Numerical control heavy gabion net machine

Abstract

The utility model discloses a numerical control heavy gabion net machine, including support, traction mechanism, twisting mechanism, drive equipment and control mechanism, wherein twisting mechanism includes slide plate, press plate and radius wheel set, the support is provided with drive equipment, drive equipment is connected with twisting mechanism, drive equipment includes rack drive equipment and dislocation drive equipment, and the rack drive equipment is connected with the dislocation drive equipment. The rack driving equipment and the dislocation driving equipment are matched with each other, a control mechanism and a thread twisting mechanism are arranged on the driving equipment, the rack driving equipment and the dislocation driving equipment are electrically connected with the control mechanism, the control mechanism is used for controlling and adjusting various parameters, and in the weaving process, different thread twisting modes can be set according to needs; according to the gabion box structure, the problems of twisting scattering and edge folding failure are avoided, the tensile strength and firmness of the gabion box structure are enhanced, all the parts are compact in structure and smooth in operation, and therefore the safety and stability of the gabion box structure are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gabion mesh processing equipment, in particular to a numerically controlled heavy-duty gabion mesh machine. Background Art

[0002] Gabion is a mesh structure woven from galvanized iron wire or plastic-coated iron wire. It is durable, breathable, flexible and impact-resistant. It is often used in various civil engineering and environmental protection projects such as land stabilization, flood control, river regulation, road slope protection, etc.

[0003] In the related art, gabions are woven by gabion machines. The required materials are first placed on the feeding mechanism, and then repeatedly woven through the machine to form gabions. Afterwards, the gabion mesh can be folded with folding equipment to form gabion mesh sheets.

[0004] However, the existing gabion mesh machine has a complex structure and a single way of weaving the gabion mesh, which makes it easy to loosen during the cutting and folding process, thereby reducing the tensile strength and firmness, and further affecting the safety and utilization rate of the gabion mesh. Utility Model Content

[0005] In order to solve the problems of complex structure of gabion mesh machine, single weaving method and easy loosening of gabion mesh, this utility model provides a CNC heavy-duty gabion mesh machine. The technical solutions adopted are as follows:

[0006] A CNC heavy-duty gabion mesh machine comprises a bracket, a traction mechanism is mounted on the bracket, and is characterized in that a screwing mechanism is provided between the bracket and the traction mechanism, the screwing mechanism comprises a slide plate, a pressure plate and a radius wheel set, a driving device is provided on the bracket, the driving device is connected to the screwing mechanism, the driving device comprises a rack driving device and a staggered driving device, and the rack driving device and the staggered driving device cooperate with each other;

[0007] The rack drive device is located at one end of the screw threading mechanism, and includes a first drive portion and a first moving portion. The first moving portion is engaged with the radial wheel set, and the first drive portion drives the first moving portion to reciprocate, thereby causing the screw threading mechanism to move back and forth to achieve screw threading.

[0008] The dislocation driving device is located at the other end of the screw threading mechanism, and the dislocation driving device includes a second driving part and a second moving part. The second moving part is connected to the slide. The second driving part drives the second moving part to move in a dislocation manner, so that the slide moves in a dislocation manner to achieve screw threading.

[0009] The driving device is provided with a control mechanism, and the screwing mechanism, the rack driving device and the offset driving device are all electrically connected to the control mechanism, and the control mechanism is used to control and adjust various parameters.

[0010] In some embodiments, the rack drive device includes a rack housing, a rack placed in the rack housing, and a first transmission assembly. A through hole is provided on the rack housing. One end of the rack passes through the through hole and is slidably connected to the thread tightening mechanism, and the other end is meshed with the first transmission assembly. The first transmission assembly reciprocates through the rack, thereby driving the radius wheel group to rotate to achieve thread tightening.

[0011] In some embodiments, the first transmission assembly includes a first gear, a second gear, and a spline shaft, the first gear and the second gear are connected via the spline shaft, and the first gear and the rack are meshed with each other;

[0012] Wherein, an adjustment square plate is provided on a side of the spline shaft away from the first gear, and the adjustment square plate is used to adjust the angle of the first transmission assembly.

