Carbon fiber composite material conveying device

The carbon fiber composite transport device addresses roll damage issues by using a fixed mechanism and support system to stabilize and secure rolls of varying sizes, improving transport efficiency.

CN223100770UActive Publication Date: 2025-07-15SHAANXI SIFANG UNITED RAIL TRANSIT EQUIP CO LTD
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Patent Information

Application Number
CN202421880141.2
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-08-05
Publication Date
2025-07-15
Estimated Expiration
2034-08-05

AI Technical Summary

Technical Problem

The existing carbon fiber composite material transportation devices are prone to damage and drop of carbon fiber composite material during transportation, reducing the transportation effect.

Method used

A carbon fiber composite material transportation device including a fixing mechanism and a support mechanism is designed. The L-shaped plate clamping and positioning rod are inserted into the reel through a motor drive, and the support plate is combined with the support plate to tighten the inner circular surface of the reel to achieve the fixation of carbon fiber composite material of different lengths and diameters.

Benefits of technology

It effectively prevents movement and damage of carbon fiber composite coils during transportation, improves transportation stability and applicability, and is suitable for coils of different sizes.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a carbon fiber composite material transporting device, which belongs to the technical field of carbon fiber composite material processing and comprises a mounting flat plate, universal wheels which are uniformly distributed are fixedly connected to the lower surface of the mounting flat plate, and a handle is fixedly connected to one side of the upper surface of the mounting flat plate. A plurality of sets of evenly-distributed fixing mechanisms are arranged on the upper surface of the mounting flat plate, and each fixing mechanism comprises a first sliding groove formed in the other side of the upper surface of the mounting flat plate. By arranging the fixing mechanism, the carbon fiber composite coil stock is clamped and fixed through the two L-shaped plates, and meanwhile, the positioning rod is inserted into the winding drum of the carbon fiber composite coil stock, so that the carbon fiber composite coil stock is fixed on the mounting flat plate, and the carbon fiber composite coil stock can be prevented from moving on the mounting flat plate during transportation; and therefore, the transportation of the carbon fiber composite coil material is facilitated, and the transportation effect of the transportation device on the carbon fiber composite coil material is improved.
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Description

Technical Field

[0001] The utility model relates to the technical field of carbon fiber composite material processing, in particular to a carbon fiber composite material transportation device. Background Technique

[0002] Carbon fiber composite material is an inorganic high-performance fiber transformed from organic fiber through a series of heat treatments, with a carbon content higher than 90%. It is a new material with excellent mechanical properties, having the inherent nature characteristics of carbon materials and also possessing the soft processability of textile fibers, and is a new generation of reinforcing fibers. Carbon fiber was initially developed to meet the needs of rocket, aerospace, and aviation and other cutting-edge science and technology, and later was widely used in sports equipment, textiles, chemical machinery, and the medical field.

[0003] When the existing carbon fiber composite material transportation device is in use, most of them are convenient for transporting carbon fiber composite material sheets. When the transportation device transports carbon fiber composite material coils, because the coils are easy to roll inside the transportation device, multiple coils are prone to collide with each other, which easily causes damage to the carbon fiber composite material coils and easily makes the carbon fiber composite material coils fall out of the transportation device, reducing the transportation effect of the carbon fiber composite material transportation device on the carbon fiber composite material coils. Summary of the Invention

[0004] The purpose of the utility model is to provide a carbon fiber composite material transportation device, which can solve the problem that the carbon fiber composite material coils are easily damaged when the transportation device transports the carbon fiber composite material coils.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A carbon fiber composite material transportation device includes a mounting flat plate. The lower surface of the mounting flat plate is fixedly connected with evenly distributed universal wheels. One side of the upper surface of the mounting flat plate is fixedly connected with a handle. The upper surface of the mounting flat plate is provided with several groups of evenly distributed fixing mechanisms. The fixing mechanism includes a first chute opened on the other side of the upper surface of the mounting flat plate;

[0006] Two first sliders are slidably connected inside the first chute. The upper surfaces of the two first sliders are fixedly connected with L-shaped plates. The opposite sides of the outer surfaces of the two L-shaped plates are respectively provided with second chutes. Two second sliders are slidably connected inside the two second chutes. One side of the outer surfaces of the two second sliders is fixedly connected with positioning rods.

