Gear hub inner side distance adjusting device and adjusting method for locomotive wheelset assembling

Abstract

The invention belongs to the technical field of measurement, and particularly discloses a gear hub inner side distance adjusting device and method for locomotive wheelset assembling, the gear hub inner side distance adjusting device for locomotive wheelset assembling comprises a base and a wheel axle located above the base, and the outer wall of the wheel axle is sleeved with two gears; oil grooves are formed in the inner walls of the two gears, oil injection holes are formed in the sides, close to each other, of the two gears, and the oil injection holes communicate with the adjacent oil grooves and are used for injecting high-pressure oil into the oil grooves; according to the invention, during measurement and adjustment, the thrust pipe abuts against the gear, so that the gear can be prevented from shifting towards the outer side due to injection of high-pressure oil in the later period, and the two measuring cylinders can be always located on the same horizontal line at different angles for measurement during measurement.

Description

Technical Field

[0001] The present invention relates to the field of measurement technology, and in particular to a gear hub inner distance adjustment device and an adjustment method for assembling a locomotive wheel set. Background Art

[0002] The wheelset is the part of the rolling stock that contacts the rails. It consists of two wheels securely mounted on a single axle. The wheelset ensures the rolling stock's operation and steering on the rails, bearing all static and dynamic loads from the rolling stock and transferring these loads to the rails. It also transfers loads caused by track irregularities to various rolling stock components. Furthermore, the wheelset also controls the rolling stock's drive and braking.

[0003] After the left and right gears are assembled, the gear phase angle, gear hub inner distance, gear rim inner distance and left and right symmetry deviation must be adjusted to meet the process requirements (such as Figure 2 ).

[0004] When adjusting, first inject high-pressure oil (≤200 MPA) into the oil filling hole of the gear to allow the gear to rotate and move easily.

[0005] The following shortcomings still exist when making actual adjustments: 1. After the high-pressure oil is injected into the gear, it often moves outward due to the direction of the oil injection hole. It is impossible to accurately control the distance of the inner movement, making adjustment difficult; 2. Measurement is required before adjusting the gear hub inside distance and gear rim inside distance. However, when using the wheelset inside distance gauge during the measurement process, it is difficult to maintain its levelness, resulting in limited measurement accuracy.

[0006] In response to the above problems, the present invention document proposes a gear hub inner distance adjustment device and adjustment method for locomotive wheel set assembly. Summary of the Invention

[0007] The purpose of the present invention is to solve the problem that the existing gear hub inner distance adjustment device and adjustment method for locomotive wheelset assembly often move outward after the injection of high-pressure oil, making it difficult to maintain the horizontality of the wheelset inner distance scale, resulting in inaccurate measurement.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions: A gear hub inner distance adjustment device for assembling a locomotive wheel set comprises a base and an axle located above the base, the outer wall of the axle being sleeved with two gears, the inner walls of the two gears being provided with oil grooves, the sides of the two gears being close to each other being provided with oil filling holes, and the oil filling holes being connected to the adjacent oil grooves for injecting high-pressure oil into the oil grooves, the top of the base being slidably connected to two clamping plates for clamping the two ends of the axle, and a support platform being provided above the base for lifting the axle upward; It also includes two thrust tubes, which are respectively located on both sides of the top of the wheel shaft and are used to limit the sides of the two gears away from each other; It also includes two measuring cylinders, both of which are located on one side of the support platform and are used to measure the gear rim inner side distance and the gear hub inner side distance between the two gears; Two sets of blocking structures are respectively set at both ends of the axle to limit one side of the gear; The positioning structure is set in the base and is used to clamp the wheel axle and place the support platform at the center of the two gears, which is convenient for accurate data measurement in the later stage; The measuring structure is arranged on both sides of the support platform and is used to enable the two measuring cylinders to measure the inner side distance of the gear rim and the inner side distance of the gear hub at different angles.

[0009] In one possible design, the blocking structure includes a bearing plate arranged at one end of the wheel axle, a fastening bolt passing through the bearing plate, and one end of the fastening bolt is threadedly connected to the wheel axle for fixing the bearing plate to one end of the wheel axle, a screw is fixed on the side of the bearing plate close to the gear, a thickened nut is provided with a threaded sleeve on the outer wall of the screw, a movable sleeve is provided on the side of the thickened nut close to the gear, and the movable sleeve is sleeved on the outer wall of the screw, the cooperation between the thickened nut and the screw is used to push the movable sleeve to move toward the gear direction, and a thrust tube is fixed on the end of the movable sleeve away from the thickened nut for contacting the gear; the bearing plate is fixed to the end of the wheel axle by fastening bolts, and then the thickened nut is rotated, the thickened nut is threadedly connected to the screw, and the thickened nut pushes the movable sleeve and the thrust tube to move toward the middle through the thrust bearing, so that the end of the thrust tube is close to the outer hub surface of the gear to limit the gear, and then the high-pressure oil pump is started to adjust the inner side distance of the gear rim and the inner side distance of the gear hub.

[0010] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. The cam is fixed on the upper end of the wheel shaft, and the cam is fixed on the lower end of the wheel shaft to support the cam.

