A kind of enameled calcium-silicon plate composite laminating equipment

Abstract

The application discloses a kind of enamel silicium calcium plate composite laminating equipment, it is related to the field of enamel silicium calcium plate processing, including mounting bracket, two chassis are fixedly connected in mounting bracket, and the placing device is fixedly connected between the two chassis, placing device includes second connecting frame, fixed plate, third air cylinder and heating mechanism, second connecting frame is provided with two, and the connecting frame is jointly installed between the two second connecting frames, the top of connecting frame is equidistantly fixedly connected with a plurality of bearing rods, fixed plate is fixedly connected between the two second connecting frames, third air cylinder is installed between fixed plate and connecting frame;The enamel silicium calcium plate composite laminating equipment, realize that the plate is evenly heated when hot pressing each area, this not only significantly improves the flatness of composite board, makes the surface of plate more smooth, regular, also enhances its weather resistance, so that plate can better resist external environmental factors, thereby greatly prolongs the service life of composite board.

Description

Technical Field

[0001] This invention relates to the field of enamel calcium silicate board processing technology, and specifically to an enamel calcium silicate board composite lamination equipment. Background Technology

[0002] The enamel-coated calcium silicate board composite lamination technology combines an enamel layer, a calcium silicate board substrate, and reinforcing materials to form a composite board that is corrosion-resistant, fireproof, moisture-proof, and high-strength.

[0003] Existing enamel-coated calcium silicate board composite lamination equipment is a specialized system that deeply integrates enamel technology with calcium silicate board production technology. In the enamel-coated calcium silicate board composite lamination production process, the hot-pressing process is crucial for ensuring product quality. Only by precisely raising the temperature to the high-temperature range of 180℃ to 200℃ and simultaneously applying high pressure conditions exceeding 70 kg / cm² can a stable and durable adhesive structure be formed between the enamel layer and the calcium silicate board substrate. However, in the actual operation of some current equipment, uneven temperature distribution in the hot-pressing system leads to significant differences in heating in different areas of the board. This localized temperature difference directly weakens the adhesive strength between the enamel layer and the substrate, thus affecting the overall flatness, weather resistance, and service life of the composite board, ultimately hindering the large-scale application of enamel-coated calcium silicate boards in high-end architectural decoration, industrial corrosion protection, and other fields. Summary of the Invention

[0004] The purpose of this invention is to provide an enamel-coated calcium silicate board composite laminating equipment to solve the problem in the prior art where uneven temperature distribution in the hot pressing system leads to significant differences in heating in different areas of the board, affecting the flatness, weather resistance and service life of the overall composite board.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an enamel-coated calcium silicate board composite laminating equipment, comprising a mounting frame, wherein two base frames are fixedly connected inside the mounting frame, and a placement device is fixedly connected between the two base frames; The placement device includes a second connecting frame, a fixing plate, a third cylinder, and a heating mechanism. There are two second connecting frames, and a connecting frame is installed between the two second connecting frames. Multiple load-bearing rods are fixedly connected at equal intervals to the top of the connecting frame. The fixing plate is fixedly connected between the two second connecting frames. The third cylinder is installed between the fixing plate and the connecting frame. The heating mechanism is installed between the connecting frames. The second connecting frames are all fixedly connected between the base frame.

[0006] Furthermore, the heating mechanism includes a connecting pipe, a horizontal pipe, a mounting base, and a heater. Multiple through pipes are fixedly inserted and connected at equal intervals on both sides of the top end of the connecting pipe. Multiple horizontal pipes are provided, and grooves are opened on both sides of the bottom end of each horizontal pipe. The horizontal pipes are fixedly inserted and connected to the outer surfaces of both sides of the connecting pipe through the grooves. The heater is installed at one end of the connecting pipe, the mounting base is installed at one end of the heater, and the connecting pipe is installed in the connecting frame.

[0007] Furthermore, the two sides of the through-tube are fixedly connected to the corresponding horizontal tube, one end of the connecting tube passes through one end of the connecting frame and is fixedly connected to the output end of the heater, and the mounting base is fixedly connected to one end of the connecting frame.

