Front bracket with shock absorption function
Patent Information
- Application Number
- CN202522239787.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-10-27
- Estimated Expiration
- 2035-10-23
AI Technical Summary
并且冲击载荷也会通过托架反向作用于农具，对精密农具的作业效果和寿命造成不利影响的问题，本实用新型提供了一种具有减震功能的前托架
[0013]1、本实用新型缓冲弹簧通过自身的弹性形变，吸收并分散部分震动能量，从而减小传递到滑套及支撑座上的震动幅度。同时，支撑座底部中心与安装基板底部之间安装的液压阻尼器也会同步工作。液压阻尼器内部填充有阻尼介质，当支撑座受到震动而产生上下位移时，液压阻尼器会通过介质的流动和压力变化，产生与震动方向相反的阻尼力，进一步抵消和衰减震动。通过缓冲弹簧和液压阻尼器的共同作用，该前托架能够有效减少拖拉机在行驶过程中产生的震动对牵引设备的影响，提高牵引的稳定性和安全性。此外，端部连接座和标准牵引销座的设置，也使得该前托架能够方便地与各种牵引设备进行连接和拆卸，提高了使用的便捷性和灵活性。
Smart Images
Figure CN224891136U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tractor front bracket technology, specifically to a front bracket with shock absorption function. Background Technology
[0002] The tractor front carrier is a key component connecting the tractor to front-mounted or semi-mounted agricultural implements, such as plows and seeders. Its core function is to transmit the tractor's traction force and support the weight of the implements. Currently, most known tractor front carriers adopt a rigid welded structure, mainly composed of a mounting plate, a drawbar, and reinforcing ribs. The mounting plate is rigidly fixed to the front end of the tractor's front axle or chassis with bolts, while the drawbar is used to attach the implements. This structure is simple in design, easy to manufacture, and inexpensive, meeting basic traction requirements, and is currently the most widely used traditional technical solution.
[0003] However, rigid bracket structures have significant drawbacks. When tractors operate on uneven terrain, they experience severe vibrations. Rigid brackets transmit these impact loads directly to the tractor chassis and front axle without any cushioning, easily leading to premature fatigue damage to tractor components and reducing driver comfort. Furthermore, the impact loads can also be transmitted back to implements via the bracket, negatively impacting the performance and lifespan of precision implements such as precision seeders. Therefore, we propose a front bracket with shock absorption capabilities. Utility Model Content
[0004] The purpose of this invention is to address the significant drawbacks of rigidly connected bracket structures. When tractors operate on uneven terrain, they experience severe vibrations. Rigid brackets directly transmit the impact load to the tractor chassis and front axle without any buffering, easily leading to premature fatigue damage to tractor components and reducing driver comfort. Furthermore, the impact load can also be transmitted back to the implements through the bracket, negatively impacting the performance and lifespan of precision implements. This invention provides a front bracket with shock absorption capabilities.
[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:
[0006] A front bracket with shock absorption function includes a mounting base for fixed connection to the front end of a tractor. Guide arms are fixedly connected to both sides of the front end of the mounting base, and the two guide arms are arranged in parallel. End connecting seats are fixedly connected to the front side of the two guide arms, and sliding sleeves are slidably sleeved on the circumferential surfaces of the two guide arms. A support seat is fixedly connected between the two sliding sleeves, and a standard traction pin seat is provided on the upper side of the support seat. A hydraulic damper is installed between the bottom center of the support seat and the bottom of the mounting base. A buffer spring is movably sleeved on the circumferential surfaces of the two guide arms corresponding to a section between the mounting base and the sliding sleeve.
[0007] Furthermore, the buffer spring is a helical compression spring, and the outer rear end of the guide arm is threadedly connected to a threaded end plate, with the front side of the threaded end plate abutting against the rear side of the buffer spring. The middle part of the guide arm is movably sleeved with a wear-resistant contact pad corresponding to the rear side of the sliding sleeve, and the front side of the buffer spring abuts against the rear side of the wear-resistant contact pad.
