CN219667908U

CN219667908U - Air suspension for trailer

Info

Publication number: CN219667908U
Application number: CN202223496125.7U
Authority: CN
Inventors: 郄少峰; 许会朋; 孙文周; 杜宁; 张士福
Original assignee: Shijiazhuang Aotong Machinery Manufacturing Co ltd
Current assignee: Shijiazhuang Aotong Machinery Manufacturing Co ltd
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-09-12
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses an air suspension for a trailer, which comprises an axle and a suspension main body arranged on the axle, wherein the axle is fixedly connected with the suspension main body through a U-shaped bolt, a nut is connected to the U-shaped bolt in a threaded manner, and a locking component is arranged on the U-shaped bolt; the anti-loosening assembly comprises a compression spring and a sliding block, wherein a sliding groove is formed in the U-shaped bolt, the compression spring and the sliding block are both located in the sliding groove, the compression spring drives the sliding block to slide in the sliding groove, one side, away from the compression spring, of the sliding block is a step surface, and the nut is abutted to the step surface along the axial direction of the U-shaped bolt. The utility model can firmly connect the axle with the suspension main body, and prevent the suspension main body from falling off and affecting the driving safety caused by loose connection of the nut due to vibration.

Description

Air suspension for trailer

Technical Field

The utility model relates to the technical field of air suspensions, in particular to an air suspension for a trailer.

Background

A trailer refers to a vehicle that is towed by an automobile and is itself unpowered. A combination of a vehicle (truck or tractor, forklift) and one or more trailers. The trailer is often used for carrying cargo, and in order to reduce the bump of the vehicle and the collision of the cargo when the road bumps, the suspension is needed to buffer and damp the vehicle, and the trailer generally uses an air suspension to achieve a good damping effect; however, the air suspension is generally fixedly connected by using a U-shaped bolt when the axle is fixedly connected, and nuts are easy to loosen after long-term jolt vibration, so that the air suspension is connected with a vehicle loose, and the driving safety is influenced.

Disclosure of Invention

The present utility model aims to solve the above-mentioned drawbacks of the prior art and to provide an air suspension for a trailer.

In order to solve the problems, the utility model adopts the following technical scheme:

the air suspension for the trailer comprises an axle and a suspension main body arranged on the axle, wherein the axle and the suspension main body are fixedly connected through a U-shaped bolt, a nut is connected to the U-shaped bolt in a threaded manner, and a locking assembly is arranged on the U-shaped bolt;

the anti-loosening assembly comprises a compression spring and a sliding block, wherein a sliding groove is formed in the U-shaped bolt, the compression spring and the sliding block are both located in the sliding groove, the compression spring drives the sliding block to slide in the sliding groove, one side, away from the compression spring, of the sliding block is a step surface, and the nut is abutted to the step surface along the axial direction of the U-shaped bolt.

Preferably, a threaded hole is formed in the nut, and a locking bolt is connected in the threaded hole in a threaded mode.

Preferably, one end of the locking bolt, which is close to the U-shaped bolt, is rotatably connected with a locking block.

Preferably, the suspension main body comprises a guide arm, a connecting frame, a shock absorber and an air spring, wherein the guide arm is fixedly arranged on the axle through a U-shaped bolt, the connecting frame and the air spring are respectively positioned at two ends of the guide arm, one end of the shock absorber is hinged with the connecting frame, and the other end of the shock absorber is hinged with the axle.

Preferably, the air spring is a membrane air spring.

Preferably, a cushion block is arranged on the upper surface of the guide arm, and the U-shaped bolt is positioned on the cushion block.

The beneficial effects of adopting above-mentioned technical scheme to produce lie in:

1. the anti-loosening assembly can prevent the nut from loosening, when the suspension main body is fastened, the sliding block is pressed into the sliding groove, then the nut is screwed on the U-shaped bolt, the sliding block pops up under the action of the compression spring along with the continuous screwing of the nut, and after the nut is locked, the lower end face of the nut is abutted with one step of the step surface of the sliding block, so that the nut cannot move downwards, and the anti-loosening effect is achieved;

2. after the nut is locked, the locking block is abutted with the side wall of the U-shaped bolt after the locking bolt is screwed into the threaded hole of the nut, so that the nut can be prevented from rotating on the U-shaped bolt, and the anti-loose effect is achieved.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic perspective view of the U-bolt of the present utility model in a locked condition;

FIG. 3 is a schematic view of the structure of the U-bolt of the present utility model;

fig. 4 is an enlarged view of a portion a of fig. 3;

FIG. 5 is a schematic perspective view of a slider of the present utility model;

fig. 6 is a schematic perspective view of a locking bolt of the present utility model.

