Axle connecting assembly for trailer air suspension

Abstract

The utility model relates to the technical field of vehicle suspension devices, in particular to an axle connecting assembly for an air suspension of a trailer, which comprises an axle and a connecting structure, and the connecting structure comprises an upper supporting plate, a plate spring, a limiting seat, a lower supporting plate, a U-shaped bolt, a nut, a shell, a first spring and a check block. During use, the plate spring is placed on the top of the upper supporting plate, then the U-shaped bolt is placed on the limiting seat and penetrates through the first through hole and the second through hole, the check block is pulled to be away from the U-shaped bolt, the first spring is stretched, the nut is screwed on the U-shaped bolt, then the check block is loosened, the first spring recovers to the original shape, the check block moves till the nut moves downwards, and then the plate spring is fixed. Connection of the plate spring and the axle is completed; the nut can be limited to move downwards through the check block, looseness of the nut on the U-shaped bolt due to long-term bumping and vibration of the vehicle is prevented, and the problem that connection between the air suspension and the vehicle is loosened is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle suspension devices, in particular to an axle connection component used for trailer air suspension. Background Art

[0002] A trailer is a vehicle towed by a car but without its own power drive device. Trailers are often used for cargo transportation. In order to reduce the vehicle's bumps and collisions with cargo when the road is bumpy, an air suspension is needed to cushion the vehicle. The air suspension needs to be connected to the axle using a connecting component.

[0003] The current prior art CN217705409U discloses an axle connection assembly for a trailer air suspension, in which the connection between the axle and the leaf spring is replaced by a steel casting, including a leaf spring cover plate, a leaf spring support plate and an axle support plate arranged from top to bottom, and the leaf spring and the axle are fixedly connected under the tightening action of U-shaped bolts and nuts, which is beneficial to improving the driving stability and avoiding the increase in usage costs caused by frequent maintenance in the later stage.

[0004] However, in the above method, since the air suspension is fixedly connected to the axle by using U-bolts to fix the axle and the leaf spring, the nuts may become loose after long-term bumps and vibrations, thereby loosening the connection between the air suspension and the vehicle, affecting driving safety. Utility Model Content

[0005] The utility model aims to provide an axle connection assembly for a trailer air suspension, which can prevent the nut on the U-bolt from loosening due to long-term bumping and vibration of the vehicle, thereby avoiding the problem of loose connection between the air suspension and the vehicle.

[0006] To achieve the above-mentioned purpose, the utility model provides an axle connection assembly for a trailer air suspension, comprising an axle and a connection structure, wherein the connection structure comprises an upper support plate, a leaf spring, a limit seat, a lower support plate, a U-shaped bolt, a nut, a housing, a first spring and a stopper;

[0007] The upper support plate is fixedly connected to the axle and is located at the top of the axle, and the upper support plate has a plurality of first through holes, which are respectively located on both sides of the upper support plate; the leaf spring is located at the top of the upper support plate; the limit seat is fixedly connected to the leaf spring and is located on the top of the leaf spring; the lower support plate is located at the bottom of the axle, and the lower support plate has a plurality of second through holes, which are respectively located on both sides of the lower support plate; the U-shaped bolt is located on the side of the limit seat and passes through the first through hole and the second through hole; the nut is threadedly connected to the U-shaped bolt and is located on the side of the U-shaped bolt; the shell is fixedly connected to the lower support plate and is located on the side of the lower support plate; the first spring is fixedly connected to the lower support plate and is located inside the lower support plate; the stopper is fixedly connected to the first spring and is located on the side of the first spring.

[0008] Wherein, the upper supporting plate has a limiting groove; the limiting groove is located at the top of the upper supporting plate.

[0009] Wherein, the axle connection assembly for the trailer air suspension also includes a limiting structure; the limiting structure is arranged on the side of the block.

