CN209921239U - Semitrailer with adjustable bumper - Google Patents

Abstract

The application provides a semitrailer with adjustable bumper, including semitrailer main part, stand, first bolt and bumper. The bumper is arranged at the lower end of the upright post, and the upright post is hinged to the rear end beam of the semitrailer main body through a first hinged shaft at the upper end of the upright post, so that the upright post can swing up and down. The stand column is provided with a first jack and a second jack, the rear end beam is provided with a first pin hole, and the stand column is overturned around the first hinge shaft, so that the first pin hole is opposite to the first jack or the second jack. Insert first bolt in first pinhole and the first jack through upset stand, can lock the stand in the first position, insert first pinhole and second jack in, can lock the stand in the second position. When the upright post is positioned at the first position, the bumper reaches a lower position, and the requirement of driving the semitrailer to run on the road on the bumper can be met. When the stand is in the second position, the bumper reaches higher position, can satisfy the requirement to the height of bumper when semitrailer loads on the train and carries out railway transportation.

Description

Semitrailer with adjustable bumper

Technical Field

The utility model relates to a special-purpose vehicle technical field, in particular to semitrailer with adjustable bumper.

Background

The 'road-rail combined transportation' is a transportation mode that the semitrailer carries a train to carry out railway long-distance transportation and is combined with the semitrailer to run on a road, and the semitrailer can reduce the transportation cost of fuel oil, road charge, manpower and the like in the long-distance transportation of the semitrailer by utilizing the railway to carry out the long-distance transportation, so that the economic benefit is improved. At present, the road-rail transport is rapidly developed in a plurality of countries and regions in the world, and semitrailers meeting the road-rail transport requirements are more and more popular in the market.

The traditional semitrailer bumper is a fixed bumper, and the ground clearance is lower than the requirement of carrying trains for railway transportation. If a semitrailer capable of flexibly adjusting the height of a bumper can be designed, the semitrailer can meet the height requirement of normal highway driving on the bumper and the height requirement of railway transportation on the bumper by adjusting the height of the bumper is welcomed by the market.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides a semitrailer with adjustable bumper, including semitrailer main part, stand, locking mechanical system and bumper.

The upper end of the upright post is hinged on the rear end beam of the semitrailer body through a first hinged shaft.

The bumper is arranged at the lower end of the upright post.

Locking mechanical system locates on the rear end roof beam, be used for the stand wind when first articulated shaft rotates to the primary importance, will the stand lock in the primary importance, the stand wind when first articulated shaft rotates to the second place, will the stand lock in the second place.

The height of the lower end of the upright post in the first position is higher than the height of the lower end of the upright post in the second position.

Preferably, the locking mechanism is a first bolt, and the upright post is provided with a first jack and a second jack.

The rear end beam is provided with a first pin hole, and the upright post is turned around the first hinge shaft, so that the first pin hole can be opposite to the first jack or the second jack; when the first pin hole is opposite to the first jack, the upright post is positioned at a first position; when the first pin hole is over against the second jack, the upright post is at a second position.

The first bolt is inserted into the first pin hole and the first inserting hole, so that the upright post can be locked at the first position. The first bolt is inserted into the first pin hole and the second inserting hole, so that the upright post can be locked at the second position.

Preferably, the bumper comprises a bumper body, an overturning hinged support and a second bolt, the bumper body is fixed on the overturning hinged support, the overturning hinged support is hinged to the lower end of the upright column through a second hinge shaft, and a third jack and a fourth jack are formed in the upright column.

A second pin hole is formed in the turnover hinged support, and the turnover hinged support is turned around the second hinge shaft, so that the second pin hole can be opposite to the third jack or the fourth jack; when the second pin hole is opposite to the third jack, the bumper body is located at a third position; when the second pin hole is opposite to the fourth jack, the bumper body is located at a fourth position; the fourth position is reached by turning the upright from the third position to the lower front.

When the upright is located at the first position and the bumper body is located at the third position, the rear side surface of the bumper body faces to the right back; the stand is located the second position and when the bumper main part was in the fourth position, the trailing flank of bumper main part was towards the dead-back.

