A switchable double-station multi-wire saw machine

Abstract

This utility model belongs to the technical field of stone cutting equipment, specifically relating to a switchable dual-station multi-wire cutting machine, including a base, a roller support mounted on the base, multiple rollers mounted on the roller support, a lifting worktable inside the base, a wire feeding and take-up system located behind the base, and a power device providing power to the rollers; there are five rollers in total, including a first roller, a second roller, a third roller, a fourth roller, and a fifth roller. The roller support is configured to repeatedly and precisely support and fix the five rollers. When the fifth roller is installed, the diamond wire mesh is divided into a left wire mesh segment and a right wire mesh segment after being guided by the fifth roller, thus forming two independent short-span cutting stations on the left and right. When the fifth roller is removed, the diamond wire mesh is supported by the first roller, the second roller, the third roller, and the fourth roller to form a single long-span closed loop, constituting a single-station large-span cutting mode.

Description

Technical Field

[0001] This utility model belongs to the field of stone processing equipment technology, specifically relating to a switchable dual-station multi-wire cutting machine. Background Technology

[0002] Multi-wire cutting technology, with its advantages of high efficiency, low loss, and high surface quality, has been widely used in the thin-film processing of granite, marble, quartzite, and other stone materials, as well as hard and brittle materials such as silicon crystal and sapphire. Currently, mainstream multi-wire cutting machines generally adopt a four-roller or fixed five-roller layout: the roller group typically includes two drive wheels and two or three driven tension wheels, which together support and guide the high-speed reciprocating diamond wire mesh; the wire mesh span (i.e., the center distance between adjacent rollers) is preset by the rigidity of the overall equipment structure and cannot be adjusted; for large-size raw materials, a large-span single-station design is required to ensure complete cutting in a single feed; while for small-size slabs (such as narrow strips or irregularly shaped slabs) or high-hardness brittle materials (such as basalt and corundum), a short-span arrangement is urgently needed to suppress wire bow deformation and improve tension uniformity and operational stability. However, the existing equipment's roller layout, base, support, and tensioning system are highly integrated, with the wire mesh span and number of stations being rigidly fixed configurations. Large-span models, when used for small-piece processing, are prone to increased wire mesh vibration, higher breakage rates, greater kerf fluctuations, and excessive surface roughness. Small-span models, on the other hand, cannot meet the high-efficiency cutting requirements of large-size raw materials, necessitating the replacement of specialized equipment or multiple clamping operations, resulting in low equipment utilization and increased overall processing costs. Furthermore, the existing structures primarily feature non-removable, rigidly installed rollers, lacking mechanical interfaces and space for rapid reconfiguration of cutting paths under different working conditions. They also lack independent tension control, zoned cooling supply, and synchronous feed control mechanisms required for coordinated operation of left and right dual stations. "Multi-purpose machine" has long remained merely a concept. Utility Model Content

[0003] The technical problem to be solved by this utility model is: how to achieve physical-level, calibration-free, and rapid switching between two working modes, namely single-station large-span cutting and left-right dual-station short-span cutting, on a multi-wire cutting machine through a reconfigurable mechanical structure design, so as to simultaneously meet the rigid requirements of efficient whole cutting of large-size stone and high-stability parallel processing of small-size / hard and brittle materials, and overcome the fundamental defects of traditional equipment, such as fixed span, unique workstation, and difficulty in reconfiguration.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A switchable dual-station multi-wire cutting machine includes a base, a roller support mounted above the base, multiple rollers mounted on the roller support, a lifting worktable inside the base, a wire take-up and untake-down system located behind the base, and a power unit providing power to the rollers. There are five rollers in total: a first roller, a second roller, a third roller, a fourth roller, and a fifth roller. The axes of the first and second rollers are on the same horizontal plane, as are the axes of the third and fourth rollers. A detachable mounting bracket is provided between the third and fourth rollers for the installation of the fifth roller. Space is reserved, and the axis of the fifth roller is located below the horizontal plane formed by the axes of the third and fourth rollers; the roller bracket is configured to support and fix the five rollers in a repeatable and precise positioning manner. When the fifth roller is in the installed state, the diamond wire mesh is divided into a left wire mesh segment and a right wire mesh segment after being guided by the fifth roller, thus forming two independent short-span cutting stations on the left and right; when the fifth roller is removed, the diamond wire mesh is supported by the first, second, third, and fourth rollers to form a single long-span closed loop, constituting a single-station large-span cutting mode.

