Interlocking mechanism and practical operation simulation body training device for foreign matter prevention pool of nuclear power plant

Abstract

The utility model relates to mechanical safety interlock technical field, especially a kind of interlocking mechanism and nuclear power station is used to prevent foreign matter pool practical operation simulation body training device, including simulation pool, including the sliding groove being opened in the both sides surface of simulation pool, and the locking groove being evenly spaced on the side wall of sliding groove;And, setting on the mobile car of simulation swimming pool, including the support rod being set in the mobile car bottom, the limiting wheel being set in the support rod bottom, and the locking assembly being set on the limiting wheel and corresponding with the locking groove;The mobile car bottom is provided with electric lock assembly.Under the joint action of locking assembly and electric lock assembly, when mobile car is inclined, triangular insulating block is inclined with it to make electric contact and electric contact strip contact, brake shoe rubs with sliding groove and realizes progressive damping under the action of its upper tension spring at this time, while electromagnetic spring together slows down mobile car, realizes slow and stop, and stability and reliability are considered.

Description

Technical Field

[0001] This utility model relates to the field of mechanical safety interlocking technology, and in particular to an interlocking mechanism and a training device for a simulated operation of a foreign object prevention pool for nuclear power plants. Background Technology

[0002] Currently, most foreign object (FOO) prevention training at nuclear power plants is theoretical, conducted through classroom text teaching, and lacks real-world equipment operation experience. Its scope mainly includes pre-entry training for staff, operation and maintenance skills training, and experience feedback learning. Since the practical operation of FEO prevention in nuclear power plants is greater than the theoretical one, conducting training on-site not only poses certain risks to personnel but also interferes with the safety of the equipment and the conduct of other work, while also introducing the risk of new FEOs.

[0003] In the training scenario of the foreign object prevention pool in a nuclear power plant, the staff need to stand on the mobile device (such as the mobile vehicle above the simulated pool) and move with it. When the force on the mobile device is uneven, it is easy to tilt. When the direction of movement is fixed, the mobile device is prone to tipping over. Therefore, the locking mechanism of the mobile device is the core component to ensure operational safety and scenario simulation. Its performance directly determines the training effect and personnel safety. However, existing locking mechanisms generally adopt a design logic of "sudden and violent mechanical stop," such as limiting displacement through hard collision between a rigid stop block and the moving wheel, or using an electromagnetic push rod to directly drive the locking pin to "instantly insert" into the locking hole. The entire braking process has no buffering mechanism. This kind of sudden stop has particularly prominent drawbacks in nuclear power plant training scenarios: when trainees stand on the moving vehicle, they are prone to losing their balance due to sudden inertial impact, and may even fall or collide with the simulated equipment, which contradicts the core objective of "ensuring personnel safety" during training. Moreover, rigid impact will cause the moving vehicle chassis, locking pin and other components to be subjected to high-frequency stress concentration for a long time, resulting in component deformation, accelerated wear, high maintenance costs and affecting the continuity of training. This design defect makes it impossible for existing locking mechanisms to balance safety and practicality.

[0004] Therefore, this utility model proposes an interlocking mechanism and a training device for a simulated operation of a foreign object prevention pool for nuclear power plants. Utility Model Content

[0005] In view of the technical problem of teaching accidents caused by the lack of buffering in the existing interlocking mechanism, the first technical solution of this utility model is proposed.

[0006] This utility model provides an interlocking mechanism, the purpose of which is to solve the technical problem of teaching accidents caused by the mechanical force of existing locking mechanisms.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an interlocking mechanism, comprising a simulated water tank, including sliding grooves formed on both sides of the simulated water tank, and locking grooves evenly spaced on the sidewalls of the sliding grooves; and,

[0008] The mobile vehicle set on the simulated water tank includes a support rod set on the bottom of the mobile vehicle, a limiting wheel set on the bottom of the support rod, and a locking component set on the limiting wheel corresponding to the locking groove.

[0009] The mobile vehicle is equipped with an electric lock assembly at its bottom.

[0010] As a preferred embodiment of the interlocking mechanism of this utility model, the locking assembly includes a positioning block disposed inside the support rod, an electromagnetic rod disposed on the positioning block, an electromagnetic spring disposed outside the electromagnetic rod, and a locking block disposed at the end of the electromagnetic spring away from the positioning block.

[0011] In a preferred embodiment of the interlocking mechanism of this utility model, the normal relaxation length of the electromagnetic spring is greater than the length of the electromagnetic rod.