[0008] Furthermore, the top of the mounting frame is fixedly connected to two connecting rods, and the bottom middle of the two connecting rods is fixedly connected to a laminated structure. One end of the mounting frame is fixedly connected to two fixed frames on both sides. The lower part of the fixed frame is fixedly connected to a placement plate. The mounting frame and the fixed frame are fixedly connected to two fixed sides on both sides. One end of the mounting frame is fixedly connected to a control panel, and one end of the fixed frame is equipped with a control box.

[0009] Furthermore, the feeding device includes a movable frame, an electric telescopic rod, a suction device, a limiting frame, a first connecting frame, and a first cylinder. The electric telescopic rod is fixedly connected to the middle of the bottom end of the movable frame. The suction device is installed at the output end of the electric telescopic rod. There are two limiting frames, which are respectively installed at both ends of the movable frame. The first connecting frame is fixedly connected to one end of the movable frame. The output end of the first cylinder is fixedly connected to the end of the first connecting frame away from the movable frame. The limiting frames are respectively installed on both sides of the inner wall of the mounting frame and the fixed frame.

[0010] Furthermore, the first cylinder is mounted on the inner wall of the mounting bracket and the fixing bracket, and the suction device is located directly above the placement plate.

[0011] Furthermore, the movable frame includes a displacement plate, with two connecting blocks fixedly connected to both ends of the displacement plate. Three movable wheels are equidistantly mounted on the end of each connecting block away from the displacement plate. The displacement plate is fixedly connected to the electric telescopic rod.

[0012] Furthermore, the first connecting frame is fixedly connected to one end of one of the connecting blocks, and the limiting frame is movably interposed between the three movable wheels.

[0013] Furthermore, the laminated structure includes a mounting plate, a second cylinder, and limiting rods. The second cylinder is installed at the top center of the mounting plate, and its output end passes through the bottom center of the mounting plate and is fixedly connected to a movable plate. There are four limiting rods in total. The movable plate is movably inserted and connected to the outer surface of the four limiting rods. The bottom end of each limiting rod is fixedly connected to a support frame, and the upper outer surface of each limiting rod is fitted with a spring. The mounting plate is fixedly connected to the bottom center of the connecting rod.

[0014] Furthermore, the end of the support frame away from the limiting rod is fixedly connected to the mounting frame, and the top end of the limiting rod is fixedly connected to the connecting rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention achieves a balanced temperature distribution in the hot-pressing system through the coordinated operation of multiple components, including a connecting frame, load-bearing rods, heaters, connecting pipes, inserting pipes, and horizontal pipes. This ensures uniform heating across all areas of the board during hot pressing, significantly improving the flatness of the composite board, making its surface smoother and more regular. It also enhances its weather resistance, enabling the board to better withstand external environmental factors such as ultraviolet radiation, temperature changes, and humidity fluctuations, thereby greatly extending the service life of the composite board. In actual operation, when the board to be processed is placed on the placement device, multiple load-bearing rods stably support the board, ensuring its stability during subsequent heating and composite processes. The board will not shift or deform due to its own weight or slight external disturbances. The staggered distribution of the load-bearing rods and horizontal pipes allows the heat emitted from the horizontal pipes to more comprehensively and evenly cover all parts of the board, ensuring that each area of ​​the board fully absorbs heat and achieves synchronous heating, further guaranteeing the uniformity of heating.

[0016] This invention utilizes the telescopic function of the third cylinder, whose output end telescopically moves, causing the connecting frame to flip. The flipping action of the connecting frame allows the processed sheet metal to be smoothly detached from the placement device, achieving a convenient and efficient unloading operation.