[0005] Preferably, each of the first, second, third, fourth, and fifth rollers is connected to an independent power unit at one end; the lifting worktable is used to drive the stone to be fed vertically upward to cut it by contact wire mesh; the wire take-up and release system includes two sets of wire take-up and release mechanisms arranged symmetrically on the left and right, used to synchronously take up and release the diamond wire mesh and maintain its tension balance.

[0006] Preferably, the projection of the axis of the fifth roller onto the horizontal plane formed by the axes of the third and fourth rollers falls on the line connecting the axes of the third and fourth rollers.

[0007] Preferably, the fifth roller is detachably installed in the reserved space between the third and fourth rollers via a combination of a positioning pin and a locking bolt, wherein the positioning pin is used for precise radial positioning and the locking bolt is used for axial clamping and fixing.

[0008] Preferably, the top of the roller bracket is provided with a cooling spray system, including multiple spray branches spaced apart on the same horizontal plane; the nozzles of the spray branches all face downward.

[0009] Preferably, the wire take-up and release system, the power unit, and the lifting work platform are electrically connected to a main control unit.

[0010] Preferably, the circumferential surface of the fifth roller is provided with a plurality of guide grooves that extend circumferentially and are spaced apart. The guide grooves have a V-shaped cross section, a depth of 0.3–0.5 mm, and a width of 1.2–1.8 mm.

[0011] Preferably, the roller bracket, the base, and the cable take-up and unwinding system are provided with a housing on their outer side, and the housing is provided with openable and closable maintenance doors on at least three sides.

[0012] Preferably, the cable take-up and release system includes two symmetrically arranged cable take-up and release devices, which are located directly behind the left and right sides of the base, respectively. Each cable take-up and release device includes at least three sets of guide wheels.

[0013] Preferably, the power unit includes a closed-loop tension feedback module. The signal input terminal of the module is connected to a tension sensor. The tension sensor is located on the guide wheel of the take-up and release system, which detects the tension value of the wire mesh segment it carries in real time and feeds the signal back to the main control unit to adjust the output torque of the corresponding power unit.

