CN215705506U

CN215705506U - Traction device for semitrailer

Info

Publication number: CN215705506U
Application number: CN202121344052.2U
Authority: CN
Inventors: 郑松军
Original assignee: Liaoning Jintianma Primate Car Manufacturing Co ltd
Current assignee: Liaoning Jintianma Primate Car Manufacturing Co ltd
Priority date: 2021-06-17
Filing date: 2021-06-17
Publication date: 2022-02-01
Anticipated expiration: 2031-06-17

Abstract

The utility model provides a traction device for a semitrailer, which belongs to the technical field of traction devices for automobiles and comprises: the device comprises a first mounting plate, a first mounting frame, a first moving frame, a second moving frame, a connecting rod, a first spring, a bearing beam, a second mounting frame, a rotating shaft, a second spring, a bearing frame, a roller and a third spring; the degree of freedom of multiple places is increased, the flexibility that semitrailer and tractor are connected is improved, when avoiding the road surface pothole, the semitrailer directly receives the impact with the tractor junction to certain activity space has when guaranteeing the semitrailer connection, thereby avoids the condition production that the junction wearing and tearing are serious or damage, avoids the semitrailer to disjoint, guarantees the stability when pulling. The first movable frame can move left and right within a small range, so that excessive bending stress on a joint is avoided when the tractor changes lanes, and fatigue damage of the joint is avoided; through making gapped between pivot and the bearing frame, avoid the junction to receive too big torsion, reduce the condition of breaking because of damaging.

Description

Traction device for semitrailer

Technical Field

The utility model belongs to the technical field of traction devices for vehicles, and particularly relates to a traction device for a semitrailer.

Background

At present, in the related art, the semitrailer mainly transports large-sized cargos which are large in size and not easy to disassemble, such as an excavator and the like. The axle of a semitrailer is placed behind the center of gravity of the vehicle and is a trailer equipped with a coupling device that transmits horizontal and vertical forces to a towing vehicle. The existing connection structures are mostly heavy transport vehicles which are connected to the towing vehicle by means of towing pins. However, the connection by the towing pin has poor stability, and the connection is usually subjected to large bending stress and torsional stress and is easy to damage, so that the connection needs to be frequently repaired. Therefore, the design of the traction device for the semitrailer enables the semitrailer to be stably connected with the tractor, avoids the semitrailer from being disconnected in the transportation process, and ensures the safety in transportation, which is particularly important.

SUMMERY OF THE UTILITY MODEL

The semi-trailer aims to solve the problems that the joint of the tractor and the semi-trailer in the prior art has no degree of freedom, is easy to damage in the long-term transportation process and the like; the utility model provides a traction device for a semitrailer, which improves the flexibility of connection between the semitrailer and a tractor by increasing multiple degrees of freedom, avoids the condition that the connection part is seriously abraded or damaged, avoids the disconnection of the semitrailer, and ensures the stability during traction. The specific technical scheme is as follows:

a hitch for a semitrailer for coupling the semitrailer to a tractor, said hitch comprising: the device comprises a first mounting plate, a first mounting frame, a first moving frame, a second moving frame, a connecting rod, a first spring, a bearing beam, a second mounting frame, a rotating shaft, a second spring, a bearing frame, a roller and a third spring; the first mounting plate is fixed on the tractor; the first mounting frame is connected with the first mounting plate; the first movable frame is embedded into the first mounting frame and is in sliding connection with the first mounting frame; the second movable frame is embedded into the first movable frame and is connected with the first movable frame in a sliding manner; the connecting rod is perpendicular to the second moving frame, and one end of the connecting rod is connected with the second moving frame; the first springs are perpendicular to the connecting rod, one ends of the two first springs are respectively connected with the top surface and the bottom surface of the second movable frame, and the other ends of the two first springs are simultaneously connected with the first movable frame; one end of the bearing beam is connected with the other end of the connecting rod in an inserting mode; the second mounting rack is sleeved on the outer side of the other end of the bearing beam, and a gap is formed between the second mounting rack and the bearing beam; the rotating shaft penetrates through the other end of the bearing beam, two ends of the rotating shaft are connected with the second mounting frame at the same time, and a gap is formed between the rotating shaft and the bearing beam; the two second springs are sleeved on the outer side of the rotating shaft at the same time, the two second springs are respectively positioned on two sides of the bearing beam, one ends of the two second springs are attached to the bearing beam at the same time, and the other ends of the two second springs are attached to the second mounting frame at the same time; the bearing frame is positioned below the bearing beam and connected with the bearing beam; the two roller carriers are simultaneously connected with the bearing frame; the two rollers are respectively in rotating connection with the two roller frames; the four third springs are respectively sleeved on the outer sides of the two roller carriers, one ends of the third springs are connected with the bearing frame, and the other ends of the third springs are connected with the roller carriers.

