Internal spline planet carrier positioning mechanism

Abstract

The utility model relates to the technical field of planet carrier positioning, and discloses an internal spline planet carrier positioning mechanism which comprises a clamping platform, a plurality of first guide grooves are formed in the top of the clamping platform, clamping arms are connected to the inner walls of the first guide grooves in a sliding mode, and guide plates are connected to the two sides of the top of each clamping arm in a sliding mode. The bottom of each guide plate is fixedly connected to the top of the clamping platform, a plurality of sliding rails are fixedly connected to the bottom of the clamping platform, sliding blocks are slidably connected to the outer walls of the sliding rails, a control disc is fixedly connected to the bottoms of the sliding blocks, and a plurality of second guide grooves are formed in the outer wall of the control disc. When the control disc rotates, the clamping arms linearly slide towards the middle under the constraint of the guide grooves and the guide plates to extrude a gear disc at the top of the feeding disc, clamping and positioning of the gear disc are achieved, rapid clamping and positioning of the gear disc are achieved, and the installation and positioning time of the gear disc can be effectively saved.

Description

Technical Field

[0001] This utility model relates to the field of planetary carrier positioning technology, and in particular to an internal spline planetary carrier positioning mechanism. Background Technology

[0002] The planetary carrier is a key component in planetary gear transmissions, serving as the supporting structure for the planetary gears. It consists of three parts: the rim, the web, and the hub. Its function is to support the planetary gears and connect them together, enabling them to revolve around the sun gear while rotating on their own axis, thus achieving power transmission and speed change. During the machining and installation of the planetary carrier, the positioning device ensures that the planetary carrier is accurately positioned during the machining process, guarantees that the dimensional accuracy and geometric tolerances of each part meet the requirements, and improves the machining quality.

[0003] A search revealed Chinese patent publication number CN216371901U, which discloses a high-precision internal spline planetary carrier positioning fixture. The fixture includes a base, support pads and pressure plates for positioning the upper and lower end faces of a workpiece, respectively. An elastic gear disc is fixed on the base. The support pads have through holes, and the lower end of the elastic gear disc is positioned within the through holes of the support pads, which are fixed to the base. The upper end of the elastic gear disc extends beyond the support pads, and a gear plate is located in the middle of the elastic gear disc. The gear plate rests on the internal spline of the workpiece, and a sliding sleeve is fitted onto the upper part of the elastic gear disc. The outer cylindrical surface of the sliding sleeve rests on the internal spline of the workpiece. On the key, the sliding sleeve and pressure plate are pressed by the clamping mechanism; this utility model adopts an elastic gear plate, which does not have the follow-up property caused by disconnection. The elastic gear plate is connected to the internal spline without any gaps, and no foreign objects will enter and affect the accuracy. The positioning is completely by the tooth surface of the elastic gear plate, and the repeatability is high. However, in actual use, the above device guides the planetary carrier into the fixture through the sliding sleeve, then the screws need to be tightened to fix the sliding sleeve, and finally the nut needs to be tightened to fix the planetary carrier. This makes the installation and disassembly of the planetary carrier more cumbersome, which reduces the number of planetary carriers that can be processed per unit time and reduces the production efficiency. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an internal spline planetary carrier positioning mechanism, which aims to improve the problem that the steps for fixing the position of the planetary carrier in the prior art are relatively cumbersome, resulting in reduced processing and production efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an internal spline planetary carrier positioning mechanism, comprising a clamping platform, the top of which is provided with multiple guide grooves, the inner walls of which are slidably connected with clamping arms, the top sides of which are slidably connected with guide plates, the bottoms of which are fixedly connected to the top of the clamping platform, the bottom of which is fixedly connected with multiple slide rails, the outer walls of which are slidably connected with sliders, the bottoms of which are fixedly connected with a control disk, the outer walls of which are provided with multiple guide grooves, the front side of which is provided with a rack, the outer walls of which are meshed with a transmission wheel, the bottom of which is fixedly connected with a brake motor, and the bottom of which is provided with a release mechanism.