[0014] The technical solution provided by this utility model has at least the following technical effects: The first-ever dual-station switching mechanism with a detachable fifth roller in the middle position: the fifth roller is precisely installed on the line connecting the axes of the third and fourth rollers, so that the diamond wire mesh naturally forms a V-shaped bending fulcrum in the XZ plane, physically dividing the entire wire mesh into two independent short span segments on the left and right, fundamentally shortening the effective cutting span (by about 40%-60% compared to the single-station mode), significantly suppressing wire bow deformation, improving wire mesh tension uniformity and operational stability, and greatly reducing wire breakage rate and diamond wire consumption; Truly achieve "one machine, two modes, tool-free switching": The fifth roller adopts a quick-install structure of positioning pin + locking bolt, which does not require special tooling or recalibration and can be quickly disassembled and assembled. After switching, the position accuracy of the other four rollers remains basically unchanged, ensuring that both single and dual station modes have industrial-grade repeatability. System-level collaborative guarantee for stable operation of left and right dual workstations: The symmetrical wire feeding and take-up mechanism ensures strict synchronization of the wire feeding and take-up on both sides of the wire mesh; The lifting worktable can drive the stone through the left and right cutting areas simultaneously with a single vertical feed, achieving parallel processing and doubling efficiency; Multiple coplanar spray branches ensure uniform cooling coverage for both left and right workstations and avoid local overheating; The project boasts outstanding practicality and maintainability: all key components (roller brackets, base, and wire take-up and unwinding system) are equipped with openable maintenance doors, facilitating daily cleaning, roller replacement, and troubleshooting; the structural layout is compact and reasonable, compatible with existing factory space and electrical interfaces, and possesses strong industrialization capabilities. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention with the fifth roller installed in an embodiment; Figure 2 This is a schematic diagram of the structure of the housing in an embodiment of the present utility model; Figure 3 This is a structural schematic diagram from another angle of an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the roller bracket in an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of this utility model with the fifth roller removed in an embodiment; Figure 6 This is a schematic diagram of the structure of the lifting worktable according to an embodiment of the present utility model; Key reference numerals in the attached drawings: 10. Base; 11. Lifting worktable; 20. Roller support; 201. First roller; 202. Second roller; 203. Third roller; 204. Fourth roller; 205. Fifth roller; 21. Spraying system; 22. Power unit; 30. Cable take-up and unwinding system; 40. Housing; 50. Stone material; Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0018] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In the traditional stone and hard / brittle material processing field, multi-wire cutting machines are crucial equipment. Existing multi-wire cutting machines typically employ a fixed single-station design with a fixed wire mesh span. When processing small-sized stone or multiple pieces of hard / brittle materials, the excessively long wire mesh span easily leads to severe wire bow deformation and uneven wire tension distribution during cutting, resulting in high wire breakage rates, low cutting efficiency, and poor surface finish. Conversely, reducing the machine span to accommodate smaller workpieces proves insufficient for processing large-sized stone, failing to meet the overall cutting requirements of large workpieces. Therefore, current technology lacks a solution that can flexibly adjust the cutting mode according to different workpiece sizes, balancing processing efficiency and adaptability.

[0021] Based on the above issues, please refer to Figures 1-4 These are all structural diagrams of the present invention with the fifth roller 205 installed in the embodiment. The present invention provides a switchable dual-station multi-wire cutting machine, including a base 10, a roller support 20 disposed above the base 10, multiple rollers mounted on the roller support 20, a lifting worktable 11 disposed inside the base 10, a wire take-up and unwinding system 30 disposed behind the base 10, and a power device 22 providing power to the rollers; there are five rollers in total, including a first roller 201, a second roller 202, a third roller 203, a fourth roller 204, and a fifth roller 205, wherein the axes of the first roller 201 and the second roller 202 are located on the same horizontal plane, the axes of the third roller 203 and the fourth roller 204 are located on the same horizontal plane, and the fifth roller 205 is... A reserved space is provided between roller 203 and fourth roller 204 for the detachable installation of fifth roller 205, and the axis of fifth roller 205 is located below the horizontal plane formed by the axes of third roller 203 and fourth roller 204; the roller bracket 20 is configured to support and fix the five rollers in a repeatable and precise positioning manner. When fifth roller 205 is in the installation state, the diamond wire mesh is divided into a left wire mesh segment and a right wire mesh segment after being guided by fifth roller 205, thereby forming two independent short-span cutting stations on the left and right; when fifth roller 205 is removed, the diamond wire mesh is supported by first roller 201, second roller 202, third roller 203 and fourth roller 204 to form a single long-span closed loop, constituting a single-station large-span cutting mode.

[0022] The base 10 provides a basic support structure for the entire machine. Its material can be cast iron, welded steel components, or other materials with sufficient rigidity and stability. Specific dimensions and shapes can be set according to actual conditions, and this embodiment does not impose any special limitations on them. The base 10 supports the upper roller bracket 20 and the internal lifting worktable 11 in the overall technical solution, ensuring the stability of the equipment during operation.

[0023] The roller bracket 20 refers to a frame structure located above the base 10 for mounting and supporting the rollers. It can be a gantry structure, a column structure, or other structural form capable of maintaining the relative stability of the rollers' positions. The roller bracket 20 is configured to repeatedly and precisely support and fix five rollers. This means that when the fifth roller 205 is repeatedly disassembled and reassembled, the roller bracket 20 ensures that the remaining rollers and the reinstalled fifth roller 205 return to their preset precise positions, thereby ensuring the consistency of the wire mesh path. The roller bracket 20 is connected to the base 10, together forming the main skeleton of the equipment.