[0017] This invention utilizes the coordinated operation of an electric telescopic rod, a feeder, a limiting frame, a first connecting frame, a first cylinder, and movable wheels. The electric telescopic rod and the feeder are used to pick up and place the material board, and the first cylinder and movable wheels are used to move the material board stably, thus achieving efficient and accurate feeding of the material board. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure provided for an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure provided for an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure provided for an embodiment of the present invention; Figure 6 This is a schematic diagram of the structure provided for an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure provided for an embodiment of the present invention; Figure 8 This is a structural schematic diagram provided for an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures: 1. Mounting frame; 2. Base frame; 3. Placement device; 4. Connecting rod; 5. Laminated structure; 6. Fixing frame; 7. Placement plate; 8. Feeding device; 9. Control panel; 10. Control box; 81. Movable frame; 82. Electric telescopic rod; 83. Feeder; 84. Limiting frame; 85. First connecting frame; 86. First cylinder; 811. Displacement plate; 812. Connecting block; 813. Movable wheel; 51. Mounting plate; 52. Second cylinder; 53. Movable plate; 54. Limiting rod; 55. Spring; 56. Support frame; 31. Connecting frame; 32. Second connecting frame; 33. Fixing plate; 34. Third cylinder; 35. Load-bearing rod; 36. Heating mechanism; 361. Connecting pipe; 362. Through pipe; 363. Horizontal pipe; 364. Groove; 365. Mounting base; 366. Heater. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings. Example

[0022] Please see Figure 1 - Figure 8As shown, an enamel-coated calcium silicate board composite laminating equipment includes a mounting frame 1, with two base frames 2 fixedly connected inside the mounting frame 1, and a placement device 3 fixedly connected between the two base frames 2. The placement device 3 includes a second connecting frame 32, a fixing plate 33, a third cylinder 34, and a heating mechanism 36. There are two second connecting frames 32, and a connecting frame 31 is installed between the two second connecting frames 32. Multiple load-bearing rods 35 are fixedly connected at equal intervals to the top of the connecting frame 31. The fixing plate 33 is fixedly connected between the two second connecting frames 32. The third cylinder 34 is installed between the fixing plate 33 and the connecting frame 31. The heating mechanism 36 is installed between the connecting frames 31. The second connecting frames 32 are all fixedly connected between the base frame 2. The top of the mounting frame 1 is fixedly connected to two connecting rods 4, and the middle of the bottom of the two connecting rods 4 is fixedly connected to a laminated structure 5. The two sides of one end of the mounting frame 1 are fixedly connected to a fixing frame 6. The lower part of the fixing frame 6 is fixedly connected to a placement plate 7. The two sides of the mounting frame 1 and the fixing frame 6 are fixedly connected to a feeding device 8. One end of the mounting frame 1 is fixedly connected to a control panel 9. One end of the fixing frame 6 is equipped with a control box 10. The laminated structure 5 includes a mounting plate 51, a second cylinder 52, and a limiting rod 54. The second cylinder 52 is installed at the top center of the mounting plate 51. The output end of the second cylinder 52 passes through the bottom center of the mounting plate 51 and is fixedly connected to a movable plate 53. There are four limiting rods 54. The movable plate 53 is movably inserted and connected to the outer surface of the four limiting rods 54. The bottom end of each limiting rod 54 is fixedly connected to a support frame 56. The upper outer surface of each limiting rod 54 is fitted with a spring 55. The mounting plate 51 is fixedly connected to the bottom center of the connecting rod 4. The end of the support frame 56 away from the limiting rod 54 is fixedly connected to the mounting frame 1, and the top of the limiting rod 54 is fixedly connected to the connecting rod 4.

[0023] As can be seen from the above, the temperature of the placement device 3 and the pressure of the lamination structure 5 are set through the control panel 9. The calcium silicate board coated with enamel glaze and adhesive is placed on the top of multiple load-bearing rods 35. The calcium silicate board is uniformly heated by the heat output from the heating mechanism 36. The material board is placed on the top of the placement plate 7. The feeding device 8 is started, which moves the material board and places it above the calcium silicate board. The second cylinder 52 is started. The output end of the second cylinder 52 pushes the movable plate 53 downward. When the movable plate 53 moves, it pulls the spring 55 to extend, which improves the stability of the movable plate 53. The movable plate 53 continues to move downward and composites with the material board below it to form a multi-layer structure. After the composite is completed, the movable plate 53 is reset. The third cylinder 34 is started. The output end of the third cylinder 34 is reset, thereby pushing the connecting frame 31 to rotate and unload the material. Example

