A truck gearbox gear shaft centering assembly tool

Abstract

The application discloses a truck gearbox gear shaft centering assembly tool in the technical field of automobile accessory assembly, and aims to solve the problems that the traditional assembly method is difficult to guarantee the accurate centering of the input shaft and the butt joint shaft and lacks effective detection means; the tool comprises a base, the top of the base is provided with an assembly mechanism and a detection mechanism; a first lifting assembly of the assembly mechanism can adjust the height of a butt joint assembly, the butt joint assembly can stably clamp the input shaft and the butt joint shaft; a second lifting assembly of the detection mechanism can adjust the position of a test assembly, the test assembly can detect the concentricity of the input shaft and the butt joint shaft; the tool further comprises a handle rod facilitating carrying, and the height adjustment of the lifting assembly is realized through a rack and other structures; the tool can accurately adjust butt joint, realize close and stable butt joint, effectively detect the shafting concentricity, and meet the production requirements of modern truck gearboxes.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile accessory assembly, in particular to a truck gearbox gear shaft centering assembly tool. BACKGROUND

[0002] In the manufacturing and assembly process of truck gearboxes, the accurate centering assembly of the gearbox body and the external butt shaft is a key link to ensure the performance and reliability of the gearbox. The gearbox body usually has an input shaft and an output shaft, and the output shaft is connected to the butt shaft through a coupling. The traditional assembly method mainly relies on manual operation, and the assembly personnel need to adjust the positions of the input shaft, the coupling and the butt shaft according to experience and visual observation, so that they are roughly on the same axis, and then connected and fixed.

[0003] However, this traditional assembly method has many drawbacks. On the one hand, manual operation cannot guarantee the accurate centering of the input shaft and the butt shaft, which may cause positional deviation of the shafting after assembly. This deviation may cause a series of problems during the operation of the gearbox, such as increased wear of the shafting, vibration and noise, reduced transmission efficiency, etc., and in severe cases, it may even cause the shafting to break, affecting the normal operation and driving safety of the truck. On the other hand, the traditional assembly method lacks effective detection means, and it is difficult to find the centering error of the shafting in time and accurately after assembly, and the problem is often found when the gearbox is repaired after failure, which not only increases the repair cost and time, but also may cause secondary damage to other parts.

[0004] With the popularization of intelligent manufacturing, service consumption robots such as industrial robots and special operation robots have been widely used in welding, spraying, handling and other links, but in the assembly of gearbox assembly which requires high precision and strong adaptability, automation application still faces challenges. At the same time, the progress of additive manufacturing equipment manufacturing technology provides new possibilities for the production of complex, lightweight and customized tooling fixtures, greatly reducing the cost of developing high-performance special assembly tools.

[0005] With the continuous development of the automobile industry, the performance and quality requirements of truck gearboxes are becoming higher and higher, and the traditional assembly method has been unable to meet the needs of modern production. Therefore, it is of great practical significance to develop an assembly tool that can realize the accurate centering assembly of the truck gearbox gear shaft and effectively detect the concentricity of the shafting after assembly. This is also a powerful expansion of the application field of existing industrial robots and a concrete manifestation of the development of high-end equipment manufacturing.

[0006] In view of the above problems, the present application file proposes a truck gearbox gear shaft centering assembly tool. SUMMARY

[0007] In view of the problems existing in the prior art, the truck gearbox gear shaft centering assembly tool is provided to solve the problems that the traditional assembly method cannot guarantee the accurate centering of the input shaft and the butt joint shaft and lacks effective detection means.

[0008] The purpose of the present application is achieved in that a truck gearbox gear shaft centering assembly tool is used for assembling and debugging the gearbox body and the butt joint shaft, wherein the gearbox body is respectively provided with an input shaft and an output shaft, the output shaft is connected with the butt joint shaft through a shaft coupling, and the tool comprises a base, an assembly mechanism and a detection mechanism are arranged on the top of the base, the assembly mechanism comprises:

[0009] A first lifting assembly is arranged on the top of the base, a butt joint assembly is connected to the first lifting assembly, and the first assembly is used for supporting and positioning the input shaft and the butt joint shaft when the input shaft, the shaft coupling and the butt joint shaft are connected, so that the input shaft and the butt joint shaft are on the same axis;

[0010] The detection mechanism comprises:

[0011] A second lifting assembly is arranged on the top of the base, a test assembly is connected to the second lifting assembly, and the test assembly is used for detecting the concentricity of the input shaft and the butt joint shaft after the input shaft, the shaft coupling and the butt joint shaft are connected, so as to ensure that the input shaft and the butt joint shaft will not deviate after being connected.

