Nuclear power drawer cabinet with four-position driving mechanism

Abstract

The nuclear power drawer cabinet provided with the four-position driving mechanism comprises a cabinet body, a drawer unit, the four-position driving mechanism and an elastic adjusting mechanism, a containing groove is formed in the cabinet body, and the drawer unit is movably arranged in the containing groove. The four-position driving mechanism comprises a turbine assembly and a transmission part in transmission connection with the turbine assembly, the transmission part is arranged in the containing groove, the turbine assembly is rotatably arranged in the drawer unit so as to drive the drawer unit to move, and the turbine assembly is suitable for being connected with a hand crank so as to drive the drawer unit to move. The elastic adjusting mechanism comprises an elastic extrusion assembly and a movable assembly, the elastic extrusion assembly is arranged on the movable assembly, and the movable assembly is movably arranged in the drawer unit so that the elastic extrusion assembly can abut against the turbine assembly. A user can adjust the flexibility of the drawer unit according to requirements, so that the use experience of the user is effectively improved.

Description

Technical Field

[0001] This application relates to the field of power switch cabinet technology, and further to a nuclear power plant drawer cabinet equipped with a four-position drive mechanism. Background Technology

[0002] Power switchgear is control equipment used in industries such as manufacturing, service sectors, and infrastructure. It is commonly found in rail transportation, nuclear power plants, high-rise buildings, and intelligent factories, used for control and protection during power transmission, distribution, and energy conversion. Drawer switchgear is the most widely used type, centrally distributing power to downstream loads. The drawer unit is the most important component of the drawer switchgear, responsible for distributing power to each branch circuit and also for measuring electrical parameters and controlling electrical circuits. These functions can now be remotely implemented via automated communication.

[0003] Power switch cabinet drawer units typically have three position states: when the drawer unit is in the separated position, both the primary and secondary circuits are disconnected, and communication is interrupted; when the drawer unit is in the test position, the primary circuit is disconnected, the secondary circuit is connected, and communication is maintained; when the drawer unit is in the working position, both the primary and secondary circuits are connected. Currently, most drawer-type electrical cabinets use a hand crank to move the drawer unit, thereby switching positions (e.g., separated, test, and working). However, the flexibility of existing drawer units during movement is not adjustable, and users cannot adjust the range of movement of the drawer unit as needed.

[0004] Therefore, this utility model aims to provide a nuclear power plant drawer cabinet equipped with a four-position drive mechanism to solve the above-mentioned technical problems. Utility Model Content

[0005] To address the aforementioned technical problems, the purpose of this application is to provide a nuclear power plant drawer cabinet equipped with a four-position drive mechanism. The four-position drive mechanism and the flexible adjustment mechanism work together to move the drawer unit relative to the cabinet body. At the same time, the user can also adjust the flexibility of the turbine assembly by adjusting the hand crank on the turbine assembly according to actual needs, thereby adjusting the flexibility and range of movement of the drawer unit.

[0006] To achieve the above objectives, a nuclear power plant drawer cabinet equipped with a four-position drive mechanism includes:

[0007] The cabinet body has a receiving slot inside;

[0008] A drawer unit, wherein the drawer unit is movably disposed within the receiving slot;

[0009] A four-position drive mechanism includes a turbine assembly and a transmission component that is pulsatorically connected to the turbine assembly. The transmission component is disposed in the receiving groove. The turbine assembly is rotatably disposed in the drawer unit to drive the drawer unit to move. The turbine assembly is adapted to be connected to a hand crank so that the hand crank drives the turbine assembly to rotate.

[0010] An elastic adjustment mechanism includes an elastic compression component and a movable component. The elastic compression component is disposed on the movable component and is movably disposed within the drawer unit so that the elastic compression component abuts against the turbine assembly.

[0011] In some embodiments, the turbine assembly includes a rotating bushing and a rotatably disposed turbine body, the drawer unit is provided with a notch, and the turbine body is connected to the transmission member through the notch;

[0012] The rotating bushing is connected to the turbine body, and one end of the drawer unit is provided with a hand crank hole corresponding to the rotating bushing, for the hand crank handle to be connected to the rotating bushing through the hand crank hole.

[0013] In some embodiments, the elastic compression assembly includes an elastic element and balls, the balls being disposed at one end of the elastic element and used to abut against the rotating bushing or the turbine body;

[0014] The movable component is connected to the end of the elastic element away from the ball, so as to cause the elastic element to compress or elongate.

[0015] In some embodiments, the movable component includes a mounting sleeve and a rotating member, the rotating member having an external thread and the mounting sleeve having an internal thread that mates with the external thread, so as to rotatably mount the rotating member within the mounting sleeve.

[0016] The elastic element is disposed within the mounting sleeve, and the end of the elastic element away from the ball is connected to the rotating element.

[0017] In some embodiments, a stationary slide rail and a movable slide rail are also included. The stationary slide rail is disposed on the bottom wall of the receiving groove, and the movable slide rail is disposed on the drawer unit and slidably connected to the stationary slide rail.