And the second bolt is inserted into the second pin hole and the third insertion hole, can lock the bumper body at the third position, and is inserted into the second pin hole and the fourth insertion hole, and can lock the bumper body at the fourth position.

Preferably, the upright column comprises two side plates and a connecting plate, the connecting plate is fixedly connected between the two side plates, and the third jack and the fourth jack are communicated with the two side plates.

Preferably, the second hinge shaft is provided at lower ends of the two side plates.

Preferably, a limiting block is fixedly arranged on the stand column, a limiting groove corresponding to the limiting block is formed in the turnover hinged support, the turnover hinged support winds the second hinged shaft to rotate to enable the limiting block to move relatively in the limiting groove, one end of the limiting groove, which is touched by the limiting block, is used for stopping the bumper body at the third position, and the other end of the limiting groove, which is touched by the limiting block, is used for stopping the bumper body at the fourth position.

Preferably, the upright column comprises two side plates and a connecting plate, the connecting plate is fixedly connected between the two side plates, and the first jack and the second jack are communicated with the two side plates.

Preferably, the upper ends of the two side plates are correspondingly provided with shaft holes, and the first hinge shaft penetrates through the shaft holes.

Preferably, the stand column further comprises a seat plate and a hinged shaft limiting plate, the seat plate is fixedly arranged between the two side plates, and the hinged shaft limiting plate is detachably fixed on the seat plate.

And an annular groove is formed in the circumferential surface of the first hinged shaft, and one side of the hinged shaft limiting plate is bent towards the annular groove and clamped into the annular groove.

Preferably, there are two upright columns, a connecting rod is fixedly arranged between the two upright columns, and the two upright columns are fixedly connected into a whole through the connecting rod.

Preferably, the first pin hole is a trepan hole of a pin bushing fixedly provided on the rear end beam.

According to the technical scheme, the method has at least the following advantages and positive effects:

the application provides a semitrailer with adjustable bumper, including semitrailer main part, stand, bumper and locking mechanical system. The bumper is arranged at the lower end of the upright post, and the upright post is hinged on a rear end beam of the semitrailer main body through a first hinged shaft at the upper end of the upright post, so that the upright post can swing up and down. When the lower end of the upright post swings to the lower position, the bumper reaches the lower position, and when the lower end of the upright post swings to the upper position, the bumper reaches the higher position.

Locking mechanical system locates on the rear end roof beam, and when the stand rotated to the primary importance around first articulated shaft, accessible locking mechanical system locked the stand in the primary importance to fix the bumper in lower position, go to the requirement to the bumper height with satisfying the driving semitrailer on the highway.

After the locking of the locking mechanism on the stand column is released, the stand column is rotated around the first hinge shaft to reach the second position, the stand column can be locked on the second position through the locking mechanism, the height of the lower end of the stand column is higher than that of the lower end of the stand column when the stand column is at the first position, and therefore the bumper is fixed at the higher position, and the requirement for the height of the bumper when the semitrailer is loaded on a train for railway transportation is further met.

Through the structure setting, the purpose of flexibly adjusting the height of the semitrailer bumper can be achieved, and the requirement of market on the transportation of the semitrailer highway and railway is met.

Drawings

Fig. 1 is a partial perspective view of a semitrailer with an adjustable bumper according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of the whole structure of the pillar in one embodiment.

Fig. 3 and 8 are partially enlarged structural views of fig. 1.

FIG. 4 is a schematic perspective view of a portion of a column in one embodiment.

Fig. 5 is a partial perspective view of the present application in a road driving state in one embodiment.

Fig. 6 and 7 are schematic partial perspective views of the railway transportation state of the application in corresponding embodiments.

