High-level radioactive solid waste overpressure machine mold transmission device, replacement method and equipment

Abstract

The invention discloses a high-level solid waste overpressure machine die transmission device which comprises a pull rod, a frame, a locking nut and a steering mechanism, a rectangular through hole is formed in a die, a T-shaped head is arranged at one end of the pull rod, the length of the T-shaped head is larger than the radial width of the rectangular through hole and smaller than the radial length of the rectangular through hole, and the pull rod supports the die through the T-shaped head. The other end of the pull rod penetrates through the frame, the end, penetrating out of the frame, of the pull rod is fastened to the frame through a locking nut, and the steering mechanism is connected with the pull rod and clamped between the locking nut and the frame so as to be pressed to fix and limit rotation of the pull rod in the axial direction when the locking nut is screwed. And when the locking nut is unscrewed, the pull rod can be driven to drive the T-shaped head to rotate around the axial direction so as to disassemble and assemble the mold. According to the device, under the condition that the transmission function is not affected, the mold is rapidly disassembled and assembled ingeniously through a simple structure, and remote operation and maintenance are facilitated. The invention further provides a high-level solid waste overpressure machine mold replacement method and waste treatment equipment.

Description

Technical Field

[0001] The present invention particularly relates to a transmission device, a replacement method and equipment for a high-level radioactive solid waste hypercompressor die. Background Art

[0002] Limited by the radioactive environment, the driving device of the high-level radioactive solid waste hypercompressor is generally located outside the hot cell, while the die is located inside the hot cell, and the transmission is realized by the transmission device passing through the hot cell shielding plate. After long-term operation, stress pitting and wear will occur on the die, resulting in the size of the compressed material not meeting the requirements and difficult demolding. Therefore, the die needs to be replaced. Since the die is contaminated by direct contact with radioactive waste during operation, maintenance personnel cannot directly enter the hot cell for replacement. Therefore, it is necessary to consider remotely operating and replacing the die located inside the hot cell outside the hot cell to ensure the safety of maintenance personnel. However, since the transmission device needs to ensure connection and transmission, the existing connection structure is relatively complex. When using equipment such as a manipulator inside the hot cell for die replacement, there are problems such as difficult operation and long maintenance time. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a transmission device for a high-level radioactive solid waste hypercompressor die, which can cleverly realize the rapid disassembly and assembly of the die through a simple structure without affecting the transmission function and is convenient for remote operation and maintenance, aiming at the above deficiencies in the prior art. The present invention also provides a method for replacing a high-level radioactive solid waste hypercompressor die and waste treatment equipment.

[0004] The present invention provides a transmission device for a high-level radioactive solid waste hypercompressor die, including a pull rod, a frame, a locking nut and a steering mechanism. A rectangular through hole is provided on the die. One end of the pull rod is provided with a T-shaped head, and the length of the head of the T-shaped head is greater than the radial width of the rectangular through hole and less than the radial length of the rectangular through hole to form an orientable plug-in structure with the rectangular through hole. The pull rod lifts the die through the T-shaped head penetrating the rectangular through hole. The frame is connected to the driving device. The other end of the pull rod penetrates through the frame, and the end portion penetrating through the frame is fastened to the frame by a locking nut to transmit the driving force of the driving device along the axial direction of the pull rod to the die. The steering mechanism is connected to the pull rod and is clamped between the locking nut and the frame to be fixed under pressure to form a rotational constraint to limit the axial rotation of the pull rod when the locking nut is tightened, and to be able to drive the pull rod to drive the T-shaped head to rotate axially to reach the orientable plug-in position with the rectangular through hole to realize the disassembly and assembly of the die when the locking nut is loosened.

[0005] Further, the steering mechanism includes a washer and a steering component. The end of the pull rod passing through the frame includes a threaded section and a special-shaped shaft section. The threaded section is arranged on the side of the special-shaped shaft section away from the frame and is used to lock and secure a lock nut through threaded connection. The washer is provided with a special-shaped hole consistent with the cross-section of the special-shaped shaft section and is sleeved on the special-shaped shaft section through the special-shaped hole. The steering component is used to drive the washer to rotate, so as to drive the pull rod to rotate synchronously.

[0006] Further, the thickness of the washer is greater than the length of the special-shaped shaft section.

[0007] Further, the body of the pull rod is the second shaft section, and the shaft section passing through the frame is the first shaft section. The diameter of the first shaft section is smaller than that of the second shaft section. When the lock nut is tightened to press and fix the washer, the shoulder between the first shaft section and the second shaft section on the pull rod abuts against the surface of the frame facing the mold side.

[0008] Further, the steering component includes a sliding seat, a sliding shaft, a lead screw and a connecting rod. The sliding shaft and the lead screw are both perpendicular to the pull rod and parallel to each other. The sliding shaft is fixedly connected to the frame, and the lead screw is rotatably connected to the frame. One end of the connecting rod is connected to the washer, and the other end is hinged to the sliding seat. The sliding seat is sleeved on the sliding shaft and the lead screw, so that when the lead screw rotates, it drives the connecting rod to pull the washer to rotate along the sliding of the sliding seat.

