A device to prevent breakage of the cable laying line of a large traction machine

Abstract

This invention discloses a device to prevent the copper rod from breaking during the casting process of a large-scale drawing machine. The device includes a support, an upper wire plate, a lower wire plate, a limit switch, and an elastic element. The upper wire plate is mounted on the support and has an upper wire-passing section with an upper wire-passing hole. The lower wire plate is hinged to the support at its center and has a lower wire-passing section with a lower wire-passing hole. The upper wire-passing section is located directly above the lower wire-passing section. The elastic element is disposed between the support and the lower wire plate and provides elastic force to the lower wire-passing section away from the upper wire-passing section. The limit switch is mounted on the support and positioned on the path of the lower wire-passing section near the upper wire-passing section. The limit switch is used to control the large-scale drawing machine to stop. The copper rod passes sequentially through the lower wire-passing hole and the upper wire-passing hole. This invention prevents the copper rod from breaking due to continuous excessive tension, effectively preventing equipment damage and safety hazards caused by breakage.

Description

Technical Field

[0001] This invention relates to the field of large-scale drawing machines, and in particular to a device for preventing breakage during the laying of lines on large-scale drawing machines. Background Technology

[0002] When producing copper wire of the required specifications, 8mm copper rods enter the large drawing machine via a wire feeding frame. The copper wire is compressed after passing through a die by a drum, resulting in the required wire size. However, due to the quality of the 8mm copper rods during the wire feeding process and displacement caused by braking and bumps during transport, the copper rods may become compressed or tangled during the feeding process. This can lead to wire breakage during the large drawing process and even safety hazards. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the present invention provides a large-scale wire laying anti-breakage device, which has the advantages of preventing the copper rod from being broken due to continuous excessive tension, and effectively preventing equipment damage and safety hazards caused by breakage.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A large-diameter wire-laying anti-breakage device includes a bracket, an upper wire plate, a lower wire plate, a limit switch, and an elastic element. The upper wire plate is on the bracket and has an upper wire-passing portion. The upper wire-passing portion has an upper wire-passing hole. The middle part of the lower wire plate is hinged to the bracket and has a lower wire-passing portion. The lower wire-passing portion has a lower wire-passing hole. The upper wire-passing portion is located directly above the lower wire-passing portion. The elastic element is disposed between the bracket and the lower wire plate and provides elastic force to the lower wire-passing portion away from the upper wire-passing portion. The limit switch is disposed on the bracket and on the path of the lower wire-passing portion near the upper wire-passing portion. The limit switch is used to control the large-diameter wire-laying machine to stop. A copper rod passes through the lower wire-passing hole and the upper wire-passing hole in sequence.

[0005] By adopting the above technical solution, when abnormal situations such as wire pressing or tangling occur during the copper rod's wire feeding process, the copper rod will exert an upward pulling force on the lower wire-passing section of the lower wire plate. Since the lower wire plate is hinged to the support in the middle, under this pulling force, the lower wire-passing section will overcome the elastic force of the elastic element and rotate towards the upper wire-passing section. As the lower wire-passing section rotates, the distance between it and the limit switch gradually decreases. When the abnormal pulling force of the copper rod reaches a certain level, causing the lower wire-passing section to rotate to touch the limit switch, the limit switch will immediately send a signal to stop the large wire feeding machine, thereby preventing the copper rod from breaking due to continuous excessive pulling force and effectively preventing equipment damage and safety hazards caused by breakage. The elastic element provides stable support to the lower wire plate during normal wire feeding, ensuring a proper relative position between the lower and upper wire-passing sections, allowing the copper rod to pass smoothly through the upper and lower wire-passing holes without affecting the normal production process.

[0006] Optionally, the elasticity of the elastic element can be adjusted.

