An integrally formed hydraulic cylinder upper bracket for a semi-trailer
By designing anti-loosening clamping components on the support of the semi-trailer hydraulic cylinder, the problem of loose mounting bolts was solved, thereby improving the stability and safety of the support.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN QIANGLONG AUTOMOBILE TECH CO LTD
- Filing Date
- 2025-08-07
- Publication Date
- 2026-06-26
AI Technical Summary
The mounting bolts on the hydraulic cylinder upper bracket of existing semi-trailers are prone to loosening during long-term bumpy driving, resulting in unstable position, affecting the normal operation of the hydraulic cylinder and causing safety hazards.
An integrated hydraulic cylinder upper bracket for semi-trailers was designed, comprising a mounting plate, connecting frame, mounting holes, mounting cover, and anti-loosening clamping assembly. The gear is driven to rotate by a handwheel and a rotating shaft, causing the screw to rotate and slide out the anti-loosening clamping plate to hold the bolt, thus preventing loosening.
This effectively prevents the mounting bolts from loosening, ensures the stability of the hydraulic cylinder support, avoids hydraulic cylinder position deviation, and improves the safety of the hydraulic system.
Smart Images

Figure CN224414020U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of hydraulic cylinder upper brackets for semi-trailers, specifically to an integrally formed hydraulic cylinder upper bracket for semi-trailers. Background Technology
[0002] The hydraulic cylinder support bracket on a semi-trailer is an important component of the hydraulic system. It primarily supports and secures the hydraulic cylinder, ensuring its proper functioning and stability. Hydraulic cylinders on semi-trailers are typically used to control the lifting and lowering of the trailer body, adjust the suspension system, or perform other hydraulic operations. The hydraulic cylinder support bracket serves to fix the cylinder's position, bear torque, reduce vibration, and ensure the safe operation of the hydraulic cylinder.
[0003] While existing hydraulic cylinder upper brackets for semi-trailers enable convenient connection between the hydraulic rod extension section and the semi-trailer cargo box, ensuring easy lifting and tilting of the cargo box according to actual needs, in actual use, after the hydraulic cylinder upper bracket is installed, the mounting bolts on the upper bracket are prone to loosening due to prolonged bumpy driving. This can lead to instability in the position of the upper bracket, causing the hydraulic cylinder to shift, which in turn affects the normal operation of the hydraulic system and may even pose a safety hazard. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] The technical problem to be solved by this utility model is to provide an integrally molded upper bracket for the hydraulic cylinder of a semi-trailer with anti-loosening function, based on the current state of the technology.
[0006] (II) Technical Solution
[0007] This utility model is achieved through the following technical solution: This utility model proposes an integrally formed upper bracket for a semi-trailer hydraulic cylinder, including a mounting plate. A connecting frame is installed in the middle of one side wall of the mounting plate. Mounting holes are reserved on the upper and lower sides of the connecting frame on the mounting plate. A mounting cover is installed between the mounting holes on each side of the mounting plate. An anti-loosening clamping assembly is installed inside the mounting cover. The anti-loosening clamping assembly includes a second gear, a screw, an anti-loosening clamping plate, a first gear, a rotating shaft, and a handwheel.
[0008] Furthermore, the connecting frame consists of two ear plates integrally formed with the mounting plate and a connecting shaft mounted on the ear plates. The connecting frame is the main connecting structure of the upper support of the hydraulic cylinder of the semi-trailer.
[0009] Furthermore, the mounting holes are formed on the mounting cover, and the mounting plate has two rows of mounting holes at each end.
[0010] Furthermore, the mounting cover is welded to the mounting plate, and the anti-loosening clamp is slidably engaged with the mounting cover.
[0011] Furthermore, the rotating shaft is installed in the middle of one side wall of the mounting cover, and the rotating shaft passes through the side wall of the mounting cover and rotates in cooperation with the mounting cover.
[0012] Furthermore, the handwheel is welded to the exposed end of the rotating shaft, and the gear is welded to the end of the rotating shaft away from the handwheel.
[0013] Furthermore, each of the mounting covers contains two screws, and the two screws are symmetrically installed on both sides of the mounting cover.
[0014] Furthermore, the screw is threadedly connected to the anti-loosening clamp, and the anti-loosening clamp has a C-shaped structure.