[0013] In some embodiments, the first transmission assembly further includes a motor and a motor bracket, the motor is located on the motor bracket, one side of the motor bracket is fixedly connected to the rack housing, and the other side of the motor bracket is connected to the spline shaft;

[0014] The second gear is located in the motor bracket and is connected to the motor gear, driving the motor so that the rack drives the radial wheel set to rotate.

[0015] In some embodiments, the dislocation driving device includes a dislocation shell and a swinging assembly and a second transmission assembly placed in the dislocation shell. The swinging assembly includes an adjusting forward and reverse screw rod and a swinging disk. One end of the adjusting forward and reverse screw rod is rotatably connected to the slide plate, and the other end is rotatably connected to the swinging disk. The rotating disk is engaged with the second transmission assembly for transmission. The second transmission assembly is dislocated by the swinging assembly, thereby driving the radial wheel group to dislocate and move to achieve threading.

[0016] In some embodiments, the second transmission assembly includes a third gear, a fourth gear, and a connecting shaft, the third gear and the fourth gear are connected via the connecting shaft, and the fourth gear is meshed and connected to the offset servo motor.

[0017] In some embodiments, the screw threading mechanism has two groups of slides, and a groove is provided at one end of each group of slides along the thickness direction of the slides, and the groove is used to install the rack. Each group of slides includes a first slide and a second slide, and the edges opposite to the first slide and the second slide have multiple notches, and both ends of the radius wheel group are located at the notches.

[0018] In some embodiments, the radius wheel set consists of two radius wheels, each of which has a threading hole;

[0019] Wherein, a fifth gear is provided on the radius wheel set and meshes with the rack, driving the rack to drive the radius wheel set to rotate.

[0020] In some embodiments, a plurality of pressure plates are provided, one end of the pressure plate is fixedly connected to the bracket, and the other end is movably connected to the slide, and the pressure plate is used to limit the position of the slide.

[0021] In some embodiments, a wire passing shaft is further included, and the wire passing shaft is located at the bottom of the bracket, and both ends of the wire passing shaft are connected to the bracket through a bearing seat.

[0022] Compared with the prior art, the technical progress achieved by this utility model is:

[0023] The bracket of the utility model is provided with a driving device, which is connected to the wire twisting mechanism. The driving device includes a rack driving device and a staggered driving device. The rack driving device and the staggered driving device cooperate with each other. A control mechanism is provided on the driving device. The wire twisting mechanism, the rack driving device and the staggered driving device are all electrically connected to the control mechanism. The control mechanism is used to control the number of rotations and the drive of the radius wheel group. Through the cooperation of the driving device and the control mechanism, different wire twisting modes can be set as required during the weaving process to avoid the problems of cutting the twisted flowers and failing to fold the edges, so as to enhance the tensile strength and firmness of the gabion mesh structure, and the structures of each component are compact and the operation is smooth, thereby improving the safety and stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0025] In the attached figure:

[0026] Figure 1 This is a schematic diagram of the structure of the CNC heavy-duty gabion machine of the utility model;

[0027] Figure 2 It is a schematic diagram of the rack drive device in the utility model;

[0028] Figure 3 for Figure 1 Enlarged view of area A in the middle;

[0029] Figure 4 This is a schematic structural diagram of the dislocation drive device in the present utility model;

[0030] Figure 5 for Figure 1 Enlarged view of area B in the middle;

[0031] Figure 6 This is a schematic structural diagram of the medium radius wheel set of the utility model;

[0032] Figure 7 This is a schematic diagram of the CNC heavy-duty gabion mesh machine of the utility model.

[0033] In the figure: 1. bracket; 2. traction mechanism; 21. traction drive unit; 22. roller; 3. screw threading mechanism; 31. slide plate; 311. first slide plate; 312. second slide plate; 32. pressure plate; 33. radius wheel assembly; 331. radius wheel; 332. threading hole; 333. fifth gear; 34. groove; 35. notch; 4. drive device; 5. rack drive device; 51. first drive unit; 52. first moving unit; 53. rack housing; 531. through hole; 54. rack; 55. first transmission assembly; 551 , first gear; 552, second gear; 553, spline shaft; 554, adjustment square plate; 555, motor; 556, motor bracket; 6, offset drive device; 61, second drive unit; 62, second moving unit; 63, offset housing; 64, swing assembly; 641, adjustment forward and reverse screw rod; 642, swing plate; 65, second transmission assembly; 651, third gear; 652, fourth gear; 653, connecting shaft; 654, offset servo motor; 655, servo motor bracket; 7, control mechanism; 8, wire passing shaft. DETAILED DESCRIPTION

[0034] The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. The following embodiments of the present invention will be described in conjunction with the accompanying drawings.

