Mounting device for architectural glass

Abstract

The utility model provides a kind of installer for building glass, it is related to building construction technology field, specifically including base, the top of base is slidably connected with pedestal, the top of pedestal is provided with first L type side plate and second L type side plate, the inside of first L type side plate and second L type side plate is respectively fixedly installed with first L type pipeline and second L type pipeline, first L type side plate is fixedly installed with connecting pipe in the side close to second L type side plate.The application is slidably matched by connecting pipe and L type pipeline, combined with cross-shaped slider drives suction cup transverse sliding and the increase and decrease of the number of suction cup, realize multidimensional adjustment, can more flexibly adapt to different size, shape glass, and by pressure regulating valve and suction cup pneumatic communication, each suction cup pressure can be accurately controlled independently, cooperate with elastic buffer pad, can ensure that glass stress is uniform, avoid local stress too large and lead to fragmentation, can also reduce damage to glass surface when adsorbing.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, specifically to an installer for architectural glass. Background Technology

[0002] In the construction industry, glass installation is an operation that demands extremely high precision and safety. Traditional architectural glass installation mainly relies on manual labor with simple tools (such as suction cups, crowbars, and hand hoists). With the development of the construction industry, higher requirements have been placed on the efficiency, precision, and adaptability of installation processes.

[0003] Chinese Patent Publication No. CN222449160U discloses an architectural glass installer, including a fixing component, an installation component, and a main component. The fixing component includes a fixing frame, a first sliding groove, a first slider, a positioning pin, a telescopic rod, a spring, a positioning hole, a U-shaped plate, bolts, and a fixing plate. The fixing frame has a first sliding groove on one side, and one side of the first slider is slidably connected to the inside of the first sliding groove. A positioning pin is installed on one side of the first slider. This invention controls the movement of the first slider within the first sliding groove, causing the first slider to move the U-shaped plate. The positioning pin and positioning hole fix the position of the U-shaped plate. By rotating the screw to move the fixing plate, the glass body placed within the window frame can be fixed. Workers do not need to move back and forth when applying sealant, thus improving work efficiency and reducing the workload of workers.

[0004] In the existing technology, during the use of an architectural glass installer, the position of the U-shaped plate is adjusted by the movement of the first slider in the first groove, and the glass is fixed by the movement of the fixing plate driven by the screw. This has poor adaptability to glass of different sizes and shapes. When encountering non-standard sizes or irregularly shaped glass, it may be difficult to achieve stable fixing through the existing adjustment structure, resulting in a narrow range of applications. Therefore, we have made improvements and proposed an installer for architectural glass. Utility Model Content

[0005] The purpose of this utility model is to address the problem that the current architectural glass installer has limited adjustment dimensions and insufficient adaptability.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] An installer for architectural glass achieves multi-dimensional adjustment through a sliding fit between a connecting pipe and an L-shaped pipe, and a cross-shaped slider that drives the suction cup to slide laterally. The number of suction cups can be increased or decreased, allowing for flexible adaptation to glass of different sizes and shapes, thus improving the aforementioned problems.

[0008] The application is as follows:

[0009] An installer for architectural glass includes a base, a pedestal slidably connected to the top of the base, and a first L-shaped side plate and a second L-shaped side plate disposed on the top of the pedestal. A first L-shaped pipe and a second L-shaped pipe are respectively fixedly installed inside the first L-shaped side plate and the second L-shaped side plate. A connecting pipe is fixedly installed on the side of the first L-shaped side plate near the second L-shaped side plate, and the first L-shaped pipe and the connecting pipe are in communication. The second L-shaped pipe is inserted into the connecting pipe and slidably connected to it. Several pressure regulators are fixedly installed inside the first L-shaped side plate and on one side of the first L-shaped pipe and the second L-shaped pipe, respectively. The valve has connection holes for mates with the pressure regulating valve on both the first L-shaped pipe and the second L-shaped pipe. A cross-shaped slider is provided on one side of both the first L-shaped side plate and the second L-shaped side plate, and the cross-shaped slider passes through the top of the first L-shaped side plate and the second L-shaped side plate and is slidably connected to it. A suction cup is fixedly installed on the side of each cross-shaped slider away from the first L-shaped side plate and the second L-shaped side plate. A through groove is provided on the cross-shaped slider to mate with the suction cup, and the two ends of the through groove are respectively connected to the pressure regulating valve and the suction cup. A placement plate is fixedly installed on one side of the first L-shaped side plate, and the second L-shaped side plate is slidably connected to the placement plate.

