Follow-up drag chain supporting mechanism and working method thereof

Abstract

The invention discloses a follow-up drag chain supporting mechanism and a working method thereof, and solves the problems that in the prior art, a drag chain support can only move in one direction along with a drag chain, and the drag chain support continues to move under the inertia effect after the drag chain stops moving. The follow-up type drag chain supporting mechanism has the beneficial effects that the follow-up movement and the braking function of a drag chain support are guaranteed, the follow-up type drag chain supporting mechanism comprises a guide rail and the drag chain support, the guide rail is fixed, the drag chain support comprises a supporting frame, the supporting frame can move in the length direction of the guide rail under the action of external force, and the supporting frame supports a first blocking piece and a second blocking piece; the second blocking piece and the guide rail are arranged in a spaced mode, the first blocking piece is bent towards the second blocking piece to adapt to bending of the drag chain, the first blocking piece and the second blocking piece are arranged in a spaced mode, and the drag chain is arranged in the length direction of the supporting frame and penetrates through the first blocking piece and the second blocking piece upwards. The drag chain can make contact with the first stopping piece or the second stopping piece in the moving process.

Description

Technical Field

[0001] This invention relates to the field of large machine tool processing equipment technology, and in particular to a follow-up drag chain support mechanism and its working method. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] A cable chain is a device used to secure cables, wires, air compressor pipes, and hydraulic pipes to facilitate their rotation and movement. Cable chains are used in machine tools with varying angles, such as large-format laser cutting machines. With the continuous optimization and advancement of laser cutting machines, large-format laser cutting machines have become a trend. However, due to their large size and excessive length, conventional cable chain support structures cannot support the latter half of the cable chain, causing it to sag and become damaged.

[0004] Existing technologies also disclose follow-up cable chain support mechanisms, which are equipped with cable chain brackets that can move along a track. The cable chain bracket includes pulley blocks at both ends, with a steel wire rope between the two pulley blocks. The cable chain is routed around the pulley block at one end of the cable chain bracket. Although the entire mechanism can move with the cable chain, the following problems exist: When the cable chain moves toward the side where the cable chain bracket is located, it can push the cable chain bracket to move, so that the cable chain bracket moves with the cable chain. However, when the cable chain moves toward the other side, because there is no restriction between the cable chain brackets, the cable chain bracket cannot achieve the following movement when the cable chain moves along the other side.

[0005] Even when the cable chain has stopped moving, the cable chain bracket will continue to move forward due to the inertia of movement, which makes the following braking function of the cable chain bracket weak and unable to stop the movement quickly when the cable chain stops moving. Summary of the Invention

[0006] To address the shortcomings of existing technologies, the purpose of this invention is to provide a follow-up cable chain support mechanism that can move with the cable chain, providing full support, fully protecting the cable chain, and preventing sagging.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: A follow-up cable chain support mechanism includes a guide rail and a cable chain bracket. The guide rail is fixed, and the cable chain bracket includes a support frame. Under the action of an external force, the support frame can move along the length direction of the guide rail. The support frame supports a first stop and a second stop. The second stop is spaced apart from the guide rail. The first stop bends toward the second stop to accommodate the bending of the cable chain. The first stop and the second stop are spaced apart. The cable chain is arranged along the length direction of the support frame and passes upward through the first stop and the second stop. During the movement of the cable chain, it can contact the first stop or the second stop.

[0008] As described above, in a follow-up drag chain support mechanism, one end of the support frame is provided with the first blocking member, the other end of the support frame is provided with an end support roller, and the middle section of the support frame is provided with a middle support roller. The first blocking member bends toward the middle support roller. The first blocking member, the end support roller, and the middle support roller can all move along the length direction of the guide rail. During the movement of the drag chain, the upper side of the bent drag chain can contact the middle support roller and the end support roller.

[0009] In the aforementioned follow-up drag chain support mechanism, the second resisting element is disposed between the first resisting element and the central support roller. The distance between the second resisting element and the first resisting element is less than the distance between the second resisting element and the central support roller, and the distance between the first resisting element and the second resisting element is greater than the thickness of the drag chain.

