A type of support device for warehouse management with anti-tilting structure

Abstract

A support device for warehouse management with an anti-tilting structure is disclosed. This invention relates to the field of warehouse fixed support technology. The lower connector is set on the ground rail, the upper connector is set on the lower connector, and the adjusting component is set on the upper connector and the adjusting component is set on the building ceiling. It has two sets of synchronously movable connecting structures, which are connected by a sleeve structure. The upper structure is provided with a guide structure perpendicular to its direction of travel and a driving component, so as to facilitate the rotation adjustment of the sleeve structure while it is moving, thereby facilitating the adjustment of the tilt angle, facilitating the support of materials, and adapting to the material stacking environment with tilted side walls.

Description

Technical Field

[0001] This invention relates to the field of warehouse fixed support technology, and more specifically to an array-type warehouse management support device with an anti-tilting structure. Background Technology

[0002] When stacking materials in large warehouses, the stacks often tilt and tip over when they are too high. The conventional solution to this problem is to widen the base area of ​​the stack to increase its stability. However, this makes the stack too large, making it difficult for the core material to reach the stack, and the material on the side walls is also prone to tipping over. To address this issue, appropriate support equipment needs to be installed to adapt to different operating environments and reinforce the side walls of the stacked materials. Summary of the Invention

[0003] The purpose of this invention is to address the deficiencies and shortcomings of existing technologies by providing a support device for warehouse management with an anti-tilting structure. This device has two sets of synchronously movable connecting structures, which are connected by a sleeve-type structure. The upper structure has a guide structure perpendicular to its direction of travel and a driving component, which facilitates the rotation adjustment of the sleeve-type structure while it is moving, thereby facilitating the adjustment of the tilt angle, supporting the materials, and adapting to the material stacking environment with tilted side walls.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions:

[0005] It includes a substrate, a mounting groove, and a ground rail. The mounting groove is fixedly disposed on the side wall of the substrate, and the upper side edge of the mounting groove is lower than the upper surface of the substrate. The ground rail is fixedly disposed on the lower inner side wall of the mounting groove. It also includes:

[0006] The lower connector is mounted on the ground rail.

[0007] An upper connector, wherein the upper connector is disposed on the lower connector;

[0008] An adjusting component is provided on the upper connecting component and is also provided on the building ceiling;

[0009] The lower connector and the upper connector form a whole and are mounted between the ground rail and the adjusting component. Materials are arranged and stacked on the base plate and supported by the lower connector and the upper connector. When the support tilt angle of the lower connector and the upper connector is adjusted, the adjusting component drives the upper connector to rotate, which in turn drives the lower connector to rotate.

[0010] Preferably, the lower connector comprises:

[0011] The lower fixed seat is slidably mounted on the ground rail.

[0012] The lower shaft seat is fixedly mounted on the upper surface of the lower fixed seat;

[0013] The lower support shaft is screwed onto the lower shaft seat via a bearing.

[0014] A support sleeve is fixedly mounted on the lower support shaft, and the upper end of the support sleeve is open.

[0015] When using the lower connector, the support sleeve rotates back and forth via the lower support shaft, thereby supporting the stacked materials. When the vertical surface of the materials is tilted, the support sleeve is pressed against the vertical surface of the materials by rotating back and forth. When adjusting the left and right position of the support sleeve, the lower fixed seat is slid left and right on the ground rail to adjust its position, thereby moving the support sleeve left and right.

[0016] Preferably, a slot is fixedly provided on the upper side of the mounting groove away from the substrate, a cover plate is movably inserted into the slot, a support is fixedly provided on the inner wall of the mounting groove on one side of the substrate, the end of the cover plate away from the slot is movably mounted on the support, and guide plates are symmetrically fixed on the left and right side walls of the lower fixed seat, and the guide plates are movably abutted against the support on one side of the support.

[0017] When the lower fixed seat moves left and right, the lower fixed seat drives the guide plate to move. When the guide plate contacts the cover plate, it pushes the cover plate away from the support and pushes it into the slot. After the lower fixed seat has moved, the cover plate inserted into the slot is pulled out and the rear end of the cover plate is placed on the support, so that the cover plate covers the upper end of the mounting slot.

