Automatic grinding device for hardware product surface machining
By designing an automatic grinding device, the combination of threaded rods and clamping parts is used to solve the problems of unstable and inaccurate grinding positions of traditional hardware products, stable clamping and multi-angle grinding of hardware products are achieved, and the grinding quality is improved.
Patent Information
- Application Number
- CN202411734905.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-02-25
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The grinding devices of traditional hardware products lack clamping of hardware products, resulting in unstable grinding, which can easily cause the hardware products to slide and polish the position inaccurately, and it is impossible to achieve all-round and multi-angle grinding.
An automatic grinding device is designed, including a fixing table, an operating table, a cross groove, a threaded rod, a clamping member and a push block. Through the cooperation of the threaded rod and a clamping member, stable clamping and multi-angle grinding of hardware components are achieved.
It realizes stable clamping of hardware products during the grinding process, prevents slipping, improves the stability and accuracy of grinding, and can achieve all-round and multi-angle grinding.
Smart Images
Figure CN119501759A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of hardware product processing, and in particular relates to an automatic polishing device for surface processing of hardware products. Background Art
[0002] Gold: Traditional hardware products, also known as "small hardware", refer to five metals: gold, silver, copper, iron and tin. They can be made into knives, swords and other works of art or metal devices through artificial processing. Hardware in modern society is more extensive, such as hardware tools, hardware parts, daily hardware, construction hardware and security products, etc. Hardware needs to be processed during the production process. The raw materials (stainless steel, copper, aluminum, iron) are processed into various parts according to customer drawings or samples using lathes, milling machines, drilling machines, polishing machines and other machines. During the processing, grinding devices are needed to grind the processed parts.
[0003] However, the traditional device still has the following problems when in use: since the traditional device does not have the function of clamping the hardware products when grinding the hardware products, it is easy to cause the hardware products to slip due to not being properly fixed during grinding, and it will also cause the grinding position to be inaccurate, resulting in certain errors in grinding, and during grinding, only the fixed position of the hardware products can be grinded, which has certain limitations and cannot achieve all-round and multi-angle grinding. Therefore, a multi-angle and highly stable grinding device is very important. Summary of the invention
[0004] In view of the shortcomings of the prior art, the object of the present invention is to provide an automatic grinding device for surface processing of hardware products, which has the advantages of high device stability and multi-angle grinding.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic polishing device for surface processing of hardware products, comprising a fixed table, an operating table is arranged on the upper surface of the fixed table, a cross groove is opened on the inner wall of the operating table, a circular groove is arranged between the axis centers of the cross groove, a limit plate is fixedly connected to the inner wall of the cross groove, there are four limit plates, one side of the limit plate is rotatably connected to a threaded rod, the outer wall of the threaded rod is threadedly connected to a clamp and a push block, both sides of the clamp are fixedly connected to the inner wall of the cross groove, one side of the push block is fixedly connected to a fixture, and one end of the threaded rod is fixedly connected to gear 1.
[0006] Through the above technical scheme, the clamping effect of the hardware components is achieved. When the four clamps touch the hardware components, the rotation will be unable to rotate, thereby achieving the fixation of the hardware components during grinding, preventing the hardware components with smooth surfaces from slipping due to a certain pressure during grinding, and fixing them, thereby improving the stability and quality of grinding.
[0007] Preferably, a knob is provided on the top of the fixed table, the outer wall of the knob is fixedly connected to a rotating table, the outer wall of the rotating table is fitted with the inner wall of the circular groove, and the top of the rotating table is fixedly connected to a circular rack, the teeth of the circular rack are meshed with the teeth of gear one.
[0008] Through the above technical scheme, the effect of installing the starting device is achieved. By rotating the knob, the circular rack on the rotating table is driven to engage with gear 1 and rotate, which drives the threaded rod to rotate, and drives the push block and the clamp to clamp the hardware components. The overall clamping process is relatively simple to operate, but the clamping effect is very significant.
[0009] Preferably, a slider 1 is fixedly connected to the bottom of the operating table, and there are four sliders 1. The inner wall of the fixed table is symmetrically provided with a slide groove 1, and the outer walls of every two sliders 1 are slidably connected to the inner wall of the slide groove 1. A ring handle is fixedly connected to one side of the operating table.