[0011] In one possible design, the measuring structure includes arc-shaped plates slidably arranged on both sides of the support platform, and support frames are welded to the sides of the two arc-shaped plates away from each other, a threaded rod is rotatably connected in one of the support frames, and one end of the threaded rod rotates through one end of the support frame and extends to one side of the support frame, a fixed rod is fixed in the other support frame, and the two support frames are slidably connected with the same U-shaped plate, one end of the fixed rod slides through the U-shaped plate to make the U-shaped plate move smoothly, one end of the threaded rod is threaded through the U-shaped plate, and the threaded rod is used to control the U-shaped plate. The plate moves, and the two measuring cylinders are respectively fixed at the two ends of the U-shaped plate; the threaded rod drives the two measuring cylinders to move inward through the U-shaped plate, and when moving, until the ball moves between the two gears, the cooperation of the ball and the spring makes the ball close to the gear, and then the inner side distance of the gear rim is obtained by cooperating with the scale mark, and the threaded rod is continued to be rotated to make the measuring cylinder continue to move inward, so as to obtain the inner side distance of the gear hub, and then the measuring cylinder and the support frame are driven to rotate by the U-shaped plate, and the inner side distance of the gear rim and the inner side distance of the gear hub are measured at different angles to obtain more accurate data.

[0012] In a possible design, the measuring structure also includes two measuring rods, and the ends of the two measuring cylinders that are away from each other are provided with sliding grooves, and the ends of the two measuring rods that are close to each other slide and extend into the corresponding sliding grooves respectively. The ends of the two measuring rods that are close to each other are fixed with springs, and the ends of the two springs that are close to each other are respectively fixed to the inner walls of the two sliding grooves that are close to each other, so as to make the measuring rods close to the gears, and the ends of the two measuring rods that are away from each other are embedded with balls, so as to reduce the friction between the measuring rods and the gears, and one side of the two measuring rods is provided with scale marks, so as to measure the distance the measuring rods extend to obtain the inner side distance of the wheel rim and the inner side distance of the gear hub, and the ends of the two measuring cylinders that are close to each other are fixed with sliding blocks, and the two sliding blocks slide in the two support frames respectively; the U-shaped plate drives the two measuring cylinders to move inward, and when moving, until the ball moves between the two gears, the cooperation of the ball and the spring makes the ball close to the gear, and then the inner side distance of the gear rim is obtained by cooperating with the end of the measuring cylinder and the scale mark.

[0013] In one possible design, a rectangular groove is provided on the top of the two measuring cylinders, and the two rectangular grooves are located at the ends of the two measuring cylinders away from each other. A shift rod is slidably connected in the two rectangular grooves, and the two shift rods are respectively fixed on the top of the two measuring rods, and are used to pull the measuring rods into the sliding grooves.

[0014] In one possible design, annular grooves are provided at both ends of the support platform, and arc tracks are slidably connected in the two annular grooves. The sides of the two arc tracks that are away from each other are fixedly connected to the corresponding arc plates, so that the U-shaped plate can rotate along the track of the annular groove to perform multi-angle measurement.

[0015] In one possible design, a thrust bearing is provided between the thickened nut and the movable sleeve, and the thrust bearing sleeve is provided on the outer wall of the screw. The outer wall of the screw is provided with multiple key slots, and key blocks are slidably provided in the multiple key slots. The multiple key blocks are fixed on the inner wall of the movable sleeve to enable the movable sleeve to slide smoothly on the screw.

[0016] In one possible design, a plurality of clearance grooves are provided on the top of the support platform, a rotating shaft is fixed in each of the clearance grooves, an arc-shaped clamping plate is rotatably sleeved on the outer walls of each of the rotating shafts, a rubber pad is fixed on the bottom inner walls of each of the clearance grooves, and the rubber pad and the rotating shaft are located on both sides of the wheel axle, a hexagonal bolt is provided in each of the arc-shaped clamping plates, and the hexagonal bolt passes through the arc-shaped clamping plate and is threadedly connected to the rubber pad, so as to clamp and fix the wheel axle by the arc-shaped clamping plate; when the wheel axle is placed on the support platform, the arc-shaped clamping plate is rotated to clamp the arc-shaped clamping plate on the wheel axle, and then the hexagonal bolt is tightened to clamp the wheel axle, thereby avoiding shaking of the gear and the wheel axle when the measuring rod and the measuring cylinder are measuring the inner side distance of the gear rim and the inner side distance of the gear hub.

[0017] In the present application, a method for adjusting a gear hub inner distance adjustment device for assembling a locomotive wheelset comprises the following steps: S1. Preparation before measurement: Place the axle and gear on the base, use the motor to drive the bidirectional screw, so that the mobile seat drives the placement table and support table to rise, the support table holds the axle, and the clamping plate clamps both ends of the axle to complete the fixation and preliminary symmetrical positioning, in preparation for the gear spacing and symmetry measurement; S2. To prevent gear shifting, first secure the bearing plate to the axle end with the tightening bolts. Then, rotate the thickened nut to push the movable sleeve and thrust tube against the outer hub surface of the gear through the thrust bearing to limit the position. Then, start the high-pressure oil pump to adjust the spacing. The thrust bearing between the thickened nut and the movable sleeve ensures convenient and safe operation. S3. Before adjustment, measure the inside distance of the gear rim and the inside distance of the gear hub. By rotating the threaded rod, the U-shaped plate drives the measuring cylinder close to the gear. The ball and spring cooperate to ensure close contact with the gear surface. The end of the measuring cylinder matches the scale mark and reads the required data. Continue rotating the threaded rod to further measure the inside distance of the gear hub. Use the U-shaped plate to rotate the measuring cylinder and support frame to achieve multi-angle measurement and ensure data accuracy. After completion, start the high-pressure oil pump to make adjustments. S4. When the axle is supported on the support platform, rotate the arc-shaped clamping plate and clamp the axle, tighten the hexagonal bolts to stabilize the axle, prevent the gear and axle from shaking during measurement, and ensure measurement accuracy.