In addition, the traction device for the semitrailer in the technical scheme provided by the utility model can also have the following additional technical characteristics:

in the above technical solution, preferably, the traction apparatus for a semitrailer further includes: a limiting groove; the cross section of the limiting groove is T-shaped, the limiting groove is arranged on the top surface of the bearing beam, and the other end of the connecting rod is embedded into the limiting groove.

In the above technical solution, preferably, the connecting rod includes: the rod body and the limiting part; one end of the rod body is connected with the second movable frame; the limiting portion is perpendicular to the rod body, one end of the limiting portion is connected with the other end of the rod body, and the other end of the limiting portion is connected with the limiting groove in a clamped mode.

In the above technical solution, preferably, the traction apparatus for a semitrailer further includes: the accommodating groove, the stop block and the fourth spring are arranged; the two accommodating grooves are symmetrically arranged above the limiting part and are communicated with the limiting groove at the same time; at least part of the stop blocks are embedded into the accommodating grooves, and the two stop blocks are simultaneously attached to the top surfaces of the limiting parts; the two fourth springs are respectively embedded into the two accommodating grooves, one ends of the two springs are respectively connected with the two stop blocks, and the other ends of the two fourth springs are simultaneously connected with the bearing beam.

In the above technical solution, preferably, the traction apparatus for a semitrailer further includes: a guide plate; the two guide plates are respectively positioned at two sides of the first spring, and after the two guide plates penetrate through the second moving frame, two ends of the two guide plates are simultaneously connected with the inner wall of the first moving frame; wherein a gap exists between the guide plate and the second movable frame.

In the above technical solution, preferably, the traction apparatus for a semitrailer further includes: a spring seat; the four spring seats are simultaneously sleeved on the outer side of the roller carrier and are respectively connected with two ends of the two third springs.

Compared with the prior art, the traction device for the semitrailer has the beneficial effects that: this device is through increasing many degrees of freedom, improves the flexibility that semitrailer and tractor are connected, when avoiding the road surface pothole, semitrailer and tractor junction directly receive the impact to there is certain activity space when guaranteeing the semitrailer connection, thereby avoids the condition production that the junction wearing and tearing are serious or damage, with the stability of guaranteeing to connect, avoids the semitrailer to disjoint, stability when guaranteeing to pull. The first movable frame can move left and right in the first mounting frame within a small range, so that excessive bending stress on a joint is avoided when the tractor changes lanes, and fatigue damage of the joint is avoided; through making gapped between pivot and the bearing frame, avoid the junction to receive too big torsion to guarantee the joint strength of junction, reduce the condition because of damaging the disconnection. When the tractor passes through the hollow, the semitrailer still is located the land, and the tractor is highly inconsistent with the semitrailer, and the second removes the frame and can follow the deflector up-and-down motion, and two first springs are flexible, remove the frame to the second and carry on spacingly and support, ensure that connecting rod and carrier bar can not strike together immediately, and then avoid the second to remove frame and first removal frame hard contact to guarantee the stability that tractor and draw gear are connected. In a similar way, the second spring limits and supports the bearing beam, the stability of the bearing beam is guaranteed, the bearing beam is prevented from being in hard contact with the second mounting frame, and the second spring guarantees the stability of connection between the traction device and the semitrailer. Simultaneously, the third spring supports gyro wheel, bear frame and carrier bar to share the impact force that the carrier bar received, guarantee the stability of carrier bar in the transportation, so that whole draw gear has sufficient stability, thereby avoid tractor and semitrailer junction to produce the striking, thereby avoid the problem production that the semitrailer takes place to disjoint, with the stability that improves tractor and semitrailer and be connected, thereby make the security of semitrailer in the transportation. The connecting rod is connected with the bearing beam in an inserting mode, the limiting is achieved through the stop block and the fourth spring, the fast loading and unloading can be achieved, the connection is stable, the falling is not prone to occurring, and the using requirements are met. And adopt this kind to pull the structure, can need not to align tractor and semitrailer completely and can be connected tractor and semitrailer, and efficiency of connection has very big promotion.

