Nuclear power plant motor maintenance and landing equipment

Abstract

The present invention discloses a nuclear power plant motor maintenance lifting and lowering device, which includes a fixing mechanism, a two-stage lifting mechanism, a translation mechanism, and a control mechanism. The fixing mechanism is used to fix the motor. The two-stage lifting mechanism includes a first lifting assembly and a second lifting assembly. The translation mechanism is connected to the first lifting assembly and is used to drive the two-stage lifting mechanism and the fixing mechanism to perform translational movement. The control mechanism is communicatively connected to the two-stage lifting mechanism and the translation mechanism and is used to control the movement of the two-stage lifting mechanism and the translation mechanism. The nuclear power plant motor maintenance lifting and lowering device can improve the quality and reliability of maintenance, reduce the weight and number of original tools, realize the automation of motor disassembly and assembly, reduce manpower input, improve the automation and intelligence level of equipment, significantly improve operating efficiency, and realize the disassembly and assembly of the motor while ensuring the safety of personnel and equipment, avoiding the risk of collision and damage during the motor disassembly and assembly process.

Description

Technical Field

[0001] The invention relates to the field of nuclear power plant maintenance equipment, and in particular to a nuclear power plant motor maintenance take-off and landing device. Background Art

[0002] The current state of motor maintenance equipment in the nuclear power industry remains largely simple, lacking specialized maintenance equipment. This is especially true for large-scale motor maintenance, where workstation transitions still rely on manual hoists and manual handling. The comprehensive application of maintenance equipment is still lacking, and on-site maintenance work demands reliable tooling to meet on-site maintenance needs.

[0003] Due to the heavy weight of the motors and limited on-site space, regular disassembly and maintenance of the air-cooled units' motors is not feasible. Cutting the units for disassembly and assembly would significantly impact the unit's structural stability and vibration characteristics, necessitating a device designed to accommodate on-site conditions. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a nuclear power plant motor maintenance take-off and landing device.

[0005] The technical solution adopted by the present invention to solve the technical problem is: constructing a nuclear power plant motor maintenance lifting and lowering device, which includes: a fixing mechanism for fixing the motor, a two-stage lifting mechanism, a translation mechanism and a control mechanism;

[0006] The two-stage lifting mechanism is provided with an accommodating cavity for accommodating the motor, and the two-stage lifting mechanism includes a first lifting assembly and a second lifting assembly in transmission connection with the first lifting assembly;

[0007] The second lifting assembly is in transmission connection with the fixing mechanism and is used to drive the fixing mechanism to move up and down; the first lifting assembly is provided on the lower side of the second lifting assembly and is used to drive the second lifting assembly to move up and down;

[0008] The translation mechanism is connected to the first lifting assembly and is used to drive the two-stage lifting mechanism and the fixing mechanism to perform translational movement;

[0009] The control mechanism is in communication connection with both the two-stage lifting mechanism and the translation mechanism, and is used to control the movement of the two-stage lifting mechanism and the translation mechanism.

[0010] In some embodiments, the translation mechanism includes a base, a pair of first guide rails provided on the base, a translation platform provided on the pair of first guide rails, and a translation drive device for driving the translation platform to move on the first guide rails.

[0011] In some embodiments, the first lifting assembly includes a plurality of fixed seats connected to the translation platform, a first transmission rod, a first transmission wheel, a first lifting driver, and a first transmission belt;

[0012] The first transmission rod is rotatably connected to the fixing seat, and the first transmission wheel is fixedly connected to one end of the first transmission rod;

[0013] The first transmission wheel is in transmission connection with the output end of the first lifting driver via the first transmission belt, and a first locker for locking the first transmission belt is further provided between the first transmission wheel and the output end of the first lifting driver.

[0014] In some embodiments, the second lifting assembly includes a plurality of first transmission seats transmission-connected to the first transmission rod, a lifting platform, a fastening seat, a second transmission rod, a second transmission wheel, a second lifting driver, and a second transmission belt;

[0015] The first transmission rod is connected to the lifting platform through the first transmission seat to drive the lifting platform to move up and down;

[0016] The second transmission rod is rotatably connected to the fastening seat, and the second transmission rod is fixedly connected to the second transmission wheel.

[0017] The second transmission wheel is in transmission connection with the output end of the second lifting driver via the second transmission belt, and a second locker for locking the second transmission belt is further provided between the second transmission wheel and the output end of the second lifting driver.