[0018] Beneficial effect: In the present invention, a fastening bolt passes through the bearing plate, a screw is fixed on the side of the bearing plate close to the gear, a thickened nut is provided on the threaded sleeve of the outer wall of the screw, a movable sleeve is provided on the side of the thickened nut close to the gear, and the movable sleeve is provided on the outer wall of the screw, and a thrust tube is fixed on the end of the movable sleeve away from the thickened nut; the bearing plate is fixed to the end of the wheel shaft by fastening the bolts, and then the thickened nut is rotated, the thickened nut is threadedly connected to the screw, and the thickened nut pushes the movable sleeve and the thrust tube to move toward the middle through the thrust bearing, so that the end of the thrust tube is close to the outer hub surface of the gear to limit the gear, and then the high-pressure oil pump is started to adjust the inner side distance of the gear rim and the inner side distance of the gear hub; Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion. In the present invention, a support frame is welded on one side of the two arc plates away from each other, a threaded rod is rotatably connected in one of the support frames, and the same U-shaped plate is slidably connected in the two support frames, one end of the threaded rod is threadedly penetrates the U-shaped plate, and the two measuring cylinders are respectively fixed at both ends of the U-shaped plate; the threaded rod drives the two measuring cylinders to move inward through the U-shaped plate, and the cooperation of the ball and the spring makes the ball close to the gear, and then the inner side distance of the gear rim is obtained by cooperating with the end of the measuring cylinder and the scale mark, and the threaded rod is continued to be rotated to make the measuring cylinder continue to move inward, so as to obtain the inner side distance of the gear hub, and then the measuring cylinder and the support frame are driven to rotate by the U-shaped plate, so that the two measuring cylinders are always on the same horizontal line at different angles to measure the inner side distance of the gear rim and the inner side distance of the gear hub, thereby obtaining more accurate data; In the present invention, the resistance of the thrust tube to the gear during measurement and adjustment can prevent the gear from shifting outward due to the subsequent injection of high-pressure oil, and the two measuring tubes can always be on the same horizontal line at different angles during measurement, so that more accurate data can be obtained, which is convenient for subsequent adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a gear hub inner distance adjustment device for locomotive wheel set assembly provided by Example 1 of the present invention; Figure 2 A schematic cross-sectional view of a gear of a gear hub inner distance adjustment device for assembling a locomotive wheelset provided in Example 1 of the present invention; Figure 3 A schematic diagram of a three-dimensional exploded structure of a base, a support platform, and a clamping plate of a gear hub inner distance adjustment device for assembling a locomotive wheelset provided in Example 1 of the present invention; Figure 4 A schematic diagram of the three-dimensional structure of the thrust tube and gear of a gear hub inner distance adjustment device for assembling a locomotive wheel set provided in Example 1 of the present invention; Figure 5A schematic diagram of a three-dimensional exploded structure of a movable sleeve, a screw rod, and a thickened nut of a gear hub inner distance adjustment device for assembling a locomotive wheelset provided in Example 1 of the present invention; Figure 6 A schematic diagram of the three-dimensional structure of a support platform, an arc-shaped plate, and a U-shaped plate of a gear hub inner distance adjustment device for assembling a locomotive wheelset provided in Example 1 of the present invention; Figure 7 A schematic diagram of a three-dimensional exploded structure of a support platform, a curved track, and a curved plate of a gear hub inner distance adjustment device for assembling a locomotive wheelset provided in Example 1 of the present invention; Figure 8 A schematic diagram of the three-dimensional structure of a U-shaped plate and a measuring cylinder of a gear hub inner distance adjustment device for locomotive wheelset assembly provided in Example 1 of the present invention; Figure 9 A schematic diagram of a partial three-dimensional exploded structure of a measuring rod and a measuring cylinder of a gear hub inner distance adjustment device for locomotive wheelset assembly provided by Example 1 of the present invention; Figure 10 A schematic sectional three-dimensional structural diagram of a support platform and an arc-shaped clamping plate of a gear hub inner distance adjustment device for assembling a locomotive wheelset provided in Example 2 of the present invention; Figure 11 for Figure 2 Enlarged view of part A; Figure 12 for Figure 4 Magnified view of part B.