The reference numerals are explained below: 1. a semitrailer body; 11. a rear end beam; 111. a pin bush; 2. a column; 21. a first hinge shaft; 211. an annular groove; 22. a side plate; 221. a first jack; 222. a second jack; 223. a third jack; 224. a fourth jack; 23. a connecting plate; (ii) a 24. A seat plate; 25. a hinged shaft limiting plate; 26. a second hinge shaft; 27. a limiting block; 3. a first latch; 4. a bumper; 41. a bumper body; 42. turning over the hinged support; 421. a limiting groove; 43. a second bolt; 5. a connecting rod.

Detailed Description

Exemplary embodiments that embody features and advantages of the present application will be described in detail in the following description. It is to be understood that the present application is capable of various modifications in various embodiments without departing from the scope of the application, and that the description and drawings are to be taken as illustrative and not restrictive in character.

In the embodiments of the present application, the following are defined: the direction of the normal transportation running movement of the semitrailer is front, the direction opposite to the front is back, the direction vertically close to the ground is downward, and the direction opposite to the downward is upward.

Referring to fig. 1 to 3, the embodiment of the present application provides a semitrailer with an adjustable bumper, which includes a semitrailer body 1, a column 2, a locking mechanism and a bumper 4.

The upper end of the upright 2 is hinged to the rear end beam 11 of the semitrailer body 1 by means of a first hinge shaft 21.

The bumper 4 is provided at the lower end of the pillar 2, and the lock mechanism is provided on the rear end beam 11. When the column is rotated to the first position about the first hinge shaft 21, the column 2 can be locked at the first position by the locking mechanism. When the upright 2 is in the first position, the upright 2 is in a vertical state.

When the upright 2 is rotated to the second position about the first hinge shaft 21, the upright 2 can be locked at the second position by the locking mechanism. The locking mechanism can be a bolt, two pin holes corresponding to the first position and the second position are formed in the rear end beam 11, two jacks corresponding to the first position and the second position are formed in the upright post 2, the bolt is inserted into the corresponding pin holes and jacks to lock the upright post 2 at the first position and the second position, and the bumper 4 can be adjustably fixed at different heights. The locking mechanism may also be a two-jaw mechanism arranged on the rear end beam 11, and when the upright 2 is in the first position, one of the two jaws catches on the upright 2, so that the upright 2 is clamped and fixed in the first position. When the upright post 2 is at the second position, the upright post 2 is clamped by the other clamping jaw, so that the upright post 2 is tightly clamped and fixed at the second position. The effect of locking the column 2 in different rotational positions can also be achieved.

The upright 2 is rotatable about the first hinge axis 21 from a first position to a second position, in which the height of its lower end of the upright 2 is higher than in the second position. When the upright post 2 is at the second position, the upright post 2 forms an included angle with the vertical direction. In a particular embodiment, the second position is reached by rotating upright 2 from the first position back and up about first hinge axis 21, so that the position of bumper 4 when the upright is in the second position is located back and up from the position of bumper 4 when the upright is in the first position. When the upright post 2 is at the first position, the height of the bumper 4 can meet the height requirement of the semitrailer on road running for the bumper 4. When the upright post 2 is positioned at the second position, the height of the bumper 4 can meet the requirement of the semitrailer carrying a truck for railway transportation on the bumper 4.

Further, the locking mechanism is a first latch 3, the upright post 2 is provided with a first insertion hole 221 and a second insertion hole 222, and the distance from the first insertion hole 221 to the first hinge shaft 21 is equal to the distance from the second insertion hole 222 to the first hinge shaft 21. Even if first insertion hole 221, second insertion hole 222 and the first pin hole are located on the same circumference centered on the central axis of first hinge shaft 21.

The upright post 2 includes two side plates 22 and a connecting plate 23, the connecting plate 23 is fixedly connected between the two side plates 22, and the first insertion hole 221 and the second insertion hole 222 are opened on the two side plates 22. The concrete mode that stand 2 upper end articulates on the rear end roof beam 11 of semitrailer main part 1 through first articulated shaft 21 is, and the upper end of two curb plates 22 corresponds has seted up the shaft hole, and first articulated shaft 21 wears to locate in the shaft hole, and then articulates on the rear end roof beam 11 of semitrailer main part 1 through first articulated shaft 21. The stand 2 can set up two, and the fixed connecting rod 5 that sets up between two stands 2 is as an organic whole with two stand 2 fixed connection through connecting rod 5 to make two stand synchronous swings, strengthening structural strength and the connection reliability to bumper 4.