[0018] In some embodiments, the lifting platform is provided with a guide hole for the motor to pass through, and the translation platform is provided with a through hole corresponding to the guide hole;

[0019] The axial space of the guide hole forms the accommodating cavity.

[0020] In some embodiments, a manual drive assembly is further included, which includes a first manual drive connected to the translation platform, a second manual drive connected to the first transmission wheel, and a third manual drive connected to the second transmission wheel.

[0021] In some embodiments, the fixing mechanism comprises a locking clamp detachably connected to the motor and a second transmission seat connected to the locking clamp;

[0022] The second transmission rod is in transmission connection with the second transmission seat to drive the fixing mechanism to move up and down.

[0023] In some embodiments, a positioning plate is further included, and the positioning plate is arranged on an end of the first transmission rod away from the translation platform.

[0024] In some embodiments, the image acquisition component and the rangefinder are also included

[0025] The image acquisition component includes a pan-tilt platform provided on the positioning plate and an image acquisition device provided on the pan-tilt platform for acquiring an overall environment image.

[0026] In some embodiments, the control mechanism includes a first displacement sensor, a second displacement sensor, a third displacement sensor, and a motion controller;

[0027] The first displacement sensor is used to measure the lifting height of the fixing mechanism;

[0028] The second displacement sensor is used to measure the lifting height of the lifting platform;

[0029] The third displacement sensor is used to measure the moving distance of the translation platform;

[0030] The motion controller is in communication with the first displacement sensor, the second displacement sensor, and the third displacement sensor to control the lifting and lowering of the fixing mechanism and the two-stage lifting mechanism and the movement of the translation mechanism.

[0031] The implementation of the present invention has the following beneficial effects: the nuclear power plant motor maintenance lifting and lowering device includes a fixing mechanism, a two-stage lifting mechanism, a translation mechanism, and a control mechanism. The fixing mechanism is used to fix the motor. The two-stage lifting mechanism includes a first lifting assembly and a second lifting assembly. The second lifting assembly is connected to the fixing mechanism and is used to drive the fixing mechanism to rise and fall. The first lifting assembly is arranged on the lower side of the second lifting assembly and is used to drive the second lifting assembly to rise and fall. The translation mechanism is connected to the first lifting assembly and is used to drive the two-stage lifting mechanism and the fixing mechanism to perform translational movement. The control mechanism is communicatively connected to the two-stage lifting mechanism and the translation mechanism and is used to control the movement of the two-stage lifting mechanism and the translation mechanism. The nuclear power plant motor maintenance lifting and lowering device can improve the maintenance quality and maintenance reliability, reduce the weight and number of original tools, realize the automation of motor disassembly and assembly, reduce manpower input, improve the automation and intelligence level of equipment, significantly improve work efficiency, and enable the motor to be disassembled and assembled in a limited space while ensuring the safety of personnel and equipment, avoiding the risk of collision and damage during the motor disassembly and assembly process. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can derive other relevant drawings based on these drawings without inventive effort. In the drawings:

[0033] Figure 1 is a schematic structural diagram of a nuclear power plant motor maintenance take-off and landing device in some embodiments of the present invention;

[0034] Figure 2 It is a schematic structural diagram of another direction of the nuclear power plant motor maintenance and landing device in some embodiments of the present invention. DETAILED DESCRIPTION

[0035] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings and are constructed and operated in specific directions. They are only for the convenience of describing the technical solution and do not indicate that the devices or components referred to must have specific directions. Therefore, they should not be understood as limiting the present invention.

[0036] It should also be noted that, unless otherwise clearly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "third", etc. may explicitly or implicitly include one or more of such features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0037] See also Figure 1 and Figure 2, in some embodiments of the present invention, is a nuclear power plant motor maintenance lifting and lowering device. It is suitable for motor assembly and disassembly operations in confined spaces, for motor assembly and disassembly operations in nuclear-grade air-cooled units, and for lifting heavy objects weighing less than 400 kg. It includes a fixing mechanism 1, a two-stage lifting mechanism 2, a translation mechanism 3, and a control mechanism 4. The fixing mechanism 1 is used to fix the motor 5. The two-stage lifting mechanism 2 is provided with a chamber 23 for accommodating the power supply 5. The two-stage lifting mechanism 2 includes a first lifting assembly 21 and a second lifting assembly 22. The second lifting assembly 22 is transmission-connected to the fixing mechanism 1 for driving the fixing mechanism 1 up and down. The first lifting assembly 21 is located below the second lifting assembly 22 for driving the second lifting assembly 22 up and down. The translation mechanism 3 is connected to the first lifting assembly 21 for driving the two-stage lifting mechanism 2 and the fixing mechanism 1 to perform translational motion. The control mechanism 4 is communicatively connected to both the two-stage lifting mechanism 2 and the translation mechanism 3 for controlling the motion of the two-stage lifting mechanism 2 and the translation mechanism 3.