[0035] like Figures 1 to 7 As shown, the utility model discloses a CNC heavy-duty gabion mesh machine, including a bracket 1 for supporting and installing the equipment, a traction mechanism 2 is installed on the bracket 1, and the traction mechanism 2 is used to guide and control the movement direction of the metal mesh. The traction mechanism 2 includes a traction drive part 21 and a roller 22. A screwing mechanism 3 is provided between the bracket 1 and the traction mechanism 2. In one example, as shown in FIG. Figures 1 to 5As shown, the traction drive part 21 is fixed to one side of the bracket 1. The traction drive part 21 can be a reducer. The roller shaft 22 can rotate relative to the bracket 1. The roller shaft 22 can be a barbed shaft, wherein the output end of the servo motor is connected to the barbed shaft gear. During the weaving process, the metal wire is placed on the barbed shaft, and the servo motor is driven to make the barbed shaft drive the metal wire to rotate. At the same time, the metal wire is twisted together under the fixation of the traction mechanism 2 and the rotation of the wire twisting mechanism 3, thereby forming a metal mesh. The wire twisting mechanism 3 includes a slide plate 31, a pressure plate 32 and a radius wheel group 33. Among them, the slide plate 31 is a rectangular structure, and both ends of the slide plate 31 are movably connected to the bracket 1. The slide plate 31 is used to assist the rotation of the radius wheel group 33.

[0036] It should be noted that the metal mesh in this application is a gabion mesh, which is a mesh structure woven from metal wires.

[0037] Continue to refer Figures 1 to 5 A driving device 4 is provided on the bracket 1. The driving device 4 provides power for the device. The driving device 4 is connected to the screw thread mechanism 3. The driving device 4 includes a rack driving device 5 and a dislocation driving device 6. The rack driving device 5 and the dislocation driving device 6 cooperate with each other. Specifically, the rack driving device 5 is located at one end of the screw thread mechanism 3 and is used to drive the movement of the screw thread mechanism 3. The rack driving device 5 includes a first driving part 51 and a first moving part 52. The first moving part 52 is engaged with the radius wheel set 33 to realize motion transmission. During the metal mesh weaving process, the first driving part 51 is driven, so that the first moving part 52 drives the screw thread mechanism 3 to rotate back and forth, thereby rotating the screw thread mechanism 3 to realize screw threading. The dislocation driving device 6 is located at the other end of the screw thread mechanism 3 and is used to realize the dislocation movement of the screw thread mechanism 3. The dislocation driving device 6 includes a second driving part 61 and a second moving part 62. The second moving part 62 is connected to the slide 31. The second driving part 61 drives the second moving part 62 to move in a dislocation, thereby causing the slide 31 to move in a dislocation to realize screw threading.

[0038] In one example, during the weaving of the metal mesh, the first drive unit 51 and the second drive unit 61 are started, and the first drive unit 51 drives the wire twisting mechanism 3 to rotate, while the second drive unit 61 drives the second moving unit 62 to move in an offset manner. Such rotation and offset movement will cause the wire twisting mechanism 3 to connect the metal wires at intervals, thereby realizing the interval twisting connection of the metal wires, and thus enabling the entire device to complete accurate and stable wire twisting operations, and through the coordinated action of the rack drive device 5 and the offset drive device 6, the device can efficiently complete the wire twisting task and ensure the strength and practicality of the metal mesh.

