Movable equipment fixing device

Abstract

The invention relates to the technical field of nuclear power plant safety protection equipment, and discloses a movable equipment fixing device which comprises a device body, an upper moving unit is installed on the device body, an upper positioning insertion hole is formed in the upper moving unit, a positioning pin is arranged on movable equipment in a matched mode, and the positioning pin is suitable for being matched with the upper positioning insertion hole to be inserted and positioned; the lower fixing unit is fixedly installed on the device body, a lower electromagnetic adsorption assembly is installed on the lower fixing unit, and the movable equipment is suitable for being adsorbed and fixed to the electromagnetic adsorption assembly; and the bottom plate fixing unit is fixedly installed at the bottom of the device body, a wheel fixing and limiting mechanism is arranged in the bottom plate fixing unit, and wheels of the movable equipment are suitable for being matched with the wheel fixing and limiting mechanism for limiting. According to the movable equipment fixing device, through triple synergistic effects of mechanical positioning, electromagnetic adsorption and wheel limiting, sliding, shaking or toppling of the movable equipment in an earthquake can be effectively restrained, and the safety and stability of the equipment are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of safety protection equipment for nuclear power plants, and in particular to a device for fixing movable equipment. Background Art

[0002] Currently, metal-enclosed, armored high-voltage distribution cabinets are widely used in nuclear power projects. Nuclear-grade high-voltage distribution cabinets, in particular, power supply nuclear safety-related systems. These cabinets must maintain normal power supply and smooth switching operations in the event of tsunamis, earthquakes, and large aircraft impacts. Therefore, the secure and accessible transport carts, voltage test carts, and incoming high-voltage voltage transformer (PT) carts located near the high-voltage distribution cabinets within the nuclear island are particularly important, both during normal operations and during emergencies. They must meet certain seismic resistance requirements and ensure flexible and convenient access.

[0003] All Class 1E high-voltage distribution cabinets in the nuclear island of a nuclear power plant are subject to seismic resistance requirements. Currently, there are two methods for securing transfer carts in the distribution room: one is to secure them with a locking mechanism on the cart's wheels; the other is to secure them with chains to the distribution room's fixed structure. Both methods pose a risk of losing their secure hold in the event of severe vibration, causing them to tip over, slide, or shake, potentially colliding with other equipment and causing damage. Summary of the Invention

[0004] In view of this, the present invention provides a movable equipment fixing device to solve the problem in the prior art that movable equipment such as transfer carts, electrical test carts and incoming high-voltage voltage transformer carts in nuclear power plants may collide with other equipment and cause damage to the equipment when the external environment vibrates violently.

[0005] The present invention provides a device for fixing a movable device, comprising:

[0006] The device body is provided with an upper movable unit, the upper movable unit is provided with an upper positioning socket, and the movable device is provided with a positioning pin, the positioning pin is suitable for being plugged and positioned with the upper positioning socket;

[0007] A lower fixing unit is fixedly mounted on the device body, and a lower electromagnetic adsorption component is mounted on the lower fixing unit, and the movable device is suitable for being adsorbed and fixed to the electromagnetic adsorption component;

[0008] The bottom plate fixing unit is fixedly mounted on the bottom of the device body. A wheel fixing and limiting mechanism is provided in the bottom plate fixing unit. The wheels of the movable device are suitable for cooperating with the wheel fixing and limiting mechanism to limit the position.

[0009] The movable equipment securing device is designed for installation within nuclear power plants to secure movable equipment such as transfer carts, electrical test carts, and incoming high-voltage voltage transformer carts when idle. The movable equipment securing device integrates an upper movable unit, a lower securing unit, and a baseplate securing unit to achieve seismic stability. Specifically, when the movable equipment is pushed into the baseplate securing unit, its wheels engage the wheel retaining mechanism, mechanically preventing lateral movement. Simultaneously, a positioning pin on the device engages the positioning socket on the upper movable unit, triggering a microswitch signal. The control system activates the electromagnetic attraction component in the lower securing unit, which uses electromagnetic force to secure the equipment sideways. During operation, the electromagnetic attraction component automatically switches power based on the external power supply status and, in conjunction with a lithium battery pack, ensures continued attachment during power outages. Through the synergistic effects of mechanical positioning, electromagnetic attraction, and wheel restraints, the movable equipment securing device effectively prevents slipping, shaking, or tipping during earthquakes, enhancing its safety and stability.

[0010] In an optional embodiment, the lower electromagnetic adsorption component includes: a permanent magnet, one side of which is fixedly connected to an electromagnetic core, and an electromagnetic coil is wound around the electromagnetic core; a decompression elastic member, fixedly installed on the side of the permanent magnet facing away from the electromagnetic core, and the movable device is suitable for abutting and cooperating with the decompression elastic member.

[0011] The lower electromagnetic adsorption assembly consists of a permanent magnet, an electromagnet core, an electromagnetic coil, and a decompression elastic member. In the de-energized state, the permanent magnet uses a weak magnetic force to adsorb the side of the movable device, forming a preliminary fixation. When powered by an external power supply, the electromagnetic coil is energized to generate a strong electromagnetic field, which works in conjunction with the electromagnet core to significantly enhance the adsorption force. The decompression elastic member contacts the surface of the device, compressing the internal spring during the adsorption process to cushion vibrations and shocks. Upon release, the spring resets to avoid rigid collisions. During separation, a reverse current is passed through the electromagnetic coil to offset the permanent magnet's magnetic field, allowing the movable device to be released. The cooperation between the permanent magnet and the electromagnetic coil enables automatic adsorption and automatic detachment of the movable device.

[0012] In an optional embodiment, the decompression elastic member includes a rubber pad body and a spring body. The rubber pad body is provided with a mounting cavity, and the spring body is embedded and mounted in the mounting cavity. The decompression elastic member adopts a layered design in which the rubber pad body wraps the spring body. The rubber pad directly contacts the surface of the device, providing flexible support. The spring is embedded in the internal cavity of the rubber pad. When under pressure, it contracts to store energy and elastically returns to its original position after the external force disappears. The spring and rubber work together to adapt to vibrations of varying intensities and prevent the device from being dislodged from its fixed position due to instantaneous impact.