[0009] Further, the body of the pull rod is the second shaft section, and the diameter of the second shaft section is greater than the radial width of the rectangular through-hole. A third shaft section is also provided between the second shaft section and the T-shaped head and passes through the rectangular through-hole through the third shaft section. The diameter of the third shaft section is smaller than the radial width of the rectangular through-hole, and the length of the third shaft section is greater than the axial depth of the rectangular through-hole, so that there is an axial relative movement margin between the pull rod and the mold, so as to facilitate the T-shaped head to rotate around the axis when the lock nut is loosened.

[0010] Further, the two ends of the mold are respectively a connection end and a pressing end. A connection disk protruding radially outwards is provided at the connection end, and there is a set spacing between the surface of the connection disk facing the pressing end and the pressing end. The rectangular through-hole is axially opened on the connection disk of the mold, so that after the pressing end of the mold is supported, the pull rod can drive the T-shaped head to continue to move axially towards the pressing end, so as to facilitate the T-shaped head to rotate around the axis when the lock nut is loosened.

[0011] Further, the pull rod drives the mold to move under the drive of the driving device, and after the pressing end of the mold is supported, it continues to move axially, so that the shoulder between the second shaft section and the third shaft section abuts against the surface of the connection end of the mold to further press the pressing end.

[0012] Furthermore, the interconnected pull rods, locking nuts and steering mechanisms serve as a group of transmission modules. There are multiple groups of transmission modules, and each group of transmission modules is connected in parallel between the frame and the mold and is evenly distributed around the axial direction of the mold.

[0013] The present invention also provides a method for replacing a mold of a high-level solid waste super press, wherein the transmission device used in the mold is the above-mentioned high-level solid waste super press mold transmission device. The method includes a disassembly step and an installation step, wherein the disassembly step includes:

[0014] Loosen the lock nut;

[0015] The steering mechanism is operated to drive the pull rod to drive the T-shaped head to rotate axially to a position where it can be orientably plugged into the rectangular through hole;

[0016] The driving device drives the pull rod to drive the T-shaped head to move axially until it is out of the rectangular through hole of the mold to realize mold disassembly;

[0017] The installation steps include:

[0018] The driving device drives the pull rod to drive the T-head to move axially until it penetrates the rectangular through hole of the mold;

[0019] The steering mechanism is operated to drive the pull rod to drive the T-shaped head to rotate axially until it is offset from the directionally plug-in position with the rectangular through hole;

[0020] Tighten the lock nut to install the mold.

[0021] The present invention also provides a high-level solid waste treatment device, including a drive device, a mold, a hot chamber, a maintenance cart, and the above-mentioned high-level solid waste super press mold transmission device, wherein the drive device and the mold are respectively arranged on the outside and inside of the hot chamber shielding plate. The high-level solid waste super press mold transmission device passes through the shielding plate and is connected between the drive device and the mold, and is used to drive the mold to treat high-level solid waste under the drive of the drive device. The maintenance cart is arranged inside the hot chamber and is used to transport the mold when replacing the mold.

[0022] The high-level solid waste super press mold transmission device of the present invention realizes driving force transmission through a pull rod. The pull rod adopts a T-shaped head and a rectangular through hole of the mold to realize directional plug-in. The installation and disassembly of the mold can be achieved only by the rotation and axial movement of the T-shaped head, and this process can be completely realized by the operation at the other end of the pull rod. Compared with the traditional bolt connection method, this connection method, when used for the high-level solid waste super press mold, not only ensures the connection reliability, but also avoids tedious operation steps inside the hot chamber. Instead, the main disassembly and assembly operations are transferred to outside the hot chamber, which greatly reduces the operation accuracy requirements for remote operation equipment.

[0023] More importantly, the locking nut therein is used to fasten the pull rod and the frame, ensuring stable transmission of the driving force. The steering mechanism that controls the rotation of the pull rod can be locked and fixed by the locking nut that fixes the pull rod itself, directly converting the tightening action of the locking nut into the axial pressing force on the steering mechanism to form a rigid rotational constraint. This structural arrangement ingeniously integrates the locking and anti-rotation functions into a single operation: when the locking nut is tightened, the steering mechanism is pressed against the frame and fits tightly, completely restricting the circumferential freedom of the pull rod through friction to ensure pure axial transmission of the driving force; when the locking nut is loosened, the steering mechanism is released from the constraint, and it can actively drive the pull rod to drive the T-shaped head to accurately rotate to the disassembly and assembly angle. It can be seen that this combination method breaks through the structural limitations of the traditional need for independent locking and steering control. It not only eliminates redundant components such as additional anti-rotation pins and key grooves, but also synchronously completes two core functions of "power transmission locking" and "steering freedom release" through the conventional operation of the locking nut, greatly simplifying the disassembly and assembly process of the mold in a radioactive environment, and avoiding the risk of positioning deviation introduced by multi-step operations and complex structures. It is especially suitable for remote low-precision operation scenarios outside the hot cell, significantly improving the safety of facility maintenance. Description of the Drawings

[0024] Figure 1 is a three-dimensional structural schematic diagram of the mold transmission device of the high-level radioactive solid waste ultra-press in Embodiment 1 of the present invention;

[0025] Figure 2 is a planar structural schematic diagram of the mold transmission device of the high-level radioactive solid waste ultra-press in Embodiment 1 of the present invention;