[0012] As a preferred embodiment of the interlocking mechanism of this utility model, a brake pad is provided on the limiting wheel.

[0013] As a preferred embodiment of the interlocking mechanism of this utility model, the electric lock assembly includes a mounting block disposed at the bottom of the mobile vehicle, a triangular insulating block disposed at the bottom of the mounting block, and an electrical contact disposed on the side of the triangular insulating block near the support rod.

[0014] As a preferred embodiment of the interlocking mechanism of this utility model, the support rod is provided with an electrical contact strip corresponding to the electrical contact.

[0015] As a preferred embodiment of the interlocking mechanism of this utility model, the cross-section of the triangular insulating block is an isosceles triangle, and a torsion spring is provided at the midpoint of both sides of the triangular insulating block, and the other end of the torsion spring is fixedly connected to the mounting block.

[0016] The beneficial effects of the interlocking mechanism of this utility model are as follows: Under the combined action of the locking component and the electric lock component, when the moving vehicle tilts, the triangular insulating block tilts accordingly, causing the electric contact to contact the electric contact strip. At this time, the brake pad rubs against the sliding groove under the action of the upper tension spring to achieve progressive damping. At the same time, the electromagnetic spring is energized to drive the locking block to pop out. When the moving vehicle continues to slide under inertia, the electromagnetic spring can be stretched laterally, that is, it moves with the moving vehicle in the forward direction and generates resistance in the opposite direction, together reducing the speed of the moving vehicle, achieving deceleration and slow stopping, taking into account both stability and reliability.

[0017] Another objective of this invention is to provide a training device for a nuclear power plant's anti-foreign-object water pool, which aims to solve the technical problem of unauthorized personnel accidentally entering the training device, causing personnel safety risks and disrupting the training order.

[0018] To solve the above-mentioned technical problems, this utility model also provides the following technical solution: a training device for a nuclear power plant's anti-foreign-object pool operation simulation body, which includes an interlocking mechanism; and a protective fence installed on the mobile vehicle, and protective chains installed at both ends of the protective fence.

[0019] As a preferred embodiment of the training device for the nuclear power plant anti-foreign-object water pool, the bottom surface of the mobile vehicle is provided with an anti-slip grating.

[0020] As a preferred embodiment of the training device for the nuclear power plant anti-foreign-object water pool, the bottom of the mobile vehicle is provided with reinforcing ribs.

[0021] The beneficial effects of this nuclear power plant anti-foreign-object pool practical simulation training device are as follows: the protective fence surrounding the mobile vehicle forms a physical barrier, which can prevent unauthorized personnel from directly contacting the mobile vehicle's operating area; the protective chain further blocks the entry and exit channels at both ends of the protective fence, and only authorized trainees can unlock the chain to enter after the instructor's permission, effectively preventing unauthorized personnel from accidentally entering, ensuring the safe and orderly training process, and eliminating training interruptions or safety accidents caused by personnel accidentally entering. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0023] Figure 1 This is a schematic diagram of the overall structure of the interlocking mechanism and the training device for the anti-foreign-object water pool in nuclear power plants in this utility model.

[0024] Figure 2 This is a schematic diagram of the mobile vehicle in this utility model.

[0025] Figure 3 This is a schematic diagram of the locking component structure of the interlocking mechanism in this utility model.

[0026] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure in its non-working state.

[0027] Figure 5This is a schematic diagram of the electric lock assembly structure of the interlocking mechanism in this utility model.

[0028] Figure 6 for Figure 5 Enlarged diagram of point A in the middle. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0032] Example 1

[0033] Reference Figures 1-4 This is the first embodiment of the present invention, which provides an interlocking mechanism, including a simulated water tank 1, sliding grooves 11 formed on both sides of the simulated water tank 1, and locking grooves 12 evenly spaced on the sidewalls of the sliding grooves 11; and,

[0034] The mobile vehicle 2, which is set on the simulated water pool, includes a support rod 21 set at the bottom of the mobile vehicle 2, a limiting wheel 22 set at the bottom of the support rod 21, and a locking component 3 set on the limiting wheel 22 corresponding to the locking groove 12. During training, the trainee stands on the mobile vehicle 2, and the limiting wheel 22 of the mobile vehicle 2 slides in the sliding groove 11 along the direction of travel, which drives the trainee to move.