[0013] In an optional embodiment, the baseplate fixing unit is further provided with a guide rail for guiding the wheels of the movable device into a fixed position. The guide rail of the baseplate fixing unit employs a concave structure, guiding the wheels of the handcart along a specific path into a fixed position. Limit blocks are provided on both sides of the guide rail to prevent lateral deviation of the wheels. The guide rail constrains the direction of wheel movement, ensuring quick and accurate alignment of the handcart and reducing manual adjustment time.

[0014] In an optional embodiment, a travel limit micro switch is installed in the positioning socket. When the positioning pin is inserted into the socket to a set depth, the switch triggers a signal to notify the control system to start the electromagnetic adsorption process, thereby realizing automatic control.

[0015] In an optional embodiment, a pair of clamping positioning plates are provided in the wheel fixing and limiting mechanism, and pressure sensors are installed on the facing surfaces of the pair of clamping positioning plates. The clamping positioning plates are fixedly installed on the driving end of the driving member, and the driving member is suitable for driving the pair of clamping positioning plates to move closer to or away from each other.

[0016] In the wheel lock and limit mechanism, a mechanical, bidirectional hydraulic lever pushes a pair of clamping plates toward each other, clamping the two sides of the wheel. A pressure sensor monitors the clamping force in real time to detect wheel position. The synergistic effect of the wheel lock and limit mechanism's mechanical clamping and the electromagnetic attraction of the lower electromagnetic attraction assembly enhances seismic redundancy and improves the stability of the mobile device when stationary.

[0017] In an optional embodiment, the driving element is a mechanical bidirectional hydraulic rod, one end of which is fixedly mounted to the base plate fixing unit and the other end is fixedly connected to the clamping positioning plate. This hydraulic rod offers stable power transmission and strong resistance to vibration interference, making it suitable for harsh environments such as nuclear power plants and capable of withstanding repeated operation in high-frequency vibration environments.

[0018] In an optional embodiment, an incoming PT trolley fixing unit is further installed between the base plate fixing unit and the lower fixing unit, and a trolley electromagnetic adsorption component is installed on the incoming PT trolley fixing unit, and the trolley electromagnetic adsorption component is suitable for cooperating with the trolley for adsorption connection.

[0019] In an optional embodiment, the incoming PT trolley fixing unit is further provided with a trolley positioning socket, and the trolley body is provided with a trolley positioning pin, which is suitable for being plugged and positioned with the trolley positioning socket.

[0020] In an optional embodiment, a trolley limit micro switch is installed in the trolley positioning socket. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic structural diagram of a fixing device for a movable device provided in an embodiment of the present invention.

[0023] Figure 2 A schematic structural diagram of an upper moving unit provided in an embodiment of the present invention.

[0024] Figure 3 A schematic structural diagram of the cooperation between the upper movable unit and the adjustment guide rail provided in an embodiment of the present invention.

[0025] Figure 4 A side view of the upper movable unit and the adjustment rail provided in an embodiment of the present invention.

[0026] Figure 5 A schematic structural diagram of a lower fixing unit provided in an embodiment of the present invention.

[0027] Figure 6 A schematic structural diagram of the lower electromagnetic adsorption component provided in an embodiment of the present invention.

[0028] Figure 7 This is a structural diagram of the incoming PT trolley fixing unit provided in an embodiment of the present invention.

[0029] Figure 8 This is a structural diagram of a bottom plate fixing unit provided in an embodiment of the present invention.

[0030] Figure 9 A side view of the wheel fixing and limiting mechanism provided in an embodiment of the present invention.

[0031] Figure 10 A top view of the wheel fixing and limiting mechanism provided in an embodiment of the present invention.

[0032] Figure 11 A schematic structural diagram of a touch display screen provided by an embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1. Device body; 101. Touch screen; 102. Button; 103. Knob; 104. Power switch; 105. Power interface; 106. Lithium battery pack; 107. Electromagnetic adsorption controller; 108. Adjustment rail; 109. Steel support structure; 110. Charging and circuit switching module; 111. Camera;

[0035] 2. Upper moving unit; 201. Upper positioning jack; 202. Upper positioning pin hole; 203. Laser sensor; 204. Upper electromagnetic adsorption assembly; 205. Travel limit micro switch; 206. Driving wheel; 207. DC motor; 208. Aviation plug;

[0036] 3. Lower fixing unit; 301. Lower electromagnetic adsorption assembly; 3011. Permanent magnet; 3012. Electromagnetic core; 3013. Electromagnetic coil; 3014. Decompression elastic member; 30141. Rubber pad body; 30142. Spring body;

[0037] 4. Incoming PT trolley fixing unit; 401. Trolley electromagnetic adsorption assembly; 402. Trolley positioning socket; 403. Trolley positioning pin hole; 404. Trolley limit micro switch;

[0038] 5. Bottom plate fixing unit; 501. Wheel fixing limit mechanism; 5011. Inclined pedal; 5012. Inclined plate interlocking rod; 5013. Compression piston; 5014. Transmission gear; 5015. Gear conversion pull rod; 5016. Hydraulic rod transmission wire; 5017. Mechanical two-way hydraulic rod; 5018. Return spring; 5019. Clamping positioning plate; 50110. Pressure sensor; 502. Travel guide rail; 503. Limit block; 504. Bottom plate electromagnetic adsorption assembly; 505. Limit baffle; 506. Travel switch; 507. Cart positioning micro switch. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0040] The following combination Figures 1 to 11 , describing embodiments of the present invention.

[0041] According to an embodiment of the present invention, on the one hand, a movable device fixing device is provided, including a device body 1 and an upper moving unit 2, a lower fixing unit 3 and a bottom plate fixing unit 5 installed on the device body 1.

[0042] The upper movable unit 2 is mounted on the device body 1 for sliding movement along the height direction. The upper movable unit 2 is provided with an upper positioning socket 201, and the movable device is provided with a positioning pin, which is suitable for plugging and positioning with the upper positioning socket 201. The lower fixed unit 3 is fixedly mounted on the device body 1. The lower fixed unit 3 is installed with a lower electromagnetic adsorption component 301, and the movable device is suitable for adsorption and fixation with the electromagnetic adsorption component. The bottom plate fixed unit 5 is fixedly mounted on the bottom of the device body 1. The bottom plate fixed unit 5 is provided with a wheel fixing and limiting mechanism 501, and the wheels of the movable device are suitable for cooperating with the wheel fixing and limiting mechanism 501 to limit the position.

