A large torque spindle box drive mechanism
By introducing positioning blocks, snap rings, and transparent glass into the high-torque spindle box transmission mechanism, the problem of inconvenient maintenance caused by easy wear of the transmission structure is solved, and the stable connection of the transmission components and the convenience of safety observation of the device are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI XUTIAN INTELLIGENT EQUIPMENT CO LTD
- Filing Date
- 2025-09-05
- Publication Date
- 2026-06-16
Smart Images

Figure CN224364347U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of spindle box technology, and specifically relates to a high-torque spindle box transmission mechanism. Background Technology
[0002] The high-torque spindle box transmission mechanism adopts a multi-stage gear transmission design. The motor drives the drive shaft, and speed changes are achieved via double gears or sliding gears on the intermediate shaft, ultimately transmitting torque to the spindle. Its core advantages lie in its compact structure, high transmission efficiency, ability to withstand high torque, and stable speed changes. It is widely used in heavy-duty machine tools, machining centers, and other applications to meet the demands of high-load, high-precision machining.
[0003] Chinese Patent No. CN208146925U discloses a spindle box transmission device, including a spindle box, a spindle, and a motor pulley. The motor pulley is mounted on the spindle box, and the spindle extends out of the spindle box. A synchronous pulley is mounted on the spindle via a flange. A rear end cover of the spindle box is installed between the spindle and the spindle box and is fixed to the spindle box. A bearing is installed between the flange, the synchronous pulley, and the end cover of the synchronous pulley, and the outer ring of the bearing is connected to the synchronous pulley.
[0004] However, the above structure still has some shortcomings. When using the spindle box, its internal transmission structure will operate continuously. After long-term use, it will inevitably suffer some wear and tear, and thus need to be disassembled and maintained regularly. Because it is not easy to disassemble and assemble the transmission structure, the subsequent maintenance efficiency of the transmission structure is reduced, which is very inconvenient. Utility Model Content
[0005] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a high-torque spindle box transmission mechanism to solve the problems mentioned in the background art.
[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0007] A high-torque spindle box transmission mechanism includes a spindle box body. A fixing plate is threadedly connected to one side of the spindle box body, and a drive motor is mounted on one side of the fixing plate. A connecting plate is provided on the inner wall of the spindle box body. One side of the connecting plate is mated with the rotating shaft of the drive motor. A docking shaft is provided on the other side of the connecting plate. A transmission component is engaged on the other side of the docking shaft. A first positioning groove is formed on the other side of the docking shaft. A second positioning groove is formed on the inner wall of the first positioning groove. A circular groove is formed on the inner side of the first positioning groove. A first positioning block that matches the first positioning groove is fixedly connected to one side of the transmission component. A second positioning block that matches the second positioning groove is fixedly connected to the outer side of the first positioning block. The second positioning block is engaged in the circular groove.
[0008] As a preferred technical solution, a retaining ring that matches the second positioning block is installed on the inner side of the circular groove, and the other side of the second positioning block is engaged with one side of the retaining ring. The second positioning block is engaged with the inner side of the circular groove by the retaining ring.
[0009] As a preferred technical solution, a protective plate is threadedly connected to the front side of the spindle housing. A rectangular opening is provided on the front side of the protective plate, and the rectangular opening communicates with the inside of the spindle housing. A transparent glass is fixedly connected to the inside of the rectangular opening, and the transparent glass covers the inside of the rectangular opening.
[0010] As a preferred technical solution, a slot is provided on the front side of the spindle housing, and a locking block that matches the slot is fixedly connected to the rear side of the protective plate. The locking block is engaged with the inside of the slot, and a handle is fixedly connected to the front side of the protective plate. The handle has an arc-shaped corner.
[0011] As a preferred technical solution, the front side of the protective plate is provided with a second screw hole, the second screw hole extends into the spindle housing, the inner side of the second screw hole is threaded with a second bolt, the rear side of the second bolt is threaded into the spindle housing through the second screw hole, and the protective plate is threaded to the front side of the spindle housing through the second screw hole and the second bolt.
[0012] As a preferred technical solution, a first screw hole is provided on one side of the fixing plate, the first screw hole extends into the spindle housing, a first bolt is threaded to the inner side of the first screw hole, and the other side of the first bolt is threaded to the inside of the spindle housing through the first screw hole. The fixing plate is threaded to one side of the spindle housing through the first bolt and the first screw hole.
