Cable irradiation equipment for rail transit vehicles

Abstract

The present invention discloses a cable irradiation device for rail transit vehicles. The device comprises a frame, a rotating pay-off and retractable cable system, a rotating under-beam system, an electron accelerator, and a rotating drive mechanism. The rotating pay-off and retractable cable system and the rotating under-beam system are rotatably mounted on the frame and driven to rotate by the rotating drive mechanism. The electron accelerator is disposed above the rotating under-beam system. The cable is paid out by the rotating pay-off and retractable cable system, enters the rotating under-beam system, and is then reeled in by the rotating pay-off and retractable cable system. The present invention, through the structure of the rotating pay-off and retractable cable system and the rotating under-beam system, achieves 360-degree rotation of the cable pay-off and retractable cable and the under-beam cable, thereby ensuring that the radiation dose received by each side of the cable under the electron accelerator beam is equal, and the cable irradiation is uniform.

Description

Technical Field

[0001] The present invention relates to a cable irradiation device, in particular to a cable irradiation device for rail transit vehicles, and belongs to the technical field of cable production. Background Art

[0002] Irradiation is a special process in the manufacturing process for rail vehicle cables compliant with EN50382, EN50264, and EN50306. The insulation or sheathing made of cross-linked materials is irradiated during this process. Currently, the basic setup of cable irradiation equipment is as follows: the cable is unwound from a payout stand and enters the irradiation chamber. The cable surface is bombarded by an electron beam generated by a beam-down system. The cable then exits the irradiation chamber and is returned to the payout stand, completing the irradiation process. Cables with different outer diameters or cross-sections require irradiation using accelerators of varying energy levels. Cables with larger outer diameters or cross-sections are processed using higher-energy accelerators. However, when the outer diameter or cross-section of a cable is too large, the tension during irradiation cannot be well controlled. Excessive tension can cause the insulation or sheathing to retract, while insufficient tension can prevent the cable from rotating. Consequently, the cable cannot receive equal radiation doses on all four sides during irradiation, resulting in poor irradiation uniformity.

[0003] Therefore, it can be seen from the above that the cable irradiation equipment in the prior art mainly has the following defects:

[0004] 1. The accelerator energy setting is configured at the maximum thickness, while the traditional irradiation edge requires a larger amount of irradiation. The higher the accelerator energy configuration, the higher the cost.

[0005] 2. Traditional irradiation equipment is arranged horizontally, and the radiation dose to the circular peripheral area of ​​the cable is uneven, which can easily cause axial anisotropy of the cable insulation, and in severe cases, lead to cable breakdown and other unqualified abnormalities. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a cable irradiation device for rail transit vehicles, which ensures that the irradiation of the cable in the circumferential direction is uniform.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A cable irradiation device for rail transit vehicles is characterized by comprising a frame, a rotating pay-off and retractable wire system, a rotating under-beam system, an electron accelerator and a rotating drive mechanism. The rotating pay-off and retractable wire system and the rotating under-beam system are rotatably arranged on the frame and are both driven to rotate by the rotating drive mechanism. The electron accelerator is arranged above the rotating under-beam system. The cable is paid out by the rotating pay-off and retractable wire system and enters the rotating under-beam system and is then reeled up by the rotating pay-off and retractable wire system.

[0009] Furthermore, the rotating wire-reeling and wire-paying system includes a wire-reeling frame, a wire-reeling and wire-paying frame, a wire-reeling and wire-paying bracket, and a wire-reeling and wire-paying limiting guide roller group. One end of the wire-reeling and wire-paying bracket is rotatably set on the frame, and the other end of the wire-reeling and wire-paying bracket is a circular frame. A supporting wheel is respectively provided under both sides of the circular frame, and the supporting wheel is rotatably set on the supporting wheel bracket. The wire-reeling and wire-paying limiting guide roller group is set at one end of the wire-reeling and wire-paying bracket.

[0010] Furthermore, the wire take-up frame and the wire pay-off frame are arranged on the same straight line and the wire take-up frame and the wire pay-off frame are symmetrically arranged on a radial line of the circular frame. A wire take-up and wire pay-off fixing frame is arranged inside the circular frame. One end of the wire take-up frame and the wire pay-off frame is rotatably arranged on the inner wall of the circular frame, and the other end of the wire take-up frame and the wire pay-off frame is rotatably arranged on the wire take-up and wire pay-off fixing frame.

[0011] Furthermore, the rotary wire-reeling and wire-paying system further comprises a wire-arranger, which is arranged on the front side of the wire-reeling frame and the wire-paying frame, and both ends of the wire-arranger are fixed on the wire-reeling and wire-paying bracket.