[0007] By adopting the above technical solution, the elastic force of the elastic element can be flexibly adjusted according to the wire feeding requirements of copper rods of different specifications and the different requirements for tensile force thresholds in actual production. When it is necessary to accommodate thicker copper rods or require a higher tensile force threshold, the elastic force of the elastic element can be increased, so that the lower wire threading part needs a greater tensile force to trigger the limit switch; while for thinner copper rods or cases requiring a lower tensile force threshold, the elastic force of the elastic element can be reduced, ensuring that the machine can be stopped in time when the copper rod experiences slight abnormal tensile force, thereby improving the versatility and adaptability of the device and meeting diverse production scenarios.

[0008] Optionally, the bracket has a spring adjustment plate; the spring adjustment plate is provided with an adjustment part; one end of the elastic element is disposed on the adjustment part and the other end is disposed on the lower line plate; the adjustment part changes the elastic force of the elastic element by adjusting the vertical position of the end of the elastic element connected to it.

[0009] By adopting the above technical solution, when it is necessary to adjust the elasticity of the elastic element, it is only necessary to use the adjusting part to adjust the vertical position of the elastic element and its connected end. For example, adjusting one end of the elastic element upwards will change the initial compression or tension of the elastic element, thereby increasing the elastic force it provides; adjusting one end of the elastic element downwards will reduce the initial deformation of the elastic element, thereby reducing the elastic force. This structural design makes the elastic adjustment process intuitive and convenient to operate, without the need to replace or make complex adjustments to the elastic element itself. It can be achieved simply by changing the position of the adjusting part, which greatly improves the efficiency and convenience of elastic adjustment and further enhances the adaptability of the device under different production conditions.

[0010] Optionally, the adjustment unit includes a vertical moving member connected to one end of the elastic member and an adjustment drive member for driving the vertical moving member to move vertically.

[0011] By adopting the above technical solution, when it is necessary to adjust the elastic force of the elastic element, the operator can manipulate the adjustment drive to move the vertical moving part vertically. For example, if the adjustment drive is a knob-type structure, rotating the knob can cause the vertical moving part to rise or fall along the guide structure on the spring adjustment plate, thereby changing the position of one end of the elastic element and achieving precise adjustment of the elastic force. This design transforms the operation of elastic adjustment into a simple drive of the adjustment drive, making the adjustment process more precise and controllable. It can quickly and stably adjust the elastic force of the elastic element to the required value, meeting the precise setting requirements of the trigger tension threshold under different production conditions, and further optimizing the ease of use and adjustment accuracy of the device.

[0012] Optionally, the bracket is provided with a limit switch mounting seat; the limit switch is mounted on the limit switch mounting seat; the position of the limit switch mounting seat is adjustable along the path of the lower thread portion close to the upper thread portion.

[0013] By adopting the above technical solution, the position of the limit switch holder on the support can be flexibly adjusted according to different factors such as the material, diameter, and wire feeding speed of the copper rod in actual production. For example, when using a more fragile or tensile-sensitive copper rod, the limit switch holder can be adjusted towards the initial position of the wire feeding section, so that the wire feeding section only needs a small rotation to touch the limit switch, thereby triggering the stop signal in advance and preventing the copper rod from being subjected to excessive tension. For copper rods with higher strength, the limit switch holder can be moved away from the initial position of the wire feeding section, allowing for a larger rotation margin in the wire feeding section, ensuring that the machine will not be accidentally triggered to stop due to slight fluctuations in tension during normal production. This adjustable position design allows the trigger threshold of the limit switch to match the characteristics of different copper rods and production process parameters, further improving the accuracy and flexibility of the device in judging abnormal situations, effectively reducing the occurrence of accidental and missed stops, and ensuring the stability and continuity of production.

[0014] Optionally, ceramic rings are provided inside the upper and lower wire-passing holes.

[0015] By adopting the above technical solution, the ceramic ring possesses excellent wear resistance and a smooth surface. When the copper rod passes through the upper and lower threading holes during the wire feeding process, the copper rod contacts the ceramic ring. Compared to traditional metal hole walls, the ceramic ring significantly reduces the coefficient of friction on the copper rod surface, minimizing wear during threading and preventing defects such as scratches and burrs, thus ensuring the surface quality of the copper rod. Simultaneously, the ceramic material is high-temperature resistant and corrosion-resistant, maintaining stable performance over long-term use. It is not easily damaged by friction from the copper rod or environmental factors, extending the service life of the threading holes and reducing the maintenance costs of the device. Furthermore, the smooth inner wall of the ceramic ring also guides and regulates the copper rod's path, reducing wobbling within the threading holes and ensuring stable and smooth passage, further guaranteeing the stability of the wire feeding process.