[0043] The movable device securing device is designed for installation within nuclear power plants to secure movable devices such as transfer carts, electrical test carts, and incoming high-voltage voltage transformer carts when idle. The movable device securing device integrates an upper movable unit 2, a lower securing unit 3, and a baseplate securing unit 5 within the device body 1 to achieve seismic-resistant securing. Specifically, when the movable device is pushed into the baseplate securing unit 5, its wheels engage the wheel securing and limiting mechanism 501, mechanically limiting the device from lateral displacement. Simultaneously, a positioning pin on the device engages the positioning socket of the upper movable unit 2, triggering a microswitch signal. The control system activates the electromagnetic attraction component of the lower securing unit 3, which uses electromagnetic force to secure the device's side. During operation, the electromagnetic attraction component automatically switches power based on the external power supply status and, in conjunction with the lithium battery pack 106, ensures continued attachment even during power outages. The synergistic effects of mechanical positioning, electromagnetic attraction, and wheel limiting effectively prevent the device from sliding, shaking, or tipping over during earthquakes, thereby improving the safety and stability of the movable device when idle.

[0044] In one embodiment, the lower electromagnetic attraction assembly 301 includes a permanent magnet 3011, an electromagnetic core 3012, an electromagnetic coil 3013, and a pressure-reducing elastic member 3014. The electromagnetic core 3012 is fixedly connected to one side of the permanent magnet 3011, and the electromagnetic coil 3013 is wound around the electromagnetic core 3012. The pressure-reducing elastic member 3014 is fixedly mounted on the side of the permanent magnet 3011 facing away from the electromagnetic core 3012, and the movable device can abut and cooperate with the pressure-reducing elastic member 3014.

[0045] The lower electromagnetic adsorption component 301 consists of a permanent magnet 3011, an electromagnet core 3012, an electromagnetic coil 3013 and a decompression elastic member 3014. In the off-state, the permanent magnet 3011 uses a weak magnetic force to adsorb the side of the movable device, forming a preliminary fixation; when the external power supply is supplied, the electromagnetic coil 3013 is energized to generate a strong electromagnetic field, which works in conjunction with the electromagnet core 3012 to greatly enhance the adsorption force. The decompression elastic member 3014 contacts the surface of the device and compresses the internal spring during the adsorption process to buffer vibration and impact. When released, the spring resets to avoid rigid collision. During separation, a reverse current is passed into the electromagnetic coil 3013 to offset the magnetic field of the permanent magnet 3011, allowing the movable device to be released. The cooperation between the permanent magnet 3011 and the electromagnetic coil 3013 realizes the automatic adsorption and automatic detachment of the movable device.

[0046] Specifically, the decompression elastic member 3014 includes a rubber pad body 30141 and a spring body 30142. The rubber pad body 30141 is provided with an installation cavity, and the spring body 30142 is embedded and installed in the installation cavity. During the adsorption process of the movable device to the lower electromagnetic adsorption group, the internal spring will be compressed, thereby buffering the vibration impact; when released, the spring will reset to avoid rigid collision. In particular, when separating, a reverse current is passed through the electromagnetic coil 3013 to offset the magnetic field of the permanent magnet 3011, so that the movable device is released smoothly. Through this cooperation between the permanent magnet 3011 and the electromagnetic coil 3013, the automatic adsorption and automatic detachment of the movable device can be achieved, greatly improving the convenience and automation of operation.

[0047] In one embodiment, a driving guide rail 502 is provided on the surface of the bottom plate fixing unit 5. The guide rail adopts an inner groove structure to guide the wheels of the movable device into a fixed position along a preset path. Raised limit blocks 503 are provided on both sides of the guide rail to limit the lateral deviation of the wheel. At the same time, a slope transition section is provided at the end of the guide rail to reduce the resistance of the wheel to enter. In some other embodiments, the driving guide rail 502 can adopt a modular design with adjustable width, and adapt to trolleys with different wheelbases by sliding the side walls of the guide rail. In addition, the surface of the guide rail can be covered with an anti-slip coating or inlaid with wear-resistant strips to enhance the friction between the wheel and the guide rail, further suppressing the risk of sliding during earthquakes; vibration sensors can also be integrated to monitor the contact status of the wheel and the guide rail in real time, and dynamically adjust the electromagnetic adsorption force or clamping force through feedback signals.

[0048] In one embodiment, a travel limit microswitch 205 is installed in the positioning socket. When the positioning pin of the movable device is inserted into the socket to a set depth, the trigger rod of the microswitch is compressed and closed, sending a positioning signal to the control system, thereby starting the power-on process of the electromagnetic adsorption component. In some other embodiments, the travel limit detection can also use a photoelectric sensor or a Hall sensor to improve the reliability of signal triggering through non-contact detection; or a multi-stage trigger switch can be added to feedback the insertion depth information in stages, for example, starting low-intensity adsorption when the positioning pin is partially inserted, and switching to full-power mode after full insertion to achieve progressive adsorption force control.

[0049] In one embodiment, a pair of clamping plates 5019 are disposed within the wheel fixing and limiting mechanism 501. Pressure sensors 50110 are mounted on opposing surfaces of the clamping plates 5019. The clamping plates 5019 are fixedly mounted on the driving end of a driver, which is adapted to drive the pair of clamping plates 5019 toward or away from each other. When the wheel enters the limiting area, a mechanical bidirectional hydraulic rod 5017 pushes the clamping plates 5019 to close. The pressure sensor 50110 monitors the clamping force in real time and provides feedback to the control system, dynamically adjusting the clamping force to prevent the wheel from falling off and locking due to external forces. In some other embodiments, the driver may also utilize an electric push rod or pneumatic actuator, achieving precise control of the clamping force via a servo motor or proportional valve. Anti-slip grooves or elastic pads may be added to the surface of the clamping plates 5019, such as a polyurethane or rubber layer covering the contact surface, to enhance clamping stability and prevent scratches on the wheel surface. In addition, the clamping positioning plate 5019 can be designed with an arc-shaped profile to fit the shape of the outer edge of the wheel, thereby increasing the contact area and dispersing the clamping stress, further improving the fixing reliability.

