Polishing and grinding device for fitness equipment

Abstract

The invention belongs to the technical field of fitness equipment, and discloses a fitness equipment polishing and grinding device which comprises a base and supporting legs, a polishing and grinding structure is arranged above the base, and the polishing and grinding structure comprises a polishing and grinding mechanism, a feeding mechanism and a limiting mechanism; the polishing and grinding mechanism comprises a mounting plate, an electric telescopic rod, a first connecting plate, polishing and grinding equipment and a fixing plate, the inner wall of the mounting plate is connected with the outer wall of the electric telescopic rod, sparks generated in the polishing and grinding process can be effectively blocked, the sparks are prevented from splashing to affect operators, meanwhile, the polishing and grinding position is cooled, and the polishing and grinding efficiency is improved. According to the polishing and grinding device, the polishing and grinding effect and quality are improved, generated smoke and particles can be rapidly and conveniently collected during polishing and grinding, the smoke and the particles are prevented from being diffused into the working environment, the good working environment is provided for operators, long-term stable operation of equipment is facilitated, and the working efficiency of the polishing and grinding device is improved.

Description

Technical Field

[0001] The invention relates to the technical field of fitness equipment, in particular to a polishing and grinding device for fitness equipment. Background Art

[0002] Fitness equipment is often divided into two categories according to the number of training functions: single-function and comprehensive multi-function; single-function equipment, commonly used are rowing machines, fitness bikes, steppers, treadmills, waist beautifying machines, etc.; comprehensive multi-function equipment: generally includes chest expanders, pull-ups, bench presses, sit-ups and other equipment functions, and fitness equipment needs to polish and grind its parts during production and processing, so polishing and grinding devices are needed.

[0003] When using the existing polishing and grinding device, the parts of the fitness equipment are usually placed in the polishing and grinding device and polished and grinded by the polishing and grinding equipment. However, in actual use, a large amount of sparks and smoke are generated when polishing and grinding the parts. The sparks cannot be quickly blocked, resulting in sparks flying everywhere, affecting the normal use of the operator, and the polishing and grinding area cannot be cooled, thereby reducing the working efficiency of the polishing and grinding device.

[0004] Therefore, it is necessary to design a fitness equipment polishing and grinding device. Summary of the Invention

[0005] The purpose of the present invention is to provide a polishing and grinding device for fitness equipment to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a polishing and grinding device for fitness equipment, comprising a base and supporting legs, wherein a polishing and grinding structure is provided above the base; The polishing and grinding structure includes a polishing and grinding mechanism, a feeding mechanism and a limiting mechanism; The polishing and grinding mechanism includes a mounting plate, an electric telescopic rod, a connecting plate 1, a polishing and grinding device, and a fixed plate, the inner wall of the mounting plate is connected to the outer wall of the electric telescopic rod, the bottom of the electric telescopic rod is connected to the top of the connecting plate 1, the bottom of the connecting plate 1 is connected to the top of the polishing and grinding device, the bottom of the connecting plate 1 is connected to the top of the fixed plate, a protective cover is fixedly installed on the bottom of the fixed plate, the inner wall of the protective cover is rotatably connected to the rotating rod 1, one end of the rotating rod 1 is fixedly installed with a friction wheel, a cam is fixedly installed on the outer wall of the rotating rod 1, one end of the cam is in extrusion contact with the extrusion plate, the inner wall of the extrusion plate is slidably connected to the guide rod, one side of the extrusion plate is connected to a water guide pipe, a dust collector is fixedly installed on the inner wall of the protective cover, one end of the dust collector is connected to a material guide pipe, and one end of the material guide pipe is connected to a collection box.

[0007] According to the above technical solution, the shape of the mounting plate is U-shaped, the number of the fixing plates is four, and the fixing plates are symmetrically distributed at the bottom of the connecting plate. The shape of the protective cover is U-shaped, so that the positions of the polishing and grinding equipment, the protective cover and the friction wheel can be quickly adjusted, thereby enabling better polishing and grinding work.

[0008] According to the above technical solution, there are two rotating rods, which are symmetrically distributed on the inner wall of the protective cover; there are four friction wheels, which are symmetrically distributed at both ends of the two rotating rods, so that the cam can be rotated quickly and conveniently, and water can be better sprayed on the polishing and grinding area.

