A device for adjusting the axial play of a gear box

Abstract

The application relates to an adjusting device for the axial gap of a gear box, belonging to the technical field of mechanical transmission, which comprises a gear box, a bearing is installed on the inner wall of one side of the gear box through a bearing seat, a bearing cover is fixedly arranged at the position corresponding to the bearing on one side of the gear box through a fastening bolt, an adjusting ring is arranged in the bearing cover, the outer surface of the middle part of the adjusting ring is a conical surface, and a plurality of abutting bolts are arranged on the outer side of the adjusting ring. The abutting bolts are moved along the radial direction in the inner wall of the bearing cover and abut against the conical surface of the adjusting ring by rotating the abutting bolts, the abutting bolts push the adjusting ring to move axially through the conical surface of the adjusting ring, the adjusting ring pushes the outer ring of the bearing, the outer ring of the bearing is abutted, the axial gap of the gear box bearing can be quickly adjusted, the box body does not need to be disassembled, the adjusting work can be completed outside the gear box, and the working efficiency of the axial gap adjustment of the gear box bearing is improved.

Description

Technical Field

[0001] This application relates to the technical field of mechanical transmission, and in particular to a device for adjusting the axial clearance of a gearbox. Background Technology

[0002] As a core power transmission component in mechanical transmission systems, gearboxes are widely used in numerous industrial fields such as wind power equipment, rail transportation, metallurgical machinery, marine power, and construction machinery. Their transmission accuracy, stability, and service life directly determine the operational performance and reliability of the entire main equipment. During gearbox assembly and use, the axial clearance of rotating components such as gears and bearings is a critical parameter. Insufficient clearance can lead to overheating and jamming during operation; excessive clearance can cause axial movement, impact, and noise, affecting transmission accuracy and component lifespan.

[0003] Currently, the axial clearance of gearbox bearings is generally adjusted by selecting shims of different thicknesses. This method requires repeated disassembly, measurement, and trial assembly, which is cumbersome, inefficient, and requires a high level of operator experience, making it difficult to guarantee accuracy. Utility Model Content

[0004] The purpose of this application is to provide a gearbox axial clearance adjustment device, which can quickly adjust the axial clearance of gearbox bearings without disassembling the gearbox body. The adjustment can be completed from the outside of the gearbox, improving the efficiency of gearbox bearing axial clearance adjustment. It solves the problem that the current method of adjusting gearbox bearing axial clearance generally uses shims of different thicknesses, which requires repeated disassembly, measurement and trial assembly, is cumbersome, inefficient, and requires high operator experience and accuracy.

[0005] The axial clearance adjustment device for a gearbox provided in this application adopts the following technical solution: A gearbox axial clearance adjustment device includes a gearbox, a bearing is installed on one side inner wall of the gearbox through a bearing seat, a bearing cover is fixedly installed on one side of the gearbox corresponding to the bearing position by fastening bolts, an adjusting ring is provided inside the bearing cover, the outer surface of the middle part of the adjusting ring is a conical surface, a plurality of clamping bolts are provided on the outer side of the adjusting ring, the plurality of clamping bolts penetrate the side wall of the bearing cover radially, the outer surface of the middle part of the clamping bolts is threaded to the inner wall of the bearing cover, the plurality of clamping bolts are evenly distributed in an array along the circumference of the bearing cover, and the outer surface of one end of the clamping bolt abuts against the conical surface of the outer surface of the middle part of the adjusting ring.

[0006] By adopting the above technical solution, rotating the clamping bolt causes it to move radially within the inner wall of the bearing cover and press against the conical surface of the adjusting ring. This causes the clamping bolt to push the adjusting ring axially through the conical surface of the adjusting ring, thereby pushing the outer ring of the bearing and clamping it against the outer ring. This allows for rapid adjustment of the axial clearance of the gearbox bearing without disassembling the gearbox housing. The adjustment can be completed from outside the gearbox, improving the efficiency of adjusting the axial clearance of the gearbox bearing.

