CN110182007A - A kind of flexible drawing drag hook of electrically propelled traction vehicle - Google Patents

Abstract

A flexible traction hook for an electric tractor, comprising an axial elastic element installed between the tractor and the vehicle frame, both ends of the axial elastic element are hinged with spherical connectors, and the other end of the spherical connector A supporting plate is connected, and two hanging rings are fixed on the outer wall of the supporting plate; a supporting plate connected by a pin shaft and a hanging ring is provided between the tractor and the vehicle frame, and the two supporting plates are connected by a spherical joint There are two axial elastic elements connected. When the vehicle goes up and downhill, turns, or passes through bumpy roads such as speed bumps, there will be relative torsion or height difference and angle difference between the tractor and the frame, and the spherical connection will The component can change the angle of the axial elastic element in time, so that the force is always kept in the axial direction, so while ensuring good cushioning performance, the service life of the structure can be greatly increased.

Description

A flexible traction hook for an electric tractor

technical field

The invention relates to the technical field of special vehicles, in particular to a flexible traction hook of an electric tractor.

Background technique

Characteristics and market analysis of electric tractors Electric tractors have the advantages of high energy conversion efficiency, low noise, no exhaust emissions, and convenient control. It meets the needs of various logistics, transportation and distribution systems, and can significantly improve the efficiency of production operations. With the development of the logistics industry and the improvement of environmental protection requirements, the market demand for electric tractors is increasing. For countries that attach great importance to environmental protection, electric vehicles are very useful.

Currently used electric tractors, the connecting mechanism adopts a rigid connection to connect the traction head and the storage box, resulting in a large impact on the electric tractor. When the traction head starts or decelerates, the storage device behind it is easy to impact the traction head, while Such an impact can easily cause the electric tractor to overturn, the electric tractor hits the object in front and damage the items carried on the storage device. Therefore, the Chinese patent with the publication number CN206812727U discloses an electric tractor, and the connecting components adopt a flexible connection The traction head and the loading device are connected by means of a small impact, small vibration and high stability, but the solution adopts a single axial shock absorber, and both ends are fixed to the frame, and can only be used in the axial direction. Buffering, so that when going up and down slopes, bumps or turns during transportation, the twisting of the body will affect the buffer structure and may cause damage.

Contents of the invention

In order to overcome the problems in the prior art, the invention provides a flexible traction hook of an electric tractor.

The technical solution of the present invention is specifically as follows: a flexible traction hook for an electric tractor, comprising an axial elastic element installed between the tractor and the vehicle frame, spherical connectors are hinged at both ends of the axial elastic element, And the other end of the spherical connector is connected with a support plate, the outer wall of the support plate is fixed with two hanging rings, the tractor and the vehicle frame are fixed with a pin shaft matching the hanging rings, the There are two axial elastic elements, and they are all connected between the two support plates through the spherical joints.

Preferably, the spherical connector includes a limiting plate, a spherical connecting joint and a connecting plate, a hemispherical groove matching the spherical connecting joint is opened on the supporting plate, and the limiting plate is fixed on the supporting plate The outer wall of the spherical joint cooperates with the hemispherical groove to form a cavity for limiting the position of the spherical joint, and the connecting plate is fixed on the outer wall of the spherical joint.

Preferably, the axial elastic element includes an air spring and a spring, the spring is sheathed on the outer wall of the air spring, and two ends of the air spring are fixed with bolt hole plates matched with the connecting plate.

Preferably, at least two bolt installation parts are fixed around the outer wall of the spherical connection joint, and bolts for fixing on the support plate are installed on the bolt installation parts.

Preferably, the support plate is strip-shaped, and the hanging ring is located on the upper part of the side wall of the support plate.

Compared with prior art, the beneficial effect of the present invention:

In the present invention, a support plate connected by a pin shaft and a hanging ring is provided between the tractor and the vehicle frame, and two axial elastic elements are connected between the two support plates through a spherical joint. When turning or passing bumpy roads such as speed bumps, relative torsion or height difference or angle difference occurs between the tractor and the frame, and the angle of the axial elastic element can be changed in time through the spherical connection, so that the force is always Keep in the axial direction, that is, only shrink or elongate in the axial direction without deformation, so while ensuring good cushioning performance, the service life of the structure can be greatly increased.

Description of drawings

Fig. 1 is a schematic structural view of a flexible traction hook of an electric tractor according to an embodiment of the present invention;

Fig. 2 is the structural representation of tractor and vehicle frame described in the embodiment of the present invention in the inclined state;

Fig. 3 is a schematic diagram of the structure of the ball joint according to the embodiment of the present invention.

Among the above figures 1-3, 10, tractor; 20, vehicle frame; 1, axial elastic element; 11, air spring; 111, bolt hole plate; 12, spring; 2, support plate; 201, hemispherical groove; 21. Hanging ring; 3. Spherical connector; 31. Limiting plate; 311. Bolt installation part; 32. Spherical connecting joint; 33. Connecting plate.

Detailed ways:

The present invention will be further described below with reference to the accompanying drawings.