[0012] In a possible design, the first lifting assembly comprises two first limiting frames symmetrically and fixedly installed on one side of the top of the base, a same first moving plate is slidably connected to the two first limiting frames, a same first supporting plate is fixedly installed on the top of the two first limiting frames, a first moving frame is slidably connected in the first limiting frame, the bottom of the first moving frame is fixedly connected with the top of the first moving plate, the top of the first moving frame penetrates through the first supporting plate and extends above the first supporting plate, a same supporting member is connected to the top of the two first moving frames, and the supporting member is connected with the butt joint assembly and used for supporting and limiting the butt joint assembly.

[0013] In a possible design, the supporting member comprises a connecting rod and a mounting rod, the connecting rod and the mounting rod are fixedly installed on the top of the two first moving frames, a supporting rod and a first guide rod are fixedly installed on one side of the connecting rod, one end of the supporting rod and one end of the first guide rod are fixedly connected with one side of the mounting rod, a same adjusting rod is slidably sleeved on the supporting rod and the first guide rod, and the butt joint assembly is connected with the mounting rod and the adjusting rod.

[0014] In one possible design, the same support plate is slidably sleeved on the support rod and the first guide rod. A rotating groove is opened on one side of the support plate, and a rotating plate is rotatably connected in the rotating groove. One side of the rotating plate extends to the outside of the support plate and is fixedly installed with a bracket. A drive shaft is rotatably connected to the central area of ​​the bracket.

[0015] A first positioning screw is threaded onto the tray. A groove is provided at the top of the first guide rod. The bottom end of the first positioning screw extends into the groove and is clamped to the inner wall of the groove. An mounting plate is fixedly installed on one side of the top of the tray. A plug rod is slidably connected through the mounting plate. A slot is provided on the side of the bracket near the plug rod. One end of the plug rod extends into the slot and is clamped to the inner wall of the slot. A first tension spring is sleeved on the plug rod. The two ends of the first tension spring are respectively fixedly connected to one side of the mounting plate and the other end of the plug rod through hooks provided at the two ends of the first tension spring.

[0016] In one possible design, the docking assembly includes two first clamps, which are respectively fixedly mounted on the mounting rod and the adjusting rod. The two first clamps are located on both sides of the coupling. A second clamp is rotatably connected to the first clamp. The first and second clamps on both sides are used to clamp and position the input shaft and the docking shaft, so that when the input shaft, coupling, and docking shaft are connected, the input shaft and the docking shaft can be kept at the same horizontal height. A common adjusting member is connected to one side of the two second clamps. The adjusting member is used to adjust the distance between the two second clamps. A fixing bolt is rotatably connected to the first clamp. A fixing nut is threaded on the fixing bolt. The fixing nut is located on the side of the second clamp away from the first clamp and is clamped to the second clamp.

[0017] In one possible design, the adjusting component includes a connecting pipe and an adjusting screw, which are respectively fixedly installed on one side of the two second clamps. One end of the connecting pipe is rotatably connected to an adjusting nut, and the adjusting screw passes through the adjusting nut and is threadedly connected to the adjusting nut.

[0018] In one possible design, the second lifting assembly includes two second limiting frames symmetrically fixedly mounted on the other side of the top of the base. The top of the two second limiting frames is symmetrically fixedly mounted with the same second support plate. The same second movable plate is slidably connected to the two second limiting frames. A second movable frame is slidably connected inside the second limiting frames. The bottom of the second movable frame is fixedly connected to the top of the second movable plate. The top of the second movable frame passes through the second support plate and extends above the second support plate. The top of the two second support plates is fixedly mounted with the same support slide rail. A movable slide plate is slidably connected to the support slide rail. The test assembly is mounted on the movable slide plate.

[0019] In one possible design, the test assembly includes two supporting slide rods symmetrically fixedly mounted on the top of the movable slide plate, and two fixing plates located on opposite sides of the supporting slide rods. Each fixing plate is fixedly connected to one end of a corresponding supporting slide rod. A bidirectional screw is rotatably connected to both fixing plates, and the bidirectional screw has two oppositely oriented threaded grooves. Two threaded plates are slidably connected to the two supporting slide rods. The bidirectional screw passes through both threaded plates, and each threaded plate is threadedly connected to its corresponding threaded groove. A support guide is fixedly mounted on the top of the threaded plates. A scale rod is slidably connected inside the support guide. One end of the scale rod extends to the outside of the support guide and is fitted with a detection stop wheel. A limit rod is also fixedly mounted on the support guide, and a limit plate is slidably connected to the limit rod. The bottom of the limit plate extends into the support guide and is fixedly connected to one side of the top of the scale rod. A third tension spring is also fitted onto the limit rod, and both ends of the third tension spring are fixedly connected to one end of the limit rod and one side of the limit plate via hooks located at both ends of the third tension spring.