[0010] As a preferred technical solution of this application, two guide rods are fixedly installed inside the first L-shaped side plate and the second L-shaped side plate. The guide rods pass through the cross-shaped slider and are slidably connected to it. An L-shaped limiting block is fixedly installed on the side of the second L-shaped side plate away from the first L-shaped side plate. Several auxiliary plates are fixedly installed on the side of the first L-shaped side plate close to the second L-shaped side plate.

[0011] As a preferred technical solution of this application, a U-shaped insert is provided on the side of the first L-shaped side plate and the second L-shaped side plate away from the suction cup. The U-shaped insert is inserted into the interior of the cross-shaped slider and slidably connected with it. Several slots that cooperate with the U-shaped insert are provided on the first L-shaped side plate and the second L-shaped side plate. A fixing bolt is provided on the side of the U-shaped insert away from the cross-shaped slider. The fixing bolt passes through the U-shaped insert and is threadedly connected with it. Several threaded grooves that are threadedly connected with the cross-shaped slider are provided on the first L-shaped side plate and the second L-shaped side plate.

[0012] As a preferred technical solution of this application, a first threaded rod is provided inside the first L-shaped side plate, and the first threaded rod passes through one side of the first L-shaped side plate and is rotatably connected to it. The first threaded rod passes through the second L-shaped side plate and is threadedly connected to it. A first worm wheel and a first worm are rotatably connected inside the first L-shaped side plate, and the first worm wheel and the first worm mesh. The first worm is fixedly connected to the first threaded rod. A first handle is fixedly installed on the top of the first worm wheel, and the first handle passes through the top of the first L-shaped side plate and is rotatably connected to it. A limiting ring is fixedly installed on the outer side of the connecting pipe near the second L-shaped side plate, and the limiting ring is slidably connected to the second L-shaped side plate. The connecting pipe is inserted into the interior of the second L-shaped side plate and is slidably connected to it. A sealing ring is embedded at the junction of the connecting pipe with the first L-shaped pipe and the second L-shaped pipe.

[0013] As a preferred technical solution of this application, the top of the base is provided with two second threaded rods, both of which are inserted into the interior of the first L-shaped side plate and threadedly connected thereto. Both of the second threaded rods are inserted into the interior of the base and rotatably connected thereto. The bottom of each of the two second threaded rods is fixedly installed with a second worm gear. The interior of the base is rotatably connected with a second worm, which meshes with the two second worm gears. Both of the second worm gears are rotatably connected to the base. A second handle is fixedly installed on one side of the second worm, and the second handle passes through one side of the base and is rotatably connected thereto.

[0014] As a preferred technical solution of this application, a controller is embedded in one side of the base. The controller is electrically connected to a negative pressure pump and several pressure regulating valves. Two extension rods are provided on one side of the base. Threaded heads are fixedly installed on the side of the two extension rods near the base. The two threaded heads are inserted into the interior of the base and threadedly connected to it. The two threaded heads penetrate the base and are slidably connected to it. Threaded grooves that mate with the threaded heads are opened on the side of the two extension rods away from the base.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In the scheme of this application:

[0017] (1) By sliding the connecting tube and the L-shaped pipe, combined with the cross-shaped slider to drive the suction cup to slide laterally and the number of suction cups can be increased or decreased, multi-dimensional adjustment can be achieved, which can more flexibly adapt to glass of different sizes and shapes. In addition, by pneumatically connecting the pressure regulating valve with the suction cup, the pressure of each suction cup can be precisely and independently controlled. With the elastic buffer pad, it can ensure that the glass is subjected to uniform force and avoid excessive local stress leading to breakage, and reduce damage to the glass surface during adsorption.

