Steering damper sleeve mistake-proofing press equipment and method

Abstract

The application discloses a kind of damper sleeve of steering gear shock-absorbing mistake-proof press equipment and method, it is related to assembly equipment technical field, including machine body, press assembly, press assembly includes guide column, mounting plate, press cylinder, floating plate and press head;Positioning assembly, it includes boss, positioning cylinder, fixed part and correction unit, boss is set on machine body, positioning cylinder is horizontally arranged, fixed part is connected with the cylinder rod of positioning cylinder and is driven by it to approach or away from boss, correction unit is installed on fixed part, and when floating plate moves down, it can be pressed to move down relative fixed part and produce rotation, to carry out the position correction of damper sleeve in axial and circumferential direction.This application, realize dynamic correction to damper sleeve in axial;Positioning sleeve is driven to rotate, positioning ball rolls along damper sleeve circumferential direction, realize the rotational correction of damper sleeve in circumferential direction.Eliminate the inclination and deviation of damper sleeve, avoid press not in place, coaxiality difference and hole wall scratch etc., significantly improve assembly quality.

Description

Technical Field

[0001] This invention relates to the field of assembly equipment technology, specifically to a steering gear shock absorber sleeve anti-misfit pressing device and method. Background Technology

[0002] A steering gear is essentially a speed reduction transmission device. Its main function is to reduce and increase the input steering torque and change the direction of force transmission to drive the actuator. In the automotive industry, it connects the steering wheel and steering tie rod to achieve vehicle steering; in industrial machinery, similar devices are often used for power steering or right-angle transmission. During the manufacturing process of a steering gear, shock-absorbing sleeves need to be press-fitted onto it.

[0003] A search revealed a Chinese utility model patent with publication number CN218556183U, which discloses a steering gear shock absorber sleeve pressing device, including a worktable, a centering mechanism, a shock absorber sleeve mold, and a pressing mechanism. The centering mechanism includes a left centering rod and a right centering rod, both of which pass through a centering hole. The centering mechanism drives the left and right centering rods to move towards each other. The shock absorber sleeve mold has a through hole at its center that matches the shock absorber sleeve. The pressing mechanism is located above the shock absorber sleeve mold and includes a top plate. The pressing mechanism drives the top plate to move downwards and extend into the through hole. The centering mechanism centers the steering gear, ensuring that the mounting hole for the shock absorber sleeve is centered for easy pressing. By placing the shock absorber sleeve mold in the shock absorber sleeve and cooperating with the pressing mechanism to press the shock absorber sleeve into the steering gear, the purpose of automatic pressing is achieved.

[0004] However, the aforementioned existing devices have the following drawbacks in practical use: (1) Lack of pre-guidance and attitude correction mechanism, the damping sleeve is easy to tilt when entering the mold and cannot be automatically corrected during the pressing process. There is no guide structure at the entrance of the mold through hole. The damping sleeve is an elastic rubber part, which is very easy to tilt when it is put in. The pressing mechanism only presses down in a straight line in the vertical direction. It cannot generate a correction torque for the tilted damping sleeve, resulting in incomplete pressing and poor coaxiality between the damping sleeve and the steering gear mounting hole, which seriously affects the assembly quality. (2) Pressing method is prone to damage to shock absorber sleeve. When the direct pressing method is used, rigid impact is easy to damage the shock absorber sleeve. If auxiliary structures such as positioning sleeve are used, the positioning sleeve and the shock absorber sleeve will generate violent sliding friction during the pressing process, which is easy to cause scratches or tears on the surface of the shock absorber sleeve, affecting the appearance and performance of the component. (3) Existing correction schemes are costly and lack coaxiality assurance. Although some schemes eliminate tilt by moving and rotating the correction components, both moving and rotating the correction components require additional independent power sources, which significantly increases equipment costs. At the same time, the coaxiality between the correction components and the damping kit fitting holes and pressing heads is still poor, and the consistency of pressing accuracy is difficult to guarantee.