[0010] Among them, the limiting structure includes a second spring, a pull block and a locking rod; the second spring is fixedly connected to the block and is located at the bottom of the block; the pull block is fixedly connected to the second spring and is located at the bottom of the second spring; the locking rod is fixedly connected to the pull block, and is slidably connected to the block, and passes through the spring and the block.

[0011] Wherein, the limiting structure further includes a positioning seat; the positioning seat is fixedly connected to the shell and is located at the bottom of the shell.

[0012] Wherein, the axle connection assembly for the trailer air suspension also includes an anti-slip structure; the anti-slip structure is arranged on the side of the nut.

[0013] Wherein, the anti-slip structure includes a locking bolt and an anti-slip pad; the locking bolt is threadedly connected to the nut and is located on the side of the nut; the anti-slip pad is located inside the nut.

[0014] The utility model discloses an axle connection component for a trailer air suspension. When in use, the upper support plate is first welded to the position to be installed on the axle, the limit seat is welded to the leaf spring, and then the leaf spring is placed on the top of the upper support plate. The upper support plate limits the left and right positions of the leaf spring, and then the U-bolt is placed on the limit seat, and the U-bolt passes through the first through hole and the second through hole. The limit seat limits the front and rear positions of the U-bolt, and then the stopper is pulled away from the U-bolt so that the first spring is stretched, and then the nut is screwed on the U-bolt and the stopper is loosened. The first spring returns to its original state so that the stopper moves until the nut moves down, completing the connection between the leaf spring and the axle; the stopper can limit the nut from moving down, thereby preventing the nut on the U-bolt from loosening due to long-term bumps and vibrations of the vehicle, and avoiding the problem of loose connection between the air suspension and the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0016] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0017] Figure 2 It is an overall cross-sectional view of the first embodiment of the utility model.

[0018] Figure 3 It is a structural schematic diagram of the limiting seat of the first embodiment of the utility model.

[0019] Figure 4 It is a structural schematic diagram of an upper supporting plate of the first embodiment of the utility model.

[0020] Figure 5 It is a structural schematic diagram of the lower support plate of the first embodiment of the utility model.

[0021] Figure 6 It is a schematic diagram of the overall structure of the second embodiment of the utility model.

[0022] Figure 7 It is an overall cross-sectional view of the second embodiment of the utility model.

[0023] Figure 8 It is an overall cross-sectional view of the third embodiment of the utility model.

[0024] 101-axle, 102-connecting structure, 103-upper support plate, 104-leaf spring, 105-limiting seat, 106-lower support plate, 107-U-shaped bolt, 108-nut, 109-housing, 110-first spring, 111-stopper, 112-first through hole, 113-second through hole, 114-limiting groove, 201-limiting structure, 202-second spring, 203-pull block, 204-locking rod, 205-positioning seat, 301-anti-slip structure, 302-locking bolt, 303-anti-slip pad. DETAILED DESCRIPTION

[0025] The first embodiment of the present application is:

[0026] See also Figure 1-Figure 5 ,in, Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model. Figure 2 is a sectional view of the entire first embodiment of the utility model, Figure 3 This is a schematic diagram of the structure of the limit seat of the first embodiment of the utility model. Figure 4 This is a schematic structural diagram of the upper support plate of the first embodiment of the utility model. Figure 5 It is a structural schematic diagram of the lower support plate of the first embodiment of the utility model.

[0027] The utility model provides an axle connection component for a trailer air suspension, comprising an axle 101 and a connection structure 102, wherein the connection structure 102 comprises an upper support plate 103, a leaf spring 104, a limit seat 105, a lower support plate 106, a U-shaped bolt 107, a nut 108, a housing 109, a first spring 110 and a stopper 111; the above-mentioned scheme can prevent the nut 108 on the U-shaped bolt 107 from loosening due to long-term bumping and vibration of the vehicle, thereby avoiding the problem of loose connection between the air suspension and the vehicle.