[0026] Figure 3 is a connection structural schematic diagram of the pull rod and the frame in the mold transmission device of the high-level radioactive solid waste ultra-press in Embodiment 1 of the present invention;

[0027] Figure 4 is Figure 3 the sectional view taken along line A-A in

[0028] Figure 5 is a connection structural schematic diagram of the pull rod and the mold in the mold transmission device of the high-level radioactive solid waste ultra-press in Embodiment 1 of the present invention;

[0029] Figure 6 is Figure 5 the sectional view taken along line B-B in

[0030] Figure 7 is a structural schematic diagram of the pull rod in the mold transmission device of the high-level radioactive solid waste ultra-press in Embodiment 1 of the present invention;

[0031] Figure 8 is a structural schematic diagram of the washer in the mold transmission device of the high-level radioactive solid waste ultra-press in Embodiment 1 of the present invention;

[0032] Figure 9 It is a schematic structural diagram of the steering component of the high-level radioactive solid waste superpress mold transmission device in Embodiment 1 of the present invention.

[0033] In the figure: 1. Mold; 11. Rectangular through hole; 12. Connecting plate; 2. Tie rod; 21. T-shaped head; 22. Threaded section; 23. Special-shaped shaft section; 24. First shaft section; 25. Second shaft section; 26. Third shaft section; 3. Frame; 4. Locking nut; 5. Steering mechanism; 51. Washer; 52. Steering component; 521. Sliding seat; 522. Sliding shaft; 523. Lead screw;

[0034] 524. Connecting rod; 525. Fixed seat; 526. Sleeve; 527. Pin shaft; 528. Rotating shaft;

[0035] 6. Shielding plate; 7. Maintenance trolley. Detailed implementation mode

[0036] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts belong to the scope of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings. It is only for the convenience and simplification of description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0038] In the description of the present invention, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "connection", "setting", "installation", "fixation", etc. 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] Embodiment 1

[0041] As Figure 1 And Figure 2As shown in the figure, the transmission device of the high-pressure compactor die for high-level radioactive solid waste in this embodiment is installed between the die 1 and the driving device, and the driving device and the die 1 are respectively arranged outside and inside the hot cell.

[0042] This device includes a pull rod 2, a frame 3, a locking nut 4 and a steering mechanism 5. The die 1 is provided with a rectangular through hole 11. As Figure 5 and Figure 6 shown, one end of the pull rod 2 is provided with a T-shaped head 21. The head length of the T-shaped head 21 is greater than the radial width of the rectangular through hole 11 and less than the radial length of the rectangular through hole 11, so as to form an orientable plugging structure with the rectangular through hole 11. The pull rod 2 lifts the die 1 through the T-shaped head 21 penetrating out of the rectangular through hole 11. That is, when the T-shaped head 21 rotates around the axis of the pull rod 2 to the phase where the head length is aligned with the radial length of the rectangular through hole 11, the T-shaped head 21 can pass through the rectangular through hole 11 to achieve plugging, and plugging cannot be achieved in other phases. Among them, when the T-shaped head 21 penetrates out of the rectangular through hole 11 and rotates to the phase where the head length is aligned with the radial width of the rectangular through hole 11, the steps between the two wings of the head of the T-shaped head 21 and the pull rod 2 can be used as the supporting surface of the die 1 to lift the die 1.

[0043] As Figure 3 and Figure 4 shown, the frame 3 is connected to the driving device. The other end of the pull rod 2 penetrates through the frame 3, and the end portion penetrating out of the frame 3 is fastened to the frame 3 through the locking nut 4, so as to transmit the driving force of the driving device along the axis of the pull rod 2 to the die 1. The steering mechanism 5 is connected to the pull rod 2 and is clamped between the locking nut 4 and the frame 3, so as to be fixed under pressure to form a rotation restraint to limit the pull rod 2 from rotating around the axis when the locking nut 4 is tightened, and to be able to drive the pull rod 2 to drive the T-shaped head 21 to rotate around the axis to reach the position where it can be orientably plugged with the rectangular through hole 11 to realize the disassembly and assembly of the die 1 when the locking nut 4 is loosened.

[0044] In this embodiment, the driving force is transmitted through the pull rod 2. The T-shaped head 21 of the pull rod 2 is used to realize orientable plugging with the rectangular through hole 11 of the die 1. The installation and disassembly of the die 1 can be realized only by the rotation and axial movement of the T-shaped head 21, and this process can be completely realized by operating at the other end of the pull rod 2. Compared with the traditional bolt connection method, when this connection method is used for the die of the high-pressure compactor for high-level radioactive solid waste, it not only ensures the connection reliability, but also can avoid the cumbersome operation steps inside the hot cell, but transfers the main disassembly and assembly operations to the outside of the hot cell, greatly reducing the operation precision requirements for the remote operation equipment.