[0005] In summary, the existing device urgently needs an improvement solution that can effectively eliminate the tilting of the shock absorber sleeve, avoid pressure-fitting damage, and keep costs under control. Summary of the Invention

[0006] The purpose of this invention is to provide a steering gear shock absorber sleeve anti-misfit pressing device and method to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a steering gear shock absorber sleeve anti-misalignment pressing device, comprising: Organism; The pressing assembly includes a guide post, a mounting plate, a pressing cylinder, a floating plate, and a pressing head. The guide post is vertically mounted on the machine body. The mounting plate is fixed to the upper end of the guide post. The pressing cylinder is vertically mounted on the mounting plate. The floating plate is slidably fitted onto the guide post and located below the mounting plate. The cylinder rod of the pressing cylinder penetrates the mounting plate and is connected to the floating plate. The pressing head is coaxially connected to the lower part of the floating plate. The positioning assembly includes a boss, a positioning cylinder, a fixing part, and a correction unit. The boss is disposed on the machine body. The positioning cylinder is horizontally disposed. The fixing part is connected to the cylinder rod of the positioning cylinder and is driven by the cylinder rod to move closer to or away from the boss. The correction unit is mounted on the fixing part and can be pressed down relative to the fixing part and rotate when the floating plate moves down, so as to perform axial and circumferential position correction of the shock absorber sleeve.

[0008] Furthermore, the correction unit includes a sliding column, an elastic element, a positioning plate, and a rotation correction mechanism. The sliding column is vertically inserted into the fixed part and can slide freely up and down. The positioning plate is fixedly connected to the lower end of the sliding column. The elastic element abuts against the fixed part and the sliding column, causing the positioning plate to maintain an upward trend under normal conditions. The rotation correction mechanism is mounted on the positioning plate. The floating plate moves downward and presses against the upper end of the sliding column to make the positioning plate move downward, and triggers the rotation correction mechanism to rotate during the downward movement.

[0009] Furthermore, the rotation correction mechanism includes a positioning sleeve, a first gear, a drive column, a rotating sleeve, and a second gear. The positioning plate has a mounting hole at one end facing the boss. The positioning sleeve is rotatably connected to the mounting hole. The positioning sleeve has a clearance hole for the shock-absorbing sleeve to pass through. The first gear is coaxially fixed to the upper end of the positioning sleeve. The drive column is vertically fixed to the fixed part. The positioning plate has a through hole for the drive column to pass through. The rotating sleeve is rotatably connected to the through hole and slidably fitted onto the drive column. A helical transmission pair is provided between the drive column and the rotating sleeve. The second gear is coaxially fixed to the rotating sleeve and meshes with the first gear. When the positioning plate moves downward, the drive column moves relative to the rotating sleeve and drives the rotating sleeve to rotate through the helical transmission pair, thereby rotating the positioning sleeve through gear transmission.

[0010] Furthermore, the helical transmission pair includes a helical rolling groove and a rolling part. The helical rolling groove is formed on the periphery of the drive column, and the rolling part is rotatably embedded in the central hole wall of the rotating sleeve and engaged in the helical rolling groove. When the drive column moves relative to the rotating sleeve, the rolling part rolls along the helical rolling groove and squeezes the inner wall to drive the rotating sleeve to rotate.

[0011] Furthermore, a plurality of positioning balls are rotatably embedded in the wall of the clearance hole, and the plurality of positioning balls are arranged in an array along the axial direction of the positioning sleeve. The plurality of positioning balls form a clamping space for the shock-absorbing sleeve to pass through, and the inner diameter of the clamping space is not less than the outer diameter of the shock-absorbing sleeve.

[0012] Furthermore, a stop nut is threaded onto the upper end of the sliding column, and the elastic element is a spring. The spring is wrapped around the periphery of the sliding column, and the two ends of the spring elastically abut against the end faces of the fixing part and the stop nut, respectively.

[0013] Furthermore, a sliding sleeve is fixedly embedded in the fixing part, and the sliding post passes through the sliding sleeve and forms a sliding fit with the sliding sleeve.

