Transmission shaft structure and radioactive material processing equipment

Abstract

The invention discloses a transmission shaft structure which comprises couplings, transmission shafts and a compensation mechanism, the number of the transmission shafts is two, the two transmission shafts are arranged on the same axis in an end-to-end opposite mode, and the non-opposite ends of the two transmission shafts are connected with a power shaft and a driven shaft through the couplings respectively. The opposite ends of the two transmission shafts are in floating connection in the axial direction through a compensation mechanism so as to compensate the installation deviation of the power shaft and the driven shaft through floating. The transmission shaft is reasonable in structural arrangement, installation deviation is effectively compensated, fatigue failure is avoided, the service life of a shaft system is prolonged, and the treatment efficiency of treatment equipment is guaranteed. The invention further provides radioactive material processing equipment.

Description

Technical Field

[0001] The invention specifically relates to a transmission shaft structure and radioactive material processing equipment. Background Art

[0002] Due to the special characteristics of the post-processing project with strong radioactivity, it is inconvenient for personnel to directly repair the equipment. Therefore, the shaft system structure of the power source transmission generally adopts a long-axis rigid connection structure to be introduced from the outside of the hot chamber through the hot chamber wall into the hot chamber. After the power shaft of the power equipment is extended into the hot chamber, it needs to be docked with the driven shaft of the driven equipment. Because there is a deviation in the docking position and angle, a cross-block universal coupling transmission structure is usually used to compensate for this deviation. Therefore, many moving equipment in the spent fuel reprocessing plant use a shaft system structure connected by a universal coupling for the transmission input of the power source, such as the spent fuel assembly shearing machine, the waste cladding flipping and dumping device and other radioactive material (or radioactive waste material) processing equipment in the spent fuel reprocessing plant. The shaft system between the driven equipment and the power equipment can be disengaged, which is convenient for the long-distance disassembly and assembly of the vulnerable modules.

[0003] However, after installation and long-distance disassembly and resetting, although the use of universal couplings can eliminate the shaft system docking and angle deviation, the resulting installation deviation will cause the shaft system structure to produce a large additional bending moment in addition to the torque. Under the combined effect of torque and bending moment, the connected taper pin will fail due to fatigue after long-term operation, eventually causing the entire coupling shaft system to be unable to operate. Taper pin failures have frequently occurred in the post-processing plant, resulting in frequent equipment shutdowns, which ultimately affected the plant's operating rate. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a transmission shaft structure for the above-mentioned deficiencies in the prior art, which is reasonably arranged, effectively compensates for installation deviation, avoids the occurrence of fatigue failure, prolongs the service life of the shaft system, and ensures the processing efficiency of the processing equipment. The present invention also provides a radioactive material processing device.

[0005] The present invention provides a transmission shaft structure, comprising a coupling, a transmission shaft and a compensation mechanism, wherein two transmission shafts are provided, and the two transmission shafts are arranged end to end on the same axis, and the non-opposite ends of the two transmission shafts are respectively connected to a power shaft and a driven shaft through a coupling, and the opposite ends of the two transmission shafts are connected in an axial floating manner through the compensation mechanism to compensate for the installation deviation of the power shaft and the driven shaft through floating.

[0006] Furthermore, the compensation mechanism includes an elastic member, which is arranged along the axial direction of the transmission shaft and connected between opposite ends of the two transmission shafts to achieve axial floating of the two transmission shafts.

[0007] Furthermore, the compensation mechanism also includes a guide sleeve, which is arranged outside the opposite ends of the two transmission shafts and is movably connected to the end of at least one of the transmission shafts along the axial direction, and the elastic member is arranged inside the guide sleeve.

[0008] Furthermore, the compensation mechanism also includes a pin, and the guide sleeve is provided with a strip groove penetrating the wall of the guide sleeve, and the length direction of the strip groove is arranged along the axial direction of the transmission shaft. The transmission shaft axially movably connected to the guide sleeve serves as a movable transmission shaft, and a radial through hole is provided on the end portion. The pin passes through the radial through hole and is slidably arranged in the strip groove to guide the axial movement of the transmission shaft.