[0020] In one possible design, a positioning rod is slidably connected through one side of the inner wall of the support guide. A positioning groove is provided on one side of the scale rod. One end of the positioning rod extends into the positioning groove and is engaged with the inner wall of the positioning groove so that the scale rod can be positioned after it is stored in the support guide. A second tension spring located on the outside of the support guide is sleeved on the positioning rod. The two ends of the second tension spring are respectively fixedly connected to the other end of the positioning rod and one side of the support guide by hooks provided at both ends of the second tension spring.

[0021] In one possible design, a connecting frame is fixedly installed on one side of the movable slide plate. The bottom of the connecting frame extends to the bottom of the support slide rail. A limiting slide rail is fixedly installed at the bottom of the support slide rail. One side of the bottom of the connecting frame extends into the limiting slide rail and slides in slidably connected to the inner wall of the limiting slide rail. A second positioning screw located below the support slide rail is threaded through the connecting frame. The second positioning screw is in close contact with the bottom of the support slide rail.

[0022] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit the invention.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, by setting the first lifting component, the two first moving frames can be moved longitudinally by moving the first moving plate longitudinally, and the height of the docking component can be adjusted by the supporting component, so as to conveniently adjust the height of the docking component to a position that matches the height of the input shaft, thereby facilitating horizontal support for the input shaft and the docking shaft.

[0024] In this invention, by setting up a docking assembly, after the coupling is fitted onto the input shaft and the docking shaft is inserted into the coupling, the two second clamps are flipped upwards, which, with the support of the corresponding first clamps, can clamp the input shaft and the docking shaft respectively. Then, by rotating the fixing bolt, the fixing nut is moved to one side of the second clamp. By rotating the fixing nut, it is moved closer to the second clamp on the fixing bolt until the second clamp is positioned by the fixing nut. Thus, the first clamp and the second clamp can be stably engaged together, which can stably clamp and limit the input shaft or the docking shaft.

[0025] In this invention, the second lifting component can be used to move the test component to the same height as the input shaft and the docking shaft by moving the second moving plate longitudinally, and the lateral position of the test component can be adjusted by moving the moving slide laterally. In this way, the concentricity of the input shaft and the docking shaft can be detected after the input shaft and the docking shaft are assembled.

[0026] In this invention, the test assembly allows the two threaded plates to move towards each other (i.e., move closer or further apart) through the threaded transmission of the bidirectional screw. This allows adjustment of the distance between the two detection rollers, ensuring their positions correspond to the input shaft and the docking shaft, respectively. A support guide provides horizontal sliding support for the scale rod. After assembling the input shaft, coupling, and docking shaft, releasing the scale rod allows the third tension spring, under stress, to pull the limiting plate, moving the scale rod outwards towards the support guide. This brings the detection rollers into contact with the side of the input shaft or docking shaft. When the docking shaft drives the input shaft to rotate simultaneously, the two detection rollers roll along the outer surface of the input or docking shaft. If the axis of the input or docking shaft shifts, the corresponding detection roller drives the scale rod to move. The scale rod, with its graduated lines, detects the shift in the input or docking shaft.

[0027] This assembly fixture can precisely adjust the docking components to achieve a tight and stable connection between the input shaft, coupling, and docking shaft, avoiding positional deviations caused by manual assembly. It can also effectively detect shaft concentricity through testing components, promptly identify alignment errors, reduce maintenance costs and time, and meet the assembly precision and testing requirements of modern truck gearbox production. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1 This is a three-dimensional schematic diagram of the gearbox, coupling, and mating shaft separation structure of the truck gearbox gear shaft alignment assembly tooling provided in an embodiment of the present invention.

[0030] Figure 2 This is a three-dimensional schematic diagram of the alignment tooling for assembling the gearbox, coupling, and mating shaft provided in the embodiment of the present invention.

[0031] Figure 3 This is a first-view three-dimensional structural schematic diagram of the truck gearbox gear shaft alignment assembly tooling provided in an embodiment of the present invention.

[0032] Figure 4 This is a two-dimensional structural schematic diagram of the truck gearbox gear shaft alignment assembly tooling provided in an embodiment of the present invention.

[0033] Figure 5 This is a three-dimensional structural schematic diagram of the assembly mechanism of the truck gearbox gear shaft alignment assembly fixture provided in an embodiment of the present invention.