[0006] The above technical solution involves: a clamping platform with multiple guide grooves on its top, allowing the clamping arms to slide along its inner wall; each clamping arm is slidably connected to a guide plate on both sides; the bottom of the guide plate is fixed to the top of the clamping platform to ensure directional stability of the clamping arms during movement; multiple slide rails connected to the bottom of the clamping platform, forming a sliding connection between the slide rails and multiple sliders; a control disk fixedly connected to the bottom of the sliders, allowing the control disk to rotate at the bottom of the clamping platform without falling off, relying on the slide rails and sliders; multiple angled guide grooves on the outer wall of the control disk, with the bottom of the clamping arms passing through the guide grooves; when the control disk rotates, the guide grooves press the multiple clamping arms towards the center; during the sliding towards the center, the clamping arms are guided by the guide grooves and guide plates to ensure linear movement, thereby pressing against the outer wall of the gear disk to achieve clamping and positioning; a rack on the front side of the control disk, with teeth meshing with a transmission wheel; a brake motor fixedly connected to the bottom of the transmission wheel; driven by the brake motor, the control disk rotates, thereby achieving clamping and positioning of the gear disk.

[0007] As a further description of the above technical solution:

[0008] The loading and unloading mechanism includes a locking ring, which is located at the top center of the clamping platform. A plurality of limiting blocks are fixedly connected to the inner wall of the locking ring. A feeding tray is slidably connected to the outer wall of the plurality of limiting blocks. A limiting groove is fixedly connected to the outer wall of the feeding tray. The inner wall of the limiting groove matches the outer wall of the limiting block. A telescopic rod is fixedly connected to the bottom of the feeding tray. A fixed base plate is fixedly connected to the bottom of the telescopic rod.

[0009] The above technical solution involves a locking ring located at the top center of the clamping platform, with multiple limiting blocks connected to its inner wall. These limiting blocks are slidably connected to the feeding tray. A limiting groove is formed on the outer wall of the feeding tray, with the inner wall shape matching the outer wall of the limiting block. This ensures the accuracy of the feeding tray during lifting and lowering, preventing deviation and swaying. A telescopic rod is connected to the bottom of the feeding tray, controlling its lifting and lowering. Its bottom is fixedly connected to a fixed base plate, providing a stable support foundation and ensuring sufficient stability and reliability during extension and retraction. When the gear disc needs installation, it is first placed on the feeding tray. Then, the telescopic rod lowers the feeding tray until its top is level with the top of the clamping platform. The clamping and installation operation is then performed. After installation, the telescopic rod lifts the feeding tray, allowing workers to easily remove the installed gear disc.

[0010] As a further description of the above technical solution:

[0011] A protective shell is fixedly connected to the bottom of the clamping platform, and a fixing foot is fixedly connected to the left side of the brake motor. The fixing foot is fixedly connected to the inner wall of the protective shell.

[0012] Through the above technical solution: the protective shell can effectively block external dust and debris, the shape of the fixing feet is consistent with the shape of the inner wall of the protective shell, and they are fixed to the inner wall of the protective shell, providing stable working conditions for the brake motor.

[0013] As a further description of the above technical solution:

[0014] Two limiting strips are fixedly connected to the outer wall of the clamping arm, and a sliding groove is provided on the inner wall of the guide plate.

[0015] The above technical solution matches the slide groove with the limiting strip, allowing the limiting strip to slide in the slide groove, providing precise guidance for the smooth movement of the clamping arm.

[0016] As a further description of the above technical solution:

[0017] A rubber plate is fixedly connected to each adjacent side of the plurality of clamping arms, and a pressure sensor is fixedly connected to the middle of the outer wall of the rubber plate.

[0018] The above technical solution involves multiple clamping arms having rubber plates installed on adjacent sides, which increases the friction between the clamping arms and the gear disk, ensuring that the gear disk will not easily slip off during clamping. In addition, a pressure sensor is connected to the middle of the outer wall of the rubber plate, which can monitor the clamping pressure of the clamping arms on the gear disk in real time.

[0019] As a further description of the above technical solution:

[0020] An indicator light is fixedly connected to the left side of the top rear end of the clamping platform, and a compression mark is fixedly connected to the rear side of the top right end of the clamping platform.