[0014] Furthermore, the pressing assembly also includes a fixed plate, which is coaxially connected to the bottom of the floating plate, and the pressing head is coaxially connected to the bottom of the fixed plate. The bottom surface of the fixed plate can press against the top of the correction unit, and the outer diameter of the pressing head matches the outer diameter of the shock-absorbing sleeve.

[0015] Furthermore, the top of the boss is provided with several positioning pins that cooperate with the positioning holes of the steering gear, and the two sides of the machine body are also provided with induction switches for detecting human arms.

[0016] A method for anti-misalignment pressing of a steering gear shock absorber sleeve, using the steering gear shock absorber sleeve anti-misalignment pressing equipment as described above, includes the following steps: S1: Place the steering gear on the machine body and position it using the boss, so that the shock absorber fitting hole on the steering gear is coaxial with the press-fit head. S2: Start the positioning cylinder to drive the fixing part and the correction unit to move above the boss, so that the correction unit is coaxial with the press head, and vertically insert the shock-absorbing sleeve into the correction unit; S3: Start the press-fitting cylinder, drive the floating plate and press-fitting head to move down, the press-fitting head contacts the upper end face of the shock absorber and begins press-fitting; S4: When the floating plate continues to move downward, it presses against the correction unit. The correction unit moves downward relative to the fixed part under pressure, correcting the axial direction of the damping sleeve. At the same time, the correction unit rotates through the screw drive and gear drive during the downward movement, correcting the circumferential direction of the damping sleeve and eliminating the tilting phenomenon of the damping sleeve. S5: The press-fit cylinder continues to extend, and after the shock absorber sleeve is corrected, it is smoothly pressed into the assembly hole of the steering gear. After completion, the press-fit cylinder and the positioning cylinder are reset.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. Anti-tilting and automatic correction improve press fitting coaxiality and yield rate. By incorporating a positioning sleeve with locating balls, pre-guidance is provided during the insertion of the shock-absorbing sleeve. During the pressing and lowering process, the positioning sleeve moves synchronously with the positioning plate, and the locating balls roll downwards along the periphery of the shock-absorbing sleeve, achieving dynamic axial correction of the sleeve. Simultaneously, the positioning sleeve is driven to rotate, and the locating balls roll circumferentially, achieving circumferential rotational correction. The combination of these two methods effectively eliminates tilting and offset of the shock-absorbing sleeve, avoiding problems such as incomplete pressing, poor coaxiality, and hole wall scratches, significantly improving assembly quality.

[0018] 2. Cleverly utilize press-fitting power to achieve linkage correction, simplifying equipment structure. The downward and rotational movements of the correction component do not require an additional independent power source (such as a rotary motor or a pressing cylinder). Its power comes entirely from the downward movement of the floating plate driven by the pressing cylinder: the downward movement of the floating plate presses against the sliding column to achieve downward correction; the sliding column drives the positioning plate downward, causing the stationary drive column to displace relative to the rotating sleeve. Through the cooperation of the helical rolling groove and the rolling part, the linear motion is converted into rotational motion, which is then transmitted through gear meshing to rotate the positioning sleeve, achieving rotational correction. This mechanical linkage design greatly simplifies the equipment structure and reduces manufacturing costs and control complexity.

[0019] 3. Flexible floating design enables flexible contact and automatic reset. A spring is fitted onto the sliding column, which keeps the positioning plate moving upwards under normal conditions. During the initial pressing stage, the floating plate contacts the damping sleeve first, and only as it continues to move downwards does it press the sliding column against the spring resistance, achieving flexible pressing and correction of the damping sleeve and preventing damage from rigid impacts. After pressing is complete, the floating plate moves upwards, and the elastic restoring force of the spring automatically pushes the positioning plate and sliding column back upwards, preparing for the next pressing cycle. The operation is continuous and reliable.