[0016] Optionally, the underwire portion includes a pair of underwire seats, and underwire grooves are formed on the end faces of the pair of underwire seats that are close to each other; when the pair of underwire seats abut against each other, the pair of underwire grooves form the underwire hole; an opening and closing drive mechanism is provided in the underwire plate; the opening and closing drive mechanism is used to drive the pair of underwire seats to move away from or closer to each other; the limit switch is used to control the opening and closing drive mechanism.

[0017] By adopting the above technical solution, when the copper rod is being laid out normally, a pair of under-threading seats abut against each other under the action of the opening and closing drive mechanism. At this time, the two under-threading slots combine to form a complete under-threading hole, allowing the copper rod to pass through smoothly. However, when abnormal situations such as wire pressing or tangling occur on the copper rod, causing increased tension and the under-threading section to rotate upwards and touch the limit switch, the limit switch immediately sends a signal to the opening and closing drive mechanism, driving the pair of under-threading seats to move away from each other. In this way, the originally closed under-threading hole is opened, and the copper rod is no longer constrained by the under-threading seats, thereby quickly releasing the abnormal tension borne by the copper rod and preventing the copper rod from breaking due to continuous stress during the shutdown process. After the abnormal situation is eliminated, the limit switch can again control the opening and closing drive mechanism to drive the pair of under-threading seats to move closer and abut against each other, re-forming the under-threading hole and restoring the normal laying state. This structural design achieves dual protection for the copper rod by actively opening the under-threading hole while the limit switch controls the shutdown, further reducing the risk of copper rod breakage and improving the safety and reliability of the device.

[0018] Optionally, the pair of said underwire seats move away from or near each other along a straight path.

[0019] By adopting the above technical solution, the movement trajectory of a pair of under-threading seats is linear, resulting in a relatively simple structural design that facilitates processing and assembly. Typically, linear guides or guide grooves are installed on the under-threading plate, along with components such as sliders, to achieve the linear movement of the under-threading seats. This linear movement ensures uniform force and smooth movement of the under-threading seats as they approach or move away, minimizing the risk of jamming or misalignment. This ensures accurate alignment of the under-threading slots to form the under-threading holes and complete separation upon opening, effectively releasing the copper rod. Furthermore, the linear movement offers a fast response speed, quickly completing the opening and closing of the under-threading seats after the limit switch is triggered, promptly protecting the copper rod. This makes it suitable for production scenarios requiring high response speeds.

[0020] Optionally, the pair of said underwire seats move away from or towards each other along an arc path.

[0021] By adopting the above technical solution, a pair of underwire holders move along an arc trajectory centered on a specific circle. This movement method allows for smoother relative movement between the edges of the underwire holders and the copper rod during opening and closing, reducing localized friction and compression between the copper rod and the underwire holders. For example, as the underwire holders move away from each other along the arc path, their opening direction changes gradually, avoiding the sudden, hard separation from the copper rod that might occur during linear movement, further protecting the surface of the copper rod from damage. Simultaneously, the arc motion structure design can be implemented through gear meshing, linkage mechanisms, etc., allowing for flexible design based on actual spatial layout and transmission requirements, providing better adaptability in scenarios with limited installation space or special requirements for the motion trajectory.

[0022] Optionally, the upper threading section is provided with an elastic buffer section; the elastic buffer section includes an elastic buffer member that is vertically and elastically movable; the elastic buffer member has a middle threading hole; the copper rod passes through the lower threading hole, the middle threading hole and the upper threading hole in sequence.