[0007] Preferably, a support mechanism is provided on the outer cylindrical surface of the positioning rod. The support mechanism includes a number of uniformly distributed second mounting grooves formed on the outer cylindrical surface of the positioning rod. A fourth chute is formed on the inner lower surface of each of the second mounting grooves. A third slider is slidably connected inside each of the fourth chutes. The upper end of the third slider is rotatably connected to a first connecting plate. One end of the first connecting plate is rotatably connected to a support plate. One side of the inner surface of the second mounting groove is rotatably connected to a second connecting plate, and one end of the second connecting plate is rotatably connected to the support plate. A number of uniformly distributed fifth chutes are formed on the outer cylindrical surface of the positioning rod near the second mounting grooves, and the fifth chutes and the second mounting grooves are located on the same straight line. A fourth slider is slidably connected inside each of the fifth chutes. One end of the fourth slider is fixedly connected to an annular plate, and the inner circular surface of the annular plate slides on the outer cylindrical surface of the positioning rod. A straight rod is fixedly connected between the fourth slider and the third slider.

[0008] Preferably, a flexible pad is fixedly connected to the upper surface of the support plate, and the flexible pad is made of rubber. A second spring is provided on the outer cylindrical surface of the straight rod, and the second spring is located inside the fourth chute.

[0009] Preferably, a support rod is fixedly connected to the outer surface of the L-shaped plate on the side away from the second chute.

[0010] Preferably, a storage battery is fixedly connected to the upper surface of the mounting flat plate near the handle. A control switch is provided on the upper surface of the mounting flat plate near the first chute, and the control switch is electrically connected to the storage battery.

[0011] Preferably, a first motor is fixedly connected to one side of the outer surface of the mounting flat plate, and the first motor is electrically connected to the storage battery through the control switch. The output end of the first motor is fixedly connected to a bidirectional threaded rod passing through the first chute, and the bidirectional threaded rod passes through the two first sliders and is threadedly connected to the two first sliders.

[0012] Preferably, a second motor is fixedly connected to the upper surface of the L-shaped plate, and the second motor is electrically connected to the storage battery through the control switch. The output end of the second motor is fixedly connected to a threaded rod passing through the second chute, and the threaded rod passes through the second slider and is threadedly connected to the second slider.

[0013] Preferably, a first mounting groove is provided at the middle position of the upper surface of the mounting flat plate in the first chute. Third chutes are formed on both sides of the inner lower surface of the first mounting groove. Two sliding plates are slidably connected inside the two third chutes. An arc-shaped support plate is fixedly connected to the upper surfaces of the two sliding plates, and the arc-shaped support plate is slidably connected to the first mounting groove. Three first springs are provided on the lower surfaces of the two sliding plates.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] 1. By means of the fixed mechanism provided in this application, the first motor can drive two L-shaped plates to move closer to each other, thereby clamping and fixing the carbon fiber composite material coil. At the same time, the positioning rod is inserted into the winding drum of the carbon fiber composite material coil, so that the carbon fiber composite material coil is fixed on the installation flat plate, which can prevent the carbon fiber composite material coil from moving on the installation flat plate during transportation. Furthermore, it facilitates the transportation of the carbon fiber composite material coil, improves the transportation effect of the transportation device on the carbon fiber composite material coil, and the L-shaped plates can fix carbon fiber composite material coils of different lengths. At the same time, the positioning rod can be inserted into the winding drums of carbon fiber composite material coils with different diameters, which can achieve a better fixing effect on carbon fiber composite material coils of different lengths and diameters, and improves the practicability of the fixed mechanism;

[0016] 2. By means of the support mechanism provided in this application, when the positioning rod is inserted into the winding drum, the winding drum can drive the annular plate to move, thereby driving the support plate to move towards the inner circular surface of the winding drum, so that the support plate can be tightly pressed against the inner circular surface of the winding drum, enabling the positioning rod to fix winding drums with different inner diameters, improving the fixing effect of the positioning rod on the winding drum, and further enhancing the use effect of the fixed mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is the overall structural view of the present invention;

[0019] Figure 2 is the sectional structural view of the fixed mechanism of the present invention;

[0020] Figure 3 is the sectional structural view of the support mechanism of the present invention;

[0021] Figure 4 is the Figure 3 enlarged structural view of A in the present invention;

[0022] Figure 5 is the partial sectional structural view of the fixed mechanism of the present invention;

[0023] Figure 6 is the Figure 5 enlarged structural view of B in the present invention.

