A wear resistance testing device for grinding wheels

Abstract

The invention discloses a device for detecting the wear resistance of a grinding wheel, which relates to the technical field of grinding wheel manufacturing. The device comprises four stations, namely, a loading station a, a fixing station b, a rotating station c and a unloading station d, and also comprises a main frame: comprising a mounting table arranged on the main frame, and a fixing table is fixedly mounted on the surface of the mounting table; a supporting device comprises four T-shaped turntables mounted on the fixing table, and a grinding wheel is placed on the surface of the T-shaped turntable; and further comprises a plurality of pressing blocks mounted on the fixing table; the thickness of the grinding wheel after loss per unit time is measured at the unloading station d through the action of a measuring mechanism, and the thickness at the loading station a and the unloading station d are subtracted through an external computer device, so as to obtain the loss amount of the grinding wheel per unit time, and at the same time, the grinding wheel is unloaded through an external grabbing device, and then a new grinding wheel loading operation is performed at the loading station a, so as to achieve the purpose of automatic cycle detection and improving detection efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of grinding wheel manufacturing, in particular to a wear resistance detection device for a grinding wheel. Background Art

[0002] At present, with the development of industry, the use of grinding wheels is becoming more and more common. In the process of processing metal materials, grinding wheels are needed for cutting or grinding operations. Therefore, grinding wheels are consumables in the metal processing process. Long-term use will accelerate the consumption of grinding wheels. Grinding wheels need to be replaced every once in a while to ensure the grinding quality of the processed parts.

[0003] At present, when testing the grinding wheel, due to the different materials of the grinding wheel, the wear resistance of different grinding wheels is also different. At present, the grinding wheel is manually fixed on the semi-automatic equipment, and then the grinding wheel is rotated and the detection block is used for grinding per unit time, and then the thickness of the grinding wheel grinding position per unit time is measured to obtain the grinding wheel loss per unit time. However, this operation method is very inefficient during testing and requires manual installation and removal of the grinding wheel, which is cumbersome and wastes labor.

[0004] Based on this, the present invention designs a wear resistance detection device for a grinding wheel to solve the above problems. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a device for detecting the wear resistance of a grinding wheel, aiming to solve the technical problems existing in the prior art mentioned in the background technology.

[0006] The embodiment of the present invention is implemented as follows: a wear resistance detection device for a grinding wheel, the device includes four stations: a loading station a, a fixed station b, a rotating station c, and a unloading station d, and also includes:

[0007] Main frame: including a mounting platform arranged on the main frame, and a fixing platform is fixedly installed on the surface of the mounting platform;

[0008] Support mechanism: comprising four T-shaped turntables mounted on a fixed table, a grinding wheel is placed on the surface of the T-shaped turntable, and also comprising a plurality of pressing blocks mounted on the fixed table;

[0009] Fixing mechanism: used to cooperate with the slide mechanism to drive the clamping block to fix and limit the grinding wheel;

[0010] Rotation mechanism: used to drive the grinding wheel to rotate;

[0011] Measuring mechanism: used to measure the thickness of the grinding wheel;

[0012] Driving mechanism: used to drive the grinding wheel to revolve.

[0013] Furthermore, the fixing mechanism includes four step pull rods installed on the fixed platform, a linkage rod is fixedly installed on the surface of each step pull rod, a plurality of arc grooves are provided on the surface of the linkage rod, the inner wall of each arc groove is in contact with the slide rod, the slide rod is fixedly installed on the surface of the clamping block, a contact rod is fixedly installed on the surface of the linkage rod, a spiral groove and a vertical groove connected end to end are provided on the inner wall of the T-shaped turntable, the movement trajectory of the contact rod passes through the spiral groove and the vertical groove, a rotating ring is rotatably connected to the linkage rod, a compression spring is fixedly installed on the surface of the rotating ring, the end of the compression spring away from the rotating ring is connected to the moving slide cylinder, the clamping block is slidably connected to the moving slide cylinder, and the surface of the moving slide cylinder is connected to the inner wall of the T-shaped turntable through a reset spring.