[0024] refer to Figure 6 and Figure 7 As shown, the heating mechanism 36 includes a connecting pipe 361, a horizontal pipe 363, a mounting base 365, and a heater 366. Multiple through pipes 362 are fixedly inserted and connected at equal intervals on both sides of the top end of the connecting pipe 361. Multiple horizontal pipes 363 are provided, and grooves 364 are opened on both sides of the bottom end of the multiple horizontal pipes 363. The horizontal pipes 363 are fixedly inserted and connected to the outer surfaces of both sides of the connecting pipe 361 through the grooves 364. The heater 366 is installed at one end of the connecting pipe 361, and the mounting base 365 is installed at one end of the heater 366. The connecting pipe 361 is installed in the connecting frame 31.

[0025] As can be seen from the above, the gas heated by heater 366 is introduced into connecting pipe 361, then into horizontal pipe 363 through insertion pipe 362, and then discharged through horizontal pipe 363. The calcium silicate board coated with enamel glaze and adhesive is placed on the top of multiple load-bearing rods 35, and the heat discharged through horizontal pipe 363 is used to uniformly heat the calcium silicate board.

[0026] Preferably, both sides of the through tube 362 are fixedly connected to the corresponding horizontal tube 363, one end of the connecting tube 361 passes through one end of the connecting frame 31 and is fixedly connected to the output end of the heater 366, and the mounting base 365 is fixedly connected to one end of the connecting frame 31.

[0027] As can be seen from the above, the heat in the connecting pipe 361 can be transferred to the horizontal pipe 363 through the insertion pipe 362. Example

[0028] refer to Figure 3 , Figure 4 and Figure 5 As shown, the feeding device 8 includes a movable frame 81, an electric telescopic rod 82, a suction device 83, a limiting frame 84, a first connecting frame 85, and a first cylinder 86. The electric telescopic rod 82 is fixedly connected to the middle of the bottom end of the movable frame 81. The suction device 83 is installed at the output end of the electric telescopic rod 82. There are two limiting frames 84, and the two limiting frames 84 are respectively installed at both ends of the movable frame 81. The first connecting frame 85 is fixedly connected to one end of the movable frame 81. The output end of the first cylinder 86 is fixedly connected to the end of the first connecting frame 85 away from the movable frame 81. The limiting frames 84 are respectively installed on both sides of the inner wall of the mounting frame 1 and the fixed frame 6. The movable frame 81 includes a displacement plate 811, with two connecting blocks 812 fixedly connected to both ends of the displacement plate 811. Three movable wheels 813 are equidistantly installed on the end of the connecting blocks 812 away from the displacement plate 811. The displacement plate 811 is fixedly connected to the electric telescopic rod 82.

[0029] As can be seen from the above, when the suction device 83 and the electric telescopic rod 82 are activated, the output end of the electric telescopic rod 82 extends and pushes the suction device 83, which is fixedly connected to it, to move downward. The suction device 83 picks up the material plate on the placement plate 7, and then the electric telescopic rod 82 resets the suction device 83. The first cylinder 86 is activated, and the output end of the first cylinder 86 extends and pushes the first connecting frame 85, which is fixedly connected to it, to move. The first connecting frame 85 pulls the connecting block 812, which is fixedly connected to it, to move. At the same time, the movable wheel 813, which is movably connected to the connecting block 812, rolls, which improves the flexibility of the moving connecting block 812. At the same time, due to the limiting of the movable wheel 813, the stability of the displacement plate 811 is improved, thereby driving the material plate to move. After moving to directly above the calcium silicate plate, the suction device 83 and the electric telescopic rod 82 place the material plate above the calcium silicate plate, and then the first cylinder 86 resets the movable frame 81.

[0030] Preferably, the first cylinder 86 is installed on the inner wall of the mounting bracket 1 and the fixing bracket 6, and the suction device 83 is located directly above the placement plate 7; The first connecting frame 85 is fixedly connected to one end of one of the connecting blocks 812, and the limiting frame 84 is movably interlocked between the three movable wheels 813.