[0038] In some embodiments, the translation mechanism 3 includes a base 31, a pair of first guide rails 32 disposed on the base 31, a translation platform 33 disposed on the pair of first guide rails 32, and a translation drive 34 for driving the translation platform 33 on the first guide rails 32. It is understood that the base 31 may be composed of two parallel bottom blocks or a single unit, which may be connected to the ground via ground spikes or other fasteners. The first guide rails 32 provide guidance for the translation platform 33, ensuring smoother movement and preventing wobbling. Furthermore, the translation platform 33 is provided with a through-hole 331 through which the power supply 5 passes. The diameter of the through-hole 331 is larger than that of the motor 5. Preferably, the translation drive 34 is a servo motor. In other embodiments, the translation drive 34 may also be a stepper motor, a pneumatic device, or other drive device, without specific limitation.

[0039] Furthermore, the first lifting assembly 21 includes a plurality of fixed seats 211 connected to the translation platform 33, a first transmission rod 212, a first transmission wheel 213, a first lifting driver 214, and a first transmission belt 215. The first transmission rod 212 is rotationally connected to the fixed seat 211, and the first transmission wheel 213 is fixedly connected to one end of the first transmission rod 212. The first transmission wheel 213 is transmission-connected to the output end of the first lifting driver 214 via the first transmission belt 215. A first locking device 216 is also provided between the first transmission wheel 213 and the output end of the first lifting driver 214. It is understood that the fixed seat 211 is used to fix the axial direction of the first transmission rod 212 and can be connected to the translation platform 33 via a fastener. The first transmission rod 212 can preferably be a screw, which has the characteristics of high precision, reversibility, and high efficiency, and can convert rotational motion into linear motion, thereby driving the second lifting assembly 22 to perform vertical linear motion. In this embodiment, the number of fixed bases 211, first transmission rods 212, and first transmission wheels 213 is the same, namely four. They are evenly arranged around the upper end of the translation platform 33, which can ensure the structural force balance of the first lifting assembly 21 and ensure stability during the lifting process. In other embodiments, the number of fixed bases 211, first transmission rods 212, and first transmission wheels 213 can also be other numbers, as long as they provide sufficient stability and strength for lifting, and are not specifically limited here.

[0040] The first transmission belt 215 can preferably be a belt, the first lifting actuator 214 can preferably be a pneumatic motor, and the first transmission wheel 213 can preferably be a gear. In other embodiments, the first transmission belt 215 can also be a chain, the first lifting actuator 214 can also be a servo motor or a hydraulic motor, and the first transmission wheel 213 can be a sprocket. These can be adjusted according to actual conditions and are not specifically limited here. In addition, the first locking device 216 is used to adjust the tension of the first transmission belt 215, thereby locking the first transmission belt 215 and ensuring the stability and firmness of the first transmission belt 215 during the transmission process.

[0041] In some embodiments, the second lifting assembly 22 includes a first transmission seat 221, a lifting platform 222, a fastening seat 223, a second transmission rod 224, a second transmission wheel 225, a second lifting driver 226 and a second transmission belt 227, which are transmission-connected to the first transmission rod 212. The first transmission rod 212 is connected to the lifting platform 222 through the first transmission seat 221, thereby driving the lifting platform 222 to rise and fall. The second transmission rod 224 is rotationally connected to the fastening seat 223, and the second transmission rod 224 is fixedly connected to the second transmission wheel 225. The second transmission wheel 225 is transmission-connected to the output end of the second lifting driver 226 through the second transmission belt 227, and a second locker 228 for locking the second transmission belt 227 is also provided between the second transmission wheel 225 and the output end of the second lifting driver 226. As will be understood, the first transmission rod 212 is threadedly connected to the first transmission base 221. The lifting platform 222 is provided with a guide hole 2221, positioned opposite the through-hole 331. This guide hole 2221 can be used to guide the motor 5. When the motor is lowered by the nuclear power plant motor maintenance and lifting device, it passes through the guide hole 2221 and the through-hole 331. The axial space of the guide hole 2221 forms the accommodating chamber 23. The structure and transmission principle of the second lifting assembly 22 are consistent with those of the first lifting assembly 21 and will not be further described here.

