Anti-impact ball pin assembly with adjustable gap
By designing an adjustable clearance, impact-resistant ball pin assembly and using an adjustment device and high-performance materials, the problem of increased clearance caused by wear or loosening in traditional ball pin assemblies has been solved, achieving precise connection and high stability of the ball pin assembly.
Patent Information
- Application Number
- CN202511384285.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-26
- Publication Date
- 2025-12-19
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Traditional ball joint assemblies experience wear or loosening over long-term use, leading to a gradual increase in clearance and a decrease in connection accuracy, which affects the stability and safety of the overall mechanical system.
An adjustable gap anti-impact ball pin assembly was designed. Through the combination of a second adjustment device and a spring washer locking nut, the gap between the ball seat and the ball pin head can be dynamically adjusted and fixed. 42CrMo steel and high phosphorus cast iron are used to improve the impact resistance, and wear-resistant coating and lubrication layer are coated on the friction surface to reduce wear.
Effective adjustment and fixation of the ball pin assembly clearance improves connection accuracy and the stability and safety of the mechanical system, while enhancing the ball pin assembly's impact resistance and service life.
Smart Images
Figure CN121162601A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of mechanical connectors, in particular to a gap-adjustable impact-resistant ball pin assembly. BACKGROUND
[0002] A ball pin is a mechanical component, usually composed of a ball and a pin shaft. The ball part has a smooth spherical surface, which can rotate flexibly within a certain range, and the pin shaft is used to fix the ball pin on other components to realize the function of connection and transmission. Ball pins are widely used in many fields. In the steering system of a car, the ball pin plays a key role, connecting the steering knuckle and control arm components, and can transmit the rotation of the steering wheel to the wheels to enable precise steering of the vehicle. At the same time, it can also adapt to the up-and-down bouncing of the wheels and the angle changes during steering to ensure the flexibility and reliability of the steering system.
[0003] The gap of the traditional ball pin assembly gradually increases during long-term use due to wear or looseness, resulting in a decrease in connection accuracy and a decrease in the stability and safety of the overall mechanical system. SUMMARY
[0004] To overcome the shortcomings of the prior art, the present application provides a gap-adjustable impact-resistant ball pin assembly, which solves the problem of the gap of the traditional ball pin assembly gradually increasing during long-term use due to wear or looseness, resulting in a decrease in connection accuracy and a decrease in the stability and safety of the overall mechanical system.
[0005] To achieve the above purpose, the present application is implemented by the following technical scheme: a gap-adjustable impact-resistant ball pin assembly, comprising a ball pin shaft, the bottom of the ball pin shaft is fixedly connected with a ball pin head, the bottom of the ball pin head is provided with a ball seat, the top of the ball seat is provided with a friction surface, the surface of the friction surface is coated with a wear-resistant coating, the top of the friction surface is provided with a lubricating layer, the outside of the ball seat and the ball pin head is provided with a protective shell, the top of the protective shell is provided with a mounting hole, the ball pin shaft protrudes from the protective shell through the mounting hole, the diameter of the mounting hole is smaller than the diameter of the ball pin head, the bottom of the ball seat is provided with a second adjusting rod, the outer wall of the second adjusting rod is threadedly connected with a second adjusting device, the bottom of the second adjusting device is provided with a spring washer and a locking nut, the bottom of the protective shell is provided with a first through hole, the second adjusting rod extends out of the bottom of the protective shell through the first through hole, and the second adjusting device is rotationally connected with the inner wall of the first through hole.
[0006] Preferably, the second adjusting device comprises a second rotating disc, a second connecting ring and a second adjusting nut, the bottom of the second rotating disc is fixedly connected to the top of the second connecting ring, the bottom of the second connecting ring is fixedly connected to the top of the second adjusting nut, the middle part of the second rotating disc and the second connecting ring are both provided with a through hole, the center of the through hole coincides with the center of the second adjusting nut, the through hole can allow the outer wall of the second adjusting rod to pass through, the bottom of the second rotating disc is located inside the protective shell, the diameter of the second rotating disc is greater than the diameter of the first through hole, the diameter of the second connecting ring is smaller than the diameter of the first through hole, and the second adjusting nut is located at the bottom of the first through hole.
[0007] Preferably, the outer wall of the ball pin rod is provided with a scale mark.
