A novel under-beam suspension and movement device

Abstract

The utility model discloses a novel suspension and mobile type beam under device relates to mobile type beam under technical field. A novel suspension and mobile type beam under device, including beam under device main part, mobile car device, shielding door subassembly and positioning assembly, beam under device main part is suspended and is installed on shielding door subassembly, shielding door subassembly is connected with mobile car device, and mobile car device can drive shielding door subassembly and beam under device main part and move along the track, and this novel beam under device adopts suspension and mobile type structure, and can move to the shielding chamber outside with the opening of shielding door, compared with the device of traditional fixed installation in the irradiation chamber, and the operator can complete the irradiated material's loading and unloading, positioning etc. operation without entering the irradiation chamber, not only simplifies the operation process, reduces the operation step, also avoided the safety risk of residual radiation that possibly faced because of entering the irradiation chamber, and the convenience and safety of operation have been improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of mobile harness technology, and in particular to a novel suspension and mobile harness device. Background Technology

[0002] In the field of accelerator irradiation technology, the beam-down unit, as the core equipment for transporting irradiated materials, directly affects the efficiency of irradiation operations, ease of operation, and equipment maintenance costs through its structural design and operation mode. Currently, the beam-down units widely used in the industry generally adopt a fixed installation mode, that is, the entire unit is installed in a specific position in the irradiation chamber by means of bolts, brackets, and other fixed structures, and its position cannot be adjusted according to operational needs or maintenance operations. Because the device is fixed inside the irradiation chamber, operators need to enter the chamber to load, unload, and position the irradiated materials. This not only increases the complexity of the operation process but may also affect the safety and efficiency of the operation due to the limited space or environmental factors inside the irradiation chamber. When the under-beam device experiences component wear, malfunction, or requires regular maintenance, maintenance personnel must work in the narrow space of the irradiation chamber. This not only makes disassembly and repair difficult but may also lead to incomplete maintenance due to limited operating space, thereby affecting the stability of the device's operation and hindering the long-term stable operation of the accelerator irradiation system. Utility Model Content

[0003] The purpose of this invention is to at least solve one of the technical problems existing in the prior art, and to provide a novel suspended and mobile beam-down device. This device solves the problem that, since the device is fixed in the irradiation chamber, operators need to enter the irradiation chamber to load, unload, and position the irradiated material. This not only increases the complexity of the operation process, but may also affect the safety and efficiency of operation due to the limited space or environmental factors inside the irradiation chamber. When the beam-down device experiences component wear, malfunction, or requires regular maintenance, maintenance personnel must work in the narrow space of the irradiation chamber. This not only makes disassembly and repair difficult, but may also lead to incomplete maintenance due to limited operating space, thereby affecting the stability of the device's operation and hindering the long-term stable operation of the accelerator irradiation system.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a novel suspension and movable harness device, comprising: The main body of the beam-down device, the mobile vehicle device, the shielding door assembly, and the positioning assembly; The main body of the lowering device is suspended and installed on the platform screen door assembly. The platform screen door assembly is connected to the mobile vehicle device, which can drive the platform screen door assembly and the main body of the lowering device to move along the track. The main body of the cable lowering device includes a frame structure, active rollers, power transmission components, and a shielding protection structure. The frame structure is made of seamless 316 stainless steel square tubing. A stainless steel base plate and a 316 stainless steel frame mounting plate are welded onto the frame structure. The 316 stainless steel frame mounting plate is fixedly connected to the welding plate by large-size positioning pins and large-size bolts. The welding plate is directly welded to the shielding door component. There are two active rollers, which are arranged at intervals along the cable conveying direction. The cable is wound around the two active rollers in a figure-eight pattern. Both ends of the active rollers are connected to the frame structure through bearing seats. The mobile vehicle device includes longitudinal beams, connecting crossbeams, wheels, a mobile motor, wheel spindles, wheel reducers, transmission chains, transmission sprockets, wheel bearing housings, shielding plate mounting brackets, and rails. The longitudinal beams and connecting crossbeams are fixed to form the mobile vehicle frame. The wheel bearing housings are fixed to the bottom of the mobile vehicle frame. The wheel spindles pass through the wheel bearing housings. The wheels are fixed at both ends of the wheel spindles and are adapted to the rails. The mobile motor and wheel reducers are fixed to the mobile vehicle frame. The output end of the mobile motor is connected to the input end of the wheel reducer. The output end of the wheel reducer is connected to the wheel spindles via transmission sprockets and transmission chains, driving the wheels to rotate along the rails. The shielding plate mounting brackets are fixed to the top of the mobile vehicle frame, and the shielding door assembly is fixed to the shielding plate mounting brackets. The positioning assembly includes a conical device and a positioning frame. There are two conical devices with conical inner holes. The two conical devices are welded to one end of the frame structure of the main body of the beam-down device at a preset position. The positioning frame is fixed to the side plate inside the shielding room by bolts. Conical pins are fixed on both sides of the positioning frame at the positions of the conical devices. The outer cone angle of the conical pin is consistent with the inner cone angle of the conical device. When the main body of the beam-down device moves to the preset position inside the shielding room, the conical pins engage with the conical devices to ensure that the relative position of the main body of the beam-down device and the accelerator titanium window is fixed.