[0010] Through the above technical solution, the horizontal movement of the operating table is realized. By pulling the annular handle, the slider fixed at the bottom of the operating table is slidably connected with the slide groove, so that the position of the hardware parts can be corrected, which helps to improve the accuracy of the grinding position and helps to enhance the quality of the polished hardware parts.
[0011] Preferably, a fixing plate is symmetrically fixedly connected to the top of the fixing table, circular parts are rotatably connected to the inner walls of the two fixing plates, limiting rings are fixedly connected to the outer walls of the two circular parts, a support frame is fixedly connected between the outer walls of the two circular parts, two slide grooves are symmetrically provided on the inner wall of the support frame, a placement plate is provided on the inner wall of the support frame, a slider two is symmetrically fixedly connected to the outer wall of the placement plate, and the outer wall of the slider two is slidably connected to the inner wall of the slide groove two.
[0012] Through the above technical scheme, the effect of fixing and moving the support frame is achieved. The support frame rotates on the circular part, the limit ring limits the rotation, and then the support frame is rotated to find the angle that needs to be adjusted, and the rotary compass is rotated to slide the sliders 2 on both sides of the placement plate into connection with the slide grooves 2 to achieve the sliding required for fixation.
[0013] Preferably, a telescopic guide rod and a telescopic cylinder are fixedly connected to the top of the placement plate, the outer walls of the telescopic guide rod and the outer walls of the telescopic cylinder both penetrate the inner wall of the support frame, the outer wall of the placement plate is fixedly connected to a fixing clamp, the outer wall of the fixing clamp is fixedly connected to a motor, the output shaft of the motor is fixedly connected to gear 2, the inner wall of the placement plate is rotatably connected to a rotating shaft, one end of the rotating shaft is fixedly connected to gear 3, the teeth of gear 3 are meshed with the teeth of gear 2, the other end of the rotating shaft is fixedly connected to a grinder, and the outer wall of the rotating shaft is fixedly connected to a protective cover.
[0014] Through the above technical scheme, the effect of adjusting the angle of the support frame is achieved. The support frame is rotated and adjusted by pulling the square handle, and the threaded adjustment column is driven to fix the support frame after the angle adjustment by rotating the rotary compass, so that the grinding angle of the hardware parts can be automatically adjusted. All positions on the surface of the hardware parts can be polished, and the angle can be fixed after adjusting the angle, thereby enhancing the stability of the device and improving the accuracy of grinding. During grinding, the grinding tool is provided with a protective cover to block the debris during grinding, so as to prevent the debris from causing accidental injuries to the staff and the device from being easily jammed. The overall device breaks the limitations of fixed-position grinding of conventional devices and has higher applicability.
[0015] Preferably, the inner wall of one side of the placing plate is threadedly connected with a threaded adjustment column, the outer wall of the threaded adjustment column is fixedly connected with a rotating compass, one side of the fixed platform is fixedly connected with a semicircular table, the inner wall of the semicircular table is provided with an internal threaded groove, and the top of the support frame is fixedly connected with a square handle.
[0016] Through the above technical solution, the support frame is fixed after the angle is adjusted. The rotating compass drives the threaded adjustment column to rotate and move downward, and it is threadedly connected with the internal thread groove opened on the semicircular table, thereby achieving fixation after the position is adjusted and improving the stability of the device.
[0017] Preferably, a buffer spring is fixedly connected to the bottom of the fixed platform, and there are four buffer springs. One end of the buffer spring is fixedly connected to a supporting leg, and the top of the supporting leg is fixedly connected to the bottom of the fixed platform. The internal thread of the supporting leg is connected to a screw column, and the bottom of the supporting leg is fixedly connected to a diamond block, and the inner wall of the diamond block is threadedly connected to the outer wall of the screw column, and the bottom of the screw column is fixedly connected to a base.
[0018] Through the above technical scheme, the effect of lifting the entire operating table is achieved. By rotating the diamond block, the supporting legs are driven to move upward on the screw column, so that the device can be automatically raised and lowered. The height of the operating table can be slightly adjusted so that the entire device has a certain horizontal height, which is convenient for the staff to load and unload materials during grinding, and convenient for viewing the dynamics of the device and the completeness of the grinding adjustment. The buffer spring can reduce the vibration generated when the grinding device is in use.