[0020] In the figure: 1. Base; 2. Axle; 3. Gear; 4. Oil tank; 5. Oil filling hole; 6. Bearing plate; 7. Fastening bolt; 8. Screw; 9. Thickened nut; 10. Thrust bearing; 11. Movable sleeve; 12. Thrust tube; 13. Keyway; 14. Key block; 15. Moving groove; 16. Guide rod; 17. Bidirectional screw; 18. Moving seat; 19. Connecting rod; 20. Placement table; 21. Support table; 22. Telescopic rod; 23. Moving table; 2 4. Clamp; 25. Annular groove; 26. Arc track; 27. Arc plate; 28. Support frame; 29. ​​Threaded rod; 30. Fixed rod; 31. U-shaped plate; 32. Measuring tube; 33. Sliding block; 34. Sliding groove; 35. Measuring rod; 36. Spring; 37. Ball bearing; 38. Scale mark; 39. Rectangular groove; 40. Push rod; 41. Clearance groove; 42. Rotating shaft; 43. Arc clamping plate; 44. Rubber pad; 45. Hexagonal bolt. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] Example 1: Reference Figure 1 and Figure 2 、 Figure 11 The present invention relates to an adjustment device for use in the field of locomotive wheel maintenance. The device comprises a base 1 and an axle 2 located above the base 1. Two gears 3 are sheathed on the outer wall of the axle 2. The inner walls of these two gears 3 are each provided with an oil groove 4. Oil filling holes 5 are provided on the sides of the two gears 3 that are adjacent to each other. The oil filling holes 5 are connected to the adjacent oil grooves 4. In this way, high-pressure oil can be injected into the oil grooves 4 through the oil filling holes 5 to adjust the position of the gears 3 on the axle 2.

[0023] Reference Figure 1-Figure 3 、 Figure 11 Two clamping plates 24 are slidably connected to the top of the base 1. These two clamping plates 24 are used to clamp the ends of the axle 2 to ensure the stability of the axle 2 during adjustment. A support platform 21 is provided above the base 1. This support platform 21 is used to lift the axle 2 and the gear 3 on it upwards to facilitate subsequent operations and adjustments.

[0024] Reference Figure 2 、 Figure 11 In order to limit the gear 3, the device also includes two thrust tubes 12, which are respectively located on both sides of the top of the wheel shaft 2, and are used to limit the side where the two gears 3 are away from each other, ensuring that the gear 3 will not deviate to both sides during the adjustment process.

[0025] Reference Figure 1 and Figure 6 In order to measure the inner distance between the gear rim and the gear hub, the device further includes two measuring cylinders 32, both of which are located on one side of the support platform 21. Through these two measuring cylinders 32, the inner distance between the gear rim and the gear hub between the two gears 3 can be accurately measured.

[0026] Reference Figure 2 、 Figure 11 、 Figure 4 and Figure 5 In order to achieve the limitation of one side of the gear 3, the present device is provided with a set of blocking structures at both ends of the wheel axle 2. This set of blocking structures includes a load-bearing plate 6 arranged at one end of the wheel axle 2, and a fastening bolt 7 is passed through the load-bearing plate 6. One end of the fastening bolt 7 is threadedly connected to the wheel axle 2, thereby fixing the load-bearing plate 6 to one end of the wheel axle 2. A screw 8 is fixed on the side of the load-bearing plate 6 close to the gear 3, and a thickened nut 9 is threadedly sleeved on the outer wall of the screw 8. A movable sleeve 11 is provided on the side of the thickened nut 9 close to the gear 3, and the movable sleeve 11 is sleeved on the outer wall of the screw 8. By rotating the thickened nut 9, the movable sleeve 11 can be pushed toward the direction of the gear 3. A thrust tube 12 is fixed on the end of the movable sleeve 11 away from the thickened nut 9, which is used to resist the gear 3 and achieve the limitation of the gear 3.

[0027] When using this device, first fix the bearing plate 6 to the end of the axle 2 by tightening the bolts 7, then turn the thickened nut 9 so that the end of the thrust tube 12 is close to the outer hub surface of the gear 3 to limit the position of the gear 3. Next, start the motor to drive the bidirectional screw 17 to rotate, so that the support platform 21 lifts the axle 2 upward, and the two clamps 24 clamp the two ends of the axle 2. Then, inject high-pressure oil into the oil tank 4 through the oil filling hole 5 to adjust the position of the gear 3 on the axle 2. Finally, use the measuring cylinder 32 to measure the inner side distance of the gear rim and the inner side distance of the gear hub, and adjust according to the measurement results until the required inner side distance of the gear hub is achieved.

[0028] Reference Figure 1 and Figure 3 To achieve the clamping of the wheel axle 2 and the positioning of the support platform 21, the device also includes a positioning structure. This positioning structure includes a movable groove 15 provided at the top of the base 1, into which a bidirectional lead screw 17 is rotatably connected. The outer wall of the bidirectional lead screw 17 is threadedly sleeved with two movable seats 18 and two movable platforms 23. These two movable seats 18 and two movable platforms 23 are respectively located on the forward and reverse threaded sections of the bidirectional lead screw 17. Two guide rods 16 are fixed in the movable groove 15, and these two guide rods 16 are located on both sides of the bidirectional lead screw 17. The two movable platforms 23 and the two movable seats 18 are slidably sleeved on the outer walls of the two guide rods 16 to limit the movement of the movable seats 18 and movable platforms 23. The tops of the two movable platforms 23 are fixedly connected to the bottom of the clamping plate 24, and the tops of the two movable seats 18 are rotatably connected to both sides. The tops of the four connecting rods 19 are all rotatably connected to the same placement platform 20, and the support platform 21 is fixed to the top of the placement platform 20.

[0029] The motor drives the bidirectional lead screw 17, which in turn moves the two movable bases 18 toward the center. The movable base 18 pushes the placement platform 20 and support platform 21 upward via the connecting rod 19, which in turn lifts the axle 2 upward. Simultaneously, the two clamping plates 24 move toward each other, clamping the ends of the axle 2. This effectively supports and secures the axle 2 and gear 3, while also ensuring that the support platform 21 is centered on the axle 2, preserving the symmetry of the two gears 3 on the axle 2.