[0028] According to this specific embodiment, the upper support plate 103 is fixedly connected to the axle 101 and is located at the top of the axle 101. The upper support plate 103 has a plurality of first through holes 112, and the plurality of first through holes 112 are respectively located on both sides of the upper support plate 103; the leaf spring 104 is located at the top of the upper support plate 103; the limit seat 105 is fixedly connected to the leaf spring 104 and is located at the top of the leaf spring 104; the lower support plate 106 is located at the bottom of the axle 101, and the lower support plate 106 has a plurality of second through holes 113, and the plurality of second through holes 113 are respectively located at the on both sides of the lower support plate 106; the U-shaped bolt 107 is located on the side of the limit seat 105 and passes through the first through hole 112 and the second through hole 113; the nut 108 is threadedly connected to the U-shaped bolt 107 and is located on the side of the U-shaped bolt 107; the shell 109 is fixedly connected to the lower support plate 106 and is located on the side of the lower support plate 106; the first spring 110 is fixedly connected to the lower support plate 106 and is located inside the lower support plate 106; the stopper 111 is fixedly connected to the first spring 110 and is located on the side of the first spring 110. When in use, the upper support plate 103 is first welded to the position to be installed on the axle 101, the limit seat 105 is welded to the leaf spring 104, and then the leaf spring 104 is placed on the top of the upper support plate 103. The upper support plate 103 limits the left and right positions of the leaf spring 104. Subsequently, the U-shaped bolt 107 is placed on the limit seat 105, and the U-shaped bolt 107 is passed through the first through hole 112 and the second through hole 113. The limit seat 105 limits the front and rear positions of the U-shaped bolt 107, and then the stopper 111 is pulled. The first spring 110 is stretched by moving the nut 108 away from the U-bolt 107, and then the nut 108 is screwed onto the U-bolt 107 and the stopper 111 is loosened. The first spring 110 returns to its original state and the stopper 111 moves to the nut 108 to move downward, thereby completing the connection between the leaf spring 104 and the axle 101. The stopper 111 can limit the nut 108 from moving downward, thereby preventing the nut 108 on the U-bolt 107 from loosening due to long-term bumps and vibrations of the vehicle, thereby avoiding the problem of loose connection between the air suspension and the vehicle.

[0029] The upper supporting plate 103 has a limiting groove 114, and the limiting groove 114 is located at the top of the upper supporting plate 103. The limiting groove 114 is adapted to the shape of the leaf spring 104, and the limiting groove 114 can limit the left and right positions of the leaf spring 104.

[0030] When using the utility model, the upper support plate 103 is first welded to the position to be installed on the axle 101, the limiting seat 105 is welded to the leaf spring 104, and then the leaf spring 104 is placed in the limiting groove 114 on the upper support plate 103, the limiting groove 114 limits the left and right position of the leaf spring 104, and then the U-shaped bolt 107 is placed on the limiting seat 105, and the U-shaped bolt 107 is passed through the first through hole 112 and the second through hole 113, the limiting seat 105 limits the front and rear position of the U-shaped bolt 107, and then the U-shaped bolt 107 is pulled out. The stopper 111 is moved away from the U-bolt 107, so that the first spring 110 is stretched, and then the nut 108 is screwed onto the U-bolt 107 and the stopper 111 is loosened, so that the first spring 110 returns to its original state and the stopper 111 moves until the nut 108 moves downward, thereby completing the connection between the leaf spring 104 and the axle 101; the stopper 111 can be used to limit the nut 108 from moving downward, thereby preventing the nut 108 on the U-bolt 107 from loosening due to long-term bumps and vibrations of the vehicle, thereby avoiding the problem of loose connection between the air suspension and the vehicle.

[0031] The second embodiment of the present application is:

[0032] Based on the first embodiment, please refer to Figure 6-Figure 7 ,in, Figure 6 It is a schematic diagram of the overall structure of the second embodiment of the utility model. Figure 7 It is an overall cross-sectional view of the second embodiment of the utility model.