[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. By pulling the square handle, the support frame can be rotated and adjusted, and then the threaded adjustment column is driven by rotating the rotary compass to fix the support frame after the angle is adjusted. This realizes the automatic adjustment of the grinding angle of the hardware parts. All positions on the surface of the hardware parts can be polished, and the angle can be fixed after adjusting the angle, which enhances the stability of the device and improves the accuracy of grinding. During grinding, the grinding tool is equipped with a protective cover to block the debris during grinding to prevent the debris from causing accidental injuries to the staff and the device from being easily jammed. The overall device breaks the limitations of fixed-position grinding of conventional devices and has higher applicability.
[0020] 2. By rotating the knob, the circular rack on the rotating table is driven to mesh with gear 1 and rotate, which drives the threaded rod to rotate, and drives the push block and the clamp to clamp the hardware parts. When the four clamps touch the hardware parts, the rotation will be unable to rotate, thus achieving the fixation of the hardware parts during grinding, preventing the smooth surface from slipping due to a certain pressure during grinding, and fixing them to improve the stability and quality of grinding.
[0021] 3. By rotating the diamond block, the supporting legs are driven to move upward on the screw column, so that the device can be automatically raised and lowered. The height of the operating table can be slightly adjusted so that the entire device has a certain horizontal height, which is convenient for the staff to load and unload materials during grinding, and convenient for viewing the dynamics of the device and the completeness of the grinding adjustment. The buffer spring can reduce the vibration generated when the grinding device is used. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the operating table of the present invention; Figure 3 It is a schematic diagram of the structure of the push block of the present invention; Figure 4 It is a schematic diagram of the structure of the placement plate of the present invention; Figure 5 It is a schematic enlarged view of the structure at A of the present invention; Figure 6 It is a schematic diagram of the second structure of the slider of the present invention; Figure 7 It is a schematic diagram of the structure of the semi-circular table of the present invention; Figure 8 It is a schematic structural diagram of the buffer spring of the present invention.
[0023] In the figure: 1, fixed table; 2, operating table; 3, cross slot; 4, circular slot; 5, limit plate; 6, threaded rod; 7, clamping piece; 8, push block; 9, fixture; 10, gear 1; 11, rotating table; 12, circular rack; 13, knob; 14, slider 1; 15, ring handle; 16, slide 1; 17, fixed plate; 18, circular piece; 19, support frame; 20, limit ring; 21, slide 2; 22, placement plate ; 23. Slider 2; 24. Threaded adjustment column; 25. Rotating compass; 26. Fixing clamp; 27. Motor; 28. Gear 2; 29. Gear 3; 30. Rotating shaft; 31. Telescopic guide rod; 32. Square handle; 33. Telescopic cylinder; 34. Protective cover; 35. Grinding tool; 36. Semicircular table; 37. Internal thread groove; 38. Buffer spring; 39. Support leg; 40. Diamond block; 41. Screw column; 42. Base. DETAILED DESCRIPTION
[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.
[0025] See also Figure 1-8 The present invention provides a technical solution: an automatic polishing device for surface processing of hardware products, comprising a fixed table 1, an operating table 2 is arranged on the upper surface of the fixed table 1, a cross slot 3 is opened on the inner wall of the operating table 2, a circular slot 4 is arranged between the axis centers of the cross slot 3, a limit plate 5 is fixedly connected to the inner wall of the cross slot 3, and the number of the limit plates 5 is four. A threaded rod 6 is rotatably connected to one side of the limit plate 5, and a clamping member 7 and a push block 8 are threadedly connected to the outer wall of the threaded rod 6. Both sides of the clamping member 7 are fixedly connected to the inner wall of the cross slot 3, one side of the push block 8 is fixedly connected to a fixture 9, and one end of the threaded rod 6 is fixedly connected to a gear 10.