[0008] Preferably, the bottom of the ball seat is fixedly connected with a first adjusting rod, the outer wall of the first adjusting rod is threadedly connected with a first adjusting device, the bottom of the protective shell is provided with a second through hole, and the first adjusting rod extends out of the bottom of the protective shell through the second through hole.
[0009] Preferably, the first adjusting device comprises a first rotating disc, a first connecting ring and a first adjusting nut, the bottom of the first rotating disc is fixedly connected to the top of the first connecting ring, the bottom of the first connecting ring is fixedly connected to the top of the first adjusting nut, the middle part of the first rotating disc and the first connecting ring are both provided with a through hole, the center of the through hole coincides with the center of the first adjusting nut, the through hole can allow the outer wall of the first adjusting rod to pass through, the bottom of the first rotating disc is located inside the protective shell, the diameter of the first rotating disc is greater than the diameter of the second through hole, the diameter of the first connecting ring is smaller than the diameter of the second through hole, and the first adjusting nut is located at the bottom of the second through hole.
[0010] Preferably, the inner wall of the protective shell is provided with a sliding groove, the outer wall of the ball seat is fixedly connected with a stabilizing block, and the stabilizing block is slidingly connected to the inner wall of the sliding groove.
[0011] Preferably, the ball pin rod and the ball pin head are both made of 42CrMo steel, the ball seat is made of high-phosphorus cast iron, the phosphorus content in the high-phosphorus cast iron is 0.4-0.6% of the total composition, and the first adjusting device and the second adjusting device are both made of 316 stainless steel.
[0012] Preferably, the raw materials of the wear-resistant coating comprise aluminum oxide and zirconium oxide.
[0013] Preferably, the raw materials of the lubricating layer comprise lubricating oil, lubricating grease and molybdenum disulfide solid lubricant.
[0014] A method for using the gap-adjustable impact-resistant ball pin assembly, comprising the following steps: S1, install the ball pin head to the friction surface of the ball seat, ensure that there is an initial gap between the ball pin head and the ball seat; S2, connect the second adjusting device with the second adjusting rod at the bottom of the ball seat through threads, and preliminarily adjust the position of the second adjusting device; S3, accurately adjust the gap between the ball pin head and the ball seat by rotating the second adjusting device until the design requirement is reached; S4, install the spring washer and the locking nut to fix the position of the second adjusting device and prevent it from loosening; S5, check the movement flexibility of the ball pin assembly to ensure that it can work normally.
[0015] The application provides an impact-resistant ball pin assembly with adjustable gap. 1, the second adjusting device can be connected with the outer wall of the second adjusting rod through threads, the height position of the second adjusting rod can be changed by rotating the second adjusting device, and the height of the ball seat can be changed by the second adjusting rod, so that the top surface of the ball seat is in contact with the bottom surface of the ball pin head, thereby eliminating the gap in time when the gap of the ball pin assembly occurs, thereby solving the problem that the gap of the traditional ball pin assembly gradually increases due to wear or loosening during long-term use, which leads to the decrease of the connection accuracy, thereby causing the decrease of the stability and safety of the overall mechanical system.
[0016] 2, the ball pin rod and the ball pin head are made of 42CrMo steel, which has high strength, high toughness and good hardenability, can withstand large impact force, is not easy to deform and break under high impact load, and the ball seat is made of high phosphorus cast iron, the phosphorus eutectic hard points in which can improve the surface hardness and wear resistance of the ball seat, and enhance its impact resistance, thereby the impact resistance of the ball pin assembly is significantly improved under high impact load, and the safety and reliability of the mechanical system are ensured.
[0017] 3, the spring washer and the locking nut are arranged at the bottom of the second adjusting device, which can reliably lock and fix the gap of the ball pin assembly after dynamically adjusting the gap of the ball pin assembly, avoid loosening of the second adjusting device, thereby improving the adjustment accuracy and flexibility. DETAILED DESCRIPTION
[0018] Figure 1 is a perspective structural schematic diagram of the application; Figure 2 is a bottom view of the application; Figure 3 is a partial perspective structural schematic diagram of the ball pin head of the application; Figure 4 is a bottom view of the protective shell of the application; Figure 5 Figure 3 is a schematic diagram of the upper part of the protective shell of the present application; Figure 6 Figure 4 is a schematic diagram of the ball seat of the present application; Figure 7 Figure 5 is a schematic diagram of the ball seat of the present application from the bottom; Figure 8 Figure 6 is a schematic diagram of the installation structure of the first adjusting device and the second adjusting device of the present application; Figure 9 Figure 7 is a schematic diagram of the first adjusting device of the present application from the side; Figure 10 Figure 8 is a schematic diagram of the second adjusting device of the present application from the side.