[0039] like Figure 1As shown, a control mechanism 7 is provided on the driving device 4, and the wire twisting mechanism 3, the rack driving device 5 and the offset driving device 6 are all electrically connected to the control mechanism 7 to achieve precise control of the entire device. The control mechanism 7 is used to control and adjust the motion parameters and working states of the wire twisting mechanism 3, the rack driving device 5 and the offset driving device 6. Through the electrical connection, the control mechanism 7 can send instructions to the driving device 4 to control the parameters such as the start, stop, speed and direction of the driving device 4. For example, the control mechanism 7 adjusts the number of rotations of the radius wheel group 33 to two circles, so that the twists on the woven metal mesh are all three twists. For another example, the control mechanism 7 adjusts the number of rotations of the radius wheel group 33 from three circles to four circles, so that the twists on the woven metal mesh are a combination of five twists and seven twists. The number of rotations, motion trajectory and speed of the radius wheel group of the wire twisting mechanism 3 are regulated by the control mechanism 7, thereby improving the accuracy and convenience of the device, and thereby improving the efficiency and quality of metal mesh weaving.

[0040] In some embodiments, as Figures 1 to 3 As shown, the rack drive device 5 includes a rack housing 53, a rack 54 and a first transmission assembly 55 placed in the rack housing 53. The rack housing 53 is a sealed shell for protecting the first transmission assembly 55 and the rack 54, effectively preventing the operator from accidentally touching it, thereby improving safety and stability. A through hole 531 is provided on the rack housing 53. One end of the rack 54 passes through the through hole 531 and is slidably connected to the screw thread mechanism 3, and the other end is meshed with the first transmission assembly 55. When the first transmission assembly 55 is started, the slide 31 on the screw thread mechanism 3 approaches or moves away from the rack housing 53, so that the first transmission assembly 55 reciprocates through the rack 54, effectively transmitting power to the screw thread mechanism 3, thereby driving the radius wheel group 33 of the screw thread mechanism 3 to rotate to achieve screw threading. By positioning the position and movement of the rack 54, smooth movement and stable operation of the screw thread mechanism 3 can be achieved, thereby improving the firmness and tensile strength of the metal mesh.

[0041] In some embodiments, continue to refer to Figures 1 to 3 The first transmission assembly 55 includes a first gear 551, a second gear 552 and a spline shaft 553. The first gear 551 and the second gear 552 are connected by the spline shaft 553 to form a transmission structure. The first gear 551 and the rack 54 are engaged with each other, wherein an adjustment square plate 554 is provided on the side of the spline shaft 553 away from the first gear 551. The adjustment square plate 554 is sleeved on the spline shaft 553. The adjustment square plate 554 can flexibly adjust the angle of the first transmission assembly 55, thereby realizing precise control and adjustment of the first transmission assembly 55 during movement, avoiding angle tilt, and ensuring the quality of subsequent weaving and the normal operation of the device.

[0042] In some embodiments, as Figures 1 to 3As shown, the first transmission assembly 55 also includes a motor 555 and a motor bracket 556. The motor 555 is installed on the motor bracket 556. The motor bracket 556 is arranged in the middle position of the rack housing 53. One side of the motor bracket 556 is fixedly connected to the rack housing 53, and the other side is connected to the spline shaft 553. The second gear 552 is located in the motor bracket 556 and is connected to the motor 555 gear. The motor 555 provides power to the rack 54, and drives the motor 555 to make the rack 54 drive the radius wheel group 33 to rotate.

[0043] In some embodiments, as Figures 1 to 5 As shown, the dislocation drive device 6 includes a dislocation housing 63 and a swing assembly 64 and a second transmission assembly 65 placed in the dislocation housing 63. The swing assembly 64 includes an adjustment screw rod 641 and a swing plate 642. One end of the adjustment screw rod 641 is rotatably connected to the slide plate 31, and the other end is rotatably connected to the swing plate 642. The swing plate 642 is engaged with the second transmission assembly 65 for transmission. The second transmission assembly 65 is dislocated by the swing assembly 64, thereby driving the radial wheel group 33 to dislocate and achieve screw threading. When the second transmission assembly 65 is started, the second transmission assembly 65 cooperates with the swing assembly 64 to move the adjustment screw rod 641 so that the slide plate 31 on the screw threading mechanism 3 drives the radial wheel group 33 to form a dislocation, thereby separating the metal wires to form a hexagonal structure mesh, thereby achieving the weaving of the metal mesh to enhance air permeability and vegetation.