[0045] More importantly, the locking nut 4 therein is used to fasten the pull rod 2 and the frame 3, ensuring stable transmission of the driving force. The steering mechanism 5 that controls the rotation of the pull rod 2 can be locked and fixed by the locking nut 4 that fixes the pull rod 2 itself, so that the tightening action of the locking nut 4 is directly converted into the axial pressing force on the steering mechanism 5, forming a rigid rotational constraint. This structural setting ingeniously integrates the locking and anti-rotation functions into a single operation: when the locking nut 4 is tightened, the steering mechanism 5 is pressed against the frame 3 and fits tightly, completely restricting the circumferential freedom of the pull rod 2 through friction, ensuring pure axial transmission of the driving force; when the locking nut 4 is loosened, the steering mechanism 5 is released from the constraint, and can actively drive the pull rod 2 to drive the T-shaped head 21 to accurately rotate to the disassembly and assembly angle. It can be seen that this combination method breaks through the structural limitations of the traditional need for independent locking and steering control. It not only eliminates redundant components such as additional anti-rotation pins and key grooves, but also synchronously completes two core functions of "power transmission locking" and "steering freedom release" through the conventional operation of the locking nut 4, greatly simplifying the disassembly and assembly process of the mold 1 in the radioactive environment, and avoiding the risk of positioning deviation introduced by multi-step operations and complex structures. It is especially suitable for remote low-precision operation scenarios outside the hot cell, significantly improving the safety of facility maintenance.

[0046] In this embodiment, the steering mechanism 5 includes a washer 51 and a steering assembly 52. The end of the pull rod 2 passing through the frame 3 includes a threaded section 22 and a special-shaped shaft section 23. The threaded section 22 is arranged on the side of the special-shaped shaft section 23 away from the frame 3 and is used to connect the locking nut 4 through threads. The washer 51 is provided with a special-shaped hole consistent with the cross-section of the special-shaped shaft section 23 and is sleeved on the special-shaped shaft section 23 through the special-shaped hole. The steering assembly 52 is used to drive the washer 51 to rotate, so as to drive the pull rod 2 to rotate synchronously. As Figure 7 and Figure 8 shown, the cross-section of the special-shaped shaft section 23 and the special-shaped hole on the washer 51 in this embodiment are both square structures. In other embodiments, other non-circular structures such as hexagons and rectangles can also be used to ensure synchronous rotation.

[0047] The matching design of the special-shaped shaft section 23 and the special-shaped hole of the washer 51 enables a slip-free synchronous rotation between the pull rod 2 and the steering mechanism 5, ensuring accurate control of the rotation angle. The washer 51 is in a keyless nested fit with the special-shaped shaft section 23 of the pull rod 2 through the special-shaped hole. The washer 51, as the hub of the rotation function and the locking function, not only plays a role in driving in cooperation with the non-circular cross-section, but also can play a role in pressure isolation, isolating the circumferential friction interference of the locking nut 4 when tightened on the threaded section 22, so that the thread only bears the axial locking force, avoiding thread bite failure and extending the service life. This structure ingeniously completes the two independent functions of "steering drive" and "anti-rotation locking" through the washer and the nut, making the structure simpler, especially suitable for the strict requirements of equipment reliability and operation error tolerance in the high-radiation environment.

[0048] In this embodiment, asFigure 8 As shown, the thickness of the washer 51 is greater than the length of the special-shaped shaft section 23. According to the following, when the mold 1 is replaced, the locking nut 4 is loosened, causing the pull rod 2 to descend. Therefore, the thickness of the washer 51 is specifically greater than the sum of the descending distance of the pull rod 2 and the length of the special-shaped shaft section 23 when the mold 1 is replaced. This dimension setting can ensure that even if the pull rod 2 has a certain descending distance during the replacement of the mold 1, the special-shaped shaft section 23 can be maintained at a position adapted to the washer 51. Correspondingly, a light hole section for avoiding the special-shaped shaft section 23 is provided at the opening of the end of the locking nut 4 close to the washer 51 to ensure that the locking nut 4 does not interfere with the special-shaped shaft section 23 when locking the pull rod 2 and pressing the washer 51 tightly.

[0049] In this embodiment, the rod body of the pull rod 2 is the second shaft section 25, and the shaft section passing through the frame 3 is the first shaft section 24. The diameter of the first shaft section 24 is smaller than that of the second shaft section 25. When the locking nut 4 is tightened to press and fix the washer 51, the shoulder between the first shaft section 24 and the second shaft section 25 on the pull rod 2 abuts against the surface of the frame 3 facing the mold 1. In this setting structure, not only can the axial stable fixation of the pull rod 2 and the frame 3 be achieved from both sides of the frame 3 through the shoulder and the locking nut 4, but also whether the locking nut 4 is screwed to the locking position can be determined based on whether the shoulder fits the surface of the frame 3, reducing the installation difficulty.

[0050] In this embodiment, as Figure 9 shown, the steering assembly 52 includes a sliding seat 521, a sliding shaft 522, a lead screw 523, and a connecting rod 524. The sliding shaft 522 and the lead screw 523 are both perpendicular to and parallel to the pull rod 2. The sliding shaft 522 is fixedly connected to the frame 3, the lead screw 523 is rotatably connected to the frame 3, one end of the connecting rod 524 is connected to the washer 51, and the other end is hingedly connected to the sliding seat 521. The sliding seat 521 is sleeved on the sliding shaft 522 and the lead screw 523 to drive the connecting rod 524 to pull the washer 51 to rotate along the sliding of the sliding seat 521 when the lead screw 523 rotates.