In the figure: the automobile axle is characterized in that the automobile axle is provided with an axle, a U-shaped bolt, a nut, a compression spring, a sliding block, a sliding chute, a locking bolt, a locking block, a guide arm, a connecting frame, a shock absorber, an air spring and a cushion block, wherein the U-shaped bolt, the nut, the compression spring, the sliding block, the locking bolt, the locking block, the guide arm, the connecting frame, the shock absorber, the air spring and the cushion block are arranged in sequence, and the cushion block is arranged in sequence.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1 to 5, an air suspension for a trailer comprises an axle 1 and a suspension main body arranged on the axle 1, wherein the suspension main body is used for buffering and damping a vehicle body and preventing the vehicle body from jolting, the axle 1 and the suspension main body are fixedly connected through a plurality of groups of U-shaped bolts 2, nuts 3 are connected onto the U-shaped bolts 2 in a threaded manner, and a locking assembly is arranged on the U-shaped bolts 2; in this embodiment, the U-bolts 2 are provided with four groups, the suspension body is provided with two groups, and each group of suspension body is fixedly connected through the two groups of U-bolts 2;

the anti-loosening assembly comprises a compression spring 4 and a sliding block 5, wherein a sliding groove 6 is formed in the threaded rod of the U-shaped bolt 2 along the axial direction of the threaded rod, the compression spring 4 and the sliding block 5 are both located in the sliding groove 6, the compression spring 4 drives the sliding block 5 to slide in the sliding groove 6, the width and the height of the sliding block 5 are identical with those of the sliding groove 6, therefore, the sliding block 5 can only slide in the sliding groove 6 along the radial direction of the threaded rod of the U-shaped bolt, and cannot deflect in the left-right direction and the up-down direction, one side, away from the compression spring 4, of the sliding block 5 is a step surface, and the nut 3 is abutted to the step surface along the axial direction of the U-shaped bolt. According to the utility model, a suspension main body is arranged on an axle 1, the suspension main body is fixedly connected with the axle 1 through U-shaped bolts 2, each group of suspension main bodies is provided with two groups of U-shaped bolts 2, the two groups of U-shaped bolts 2 are respectively positioned at two sides of the axle 1, a lower connecting plate is arranged between the two groups of U-shaped bolts 2, the lower connecting plate is positioned below the axle 1, and after nuts 3 are screwed, the U-shaped bolts 2 and the lower connecting plate work together to clamp and fix the suspension main body and the axle 1 together; when the nut 3 is screwed on the threaded rod of the U-shaped bolt 2, the sliding block 5 is pressed into the sliding groove 6, the compression spring 4 is in a compressed state, the nut 3 can be freely screwed on the threaded rod of the U-shaped bolt 2, after the nut 3 is overlapped with the sliding block 5, the sliding block 5 is loosened, the sliding block 5 is ejected to the outer side of the sliding groove 6 under the action of the compression spring 4, but at the moment, the sliding block 5 is blocked by the nut 3 to prevent the sliding block from being completely ejected, and because one side of the sliding block 5 away from the compression spring 4 is a step surface, after the nut 3 is screwed, the lower end surface of the nut 3 is abutted with one step of the sliding block 5, and because one side of the sliding block 5, which is contacted with the nut 3, is a step surface, the nut 3 can be adapted to the requirements of different heights after the nut is screwed; after the nut 3 is abutted against the step surface of the slide block 5, the nut 3 is blocked and limited when moving downwards, so that the nut 3 cannot move downwards, and the nut 3 cannot be loosened no matter how the vehicle vibrates; when the nut 3 is required to be disassembled, the nut 3 can be operated by only pressing the sliding block 5 into the sliding groove 6.

