Fixing device suitable for light partition boards of multiple specifications

Abstract

The utility model provides a fixing device suitable for light partition boards of multiple specifications, and aims to solve the technical problem that an existing fixing device for the light partition boards is small in application range. The device comprises a supporting table; the fixed plate is fixed on one side of the upper surface of the supporting table; the movable plate is movably arranged on the other side of the upper surface of the supporting table; the pushing mechanism comprises a first screw rod and a moving block which are mounted in the first mounting groove of the supporting table, and one end of the screw rod is in transmission connection with a rotating piece; the fixed plate and the movable plate are symmetrically arranged, lower clamping pieces are arranged below the opposite faces of the fixed plate and the movable plate, and the upper surfaces of the two lower clamping pieces are flush. Upper clamping pieces are movably arranged above the two lower clamping pieces respectively; a boss is arranged in the middle of the bottom end of the movable plate, and the lower bottom face of the boss is fixedly connected with the upper surface of the movable block. The light partition board fixing device can fix light partition boards of different sizes, is wide in application range and can effectively reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of lightweight partition wall panel production and processing technology, and in particular to a fixing device for lightweight partition wall panels of various specifications. Background Technology

[0002] Lightweight wall panels are a type of building material, primarily used for non-load-bearing interior partitions in industrial, residential, and public buildings. During installation, lightweight wall panels require processing, including cutting, drilling, grinding, trimming, and carving. Therefore, fixing devices are needed to secure the panels. In practical applications, different sizes of lightweight partition panels are required due to construction needs, but existing fixing devices cannot accommodate all sizes, limiting their applicability and increasing construction costs. Summary of the Invention

[0003] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a lightweight partition wall fixing device applicable to multiple specifications, which solves the technical problem of the limited applicability of existing lightweight partition wall fixing devices.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A fixing device for lightweight partition boards applicable to multiple specifications includes: a support platform with a first mounting groove; a fixing plate fixed to one side of the upper surface of the support platform; a movable plate movably disposed on the other side of the upper surface of the support platform; a pushing mechanism including a first screw, a movable block, and a rotating component, wherein the first screw is rotatably installed in the first mounting groove, the movable block is movably disposed on the first screw, and the rotating component is drively connected to one end of the first screw; the fixing plate and the movable plate are symmetrically arranged, and each of their opposite sides is provided with a lower clamping component, the upper surfaces of the two lower clamping components being flush; an upper clamping component is movably disposed above each of the two lower clamping components; wherein, the movable plate has a boss at the middle position of its bottom end, and the lower bottom surface of the boss is fixedly connected to the upper surface of the movable block.

[0006] This invention uses a rotating component to rotate the first screw, which in turn moves the moving block and the moving plate closer to or away from the fixed plate, thus allowing for the fixing of lightweight partition panels of different widths. After both sides of the partition panel are fixed, the height between the upper and lower clamping components is adjusted to fully secure partition panels of different thicknesses. Therefore, this invention can fix lightweight partition panels of various sizes, has a wide range of applications, and effectively reduces costs.

[0007] Optionally, one end of the first screw is rotatably mounted on the side wall of the first mounting groove, and the other end passes through the other side wall and is connected to the rotating component for transmission. When the rotating component is rotated, the moving block drives the moving plate to reciprocate along the first screw.

[0008] Optionally, the fixing device further includes: a second mounting groove symmetrically formed on the support platform along the first screw; a slide rail installed in the second mounting groove; wherein a sliding block is slidably mounted on the slide rail, the lower bottom surfaces on both sides of the movable plate are fixed to the upper surface of the sliding block, and the upper surface of the sliding block is flush with the upper surface of the support platform.

[0009] Optionally, the lower clamping member includes a lower base plate and a lower pressure plate movably connected above the lower base plate; the upper clamping member includes a top plate that can move up and down and an upper pressure plate movably connected below the top plate; wherein the lower pressure plate and the upper pressure plate are arranged opposite to each other, and rubber pads are respectively provided on the opposite side.