[0023] By adopting the above technical solution, when the copper rod experiences an upward impact force due to unexpected circumstances during the wire laying process, the elastic buffer can move elastically in the vertical direction, thereby buffering and absorbing the impact force. Specifically, when abnormal situations such as wire pressing or tangling occur during the wire laying process, the pair of lower wire guides will first separate from each other. This prevents the copper rod from breaking due to continuous stress during the shutdown process. However, the copper rod will still have upward inertia, which will drive the elastic buffer to move upward. At this time, the elastic buffer will compress or stretch its connected elastic structure (such as a spring), converting the impact energy into elastic potential energy, preventing the tension from being directly transmitted to the upper wire guide and the upper wire plate, effectively reducing the instantaneous stress peak borne by the copper rod. The setting of the middle wire guide hole ensures that the copper rod can maintain a stable wire routing direction during the elastic buffering process, without deviation or jamming. This elastic buffer design allows the device to further reduce the risk of the copper rod breaking when faced with sudden impact forces, through the buffering effect of the elastic buffer. It also reduces the damage to the device's structure caused by the impact, extends the device's service life, and improves the overall operational stability. Attached Figure Description

[0024] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0025] Figure 2 This is a cross-sectional structural diagram of Embodiment 1 of the present invention.

[0026] Figure 3 This is a partial cross-sectional structural diagram of Embodiment 2 of the present invention.

[0027] Figure 4 This is a partial structural schematic diagram of Embodiment 3 of the present invention.

[0028] Figure 5 This is a top view of the structure of Embodiment 4 of the present invention.

[0029] Figure 6 This is a top view of the structure of Embodiment 5 of the present invention.

[0030] Figure 7 This is a cross-sectional structural schematic diagram of the elastic buffer section according to Embodiment Six of the present invention.

[0031] Explanation of reference numerals in the attached figures: 10. Bracket; 11. Upper support plate; 12. Spring adjusting plate; 13. Lower support plate; 131. Guide arc tube; 14. Limiting frame; 141. Upper limiting frame; 142. Lower limiting frame; 20. Upper wire plate; 200. Upper wire hole; 21. Upper ceramic ring; 30. Lower wire plate; 300. Lower wire hole; 31. Lower ceramic ring; 32. Hinge center shaft; 33. Spring fixing rod; 34. Lower wire plate body; 341. Rotating connecting column; 35. Lower wire seat; 350. Lower wire groove; 3500. Drive sliding groove; 351. Side connecting plate; 352. Side guide rod; 353. Side guide ring; 354. Rotating connecting plate; 36. Opening / closing drive cylinder; 37. Drive ring; 371. Drive column; 40. Limit switch; 41. Limit switch mounting base; 411. Limit switch mounting plate; 412. Limit switch adjusting bracket; 42. Limit bolt; 50. Elastic components; 60. Adjustment unit; 61. Vertical moving part; 62. Adjustment drive part; 70. Elastic buffer section; 71. Support component; 711. Vertical support rod; 712. Limiting plate; 713. Horizontal support plate; 714. Force-applying component; 7141. Compression spring; 7142. Force-applying plate; 72. Buffer contact component; 720. Central wire hole; 721. Buffer contact center block; 722. Horizontal connecting plate; 723. Vertical guide rod; 724. Stop plate. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1-7 The present invention will be described in further detail below.