[0042] Furthermore, the fixing mechanism 1 includes a locking card 12 that is detachably connected to the motor 5 and a second transmission seat 13 connected to the locking card 12. The second transmission rod 224 is in transmission connection with the second transmission seat 13 to drive the fixing mechanism 1 to rise and fall. It can be understood that the upper end of the motor can be a coupling, which is used to connect to the motor 5 to fix the motor 5. The locking card 12 and the coupling can be connected by fasteners. In this embodiment, the number of the locking cards 12 is four, and they are respectively connected to the four second transmission seats 13 by fasteners. In other embodiments, the number of the locking cards 12 can be adjusted according to actual conditions and is not specifically limited here.

[0043] Preferably, the nuclear power plant motor maintenance lifting and lowering device may also include a manual drive component 6, which includes a first manual drive 61 driven and connected to the translation platform 33, a second manual drive 62 driven and connected to the first transmission wheel 213, and a third manual drive 63 driven and connected to the second transmission wheel 225. The first manual drive 61 is used to control the movement of the translation platform 33, the second manual drive 62 is used to control the lifting and lowering of the lifting platform 222, and the third manual drive 63 is used to control the lifting and lowering of the fixing mechanism 1.

[0044] It can be understood that the motor maintenance lifting and lowering device of the nuclear power plant is divided into two stages of lifting and lowering. First, the second transmission rod 224 is connected to the motor 5 through the locking clamp 12 for fixation to provide support, and then the second lifting driver 226 is started to drive the second transmission belt 227 and the second transmission rod 224 to rotate through the second transmission wheel 225, thereby realizing the descent of the motor 5. After descending to a certain height, the first lifting driver 214 is started, and the same principle drives the lifting platform 222 to descend to the appropriate position. Finally, the motor 5 is transported out of the site through the translation mechanism 3. When the motor 5 needs to be reinstalled, just follow the above steps in reverse.

[0045] Preferably, the control mechanism 4 includes a motion controller, a first displacement sensor 41, a second displacement sensor 42, a third displacement sensor 43, and an early warning device. The first displacement sensor 41, the second displacement sensor 42, the third displacement sensor 43, and the early warning device are all communicatively connected to the motion controller. The first displacement sensor 41 is used to measure the lifting height of the fixed mechanism 1, the second displacement sensor 42 is used to measure the lifting height of the lifting platform 222, and the third displacement sensor 43 is used to measure the movement distance of the translation platform 33 on the first guide rail 32. The early warning device is used to issue an early warning signal when the lifting height of the fixed mechanism 1, the lifting height of the lifting platform 222, and the movement distance of the translation platform 33 on the first guide rail 32 reach preset values. The first displacement sensor 41 can be provided on the fastening seat 223, the second displacement sensor 42 is provided on the fixed seat 211, and the third displacement sensor 43 is provided on the first guide rail 32.

[0046] The nuclear power plant motor maintenance lifting and lowering device further includes a positioning plate 71, which is disposed on the end of the first transmission rod 212 away from the translation platform 33. Preferably, the nuclear power plant motor maintenance lifting and lowering device further includes an image acquisition assembly 8, which includes a pan-tilt platform 81 disposed on the positioning plate 71 and an image acquisition device 82 disposed on the pan-tilt platform 81 for acquiring an image of the overall environment. The image acquisition device 82 can also be used to observe the overall environment. Specifically, the pan-tilt platform 81 can drive the image acquisition device 82 to rotate 360 ​​degrees and tilt up and down, allowing the image acquisition device 82 to rotate according to actual needs during operation, facilitating operation at the optimal angle, making the camera body's imaging more real-time and comprehensive, and tilting up and down allows the operator to observe the status of the upper tool and the surrounding conditions as much as possible.

[0047] Furthermore, the nuclear power plant motor maintenance lifting and lowering device includes a rangefinder 9 arranged on the positioning plate 71 for measuring the gap distance between the motor 5 and the positioning plate 71, so as to avoid damage to the motor when entering the nuclear power plant motor maintenance lifting and lowering device due to too small a gap. At the same time, the motion controller can also adjust the position of the nuclear power plant motor maintenance lifting and lowering device according to the gap distance data to ensure the stability of the nuclear power plant motor maintenance lifting and lowering device during operation.

[0048] In some embodiments, the control mechanism 4 may further include a load sensor disposed on the lifting platform 222 , wherein the load sensor is configured to measure the weight of the motor 5 and transmit the weight value to the motion controller for display.