[0034] Figure 6 This is a three-dimensional schematic diagram of the connection structure of the pallet and bracket of the truck gearbox gear shaft alignment assembly tooling provided in an embodiment of the present invention.

[0035] Figure 7 This is a three-dimensional schematic diagram of the detection mechanism for the truck gearbox gear shaft alignment assembly tooling provided in an embodiment of the present invention.

[0036] Figure 8 This is a three-dimensional schematic diagram of the connecting structure of the movable slide plate and two support guides of the truck gearbox gear shaft alignment assembly tooling provided in an embodiment of the present invention.

[0037] Figure 9 The diagram below shows a three-dimensional view of the connection structure of the two enclosed boxes, conduits, two moving screws, and two support guides of the truck gearbox gear shaft alignment assembly tooling provided in an embodiment of the present invention.

[0038] Figure 10 This is a three-dimensional schematic diagram of the connection structure of two enclosed boxes, conduits and two moving screws of the truck gearbox gear shaft alignment assembly tooling provided in an embodiment of the present invention.

[0039] Figure label:

[0040] 1. Gearbox body; 2. Input shaft; 3. Output shaft; 4. Coupling; 5. Connecting shaft; 6. Base; 7. First limit bracket; 8. First moving plate; 9. First support plate; 10. First moving frame; 11. Connecting rod; 12. Mounting rod; 13. Support rod; 14. First guide rod; 15. Adjusting rod; 16. First clamp; 17. Second clamp; 18. Fixing bolt; 19. Fixing nut; 20. Connecting pipe; 21. Adjusting nut; 22. Adjusting screw; 23. Support plate; 24. Rotating plate; 25. Bracket; 26. Drive shaft; 27. First positioning screw; 28. Mounting plate; 29. ​​Insert rod; 30. First tension spring; 31. Second... 31. Limiting bracket; 32. Second support plate; 33. Second moving plate; 34. Second moving frame; 35. Support slide rail; 36. Moving slide plate; 37. Supporting slide rod; 38. Fixed plate; 39. Bidirectional screw; 40. Threaded plate; 41. Support guide frame; 42. Scale rod; 43. Detection stop wheel; 44. Positioning rod; 45. Second tension spring; 46. Limiting rod; 47. Third tension spring; 48. Connecting frame; 49. Second positioning screw; 50. Handle rod; 51. Moving screw; 52. Enclosed box; 53. Conduit; 54. Rack; 55. Collar frame; 56. Second guide rod; 57. Threaded ring; 58. Transmission gear; 59. Third positioning screw. Detailed Implementation

[0041] 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.

[0042] Example 1: Refer to Figures 1-10 An assembly fixture includes components for assembling and adjusting a gearbox body 1 and a mating shaft 5. An input shaft 2 and an output shaft 3 are respectively mounted on the gearbox body 1, and the output shaft 3 is connected to the mating shaft 5 via a coupling 4. The fixture is based on a base 6, with an assembly mechanism and a testing mechanism respectively mounted on the top of the base 6.

[0043] like Figure 5As shown, the first lifting assembly of the assembly mechanism is installed on one side of the top of the base 6, and consists of two symmetrically fixed first limiting frames 7. The two first limiting frames 7 are slidably connected to the same first moving plate 8, and the top of the two first limiting frames 7 is fixedly installed with the same first support plate 9. The first moving frame 10 is slidably connected inside the first limiting frame 7, and its bottom is fixedly connected to the top of the first moving plate 8. Its top passes through the first support plate 9 and extends upward. The top of the two first moving frames 10 is connected to the same supporting component, which includes a connecting rod 11 and a mounting rod 12, which are fixedly fixed to the top of the two first moving frames 10 respectively. A support rod 13 and a first guide rod 14 are fixedly installed on one side of the connecting rod 11. One end of both is fixedly connected to one side of the mounting rod 12, and the same adjusting rod 15 is slidably fitted on them. The docking assembly is connected to the mounting rod 12 and the adjusting rod 15 respectively. The docking assembly consists of two first clamps 16, which are fixed on the mounting rod 12 and the adjusting rod 15 respectively and are located on both sides of the coupling 4. The first clamp 16 is rotatably connected to the second clamp 17. The first clamp 16 and the second clamp 17 on both sides are used to clamp and position the input shaft 2 and the docking shaft 5. An adjusting component is connected to one side of each of the two second clamps 17. The connecting pipe 20 and the adjusting screw 22 of the adjusting component are respectively fixed to one side of each of the two second clamps 17. One end of the connecting pipe 20 is rotatably connected to the adjusting nut 21. The adjusting screw 22 passes through the adjusting nut 21 and is threadedly connected to it. A fixing bolt 18 is rotatably connected to the first clamp 16. A fixing nut 19 is threaded onto the first clamp 16. The fixing nut 19 is located on the side of the second clamp 17 away from the first clamp 16 and is clamped to the second clamp 17.