[0035] The bottom of the mobile vehicle 2 is equipped with an electric lock assembly 4, and the bottom of the simulated water pool 1 is equipped with a receiving slot, which is equipped with a rechargeable dry battery as a power source. When the mobile vehicle 2 tilts, the electric lock assembly 4 works to make the locking assembly 3 pop out and enter the locking slot 12, so that the mobile vehicle 2 decelerates and stops and returns to an upright state, thus avoiding the safety accident caused by the vehicle overturning due to the acceleration after the mobile vehicle 2 tilts.

[0036] Preferably, the locking assembly 3 includes a positioning block 31 disposed inside the support rod 21, a magnetic electromagnetic rod 32 disposed on the positioning block 31, and an electromagnetic spring 33 disposed outside the electromagnetic rod 32. The electromagnetic rod is made of low carbon steel, the electromagnetic spring is made of 304 stainless steel, and a locking block 34 disposed at the end of the electromagnetic spring 33 away from the positioning block 31, which can be attracted by the electromagnetic rod 32. When the mobile vehicle 2 is driving normally, the electromagnetic spring 33 remains in a contracted state. At this time, the positioning block 31 is located inside the support rod 21 and does not affect the normal driving of the mobile vehicle 2. When the mobile vehicle 2 tilts, the electric lock assembly 4 is energized so that the electromagnetic rod 32 no longer attracts the locking block 34. At this time, the electromagnetic spring 33 loses the pressure of the locking block 34, thereby causing the locking block 34 to pop out. When the locking block 34 moves to the locking groove 12, the locking block 34 enters the locking groove 12, causing the vehicle to decelerate until it stops.

[0037] Furthermore, the normal relaxation length of the electromagnetic spring 33 is greater than the length of the electromagnetic rod 32. When the locking block 34 enters the locking groove 12 but the moving vehicle 2 moves too fast, the relaxation margin of the electromagnetic spring 33 causes it to continue moving along the original direction of motion with the moving vehicle 2. Its maximum relaxation margin is the width of the moving vehicle 2. When the rear support rod 21 moves to the positioning position of the front locking block 34, the electromagnetic spring 33 reaches its maximum relaxation length. At this time, the electromagnetic spring 33 contracts, thereby providing a reverse pulling force to the moving vehicle 2, causing it to retract to the positioning groove where the locking block 34 is positioned.

[0038] During use: The trainee stands on the platform of the mobile vehicle 2 and drives the mobile vehicle 2 to move along the sliding grooves 11 on both sides of the simulated water pool 1 by operating the control lever. At this time, the electric lock assembly 4 is de-energized. The magnetic force of the electromagnetic rod 32 itself attracts the locking block 34, so that the locking block 34 keeps the electromagnetic spring 33 compressed, and keeps the electromagnetic spring 33 contracted (the amount of compression is equal to the difference between the normal relaxed length of the electromagnetic spring 33 and the length of the electromagnetic rod 32). The locking block 34 is completely housed inside the support rod 21, without affecting the smooth sliding of the limit wheel 22 along the sliding groove 11. When the mobile vehicle 2 tilts or moves too fast due to the trainee's center of gravity shifting or uneven road surface, the electric lock assembly 4 is energized, so that the electromagnetic rod 32 loses its attraction to the locking block 34, and the electromagnetic spring 33 releases its preload force to push the locking block 34 out of the support rod 21 and move towards the locking groove 12 on the side wall of the sliding groove 11.

[0039] If the mobile vehicle 2 is still in motion when tilted, when the first locking block 34 is embedded in the locking groove 12, the slack of the electromagnetic spring 33 allows the mobile vehicle 2 to continue moving in the original direction. Its maximum movement distance does not exceed the width of the mobile vehicle 2. The spring deformation buffers part of the kinetic energy, achieving initial deceleration. When the subsequent support rod 21 moves to the positioning position of the preceding locking block 34, the electromagnetic spring 33 reaches its maximum extension length and begins to contract, generating a reverse pull force that forces the mobile vehicle 2 to retreat until it retreats to the positioning groove where the locking block 34 is positioned. The mobile vehicle 2 then stops completely and returns to an upright state. When the mobile vehicle 2 returns to a horizontal state, the electric lock assembly 4 is de-energized, causing the electromagnetic rod 32 to re-attract the locking block 34 and compress the electromagnetic spring 33. The locking block 34 disengages from the locking groove 12 and retracts into the support rod 21. The mobile vehicle 2 resumes normal driving function and can continue to conduct anti-foreign object practical training.

