traction arm, the rope of the rope winding assembly controls the upper and lower rotation of the rotary telescopic part of the traction arm, the upward folding and downward unfolding of the traction arms are realized, and the rotary telescopic parts of the two traction arms are fixed by a pin shaft after being downwards rotated and extended, so that a triangular structure is formed to realize the traction function.

Compared with the prior art, the utility model following beneficial effect has:

the utility model has large rigidity and high stability, and is suitable for the situation of complicated road conditions with large load; meanwhile, the problem that a common rigid traction device is difficult to disassemble is solved; in addition, the utility model is realized by completely adopting a mechanical structure, an electric device is not needed, and the reliability of the device is greatly enhanced; has the advantages of ingenious design, easy processing, easy realization and low cost.

Drawings

FIG. 1 is a schematic view of the utility model when folded;

FIG. 2 is a schematic view of the present invention when deployed;

FIG. 3 is a schematic view of the structure of the rotary telescopic part of the drag arm of the present invention;

wherein: 1. a traction arm; 2. a rope winding assembly; 3. drawing the two-section arm; 4. a trailing base arm; 5. a knuckle bearing; 6. a rigid pulling seat; 7. a rope winding frame; 8. a handle; 9. a horizontal guide pulley; 10. a cord; 11. a vertical guide pulley; 12. a traction ring; 13. a fixing ring; 14. just pulled back to the support; 15. a lower lifting eye screw; 16. lifting a ring screw; 17. a spring quick release pin; 18. and a locking pin.

Detailed Description

Due to the limitation of space arrangement on the emergency repair vehicle, rigid traction arms are arranged on the left and right sides of the emergency repair vehicle respectively, the rigid traction arms are driven by steel wire ropes, the steel wire ropes are controlled in a hand-cranking mode, each rigid traction arm is provided with two stages, the second-stage traction arms extend out after the traction arms are put down and are locked by locking pins, the traction arms on the two sides are connected by connecting pins, and the traction ring at the tail end of each traction arm is used for traction.

The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 3, and the embodiment provides a single-point rigid traction device, which comprises two traction arms 1 and two rope winding assemblies 2 respectively mounted on the two traction arms 1; two trailing arms 1 are respectively the symmetry and install in the left and right sides of salvage car, all are equipped with rotatory pars contractilis on every trailing arm 1 to by the upper and lower rotation of the rotatory pars contractilis of rope 10 control trailing arm 1 of wiring subassembly 2, realize the upwards folding and the downward expansion of trailing arm 1, fixed by round pin axle one after the rotatory pars contractilis of two trailing arms 1 is rotatory stretched out downwards, form the triangular structure and realize traction function.

The wire rope 10 is made of a steel wire rope, and the traction arm 1 is made of a rigid material.

The second embodiment is as follows: the present embodiment is described with reference to fig. 1 to 3, and the present embodiment further defines a first specific embodiment, and in the present embodiment, each of the draft arms 1 includes a rigid draft seat 6 and a rotary expansion part composed of a draft base arm 4, a draft second arm 3, a lock pin 18, and a spring quick release pin 17; the traction basic arm 4 is rotatably arranged on the rigid traction base 6 in the vertical direction, the traction two-joint arm 3 is inserted into an inner cavity of the traction basic arm 4 to be in telescopic sliding connection with the traction basic arm 4, when the right traction two-joint arm 3 extends out, the traction two-joint arm 3 and the traction basic arm 4 are locked in a matched mode through a locking pin 18 and a spring quick-release pin 17, two ends of the rope 10 are connected with the traction basic arm 4, and the extending length of two ends of the rope 10 is controlled through rotation of the rope winding assembly 2, so that the traction basic arm 4 is controlled to rotate up and down. Other components and connection modes are the same as those of the first embodiment.

The third concrete implementation mode: the present embodiment is described with reference to fig. 1 to 3, and is further limited to the second embodiment, in the present embodiment, each rope winding assembly 2 includes a rope winding frame 7, a handle 8 and a rope 10, the rope winding frame 7 is mounted on the rigid traction base 6 corresponding to the traction arm 1 and is close to the joint bearing 5, the middle of the rope 10 is wound on a rotating shaft on the rope winding frame 7, and the handle 8 is connected with the rotating shaft to drive the rotating shaft to rotate and realize the winding and unwinding of the rope 10. The other components and the connection mode are the same as those of the second embodiment.

Fourth embodiment, referring to fig. 1 to 3, the third embodiment is further defined, in the third embodiment, an upper eye screw 16 is disposed on the upper end surface of each pulling basic arm 4 close to the rope winding frame 7, two lower eye screws 15 are disposed on the lower end surface of each pulling basic arm 4 far from the rope winding frame 7, the two lower eye screws 15 are disposed along the length direction of the pulling basic arm 4, one end of each rope 10 is connected with the upper eye screw 16, and the other end of each rope 10 passes through one lower eye screw 15 to be connected with the other lower eye screw 15.