[0051] Specifically, the steering assembly 52 further includes a fixed seat 525, a sleeve 526, a pin shaft 527 and a rotating shaft 528. There are two fixed seats 525, both fixedly connected to the frame 3. The sliding shaft 522 is a square shaft, and both ends are respectively connected to the two fixed seats 525, and are fixedly supported by the fixed seats 525. The lead screw 523 passes through the two fixed seats 525, is supported by the fixed seats 525, is parallel to the sliding shaft 522 and is located below the sliding shaft 522, and can rotate within the fixed seat 525. One end of the lead screw 523 is a nut head structure that extends out of the outside of the fixed seat 525; the sliding seat 521 is sleeved on the lead screw 523 and the sliding shaft 522, and is driven by the lead screw 523 to slide along the sliding shaft 522; the rotating shaft 528 is installed in the central blind hole at the upper end of the sliding seat 521 and can rotate around its own axis within the blind hole; the upper end of the rotating shaft 528 is hingedly connected to the sleeve 526 through the pin shaft 527. The inner hole of the sleeve 526 is movably sleeved with the connecting rod 524, and the connecting rod 524 is finally connected to the square hole washer 51. The overall structure enables the connecting rod 524 to be freely adapted to the sliding seat 521, avoiding the washer 51 being unable to rotate due to the change of the turning radius.

[0052] In this embodiment, the rod body of the pull rod 2 is the second shaft section 25. The diameter of the second shaft section 25 is greater than the radial width of the rectangular through hole 11. A third shaft section 26 is further provided between the second shaft section 25 and the T-shaped head 21, and the third shaft section 26 passes through the rectangular through hole 11. The diameter of the third shaft section 26 is smaller than the radial width of the rectangular through hole 11, and the length of the third shaft section 26 is greater than the axial depth of the rectangular through hole 11, so that there is an axial relative movement margin between the pull rod 2 and the mold 1, facilitating the T-shaped head 21 to rotate around the axis when the locking nut 4 is loosened, and avoiding the contact friction between the T-shaped head 21 and the mold 1 from causing non-rotation.

[0053] In this embodiment, the transmission device is arranged vertically as a whole. The frame 3 is connected to the driving device or the power mechanism and moves up and down. The vertical axial power is transmitted through the pull rod 2, thereby driving the mold 1 to move up and down. Specifically, as Figure 7 shown, the pull rod 2 is a long shaft structure. In the overall structure of the pull rod 2, the middle second shaft section 25 is a smooth shaft; the upper first shaft section 24 is a smooth shaft with a diameter smaller than that of the second shaft section 25. There is a square-shaped special-shaped shaft section 23 at the upper end of the first shaft section 24, which is matched with the square hole washer 51. The uppermost end of the pull rod 2 is a threaded section 22 with an external thread structure, which is matched with the internal thread of the locking nut 4; the lower third shaft section 26 is a smooth shaft with a diameter smaller than that of the middle second shaft section 25, and the lower end of the third shaft section 26 is a T-shaped head 21 structure.

[0054] In this embodiment, the two ends of the mold 1 are respectively a connection end and a pressing end. A connection disk 12 protruding radially outward is provided at the connection end, as Figure 1As shown, there is a set distance between the surface of the connecting plate 12 facing the pressing end and the pressing end. The rectangular through-hole 11 is axially formed in the connecting plate 12 along the axis of the mold 1. After the pressing end of the mold 1 is supported, the pull rod 2 can drive the T-shaped head 21 to continue moving axially towards the pressing end, so as to facilitate the axial rotation of the T-shaped head 21 when the locking nut 4 is loosened. When the device is vertically arranged, after the pressing end of the mold 1 contacts the ground or the maintenance trolley 7, the T-shaped head 21 of the pull rod 2 can still continue to move downward so as to disengage from the connecting plate 12. It can be seen that the setting of the connecting plate 12 extends the distance between the rectangular through-hole 11 and the pressing end of the mold 1. After the pressing end of the mold 1 is supported, the pull rod 2 can still continue to move axially, providing the necessary space margin for the rotation of the T-shaped head 21. This design avoids the problem of the T-shaped head 21 being stuck due to the self-weight of the mold 1, ensuring that the pull rod 2 can be smoothly withdrawn during disassembly.

[0055] In this embodiment, the pull rod 2 drives the mold 1 to move under the drive of the driving device, and after the pressing end of the mold 1 is supported, it continues to move axially, so that the shoulder between the second shaft section 25 and the third shaft section 26 abuts against the surface of the connecting end of the mold 1 to further press the pressing end. The shoulder between the second shaft section 25 and the third shaft section 26 abuts against the connecting end of the mold 1 after the mold 1 presses the material or workpiece, forming a secondary pressing effect to further eliminate the assembly gap between the mold 1 and the pull rod 2. And in the first stage, it relies on the self-weight of the mold 1 to press, and in the second stage, it is pressed by the driving force of the driving device. This staged pressing mechanism also improves the stability of the mold 1 during the high-level radioactive waste treatment process.