[0018] (2) By rotating the second lever, the first L-shaped side plate is raised and lowered along the threaded rod axis, and the glass height is adjusted synchronously to meet the installation requirements of various building scenarios. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a side sectional view of the present invention.

[0021] Figure 3 This is a partial structural diagram of the present invention;

[0022] Figure 4 This is a schematic diagram of the internal structure of the base of this utility model;

[0023] Figure 5 This is a schematic diagram of the extension rod structure of this utility model.

[0024] Explanation of reference numerals in the accompanying drawings: 1. Base; 2. Base plate; 3. First L-shaped side plate; 4. Second L-shaped side plate; 5. First L-shaped pipe; 6. Second L-shaped pipe; 7. Connecting pipe; 8. Pressure regulating valve; 9. Cross-shaped slider; 10. Suction cup; 11. Guide rod; 12. U-shaped insert; 13. First worm gear; 14. First worm; 15. First threaded rod; 16. Placement plate; 17. L-shaped limit block; 18. Auxiliary plate; 19. Second worm; 20. Second worm gear; 21. Second threaded rod; 22. Extension rod; 23. Threaded head; 24. Controller. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] Example 1: Please refer to the appendix of the instruction manual. Figure 1-3. An installer for architectural glass includes a base 1, a base 2 slidably connected to the top of the base 1, a first L-shaped side plate 3 and a second L-shaped side plate 4 disposed on the top of the base 2, a first L-shaped pipe 5 and a second L-shaped pipe 6 respectively fixedly installed inside the first L-shaped side plate 3 and the second L-shaped side plate 4, a connecting pipe 7 fixedly installed on the side of the first L-shaped side plate 3 near the second L-shaped side plate 4, and the first L-shaped pipe 5 and the connecting pipe 7 are connected, the second L-shaped pipe 6 is inserted into the connecting pipe 7 and slidably connected to it, and several pressure regulators are fixedly installed inside the first L-shaped side plate 3 and the second L-shaped side plate 4 on one side of the first L-shaped pipe 5 and the second L-shaped pipe 6. Valve 8, first L-shaped pipe 5 and second L-shaped pipe 6 are all provided with connection holes that cooperate with pressure regulating valve 8. One side of first L-shaped side plate 3 and second L-shaped side plate 4 is provided with cross-shaped slider 9, and the cross-shaped slider 9 passes through the top of first L-shaped side plate 3 and second L-shaped side plate 4 and is slidably connected with them. Suction cups 10 are fixedly installed on the side of the two cross-shaped sliders 9 away from first L-shaped side plate 3 and second L-shaped side plate 4. The cross-shaped slider 9 is provided with a through groove that cooperates with suction cup 10, and the two ends of the through groove are respectively connected to pressure regulating valve 8 and suction cup 10. A placement plate 16 is fixedly installed on one side of first L-shaped side plate 3, and second L-shaped side plate 4 is slidably connected to placement plate 16.

[0032] In this embodiment of the invention, a first L-shaped pipe 5 and a second L-shaped pipe 6 are respectively fixed inside the first L-shaped side plate 3 and the second L-shaped side plate 4. The two are connected by a connecting pipe 7 and can slide relative to each other.

[0033] A pressure regulating valve 8 is installed on the inner side of the side panel, and several sets of suction cups 10 are located on the outer side. Each set of suction cups 10 is connected to the first L-shaped side panel 3 and the second L-shaped side panel 4 via a cross-shaped slider 9. The cross-shaped slider 9 can slide laterally along the slide rail. The number of suction cups 10 can be increased or decreased according to the glass size, so that the suction cups 10 can better fit glass surfaces of different sizes.