[0021] Through the above technical solution: the indicator light and the pressure sensor are connected through a telecommunication line. Based on the pressure data monitored by the pressure sensor, the operator can be reminded of the squeezing status of the clamping arm on the gear disk. On the rear right side of the top of the clamping platform, there is a squeezing indicator. Its main purpose is to indicate the range of squeezing degree when the clamping arm is clamping the gear disk. The operator can use this to quickly judge whether the clamping force is appropriate.

[0022] As a further description of the above technical solution:

[0023] Each of the clamping arms has a limiting block 2 fixedly connected to its bottom, and the outer wall of the bottom of the clamping arm passes through the guide groove 1 and is slidably connected to the inner wall of the guide groove 2.

[0024] Through the above technical solution, Block 2 can effectively prevent the clamping arm from loosening or deviating from the predetermined track during movement, ensuring the stability and accuracy of the clamping arm's movement.

[0025] As a further description of the above technical solution:

[0026] A gear disk is provided on the top of the feeding tray, and an anti-slip pad is fixedly connected to the bottom of the fixed base plate.

[0027] Through the above technical solution, the anti-slip pad is used to prevent the entire clamping device from sliding or shifting during operation due to external forces, thus ensuring the smooth progress and efficient completion of the workflow.

[0028] This utility model has the following beneficial effects:

[0029] 1. In this utility model, starting the brake motor causes the transmission wheel to rotate, driving the control disk to rotate along the path defined by the slide rail and the slider. When the control disk rotates, the clamping arm slides linearly towards the center under the constraint of the guide groove and the guide plate, squeezing the gear disk at the top of the feeding disk to achieve clamping and positioning of the gear disk. This achieves rapid clamping and positioning of the gear disk, effectively saving the time of gear disk installation and positioning, improving production efficiency, and ensuring the accuracy of subsequent processing.

[0030] 2. In this utility model, the cooperation between the locking ring and the limiting block ensures the accuracy and stability of the feeding plate lifting and lowering, can accurately position the gear plate, and the telescopic rod can flexibly control the height of the feeding plate, making it convenient for workers to pick up the installed gear plate and place the gear plate to be processed, simplifying the operation process, improving work efficiency, making the entire gear plate processing process more convenient and efficient, and reducing the difficulty and time cost of manual operation. Attached Figure Description

[0031] Figure 1 This is a perspective view of an internal spline planetary carrier positioning mechanism proposed in this utility model;

[0032] Figure 2 This is a schematic diagram of the slide rail structure of an internal spline planetary carrier positioning mechanism proposed in this utility model;

[0033] Figure 3 This is a schematic diagram of the slider structure of an internal spline planetary carrier positioning mechanism proposed in this utility model;

[0034] Figure 4 This is a schematic diagram of the placement and retrieval mechanism of the internal spline planetary carrier positioning mechanism proposed in this utility model;

[0035] Figure 5 This is a schematic diagram of the locking ring structure of an internal spline planetary carrier positioning mechanism proposed in this utility model.

[0036] Legend:

[0037] 1. Clamping platform; 2. Loading and unloading mechanism; 201. Feeding tray; 202. Limiting block one; 203. Limiting groove; 204. Telescopic rod; 205. Fixed base plate; 206. Engaging ring; 3. Guide groove one; 4. Guide plate; 5. Clamping arm; 6. Control panel; 7. Guide groove two; 8. Slide rail; 9. Slider; 10. Rack; 11. Gear disk; 12. Brake motor; 13. Transmission wheel; 14. Fixed foot; 15. Protective shell; 16. Limiting strip; 17. Slide groove; 18. Pressure sensor; 19. Rubber plate; 20. Indicator light; 21. Limiting block two; 22. Extrusion mark; 23. Anti-slip mat. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] Reference Figure 1 , Figure 2 and Figure 3An embodiment of this utility model provides: an internal spline planetary carrier positioning mechanism, including a clamping platform 1, a plurality of guide grooves 3 are provided on the top of the clamping platform 1, clamping arms 5 are slidably connected to the inner walls of the plurality of guide grooves 3, guide plates 4 are slidably connected to the top sides of the clamping arms 5, the bottom of the plurality of guide plates 4 is fixedly connected to the top of the clamping platform 1, a plurality of slide rails 8 are fixedly connected to the bottom of the clamping platform 1, sliders 9 are slidably connected to the outer walls of the plurality of slide rails 8, a control disk 6 is fixedly connected to the bottom of the plurality of sliders 9, a plurality of guide grooves 7 are provided on the outer wall of the control disk 6, a rack 10 is provided on the front side of the control disk 6, a transmission wheel 13 is meshed with the outer wall of the rack 10, a brake motor 12 is fixedly connected to the bottom of the transmission wheel 13, and a release mechanism 2 is provided at the bottom of the clamping platform 1;