[0009] According to the above technical solution, there are two extrusion plates, which are symmetrically distributed on the inner wall of the protective cover. A spring is fixedly installed between the bottom of the extrusion plate and the inner wall of the protective cover. A spray hole is opened on one side of the protective cover. There are two vacuum cleaners, which are symmetrically distributed on the inner wall of the protective cover, so that the smoke and particles generated during polishing can be quickly collected, and the polishing work can be better performed.

[0010] According to the above technical solution, the feeding mechanism includes a carrying plate, a motor, a worm, a grinding roller, and a belt. One side of the carrying plate is connected to one end of the motor, the output end of the motor is rotatably connected to one end of the worm, the outer wall of the worm is connected to the inner wall of the grinding roller, the outer wall of the worm is transmission-connected with a belt, one side of the worm is engaged with a worm wheel, the inner wall of the worm wheel is fixedly installed with a rotating rod 2, the outer wall of the rotating rod 2 is fixedly installed with a half gear, one side of the half gear is engaged with a gear, the inner wall of the gear is fixedly installed with a rotating rod 3, and the outer wall of the rotating rod 3 is fixedly installed with a conveying roller.

[0011] According to the above technical solution, there are two supporting plates, which are symmetrically distributed on the top of the base. There are two grinding rollers, which are symmetrically distributed between the two supporting plates. The two grinding rollers are connected by a belt drive, and a guide roller is provided between the two supporting plates, so that the parts can be polished and ground quickly and conveniently, and then further polished and ground can be performed.

[0012] According to the above technical solution, there are two worm gears, which are symmetrically distributed on one side of the base; there are two gears, which are symmetrically distributed on one side of the base; there are two conveying rollers, which are symmetrically distributed above the base, so that the parts can be indirectly conveyed quickly and conveniently, and polishing and grinding work can be better performed.

[0013] According to the above technical solution, the limiting mechanism includes a second connecting plate, a double-headed electric telescopic rod, a movable plate, a limiting plate, and a guide roller. The inner wall of the second connecting plate is connected to one side of the double-headed electric telescopic rod, one end of the double-headed electric telescopic rod is connected to one side of the movable plate, the top of the movable plate is connected to the bottom of the limiting plate, and the inner side of the limiting plate is rotatably connected to both ends of the guide roller.

[0014] According to the above technical solution, there are two connecting plates 2, which are symmetrically distributed at both ends of the base. A movable groove is provided on the top of the connecting plate 2, and the bottom of the movable plate is slidingly connected to the inner wall of the movable groove. There are several guide rollers, which are symmetrically distributed on the inner sides of the two limiting plates, so that the position of the guide rollers can be quickly adjusted, and parts of different sizes can be better limited and guided.

[0015] According to the above technical solution, the bottom of the base is connected to the top of the support leg, one side of the base is connected to one end of the mounting plate, the top of the base is connected to the bottom of the supporting plate, and one end of the base is connected to one side of the connecting plate.

[0016] By means of the above technical solution, the present invention provides a polishing and grinding device for fitness equipment, which has at least the following beneficial effects: 1. This fitness equipment polishing and grinding device can effectively block the sparks generated during the polishing and grinding process through the polishing and grinding mechanism, preventing them from splashing and affecting the operator. At the same time, the friction wheel rotates with the movement of the parts, driving the cam to rotate and squeeze the extrusion plate, so that water is sprayed out from the spray hole, cooling the polishing and grinding area, improving the polishing effect and quality, and ensuring the safety of operation. The two vacuum cleaners symmetrically distributed on the inner wall of the protective cover, combined with the material guide pipe and collection box, can quickly and conveniently collect the smoke and particles generated during polishing and grinding, preventing them from spreading into the work environment, keeping the work area clean, providing a good working environment for the operator, and also conducive to the long-term stable operation of the equipment, thereby improving the working efficiency of the polishing and grinding device; 2. This fitness equipment polishing and grinding device can quickly and conveniently convey parts through the feeding mechanism, and can also drive the worm wheel, half gear, gear and other transmissions through the rotation of the worm, so that the conveying roller can realize indirect conveying of parts, thereby better performing the polishing and grinding work. The worm is driven by the motor to drive the grinding roller to rotate and grind the parts. At the same time, the belt is used to realize the synchronous rotation of the two grinding rollers, further improving the polishing and grinding efficiency; 3. This fitness equipment polishing and grinding device can quickly and conveniently drive the movable plate to move through the limiting mechanism, so that the position of the guide roller can be quickly adjusted, and then the parts of different sizes can be better limited and guided, so that the polishing and grinding work can be better performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0018] In the attached figure: Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the structure of the polishing and grinding mechanism of the present invention Figure 1 ; Figure 4 This is a schematic diagram of the structure of the polishing and grinding mechanism of the present invention Figure 2 ; Figure 5 This is a schematic diagram of the structure of the polishing and grinding mechanism of the present invention Figure 3 ; Figure 6 This is a schematic diagram of the structure of the feeding mechanism of the present invention Figure 1 ; Figure 7 This is a schematic diagram of the structure of the feeding mechanism of the present invention Figure 2 ; Figure 8 It is a structural schematic diagram of the limiting mechanism of the present invention.