[0024] Explanation of reference numerals:

[0025] 1. Installation flat plate; 2. Fixing mechanism; 21. First chute; 22. Bidirectional threaded rod; 23. First motor; 24. First slider; 25. L-shaped plate; 26. Support rod; 27. Second chute; 28. Second slider; 29. Threaded rod; 210. Second motor; 211. Positioning rod; 212. Battery; 213. Control switch; 214. First installation groove; 215. Third chute; 216. Arc-shaped support plate; 217. Slide plate; 218. First spring; 3. Support mechanism; 31. Second installation groove; 32. Fourth chute; 33. Third slider; 34. First connecting plate; 35. Second connecting plate; 36. Support plate; 37. Fifth chute; 38. Fourth slider; 39. Straight rod; 310. Second spring; 311. Ring-shaped plate. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1 to 6 , the present invention provides a technical solution:

[0028] A carbon fiber composite material transportation device includes an installation flat plate 1. The lower surface of the installation flat plate 1 is fixedly connected with uniformly distributed universal wheels. One side of the upper surface of the installation flat plate 1 is fixedly connected with a handle. The upper surface of the installation flat plate 1 is provided with several groups of uniformly distributed fixing mechanisms 2. The fixing mechanism 2 includes a first chute 21 opened on the other side of the upper surface of the installation flat plate 1;

[0029] Two first sliders 24 are slidably connected inside the first chute 21. The upper surfaces of the two first sliders 24 are fixedly connected with L-shaped plates 25. On the opposite sides of the outer surfaces of the two L-shaped plates 25, second chutes 27 are opened. Two second sliders 28 are slidably connected inside the two second chutes 27. One side of the outer surfaces of the two second sliders 28 is fixedly connected with positioning rods 211.

[0030] Specifically, as Figure 2 shown, a support rod 26 is fixedly connected to the side of the outer surface of the L-shaped plate 25 away from the second chute 27.

[0031] Specifically, as Figure 2As shown, a storage battery 212 is fixedly connected to one side of the upper surface of the installation flat plate 1 close to the handle. A control switch 213 is provided on one side of the upper surface of the installation flat plate 1 close to the first sliding groove 21, and the control switch 213 is electrically connected to the storage battery 212.

[0032] Specifically, as Figure 2 shown, a first motor 23 is fixedly connected to one side of the outer surface of the installation flat plate 1, and the first motor 23 is electrically connected to the storage battery 212 through the control switch 213. The output end of the first motor 23 is fixedly connected to a bidirectional threaded rod 22 passing through the first sliding groove 21, and the bidirectional threaded rod 22 passes through two first sliding blocks 24 and is threadedly connected to the two first sliding blocks 24.

[0033] Specifically, as Figure 3 shown, a second motor 210 is fixedly connected to the upper surface of the L-shaped plate 25, and the second motor 210 is electrically connected to the storage battery 212 through the control switch 213. The output end of the second motor 210 is fixedly connected to a threaded rod 29 passing through the second sliding groove 27, and the threaded rod 29 passes through the second sliding block 28 and is threadedly connected to the second sliding block 28.