[0010] Optionally, the lower base plate is provided with a plurality of first grooves at equal intervals, and a first connecting post is fixedly connected to the first groove by a first spring. The upper surface of the first connecting post is fixedly connected to the lower pressure plate. The top plate is provided with a plurality of second grooves at equal intervals, and a second connecting post is fixedly connected to the second groove by a second spring. The upper surface of the second connecting post is fixedly connected to the upper pressure plate.

[0011] Optionally, the bottom plate, top plate, lower pressure plate, and upper pressure plate have equal length and width dimensions.

[0012] Optionally, the two top plates are respectively connected to a lifting mechanism, which drives the upper clamping member to rise or fall.

[0013] Optionally, the lifting mechanism includes: a third mounting groove, vertically formed on the fixed plate or movable plate, with a sliding groove on one side wall; a second screw, vertically installed in the third mounting groove; and a slider, movably mounted on the second screw; wherein, one end of the slider is fixedly connected to a connecting rod, the connecting rod is slidably connected to the sliding groove, the other end of the connecting rod passes through the sliding groove and is fixedly connected to the side wall of the top plate, and the connecting rod is parallel to the support platform.

[0014] Optionally, the lower end of the second screw is fixed in the third mounting groove by a bearing, and the upper end passes through the fixed plate or the movable plate and is connected to the drive source. The drive source drives the second screw to rotate so that the connecting rod drives the top plate to rise or fall.

[0015] Optionally, the drive source is a dual-axis motor, with rotating shafts fixedly connected to its output ends. A driving bevel gear is installed at the end of the rotating shaft, and a driven bevel gear is installed at the upper end of the second screw. The driving bevel gear meshes with the driven bevel gear.

[0016] The beneficial effects of this utility model are:

[0017] This invention uses a rotating component to rotate the first screw, which in turn moves the moving block and the moving plate closer to or away from the fixed plate, thus allowing for the fixing of lightweight partition boards of different widths. After both sides of the partition board are fixed, a connecting rod moves the upper pressure plate up or down to adjust the height between the lower and upper pressure plates, thereby ensuring proper fixing of partition boards of different thicknesses. Therefore, this invention can fix lightweight partition boards of various sizes, has a wide range of applications, and effectively reduces costs. Furthermore, during the processing and fixing of the lightweight partition board, this invention utilizes the lower pressure plate, the first spring, the upper pressure plate, and the second spring to buffer the sides of the partition board, counteracting vibrations generated during processing and ensuring the partition board remains stable, thus effectively improving processing quality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a side view of the structure of this utility model.

[0021] Figure 3 This is a schematic diagram of the support platform in this utility model.

[0022] Figure 4 This is a schematic diagram of the structure of the movable plate in this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the lower clamping component in this utility model.

[0024] Reference numerals: 1. Support platform; 10. First mounting slot; 2. Fixed plate; 3. Moving plate; 30. Boss; 4. Pushing mechanism; 40. First screw; 41. Moving block; 42. Rotating component; 43. Second mounting slot; 44. Slide rail; 45. Sliding block; 5. Lower clamping component; 50. Base plate; 51. Lower pressure plate; 501. First groove; 502. First spring; 503. First connecting column; 6. Upper clamping component; 60. Top plate; 61. Upper pressure plate; 7. Rubber pad; 8. Lifting mechanism; 80. Third mounting slot; 81. Second screw; 82. Slider; 83. Connecting rod; 84. Dual-axis motor; 840. Mounting base; 85. Rotating shaft; 86. Driving bevel gear; 87. Driven bevel gear; 88. Slide groove; 89. Bearing. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of this utility model application. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0026] In the description of the embodiments of this utility model application, it should be understood that the terms "center", "longitudinal", "lateral", "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 based on the orientation or positional relationship shown in the drawings, are only for the convenience of describing the embodiments of this utility model application 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 on the embodiments of this utility model application.