[0005] Preferably, the power transmission assembly includes a transmission connection assembly, a power motor, a reducer, and a universal joint. The transmission connection assembly is mounted on the shielding door assembly and includes a bearing, a drive shaft, and a bearing cover plate. The shielding door assembly has mounting holes for the drive shaft to pass through. The bearing is embedded in the mounting holes, and the drive shaft passes through the bearing. Two bearing cover plates are provided, respectively fixed on both sides of the shielding door assembly and covering the mounting holes. The bearing cover plates have through holes for the drive shaft to pass through, and the through holes are clearance-fitted with the drive shaft. The through holes on both sides of the bearing cover plates are staggered along the axis of the drive shaft. The power motor and the reducer are fixed on the outside of the shielding door assembly. The output end of the power motor is connected to the input end of the reducer. The output end of the reducer is connected to one end of the drive shaft through a universal joint. The other end of the drive shaft is connected to the input ends of two drive rollers through universal joints to realize power transmission.

[0006] Preferably, the power motor and the reducer are covered with a protective cover, which is fixedly connected to the shielding door assembly to reduce radiation damage to the power motor and the reducer.

[0007] Preferably, the frame structure, stainless steel base plate, 316 stainless steel frame mounting plate and welding plate are all made of 316 stainless steel.

[0008] Preferably, the frame structure is rigidly fixed to the shielding door assembly by welding with a 316 stainless steel seamless square tube and a welding plate.

[0009] Preferably, the wheel bearing housing is provided with a dustproof sealing ring, which is sleeved on the outside of the wheel spindle.

[0010] Preferably, the weld between the conical device and the frame structure is provided with a reinforcing rib, one end of which is welded to the outer wall of the conical device and the other end is welded to the surface of the frame structure.

[0011] Preferably, the connection between the drive shaft and the universal joint is provided with a keyway and a flat key, with the flat key being embedded in the keyway.

[0012] Preferably, the track has guide edges on both sides, the guide edges are perpendicular to the top surface of the track, and the inner side of the wheel has a groove corresponding to the guide edge, the groove is adapted to the guide edge.

[0013] Preferably, the connection between the shielding plate mounting bracket and the shielding door assembly is provided with a buffer pad, which is made of elastic rubber.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This novel suspended and mobile beam-down device features a suspended and mobile structure, allowing it to be moved outside the shielding room as the shielding door is opened. Compared to traditional devices that are fixedly installed inside the irradiation room, operators can complete the loading, unloading, and positioning of irradiated materials without entering the irradiation room. This not only simplifies the operation process and reduces the number of steps, but also avoids the safety risks such as residual radiation that may be encountered when entering the irradiation room, significantly improving the convenience and safety of operation.

[0015] This new type of suspended and mobile beam-down device allows maintenance personnel to move outside the irradiation chamber with the shielding door, eliminating the need to work in the confined space of the irradiation room when performing equipment maintenance, upkeep, or troubleshooting. This provides a more open operating space and a safer working environment, making disassembly, inspection, and component replacement more convenient and efficient during maintenance. It also enables more thorough maintenance work, effectively ensuring maintenance quality and reducing potential equipment failures caused by incomplete maintenance. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the track structure of this utility model; Figure 3 This is a schematic diagram of the shielding door mounting bracket structure of this utility model; Figure 4 This is a schematic diagram of the connecting beam structure of this utility model; Figure 5 This is a schematic diagram of the longitudinal beam structure of this utility model; Figure 6 This is a schematic diagram of the shielding door assembly structure of this utility model; Figure 7 This is a schematic diagram of the titanium window structure of this utility model.