[0009] Furthermore, the compensation mechanism also includes a first gasket, which is located in the guide sleeve and includes a first gasket and a threaded head. The end of the movable transmission shaft located on the inner side of the guide sleeve is provided with an axial threaded hole, and a threaded head is provided on one side of the first gasket. The threaded head is embedded in the threaded hole and is threadably matched with the thread of the threaded hole so that the side of the first gasket fits the end of the movable transmission shaft, and the other side of the first gasket is used to abut the end of the elastic member.

[0010] Furthermore, the guide sleeve is movably connected to the end of one transmission shaft along the axial direction and fixedly connected to another transmission shaft. The fixedly connected transmission shaft serves as a fixed transmission shaft. Radial through holes are provided at corresponding positions of the fixed transmission shaft end and the guide sleeve, and fixation is achieved by pins inserted into the radial through holes.

[0011] Furthermore, the compensation mechanism also includes a second pad, which is arranged in the guide sleeve. The inner hole of the guide sleeve is a stepped hole. The diameter of the hole section accommodating the second pad is larger than the diameter of the hole section connecting and fixing the transmission shaft to form a step surface. One side of the second pad is attached to the step surface of the stepped hole, and the other side is used to abut the end of the elastic member.

[0012] Furthermore, the coupling is a cross block universal coupling structure, and the connection between the coupling and the transmission shaft is fixed by a pin.

[0013] Furthermore, the floating range of the compensation mechanism is 30 mm to 100 mm.

[0014] The present invention also provides a radioactive material processing device, including a power device, a driven device and the above-mentioned transmission shaft structure, wherein the driven device is arranged inside the hot chamber and is used to process radioactive materials, and the power device is arranged outside the hot chamber. The power shaft of the power device passes through the hot chamber wall and is introduced into the hot chamber, and the end of the power shaft located inside the hot chamber is connected to the driven shaft of the driven device through the transmission shaft structure, thereby providing a power source for the driven device.

[0015] The transmission shaft structure of the present invention is used to transmit power between the power shaft and the driven shaft. Compared with the conventional connection method, the transmission shaft structure not only includes a coupling, but also includes a transmission shaft and a compensation mechanism. The power shaft and the driven shaft are not directly connected by a coupling, but a transmission shaft is used for connection. The two transmission shafts achieve axial floating compensation through the compensation mechanism, thereby achieving axial flexible connection. Therefore, not only can the angular deviation be compensated through the coupling, but also the radial deviation can be compensated by combining the couplings on both sides and the transmission shaft connected from the middle. The floating connection can also achieve axial deviation compensation. Therefore, even if there is a deviation after installation and long-distance disassembly and reset, the shaft system structure will not generate additional bending moment, thus avoiding fatigue failure of the connected tapered pin, ensuring the normal operation of the entire coupling shaft system during operation, and extending the service life of the shaft system. Not only can the maintenance cost be reduced, but also the production efficiency can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the transmission shaft structure in Example 1 of the present invention;

[0017] Figure 2 is a schematic diagram of the internal structure of the compensation mechanism of the transmission shaft structure in Example 1 of the present invention;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the compensation mechanism of the transmission shaft structure in Example 1 of the present invention.

[0019] In the figure: 1, coupling; 2, transmission shaft; 3, compensation mechanism; 31, elastic member; 32, guide sleeve; 321, strip groove; 33, pin; 34, first pad; 341, first gasket; 342, threaded head; 35, second pad; 351, second gasket; 352, protrusion; 4, pin. DETAILED DESCRIPTION

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] Example 1

[0025] like Figures 1 to 3 As shown, the transmission shaft structure of this embodiment includes a coupling 1, a transmission shaft 2 and a compensation mechanism 3. Two transmission shafts 2 are provided, and the two transmission shafts 2 are arranged end to end on the same axis. The non-opposite ends of the two transmission shafts 2 are respectively connected to the power shaft and the driven shaft through a coupling 1, and the opposite ends of the two transmission shafts 2 are connected in an axial floating manner through the compensation mechanism 3 to compensate for the installation deviation of the power shaft and the driven shaft through floating.