[0010] As described above, in a follow-up cable chain support mechanism, the first resisting element is placed on the outside of the cable chain bend, and the second resisting element is placed on the inside of the cable chain bend. The first resistive element includes an arc-shaped idler bracket, which can move along the guide rail and supports a plurality of first idlers. The distance between adjacent first idlers is set, and some first idlers are set higher than the support frame. The first idlers are rotatable relative to the arc-shaped idler bracket.

[0011] As described above, in a follow-up drag chain support mechanism, the arc-shaped idler roller bracket is supported by a bracket seat, which is connected to the support frame. The bracket seat movably supports multiple rollers on the side away from the first idler roller, and the rollers can roll along the guide rail.

[0012] As described above, in a follow-up drag chain support mechanism, the second resisting element includes a second resisting element bracket, which movably supports a second idler roller. The second resisting element bracket is fixed to the support frame, and the second idler roller is positioned towards the first resisting element.

[0013] As described above, in a follow-up cable chain support mechanism, the end support roller and the middle support roller have the same structure. The middle support roller includes an H-shaped bracket, which is connected to the support frame. A third roller is provided on the top side of the H-shaped bracket and is rotatable relative to the H-shaped bracket. A roller is movably provided at the bottom of the H-shaped bracket and can roll along the guide rail.

[0014] As described above, in a follow-up drag chain support mechanism, the support frame includes multiple support rods, which are placed on one side of the guide rail, with a distance between the support rods and the guide rail, and are positioned on opposite sides of the central support roller.

[0015] As described above, a follower-type cable chain support mechanism includes two guide rails connected together, with a protective cover between the two guide rails. The cable chain passes through the protective cover, and each guide rail has a protrusion, with the roller engaging with the protrusion.

[0016] Secondly, this invention discloses a working method for a follow-up cable chain support mechanism, comprising the following: The guide rail is fixed, the cable chain is set along the length of the support frame, and the cable chain passes upward through the first and second blocking elements. When the cable chain moves in the first direction, it contacts the first blocking element, pushing the first blocking element to drive the cable chain bracket to move in the first direction, thereby realizing the following function of the cable chain bracket in the first direction. When the cable chain stops running, the cable chain contacts the second blocking element to restrict the cable chain bracket from continuing to move in the first direction, thereby realizing the following braking function of the cable chain bracket in the first direction. When the cable chain moves in the second direction, it contacts the second stop, pushing the second stop to drive the cable chain bracket to move in the second direction, thereby realizing the following function of the cable chain bracket in the second direction. When the cable chain stops running, the cable chain contacts the first stop, restricting the cable chain bracket from continuing to move in the second direction, thereby realizing the following braking function of the cable chain bracket in the second direction.

[0017] The beneficial effects of the present invention are as follows: 1) The cable chain support mechanism provided by the present invention allows the cable chain bracket to move along the length of the guide rail. The cable chain bracket is also provided with a first blocking element and a second blocking element. The cable chain passes upward through the first blocking element and the second blocking element. During the movement of the cable chain, it can contact the first blocking element or the second blocking element. Thus, when the cable chain moves toward the first blocking element, it can push the first blocking element and thus push the entire cable chain bracket to move toward the first direction. When the cable chain moves toward the second blocking element, it can push the second blocking element and thus push the entire cable chain bracket to move toward the second direction. In this way, regardless of whether the cable chain moves toward the first direction or the second direction, the cable chain bracket can follow the movement, avoiding the cable chain from sagging and being damaged.

[0018] 2) In this invention, because the cable chain passes through the first and second blocking members, the cable chain can contact the first and second blocking members. When the cable chain stops after moving a set distance in the first direction, the first blocking member continues to drive the cable chain bracket to move in the first direction under the action of inertia. The second blocking member will contact the cable chain and then, because the cable chain stops moving, it will restrict the second blocking member from driving the cable chain bracket to continue moving in the first direction. Conversely, when the cable chain moves in the second direction, the same principle applies. This ensures the following braking function of the cable chain bracket, so that the cable chain bracket can stop moving quickly after the cable chain stops.

[0019] 3) In this invention, the positions of the first and second blocking components are reasonably set. The first blocking component is placed on the outside of the curved part of the cable chain, and the second blocking component is placed on the inside of the curved part of the cable chain. The structure of the first blocking component is reasonably set. The first blocking component includes an arc-shaped idler bracket. The arc-shaped idler bracket is bent towards the direction of the second blocking component to better fit the curved cable chain. The arc-shaped idler bracket supports the first idler, ensuring that the entire cable chain bracket follows the movement while avoiding interference with the movement of the cable chain.

