Auxiliary docking device and radioactive waste drying equipment

Abstract

The auxiliary butt joint device comprises a lifting mechanism and a driving mechanism, the lifting mechanism can ascend and descend in the vertical direction, the lifting mechanism is arranged below a drying position where a conveying device passes, and a drying head above the drying position, the drying position and the lifting mechanism are located in the same vertical direction; the driving end of the driving mechanism is connected with the lifting mechanism and used for driving the lifting mechanism to ascend to the drying position so that the drying barrel which is located at the drying position and limited and supported by the conveying device in the circumferential direction can be jacked to be in butt joint with the drying head, the lifting mechanism is driven to descend to exit from the drying position, and the dried drying barrel descends and returns to the conveying device. The auxiliary docking device is simple in structure and reasonable in layout, does not depend on personnel operation, can automatically run, and meets the inspection and maintenance requirements in the radioactive environment. The invention further provides radioactive waste drying equipment.

Description

Technical Field

[0001] The invention specifically relates to an auxiliary docking device and radioactive waste drying equipment. Background Art

[0002] During the operation of nuclear fuel reprocessing facilities, medium- and high-level radioactive solid wastes need to be dried and then stored in barrels to ensure the safety of subsequent disposal of medium- and high-level radioactive solid wastes. During the drying process, the drying head needs to be docked with the drying barrel to seal and form a drying chamber. This process requires the drying barrel and the drying head to move relative to each other to complete the docking. However, since the contents of the drying barrel are radioactive, this docking operation requires the assistance of automated equipment in a radioactive environment. If conventional manipulators are used, it is easy to interfere with the frame of the drying head or the drying barrel transportation device, which increases the difficulty of operation and makes it difficult to form a drying-transportation assembly line. Conventional mechanical equipment on the market is not suitable for the needs of long-distance inspection and maintenance in a radioactive environment. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an auxiliary docking device for the above-mentioned deficiencies in the prior art, which has a simple structure, a reasonable layout, does not rely on human operation, can be automatically operated, and meets the inspection and maintenance requirements in a radioactive environment. The present invention also provides a radioactive waste drying device.

[0004] The present invention provides an auxiliary docking device, comprising a lifting mechanism and a driving mechanism. The lifting mechanism can be lifted and lowered in a vertical direction. The lifting mechanism is arranged below a drying position passed by a transport device, so that a drying head above the drying position, the drying position and the lifting mechanism are located in the same vertical direction. The driving end of the driving mechanism is connected to the lifting mechanism, and is used to drive the lifting mechanism to rise to the drying position, so as to lift a drying barrel that is in the drying position and is circumferentially limited and supported by the transport device to dock with the drying head, and to drive the lifting mechanism to descend and exit the drying position, so that the drying barrel that has completed drying falls back to the transport device.

[0005] Furthermore, the driving mechanism includes a driving machine and an unlocking machine, both of which are telescopic driving mechanisms, and are arranged and connected in series along the same direction, so that the driving machine and the unlocking machine can output their own telescopic drives in this direction. The unlocking machine remains in an extended position under normal conditions, and the driving mechanism is raised and lowered by the telescopic driving lifting mechanism of the driving machine. In the event of a fault, the driving mechanism is driven to descend and exit the drying position by the contraction of the unlocking machine to achieve unlocking.

[0006] Furthermore, the unlocking machine is connected between the output shaft of the driving machine and the lifting mechanism, and the output shaft of the driving machine and the output shaft of the unlocking machine are butt-connected.

[0007] Furthermore, the driving machine and the unlocking machine are both screw elevators.

[0008] Furthermore, the driving mechanism also includes a motor assembly and a first guide member. The motor assembly serves as a first integral module and can be detachably connected to the driving machine to provide energy for the extension and retraction of the driving machine. The first guide member is connected to the unlocking machine and is used to cooperate with an external electric operating device to provide power for the contraction of the unlocking machine.

[0009] Furthermore, the lifting mechanism includes an upper platform, a lower platform and a cross-link, the cross-link is a scissor-like structure formed by crossing rods and hinged in the middle, the upper and lower ends on one side of the cross-link are respectively hingedly connected to the upper platform and the lower platform, and the upper and lower ends on the other side serve as movable ends, which are respectively movably connected to the upper platform and the lower platform in the horizontal direction. The driving mechanism is horizontally arranged on the side of the lifting mechanism where the movable end of the cross-link is located, and the driving end is connected to the movable end of the cross-link, and the cross-link is driven by horizontal telescopic driving to drive the upper platform to rise and fall.

[0010] Furthermore, the upper platform and the lower platform are both provided with horizontal limiting grooves, and the movable ends of the cross connecting rods are both provided with articulated wheels, and the articulated wheels are arranged in the limiting grooves and move along the limiting grooves.

[0011] Furthermore, the auxiliary docking device also includes a guiding mechanism, which is fixedly installed on the ground below the transport device, and the lifting mechanism and the driving mechanism are connected to form a second integral module, and the second integral module is detachably embedded in the guiding mechanism.