[0034] A high-toughness silicone elastic buffer pad is added to the contact surface between the suction cup 10 and the glass, and the suction cup 10 is pneumatically connected to the pressure regulating valve 8 through a through groove; the placement plate 16 of the first L-shaped side plate 3 and the second L-shaped side plate 4 form a sliding fit.

[0035] In this embodiment of the utility model, the sliding fit between the connecting pipe 7 and the L-shaped pipe, combined with the cross-shaped slider 9 driving the suction cup 10 to slide laterally and the ability to increase or decrease the number of suction cups, enables multi-dimensional adjustment and can more flexibly adapt to glass of different sizes and shapes.

[0036] The pressure regulating valve 8 is pneumatically connected to the suction cup 10, which can accurately and independently control the pressure of each suction cup. With the help of the elastic buffer pad, it can ensure that the glass is subjected to uniform force, avoid excessive local stress that may cause it to break, and reduce damage to the glass surface during adsorption.

[0037] The placement plate 16 enhances the stability of the second L-shaped side plate 4, improves the overall load-bearing capacity of the device, and ensures the safety and reliability of the installation process.

[0038] Example 2: Please refer to the appendix of the instruction manual. Figure 1 -5. As a preferred embodiment of the present invention, two guide rods 11 are fixedly installed inside the first L-shaped side plate 3 and the second L-shaped side plate 4. The guide rods 11 pass through the cross-shaped slider 9 and are slidably connected to it. An L-shaped limiting block 17 is fixedly installed on the side of the second L-shaped side plate 4 away from the first L-shaped side plate 3. Several auxiliary plates 18 are fixedly installed on the side of the first L-shaped side plate 3 close to the second L-shaped side plate 4.

[0039] Both the first L-shaped side plate 3 and the second L-shaped side plate 4 have U-shaped inserts 12 on the side away from the suction cup 10. The U-shaped inserts 12 are inserted into the interior of the cross-shaped slider 9 and slidably connected to it. The first L-shaped side plate 3 and the second L-shaped side plate 4 have several slots that mate with the U-shaped inserts 12. The side of the U-shaped inserts 12 away from the cross-shaped slider 9 has a fixing bolt, which passes through the U-shaped inserts 12 and is threadedly connected to it. Both the first L-shaped side plate 3 and the second L-shaped side plate 4 have several threaded grooves that are threadedly connected to the cross-shaped slider 9.

[0040] The first L-shaped side plate 3 has a first threaded rod 15 inside, which passes through one side of the first L-shaped side plate 3 and is rotatably connected to it. The first threaded rod 15 passes through the second L-shaped side plate 4 and is threadedly connected to it. The first L-shaped side plate 3 has a first worm gear 13 and a first worm 14 rotatably connected inside, and the first worm gear 13 and the first worm 14 mesh. The first worm 14 is fixedly connected to the first threaded rod 15. A first handle is fixedly installed on the top of the first worm gear 13, which passes through the top of the first L-shaped side plate 3 and is rotatably connected to it. A limit ring is fixedly installed on the outside of the connecting pipe 7 near the second L-shaped side plate 4, and the limit ring is slidably connected to the second L-shaped side plate 4. The connecting pipe 7 is inserted into the interior of the second L-shaped side plate 4 and is slidably connected to it. A sealing ring is embedded at the junction of the connecting pipe 7 with the first L-shaped pipe 5 and the second L-shaped pipe 6.

[0041] The top of the base 2 is provided with two second threaded rods 21. Both second threaded rods 21 are inserted into the interior of the first L-shaped side plate 3 and threadedly connected to it. Both second threaded rods 21 are inserted into the interior of the base 2 and rotatably connected to it. The bottom of each of the two second threaded rods 21 is fixedly installed with a second worm gear 20. The interior of the base 2 is rotatably connected with a second worm 19, and the second worm 19 meshes with the two second worm gears 20. Both second worm gears 20 are rotatably connected to the base 2. A second handle is fixedly installed on one side of the second worm 19, and the second handle passes through one side of the base 2 and is rotatably connected to it.