[0018] In some embodiments, the transmission component is mounted and fixed to the bottom wall of the receiving groove;

[0019] The outer surface of the turbine body is provided with a turbine groove that cooperates with the transmission component. The transmission component is disposed in the turbine groove through the notch so that the turbine body can drive the drawer unit to move.

[0020] In some embodiments, the rotating bushing is provided with positioning grooves that cooperate with the elastic compression assembly. There are three positioning grooves arranged along the circumference of the rotating bushing.

[0021] When the three positioning slots are respectively engaged with the elastic compression assembly, the drawer unit is in the isolation position, the test position, and the connection position, respectively.

[0022] In some embodiments, the drawer unit is further provided with a mounting frame, and the turbine body is rotatably disposed within the mounting frame.

[0023] In some embodiments, the drawer unit is further provided with a locking mechanism and a circuit breaker, the operating shaft of the circuit breaker being coupled to a rotary switch located at one end of the drawer unit, the locking mechanism being drivenly connected to the operating shaft and configured to move linearly between a first position and a second position under the rotational movement of the operating shaft;

[0024] The rotary switch is used to drive the operating shaft to rotate. When the locking mechanism is in the first position, the drawer unit can move relative to the cabinet. When the locking mechanism is in the second position, the drawer unit is fixed in the receiving slot.

[0025] In some embodiments, the locking mechanism includes:

[0026] A cam, which is fixedly sleeved on the outside of the operating shaft;

[0027] A sector-shaped crank, one end of which is fitted onto the outside of the cam;

[0028] A guide assembly, comprising a movable pin and a guide bracket, wherein the movable pin is movably inserted into the guide bracket, and the bottom wall of the drawer unit is provided with a through hole that mates with the movable pin, and the receiving groove is provided with a limiting hole corresponding to the through hole;

[0029] One end of the movable pin is connected to the end of the sector crank away from the cam, so that the movable pin can move relative to the guide bracket between the first position and the second position. When the movable pin is in the first position, the movable pin does not cooperate with the limiting hole. When the movable pin is in the second position, the movable pin is limited to cooperate with the limiting hole.

[0030] Compared with the prior art, the nuclear power plant drawer cabinet with a four-position drive mechanism provided in this application has the following advantages:

[0031] 1. This utility model provides a nuclear power plant drawer cabinet with a four-position drive mechanism. In use, the user can connect the hand crank to the turbine assembly for transmission. The hand crank drives the turbine assembly to rotate, thereby causing the drawer unit to move relative to the cabinet body. In addition, the user can adjust the flexibility of the turbine assembly through the elastic compression assembly, which makes it easy for the user to adjust the flexibility and range of movement of the drawer unit, thereby effectively improving the user experience.

[0032] 2. The present invention provides a nuclear power plant drawer cabinet with a four-position drive mechanism. Users can rotate the rotating component to move it relative to the mounting sleeve, thereby causing the elastic component to compress or stretch, and thus adjusting the force of the ball bearings on the rotating bushing or turbine body to adjust the flexibility of the turbine assembly. This allows users to adjust the range of motion of the drawer unit according to their own needs.

[0033] 3. The present invention provides a nuclear power plant drawer cabinet with a four-position drive mechanism. Three positioning grooves are provided on the rotating bushing. When the elastic compression component is in different positioning grooves, the drawer unit is in different positions. When the drawer unit is in the corresponding position, the positioning grooves and the elastic adjustment mechanism cooperate with each other to ensure the stability of the drawer unit.

[0034] 4. The present invention provides a nuclear power plant drawer cabinet with a four-position drive mechanism. A locking mechanism is also provided in the drawer unit. Users can adjust the connection between the drawer unit and the cabinet body by rotating the rotary switch to adjust the circuit breaker. Attached Figure Description

[0035] The preferred embodiments will now be described in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of this application.

[0036] Figure 1 This is a partial structural schematic diagram of a nuclear power plant drawer cabinet equipped with a four-position drive mechanism provided by this utility model;

[0037] Figure 2 This is a schematic diagram of the structure of a drawer unit of a nuclear power plant drawer cabinet equipped with a four-position drive mechanism provided by this utility model;

[0038] Figure 3 This utility model provides a structural schematic diagram of a turbine assembly for a nuclear power plant drawer cabinet equipped with a four-position drive mechanism;

[0039] Figure 4 This is a structural schematic diagram of a locking mechanism for a nuclear power plant drawer cabinet equipped with a four-position drive mechanism provided by this utility model;

[0040] Figure 5 This is a schematic diagram of the internal structure of an elastic adjustment mechanism for a nuclear power plant drawer cabinet equipped with a four-position drive mechanism, provided by this utility model.

[0041] Explanation of icon numbers:

[0042] Drawer unit 1, mounting frame 11, notch 12, circuit breaker 13, operating shaft 14, rotary switch 15, turbine assembly 2, rotating bushing 21, positioning groove 211, turbine body 22, turbine groove 221, transmission component 3, elastic compression assembly 4, elastic component 41, ball bearing 42, movable component 5, mounting sleeve 51, rotating component 52, locking mechanism 6, cam 61, sector crank 62, connecting shaft 621, guide bracket 63, moving pin 64, cabinet body 7. Detailed Implementation

[0043] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the specific implementation methods of this application will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without creative effort.