[0033] Example 1: A device for preventing breakage during the laying of a large traction machine is disclosed, with reference to... Figure 1 and Figure 2The system includes a bracket 10, an upper wire plate 20, a lower wire plate 30, a limit switch 40, and an elastic element 50. The bracket 10 includes a pair of upper support plates 11 on the upper side, a spring adjusting plate 12 welded and fixed between the lower ends of the pair of upper support plates 11, and a pair of lower support plates 13 welded and fixed to the lower end faces of the spring adjusting plate 12. The upper support plates 11 and the lower support plates 13 are parallel to each other. One end of the upper wire plate 20 is welded and fixed between the pair of upper support plates 11, and the other end is set as an upper wire threading part. An upper wire threading hole 200 is formed on the upper wire threading part. A hinge center shaft 32 is formed in the middle of the two vertical end faces of the lower wire plate 30. The lower wire plate 30 is located between the pair of lower support plates 13. The hinge center shaft 32 and the lower wire plate 30 are connected to the upper wire plate 20. The lower support plates 13 are rotatably connected to the corresponding lower support plates 13 on the respective sides; the end of the lower wire plate 30 near the upper wire threading part is set as the lower wire threading part, and the end away from the upper wire threading part is set as the connecting part; the lower wire threading part is formed with a lower wire threading hole 300; one end of the elastic element 50 is connected to the spring adjusting plate 12, and the other end is connected to the connecting part and provides elastic force for the lower wire threading part away from the upper wire threading part; a limit switch mounting base 41 is welded and fixed between a pair of lower support plates 13; the limit switch 40 is fixed on the lower end surface of the limit switch mounting base 41 and is higher than the lower wire plate 30; the limit switch 40 is set on the path of the lower wire threading part near the upper wire threading part; the limit switch 40 is used to control the large pulling machine to stop. Among them, the elastic element 50 is a tension spring, and the end of the spring adjusting plate 12 away from the upper support plate 11 is formed with a spring connecting hole for connecting one end of the tension spring. The connecting part of the lower line plate 30 is fixed with a spring fixing rod 33 for hanging the other end of the tension spring. In order to make the tension of the tension spring more uniform, at least two tension springs are provided.

[0034] To increase the strength of the lower wire plate 30 and the upper wire plate 20, the two ends of the lower wire plate 30 and the upper wire plate 20 are bent upwards respectively along the hinge center axis 32.

[0035] During operation, after the copper rod is released from the wire feeding frame, it passes through the lower wire feeding hole 300 and the upper wire feeding hole 200 from top to bottom, and is then guided to the rear workstation by the guide wheel. When the copper rod is pressed or tangled during the wire feeding process, the pressed and tangled parts cannot pass through the lower wire feeding hole 300 of the lower wire plate 30, thereby causing the lower wire feeding part of the lower wire plate 30 to swing upward. During this process, the lower wire plate 30 will trigger the limit switch 40 on the movement path. The limit switch 40 controls the large pulling machine to stop, thereby preventing the copper rod from being broken due to continuous excessive tension, effectively preventing equipment damage and safety hazards caused by breakage.

[0036] In other embodiments, to prevent the upper wire hole 200 and the lower wire hole 300 from scratching the copper rod, an upper ceramic ring 21 is coaxially fixed inside the upper wire hole 200, and a lower ceramic ring 31 is coaxially fixed inside the lower wire hole 300.

[0037] To facilitate excessive swinging of the lower support plate 30, the lower support plate 13 is designed in an L-shape. The horizontal part of the lower support plate 13 is away from the lower wire threading part. A limit frame 14 is welded and fixed to one end of the lower support plate 13 away from the lower wire threading part. The connecting part of the lower support plate 30 passes through the limit frame 14. The limit frame 14 includes an upper limit bracket 141 located on the upper side of the connecting part of the lower support plate 30 and a lower limit bracket 142 located on the lower side of the connecting part of the lower support plate 30. The upper limit bracket 141 prevents the connecting part of the lower support plate 30 from swinging upward due to the elastic force of the elastic element 50, thus ensuring the positional stability of the lower support plate 30 during normal operation due to the movement of the copper rod. The lower limit bracket 142 prevents the lower wire threading part of the lower support plate 30 from swinging upward, thus preventing the wire threading part from hitting the limit switch 40 and damaging the limit switch 40.

[0038] Example 2: The difference between Example 2 and Example 1 is as follows: (Refer to...) Figure 3 The upper end of the tension spring is not fixed in the spring connection hole of the spring adjusting plate 12, but is connected through the adjusting part 60 provided on the spring adjusting plate 12. The adjusting part 60 includes an L-shaped vertical moving member 61 and an adjusting drive member 62 for driving the vertical moving member 61 to move vertically. The vertical part of the vertical moving member 61 passes vertically through the spring adjusting plate 12, and the adjusting drive member 62 can be a bolt, which passes vertically through and is screwed onto the spring adjusting plate 12. The lower end of the bolt is rotatably connected to the horizontal part of the vertical moving member 61. In other embodiments, the adjusting drive member 62 can be a linear drive member such as an electric cylinder. The above solution meets the requirements for precise setting of the trigger tension threshold under different production conditions.