[0012] Furthermore, the guide mechanism includes two vertical plates which are parallel to each other and vertically arranged, and guide grooves are provided on the opposite inner sides of the two vertical plates. The second integral module is arranged between the two vertical plates, and a guide wheel is provided at one end of the lifting mechanism close to the drying position, and the guide wheel slides in the guide groove. The guide groove extends in the horizontal direction and is arranged obliquely, and the end close to the drying position is lower than the end away from the drying position, and an opening is provided at the end of the guide groove away from the drying position to allow the guide wheel to pass through.

[0013] The present invention also provides a radioactive waste drying device, comprising a drying head, a transport device and the above-mentioned auxiliary docking device, wherein the drying head, the transport device and the auxiliary docking device are arranged in sequence from top to bottom, so that the drying head, the drying position passed by the transport device and the lifting mechanism of the auxiliary docking device are located in the same vertical direction, the transport device is used to limit the circumferential position of the drying barrel and support and transport the drying barrel, the lifting mechanism is used to rise to the drying position to lift the drying barrel in the drying position to dock with the drying head, and to descend and exit the drying position to allow the drying barrel that has completed drying to fall back to the transport device.

[0014] Furthermore, the transport device includes a track and a transfer trolley. There are two tracks, which are arranged parallel to each other and arranged to pass through the drying position. The transfer trolley is straddled and movably connected to the two tracks, and limits and supports the drying barrel in the circumferential direction. The lifting mechanism is arranged between the two tracks, and the width of the lifting mechanism is smaller than the spacing between the two tracks, so that after rising, the drying barrel at the drying position can be lifted through the gap between the two tracks to dock with the drying head, and after descending, the drying barrel can be placed on the transfer trolley.

[0015] Furthermore, protruding support columns are provided on both sides of the outer surface of the drying barrel, and the transfer trolley includes a frame and a support frame. The frame is a square frame structure, and the width of the empty area in the middle is not greater than the distance between the ends of the support columns on both sides of the drying barrel, so as to support the drying barrel, and the empty area allows the lifting mechanism to pass through. The support frame is a vertical groove shape, which is arranged on the top of the frame, and is used to cooperate with the support columns to achieve circumferential limitation of the drying barrel.

[0016] Compared with conventional automation equipment such as manipulators, the auxiliary docking device of the present invention does not use a clamping and moving method to achieve the relative movement between the drying barrel and the drying head, but is directly arranged below the drying head, and uses a bottom support method to achieve the lifting and lowering of the drying barrel, thereby completing the docking of the drying barrel and the drying head. This vertical docking operation method firstly greatly reduces the difficulty of operation, and only requires a lifting operation in a single direction, so it can be completed using a simple lifting mechanism and a driving mechanism, does not rely on human operation, and can be fully automated; secondly, precisely because the execution process is only completed in the vertical direction, the overall layout of the device can be below the drying position, and there will be no interference with the transport device and the mechanism frame where the drying head is located, and there is no need for identification and avoidance, so the docking process is simple and reasonable, and a reasonable drying production line can be formed to improve the efficiency of drying operations. In addition, since the drying barrel only performs lifting movements, and there are no operations such as grabbing and moving, it is effective to prevent the contents of the drying barrel from leaking and ensure safety.

[0017] This device can be used in the drying process of medium- and high-level radioactive solid wastes. It can lift and lower the transferred drying barrels, complete the docking and sealing of the drying head and the drying barrels, and form a drying chamber to dry the medium- and high-level radioactive solid wastes, so that the medium- and high-level radioactive solid wastes can meet the subsequent temporary storage and disposal requirements. This device can also be used for lifting and lowering of items in other low, medium, and high-level radioactive environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the auxiliary docking device in Example 1 of the present invention;

[0019] Figure 2 is a schematic diagram of the connection between the lifting mechanism and the driving mechanism in Example 1 of the present invention;

[0020] Figure 3 is a schematic structural diagram of the guide mechanism in Example 1 of the present invention;

[0021] Figure 4 is a schematic structural diagram of a radioactive waste drying device in Example 2 of the present invention;

[0022] Figure 5 This is a schematic structural diagram of a transfer vehicle holding a drying barrel of a radioactive waste drying device in Embodiment 2 of the present invention;

[0023] Figure 6 It is a schematic diagram of the structure of the transfer vehicle of the radioactive waste drying equipment in Example 2 of the present invention.

[0024] In the figure: 1. lifting mechanism; 11. upper platform; 12. lower platform; 13. cross connecting rod; 131. articulated wheel; 14. limit slot; 15. guide wheel; 16. transverse frame; 161. support wheel; 17. lifting shaft; 2. driving mechanism; 21. driving machine; 22. unlocking machine;

[0025] 23. Motor assembly; 231. Lifting ring; 232. Positioning pin; 233. Quick release clamp;

[0026] 234, second guide member; 24, first guide member; 25, connector; 26, connecting plate;

[0027] 3. Drying barrel; 31. Support column; 4. Transport device; 41. Track; 42. Transfer trolley; 421. Frame; 422. Support frame; 423. Driving member; 424. Pusher seat; 425. Pusher head; 426. Pusher groove; 5. Drying head; 6. Guide mechanism; 61. Vertical plate; 62. Guide groove; 621. Guide slope; 63. Flat track surface. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "upper", "lower" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0030] In the description of the present invention, the terms “first”, “second” and “third” are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connect", "set", "install", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0032] Example 1