[0024] Each of the first roller 201, the second roller 202, the third roller 203, the fourth roller 204, and the fifth roller 205 has an independent power unit 22 connected to one end; the lifting worktable 11 is used to drive the stone 50 to feed upward in the vertical direction to cut it by contact wire mesh; the wire take-up and release system 30 includes two sets of wire take-up and release mechanisms arranged symmetrically on the left and right, which are used to synchronously take up and release the diamond wire mesh and maintain its tension balance.

[0025] The lifting worktable 11 refers to a platform located inside the base 10 for supporting the stone 50 to be processed and for feeding it. Its direction of movement is typically vertical. The lifting worktable 11 can move up and down via screw drive, hydraulic drive, or rack and pinion, driving the stone 50 upwards to contact the diamond wire mesh supported by rollers for cutting. The lifting worktable 11 cooperates with the base 10 to achieve the feeding movement of the workpiece relative to the wire mesh.

[0026] The take-up and release system 30 refers to a system located behind the base 10 for providing the diamond wire mesh and maintaining its tension. It includes take-up and release devices located directly behind the left and right sides of the base 10, with at least three sets of small guide rollers. The take-up and release system 30 works in conjunction with each roller to form a closed or segmented loop of the diamond wire mesh between the rollers, maintaining constant tension during the cutting process.

[0027] As a preferred embodiment, in this embodiment, the projection of the axis of the fifth roller 205 onto the horizontal plane formed by the axes of the third roller 203 and the fourth roller 204 falls at the midpoint of the line connecting the axes of the third roller 203 and the fourth roller 204. The position of the fifth roller 205 can be adjusted according to the actual use, and this embodiment does not impose any special limitations on this.

[0028] The fifth roller 205 is detachably installed in the reserved space between the third roller 203 and the fourth roller 204 through a combination structure of a positioning pin and a locking bolt, wherein the positioning pin is used for precise radial positioning and the locking bolt is used for axial clamping and fixing.

[0029] The roller bracket 20 is provided with a cooling spray system 21 at the top, which includes multiple spray branches spaced apart on the same horizontal plane; in this embodiment, the number of spray branches is preferably 5, and the nozzles of the spray branches are all facing downward.

[0030] In a preferred embodiment, the take-up and release system 30, the power unit 22, and the lifting worktable 11 are electrically connected to a main control unit. The main control unit can be a central control device used to receive operation commands, process sensor signals, and output control signals to coordinate the actions of various actuators. In this application, the main control unit functions as the control core of the entire machine, establishing information interaction and logical linkage between the take-up and release system 30, the power unit 22, and the lifting worktable 11. The main control unit can establish electrical connections with the take-up and release system 30, the power unit 22, and the lifting worktable 11 via a wired communication bus or a wireless communication module, thereby achieving unified scheduling of wire mesh tension, roller speed, and worktable feed speed during the stone cutting process. For example, when the main control unit receives a command to switch processing modes, it can automatically adjust the output torque strategy of the power unit 22 and synchronously control the feed rhythm of the lifting worktable 11 to ensure the stability of wire mesh operation under different span modes. The specific implementation of the main control unit can be set according to the actual situation. For example, it can be an industrial programmable logic controller (PLC), an embedded microcontroller (MCU), or an industrial computer. This application embodiment does not make any special limitation on this.

[0031] The power unit 22 includes a closed-loop tension feedback module. The signal input terminal of the module is connected to a tension sensor. The tension sensor is located on the guide wheel of the take-up and release system 30. It detects the tension value of the wire mesh segment it carries in real time and feeds the signal back to the main control unit to adjust the output torque of the corresponding power unit 22.