The fifth concrete implementation mode: the present embodiment is described with reference to fig. 1 to 3, and is further limited to a fourth specific embodiment, in which a plurality of horizontal guide pulleys 9 and vertical guide pulleys 11 are mounted on both the traction base arm 4 and the rigid traction base 6 to guide and restrict the movement of the wire rope 10. The other components and the connection mode are the same as those of the fourth embodiment.

The sixth specific implementation mode: the present embodiment will be described with reference to fig. 1 to 3, and the present embodiment further defines a fifth embodiment, in which the draft base arm 4 is connected to the knuckle bearing 5, the knuckle bearing 5 is connected to the second pin of the rigid draft seat 6, and the axial directions of the knuckle bearing 5 and the second pin are both horizontal, thereby achieving vertical rotation of the draft base arm 4. The rotary connection of the traction basic arm 4 and the rigid traction base 6 is realized. The other components and the connection mode are the same as the fifth embodiment mode.

The seventh embodiment: the present embodiment is described with reference to fig. 1 to 3, and the present embodiment further defines a sixth specific embodiment, in the present embodiment, a pair of pin holes are formed in the head end of the pulling base arm 4 and the tail end of the pulling two-joint arm 3, one end of the locking pin 18 passes through the pair of pin holes to connect the pulling base arm 4 and the pulling two-joint arm 3 in series, and the spring quick-release pin 17 is inserted into the one end of the locking pin 18, so that the locking pin 18 is fixed to the pulling base arm 4 and the pulling two-joint arm 3. Other components and connection modes are the same as those of the sixth embodiment.

The specific implementation mode is eight: the present embodiment is described with reference to fig. 1 to 3, and the present embodiment further defines a seventh embodiment, and in the present embodiment, the just-retracted support 14 is mounted on both the just-retracted supports 6, and the just-retracted support 14 is used to support the folded pulling base arm 4. The other components and the connection mode are the same as those of the seventh embodiment.

The specific implementation method nine: the present embodiment is described with reference to fig. 1 to 3, and is further limited to an eighth embodiment, in the present embodiment, the head ends of the two traction two-link arms 3 are respectively provided with one fixing ring 13, the two fixing rings 13 are connected in series by a first pin, and one of the fixing rings 13 is provided with a traction ring 12. The other components and the connection mode are the same as those of the eighth embodiment.

When rigid traction installation is carried out, after a handle 8 of a rope winding frame 7 is rotated to release a steel wire rope, a rigid traction arm 1 is placed to a working position, the rest steel wire rope is wound tightly, a left traction arm and a right traction arm 3 respectively extend to a working length, the length of the traction arm 1 is fixed by a locking pin 18, then the two traction arms 1 are drawn together through rotation of a joint bearing 5 at the bottom of the traction arm 1, and the left traction arm and the right traction arm 1 are connected through a first pin shaft.

Working process

The operation of the apparatus of the present invention will be described in detail below.

As shown in fig. 1 and 2, when the rigid traction device is installed, the control wire rope 10 is connected with the traction basic arm 4 through the wire rope 10 to provide tension for the traction basic arm 4,

the method specifically comprises the following steps: two workers respectively stand at two sides of the emergency repair vehicle, shake the handle 8 of the rope winding assembly 2 by hands, when the handle 8 is rotated anticlockwise, the rope 10 is sent out at the front side, the rope 10 is withdrawn at the rear side, the withdrawn rope 10 is finally fixed on a lower lifting bolt 15 at the head end of the traction basic arm 4 through a horizontal guide pulley 9 and a lower lifting bolt 15, the pulling force of the rope 10 is recovered, so that the traction basic arm 4 rotates downwards to reach a balance position (the balance position refers to the position when the rope 10 is just stressed, because the rope 10 is loose before the traction basic arm 4 is lowered to a working position, the rope 10 is just straight at the balance position and can just provide the pulling force, so the balance position is called at this time), and then the traction basic arm 4 is lowered to the working position by means of gravity, and the workers lock the rope winding frame 7. The feed-side wire 10 is fixed to the upper eye screw 16 by means of the vertical guide pulley 11, the feed-side wire 10 providing a pulling force when the trailing arm 1 passes the equilibrium position, and finally the position is maintained by the pulling force of the feed-side wire 10 when the trailing arm 1 reaches the working position.

After the left traction arm 1 and the right traction arm 1 reach working positions, a worker pulls out the two traction two-section arms 3, the pulling-out range of the traction two-section arms 3 can be automatically limited through the structure in the two traction two-section arms, after the traction two-section arms 3 are pulled out to the maximum length, the worker inserts the locking pin 18 into the pin hole of the traction arm 1 to fix the mutual positions of the traction basic arm 4 and the traction two-section arms 3, and the locking pin 18 is fixed through the spring quick-release pin 17. Because of the existence of the knuckle bearing 5, the left and right draft arms 1 have certain degree of freedom in the horizontal direction, after the left and right draft arms 1 are stretched to the maximum length, the two arms are simultaneously pulled towards the middle, the two pin holes are aligned and inserted into the first pin shaft, and the first pin shaft is fixed by the quick-release spring pin 17, so that the connection of the two draft arms 1 is realized. Thereby completing the installation of the single-point traction device, and the rigid traction ring can complete the traction work.