[0026] In this embodiment, the rotation of four gears 10 drives the threaded rod 6 fixedly connected thereto respectively, and the limit plate 5 and the clamping member 7 limit the vertical and horizontal positions of the threaded rod 6. When the threaded rod 6 rotates, the push block 8 will approach the direction of the hardware component. When the push block 8 moves, the four clamps 9 fixedly connected to its outer wall touch the hardware component, and the knob 13 will be unable to rotate, thereby achieving the fixation of the hardware component before polishing.
[0027] Specifically, a knob 13 is provided on the top of the fixed table 1, and the outer wall of the knob 13 is fixedly connected to the rotating table 11. The outer wall of the rotating table 11 is fitted with the inner wall of the circular groove 4. The top of the rotating table 11 is fixedly connected to a circular rack 12, and the teeth of the circular rack 12 are meshed with the teeth of the gear 10.
[0028] In this embodiment, the hardware parts are placed on the upper surface of the rotating table 11. By rotating the knob 13, the knob 13 will drive the rotating table 11 to rotate, and the rotating table 11 will drive the circular rack 12 to rotate, which will drive the four gears 10 meshing in various directions on the inner wall of the cross groove 3 to rotate in the same direction.
[0029] Specifically, a slider 14 is fixedly connected to the bottom of the operating table 2, and there are four sliders 14. The inner wall of the fixed table 1 is symmetrically provided with a slide groove 16. The outer walls of every two sliders 14 are slidably connected to the inner wall of the slide groove 16. A ring handle 15 is fixedly connected to one side of the operating table 2.
[0030] In this embodiment, by pulling the annular handle 15, the slider 14 fixedly connected to the bottom of the operating table 2 is slidably connected to the slide groove 16, so that the position of the hardware parts can be corrected.
[0031] Specifically, the top of the fixed table 1 is symmetrically fixedly connected with a fixed plate 17, the inner walls of the two fixed plates 17 are rotatably connected with a circular piece 18, the outer walls of the two circular pieces 18 are fixedly connected with a limiting ring 20, a support frame 19 is fixedly connected between the outer walls of the two circular pieces 18, the inner wall of the support frame 19 is symmetrically provided with a slide groove 21, the inner wall of the support frame 19 is provided with a placement plate 22, the outer wall of the placement plate 22 is symmetrically fixedly connected with a slider 23, and the outer wall of the slider 23 is slidably connected to the inner wall of the slide groove 21.
[0032] In this embodiment, when the angle of the grinder 35 needs to be changed, the square handle 32 is pulled, the support frame 19 is rotated on the circular part 18, the limit ring 20 limits the rotation, and then the support frame 19 is rotated to find the angle that needs to be adjusted, and the sliders 23 on both sides of the placement plate 22 are slidably connected with the slide grooves 21 to achieve the required sliding of the fixation.
[0033] Specifically, the top of the placement plate 22 is fixedly connected with a telescopic guide rod 31 and a telescopic cylinder 33, the outer walls of the telescopic guide rod 31 and the outer walls of the telescopic cylinder 33 both penetrate the inner wall of the support frame 19, the outer wall of the placement plate 22 is fixedly connected with a fixing clamp 26, the outer wall of the fixing clamp 26 is fixedly connected with a motor 27, the output shaft of the motor 27 is fixedly connected with a gear 2 28, the inner wall of the placement plate 22 is rotatably connected with a rotating shaft 30, one end of the rotating shaft 30 is fixedly connected with a gear 3 29, the teeth of the gear 3 29 are meshed with the teeth of the gear 2 28, the other end of the rotating shaft 30 is fixedly connected with a grinder 35, and the outer wall of the rotating shaft 30 is fixedly connected with a protective cover 34.
[0034] In this embodiment, the motor 27 is then started, and the output shaft of the motor 27 drives the gear 2 28 to rotate, and the gear 2 28 drives the meshing gear 3 29 to rotate, and the gear 3 29 drives the rotating shaft 30 to rotate, thereby realizing the rotation of the grinder 35 and realizing the grinding of the hardware parts. The protective cover 34 prevents the hardware debris from being splashed during grinding, and the telescopic guide rod 31 limits the downward movement of the placement plate 22.