[0019] In the figure, 1 is a ball pin rod, 2 is a scale mark, 3 is a ball pin head, 4 is a protective shell, 5 is a locking nut, 6 is a first adjusting rod, 7 is a second adjusting rod, 8 is a mounting hole, 9 is a first adjusting device, 901 is a first rotating disc, 902 is a first connecting ring, 903 is a first adjusting nut, 10 is a second adjusting device, 101 is a second rotating disc, 102 is a second connecting ring, 103 is a second adjusting nut, 11 is a spring washer, 12 is a first through hole, 13 is a second through hole, 14 is a sliding groove, 15 is a friction surface, 16 is a stabilizing block, and 17 is a ball seat. DETAILED DESCRIPTION
[0020] The technical solutions of the present application will be described clearly and completely below in combination with the drawings of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0021] Please refer to the drawings of the present application Figure 1 and the drawings of the present application Figure 2 and the drawings of the present application Figure 4 and the drawings of the present application Figure 8The embodiment of the present application provides a kind of gap adjustable impact resistance ball pin assembly, including ball pin rod 1, the bottom of ball pin rod 1 is fixedly connected with ball pin head 3, the bottom of ball pin head 3 is provided with ball seat 17, the top of ball seat 17 is opened with friction face 15, the surface of friction face 15 is coated with wear-resistant coating, the top of friction face 15 is provided with lubricating layer, the outside of ball seat 17 and ball pin head 3 is provided with protective shell 4, the top of protective shell 4 is opened with mounting hole 8, ball pin rod 1 is protruding from protective shell 4 by mounting hole 8, the diameter of mounting hole 8 is less than the diameter of ball pin head 3, the bottom of ball seat 17 is provided with second adjusting rod 7, the outer wall of second adjusting rod 7 is threadedly connected with second adjusting device 10, the bottom of second adjusting device 10 is provided with spring washer 11 and locking nut 5, the bottom of protective shell 4 is opened with first through hole 12, second adjusting rod 7 is extended out from the bottom of protective shell 4 by first through hole 12, second adjusting device 10 is rotatably connected with the inner wall of first through hole 12.
[0022] Specifically, the ball pin rod 1 can fix and connect the ball pin head 3, and also connect external structures; the ball pin head 3 can connect, transmit motion and force, and buffer; the ball seat 17 can support the ball pin head 3; the friction surface 15 provides a direct contact working area for the ball pin head 3 and the ball seat 17; the wear-resistant coating can reduce wear, improve durability, and maintain precision; the lubricating layer can reduce friction, reduce wear, and assist in heat dissipation; the protective shell 4 protects the ball pin head 3 and the ball seat 17 inside, and also positions and assists in adjusting the ball seat 17; the mounting hole 8 can install the ball pin head 3, and also provides a range for the ball pin rod 1 to move; the diameter of the mounting hole 8 is smaller than that of the ball pin head 3, so that the ball pin head 3 can avoid separating from the protective shell 4 during movement, causing the assembly to separate; the second adjusting rod 7 can move the ball seat 17 up and down, and thus adjust the distance between the ball seat 17 and the ball pin head 3; the second adjusting device 10 can control the position of the second adjusting rod 7; thus, when a gap is found after long-term use of the ball pin assembly, the second adjusting device 10 can change the position of the second adjusting rod 7, and thus adjust the position of the ball seat 17, so as to change the gap between the ball seat 17 and the ball pin head 3, thereby avoiding working in a long-term gap working condition, and solving the problem that the gap of the traditional ball pin assembly gradually increases due to wear or looseness during long-term use, resulting in a decrease in connection precision and stability and safety of the overall mechanical system; the spring washer 11 can prevent loosening and enhance connection stability; the locking nut 5 can tighten and lock, thereby avoiding loosening of the second adjusting device 10 due to vibration during work; the first through hole 12 can allow the second adjusting rod 7 to pass through, and thus the bottom threaded end of the second adjusting rod 7 protrudes, so that the ball seat 17 has a larger adjustment range through the second adjusting rod 7; the second adjusting device 10 and the first through hole 12 can support the second adjusting rod 7 when adjusting the up and down position of the second adjusting rod 7, preventing the second adjusting rod 7 from falling due to gravity.