[0026] The transmission shaft structure of this embodiment is used to transmit power between the power shaft and the driven shaft. Compared with the conventional connection method, this transmission shaft structure not only includes a coupling 1, but also includes a transmission shaft 2 and a compensation mechanism 3. The coupling 1 is not used to directly connect the power shaft and the driven shaft, but the transmission shaft 2 is used for connection. The two transmission shafts 2 achieve axial floating compensation through the compensation mechanism 3, thereby achieving axial flexible connection. Therefore, not only can the angular deviation be compensated through the coupling 1, but also the radial deviation can be compensated by combining the couplings 1 on both sides and the transmission shaft connected from the middle. The floating connection can also achieve axial deviation compensation. Therefore, even if there is a deviation after installation and long-distance disassembly and reset, the shaft system structure will not generate additional bending moment, thus avoiding fatigue failure of the connected taper pin, ensuring the normal operation of the entire coupling shaft system during operation, and extending the service life of the shaft system. It can not only reduce maintenance costs, but also effectively improve production efficiency.

[0027] Therefore, the transmission shaft structure of this embodiment can be used for shaft system structures that are not easy to replace, such as spent fuel reprocessing equipment. In view of the long shaft passing through the wall in the spent fuel reprocessing plant, while meeting its power transmission function, it fully considers that the structure may bear torque and bending moment at the same time due to eccentricity in installation, and effectively compensates for various deviations to improve the ability of the transmission shaft system to resist eccentricity, minimize the additional bending moment caused by the eccentricity of the shaft system, reduce the installation accuracy requirements of the transmission shaft structure, and increase its service life. This transmission shaft structure can also be used for similar equipment in the civil machinery industry.

[0028] In this embodiment, the compensation mechanism 3 includes an elastic member 31, which is arranged along the axial direction of the transmission shaft 2 and connected between the opposite ends of the two transmission shafts 2 to achieve axial floating of the two transmission shafts 2. The use of the elastic member 31 to achieve floating connection can provide a certain escape space when the axial direction is compressed, effectively avoiding the generation of additional bending moment.

[0029] In this embodiment, the compensation mechanism 3 further includes a guide sleeve 32, which is a cylindrical structure as a whole. The guide sleeve 32 is sleeved on the outside of the opposite ends of the two transmission shafts 2 and is movably connected to the end of at least one of the transmission shafts 2 along the axial direction. The elastic member 31 is arranged inside the guide sleeve 32. The guide sleeve 32 structure first limits the two transmission shafts 2 to ensure that the floating connection only exists in the axial direction. Secondly, it also serves as a rigid component for force transmission in the circumferential direction to ensure the force transmission of the two transmission shafts 2, that is, it ensures axial floating and realizes torque transmission.

[0030] In this embodiment, the compensation mechanism 3 also includes a pin 33, and a strip groove 321 penetrating the wall of the guide sleeve 32 is provided on the guide sleeve 32. Specifically, the length direction of the strip groove 321 is arranged along the axial direction of the transmission shaft 2. There are two strip grooves 321 provided on the guide sleeve 32, which are symmetrically distributed, so that the pin 33 can penetrate the guide sleeve 32 radially and be fastened; the transmission shaft 2 axially movably connected to the guide sleeve 32 is used as the movable transmission shaft 2, and a radial through hole is provided on the end, and the pin 33 passes through the radial through hole and is slidably arranged in the strip groove 321, forming a sliding connection structure with the strip groove 321 as a slide rail to guide the axial movement of the transmission shaft 2. The movable transmission shaft 2 can freely move along the axial direction of the guide sleeve 32 through the cooperation of the pin 33 and the strip groove 321, and can also ensure that the guide sleeve 32 and the movable transmission shaft 2 rotate synchronously.