Drawings

FIG. 1 is a schematic structural view of a towing attachment for a semitrailer in accordance with an embodiment of the present invention;

FIG. 2 is an enlarged view of the portion A of the towing attachment for a semitrailer of FIG. 1 in accordance with an embodiment of the present invention;

fig. 3 is a schematic structural view of a first movable frame of a towing device for a semitrailer according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a connecting rod of a towing attachment for a semitrailer in accordance with an embodiment of the present invention;

wherein, the correspondence between the reference numbers and the part names in fig. 1 to 4 is:

8. a tractor; 9. a semi-trailer; 10. a first mounting plate; 12. a first mounting bracket; 14. a first movable frame; 16. A second movable frame; 18. a connecting rod; 181. a rod body; 182. a limiting part; 20. a first spring; 22. a load beam; 24. a second mounting bracket; 26. a rotating shaft; 28. a second spring; 30. a carrier; 32. a roller frame; 34. a roller; 36. a third spring; 38. a limiting groove; 40. accommodating grooves; 42. a stopper; 44. a fourth spring; 46. a guide plate; 48. a spring seat.

Detailed Description

The utility model will be further described with reference to specific embodiments and figures 1 to 4, but the utility model is not limited to these embodiments.

Example 1

A towing attachment for a semitrailer 9 for coupling a semitrailer 9 to a towing vehicle 8, as shown in fig. 1-4, the towing attachment for a semitrailer 9 comprising: the first mounting plate 10, the first mounting frame 12, the first moving frame 14, the second moving frame 16, the connecting rod 18, the first spring 20, the load beam 22, the second mounting frame 24, the rotating shaft 26, the second spring 28, the carrier 30, the roller frame 32, the roller 34 and the third spring 36; the first mounting plate 10 is fixed to the tractor 8; the first mounting frame 12 is connected with the first mounting plate 10; the first movable frame 14 is embedded in the first mounting frame 12, and the first movable frame 14 is slidably connected with the first mounting frame 12; the second movable frame 16 is embedded in the first movable frame 14, and the second movable frame 16 is slidably connected with the first movable frame 14; the connecting rod 18 is perpendicular to the second moving frame 16, and one end of the connecting rod 18 is connected with the second moving frame 16; the first springs 20 are perpendicular to the connecting rod 18, one ends of the two first springs 20 are respectively connected with the top surface and the bottom surface of the second moving frame 16, and the other ends of the two first springs 20 are simultaneously connected with the first moving frame 14; one end of the bearing beam 22 is inserted with the other end of the connecting rod 18; the second mounting rack 24 is sleeved on the outer side of the other end of the carrier beam 22, and a gap exists between the second mounting rack 24 and the carrier beam 22; the rotating shaft 26 penetrates through the other end of the bearing beam 22, two ends of the rotating shaft 26 are connected with the second mounting frame 24 at the same time, and a gap exists between the rotating shaft 26 and the bearing beam 22; the two second springs 28 are simultaneously sleeved on the outer side of the rotating shaft 26, the two second springs 28 are respectively located on two sides of the bearing beam 22, one ends of the two second springs 28 are simultaneously attached to the bearing beam 22, and the other ends of the two second springs 28 are simultaneously attached to the second mounting frame 24; the bearing frame 30 is positioned below the bearing beam 22, and the bearing frame 30 is connected with the bearing beam 22; the two roller frames 32 are simultaneously connected with the bearing frame 30; the two rollers 34 are respectively connected with the two roller frames 32 in a rotating way; four third springs 36 are respectively sleeved on the outer sides of the two roller frames 32, one end of each third spring 36 is connected with the bearing frame 30, and the other end of each third spring 36 is connected with the roller frame 32.