[0032] In one optional embodiment, the circumferential surface of the fifth roller 205 is provided with three circumferentially extending and spaced guide grooves. Each guide groove has a rectangular cross-section, a depth of 0.3 mm, and a width of 1.2 mm. The guide groove can refer to a groove structure machined on the circumferential surface of the fifth roller 205, and its shape can be V-shaped or other regular geometric shapes set according to actual friction requirements. This application embodiment does not impose special limitations on this, as long as it can achieve uniform force on the wire mesh in the circumferential direction.

[0033] In one optional embodiment, a housing 40 is provided on the outer side of the roller bracket 20, the base 10, and the cable take-up and unwinding system 30. The housing 40 is provided with an openable maintenance door. The housing 40 can be a closed or semi-closed structural component covering the outside of the equipment for protection. Its material can be set according to actual conditions; for example, it can be a steel plate, an aluminum alloy profile frame with a sheet metal panel, or an engineering plastic shell. This application embodiment does not make any special limitations on this. The housing 40 functions as a physical isolation barrier in the overall technical solution, used to enclose the core mechanical and electrical components such as the base 10, roller bracket 20, and cable take-up and unwinding system 30 within an internal space to prevent dust, moisture, and cutting fluid splashes from the external environment from entering the equipment, while also preventing accidental injury to operators from internal moving parts. The housing 40 is fixed to the base 10, roller bracket 20, and cable take-up and unwinding system 30 by bolt connections, welding, or snap-fit ​​connections, forming a stable external profile.

[0034] The maintenance door can refer to a movable component with opening and closing functions installed on the side wall of the housing 40. Its structural form can be selected according to actual needs, such as a hinged swing door, a sliding door driven by a slide rail, or a roller shutter structure. This application embodiment does not make any special limitation in this regard. The cooperation relationship between the maintenance door and the housing 40 is reflected in the maintenance door being embedded or overlapping in the door opening reserved in the housing 40, and the opening and closing movement relative to the housing 40 is realized through hinges, slide rails, and other connecting parts. When the maintenance door is in the closed state, it and other parts of the housing 40 together form a complete closed space, maintaining the protection level of the equipment; when the maintenance door is in the open state, the working area inside the housing 40 is exposed. This working area corresponds to the installation position of the roller bracket 20, the fifth roller 205, or the cable path of the cable reeling system 30. The maintenance door can also be equipped with accessories such as door locks, handles, or safety interlock switches to ensure that it remains tightly closed in the non-maintenance state and cuts off the relevant power source to ensure safety when opened.

[0035] Please refer to the following: Figure 5 as well as Figure 6 This is a structural diagram of the present invention with the fifth roller 205 removed in an embodiment of the present invention. In this state, the present invention is in a single-station mode.

[0036] This utility model allows for the disassembly and assembly of the fifth roller 205 according to actual needs. For example, when the fifth roller 205 is removed, this utility model is a single-station large-span cutting mode, which can meet the processing needs of cutting large-sized stone materials.

[0037] When processing small-sized stone 50 or hard and brittle materials, the original large cutting space can be divided into two independent short-span processing stations by installing the fifth roller 205, so that the fifth roller 205 can achieve synchronous cutting in both stations.

[0038] The core innovation of this invention lies in its five-roller collaborative layout, which divides the traditional single-station cutting space into two independent short-span processing stations, enabling simultaneous dual-station cutting. Specifically designed for processing small-sized stone (50mm diameter) or hard / brittle materials, this structure significantly shortens the cutting line span, effectively suppresses wire bow deformation, and significantly improves wire tension uniformity and operational stability. This allows for parallel processing at both stations, doubling the cutting efficiency compared to traditional single-station equipment. Simultaneously, it drastically reduces wire breakage and diamond wire consumption, ensuring processing accuracy and surface smoothness. This mechanism also boasts high flexibility and adaptability. When processing large-sized stones, the intermediate roller can be quickly removed, seamlessly switching to a single-station, large-span cutting mode to meet the processing needs of large workpieces. It truly achieves multi-purpose functionality, balancing efficient dual-station processing for small materials and compatible single-station production for large materials, comprehensively adapting to the diverse specifications and working conditions required by the stone processing industry.