[0035] Specifically, the inner wall of one side of the placement plate 22 is threadedly connected to a threaded adjustment column 24, the outer wall of the threaded adjustment column 24 is fixedly connected to a rotating compass 25, one side of the fixed platform 1 is fixedly connected to a semicircular table 36, the inner wall of the semicircular table 36 is provided with an internal thread groove 37, and the top of the support frame 19 is fixedly connected to a square handle 32.
[0036] In this embodiment, the rotary compass 25 is rotated, and the rotary compass 25 drives the threaded adjustment column 24 to rotate and move downward, and just realizes threaded connection with the internal thread groove 37 provided on the semicircular table 36, so as to achieve fixation after the position is adjusted.
[0037] Specifically, a buffer spring 38 is fixedly connected to the bottom of the fixed platform 1, and there are four buffer springs 38. One end of the buffer spring 38 is fixedly connected to a support leg 39. The top of the support leg 39 is fixedly connected to the bottom of the fixed platform 1. The internal thread of the support leg 39 is connected to a screw column 41. The bottom of the support leg 39 is fixedly connected to a diamond block 40. The inner wall of the diamond block 40 is threadedly connected to the outer wall of the screw column 41. The bottom of the screw column 41 is fixedly connected to a base 42.
[0038] In this embodiment, by rotating the upward diamond block 40, the diamond block 40 will drive the supporting leg 39 to move upward, so that the device can be automatically raised and lowered. The buffer spring 38 can reduce the vibration generated when the grinding device is in use.
[0039] The working principle and use process of the present invention are as follows: when in use, the hardware parts are placed on the upper surface of the rotating table 11, and the knob 13 is rotated, the knob 13 will drive the rotating table 11 to rotate, the rotating table 11 will drive the circular rack 12 to rotate, and the four gears 10 meshing in various directions on the inner wall of the cross groove 3 will be driven to rotate in the same direction. The rotation of the four gears 10 respectively drives the threaded rod 6 fixedly connected thereto, and the limit plate 5 and the clamping member 7 limit the vertical and horizontal positions of the threaded rod 6. When the threaded rod 6 is rotated, the limit plate 5 and the clamping member 7 limit the vertical and horizontal positions of the threaded rod 6. When the rod 6 rotates, the push block 8 will approach the direction of the hardware component. When the push block 8 moves, the four clamps 9 fixedly connected to its outer wall touch the hardware component, and the knob 13 will not be able to rotate, thereby achieving the fixation of the hardware component before grinding. By pulling the annular handle 15, the slider 14 fixedly connected to the bottom of the operating table 2 is slidably connected to the slide groove 16, and the position of the hardware component can be corrected. When the angle of the grinder 35 needs to be changed, the square handle 32 is pulled, and the support frame 19 is rotated on the circular part 18 to limit The position ring 20 limits the rotation, and then the support frame 19 is rotated to find the angle to be adjusted, and the rotating compass 25 is rotated. The rotating compass 25 drives the threaded adjustment column 24 to rotate and move downward, and is threadedly connected with the internal thread groove 37 provided on the semicircular table 36, so as to achieve the fixation after the position is adjusted. The sliders 23 on both sides of the placement plate 22 are slidably connected with the slide groove 21 to achieve the sliding required for fixation. The telescopic guide rod 31 limits the downward movement of the placement plate 22, and then the motor 27 is started. The output shaft of the motor 27 drives the gear 28 to rotate, and the gear 28 drives the meshing gear 3 29 to rotate. The gear 3 29 will drive the rotating shaft 30 to rotate, so as to achieve the rotation of the grinder 35 and the grinding of the hardware parts. The protective cover 34 is anti-sputtering treatment for the hardware debris during grinding. By rotating the upward diamond block 40, the diamond block 40 will drive the supporting leg 39 to move upward, so as to achieve the effect of automatically lifting the device, and the vibration generated when the grinding device is used can be weakened by the buffer spring 38.