[0018] Preferably, the upper connector comprises:

[0019] A support rod, wherein the support rod is movably inserted into the support sleeve through the upper port of the support sleeve;

[0020] An upper support shaft is fixedly mounted on the upper end of the support rod;

[0021] Upper fixing seat, wherein the upper fixing seat is disposed above the support rod;

[0022] The upper shaft seat is fixedly mounted on the lower surface of the upper fixed seat, and the upper support shaft is spun onto the upper shaft seat via a bearing;

[0023] The support rod is inserted into the support sleeve and moves up and down, thereby supporting the materials stacked on the substrate through the support sleeve and the support rod.

[0024] Preferably, the support rod comprises:

[0025] Mounting base, wherein the mounting base is fixedly mounted on the upper support shaft;

[0026] The square tube is fixedly mounted on the lower surface of the mounting base, and the lower end of the square tube is movably inserted into the support sleeve.

[0027] The triangular tubes are a plurality of each other and are symmetrically fixed in pairs on the side wall of the square tube, with the upper ends of the triangular tubes fixed on the lower surface of the mounting base.

[0028] A reinforcing plate is fixedly installed on the inner wall of the support sleeve, and the reinforcing plate is movably clamped between two triangular tubes on the same side wall of the square tube;

[0029] The movement of the upper fixed seat causes the mounting seat to move, which in turn causes the square tube and triangular tube to move simultaneously, and the reinforcing plate slides between the triangular tubes.

[0030] Preferably, the adjusting member comprises:

[0031] The ceiling track consists of two tracks, both of which are parallel to the ground track and are symmetrically fixed to the building ceiling.

[0032] The connecting frame is movably abutted against the upper surface of the upper fixed seat, and the front and rear ends of the connecting frame are respectively slidably set on the front and rear side rails.

[0033] The guide rail is fixedly mounted on the lower surface of the connecting frame, and the upper fixed seat is slidably mounted on the guide rail.

[0034] An electric lead screw assembly is fixedly mounted on the lower surface of the connecting frame, and the output end of the electric lead screw assembly is fixedly mounted on the upper fixed seat.

[0035] When the lower fixed seat moves left and right, the upper fixed seat moves synchronously through the support sleeve and support rod. Then, the upper fixed seat drives the connecting frame to slide on the ceiling rail through the guide slide rail. When the support sleeve and support rod are adjusted to rotate and tilt back and forth, the upper fixed seat moves back and forth on the guide slide rail through the electric screw pair. Then, the upper fixed seat drives the upper end of the crossbar to move back and forth through the upper shaft seat. When the support rod moves, it drives the support sleeve to rotate and moves in and out of the support sleeve at the same time.

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] 1. The support sleeve is screwed onto the lower shaft seat via the lower fixed shaft, and the support rod is screwed onto the upper shaft seat via the upper fixed shaft. The support rod is movably inserted into the support sleeve. The upper fixed seat moves back and forth on the guide slide rail, thereby driving the upper shaft seat to move back and forth, which in turn drives the support sleeve and support rod to rotate back and forth to adjust the tilt angle, thus achieving support when the side wall of the material is inclined after stacking.

[0038] 2. The support sleeve is slidably mounted on the ground rail via the lower fixed seat, and the support rod is slidably mounted on the ceiling rail via the connecting frame. The upper guide rail and upper fixed seat on the connecting frame control the rotation of the support sleeve and support rod, which facilitates the parallel installation of multiple sets of support sleeves and support rods to work together, and saves installation space on the ground. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of the present invention.

[0040] Figure 2 yes Figure 1 AA section view in the image.

[0041] Figure 3 yes Figure 1 BB cross-section diagram.

[0042] Figure 4 yes Figure 2 Enlarged view of section C in the image.