[0020] 4) The cable chain support structure in this invention is reasonably designed. A first blocking element is provided at one end of the cable chain support, an end support roller is provided at the other end of the cable chain support, a middle support roller is provided in the middle section of the cable chain support, and a second blocking element is provided between the first blocking element and the middle support roller. This ensures the reasonable design of the cable chain and allows the cable chain to pass through the first and second blocking elements, ensuring the smooth realization of the overall function and ensuring the length of the cable chain support. This allows the cable chain to contact the middle support roller and the end support roller during movement, providing stable support for a longer cable chain. Attached Figure Description

[0021] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0022] Figure 1 This is a schematic diagram of a follower-type cable chain support mechanism according to one or more embodiments of the present invention.

[0023] Figure 2 This is a front view of a follower-type drag chain support mechanism according to one or more embodiments of the present invention.

[0024] Figure 3 This is a schematic diagram of a drag chain bracket in a follow-up drag chain support mechanism according to one or more embodiments of the present invention.

[0025] Figure 4 This is an exploded structural diagram of the first resistive element in a follower-type drag chain support mechanism according to one or more embodiments of the present invention.

[0026] Figure 5 This is an exploded view of the structure of the second resisting element in a follower-type drag chain support mechanism according to one or more embodiments of the present invention.

[0027] Figure 6 This is an exploded view of the central support roller in a follower-type drag chain support mechanism according to one or more embodiments of the present invention.

[0028] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0029] The components are: 1. Cable carrier bracket, 2. Cable carrier, 3. Guide rail, 4. Protective cover, 5. Wire guide trough; 6. Support frame, 7. Middle support roller, 8. First blocking element, 9. Second blocking element, 10. First roller, 11. Arc-shaped roller bracket, 12. Bracket seat, 13. Baffle, 14. V-shaped wheel frame, 15. Locking nut, 16. V-shaped wheel, 17. Hex bolt, 18. Second blocking element bracket, 19. Second roller, 20. Pressure plate, 21. Third roller, 22. H-shaped bracket, 23. L-shaped plate, 24. Support seat, 25. Arc-shaped support plate, 26. Vertical section. Detailed Implementation

[0030] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, unless otherwise expressly indicated by the invention, the singular form is also intended to include the plural form. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof. As described in the background section, in the prior art, the cable chain support can only follow the cable chain in one direction, and the cable chain support will continue to move under the action of inertia after the cable chain stops moving. In order to solve the above technical problems, the present invention proposes a follow-up cable chain support mechanism.

[0032] Example 1 In a typical embodiment of the present invention, reference is made to Figure 1 and Figure 2As shown, a follow-up cable chain support mechanism includes a guide rail 3 and a cable chain bracket 1. The guide rail 3 is fixed, and the cable chain bracket 1 includes a support frame. Under the action of external force, the support frame can move along the length direction of the guide rail 3. The support frame supports a first resisting member 8 and a second resisting member 9. The second resisting member 9 is spaced apart from the guide rail 3. The first resisting member 8 bends toward the second resisting member 9 to adapt to the bending of the cable chain. The first resisting member 8 and the second resisting member 9 are spaced apart. The cable chain 2 is arranged along the length direction of the support frame. The cable chain 2 passes upward through the first resisting member 8 and the second resisting member 9. During the movement of the cable chain 2, it can contact the first resisting member 8 or the second resisting member 9.

[0033] The cable chain support mechanism provided by this invention allows the cable chain 2 to contact either the first stop 8 or the second stop 9 during movement. When the cable chain moves towards the first stop 8, it pushes the first stop 8, thereby pushing the entire cable chain 2 support 1 towards the first direction. When the cable chain 2 moves towards the second stop 9, it pushes the second stop 9, thereby pushing the entire cable chain support 1 towards the second direction. This ensures that the cable chain support 1 follows the cable chain 2 regardless of whether it moves towards the first or second direction, preventing sagging and damage. When the cable chain 2 stops after moving a set distance towards the first direction, the first stop 8 continues to drive the cable chain support 1 towards the first direction due to inertia. The second stop 9 will contact the cable chain 2, but because the cable chain stops moving, it will restrict the second stop 9 from driving the cable chain support 1 to continue moving towards the first direction. Conversely, the same principle applies when the cable chain moves towards the second direction. This ensures the following braking function of the cable chain support 1, allowing it to quickly stop moving after the cable chain stops.