[0008] Furthermore, a self-lubricating bushing is fixedly connected to the inner wall of the sliding sleeve, and the self-lubricating bushing is a graphite self-lubricating copper bushing.
[0009] Furthermore, the hydraulic damper is a double-acting cylinder, with the cylinder end of the hydraulic damper hinged to the mounting base via a first pin, and the piston rod end of the hydraulic damper hinged to the support via a second pin.
[0010] Furthermore, the front end of the support base extends upward to form a reinforcing plate, and a standard traction pin seat is fixedly connected to the upper end of the reinforcing plate. Reinforcing ribs are welded and fixed to both the front and rear of the reinforcing plate.
[0011] Furthermore, the mounting base plate has multiple bolt mounting holes, the hole layout of which matches the mounting surface of the front end of the target tractor, and the entire front bracket is rigidly fixed to the tractor by high-strength bolts.
[0012] The beneficial effects of this utility model are as follows:
[0013] 1. This utility model's buffer spring absorbs and disperses some of the vibration energy through its own elastic deformation, thereby reducing the vibration amplitude transmitted to the sliding sleeve and support. Simultaneously, the hydraulic damper installed between the bottom center of the support and the bottom of the mounting base also works synchronously. The hydraulic damper is filled with a damping medium. When the support is vibrated and undergoes vertical displacement, the hydraulic damper generates a damping force opposite to the vibration direction through the flow and pressure changes of the medium, further offsetting and attenuating the vibration. Through the combined action of the buffer spring and the hydraulic damper, this front bracket effectively reduces the impact of vibrations generated by the tractor during operation on the traction equipment, improving traction stability and safety. Furthermore, the end connecting seat and standard traction pin seat allow for easy connection and disassembly of the front bracket with various traction devices, improving ease of use and flexibility.
[0014] 2. This utility model, through the threaded end plate, can move back and forth by engaging with the thread on the rear side of the guide arm, thereby compressing or releasing the buffer spring. This allows for stepless adjustment of the spring preload to accommodate agricultural implements of different weights, thus reliably absorbing and dispersing vibration energy. The wear-resistant contact pad reduces direct friction between the sliding sleeve and the guide arm, lowering wear and extending the component's service life. Furthermore, its contact with the front side of the buffer spring ensures more even distribution of the spring force, resulting in a more stable and effective buffering effect.
[0015] 3. The reinforced upright plate of this utility model significantly enhances the structural strength of the front end of the support base, enabling it to more reliably withstand the traction force transmitted by the standard traction pin seat. As a key component connecting agricultural implements, the stability of the standard traction pin seat directly affects the safety of the entire traction system. Furthermore, the reinforcing ribs welded and fixed at both the front and rear of the reinforced upright plate further improve its bending stiffness and torsional resistance, effectively preventing deformation or breakage due to long-term stress, thereby ensuring the stability and durability of the front bracket under complex working conditions. Attached Figure Description
[0016] Figure 1 This is a perspective view of the present invention;
[0017] Figure 2 This is a rear-view perspective view of the present invention;
[0018] Figure 3 This is a bottom view of the present invention.
[0019] Reference numerals: 1. Mounting base plate; 2. Guide arm; 3. End connector; 4. Sliding sleeve; 5. Support seat; 6. Hydraulic damper; 7. First pin; 8. Second pin; 9. Buffer spring; 10. Threaded end plate; 11. Reinforcing plate; 12. Standard traction pin seat; 13. Reinforcing rib; 14. Wear-resistant contact pad. Detailed Implementation
[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.
[0021] Please see Figures 1-3 This utility model provides a front bracket with shock absorption function, including a mounting base plate 1 for fixed connection with the front end of a tractor. Guide arms 2 are fixedly connected to both sides of the front end of the mounting base plate 1, and the two guide arms 2 are arranged in parallel. End connecting seats 3 are fixedly connected to the front side of the two guide arms 2, and sliding sleeves 4 are slidably sleeved on the circumferential surface of the two guide arms 2. A support seat 5 is fixedly connected between the two sliding sleeves 4, and a standard traction pin seat 12 is provided on the upper side of the support seat 5. A hydraulic damper 6 is installed between the bottom center of the support seat 5 and the bottom of the mounting base plate 1. A buffer spring 9 is movably sleeved on the circumferential surface of the two guide arms 2 corresponding to a section between the mounting base plate 1 and the sliding sleeve 4.