[0013] As a preferred technical solution, a mounting plate is fixedly connected to the bottom end of the spindle housing, the mounting plate covers the bottom end of the spindle housing, a positioning hole is opened at the top end of the mounting plate, the positioning hole is opened on the four sides near the corner of the top end of the mounting plate, a protective door is hinged to the front side of the spindle housing, and a door handle is installed on the front side of the protective door.
[0014] In summary, the present invention has the following main advantages:
[0015] Firstly, during use, the drive motor can rotate the connecting plate, which in turn can rotate the docking shaft, thereby driving the transmission component. The first positioning block can send the second positioning block into the circular groove. By adjusting the second positioning block to an angle that is not directly opposite to the second positioning groove, the position of the transmission component can be effectively locked to prevent it from falling off. When the transmission component needs to be disassembled later, the second positioning block is first adjusted to an angle that corresponds to the second positioning groove, and then the first positioning block can be pulled out directly. This facilitates the quick disassembly and assembly of the transmission component and also effectively improves the efficiency of subsequent maintenance of the transmission component.
[0016] Secondly, the presence of the locking block allows for pre-definition positioning of the protective plate to prevent displacement. It also ensures more precise tightening of the second bolt, enhancing the stability of the protective plate's position. The rectangular opening allows users to directly inspect the inside of the spindle housing through the transparent glass without opening the protective plate, facilitating constant monitoring of the internal drive status and improving device safety. To remove the protective plate, simply unscrew the second bolt and then pull out the locking block. This also facilitates subsequent cleaning of the spindle housing's interior. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the inner structure of the spindle box of this utility model;
[0019] Figure 3 This is a schematic diagram of the docking shaft structure of this utility model;
[0020] Figure 4 This is a utility model Figure 3 A magnified structural diagram of part A;
[0021] Figure 5 This is a schematic diagram of the transmission component structure of this utility model;
[0022] Figure 6 This is a schematic diagram of the protective plate structure of this utility model.
[0023] Reference numerals: 1. Spindle housing; 2. Mounting plate; 3. Positioning hole; 4. Fixing plate; 5. First screw hole; 6. First bolt; 7. Drive motor; 8. Connecting plate; 9. Connecting shaft; 10. First positioning groove; 11. Second positioning groove; 12. Circular groove; 13. Snap ring; 14. Transmission component; 15. First positioning block; 16. Second positioning block; 17. Slot; 18. Protective plate; 19. Locking block; 20. Handle; 21. Second screw hole; 22. Second bolt; 23. Rectangular opening; 24. Transparent glass; 25. Protective door; 26. Door handle. Detailed Implementation
[0024] Example
[0025] refer to Figures 1 to 6 This embodiment of a high-torque spindle box transmission mechanism includes a spindle box body 1. A fixing plate 4 is threadedly connected to one side of the spindle box body 1, and a drive motor 7 is mounted on one side of the fixing plate 4. A connecting plate 8 is provided on the inner wall of the spindle box body 1. One side of the connecting plate 8 is connected to the rotating shaft of the drive motor 7. A docking shaft 9 is provided on the other side of the connecting plate 8. A transmission component 14 is snapped onto the other side of the docking shaft 9. A first positioning groove 10 is formed on the other side of the docking shaft 9. A second positioning groove 11 is formed on the inner wall of the first positioning groove 10. A circular groove 12 is formed on the inner side of the first positioning groove 10. A first positioning block 15 that matches the first positioning groove 10 is fixedly connected to one side of the transmission component 14. A second positioning block 14 that matches the first positioning groove 10 is fixedly connected to the outer side of the first positioning block 15. The second positioning block 16 matches the groove 11 and is engaged in the circular groove 12. In use, to improve the stability of the position of the transmission component 14, the second positioning block 16 can be sent into the circular groove 12 by the first positioning block 15. The second positioning block 16 is adjusted to an angle that is not corresponding to the second positioning groove 11, so that the position of the transmission component 14 can be effectively engaged to prevent the transmission component 14 from falling off. When the transmission component 14 needs to be disassembled later, the second positioning block 16 is first adjusted to an angle corresponding to the second positioning groove 11, and then the first positioning block 15 can be directly pulled out. This can facilitate the quick disassembly and assembly of the transmission component 14 and also effectively improve the subsequent maintenance efficiency of the transmission component 14.