In another embodiment, as shown in fig. 6, a threaded hole is formed in a side wall of the nut 3, the threaded hole is communicated with a hole in the nut 3, and a locking bolt 7 is screwed in the threaded hole. In this embodiment, after the nut 3 is screwed, the locking bolt 7 is screwed into the threaded hole on the nut 3, so that one end of the locking bolt 7 is abutted against the threaded rod of the U-shaped bolt 2, and the locking bolt 7 can play a role in locking and fixing the nut 3, thereby playing a role in preventing loosening.

In another embodiment, a locking block 8 is rotatably connected to one end of the locking bolt 7, which is close to the U-shaped bolt 2, and the locking block 8 is a rubber block, in this embodiment, the locking block 8 is configured to increase friction force with the surface of the U-shaped bolt 2, prevent loosening of the nut 3 caused by vibration, and deform the rubber block, and after the rubber block is extruded, the rubber block deforms to fill up a thread gap of the U-shaped bolt 2, so that the nut 3 cannot rotate, thereby playing a role in locking and loosening prevention; simultaneously, the locking block 8 is rotationally connected with the locking bolt 7, so that the locking block 8 can only move along the horizontal direction and can not rotate when the U-shaped bolt 2 contacts and extrudes, and the situation that the locking block 8 is crushed to cause blockage when rotating is avoided, and the nut 3 can not be disassembled is avoided.

In another embodiment, the suspension body includes a guiding arm 9, a connecting frame 10, a shock absorber 11 and an air spring 12, the guiding arm 9 is fixedly arranged on the axle 1 through a U-shaped bolt 2, the connecting frame 10 and the air spring 12 are respectively fixedly arranged at two ends of the guiding arm 9, one end of the shock absorber 11 is hinged with the connecting frame 10, and the other end is hinged with the axle 1. In this embodiment, the guiding arm 9 is fixedly disposed on the axle 1, one end of the connecting frame 10 is connected with the guiding arm 9, the other end is fixedly connected with the vehicle body, one end of the air spring 12 is fixedly connected with the guiding arm 9, the other end is fixedly connected with the vehicle body, the air spring 12 can buffer and damp the vehicle body during the vibration of the vehicle body, jolt is avoided, and the shock absorber 11 also plays a role in buffering and damping.

In another embodiment, the air spring 12 is a membrane air spring.

In another embodiment, a cushion block 13 is arranged on the upper surface of the guide arm 9, and the U-shaped bolt 2 is positioned on the cushion block 13. In this embodiment, the pad 13 can function to increase the force receiving area, preventing the guide arm 9 from being displaced.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The air suspension for the trailer comprises an axle (1) and a suspension main body arranged on the axle (1), and is characterized in that the axle (1) and the suspension main body are fixedly connected through a U-shaped bolt (2), a nut (3) is connected to the U-shaped bolt (2) in a threaded manner, and a locking assembly is arranged on the U-shaped bolt (2);

the anti-loosening assembly comprises a compression spring (4) and a sliding block (5), wherein a sliding groove (6) is formed in the U-shaped bolt (2), the compression spring (4) and the sliding block (5) are both located in the sliding groove (6), the compression spring (4) drives the sliding block (5) to slide in the sliding groove (6), one side, far away from the compression spring (4), of the sliding block (5) is a step surface, and the nut (3) is abutted to the step surface along the axial direction of the U-shaped bolt.

2. An air suspension for a trailer according to claim 1, characterized in that the side wall of the nut (3) is provided with a threaded hole, and the threaded hole is internally connected with a locking bolt (7).

3. An air suspension for a trailer according to claim 2, characterized in that the locking bolt (7) is rotatably connected with a locking block (8) at one end close to the U-bolt (2).

4. The air suspension for a trailer according to claim 1, wherein the suspension body comprises a guide arm (9), a connecting frame (10), a shock absorber (11) and an air spring (12), the guide arm (9) is fixedly arranged on the axle (1) through a U-shaped bolt (2), the connecting frame (10) and the air spring (12) are respectively fixedly arranged at two ends of the guide arm (9), one end of the shock absorber (11) is hinged with the connecting frame (10), and the other end of the shock absorber is hinged with the axle (1).

5. An air suspension for a trailer according to claim 4, characterized in that the air spring (12) is a membrane air spring.

6. An air suspension for a trailer according to claim 4, characterized in that the upper surface of the guide arm (9) is provided with a spacer (13), and the U-bolt (2) is located on the spacer (13).