[0012] Furthermore, the rotating lower beam system includes a rotating frame, an active guide wheel group, a passive guide wheel group and a lower beam limit guide roller group. Both ends of the rotating frame are rotatably set on the frame, the active guide wheel group is rotatably set at one end of the rotating frame, and the passive guide wheel group is rotatably set at the other end of the rotating frame. The lower beam limit guide roller group is located at one end of the rotating frame and outside the active guide wheel group.

[0013] Furthermore, the driving guide wheel group is composed of a plurality of driving guide wheels of the same size and a driving shaft, each of which is fixedly arranged on the driving shaft, and the passive guide wheel group is composed of a plurality of passive guide wheels of different sizes and a passive shaft, the plurality of passive guide wheels of different sizes are arranged in sequence from large to small along the axial direction of the passive shaft and each passive guide wheel is rotatably arranged on the outside of the passive shaft.

[0014] Furthermore, the rotating retractable wire system and the rotating lower beam system are connected via a coupling shaft, and through holes for the cables to pass through are provided on the ends of the rotating retractable wire system, the ends of the rotating lower beam system and the axis of the coupling shaft.

[0015] Furthermore, the rotation drive mechanism adopts a gear box, the output end of the gear box is coaxially connected to the coupling shaft and drives the coupling shaft to rotate on the frame, and the input end of the gear box is connected to the driving power source.

[0016] Furthermore, a collector brush is provided on the coupling shaft, one side of the collector brush is connected to an external power supply, and the other side of the collector brush supplies power to the internal electrical appliances of the rotating retractable wire system and the rotating beam lower system respectively.

[0017] Compared with the prior art, the present invention has the following advantages and effects:

[0018] 1. The present invention realizes 360-degree rotation of the cable pay-back and pay-back wires and the cable under the beam through the structure of the rotating pay-back and pay-back wire system and the rotating under-beam system, so that the radiation dose received by each side of the cable under the electron accelerator beam is equal, and the cable radiation uniformity is good;

[0019] 2. The present invention adopts a rotary irradiation structure. Compared with the traditional unidirectional irradiation structure, there is no need to configure the irradiation dose according to the maximum thickness of the cable, which can greatly reduce the procurement cost of the irradiation equipment. In addition, the subsequent maintenance cost of the irradiation equipment with a lower dose is also low, which reduces the operating cost of the equipment.

[0020] 3. The passive guide wheel group of the rotating beam system of the present invention adopts a guide wheel structure of different sizes, so that the cables wound in the rotating beam system are staggered with each other, avoiding mutual blocking and interference between the sides during the irradiation process, and ensuring the uniformity of the irradiation dose on all sides of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of a cable irradiation device for rail transit vehicles according to the present invention.

[0022] Figure 2 Schematic diagram of the rotary pay-off and take-up system of the present invention.

[0023] Figure 3 Schematic diagram of the rotating beam system of the present invention. DETAILED DESCRIPTION

[0024] In order to elaborate on the technical solutions adopted by the present invention to achieve the predetermined technical purpose, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments, and the technical means or technical features in the embodiments of the present invention can be replaced without creative work. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0025] like Figure 1As shown, a cable irradiation device for rail transit vehicles of the present invention comprises a frame 1, a rotating retractable wire system 2, a rotating beam-down system 3, an electron accelerator 4 and a rotating drive mechanism 5. The rotating retractable wire system 2 and the rotating beam-down system 3 are rotatably arranged on the frame 1, and the rotating retractable wire system 2 and the rotating beam-down system 3 are driven by the rotating drive mechanism 5 to rotate synchronously. The electron accelerator 4 is arranged above the rotating beam-down system 3 to generate a vertically downward electron beam to irradiate the cable on the rotating beam-down system 3. The cable 6 is paid out by the rotating retractable wire system 2 and enters the rotating beam-down system 3, and then is reeled up by the rotating retractable wire system 2. Since the rotating pay-off and retracting system 2 and the rotating beam-down system 3 rotate 360 ​​degrees synchronously on the frame 1, the pay-off and retracting of the cable will not be affected by the rotation of the cable. The cable on the rotating beam-down system 3 rotates 360 degrees below the electron accelerator 4, so that the insulation or sheath of the entire circumferential surface of the cable on the rotating beam-down system 3 is irradiated in all directions at 360 degrees, and the irradiation uniformity is greatly improved compared with the existing technology.