[0050] In one embodiment, a mechanical bidirectional hydraulic rod 5017 pushes a pair of clamping plates 5019 toward each other, clamping the two sides of the wheel. A pressure sensor 50110 monitors the clamping force in real time to detect whether the wheel is in place. The mechanical clamping of the wheel fixing and limiting mechanism 501 works in synergy with the electromagnetic attraction of the lower electromagnetic attraction assembly 301 to enhance seismic redundancy and improve the stability of the movable device when it is idle and fixed.

[0051] The driving element in this embodiment is a mechanical bidirectional hydraulic rod 5017, one end of which is fixedly mounted on the base plate fixing unit 5 and the other end is fixedly connected to the clamping positioning plate 5019. This hydraulic power transmission is stable and has strong vibration resistance, making it suitable for harsh environments such as nuclear power plants and can withstand repeated operation in high-frequency vibration environments.

[0052] In one embodiment, an incoming PT trolley fixing unit 4 is mounted between the base fixing unit 5 and the lower fixing unit 3. Mounted on this unit is a trolley electromagnetic attraction assembly 401, adapted to engage with the trolley through an adsorption connection. The structure of the trolley electromagnetic attraction assembly 401 is similar to that of the lower electromagnetic attraction assembly 301, but the attraction force parameters can be independently adjusted to suit the specific needs of the incoming trolley.

[0053] In one embodiment, a trolley positioning socket 402 is further provided on the incoming PT trolley fixing unit 4, and a trolley positioning pin is provided on the trolley body. The trolley positioning pin is suitable for plugging and positioning with the trolley positioning socket 402. By integrating a trolley limit microswitch 404 in the trolley positioning socket 402, a signal is triggered when the positioning pin is fully inserted into the trolley positioning socket 402, and the control unit accordingly starts the power-on process of the trolley electromagnetic adsorption component 401. As an alternative embodiment, the trolley positioning socket 402 can be designed as a tapered guide structure, with a tapered inner wall to assist the centering insertion of the positioning pin; or a magnetic guide element can be added to use magnetic attraction to assist the initial positioning of the trolley, reducing the difficulty of manual adjustment. In addition, the trolley limit microswitch 404 can adopt a redundant dual-contact design, and two trolley limit microswitches 404 can be installed in parallel in one trolley positioning socket 402 to ensure that the signal can still be reliably triggered in the event of a single contact failure.

[0054] The movable equipment fixing device for nuclear power plants provided in this embodiment has an overall L-shaped structure and is composed of a main body 1, an upper movable unit 2, a lower fixing unit 3, a PT trolley fixing unit 4, and a base fixing unit 5. The main body 1 is equipped with a touch screen 101, a control unit, buttons 102, a knob 103, a power switch 104, a power port 105, a lithium battery pack 106, an electromagnetic adsorption controller 107, an adjustment rail 108, and corresponding steel support structures 109. The upper movable unit 2 uses a laser sensor 203 to determine the height of the transfer trolley. The upper movable unit 2 automatically moves to the corresponding height, allowing the latch and positioning pins on the movable equipment to engage with the upper positioning pin holes 202 and upper positioning sockets 201 on the upper movable unit 2. Both the upper positioning pin holes 202 and upper positioning sockets 201 are equipped with travel limit micro switches 205 to detect the trolley's arrival signal. The upper movable unit 2 is equipped with an upper electromagnetic attraction assembly 204, which is one of the main structures for electromagnetically attracting and seismically securing the transfer trolley. Ten lower electromagnetic attraction assemblies 301 are installed circumferentially on the lower fixed unit 3, also serving as one of the main structures for electromagnetically attracting and seismically securing the transfer trolley. The incoming PT trolley fixing unit 4 is primarily used to secure the incoming PT trolley through electromagnetic attraction. Ten sets of trolley electromagnetic attraction assemblies 401 are horizontally arranged on the incoming PT trolley fixing unit 4. Twelve bottom-plate electromagnetic attraction assemblies 504 are arranged in an array on the bottom-plate fixed unit 5. When the electrical test trolley is placed within the designated area of the bottom-plate fixed unit 5, the four trolley positioning microswitches 507 on the bottom-plate fixed unit 5 activate, sending a command to the CPU analysis and storage unit. The CPU analyzes the storage unit and identifies the trolley as an electrical test trolley, sending a command to the electromagnetic attraction controller 107. The electromagnetic attraction controller 107 activates the twelve bottom-plate electromagnetic attraction assemblies on the bottom-plate fixed unit 5, applying attraction force to secure the trolley.

[0055] The upper electromagnetic adsorption assembly 204, the lower electromagnetic adsorption assembly 301, the trolley electromagnetic adsorption assembly, the bottom plate electromagnetic adsorption assembly 504, the lithium battery pack 106, the charging and circuit switching module 110, and the electromagnetic adsorption controller 107 collectively constitute the electromagnetic adsorption system of the movable device fixing device. The upper electromagnetic adsorption assembly 204, the lower electromagnetic adsorption assembly 301, the trolley electromagnetic adsorption assembly, and the bottom plate electromagnetic adsorption assembly 504 all utilize the same structure. Specifically, the electromagnetic adsorption assembly consists of two parts: a permanent magnet 3011 (needle magnet), an arc-shaped rubber pad body 30141, and an internal cavity and spring body 30142 within the rubber pad body 30141, which provide for weak magnetic adsorption and fixation. During attraction, the rubber pad body 30141 contacts the steel structure of the cart, compressing the spring body 30142 within the cavity. When released, the spring body 30142 and the cavity return to normal. The other part is a ferromagnetic coil structure, comprising an electromagnet core 3012 and an electromagnetic coil 3013. When DC current is applied to the electromagnetic coil 3013, it generates a strong electromagnetic attraction force. The electromagnetic attraction system can provide power to different electromagnetic attraction components through multiple power sources. If external power is lost, power can be supplied from the internal lithium battery pack 106, ensuring the proper functioning of the movable device's securing mechanism. Multiple upper electromagnetic attraction components 204, lower electromagnetic attraction components 301, cart-side electromagnetic attraction components, and bottom plate electromagnetic attraction components 504 are provided. The upper nepidium magnet of a single electromagnetic attraction component has an attraction range of ≤10 mm and a maximum attraction of 10 N. This weak electromagnetic attraction secures the transfer cart, preventing it from shaking while still allowing it to be pulled out. When energized, the electromagnetic coil 3013 structure of a single electromagnetic attraction assembly generates a maximum attraction force of 100N. Based on control requirements, the number of electromagnetic attraction assemblies in operation can be selected, and the attraction force can be adjusted by controlling the DC current applied to the electromagnetic coil 3013. The electromagnetic attraction force generated by multiple electromagnetic attraction assemblies provides seismic stability and meets certain seismic resistance requirements and vibration resistance specifications, including frequency: 0-200Hz; amplitude: 0-30μm; acceleration: 0.2g.