[0017] Reference numerals: 1. Frame structure; 2. Stainless steel base plate; 3. 316 stainless steel frame mounting plate; 4. Welding plate; 5. Drive roller; 6. Titanium window; 7. Shielding door assembly; 8. Large-size positioning pin; 9. Large-size bolt; 10. Transmission connection assembly; 11. Bearing cover plate; 12. Power motor; 13. Reducer; 14. Conical device; 15. Positioning frame; 16. Pin head; 17. Longitudinal beam; 18. Connecting crossbeam; 19. Wheel; 20. Moving motor; 21. Wheel spindle; 22. Wheel reducer; 23. Transmission chain; 24. Transmission sprocket; 25. Wheel bearing housing; 26. Shielding plate mounting bracket; 27. Track; 28. Universal coupling; 29. ​​Bearing housing. Detailed Implementation

[0018] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0019] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing 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.

[0020] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0021] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0022] Please see Figure 1-7 This utility model provides a technical solution: a novel suspension and movable harness device, comprising: The main body of the beam-down device, the mobile vehicle device, the shielding door assembly 7, and the positioning assembly; The main body of the beam-down device is suspended on the shielding door assembly 7. The shielding door assembly 7 is connected to the mobile vehicle device. The mobile vehicle device drives the shielding door assembly 7 and the main body of the beam-down device to move along the track 27, so that the main body of the beam-down device can move inside and outside the shielding room as the shielding door is opened or closed. The main body of the cable lowering device includes a frame structure 1, active rollers 5, a power transmission assembly, and a shielding protection structure. The frame structure 1 is made of seamless 316 stainless steel square tubing. A stainless steel base plate 2 and a 316 stainless steel frame mounting plate 3 are welded onto the frame structure 1. The 316 stainless steel frame mounting plate 3 is fixedly connected to the welding plate 4 by large-size positioning pins 8 and large-size bolts 9. The welding plate 4 is directly welded to the shielding door assembly 7. There are two active rollers 5, which are arranged at intervals along the cable conveying direction. The cable is wound around the two active rollers 5 in a figure-eight pattern. Both ends of the active rollers 5 are connected to the frame structure 1 through bearing seats 29. The mobile vehicle device includes a longitudinal beam 17, a connecting crossbeam 18, wheels 19, a mobile motor 20, a wheel spindle 21, a wheel reducer 22, a transmission chain 23, a transmission sprocket 24, a wheel bearing housing 25, a shielding plate mounting bracket 26, and a track 27. The longitudinal beam 17 and the connecting crossbeam 18 are fixed to form the mobile vehicle frame. The wheel bearing housing 25 is fixed to the bottom of the mobile vehicle frame. The wheel spindle 21 passes through the wheel bearing housing 25. The wheels 19 are fixed to both ends of the wheel spindle 21 and are adapted to the track 27. The mobile motor 20 and the wheel reducer 22 are fixed to the mobile vehicle frame. The output end of the mobile motor 20 is connected to the input end of the wheel reducer 22. The output end of the wheel reducer 22 is connected to the wheel spindle 21 through the transmission sprocket 24 and the transmission chain 23, driving the wheels 19 to rotate along the track 27. The shielding plate mounting bracket 26 is fixed to the top of the mobile vehicle frame, and the shielding door assembly 7 is fixed to the shielding plate mounting bracket 26. The positioning assembly includes a conical device 14 and a positioning frame 15. Two conical devices 14 are provided, and their inner holes are conical structures. The two conical devices 14 are welded to one end of the frame structure 1 of the main body of the beam-down device at a preset position. The positioning frame 15 is fixed to the side plate inside the shielding room by bolts. Conical pins 16 are fixed on both sides of the positioning frame 15 at the positions corresponding to the conical devices 14. The outer cone angle of the conical pins 16 is consistent with the inner cone angle of the conical devices 14. When the main body of the beam-down device moves to the preset position inside the shielding room, the conical pins 16 and the conical devices 14 are engaged and positioned to ensure that the relative position of the main body of the beam-down device and the accelerator titanium window 6 is fixed.