Example

As shown in Figure 1, it includes an axial elastic element 1 installed between the tractor 10 and the vehicle frame 20, the two ends of the axial elastic element 1 are hinged with a spherical connector 3, and the other end of the spherical connector 3 is connected with a The support plate 2, two hanging rings 21 are fixed on the outer wall of the supporting plate 2, the pin shafts cooperating with the hanging rings 21 are fixed on the tractor 10 and the vehicle frame 20, the number of the axial elastic elements 1 is two, and all pass through The spherical connector 3 is connected between the two supporting plates 2, and the tractor 10 is an electric tractor, and the outer walls of the two supporting plates 2 are fixed with two hanging rings 21 respectively hung on the pins on the tractor 10 and the vehicle frame 20. On the shaft, the gravity of the device itself sinks to prevent tripping. When the vehicle goes up and down slopes, turns, or passes through bumpy roads such as speed bumps, relative twisting or There are height differences and angle differences, and the angle between the axial elastic element 1 and the support plate 2 can be changed in time through the spherical joint 3, so that the force is always kept in the axial direction, that is, only the axial elastic element 1 is in the axial direction. It shrinks or stretches in the axial direction without deformation, so while ensuring good cushioning performance, it can greatly increase the service life of the structure.

As shown in Figure 2, the axial elastic element 1 includes an air spring 11 and a spring 12. The air spring 11 has a relatively large cushioning performance, and the spring 12 is sleeved on the outer wall of the air spring 11. Strength, when the vehicle starts and stops, it can play a good cushioning performance. The two ends of the air spring 11 are fixed with the bolt hole plate 111 that is matched with the connecting plate 33, and the bolt can penetrate the connecting plate 33 and the bolt hole plate 111, so that The axial elastic element 1 and the connecting plate 33 are fixed, the support plate 2 is strip-shaped, and the hanging ring 21 is located at the upper part of the side wall of the supporting plate 2. Since the hanging ring 21 is located at the upper part of the side wall of the supporting plate 2, when the vehicle is running, As long as the tractor 10 and the vehicle frame 20 do not jump synchronously, the hanging ring 21 will not disengage from the pivot pin, and after parking, the hanging ring 21 on the vehicle frame 20 can be manually slid upwards and disengaged to realize decoupling.

As shown in Figure 3, the spherical connector 3 includes a limiting plate 31, a spherical connecting joint 32 and a connecting plate 33, the support plate 2 is provided with a hemispherical groove 201 that matches the spherical connecting joint 32, and the limiting plate 31 is fixed on the support The outer wall of the plate 2 cooperates with the hemispherical groove 201 to form a cavity for limiting the spherical joint 32. The spherical joint 32 can slide on the inside of the hemispherical groove 201 and the limiting plate 31 to ensure a large enough degree of freedom. The plate 33 is fixed on the outer wall of the spherical joint 32, and the outer wall of the spherical joint 32 is fixed with at least two bolt installation parts 311 around, and the bolt installation parts 311 are installed with bolts for fixing on the support plate 2, and the connection is realized by the bolts. The plate 33 is fixed on the support plate 2 .

Claims (5)

1. the flexible drawing drag hook of a kind of electrically propelled traction vehicle, including the axial bullet being mounted between tractor (10) and vehicle frame (20) Property element (1), which is characterized in that the both ends of the axial elasticity element (1) are hinged with ball link (3), and the ball Shape connector (3) other end is connected with support plate (2), and the outer wall of the support plate (2) is fixed, and there are two link (21), described to lead Draw the pin shaft being fixed on vehicle (10) and the vehicle frame (20) with the link (21) cooperation, the axial elasticity element (1) Quantity is two, and is connected between two support plates (2) by the ball link (3).

2. a kind of flexible drawing drag hook of electrically propelled traction vehicle according to claim 1, which is characterized in that the spherical connection Part (3) includes limit plate (31), spherical connecting joint (32) and connecting plate (33), offered on the support plate (2) with it is described The semi-spherical grooves (201) of spherical connecting joint (32) cooperation, the limit plate (31) are fixed on the outer wall of the support plate (2), The cavity limited to the spherical connecting joint (32) is cooperatively formed with the semi-spherical grooves (201), the connecting plate (33) is solid It is scheduled on the outer wall of the spherical connecting joint (32).

3. a kind of flexible drawing drag hook of electrically propelled traction vehicle according to claim 2, which is characterized in that the axial elasticity Element (1) includes air spring (11) and spring (12), and the spring (12) is set in the outer wall of the air spring (11), institute The both ends for stating air spring (11) are fixed with the bolt orifice plate (111) cooperated with the connecting plate (33).

4. a kind of flexible drawing drag hook of electrically propelled traction vehicle according to claim 2, which is characterized in that the spherical connection Outer wall one week of joint (32) is fixed at least two bolt mounting portions (311), installs on the bolt mounting portion (311) useful In the bolt being fixed on the support plate (2).

5. a kind of flexible drawing drag hook of electrically propelled traction vehicle according to claim 1, which is characterized in that the support plate (2) in a strip shape, and the link (21) is located at the side wall upper part of the support plate (2).