[0056] The charging and circuit switching module 110 switches the corresponding channel according to the external power supply situation, external AC or DC, to supply power to the device and the lithium battery pack 106; after the two external power sources are lost, the lithium battery pack 106 is automatically started to supply power to the device and the electromagnetic adsorption component; in addition, after detecting that the voltage of the lithium battery pack 106 is low, when there is an external AC power supply, the lithium battery pack 106 is automatically started to charge. In addition, it is controlled by the electromagnetic adsorption controller 107 to open and cut off the power circuits of each electromagnetic adsorption component, and adjust the current size, thereby controlling the number and size of the electromagnetic adsorption force. The lithium battery pack 106 is used to provide power to ensure that the device continues to operate for more than 8 hours when the external power is lost. It can continue to maintain the power supply of the electromagnetic adsorption system and fix various trolleys for earthquake resistance.

[0057] The movable device fixing device can seismically fix three types of trolleys: transfer trolleys, incoming PT trolleys, and electrical test trolleys. The seismic fixation type is automatically selected through the microswitches of the respective fixing units. When seismically fixing the transfer trolley, the upper moving unit 2, the lower fixing unit 3, and the wheel fixing limit mechanism 501 are primarily used. The wheels of the transfer trolley sink into a pair of clamping positioning plates 5019 and are clamped. The bottom of the transfer trolley triggers the four trolley positioning microswitches 507 on the bottom plate fixing unit 5, which also activates the bottom plate electromagnetic adsorption component 504 of the bottom plate fixing unit 5, enhancing the seismic fixation effect. When seismically fixing the incoming PT trolley, the incoming PT trolley primarily relies on the incoming PT trolley fixing unit 4. The bottom of the incoming PT trolley triggers the four trolley positioning microswitches 507, which also activates the bottom plate electromagnetic adsorption component 504 of the bottom plate fixing unit 5, enhancing the seismic fixation effect. When the electric test cart is fixed for earthquake resistance, it can only be fixed by the 12 bottom plate electromagnetic adsorption components 504 of the bottom plate fixing unit 5.

[0058] In addition to the upper mobile unit 2, lower fixed unit 3, incoming PT trolley fixed unit 4, and base plate fixed unit 5, the device body 1 also features a power port 105 for direct connection to a 220VAC or 48VDC power supply system. A lithium battery pack 106 is built into the lower portion of the device body 1, lowering the device's center of gravity and ensuring stability. The device body 1 also features buttons 102 and a knob 103. Buttons 102 include a power switch for activating the device; three control buttons: a "release" button for releasing electromagnetic attraction; an "emergency stop" button for canceling all operations; and an "electromagnetic attraction" button for activating electromagnetic attraction. One knob 103 selects between manual and automatic modes; the other selects between external 220V AC power supply and external 48V DC power supply. Under normal conditions, the external 220V AC power supply is prioritized, followed by the external 48V DC power supply. This external power supply provides power for normal operation of the device and also charges the lithium battery pack 106. When the external power supply is lost, the device automatically switches to the internal lithium battery pack 106 for power supply, and automatically selects external power supply after a call. When you need to choose manual or automatic, just turn the corresponding knob 103 switch to the corresponding position. When automatic electromagnetic adsorption is required, select the knob 103 switch and turn it to the "automatic" operation. At this time, the CPU analyzes the storage unit according to the signals emitted by the micro switches at each position, and makes a logical analysis and judgment on its own; after judgment, it sends an execution instruction to the electromagnetic adsorption controller 107, and according to the type of trolley, turns on the corresponding electromagnetic adsorption component to fix the trolley for anti-vibration; when the knob 103 switch is turned to "manual" adsorption, you need to wait until the trolley is in place, and press and hold the "electromagnetic adsorption" button for 5 seconds. The CPU analyzes the storage unit according to the signals emitted by the micro switches at each position, and makes a logical analysis and judgment on its own; after judgment, it sends an execution instruction to the electromagnetic adsorption controller 107, and according to the type of trolley, turns on the corresponding electromagnetic adsorption component to fix the trolley for anti-vibration. In the event of an abnormality, the "Emergency Stop" button can be pressed, causing the entire device to stop operating. Resetting the device is required before operation can resume, and all operations are restored to their initial safe state. The "Release Adsorption" button can be used with both internal and external power supplies. After pressing and holding the button for 5 seconds, the CPU analyzes the storage unit and sends a command to the electromagnetic adsorption controller 107, controlling the deactivation of all electromagnetic adsorption components. These operations can also be performed on the touch screen 101.

[0059] The mobile device fixture has a built-in control unit and communication unit to control the overall operation of the mobile device fixture. The control unit includes a CPU analysis and storage function unit, which is used to analyze, process and perform logical judgment on the signals sent by multiple micro switches and laser sensors 203. The signals are then fed back to the functional parts of each unit through hard wiring, thereby achieving the function of fixing and releasing the trolley. The communication unit can use 5G network or Wi-Fi to communicate with external auxiliary terminals, back-end systems, or intelligent control cabinets based on external handheld terminals. The interlock diagram or interlock requirements are used to ensure that the transfer trolley is not mistakenly used for other work.