[0043] Figure 5 This is a schematic diagram of the connection structure of the ground rail, mounting groove, lower fixing seat, and cover plate in this invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. Base plate; 2. Mounting groove; 3. Ground rail; 4. Lower connector; 4-1. Lower fixed seat; 4-2. Lower shaft seat; 4-3. Lower support shaft; 4-4. Support sleeve; 5. Upper connector; 5. Support rod; 5-1. Mounting seat; 5-1-1. Square tube; 5-1-2. Triangular tube; 5-1-3. Upper support shaft; 5-2. Upper fixed seat; 5-3. Upper shaft seat; 5-4. Adjusting component; 6. Top rail; 6-1. Connecting frame; 6-2. Guide slide rail; 6-3. Electric lead screw pair; 6-4. Slot; 7. Cover plate; 8. Support platform; 9. Guide plate; 10. Reinforcing plate; 11. Detailed Implementation

[0046] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Example 1:

[0048] like Figure 1 , 2 As shown, this embodiment includes a substrate 1, a mounting groove 2, and a ground rail 3. The mounting groove 2 is fixed to the side wall of the substrate 1 by bolts, and the upper side of the mounting groove 2 is lower than the upper surface of the substrate 1. The ground rail 3 is fixed to the lower inner side wall of the mounting groove 2 by bolts. It also includes:

[0049] Lower connector 4 is mounted on ground rail 3;

[0050] Upper connector 5, wherein the upper connector 5 is disposed on the lower connector 4;

[0051] Adjusting component 6 is disposed on the upper connecting component 5 and is disposed on the building ceiling;

[0052] With the above design, the lower connector 4 and the upper connector 5 form a whole and are mounted between the ground rail 3 and the adjusting member 6. Materials are arranged and stacked on the base plate 1 and supported by the lower connector 4 and the upper connector 5. When the support tilt angle of the lower connector 4 and the upper connector 5 is adjusted, the adjusting member 6 drives the upper connector 5 to rotate, which in turn drives the lower connector 4 to rotate.

[0053] Example 2:

[0054] like Figure 1 , 2 As shown in Figure 4, based on the above embodiment 1, the lower connector 4 includes:

[0055] Lower fixed seat 4-1, wherein the lower fixed seat 4-1 is slidably mounted on the ground rail 3;

[0056] The lower shaft seat 4-2 is fixed to the upper surface of the lower fixed seat 4-1 by bolts;

[0057] The lower support shaft 4-3 is screwed onto the lower shaft seat 4-2 via a bearing.

[0058] Support sleeve 4-4 is fixed to the lower support shaft 4-3 by bolts, and the upper end of the support sleeve 4-4 is open;

[0059] With the above design, when using the lower connector 4, the support sleeve 4-4 rotates back and forth via the lower support shaft 4-3, thereby supporting the stacked materials. When the vertical surface of the materials is tilted, the support sleeve 4-4 is placed against the vertical surface of the materials by rotating back and forth. When adjusting the left and right position of the support sleeve 4-4, the lower fixed seat 4-1 is slid left and right on the ground rail 3 to adjust its position, thereby moving the support sleeve 4-4 left and right.

[0060] Example 3:

[0061] like Figure 4 , 5 As shown, based on the above embodiment 2, the mounting groove 2 is fixed with a slot 7 by bolts on the upper side away from the substrate 1, and a cover plate 8 is movably inserted into the slot 7. The mounting groove 2 is fixed with a support platform 9 by bolts on the inner side wall of one side of the substrate 1. The end of the cover plate 8 away from the slot 7 is movably mounted on the support platform 9. The left and right side walls of the lower fixing seat 4-1 are symmetrically fixed with bolts with guide plates 10, and the guide plates 10 are movably abutted against the support platform 9 on one side of the support platform 9.

[0062] With the above design, when the lower fixed seat 4-1 moves left and right, the lower fixed seat 4-1 drives the guide plate 10 to move. When the guide plate 10 contacts the cover plate 8, the cover plate 8 is pushed away from the support 9 and then pushed into the slot 7. After the lower fixed seat 4-1 has moved, the cover plate 8 inserted into the slot 7 is pulled out and the rear end of the cover plate 8 is placed on the support 9, so that the cover plate 8 covers the upper port of the mounting slot 2.

[0063] Example 4:

[0064] like Figure 1 , 2 As shown, based on the above embodiment 2, the upper connector 5 includes:

[0065] Support rod 5-1, wherein the support rod 5-1 is movably inserted into the support sleeve 4-4 through the upper port of the support sleeve 4-4;

[0066] The upper support shaft 5-2 is fixed to the upper end of the support rod 5-1 by bolts;

[0067] Upper fixing seat 5-3 is disposed above support rod 5-1;

[0068] The upper shaft seat 5-4 is fixed to the lower surface of the upper fixed seat 5-3 by bolts, and the upper support shaft 5-2 is screwed onto the upper shaft seat 5-4 by bearings;

[0069] With the above design, the support rod 5-1 is inserted into the support sleeve 4-4 and moves up and down, thereby supporting the materials stacked on the substrate 1 through the support sleeve 4-4 and the support rod 5-1.