[0034] refer to Figure 1 As shown, the guide rail 3 includes two parallel guide rails 3 connected to each other. A protective cover 4 is provided between the two guide rails 3. The protective cover 4 is a door-shaped cover. Both sides of the protective cover 4 are fixed to the guide rails respectively. The width of the protective cover 4 is greater than the width of the cable chain 2. The cable chain 2 passes through the protective cover. A mounting seat is provided on the bottom side of the guide rail. The guide rail 3 is fixed to the ground or bed through the mounting seat. A wire groove 5 is provided on the bottom side of the guide rail 3 between two adjacent mounting seats. Some wires pass through the wire groove 5 to ensure the reasonable arrangement of the wiring.

[0035] In this embodiment, each guide rail 3 is provided with a protrusion, and a roller is provided on the bottom side of the support frame 6. The roller is a V-shaped wheel, and the V-groove of the V-shaped wheel 16 cooperates with the protrusion. Moreover, a limiting plate is provided on the inner side of the guide rail 3. The limiting plate is along the length direction of the guide rail and limits the inner side of the roller.

[0036] Considering that the cable chain bracket 1 is relatively long, refer to Figure 3As shown, a first blocking element 8 is provided at one end of the support frame 6, an end support roller is provided at the other end of the support frame 6, and a middle support roller 7 is provided in the middle section of the support frame 6. The first blocking element 8 bends toward the middle support roller 7. In this way, while ensuring the overall length of the cable chain bracket, the first blocking element 8, the end support roller and the middle support roller 7 can all move along the length direction of the guide rail 3. During the movement of the cable chain 2, the upper side of the bent cable chain can contact the middle support roller and the end support roller, so as to provide stable support for the longer cable chain 2 and prevent the cable chain 2 from sagging.

[0037] It is easy to understand that the second resisting element 9 is located between the first resisting element 8 and the middle support roller 7. The distance between the second resisting element 9 and the first resisting element 8 is less than the distance between the second resisting element 9 and the middle support roller 7. The distance between the first resisting element 8 and the second resisting element 9 is greater than the thickness of the drag chain 2.

[0038] In this embodiment, the support frame 6 includes multiple support rods. The support rods are placed on the upper side of the guide rail 3, and the support rods are spaced apart from the guide rail 3. The support rods are placed on opposite sides of the middle support roller 7. The first blocking member 8 and the middle support roller 7 are connected by two support rods, and the middle support roller 7 and the end support roller are connected by two support rods, so as to ensure the stability of the overall setup and avoid the support frame interfering with the moving cable chain.

[0039] It should be noted that, considering the following movement and following braking function of the cable chain bracket 1, the first blocking element 8 is placed on the outside of the bending point of the cable chain 2, and the second blocking element 9 is placed on the inside of the bending point of the cable chain 2. refer to Figure 4 As shown, the first resisting element 8 includes an arc-shaped roller bracket 11, which can move along the guide rail 3. The arc-shaped roller bracket 11 supports a plurality of first rollers 10. The distance between two adjacent first rollers 10 is set, and some first rollers 10 are set higher than the support frame. The first rollers 10 are rotatable relative to the arc-shaped roller bracket 1.

[0040] The arc-shaped idler bracket 11 is supported by a bracket base 12, which is connected to a support frame. The arc-shaped idler bracket 11 includes two arc-shaped support plates 25, which are connected by a transverse support rod. First idler rollers 10 are arranged on both sides of the transverse support rod. The bottom sides of the arc-shaped support plates 25 are respectively connected to U-shaped parts. The U-shaped parts are provided with slots, which are connected to the bracket base. The bracket base 12 includes a U-shaped base, the inner side of which is connected to the arc-shaped support plates. The sides of the U-shaped base are respectively provided with... A vertical section 26 is provided, which is a square tube. The U-shaped part is fixedly connected to the vertical section 26 by a slot. The support base 12 supports multiple rollers on the side away from the first roller. The rollers can roll along the guide rail. The support base can be equipped with four rollers. The rollers are installed by a V-shaped wheel frame 14. The rollers are V-shaped wheels 16. The V-shaped wheels 16 are installed by hexagonal bolts 17 and locking nuts 15. Baffles 13 are provided on both sides of the support base 12. The baffles are placed between two rollers on one side of the support base.