[0019] Figure: 1, base; 2, support leg; 3, polishing and grinding mechanism; 301, mounting plate; 302, electric telescopic rod; 303, connecting plate 1; 304, polishing and grinding equipment; 305, fixing plate; 306, protective cover; 307, friction wheel; 308, rotating rod 1; 309, cam; 310, extrusion plate; 311, guide rod; 312, water guide pipe; 313, vacuum cleaner; 314, material guide pipe; 315, collection Box; 4. Feeding mechanism; 401. Loading plate; 402. Motor; 403. Worm; 404. Grinding roller; 405. Belt; 406. Worm gear; 407. Rotating rod 2; 408. Half gear; 409. Gear; 410. Rotating rod 3; 411. Conveying roller; 5. Limiting mechanism; 501. Connecting plate 2; 502. Double-head electric telescopic rod; 503. Moving plate; 504. Limiting plate; 505. Guide roller. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example 1: See also Figures 1-8 , the present invention provides a technical solution: a fitness equipment polishing and grinding device, comprising a base 1 and a supporting leg 2, a polishing and grinding structure is provided above the base 1; The polishing and grinding structure includes a polishing and grinding mechanism 3, a feeding mechanism 4 and a limiting mechanism 5; The polishing and grinding mechanism 3 includes a mounting plate 301, an electric telescopic rod 302, a connecting plate 303, a polishing and grinding device 304, and a fixed plate 305. The inner wall of the mounting plate 301 is connected to the outer wall of the electric telescopic rod 302, the bottom of the electric telescopic rod 302 is connected to the top of the connecting plate 303, the bottom of the connecting plate 303 is connected to the top of the polishing and grinding device 304, the bottom of the connecting plate 303 is connected to the top of the fixed plate 305, and a protective cover 306 is fixedly installed on the bottom of the fixed plate 305. The wall is rotatably connected to a rotating rod 308, one end of which is fixedly mounted with a friction wheel 307, a cam 309 is fixedly mounted on the outer wall of the rotating rod 308, one end of the cam 309 is in contact with an extrusion plate 310, an inner wall of the extrusion plate 310 is slidably connected with a guide rod 311, one side of the extrusion plate 310 is connected with a water pipe 312, a dust collector 313 is fixedly mounted on the inner wall of the protective cover 306, one end of the dust collector 313 is connected with a material guide pipe 314, and one end of the material guide pipe 314 is connected with a collection box 315; In this embodiment, the mounting plate 301 is U-shaped, and there are four fixing plates 305, which are symmetrically distributed at the bottom of the connecting plate 1 303. The protective cover 306 is U-shaped, so that the positions of the polishing device 304, the protective cover 306 and the friction wheel 307 can be quickly adjusted, thereby enabling better polishing work. Furthermore, there are two rotating rods 308, which are symmetrically distributed on the inner wall of the protective cover 306, and four friction wheels 307, which are symmetrically distributed on both ends of the two rotating rods 308, so that the cam 309 can be rotated quickly and conveniently, thereby better spraying water to the polishing area; Furthermore, there are two extrusion plates 310, which are symmetrically distributed on the inner wall of the protective cover 306. A spring is fixedly installed between the bottom of the extrusion plate 310 and the inner wall of the protective cover 306. A spray hole is opened on one side of the protective cover 306. There are two vacuum cleaners 313, which are symmetrically distributed on the inner wall of the protective cover 306. This can quickly collect the smoke and particles generated during polishing and grinding, thereby enabling better polishing work. When it is necessary to polish and grind the parts of the fitness equipment, the operator places the parts on the conveying roller 411 and the grinding roller 404, and conveys the parts by starting the feeding mechanism 4, and limits and guides the parts by starting the limiting mechanism 5, so that the conveying movement can be better performed. When polishing and grinding is required, the electric telescopic rod 302 is started to drive the connecting plate 1 303 to move, and the movement of the connecting plate 1 303 can drive the polishing and grinding equipment 304 and the protective cover 306 to move. As the protective cover 306 moves, the friction wheel 307 can be driven to move, so that the polishing and grinding equipment 304 and the friction wheel 307 can contact the parts. By starting the polishing and grinding equipment 304, the parts can be polished and ground, and the parts can be conveyed by the feeding mechanism 4, and the friction wheel 307 is in squeeze contact with the parts. When the parts move, the friction wheel 307 can be driven to rotate, and the rotation rod 307 is driven by the rotation of the friction wheel 307 The cam 309 is rotated by rotating the rotating rod 308, and the cam 309 is brought into contact with the extrusion plate 310 by rotating the cam 309, and the extrusion plate 310 is squeezed to slide on the guide rod 311. The sliding of the extrusion plate 310 can squeeze the water inside the protective cover 306 and spray it out through the spray hole, so that the polishing and grinding area can be cooled, thereby enabling better polishing and grinding work. When the cam 309 is not in contact with the extrusion plate 310, the extrusion plate 310 is reset by the elastic force of the spring, and external water is introduced into the protective cover 306 through the water guide pipe 312 for replenishment. The smoke generated during polishing and grinding can be transported to the collection box 315 for storage through the guide pipe 314 by starting the dust collector 313. The protective cover 306 can block the sparks generated during the polishing and grinding process, thereby effectively preventing sparks from flying and affecting the operator, thereby enabling better polishing and grinding work.