[0027] 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 the embodiments of this utility model application, "multiple" means two or more, unless otherwise explicitly specified.

[0028] In the embodiments of this utility model application, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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, an electrical connection, or a communication 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 the embodiments of this utility model application according to the specific circumstances.

[0029] In the embodiments of this utility model application, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] The following disclosure provides many different implementations or examples for carrying out different structures of the embodiments of this utility model application. To simplify the disclosure of the embodiments of this utility model application, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of this utility model application. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of this utility model application; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0031] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0032] In the practical application of lightweight partition boards, different sizes of partition boards are required due to construction requirements. However, the existing fixing devices cannot fix lightweight partition boards of different sizes, which limits the applicability of the fixing devices and increases construction costs.

[0033] like Figures 1-5 As shown in the figure, the present utility model application provides a lightweight partition wall fixing device applicable to multiple specifications, characterized in that it includes: a support platform 1, a fixing plate 2, a moving plate 3, and a pushing mechanism 4, etc.

[0034] The fixed plate 2 is fixed to one side of the upper surface of the support platform 1, and the movable plate 3 is movably disposed on the other side of the upper surface of the support platform 1. The movable plate 3 can move relative to the fixed plate 2. The pushing mechanism 4 pushes the movable plate 3 to move back and forth towards the fixed plate 2. For ease of explanation, in this embodiment, the side of the fixed plate 2 facing the movable plate 3 is considered the front, the other side is considered the rear, and the two sides are considered the left and right sides, respectively. The support platform 1 has a first mounting groove 10, which is located at the center of the front of the fixed plate 2.

[0035] The pushing mechanism 4 includes a first screw 40, a moving block 41, and a rotating component 42.

[0036] The first screw 40 is installed in the first mounting groove 10. One end of the first screw 40 is rotatably mounted on the side wall of the first mounting groove 10, and the other end passes through the other side wall and is rotatably connected to the rotating member 42 on the outside of the support platform 1. The moving block 41 is rotatably mounted on the first screw 40. The moving plate 3 has a boss 30 at the middle of its bottom end, and the lower surface of the boss 30 is fixedly connected to the upper surface of the moving block 41. When the rotating member 42 is rotated, the rotating member 42 drives the first screw 40 to rotate. The rotation of the first screw 40 can push the moving plate 3 as a whole to move forward of the fixed plate 2, thereby clamping the partition plate placed between the fixed plate 2 and the moving plate 3. By setting the moving plate 3, this utility model can fix partition plates of different widths. In use, adjust the distance between the moving plate 3 and the fixed plate 2 according to the size of the lightweight partition board. After roughly adjusting, place both sides of the partition board on the lower clamping member 5, and then adjust again by rotating member 42 to clamp both sides of the partition board with the moving plate 3 and the fixed plate 2. Finally, adjust the distance between the upper clamping member 6 and the lower clamping member 5 so that the upper clamping member 6 can press and fix lightweight partition boards of different thicknesses. The rotating member 42 can be manually rotated by a handwheel or by a drive motor, as long as it can drive the first screw 40 to rotate.

[0037] To increase the stability of the movable plate 3 during movement, a second mounting groove 43 is symmetrically provided on the support platform 1 along the first screw 40, and a slide rail 44 is installed in the second mounting groove 43. A sliding block 45 is slidably mounted on the slide rail 44, and the lower bottom surfaces of both sides of the movable plate 3 are fixed to the upper surface of the sliding block 45. The upper surface of the sliding block 45 is flush with the upper surface of the support platform 1.