[0033] The auxiliary docking device of this embodiment, such as Figure 1 to Figure 2 As shown, it includes a lifting mechanism 1 and a driving mechanism 2. The lifting mechanism 1 can be lifted and lowered in the vertical direction. The lifting mechanism 1 is arranged below the drying position passed by the transport device 4, so that the drying head 5 above the drying position, the drying position and the lifting mechanism 1 are located in the same vertical direction. The driving end of the driving mechanism 2 is connected to the lifting mechanism 1, which is used to drive the lifting mechanism 1 to rise to the drying position, so as to lift the drying barrel 3 which is in the drying position and is circumferentially limited and supported by the transport device 4 to dock with the drying head 5, and drive the lifting mechanism 1 to descend and exit the drying position, so that the drying barrel 3 which has completed drying falls back to the transport device 4.

[0034] Compared with conventional automation equipment such as manipulators, the auxiliary docking device of this embodiment does not use a clamping and moving method to achieve the relative movement between the drying barrel 3 and the drying head 5, but is directly arranged below the drying head 5, and uses a bottom support method to achieve the lifting and lowering of the drying barrel 3, thereby completing the docking of the drying barrel 3 and the drying head 5. This vertical docking operation method firstly greatly reduces the difficulty of operation, and only requires a lifting operation in a single direction, so it can be completed by using a simple lifting mechanism 1 and a driving mechanism 2, does not rely on human operation, and can be fully automated; secondly, it is precisely because the execution process is only completed in the vertical direction, the overall layout of the device can be below the drying position, and there will be no interference with the transport device 4 and the mechanism frame where the drying head 5 is located, and there is no need to identify or avoid it. Therefore, the docking process is simple and reasonable, and a reasonable drying production line can be formed to improve the efficiency of the drying operation. In addition, since the drying barrel 3 only performs lifting and lowering movements, and there is no operation such as grabbing and moving, it effectively avoids the leakage of the contents of the drying barrel 3 and ensures safety.

[0035] Due to the above characteristics, it is obvious that the auxiliary docking device of this embodiment can be applied to working conditions that are inconvenient for direct manual operation, such as radioactive environments. It can be seen that this embodiment is equivalent to providing a lifting device in a radioactive environment, which can be used in the drying process of medium- and high-level radioactive solid wastes, lifting and lowering the transported drying barrels, completing the docking and sealing of the drying head and the drying barrels to form a drying chamber, and achieving the drying of medium- and high-level radioactive solid wastes, so that the medium- and high-level radioactive solid wastes meet the subsequent temporary storage and disposal requirements. The device can also be used for the lifting and lowering operations of items in other low-, medium-, and high-level radioactive environments.

[0036] In this embodiment, the driving mechanism 2 includes a driving machine 21 and an unlocking machine 22. Both the driving machine 21 and the unlocking machine 22 are telescopic driving mechanisms, and are arranged in the same direction and connected in series, so that the driving machine 21 and the unlocking machine 22 can output their respective telescopic drives in this direction, that is, the driving machine 21 and the unlocking machine 22 can drive the lifting mechanism 1 to move up and down. The unlocking machine 22 is kept in the extended position under normal conditions, and the driving mechanism 2 drives the lifting mechanism 1 to move up and down through the extension and contraction of the driving machine 21. In the event of a fault, the driving mechanism 2 drives the lifting mechanism 1 to move down and out of the drying position through the contraction of the unlocking machine 22 to achieve unlocking.

[0037] That is, the driving machine 21 and the unlocking machine 22 both adopt telescopic driving mechanisms and are arranged in series along the set direction, so both can output extension drive or retraction drive in the set direction. When the driving mechanism 2 as a whole outputs extension drive in the set direction, the lifting mechanism 1 will rise, and when the driving mechanism 2 as a whole outputs retraction drive in the set direction, the lifting mechanism 1 will fall. Since the unlocking machine 22 is kept in the extended position under normal conditions, the unlocking machine 2 in the set direction is equivalent to a fixed component such as a connecting rod, and does not play a driving role. Only when there is a fault (such as when the driving machine 21 cannot be retracted and the drying barrel 3 cannot be safely placed on the transport device 4), the unlocking machine 22 will retract, so that the driving mechanism 2 as a whole can output retraction drive in the set direction, so that the drying barrel 3 can be safely placed on the transport device 4, which is convenient for transporting the drying barrel 3, that is, to achieve the source removal under accident conditions, so as to facilitate the remote maintenance, replacement and installation of the auxiliary docking device.

[0038] In this embodiment, the unlocking machine 22 is connected between the output shaft of the driving machine 21 and the lifting mechanism 1, and the output shaft of the driving machine 21 and the output shaft of the unlocking machine 22 are butt-connected, that is, the driving machine 21 and the unlocking machine 22 are connected head to head. This arrangement allows the motor of the driving machine 21, which is a wearing part, to be placed at the rear position away from the lifting mechanism 1 and closer to the manipulator on the wall of the hot chamber, which is convenient for the manipulator to inspect and maintain the motor.

