CN218966606U - Height-adjustable semi-trailer spherical traction pin and assembly - Google Patents

Abstract

The utility model discloses a height-adjustable spherical traction pin and a height-adjustable spherical traction pin assembly for a semi-trailer, and relates to the technical field of semi-trailers, wherein the spherical traction pin comprises a screw rod, a traction pin ball, a semi-trailer connecting piece and a spring sliding block, one end of the screw rod is fixed with the semi-trailer connecting piece, and the other end of the screw rod is in threaded connection with the traction pin ball; the spring triangular sliding blocks are symmetrically arranged on two sides of the spring sliding block, and grooves matched with the spring triangular sliding blocks are formed in the inner walls of the traction pin balls so as to enable the traction pin balls to be fixed or separated from the traction pin balls by pressing the spring triangular sliding blocks. According to the utility model, the height adjustment of the traction pin ball is realized by rotating the screw rod, the locking of the traction pin ball is realized by pressing the spring triangular slide block and pushing down the spring slide block, the operation is convenient, and the installation precision is high.

Description

Height-adjustable semi-trailer spherical traction pin and assembly

Technical Field

The utility model relates to the technical field of semitrailers, in particular to a height-adjustable spherical traction pin of a semitrailer and an assembly

Background

The semitrailer traction pin is an important ring of semitrailer connection, the type of the traction pin of the semitrailer needs to be determined firstly when the semitrailer is pulled at present, and then the tractor matched with the type of the semitrailer needs to be dispatched.

There are some traction pin adjusting devices in the prior art, for example CN204210256U discloses an adjustable semi-trailer traction device, comprising a traction pin seat, wherein the lower end of the traction pin seat is provided with a traction pin, the traction pin seat is connected with a frame through a bolt and a fixing plate, the traction pin seat is provided with holes with different heights, and the holes are connected with holes on the frame through positioning pins. When the scheme is used, the locating pins are firstly pulled out, the bolts are sequentially rotated, the traction pin seat is lifted, and when the traction pin seat is lifted to a required position, the holes on the traction pin seat are aligned with the holes on the frame, and then the locating pins are penetrated to fix and locate the traction pin seat; although the traction pin can be adjusted up and down, a plurality of bolts are required to be operated for each adjustment, the operation is troublesome, and the installation error is easy to occur.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide the spherical traction pin and the assembly of the semitrailer with adjustable height, which realize the height adjustment of the traction pin ball by rotating a screw rod, realize the locking of the traction pin ball by pressing a spring triangular slide block and pushing down the spring slide block, and have convenient operation and high installation precision.

In order to achieve the above object, the present utility model is realized by the following technical scheme:

in a first aspect, an embodiment of the present utility model provides a height-adjustable spherical traction pin of a semitrailer, including a screw, a traction pin ball, a semitrailer connecting piece, and a spring slider, where one end of the screw is fixed to the semitrailer connecting piece, and the other end of the screw is in threaded connection with the traction pin ball; the spring triangular sliding block is embedded in the spring sliding block, and a groove matched with the spring triangular sliding block is formed in the inner wall of the traction pin ball, so that the traction pin ball is fixed or separated from the traction pin ball by pressing the spring triangular sliding block.

As a further implementation, the spring slider is provided with a spring on the side facing the kingpin ball.

As a further implementation manner, the traction pin ball is provided with a threaded hole matched with the screw rod.

As a further implementation mode, openings for installing the spring triangular slide blocks are formed in two sides of the spring slide blocks.

As a further implementation manner, the spring triangle slider comprises a pressing shell and a spring arranged in the pressing shell.

As a further implementation, the screw is perpendicular to the semitrailer connection.

As a further implementation, the semitrailer connection is disc-shaped.

In a second aspect, embodiments of the present utility model also provide a height adjustable semi-trailer spherical kingpin assembly comprising the spherical kingpin and a retrieval tool for operating a spring triangle slider.

As a further implementation manner, the extracting tool comprises a V-shaped clamping main body, and two ends of the clamping main body are provided with protruding parts oppositely.

As a further implementation manner, the clamping main body is of an integral structure or a split structure.