Referring to fig. 4, the column 2 further includes a seat plate 24 and a hinge shaft limiting plate 25, the seat plate 24 is fixedly disposed between the two side plates 22, and the hinge shaft limiting plate 25 is detachably fixed to the seat plate 24. An annular groove 211 is formed on the circumferential surface of the first hinge shaft 21, and one side of the hinge shaft stopper plate 25 is bent toward the annular groove 211 and is caught in the annular groove 211, thereby preventing the first hinge shaft 21 from slipping out of the shaft holes at the upper ends of the two side plates 22. In this way, under the condition that first articulated shaft 21 is inconvenient to be limited and prevented from falling off from two ends (the outer sides of two side plates 22), first articulated shaft 21 is positioned and prevented from falling off from the shaft hole from the inner sides of two side plates 22. Wherein, articulated shaft limiting plate 25 accessible bolt detachably is fixed in bedplate 24, the installation of being convenient for is dismantled.

Referring to fig. 3 to 7, the rear end beam 11 is provided with a first pin hole, and the pillar 2 is turned around the first hinge shaft 21 such that the first pin hole faces the first insertion hole 221 or the second insertion hole 222. When the first pin hole is opposite to the first insertion hole 221, the upright 2 is in the first position. When the first pin hole is opposite to the second insertion hole 222, the upright 2 is in the second position. The first position may be a position where the column 2 is vertical, and the second position may be a position where the column 2 is at an angle to the vertical. In the present embodiment, when the upright 2 is in the second position, the angle between the upright 2 and the vertical is 54 °, i.e. the angle between the upright 2 and the ground is about 36 °. Wherein, first pinhole can be the trepanning of the fixed round pin cover 111 that sets up on rear end roof beam 11 to effectively increase the area of contact with first bolt 3, make rear end roof beam 11 to the holding power diffusion of first bolt 3, avoid first bolt 3 to bear for a long time comparatively concentrated shearing force and take place to warp or damage.

The upright 2 is turned over from the first position to the rear and upwards to reach the second position, i.e. the height of the second position is higher than that of the first position. The first bolt 3 is inserted into the first insertion hole 221 and the second insertion hole 222 of the pin sleeve 111 to lock the upright 2 at the first position, and is inserted into the second insertion hole 221 and the sleeve hole of the pin sleeve 111 to lock the upright 2 at the second position. When the upright post 2 is at the first position, the bumper 4 reaches a lower position, and the requirement of driving the semitrailer to run on the road on the bumper 4 can be met. When the upright post 2 is at the second position, the bumper 4 reaches a higher position, and the requirement on the height of the bumper 4 when the semitrailer is loaded on a train for railway transportation can be met.

The bumper 4 includes a bumper body 41, a flip hinge base 42 and a second latch 43, the bumper body 41 is fixed to the flip hinge base 42, and the flip hinge base 42 is hinged to the lower end of the pillar 2 through a second hinge shaft 26. The second hinge shaft 26 is provided at the lower ends of the two side plates 22 of the column 2. A third insertion hole 223 and a fourth insertion hole 224 are formed through the two side plates 22 of the upright 2, and the distance from the third insertion hole 223 to the second hinge shaft 26 is equal to the distance from the fourth insertion hole 224 to the second hinge shaft 26.

The turning hinge base 42 is provided with a second pin hole, and the turning hinge base 42 is turned around the second hinge shaft 26 so that the second pin hole is opposite to the third insertion hole 223 or the fourth insertion hole 224. When the second pin hole faces the third insertion hole 223, the bumper body 41 is in the third position. When the second pin hole faces the fourth insertion hole 224, the bumper body 41 is in the fourth position. The fourth position is reached by turning the column 2 from the third position to the lower front. When the pillar 2 is located at the first position and the bumper main body 41 is located at the third position, the rear side surface of the bumper main body 41 faces directly rearward. When the pillar 2 is located at the second position and the bumper body 41 is located at the fourth position, the rear side surface of the bumper body 41 faces directly rearward. The purpose of making the rear side surface of the bumper body 41 face directly rearward is to satisfy the requirement that the bumper be normally set, that is, the direction of the bumper is normally required to be directed rearward.