[0007] Preferably, a plurality of limiting rods are fixedly provided on one side of the adjusting ring, and a limiting ring is fixedly provided on the inner wall of the middle part of the bearing cover, with the outer surface of the middle part of the limiting rods inserted into the inner wall of the middle part of the limiting ring.

[0008] By adopting the above technical solution, the movement trajectory of the adjusting ring can be restricted by the sliding of the outer surface of the middle part of the limiting rod within the inner wall of the middle part of the limiting ring, thereby improving the stability of the adjusting ring movement and preventing the adjusting ring from deviating during axial movement.

[0009] Preferably, one end of each of the plurality of clamping bolts is provided with a first bevel gear via a transmission assembly, and a second bevel gear is rotatably provided on the outer surface of the middle part of the bearing cover, the second bevel gear meshing with the plurality of first bevel gears.

[0010] By adopting the above technical solution, rotating the second bevel gear can synchronously drive multiple first bevel gears to rotate, thereby driving multiple clamping bolts to rotate synchronously. This allows the multiple clamping bolts to apply a uniform thrust to the conical surface of the adjusting ring, ensuring that the adjusting ring receives a balanced axial driving force and preventing tilting caused by uneven force on the adjusting ring.

[0011] Preferably, the transmission assembly includes a transmission shaft and a drive sleeve. The transmission shaft is fixedly mounted on one end of the clamping bolt. The inner wall of the middle portion of the drive sleeve is slidably connected to the outer surface of the middle portion of the transmission shaft. The inner wall of the middle portion of the first bevel gear is fixedly connected to the outer surface of the middle portion of the drive sleeve.

[0012] By adopting the above technical solution, the inner wall of the middle part of the drive sleeve is slidably connected to the outer surface of the middle part of the drive shaft, which can prevent the first bevel gear from moving along with the bolt during rotation, thus preventing the first bevel gear from meshing with the second bevel gear. This ensures that the first bevel gear and the second bevel gear mesh stably during the rotation and parallel movement of the bolt.

[0013] Preferably, a support plate is provided on the outer side of the drive sleeve, and the middle outer surface of the drive sleeve is rotatably disposed within the middle inner wall of the support plate. The support plate is fixedly disposed on the middle outer surface of the bearing cover by a fixing plate.

[0014] By adopting the above technical solution, the support plate can provide stable rotational support for the drive sleeve, restrict the movement of the drive sleeve, and improve the stability of the drive sleeve when the second bevel gear drives the drive sleeve to rotate through the first bevel gear.

[0015] Preferably, the outer surface of the middle part of the drive shaft is polygonal, and the shape of the outer surface of the middle part of the drive shaft is adapted to the shape of the inner wall of the middle part of the drive sleeve.

[0016] By adopting the above technical solution, the cooperation between the drive shaft on the outer surface of the polygonal center and the drive sleeve can effectively transmit torque, avoid relative slippage between the drive shaft and the drive sleeve, and enable the drive sleeve to stably drive the drive shaft to rotate.

[0017] Preferably, a worm gear ring is fixedly provided on one side of the second bevel gear, and a worm is rotatably provided on one side of the bearing cover via a connecting frame, the worm meshing with the worm gear ring.

[0018] By adopting the above technical solution, the second bevel gear can be easily driven to rotate through the worm wheel ring by rotating the worm. Furthermore, the self-locking property between the worm and the worm wheel ring can prevent the second bevel gear from rotating on its own after adjustment, thereby preventing the tightening bolt from loosening and ensuring that the tightening bolt can stably tighten the adjusting ring.

[0019] Preferably, the end of the clamping bolt near the adjusting ring is hemispherical, and the outer surface of the hemispherical end of the clamping bolt is slidably connected to the conical surface of the outer surface of the middle part of the adjusting ring.

[0020] By adopting the above technical solution, the hemispherical end of the clamping bolt makes the pushing of the clamping bolt onto the conical surface of the adjusting ring smoother during rotation, and can avoid the clamping bolt from causing scratch damage to the conical surface of the adjusting ring during rotation, thereby improving the stability of the fit between the clamping bolt and the adjusting ring.