[0034] When the existing transportation device transports the carbon fiber composite material coil, it is easy to damage the carbon fiber composite material coil. Therefore, a fixing mechanism 2 is provided. When in use, first place the carbon fiber composite material coil on the installation flat plate 1, then move the carbon fiber composite material coil to the position of the fixing mechanism 2, and then start the first motor 23 to drive the bidirectional threaded rod 22 to rotate, thereby driving the two first sliding blocks 24 to move closer to each other inside the first sliding groove 21, and further driving the two L-shaped plates 25 to move closer to each other, so that the two L-shaped plates 25 are in tight contact with both ends of the winding drum, thereby clamping and fixing the carbon fiber composite material coil. The carbon fiber composite material coil can be fixed on the installation flat plate 1, which can prevent the carbon fiber composite material coil from moving on the installation flat plate 1 during transportation, and further facilitate the transportation of the carbon fiber composite material coil, improving the transportation effect of the transportation device on the carbon fiber composite material coil. At the same time, the two L-shaped plates 25 drive the two positioning rods 211 to move closer to each other, so that the two positioning rods 211 can be inserted into the winding drum of the carbon fiber composite material coil, which can further prevent the carbon fiber composite material coil from moving, thereby further improving the transportation effect of the transportation device on the carbon fiber composite material coil.

[0035] Meanwhile, as the two first sliders 24 drive the two L-shaped plates 25 to move, the distance between the two L-shaped plates 25 can be adjusted, so that the fixing mechanism 2 can fix carbon fiber composite material coils of different lengths. At the same time, the second motor 210 can drive the threaded rod 29 to rotate, thereby driving the first slider 24 to move up and down, and then driving the positioning rod 211 to move up and down, so that the positioning rod 211 can be inserted into the winding drums of carbon fiber composite material coils with different diameters, thus achieving a better fixing effect on carbon fiber composite material coils of different lengths and diameters, and improving the practicability of the fixing mechanism 2.

[0036] The storage battery 212 supplies power to the first motor 23 and the second motor 210. At the same time, the control switch 213 facilitates the control of the first motor 23 and the second motor 210.

[0037] Specifically, as Figure 3 、 Figure 4 shown, a support mechanism 3 is arranged on the outer cylindrical surface of the positioning rod 211. The support mechanism 3 includes a plurality of groups of second installation grooves 31 uniformly distributed on the outer cylindrical surface of the positioning rod 211. The inner lower surfaces of the second installation grooves 31 are respectively provided with fourth chutes 32. Third sliders 33 are slidably connected inside the fourth chutes 32. The upper ends of the third sliders 33 are rotatably connected with first connecting plates 34. One end of the first connecting plate 34 is rotatably connected with a support plate 36. One side of the inner surface of the second installation groove 31 is rotatably connected with a second connecting plate 35, and one end of the second connecting plate 35 is rotatably connected with the support plate 36. A plurality of groups of fifth chutes 37 uniformly distributed are arranged on the outer cylindrical surface of the positioning rod 211 close to the second installation grooves 31, and the fifth chutes 37 and the second installation grooves 31 are located on the same straight line. Fourth sliders 38 are slidably connected inside the fifth chutes 37. One end of the fourth slider 38 is fixedly connected with an annular plate 311, and the inner circular surface of the annular plate 311 slides on the outer cylindrical surface of the positioning rod 211. A straight rod 39 is fixedly connected between the fourth slider 38 and the third slider 33.

[0038] Specifically, as Figure 4 shown, a flexible pad is fixedly connected to the upper surface of the support plate 36, and the flexible pad is made of rubber material. A second spring 310 is arranged on the outer cylindrical surface of the straight rod 39, and the second spring 310 is located inside the fourth chute 32.