The beneficial effects of the utility model are as follows:

(1) According to the utility model, the spring sliding blocks and the spring triangular sliding blocks on two sides of the spring sliding blocks form the fixing mechanism, so that the position locking of the traction pin ball can be realized after the screw rod is rotated to a set position, the operation is convenient, and the installation accuracy is high.

(2) According to the utility model, the matched extraction tool is arranged, the extraction tool is plugged into the groove of the traction pin ball, and the spring triangular sliding block is extruded, so that the spring triangular sliding block is retracted into the opening of the spring sliding block, the fixing device can be ejected out, and the traction pin ball position can be readjusted conveniently.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a perspective view of the present utility model according to one or more embodiments;

FIG. 2 is a side view of the present utility model according to one or more embodiments;

FIG. 3 is a perspective view of a removal tool according to one or more embodiments of the present utility model;

FIG. 4 (a) is a schematic diagram of a spring slider structure according to one or more embodiments of the present utility model;

FIG. 4 (b) is a cross-sectional view of a spring slider according to one or more embodiments of the present utility model;

FIG. 5 is a schematic diagram of a spring triangle slider structure in accordance with one or more embodiments of the present utility model.

Wherein, 1, a semitrailer connecting piece, 2, a screw rod, 3, a spring sliding block, 4, a spring triangle sliding block, 5 and a traction pin ball, 6, clamping main body, 7, protruding part, 8, spring, 9, opening, 10, pressing shell, 11, spring.

Detailed Description

Embodiment one:

the embodiment provides a height-adjustable spherical traction pin of a semi-trailer, which comprises a semi-trailer connecting piece 1, a screw rod 2, a traction pin ball 5 and a spring sliding block 3, wherein one end of the screw rod 2 is fixed with the semi-trailer connecting piece 1, and the installation of the traction pin is realized through the semi-trailer connecting piece 1; the other end of the screw rod 2 is in threaded connection with a traction pin ball 5, the traction pin ball 5 is used for connecting a saddle and a traction pin, and the height of the traction pin of the semitrailer is controlled by adjusting the position of the traction pin ball 5 on the screw rod 2.

The screw 2 is perpendicular to the semitrailer connection 1, in this embodiment the semitrailer connection 1 is disc-shaped, facilitating connection with the semitrailer. It will be appreciated that in other embodiments, the semitrailer hitch 1 may also be of other shapes, such as rectangular.

The traction pin ball 5 is internally provided with a threaded hole, and is matched with the external thread of the screw rod 2 through the threaded hole. A guide hole is formed in one side of the threaded hole, is communicated with the threaded hole and can enable the spring sliding block 3 to be inserted.

As shown in fig. 4 (a) and 4 (b), a spring 8 is arranged on the side of the spring slider 3 facing the traction pin ball 5, and the spring 8 can press the spring slider 3 in the groove of the screw rod 2. The cross section shape of the spring sliding block 3 can be set arbitrarily, in this embodiment, the cross section of the spring sliding block 3 is rectangular, and the shape of the guide hole is adapted to the cross section of the spring sliding block 3.

Openings 9 are symmetrically formed in two sides of the spring sliding block 3, a spring triangular sliding block 4 is installed in each opening 9, the spring triangular sliding block 4 can be contracted in the opening by pressing the spring triangular sliding block 4, and the spring triangular sliding block 4 is restored to an initial state after the pressing is canceled, namely, the spring triangular sliding block 4 is located outside the opening.

As shown in fig. 5, the spring triangle slider 4 comprises a pressing shell 10 and a spring 11 arranged in the pressing shell 10, wherein the spring 11 is connected with the inner wall of the spring slider 3; the pressing housing 10 has a triangular longitudinal section. In the present embodiment, the pressing housing 10 has a right triangle shape, one of which corresponds to the opening 9, and in the initial state, one of the sharp points having an acute angle is located outside the opening; the inclined surface of the pressing housing 10 is located at the lower side with reference to the direction shown in fig. 2.