[0039] Example 3: To meet the precise setting requirements of the trigger tension threshold under different production conditions, in addition to the technical solution of Example 2, a technical solution can also be adopted that sets the limit switch 40 to an adjustable position. (Reference) Figure 4 The difference between Embodiment 3 and Embodiment 1 is that the position of the limit switch mounting base 41 is not fixed but adjustable. The limit switch mounting base 41 includes a limit switch mounting plate 411 for fixing the limit switch 40 and a pair of limit switch adjusting brackets 412 fixed at both ends of the limit switch mounting plate 411. The limit switch adjusting bracket 412 includes an extension fixed to the limit switch mounting plate 411 and an arc-shaped arc connecting portion fixed to the other end of the extension. The arc connecting portions of the pair of limit switch adjusting brackets 412 are located on a pair of lower supports. On the outer side of the support plate 13, a guide arc tube 131 is formed on the far-away end face of a pair of lower support plates 13 for the arc-shaped movement of the arc-shaped connecting part of the limit switch adjustment frame 412. The guide arc tube 131, the arc-shaped connecting part of the limit switch adjustment frame 412 and the hinge center shaft 32 are coaxially arranged. In order to limit the relative position of the guide arc tube 131 and the arc-shaped connecting part of the limit switch adjustment frame 412, a limit bolt 42 is screwed on the guide arc tube 131. The inner end of the limit bolt 42 abuts against the arc-shaped connecting part of the limit switch adjustment frame 412.

[0040] When the position of the limit switch 40 needs to be adjusted, the arc connecting part of the limit switch adjustment bracket 412 can move freely in an arc within the guide arc tube 131 by loosening a pair of limit bolts 42. After it moves into place, the pair of limit bolts 42 can be tightened again. In this way, the trigger tension threshold can be changed by adjusting the distance between the limit switch 40 and the lower wire part of the lower wire plate 30.

[0041] Example 4: The difference between Example 4 and Example 1 is as follows: (Refer to...) Figure 5 When the limit switch 40 is triggered, the pulling force of the large puller on the copper rod will not disappear immediately. Therefore, the copper rod will still have an inertial force on the lower wire threading part of the lower wire plate 30, and the copper rod is still likely to be pulled off.

[0042] To address the aforementioned issues, the lower thread section differs from that in Embodiment 1, referring to... Figure 5 The lower wire plate 30 includes a lower wire plate body 34 and a lower wire threading section; wherein, the lower wire threading section includes a pair of lower wire threading seats 35 and lower wire threading grooves 350 are respectively formed on the end faces of the pair of lower wire threading seats 35 that are close to each other; the pair of lower wire threading seats 35 are slidably connected to the lower end face of the lower wire plate body 34 through a linear guide rail; when the pair of lower wire threading seats 35 abut against each other, the pair of lower wire threading grooves form a lower wire threading hole 300; the lower wire plate 30 is provided with an opening and closing drive mechanism; the opening and closing drive mechanism is used to drive the pair of lower wire threading seats 35 to move away from or close to each other; the limit switch 40 is used to control the opening and closing drive mechanism.