[0023] Please refer to the attached Figure 2 and the attached Figure 4 and the attached Figure 10The second adjusting device 10 comprises a second rotating disc 101, a second connecting ring 102 and a second adjusting nut 103. The bottom of the second rotating disc 101 is fixedly connected to the top of the second connecting ring 102, and the bottom of the second connecting ring 102 is fixedly connected to the top of the second adjusting nut 103. The middle part of the second rotating disc 101 and the second connecting ring 102 are both provided with through holes, and the centers of the through holes coincide with the center of the second adjusting nut 103. The through holes can allow the outer wall of the second adjusting rod 7 to pass through. The bottom of the second rotating disc 101 is located inside the protective shell 4, and the diameter of the second rotating disc 101 is greater than the diameter of the first through hole 12. The diameter of the second connecting ring 102 is smaller than the diameter of the first through hole 12, and the second adjusting nut 103 is located at the bottom of the first through hole 12.
[0024] Specifically, the second rotating disc 101 can connect the second connecting ring 102. The second connecting ring 102 can connect the second adjusting nut 103. The height of the second connecting ring 102 is greater than the thickness of the bottom surface of the protective shell 4, so that there is an adjusting range, and the second connecting ring 102 cannot be tightly adjusted when adjusting the first adjusting nut 903. The middle part of the second rotating disc 101 and the second connecting ring 102 are both provided with through holes, and the centers of the through holes coincide with the center of the second adjusting nut 103. The through holes can allow the outer wall of the second adjusting rod 7 to pass through, so that the second adjusting rod 7 can smoothly pass through the second rotating disc 101 and the second connecting ring 102. The bottom of the second rotating disc 101 is located inside the protective shell 4, and the diameter of the second rotating disc 101 is greater than the diameter of the first through hole 12. Therefore, the second connecting ring 102 and the second adjusting nut 103 can be connected at the bottom of the protective shell 4 through the second rotating disc 101. After the second adjusting nut 103 and the second adjusting rod 7 are threadedly connected, the height position of the second adjusting rod 7 can be fixed through the second rotating disc 101. The diameter of the second connecting ring 102 is smaller than the diameter of the first through hole 12, so that the second adjusting nut 103 can freely rotate on the inner wall of the first through hole 12. The second adjusting nut 103 is located at the bottom of the first through hole 12, so that the second adjusting nut 103 can be conveniently adjusted.
[0025] Please refer to the accompanying drawings Figure 1 - the accompanying drawings Figure 3 The outer wall of the ball pin rod 1 is provided with a scale mark 2.
[0026] Specifically, the scale mark 2 can be used for accurate measurement when adjusting the gap.
[0027] Please refer to the accompanying drawings Figure 7 and the accompanying drawings Figure 8 The bottom of the ball seat 17 is fixedly connected with the first adjusting rod 6. The outer wall of the first adjusting rod 6 is threadedly connected with the first adjusting device 9. The bottom of the protective shell 4 is provided with a second through hole 13. The first adjusting rod 6 extends out of the bottom of the protective shell 4 through the second through hole 13.
[0028] Specifically, the first adjusting rod 6 can assist in controlling the height of the ball seat 17, and can fine-tune the position of the bottom of the ball seat 17; the first adjusting device 9 can control the height of the first adjusting rod 6; the second through hole 13 can pass the first adjusting rod 6.
[0029] Please refer to the attached Figure 2 and the attached Figure 4 and the attached Figure 9 The first adjusting device 9 includes a first rotating disc 901, a first connecting ring 902, and a first adjusting nut 903. The bottom of the first rotating disc 901 is fixedly connected to the top of the first connecting ring 902, and the bottom of the first connecting ring 902 is fixedly connected to the top of the first adjusting nut 903. The center of the through hole in the middle of the first rotating disc 901 and the first connecting ring 902 coincides with the center of the first adjusting nut 903, and the through hole can pass the outer wall of the first adjusting rod 6. The bottom of the first rotating disc 901 is located inside the protective shell 4, the diameter of the first rotating disc 901 is greater than the diameter of the second through hole 13, the diameter of the first connecting ring 902 is smaller than the diameter of the second through hole 13, and the first adjusting nut 903 is located at the bottom of the second through hole 13.