[0044] In some embodiments, as Figure 3 and Figure 5 As shown, the second transmission assembly 65 provides transmission and power for the dislocation drive device 6. The second transmission assembly 65 includes a third gear 651, a fourth gear 652 and a connecting shaft 653. The third gear 651 and the fourth gear 652 are connected by the connecting shaft 653. The fourth gear 652 is engaged and connected to the dislocation servo motor 654. In one example, a servo motor bracket 655 is also provided on the second transmission assembly 65, wherein the dislocation servo motor 654 is provided on the servo motor bracket 655, and the fourth gear 652 is located in the servo motor bracket 655. The servo motor bracket 655 not only provides support and fixation for the dislocation servo motor 654, but also effectively protects the safety of the fourth gear 652, thereby achieving close connection and operational stability between components, thereby realizing coordinated operation between components.

[0045] In some embodiments, as Figure 1 and Figure 7As shown, the screwing mechanism 3 has two groups of slides 31. Along the thickness direction of the slides 31, one end of each group of slides 31 is provided with a groove 34. The groove 34 is used to install the rack 54. Each group of slides 31 includes a first slide 311 and a second slide 312. The edges of the first slide 311 and the second slide 312 facing each other have a plurality of notches 35. The shape of the notches 35 is adapted to the shape of the radius wheel set 33. Both ends of the radius wheel set 33 are located at the notches 35. For example, Figure 1 and Figure 7 As shown, the notches on the first slide 311 and the second slide 312 are both semicircular, and the radius wheel set 33 is located in the two semicircular notches 35, thereby achieving the dislocation and rotation of the radius wheel set 33.

[0046] In some embodiments, as Figure 1 and Figure 7 As shown, the radius wheel set 33 consists of two radius wheels 331, each radius wheel 331 has a threading hole 332, wherein a fifth gear 333 is provided on the radius wheel set 33 and meshes with the rack 54, driving the rack 54 to drive the radius wheel set 33 to rotate.

[0047] In some embodiments, as Figures 1 to 7 As shown, there are multiple pressing plates 32 on the screwing mechanism 3 , one end of the pressing plate 32 is fixedly connected to the bracket 1 , and the other end is movably connected to the slide 31 . The pressing plate 32 is used to limit the position of the slide 31 .

[0048] In some embodiments, as Figure 1 As shown, the CNC heavy-duty gabion mesh machine also includes a wire-passing spool 8, which is located at the bottom of the bracket 1. The wire-passing spool 8 is used to guide and support the wire passing of the metal wire to ensure the accurate transmission and arrangement of the metal wire when manufacturing the gabion mesh. Both ends of the wire-passing spool 8 are connected to the bracket 1 through a bearing seat, which helps to maintain its stability and balance while reducing unnecessary losses caused by friction and vibration.

[0049] The working principle of a CNC heavy-duty gabion machine of this utility model is:

[0050] like Figures 1 to 7As shown, when weaving the metal mesh (gabion mesh), the required number of rotations of the radius wheel group 33 is set by the control mechanism 7, that is, the number of twists of the woven metal mesh is set, and the metal wire is passed from the wire shaft 8 through the wire threading hole 332 of the radius wheel group 33 to the traction mechanism 2, and then the driving device 4 is turned on, so that the rack 54 on the rack driving device 5 drives the radius wheel group 33 to reciprocate, that is, the radius wheel group 33 rotates, and at the same time, the swing assembly 64 on the offset driving device 6 drives the slide 31 to move back and forth, that is, the first slide 311 and the second slide 312 are displaced and moved, so that the metal wire is woven to form a metal mesh, and the woven metal mesh is driven to move by the traction mechanism 2, so that it can be effectively stored and continuously woven, and the number of twists is controlled by the control mechanism, and the rack driving device 5 and the offset driving device 6 cooperate with each other to ensure the tensile strength and firmness of the metal mesh, avoid subsequent shearing or loose folding, and at the same time increase efficiency and improve product quality.