[0021] In summary, this application includes at least one of the following beneficial technical effects: This gearbox axial clearance adjustment device, by rotating the clamping bolt, causes the clamping bolt to move radially within the inner wall of the bearing cover and press against the conical surface of the adjusting ring. The clamping bolt then pushes the adjusting ring axially through the conical surface of the adjusting ring, thereby causing the adjusting ring to push against the outer ring of the bearing and tighten it. This allows for rapid adjustment of the axial clearance of the gearbox bearing without disassembling the gearbox, and the adjustment can be completed from outside the gearbox, thus improving the efficiency of adjusting the axial clearance of the gearbox bearing. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of this application; Figure 2This is a three-dimensional sectional view of the structure of this application; Figure 3 This is a front sectional view of a partial structure of this application; Figure 4 This is an exploded view of a partial structure of this application; Figure 5 This is an exploded view of the transmission component and its corresponding structure in this application.

[0023] In the picture: 1. Gearbox; 2. Bearing; 3. Bearing cover; 4. Adjusting ring; 5. Tightening bolt; 6. Limiting rod; 7. Limiting ring; 8. Transmission assembly; 801. Drive shaft; 802. Drive sleeve; 9. Support plate; 10. First bevel gear; 11. Second bevel gear; 12. Worm gear ring; 13. Worm. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 - Appendix Figure 5 This application will be described in further detail below.

[0025] Example 1: A gearbox axial clearance adjustment device, please refer to... Figure 1 , Figure 3 and Figure 4 The gearbox includes a gearbox 1. A bearing 2 is mounted on one inner wall of the gearbox via a bearing seat. A bearing cover 3 is fixed on one side of the gearbox 1 at the position corresponding to the bearing 2 by fastening bolts. An adjusting ring 4 is provided inside the bearing cover 3. The outer surface of the middle part of the adjusting ring 4 is a conical surface. Multiple clamping bolts 5 are provided on the outer side of the adjusting ring 4. The multiple clamping bolts 5 penetrate the side wall of the bearing cover 3 radially. The outer surface of the middle part of the clamping bolts 5 is threaded to the inner wall of the bearing cover 3. The multiple clamping bolts 5 are evenly distributed in an array along the circumference of the bearing cover 3. The outer surface of one end of the clamping bolt 5 abuts against the conical surface of the outer surface of the middle part of the adjusting ring 4.

[0026] Please see Figure 2 , Figure 3 and Figure 4 Multiple limiting rods 6 are fixedly installed on one side of the adjusting ring 4, and a limiting ring 7 is fixedly installed on the inner wall of the middle part of the bearing cover 3. The outer surface of the middle part of the limiting rod 6 is inserted into the inner wall of the middle part of the limiting ring 7. By sliding the outer surface of the middle part of the limiting rod 6 in the inner wall of the middle part of the limiting ring 7, the movement trajectory of the adjusting ring 4 can be restricted, the stability of the movement of the adjusting ring 4 can be improved, and the movement deviation of the adjusting ring 4 during axial movement can be avoided.

[0027] Please see Figure 3 , Figure 4 and Figure 5One end of each of the multiple clamping bolts 5 is provided with a first bevel gear 10 via a transmission assembly 8. A second bevel gear 11 is rotatably provided on the outer surface of the middle part of the bearing cover 3. The second bevel gear 11 meshes with the multiple first bevel gears 10. By rotating the second bevel gear 11, the multiple first bevel gears 10 can be driven to rotate synchronously, thereby driving the multiple clamping bolts 5 to rotate synchronously. This allows the multiple clamping bolts 5 to apply a uniform thrust to the conical surface of the adjusting ring 4, so that the adjusting ring 4 is subjected to a balanced axial driving force, avoiding the tilting problem caused by uneven force on the adjusting ring 4.