[0020] 4. Rolling friction replaces sliding friction, protecting the surface of the shock absorber sleeve. The positioning balls arranged in an array on the inner wall of the positioning sleeve form a clamping space around the shock-absorbing sleeve. During the calibration process, the positioning balls and the shock-absorbing sleeve are in rolling contact, and the inner diameter of the clamping space is not less than the outer diameter of the shock-absorbing sleeve. This ensures the calibration force while avoiding severe sliding friction between the positioning sleeve and the shock-absorbing sleeve, effectively preventing scratches or tears on the surface of the shock-absorbing sleeve.

[0021] 5. Safety protection and precise positioning ensure operational safety and consistency. On the one hand, the machine body is equipped with sensor switches on both sides to detect whether the worker's arm has accidentally entered the dangerous area under the floating plate, thus achieving error prevention and safety protection; on the other hand, the positioning pin on the boss cooperates with the steering gear positioning hole to ensure the coaxiality of the steering gear shock absorber fitting hole and the pressing head, thus ensuring the consistency of pressing accuracy from the source. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a steering gear shock absorber sleeve anti-misalignment pressing device according to the present invention; Figure 2 for Figure 1 A schematic diagram showing the positional relationship of the structure from another perspective; Figure 3 This is a schematic diagram showing the positional relationship between the fixing part, the positioning plate, and the positioning assembly after assembly in this invention; Figure 4 for Figure 3 A schematic diagram of the positional relationship of the central structure from a first-person perspective; Figure 5 for Figure 3 Schematic diagram of the positional relationship of the middle structure from a second perspective; Figure 6 for Figure 3 Schematic diagram of the positional relationships of the central structure after explosive decomposition; Figure 7 This is a schematic diagram of the positioning sleeve in this invention; Figure 8 This is a schematic diagram of the rotating sleeve in this invention.

[0023] The reference numerals in the figures are explained as follows: 1. Body; 2. Cylinder support; 3. Positioning cylinder; 4. Inductive switch; 5. Floating plate; 6. Pressing cylinder; 7. Pressing head; 8. Guide column; 9. Positioning pin; 10. Boss; 11. Positioning plate; 12. Mounting plate; 13. Fixed plate; 14. First gear section; 15. Positioning ball; 16. Positioning sleeve; 17. Spring; 18. Stop nut; 19. Sliding column; 20. Fixed part; 21. Spiral rolling groove; 22. Drive column; 23. Second gear section; 24. Through hole; 25. Sliding sleeve; 26. Rotating sleeve; 27. Rolling part. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1-8 This invention provides a technical solution: a steering gear shock absorber sleeve anti-misalignment pressing device, comprising a body 1 of the pressing device, four guide posts 8 vertically mounted on the body 1, and a mounting plate 12 commonly fitted onto the upper ends of the four guide posts 8. The mounting plate 12 is fixedly mounted on the upper ends of the guide posts 8. A pressing cylinder 6 is vertically mounted on the mounting plate 12, the cylinder rod of the pressing cylinder 6 penetrating the mounting plate 12 and capable of free vertical sliding. A floating plate 5 is also commonly fitted onto the four guide posts 8, and the floating plate 5 can slide freely vertically around the periphery of the guide posts 8. The floating plate 5 is located below the mounting plate 12, and the downward-facing side of the floating plate 5 passes through… A fixing plate 13 is installed by screws. A pressing head 7 is coaxially connected to the bottom of the fixing plate 13 by screws. The outer diameter of the pressing head 7 matches the outer diameter of the shock-absorbing sleeve to be pressed. By extending or shortening the cylinder rod of the pressing cylinder 6, the floating plate 5 can be moved downward or upward, and the pressing head 7 can be moved downward or upward. The two sides of the machine body 1 are also equipped with induction switches 4. The induction switches 4 are used to detect whether the operator's arm has been extended under the floating plate 5. The induction switches 4 are electrically connected to the external control cabinet. The induction switches 4 can detect whether the operator's arm has accidentally entered the dangerous area under the floating plate 5, so as to realize error prevention and safety protection.