[0060] The upper movable unit 2 is slidably mounted within the device body 1, and the transmission module controls the height position of the upper movable unit 2 relative to the device body 1. When the CPU analyzes the signal received from the laser sensor 203 in the storage unit, it sends a command, automatically moving the upper movable unit 2 up and down under the control of the transmission module. Positioning is performed using the laser sensor 203 on the upper movable unit 2 and the height of the steel plate on the side of the trolley. Once the side of the trolley and the upper movable unit 2 are aligned at the same height, the laser sensor 203 issues a command confirming successful positioning. The trolley can then be moved further, and the latch and positioning pins on the side of the transfer trolley are inserted into the corresponding upper positioning pin holes 202 and upper positioning sockets 201 on the upper movable unit 2. Adjustment guide rails 108 are provided on the device body 1 to ensure that the upper movable unit 2 can move up and down within a fixed range. An aviation plug 208 is also provided on the upper movable unit 2, which docks with the device body 1 to establish a signal connection between the device body 1 and the upper movable unit 2. The aviation plug 208 is connected to the upper movable unit 2 via a connecting cord.

[0061] After the trolley moves to the corresponding position, it touches the micro switch. The micro switch sends the signal that the trolley is in place to the CPU analysis storage unit. After analysis and processing, the CPU analysis storage unit sends a corresponding instruction to the electromagnetic adsorption controller 107. The controller starts the electromagnetic system and turns on the electromagnetic adsorption component of the corresponding unit; when the CPU analysis storage unit transmits the release adsorption instruction to the electromagnetic adsorption controller 107, the controller turns off the electromagnetic system, disconnects the power supply of all electromagnetic adsorption components, releases the anti-seismic fixation, and ensures that the trolley can be pulled out normally.

[0062] The upper positioning pin hole 202 and the upper positioning socket 201 on the upper moving unit 2 are both equipped with a stroke limit micro switch 205. When the two positioning pins of the transfer trolley are inserted into the upper positioning pin hole 202, the stroke limit micro switch 205 is triggered after the stroke is in place, and the stroke limit micro switch 205 sends a corresponding signal to the CPU analysis and storage unit. The upper positioning socket 201 is used to manually fix the transfer trolley, and the upper positioning socket 201 also has a stroke limit micro switch 205 built in. When the handle of the transfer trolley is operated to insert the pin on the trolley into the upper positioning socket 201, the handle is released, the pin returns to its position, and the protruding part touches the stroke limit micro switch 205 inside the upper positioning socket 201, and the stroke limit micro switch 205 sends a corresponding signal to the CPU analysis and storage unit. The two upper positioning pin holes 202 and the three travel limit micro switches 205 in the upper positioning socket 201 are actuated, and a signal is sent to the CPU analysis storage unit, which performs a logical analysis to determine that the upper part of the trolley has moved into position.

[0063] The upper mobile unit 2 is equipped with an electric drive, a built-in motor, a transmission mechanism, and a controller. When the CPU analyzes the upward or downward movement command from the storage unit, the motor rotates through the transmission mechanism to control the upward and downward movement of the upper mobile unit 2. A laser sensor 203 on the upper mobile unit 2 determines the side position of the trolley. When the trolley's side is aligned with the laser sensor 203, the trolley stops moving up and down, achieving the desired positioning of the upper mobile unit 2. At this point, the trolley is positioned and secured using two positioning pins and a latch on the trolley. The upper mobile unit 2 also includes a driving wheel 206 and a DC motor 207 that drives the driving wheel 206. When the built-in controller receives an upward or downward movement signal, the DC motor 207 is powered to rotate forward or reverse, adjusting the upper mobile unit 2's movement upward or downward along the grooved guide rail. All movement is transmitted by gears, with the driving shaft's pinion driving the driven shaft's gear. This ensures both stopping and positioning at any position and reducing speed. The upper moving unit 2 has two upper electromagnetic adsorption components 204 for adsorbing and fixing the sides of the transfer trolley.

[0064] Ten lower electromagnetic adsorption components 301 are arranged around the upper edge of the lower fixed unit 3 to fix the lower side of the transfer trolley for earthquake resistance. It is one of the main structures for achieving earthquake-resistant fixation by electromagnetic adsorption of the transfer trolley. The incoming PT trolley fixing unit 4 is similar in structure to the upper movable unit 2 but cannot be moved. In addition, the trolley positioning pin hole 403 on the incoming PT trolley fixing unit 4 and the trolley positioning socket 402 have separate actions. When the PT trolley pin is inserted into the trolley positioning pin hole 403, the micro switch in the trolley positioning pin hole 403 is actuated, and a signal is sent to the CPU analysis storage unit. At this time, the incoming PT trolley is already fixed in place, and the weak electromagnetic adsorption effect can fix the incoming PT trolley. When the micro switch in the trolley positioning pin hole 403 is damaged, the trolley limit micro switches 404 in the two trolley positioning sockets 402 are used. When seismic fixation is required, the "Electromagnetic Adsorption" button is pressed. The CPU analyzes and processes the data in the storage unit, then issues a command. The electromagnetic adsorption system activates the electromagnetic adsorption assembly 401 on the incoming PT trolley fixing unit 4 and the bottom plate electromagnetic adsorption assembly 504 on the bottom plate fixing unit 5, securing the incoming PT trolley against seismic forces. At this point, the electromagnetic adsorption assemblies on the upper moving unit 2 and the lower fixing unit 3 are not activated.

[0065] The baseplate fixing unit 5 has a certain height and is equipped with two driving guide rails 502 and four built-in wheel retaining and limiting mechanisms 501. To better secure the trolley, the baseplate fixing unit 5 adopts a layered structure, with the bottom layer being a solid steel plate. This lowers the center of gravity and prevents the trolley from being displaced by impact. After the lower fixing unit 3 and the upper movable unit 2 are positioned, the CPU analyzes the storage unit and controls the retraction of the two limit blocks 503 on the baseplate fixing unit 5. The limit blocks 503 are straight near the outside and inclined near the wheel retaining and limiting mechanisms 501. When the trolley is pulled out, the wheels press against the inclined surface, compressing the block springs under the weight of the trolley, causing the limit blocks 503 to automatically retract. When the weight of the trolley is removed, the springs return to their original position, and the limit blocks 503 are ejected. A travel switch 506 is also installed below the limit blocks 503 to monitor their status in real time. After passing the limit block 503, the four wheels of the handcart can continue to advance to the wheel fixing and limiting mechanism 501. The limit plate 505 at the rear of the wheel fixing and limiting mechanism 501 limits the movement of the handcart's wheels. When the handcart is pushed to the limit plate 505 behind the wheel fixing and limiting mechanism 501, the positioning pins and latch pins on the handcart are accurately inserted into the upper positioning pin holes 202 and upper positioning sockets 201 of the handcart's upper moving unit 2. Of course, when the transfer handcart moves on the inclined pedal 5011 and the guide rail, it needs to cooperate with the clamping positioning plate 5019.