[0040] Example 2

[0041] Reference Figures 1-6 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that a brake pad 23 is provided on the limiting wheel 22. The surface of the iron brake pad 23 is covered with a rubber shell. When the electric lock assembly 4 is turned on, the brake pad 23 unfolds before the locking block 34 under the action of its upper tension spring. Its rubber surface continuously contacts the inner wall of the sliding groove 11, generating frictional force in the opposite direction of the movement of the moving vehicle 2 and frictional force in the vertical direction, preventing the moving vehicle 2 from tipping over. At the same time, it reduces the initial speed of the moving vehicle 2. When the electromagnetic spring 33 reaches its maximum relaxation length and begins to contract, the brake pad 23 still remains in the contact state. Through the bidirectional action of the spring tension and frictional force, the moving vehicle 2 smoothly returns to the locked position, avoiding secondary impact during the return process.

[0042] Preferably, the electric lock assembly 4 includes a mounting block 41 disposed at the bottom of the mobile vehicle 2, a triangular insulating block 42 disposed at the bottom of the mounting block 41, and an electrical contact 43 disposed on the side of the triangular insulating block 42 near the support rod 21. The triangular insulating block 42 contains a wire connecting the power supply and the electrical contact 43.

[0043] Furthermore, the support rod 21 is provided with an electrical contact strip 44 corresponding to the electrical contact 43. The electrical contact 43 is made of silver tin oxide, and the electrical contact strip 44 is made of manganese copper alloy. When the moving vehicle 2 tilts, the triangular insulating block 42 tilts accordingly, so that the electrical contact 43 contacts the electrical contact strip 44. At this time, the electric lock assembly 4 is energized, realizing the deceleration and slow stop of the entire device.

[0044] Furthermore, the triangular insulating block 42 has an isosceles triangle cross-section. A torsion spring 45 is installed at the midpoint of each side of the triangular insulating block 42, and the other end of the torsion spring 45 is fixedly connected to the mounting block 41. When the moving vehicle 2 tilts or moves too fast, the triangular insulating block 42 tilts accordingly under the force of tilting or the inertia caused by excessive speed. At this time, the torsion spring 45 on the side away from the support rod 21 is stretched. When the electrical contact 43 contacts the electrical contact strip 44, the electric lock assembly 4 is energized, moving away from the support rod. The torsion spring 45 on one side of support rod 21 remains in a stretched state, while the torsion spring 45 on the side closer to support rod 21 remains in a compressed state. The electric lock assembly 4 also remains energized. When the moving vehicle 2 slows down and stops, the triangular insulating block 42 tends to straighten. The compressive force of the torsion spring 45 on the side closer to support rod 21 resists the tensile force of the torsion spring 45 on the side farther from support rod 21, causing the triangular insulating block 42 to return to its upright position. The electrical contact 43 separates from the electrical contact strip 44, the electric lock assembly 4 is de-energized, and the device returns to its original working state.

[0045] During use: When trainees stand on the platform of the mobile cart 2 for practical training, the mobile cart 2 travels normally along the sliding groove 11. At this time, the triangular insulating block 42 remains upright under the balancing action of the torsion springs 45 on both sides. The electrical contact 43 and the electrical contact strip 44 are separated. The electric lock assembly 4 is not energized. The brake pad 23 does not contact the inner wall of the sliding groove 11. The locking block 34 keeps the electromagnetic spring 33 contracted under the attraction of the electromagnetic rod 32, which does not affect the movement of the mobile cart 2.

[0046] When the moving vehicle 2 tilts due to a shift in its center of gravity, the triangular insulating block 42 tilts synchronously with the moving vehicle 2. The torsion spring 45 on the side away from the support rod 21 is stretched, while the torsion spring 45 on the side closer to the support rod 21 is compressed. When the tilt angle reaches the trigger threshold, the electrical contact 43 on the triangular insulating block 42 contacts the electrical contact strip 44 of the support rod 21, the electric lock assembly 4 is activated, the brake pad 23 unfolds before the locking block 34, and the rubber outer shell outside the iron core fits tightly against the inner wall of the sliding groove 11. Through continuous friction, the moving vehicle 2 achieves a high initial speed. As the speed decreases, the electromagnetic rod 32 is de-energized, releasing the electromagnetic spring 33 and pushing the locking block 34 into the locking groove 12. If the moving vehicle 2 still has inertia and moves forward, the slack of the electromagnetic spring 33 allows it to continue moving, with a maximum distance not exceeding the width of the vehicle. During this period, the brake pads 23 continuously decelerate due to friction. When the electromagnetic spring 33 reaches its maximum slack length and begins to contract, the brake pads 23 remain in contact. Under the bidirectional action of the spring's reverse tension and friction, the moving vehicle 2 smoothly returns to the locking position and gradually stops, achieving a buffered return.