[0049] It is understandable that the motor maintenance and take-off and landing device of the nuclear power plant has three functional modes of operation, which can be switched according to the actual situation on site, as follows:

[0050] 1. Manual Function: The first manual actuator 61 controls the movement of the translating platform 33, the second manual actuator 62 controls the raising and lowering of the elevating platform 222, and the third manual actuator 63 controls the raising and lowering of the fixing mechanism 1. Clockwise rotation of the second or third manual actuator 62 raises the elevating platform 222 or fixing mechanism 1, while reverse rotation lowers them. If the power is off, the elevating platform 222 and fixing mechanism 1, as well as the translating platform 33, can be raised and lowered, respectively, according to site conditions.

[0051] 2. Semi-automatic function: The first displacement sensor 41, the second displacement sensor 42, and the third displacement sensor 43 installed on the motor maintenance lifting and lowering device of the nuclear power plant are used to respectively obtain the lifting height of the fixed mechanism 1, the lifting platform 222, and the translation distance of the translation platform 33. The operator can perform jog operations on the motion controller according to the above data, and perform jog operations on the lifting button and the translation button to achieve a semi-automatic movement effect. In case of an emergency, the emergency stop button can be pressed immediately to quickly cut off the power supply and quickly stop the machine.

[0052] 3. Fully Automatic Function: The first, second, and third displacement sensors 41, 42, and 43 installed on the motor maintenance and lifting device detect the height of the fixed mechanism 1 and the lifting platform 222, as well as the translation distance of the translation platform 33. Set values ​​are input into the motion controller based on on-site conditions, allowing the motor maintenance and lifting device to remove and install the motor 5 according to a predetermined trajectory. If the height of the lifting platform 222, the fixed mechanism 1, or the translation distance of the translation platform 33 exceeds the set value, the overload protection function is automatically activated, disconnecting the switch contacts and shutting off power for protection.

[0053] It can be understood that the nuclear power plant motor maintenance and landing device has the following beneficial effects:

[0054] 1. The nuclear power plant motor maintenance lifting and lowering device, through the use of automation devices, can achieve remote and fully automatic control, reducing costs, improving maintenance quality and reliability, reducing the weight and number of original tools, realizing the automation of the disassembly and assembly of the motor 5, reducing manpower input, and improving the automation and intelligence level of the equipment;

[0055] 2. The nuclear power plant motor maintenance lifting and lowering device is equipped with a two-stage lifting mechanism 2 and a translation mechanism 3, which can flexibly adjust the position of the motor 5 during the maintenance process to ensure convenience and stability during the maintenance process;

[0056] 3. The nuclear power plant motor maintenance lifting and lowering device significantly improves operational efficiency, enabling the disassembly and assembly of the motor 5 while ensuring the safety of personnel and equipment. This avoids the risk of collision and damage to the motor 5 during disassembly and assembly, and protects workers from unnecessary radiation exposure during on-site operations.

[0057] 4. A high-resolution image acquisition device 82 is used to facilitate remote viewing of the on-site working scene of the nuclear power plant motor maintenance take-off and landing device, and to take photos of the on-site status for evidence collection;

[0058] 5. The nuclear power plant motor maintenance lifting device is provided with a manual drive assembly 6, which enables the nuclear power plant motor maintenance lifting device to be operated in the event of a power outage or other emergency;

[0059] 6. The motor maintenance take-off and landing device of the nuclear power plant has three functional modes. The working modes of the three functional modes can be switched according to the actual situation on site, making it more flexible and adaptable to different scenarios.

[0060] It can be understood that the above embodiments only express the preferred implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several deformations and improvements can be made, all of which fall within the scope of protection of the present invention. Therefore, all equivalent changes and modifications made to the scope of the claims of the present invention should fall within the scope of coverage of the claims of the present invention.