[0056] In this embodiment, the interconnected pull rod 2, locking nut 4 and steering mechanism 5 are used as a set of transmission modules. There are multiple sets of transmission modules, and each set of transmission modules is connected in parallel between the frame 3 and the mold 1 and is evenly distributed around the axis of the mold 1. The multiple sets of transmission modules are evenly distributed around the axis of the mold 1, so that the driving force acts evenly on the circumferential direction of the mold 1, avoiding eccentric load or deformation caused by single-point force. And the multiple transmission modules supporting the mold 1 together can effectively prevent the mold 1 from detaching due to the wrong phase setting of a certain pull rod 2, ensuring safety. In this embodiment, there are four sets of transmission modules. In other embodiments, the number of transmission modules can also be selected according to the situation of the mold 1.

[0057] Specifically, four rectangular through-holes 11 that penetrate up and down are evenly distributed on the connection plate 12 of the mold 1. The long side of the rectangular through-hole 11 is greater than the long side of the T-shaped head 21, and the short side is less than the long side of the T-shaped head 21 and greater than the diameter of the third shaft section 26 of the pull rod 2. Four circular holes that penetrate up and down are evenly distributed on the end face of the frame 3. The diameter of the circular hole is less than the diameter of the second shaft section 25 of the pull rod 2 and greater than the diameter of the first shaft section 24 of the pull rod 2. During connection, one pull rod 2 is inserted into each of the four rectangular through-holes 11 of the mold 1. The T-shaped head 21 at the lower end of the pull rod 2 is located below the lower end face of the connection plate 12 of the mold 1. The third shaft section 26 of the pull rod 2 is located within the rectangular through-hole 11. The step formed by the T-shaped head 21 and the third shaft section 26 can lift the mold 1. After the four pull rods 2 pass upward through the intermediate hot chamber shielding plate 6, the first shaft section 24 is inserted into the circular hole of the frame 3. The lower end face of the frame 3 is limited by the step formed by the first shaft section 24 and the second shaft section 25 of the pull rod 2. The threaded sections 22 at the upper ends of the four pull rods 2 extend out of the upper end face of the frame 3, and the pull rods 2 are locked by four locking nuts 4. The square-hole washer 51 is sleeved on the square-shaped special-shaped shaft section 23 of the pull rod 2 and is located between the locking nut 4 and the frame 3.

[0058] Each square-hole washer 51 is connected to a steering assembly 52. The steering assembly 52 is installed on the side of the frame 3. By using an electric wrench to rotate the lead screw 523 of the steering assembly 52, the lead screw 523 can drive the sliding seat 521, the rotating shaft 528, and the sleeve 526 to move left and right. Under the resistance of the pull rod 2, the rotating shaft 528 and the sleeve 526 rotate while moving, thereby driving the connecting rod 524 and the square-hole washer 51 to rotate, and finally driving the pull rod 2 to rotate. The lead screw 523 of the steering assembly 52 can be self-locked to prevent the pull rod 2 from rotating and losing its phase during operation.

[0059] During normal operation, the long side of the T-shaped head 21 is perpendicular to the long side of the rectangular through-hole 11 of the mold 1. The sliding seat 521 of the steering mechanism 5 is located between the two fixed seats 525. At this time, the long side of the T-shaped head 21 is perpendicular to the long side of the rectangular through-hole 11 of the mold 1, and the T-shaped head 21 cannot be disengaged from the rectangular through-hole 11 of the mold 1, ensuring reliable connection during the up and down movement of the mold 1. When the mold 1 needs to be replaced, loosen the locking nut 4 to make the pull rod 2 drop a certain distance, and rotate the lead screw 523 with an electric wrench to drive the pull rod 2 to rotate 90°. The long side of the T-shaped head 21 is parallel to the long side of the rectangular through-hole 11 of the mold 1. At this time, the T-shaped head 21 can be disengaged upward from the rectangular through-hole 11 of the mold 1.

[0060] In summary, generally speaking, the device of this embodiment is connected to the mold 1, including a pull rod 2, a frame 3, a locking nut 4, and a steering mechanism 5 (including a square-hole washer 51). The lower part of the hot cell shield 6 is the hot cell, and the upper part is the operation area. The mold 1 is located in the hot cell, and the frame 3, the locking nut 4, and the steering mechanism 5 are located in the operation area. The pull rod 2 penetrates through the shield 6 vertically, with the lower end connected to the mold 1, the upper end connected to the frame 3 and locked by the locking nut 4. The square-hole washer 51 is placed between the frame 3 and the locking nut 4. The steering mechanism 5 is fixed on the side of the frame 3 and connected to the square-hole washer 51. This device provides a transmission structure with a remote replacement function for the high-level radioactive solid waste ultra-press mold, aiming to solve the problem that maintenance personnel cannot enter the hot cell to replace the mold 1 in a high-level radioactive environment, and can enable maintenance personnel to operate the corresponding operating mechanism outside the hot cell to remotely replace the mold 1.

[0061] Embodiment 2

[0062] For the method of replacing the high-level radioactive solid waste ultra-press mold in this embodiment, the transmission device used for the mold 1 is the high-level radioactive solid waste ultra-press mold transmission device in Embodiment 1. The method includes a disassembly step and an installation step.