[0033] The axle connection assembly for the trailer air suspension provided by the utility model further includes a limiting structure 201 ; the limiting structure 201 includes a second spring 202 , a pull block 203 , a locking rod 204 and a positioning seat 205 .

[0034] According to this specific embodiment, the limiting structure 201 is arranged on the side of the stopper 111. The limiting structure 201 can fix the position of the stopper 111, thereby improving the limiting effect of the stopper 111 on the nut 108.

[0035] The second spring 202 is fixedly connected to the block 111 and is located at the bottom of the block 111; the pull block 203 is fixedly connected to the second spring 202 and is located at the bottom of the second spring 202; the lock rod 204 is fixedly connected to the pull block 203, slidably connected to the block 111, and penetrates the spring and the block 111. The second spring 202 is in a stretched state between the block 111 and the pull block 203, and the elastic potential energy of the second spring 202 can make the lock rod 204 press against the housing 109, thereby preventing the block 111 from moving.

[0036] Secondly, the positioning seat 205 is fixedly connected to the housing 109 and is located at the bottom of the housing 109 .

[0037] When using the utility model, the upper support plate 103 is first welded to the position to be installed on the axle 101, the limiting seat 105 is welded to the leaf spring 104, and then the leaf spring 104 is placed in the limiting groove 114 on the upper support plate 103, the limiting groove 114 limits the left and right position of the leaf spring 104, and then the U-shaped bolt 107 is placed on the limiting seat 105, and the U-shaped bolt 107 is passed through the first through hole 112 and the second through hole 113, and the limiting seat 105 limits the front and rear position of the U-shaped bolt 107. The pull block 203 is then pulled to move the locking rod 204 out of the positioning seat 205. At this time, the second spring 202 is stretched. Subsequently, the stopper 111 is pulled away from the U-bolt 107, so that the first spring 110 is stretched. The nut 108 is screwed onto the U-bolt 107 and the stopper 111 is released. The first spring 110 returns to its original state, so that the stopper 111 moves until the nut 108 moves downward, and at the same time, the locking rod 204 is inserted into the positioning seat 205, completing the connection between the leaf spring 104 and the axle 101. The second spring 202 is in a stretched state between the block 111 and the pull block 203. The elastic potential energy of the second spring 202 can make the locking rod 204 press against the housing 109. At the same time, the positioning seat 205 limits the horizontal position of the locking rod 204 to prevent the block 111 from moving. The block 111 can limit the nut 108 from moving downward, preventing the nut 108 on the U-bolt 107 from loosening due to long-term bumps and vibrations of the vehicle, thereby avoiding the problem of loose connection between the air suspension and the vehicle.

[0038] The third embodiment of the present application is:

[0039] Based on the second embodiment, please refer to Figure 8 ,in, Figure 8It is an overall cross-sectional view of the third embodiment of the utility model.

[0040] The axle connection assembly for the trailer air suspension provided by the utility model further includes an anti-slip structure 301 ; the anti-slip structure 301 includes a locking bolt 302 and an anti-skid pad 303 .

[0041] According to this specific embodiment, the anti-slip structure 301 is arranged on the side of the nut 108. The anti-slip structure 301 can prevent the nut 108 from rotating and falling off from the U-bolt 107.

[0042] The locking bolt 302 is threadedly connected to the nut 108 and is located at the side of the nut 108; the anti-skid pad 303 is located inside the nut 108. The locking bolt 302 is rotated to move the locking bolt 302 toward the direction close to the U-shaped bolt 107, and the locking bolt 302 pushes the anti-skid pad 303 to make the anti-skid pad 303 and the U-shaped bolt 107 tightly pressed, so as to prevent the nut 108 from rotating and falling off the U-shaped bolt 107.