[0030] Specifically, the first rotating disc 901 can connect the first connecting ring 902; the first connecting ring 902 can connect the first adjusting nut 903, and the height of the first connecting ring 902 is greater than the thickness of the bottom surface of the protective shell 4, so that there is an adjusting range, avoiding being clamped by the first connecting ring 902 when adjusting the second adjusting nut 103; the center of the through hole in the middle of the first rotating disc 901 and the first connecting ring 902 coincides with the center of the first adjusting nut 903, and the through hole can pass the outer wall of the first adjusting rod 6, so that the first adjusting rod 6 can smoothly pass the first rotating disc 901 and the first connecting ring 902; the bottom of the first rotating disc 901 is located inside the protective shell 4, and the diameter of the first rotating disc 901 is greater than the diameter of the second through hole 13, so that the first connecting ring 902 and the first adjusting nut 903 can be connected at the bottom of the protective shell 4 through the first rotating disc 901, and then the height position of the first adjusting rod 6 can be fixed after the first adjusting nut 903 and the first adjusting rod 6 are threadedly connected through the first rotating disc 901; the diameter of the first connecting ring 902 is smaller than the diameter of the second through hole 13, so that the first adjusting nut 903 can freely rotate on the inner wall of the second through hole 13; the first adjusting nut 903 is located at the bottom of the second through hole 13, so that the first adjusting nut 903 can be conveniently adjusted.
[0031] Please refer to the attached Figure 5 -attached Figure 6The inner wall of the protective shell 4 is provided with a sliding groove 14, and the outer wall of the ball seat 17 is fixedly connected with a stabilizing block 16 which is slidingly connected with the inner wall of the sliding groove 14.
[0032] Specifically, the stabilizing block 16 can smoothly slide up and down in the interior through the sliding groove 14, so that the perpendicularity of the ball seat 17 can be maintained when the height of the second adjusting rod 7 is changed through the second adjusting device 10, and the ball seat 17 is prevented from rotating.
[0033] Please refer to the accompanying drawings Figure 3 and the accompanying drawings Figure 8 The ball pin rod 1 and the ball pin head 3 are both made of 42CrMo steel, the ball seat 17 is made of high-phosphorus cast iron, the phosphorus content in the high-phosphorus cast iron is 0.4-0.6% of the total composition, and the first adjusting device 9 and the second adjusting device 10 are both made of 316 stainless steel.
[0034] Specifically, the 42CrMo steel has high strength, high toughness and good hardenability, so that the ball pin rod 1 and the ball pin head 3 can maintain structural integrity when bearing complex loads and impacts, avoid deformation and fracture, and ensure reliable connection and motion transmission of the ball pin assembly; the ball seat 17 is made of high-phosphorus cast iron with a phosphorus content of 0.4-0.6%, in which the phosphorus eutectic hard points formed by phosphorus are uniformly distributed on the cast iron matrix, improving the surface hardness and wear resistance of the ball seat 17, so that it can resist long-term friction of the ball pin head 3, reduce wear and tear, prolong the service life of the ball seat 17 and the ball pin assembly, stabilize the gap between the ball pin head 3 and the ball seat 17, and ensure the connection accuracy of the mechanical system; the 316 stainless steel contains molybdenum elements, has excellent corrosion resistance, high strength and good processing performance, so that the first adjusting device 9 and the second adjusting device 10 can not easily rust and corrode in complex working environments, ensuring long-term normal use of the adjusting devices.
[0035] The raw materials of the wear-resistant coating include aluminum oxide and zirconium oxide.
[0036] Specifically, the aluminum oxide has high hardness, and the Mohs hardness can reach about 9, which can effectively resist the friction generated by the relative motion of the ball pin head 3 and the ball seat 17, significantly reduce the degree of wear and tear, and prolong the service life of the ball pin assembly; the zirconium oxide has unique phase transformation toughening properties, which can absorb energy when stressed, enhance the toughness of the coating, reduce the risk of crack generation and propagation, and also improve the thermal shock resistance of the coating, so that the wear-resistant coating can maintain good performance even when facing temperature changes during the operation of the ball pin assembly; through the mutual cooperation of aluminum oxide and zirconium oxide, the comprehensive performance of the wear-resistant coating is improved, ensuring the connection accuracy between the ball pin head and the ball seat 17 and maintaining the stability and safety of the mechanical system.