[0038] The fixed plate 2 and the movable plate 3 are identical in size, meaning their length, width, and height are all equal. Each of the opposite sides of the fixed plate 2 and the movable plate 3 has a lower clamping member 5, with their upper surfaces flush. Upper clamping members 6 are movably mounted above each of the lower clamping members 5. In use, the distance between the movable plate 3 and the fixed plate 2 is adjusted according to the size of the lightweight partition wall panel. The partition wall panel is then placed on the upper surfaces of the two lower clamping members 5, and the distance between the upper clamping members 6 and the lower clamping members 5 is adjusted again to clamp and fix partition wall panels of different sizes. A rubber layer can also be laid on the opposite side of the fixed plate 2 and the movable plate 3. This rubber layer does not affect the vertical movement of the upper clamping members 6 and protects both sides of the partition wall panel when fixing it.

[0039] The lower clamping member 5 includes a lower base plate 50 and a lower pressure plate 51 movably connected above the lower base plate 50. One side of the lower base plate 50 is fixed to one side of the fixed plate 2 or the movable plate 3. Since the two lower clamping members 5 have the same structure, the lower base plate of one lower clamping member is fixed to the front wall of the fixed plate 2, and the lower base plate of the other lower clamping member is fixed to the rear wall of the movable plate 3. The upper surfaces of the two lower pressure plates 51 are on the same horizontal plane. The upper clamping member 6 includes a top plate 60 and an upper pressure plate 61 movably connected below the top plate 60. The lower pressure plate 51 and the upper pressure plate 61 are arranged opposite to each other, and rubber pads 7 are respectively provided on the opposite side of the lower pressure plate 51 and the upper pressure plate 61, i.e., four rubber pads 7. The lower base plate 50, the top plate 60, the lower pressure plate 51, and the upper pressure plate 61 are all equal in length and width. In use, the partition wall panel is placed on the two lower pressure plates 51, with the bottom surfaces of both sides of the partition wall panel touching the upper surfaces of the lower pressure plates 51. Then, the upper pressure plate 61 is adjusted to rise or fall, so that the bottom surface of the upper pressure plate 61 touches the upper surfaces of both sides of the partition wall panel, thereby pressing and fixing the partition wall panel. The rubber gasket 7 can stably and firmly fix the partition wall panel without damaging its surface.

[0040] To prevent the partition wall panels from being affected by vibration during processing and to increase the stability of the fixing, refer to... Figure 5As shown, a plurality of first grooves 501 are equally spaced on the lower base plate 50. A first connecting post 503 is fixedly connected to each first groove 501 by a first spring 502. Specifically, the lower end of the first spring 502 is fixedly connected to the bottom surface of the first groove 501, and the upper end is connected to the bottom of the first connecting post 503. The upper surface of the first connecting post 503 is fixedly connected to the lower bottom surface of the lower pressure plate 51. A plurality of second grooves are equally spaced on the top plate 60. A second connecting post is fixedly connected to each second groove by a second spring. The upper surface of the second connecting post is fixedly connected to the upper pressure plate. When the partition wall is clamped, the lower pressure plate 51, the first spring 502, the upper pressure plate 61, and the second spring buffer both sides of the partition wall, offsetting vibrations generated during processing and maintaining the stability of the partition wall. When vibration occurs, the springs contract, providing shock absorption during the contraction process. It should be noted that the structures of the second groove, the second spring, and the second connecting post on the top plate 60 are identical to those of the first groove 501, the first spring 502, and the first connecting post 503; therefore, their accompanying drawings can be used for reference. Figure 5 .

[0041] In one embodiment, the two upper clamping members 6 are respectively connected to lifting mechanisms 8, and the two lifting mechanisms 8 drive the corresponding upper clamping members 6 to rise or fall.

[0042] The lifting mechanism 8 includes a third mounting groove 80, a second screw 81, a slider 82, a connecting rod 83, etc.