[0026] refer to Figures 1 to 5 A retaining ring 13 matching the second positioning block 16 is installed on the inner side of the circular groove 12. The other side of the second positioning block 16 is engaged with one side of the retaining ring 13. The second positioning block 16 is engaged with the inner side of the circular groove 12 through the retaining ring 13. Due to the presence of the retaining ring 13, the engagement of the retaining ring 13 can limit the position of the second positioning block 16 a second time, thereby further improving the stability of the engagement of the second positioning block 16 and also effectively improving the stability of the engagement of the transmission component 14.
[0027] refer to Figures 1 to 6A protective plate 18 is threadedly connected to the front side of the spindle housing 1. A rectangular opening 23 is formed on the front side of the protective plate 18, communicating with the inside of the spindle housing 1. A transparent glass 24 is fixedly connected to the inside of the rectangular opening 23, covering the inside of the rectangular opening 23. A slot 17 is formed on the front side of the spindle housing 1. A matching locking block 19 is fixedly connected to the rear side of the protective plate 18, engaging with the inside of the slot 17. A handle 20 is fixedly connected to the front side of the protective plate 18, with rounded corners. A second screw hole 21 is formed on the front side of the protective plate 18, extending into the interior of the spindle housing 1. A second bolt 22 is threadedly connected to the inside of the second screw hole 21, with the rear side of the second bolt 22 threaded into the interior of the spindle housing 1 through the second screw hole 21. The protective plate 18 is threaded to the front of the spindle housing 1 through the second screw hole 21 and the second bolt 22. Due to the presence of the locking block 19, the locking block 19 can limit the position of the protective plate 18 in advance to prevent the protective plate 18 from shifting. At the same time, it can also make the second bolt 22 screwed in more accurately to improve the stability of the protective plate 18. Due to the opening of the rectangular opening 23, the user can directly view the inside of the spindle housing 1 through the transparent glass 24 without opening the protective plate 18. This allows the user to observe the internal drive status of the spindle housing 1 at all times, thereby improving the safety of the device. When the protective plate 18 needs to be removed, the second bolt 22 is unscrewed first, and then the locking block 19 is pulled out. This also facilitates the user to clean the inside of the spindle housing 1 later.
[0028] refer to Figure 1 The fixing plate 4 has a first screw hole 5 on one side, which extends into the spindle housing 1. A first bolt 6 is threaded into the inner side of the first screw hole 5. The other side of the first bolt 6 is threaded into the spindle housing 1 through the first screw hole 5. The fixing plate 4 is threaded into the spindle housing 1 through the first bolt 6 and the first screw hole 5. Due to the presence of the first bolt 6, the screwing in of the first bolt 6 can effectively limit the position of the fixing plate 4 to prevent the fixing plate 4 from shifting. When the fixing plate 4 needs to be removed later, the first bolt 6 can be unscrewed. It also facilitates the user to maintain the structure of the drive motor 7 later.
[0029] refer to Figure 1 A mounting plate 2 is fixedly connected to the bottom of the spindle housing 1, covering the bottom of the spindle housing 1. A positioning hole 3 is provided at the top of the mounting plate 2, located on the four sides near the corners of the top of the mounting plate 2. A protective door 25 is hinged to the front of the spindle housing 1, and a door handle 26 is installed on the front of the protective door 25. Due to the positioning hole 3, the user can use a positioning component that matches the positioning hole 3 to limit the position of the mounting plate 2, thereby fixing the position of the entire device and improving the stability of the entire device.
[0030] Operating principle and advantages: During use, to improve the stability of the fixed position of the transmission component 14, the second positioning block 16 can be inserted into the circular groove 12 via the first positioning block 15. The second positioning block 16 is adjusted to a non-corresponding angle with the second positioning groove 11, thus effectively locking the transmission component 14 in place to prevent it from falling off. When disassembling the transmission component 14 later, the second positioning block 16 is first adjusted to a corresponding angle with the second positioning groove 11, and then the first positioning block 15 can be directly pulled out. This facilitates quick disassembly and assembly of the transmission component 14 and effectively improves the subsequent maintenance efficiency. Due to the presence of the retaining spring 13, the locking action of the retaining spring 13 further restricts the position of the second positioning block 16, thereby improving the stability of the locking action of the second positioning block 16 and effectively enhancing the stability of the locking action of the transmission component 14. Due to the presence of the retaining block 19, the insertion of the retaining block 19... The position of the protective plate 18 can be predetermined to prevent displacement of the protective plate 18. It also allows the second bolt 22 to be screwed in more precisely, thereby improving the stability of the protective plate 18. Due to the opening of the rectangular opening 23, the user can directly view the inside of the spindle housing 1 through the transparent glass 24 without opening the protective plate 18. This facilitates the user's constant observation of the internal drive status of the spindle housing 1, thereby improving the safety of the device. When the protective plate 18 needs to be removed, the second bolt 22 is unscrewed first, and then the locking block 19 is pulled out. This also facilitates the user's later cleaning of the inside of the spindle housing 1. Due to the presence of the first bolt 6, the screwing in of the first bolt 6 can effectively limit the position of the fixing plate 4 to prevent displacement of the fixing plate 4. When the fixing plate 4 needs to be removed later, the first bolt 6 is unscrewed. This also facilitates the user's later maintenance of the drive motor 7 structure.