[0031] In this embodiment, Figure 2 As shown, the compensation mechanism 3 also includes a first gasket 34, which is located in the guide sleeve 32 and includes a first gasket 341 and a threaded head 342. An axial threaded hole is provided at the end of the movable transmission shaft 2 located on the inner side of the guide sleeve 32, and a threaded head 342 is provided on one side of the first gasket 341. The threaded head 342 is embedded in the threaded hole and is threadably matched with the threaded hole so that the side of the first gasket 341 fits the end of the movable transmission shaft 2, and the other side of the first gasket 341 is used to abut the end of the elastic member 31.

[0032] In this embodiment, the guide sleeve 32 is axially movably connected to the end of one transmission shaft 2 and fixedly connected to the other transmission shaft 2. The fixedly connected transmission shaft 2 serves as the fixed transmission shaft 2. Radial through holes are provided at corresponding positions of the end of the fixed transmission shaft 2 and the guide sleeve 32, and fixation is achieved by inserting pins 4 into each radial through hole.

[0033] In this embodiment, the compensation mechanism 3 further includes a second cushion block 35, which is disposed in the guide sleeve 32. The inner hole of the guide sleeve 32 is a stepped hole. The diameter of the hole section accommodating the second cushion block 35 is larger than the diameter of the hole section connected to the fixed transmission shaft 2 to form a step surface. One side of the second cushion block 35 is attached to the step surface of the stepped hole, and the other side is used to abut the end of the elastic member 31. Specifically, the inner hole of the guide sleeve 32 can also be provided with a hole section with a smaller diameter between the hole section accommodating the second cushion block 35 and the hole section connected to the fixed transmission shaft 2 to provide a larger step surface for the second cushion block 35, thereby ensuring the connection stability of the second cushion block 35.

[0034] In this embodiment, the second gasket 35 includes a second gasket 351, and the second gasket 351 is used to fit the step surface and abut the elastic member 31. The elastic member 31 is specifically a spring, and the diameter of the spring is slightly smaller than the diameter of the first gasket 341 and the second gasket 351. The first gasket 341 and the second gasket 351 are provided with a protrusion 352 on the surface for abutting the spring, and the protrusion 352 is stuck in the spiral of the spring to prevent the spring from shifting.

[0035] In this embodiment, the coupling 1 is a cross block universal coupling structure, and the connection between the coupling 1 and the transmission shaft 2 is fixed by a pin 4. In this embodiment, the pin 4 can be a fastener such as a taper pin.

[0036] In this embodiment, the length of the transmission shaft 2 can be determined in detail according to the operating conditions of the transmission shaft. Specifically, it can be preliminarily designed according to its input torque, and the critical speed calculation and other verifications can be performed to finally determine the length of the transmission shaft. The numerical determination process of the transmission shaft size is a conventional determination process of the shaft system, which will not be repeated here. The floating range of the compensation mechanism 3 is 30mm to 100mm, that is, the floating of the compensation mechanism 3 makes the difference between the maximum and minimum values ​​of the distance change between the two transmission shafts 2 within the range of 30mm to 100mm. This distance is arranged so that it is difficult to compensate for the axial deviation due to being too short, but not too long to affect the transmission effect.

[0037] The transmission shaft structure of this embodiment can be used in the field of mechanical transmission technology of nuclear chemical equipment. Specifically, it can be said to be a new transmission shaft structure that adapts to large eccentricity working conditions. The device modifies the original long shaft rigid connection structure into two shaft sections, front and rear, which are connected in the middle by a compensation mechanism 3. The compensation mechanism 3 has a built-in spring, which can make the transmission shaft structure automatically compensate for axial displacement in the case of eccentric installation, thereby offsetting the additional bending moment and vibration caused by the eccentricity of the shaft system as much as possible. The structure is safe and reliable, has stable performance, and is easy to install and replace.

[0038] Specifically, the transmission shaft structure includes two cross-block universal couplings 1, a movable transmission shaft 2, a compensation mechanism 3, a fixed transmission shaft 2, a pin 4, etc. The two couplings 1 can be connected to the equipment end and the power source end respectively according to specific use requirements; the movable transmission shaft 2 and the fixed transmission shaft 2 can be set to different lengths according to actual use requirements; the taper pin 4 is used to connect and fix the coupling 1 and the movable transmission shaft 2, and the coupling 1 and the fixed transmission shaft 2; the compensation mechanism 3 is the main executive component for improving the eccentricity resistance of the universal coupling shaft system, reducing the additional bending moment of the shaft system, and increasing the service life of the universal coupling.