[0023] The power transmission assembly includes a transmission connection assembly 10, a power motor 12, a reducer 13, and a universal coupling 28. The transmission connection assembly 10 is mounted on the shielding door assembly 7 and includes a bearing, a drive shaft, and a bearing cover plate 11. The shielding door assembly 7 has mounting holes for the drive shaft to pass through. The bearing is embedded in the mounting holes, and the drive shaft passes through the bearing. There are two bearing cover plates 11, which are fixed to both sides of the shielding door assembly 7 and cover the mounting holes. The bearing cover plates 11 have through holes for the drive shaft to pass through. The through holes are clearance-fitted with the drive shaft, and the through holes of the two bearing cover plates 11 are staggered along the axis of the drive shaft. The power motor 12 and the reducer 13 are fixed to the outside of the shielding door assembly 7. The output end of the power motor 12 is connected to the input end of the reducer 13. The output end of the reducer 13 is connected to one end of the drive shaft through the universal coupling 28. The other end of the drive shaft is connected to the input ends of the two drive rollers 5 through the universal coupling 28 to realize power transmission.

[0024] The power motor 12 and the reducer 13 are covered with a protective cover, which is fixedly connected to the shielding door assembly 7 to reduce radiation damage to the power motor 12 and the reducer 13.

[0025] The frame structure 1, stainless steel base plate 2, 316 stainless steel frame mounting plate 3 and welding plate 4 are all made of 316 stainless steel. After the 316 stainless steel frame mounting plate 3 and welding plate 4 are fixed, the whole assembly is processed to the preset size and dimensional tolerance to ensure the installation accuracy of the parts.

[0026] The diameter of the active roller 5 is 350mm. The total weight of the assembly consisting of two active rollers 5 and frame structure 1 is 2500kg. The frame structure 1 is fixed to the shielding door assembly 7 by the rigidity of 316 stainless steel seamless square tube and the welding plate 4, so that the active roller 5 can be cantilevered and without sagging. The active roller 5 rotates without shaking. The wheel 19 is made of wear-resistant alloy material. The wheel bearing housing 25 is equipped with a dustproof sealing ring. The dustproof sealing ring is sleeved on the outside of the wheel main shaft 21 to prevent dust from entering the bearing and affecting the rotation accuracy.

[0027] A reinforcing rib is provided at the welding point between the conical device 14 and the frame structure 1. One end of the reinforcing rib is welded to the outer wall of the conical device 14, and the other end is welded to the surface of the frame structure 1, thereby improving the installation stability of the conical device 14.

[0028] The connection between the drive shaft and the universal joint 28 is provided with a keyway and a flat key. The flat key is embedded in the keyway to achieve circumferential fixation between the drive shaft and the universal joint 28 and prevent slippage during power transmission.

[0029] Guide edges are provided on both sides of the track 27, and the guide edges are perpendicular to the top surface of the track 27. The inner side of the wheel 19 is provided with a groove corresponding to the guide edge. The groove is adapted to the guide edge to prevent the mobile vehicle device from deviating from the preset path when it moves along the track 27. A buffer pad is provided at the connection between the shielding plate mounting bracket 26 and the shielding door assembly 7. The buffer pad is made of elastic rubber material to reduce the vibration transmission between the shielding door assembly 7 and the shielding plate mounting bracket 26 during the movement of the mobile vehicle device.

[0030] Furthermore, when using this device, its movement is powered by a mobile vehicle. Through a power transmission path of "motor-reduction-transmission-travel," the shielding door assembly and the main body of the suspended harness device move along the track, breaking the limitations of traditional fixed installation of harness devices. The specific process is as follows: Power output start: When it is necessary to move the under-beam device out of the shielded room or into the room, start the moving motor 20. The power output of the moving motor is first transmitted to the wheel reducer 22. Speed ​​reduction and torque amplification: The wheel reducer 22 reduces the power of the motor while amplifying the torque to ensure that the output power meets the load requirements of the mobile vehicle to drive the entire device. Power is transmitted through the transmission chain: The output end of the reducer transmits power to the main shaft of the wheel 21 through the chain transmission mechanism composed of the transmission sprocket 24 and the transmission chain 23, driving the main shaft of the wheel to rotate around the bearing in the wheel bearing housing 25. Traveling along the track: The wheels 19 are fixed at both ends of the main shaft 21 and rotate synchronously with the main shaft. Since the wheels are compatible with the track 27, the moving vehicle frame drives the shielding plate mounting bracket 26, the shielding door assembly 7 and the main body of the suspended beam-down device on the top to move smoothly along the track, and finally realize the switching of the beam-down device between the inside and outside of the shielding room.