[0028] Please see Figure 2 , Figure 3 and Figure 5 The transmission assembly 8 includes a transmission shaft 801 and a drive sleeve 802. The transmission shaft 801 is fixedly mounted on one end of the clamping bolt 5. The inner wall of the middle part of the drive sleeve 802 is slidably connected to the outer surface of the middle part of the transmission shaft 801. The inner wall of the middle part of the first bevel gear 10 is fixedly connected to the outer surface of the middle part of the drive sleeve 802. By sliding the inner wall of the middle part of the drive sleeve 802 to the outer surface of the middle part of the transmission shaft 801, it is possible to prevent the clamping bolt 5 from moving during rotation, which would cause the first bevel gear 10 to move and thus prevent the first bevel gear 10 from meshing with the second bevel gear 11. This ensures that the first bevel gear 10 and the second bevel gear 11 are stably meshed during the rotation and parallel movement of the clamping bolt 5.

[0029] Please see Figure 3 , Figure 4 and Figure 5 A support plate 9 is provided on the outer side of the drive sleeve 802. The outer surface of the middle part of the drive sleeve 802 is rotatably disposed in the inner wall of the middle part of the support plate 9. The support plate 9 is fixedly disposed on the outer surface of the middle part of the bearing cover 3 by a fixing plate. The setting of the support plate 9 can provide stable rotation support for the drive sleeve 802, restrict the movement of the drive sleeve 802, and improve the stability when the second bevel gear 11 drives the drive sleeve 802 to rotate through the first bevel gear 10.

[0030] Please see Figure 2 , Figure 4 and Figure 5 The outer surface of the middle part of the drive shaft 801 is polygonal. The shape of the outer surface of the middle part of the drive shaft 801 is adapted to the shape of the inner wall of the middle part of the drive sleeve 802. The cooperation between the drive shaft 801 with the outer surface of the middle part of the polygonal part and the drive sleeve 802 can effectively transmit torque and avoid relative slippage between the drive shaft 801 and the drive sleeve 802, so that the drive sleeve 802 can stably drive the drive shaft 801 to rotate.

[0031] Please see Figure 2 , Figure 4 and Figure 5The end of the clamping bolt 5 near the adjusting ring 4 is hemispherical. The outer surface of the hemispherical end of the clamping bolt 5 is slidably connected to the conical surface of the outer surface of the middle part of the adjusting ring 4. The hemispherical end of the clamping bolt 5 makes the pushing of the clamping bolt 5 onto the conical surface of the adjusting ring 4 smoother during rotation and avoids scratching damage to the conical surface of the adjusting ring 4 during rotation, thus improving the stability of the fit between the clamping bolt 5 and the adjusting ring 4.

[0032] Example 2: A gearbox axial clearance adjustment device, please refer to... Figure 1 , Figure 3 and Figure 4 A worm gear ring 12 is fixedly installed on one side of the second bevel gear 11, and a worm 13 is rotatably installed on one side of the bearing cover 3 via a connecting frame. The worm 13 meshes with the worm gear ring 12. By rotating the worm 13, the second bevel gear 11 can be easily driven to rotate through the worm gear ring 12. Furthermore, due to the self-locking property between the worm 13 and the worm gear ring 12, the second bevel gear 11 can be prevented from rotating on its own after adjustment, thereby preventing the tightening bolt 5 from loosening and ensuring that the tightening bolt 5 can stably tighten the adjusting ring 4.

[0033] The implementation principle of this application embodiment is as follows: When adjusting the axial clearance of bearing 2, the worm 13 is rotated, causing the worm 13 to drive the worm wheel ring 12 to rotate, which in turn causes the worm wheel ring 12 to drive the second bevel gear 11 to rotate. When the second bevel gear 11 rotates, it drives multiple first bevel gears 10 to rotate synchronously. When the multiple first bevel gears 10 rotate, they drive multiple drive sleeves 802 to rotate. The multiple drive sleeves 802, in conjunction with the corresponding drive shafts 801, drive multiple clamping bolts 5 to rotate synchronously. During the rotation, the clamping bolts 5 travel radially through the threaded connection with the inner wall of the bearing cover 3, causing the clamping bolts 5 to move towards the adjusting ring 4. At the same time, the clamping bolts 5 drive the drive shaft 801 to slide within the middle inner wall of the drive sleeve 802. When the hemispherical end of the clamping bolt 5 contacts the conical surface of the adjusting ring 4, the continuous movement of the clamping bolt 5 will push the adjusting ring 4 to move axially through the conical surface of the adjusting ring 4, causing the adjusting ring 4 to push the outer ring of the bearing 2 and adjust the axial clearance of the bearing 2.