[0037] The raw materials of the lubricating layer include lubricating oil, lubricating grease and molybdenum disulfide solid lubricant.
[0038] Specifically, the lubricating oil can quickly form an oil film between the ball pin head 3 and the surface of the ball seat 17 due to good fluidity, effectively reducing the friction coefficient and wear, and carrying away part of the heat generated by friction, thereby playing a cooling role. The lubricating grease has high viscosity and adhesion, and can form a stable and durable lubricating film between the ball pin head 3 and the ball seat 17, which can continuously provide lubrication even under conditions such as mechanical vibration, impact or long-term static state, thereby preventing direct contact between metal surfaces. The molybdenum disulfide solid lubricant can maintain lubricating performance under extreme working conditions such as high temperature, high pressure and high vacuum, and can further reduce the friction resistance between the ball pin head 3 and the ball seat 17 during relative movement, thereby improving the smoothness of movement. Thus, the lubrication requirements of the ball pin assembly under different working conditions can be met, the service life of the ball pin assembly can be prolonged, and stable operation of the mechanical system can be ensured.
[0039] Please refer to the attached Figure 1 and attached Figure 9 A method for using the gap-adjustable impact-resistant ball pin assembly, comprising the following steps: S1, installing the ball pin head 3 to the surface of the friction surface 15 of the ball seat 17, and ensuring that there is an initial gap between the ball pin head 3 and the ball seat 17; S2, connecting the second adjusting device 10 to the second adjusting rod 7 at the bottom of the ball seat 17 through threads, and preliminarily adjusting the position of the second adjusting device 10; S3, precisely adjusting the gap between the ball pin head 3 and the ball seat 17 by rotating the second adjusting device 10, until the design requirements are met; S4, installing the spring washer 11 and the locking nut 5 to fix the position of the second adjusting device 10 and prevent it from loosening; S5, checking the movement flexibility of the ball pin assembly to ensure that it can work normally.
[0040] Specifically, the initial gap is reserved by S1 to provide space for subsequent adjustment and prevent the ball pin head from being installed too tightly to affect the movement of the ball pin head; the second adjusting device 10 is connected and preliminarily adjusted by S2 to ensure that the adjusting device is installed in place for precise adjustment; the gap is precisely adjusted by S3 to ensure that the connection accuracy is met and the stability of the mechanical system is improved; the adjusting device is fixed by S4 using the spring washer 11 and the locking nut 5 to prevent loosening, maintain the adjusted gap, and ensure long-term stable operation of the ball pin assembly; the movement flexibility is checked by S5 to timely find improper installation or adjustment, avoid faults, ensure normal work of the ball pin assembly, and meet the use requirements of the mechanical system.
[0041] The adjusting method of the above-mentioned gap-adjustable impact-resistant ball pin assembly is as follows: first, the second adjusting device 10 is screwed by a tool to quickly adjust the distance between the ball seat 17 and the ball pin head 3, the adjusting condition is checked by the scale mark 2, when roughly adjusted in place, the first adjusting device 9 is screwed to fine adjust, when completely adjusted in place, the spring washer 11 is installed at the bottom of the second adjusting device 10, then the locking nut 5 is installed at the bottom of the spring washer 11 to complete the adjusting work.
[0042] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences of the principles and spirit of the application and that numerous modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.
Claims
1. A clearance-adjustable, impact-resistant ball pin assembly, comprising a ball pin rod (1), characterized in that, The bottom of the ball pin (1) is fixedly connected to a ball pin head (3). A ball seat (17) is provided at the bottom of the ball pin head (3). A friction surface (15) is provided at the top of the ball seat (17). The surface of the friction surface (15) is coated with a wear-resistant coating. A lubricating layer is provided at the top of the friction surface (15). A protective shell (4) is provided outside the ball seat (17) and the ball pin head (3). A mounting hole (8) is provided at the top of the protective shell (4). The ball pin (1) protrudes from the protective shell (4) through the mounting hole (8). The diameter of the ball seat (17) is smaller than the diameter of the ball pin (3). The bottom of the ball seat (17) is provided with a second adjusting rod (7). The outer wall of the second adjusting rod (7) is threaded with a second adjusting device (10). The bottom of the second adjusting device (10) is provided with a spring washer (11) and a locking nut (5). The bottom of the protective shell (4) is provided with a first through hole (12). The second adjusting rod (7) extends out of the bottom of the protective shell (4) through the first through hole (12). The second adjusting device (10) is rotatably connected to the inner wall of the first through hole (12).