[0039] In the above embodiment, since the diameter of the positioning rod 211 is fixed, but the inner diameters of the winding drums of different carbon fiber composite material coils are different, the supporting mechanism 3 is provided. When the positioning rod 211 is inserted into the winding drum, when the winding drum abuts against the annular plate 311, it can drive the annular plate 311 to move towards the direction of the second slider 28, thereby driving the fourth slider 38 to move towards the direction of the second slider 28 inside the fifth chute 37. At the same time, the third slider 33 is driven to move towards the direction of the fifth chute 37 inside the fourth chute 32 through the straight rod 39, thereby driving the first connecting plate 34 to move. At the same time, the second connecting plate 35 rotates in the second installation groove 31, and both the first connecting plate 34 and the second connecting plate 35 are rotatably connected to the support plate 36. Thus, through the cooperation of the first connecting plate 34 and the second connecting plate 35, the support plate 36 can be driven to move out of the second installation groove 31, so that the support plate 36 can abut against the inner circular surface of the winding drum, enabling the positioning rod 211 to fix the winding drums with different inner diameters, improving the fixing effect of the positioning rod 211 on the winding drum, and further improving the use effect of the fixing mechanism 2. Moreover, a flexible pad is fixedly connected to the upper surface of the support plate 36, enabling the support plate 36 to better abut against the inner circular surface of the winding drum and improving the use effect of the support plate 36. At the same time, the second spring 310 can drive the third slider 33 to move away from the fifth chute 37, so that the support plate 36 moves into the second installation groove 31, facilitating the next use of the supporting mechanism 3.

[0040] Specifically, as Figure 5 、 Figure 6 shown, a first installation groove 214 is opened at the position in the middle of the upper surface of the installation flat plate 1 within the first chute 21. Both sides of the inner lower surface of the first installation groove 214 are provided with third chutes 215. Slide plates 217 are slidably connected inside both of the third chutes 215. A common upper surface of the two slide plates 217 is fixedly connected with an arc-shaped support plate 216, and the arc-shaped support plate 216 is slidably connected to the first installation groove 214. Three first springs 218 are arranged on the lower surfaces of both of the slide plates 217.

[0041] When placing the carbon fiber composite material coil on the installation flat plate 1, the arc-shaped support plate 216 can lift the carbon fiber composite material coil, preventing it from rolling on the installation flat plate 1, enabling the carbon fiber composite material coil to accurately stop at the position of the fixing mechanism 2, thus facilitating the use of the fixing mechanism 2. Moreover, the arc-shaped support plate 216 is slidably connected to the first installation groove 214, allowing the arc-shaped support plate 216 to move into the first installation groove 214, enabling the carbon fiber composite material coil to roll on the installation flat plate 1, thus facilitating the removal of the carbon fiber composite material coil from the installation flat plate 1. At the same time, the first spring 218 drives the sliding plate 217 to move upward in the third sliding groove 215, thereby driving the arc-shaped support plate 216 to move upward, facilitating the use of the arc-shaped support plate 216.

[0042] Working principle: When this application is in use, first place the carbon fiber composite material coil on the installation flat plate 1, and then the arc-shaped support plate 216 can lift the carbon fiber composite material coil, enabling the carbon fiber composite material coil to accurately stop at the position of the fixing mechanism 2. Then start the first motor 23 to drive the two L-shaped plates 25 to move closer to each other, clamping and fixing the carbon fiber composite material coil. At the same time, make the two positioning rods 211 insert into the winding cylinder of the carbon fiber composite material coil, and at the same time make the winding cylinder abut against the annular plate 311, which can drive the annular plate 311 to move in a certain direction. Then, through the fourth slider 38 and the straight rod 39, the third slider 33 can be driven to move, thereby driving the first connecting plate 34 to move. At the same time, through the cooperation of the first connecting plate 34 and the second connecting plate 35, the support plate 36 can be driven to move out of the second installation groove 31, so that the support plate 36 can abut against the inner circular surface of the winding cylinder, thus fixing the carbon fiber composite material coil.

[0043] Finally, it should be noted that: The above embodiments are only used to illustrate the technical solutions of the present invention, not to limit it; Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: They can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; And these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A carbon fiber composite material transportation device, including a mounting flat plate (1), the lower surface of the mounting flat plate (1) is fixedly connected with uniformly distributed universal wheels, and one side of the upper surface of the mounting flat plate (1) is fixedly connected with a handle, characterized in that: On the upper surface of the installation flat plate (1), there are arranged a number of uniformly distributed fixing mechanisms (2), and the fixing mechanism (2) includes a first sliding groove (21) opened on the other side of the upper surface of the installation flat plate (1); Two first sliding blocks (24) are slidably connected inside the first sliding groove (21). L-shaped plates (25) are fixedly connected to the upper surfaces of the two first sliding blocks (24). Second sliding grooves (27) are opened on the opposite sides of the outer surfaces of the two L-shaped plates (25). Two second sliding blocks (28) are slidably connected inside the two second sliding grooves (27). Positioning rods (211) are fixedly connected to one sides of the outer surfaces of the two second sliding blocks (28).