[0022] Example 2: On the basis of Example 1, the feeding mechanism 4 includes a carrying plate 401, a motor 402, a worm 403, a grinding roller 404, and a belt 405. One side of the carrying plate 401 is connected to one end of the motor 402, and the output end of the motor 402 is rotatably connected to one end of the worm 403. The outer wall of the worm 403 is connected to the inner wall of the grinding roller 404. The outer wall of the worm 403 is transmission-connected with a belt 405. A worm gear 406 is engaged with one side of the worm 403. A rotating rod 2 407 is fixedly installed on the inner wall of the worm gear 406. A half gear 408 is fixedly installed on the outer wall of the rotating rod 2 407. A gear 409 is meshed with one side of the half gear 408. A rotating rod 3 410 is fixedly installed on the inner wall of the gear 409. A conveying roller 411 is fixedly installed on the outer wall of the rotating rod 3 410. In this embodiment, there are two supporting plates 401, which are symmetrically distributed on the top of the base 1. There are two grinding rollers 404, which are symmetrically distributed between the two supporting plates 401. The two grinding rollers 404 are connected by a belt 405. A guide roller 505 is provided between the two supporting plates 401, so that the parts can be polished and polished quickly and conveniently, and further polished and polished. Furthermore, there are two worm gears 406, which are symmetrically distributed on one side of the base 1, two gears 409, which are symmetrically distributed on one side of the base 1, and two conveying rollers 411, which are symmetrically distributed above the base 1, so that the parts can be indirectly conveyed quickly and conveniently, and polishing and grinding work can be better performed.