[0047] After the mobile vehicle 2 stops, the torsion spring 45 on the side closer to the support rod 21 releases its compressive force, which balances with the tensile force of the torsion spring 45 on the side farther away. This pushes the triangular insulating block 42 back to upright, causing the electrical contact 43 to separate from the electrical contact strip 44. The electric lock assembly 4 is de-energized, the electromagnetic rod 32 re-attracts the locking block 34 to compress the spring, and the brake pad 23 retracts under the action of the reset spring. The device returns to its original working state, and the trainee can continue to operate the mobile vehicle 2 to complete the training process.

[0048] Example 3

[0049] Reference Figures 1-6 This is the third embodiment of the present invention. This embodiment further provides a training device for a nuclear power plant's anti-foreign-object pool practical simulation body, including the interlocking mechanism in the above embodiment, as well as a protective fence 24 set on the mobile vehicle 2, and protective chains 25 set at both ends of the protective fence 24 to prevent unauthorized personnel from directly contacting the operating area of ​​the mobile vehicle 2; the protective chains 25 further block the access channels at both ends of the protective fence 24, and only authorized trainees can unlock the chain to enter after the instructor's permission, effectively preventing unauthorized personnel from accidentally entering, ensuring the safe and orderly training process, and preventing training interruptions or safety accidents caused by personnel accidentally entering.

[0050] Furthermore, the bottom surface of the mobile vehicle 2 is equipped with an anti-slip grating 26, which increases the friction of the contact surface where people stand. Even if the environment around the simulated pool 1 is wet, it can prevent trainees from slipping and further reduce the safety risks of personnel during the training process.

[0051] Furthermore, the bottom of the mobile vehicle 2 is equipped with reinforcing ribs 27 to enhance the structural strength of the chassis of the mobile vehicle 2, prevent chassis deformation caused by long-term use or personnel standing on it, extend the service life of the device, ensure the stable operation of the training equipment, and indirectly maintain the continuity of training order.

[0052] Example 4

[0053] This embodiment is used to explore the key timing of the device as a whole when the moving vehicle 2 has different tilt angles. Specifically, the moving vehicle 2 maintains an initial speed of 0.6 m / s and moves forward at a constant speed. It is tilted by external force at 3, 4 and 5 degrees respectively. The time required for the electric contact 43 to contact and separate from the electric contact strip 44, for the speed of the moving vehicle 2 to drop to 0.1 m / s, and for the moving vehicle 2 to come to a complete stop is recorded from the time the tilt angle of the moving vehicle 2 reaches the preset angle. The results are shown in Table 1.

[0054] Test conditions:

[0055] Initial velocity of the moving vehicle: 0.6 m / s (a commonly used speed in simulated training scenarios);

[0056] Test environment: temperature 25℃, surface roughness Ra=1.6μm of sliding groove 11 (free from oil and foreign matter);

[0057] Device parameters: Brake pad 3 is a rubber-coated iron structure (Shore hardness 65 degrees, coefficient of friction 0.45), electromagnetic spring 33 has a stiffness coefficient of 15N / mm, and torsion spring 45 has a preload of 5N;

[0058] Load capacity: The mobile vehicle has a load capacity of 150kg (including the weight of one trainee).

[0059] Table 1

[0060]

[0061] As can be seen from Table 1, the larger the tilt angle, the shorter the contact time between the electrical contact 43 and the electrical contact strip 44. This is because a larger tilt angle results in greater kinetic energy and deformation of the torsion spring 45 when the mobile vehicle 2 initially tilts, ensuring that the device can quickly trigger braking protection when the mobile vehicle 2 has an abnormal posture, thus gaining critical time to avoid the risk of overturning. The braking efficiency is positively correlated with the tilt angle, and it maintains stable characteristics throughout the process, without the violent instantaneous stopping problem of traditional mechanical braking, thus ensuring the balance and safety of the trainees.

[0062] Example 5

[0063] This embodiment is used to explore the key timing of the device as a whole when the moving vehicle 2 has different instantaneous accelerations. Specifically, the moving vehicle 2 maintains an initial velocity of 0.6 m / s and moves forward at a constant speed, and is then subjected to external forces to achieve speeds of 1, 1.5, and 2 m / s respectively. 2 The instantaneous acceleration is calculated from the moment the moving vehicle 2 has instantaneous acceleration. The time required for the electrical contact 43 to contact and separate from the electrical contact strip 44, for the moving vehicle 2 to move to the maximum displacement, and for the moving vehicle 2 to come to a complete stop are recorded respectively. The results are shown in Table 2.