[0041] refer to Figure 5 As shown, the second resisting element 9 includes a second resisting element bracket 18, which movably supports the second idler roller 19. The second idler roller 19 is rotatable relative to the second resisting element bracket 18. The second resisting element bracket is fixed to the support frame. Specifically, the second resisting element bracket 18 is U-shaped. The top of both sides of the second resisting element bracket 18 are respectively provided with ears, and the ears are provided with openings to connect with the support rod. The second idler roller 19 is arranged in the direction of the first resisting element 8, so that the drag chain 2 contacts the second idler roller 19 to realize the movement of the drag chain 2 along the second idler roller.

[0042] It should be noted that the end support rollers and the middle support rollers 7 have the same structure, see reference. Figure 6 As shown, the middle support roller 7 includes an H-shaped bracket 22, which is connected to the support frame. A third roller 21 is provided on the top side of the H-shaped bracket. The third roller 21 is set higher than the support rod and can rotate relative to the H-shaped bracket 22. A roller is movably provided at the bottom of the H-shaped bracket. The roller can roll along the guide rail. The roller is also a V-shaped wheel 16. The V-shaped wheel 16 is also installed at the bottom of the H-shaped bracket through a V-shaped wheel frame 14.

[0043] In addition, support seats 24 are respectively provided inside both sides of the H-shaped bracket 22. The support seats are Z-shaped. One side of the support seat is attached to the H-shaped bracket 22, and the other side of the support seat 24 is provided with an opening to support the third idler roller 21. L-shaped plates 23 are also provided inside both sides of the H-shaped bracket 22. One side of the L-shaped plate 23 is fixed to the H-shaped bracket, and the other side limits the upper side of the end of the third idler roller 21.

[0044] The cable chain support mechanism provided in this embodiment has a reasonable overall structure. The length of the cable chain bracket 1 is ensured by the setting of the first blocking member 8, the middle support roller 7 and the end support roller. The middle support roller 7 and the end support roller can support the longer cable chain 2. The first blocking member 8 and the second blocking member 9 are set at the bending part of the cable chain to ensure that the cable chain bracket 1 can move together with the cable chain 2. The distance between the first blocking member 8 and the second blocking member 9 is controlled to ensure that the cable chain bracket can stop moving quickly when the cable chain stops moving.

[0045] Example 2 This embodiment discloses a working method for a follow-up cable chain support mechanism, including the following: In order to achieve the following function of the cable chain bracket 1, the guide rail 3 is fixed on the bed or the ground, the protective cover 4 and the wire groove 5 are fixed on the guide rail 3, forming an immovable rigid structure, and the cable chain passes through the second stop and the first stop of the cable chain bracket 1. When the cable chain 2 moves to the left, it pushes the first resistance element in the cable chain bracket 1, causing the cable chain bracket 1 to move to the left, thereby realizing the left-following function of the cable chain bracket 1. When the cable chain 2 stops running, the cable chain contacts the second resistance element, which restricts the cable chain bracket 1 from continuing to move to the left, thereby realizing the left-following braking function of the cable chain bracket 1.

[0046] When the cable chain 2 moves to the right, it pushes the second resistance element in the cable chain bracket 1, causing the cable chain bracket 1 to move to the right, thereby realizing the right-following function of the cable chain bracket 1. When the cable chain 2 stops running, the cable chain contacts the first resistance element, which restricts the cable chain bracket 1 from continuing to move to the right, thereby realizing the right-following braking function of the cable chain bracket 1.