[0042] A controller 24 is embedded on one side of the base 1. The controller 24 is electrically connected to the negative pressure pump and several pressure regulating valves 8. Two extension rods 22 are provided on one side of the base 1. Threaded heads 23 are fixedly installed on the side of the two extension rods 22 near the base 2. The two threaded heads 23 are inserted into the interior of the base 1 and threadedly connected to it. The two threaded heads 23 penetrate the base 2 and are slidably connected to it. Threaded grooves that mate with the threaded heads 23 are opened on the side of the two extension rods 22 away from the base 1.

[0043] In this embodiment of the utility model, the cross-shaped slider 9 slides along the guide rod 11 to limit the movement trajectory of the suction cup 10; the L-shaped limiting block 17 prevents the second L-shaped side plate 4 from sliding excessively and detaching from the connecting tube 7; and the auxiliary plate 18 enhances the structural strength of the side plate connection.

[0044] After adjusting the position of the cross-shaped slider 9, insert the U-shaped insert 12 and tighten the fixing bolts to rigidly fix the slider to the side plate.

[0045] Rotating the first handwheel drives the first worm gear 13 to rotate, which in turn drives the first threaded rod 15 to rotate via the first worm 14, causing the second L-shaped side plate 4 to move axially along the threaded rod, thus achieving precise adjustment of the distance between the two side plates; the sealing ring prevents air leakage from the pipeline, and the limiting ring restricts the sliding range of the side plate.

[0046] In this embodiment of the utility model, rotating the second rotary knob drives the second worm gear 19 to rotate, which in turn drives the second threaded rod 21 to rotate via the second worm wheel 20, causing the first L-shaped side plate 3 to rise and fall along the threaded rod axis, thus adjusting the glass height synchronously.

[0047] The controller 24 centrally regulates the output of the negative pressure pump and the opening of each pressure regulating valve 8 to achieve automated control of the adsorption force; the extension rod 22 can extend the operating radius of the device, and multiple extension rods can be connected by threaded grooves to extend the length.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. An installer for architectural glass, comprising a base (1), characterized in that, The base (1) is slidably connected to the top of the base (2). The top of the base (2) is provided with a first L-shaped side plate (3) and a second L-shaped side plate (4). A first L-shaped pipe (5) and a second L-shaped pipe (6) are fixedly installed inside the first L-shaped side plate (3) and the second L-shaped side plate (4), respectively. A connecting pipe (7) is fixedly installed on the side of the first L-shaped side plate (3) near the second L-shaped side plate (4), and the first L-shaped pipe (5) and the connecting pipe (7) are connected. The second L-shaped pipe (6) is inserted into the connecting pipe (7) and slidably connected to it. Several pressure regulating valves (8) are fixedly installed inside the first L-shaped side plate (3) and the second L-shaped side plate (4) on the side of the first L-shaped pipe (5) and the second L-shaped pipe (6). Both the first L-shaped side plate (5) and the second L-shaped pipe (6) are provided with connection holes that cooperate with the pressure regulating valve (8). A cross-shaped slider (9) is provided on one side of the first L-shaped side plate (3) and the second L-shaped side plate (4). The cross-shaped slider (9) passes through the top of the first L-shaped side plate (3) and the second L-shaped side plate (4) and is slidably connected to them. A suction cup (10) is fixedly installed on the side of the two cross-shaped sliders (9) away from the first L-shaped side plate (3) and the second L-shaped side plate (4). A through groove that cooperates with the suction cup (10) is provided on the cross-shaped slider (9). The two ends of the through groove are respectively connected to the pressure regulating valve (8) and the suction cup (10). A placement plate (16) is fixedly installed on one side of the first L-shaped side plate (3). The second L-shaped side plate (4) is slidably connected to the placement plate (16).