[0070] Example 5:

[0071] like Figure 1 , 3 As shown, based on the above embodiment 4, the support rod 5-1 includes:

[0072] Mounting base 5-1-1, wherein the mounting base 5-1-1 is fixed to the upper support shaft 5-2 by bolts;

[0073] Square tube 5-1-2, the square tube 5-1-2 is fixed to the lower surface of mounting base 5-1-1 by bolts, and the lower end of square tube 5-1-2 is movably inserted into support sleeve 4-4;

[0074] Triangular tube 5-1-3, there are several triangular tubes 5-1-3, and they are symmetrically fixed to the side wall of square tube 5-1-2 in pairs by bolts. The upper end of triangular tube 5-1-3 is fixed to the lower surface of mounting base 5-1-1 by bolts.

[0075] A reinforcing plate 11 is fixed to the inner wall of the support sleeve 4-4 by bolts. The reinforcing plate 11 is movably clamped between two triangular tubes 5-1-3 on the same side wall of the square tube 5-1-2.

[0076] With the above design, the movement of the upper fixed seat 5-3 drives the movement of the mounting seat 5-1-1, which in turn drives the square tube 5-1-2 and the triangular tube 5-1-3 to move simultaneously, and the reinforcing plate 11 slides between the triangular tube 5-1-3.

[0077] Example 6:

[0078] like Figure 1 , 2 As shown, based on the above embodiment 4, the adjusting member 6 includes:

[0079] The ceiling rail 6-1 consists of two rails, both of which are parallel to the ground rail 3. The ceiling rails 6-1 are symmetrically fixed to the building ceiling with bolts.

[0080] The connecting frame 6-2 is movably abutted against the upper surface of the upper fixed seat 5-3, and the front and rear ends of the connecting frame 6-2 are respectively slidably set on the front and rear rails 6-1 on the front and rear sides.

[0081] The guide slide rail 6-3 is fixed to the lower surface of the connecting frame 6-2 by bolts, and the upper fixed seat 5-3 is slidably mounted on the guide slide rail 6-3;

[0082] Electric lead screw assembly 6-4 is fixed to the lower surface of connecting frame 6-2 by bolts, and the output end of electric lead screw assembly 6-4 is fixed to upper fixed seat 5-3 by bolts.

[0083] With the above design, when the lower fixed seat 4-1 moves left and right, the upper fixed seat 5-3 moves synchronously through the support sleeve 4-4 and the support rod 5-1. Then, the upper fixed seat 5-3 drives the connecting frame 6-2 to slide on the top rail 6-1 through the guide slide rail 6-3. When the support sleeve 4-4 and the support rod 5-1 are adjusted to rotate and tilt back and forth, the upper fixed seat 5-3 moves back and forth on the guide slide rail 6-3 through the electric screw pair 6-4. Then, the upper fixed seat 5-3 drives the upper end of the crossbar to move back and forth through the upper shaft seat 5-4. When the support rod 5-1 moves, it drives the support sleeve 4-4 to rotate and simultaneously moves in and out of the support sleeve 4-4.

[0084] By adopting the technical solution disclosed in this invention, the following can be achieved:

[0085] When using this equipment, materials are arranged and stacked on the base plate 1, and supported by the support sleeve 4-4 and support rod 5-1 against the side wall of the stacked goods. When the side wall of the stacked goods is inclined, the support sleeve 4-4 and support rod 5-1 are adjusted to rotate and tilt back and forth. At this time, the electric screw pair 6-4 drives the upper fixed seat 5-3 to slide back and forth on the guide rail 6-3. Then, the upper fixed seat 5-3 drives the upper end of the support rod 5-1 to slide back and forth through the upper shaft seat 5-4. 1. The support sleeve 4-4 rotates back and forth with the lower fixed shaft as support, and the support rod 5-1 moves back and forth with the upper fixed shaft as support. When the support rod 5-1 moves back and forth, it extends and retracts within the support sleeve 4-4. It slides on the top rail 6-1 via the connecting frame 6-2 and on the ground rail 3 via the lower fixed seat 4-1. The connecting frame 6-2 and the lower fixed seat 4-1 slide synchronously, thereby driving the support sleeve 4-4 and the material layer to move left and right, thus adjusting the left and right position to support the material.