[0039] In this embodiment, the driving machine 21 and the unlocking machine 22 are both screw elevators. The screw elevator realizes axial telescopic movement through the rotation of the screw rod. This telescopic process is slow and stable, and there will be no sudden changes in the telescopic speed, which also avoids the sudden changes in the lifting speed of the lifting mechanism 1, thereby ensuring that the contents of the drying barrel 3 will not spill. The driving machine 21 and the unlocking machine 22 are connected head to head as follows: Figure 1 and 2 As shown, the lead screws of the driving machine 21 and the unlocking machine 22 are respectively connected to their respective connecting heads 25 through bearings (due to the presence of bearings, the rotation of one lead screw will not be transmitted to another lead screw through the connecting head), and the connecting heads 25 of the driving machine 21 and the unlocking machine 22 are further connected through a connecting plate 26 and fixed by a pin shaft.

[0040] In this embodiment, the driving mechanism 2 also includes a motor assembly 23 and a first guide member 24. The motor assembly 23 serves as a first integral module and can be detachably connected to the driving machine 21, thereby providing energy for the extension and retraction of the driving machine 21. The motor assembly 23 serves as a vulnerable component and is installed on the driving machine 21 in the form of an integral module. The modular design of vulnerable parts effectively improves the maintainability of the equipment and meets the requirements for long-distance maintenance, replacement and installation of vulnerable components in the hot chamber.

[0041] Specifically, the motor assembly 23 includes a servo motor, a lifting ring 231, a flange, a positioning pin 232, a quick-release clamp 233, and a second guide member 234. The servo motor is pre-installed in the mounting frame (of the motor assembly 23) to form an integral motor assembly 23, and a lifting ring 231 is provided on the outside for lifting the motor assembly 23 as a whole during inspection, maintenance and replacement; the motor assembly 23 and the drive motor 21 are butted against each other through flange surfaces (that is, the drive motor 21 is also provided with a flange, and the motor assembly 23 is vertically installed with the flange facing downward, and the flange surfaces of the two are butted against each other), and then positioned by the positioning pin 232, and then fixed by locking with the quick-release clamp 233. A second guide member 234 (also referred to as a guide sleeve) is provided on the quick-release clamp 233 to facilitate long-distance and rapid positioning of the electric wrench. The positioning pin 233, the quick-release clamp 234, the guide sleeve and the lifting ring 231 cooperate to realize rapid long-distance disassembly and assembly of the motor assembly 23.

[0042] The first guide member 24 is connected to the unlocking machine 22 and is used to cooperate with an external electric operating device to provide power for the contraction of the unlocking machine 22. It can be seen that whether the motor assembly 23 fails to provide energy for extension or the drive machine 21 fails to retract, the unlocking machine 22 can be retracted through external operation. The first guide member 24 (also called a guide sleeve) can adopt a structure that cooperates with an electric wrench or other equipment, which will not be described in detail here.

[0043] This embodiment adopts two screw lifts to be connected "head to head". In the event of an accident (failure of the motor assembly 23 or the drive motor 21), it is only necessary to remotely operate the electric wrench to drive the screw of the unlocking machine 22 to retract, thereby driving the upper platform 11 to descend, so that the jacking device can be smoothly reset, and the drying barrel 3 can be dropped onto the transfer trolley 42 above the jacking device. The transfer trolley 42 transports the drying barrel 3 and the contents away, thereby realizing the source removal operation of the jacking device, and then completing the subsequent remote maintenance and replacement operations.

[0044] In this embodiment, the lifting mechanism 1 includes an upper platform 11, a lower platform 12 and a cross link 13. The cross link 13 is a scissor-shaped structure formed by crossing rods and hinged in the middle. The upper and lower ends of one side of the cross link 13 are respectively hingedly connected to the upper platform 11 and the lower platform 12, and the upper and lower ends of the other side are movable ends, which are respectively movably connected to the upper platform 11 and the lower platform 12 in the horizontal direction. The driving mechanism 2 is horizontally arranged on one side of the lifting mechanism 1 where the movable end of the cross link 13 is located, and the driving end is connected to the movable end of the cross link 13, and the cross link 13 is driven by horizontal telescopic driving to drive the upper platform 11 to rise and fall. The driving mechanism 2 is horizontally arranged on one side, which is convenient for inspection and maintenance when the line fails, and also avoids occupying too much vertical space and avoiding too many mechanical structures in the drying position.

[0045] In this embodiment, the lower platform 12 includes two vertical plates arranged in parallel. The plates are in the shape of long strips and are arranged in the horizontal direction. The cross-linking rods 13 and the upper platform 11 are both arranged at the head position of the lower platform 12. The driving mechanism 2 is installed at the rest of the lower platform 12. The driving mechanism 2 is specifically clamped between the two plates of the lower platform 12.

[0046] In this embodiment, horizontal limit grooves 14 are provided on the upper platform 11 and the lower platform 12 , and articulated wheels 131 are provided at the movable ends of the cross connecting rods 13 . The articulated wheels 131 are arranged in the limit grooves 14 and move along the limit grooves 14 .