[0030] Multiple support plates are fixed in the movable groove 15, and a telescopic rod 22 is fixed on the top of the support plate in the middle, and the top of the telescopic rod 22 is fixedly connected to the bottom of the placement table 20, which is used to make the placement table 20 rise and fall smoothly. The telescopic rod 22 consists of an inner rod and an outer rod, and the outer rod is slidably sleeved on the outer wall of the inner rod.

[0031] Reference Figure 6-Figure 9In order to achieve accurate measurement of the gear rim inner distance and the gear hub inner distance, the device also includes a measuring structure. This measuring structure is arranged on both sides of the support platform 21, and is used to enable two measuring cylinders 32 to measure the gear rim inner distance and the gear hub inner distance at different angles. By adjusting the position and angle of the measuring cylinder 32, accurate measurement of the gear 3 can be achieved. The adjustment device includes a measuring structure, and the specific structure of the measuring structure includes arc-shaped plates 27 slidingly arranged on both sides of the support platform 21. The two arc-shaped plates 27 can be slid and adjusted along the two sides of the support platform 21 to accommodate gears of different sizes. Support frames 28 are welded on the side of the two arc-shaped plates 27 away from each other. The two support frames 28 provide stable support for the subsequent measuring mechanism.

[0032] Reference Figure 7 and Figure 8 A threaded rod 29 is rotatably connected to one of the support frames 28. One end of the threaded rod 29 rotates through one end of the support frame 28 and extends to the outside of the support frame 28, making it easier for the operator to rotate. A fixed rod 30 is fixed to the other support frame 28 to provide guidance for the subsequent sliding connection.

[0033] Reference Figure 6-Figure 8 A U-shaped plate 31 is slidably connected to the two support frames 28. The design of this U-shaped plate 31 allows it to slide smoothly within the two support frames 28. One end of a fixed rod 30 slides through the U-shaped plate 31, providing a stable guide for the sliding of the U-shaped plate 31. One end of a threaded rod 29 is threaded through the U-shaped plate 31. By rotating the threaded rod 29, the sliding distance of the U-shaped plate 31 within the two support frames 28 can be controlled.

[0034] Reference Figure 8 and Figure 9 Two measuring cylinders 32 are fixed to each end of the U-shaped plate 31. These two measuring cylinders 32 are used for subsequent measurement work. Each measuring cylinder 32 has a sliding groove 34 at the distal end, within which a measuring rod 35 is slidably connected. A spring 36 is fixed to the adjacent end of each measuring rod 35, and the other end of the spring 36 is fixed to the inner wall of the sliding groove 34. This design ensures that the measuring rod 35 is tightly attached to the gear 3 due to the action of the spring 36.

[0035] Reference Figure 9 A ball 37 is embedded at the distal end of each measuring rod 35. This design reduces friction between the measuring rod 35 and the gear 3, ensuring more accurate measurements. A graduated scale 38 is also located on one side of the measuring rod 35. This scale 38 measures the distance the measuring rod 35 extends, thereby determining the inside-to-out distance between the gear rim and the gear hub.

[0036] Reference Figure 9 In order to facilitate the operation of the measuring rod 35, a rectangular groove 39 is provided on the top of the two measuring cylinders 32. A lever 40 is slidably connected in the rectangular groove 39. The lever 40 is fixed on the top of the measuring rod 35. By pulling the lever 40, the measuring rod 35 can be pulled into the sliding groove 34, which is convenient for adjustment and measurement.

[0037] A sliding block 33 is fixed to each of the ends of the two measuring cylinders 32 that are close to each other. The two sliding blocks 33 slide in the two supporting frames 28 respectively to increase the stability of the movement of the measuring cylinders 32.

[0038] During use, first adjust the position of the curved plate 27 so that the measuring structure can adapt to the size of the gear. Then, rotate the threaded rod 29, and drive the two measuring cylinders 32 to move inward through the U-shaped plate 31 until the ball 37 moves between the two gears 3. At this time, the cooperation between the ball 37 and the spring 36 makes the ball 37 close to the gear 3. Then, by observing the cooperation between the end of the measuring cylinder 32 and the scale mark 38, the gear rim inner distance can be obtained. Then, continue to rotate the threaded rod 29 to make the measuring cylinder 32 continue to move inward, and the gear hub inner distance can be obtained. In order to obtain more accurate data, the measuring cylinder 32 and the support frame 28 can be driven to rotate by the U-shaped plate 31 to measure the gear rim inner distance and the gear hub inner distance at different angles.

[0039] In addition, when the position of the measuring rod 35 needs to be adjusted, the measuring rod 35 can be pulled into the sliding groove 34 by pulling the lever 40, and then adjusted. After the adjustment is completed, the lever 40 is released, and the measuring rod 35 will be close to the gear 3 under the action of the spring 36 to continue the measurement work.

[0040] Reference Figure 7 Annular grooves 25 are provided at both ends of the support platform 21. These two annular grooves 25 are designed to accommodate and guide the sliding movement of the curved rails 26. Specifically, the two curved rails 26 are slidably connected within the corresponding annular grooves 25, and the sides of the two curved rails 26 facing away from each other are fixedly connected to corresponding curved plates 27.