[0086] The technical advantages achieved by adopting the above technical solution are as follows:

[0087] 1. The support sleeve 4-4 is screwed onto the lower shaft seat 4-2 via the lower fixed shaft, and the support rod 5-1 is screwed onto the upper shaft seat 5-4 via the upper fixed shaft. The support rod 5-1 is movably inserted into the support sleeve 4-4. The upper fixed seat 5-3 moves back and forth on the guide slide rail 6-3, thereby driving the upper shaft seat 5-4 to move back and forth, thereby driving the support sleeve 4-4 and the support rod 5-1 to rotate back and forth to adjust the tilt angle, thus achieving support when the side wall of the material is inclined after stacking.

[0088] 2. The support sleeve 4-4 is slidably mounted on the ground rail 3 via the lower fixed seat 4-1, and the support rod 5-1 is slidably mounted on the ceiling rail 6-1 via the connecting frame 6-2. The upper guide rail 6-3 and the upper fixed seat 5-3 on the connecting frame 6-2 control the rotation of the support sleeve 4-4 and the support rod 5-1, thereby facilitating the parallel installation of multiple sets of support sleeves 4-4 and support rods 5-1 to work together, and saving installation space on the ground.

[0089] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the protection scope of this invention.

Claims

1. A support device for warehouse management with an anti-tilting structure, comprising a base plate (1), a mounting groove (2), and a ground rail (3), wherein the mounting groove (2) is fixedly disposed on the side wall of the base plate (1), and the upper side of the mounting groove (2) is lower than the upper surface of the base plate (1), and the ground rail (3) is fixedly disposed on the lower inner side wall of the mounting groove (2); characterized in that, It also includes: The lower connector (4) is mounted on the ground rail (3); Upper connector (5), which is disposed on lower connector (4); Adjusting member (6), the adjusting member (6) is disposed on the upper connecting member (5), and the adjusting member (6) is disposed on the building ceiling; The lower connector (4) and the upper connector (5) form a whole and are mounted between the ground rail (3) and the adjusting member (6). The materials are arranged and stacked on the substrate (1) and supported by the lower connector (4) and the upper connector (5). When the support tilt angle of the lower connector (4) and the upper connector (5) is adjusted, the upper connector (5) is rotated by the adjusting member (6), which in turn drives the lower connector (4) to rotate. The upper connector (5) includes: Support rod (5-1); The upper support shaft (5-2) is fixedly installed at the upper end of the support rod (5-1); Upper fixing seat (5-3), the upper fixing seat (5-3) is arranged above the support rod (5-1); The upper shaft seat (5-4) is fixedly mounted on the lower surface of the upper fixed seat (5-3), and the upper support shaft (5-2) is spun onto the upper shaft seat (5-4) via a bearing; The adjusting member (6) includes: Sky rail (6-1), there are two sky rails (6-1), both of which are set parallel to the ground rail (3). The sky rails (6-1) are symmetrically fixed on the roof of the building. The connecting frame (6-2) is movably abutted against the upper surface of the upper fixed seat (5-3), and the front and rear ends of the connecting frame (6-2) are respectively slidably set on the front and rear rails (6-1) on the front and rear sides. The guide slide rail (6-3) is fixedly mounted on the lower surface of the connecting frame (6-2), and the upper fixed seat (5-3) is slidably mounted on the guide slide rail (6-3). An electric lead screw assembly (6-4) is fixedly mounted on the lower surface of the connecting frame (6-2), and the output end of the electric lead screw assembly (6-4) is fixedly mounted on the upper fixed seat (5-3). The lower connector (4) includes: The lower fixed seat (4-1) is slidably mounted on the ground rail (3); The lower shaft seat (4-2) is fixedly mounted on the upper surface of the lower fixed seat (4-1); The lower support shaft (4-3) is screwed onto the lower shaft seat (4-2) via a bearing; The support sleeve (4-4) is fixedly mounted on the lower support shaft (4-3), and the upper end of the support sleeve (4-4) is open. The support rod (5-1) is movably inserted into the support sleeve (4-4) through the upper port of the support sleeve (4-4).