Claims
1. A high-torque spindle box transmission mechanism, comprising a spindle box body (1), characterized in that: A fixing plate (4) is threadedly connected to one side of the spindle housing (1). A drive motor (7) is installed on one side of the fixing plate (4). A connecting plate (8) is provided on the inner wall of the spindle housing (1). One side of the connecting plate (8) is connected to the rotating shaft of the drive motor (7). A docking shaft (9) is provided on the other side of the connecting plate (8). A transmission component (14) is snapped onto the other side of the docking shaft (9). A first positioning groove (10) is opened on the other side of the docking shaft (9). A second positioning groove (11) is opened on the inner wall of the first positioning groove (10). A circular groove (12) is opened on the inner side of the first positioning groove (10). A first positioning block (15) matching the first positioning groove (10) is fixedly connected to one side of the transmission component (14). A second positioning block (16) matching the second positioning groove (11) is fixedly connected to the outer side of the first positioning block (15). The second positioning block (16) is snapped into the circular groove (12).
2. The high-torque spindle box transmission mechanism according to claim 1, characterized in that: A retaining ring (13) matching the second positioning block (16) is installed on the inner side of the circular groove (12). The other side of the second positioning block (16) is engaged with one side of the retaining ring (13). The second positioning block (16) is engaged with the inner side of the circular groove (12) by the retaining ring (13).
3. The high-torque spindle box transmission mechanism according to claim 1, characterized in that: The front side of the spindle housing (1) is threaded with a protective plate (18). The front side of the protective plate (18) has a rectangular opening (23). The rectangular opening (23) communicates with the inside of the spindle housing (1). A transparent glass (24) is fixedly connected to the inside of the rectangular opening (23). The transparent glass (24) covers the inside of the rectangular opening (23).
4. A high-torque spindle box transmission mechanism according to claim 3, characterized in that: The front side of the spindle housing (1) is provided with a slot (17), and the rear side of the protective plate (18) is fixedly connected with a locking block (19) that matches the slot (17). The locking block (19) is engaged with the inside of the slot (17). The front side of the protective plate (18) is fixedly connected with a handle (20), and the corner of the handle (20) is arc-shaped.
5. A high-torque spindle box transmission mechanism according to claim 3, characterized in that: The protective plate (18) has a second screw hole (21) on its front side. The second screw hole (21) extends into the spindle housing (1). A second bolt (22) is threaded into the inner side of the second screw hole (21). The rear side of the second bolt (22) is threaded into the spindle housing (1) through the second screw hole (21). The protective plate (18) is threaded into the front side of the spindle housing (1) through the second screw hole (21) and the second bolt (22).
6. The high-torque spindle box transmission mechanism according to claim 1, characterized in that: The fixing plate (4) has a first screw hole (5) on one side, which extends into the spindle housing (1). A first bolt (6) is threaded into the inner side of the first screw hole (5). The other side of the first bolt (6) is threaded into the spindle housing (1) through the first screw hole (5). The fixing plate (4) is threaded into the spindle housing (1) through the first bolt (6) and the first screw hole (5).
7. A high-torque spindle box transmission mechanism according to claim 1, characterized in that: The bottom end of the spindle housing (1) is fixedly connected to a mounting plate (2), which covers the bottom end of the spindle housing (1). The top end of the mounting plate (2) is provided with a positioning hole (3), which is located on the four sides of the top end of the mounting plate (2) near the corner. The front side of the spindle housing (1) is hinged with a protective door (25), and a door handle (26) is installed on the front side of the protective door (25).