[0040] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An automatic polishing device for surface processing of hardware products, comprising a fixed table (1), characterized in that: An operating table (2) is arranged on the upper surface of the fixed table (1), a cross groove (3) is provided on the inner wall of the operating table (2), a circular groove (4) is arranged between the axis centers of the cross groove (3), a limit plate (5) is fixedly connected to the inner wall of the cross groove (3), the limit plates (5) are four in number, one side of the limit plate (5) is rotatably connected to a threaded rod (6), the outer wall of the threaded rod (6) is threadedly connected to a clamp (7) and a push block (8), both sides of the clamp (7) are fixedly connected to the inner wall of the cross groove (3), one side of the push block (8) is fixedly connected to a clamp (9), and one end of the threaded rod (6) is fixedly connected to a gear 1 (10).
2. The automatic polishing device for surface processing of hardware products according to claim 1 is characterized in that: A knob (13) is provided on the top of the fixed platform (1), the outer wall of the knob (13) is fixedly connected to the rotating platform (11), the outer wall of the rotating platform (11) is in contact with the inner wall of the circular groove (4), and a circular rack (12) is fixedly connected to the top of the rotating platform (11), the teeth of the circular rack (12) are meshed with the teeth of gear one (10).
3. The automatic polishing device for surface processing of hardware products according to claim 1 is characterized in that: A slider 1 (14) is fixedly connected to the bottom of the operating table (2), and there are four sliders 1 (14). The inner wall of the fixed table (1) is symmetrically provided with a slide groove 1 (16), and the outer walls of every two sliders 1 (14) are slidably connected to the inner wall of the slide groove 1 (16). A ring handle (15) is fixedly connected to one side of the operating table (2).
4. The automatic polishing device for surface processing of hardware products according to claim 1 is characterized in that: The top of the fixed platform (1) is symmetrically fixedly connected with a fixed plate (17), the inner walls of the two fixed plates (17) are rotatably connected with circular parts (18), the outer walls of the two circular parts (18) are fixedly connected with a limiting ring (20), a support frame (19) is fixedly connected between the outer walls of the two circular parts (18), the inner wall of the support frame (19) is symmetrically provided with a second slide groove (21), the inner wall of the support frame (19) is provided with a placement plate (22), the outer wall of the placement plate (22) is symmetrically fixedly connected with a second slide block (23), and the outer wall of the second slide block (23) is slidably connected to the inner wall of the second slide groove (21).
5. The automatic polishing device for surface processing of hardware products according to claim 4 is characterized in that: The top of the placement plate (22) is fixedly connected to a telescopic guide rod (31) and a telescopic cylinder (33); the outer walls of the telescopic guide rod (31) and the outer walls of the telescopic cylinder (33) penetrate the inner wall of the support frame (19); the outer wall of the placement plate (22) is fixedly connected to a fixing clamp (26); the outer wall of the fixing clamp (26) is fixedly connected to a motor (27); the output shaft of the motor (27) is fixedly connected to a gear 2 (28); the inner wall of the placement plate (22) is rotatably connected to a rotating shaft (30); one end of the rotating shaft (30) is fixedly connected to a gear 3 (29); the teeth of the gear 3 (29) mesh with the teeth of the gear 2 (28); the other end of the rotating shaft (30) is fixedly connected to a grinder (35); and the outer wall of the rotating shaft (30) is fixedly connected to a protective cover (34).
6. The automatic polishing device for surface processing of hardware products according to claim 4 is characterized in that: The inner wall of one side of the placement plate (22) is threadedly connected to a threaded adjustment column (24), the outer wall of the threaded adjustment column (24) is fixedly connected to a rotating compass (25), one side of the fixed platform (1) is fixedly connected to a semicircular platform (36), the inner wall of the semicircular platform (36) is provided with an internal thread groove (37), and the top of the support frame (19) is fixedly connected to a square handle (32).
7. The automatic polishing device for surface processing of hardware products according to claim 1 is characterized in that: The bottom of the fixed platform (1) is fixedly connected to a buffer spring (38), the number of the buffer springs (38) being four, one end of the buffer spring (38) being fixedly connected to a support leg (39), the top of the support leg (39) being fixedly connected to the bottom of the fixed platform (1), the inner thread of the support leg (39) being connected to a screw column (41), the bottom of the support leg (39) being fixedly connected to a rhombus block (40), the inner wall of the rhombus block (40) being threadedly connected to the outer wall of the screw column (41), and the bottom of the screw column (41) being fixedly connected to a base (42).