[0047] Specifically, the lifting mechanism 1 also includes a transverse frame 16, and the output shaft ends of the driving machine 21 and the unlocking machine 22 are butt-connected. The two are horizontally arranged in the strip gap between the two plates of the lower platform 12. The outer shell of the driving machine 21 is fixedly connected between the two plates at the rear of the lower platform 12. The outer shell of the unlocking machine 22 is arranged in the transverse frame 16. The transverse frame 16 is connected to the movable end of the cross-link 13. A support wheel 161 is provided on the outer side of the transverse frame 16. The lower platform 12 is also provided with a limit groove 14 at the corresponding position of the support wheel 161. The support wheel 161 is arranged in the limit groove 14 and moves along the limit groove 14.

[0048] The limit groove 14 serves as a horizontal track for the articulated wheel 131 and the support wheel 161 , and its length defines the horizontal position of the articulated wheel 131 and the support wheel 161 , and also defines the lowest position of the upper platform 11 . The length of the limit groove 14 can be selected according to specific operating conditions.

[0049] In this embodiment, the auxiliary docking device further includes a guide mechanism 6, which is fixedly mounted on the ground (or the plane of the operating platform, etc.) below the transport device 4, and the lifting mechanism 1 and the driving mechanism 2 are connected to form a second integral module, which is detachably embedded in the guide mechanism 6. By providing the guide mechanism 6, the second integral module can be stably mounted on the ground to facilitate the jacking function, and can also be disassembled as a whole for inspection and maintenance, meeting the requirements of long-distance inspection, replacement and installation of vulnerable components in the hot room.

[0050] Specifically, a hoisting shaft 17 is provided at the rear end of the lower platform 12 of the lifting mechanism 1 , and the second integral module formed by the lifting mechanism 1 and the driving mechanism 2 can be hoisted and transferred as a whole through the hoisting shaft 17 .

[0051] In this embodiment, Figure 1 and Figure 3 As shown, the guide mechanism 6 includes two vertical plates 61 which are parallel to each other and vertically arranged, and guide grooves 62 are provided on the opposite inner sides of the two vertical plates 61. The second integral module is arranged between the two vertical plates 61. A guide wheel 15 is provided at the end of the lifting mechanism 1 close to the drying position. The guide wheel 15 is specifically arranged at the head ends of the two plates of the lower platform 12. The guide wheel 15 is slidably arranged in the guide groove 62. The guide groove 62 extends in the horizontal direction and is arranged obliquely. The end close to the drying position is lower than the end away from the drying position, and an opening is provided at the end of the guide groove 62 away from the drying position to allow the guide wheel 15 to pass through. The end of the guide groove 62 close to the drying position is set as an arc-shaped closed end as the end point of the moving stroke of the guide wheel 15.

[0052] In this embodiment, the end close to the drying position is the head, and the end away from the drying position is the tail (including the situation before this paragraph). When the second integral module is connected with the guide mechanism 6, the lower platform 12 is first moved as a whole between the two vertical plates 61, and the guide wheel 15 at the head enters the guide groove 62 through the opening at the tail of the guide groove 62, and then slides down and moves forward along the inclined direction of the guide groove 62 under the influence of gravity until it moves to the head of the guide groove 62, thereby completing the connection. Similarly, when disassembling, the second integral module is lifted by the lifting shaft 17, and the guide wheel 15 moves along the guide groove 62 until it escapes from the opening.

[0053] In this embodiment, since the second integral module is arranged directly below the drying head, Figure 4As shown, when it is directly lifted vertically, it will inevitably interfere with the drying head and collide, making it impossible to complete the long-distance maintenance operation. However, by setting a guide mechanism 6 with an oblique groove, this embodiment can avoid the need to set a complex movement of first horizontal movement and then vertical lifting during the inspection and maintenance operation. The lifting device only hangs the tail of the second integral module, and then slowly lifts it upward along the inclined guide groove to avoid collision with the drying head directly above it. In addition, the guide mechanism 6 is fixedly installed. When reinstalling, the second integral module only needs to be slid to the innermost part along the guide groove 62 to complete the reinstallation positioning, and no position adjustment is required.

[0054] In this embodiment, the vertical plate 61 is specifically a rectangular trapezoidal strip-shaped structure with a lower head and a higher tail. The bottom of the inner surface of the two vertical plates 61 on the opposite sides is also provided with a flat rail surface 63 for supporting the second integral module, so that the cross section forms an L-shaped structure. The guide groove 62 is bent vertically upward at the tail end of the vertical plate 61, and an opening is formed at the top, thereby forming a C-shaped groove. A guide slope 621 is provided at the opening, and the guide slope 621 facilitates the guide wheel 15 to enter the opening. The C-shaped groove, the guide slope 621 cooperate with the guide wheel 15 and the lifting shaft 17 of the lifting mechanism 1 to realize the overall long-distance disassembly and assembly of the second integral module.