[0026] Combination Figures 1 to 8 As shown, and please refer to the following: Figure 3A boss 10 is fixedly connected to the body 1. Several positioning pins 9 are provided on the top of the boss 10. These positioning pins 9 are used to cooperate with the positioning holes on the external steering gear to perform lateral positioning of the steering gear and to ensure that the shock absorber fitting hole on the steering gear is coaxial with the press head 7, thus ensuring the consistency of press fitting accuracy from the source. A cylinder support 2 is also installed on the body 1 by screws. A positioning cylinder 3 is horizontally installed on the upper end of the cylinder support 2. The cylinder rod of the positioning cylinder 3 extends and retracts towards the boss 10, and a fixing part 20 is fixedly connected to the end of the cylinder rod of the positioning cylinder 3. The fixing part 20 is driven to move horizontally by the extension and retraction of the cylinder rod of the positioning cylinder 3, so that the fixing part 20 can move closer to or away from the boss 10.

[0027] Combination Figures 1 to 8 As shown, and please refer to the following: Figures 3 to 6 Two sliding posts 19 are vertically inserted through one end of the fixed part 20 facing the boss 10. The sliding posts 19 can slide freely up and down on the fixed part 20. The upper end of the sliding post 19 is threaded with a stop nut 18. The lower ends of the two sliding posts 19 are fixedly connected to a positioning plate 11. The positioning plate 11 slides on the fixed part 20 through the sliding posts 19, so that the positioning plate 11 can move up and down relative to the fixed part 20. A spring 17 is wound around the periphery of the sliding post 19. The two ends of the spring 17 elastically abut against the fixed part 20 and the end face of the stop nut 18 respectively. Under normal conditions, the spring 17 has an upward elastic abutting force on the stop nut 18, so that the stop nut 18 can drive the sliding post 19 to move upward, and then drive the positioning plate 11 to move upward. In the initial stage of pressing, the floating plate 5 first contacts the shock-absorbing sleeve, and only as it continues to move downward does it squeeze the sliding post 19 to overcome the resistance of the spring 17 and move downward. The movement allows for flexible pressing and correction of the shock absorber sleeve, avoiding damage from rigid impacts. After pressing, the floating plate 5 moves upward, and the elastic restoring force of the spring 17 automatically pushes the positioning plate and sliding column upward to reset, preparing for the next pressing. The action is continuous and reliable. Two sliding sleeves 25 are fixedly embedded on the fixed part 20. The two sliding sleeves 25 are respectively fitted onto the two sliding columns 19 and form a sliding fit with the periphery of the sliding column 19. By setting the sliding sleeves 25, the sliding column 19 will not generate large mechanical wear when sliding on the fixed part 20. In addition, when the floating plate 5 moves downward so that the pressing head 7 starts pressing, the floating plate 5 will gradually approach the upper end of the sliding column 19 and generate a downward squeezing force on the upper end of the sliding column 19, thereby enabling the sliding column 19 to move downward and drive the positioning plate 11 to move downward. The positioning plate 11 will move downward relative to the fixed part 20.