In this embodiment, the towing means for the semitrailer 9 preferably further comprises: a limiting groove 38; the cross section of the limiting groove 38 is T-shaped, the limiting groove 38 is arranged on the top surface of the carrier beam 22, and the other end of the connecting rod 18 is embedded into the limiting groove 38, so that the connecting rod 18 is clamped with the carrier beam 22, the technical effect of rapidly dismounting the semitrailer 9 is achieved, and the traction continuity is guaranteed.

In this embodiment, preferably, the connecting rod 18 includes: a rod body 181 and a limiting part 182; one end of the rod body 181 is connected with the second moving frame 16, so that the rod body 181 and the second moving frame 16 synchronously move, the flexibility of the rod body 181 is improved, the bearing beam 22 can move up and down to avoid the road surface from being hollow, the joint of the semi-trailer 9 and the tractor 8 is collided, the joint is prevented from being damaged, the semi-trailer 9 is prevented from being disjointed, and the bearing capacity of the joint is improved; through making spacing portion 182 perpendicular to the body of rod 181, the one end of spacing portion 182 is connected with the other end of the body of rod 181, and the other end of spacing portion 182 and spacing groove 38 looks joint to be connected tractor 8 and semitrailer 9 fast, improve and dismantle speed, go on time with the assurance transportation.

In this embodiment, the towing means for the semitrailer 9 preferably further comprises: receiving groove 40, stopper 42 and fourth spring 44; the two accommodating grooves 40 are symmetrically arranged above the limiting part 182, and the two accommodating grooves 40 are simultaneously communicated with the limiting groove 38, so that the load-bearing beam 22 has an accommodating function; at least part of the stoppers 42 are embedded into the accommodating grooves 40, and the two stoppers 42 are simultaneously attached to the top surfaces of the limiting parts 182, so that the limiting parts 182 are limited, the limiting parts 182 are prevented from being separated from the limiting grooves 38, and the stability of connection between the semitrailer 9 and the tractor 8 is ensured; through making two fourth springs 44 imbed respectively in two holding tanks 40, the one end of two springs is connected with two dogs 42 respectively, and the other end of two fourth springs 44 is connected with carrier bar 22 simultaneously to the realization resets the technological effect with dog 42, and spacing carry out dog 42, avoids dog 42 to remove at will, guarantees the stability that connecting rod 18 and carrier bar 22 are connected, thereby ensures the stability that tractor 8 and semitrailer 9 are connected.

Specifically, when the limiting part 182 is embedded into the limiting groove 38, the semitrailer 9 is connected with the tractor 8, the fourth spring 44 is in a natural state, and the stopper 42 limits the limiting part 182, so that the limiting part 182 is stably connected with the limiting groove 38; when the semitrailer 9 is to be dismounted, the stoppers 42 are pushed to both sides, so that the stoppers 42 are respectively embedded into the two accommodating grooves 40, the fourth spring 44 is compressed, and at this time, the limiting portion 182 can be taken out of the limiting groove 38, and the semitrailer 9 is dismounted.

In this embodiment, the towing means for the semitrailer 9 preferably further comprises: a guide plate 46; by respectively positioning the two guide plates 46 at two sides of the first spring 20, after the two guide plates 46 pass through the second moving frame 16, two ends of the two guide plates 46 are simultaneously connected with the inner wall of the first moving frame 14, so that the second moving frame 16 is slidably connected with the first moving frame 14, and the second moving frame 16 moves along the first moving frame, the second moving frame 16 is prevented from rotating, the semi-trailer 9 is prevented from being too flexible and difficult to turn, and the smooth transportation work is ensured; through making there be the clearance between deflector 46 and the second removes frame 16 to reduce the friction between deflector 46 and the second removes frame 16, reduce wearing and tearing, and when guaranteeing semitrailer 9 vibrations, first spring 20 is flexible, fast to the position control of connecting rod 18 and carrier bar 22, thereby reaches the technological effect of carrying out quick adjustment to semitrailer 9 position, stability when guaranteeing semitrailer 9 transportation, noise abatement.