[0043] refer to Figure 5 The opening and closing drive mechanism includes an opening and closing drive cylinder 36 fixed to the lower end face of the lower wire plate body 34 and a fan-shaped drive ring 37 fixed to the piston rod of the opening and closing drive cylinder 36; the extension and retraction direction of the opening and closing drive cylinder 36 is perpendicular to the moving away and approaching direction of a pair of lower wire guide seats 35; the inner diameter of the drive ring 37 is larger than the diameter of the lower wire guide hole 300; a pair of vertically arranged drive columns 371 are fixed on the upper end face of the drive ring 37; a straight drive sliding groove 3500 is formed on the lower end face of the lower wire guide seat 35; the drive column 371 and the drive... The sliding grooves 3500 correspond one-to-one and the drive column 371 is slidably disposed in the drive sliding groove 3500; the pair of drive sliding grooves 3500 gradually approach each other along the retraction direction of the opening and closing drive electric cylinder 36; when the pair of drive columns 371 are located at the ends of the pair of drive sliding grooves 3500 that are far apart from each other, the pair of underwire seats 35 are in contact with each other and the axial line connecting the pair of drive columns 371 passes through the central axis of the underwire hole 300; when the pair of drive columns 371 are located at the ends of the pair of drive sliding grooves 3500 that are close to each other, the pair of underwire seats 35 are farthest apart.

[0044] To further ensure the stability of the movement of the pair of underwire seats 35, a side connecting plate 351 and a side guide ring 353 are respectively fixed to the ends of the pair of underwire seats 35 away from the main body of the lower wire plate 34; a side guide rod 352 is fixed on the side connecting plate 351; the side guide rod 352 passes through the side guide ring 353 coaxially; the axial direction of the side guide rod 352 is parallel to the approach and away direction of the pair of underwire seats 35.

[0045] During operation, when the limit switch 40 is triggered, it controls the large pulling machine to stop and also controls the opening and closing drive cylinder 36 to retract, thereby causing the pair of lower wire guides 35 to move away from each other, thus avoiding the parts of the copper rod pressing on the wire and the tangled wire, and reducing the force applied to the copper rod.

[0046] Example 5: The difference between Example 5 and Example 4 is as follows: (Refer to...) Figure 6 The pair of under-thread connectors 35 do not move away from or towards each other along a straight path, but rather along an arc path. This arc-shaped approach allows for smoother relative movement between the edges of the under-thread connectors 35 and the copper rod during opening and closing, reducing localized friction and compression between the copper rod and the under-thread connectors 35. (Reference) Figure 6 The pair of underwire holders 35 do not use linear guide rails and the lower wire plate body 34, nor do they have guide components such as side connecting plates 351, side guide rods 352 and side guide rings 353; the ends of the pair of underwire holders 35 near the lower wire plate body 34 that are far apart from each other are respectively formed with rotating connecting plates 354, and rotating connecting columns 341 are fixed on the lower end surface of the lower wire plate body 34. The rotating connecting plates 354 and rotating connecting columns 341 correspond one-to-one and the rotating connecting plates 354 are rotatably connected to the rotating connecting columns 341.

[0047] Example 6: The difference between Example 6 and Example 4 is as follows: (Refer to...) Figure 7 An elastic buffer 70 is provided on the upper wire threading section. When a pair of lower wire threading seats 35 move away from each other to avoid pressing and tangling the wires, the elastic buffer 70 can absorb the impact force of the copper rod on the upper wire threading section.

[0048] refer to Figure 7The elastic buffer 70 includes a pair of support members 71 and a buffer contact member 72. Each support member 71 includes a pair of vertical support rods 711, a horizontal support plate 713 fixed to the pair of vertical support rods 711, a force-applying member 714, and a pair of limiting plates 712. The limiting plates 712 correspond one-to-one with the vertical support rods 711 and are fixed to the upper ends of the vertical support rods 711. Each force-applying member 714 includes a force-applying plate 7142 vertically sleeved on the pair of vertical support rods 711 and a pair of compression springs 7141. The force-applying plate 7142 is located above the horizontal support plate 713. Each compression spring 7141 corresponds one-to-one with the vertical support rods 711 and is sleeved on the corresponding side of the vertical support rod 711. The upper end of the compression spring 7141 abuts against the limiting plate 712, and the lower end abuts against the force-applying plate 712. 42; The buffer contact 72 includes a buffer contact center block 721 and a pair of buffer connecting parts fixed on the buffer contact center block 721; the buffer contact center block 721 is formed with a central wire-passing hole 720; the buffer connecting part includes a horizontal connecting plate 722 connected to the buffer contact center block 721, a vertical guide rod 723 vertically fixed on the horizontal connecting plate 722, and a stop plate 724 fixed to the upper end of the vertical guide rod 723; the vertical guide rod 723 passes through the upper wire-passing part and the horizontal support plate 713 from top to bottom; the stop plate 724 is located between the horizontal support plate 713 and the force-applying plate 7142; the horizontal cross-sectional dimension of the stop plate 724 is larger than the horizontal cross-sectional dimension of the vertical guide rod 723, so that the buffer contact 72 will not detach from the pair of support members 71. During normal operation, the copper rod passes through the lower wire-passing hole 300, the central wire-passing hole 720 and the upper wire-passing hole 200 from top to bottom.