[0055] This embodiment is equivalent to providing a lifting device for use in a radioactive environment. The drying barrel 3 and the drying head 5 are connected by lifting. It can be used in the field of nuclear industry technology. Through reasonable layout and structural design, it can achieve source removal under accident conditions, as well as long-distance maintenance, replacement and installation of vulnerable components. The front part of the device adopts a scissor-type lifting platform structure, the head is a fixed hinge point, and the rear is a drive, which is used for the lifting of the drying barrel. The drive specifically adopts a spiral elevator; two spiral elevators are provided, one is an unlocking machine 22, and the other is a driving machine 21, and the heads of the two machines are connected. The vertical plate 61 of the guide mechanism 6 is provided with two pieces, the cross section is L-shaped, and the side is a right-angled trapezoid. The guide groove 62 is arranged with an inclined groove length direction for easy guidance.

[0056] Specifically, the device mainly includes a lifting mechanism 1 , a driving mechanism 2 , and a guiding mechanism 6 .

[0057] The lifting mechanism 1 mainly includes an upper platform 11, a cross link 13, a lower platform 12, a guide wheel 15, a transverse frame 16, and a lifting shaft 17. The driving mechanism 2 mainly includes an unlocking machine 22, a motor assembly 23, and a driving machine 21; the upper platform 11 and the lower platform 12 form an "X"-shaped articulated lifting mechanism through the cross link 13; the unlocking machine 22 and the driving machine 21 are connected at the head.

[0058] During normal operation, the screw of the unlocking machine 22 remains in an extended state. In an accident state (failure of the motor assembly 12 or the driving machine 21), the screw of the unlocking machine 22 is driven to retract by remotely operating an electric wrench, driving the upper platform 11 to descend, so that the drying barrel 3 falls smoothly to the transfer trolley 42 above, and the transfer trolley 42 transports the drying barrel 3 along the track 41 to achieve the source removal operation; the driving machine 21 is horizontally placed and fixed at the tail of the lower platform 12, and the upper part is the motor assembly 23, which drives the driving machine 21 to perform horizontal push-pull actions, and then drives the cross-link 13 horizontally, so that the cross-link 13 moves and is converted into a vertical upward or downward movement of the upper platform 11, and the lower platform 12 remains stationary; the front end of the transverse frame 16 is hinged to the bottom movable end of the cross-link 13 to form a front end articulated wheel 131, and a support wheel 161 is arranged in the middle of each side of the transverse frame 16, and the articulated wheel 131 and the support wheel 161 can move in the horizontal track.

[0059] Guide wheels 15 are installed on both sides of the lower platform head 12, and the guide wheels 15 slide in the guide groove 62 of the guide mechanism 6, and a lifting shaft 17 is provided on the outer side of the tail. The lower part of the inner side of the guide groove 62 is a flat rail surface 63, and the outer side of the vertical plate 61 of the guide groove 62 has a high tail (the part far away from the drying position is the tail) and a low head (the part close to the drying position is the head of the tail), which cooperates with the guide wheels 15 and the lifting shaft 17 to realize the overall long-distance disassembly and assembly of the second integral module.

[0060] The motor assembly 23 has a lifting ring 231 on the outside, and the mounting seat of the motor assembly 23 is provided with a positioning pin 232 and a quick release fixture 233. The quick release fixture 233 is provided with a guide sleeve. When the motor assembly 23 fails, the guide sleeve, the positioning pin 232, the quick release fixture 233 and the lifting fixture cooperate to realize the independent remote and rapid disassembly and assembly of the motor assembly 23. Combined with the modular design of the second integral module, it can be seen that the wearing parts of the device are all modularly designed, which effectively improves the maintainability of the equipment and meets the requirements of remote maintenance, replacement and installation of wearing components in the hot room.

[0061] Before the medium and high level radioactive solid waste is dried, the upper platform 11 of the lifting mechanism 1 is in the following position: Figure 1The initial lowest position shown. When the drying barrel 3 filled with wet materials is transported to the drying position (i.e., directly above the lifting mechanism 1) by the transfer trolley 42 along the track 41, the motor assembly 23 starts, driving the screw of the driving machine 21 to push the transverse frame 16 forward, and the transverse frame 16 drives the cross link 13 through the articulated wheel 131, so that the cross link 13 moves and is converted into a vertical ascending movement of the upper platform 11, thereby realizing the vertical lifting operation of the drying barrel 3. After the drying is completed, the motor assembly 23 drives the screw of the driving machine 22 to contract and drags the transverse frame 16 backward, and the transverse frame 16 drives the cross link 13 through the articulated wheel 131, so that the cross link 13 moves and is converted into a vertical descending movement of the upper platform 11, thereby realizing the vertical descending operation of the drying barrel 3. During the descent of the lifting mechanism 1, if the motor assembly 23 or the driving machine 21 fails, the screw of the unlocking machine 22 can be driven to retract through the guide sleeve (first guide member 24) by remotely operating the electric wrench, driving the upper platform 11 to descend, so that the lifting mechanism 1 can be smoothly reset under load, so that the drying barrel 3 and the contents fall to the transfer trolley 42 above, and the transfer trolley 42 transports the drying barrel 3 and the contents along the track 41 to achieve the source removal operation of the device. Then, the remote lifting device cooperates with the lifting shaft 17 to lift the second integral module to the maintenance room to complete the maintenance and replacement of the device; during the lifting process, the guide wheel 15 slowly rolls along the guide groove 62 to the guide slope 621, and disengages from the guide groove 62 at the guide slope 621, so that the second integral module is separated from the guide mechanism 6, and the remote disassembly and assembly of the device is achieved.