[0028] Combination Figures 1 to 8 As shown, and please refer to the following: Figures 3 to 8The positioning plate 11 has a through-hole mounting hole at one end facing the boss 10. A positioning sleeve 16 is installed in the mounting hole and is rotatably connected to the mounting hole. The positioning sleeve 16 has a through-hole clearance hole, and multiple positioning balls 15 are rotatably embedded in the wall of the clearance hole. The multiple positioning balls 15 are arranged in an array along the axial direction of the positioning sleeve 16, and the multiple positioning balls 15 form a clamping space for the shock absorber sleeve to pass freely. The inner diameter of the clamping space is not less than the outer diameter of the shock absorber sleeve, so that the shock absorber sleeve will not generate friction when it contacts the positioning balls 15. A first gear part 14 is coaxially fixed to the upper end of the positioning sleeve 16. The first gear part 14 and the positioning... The sleeve 16 is coaxial. When the first gear part 14 rotates, it will synchronously drive the positioning sleeve 16 to rotate. The driving column 22 is vertically fixed on the fixing part 20. The lower end of the driving column 22 penetrates the positioning plate 11, and the positioning plate 11 has a through hole 24 for the driving column 22 to pass freely. By setting the positioning sleeve 16 with positioning balls 15, pre-guidance is provided when the shock absorber sleeve is inserted. During the pressing and lowering process, the positioning sleeve 16 moves down synchronously with the positioning plate 11, and the positioning balls 15 roll down along the periphery of the shock absorber sleeve to achieve dynamic correction of the axial direction of the shock absorber sleeve. At the same time, the positioning sleeve 16 is driven to rotate, and the positioning balls 15 roll along the circumference of the shock absorber sleeve to achieve rotational correction of the circumference of the shock absorber sleeve. The combination of the two can effectively eliminate the tilt and offset of the shock absorber sleeve, avoid problems such as incomplete pressing, poor coaxiality and hole wall scratches, and significantly improve the assembly quality. In addition, the positioning ball 15 and the shock absorber sleeve are in rolling contact during the process, and the inner diameter of the clamping space is not less than the outer diameter of the shock absorber sleeve. This ensures the correction force and avoids the violent sliding friction between the positioning sleeve and the shock absorber sleeve, effectively preventing scratches or scratches on the surface of the shock absorber sleeve.

[0029] A rotating sleeve 26 is rotatably connected within the perforation 24 via a bearing. The rotating sleeve 26 can rotate freely within the perforation 24. Furthermore, the central hole of the rotating sleeve 26 is in relative sliding engagement with the drive post 22, which freely extends through the central hole of the rotating sleeve 26. A rolling part 27 is rotatably embedded in the wall of the central hole of the rotating sleeve 26. A spiral rolling groove 21 is formed on the periphery of the drive post 22 for engaging the rolling part 27. The rolling part 27 can roll freely within the spiral rolling groove 21. When the drive post 22 moves relative to the rotating sleeve 26, the rolling part 27 will roll within the spiral rolling groove 21, and... The rotating sleeve 26 can rotate circumferentially by the squeezing force of the inner wall of the spiral rolling groove 21 on the rolling part 27. The upper end of the rotating sleeve 26 is coaxially fixed with the second gear part 23, which is meshed with the first gear part 14. When the rotating sleeve 26 rotates, the first gear part 14 and the second gear part 23 mesh and drive each other, thereby driving the positioning sleeve 16 to rotate. The downward movement of the sliding column 19, the elastic element, the positioning plate 11, and the rotation of the rotation correction mechanism in the correction unit do not require an additional independent power source (such as a rotary motor or a pressing cylinder). Its power comes entirely from the downward movement of the floating plate 5 driven by the pressing cylinder 6: the downward movement of the floating plate 5 squeezes the sliding column 19 to achieve downward correction; the sliding column 19 drives the positioning plate 11 to move downward, causing the fixed driving column 22 to be displaced relative to the rotating sleeve. The linear motion is converted into rotational motion through the cooperation of the spiral rolling groove 21 and the rolling part 27, and then the positioning sleeve is rotated through gear meshing to achieve rotational correction. This mechanical linkage design greatly simplifies the equipment structure and reduces manufacturing costs and control difficulty.