The second bolt 43 is inserted into the second pin hole and the third insertion hole 223, so that the bumper body 41 can be locked at the third position, and when the upright post 2 is locked at the first position, the requirement of the semitrailer highway transportation on the orientation/direction of the bumper can be met. The bumper body 41 can be locked at the fourth position by being inserted into the second pin hole and the fourth insertion hole 224, and when the upright post 2 is locked at the second position, the requirements of the semitrailer on the orientation/direction of the bumper during railway transportation when the semitrailer is loaded on a train are met.

Referring to fig. 8, further, a limit groove 421 is formed in the flip hinge support 42, a limit block 27 corresponding to the limit groove 421 is fixedly disposed on the side plate 22 of the upright post 2, the limit block 27 is relatively moved in the limit groove 421 by rotating the flip hinge support 42 around the second hinge shaft 26, the limit block 27 stops the bumper body 41 at the third position by touching one end of the limit groove 421, and the limit block 27 stops the bumper body 41 at the fourth position by touching the other end of the limit groove 421. Therefore, when the position of the bumper body 41 needs to be adjusted, only the turning hinge seat 42 needs to be rotated to the corresponding position, and when the turning hinge seat 42 is stopped by the limit block 27 and cannot rotate any more, the second pin hole just faces the jack at the corresponding position. For example: when the bumper body 41 needs to be switched from the third position to the fourth position, the overturning hinge seat 42 only needs to be overturned forwards and downwards, and when the position where the overturning cannot be continued is reached, the bumper body 41 is just at the fourth position, at this time, the second pin hole is just opposite to the fourth jack 224, so that the second pin hole is conveniently centered in the fourth jack 224, and then the second bolt 43 is inserted into the centered second pin hole and the centered fourth jack 224, so that the positioning of the bumper body 41 at the fourth position is completed. On the contrary, the bumper body 41 is switched from the fourth position to the third position, and the operation of the same principle is also performed, so that the positioning is convenient and quick.

The semitrailer with the adjustable bumper adjusts the bumper in an operation and use process as follows:

in a mode of driving the semitrailer to run on a highway, the first bolt 3 is inserted into the sleeve hole and the first insertion hole 221 of the pin sleeve 111, and the upright post 2 is locked at the first position in a vertical/vertical state, so that the bumper 4 is at a lower position, and the requirement of the semitrailer on the height of the bumper during highway running is met. The second bolt 43 is inserted into the second pin hole and the third insertion hole 223, and the bumper body 41 is locked at the third position where the rear side surface is in the vertical state, that is, the bumper body 41 is in the normal setting state of being horizontally rearward.

Under the mode that "highway-railway intermodal" semitrailer carries on the railway transportation on the train, upwards overturn stand 2 backward around first articulated shaft 21, through inserting first bolt 3 in trepanning and the second jack 222 of round pin cover 111, with the second position that stand 2 locked in to make bumper 4 be in higher position, with the requirement of satisfying highway-railway intermodal semi-trailer bumper height. At this time, the rear side surface of the bumper body 41 faces rearward and upward, and is not in the normal state. Then, the flip hinge base 42 is rotated about the second hinge shaft 26, and the second bolt 43 is inserted into the second pin hole and the fourth insertion hole 224, so that the bumper body 41 is locked at the fourth position where the rear side surface is in the vertical state, that is, the bumper body 41 is in the normal state of being horizontally oriented rearward.