[0062] Example 2

[0063] The radioactive waste drying equipment of this embodiment is as follows: Figure 4 As shown, it includes a drying head 5, a transport device 4 and the auxiliary docking device in Example 1. The drying head 5, the transport device 4 and the auxiliary docking device are arranged in sequence from top to bottom, so that the drying position passed by the drying head 5 and the transport device 4 and the lifting mechanism 1 of the auxiliary docking device are located in the same vertical direction. The transport device 4 is used to limit the circumferential position of the drying barrel 3 and support and transport the drying barrel 3. The lifting mechanism 1 is used to rise to the drying position to lift the drying barrel 3 in the drying position to dock with the drying head 5, and to descend to exit the drying position so that the drying barrel 3 that has completed drying falls back to the transport device 4.

[0064] In this embodiment, the transport device 4 includes a track 41 and a transfer trolley 42. There are two tracks 41. The two tracks 41 are arranged parallel to each other and arranged to pass through the drying position. The transfer trolley 42 is straddled and movably connected to the two tracks 41, and circumferentially limits and supports the drying barrel 3. The lifting mechanism 1 is arranged between the two tracks 41, and the width of the lifting mechanism 1 is smaller than the spacing between the two tracks 41, so that after rising, it can pass through the gap between the two tracks 41 to lift the drying barrel 3 at the drying position to dock with the drying head 5, and after descending, the drying barrel 3 can be placed on the transfer trolley 42.

[0065] Specifically, Figure 5 and Figure 6 As shown, protruding support columns 31 are provided on both sides of the outer surface of the drying barrel 3, and the transfer trolley 42 includes a frame 421 and a support frame 422. The frame 421 is a square frame structure, and the width of the vacant area in the middle is not greater than the distance between the ends of the support columns 31 on both sides of the drying barrel 3, so as to support the drying barrel 3, and the vacant area allows the lifting mechanism 1 to pass through. In this way, the transfer trolley 42 can support the drying barrel 3 without affecting the lifting of the drying barrel 3 by the lifting mechanism 1, that is, it only limits the falling of the drying barrel 3 in the vertical direction, and does not limit the rising of the drying barrel 3, so as to facilitate its docking with the drying head.

[0066] The support frame 422 is in the shape of a vertical groove and is arranged on the top of the frame 421. It is used to cooperate with the support column 31 to achieve circumferential limitation of the drying barrel 3. When the drying barrel 3 falls onto the transfer trolley 42, the support column 31 will fall into the corresponding support frame 422 groove, thereby limiting the rotation of the drying barrel 3 and achieving circumferential limitation.

[0067] The transfer trolley 42 also includes a driving member 423, which is arranged on one side of the rear end of the frame 421. The frame 421 of the transfer trolley 42 is a "C"-shaped frame welded by rectangular steel pipes and steel plates, with an opening toward the driving member 423. The bottom of the frame 421 is hollow to avoid the operating position of the lifting mechanism 1, so that the lifting mechanism 1 can directly contact the drying barrel 3 to complete the lifting operation of the drying barrel 3.

[0068] A push head seat 424 is also provided on the frame 421, and a push head 425 and a push groove 426 are provided at the driving end of the driving member 423. The push head 425 of the driving member 423 cooperates with the push head seat 424. Under the drive of the transfer trolley driving member 423, the push head 425 slides horizontally in the push groove 426 and drives the transfer trolley to run along the transfer track 41.

[0069] In this embodiment, the drying head 5 is specifically a component supported by a four-leg support structure. In other embodiments, other forms of support structures can also be selected according to the equipment layout.

[0070] It is understandable that the above specific implementations are merely exemplary, and under the above technical guidance of the present invention, those skilled in the art may make various improvements and modifications based on the above embodiments, and these improvements or modifications are also within the protection scope of the present invention.

Claims

1. An auxiliary docking device, characterized in that: It comprises a lifting mechanism (1) and a driving mechanism (2). The lifting mechanism (1) can be lifted and lowered in a vertical direction. The lifting mechanism (1) is arranged below a drying position through which the transport device (4) passes, so that the drying head (5) above the drying position, the drying position and the lifting mechanism (1) are located in the same vertical direction. The driving end of the driving mechanism (2) is connected to the lifting mechanism (1) and is used to drive the lifting mechanism (1) to rise to a drying position, so as to lift the drying barrel (3) which is in the drying position and is circumferentially limited and supported by the transport device (4) to abut against the drying head (5). And, the lifting mechanism (1) is driven to descend and exit the drying position, so that the drying barrel (3) that has completed drying descends and falls back to the transport device (4).

2. The auxiliary docking device according to claim 1, characterized in that: The driving mechanism (2) comprises a driving machine (21) and an unlocking machine (22). The driving machine (21) and the unlocking machine (22) are both telescopic driving mechanisms, and are arranged in the same direction and connected in series, so that the driving machine (21) and the unlocking machine (22) can output their respective telescopic driving in the direction. The unlocking machine (22) is normally kept in the extended position. The driving mechanism (2) drives the lifting mechanism (1) to rise and fall by the extension and contraction of the driving machine (21); in the event of a failure, the driving mechanism (2) drives the lifting mechanism (1) to descend and exit the drying position by the contraction of the unlocking machine (22), thereby achieving unlocking.