[0030] Working principle of the invention: The positioning cylinder 3 is activated, and the cylinder rod of the positioning cylinder 3 extends, thereby driving the fixing part 20 and the positioning plate 11 to move towards the boss 10, so that the positioning plate 11 is above the boss 10, and the positioning sleeve 16 and the pressing head 7 are coaxial. Then the shock-absorbing sleeve is vertically placed into the positioning sleeve 16, and the pressing cylinder 6 is activated again, and the cylinder rod of the pressing cylinder 6 extends, thereby driving the floating plate 5 to move downward, thereby causing the floating plate 5 to move downward. As the floating plate 5 moves downwards, it causes the pressing head 7 to move downwards and begin to contact the upper end face of the shock absorber sleeve. As the pressing head 7 moves downwards, the lower end face of the fixed plate 13 contacts the upper end face of the sliding column 19, generating a downward pressing force on the sliding column 19. This causes the sliding column 19 to drive the positioning plate 11 downwards, thus causing the positioning balls 15 to move downwards around the periphery of the shock absorber sleeve. This allows the positioning balls 15 to correct the axial direction of the shock absorber sleeve. When the positioning plate 11 moves downwards relative to the fixed part 20, it will cause... The drive column 22 moves relative to the rotating sleeve 26, thereby allowing the rolling part 27 to roll within the spiral rolling groove 21, which in turn drives the rotating sleeve 26 to rotate. When the rotating sleeve 26 rotates, the second gear part 23 and the first gear part 14 mesh and drive each other, thereby driving the positioning sleeve 16 to rotate. This allows the positioning ball 15 to correct the circumferential direction of the shock absorber sleeve, thus enabling the shock absorber sleeve to be positioned correctly through the movement and rotation of the positioning sleeve 16, thereby reducing the tilting phenomenon of the shock absorber sleeve.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A steering gear shock absorber sleeve anti-misalignment pressing device, characterized in that, include: Body (1); The pressing assembly includes a guide post (8), a mounting plate (12), a pressing cylinder (6), a floating plate (5), and a pressing head (7). The guide post (8) is vertically mounted on the machine body (1). The mounting plate (12) is fixed to the upper end of the guide post (8). The pressing cylinder (6) is vertically mounted on the mounting plate (12). The floating plate (5) is slidably fitted on the guide post (8) and located below the mounting plate (12). The cylinder rod of the pressing cylinder (6) penetrates the mounting plate (12) and is connected to the floating plate (5). The pressing head (7) is coaxially connected to the lower part of the floating plate (5). The positioning assembly includes a boss (10), a positioning cylinder (3), a fixing part (20), and a correction unit. The boss (10) is disposed on the body (1). The positioning cylinder (3) is horizontally disposed. The fixing part (20) is connected to the cylinder rod of the positioning cylinder (3) and is driven by it to move closer to or away from the boss (10). The correction unit is installed on the fixing part (20) and can be pressed down relative to the fixing part (20) and rotate when the floating plate (5) moves down, so as to perform axial and circumferential position correction on the shock absorber sleeve.

2. The steering gear shock absorber sleeve anti-misalignment pressing device according to claim 1, characterized in that, The correction unit includes a sliding column (19), an elastic element, a positioning plate (11), and a rotation correction mechanism. The sliding column (19) is vertically inserted into the fixed part (20) and can slide freely up and down. The positioning plate (11) is fixedly connected to the lower end of the sliding column (19). The elastic element abuts against the fixed part (20) and the sliding column (19) and makes the positioning plate (11) maintain an upward trend under normal conditions. The rotation correction mechanism is installed on the positioning plate (11). The floating plate (5) moves down and can press against the upper end of the sliding column (19) to make the positioning plate (11) move down, and trigger the rotation correction mechanism to rotate during the downward movement.

3. The steering gear shock absorber sleeve anti-misalignment pressing device according to claim 2, characterized in that, The rotation correction mechanism includes a positioning sleeve (16), a first gear part (14), a drive column (22), a rotating sleeve (26), and a second gear part (23). The positioning plate (11) has a mounting hole at one end facing the boss (10). The positioning sleeve (16) is rotatably connected to the mounting hole. The positioning sleeve (16) has a clearance hole for the shock-absorbing sleeve to pass through. The first gear part (14) is coaxially fixed to the upper end of the positioning sleeve (16). The drive column (22) is vertically fixed through the fixing part (20). The positioning plate (11) has a clearance hole for the drive column (23) to pass through. 22) Through the through hole (24), the rotating sleeve (26) is rotatably connected to the through hole (24) and slidably fitted onto the drive column (22). A helical transmission pair is provided between the drive column (22) and the rotating sleeve (26). The second gear part (23) is coaxially fixed to the rotating sleeve (26) and meshes with the first gear part (14). When the positioning plate (11) moves down, the drive column (22) moves relative to the rotating sleeve (26) and drives the rotating sleeve (26) to rotate through the helical transmission pair, so as to drive the positioning sleeve (16) to rotate through gear transmission.