[0014] Furthermore, the slide mechanism includes a tension rod slidably connected to the step pull rod, and one end of the tension rod away from the step pull rod is in contact with the upper slide groove. The fixed platform is provided with an upper slide groove, a downslope groove, a downslope groove and an upslope groove connected in sequence end to end, and the movement trajectory of the tension rod passes through the upper slide groove, the downslope groove, the downslope groove and the upslope groove in sequence.

[0015] Furthermore, the self-rotating mechanism includes a self-rotating motor fixedly mounted on the driving mechanism, a self-rotating bevel gear fixedly mounted on the output end of the self-rotating motor, the self-rotating bevel gear meshes with a bevel gear disk, and the bevel gear disk is fixedly mounted on the surface of the T-shaped turntable.

[0016] Furthermore, the device also includes a power connection mechanism, which includes a contact point fixedly mounted on the self-rotating motor and a power connection block fixedly mounted on the fixed platform.

[0017] Furthermore, the device also includes a measuring mechanism, which includes a first measuring device and a second measuring device fixedly mounted on a fixed platform.

[0018] Furthermore, the driving mechanism includes a driving motor fixedly mounted on a fixed platform, the output end of the driving motor is fixedly passed through the fixed platform and is rotatably connected to the fixed platform, the output end of the driving motor is fixedly mounted with a driving bevel gear, the driving bevel gear is meshed with a bevel gear cylinder, the bevel gear cylinder is rotatably connected to the fixed platform, four fixed discs are fixedly mounted on the surface of the bevel gear cylinder, a self-rotating motor is fixedly mounted on each fixed disc, the output end of the self-rotating motor passes through the fixed disc and is rotatably connected to the fixed disc, and the T-shaped turntable is rotatably connected to the inner wall of the fixed disc.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention drives the clamping block to move away from the central axis of the T-shaped turntable under the action of the fixing mechanism, and then drives the clamping block to move downward synchronously under the continued movement of the fixing mechanism, thereby squeezing the surface of the grinding wheel, thereby automatically fixing the grinding wheel and ensuring that the grinding wheel is stably clamped.

[0021] 2. The present invention measures the thickness of the grinding wheel after loss per unit time at the unloading station d through the action of a measuring mechanism, and calculates the difference between the thickness at the loading station a and the unloading station d through an external computer device, thereby obtaining the loss of the grinding wheel per unit time. At the same time, the grinding wheel is unloaded through an external gripping device, and then a new grinding wheel is loaded at the loading station a, thereby achieving automatic cycle detection and improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of a device for detecting wear resistance of a grinding wheel provided in an embodiment of the present invention;

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention;

[0024] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0025] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at C;

[0026] Figure 5 For the present invention Figure 2 A schematic diagram of the enlarged structure at B;

[0027] Figure 6 This is a schematic diagram of the installation position structure of the power connection block of the present invention;

[0028] Figure 7 It is a schematic cross-sectional structure diagram of another viewing angle of a wear resistance performance detection device for a grinding wheel of the present invention;

[0029] Figure 8 For the present invention Figure 7 A schematic diagram of the structure at D of FIG.

[0030] Fig. 9 This is a schematic cross-sectional structure diagram of a device for detecting wear resistance of a grinding wheel according to the present invention, viewed from another perspective.

[0031] In the attached drawings: 1, main frame; 101, mounting platform; 102, fixing platform; 2, supporting mechanism; 201, grinding wheel; 202, T-shaped turntable; 203, pressing block; 3, fixing mechanism; 301, step pull rod; 302, linkage rod; 303, arc groove; 304, slide rod; 305, contact rod; 306, spiral groove; 307, vertical groove; 308, compression spring; 309, moving slide; 310, reset spring; 311, rotating ring; 4, slide mechanism; 401, tension rod; 402, upper slide; 403, downslope chute; 404, downslope chute; 405, upslope chute; 5, self-rotating mechanism; 501, self-rotating motor; 502, self-rotating bevel gear; 503, bevel gear disc; 6, power connection mechanism; 601, contact point; 602, power connection block; 7, measuring mechanism; 701, first measuring device; 702, second measuring device; 8, driving mechanism; 801, driving motor; 802, driving bevel gear; 803, bevel gear cylinder; 804, fixed disc; a, loading station; b, fixed station; c, rotating station; d, unloading station. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] It can be understood that the terms "first", "second", etc. used in the present application can be used in this article to describe various elements, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish the first element from another element.