3. The auxiliary docking device according to claim 2, characterized in that: The unlocking machine (22) is connected between the output shaft of the driving machine (21) and the lifting mechanism (1). The output shaft of the driving machine (21) and the output shaft of the unlocking machine (22) are butt-connected.

4. The auxiliary docking device according to claim 3, characterized in that: The driving machine (21) and the unlocking machine (22) are both screw elevators.

5. The auxiliary docking device according to claim 2, characterized in that: The driving mechanism (2) further comprises a motor assembly (23) and a first guide member (24). The motor assembly (23) is a first integral module and is detachably connected to the driving machine (21), thereby providing energy for the extension and retraction of the driving machine (21); The first guide member (24) is connected to the unlocking machine (22) and is used to cooperate with an external electric operating device to provide power for the contraction of the unlocking machine (22).

6. The auxiliary docking device according to claim 1, characterized in that: The lifting mechanism (1) comprises an upper platform (11), a lower platform (12) and a cross link (13). The cross link (13) is a scissor-like structure formed by crossing rods and hinged in the middle. The upper and lower ends of one side of the cross link (13) are respectively hingedly connected to the upper platform (11) and the lower platform (12), and the upper and lower ends of the other side serve as movable ends and are respectively movably connected to the upper platform (11) and the lower platform (12) in the horizontal direction. The driving mechanism (2) is horizontally arranged on one side of the lifting mechanism (1) where the movable end of the cross link (13) is located, and the driving end is connected to the movable end of the cross link (13), and drives the upper platform (11) to rise and fall by horizontally telescoping the cross link (13).

7. The auxiliary docking device according to claim 6, characterized in that: The upper platform (11) and the lower platform (12) are both provided with horizontal limiting grooves (14). The movable ends of the cross connecting rods (13) are each provided with an articulated wheel (131), and the articulated wheel (131) is arranged in the limiting groove (14) and moves along the limiting groove (14).

8. The auxiliary docking device according to claim 1, characterized in that: It also includes a guide mechanism (6), which is fixedly installed on the ground below the transport device (4). The lifting mechanism (1) and the driving mechanism (2) are connected to form a second integral module, and the second integral module is detachably embedded and connected in the guide mechanism (6).

9. The auxiliary docking device according to claim 8, characterized in that: The guide mechanism (6) comprises two vertical plates (61) which are parallel to each other and arranged vertically. The inner sides of the two vertical plates (61) facing each other are both provided with guide grooves (62). The second integral module is arranged between two vertical plates (61). The lifting mechanism (1) is provided with a guide wheel (15) at one end close to the drying position. The guide wheel (15) is slidably arranged in the guide groove (62). The guide groove (62) extends in the horizontal direction and is arranged obliquely, with one end close to the drying position being lower than the end away from the drying position, and an opening is provided at the end of the guide groove (62) away from the drying position to allow the guide wheel (15) to pass through.

10. A radioactive waste drying device, characterized in that: The invention comprises a drying head (5), a transport device (4) and an auxiliary docking device according to any one of claims 1 to 9, The drying head (5), the transport device (4) and the auxiliary docking device are arranged in sequence from top to bottom, so that the drying head (5), the drying position passed by the transport device (4) and the lifting mechanism (1) of the auxiliary docking device are located in the same vertical direction. The transport device (4) is used to limit the circumferential position of the drying barrel (3) and to support and transport the drying barrel (3). The lifting mechanism (1) is used to rise to the drying position to lift the drying barrel (3) in the drying position to dock with the drying head (5), and to descend to exit the drying position to allow the drying barrel (3) that has completed drying to fall back to the transport device (4).

11. The radioactive waste drying equipment according to claim 10, characterized in that: The transport device (4) comprises a track (41) and a transfer vehicle (42). The rails (41) are provided with two rails, which are arranged parallel to each other and arranged to pass through the drying position. The transfer trolley (42) is straddled and movably connected to the two rails (41), and limits and supports the drying barrel (3) in the circumferential direction. The lifting mechanism (1) is arranged between the two rails (41), and the width of the lifting mechanism (1) is smaller than the distance between the two rails (41), so that after rising, the lifting mechanism (1) can pass through the gap between the two rails (41) to lift the drying barrel (3) at the drying position to dock with the drying head (5), and after descending, the drying barrel (3) can be placed on the transfer trolley (42).

12. The radioactive waste drying equipment according to claim 11, characterized in that: The drying barrel (3) is provided with protruding support columns (31) on both sides of the outer surface. The transfer vehicle (42) comprises a vehicle frame (421) and a support frame (422). The frame (421) is in a square frame structure, and the width of the vacant area in the middle is not greater than the distance between the ends of the support columns (31) on both sides of the drying barrel (3), so as to support the drying barrel (3), and the vacant area allows the lifting mechanism (1) to pass through. The support frame (422) is in the shape of a vertical groove and is disposed on the top of the vehicle frame (421) and is used to cooperate with the support column (31) to achieve circumferential positioning of the drying barrel (3).

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