2. The carbon fiber composite material transportation device according to claim 1, characterized in that: A supporting mechanism (3) is arranged on the outer circular surface of the positioning rod (211). The supporting mechanism (3) includes a number of uniformly distributed second installation grooves (31) opened on the outer circular surface of the positioning rod (211). Fourth sliding grooves (32) are opened on the lower surfaces inside the second installation grooves (31). Third sliding blocks (33) are slidably connected inside the fourth sliding grooves (32). A first connecting plate (34) is rotatably connected to the upper ends of the third sliding blocks (33). One end of the first connecting plate (34) is rotatably connected to a supporting plate (36). A second connecting plate (35) is rotatably connected to one side of the inner surface of the second installation groove (31), and one end of the second connecting plate (35) is rotatably connected to the supporting plate (36). A number of uniformly distributed fifth sliding grooves (37) are opened on the outer circular surface of the positioning rod (211) close to the second installation groove (31), and the fifth sliding grooves (37) and the second installation groove (31) are on the same straight line. Fourth sliding blocks (38) are slidably connected inside the fifth sliding grooves (37). An annular plate (311) is fixedly connected to one end of the fourth sliding block (38), and the inner circular surface of the annular plate (311) slides on the outer circular surface of the positioning rod (211). A straight rod (39) is fixedly connected between the fourth sliding block (38) and the third sliding block (33).

3. The carbon fiber composite material transportation device according to claim 2, wherein: A flexible pad is fixedly connected to the upper surface of the supporting plate (36), and the flexible pad is made of rubber. A second spring (310) is arranged on the outer circular surface of the straight rod (39), and the second spring (310) is located inside the fourth sliding groove (32).

4. A carbon fiber composite material transportation device according to claim 1, characterized in that: A support rod (26) is fixedly connected to the outer surface of the L-shaped plate (25) far from the second sliding groove (27).

5. A carbon fiber composite material transportation device according to claim 1, characterized in that: A storage battery (212) is fixedly connected to the upper surface of the installation flat plate (1) close to the handle. A control switch (213) is opened on the upper surface of the installation flat plate (1) close to the first sliding groove (21), and the control switch (213) is electrically connected to the storage battery (212).

6. The carbon fiber composite material transportation device according to claim 5, characterized in that: One side of the outer surface of the mounting flat plate (1) is fixedly connected with a first motor (23), and the first motor (23) is electrically connected to the storage battery (212) through a control switch (213). The output end of the first motor (23) is fixedly connected with a bidirectional threaded rod (22) penetrating through the first sliding groove (21), and the bidirectional threaded rod (22) penetrates through two first sliding blocks (24) and is threadedly connected to the two first sliding blocks (24).

7. The carbon fiber composite material transportation device according to claim 5, characterized in that: The upper surface of the L-shaped plate (25) is fixedly connected with a second motor (210), and the second motor (210) is electrically connected to the storage battery (212) through a control switch (213). The output end of the second motor (210) is fixedly connected with a threaded rod (29) penetrating through the second sliding groove (27), and the threaded rod (29) penetrates through the second sliding block (28) and is threadedly connected to the second sliding block (28).

8. The carbon fiber composite material transportation device according to claim 1, characterized in that: A first installation groove (214) is formed in the middle position of the upper surface of the mounting flat plate (1) and corresponding to the first sliding groove (21). On both sides of the inner lower surface of the first installation groove (214), third sliding grooves (215) are formed. Two sliding plates (217) are slidably connected to the interiors of the two third sliding grooves (215). The upper surfaces of the two sliding plates (217) are fixedly connected together with an arc-shaped support plate (216), and the arc-shaped support plate (216) is slidably connected to the first installation groove (214). Three first springs (218) are arranged on the lower surfaces of the two sliding plates (217).