[0034] like Figure 1 As shown, in one embodiment, a wear resistance detection device for a grinding wheel is provided, the device includes four stations: a loading station a, a fixing station b, a rotating station c, and a unloading station d, and also includes:

[0035] The main frame 1 includes a mounting platform 101 disposed on the main frame 1, and a fixing platform 102 is fixedly mounted on the surface of the mounting platform 101;

[0036] Support mechanism 2: includes four T-shaped turntables 202 installed on the fixed platform 102, a grinding wheel 201 is placed on the surface of the T-shaped turntable 202, and also includes a plurality of pressing blocks 203 installed on the fixed platform 102;

[0037] Fixing mechanism 3: used to cooperate with the slide mechanism 4 to drive the clamping block 203 to fix and limit the grinding wheel 201;

[0038] Rotation mechanism 5: used to drive the grinding wheel 201 to rotate;

[0039] Measuring mechanism 7: used to measure the thickness of the grinding wheel 201;

[0040] Driving mechanism 8: used to drive the grinding wheel 201 to revolve.

[0041] In practical application, when the grinding wheel is tested, Figure 1 As shown, the grinding wheel 201 is grabbed by an external mechanical claw and placed on the T-shaped turntable 202 at the loading station a. The initial thickness of the grinding wheel 201 is measured at the loading station a by the action of the measuring mechanism 7. At this time, the grinding wheel 201 is driven to revolve under the action of the driving mechanism 8. When moving from the loading station a to the fixed station b, the fixing mechanism 3 is pulled downward by the action of the slide groove mechanism 4, and the clamping block 203 is driven to move away from the central axis of the T-shaped turntable 202 under the action of the fixing mechanism 3. Then, under the continued movement of the fixing mechanism 3, the clamping block 203 is driven to move downward synchronously, thereby squeezing the surface of the grinding wheel 201, so as to automatically fix the grinding wheel 201 and ensure that the grinding wheel 201 is stably clamped. When moving from the fixed station b to the rotating station c, the T-shaped turntable 202 is driven to rotate under the action of the self-rotating mechanism 5, and then the grinding wheel 201 is driven to rotate. It should be noted here that by moving from the fixed station b to the rotating station c, the T-shaped turntable 202 is driven to rotate under the action of the self-rotating mechanism 5, and then the grinding wheel 201 is driven to rotate. It should be noted here that During the process of rotating station c, the grinding wheel 201 starts to rotate to ensure that it rotates at a uniform speed when it reaches the rotating station c. At this time, the test block and the grinding wheel 201 are contacted and polished per unit time by external equipment at the rotating station c. When the time is reached, the grinding wheel 201 moves from the rotating station c to the unloading station d under the action of the T-shaped turntable 202. At this time, the fixing mechanism 3 is driven to reset under the action of the slide mechanism 4, so that the clamping block 203 no longer clamps the grinding wheel 201. At the same time, the thickness of the grinding wheel 201 after loss per unit time is measured at the unloading station d through the action of the measuring mechanism 7, and the thickness at the loading station a and the unloading station d is subtracted by the external computer equipment to obtain the loss of the grinding wheel 201 per unit time. At the same time, the grinding wheel 201 is unloaded by the external gripping device, and then a new grinding wheel 201 is loaded at the loading station a, so as to achieve automatic cycle detection and improve the detection efficiency.