[0043] A third mounting slot 80 is vertically formed on the fixed plate 2 or the movable plate 3. A second screw 81 is vertically installed in the third mounting slot 80. A slider 82 is movably installed on the second screw 81. One end of the connecting rod 83 is fixedly connected to the slider 82, and the other end is fixedly connected to one side wall of the top plate 60. The connecting rod 83 is parallel to the upper surface of the support platform 1. A sliding groove 88 is formed on the side wall of the third mounting slot 80 near the top plate 60, communicating with the third mounting slot 80. The connecting rod 83 is slidably connected to the sliding groove 88, and passes through the sliding groove 88 to be fixedly connected to the side wall of the top plate 60. The rotation of the second screw 81 drives the slider 82 to move, thereby causing the connecting rod 83 to drive the top plate 60 to move vertically up and down. The lower end of the second screw 81 is fixed in the third mounting groove 80 by a bearing 89, and the upper end is connected to a drive source through the fixed plate 2 or the movable plate 3. The drive source drives the second screw 81 to rotate, thereby enabling the connecting rod 83 to drive the top plate 60 to rise or fall.

[0044] In one embodiment, the drive source can be manual. By rotating the handwheel clockwise, the handwheel drives the second screw 81 to rotate, which in turn causes the connecting rod 83 to slide within the slide groove 88 as the slider 82 moves, thereby causing the upper pressure plate 61 to move vertically downward. Conversely, rotating the handwheel counterclockwise causes the upper pressure plate 61 to move vertically upward.

[0045] In another embodiment, the drive source is a dual-axis motor 84. Two sets of second screws 81 are respectively provided on the fixed plate 2 and the movable plate 3. The two sets of second screws 81 are fixed on the left and right sides of the fixed plate 2 or the movable plate 3, and the two sets of second screws 81 are used in conjunction with a dual-axis motor 84.

[0046] The dual-axis motor 84 is connected to the second screw 81 via a transmission connection. Starting the dual-axis motor 84 drives the second screw 81 to rotate, thereby causing the connecting rod 83 to move the top plate 60 vertically back and forth along the slide groove 88. The dual-axis motor 84 is mounted on the top center of the fixed plate 2 or the movable plate 3 via a mounting base 840. A rotating shaft 85 is fixed to the power output end of the motor 84. A driving bevel gear 86 is mounted at the end of the rotating shaft 85, and a driven bevel gear 87 is mounted on the upper end of the second screw 81. The driving bevel gear 86 meshes with the driven bevel gear 87. Starting the dual-axis motor 84 drives the rotating shaft 85 to rotate, thereby rotating the driving bevel gear 86, which in turn drives the driven bevel gear 87, thus rotating the second screw 81. The rotation of the second screw 81 causes the connecting rod 83 to move the top plate 60 up or down.

[0047] Working principle: First, adjust the distance between the fixed plate 2 and the movable plate 3 approximately according to the size of the lightweight partition board. This is done by rotating the first screw 40 via the rotating component 42, causing the movable block 41 to move the movable plate 3 closer to or away from the fixed plate 2. Second, place both sides of the lightweight partition board on the upper surface of the lower pressure plate 51. Then, make a secondary adjustment using the rotating component 42, ensuring that the front wall of the fixed plate 2 and the rear wall of the movable plate 3 are in contact with the sides of the lightweight partition board, thus fixing lightweight partition boards of different widths. Finally, manually or via the dual-axis motor 84, rotate the second screw 81, causing the connecting rod 83 to slide within the groove 88 under the movement of the slider 82. This causes the upper pressure plate 61 to move closer to the lower pressure plate 51, and the rubber gasket 7 to adhere to both sides of the lightweight partition board, thus stably fixing the lightweight partition board. Details not described in this embodiment are techniques known in the art.

Claims

1. A fixing device for lightweight partition boards of various specifications, characterized in that, include: The support platform (1) has a first mounting slot (10); A fixing plate (2) is fixed to one side of the upper surface of the support platform (1); The movable plate (3) is movably disposed on the other side of the upper surface of the support platform (1); The pushing mechanism (4) includes a first screw (40), a moving block (41) and a rotating component (42). The first screw (40) is rotatably installed in the first mounting groove (10). The moving block (41) is movably disposed on the first screw (40). The rotating component (42) is connected to one end of the first screw (40) in a transmission connection. The fixed plate (2) and the movable plate (3) are symmetrically arranged, and each of their opposite sides is provided with a lower clamping member (5), with the upper surfaces of the two lower clamping members (5) flush. An upper clamping member (6) is movably disposed above each of the two lower clamping members (5); The movable plate (3) has a boss (30) at the middle of its bottom end, and the bottom surface of the boss (30) is fixedly connected to the upper surface of the movable block (41).