2. The arrangement-type warehouse management support device with an anti-tilting structure according to claim 1, characterized in that: When using the lower connector (4), the support sleeve (4-4) rotates back and forth through the lower support shaft (4-3), thereby supporting the stacked materials. When the vertical surface of the material is tilted, the support sleeve (4-4) is attached to the vertical surface of the material by rotating back and forth. When adjusting the left and right position of the support sleeve (4-4), the lower fixed seat (4-1) is slid left and right on the ground rail (3) to adjust the position, thereby moving the support sleeve (4-4) left and right.

3. A support device for warehouse management with an anti-tilting structure according to claim 2, characterized in that: The mounting groove (2) is fixedly provided with a slot (7) on the upper side away from the substrate (1). A cover plate (8) is movably inserted into the slot (7). A support platform (9) is fixedly provided on the inner wall of the mounting groove (2) on one side of the substrate (1). One end of the cover plate (8) away from the slot (7) is movably mounted on the support platform (9). Guide plates (10) are symmetrically fixed on the left and right side walls of the lower fixing seat (4-1). The guide plates (10) are movably abutted against the support platform (9) on one side of the support platform (9). When the lower fixed seat (4-1) moves left and right, the lower fixed seat (4-1) drives the guide plate (10) to move. When the guide plate (10) contacts the cover plate (8), the cover plate (8) is pushed away from the support (9) and then pushed into the slot (7). After the lower fixed seat (4-1) has moved, the cover plate (8) inserted into the slot (7) is pulled out and the rear end of the cover plate (8) is placed on the support (9), so that the cover plate (8) covers the upper port of the mounting slot (2).

4. A support device for warehouse management with an anti-tilting structure according to claim 3, characterized in that: The support rod (5-1) is inserted into the support sleeve (4-4) and moves up and down, thereby supporting the material stacked on the substrate (1) through the support sleeve (4-4) and the support rod (5-1).

5. A support device for arranged storage management with an anti-tilting structure according to claim 4, characterized in that: The support rod (5-1) includes: Mounting base (5-1-1), wherein the mounting base (5-1-1) is fixedly mounted on the upper support shaft (5-2); The square tube (5-1-2) is fixedly installed on the lower surface of the mounting base (5-1-1), and the lower end of the square tube (5-1-2) is movably inserted into the support sleeve (4-4). The triangular tube (5-1-3) consists of several tubes, which are symmetrically fixed in pairs on the side wall of the square tube (5-1-2). The upper end of the triangular tube (5-1-3) is fixed on the lower surface of the mounting base (5-1-1). A reinforcing plate (11) is fixedly installed on the inner wall of the support sleeve (4-4), and the reinforcing plate (11) is movably clamped between two triangular tubes (5-1-3) on the same side wall of the square tube (5-1-2); The movement of the upper fixed seat (5-3) causes the mounting seat (5-1-1) to move, which in turn causes the mounting seat (5-1-1) to move the square tube (5-1-2) and the triangular tube (5-1-3) to move simultaneously, and the reinforcing plate (11) slides between the triangular tube (5-1-3).

6. A support device for warehouse management with an anti-tilting structure according to claim 5, characterized in that: When the lower fixed seat (4-1) moves left and right, the upper fixed seat (5-3) moves synchronously through the support sleeve (4-4) and support rod (5-1). Then, the upper fixed seat (5-3) drives the connecting frame (6-2) to slide on the ceiling rail (6-1) through the guide slide rail (6-3). When the support sleeve (4-4) and support rod (5-1) are adjusted to rotate and tilt back and forth, the upper fixed seat (5-3) moves back and forth on the guide slide rail (6-3) through the electric screw pair (6-4). Then, the upper fixed seat (5-3) drives the upper end of the support rod (5-1) to move back and forth through the upper shaft seat (5-4). When the support rod (5-1) moves, it drives the support sleeve (4-4) to rotate and moves in and out of the support sleeve (4-4).

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