[0049] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A device for preventing breakage during the laying of a large traction machine, characterized in that: The system includes a bracket (10), an upper wire plate (20), a lower wire plate (30), a limit switch (40), and an elastic element (50); the upper wire plate (20) is mounted on the bracket (10) and has an upper wire threading portion; the upper wire threading portion is provided with an upper wire threading hole (200); the lower wire plate (30) is hinged to the bracket (10) at its middle part and has a lower wire threading portion; the lower wire threading portion is provided with a lower wire threading hole (300); the upper wire threading portion is located directly above the lower wire threading portion; An elastic element (50) is disposed between the bracket (10) and the lower wire plate (30) and provides elasticity to the lower wire threading portion away from the upper wire threading portion; a limit switch (40) is disposed on the bracket (10) and disposed on the path of the lower wire threading portion near the upper wire threading portion; the limit switch (40) is used to control the large drawing machine to stop; the copper rod passes through the lower wire threading hole (300) and the upper wire threading hole (200) in sequence; the elasticity of the elastic element (50) is adjustable; The bracket (10) has a spring adjusting plate (12); the spring adjusting plate (12) is provided with an adjusting part (60); one end of the elastic element (50) is provided on the adjusting part (60) and the other end is provided on the lower line plate (30); the adjusting part (60) changes the elastic force of the elastic element (50) by adjusting the vertical position of the end of the elastic element (50) connected to it; The bracket (10) is provided with a limit switch mounting seat (41); the limit switch (40) is mounted on the limit switch mounting seat (41); the position of the limit switch mounting seat (41) is adjustable along the path of the lower threaded part close to the upper threaded part; The underwire portion includes a pair of underwire seats (35), and underwire grooves (350) are formed on the end faces of the pair of underwire seats (35) that are close to each other; when the pair of underwire seats (35) abut against each other, the pair of underwire grooves (350) form the underwire hole (300); an opening and closing drive mechanism is provided on the underwire plate (30); the opening and closing drive mechanism is used to drive the pair of underwire seats (35) to move away from or closer to each other; the limit switch (40) is used to control the opening and closing drive mechanism. An elastic buffer section (70) is provided on the upper wire threading section; the elastic buffer section (70) includes an elastic buffer member (72) that is vertically elastically movable; the elastic buffer member (72) has a middle wire threading hole (720); the copper rod passes through the lower wire threading hole (300), the middle wire threading hole (720) and the upper wire threading hole (200) in sequence.

2. The anti-breakage device for the large-scale traction machine's cable laying process according to claim 1, characterized in that: The adjustment unit includes a vertical moving member (61) connected to one end of the elastic member (50) and an adjustment drive member (62) for driving the vertical moving member (61) to move vertically.

3. The anti-breakage device for the large-scale traction machine's cable laying process according to claim 1, characterized in that: A ceramic ring is provided inside both the upper wire hole (200) and the lower wire hole (300).

4. The anti-breakage device for the large-scale traction machine's cable laying process according to claim 1, characterized in that: The pair of underwire seats (35) move away from or near each other along a straight path.

5. The anti-breakage device for the large-scale traction machine's cable laying process according to claim 1, characterized in that: The pair of underwire seats (35) move away from or near each other along an arc path.

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