[0022] The working principle and usage of this utility model are as follows: When a tractor encounters a bumpy road surface during operation, the resulting vibration is first transmitted to the mounting base 1. Since the mounting base 1 is fixedly connected to the guide arm 2, the vibration is further transmitted to the guide arm 2. At this time, the buffer spring 9, which is movably sleeved on the circumferential surface of the guide arm 2 and located between the mounting base 1 and the sliding sleeve 4, begins to function. The buffer spring 9 absorbs and disperses some of the vibration energy through its own elastic deformation, thereby reducing the vibration amplitude transmitted to the sliding sleeve 4 and the support seat 5. Simultaneously, the hydraulic damper 6 installed between the bottom center of the support seat 5 and the bottom of the mounting base 1 also works synchronously. The hydraulic damper 6 is filled with a damping medium. When the support seat 5 is vibrated and undergoes vertical displacement, the hydraulic damper 6 generates a damping force opposite to the direction of vibration through the flow and pressure changes of the medium, further offsetting and attenuating the vibration. Through the combined action of the buffer spring 9 and the hydraulic damper 6, this front bracket can effectively reduce the impact of vibration generated by the tractor during operation on the traction equipment, improving the stability and safety of traction. In addition, the end connector 3 and the standard traction pin seat 12 enable the front bracket to be easily connected and disassembled with various traction devices, improving the convenience and flexibility of use.
[0023] In this embodiment, preferably, the buffer spring 9 is a helical compression spring. A threaded end plate 10 is threadedly connected to the rear end of the outer wall of the guide arm 2, with the front side of the threaded end plate 10 abutting against the rear side of the buffer spring 9. A wear-resistant contact pad 14 is movably sleeved on the middle of the guide arm 2 corresponding to the rear side of the sliding sleeve 4, with the front side of the buffer spring 9 abutting against the rear side of the wear-resistant contact pad 14. The threaded end plate 10, through its threaded engagement with the rear side of the guide arm 2, can move back and forth, thereby compressing or releasing the buffer spring 9, achieving stepless adjustment of the spring preload to accommodate agricultural implements of different weights, thus reliably absorbing and dispersing vibration energy. The wear-resistant contact pad 14, on the one hand, reduces direct friction between the sliding sleeve 4 and the guide arm 2, reducing wear and extending the service life of the components; on the other hand, its abutment against the front side of the buffer spring 9 allows for more even transmission of the spring force, making the buffering effect more stable and effective.
[0024] In this embodiment, preferably, a self-lubricating bushing is fixedly connected to the inner wall of the sliding sleeve 4. The self-lubricating bushing is a graphite self-lubricating copper bushing. By using a graphite self-lubricating copper bushing as the self-lubricating bushing, a lubricating film can be automatically formed when the sliding sleeve 4 and the guide arm 2 slide relative to each other, reducing the frictional resistance between them, reducing the heat and wear generated by friction, and further improving the reliability and durability of the entire front bracket. At the same time, this self-lubricating characteristic also reduces the dependence on lubricating grease in daily maintenance, reducing the cost of use and the workload of maintenance.
[0025] In this embodiment, preferably, the hydraulic damper 6 is a double-acting cylinder. The cylinder end of the hydraulic damper 6 is hinged to the mounting base 1 via a first pin 7, and the piston rod end of the hydraulic damper 6 is hinged to the support seat 5 via a second pin 8. The double-acting hydraulic damper 6 can generate a damping force opposite to the direction of displacement during tractor operation, regardless of whether the support seat 5 is displaced upwards or downwards, through the flow and pressure changes of the internal damping medium. The hinged connection between the cylinder end and the mounting base 1 via the first pin 7, and the hinged connection between the piston rod end and the support seat 5 via the second pin 8, ensures that the hydraulic damper 6 can flexibly follow the displacement of the support seat 5 and effectively transmit the damping force, thereby further enhancing the shock absorption effect of the front bracket.