[0044] like Figure 6 As shown, the same support plate 23 is slidably fitted onto the support rod 13 and the first guide rod 14. A rotating groove is formed on one side of the support plate 23, and a rotating plate 24 is rotatably connected in the rotating groove. One side of the rotating plate 24 extends to the outside of the support plate 23 and is fixedly installed on the bracket 25. The central area of ​​the bracket 25 is rotatably connected to the drive shaft 26. A first positioning screw 27 is threaded onto the support plate 23. A groove is provided at the top of the first guide rod 14, and the bottom end of the first positioning screw 27 extends into the groove and is clamped to the inner wall of the groove. An mounting plate 28 is fixedly installed on one side of the top of the support plate 23. A sliding connecting rod 29 passes through the mounting plate 28. A slot is formed on the side of the bracket 25 near the rod 29. One end of the rod 29 extends into the slot and is clamped to the inner wall of the slot. A first tension spring 30 is fitted onto the rod 29, and its two ends are fixedly connected to one side of the mounting plate 28 and the other end of the rod 29 respectively by hooks.

[0045] like Figure 7As shown, the second lifting assembly of the testing mechanism is installed on the other side of the top of the base 6, and consists of two symmetrically fixedly installed second limiting frames 31. The top of the two second limiting frames 31 is symmetrically fixedly installed with the same second support plate 32. The two second limiting frames 31 are slidably connected to the same second moving plate 33. The second moving frame 34 is slidably connected inside the second limiting frame 31, and its bottom is fixedly connected to the top of the second moving plate 33. Its top passes through the second support plate 32 and extends upward. The top of the two second support plates 32 is fixedly installed with the same support slide rail 35. The moving slide plate 36 is slidably connected to the support slide rail 35. The testing assembly is installed on the moving slide plate 36. The testing assembly includes two supporting slide rods 37 symmetrically fixedly installed on the top of the moving slide plate 36, and two fixing plates 38 located on both sides of the supporting slide rods 37. The fixing plates 38 are respectively fixedly connected to one end of the two supporting slide rods 37. Two fixed plates 38 are rotatably connected to the same bidirectional screw 39, which has two threaded grooves in opposite directions. Two supporting slide rods 37 are slidably connected to the same threaded plate 40, and there are two of them. The bidirectional screw 39 passes through the two threaded plates 40 respectively, and the two threaded plates 40 are threadedly connected to the corresponding threaded grooves. A support guide 41 is fixedly installed on the top of the threaded plate 40. A scale rod 42 is slidably connected inside the support guide 41, and one end of the scale rod 42 extends to the outside of the support guide 41 and is equipped with a detection stop wheel 43. A limit rod 46 is fixedly installed on the support guide 41, and a limit plate is slidably connected to it. The bottom of the limit plate extends into the support guide 41 and is fixedly connected to the top side of the scale rod 42. A third tension spring 47 is sleeved on the limit rod 46, and its two ends are fixedly connected to one end of the limit rod 46 and one side of the limit plate respectively through hooks. A slidable positioning rod 44 is connected through one side of the inner wall of the support guide 41. A positioning groove is opened on one side of the scale rod 42. One end of the positioning rod 44 extends into the positioning groove and is engaged with the inner wall of the positioning groove. A second tension spring 45 located on the outside of the support guide 41 is sleeved on the positioning rod 44. Its two ends are respectively fixedly connected to the other end of the positioning rod 44 and one side of the support guide 41 by pull hooks. A connecting frame 48 is fixedly installed on one side of the movable slide plate 36. Its bottom extends to the bottom of the support slide rail 35. A limiting slide rail is fixedly installed at the bottom of the support slide rail 35. One side of the bottom of the connecting frame 48 extends into the limiting slide rail and is slidably connected to the inner wall of the limiting slide rail. A second positioning screw 49 located below the support slide rail 35 is threaded through the connecting frame 48 and is in close contact with the bottom of the support slide rail 35.

[0046] This application can be used in the field of automotive parts assembly technology, or in other fields applicable to this application.