2. The adjustable clearance anti-impact ball pin assembly according to claim 1, characterized in that, The second adjusting device (10) includes a second turntable (101), a second connecting ring (102), and a second adjusting nut (103). The bottom of the second turntable (101) is fixedly connected to the top of the second connecting ring (102), and the bottom of the second connecting ring (102) is fixedly connected to the top of the second adjusting nut (103). The middle of the second turntable (101) and the second connecting ring (102) are provided with through holes, and the center of the through holes coincides with the center of the second adjusting nut (103). The through holes allow the outer wall of the second adjusting rod (7) to pass through. The bottom of the second turntable (101) is located inside the protective shell (4). The diameter of the second turntable (101) is larger than the diameter of the first through hole (12), and the diameter of the second connecting ring (102) is smaller than the diameter of the first through hole (12). The second adjusting nut (103) is located at the bottom of the first through hole (12).
3. The adjustable clearance anti-impact ball pin assembly according to claim 1, characterized in that, The outer wall of the ball pin (1) is provided with scale markings (2).
4. The adjustable clearance anti-impact ball pin assembly according to claim 1, characterized in that, The bottom of the ball seat (17) is fixedly connected to a first adjusting rod (6), and the outer wall of the first adjusting rod (6) is threadedly connected to a first adjusting device (9). The bottom of the protective shell (4) is provided with a second through hole (13), and the first adjusting rod (6) extends out of the bottom of the protective shell (4) through the second through hole (13).
5. The adjustable clearance anti-impact ball pin assembly according to claim 4, characterized in that, The first adjusting device (9) includes a first turntable (901), a first connecting ring (902), and a first adjusting nut (903). The bottom of the first turntable (901) is fixedly connected to the top of the first connecting ring (902), and the bottom of the first connecting ring (902) is fixedly connected to the top of the first adjusting nut (903). The middle of the first turntable (901) and the first connecting ring (902) are provided with through holes, and the center of the through holes coincides with the center of the first adjusting nut (903). The through holes allow the outer wall of the first adjusting rod (6) to pass through. The bottom of the first turntable (901) is located inside the protective shell (4). The diameter of the first turntable (901) is larger than the diameter of the second through hole (13), and the diameter of the first connecting ring (902) is smaller than the diameter of the second through hole (13). The first adjusting nut (903) is located at the bottom of the second through hole (13).
6. The adjustable clearance anti-impact ball pin assembly according to claim 1, characterized in that, The inner wall of the protective shell (4) is provided with a sliding groove (14), and the outer wall of the ball seat (17) is fixedly connected with a stabilizing block (16), which is slidably connected to the inner wall of the sliding groove (14).
7. The adjustable clearance anti-impact ball pin assembly according to claim 5, characterized in that, The ball pin (1) and the ball pin head (3) are both made of 42CrMo steel, the ball seat (17) is made of high phosphorus cast iron, the phosphorus content in the high phosphorus cast iron is 0.4-0.6% of the total composition, and the first adjustment device (9) and the second adjustment device (10) are both made of 316 stainless steel.
8. The adjustable clearance anti-impact ball pin assembly according to claim 1, characterized in that, The raw materials for the wear-resistant coating include alumina and zirconium oxide.
9. The adjustable clearance anti-impact ball pin assembly according to claim 1, characterized in that, The raw materials for the lubricating layer include lubricating oil, lubricating grease, and molybdenum disulfide solid lubricant.
10. A method of using the adjustable clearance anti-impact ball pin assembly according to any one of claims 1-9, characterized in that, Includes the following steps: S1. Install the ball pin (3) onto the friction surface (15) of the ball seat (17) to ensure that there is an initial gap between the ball pin (3) and the ball seat (17); S2. Connect the second adjusting device (10) to the second adjusting rod (7) at the bottom of the ball seat (17) via a thread, and initially adjust the position of the second adjusting device (10); S3. By rotating the second adjustment device (10), precisely adjust the gap between the ball pin head (3) and the ball seat (17) until the design requirements are met; S4. Install the spring washer (11) and the lock nut (5) to fix the position of the second adjusting device (10) and prevent it from loosening; S5. Check the movement flexibility of the ball pin assembly to ensure it is functioning properly.