[0039] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A switchable dual-station multi-wire cutting machine, comprising a base (10), a roller support (20) disposed above the base (10), multiple rollers mounted on the roller support (20), a lifting worktable (11) disposed inside the base (10), a wire take-up and untake-up system (30) disposed behind the base (10), and a power unit (22) providing power to the rollers; characterized in that: There are five rollers in total, including a first roller (201), a second roller (202), a third roller (203), a fourth roller (204), and a fifth roller (205). The axes of the first roller (201) and the second roller (202) are located on the same horizontal plane, the axes of the third roller (203) and the fourth roller (204) are located on the same horizontal plane, a reserved space is provided between the third roller (203) and the fourth roller (204) for the detachable installation of the fifth roller (205), and the axis of the fifth roller (205) is located below the horizontal plane formed by the axes of the third roller (203) and the fourth roller (204). The roller bracket (20) is configured to support and fix the five rollers in a repeatable and precise manner. When the fifth roller (205) is in the installation state, the diamond wire mesh is divided into a left wire mesh segment and a right wire mesh segment after being guided by the fifth roller (205), thereby forming two independent short-span cutting stations on the left and right.

2. The switchable dual-station multi-wire cutting machine according to claim 1, characterized in that: Each of the first roller (201), the second roller (202), the third roller (203), the fourth roller (204), and the fifth roller (205) is connected to an independent power unit (22) at one end; the lifting worktable (11) is used to drive the stone (50) to feed upward in the vertical direction to cut it by contact wire mesh; the wire take-up and release system (30) includes two sets of wire take-up and release mechanisms arranged symmetrically on the left and right, which are used to synchronously take up and release the diamond wire mesh and maintain its tension balance.

3. The switchable dual-station multi-wire cutting machine according to claim 1, characterized in that: The projection of the axis of the fifth roller (205) onto the horizontal plane formed by the axes of the third roller (203) and the fourth roller (204) falls on the line connecting the axes of the third roller (203) and the fourth roller (204).

4. A switchable dual-station multi-wire cutting machine according to claim 1, characterized in that: The fifth roller (205) is detachably installed in the reserved space between the third roller (203) and the fourth roller (204) by means of a combination structure of a positioning pin and a locking bolt, wherein the positioning pin is used for radial precise positioning and the locking bolt is used for axial clamping and fixing.

5. A switchable dual-station multi-wire cutting machine according to claim 1, characterized in that: The roller bracket (20) is provided with a cooling spray system (21) at the top, which includes multiple spray branches spaced apart on the same horizontal plane; the nozzles of the spray branches all face downward.

6. A switchable dual-station multi-wire cutting machine according to claim 1, characterized in that: The take-up and release system (30), the power unit (22), and the lifting work platform (11) are electrically connected to a main control unit.

7. A switchable dual-station multi-wire cutting machine according to claim 1, characterized in that: The fifth roller (205) has several guide grooves that extend circumferentially and are spaced apart. The guide grooves have a V-shaped cross-section, a depth of 0.3–0.5 mm, and a width of 1.2–1.8 mm.

8. A switchable dual-station multi-wire cutting machine according to claim 1, characterized in that: The roller bracket (20), the base (10) and the take-up and take-down system (30) are provided with a housing (40) on the outside, and the housing (40) is provided with an openable maintenance door on at least three sides.

9. A switchable dual-station multi-wire cutting machine according to claim 1, characterized in that: The take-up and release system (30) includes two symmetrically arranged take-up and release devices, which are located directly behind the left and right sides of the base (10), and each take-up and release device includes at least three sets of guide wheels.

10. A switchable dual-station multi-wire cutting machine according to claim 9, characterized in that: The power unit (22) includes a closed-loop tension feedback module. The signal input end of the module is connected to a tension sensor. The tension sensor is located on the guide wheel of the take-up and release system (30) to detect the tension value of the wire mesh segment it carries in real time and feed the signal back to the main control unit to adjust the output torque of the corresponding power unit (22).

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