[0042] like Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 and Figure 8As shown, as a preferred embodiment of the present invention, the fixing mechanism 3 includes four step pull rods 301 installed on the fixing platform 102, and a linkage rod 302 is fixedly installed on the surface of each step pull rod 301. The surface of the linkage rod 302 is provided with a plurality of arc grooves 303, and the inner wall of each arc groove 303 is in contact with a slide rod 304, and the slide rod 304 is fixedly installed on the surface of the pressing block 203, and a contact rod 305 is fixedly installed on the surface of the linkage rod 302. The inner wall of the T-shaped turntable 202 is provided with a plurality of arc grooves 303. A spiral groove 306 and a vertical groove 307 connected end to end are provided, and the movement trajectory of the contact rod 305 passes through the spiral groove 306 and the vertical groove 307. A rotating ring 311 is rotatably connected to the linkage rod 302, and a compression spring 308 is fixedly installed on the surface of the rotating ring 311. The end of the compression spring 308 away from the rotating ring 311 is connected to the moving slide 309, the clamping block 203 is slidably connected to the moving slide 309, and the surface of the moving slide 309 is connected to the inner wall of the T-shaped turntable 202 through a reset spring 310.

[0043] In practical application of the embodiment of the present invention, when moving from the loading station a to the fixed station b, as shown in FIG. Figure 3 As shown, from Figure 3 From the front view direction, at this time, the step rod 301 is driven to move downward under the action of the slide mechanism 4, and the downward movement of the step rod 301 drives the linkage rod 302 to move downward, such as Figure 5 As shown, the contact rod 305 is driven to slide along the spiral groove 306. At this time, the contact rod 305 drives the linkage rod 302 to rotate, as shown in FIG. Figure 4 As shown, the rotation of the linkage rod 302 drives the slide rod 304 to move away from the central axis of the linkage rod 302 through the arc groove 303, thereby driving the clamping block 203 away from the central axis of the linkage rod 302. When the contact rod 305 moves to the vertical groove 307, the linkage rod 302 drives the moving slide cylinder 309 to move downward synchronously. It should be noted here that since the elastic potential energy of the compression spring 308 is less than the elastic potential energy of the return spring 310, the arc groove 303 first drives the slide rod 304 to move away from the central axis of the linkage rod 302 during the downward rotation. 304 is away from the central axis of the linkage rod 302. When the compression spring 308 is compressed, the linkage rod 302 drives the movable slide 309 to move downward, ensuring that the clamping block 203 fixes the grinding wheel 201, so that the grinding wheel 201 will not slip during the self-rotation grinding process. When moving from the rotating station c to the unloading station d, the clamping block 203 is driven to reset under the action of the slide mechanism 4, which is convenient for the unloading operation of the grinding wheel 201, thereby achieving the purpose of automatically installing and disassembling the grinding wheel 201.

[0044] like Figure 3 and Fig. 9As shown, as another preferred embodiment of the present invention, the slide mechanism 4 includes a tension rod 401 slidingly connected to the step rod 301, and one end of the tension rod 401 away from the step rod 301 is in contact with the upper slide 402, and the fixed platform 102 is provided with an upper slide 402, a downslope groove 403, a downslope groove 404 and an upslope groove 405 connected in sequence end to end, and the movement trajectory of the tension rod 401 passes through the upper slide 402, the downslope groove 403, the downslope groove 404 and the upslope groove 405 in sequence.

[0045] In practical application, the embodiment of the present invention is as follows: Fig. 9 As shown, when moving from the loading station a to the fixed station b, the tension rod 401 moves to the lower slide groove 404 through the upper slide groove 402 and the lower slope groove 403, as shown in FIG. Figure 3 As shown, from Figure 3 When viewed from the front, the tension rod 401 moves downward, driving the fixing mechanism 3 to move downward, and then driving the clamping block 203 to fix the grinding wheel 201. When moving from the fixing station b to the rotating station c, the tension rod 401 always maintains the tensioning effect on the step rod 301 through the lower slide groove 404, thereby ensuring the stability of the grinding wheel 201 during rotation. When moving from the rotating station c to the unloading station d, the tension rod 401 moves again to the upper slide groove 402 through the upslope groove 405, thereby achieving automatic resetting, which is convenient for unloading the grinding wheel 201.

[0046] like Figure 3 As shown, as another preferred embodiment of the present invention, the rotation mechanism 5 includes a rotation motor 501 fixedly mounted on the driving mechanism 8, and a rotation bevel gear 502 is fixedly mounted on the output end of the rotation motor 501. The rotation bevel gear 502 is meshed with a bevel gear disk 503, and the bevel gear disk 503 is fixedly mounted on the surface of the T-shaped turntable 202.