[0026] like Figure 2 As shown, the rotary retractable wire system 2 includes a retractable wire frame 7, a pay-off wire frame 8, a retractable wire bracket 9, and a retractable wire limiting guide roller group 10. One end of the retractable wire bracket 9 is rotatably set on the frame 1, and the other end of the retractable wire bracket 9 is a circular frame 11. The circular frame 11 is set in the vertical direction and the overall plane of the circular frame 11 is perpendicular to the axial direction of the rotary retractable wire system 2. A supporting wheel 12 is respectively set below the two sides of the circular frame 11. The supporting wheel 12 is rotatably set on the supporting wheel bracket 13. The circular frame 11 is formed with rolling support by two supporting wheels 12 symmetrically set below the two sides of the circular frame 11, so that the circular frame 11 can rotate freely between the two supporting wheels 12. The retractable wire limiting guide roller group 10 is set on the inner side of one end of the retractable wire bracket 9. The reeling and unreeling line limiting guide roller group 10 adopts a guide roller group with a crisscross structure, that is, two guide rollers are arranged vertically up and down, and two guide rollers are arranged vertically left and right. The cables of the reeling and unreeling line all pass through the middle of the crisscross shape of the reeling and unreeling line limiting guide roller group 10 to limit and guide the cables.

[0027] The wire take-up frame 7 and the wire pay-off frame 8 are arranged on the same straight line and the wire take-up frame 7 and the wire pay-off frame 8 are symmetrically arranged on a radial line of the circular frame 11. A wire take-up and wire pay-off fixing frame 14 is arranged on the inside of the circular frame 11. One end of the wire take-up frame 7 and the wire pay-off frame 8 is rotatably set on the inner wall of the circular frame 11, and the other end of the wire take-up frame 7 and the wire pay-off frame 8 is rotatably set on the wire take-up and wire pay-off fixing frame 14.

[0028] The rotary wire-reeling and reeling system 2 further includes a wire-reeling device 15, which is arranged in front of the wire-reeling frame 7 and the wire-reeling frame 8, and both ends of the wire-reeling device 15 are fixed to the wire-reeling and reeling bracket 9. The wire-reeling device 15 is used to reel in and reel out the cables on the wire-reeling frame 7 and the wire-reeling frame 8.

[0029] like Figure 3 As shown, the rotating lower beam system 3 includes a rotating frame 16, an active guide wheel assembly 17, a passive guide wheel assembly 18, and a lower beam limiting guide roller assembly 19. The two ends of the rotating frame 16 are rotatably mounted on the frame 1 via bearings. The active guide wheel assembly 17 is rotatably mounted at one end of the rotating frame 16, and the passive guide wheel assembly 18 is rotatably mounted at the other end of the rotating frame 16. The active guide wheel assembly 17 and the passive guide wheel assembly 18 are arranged parallel to each other. The cables are wound back and forth around the active guide wheel assembly 17 and the passive guide wheel assembly 18, thereby being evenly distributed within the rotating lower beam system 3. The lower beam limiting guide roller assembly 19 is located at one end of the rotating frame 16 and outside the active guide wheel assembly 17. The lower beam limit guide roller group 19 is also distributed in a tic-tac-toe shape, with two groups of guide rollers arranged vertically up and down, and two guide rollers arranged vertically left and right. The cables for reeling and releasing the cables all pass through the middle of the tic-tac-toe shape of the lower beam limit guide roller group 19 to limit and guide the cables. At the same time, a vertical guide roller is provided on both sides of the rotating frame 16 to guide the cables so as to guide the cables entering and exiting from the middle of the end of the rotating frame 16 to the two ends of the active guide wheel group 17 for entry and exit, so as to facilitate the cables to be wound around the active guide wheel group 17 and the passive guide wheel group 18 in sequence.

[0030] The active guide wheel assembly 17 is composed of multiple active guide wheels of uniform size and a driving shaft. Each active guide wheel is fixedly mounted on the driving shaft. A splined fit between the active guide wheels and the driving shaft limits the circumference of the driving shaft, allowing all active guide wheels to rotate synchronously with the driving shaft. The driving shaft is driven by a built-in drive motor. The passive guide wheel assembly 18 is composed of multiple passive guide wheels of varying sizes and a driven shaft. The multiple passive guide wheels of varying sizes are arranged in descending order along the axial direction of the driven shaft. Each passive guide wheel is rotatably mounted outside the driven shaft. All the passive guide wheels rotate independently, without interfering with each other, and the driven shaft is unpowered. The active guide wheels drive the cable movement, ensuring uniform cable movement within the rotating beam system 3. Simultaneously, the passive guide wheels rotate independently, avoiding local speed differences caused by rotational errors and local tension unevenness between the active and passive guide wheels. Furthermore, the passive guide wheels of the passive guide wheel assembly 18 are of different sizes, allowing the cables wound around them to be staggered laterally, effectively preventing cable obstruction and ensuring that each cable receives uniform, all-round irradiation.