[0047] Example 2: Reference Figures 3-4An improvement on Embodiment 1: A truck gearbox gear shaft alignment assembly fixture, applied to the field of automotive parts assembly technology, further includes two handle rods 50, the ends of which are fixedly connected to the first limiting frame 7 and the second limiting frame 31 respectively on opposite sides. Two enclosed boxes 52 are symmetrically fixedly installed on the top of the first support plate 9 and the top of the second support plate 32. A threaded ring 57 is rotatably connected inside the enclosed box 52, and a movable screw 51 is internally threaded onto it. The top of the movable screw 51 extends above the enclosed box 52, and the bottom ends of the two movable screws 51 on both sides pass through the first support plate 9 and the second support plate 32 respectively, and are fixedly connected to the top of the first movable plate 8 and the top of the second movable plate 33. Two enclosed boxes 52 located on the same side are fixedly connected to the same conduit 53. A rack 54 is slidably connected inside the conduit 53, with its two ends passing through the corresponding two enclosed boxes 52. A transmission gear 58 is fixedly sleeved on the threaded ring 57. The rack 54 meshes with the two transmission gears 58 respectively. A collar frame 55 is fixedly installed at one end of the rack 54. A second guide rod 56 is fixedly installed on the side away from the first support plate 9 and the second support plate 32. It passes through the corresponding collar frame 55 and is slidably connected to the inner wall of the collar frame 55. A third positioning screw 59 is threaded through the inner wall of one side of the collar frame 55 and clamped with the corresponding second guide rod 56.

[0048] Working principle: When assembling the input shaft 2 and the docking shaft 5, first place the gearbox body 1 in a suitable position so that the input shaft 2 and output shaft 3 are in an easy-to-operate state. Prepare the docking shaft 5 for connection. By operating the first lifting component, push the first moving plate 8 to move longitudinally, driving the two first moving frames 10 to move longitudinally. Adjust the docking component to a position that matches the height of the input shaft 2 through the supporting component. Use the support rod 13 and the first guide rod 14 to slide the adjusting rod 15, so that the adjusting rod 15 can be adjusted and moved laterally. With the help of the mounting rod 12, the docking component is horizontally slidably supported. Place the two first clamps 16 on both sides of the coupling 4 respectively, put the coupling 4 on the input shaft 2, insert the docking shaft 5 into the coupling 4, and flip the two second clamps upward. Clamps 17 clamp the input shaft 2 and the docking shaft 5 respectively. Rotating the fixing bolt 18 and tightening the fixing nut 19 stably engages the first clamp 16 and the second clamp 17, providing stable clamping and limiting of the input shaft 2 and the docking shaft 5. Then, rotating the adjusting nut 21 in the adjusting component causes the corresponding second clamp 17 to move under the threaded transmission of the adjusting screw 22, allowing the docking shaft 5 to continue moving into the coupling 4, achieving a tight connection between the input shaft 2, the coupling 4, and the docking shaft 5. During the connection process, rotating the support plate 23 moves the bracket 25 to a horizontal position, releasing the insertion rod 29. The first tension spring 30, under tension, drives the insertion rod 29 into the slot, horizontally positioning the bracket 25. Pushing the bracket 25 causes the drive shaft 26 to engage with one end of the docking shaft 5. With the first positioning screw 27 in close contact, it is clamped with the groove to position the support plate 23. The drive shaft 26 is used to keep the docking shaft 5 stable when it is connected to the coupling 4. After the connection of the input shaft 2, coupling 4 and docking shaft 5 is completed, the second lifting assembly is operated to push the second moving plate 33 to move longitudinally, which drives the two second moving frames 34 to move longitudinally, moving the test assembly to the same height as the input shaft 2 and docking shaft 5. The lateral moving slide plate 36 is moved to adjust the lateral position of the test assembly. The second positioning screw 49 is rotated to make it in close contact with the bottom of the support slide rail 35, which brakes and limits the moving slide plate 36. The bidirectional screw 39 in the test assembly is rotated, and under the thread transmission of the two threaded plates 40, the two threaded plates 40 are driven. The two detection rollers 43 move in opposite directions, adjusting the distance between them so that their positions correspond to the input shaft 2 and the docking shaft 5, respectively. The scale rod 42 is released, and the third tension spring 47, under tension, pulls the limiting plate, causing the scale rod 42 to move outwards from the support guide 41. This brings the detection rollers 43 into contact with the side of the input shaft 2 or the docking shaft 5. Then, the drive shaft 26 rotates, causing the docking shaft 5 to rotate. Under the connection of the coupling 4, the input shaft 2 rotates synchronously. The two detection rollers 43 roll along the outer surface of the input shaft 2 or the docking shaft 5. If the axis of the input shaft 2 or the docking shaft 5 shifts, the corresponding detection roller 43 drives the scale rod 42 to move. The offset of the input shaft 2 or the docking shaft 5 is detected by the scale lines on the scale rod 42. After the detection is completed...Pulling the positioning rod 44 moves it out of the positioning slot, releasing the tension of the second tension spring 45, and retracting the scale rod 42 into the support guide 41. Under the action of the second tension spring 45, the positioning rod 44 is inserted into the positioning slot to position the scale rod 42. If the height of the docking assembly or test assembly needs to be adjusted again, the rack 54 is pushed laterally. Under the meshing transmission action with the corresponding two transmission gears 58, the two threaded rings 57 rotate. Under the threaded transmission action of the threaded rings 57 and the corresponding moving screw 51, the first moving plate 8 or the second moving plate 33 moves longitudinally. After adjustment, the third positioning screw 59 is twisted to tightly clamp it with the corresponding second guide rod 56, positioning the rack 54 and maintaining the stability of the docking assembly or test assembly height. In addition, the two handle rods 50 can be used to facilitate the handling of the overall assembly fixture.