[0031] The main body of the cable-carrying device serves as the core of cable transport. It achieves cantilever support through a high-strength frame structure and ensures uniform irradiation of the cable using an "8"-shaped winding method. The specific principle is as follows: High-strength frame support: The frame structure 1 is made of seamless 316 stainless steel square tubing, which combines high strength and high rigidity and can withstand a total weight of 2500kg. The stainless steel base plate 2 welded on the frame is used to install auxiliary components. The 316 stainless steel frame mounting plate 3 is precisely fixed to the welding plate 4 by large-size positioning pins 8 and large-size bolts 9. The welding plate 4 is then directly welded to the shielding door assembly 7 to form a rigid connection of "frame-welding plate-shielding door", ensuring that the active roller 5 cantilever does not sag when installed and does not vibrate when rotated. Cable winding and irradiation adaptation: Two active rollers 5 are arranged at intervals along the cable conveying direction. The cable is wound in a figure-eight pattern on the surface of the rollers. This winding method can increase the contact area between the cable and the accelerator electron beam and ensure a uniform contact path. The two ends of the active rollers are connected to the frame structure 1 through bearing seats 29. The bearing seats can reduce the frictional resistance when the rollers rotate, ensure the stable cable conveying speed, and further ensure uniform and constant irradiation dose.

[0032] To prevent damage to power components from radiation within the irradiation chamber and to prevent radiation leakage, the device employs a special power transmission structure and shielding design to achieve dual protection. The specific principle is as follows: Power transmission across the platform screen door: The power motor 12 and the reducer 13 are installed on the outside of the platform screen door assembly 7. Their power is transmitted to the indoor drive roller 5 through the path of "universal coupling-drive shaft-universal coupling". The output end of the reducer 13 is connected to the drive shaft through the universal coupling 28. The other end of the drive shaft is then connected to the input ends of the two drive rollers through the universal coupling 28 respectively. The universal coupling can compensate for installation errors and ensure smooth power transmission. Radiation leakage protection: The drive shaft mounting hole on the shielding door assembly 7 achieves "multi-layer shielding" through the transmission connection assembly 10. The bearing is embedded in the hole to reduce the effective diameter of the hole and reduce the probability of direct radiation penetration. A bearing cover plate 11 is provided on each side of the mounting hole. The cover plate only has a small hole that fits the clearance of the drive shaft, and the small holes on the two side cover plates are staggered along the axis. The radiation needs to be refracted multiple times to pass through the gap, which greatly attenuates the radiation energy. The power motor and reducer are covered with a protective cover to further block possible radiation leakage, while preventing dust from entering the power components and extending their service life.

[0033] After each movement, the beam-down device needs to return to a preset position to ensure that the relative position of the cable on the active roller and the accelerator titanium window 6 is fixed. The device achieves this function through "conical fitting positioning," the specific principle of which is as follows: Preset positioning reference: During installation, first adjust the relative position of the main body of the beam-down device and the titanium window 6 to the optimal irradiation state, and then fix the positioning components simultaneously: two conical devices 14 with conical inner holes are welded to one end of the frame structure 1 at the preset position, and the positioning frame 15 is fixed to the inner side plate of the shielding room by bolts, and the outer cone angle of the conical pin head 16 on both sides of the positioning frame is completely consistent with the inner cone angle of the conical device 14. Automatic positioning after movement: When the moving vehicle moves the main body of the beam-down device into the preset position in the shielding room, the conical pin 16 will gradually embed into the corresponding conical device 14. Since the conical surface has automatic centering characteristics, it can correct the small position deviation during the movement, so that the main body of the beam-down device can accurately return to the initial position, ensuring that the electron beam dose of the cable is uniform and constant, and avoiding the deterioration of the irradiation effect due to position deviation.

[0034] This novel beam-down device adopts a suspended and movable structure, which can be moved outside the shielding room when the shielding door is opened. Compared with the traditional device that is fixedly installed in the irradiation room, the operator can complete the loading, unloading, positioning and other operations of the irradiated material without entering the irradiation room. This not only simplifies the operation process and reduces the number of operation steps, but also avoids the safety risks such as residual radiation that may be faced when entering the irradiation room, which significantly improves the convenience and safety of operation.