[0031] The rotating retractable wire system 2 and the rotating under-beam system 3 are connected by a coupling 20. Through holes for cables to pass through are provided at the ends of the rotating retractable wire system 2, the ends of the rotating under-beam system 3, and the axis of the coupling 20. The rotary drive mechanism 5 uses a gearbox. The output end of the gearbox is coaxially connected to the coupling 20 and drives the coupling 20 to rotate on the frame 1. The input end of the gearbox is connected to a driving power source (such as a motor). A collector brush 21 is provided on the coupling 20. One side of the collector brush 21 is connected to an external power supply, and the other side of the collector brush 21 supplies power to the internal electrical appliances of the rotating retractable wire system 2 and the rotating under-beam system 3, respectively. The collector brush 21 adopts a multi-stage arrangement to independently power different electrical appliances.

[0032] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the present profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical content disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent replacement and improvement of the above embodiments made according to the technical essence of the present invention, within the spirit and principles of the present invention, without departing from the content of the technical solution of the present invention, shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A cable irradiation device for rail transit vehicles, characterized in that: The system comprises a frame, a rotary pay-off and reel system, a rotary under-beam system, an electron accelerator and a rotary drive mechanism. The rotary pay-off and reel system and the rotary under-beam system are rotatably arranged on the frame and are both driven to rotate by the rotary drive mechanism. The electron accelerator is arranged above the rotary under-beam system. The cable is paid out by the rotary pay-off and reel system, enters the rotary under-beam system, and is then reeled in by the rotary pay-off and reel system. The rotary wire-reeling and rewinding system comprises a wire-reeling frame, a wire-reeling and rewinding frame, a wire-reeling and rewinding bracket, and a wire-reeling and rewinding limiting guide roller group. One end of the wire-reeling and rewinding bracket is rotatably arranged on the frame, and the other end of the wire-reeling and rewinding bracket is a circular frame. A supporting wheel is respectively arranged below both sides of the circular frame. The supporting wheel is rotatably arranged on the supporting wheel bracket. The wire-reeling and rewinding limiting guide roller group is arranged at one end of the wire-reeling and rewinding bracket; The rotating lower beam system includes a rotating frame, an active guide wheel group, a passive guide wheel group and a lower beam limiting guide roller group. Both ends of the rotating frame are rotatably arranged on the frame, the active guide wheel group is rotatably arranged at one end of the rotating frame, and the passive guide wheel group is rotatably arranged at the other end of the rotating frame. The lower beam limiting guide roller group is located at one end of the rotating frame and outside the active guide wheel group. The rotary retractable wire system and the rotary down-bench system are connected via a coupling shaft. Through holes for cables to pass through are provided on the ends of the rotary retractable wire system, the ends of the rotary down-bench system and the axis of the coupling shaft.

2. The cable irradiation equipment for rail transit vehicles according to claim 1, characterized in that: The wire take-up frame and the wire pay-off frame are arranged on the same straight line and are symmetrically arranged on a radial line of the circular frame. A wire take-up and wire pay-off fixing frame is arranged inside the circular frame. One end of the wire take-up frame and the wire pay-off frame is rotatably arranged on the inner wall of the circular frame, and the other end of the wire take-up frame and the wire pay-off frame is rotatably arranged on the wire take-up and wire pay-off fixing frame.

3. The cable irradiation equipment for rail transit vehicles according to claim 2, characterized in that: The rotary wire-reeling and -paying system further comprises a wire-arranging device, which is arranged on the front side of the wire-reeling frame and the wire-paying frame, and both ends of the wire-arranging device are fixed on the wire-reeling and -paying bracket.

4. The cable irradiation equipment for rail transit vehicles according to claim 1, characterized in that: The driving guide wheel group is composed of a plurality of driving guide wheels of the same size and a driving shaft, each of which is fixedly arranged on the driving shaft. The passive guide wheel group is composed of a plurality of passive guide wheels of different sizes and a passive shaft, the plurality of passive guide wheels of different sizes are arranged in sequence from large to small along the axial direction of the passive shaft, and each passive guide wheel is rotatably arranged on the outside of the passive shaft.

5. The cable irradiation equipment for rail transit vehicles according to claim 1, characterized in that: The rotary drive mechanism adopts a gear box, the output end of the gear box is coaxially connected to the coupling shaft and drives the coupling shaft to rotate on the frame, and the input end of the gear box is connected to the driving power source.

6. The cable irradiation equipment for rail transit vehicles according to claim 1, characterized in that: A collecting brush is provided on the coupling shaft, one side of the collecting brush is connected to an external power supply, and the other side of the collecting brush supplies power to the internal electrical appliances of the rotating retractable wire system and the rotating beam lower system respectively.

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