[0041] This design allows for the position of the U-shaped plate 31 to be changed by moving the arc track 26 when the gear hub inner side distance needs to be measured, thereby enabling the U-shaped plate 31 to rotate at multiple angles along the trajectory of the annular groove 25, thereby achieving multi-angle measurement of the gear hub inner side distance and improving the accuracy and flexibility of the measurement.

[0042] Reference Figure 4 、 Figure 12 and Figure 5Furthermore, a thrust bearing 10 is provided between the thickened nut 9 and the movable sleeve 11. The thrust bearing 10 is sleeved on the outer wall of the screw 8. This design can reduce the friction between the thickened nut 9 and the movable sleeve 11, allowing the movable sleeve 11 to slide smoothly on the screw 8. In order to enhance the stability of the sliding of the movable sleeve 11 on the screw 8, a plurality of key slots 13 are provided on the outer wall of the screw 8. Key blocks 14 are slidably provided in these key slots 13, and these key blocks 14 are fixed to the inner wall of the movable sleeve 11.

[0043] With such a design, when the movable sleeve 11 slides on the screw rod 8 , the key block 14 slides in the key groove 13 , thereby ensuring the smoothness and accuracy of the sliding of the movable sleeve 11 .

[0044] In summary, through the design of this embodiment, the precise adjustment of the inner side distance of the gear hub of the locomotive wheelset can be achieved, and the measurement process is stable and accurate, thereby improving the efficiency and accuracy of the locomotive wheelset assembly.

[0045] Example 2: Reference Figure 10 , improved on the basis of Example 1: a plurality of clearance grooves 41 are further provided on the top of the support platform 21. A rotating shaft 42 is fixed in these clearance grooves 41, and an arc-shaped clamping plate 43 is rotatably sleeved on the outer wall of the rotating shaft 42. In order to allow the arc-shaped clamping plate 43 to better clamp the wheel axle 2, rubber pads 44 are fixed on the bottom inner walls of the plurality of clearance grooves 41. These rubber pads 44 and the rotating shaft 42 are located on both sides of the wheel axle 2, playing a role of buffering and stabilization. Hexagonal bolts 45 are provided in the arc-shaped clamping plate 43, which pass through the arc-shaped clamping plate 43 and are threadedly connected to the rubber pads 44. When the wheel axle 2 needs to be fixed on the support platform 21, it is only necessary to rotate the arc-shaped clamping plate 43, clamp the arc-shaped clamping plate 43 on the wheel axle 2, and then tighten the hexagonal bolts 45. Such a design can effectively avoid the shaking of the gear 3 and the axle 2 when measuring the inner side distance of the gear rim and the inner side distance of the gear hub in the later stage, thereby improving the accuracy and stability of the measurement.

[0046] A method for adjusting a gear hub inner distance adjustment device for assembling a locomotive wheelset comprises the following steps: S1. Before measuring, the wheel axle 2 and the gear 3 are moved to the base 1, and the wheel axle 2 is located above the support platform 21. The two-way screw 17 is driven by the motor to rotate, and the two-way screw 17 drives the two moving seats 18 to move toward the middle. The moving seat 18 pushes the placement platform 20 and the support platform 21 upward through the connecting rod 19, and the support platform 21 lifts the wheel axle 2 upward. At the same time, the two clamping plates 24 move toward each other to clamp the two ends of the wheel axle 2 to complete the support and fixation of the wheel axle 2 and the gear 3, and at the same time ensure that the support platform 21 is located in the middle position of the wheel axle 2, preliminarily ensuring the symmetry of the two gears 3 on the wheel axle 2, which is convenient for the later measurement of the inner side distance of the gear rim, the inner side distance of the gear hub, and the left and right symmetry deviation of the two gears 3; S2. Before measurement, to prevent the gear 3 from deviating outward, fix the bearing plate 6 to the end of the wheel shaft 2 by tightening the bolt 7. Then rotate the thickened nut 9. The thickened nut 9 is threadedly connected to the screw 8. The thickened nut 9 pushes the movable sleeve 11 and the thrust tube 12 toward the middle through the thrust bearing 10, so that the end of the thrust tube 12 is close to the outer hub surface of the gear 3 to limit the gear 3. Then start the high-pressure oil pump to adjust the inner distance of the gear rim and the inner distance of the gear hub; to prevent the thrust tube 12 from rotating and damaging the gear 3, a thrust bearing 10 is installed between the thickened nut 9 and the movable sleeve 11, making it convenient and quick to use; S3. Before starting the high-pressure oil pump for adjustment, it is necessary to measure the inner distance of the gear rim and the inner distance of the gear hub. During operation, the threaded rod 29 is rotated, and the threaded rod 29 drives the two measuring cylinders 32 to move inward through the U-shaped plate 31, and when moving, until the ball 37 moves between the two gears 3, the cooperation of the ball 37 and the spring 36 makes the ball 37 close to the gear 3, and then the inner distance of the gear rim is obtained by cooperating with the end of the measuring cylinder 32 and the scale mark 38. The threaded rod 29 is continued to be rotated to make the measuring cylinder 32 continue to move inward to obtain the inner distance of the gear hub, and then the measuring cylinder 32 and the support frame 28 are driven to rotate by the U-shaped plate 31, and the inner distance of the gear rim and the inner distance of the gear hub are measured at different angles to obtain more accurate data, and finally the high-pressure oil pump is started for adjustment. S4. When the axle 2 is placed on the support platform 21, rotate the arc-shaped clamping plate 43 to clamp the arc-shaped clamping plate 43 on the axle 2, and then tighten the hexagonal bolt 45 to clamp the axle 2, so as to prevent the gear 3 and the axle 2 from shaking when the measuring rod 35 and the measuring cylinder 32 are measuring the inner distance of the gear rim and the inner distance of the gear hub.