[0023] When it is necessary to polish and grind the parts of the fitness equipment, the operator places the parts on the conveying roller 411 and the grinding roller 404. At this time, the motor 402 is started to drive the worm 403 to rotate, and the rotation of the worm 403 drives the grinding roller 404 to rotate. The rotation of the grinding roller 404 can grind the parts, so that the parts can be further polished and ground, which is more convenient for the operator to use. The belt 405 can make the two grinding rollers 404 rotate at the same time, so that polishing and grinding can be better performed. The rotation of the worm 403 drives the worm wheel 406 to rotate, and the rotation of the worm wheel 406 drives the rotating rod 2 407 to rotate, and the rotation of the rotating rod 2 407 drives the half gear 408 to rotate, and the half gear 409 is driven by the half gear 410. When 08 rotates and engages with gear 409, it drives gear 409 to rotate, and the rotation of gear 409 drives the rotating rod three 410 to rotate, and the rotation of rotating rod three 410 drives the conveying roller 411 to rotate. The parts can be conveyed by the rotation of conveying roller 411. When the half gear 408 is not engaged with gear 409, the conveying roller 411 stops rotating, so that the parts can be indirectly conveyed, and then the polishing and grinding work can be better carried out. The guide roller 505 installed between the two supporting plates 401 can better assist the parts to move. At this time, by starting the limiting mechanism 5, parts of different sizes can be limited and guided quickly and conveniently, and by starting the polishing and grinding mechanism 3, the parts can be polished and ground quickly and conveniently.

[0024] Example 3: On the basis of the first embodiment, the limiting mechanism 5 includes a second connecting plate 501, a double-headed electric telescopic rod 502, a movable plate 503, a limiting plate 504, and a guide roller 505. The inner wall of the second connecting plate 501 is connected to one side of the double-headed electric telescopic rod 502, one end of the double-headed electric telescopic rod 502 is connected to one side of the movable plate 503, the top of the movable plate 503 is connected to the bottom of the limiting plate 504, and the inner side of the limiting plate 504 is rotatably connected to both ends of the guide roller 505; In this embodiment, there are two second connecting plates 501, which are symmetrically distributed at both ends of the base 1. A movable groove is provided on the top of the second connecting plate 501, and the bottom of the movable plate 503 is slidably connected to the inner wall of the movable groove. There are a plurality of guide rollers 505, which are symmetrically distributed on the inner sides of the two limiting plates 504, so that the position of the guide rollers 505 can be quickly adjusted, thereby better limiting and guiding parts of different sizes. Furthermore, the bottom of the base 1 is connected to the top of the support leg 2, one side of the base 1 is connected to one end of the mounting plate 301, the top of the base 1 is connected to the bottom of the supporting plate 401, and one end of the base 1 is connected to one side of the connecting plate 2 501.

[0025] When it is necessary to polish and grind the parts of the fitness equipment, the operator places the parts on the conveying roller 411 and the grinding roller 404. At this time, the double-headed electric telescopic rod 502 is started to drive the movable plate 503 to slide on the connecting plate 2 501. The sliding of the movable plate 503 drives the limit plate 504 to move, and the movement of the limit plate 504 drives the guide roller 505 to move, so that the position of the guide roller 505 can be adjusted quickly and conveniently. The movement of the guide roller 505 can contact the parts, so that parts of different sizes can be better limited and guided. At this time, by starting the feeding mechanism 4, the parts can be indirectly conveyed quickly and conveniently, and the parts can be polished and grinded better. At this time, by starting the polishing and grinding mechanism 3, the parts can be polished and grinded quickly and conveniently, which can be more convenient for the operator to use.

[0026] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0027] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A polishing and grinding device for fitness equipment, comprising a base (1) and a support leg (2), characterized in that: A polishing and grinding structure is provided above the base (1); The polishing and grinding structure comprises a polishing and grinding mechanism (3), a feeding mechanism (4) and a limiting mechanism (5); The polishing and grinding mechanism (3) includes a mounting plate (301), an electric telescopic rod (302), a connecting plate (303), a polishing and grinding device (304), and a fixing plate (305). The inner wall of the mounting plate (301) is connected to the outer wall of the electric telescopic rod (302), the bottom of the electric telescopic rod (302) is connected to the top of the connecting plate (303), the bottom of the connecting plate (303) is connected to the top of the polishing and grinding device (304), and the bottom of the connecting plate (303) is connected to the outer wall of the electric telescopic rod (302). The tops of the fixed plates (305) are connected, a protective cover (306) is fixedly installed on the bottom of the fixed plates (305), the inner wall of the protective cover (306) is rotatably connected to a rotating rod (308), one end of the rotating rod (308) is fixedly installed with a friction wheel (307), the outer wall of the rotating rod (308) is fixedly installed with a cam (309), one end of the cam (309) is in extrusion contact with an extrusion plate (310), and the inner wall of the extrusion plate (310) is slidably connected to a guide rod (311).