[0035] Because the underbeam unit can be moved outside the shielding chamber with the shielding door, maintenance personnel no longer need to work in the confined space of the irradiation chamber when performing equipment maintenance, upkeep, or troubleshooting. They have a more open operating space and a safer working environment, making disassembly, inspection, and component replacement more convenient and efficient. This allows for more thorough maintenance, effectively ensuring maintenance quality and reducing the risk of equipment failure due to incomplete maintenance. Structural Description: Frame Structure 1: Made of seamless 316 stainless steel square tubing, it provides high-strength rigid support for the main body of the lower device, and is used to install the stainless steel base plate, frame mounting plate and active roller bearing seat, bearing a total weight of 2500kg, ensuring that the active roller cantilever installation is free from sagging; Stainless steel base plate 2: welded to frame structure 1, made of 316 stainless steel, mainly used for installing auxiliary components of the main body of the bundle lowering device, improving the neatness of component installation; 316 stainless steel frame mounting plate 3: welded to frame structure 1, and fixed to matching plate 4 by large-size positioning pins 8 and large-size bolts 9. After fixing, the whole process is processed to ensure installation accuracy and realize the connection between frame structure and shielding door assembly. Welding plate 4: Made of 316 stainless steel, one end is directly welded to the shielding door assembly 7, and the other end is fixed to the 316 stainless steel frame mounting plate 3, forming a rigid connection of "frame-welding plate-shielding door" to transmit support force; Active roller 5: There are two in total, arranged at intervals along the cable conveying direction, with a diameter of 350mm. The cable is wound around it in a figure-eight pattern, and both ends are connected to the frame structure 1 through bearing seats 29. It is used to carry and convey the cable to ensure that the cable is irradiated evenly. 6. The accelerator titanium window: The main body of the beam under-beam device must maintain a fixed relative position with it. It is a key component for electron beam output, ensuring that the electron beam can accurately act on the cable on the active roller to ensure the irradiation effect. Shielding door assembly 7: Connects the main body of the lower device to the mobile vehicle device, with mounting holes for the drive shaft to pass through, and a power motor 12 and a reducer 13 installed on the outside. It can move with the mobile vehicle and serves as both a shielding device for radiation and a load-bearing component. Large-size locating pin 8: Used for positioning and connecting the 316 stainless steel frame mounting plate 3 and the welding plate 4 to ensure the positional accuracy of the two during installation and to assist in subsequent bolt fixing; Large bolt 9: In conjunction with large locating pin 8, it fastens the 316 stainless steel frame mounting plate 3 to the welding plate 4, enhancing connection stability and transferring support load; Transmission connection assembly 10: Located in shielding door assembly 7, it includes bearing, transmission shaft and bearing cover plate 11. The bearing is embedded in the mounting hole and the transmission shaft passes through the bearing to realize the transmission of power across the shielding door and reduce radiation leakage at the same time. Bearing cover plate 11: There are two pieces in total. They are fixed on both sides of the shielding door assembly 7 and cover the mounting holes. They have misaligned through holes that fit the drive shaft with clearance, which greatly attenuates the radiation energy and prevents radiation leakage. The power motor 12 is fixed to the outside of the shielding door assembly 7, and its output end is connected to the reducer 13 to provide power for the rotation of the drive roller 5. The outer side is covered with a protective shell to prevent radiation damage. Reducer 13: Fixed to the outside of the shielding door assembly 7, with the input end connected to the power motor 12 and the output end connected to the transmission shaft through the universal coupling 28, which reduces the power of the motor and amplifies the torque to meet the speed requirements of the drive drum. Conical device 14: There are two in total. The inner hole is conical. They are welded to one end of the frame structure 1. A reinforcing rib is provided at the weld. When the lower device moves into the preset position, it engages with the conical pin head 16 to achieve positioning. Positioning frame 15: It is fixed to the inner side plate of the shielding room by bolts, and the conical pins 16 are installed on both sides corresponding to the conical device 14 to provide reference support for the positioning of the beam-down device and ensure the stability of the positioning structure; Conical ejector head 16: Fixed on both sides of the positioning frame 15, with the outer cone angle consistent with the inner cone angle of the conical device 14. When the beam lowering device is in place, it is embedded in the conical device to correct the positional deviation and ensure that its relative position with the accelerator titanium window 6 is fixed. Longitudinal beam 17: It is fixed to the connecting crossbeam 18 to form a mobile vehicle frame, providing longitudinal support for the mobile vehicle device. The bottom is equipped with a wheel bearing seat housing 25, and the top is fixed with a shielding plate mounting bracket 26. Connecting beam 18: It is fixed to the longitudinal beam 17 to form the mobile vehicle frame, which enhances the lateral stability of the frame and enables the mobile vehicle frame to stably support the shielding door assembly 7 and the main body of the lower device. Wheel 19: Made of wear-resistant alloy material, fixed at both ends of the wheel spindle 21, adapted to the track 27, with grooves on the inner side adapted to the guide edge of the track, and drives the moving vehicle to move along the track as the spindle rotates; Mobile motor 20: Fixed to the frame of the mobile vehicle, with its output end connected to the wheel reducer 22, providing power for the mobile vehicle device to move along the track 27; Wheel spindle 21: It is installed inside the wheel bearing housing 25, with wheels 19 fixed at both ends, receiving the power transmitted by the transmission chain 23 and driving the wheels to rotate synchronously; Wheel reducer 22: Fixed to the frame of the mobile vehicle, the input end is connected to the mobile motor 20, and the output end is connected to the transmission chain 23 through the transmission sprocket 24. It reduces the power of the motor and amplifies the torque to meet the load requirements of the mobile vehicle. Drive chain 23: It works with drive sprocket 24 to connect the output end of wheel reducer 22 to wheel spindle 21, and transmits the power of reducer to wheel spindle to drive wheel rotation; Transmission sprocket 24: It is installed at the output end of the wheel reducer 22 and the wheel spindle 21 respectively, and meshes with the transmission chain 23 to realize the transmission of power from the reducer to the wheel spindle; Wheel bearing housing 25: Fixed to the bottom of the mobile vehicle frame, with built-in bearings for the wheel spindle 21 to pass through, and a dustproof sealing ring is provided on the outside of the spindle to prevent dust from entering and affecting the rotational accuracy. Shielding plate mounting bracket 26: fixed to the top of the mobile vehicle frame, used to fix the shielding door assembly 7, and the connection part is equipped with an elastic rubber buffer pad to reduce vibration transmission during movement; Track 27: Guide edges perpendicular to the top surface are provided on both sides, which are adapted to the wheels 19 to provide a moving path for the mobile vehicle device. The guide edges prevent the mobile vehicle from deviating from the preset path. Universal coupling 28: Connects the output end of reducer 13 to drive shaft and drive shaft to input end of drive roller 5 respectively. It can compensate for installation errors and ensure smooth power transmission between different components. Bearing housing 29: Installed on frame structure 1, used to support both ends of drive drum 5, reduce frictional resistance when drive drum rotates, and ensure stable cable conveying speed.