[0064] Test conditions:

[0065] Initial velocity of the moving vehicle: 0.6 m / s, tilt trigger threshold: 3° (a commonly used speed in simulated training scenarios);

[0066] Test environment: temperature 25℃, surface roughness Ra=1.6μm of sliding groove 11 (free from oil and foreign matter);

[0067] Device parameters: Brake pad 3 is a rubber-coated iron structure (Shore hardness 65 degrees, coefficient of friction 0.45), electromagnetic spring 33 has a stiffness coefficient of 15N / mm, and torsion spring 45 has a preload of 5N;

[0068] Load capacity: The mobile vehicle has a load capacity of 150kg (including the weight of one trainee);

[0069] Safety redundancy: The length of sliding groove 11 is 3.5m, and the maximum displacement during the experiment is 2m.

[0070] Table 2

[0071]

[0072]

[0073] As can be seen from Table 2, the greater the instantaneous acceleration, the stronger the initial kinetic energy of the moving vehicle 2 when it tilts, and the shorter the time it takes for the moving vehicle 2 to move to the maximum displacement. After the locking block 34 is embedded in the locking groove 12, the moving vehicle 2 will still drive the electromagnetic spring 33 to stretch further, avoiding the displacement control problem of the traditional rigid block, realizing buffer return, and ensuring smooth braking.

[0074] This invention avoids the risk of the mobile vehicle 2 accelerating and overturning after tilting by using a continuous action of "tilt detection - elastic locking - buffer return". It also achieves smooth deceleration and posture correction through the elastic deformation of the electromagnetic spring 33, thus taking into account both training safety and smooth operation.

[0075] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An interlocking mechanism, characterized in that: include, The simulated water tank (1) includes sliding grooves (11) formed on both sides of the simulated water tank (1), and locking grooves (12) evenly spaced on the sidewalls of the sliding grooves (11); and, The mobile vehicle (2) set on the simulated water tank includes a support rod (21) set at the bottom of the mobile vehicle (2), a limiting wheel (22) set at the bottom of the support rod (21), and a locking component (3) set on the limiting wheel (22) corresponding to the locking groove (12). The bottom of the mobile vehicle (2) is equipped with an electric lock assembly (4).

2. The interlocking mechanism as described in claim 1, characterized in that: The locking assembly (3) includes a positioning block (31) disposed inside the support rod (21), an electromagnetic rod (32) disposed on the positioning block (31), an electromagnetic spring (33) disposed outside the electromagnetic rod (32), and a locking block (34) disposed at the end of the electromagnetic spring (33) away from the positioning block (31).

3. The interlocking mechanism as described in claim 2, characterized in that: The normal relaxation length of the electromagnetic spring (33) is greater than the length of the electromagnetic rod (32).

4. The interlocking mechanism as described in claim 3, characterized in that: The limiting wheel (22) is provided with a brake pad (23).

5. The interlocking mechanism as described in claim 4, characterized in that: The electric lock assembly (4) includes a mounting block (41) disposed at the bottom of the mobile vehicle (2), a triangular insulating block (42) disposed at the bottom of the mounting block (41), and an electric contact (43) disposed on the side of the triangular insulating block (42) near the support rod (21).

6. The interlocking mechanism as described in claim 5, characterized in that: The support rod (21) is provided with an electrical contact strip (44) corresponding to the electrical contact (43).

7. The interlocking mechanism as described in claim 6, characterized in that: The cross-section of the triangular insulating block (42) is an isosceles triangle. A torsion spring (45) is provided at the midpoint of both sides of the triangular insulating block (42), and the other end of the torsion spring (45) is fixedly connected to the mounting block (41).

8. A training device for operating a foreign object-proof water pool in a nuclear power plant, characterized in that: Including the interlocking mechanism as described in any one of claims 1 to 7, and, The protective fence (24) installed on the mobile vehicle (2) and the protective chains (25) installed at both ends of the protective fence (24).

9. The nuclear power plant foreign object prevention water pool practical simulation training device as described in claim 8, characterized in that: The bottom surface of the mobile vehicle (2) is provided with an anti-slip grating (26).

10. The nuclear power plant foreign object prevention water pool practical simulation training device as described in claim 9, characterized in that: The bottom of the mobile vehicle (2) is provided with reinforcing ribs (27).

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