[0031] As can be seen from the above, the first connecting frame 85 can drive the connecting block 812 to move, and the suction device 83 can be used to pick up the material.

[0032] Furthermore, this invention is designed and applied to the processing of enamel calcium silicate boards. In actual operation, the operator first needs to use the control panel 9 to precisely set the temperature of the placement device 3 and the pressure of the lamination structure 5. After the settings are completed, the heater 366 starts to work, and the heated gas is introduced into the connecting pipe 361. Subsequently, this gas smoothly enters the horizontal pipe 363 through the insertion pipe 362, which is fixedly connected to the connecting pipe 361, and is finally discharged through the horizontal pipe 363. At the same time, the staff placed the calcium silicate board coated with enamel glaze and adhesive on the top of multiple load-bearing rods 35. At this time, the heat from the horizontal tube 363 was evenly distributed to heat the calcium silicate board, ensuring that the calcium silicate board was heated evenly, in preparation for the subsequent composite process. While the calcium silicate board is ready, the material board is placed on top of the placement plate 7. Next, the staff starts the suction device 83 and the electric telescopic rod 82. The output end of the electric telescopic rod 82 begins to extend, pushing the suction device 83 to move slowly downward. When the suction device 83 reaches the appropriate position, it quickly and firmly picks up the material board on the placement plate 7. Then, the electric telescopic rod 82 moves again, causing the suction device 83 to reset and return to the initial height with the picked-up material board. Then, the first cylinder 86 is started, and the output end of the first cylinder 86 slowly extends, pushing the first connecting frame 85 to move. During the movement of the first connecting frame 85, the connecting block 812 is pulled to move together. At this time, the movable wheel 813, which is movably connected to the connecting block 812, begins to roll. This rolling method not only greatly improves the flexibility of the movement of the connecting block 812, but also further improves the stability of the displacement plate 811 due to the limiting effect of the movable wheel 813. Driven by the displacement plate 811, the material plate also moves. When the material plate moves to the top of the calcium silicate board, the operator operates the suction device 83 and the electric telescopic rod 82 again to accurately place the material plate on top of the calcium silicate board. After placement, the movable frame 81 is reset by the first cylinder 86 to prepare for the next process. Next, the second cylinder 52 is activated, and the output end of the second cylinder 52 begins to push the movable plate 53 downward. During the movement of the movable plate 53, the spring 55 is gradually stretched. This stretching not only buffers the impact force of the falling movable plate 53, but also further improves the stability of the movement of the movable plate 53. The movable plate 53 continues to move downward, and finally performs a composite operation on the material plate below it, so that the material plate and the calcium silicate plate are tightly combined to form a multi-layer structure. After the composite process is completed, the movable plate 53 is reset under the action of the second cylinder 52. Finally, the third cylinder 34 is started, and the output end of the third cylinder 34 begins to reset, pushing the connecting frame 31 to rotate, thereby realizing the unloading operation.

[0033] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A composite laminating equipment for enamel-coated calcium silicate boards, comprising a mounting frame (1), characterized in that, The mounting bracket (1) has two base frames (2) fixedly connected inside, and the two base frames (2) are fixedly connected together by a placement device (3). The placement device (3) includes a second connecting frame (32), a fixing plate (33), a third cylinder (34), and a heating mechanism (36). There are two second connecting frames (32), and a connecting frame (31) is installed between the two second connecting frames (32). Multiple load-bearing rods (35) are fixedly connected at equal distances to the top of the connecting frame (31). The fixing plate (33) is fixedly connected between the two second connecting frames (32). The third cylinder (34) is installed between the fixing plate (33) and the connecting frame (31). The heating mechanism (36) is installed between the connecting frames (31). The second connecting frames (32) are all fixedly connected between the base frame (2).

2. The enamel-coated calcium silicate board composite laminating equipment according to claim 1, characterized in that, The heating mechanism (36) includes a connecting pipe (361), a horizontal pipe (363), a mounting base (365), and a heater (366). Multiple through pipes (362) are fixedly connected to the outer surfaces of the top two sides of the connecting pipe (361) at equal distances. Multiple horizontal pipes (363) are provided, and grooves (364) are opened on both sides of the bottom end of the multiple horizontal pipes (363). The horizontal pipes (363) are fixedly connected to the outer surfaces of the two sides of the connecting pipe (361) through the grooves (364). The heater (366) is installed at one end of the connecting pipe (361), and the mounting base (365) is installed at one end of the heater (366). The connecting pipe (361) is installed in the connecting frame (31).