[0047] In this way, the entire system can support the excessive length of the laser cutting machine cable chain. The cable chain support mechanism has been transformed from a fixed structure to a follow-up structure, and from having a power device to having no power device. The entire system does not require an additional power device, and the structure is simple and reliable, which greatly reduces the probability of failure. Because it is powerless, it also avoids the maintenance of the power device, reducing the investment of manpower and material resources.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A follow-up cable chain support mechanism, characterized in that, The device includes a guide rail and a cable chain bracket. The guide rail is fixed, and the cable chain bracket includes a support frame. Under the action of external force, the support frame can move along the length direction of the guide rail. The support frame supports a first stop and a second stop. The second stop is spaced apart from the guide rail. The first stop bends toward the second stop to accommodate the bending of the cable chain. The first stop and the second stop are spaced apart. The cable chain is arranged along the length direction of the support frame and passes upward through the first stop and the second stop. During the movement of the cable chain, it can contact the first stop or the second stop.

2. The follower-type cable chain support mechanism according to claim 1, characterized in that, The first resisting element is provided at one end of the support frame, the end support roller is provided at the other end of the support frame, and the middle support roller is provided in the middle section of the support frame. The first resisting element bends toward the middle support roller. The first resisting element, the end support roller and the middle support roller can all move along the length direction of the guide rail. During the movement of the drag chain, the upper side of the bent drag chain can contact the middle support roller and the end support roller.

3. The follower-type cable chain support mechanism according to claim 2, characterized in that, The second resisting element is disposed between the first resisting element and the middle support roller. The distance between the second resisting element and the first resisting element is less than the distance between the second resisting element and the middle support roller, and the distance between the first resisting element and the second resisting element is greater than the thickness of the cable chain.

4. The follower-type cable chain support mechanism according to claim 1, characterized in that, The first resisting element is placed on the outside of the bend in the cable chain, and the second resisting element is placed on the inside of the bend in the cable chain. The first resistive element includes an arc-shaped idler bracket, which can move along the guide rail and supports a plurality of first idlers. The distance between adjacent first idlers is set, and some first idlers are set higher than the support frame. The first idlers are rotatable relative to the arc-shaped idler bracket.

5. A follower-type cable chain support mechanism according to claim 4, characterized in that, The arc-shaped idler roller bracket is supported by a bracket seat, which is connected to the support frame. The bracket seat supports multiple rollers on the side away from the first idler roller, and the rollers can roll along the guide rail.

6. The follower-type cable chain support mechanism according to claim 1, characterized in that, The second resisting element includes a second resisting element bracket, which movably supports the second idler roller. The second resisting element bracket is fixed to the support frame, and the second idler roller is positioned towards the first resisting element.

7. A follower-type cable chain support mechanism according to claim 2, characterized in that, The end support roller has the same structure as the middle support roller. The middle support roller includes an H-shaped bracket, which is connected to the support frame. A third roller is provided on the top side of the H-shaped bracket and is rotatable relative to the H-shaped bracket. A roller is movably provided at the bottom of the H-shaped bracket and can roll along the guide rail.

8. A follower-type cable chain support mechanism according to claim 1, characterized in that, The support frame includes multiple support rods, which are placed on one side of the guide rail. The support rods are spaced apart from the guide rail and are positioned on opposite sides of the central support roller.

9. A follower-type cable chain support mechanism according to claim 5, characterized in that, The guide rails include two rails connected together, with a protective cover between the two rails. The cable chain passes through the protective cover. Each rail has a protrusion, and the roller engages with the protrusion.

10. The working method of the follow-up cable chain support mechanism according to any one of claims 1-9, characterized in that, Includes the following: The guide rail is fixed, the cable chain is set along the length of the support frame, and the cable chain passes upward through the first and second blocking elements. When the cable chain moves in the first direction, it contacts the first blocking element, pushing the first blocking element to drive the cable chain bracket to move in the first direction, thereby realizing the following function of the cable chain bracket in the first direction. When the cable chain stops running, the cable chain contacts the second blocking element to restrict the cable chain bracket from continuing to move in the first direction, thereby realizing the following braking function of the cable chain bracket in the first direction. When the cable chain moves in the second direction, it contacts the second stop, pushing the second stop to drive the cable chain bracket to move in the second direction, thereby realizing the following function of the cable chain bracket in the second direction. When the cable chain stops running, the cable chain contacts the first stop, restricting the cable chain bracket from continuing to move in the second direction, thereby realizing the following braking function of the cable chain bracket in the second direction.

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