[0047] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A gear hub inner distance adjustment device for assembling a locomotive wheel set, comprising a base (1) and a wheel axle (2) located above the base (1), the outer wall of the wheel axle (2) being sleeved with two gears (3), the inner walls of the two gears (3) being provided with oil grooves (4), the two gears (3) being provided with oil injection holes (5) on the sides close to each other, and the oil injection holes (5) being connected to the adjacent oil grooves (4) for injecting high-pressure oil into the oil grooves (4), characterized in that: The top of the base (1) is slidably connected to two clamping plates (24) for clamping the two ends of the axle (2); a support platform (21) is provided above the base (1) for lifting the axle (2) upwards; It also includes two thrust tubes (12), which are respectively located on both sides of the top of the wheel shaft (2) and are used to limit the sides of the two gears (3) that are away from each other; It also includes two measuring cylinders (32), both of which are located on one side of the support platform (21) and are used to measure the inner side distance of the gear rim and the inner side distance of the gear hub between the two gears (3); Two sets of blocking structures are respectively arranged at two ends of the wheel shaft (2) and are used to limit one side of the gear (3); A positioning structure, arranged in the base (1), used to clamp the wheel shaft (2) and position the support platform (21) at the center of the two gears (3), so as to facilitate accurate data measurement at a later stage; The measuring structure is arranged on both sides of the support platform (21) and is used to enable two measuring cylinders (32) to measure the inner side distance of the gear rim and the inner side distance of the gear hub at different angles.

2. A gear hub inner distance adjustment device for assembling a locomotive wheel set according to claim 1, characterized in that: The blocking structure comprises a load-bearing plate (6) arranged at one end of the wheel axle (2), a fastening bolt (7) passing through the load-bearing plate (6), and one end of the fastening bolt (7) is threadedly connected to the wheel axle (2) for fixing the load-bearing plate (6) to one end of the wheel axle (2), a screw rod (8) is fixed on a side of the load-bearing plate (6) close to the gear (3), a thickened nut (9) is threadedly sleeved on the outer wall of the screw rod (8), a movable sleeve (11) is provided on a side of the thickened nut (9) close to the gear (3), and the movable sleeve (11) is sleeved on the outer wall of the screw rod (8), the thickened nut (9) cooperates with the screw rod (8) to push the movable sleeve (11) to move in the direction of the gear (3), and a thrust tube (12) is fixed on an end of the movable sleeve (11) away from the thickened nut (9) for contacting the gear (3).

3. A gear hub inner distance adjustment device for assembling a locomotive wheel set according to claim 2, characterized in that: The positioning structure comprises a movable groove (15) arranged at the top of the base (1), a bidirectional lead screw (17) being rotatably connected in the movable groove (15), two movable seats (18) and two movable platforms (23) being threadedly sleeved on the outer wall of the bidirectional lead screw (17), two guide rods (16) being fixed in the movable groove (15), the two guide rods (16) being located on both sides of the bidirectional lead screw (17), the two movable platforms (23) and the two movable seats (18) being slidably sleeved on the outer walls of the two guide rods (16) for limiting the movement of the movable seats (18) and the movable platforms (23), the tops of the two movable platforms (23) being fixedly connected to the bottom of the clamping plate (24), and the two movable seats (18) being sleeved on the outer walls of the two guide rods (16) for limiting the movement of the movable seats (18) and the movable platforms (23), the tops of the two movable platforms (23) being fixedly connected to the bottom of the clamping plate (24), and the two movable seats (18) being sleeved on the outer walls of the two guide rods (16). Both sides of the top of the (18) are rotatably connected to connecting rods (19), the tops of the four connecting rods (19) are rotatably connected to the same placement platform (20), and the support platform (21) is fixed to the top of the placement platform (20) for lifting the wheel axle (2) upward through the support platform (21), the two moving seats (18) are located between the two moving platforms (23), a plurality of support plates are fixed in the moving groove (15), a telescopic rod (22) is fixed to the top of the support plate located in the middle, and the top of the telescopic rod (22) is fixedly connected to the bottom of the placement platform (20) for making the placement platform (20) rise and fall smoothly, the telescopic rod (22) is composed of an inner rod and an outer rod, and the outer rod is slidably sleeved on the outer wall of the inner rod.

4. A gear hub inner distance adjustment device for assembling a locomotive wheel set according to claim 3, characterized in that: The measuring structure comprises arc-shaped plates (27) slidably arranged on both sides of a support platform (21); support frames (28) are welded to the sides of the two arc-shaped plates (27) that are away from each other; a threaded rod (29) is rotatably connected in one of the support frames (28); one end of the threaded rod (29) rotatably penetrates one end of the support frame (28) and extends to one side of the support frame (28); a fixing rod (30) is fixed in the other support frame (28); the two support frames (28) are slidably connected to the same U-shaped plate (31); one end of the fixing rod (30) slidably penetrates the U-shaped plate (31) for allowing the U-shaped plate (31) to move smoothly; one end of the threaded rod (29) threadably penetrates the U-shaped plate (31); the threaded rod (29) is used to control the movement of the U-shaped plate (31); and the two measuring cylinders (32) are respectively fixed at both ends of the U-shaped plate (31).