2. The fixing device according to claim 1, characterized in that, One end of the first screw (40) is rotatably mounted on the side wall of the first mounting groove (10), and the other end passes through the other side wall and is connected to the rotating part (42) for transmission. When the rotating part (42) is rotated, the moving block (41) drives the moving plate (3) to move back and forth along the first screw (40).

3. The fixing device according to claim 1, characterized in that, The fixing device also includes: The second mounting slot (43) is symmetrically opened on the support platform (1) along the first screw (40); The slide rail (44) is installed in the second mounting groove (43); Among them, a sliding block (45) is slidably installed on the slide rail (44), and the bottom surfaces of both sides of the moving plate (3) are fixed to the upper surface of the sliding block (45). The upper surface of the sliding block (45) is flush with the upper surface of the support platform (1).

4. The fixing device according to claim 1, 2 or 3, characterized in that, The lower clamping member (5) includes a lower base plate (50) and a lower pressure plate (51) movably connected above the lower base plate (50). The upper clamping member (6) includes a top plate (60) that can move up and down and an upper pressure plate (61) that is movably connected to the bottom of the top plate (60). The lower pressure plate (51) and the upper pressure plate (61) are arranged opposite to each other, and rubber pads (7) are respectively provided on the opposite side.

5. The fixing device according to claim 4, characterized in that, The lower base plate (50) is provided with a plurality of first grooves (501) spaced at equal intervals. A first connecting post (503) is fixedly connected in the first groove (501) by a first spring (502). The upper surface of the first connecting post (503) is fixedly connected to the lower pressure plate (51). The top plate (60) is provided with a plurality of second grooves at equal intervals. A second connecting post is fixedly connected to the second groove by a second spring. The upper surface of the second connecting post is fixedly connected to the upper pressure plate (61).

6. The fixing device according to claim 5, characterized in that, The bottom plate (50), top plate (60), lower pressure plate (51) and upper pressure plate (61) have the same length and width.

7. The fixing device according to claim 6, characterized in that, The two top plates (60) are respectively connected to a lifting mechanism (8), which drives the upper clamping member (6) to rise or fall.

8. The fixing device according to claim 7, characterized in that, The lifting mechanism (8) includes: The third mounting groove (80) is vertically opened on the fixed plate (2) or the movable plate (3), and a sliding groove (88) is opened on one side wall. The second screw (81) is vertically installed in the third mounting slot (80); The slider (82) is movably mounted on the second screw (81); One end of the slider (82) is fixedly connected to a connecting rod (83), the connecting rod (83) is slidably connected to the slide groove (88), the other end of the connecting rod (83) passes through the slide groove (88) and is fixedly connected to the side wall of the top plate (60), and the connecting rod (83) is parallel to the support platform (1).

9. The fixing device according to claim 8, characterized in that, The lower end of the second screw (81) is fixed in the third mounting groove (80) by a bearing (89), and the upper end passes through the fixed plate (2) or the movable plate (3) and is connected to the drive source. The drive source drives the second screw (81) to rotate so that the connecting rod (83) drives the top plate (60) to rise or fall.

10. The fixing device according to claim 9, characterized in that, The driving source is a dual-axis motor (84), and its output end is fixedly connected to a rotating shaft (85). The end of the rotating shaft (85) is equipped with a driving bevel gear (86), and the upper end of the second screw (81) is equipped with a driven bevel gear (87). The driving bevel gear (86) meshes with the driven bevel gear (87).

Images