2. The installer for architectural glass according to claim 1, characterized in that, Two guide rods (11) are fixedly installed inside the first L-shaped side plate (3) and the second L-shaped side plate (4). The guide rods (11) pass through the cross-shaped slider (9) and are slidably connected to it. An L-shaped limiting block (17) is fixedly installed on the side of the second L-shaped side plate (4) away from the first L-shaped side plate (3). Several auxiliary plates (18) are fixedly installed on the side of the first L-shaped side plate (3) close to the second L-shaped side plate (4).

3. The installer for architectural glass according to claim 1, characterized in that, Both the first L-shaped side plate (3) and the second L-shaped side plate (4) are provided with U-shaped inserts (12) on the side away from the suction cup (10). The U-shaped inserts (12) are inserted into the interior of the cross-shaped slider (9) and slidably connected to it. The first L-shaped side plate (3) and the second L-shaped side plate (4) are provided with a number of slots that cooperate with the U-shaped inserts (12). The side of the U-shaped inserts (12) away from the cross-shaped slider (9) is provided with a fixing bolt, and the fixing bolt passes through the U-shaped inserts (12) and is threadedly connected to it. Both the first L-shaped side plate (3) and the second L-shaped side plate (4) are provided with a number of threaded grooves that are threadedly connected to the cross-shaped slider (9).

4. The installer for architectural glass according to claim 1, characterized in that, The first L-shaped side plate (3) is provided with a first threaded rod (15) inside, and the first threaded rod (15) passes through one side of the first L-shaped side plate (3) and is rotatably connected to it. The first threaded rod (15) passes through the second L-shaped side plate (4) and is threadedly connected to it. The first L-shaped side plate (3) is rotatably connected with a first worm gear (13) and a first worm (14), and the first worm gear (13) and the first worm (14) mesh. The first worm (14) is fixedly connected to the first threaded rod (15). The first worm gear (13) is fixedly mounted with a first rotating handle, which passes through the top of the first L-shaped side plate (3) and is rotatably connected to it. The connecting pipe (7) is fixedly mounted with a limiting ring near the outside of the second L-shaped side plate (4), and the limiting ring is slidably connected to the second L-shaped side plate (4). The connecting pipe (7) is inserted into the interior of the second L-shaped side plate (4) and is slidably connected to it. A sealing ring is embedded at the junction of the connecting pipe (7) with the first L-shaped pipe (5) and the second L-shaped pipe (6).

5. The installer for architectural glass according to claim 1, characterized in that, The base (2) has two second threaded rods (21) on its top. Both second threaded rods (21) are inserted into the interior of the first L-shaped side plate (3) and threadedly connected to it. Both second threaded rods (21) are inserted into the interior of the base (2) and rotatably connected to it. Both second threaded rods (21) have a second worm wheel (20) fixedly installed at their bottom. The interior of the base (2) is rotatably connected to a second worm (19), and the second worm (19) meshes with the two second worm wheels (20). Both second worm wheels (20) are rotatably connected to the base (2). A second handle is fixedly installed on one side of the second worm (19), and the second handle passes through one side of the base (2) and rotatably connected to it.

6. The installer for architectural glass according to claim 1, characterized in that, A controller (24) is embedded on one side of the base (1). The controller (24) is electrically connected to a negative pressure pump and several pressure regulating valves (8). Two extension rods (22) are provided on one side of the base (1). Threaded heads (23) are fixedly installed on the side of the two extension rods (22) near the base (2). The two threaded heads (23) are inserted into the interior of the base (1) and threadedly connected to it. The two threaded heads (23) penetrate the base (2) and are slidably connected to it. Threaded grooves that mate with the threaded heads (23) are opened on the side of the two extension rods (22) away from the base (1).

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