[0049] The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A truck gearbox gear shaft alignment assembly fixture, used for assembling and adjusting the gearbox body (1) and the mating shaft (5), wherein, An input shaft (2) and an output shaft (3) are respectively mounted on the gearbox body (1). The output shaft (3) is connected to the mating shaft (5) via a coupling (4). The gearbox includes a base (6). The base (6) is characterized in that an assembly mechanism and a testing mechanism are respectively provided on its top. The assembly mechanism includes: A first lifting component is set on the top of the base (6), and a docking component is connected to the first lifting component. The first component is used to support and position the input shaft (2) and the docking shaft (5) when connecting the input shaft (2), the coupling (4) and the docking shaft (5), so that the input shaft (2) and the docking shaft (5) are on the same axis. Testing institutions include: A second lifting assembly is set on the top of the base (6). A test assembly is connected to the second lifting assembly. The test assembly is used to detect the concentricity of the input shaft (2) and the docking shaft (5) after the input shaft (2), coupling (4) and docking shaft (5) are connected, so as to ensure that there is no positional deviation between the input shaft (2) and the docking shaft (5) after connection. The second lifting assembly includes two second limiting frames (31) symmetrically fixedly installed on the other side of the top of the base (6). The top of the two second limiting frames (31) is symmetrically fixedly installed with the same second support plate (32). The two second limiting frames (31) are slidably connected with the same second moving plate (33). The second moving frame (34) is slidably connected inside the second limiting frame (31). The bottom of the second moving frame (34) is fixedly connected to the top of the second moving plate (33). The top of the second moving frame (34) passes through the second support plate (32) and extends to the top of the second support plate (32). The top of the two second support plates (32) is fixedly installed with the same support slide rail (35). The moving slide plate (36) is slidably connected on the support slide rail (35). The test assembly is installed on the moving slide plate (36). The test assembly includes two supporting slide rods (37) symmetrically fixedly installed on the top of the movable slide plate (36), and two fixing plates (38). The two fixing plates (38) are located on both sides of the supporting slide rods (37), and the fixing plates (38) are fixedly connected to one end of the two supporting slide rods (37). The same bidirectional screw (39) is rotatably connected to the two fixing plates (38). The bidirectional screw (39) is provided with two threaded grooves in opposite directions. The same threaded plate (40) is slidably connected to the two supporting slide rods (37). There are two threaded plates (40). The bidirectional screw (39) passes through the two threaded plates (40) respectively. The two threaded plates (40) are threadedly connected to the corresponding threaded grooves respectively. A support guide (41) is fixedly installed on the top of the plate (40). A scale rod (42) is slidably connected inside the support guide (41). One end of the scale rod (42) extends to the outside of the support guide (41) and is equipped with a detection stop wheel (43). A limit rod (46) is also fixedly installed on the support guide (41). A limit plate is slidably connected on the limit rod (46). The bottom of the limit plate extends into the support guide (41) and is fixedly connected to the top side of the scale rod (42). A third tension spring (47) is also sleeved on the limit rod (46). The two ends of the third tension spring (47) are respectively fixedly connected to one end of the limit rod (46) and one side of the limit plate through hooks set at both ends of the third tension spring (47). A positioning rod (44) is slidably connected through one side of the inner wall of the support guide (41). A positioning groove is provided on one side of the scale rod (42). One end of the positioning rod (44) extends into the positioning groove and is engaged with the inner wall of the positioning groove so that the scale rod (42) can be positioned after it is stored in the support guide (41). A second tension spring (45) located outside the support guide (41) is sleeved on the positioning rod (44). The two ends of the second tension spring (45) are respectively fixedly connected to the other end of the positioning rod (44) and one side of the support guide (41) through hooks provided at both ends of the second tension spring (45). A connecting frame (48) is fixedly installed on one side of the movable slide plate (36). The bottom of the connecting frame (48) extends to the bottom of the support slide rail (35). A limiting slide rail is fixedly installed on the bottom of the support slide rail (35). One side of the bottom of the connecting frame (48) extends into the limiting slide rail and slides in connection with the inner wall of the limiting slide rail. A second positioning screw (49) located below the support slide rail (35) is threaded through the connecting frame (48). The second positioning screw (49) is in close contact with the bottom of the support slide rail (35).