[0051] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A CNC heavy-duty gabion machine, comprising a bracket, on which a traction mechanism is mounted, characterized in that: A screw threading mechanism is provided between the bracket and the traction mechanism, the screw threading mechanism including a slide plate, a pressure plate and a radius wheel set; a driving device is provided on the bracket, the driving device is connected to the screw threading mechanism, the driving device includes a rack driving device and a staggered driving device, and the rack driving device and the staggered driving device cooperate with each other; The rack drive device is located at one end of the screw threading mechanism, and includes a first drive portion and a first moving portion. The first moving portion is engaged with the radial wheel set, and the first drive portion drives the first moving portion to reciprocate, thereby causing the screw threading mechanism to move back and forth to achieve screw threading. The dislocation driving device is located at the other end of the screw threading mechanism, and the dislocation driving device includes a second driving part and a second moving part. The second moving part is connected to the slide. The second driving part drives the second moving part to move in a dislocation manner, so that the slide moves in a dislocation manner to achieve screw threading. The driving device is provided with a control mechanism, and the screwing mechanism, the rack driving device and the offset driving device are all electrically connected to the control mechanism, and the control mechanism is used to control and adjust various parameters.

2. A CNC heavy-duty gabion machine according to claim 1, characterized in that: The rack drive device includes a rack housing, a rack placed in the rack housing, and a first transmission assembly. A through hole is provided on the rack housing. One end of the rack passes through the through hole and is slidably connected to the screw threading mechanism, and the other end is meshed with the first transmission assembly. The first transmission assembly reciprocates through the rack, thereby driving the radius wheel group to rotate to achieve screw threading.

3. A CNC heavy-duty gabion machine according to claim 2, characterized in that: The first transmission assembly includes a first gear, a second gear and a spline shaft, the first gear and the second gear are connected by the spline shaft, and the first gear and the rack are meshed with each other; Wherein, an adjustment square plate is provided on a side of the spline shaft away from the first gear, and the adjustment square plate is used to adjust the angle of the first transmission assembly.

4. A CNC heavy-duty gabion machine according to claim 3, characterized in that: The first transmission assembly further includes a motor and a motor bracket, wherein the motor is located on the motor bracket, one side of the motor bracket is fixedly connected to the rack housing, and the other side of the motor bracket is connected to the spline shaft; The second gear is located in the motor bracket and is connected to the motor gear, driving the motor so that the rack drives the radial wheel set to rotate.

5. The CNC heavy-duty gabion machine according to claim 1, characterized in that: The dislocation driving device includes a dislocation shell and a swinging assembly and a second transmission assembly placed in the dislocation shell. The swinging assembly includes an adjusting forward and reverse screw rod and a swinging disk. One end of the adjusting forward and reverse screw rod is rotatably connected to the slide plate, and the other end is rotatably connected to the swinging disk. The swinging disk is engaged with the second transmission assembly for transmission. The second transmission assembly is dislocated by the swinging assembly, thereby driving the radial wheel assembly to dislocate and move to achieve screwing.

6. The CNC heavy-duty gabion machine according to claim 5, characterized in that: The second transmission assembly includes a third gear, a fourth gear and a connecting shaft. The third gear and the fourth gear are connected via the connecting shaft. The fourth gear is meshed and connected to the offset servo motor.

7. The CNC heavy-duty gabion machine according to claim 1, characterized in that: The screw threading mechanism has two groups of slides. Along the thickness direction of the slides, one end of each group of slides is provided with a groove, and the groove is used to install the rack. Each group of slides includes a first slide and a second slide. The edges opposite to the first slide and the second slide have multiple notches, and both ends of the radius wheel group are located at the notches.

8. The CNC heavy-duty gabion machine according to claim 7, characterized in that: The radius wheel set consists of two radius wheels, each of which has a threading hole. Wherein, a fifth gear is provided on the radius wheel set and meshes with the rack, driving the rack to drive the radius wheel set to rotate.

9. The CNC heavy-duty gabion machine according to claim 1, characterized in that: There are multiple pressing plates, one end of which is fixedly connected to the bracket and the other end is movably connected to the slide. The pressing plate is used to limit the position of the slide.

10. The CNC heavy-duty gabion machine according to claim 1, characterized in that: It also includes a wire passing shaft, which is located at the bottom of the bracket, and both ends of the wire passing shaft are connected to the bracket through a bearing seat.

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