[0036] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A novel suspension and movable harness device, characterized in that, include: The main body of the beam-down device, the mobile vehicle device, the shielding door assembly (7) and the positioning assembly; The main body of the beam-down device is suspended on the shielding door assembly (7). The shielding door assembly (7) is connected to the mobile vehicle device. The mobile vehicle device can drive the shielding door assembly (7) and the main body of the beam-down device to move along the track (27). The main body of the lowering device includes a frame structure (1), an active roller (5), a power transmission component and a shielding protection structure. The frame structure (1) is made of seamless 316 stainless steel square tubing. A stainless steel base plate (2) and a 316 stainless steel frame mounting plate (3) are welded onto the frame structure (1). The 316 stainless steel frame mounting plate (3) is fixedly connected to the welding plate (4) by large-size positioning pins (8) and large-size bolts (9). Among them, the welding plate (4) is directly welded to the shielding door assembly (7), and there are two active rollers (5) arranged at intervals along the cable conveying direction. The cable is wound around the two active rollers (5) in a figure-eight shape. Both ends of the active rollers (5) are connected to the frame structure (1) through bearing seats (29). The mobile vehicle device includes a longitudinal beam (17), a connecting crossbeam (18), wheels (19), a mobile motor (20), a wheel spindle (21), a wheel reducer (22), a transmission chain (23), a transmission sprocket (24), a wheel bearing housing (25), a shielding plate mounting bracket (26), and a track (27). The longitudinal beam (17) and the connecting crossbeam (18) are fixed to form the mobile vehicle frame. The wheel bearing housing (25) is fixed to the bottom of the mobile vehicle frame. The wheel spindle (21) passes through the wheel bearing housing (25). The wheels (19) are fixed to both ends of the wheel spindle (21) and are adapted to the track (27). Among them, the mobile motor (20) and the wheel reducer (22) are fixed on the mobile vehicle frame. The output end of the mobile motor (20) is connected to the input end of the wheel reducer (22). The output end of the wheel reducer (22) is connected to the wheel spindle (21) through the transmission sprocket (24) and the transmission chain (23) to drive the wheel (19) to rotate along the track (27). The shielding plate mounting bracket (26) is fixed on the top of the mobile vehicle frame. The shielding door assembly (7) is fixed on the shielding plate mounting bracket (26). The positioning assembly includes a conical device (14) and a positioning frame (15). There are two conical devices (14), and their inner holes are conical structures. The two conical devices (14) are welded to one end of the frame structure (1) of the main body of the beam-down device according to the preset position. The positioning frame (15) is fixed to the side plate inside the shielding room by bolts. Conical pins (16) are fixed on both sides of the positioning frame (15) corresponding to the positions of the conical devices (14). The outer cone angle of the conical pins (16) is consistent with the inner cone angle of the conical devices (14). When the main body of the beam-down device moves to the preset position inside the shielding room, the conical pins (16) are engaged and positioned with the conical devices (14) to ensure that the relative position of the main body of the beam-down device and the accelerator titanium window (6) is fixed.