[0040] Specifically, the top of the clamping platform 1 has multiple guide grooves 3, which allow the clamping arms 5 to slide on their inner walls. Guide plates 4 are slidably connected to both sides of each clamping arm 5. The bottom of the guide plates 4 is fixedly connected to the top of the clamping platform 1 to ensure the clamping arms 5 maintain a stable direction during movement. At the bottom of the clamping platform 1, multiple slide rails 8 are connected, forming a sliding connection with multiple sliders 9. A control disk 6 is fixedly connected to the bottom of each slider 9, allowing the control disk 6 to rotate on the bottom of the clamping platform 1 using the slide rails 8 and sliders 9 without falling off. The outer wall of the control disk 6 has multiple angled... The inclined guide groove 2 7 has its inner wall penetrated by the bottom of the clamping arm 5. When the control disk 6 is rotated, the guide groove 2 7 can squeeze multiple clamping arms 5 towards the center. During the process of sliding towards the center, the multiple clamping arms 5 are guided by the guide groove 1 3 and the guide plate 4 to ensure that they move in a straight line and squeeze the outer wall of the gear disk 11 to achieve clamping and positioning. A rack 10 is provided on the front side of the control disk 6. The tooth shape of the rack 10 is meshed with the transmission wheel 13. The bottom of the transmission wheel 13 is fixedly connected to the brake motor 12. Driven by the brake motor 12, the control disk 6 can rotate, thereby clamping and positioning the gear disk 11.

[0041] Reference Figure 1 , Figure 4 and Figure 5 The loading and unloading mechanism 2 includes a locking ring 206, which is located at the top center of the clamping platform 1. Multiple limiting blocks 202 are fixedly connected to the inner wall of the locking ring 206. A feeding tray 201 is slidably connected to the outer wall of the multiple limiting blocks 202. A limiting groove 203 is fixedly connected to the outer wall of the feeding tray 201. The inner wall of the limiting groove 203 matches the outer wall of the limiting block 202. A telescopic rod 204 is fixedly connected to the bottom of the feeding tray 201. A fixed base plate 205 is fixedly connected to the bottom of the telescopic rod 204.

[0042] Specifically, the locking ring 206 is located at the top center of the clamping platform 1, and its inner wall is connected to multiple limiting blocks 202. The limiting blocks 202 are slidably connected to the feeding tray 201. The outer wall of the feeding tray 201 is fixedly connected to a carefully designed limiting groove 203. The inner wall shape of the limiting groove 203 matches the outer wall of the limiting blocks 202, ensuring the stability and accuracy of the feeding tray 201 during the lifting process and preventing it from deviating or shaking. At the bottom of the feeding tray 201, a telescopic rod 204 is connected, which can control the lifting and lowering of the feeding tray 201. The bottom of the telescopic rod 204 is fixedly connected to the fixed base plate 205. The fixed base plate 205 provides a stable support foundation for the telescopic rod 204, ensuring that the telescopic rod 204 maintains sufficient stability and reliability when it is extended or retracted. When the gear disk 11 needs to be installed, it is placed on the feeding plate 201. Then the telescopic rod 204 controls the feeding plate 201 to descend, so that the top of the feeding plate 201 is at the same height as the top of the clamping platform 1. After clamping and installation, the telescopic rod 204 drives the feeding plate 201 to rise, making it easy for the staff to remove the installed gear disk 11.