4. The steering gear shock absorber sleeve anti-misalignment pressing device according to claim 3, characterized in that, The helical drive pair includes a helical rolling groove (21) and a rolling part (27). The helical rolling groove (21) is opened on the periphery of the drive column (22). The rolling part (27) is rotatably embedded in the central hole wall of the rotating sleeve (26) and engaged in the helical rolling groove (21). When the drive column (22) moves relative to the rotating sleeve (26), the rolling part (27) rolls along the helical rolling groove (21) and squeezes the inner wall to drive the rotating sleeve (26) to rotate.

5. The steering gear shock absorber sleeve anti-misalignment pressing device according to claim 3, characterized in that, Multiple positioning balls (15) are rotatably embedded in the wall of the clearance hole. The multiple positioning balls (15) are arranged in an array along the axial direction of the positioning sleeve (16). The multiple positioning balls (15) form a clamping space for the shock-absorbing sleeve to pass through. The inner diameter of the clamping space is not less than the outer diameter of the shock-absorbing sleeve.

6. The steering gear shock absorber sleeve anti-misalignment pressing device according to claim 2, characterized in that, The upper end of the sliding column (19) is threaded with a stop nut (18), and the elastic element is a spring (17). The spring (17) is wrapped around the periphery of the sliding column (19), and the two ends of the spring (17) elastically abut against the end faces of the fixing part (20) and the stop nut (18), respectively.

7. A steering gear shock absorber sleeve anti-misalignment pressing device according to claim 2, characterized in that, A sliding sleeve (25) is fixedly embedded in the fixed part (20), and the sliding column (19) passes through the sliding sleeve (25) and forms a sliding fit with the sliding sleeve (25).

8. The steering gear shock absorber sleeve anti-misalignment pressing device according to claim 1, characterized in that, The pressing assembly also includes a fixed plate (13), which is coaxially connected to the bottom of the floating plate (5). The pressing head (7) is coaxially connected to the bottom of the fixed plate (13). The bottom surface of the fixed plate (13) can press against the top of the correction unit. The outer diameter of the pressing head (7) matches the outer diameter of the shock absorber sleeve.

9. A steering gear shock absorber sleeve anti-misalignment pressing device according to claim 1, characterized in that, The top of the boss (10) is provided with several positioning pins (9) that cooperate with the positioning holes of the steering gear, and the two sides of the body (1) are also provided with induction switches (4) for detecting human arms.

10. A method for anti-misalignment pressing of a steering gear shock absorber sleeve, using the anti-misalignment pressing equipment for steering gear shock absorber sleeves as described in any one of claims 1-9, characterized in that, Includes the following steps: S1: Place the steering gear on the body (1), and position the steering gear through the boss (10) so that the shock absorber fitting hole on the steering gear is coaxial with the press head (7); S2: Start the positioning cylinder (3), drive the fixing part (20) and the correction unit to move above the boss (10), make the correction unit coaxial with the pressing head (7), and put the shock-absorbing sleeve vertically into the correction unit; S3: Start the press cylinder (6), drive the floating plate (5) and press head (7) to move down, press head (7) contacts the upper end face of the shock absorber and start press fitting; S4: When the floating plate (5) continues to move down, it presses against the correction unit. The correction unit is pressed and moves down relative to the fixed part (20) to correct the axial direction of the damping sleeve. At the same time, the correction unit rotates through the screw drive and gear drive during the downward movement to correct the circumferential direction of the damping sleeve and eliminate the tilting phenomenon of the damping sleeve. S5: Press cylinder (6) continues to extend, and after the shock absorber sleeve is corrected, it is smoothly pressed into the assembly hole of the steering gear. After completion, press cylinder (6) and positioning cylinder (3) are reset.

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