[0039] The compensation mechanism 3 is the main mechanism for offsetting the additional bending moment and vibration caused by the eccentricity of the shaft system, and is composed of a guide sleeve 32, a spring, a pin 33, a pin 4, a first cushion block 34, and a second cushion block 35. By increasing the deflection of the transmission shaft through the elastic element of the compensation mechanism 3, the impact resistance of the transmission shaft can be increased, and the additional load caused by misalignment can also be reduced. The front and rear cross block universal joints 1 can be connected to the power source end and the equipment end respectively according to the needs to realize the input of the power source.

[0040] The guide sleeve 32 is the main component of the compensation mechanism. A tapered pin 4 is used at the front end of the guide sleeve 32 to achieve the connection and fixation between the fixed transmission shaft 2 and the guide sleeve 32; the connection and fixation between the movable transmission shaft 2 and the guide sleeve 32 is achieved by the pin 33. Secondly, the movable transmission shaft 2 can drive the pin 33 to move freely axially in the strip groove 321 of the guide sleeve 32 according to the actual transmission operation situation, and the axial movement is controlled by the spring; the spring is fixed on the first cushion block 34 and the second cushion block 35 respectively.

[0041] During operation, due to the eccentricity caused by the installation at the power source end or the equipment end, the cone pin 4 connecting the coupling 1 and the fixed transmission shaft 2 or the cone pin 4 connecting the movable transmission shaft 2 and the coupling 1 will be axially displaced, so that the cone pin 4 will produce a large stress concentration at the connection point between the shaft and the coupling 1, and long-term operation will cause the failure of the cone pin. The existence of the compensation mechanism 3 allows automatic axial displacement compensation in the case of eccentric installation, reducing the stress concentration of the cone pin connecting the coupling and the transmission shaft, thereby increasing the impact resistance of the transmission shaft and reducing the additional load caused by misalignment.

[0042] The transmission shaft structure of this embodiment has the following advantages:

[0043] (1) The transmission shaft has a simple and reliable structure. Different from the traditional long shaft rigid connection, the transmission shaft adopts a flexible connection with an intermediate compensation mechanism 3, which maximizes the ability of the universal joint shaft system to resist eccentricity, reduces the additional bending moment caused by the eccentricity of the shaft system, and increases the service life of the universal joint.

[0044] (2) The compensation mechanism has a built-in spring, and a sliding groove (i.e., a strip groove 321) that can move in the axial direction is provided on the guide sleeve 32. The rear axle (i.e., the movable transmission shaft 2) is connected to the guide sleeve 32 through a pin 33, and can move freely in the axial direction according to the operation of the transmission shaft 2 to release the axial displacement. By increasing the deflection of the transmission shaft 2 through the elastic element of the long-axis compensation structure, the impact resistance of the transmission shaft 2 can be increased, and the additional load caused by misalignment can be reduced, thereby increasing the service life of the transmission shaft structure.

[0045] Example 2

[0046] The radioactive material processing equipment of this embodiment can be a spent fuel assembly shearing machine, a waste cladding flipping and dumping device and other equipment. The equipment specifically includes a power device, a driven device and the transmission shaft structure in Example 1. The driven device is arranged inside the hot chamber and is used to process radioactive materials. The power equipment is arranged outside the hot chamber. The power shaft of the power equipment passes through the hot chamber wall and is introduced into the hot chamber. The end of the power shaft located in the hot chamber is connected to the driven shaft of the driven device through the transmission shaft structure, thereby providing a power source for the driven device.