5. The gear hub inner distance adjustment device for assembling a locomotive wheel set according to claim 4, characterized in that: The measuring structure further comprises two measuring rods (35), the ends of the two measuring cylinders (32) being away from each other are each provided with a sliding groove (34), the ends of the two measuring rods (35) being close to each other are respectively slidably extended into the corresponding sliding groove (34), the ends of the two measuring rods (35) being close to each other are each fixed with a spring (36), the ends of the two springs (36) being close to each other are respectively fixed to the inner wall of the two sliding grooves (34) being close to each other, so as to make the measuring rods (35) close to the gear (3), the ends of the two measuring rods (35) being away from each other are each embedded with a ball (37), so as to reduce the friction between the measuring rods (35) and the gear (3), the one side of the two measuring rods (35) is each provided with a scale mark (38), so as to measure the extension distance of the measuring rods (35) so as to obtain the inner side distance of the wheel rim and the inner side distance of the gear hub, and the ends of the two measuring cylinders (32) being close to each other are each fixed with a sliding block (33), and the two sliding blocks (33) are respectively slid in the two supporting frames (28).

6. The gear hub inner distance adjustment device for assembling a locomotive wheel set according to claim 5, characterized in that: A rectangular groove (39) is provided at the top of each of the two measuring cylinders (32). The two rectangular grooves (39) are located at ends of the two measuring cylinders (32) that are away from each other. A lever (40) is slidably connected in each of the two rectangular grooves (39). The two levers (40) are respectively fixed at the top of each of the two measuring rods (35) and are used to pull the measuring rods (35) into the sliding groove (34).

7. A gear hub inner distance adjustment device for assembling a locomotive wheel set according to claim 6, characterized in that: Both ends of the support platform (21) are provided with an annular groove (25), and arc tracks (26) are slidably connected in the two annular grooves (25). The two arc tracks (26) are fixedly connected to corresponding arc plates (27) on the sides away from each other, so as to enable the U-shaped plate (31) to rotate along the track of the annular groove (25) to perform multi-angle measurement.

8. The gear hub inner distance adjustment device for assembling a locomotive wheel set according to claim 7, characterized in that: A thrust bearing (10) is provided between the thickened nut (9) and the movable sleeve (11), and the thrust bearing (10) is sleeved on the outer wall of the screw rod (8). The outer wall of the screw rod (8) is provided with a plurality of key grooves (13), and key blocks (14) are slidably provided in the plurality of key grooves (13). The plurality of key blocks (14) are fixed on the inner wall of the movable sleeve (11) to enable the movable sleeve (11) to slide smoothly on the screw rod (8).

9. The gear hub inner distance adjustment device for assembling a locomotive wheel set according to claim 8, characterized in that: A plurality of clearance grooves (41) are provided on the top of the support platform (21), a rotating shaft (42) is fixed in each of the clearance grooves (41), an arc-shaped clamping plate (43) is rotatably sleeved on the outer walls of each of the rotating shafts (42), a rubber pad (44) is fixed on the inner walls of the bottoms of each of the clearance grooves (41), and the rubber pad (44) and the rotating shaft (42) are located on both sides of the wheel axle (2), a hexagonal bolt (45) is provided in each of the arc-shaped clamping plates (43), and the hexagonal bolt (45) passes through the arc-shaped clamping plate (43) and is threadedly connected to the rubber pad (44), so as to enable the arc-shaped clamping plate (43) to clamp and fix the wheel axle (2).

10. An adjustment method using the gear hub inner distance adjustment device for assembling a locomotive wheel set as claimed in claim 9, characterized in that: The following steps are involved: S1. Preparation before measurement: place the axle (2) and the gear (3) on the base (1), use the motor to drive the bidirectional screw (17), so that the moving seat (18) drives the placement table (20) and the support table (21) to rise, the support table (21) holds the axle (2), and at the same time, the clamping plate (24) clamps the two ends of the axle (2) to complete the fixation and preliminary symmetrical positioning; S2. To prevent the gear (3) from shifting, first fix the bearing plate (6) to the end of the axle (2) with the fastening bolts (7), then rotate the thickened nut (9), and push the movable sleeve (11) and the thrust tube (12) closely against the outer hub surface of the gear (3) through the thrust bearing (10) to limit the position, and then start the high-pressure oil pump to adjust the spacing; S3. Before adjustment, the inner distance of the gear rim and the inner distance of the gear hub need to be measured; by rotating the threaded rod (29), the U-shaped plate (31) drives the measuring tube (32) close to the gear (3), and the ball (37) and the spring (36) cooperate to ensure that they are in close contact with the surface of the gear (3); the end of the measuring tube (32) and the scale mark (38) are read to obtain the required data; the threaded rod (29) is further rotated to further measure the inner distance of the gear hub; the measuring tube (32) and the support frame (28) are rotated by the U-shaped plate (31) to achieve multi-angle measurement to ensure accurate data; after completion, the high-pressure oil pump is started for adjustment; S4. When the wheel axle (2) is supported on the support platform (21), the arc-shaped clamping plate (43) is rotated to clamp the wheel axle (2), and the hexagonal bolt (45) is tightened to stabilize the wheel axle (2) to prevent the gear (3) and the wheel axle (2) from shaking during the measurement process, thereby ensuring the measurement accuracy.

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