[0043] Reference Figure 1 and Figure 2 A protective shell 15 is fixedly connected to the bottom of the clamping platform 1. A fixed foot 14 is fixedly connected to the left side of the brake motor 12. The fixed foot 14 is fixedly connected to the inner wall of the protective shell 15. Two limit strips 16 are fixedly connected to the outer wall of the clamping arm 5. A sliding groove 17 is opened on the inner wall of the guide plate 4. A rubber plate 19 is fixedly connected to each adjacent side of the multiple clamping arms 5. A pressure sensor 18 is fixedly connected to the middle of the outer wall of the rubber plate 19.

[0044] Specifically, the protective shell 15 effectively prevents external dust and debris from corroding and interfering with the internal components. The fixed foot 14 has the same shape as the inner wall of the protective shell 15 and is fixedly connected to the inner wall of the protective shell 15, providing a stable mounting base for the brake motor 12. Two limiting strips 16 are fixedly connected to the outer wall of the clamping arm 5. The inner wall of the guide plate 4 is provided with a sliding groove 17, which matches the limiting strip 16, allowing the limiting strip 16 to slide smoothly in the sliding groove 17, providing guidance for the smooth movement of the clamping arm 5. Rubber plates 19 are connected to adjacent sides of multiple clamping arms 5, which can effectively increase the friction between the clamping arm and the gear disk 11, ensuring that the gear disk 11 will not easily slip during the clamping process. A pressure sensor 18 is connected to the middle of the outer wall of the rubber plate 19, which can monitor the clamping pressure of the clamping arm 5 on the inner gear disk 11 in real time.

[0045] Reference Figure 1 and Figure 3An indicator light 20 is fixedly connected to the left side of the top rear end of the clamping platform 1, and an extrusion mark 22 is fixedly connected to the rear side of the top right end of the clamping platform 1. Limiting blocks 21 are fixedly connected to the bottom of multiple clamping arms 5. The bottom outer wall of the clamping arm 5 passes through the guide groove 3 and is slidably connected to the inner wall of the guide groove 7. A gear disk 11 is provided on the top of the feeding plate 201, and an anti-slip pad 23 is fixedly connected to the bottom of the fixed base plate 205.

[0046] Specifically, indicator light 20 is electrically connected to pressure sensor 18 to visually remind the operator of the squeezing operation of clamping arm 5 on gear disk 11. On the rear right side of the top of clamping platform 1, there is a squeezing indicator 22 to indicate the squeezing range of clamping arm 5 when clamping gear disk 11. Limiting block 21 is fixedly connected to the bottom of multiple clamping arms 5. Limiting block 21 is used to prevent the clamping arms 5 from loosening when moving. Anti-slip pad 23 is fixedly connected to the bottom of fixed base plate 205 to prevent the entire clamping device from sliding and displacing due to external force during operation, providing a solid foundation for the stable operation of the equipment.

[0047] Working principle: When the brake motor 12 is started, the brake motor 12 drives the transmission wheel 13, which is fixedly connected to it, to rotate. Since the transmission wheel 13 is meshed with the rack 10 on the front side of the control disk 6, the rotation of the transmission wheel 13 will drive the control disk 6 to rotate along the path defined by the slide rail 8 and the slider 9. During the rotation of the control disk 6, the inclined guide groove 2 7 on its outer wall will exert a force on the bottom of the clamping arm 5 that passes through it. Because the guide groove 2 7 is inclined, as the control disk 6 rotates, this force will cause multiple clamping arms 5 to slide straight towards the center along the inner wall of the guide groove 3 and under the constraint of the guide plate 4. During this process, multiple clamping arms 5 gradually approach and squeeze the outer wall of the gear disk 11 placed on the top of the feeding disk 201. Through the friction and pressure between multiple clamping arms 5 and gear disk 11, the gear disk 11 is clamped and positioned, thereby stably fixing the gear disk 11 in the installation position and ensuring that subsequent processing can be carried out accurately.