2. The truck gearbox gear shaft alignment assembly fixture according to claim 1, characterized in that, The first lifting assembly includes two first limiting frames (7) symmetrically fixedly installed on one side of the top of the base (6). The same first moving plate (8) is slidably connected to the two first limiting frames (7). The same first support plate (9) is fixedly installed on the top of the two first limiting frames (7). A first moving frame (10) is slidably connected inside the first limiting frame (7). The bottom of the first moving frame (10) is fixedly connected to the top of the first moving plate (8). The top of the first moving frame (10) passes through the first support plate (9) and extends above the first support plate (9). The top of the two first moving frames (10) is connected to the same supporting member. The supporting member is connected to the docking assembly and is used to support and limit the docking assembly.

3. The truck gearbox gear shaft alignment assembly fixture according to claim 2, characterized in that, The supporting component includes a connecting rod (11) and a mounting rod (12). The connecting rod (11) and the mounting rod (12) are respectively fixedly installed on the top of the two first movable frames (10). A support rod (13) and a first guide rod (14) are respectively fixedly installed on one side of the connecting rod (11). One end of the support rod (13) and one end of the first guide rod (14) are fixedly connected to one side of the mounting rod (12). The same adjusting rod (15) is slidably sleeved on the support rod (13) and the first guide rod (14). The docking assembly is connected to the mounting rod (12) and the adjusting rod (15) respectively.

4. The truck gearbox gear shaft alignment assembly fixture according to claim 3, characterized in that, The support rod (13) and the first guide rod (14) are also slidably fitted with the same support plate (23). A rotating groove is provided on one side of the support plate (23), and a rotating plate (24) is rotatably connected in the rotating groove. One side of the rotating plate (24) extends to the outside of the support plate (23) and a bracket (25) is fixedly installed. A drive shaft (26) is rotatably connected to the central area of ​​the bracket (25). A first positioning screw (27) is threaded onto the tray (23). A groove is provided on the top of the first guide rod (14). The bottom end of the first positioning screw (27) extends into the groove and is clamped to the inner wall of the groove. An mounting plate (28) is fixedly installed on one side of the top of the tray (23). A plug rod (29) is slidably connected through the mounting plate (28). A slot is provided on the side of the bracket (25) near the plug rod (29). One end of the plug rod (29) extends into the slot and is clamped to the inner wall of the slot. A first tension spring (30) is sleeved on the plug rod (29). The two ends of the first tension spring (30) are respectively fixedly connected to one side of the mounting plate (28) and the other end of the plug rod (29) through hooks provided at the two ends of the first tension spring (30).

5. The truck gearbox gear shaft alignment assembly fixture according to claim 1, characterized in that, The docking assembly includes two first clamps (16), which are fixedly mounted on the mounting rod (12) and the adjusting rod (15) respectively. The two first clamps (16) are located on both sides of the coupling (4). A second clamp (17) is rotatably connected to the first clamps (16). The first clamps (16) and the second clamps (17) on both sides are used to clamp and position the input shaft (2) and the docking shaft (5) respectively, so as to connect the input shaft (2), the coupling (4) and the docking shaft (5). At the same time, the input shaft (2) and the docking shaft (5) can be kept at the same horizontal height. The same adjustment component is connected to one side of the two second clamps (17). The adjustment component is used to adjust the distance between the two second clamps (17). A fixing bolt (18) is rotatably connected to the first clamp (16). A fixing nut (19) is threaded on the fixing bolt (18). The fixing nut (19) is located on the side of the second clamp (17) away from the first clamp (16) and is clamped to the second clamp (17).

6. The truck gearbox gear shaft alignment assembly fixture according to claim 5, characterized in that, The adjusting component includes a connecting pipe (20) and an adjusting screw (22). The connecting pipe (20) and the adjusting screw (22) are respectively fixedly installed on one side of the two second clamps (17). One end of the connecting pipe (20) is rotatably connected to an adjusting nut (21). The adjusting screw (22) passes through the adjusting nut (21) and is threadedly connected to the adjusting nut (21).

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