[0015] (III) Beneficial Effects
[0016] Compared with the prior art, this utility model has the following advantages:
[0017] This invention features a mounting cover installed at the mounting holes on both sides of the mounting plate, without the anti-loosening clamping component installed inside the mounting cover. During use, the upper bracket of the semi-trailer hydraulic cylinder can be rotated via a handwheel and shaft, causing gear one to rotate. This rotation, in turn, causes gear two to rotate the screw. The screw's rotation, through threaded transmission, causes the anti-loosening clamp to slide out from the mounting cover, abutting against the outside of the bolt installed at the mounting hole. This clamps and prevents loosening of the bolt on the mounting plate, thus avoiding instability and cylinder displacement caused by loose bolts on the upper bracket of the semi-trailer hydraulic cylinder. This results in better stability of the upper bracket during use. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of an integrally molded upper bracket for a semi-trailer hydraulic cylinder according to the present invention;
[0019] Figure 2 This is a top sectional view of the one-piece molded upper support for the hydraulic cylinder of a semi-trailer described in this utility model.
[0020] The annotations in the attached figures are explained as follows:
[0021] 1. Mounting cover; 2. Mounting plate; 3. Connecting bracket; 4. Mounting hole; 5. Anti-loosening clamping assembly; 501. Gear II; 502. Screw; 503. Anti-loosening clamping plate; 504. Gear I; 505. Rotating shaft; 506. Handwheel. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0023] like Figures 1-2 As shown in this embodiment, an integrally molded upper bracket for a semi-trailer hydraulic cylinder includes a mounting plate 2. A connecting frame 3 is installed in the middle of one side wall of the mounting plate 2. Mounting holes 4 are pre-drilled on the upper and lower sides of the connecting frame 3 on the mounting plate 2. A mounting cover 1 is installed between each mounting hole 4 on the mounting plate 2. An anti-loosening clamping assembly 5 is installed inside the mounting cover 1. The anti-loosening clamping assembly 5 includes a second gear 501, a screw 502, an anti-loosening clamping plate 503, a first gear 504, a rotating shaft 505, and a handwheel 506. In use, the handwheel 506 and the rotating shaft 505 can be used to... Gear 504 is rotated so that gear 501 can rotate screw 502. After screw 502 rotates, the anti-loosening clamp 503 will slide out from the mounting cover 1 under the action of thread transmission. The anti-loosening clamp 503 will abut against the outside of the bolt installed at the mounting hole 4, thereby clamping and preventing the bolt on the mounting plate 2 from loosening. This avoids the disadvantage of the semi-trailer hydraulic cylinder upper bracket being unstable and the hydraulic cylinder shifting due to the loosening of the mounting bolt on the semi-trailer hydraulic cylinder upper bracket, and makes the semi-trailer hydraulic cylinder upper bracket more stable during use.
[0024] like Figures 1-2 As shown, in this embodiment, the connecting frame 3 consists of two ear plates integrally formed with the mounting plate 2 and a connecting shaft mounted on the ear plates. The connecting frame 3 is the main connecting structure of the upper support of the hydraulic cylinder of the semi-trailer. The connecting frame 3 is mainly used to rotatably connect with the telescopic part of the hydraulic cylinder to ensure convenient use of the upper support of the hydraulic cylinder after installation. The mounting holes 4 are formed on the mounting cover 1. There are two rows of mounting holes 4 at each end of the mounting plate 2. With the help of the mounting holes 4 and the external mounting bolts, the upper support can be reliably installed on the semi-trailer body. The mounting cover 1 is welded to the mounting plate 2, and the anti-loosening clamp 503 is slidably engaged with the mounting cover 1.