2. The fitness equipment polishing and grinding device according to claim 1, characterized in that: A water guide pipe (312) is provided on one side of the extrusion plate (310), a dust collector (313) is fixedly installed on the inner wall of the protective cover (306), one end of the dust collector (313) is provided with a material guide pipe (314), and one end of the material guide pipe (314) is provided with a collection box (315). The shape of the mounting plate (301) is U-shaped, the number of the fixing plates (305) is four, and the fixing plates (305) are symmetrically distributed on the bottom of the connecting plate (303). The shape of the protective cover (306) is U-shaped.

3. The fitness equipment polishing and grinding device according to claim 1, characterized in that: The number of the rotating rods (308) is two, and the rotating rods (308) are symmetrically distributed on the inner wall of the protective cover (306). The number of the friction wheels (307) is four, and the friction wheels (307) are symmetrically distributed at both ends of the two rotating rods (308).

4. The fitness equipment polishing and grinding device according to claim 2, characterized in that: There are two extrusion plates (310), which are symmetrically distributed on the inner wall of the protective cover (306). A spring is fixedly installed between the bottom of the extrusion plate (310) and the inner wall of the protective cover (306). A spray hole is provided on one side of the protective cover (306). There are two vacuum cleaners (313), which are symmetrically distributed on the inner wall of the protective cover (306).

5. The fitness equipment polishing and grinding device according to claim 1, characterized in that: The feeding mechanism (4) includes a bearing plate (401), a motor (402), a worm (403), a grinding roller (404), and a belt (405). One side of the bearing plate (401) is connected to one end of the motor (402). The output end of the motor (402) is rotatably connected to one end of the worm (403). The outer wall of the worm (403) is connected to the inner wall of the grinding roller (404). The outer wall of the worm (403) is connected to the belt (405). 5), one side of the worm (403) is meshed with a worm wheel (406), the inner wall of the worm wheel (406) is fixedly mounted with a second rotating rod (407), the outer wall of the second rotating rod (407) is fixedly mounted with a half gear (408), one side of the half gear (408) is meshed with a gear (409), the inner wall of the gear (409) is fixedly mounted with a third rotating rod (410), and the outer wall of the third rotating rod (410) is fixedly mounted with a conveying roller (411).

6. The fitness equipment polishing and grinding device according to claim 5, characterized in that: There are two bearing plates (401), which are symmetrically distributed on the top of the base (1). There are two grinding rollers (404), which are symmetrically distributed between the two bearing plates (401). The two grinding rollers (404) are connected by a belt (405). A guide roller (505) is provided between the two bearing plates (401).

7. The fitness equipment polishing and grinding device according to claim 5, characterized in that: There are two worm wheels (406), which are symmetrically distributed on one side of the base (1). There are two gears (409), which are symmetrically distributed on one side of the base (1). There are two conveying rollers (411), which are symmetrically distributed above the base (1).

8. The fitness equipment polishing and grinding device according to claim 1, characterized in that: The limiting mechanism (5) includes a second connecting plate (501), a double-headed electric telescopic rod (502), a movable plate (503), a limiting plate (504), and a guide roller (505). The inner wall of the second connecting plate (501) is connected to one side of the double-headed electric telescopic rod (502), one end of the double-headed electric telescopic rod (502) is connected to one side of the movable plate (503), the top of the movable plate (503) is connected to the bottom of the limiting plate (504), and the inner side of the limiting plate (504) is rotatably connected to both ends of the guide roller (505).

9. The fitness equipment polishing and grinding device according to claim 8, characterized in that: There are two connecting plates (501) and the connecting plates (501) are symmetrically distributed at both ends of the base (1). A movable groove is provided on the top of the connecting plate (501). The bottom of the movable plate (503) is slidably connected to the inner wall of the movable groove. There are several guide rollers (505) and the guide rollers (505) are symmetrically distributed on the inner sides of the two limit plates (504).

10. The fitness equipment polishing and grinding device according to claim 1, characterized in that: The bottom of the base (1) is connected to the top of the support leg (2), one side of the base (1) is connected to one end of the mounting plate (301), the top of the base (1) is connected to the bottom of the bearing plate (401), and one end of the base (1) is connected to one side of the second connecting plate (501).

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