2. The novel suspension and movable harness device according to claim 1, characterized in that: The power transmission assembly includes a transmission connection assembly (10), a power motor (12), a reducer (13), and a universal coupling (28). The transmission connection assembly (10) is installed on the shielding door assembly (7) and includes a bearing, a transmission shaft, and a bearing cover plate (11). The shielding door assembly (7) has an installation hole for the transmission shaft to pass through. The bearing is embedded in the installation hole, and the transmission shaft passes through the bearing. There are two bearing cover plates (11), which are fixed on both sides of the shielding door assembly (7) and cover the installation hole. Among them, the bearing cover plate (11) is provided with a through hole for the transmission shaft to pass through. The through hole is clearance-fitted with the transmission shaft, and the through holes of the bearing cover plates (11) on both sides are staggered along the axis of the transmission shaft. The power motor (12) and the reducer (13) are fixed on the outside of the shielding door assembly (7). The output end of the power motor (12) is connected to the input end of the reducer (13). The output end of the reducer (13) is connected to one end of the transmission shaft through a universal coupling (28). The other end of the transmission shaft is connected to the input ends of the two drive rollers (5) through a universal coupling (28) to realize power transmission.

3. A novel suspension and movable harness device according to claim 2, characterized in that: The power motor (12) and the reducer (13) are covered with a protective cover, which is fixedly connected to the shielding door assembly (7) to reduce radiation damage to the power motor (12) and the reducer (13).

4. A novel suspension and movable harness device according to claim 1, characterized in that: The frame structure (1), stainless steel base plate (2), 316 stainless steel frame mounting plate (3) and welding plate (4) are all made of 316 stainless steel.

5. A novel suspension and movable harness device according to claim 1, characterized in that: The frame structure (1) is fixed to the shielding door assembly (7) by the rigidity of the 316 stainless steel seamless square tube and the welding plate (4).

6. A novel suspension and movable harness device according to claim 1, characterized in that: The wheel bearing housing (25) is provided with a dustproof sealing ring, which is sleeved on the outside of the wheel spindle (21).

7. A novel suspension and movable harness device according to claim 1, characterized in that: The weld between the conical device (14) and the frame structure (1) is provided with a reinforcing rib plate. One end of the reinforcing rib plate is welded to the outer wall of the conical device (14), and the other end is welded to the surface of the frame structure (1).

8. A novel suspension and movable harness device according to claim 2, characterized in that: The connection between the drive shaft and the universal joint (28) is provided with a keyway and a flat key, with the flat key being embedded in the keyway.

9. A novel suspension and movable harness device according to claim 1, characterized in that: The track (27) has guide edges on both sides, the guide edges are perpendicular to the top surface of the track (27), and the inner side of the wheel (19) has a groove corresponding to the guide edge, the groove is adapted to the guide edge.

10. A novel suspension and movable harness device according to claim 1, characterized in that: The connection between the shielding plate mounting bracket (26) and the shielding door assembly (7) is provided with a buffer pad, which is made of elastic rubber.

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