[0063] Among them, the disassembly step includes:

[0064] Loosen the locking nut 4;

[0065] Operate the steering mechanism 5 to drive the pull rod 2 to drive the T-shaped head 21 to rotate axially until it reaches the position where it can be orientably inserted into the rectangular through-hole 11;

[0066] The driving device drives the pull rod 2 to drive the T-shaped head 21 to move axially until it disengages from the rectangular through-hole 11 of the mold 1 to achieve the disassembly of the mold 1.

[0067] Specifically, when disassembling the mold 1, place the maintenance trolley 7 directly below the mold 1 and let the mold 1 fall onto the maintenance trolley 7: The operator is in the operation area. First, loosen the four locking nuts 4 at the upper end of the pull rod 2 to let the pull rod 2 drop a certain distance, and then rotate the lead screw 523 with an electric wrench to drive the sliding seat 521 to translate. The rotating shaft 528 and the sleeve 526 translate and rotate, and then drive the connecting rod 524 and the square-hole washer 51 to rotate, and finally drive the pull rod 2 to rotate 90°, so that the long side of the T-shaped head 21 is parallel to the long side of the rectangular through-hole 11 of the mold 1; Lift the frame 3 upward to make the T-shaped head 21 at the lower end of the pull rod 2 leave the rectangular through-hole 11 of the mold 1; Transport the mold 1 away through the maintenance trolley 7.

[0068] The installation step includes:

[0069] The driving device drives the pull rod 2 to drive the T-shaped head 21 to move axially until it penetrates through the rectangular through-hole 11 of the mold 1;

[0070] The steering mechanism 5 is operated to drive the pull rod 2 to drive the T-shaped head 21 to rotate axially until it is offset from the rectangular through hole 11 from the directionally insertable position;

[0071] Tighten the locking nut 4 to install the mold 1.

[0072] Specifically, when replacing a new mold 1, the maintenance trolley 7 transfers the mold 1 to the bottom of the frame 3; the frame 3 is lowered so that the T-shaped head 21 at the lower end of the pull rod 2 passes through the rectangular through hole 11 of the mold 1 to reach the lower end surface of the mold 1; the operator in the operating area uses an electric wrench to reversely rotate the screw 523 of the steering mechanism 5 and rotate the pull rod 2 90° so that the long side of the T-shaped head 21 is perpendicular to the long side of the rectangular through hole 11 of the mold 1; the four locking nuts 4 are tightened to complete the connection.

[0073] Example 3

[0074] The high-level solid waste treatment equipment of this embodiment includes a drive device, a mold 1, a hot chamber, a maintenance trolley 7, and the high-level solid waste super press mold transmission device of Example 1. The drive device and the mold 1 are respectively arranged on the outside and inside of the hot chamber shielding plate 6. The high-level solid waste super press mold transmission device penetrates the shielding plate 6 and is connected between the drive device and the mold 1. It is used to drive the mold 1 to treat high-level solid waste under the drive device. Figure 2 As shown, a maintenance trolley 7 is provided inside the hot chamber for transporting the mold 1 when the mold 1 is replaced.

[0075] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A transmission device for a high-level radioactive solid waste superpressing machine die, characterized in that: It includes a pull rod (2), a frame (3), a locking nut (4) and a steering mechanism (5). The mold (1) is provided with a rectangular through hole (11). One end of the pull rod (2) is provided with a T-shaped head (21). The length of the head of the T-shaped head (21) is greater than the radial width of the rectangular through hole (11) and less than the radial length of the rectangular through hole (11), so as to form an orientable plug-in structure with the rectangular through hole (11). The pull rod (2) lifts the mold (1) through the T-shaped head (21) penetrating out of the rectangular through hole (11). The frame (3) is connected to a driving device. The other end of the pull rod (2) penetrates through the frame (3), and the end portion penetrating out of the frame (3) is fastened to the frame (3) by a locking nut (4), so as to transmit the driving force of the driving device along the axial direction of the pull rod (2) to the mold (1). The steering mechanism (5) is connected to the pull rod (2) and is clamped between the locking nut (4) and the frame (3), so as to be pressed and fixed to form a rotational restraint to limit the pull rod (2) from rotating around the axial direction when the locking nut (4) is tightened, and to be able to drive the pull rod (2) to drive the T-shaped head (21) to rotate around the axial direction to reach the orientable plug-in position with the rectangular through hole (11) when the locking nut (4) is loosened, so as to realize the disassembly and assembly of the mold (1).

2. The high-level radioactive solid waste ultra-press machine die drive device according to claim 1, characterized in that: The steering mechanism (5) includes a washer (51) and a steering component (52). The end portion of the pull rod (2) penetrating out of the frame (3) includes a threaded section (22) and a special-shaped shaft section (23). The threaded section (22) is arranged on the side of the special-shaped shaft section (23) away from the frame (3) and is used for connecting the locking nut (4) by threads. The washer (51) is provided with a special-shaped hole consistent with the cross section of the special-shaped shaft section (23) and is sleeved on the special-shaped shaft section (23) through the special-shaped hole. The steering component (52) is used to drive the washer (51) to rotate, so as to drive the pull rod (2) to rotate synchronously.