While the present application has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present application may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. A semi-trailer with an adjustable bumper, comprising:

a semitrailer body;

the upper end of the upright post is hinged to a rear end beam of the semitrailer body through a first hinged shaft;

the bumper is arranged at the lower end of the upright post;

the locking mechanism is arranged on the rear end beam and used for locking the upright post at a first position when the upright post rotates to the first position around the first articulated shaft, and locking the upright post at a second position when the upright post rotates to the second position around the first articulated shaft;

the height of the lower end of the upright post in the first position is higher than the height of the lower end of the upright post in the second position.

2. The semitrailer with the adjustable bumper according to claim 1, characterized in that the locking mechanism is a first bolt, and the upright post is provided with a first jack and a second jack;

the rear end beam is provided with a first pin hole, and the upright post is turned around the first hinge shaft, so that the first pin hole can be opposite to the first jack or the second jack; when the first pin hole is opposite to the first jack, the upright post is positioned at a first position; when the first pin hole is opposite to the second jack, the upright post is positioned at a second position;

the first bolt is inserted into the first pin hole and the first inserting hole, so that the upright post can be locked at the first position; the first bolt is inserted into the first pin hole and the second inserting hole, so that the upright post can be locked at the second position.

3. The semitrailer with the adjustable bumper as claimed in claim 2, wherein the bumper comprises a bumper body, a turnover hinge seat and a second bolt, the bumper body is fixed on the turnover hinge seat, the turnover hinge seat is hinged to the lower end of the upright post through a second hinge shaft, and the upright post is provided with a third insertion hole and a fourth insertion hole;

a second pin hole is formed in the turnover hinged support, and the turnover hinged support is turned around the second hinge shaft, so that the second pin hole can be opposite to the third jack or the fourth jack; when the second pin hole is opposite to the third jack, the bumper body is located at a third position; when the second pin hole is opposite to the fourth jack, the bumper body is located at a fourth position; the upright column is turned forwards and downwards from the third position to reach the fourth position;

when the upright is located at the first position and the bumper body is located at the third position, the rear side surface of the bumper body faces to the right back; when the upright is located at the second position and the bumper body is located at the fourth position, the rear side surface of the bumper body faces to the right back;

the second bolt is inserted into the second pin hole and the third insertion hole, so that the bumper body can be locked at the third position, and the second bolt is inserted into the second pin hole and the fourth insertion hole, so that the bumper body can be locked at the fourth position.

4. The semitrailer with the adjustable bumper as claimed in claim 3, wherein the upright comprises two side plates and a connecting plate, the connecting plate is fixedly connected between the two side plates, and the third insertion hole and the fourth insertion hole are opened through the two side plates.

5. The semitrailer with adjustable bumpers according to claim 4, characterized in that said second articulation axes are provided at the lower ends of both of said side plates.

6. The semitrailer with the adjustable bumper as claimed in claim 3, wherein the upright post is fixedly provided with a limiting block, the overturning hinged support is provided with a limiting groove corresponding to the limiting block, the limiting block relatively moves in the limiting groove by rotating the overturning hinged support around the second hinge shaft, the bumper body is stopped at the third position by one end of the limiting block touching the limiting groove, and the bumper body is stopped at the fourth position by the other end of the limiting block touching the limiting groove.

7. The semitrailer with the adjustable bumper as claimed in claim 2, wherein the upright comprises two side plates and a connecting plate, the connecting plate is fixedly connected between the two side plates, and the first insertion hole and the second insertion hole are opened through the two side plates.

8. The semitrailer with the adjustable bumper as claimed in claim 7, wherein axle holes are correspondingly formed at the upper ends of the two side plates, and the first hinge shaft is inserted into the axle holes.

9. The semitrailer with adjustable bumpers of claim 8, wherein said mast further includes a seat plate fixedly disposed between said two side plates and an articulated shaft limiting plate detachably secured to said seat plate;

and an annular groove is formed in the circumferential surface of the first hinged shaft, and one side of the hinged shaft limiting plate is bent towards the annular groove and clamped into the annular groove.

10. The semitrailer with the adjustable bumper as claimed in claim 1, wherein there are two of said uprights, a connecting rod is fixedly arranged between the two uprights, and the two uprights are fixedly connected into a whole through the connecting rod.

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