The inner wall of the traction pin ball 5 is provided with a groove matched with the spring triangular sliding block 4, the spring triangular sliding block 4 is pressed and the spring sliding block 3 is pushed down to enable the spring sliding block 3 to partially enter the guide groove, after the set position is reached, the pressing action is canceled, the spring triangular sliding block 4 pops up to be matched with the groove, and the screw rod 2 and the traction pin ball 5 are locked.

The working principle of the embodiment is as follows:

firstly, the semitrailer connecting piece 1 is matched with the traction pin ball 5 through the screw rod 2, then a fixing device formed by the two spring triangular sliding blocks 4 and the spring sliding blocks 3 is plugged into the guide hole, the inner walls of the two spring triangular sliding blocks 4 and the traction pin ball 5 are extruded and pressed to slide downwards, and when the semitrailer connecting piece slides downwards to a fixed position, the spring triangular sliding blocks 4 are clamped into grooves in the traction pin ball 5, so that the semitrailer connecting piece is fixed. At this time, the spring of the spring slider 3 has been compressed.

When the fixing device is taken out, the taking-out tool is plugged into the groove, the spring triangular sliding block 4 is retracted into the opening of the spring sliding block 3 by pressing the spring triangular sliding block 4, and the spring at the bottom of the spring sliding block 3 is released to realize the ejection of the fixing device. And then the traction pin is rotated clockwise or anticlockwise for a few circles, then the traction pin is adjusted to a proper position, and then the device is plugged in to complete new fixation.

Embodiment two:

the embodiment provides a height-adjustable semi-trailer spherical traction pin assembly, which comprises the spherical traction pin in the embodiment one and a taking-out tool for operating a spring triangular sliding block 4.

As shown in fig. 3, the extracting tool comprises a clamping main body 6 and a protruding part 7, wherein the clamping main body 6 is in a V-shaped structure, and the protruding parts 7 are oppositely arranged at two ends of the clamping main body 6; the pressing of the spring cam slider 4 is achieved by pressing the clamping body 6 so that the two projections 7 come close to each other.

In the present embodiment, the grip body 6 may be an integral structure made of a thin metal, formed in a form similar to forceps; the boss 7 has a cylindrical structure. It will be appreciated that in other embodiments, the clamping body 6 may be a split structure, the clamping body 6 is hinged by two clamping plates to form a V-shaped structure, and a spring is connected between the clamping plates to meet the pressing and restoring requirements.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (10)

1. The height-adjustable spherical traction pin of the semi-trailer is characterized by comprising a screw rod, a traction pin ball, a semi-trailer connecting piece and a spring sliding block, wherein one end of the screw rod is fixed with the semi-trailer connecting piece, and the other end of the screw rod is in threaded connection with the traction pin ball; the spring triangular sliding blocks are symmetrically arranged on two sides of the spring sliding block, and grooves matched with the spring triangular sliding blocks are formed in the inner walls of the traction pin balls so as to enable the traction pin balls to be fixed or separated from the traction pin balls by pressing the spring triangular sliding blocks.

2. The height-adjustable semi-trailer hitch pin of claim 1, wherein the spring slider is provided with a spring on the side facing the hitch pin ball.

3. The height-adjustable semi-trailer hitch pin of claim 2, wherein the hitch pin ball is provided with a threaded bore which mates with a threaded rod.

4. The height-adjustable spherical traction pin for a semitrailer according to claim 1, wherein openings for installing the triangular spring sliders are formed in two sides of the spring sliders.

5. The height adjustable semi-trailer hitch pin of claim 1, wherein the spring triangle slide comprises a press housing and a spring disposed within the press housing.

6. A height adjustable semi-trailer hitch pin as claimed in claim 1, wherein the screw is perpendicular to the semi-trailer hitch.

7. The adjustable height semi-trailer hitch pin of claim 6, wherein the semi-trailer hitch member is disc-shaped.

8. A height adjustable semi-trailer hitch pin assembly comprising a spherical hitch pin as claimed in any one of claims 1 to 7, and further comprising a take out tool for operating the spring triangle slide.

9. The adjustable height semi-trailer hitch pin assembly of claim 8, wherein the extraction tool comprises a V-shaped clamp body having opposite ends with bosses.

10. The adjustable height semi-trailer hitch pin assembly of claim 9, wherein the clamp body is of one or a split construction.

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