[0047] In actual application, when the embodiment of the present invention moves from the fixed station b to the rotating station c, the self-rotating motor 501 is powered on and started, and the self-rotating motor 501 starts to drive the self-rotating bevel gear 502 to rotate, and then drives the bevel gear disk 503 to rotate synchronously. The rotation of the bevel gear disk 503 drives the T-shaped turntable 202 to rotate, thereby driving the grinding wheel 201 to rotate. When moving to the rotating station c, the grinding wheel 201 is already rotating at a uniform speed, thereby ensuring that the loss rate of the grinding position on the grinding wheel 201 is consistent when grinding at the rotating station c.

[0048] like Figure 6 As shown, as another preferred embodiment of the present invention, the device further includes a power connection mechanism 6 , which includes a contact point 601 fixedly mounted on the self-rotating motor 501 , and also includes a power connection block 602 fixedly mounted on the fixing platform 102 .

[0049] In practical application of the embodiment of the present invention, when moving from the fixed station b to the rotating station c, as shown in FIG. Figure 6 As shown, when the contact point 601 contacts the power block 602, the power block 602 transmits electric energy to the rotating motor 501 through the contact point 601. At this time, the rotating motor 501 is powered and starts to run, ensuring that the grinding wheel 201 rotates at a uniform speed at the rotating station c.

[0050] like Figure 1 As shown, as another preferred embodiment of the present invention, the device further includes a measuring mechanism 7 , and the measuring mechanism 7 includes a first measuring device 701 and a second measuring device 702 fixedly mounted on the fixing platform 102 .

[0051] In practical application, the embodiment of the present invention is as follows: Figure 1 As shown, when the wear resistance test of the grinding wheel 201 is performed, the grinding wheel 201 is placed on the T-shaped turntable 202 by an external gripping device, and the thickness of the grinding wheel 201 is recorded by the first measuring device 701. When the grinding operation is completed from the rotating station c and moved to the unloading station d, the thickness of the grinding wheel 201 is recorded again by the second measuring device 702 at the unloading station d, and the difference is calculated by a computer to obtain the wear thickness of the grinding wheel 201 per unit time, thereby increasing the efficiency of the wear resistance test.

[0052] like Figure 1 As shown, as another preferred embodiment of the present invention, the driving mechanism 8 includes a driving motor 801 fixedly mounted on a fixed platform 102, the output end of the driving motor 801 is fixedly passed through the fixed platform 102 and is rotatably connected to the fixed platform 102, a driving bevel gear 802 is fixedly mounted on the output end of the driving motor 801, the driving bevel gear 802 is meshed with a bevel gear cylinder 803, the bevel gear cylinder 803 is rotatably connected to the fixed platform 102, four fixed discs 804 are fixedly mounted on the surface of the bevel gear cylinder 803, a self-rotating motor 501 is fixedly mounted on each fixed disc 804, the output end of the self-rotating motor 501 passes through the fixed disc 804 and is rotatably connected to the fixed disc 804, and the T-shaped turntable 202 is rotatably connected to the inner wall of the fixed disc 804.