3. The enamel-coated calcium silicate board composite laminating equipment according to claim 2, characterized in that, Both sides of the insertion tube (362) are fixedly inserted and connected to the corresponding horizontal tube (363). One end of the connecting tube (361) passes through one end of the connecting frame (31) and is fixedly connected to the output end of the heater (366). The mounting base (365) is fixedly connected to one end of the connecting frame (31).

4. The enamel-coated calcium silicate board composite laminating equipment according to claim 1, characterized in that, The top of the mounting frame (1) is fixedly connected to two connecting rods (4), and the bottom middle of the two connecting rods (4) is fixedly connected to a laminated structure (5). The two sides of one end of the mounting frame (1) are fixedly connected to a fixing frame (6). The lower part of the fixing frame (6) is fixedly connected to a placement plate (7). The two sides of the mounting frame (1) and the fixing frame (6) are fixedly connected to a feeding device (8). One end of the mounting frame (1) is fixedly connected to a control panel (9), and one end of the fixing frame (6) is equipped with a control box (10).

5. The enamel-coated calcium silicate board composite laminating equipment according to claim 4, characterized in that, The feeding device (8) includes a movable frame (81), an electric telescopic rod (82), a suction device (83), a limiting frame (84), a first connecting frame (85), and a first cylinder (86). The electric telescopic rod (82) is fixedly connected to the middle of the bottom end of the movable frame (81). The suction device (83) is installed at the output end of the electric telescopic rod (82). There are two limiting frames (84), and the two limiting frames (84) are respectively installed at both ends of the movable frame (81). The first connecting frame (85) is fixedly connected to one end of the movable frame (81). The output end of the first cylinder (86) is fixedly connected to the end of the first connecting frame (85) away from the movable frame (81). The limiting frames (84) are respectively installed on both sides of the inner wall of the mounting frame (1) and the fixed frame (6).

6. The enamel-coated calcium silicate board composite laminating equipment according to claim 5, characterized in that, The first cylinder (86) is installed on the inner wall of the mounting bracket (1) and the fixing bracket (6), and the feeder (83) is located directly above the placement plate (7).

7. The enamel-coated calcium silicate board composite laminating equipment according to claim 5, characterized in that, The movable frame (81) includes a displacement plate (811), with two connecting blocks (812) fixedly connected to both ends of the displacement plate (811). Three movable wheels (813) are equidistantly installed on the end of the connecting block (812) away from the displacement plate (811). The displacement plate (811) is fixedly connected to the electric telescopic rod (82).

8. The enamel-coated calcium silicate board composite laminating equipment according to claim 5, characterized in that, The first connecting frame (85) is fixedly connected to one end of one of the connecting blocks (812), and the limiting frame (84) is movably interlocked between the three movable wheels (813).

9. The enamel-coated calcium silicate board composite laminating equipment according to claim 4, characterized in that, The laminated structure (5) includes a mounting plate (51), a second cylinder (52), and a limiting rod (54). The second cylinder (52) is installed at the top center of the mounting plate (51). The output end of the second cylinder (52) passes through the bottom center of the mounting plate (51) and is fixedly connected to a movable plate (53). There are four limiting rods (54). The movable plate (53) is movably inserted and connected to the outer surface of the four limiting rods (54). The bottom end of each limiting rod (54) is fixedly connected to a support frame (56). The upper outer surface of each limiting rod (54) is fitted with a spring (55). The mounting plate (51) is fixedly connected to the bottom center of the connecting rod (4).

10. The enamel-coated calcium silicate board composite laminating equipment according to claim 9, characterized in that, The support frame (56) is located away from the limiting rod (54) and is fixedly connected to the mounting frame (1). The top of the limiting rod (54) is fixedly connected to the connecting rod (4).

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