[0043] When using the utility model, the upper support plate 103 is first welded to the installation position on the axle 101, the limiting seat 105 is welded to the leaf spring 104, and then the leaf spring 104 is placed in the limiting groove 114 on the upper support plate 103, the limiting groove 114 limits the left and right position of the leaf spring 104, and then the U-shaped bolt 107 is placed on the limiting seat 105, and the U-shaped bolt 107 is passed through the first through hole 112 and the second through hole 113, the limiting seat 105 limits the front and rear position of the U-shaped bolt 107, and then the pulling block 203 is pulled to move the locking rod 204 out of the positioning seat 205, at this time the second spring 202 is stretched, and then the stopper 111 is pulled away from the U-shaped bolt 1 07, so that the first spring 110 is stretched, and then the nut 108 is screwed on the U-bolt 107 and then the stopper 111 is loosened, and the first spring 110 returns to its original state so that the stopper 111 moves to the nut 108 moving down, and at the same time the locking rod 204 is inserted into the positioning seat 205; after the nut 108 is screwed on the U-bolt 107, the locking bolt 302 is rotated to move the locking bolt 302 toward the direction close to the U-bolt 107, and the locking bolt 302 pushes the anti-skid pad 303 to make the anti-skid pad 303 press against the U-bolt 107, which can prevent the nut 108 from rotating and falling off the U-bolt 107, and complete the connection between the leaf spring 104 and the axle 101.

[0044] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. An axle connection assembly for a trailer air suspension, comprising an axle, characterized in that: It also includes the linking structure; The connection structure includes an upper supporting plate, a leaf spring, a limit seat, a lower supporting plate, a U-shaped bolt, a nut, a housing, a first spring and a stopper; The upper support plate is fixedly connected to the axle and is located at the top of the axle, and the upper support plate has a plurality of first through holes, which are respectively located on both sides of the upper support plate; the leaf spring is located at the top of the upper support plate; the limit seat is fixedly connected to the leaf spring and is located on the top of the leaf spring; the lower support plate is located at the bottom of the axle, and the lower support plate has a plurality of second through holes, which are respectively located on both sides of the lower support plate; the U-shaped bolt is located on the side of the limit seat and passes through the first through hole and the second through hole; the nut is threadedly connected to the U-shaped bolt and is located on the side of the U-shaped bolt; the shell is fixedly connected to the lower support plate and is located on the side of the lower support plate; the first spring is fixedly connected to the lower support plate and is located inside the lower support plate; the stopper is fixedly connected to the first spring and is located on the side of the first spring.

2. The axle connection assembly for trailer air suspension according to claim 1, characterized in that: The upper supporting plate has a limiting groove; the limiting groove is located at the top of the upper supporting plate.

3. The axle connection assembly for trailer air suspension according to claim 2, characterized in that: The axle connection assembly for the trailer air suspension also includes a limiting structure; the limiting structure is arranged on the side of the block.

4. The axle connection assembly for trailer air suspension according to claim 3, characterized in that: The limiting structure includes a second spring, a pull block and a locking rod; the second spring is fixedly connected to the block and is located at the bottom of the block; the pull block is fixedly connected to the second spring and is located at the bottom of the second spring; the locking rod is fixedly connected to the pull block, is slidably connected to the block, and passes through the spring and the block.

5. The axle connection assembly for trailer air suspension according to claim 4, characterized in that: The limiting structure also includes a positioning seat; the positioning seat is fixedly connected to the shell and is located at the bottom of the shell.

6. The axle connection assembly for trailer air suspension according to claim 5, characterized in that: The axle connection assembly for the trailer air suspension also includes an anti-slip structure; the anti-slip structure is arranged on the side of the nut.

7. An axle connection assembly for a trailer air suspension as claimed in claim 6, characterized in that: The anti-slip structure includes a locking bolt and an anti-skid pad; the locking bolt is threadedly connected to the nut and is located on the side of the nut; the anti-skid pad is located inside the nut.

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