[0066] The wheel locking mechanism 501 includes a tilt pedal 5011, a tilt plate interlocking rod 5012, a compression piston 5013, a transmission gear 5014, a gear shifting rod 5015, a hydraulic rod transmission wire 5016, a mechanical bidirectional hydraulic rod 5017 as a driving element, a return spring 5018, and a pair of clamping and positioning plates 5019. The tilt plate interlocking rod 5012 transmits the force generated by the movement of the tilt pedal 5011 to compress the compression piston 5013. The compression piston 5013 contains compressed air and moves backward when subjected to external forces. When the external force is removed, the piston returns to its original position under the action of the compressed air. The transmission gear 5014 is connected to the gear shifting rod 5015. When the compressed air pushes the transmission gear 5014, it rotates and the transmission gear 5014 interlocking rod 5015 moves laterally. As the transmission gear 5014 rotates, the gear shifting rod is simultaneously driven, driving the hydraulic rod transmission wire 5016 to extend and release. The hydraulic rod transmission wire 5016 is used to drive the displacement of the two-way hydraulic rod by extending and retracting the gear-shifting pull rod 5015. The mechanical two-way hydraulic rod 5017 is normally in the center position and will move when external force is applied. A return spring 5018 is installed between the clamping plate 5019 and the base plate. The hydraulic rod transmission wire pulls the mechanical two-way hydraulic rod 5017 to open the pair of clamping plates 5019. The return spring 5018 then forces the clamping plates 5019 to return to their original position. The return spring 5018, through its own elastic deformation, forces the mechanical two-way hydraulic rod 5017 to return to its original position, ensuring the clamping plates can be opened and closed. The two clamping plates are each secured to their respective mechanical two-way hydraulic rods 5017, and opening and closing are achieved through the movement of the hydraulic rods. A pressure sensor 50110 is installed on the facing surface of the clamping plates 5019. This sensor detects wheel pressure and transmits information about the handwheel's position to the CPU for analysis and storage.

[0067] When the wheel locking mechanism 501 is activated, the transfer cart is pushed onto the travel guide rail 502. The two front wheels of the cart first contact the inclined pedal 5011. The inclined pedal 5011 drives the hydraulic lever to rotate the steel wire, which drives open a pair of clamping plates 5019. At this time, the two front wheels of the cart are pushed past the two front wheel locking mechanisms 501 on the base plate. After the clamping plates 5019 open, there is a certain delay of about 10 seconds before they automatically close. The cart is pushed further in, and the two rear wheels pass the inclined pedal 5011 and enter the travel guide rail 502. The two front wheels of the cart reach the limit switch 506 and the limit block 503, and the cart cannot move forward. The limit switch 506 sends a signal to the CPU to analyze and store the signal. After that, the upper movable unit 2 begins to position. After the positioning is completed, step on the inclined pedal 5011 with your foot, a pair of clamping positioning plates 5019 open, and continue to push the transfer cart in. The four wheels of the cart all enter the corresponding wheel fixing limit mechanism 501. As the clamping positioning plate 5019 recovers, the four wheels are clamped and fixed by the clamping positioning plate 5019. At the same time, the positioning pins and the bayonet pins on the transfer cart are also accurately inserted into the upper positioning pin holes 202 and the upper positioning sockets 201 of the upper movable unit 2.

[0068] For ease of control, a touchscreen display 101 is also provided on the device body 1. The touchscreen display 101 integrates a camera 111, which allows for remote control of on-site conditions and identification of the user. The touchscreen display 101 displays status information, automatic and manual operation options (for example, if the internal travel limit microswitch 205 of the upper movable unit 2 is damaged and unable to transmit a signal, the electromagnetic system can be activated or released on the touchscreen), device self-test, and displays the status of various parts of the trolley.

[0069] During operation at a nuclear power plant, the movable device securing device uses a normal circuit breaker transfer cart (non-incoming PT cart) as an example. After use, the cart needs to be secured for anti-vibration. The cart is pushed onto the device's inclined pedal 5011. This pedal is pressed down, releasing the clamping plates 5019. The cart's two front wheels are then pushed past the two clamping plates 5019. When the cart reaches the two travel switches 506 and stops on the track, indicating that the wheels are in position and cannot be moved forward, the travel switches 506 send a signal to the CPU's analysis and storage unit. This unit then issues a command to the device's upper movable unit 2. The upper movable unit 2, guided by the laser sensor 203, moves up and down to ensure alignment with the positioning pins on the cart's side. This indicates positioning is complete. The laser sensor 203 sends a signal to the CPU's analysis and storage unit, which controls the retraction of the two stops.

[0070] Step on the inclined pedal 5011 with your foot, the clamping positioning plate 5019 opens, and continue to push the transfer cart in. The four wheels of the cart roll down to the baffle limit of the wheel fixing limit mechanism 501, then release the inclined pedal 5011, and the clamping positioning plate 5019 slowly returns to the clamping state. The four wheels are clamped and fixed by the clamping positioning plate 5019. At the same time, the positioning pins and bayonet pins on the cart are also accurately inserted into the positioning pin sockets and bayonet pin sockets of the upper moving unit 2.