When the single-point rigid traction device is detached, a worker firstly loosens the rope winding frame 7 to loosen the rope 10, the rigid traction arm 1 can move in a certain range, the load is put down, then the three spring quick-release pins 17 are detached, the first pin shaft and the two locking pins 18 are detached, the left traction two-section arm 3 and the right traction two-section arm 3 are retracted, then the handle 8 of the rope winding frame 7 is rotated in the direction, and the rope 10 is locked after the traction arm 1 is retracted. Thereby completing the disassembly and recovery work of the single-point rigid traction device.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. A single point rigid traction device is characterized in that: comprises two traction arms (1) and two rope winding assemblies (2) respectively arranged on the two traction arms (1); two trailing arms (1) are respectively the symmetry and install in the left and right sides of salvage car, all are equipped with rotatory pars contractilis on every trailing arm (1) to by the upper and lower rotation of the rotatory pars contractilis of cotton rope (10) control trailing arm (1) of wiring subassembly (2), realize the upwards folding and the downward expansion of trailing arm (1), the rotatory pars contractilis of two trailing arms (1) is fixed by round pin axle one after stretching out to the rotation down, forms the triangular structure and realizes the traction function.

2. A single point rigid pulling apparatus as defined in claim 1, wherein: each traction arm (1) comprises a rigid traction base (6) and a rotary telescopic part consisting of a traction basic arm (4), a traction two-section arm (3), a locking pin (18) and a spring quick-release pin (17); the traction basic arm (4) is rotatably arranged on the rigid traction seat (6) in the vertical direction, the traction two-section arm (3) is inserted into an inner cavity of the traction basic arm (4) to be in telescopic sliding connection with the traction basic arm (4), the traction two-section arm (3) and the traction basic arm (4) are locked in a matched mode through a locking pin (18) and a spring quick-release pin (17), two ends of the wire rope (10) are connected with the traction basic arm (4), and the length of the extending-out ends of the wire rope (10) is controlled through the rotation of the wire winding assembly (2) so as to control the vertical rotation of the traction basic arm (4).

3. A single point rigid pulling apparatus as defined in claim 2, wherein: each rope winding assembly (2) comprises a rope winding frame (7), a handle (8) and a rope (10), the rope winding frame (7) is installed on a rigid traction seat (6) corresponding to the traction arm (1), the middle of the rope (10) is wound on a rotating shaft on the rope winding frame (7), and the handle (8) is connected with the rotating shaft to drive the rotating shaft to rotate and realize the winding and unwinding of the rope (10).

4. A single point rigid pulling apparatus as defined in claim 3, wherein: an upper lifting bolt (16) is arranged on the upper end face, close to the rope winding frame (7), of each traction basic arm (4), two lower lifting bolts (15) are arranged on the lower end face, far away from the rope winding frame (7), of each traction basic arm (4), one end of each rope (10) is connected with the upper lifting bolt (16), and the other end of each rope (10) penetrates through one lower lifting bolt (15) to be connected with the other lower lifting bolt (15).

5. The single point rigid pulling apparatus of claim 4, wherein: a plurality of horizontal guide pulleys (9) and vertical guide pulleys (11) are arranged on the traction basic arm (4) and the rigid traction seat (6) and are used for guiding and limiting the movement of the wire rope (10).

6. A single point rigid pulling apparatus as defined in claim 5, wherein: the traction basic arm (4) is connected with the joint bearing (5), the joint bearing (5) is connected with the second pin shaft of the rigid traction base (6), and the axial directions of the joint bearing (5) and the second pin shaft are both horizontal, so that the traction basic arm (4) can rotate up and down.

7. A single point rigid pulling apparatus as defined in claim 6, wherein: a pair of pin holes are formed in the head end of the traction basic arm (4) and the tail end of the traction two-section arm (3), one end of the locking pin (18) penetrates through the pin holes to be connected with the traction basic arm (4) and the traction two-section arm (3) in series, and the spring quick-release pin (17) is inserted into one end of the locking pin (18) to enable the locking pin (18) to be fixed on the traction basic arm (4) and the traction two-section arm (3).

8. A single point rigid pulling apparatus as defined in claim 7, wherein: and rigid traction support seats (14) are respectively arranged on the two rigid traction seats (6), and the rigid traction support seats (14) are used for supporting the folded traction basic arm (4).

9. A single point rigid pulling apparatus as defined in claim 8, wherein: the head ends of the two traction two-section arms (3) are respectively provided with a fixing ring (13), the two fixing rings (13) are connected in series through a pin shaft I, and one of the fixing rings (13) is provided with a traction ring (12).