Claims

1. A nuclear power plant motor maintenance take-off and landing device, characterized in that: include: A fixing mechanism (1) for fixing the motor (5), a two-stage lifting mechanism (2), a translation mechanism (3), and a control mechanism (4); The two-stage lifting mechanism (2) is provided with a receiving cavity (23) for receiving the motor (5), and the two-stage lifting mechanism (2) comprises a first lifting component (21) and a second lifting component (22) in transmission connection with the first lifting component (21); The second lifting component (22) is in transmission connection with the fixing mechanism (1) and is used to drive the fixing mechanism (1) to move up and down; the first lifting component (21) is provided on the lower side of the second lifting component (22) and is used to drive the second lifting component (22) to move up and down; The translation mechanism (3) is connected to the first lifting assembly (21) and is used to drive the two-stage lifting mechanism (2) and the fixing mechanism (1) to perform translational movement; The control mechanism (4) is in communication connection with the two-stage lifting mechanism (2) and the translation mechanism (3), and is used to control the movement of the two-stage lifting mechanism (2) and the translation mechanism (3); The translation mechanism (3) includes a translation platform (33), the second lifting assembly (22) includes a lifting platform (222), and the lifting platform (222) is provided with a guide hole (2221) for the motor (5) to pass through; The translation platform (33) is provided with a through hole (331) corresponding to the guide hole (331); The axial space of the guide hole (2221) forms the accommodating cavity (23).

2. The nuclear power plant motor maintenance lifting and lowering device according to claim 1, characterized in that: The translation mechanism (3) comprises a base (31), a pair of first guide rails (32) provided on the base (31), and a translation drive device (34) for driving the translation platform (33) to move on the first guide rails (32).

3. The nuclear power plant motor maintenance take-off and landing device according to claim 2, characterized in that: The first lifting assembly (21) includes a plurality of fixed seats (211) connected to the translation platform (33), a first transmission rod (212), a first transmission wheel (213), a first lifting driver (214), and a first transmission belt (215); Each of the fixing seats (211) is rotatably connected to the first transmission rod (212), and one end of each of the first transmission rods (212) is fixedly connected to the first transmission wheel (213); The first transmission wheel (213) is connected to the output end of the first lifting driver (214) through the first transmission belt (215), and a first locker (216) for locking the first transmission belt (215) is provided between the first transmission wheel (213) and the output end of the first lifting driver (214).

4. The nuclear power plant motor maintenance lifting and lowering device according to claim 3, characterized in that: The second lifting assembly (22) includes a plurality of first transmission seats (221) transmission-connected to the first transmission rod (212), a fastening seat (223), a second transmission rod (224), a second transmission wheel (225), a second lifting driver (226), and a second transmission belt (227); The first transmission rod (212) is connected to the lifting platform (222) via the first transmission seat (221), thereby driving the lifting platform (222) to move up and down; The second transmission rod (224) is rotatably connected to the fastening seat (223), and the second transmission rod (224) is fixedly connected to the second transmission wheel (225). The second transmission wheel (225) is connected to the output end of the second lifting driver (226) via the second transmission belt (227), and a second locker (228) for locking the second transmission belt (227) is provided between the second transmission wheel (225) and the output end of the second lifting driver (226).

5. The nuclear power plant motor maintenance take-off and landing device according to claim 4, characterized in that: The invention also includes a manual drive assembly (6), wherein the manual drive assembly (6) includes a first manual drive (61) drivingly connected to the translation platform (33), a second manual drive (62) drivingly connected to the first transmission wheel (213), and a third manual drive (63) drivingly connected to the second transmission wheel (225).

6. The nuclear power plant motor maintenance take-off and landing device according to claim 4, characterized in that: The fixing mechanism (1) comprises a locking clamp (12) detachably connected to the motor (5) and a second transmission seat (13) connected to the locking clamp (12); The second transmission rod (224) is in transmission connection with the second transmission seat (13).

7. The nuclear power plant motor maintenance take-off and landing device according to claim 6, characterized in that: It also includes a positioning plate (71), which is arranged on an end of the first transmission rod (212) away from the translation platform (33).

8. The nuclear power plant motor maintenance take-off and landing device according to claim 7, characterized in that: Also included is a graphics acquisition component (8) and a range finder (9); The image acquisition component (8) comprises a pan-tilt platform (81) provided on the positioning plate (71) and an image acquisition device (82) provided on the pan-tilt platform (81) for acquiring an overall environmental image.

9. The nuclear power plant motor maintenance take-off and landing device according to claim 4, characterized in that: The control mechanism (4) includes a first displacement sensor (41), a second displacement sensor (42), a third displacement sensor (43) and a motion controller; The first displacement sensor (41) is used to measure the lifting height of the fixing mechanism (1); The second displacement sensor (42) is used to measure the lifting height of the lifting platform (222); The third displacement sensor (43) is used to measure the moving distance of the translation platform (33); The motion controller is communicatively connected to the first displacement sensor (41), the second displacement sensor (42), and the third displacement sensor (43) to control the lifting and lowering of the fixing mechanism (1), the two-stage lifting mechanism (2), and the movement of the translation mechanism (3).

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