[0071] After the trolley's latch and locating pins are inserted into place, the three travel limit microswitches 205 in the two upper locating pin holes 202 of the upper movable unit 2 and the upper locating socket 201 are activated, sending a signal to the CPU analysis storage unit. The CPU analyzes the storage unit and logically determines that the upper part of the trolley has been moved and fixed in place. The next step is to activate the electromagnetic adsorption system. At this time, since the trolley has been pushed into the adsorption and fixed position of the device, the rubidium magnets of the electromagnetic adsorption components in the upper movable unit 2, lower fixed unit 3, and bottom plate fixed unit 5 of the device have a certain electromagnetic adsorption capacity, which plays the role of fixing the trolley. At this time, a person can pull out the trolley with force.

[0072] Subsequently, the automatic electromagnetic adsorption is started, and the CPU analyzes the storage unit and transmits the relevant signal to the electromagnetic adsorption controller 107. The electromagnetic adsorption controller 107 controls the charging and circuit switching module 110, starts the opening and adjustment of the circuit of the electromagnetic adsorption component, and starts all the built-in electromagnetic adsorption components of the upper moving unit 2, the lower fixed unit 3, and the bottom plate fixed unit 5 of the device, that is, passes direct current to the ferromagnetic coil of the electromagnetic adsorption component to generate electromagnetic adsorption force.

[0073] In addition, the four trolley wheels are fixed by the clamping positioning plate 5019 of the wheel fixing and limiting mechanism 501, which plays a role in anti-seismic fixing.

[0074] The transfer cart is secured against shock by an electromagnetic adsorption system and a wheel-fixing limiter 501. The entire process can be monitored on a display. After 30 seconds of no change in position, the screen automatically turns off. If the steps are not completed, a message indicating a fault and requiring a reset will be displayed on the display.

[0075] When retrieving the transfer trolley, you only need to shake the operating handle on the trolley left and right to unlock the transfer trolley's pin from the pin socket. The micro switch inside the pin socket is released and the signal is transmitted to the CPU analysis storage unit.

[0076] The CPU analyzes the signal received by the storage unit to release the transfer cart and sends a signal to the electromagnetic adsorption controller 107. The electromagnetic adsorption controller 107 controls the charging and circuit switching module 110 to cut off the power supply of all electromagnetic adsorption components. The loss of power to the electromagnetic adsorption components causes the ferromagnetic coil to stop working and lose its magnetic force.

[0077] By stepping on the inclined pedal 5011, the four pairs of clamping and positioning plates 5019 open (they automatically close after a delay), and then forcefully pulling the trolley outward, the wheels move outward from the driving guide rails 502 and away from the device. Because the limit block 503 is designed to be straight near the outside and inclined near the wheel fixing limit mechanism 501, when the trolley is pulled out, the two front wheels press the limit block 503 along the inclined surface. The weight of the trolley compresses the block spring, allowing the block to retract. When the weight is removed, the spring recovers and the limit block 503 pops out.

[0078] When the front two wheels of the transfer trolley are separated from the driving guide rail 502, the transfer trolley is retrieved and the device returns to its initial state.

[0079] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention. Such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A device for fixing a movable device, characterized in that: include: The device body (1) is provided with an upper movable unit (2), the upper movable unit (2) is provided with an upper positioning socket (201), and the movable device is provided with a positioning pin, the positioning pin being adapted to be plugged and positioned with the upper positioning socket (201); A lower fixing unit (3) is fixedly mounted on the device body (1); a lower electromagnetic adsorption component (301) is mounted on the lower fixing unit (3); and the movable device is suitable for being adsorbed and fixed to the electromagnetic adsorption component; A bottom plate fixing unit (5) is fixedly mounted on the bottom of the device body (1); a wheel fixing and limiting mechanism (501) is provided in the bottom plate fixing unit (5); and the wheels of the movable device are adapted to cooperate with the wheel fixing and limiting mechanism (501) for limiting.

2. The device for fixing a movable device according to claim 1, wherein: The lower electromagnetic adsorption component (301) comprises: A permanent magnet (3011) has an electromagnetic core (3012) fixedly connected to one side thereof, and an electromagnetic coil (3013) is wound around the electromagnetic core (3012); A decompression elastic member (3014) is fixedly mounted on a side of the permanent magnet (3011) facing away from the electromagnet core (3012), and the movable device is adapted to abut and cooperate with the decompression elastic member (3014).

3. The device for fixing a movable device according to claim 2, wherein: The decompression elastic member (3014) comprises a rubber pad body (30141) and a spring body (30142); a mounting cavity is provided in the rubber pad body (30141), and the spring body (30142) is embedded and mounted in the mounting cavity.

4. The device for fixing a movable device according to any one of claims 1 to 3, characterized in that: A driving guide rail (502) is also provided on the bottom plate fixing unit (5), and the driving guide rail (502) is used to guide the wheels of the movable device into a fixed position.

5. The device for fixing a movable device according to any one of claims 1 to 3, characterized in that: A travel limit micro switch (205) is installed in the positioning socket.

6. The device for fixing a movable device according to any one of claims 1 to 3, characterized in that: A pair of clamping positioning plates (5019) are provided in the wheel fixing and limiting mechanism (501), and pressure sensors (50110) are installed on the facing surfaces of the pair of clamping positioning plates (5019). The clamping positioning plates (5019) are fixedly installed on the driving end of the driving member, and the driving member is suitable for driving the pair of clamping positioning plates (5019) to move toward or away from each other.

7. The device for fixing a movable device according to claim 6, wherein: The driving member is a mechanical bidirectional hydraulic rod (5017), one end of which is fixedly mounted on the base plate fixing unit (5), and the other end of which is fixedly connected to the clamping positioning plate (5019).

8. The device for fixing a movable device according to any one of claims 1 to 3, characterized in that: An incoming PT trolley fixing unit (4) is also installed between the bottom plate fixing unit (5) and the lower fixing unit (3). A trolley electromagnetic adsorption component (401) is installed on the incoming PT trolley fixing unit (4). The trolley electromagnetic adsorption component (401) is suitable for cooperating with the trolley for adsorption connection.

9. The device for fixing a movable device according to claim 8, wherein: The incoming PT trolley fixing unit (4) is also provided with a trolley positioning socket (402), and the trolley body is matched with a trolley positioning pin, which is suitable for being plugged and positioned with the trolley positioning socket (402).

10. The device for fixing a movable device according to claim 9, wherein: A trolley limit micro switch (404) is installed in the trolley positioning socket (402).

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