Claims

1. A gearbox axial clearance adjustment device, comprising a gearbox (1), characterized in that: A bearing (2) is installed on one side of the inner wall of the gearbox via a bearing seat. A bearing cover (3) is fixed on one side of the gearbox (1) at the position corresponding to the bearing (2) by fastening bolts. An adjusting ring (4) is provided inside the bearing cover (3). The outer surface of the middle part of the adjusting ring (4) is a conical surface. Multiple clamping bolts (5) are provided on the outer side of the adjusting ring (4). The multiple clamping bolts (5) penetrate the side wall of the bearing cover (3) radially. The outer surface of the middle part of the clamping bolts (5) is threaded to the inner wall of the bearing cover (3). The multiple clamping bolts (5) are evenly distributed in an array along the circumference of the bearing cover (3). The outer surface of one end of the clamping bolt (5) abuts against the conical surface of the outer surface of the middle part of the adjusting ring (4).

2. The gearbox axial clearance adjustment device according to claim 1, characterized in that: Multiple limiting rods (6) are fixedly provided on one side of the adjusting ring (4), and a limiting ring (7) is fixedly provided on the inner wall of the middle part of the bearing cover (3). The outer surface of the middle part of the limiting rod (6) is inserted into the inner wall of the middle part of the limiting ring (7).

3. The gearbox axial clearance adjustment device according to claim 1, characterized in that: One end of each of the multiple clamping bolts (5) is provided with a first bevel gear (10) via a transmission assembly (8), and a second bevel gear (11) is rotatably provided on the outer surface of the middle part of the bearing cover (3), and the second bevel gear (11) meshes with the multiple first bevel gears (10).

4. The gearbox axial clearance adjustment device according to claim 3, characterized in that: The transmission assembly (8) includes a transmission shaft (801) and a drive sleeve (802). The transmission shaft (801) is fixedly disposed at one end of the clamping bolt (5). The inner wall of the middle part of the drive sleeve (802) is slidably connected to the outer surface of the middle part of the transmission shaft (801). The inner wall of the middle part of the first bevel gear (10) is fixedly connected to the outer surface of the middle part of the drive sleeve (802).

5. The gearbox axial clearance adjustment device according to claim 4, characterized in that: The drive sleeve (802) is provided with a support plate (9) on its outer side. The outer surface of the middle part of the drive sleeve (802) is rotatably disposed in the inner wall of the middle part of the support plate (9). The support plate (9) is fixedly disposed on the outer surface of the middle part of the bearing cover (3) by a fixing plate.

6. The gearbox axial clearance adjustment device according to claim 4, characterized in that: The outer surface of the middle part of the drive shaft (801) is polygonal, and the shape of the outer surface of the middle part of the drive shaft (801) is adapted to the shape of the inner wall of the middle part of the drive sleeve (802).

7. The gearbox axial clearance adjustment device according to claim 3, characterized in that: A worm gear ring (12) is fixedly provided on one side of the second bevel gear (11), and a worm (13) is rotatably provided on one side of the bearing cover (3) through a connecting frame. The worm (13) meshes with the worm gear ring (12).

8. The gearbox axial clearance adjustment device according to claim 1, characterized in that: The end of the clamping bolt (5) near the adjusting ring (4) is hemispherical, and the outer surface of the hemispherical end of the clamping bolt (5) is slidably connected to the conical surface of the outer surface of the middle part of the adjusting ring (4).

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