3. The high-level radioactive solid waste ultra-press machine die transmission device according to claim 2, characterized in that: The thickness of the washer (51) is greater than the length of the special-shaped shaft section (23).

4. The high-level radioactive solid waste superpressing machine die transmission device according to claim 2, characterized in that: The rod body of the pull rod (2) is a second shaft section (25), and the shaft section penetrating through the frame (3) is a first shaft section (24). The diameter of the first shaft section (24) is smaller than the diameter of the second shaft section (25). When the locking nut (4) is tightened to press and fix the washer (51), the shoulder between the first shaft section (24) and the second shaft section (25) on the pull rod (2) abuts against the surface on the side of the frame (3) facing the mold (1).

5. The high-level radioactive solid waste ultra-press machine die transmission device according to claim 2, wherein: The steering component (52) includes a sliding seat (521), a sliding shaft (522), a lead screw (523) and a connecting rod (524). Both the sliding shaft (522) and the lead screw (523) are perpendicular to the pull rod (2) and parallel to each other. The sliding shaft (522) is fixedly connected to the frame (3), and the lead screw (523) is rotatably connected to the frame (3). One end of the connecting rod (524) is connected to the washer (51), and the other end is hinged to the sliding seat (521). The sliding seat (521) is sleeved on the sliding shaft (522) and the lead screw (523), so as to drive the connecting rod (524) to pull the washer (51) to rotate along the sliding of the sliding seat (521) when the lead screw (523) rotates.

6. The high-level radioactive solid waste superpressing machine die transmission device according to claim 1, characterized in that: The pull rod (2) has a second shaft section (25) whose diameter is greater than the radial width of the rectangular through hole (11). A third shaft section (26) is provided between the second shaft section (25) and the T-shaped head (21), and the third shaft section (26) passes through the rectangular through hole (11). The diameter of the third shaft section (26) is smaller than the radial width of the rectangular through hole (11). The length of the third shaft section (26) is greater than the axial depth of the rectangular through hole (11), so that there is an axial relative movable margin between the pull rod (2) and the mold (1), so as to facilitate the axial rotation of the T-shaped head (21) when the locking nut (4) is loosened.

7. The high-level radioactive solid waste ultra-press machine die transmission device according to claim 6, characterized in that: The two ends of the mold (1) are a connecting end and a pressing end, respectively. A connecting disk (12) protruding radially outward is provided at the connecting end. A surface of the connecting disk (12) facing the pressing end is spaced apart from the pressing end. The rectangular through hole (11) is opened on the connecting plate (12) along the axial direction of the mold (1), so that after the clamping end of the mold (1) is supported, the pull rod (2) can drive the T-shaped head (21) to continue to move axially toward the clamping end, so as to facilitate the T-shaped head (21) to rotate axially when the locking nut (4) is loosened.

8. The high-level radioactive solid waste ultra-press machine die transmission device according to claim 6, characterized in that: The pull rod (2) drives the mold (1) to move under the drive of the driving device, and after the pressing end of the mold (1) is supported, it continues to move axially, so that the shoulder between the second shaft section (25) and the third shaft section (26) presses against the connecting end surface of the mold (1) to further press the pressing end.

9. The high-level radioactive solid waste superpressing machine die transmission device according to any one of claims 1 to 8, characterized in that: The interconnected pull rod (2), locking nut (4) and steering mechanism (5) serve as a group of transmission modules, and the transmission modules are provided with multiple groups. Each group of transmission modules is connected in parallel between the frame (3) and the mold (1), and is evenly distributed around the axial direction of the mold (1).

10. A method for replacing the mold of a high-level radioactive solid waste hypercompressor, characterized in that, The transmission device used in the mold (1) is the high-level solid waste super press mold transmission device according to any one of claims 1 to 9. The method comprises a disassembly step and an installation step, wherein the disassembly step comprises: Loosen the lock nut (4); The steering mechanism (5) is operated to drive the pull rod (2) to drive the T-shaped head (21) to rotate axially to a position where it can be orientably plugged into the rectangular through hole (11); The driving device drives the pull rod (2) to drive the T-shaped head (21) to move axially until it is separated from the rectangular through hole (11) of the mold (1), thereby realizing the disassembly of the mold (1); The installation steps include: The driving device drives the pull rod (2) to drive the T-shaped head (21) to move axially until it penetrates the rectangular through hole (11) of the mold (1); The steering mechanism (5) is operated to drive the pull rod (2) to drive the T-shaped head (21) to rotate axially until it is offset from the rectangular through hole (11) from the directionally plug-in position; The mold (1) is installed by tightening the locking nut (4).

11. A high-level radioactive solid waste treatment device, characterized in that: The invention comprises a driving device, a mold (1), a hot chamber, a maintenance trolley (7), and a high-level solid waste super press mold transmission device according to any one of claims 1 to 9. The driving device and the mold (1) are respectively arranged on the outside and inside of the hot chamber shielding plate (6). The high-level radioactive solid waste superpressing machine die transmission device penetrates through the shielding plate (6) and is connected between the driving device and the die (1), and is used for driving the die (1) to process high-level radioactive solid waste under the drive of the driving device. The maintenance trolley (7) is arranged inside the hot cell and is used for transporting the die (1) when replacing the die (1).

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