[0053] In actual application of the embodiment of the present invention, when the wear resistance test of the grinding wheel 201 is performed, the drive motor 801 starts to move, and the operation of the drive motor 801 drives the drive bevel gear 802 to rotate, and then drives the bevel gear cylinder 803 to rotate synchronously. The rotation of the bevel gear cylinder 803 drives the T-shaped turntable 202 to revolve through the fixed disc 804, thereby completing the wear resistance test of the grinding wheel 201 through the cyclic motion of four workstations.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for detecting the wear resistance of a grinding wheel, characterized in that: The device includes four stations: a loading station a, a fixed station b, a rotating station c, and a unloading station d, and also includes: The main frame (1) comprises a mounting platform (101) arranged on the main frame (1), and a fixing platform (102) is fixedly mounted on the surface of the mounting platform (101); The support mechanism (2) comprises four T-shaped turntables (202) mounted on the fixed platform (102), a grinding wheel (201) being placed on the surface of the T-shaped turntables (202), and also comprises a plurality of pressing blocks (203) mounted on the fixed platform (102); The fixing mechanism (3) is used to cooperate with the slide groove mechanism (4) to drive the pressing block (203) to fix and limit the grinding wheel (201); Rotation mechanism (5): used to drive the grinding wheel (201) to rotate; Measuring mechanism (7): used to measure the thickness of the grinding wheel (201); Driving mechanism (8): used to drive the grinding wheel (201) to revolve; The fixing mechanism (3) comprises four step pull rods (301) mounted on the fixing platform (102), a linkage rod (302) being fixedly mounted on the surface of each step pull rod (301), a plurality of arc grooves (303) being provided on the surface of the linkage rod (302), the inner wall of each arc groove (303) being in contact with a slide groove rod (304), the slide groove rod (304) being fixedly mounted on the surface of the pressing block (203), a contact rod (305) being fixedly mounted on the surface of the linkage rod (302), and a spiral groove (305) being connected end to end being provided on the inner wall of the T-shaped turntable (202). 06) and a vertical groove (307), the movement trajectory of the contact rod (305) passes through the spiral groove (306) and the vertical groove (307), the linkage rod (302) is rotatably connected to a rotating ring (311), a compression spring (308) is fixedly installed on the surface of the rotating ring (311), and one end of the compression spring (308) away from the rotating ring (311) is connected to a moving slide (309), the clamping block (203) is slidably connected to the moving slide (309), and the surface of the moving slide (309) is connected to the inner wall of the T-shaped turntable (202) through a return spring (310).

2. The wear resistance detection device of a grinding wheel according to claim 1, characterized in that: The slide groove mechanism (4) comprises a tension rod (401) slidably connected to the step rod (301); one end of the tension rod (401) away from the step rod (301) contacts an upper slide groove (402); an upper slide groove (402), a downslope groove (403), a downslope groove (404) and an upslope groove (405) connected in end to end sequence are provided on the fixed platform (102); and the movement trajectory of the tension rod (401) passes through the upper slide groove (402), the downslope groove (403), the downslope groove (404) and the upslope groove (405) in sequence.

3. The wear resistance detection device of a grinding wheel according to claim 1, characterized in that: The self-rotating mechanism (5) comprises a self-rotating motor (501) fixedly mounted on the driving mechanism (8); a self-rotating bevel gear (502) is fixedly mounted on the output end of the self-rotating motor (501); the self-rotating bevel gear (502) is meshed with a bevel gear disc (503); and the bevel gear disc (503) is fixedly mounted on the surface of the T-shaped rotating disc (202).

4. The wear resistance detection device of a grinding wheel according to claim 3, characterized in that: The device further comprises a power connection mechanism (6), the power connection mechanism (6) comprising a contact point (601) fixedly mounted on the self-rotating motor (501), and a power connection block (602) fixedly mounted on the fixed platform (102).

5. The wear resistance detection device of a grinding wheel according to claim 1, characterized in that: The measuring mechanism (7) comprises a first measuring device (701) and a second measuring device (702) fixedly mounted on a fixing platform (102).

6. The wear resistance detection device of a grinding wheel according to claim 3, characterized in that: The driving mechanism (8) comprises a driving motor (801) fixedly mounted on a fixed platform (102); an output end of the driving motor (801) is fixedly passed through the fixed platform (102) and is rotatably connected to the fixed platform (102); a driving bevel gear (802) is fixedly mounted on the output end of the driving motor (801); the driving bevel gear (802) is meshed with a bevel gear cylinder (803); the bevel gear cylinder (803) is rotatably connected to the fixed platform (102); four fixed disks (804) are fixedly mounted on the surface of the bevel gear cylinder (803); each fixed disk (804) is fixedly mounted with the self-rotating motor (501); the output end of the self-rotating motor (501) passes through the fixed disk (804) and is rotatably connected to the fixed disk (804); and the T-shaped rotating disk (202) is rotatably connected to the inner wall of the fixed disk (804).

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