[0025] like Figures 1-2As shown, in this embodiment, the rotating shaft 505 is installed in the middle of one side wall of the mounting cover 1. The rotating shaft 505 passes through the side wall of the mounting cover 1 and rotates with the mounting cover 1, which can ensure convenient rotation of the rotating shaft 505 relative to the mounting cover 1. The handwheel 506 is welded to the exposed end of the rotating shaft 505, and the gear 504 is welded to the end of the rotating shaft 505 away from the handwheel 506. The rotating shaft 505 can be conveniently rotated with the help of the handwheel 506. There are two screws 502 in each mounting cover 1, and the two screws 502 are symmetrically installed on both sides inside the mounting cover 1. After the screws 502 rotate, the anti-loosening clamp 503 will slide out of the mounting cover 1 under the action of thread transmission. The screws 502 are threadedly connected to the anti-loosening clamp 503. The anti-loosening clamp 503 has a C-shaped structure. After the anti-loosening clamp 503 slides out of the mounting cover 1, it will abut against the external bolt installed at the mounting hole 4, thereby achieving the purpose of preventing the mounting bolt from loosening.
[0026] The specific implementation process of this embodiment is as follows: In use, firstly, the external mounting bolts are passed through the mounting hole 4 and connected to the bottom of the semi-trailer body. Then, the hydraulic rod extension part on the semi-trailer frame is connected to the connecting frame 3, so that the upper bracket of the semi-trailer hydraulic cylinder can be put into use. During use, the gear 1 504 is rotated by the handwheel 506 and the rotating shaft 505. After the gear 1 504 rotates, the screw 502 is rotated by the gear 2 501. After the screw 502 rotates, the anti-loosening clamp 503 will slide out from the mounting cover 1 under the action of thread transmission, so that the anti-loosening clamp 503 abuts against the outside of the bolt installed at the mounting hole 4, thereby clamping and preventing the mounting bolt on the mounting plate 2 from loosening. This avoids the disadvantage of the upper bracket of the semi-trailer hydraulic cylinder being unstable and the hydraulic cylinder shifting due to the loosening of the mounting bolt on the upper bracket of the semi-trailer hydraulic cylinder, and makes the upper bracket of the semi-trailer hydraulic cylinder more stable during use.
[0027] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A one-piece molded upper support for a semi-trailer hydraulic cylinder, characterized in that: The mounting plate (2) includes a connecting frame (3) installed in the middle of one side wall of the mounting plate (2). The mounting plate (2) has mounting holes (4) reserved on the upper and lower sides of the connecting frame (3). A mounting cover (1) is installed between the mounting holes (4) on each side of the mounting plate (2). An anti-loosening clamping assembly (5) is installed inside the mounting cover (1). The anti-loosening clamping assembly (5) includes a second gear (501), a screw (502), an anti-loosening clamping plate (503), a first gear (504), a rotating shaft (505), and a handwheel (506).
2. The integrally molded upper bracket for a semi-trailer hydraulic cylinder according to claim 1, characterized in that: The connecting frame (3) consists of two ear plates integrally formed with the mounting plate (2) and a connecting shaft mounted on the ear plates. The connecting frame (3) is the main connecting structure of the upper support of the hydraulic cylinder of the semi-trailer.
3. The integrally molded upper bracket for a semi-trailer hydraulic cylinder according to claim 1, characterized in that: The mounting holes (4) are formed on the mounting cover (1), and there are two rows of mounting holes (4) at each end of the mounting plate (2).
4. The integrally molded upper bracket for a semi-trailer hydraulic cylinder according to claim 1, characterized in that: The mounting cover (1) is welded to the mounting plate (2), and the anti-loosening clamp (503) is slidably engaged with the mounting cover (1).
5. The integrally molded upper bracket for a semi-trailer hydraulic cylinder according to claim 1, characterized in that: The rotating shaft (505) is installed in the middle of one side wall of the mounting cover (1), and the rotating shaft (505) passes through the side wall of the mounting cover (1) and rotates with the mounting cover (1).
6. The integrally molded upper bracket for a semi-trailer hydraulic cylinder according to claim 5, characterized in that: The handwheel (506) is welded to the exposed end of the shaft (505), and the gear (504) is welded to the end of the shaft (505) away from the handwheel (506).
7. The integrally molded upper bracket for a semi-trailer hydraulic cylinder according to claim 6, characterized in that: Each of the mounting covers (1) contains two screws (502), and the two screws (502) are symmetrically installed on both sides inside the mounting cover (1).
8. The integrally molded upper bracket for a semi-trailer hydraulic cylinder according to claim 7, characterized in that: The screw (502) is threadedly connected to the anti-loosening clamp (503), and the anti-loosening clamp (503) has a C-shaped structure.