[0026] In this embodiment, preferably, the front end of the support base 5 extends upward to form a reinforcing plate 11, and the standard traction pin seat 12 is fixedly connected to the upper end of the reinforcing plate 11. Reinforcing ribs 13 are welded and fixed to both the front and rear of the reinforcing plate 11. The reinforcing plate 11 significantly enhances the structural strength of the front end of the support base 5, enabling it to more reliably withstand the traction force transmitted by the standard traction pin seat 12. The standard traction pin seat 12, as a key component connecting agricultural implements, directly affects the safety of the entire traction system. The reinforcing ribs 13 welded and fixed to both the front and rear of the reinforcing plate 11 further improve its bending stiffness and torsional resistance, effectively preventing deformation or breakage due to long-term stress, thereby ensuring the stability and durability of the front bracket under complex working conditions.
[0027] In this embodiment, preferably, the mounting base plate 1 has multiple bolt mounting holes, the hole layout of which matches the mounting surface of the front end of the target tractor. High-strength bolts are used to rigidly fix the entire front bracket to the tractor. By creating multiple bolt mounting holes on the mounting base plate 1 that match the mounting surface of the target tractor, and using high-strength bolts for rigid fixation, a stable connection between the front bracket and the tractor is ensured. This connection method not only effectively transmits the tractor's traction force but also ensures the stability and reliability of the front bracket under complex loads. Simultaneously, the use of high-strength bolts improves the durability and anti-loosening ability of the connection, reducing the risk of connection failure due to vibration or long-term use.
[0028] 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 front bracket with shock absorption function, characterized in that: The system includes a mounting base plate (1) for fixed connection with the front end of a tractor. Guide arms (2) are fixedly connected to both sides of the front end of the mounting base plate (1), and the two guide arms (2) are arranged in parallel. End connecting seats (3) are fixedly connected to the front side of the two guide arms (2), and sliding sleeves (4) are slidably sleeved on the circumferential surface of the two guide arms (2). A support seat (5) is fixedly connected between the two sliding sleeves (4), and a standard traction pin seat (12) is provided on the upper side of the support seat (5). A hydraulic damper (6) is installed between the bottom center of the support seat (5) and the bottom of the mounting base plate (1). A buffer spring (9) is movably sleeved on the circumferential surface of the two guide arms (2) between the mounting base plate (1) and the sliding sleeve (4).
2. A front bracket with shock absorption function according to claim 1, characterized in that: The buffer spring (9) is a helical compression spring. The outer rear end of the guide arm (2) is threadedly connected to a threaded end plate (10), and the front side of the threaded end plate (10) abuts against the rear side of the buffer spring (9). The middle part of the guide arm (2) is movably sleeved with a wear-resistant contact pad (14) corresponding to the rear side of the sliding sleeve (4), and the front side of the buffer spring (9) abuts against the rear side of the wear-resistant contact pad (14).
3. A front bracket with shock absorption function according to claim 1, characterized in that: The inner wall of the sliding sleeve (4) is fixedly connected to a self-lubricating bushing, which is a graphite self-lubricating copper bushing.
4. A front bracket with shock absorption function according to claim 1, characterized in that: The hydraulic damper (6) is a double-acting cylinder. The cylinder end of the hydraulic damper (6) is hinged to the mounting base (1) through the first pin (7), and the piston rod end of the hydraulic damper (6) is hinged to the support seat (5) through the second pin (8).
5. A front bracket with shock absorption function according to claim 1, characterized in that: The front end of the support base (5) extends upward to form a reinforcing plate (11), and a standard traction pin seat (12) is fixedly connected to the upper end of the reinforcing plate (11). Reinforcing ribs (13) are welded and fixed to both the front and rear of the reinforcing plate (11).
6. A front bracket with shock absorption function according to claim 1, characterized in that: The mounting base plate (1) has multiple bolt mounting holes, the hole layout of which matches the mounting surface at the front of the target tractor, and the entire front bracket is rigidly fixed to the tractor by high-strength bolts.