[0047] 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 skilled 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 shaft structure, characterized in that: It comprises a coupling (1), a transmission shaft (2) and a compensation mechanism (3). The transmission shafts (2) are provided with two, and the two transmission shafts (2) are arranged end to end on the same axis. The non-opposite ends of the two transmission shafts (2) are respectively connected to the power shaft and the driven shaft via a coupling (1). The opposite ends of the two transmission shafts (2) are connected in an axial floating manner via a compensation mechanism (3) so as to compensate for the installation deviation of the power shaft and the driven shaft by floating.

2. The transmission shaft structure according to claim 1, characterized in that: The compensation mechanism (3) comprises an elastic member (31), which is arranged along the axial direction of the transmission shaft (2) and connected between the opposite ends of the two transmission shafts (2) to achieve axial floating of the two transmission shafts (2).

3. The transmission shaft structure according to claim 2, characterized in that: The compensation mechanism (3) further comprises a guide sleeve (32), The guide sleeve (32) is sleeved on the outside of the opposite ends of the two transmission shafts (2) and is movably connected to the end of at least one of the transmission shafts (2) along the axial direction. The elastic member (31) is arranged inside the guide sleeve (32).

4. The transmission shaft structure according to claim 3, characterized in that: The compensation mechanism (3) further comprises a pin (33), The guide sleeve (32) is provided with a strip groove (321) penetrating the wall surface of the guide sleeve (32), and the length direction of the strip groove (321) is arranged along the axial direction of the transmission shaft (2). The transmission shaft (2) movably connected to the guide sleeve (32) along the axial direction is used as a movable transmission shaft (2), and a radial through hole is opened on the end thereof. The pin (33) passes through the radial through hole and is slidably arranged in the strip groove (321) to guide the axial movement of the transmission shaft (2).

5. The transmission shaft structure according to claim 4, characterized in that: The compensation mechanism (3) further comprises a first cushion block (34), wherein the first cushion block (34) is located in the guide sleeve (32) and comprises a first gasket (341) and a threaded head (342). The end of the movable transmission shaft (2) located inside the guide sleeve (32) is provided with an axial threaded hole. A threaded head (342) is provided on one side of the first gasket (341), and the threaded head (342) is embedded in the threaded hole and threadably matched with the threaded hole, so that the side of the first gasket (341) fits the end of the movable transmission shaft (2). The other side surface of the first gasket (341) is used to abut against the end of the elastic member (31).

6. The transmission shaft structure according to claim 3, characterized in that: The guide sleeve (32) is movably connected to the end of one transmission shaft (2) along the axial direction, and is fixedly connected to the other transmission shaft (2). The fixedly connected transmission shaft (2) serves as a fixed transmission shaft (2). The end of the fixed transmission shaft (2) and the corresponding positions of the guide sleeve (32) are both provided with radial through holes, and fixation is achieved by means of pins (4) penetrating into the radial through holes.

7. The transmission shaft structure according to claim 6, characterized in that: The compensation mechanism (3) further comprises a second cushion block (35), wherein the second cushion block (35) is arranged in the guide sleeve (32). The inner hole of the guide sleeve (32) is a stepped hole, and the diameter of the hole section accommodating the second cushion block (35) is larger than the diameter of the hole section connecting and fixing the transmission shaft (2), so as to form a stepped surface. One side surface of the second cushion block (35) is fitted on the step surface of the stepped hole, and the other side surface is used to abut against the end of the elastic member (31).

8. The transmission shaft structure according to claim 1, characterized in that: The coupling (1) is a cross block universal coupling structure, and the connection between the coupling (1) and the transmission shaft (2) is fixed by a pin (4).

9. The transmission shaft structure according to claim 1, characterized in that: The floating range of the compensation mechanism (3) is 30 mm to 100 mm.

10. A radioactive material processing device, characterized in that: The invention comprises a power device, a driven device and a transmission shaft structure as claimed in any one of claims 1 to 9, The driven device is arranged inside the hot chamber and is used to process radioactive materials. The power device is arranged outside the hot chamber, and the power shaft of the power device passes through the hot chamber wall and is introduced into the hot chamber, and the end of the power shaft located in the hot chamber is connected to the driven shaft of the driven device through the transmission shaft structure, thereby providing a power source for the driven device.

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