In this embodiment, the towing means for the semitrailer 9 preferably further comprises: a spring seat 48; through the simultaneous suit in the outside of gyro wheel frame 32 with four spring seats 48, and four spring seats 48 are connected with the both ends of two third springs 36 respectively, in order to carry on spacingly and fixed to fourth spring 44, promote the stability of fourth spring 44, in order to guarantee to carry out stable support to carrier beam 22, reach the purpose to carrier beam 22 absorbing shock, thereby share the effort that carrier beam 22 bore, guarantee the joint strength of connecting rod 18 between to carrier beam 22, guarantee the stability that semitrailer 9 is connected with tractor 8 promptly.

The embodiment is applied to a certain group of tractors 8 and semitrailers 9 in an experimental way, 10 tons of goods are transported between two cities in province, the total distance is about 380 kilometers, the road between the two cities is smooth, the transportation process is smooth, the traction device is inspected after the transportation, and the joint of the traction device is free of deformation and damage which are visible to naked eyes. The connection efficiency of the semitrailer 9 and the tractor 8 is shortened by about 5 minutes, and the connection efficiency is improved by about 35 percent.

Claims

1. A traction apparatus for a semitrailer for coupling the semitrailer to a tractor, comprising:

the first mounting plate is fixed on the tractor;

the first mounting frame is connected with the first mounting plate;

the first movable frame is embedded into the first mounting frame and is connected with the first mounting frame in a sliding manner;

the second moving frame is embedded into the first moving frame and is connected with the first moving frame in a sliding manner;

the connecting rod is perpendicular to the second moving frame, and one end of the connecting rod is connected with the second moving frame;

the first springs are perpendicular to the connecting rod, one ends of the two first springs are respectively connected with the top surface and the bottom surface of the second movable frame, and the other ends of the two first springs are simultaneously connected with the first movable frame;

one end of the bearing beam is spliced with the other end of the connecting rod;

the second mounting rack is sleeved on the outer side of the other end of the bearing beam, and a gap is formed between the second mounting rack and the bearing beam;

the rotating shaft penetrates through the other end of the bearing beam, two ends of the rotating shaft are connected with the second mounting frame at the same time, and a gap exists between the rotating shaft and the bearing beam;

the two second springs are sleeved on the outer side of the rotating shaft at the same time and are respectively positioned on two sides of the bearing beam, one ends of the two second springs are attached to the bearing beam at the same time, and the other ends of the two second springs are attached to the second mounting frame at the same time;

the bearing frame is positioned below the bearing beam and is connected with the bearing beam;

the two roller carriers are simultaneously connected with the bearing frame;

the two rollers are respectively and rotatably connected with the two roller frames;

and the four third springs are respectively sleeved on the outer sides of the two roller carriers, one end of each third spring is connected with the bearing frame, and the other end of each third spring is connected with the roller carrier.

2. The hitch device of claim 1, further comprising:

the cross section of the limiting groove is T-shaped, the limiting groove is formed in the top surface of the bearing beam, and the other end of the connecting rod is embedded into the limiting groove.

3. The hitch device of claim 2, wherein said hitch bar comprises:

one end of the rod body is connected with the second moving frame;

the limiting part is perpendicular to the rod body, one end of the limiting part is connected with the other end of the rod body, and the other end of the limiting part is connected with the limiting groove in a clamped mode.

4. The hitch device of claim 3, further comprising:

the two accommodating grooves are symmetrically arranged above the limiting part and are simultaneously communicated with the limiting groove;

the stop blocks are at least partially embedded into the accommodating grooves, and the two stop blocks are simultaneously attached to the top surfaces of the limiting parts;

and the two fourth springs are respectively embedded into the two accommodating grooves, one ends of the two springs are respectively connected with the two stop blocks, and the other ends of the two fourth springs are simultaneously connected with the bearing beam.

5. The hitch device of claim 1, further comprising:

the two guide plates are respectively positioned at two sides of the first spring, and after the two guide plates penetrate through the second moving frame, two ends of the two guide plates are simultaneously connected with the inner wall of the first moving frame;

wherein a gap exists between the guide plate and the second movable frame.

6. The towing attachment for a semi-trailer according to any one of claims 1 to 5, further comprising:

and the four spring seats are simultaneously sleeved on the outer side of the roller frame and are respectively connected with two ends of the two third springs.