[0048] Furthermore, the locking ring 206 is located at the top center of the clamping platform 1, and the multiple limiting blocks 202 connected to its inner wall provide precise guidance for the movement of the feeding plate 201. The sliding connection between the feeding plate 201 and the limiting blocks 202 ensures that the feeding plate 201 can only move vertically, ensuring that the feeding plate 201 can transport the gear plate 11 to the predetermined position. The telescopic rod 204 can control the lifting height of the feeding plate 201 according to actual working needs. When the gear plate 11 needs to be installed, the gear plate 11 is first placed on the feeding plate 201 at the higher position. Then the telescopic rod 204 starts working, and through the retraction action, it drives the feeding plate 201 to slowly descend until the top of the feeding plate 201 is at the same height as the top of the clamping platform 1. At this time, the control plate 6 located at the bottom of the clamping platform 1, driven by the brake motor 12, drives the clamping arm 5 to clamp the gear plate 11 for subsequent installation operations. After the installation is completed, the telescopic rod 204 extends in the opposite direction, pushing the feeding plate 201 to rise, so that the installed gear plate 11 is raised to a height that is convenient for the staff to operate, making it easy for the staff to remove it, thus completing the entire installation and removal process of the gear plate 11.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning mechanism for an internal spline planetary carrier, comprising a clamping platform (1), characterized in that: The clamping platform (1) has multiple guide grooves (3) on its top. Clamping arms (5) are slidably connected to the inner walls of the multiple guide grooves (3). Guide plates (4) are slidably connected to the top sides of the clamping arms (5). The bottoms of the multiple guide plates (4) are fixedly connected to the top of the clamping platform (1). Multiple slide rails (8) are fixedly connected to the bottom of the clamping platform (1). Slider (9) is slidably connected to the outer walls of the multiple slide rails (8). A control disk (6) is fixedly connected to the bottom of the multiple sliders (9). Multiple guide grooves (7) are opened on the outer wall of the control disk (6). A rack (10) is opened on the front side of the control disk (6). A transmission wheel (13) is meshed with the outer wall of the rack (10). A brake motor (12) is fixedly connected to the bottom of the transmission wheel (13). A release mechanism (2) is provided at the bottom of the clamping platform (1).

2. The planetary carrier positioning mechanism with internal spline according to claim 1, characterized in that: The release mechanism (2) includes a locking ring (206), which is located at the top center of the clamping platform (1). The inner wall of the locking ring (206) is fixedly connected to a plurality of limiting blocks (202). The outer wall of the plurality of limiting blocks (202) is slidably connected to a feeding tray (201). The outer wall of the feeding tray (201) is fixedly connected to a limiting groove (203). The inner wall of the limiting groove (203) matches the outer wall of the limiting block (202). The bottom of the feeding tray (201) is fixedly connected to a telescopic rod (204), and the bottom of the telescopic rod (204) is fixedly connected to a fixed base plate (205).

3. The planetary carrier positioning mechanism with internal spline according to claim 1, characterized in that: The bottom of the clamping platform (1) is fixedly connected to a protective shell (15), and the left side of the brake motor (12) is fixedly connected to a fixing foot (14), which is fixedly connected to the inner wall of the protective shell (15).

4. The planetary carrier positioning mechanism with internal spline according to claim 1, characterized in that: The outer wall of the clamping arm (5) is fixedly connected with two limiting strips (16), and the inner wall of the guide plate (4) is provided with a sliding groove (17).

5. The planetary carrier positioning mechanism with internal spline according to claim 1, characterized in that: A rubber plate (19) is fixedly connected to each adjacent side of the multiple clamping arms (5), and a pressure sensor (18) is fixedly connected to the middle of the outer wall of the rubber plate (19).

6. The planetary carrier positioning mechanism with internal spline according to claim 1, characterized in that: An indicator light (20) is fixedly connected to the left side of the top rear end of the clamping platform (1), and a compression mark (22) is fixedly connected to the rear side of the top right end of the clamping platform (1).

7. The internal spline planetary carrier positioning mechanism according to claim 1, characterized in that: The bottom of each of the clamping arms (5) is fixedly connected to a limiting block two (21), and the bottom outer wall of the clamping arm (5) passes through the guide groove one (3) and is slidably connected to the inner wall of the guide groove two (7).

8. The internal spline planetary carrier positioning mechanism according to claim 2, characterized in that: The top of the feeding tray (201) is provided with a gear disk (11), and the bottom of the fixed base plate (205) is fixedly connected with an anti-slip pad (23).

Images