[0044] To keep the drawings concise, each drawing only schematically shows the parts relevant to the application; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" can mean not only "only one" but also "more than one."

[0045] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0046] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0048] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0049] In this embodiment, a nuclear power plant drawer cabinet with a four-position drive mechanism is described. The purpose is to adjust the flexibility of the turbine assembly 2 by cooperating with the four-position drive mechanism and the elastic adjustment mechanism, thereby adjusting the range of movement of the drawer unit 1 relative to the cabinet body 7 driven by the hand crank, so that the user can adjust the flexibility of the drawer unit 1 when it moves according to their actual needs.

[0050] For details, please refer to the instruction manual appendix. Figures 1 to 5 A nuclear power plant drawer cabinet equipped with a four-position drive mechanism includes a cabinet body 7, a drawer unit 1, a four-position drive mechanism, and a flexible adjustment mechanism. The cabinet body 7 provides a structure for mounting and supporting the drawer unit 1. A receiving slot is provided within the cabinet body 7, which is adapted to fit the drawer unit 1 to movably accommodate the drawer unit 1 within the receiving slot. Correspondingly, the four-position drive mechanism includes a turbine assembly 2 and a transmission component 3, with the transmission component 3 being drively connected to the turbine assembly 2. The transmission component 3 is disposed within the receiving slot, and the turbine assembly 2 is rotatably disposed within the drawer unit 1. With the cooperation of the transmission component 3, the turbine assembly 2 drives the drawer unit 1 to move relative to the cabinet body 7 within the receiving slot.

[0051] In addition, the turbine assembly 2 is suitable for connection with the hand crank. When the user needs to move the drawer unit 1, the hand crank (not shown in the figure) is connected to the turbine assembly 2. Then, by turning the hand crank, the turbine assembly 31 can be driven to rotate. In turn, under the action of the transmission component 3, the drawer unit 1 is driven to move along the direction of the receiving groove, so as to realize the operation of pulling out or pushing out the drawer unit 1. This facilitates the installation, debugging, maintenance or replacement of electrical components inside the switch cabinet.

[0052] Furthermore, the elastic adjustment mechanism includes an elastic compression component 4 and a movable component 5. The elastic compression component 4 is disposed on the movable component 5, which is movably disposed within the drawer unit 1. In normal operation, the movable component 5 is used to cause the elastic compression component 4 to abut against the turbine assembly 2, thereby applying a certain pressure to the turbine assembly 2 through the compression action of the elastic compression component 4. Accordingly, the pressure exerted on the turbine assembly 2 by the elastic compression component 4 is adjusted by moving the movable component 5, thereby adjusting the flexibility of the turbine assembly 2.

[0053] Understandably, in this embodiment, when using a nuclear power plant drawer cabinet equipped with a four-position drive mechanism, the user uses a hand crank to rotate the turbine assembly 2, thereby moving the drawer unit 1. Furthermore, if the movement range and flexibility (i.e., the movement speed of the drawer unit 1) do not meet the user's actual needs, the user can adjust the elastic adjustment mechanism. Under the action of the movable component 5, the user can adjust the pressure applied to the turbine assembly 2 by the elastic compression component 4, thereby adjusting the rotational flexibility of the turbine assembly 2. For example, when the drawer unit 1 has greater flexibility, the force applied to the turbine assembly 2 by the elastic compression component 4 can be increased; when the drawer unit 1 has less flexibility, the force applied to the turbine assembly 2 by the elastic compression component 4 can be decreased, thus adjusting the flexibility of the drawer unit 1 during movement to a suitable level.

[0054] In one embodiment, see the appendix to the specification. Figure 2 and Figure 5 This embodiment provides a specific structure for an elastic adjustment mechanism. The turbine assembly 2 includes an elastic element 41 and a ball bearing 42. One end of the elastic element 41 is fixed to a movable component 5, and the ball bearing 42 is located at the end of the elastic element 41 away from the movable component 5 and abuts against the turbine assembly 2. Thus, by moving the movable component 5, the elastic element 41 is compressed or extended, thereby adjusting the magnitude of the restoring force exerted on the ball bearing 42 by the elastic element 41, and consequently adjusting the force applied by the ball bearing 42 to the turbine assembly 2.

[0055] Furthermore, the movable component 5 includes a mounting sleeve 51 and a rotating member 52. The mounting sleeve 51 is fixedly mounted inside the drawer unit 1. An internal thread is provided within the mounting sleeve 51, and an external thread that mates with the internal thread is provided on the rotating member 52, so that one end of the rotating member 52 is rotatably mounted within the mounting sleeve 51. Correspondingly, an elastic member 41 is disposed within the mounting sleeve 51, and the end of the elastic member 41 away from the ball bearing 42 is connected to the rotating member 52.

[0056] Understandably, during use, rotating the rotating component 52 causes it to move up and down, thereby compressing or extending the elastic component 41, thus adjusting the force exerted on the turbine assembly 2 by the ball bearing 42. Specifically, when the user rotates the hand crank, causing the drawer unit 1 to move too quickly and making it difficult to accurately adjust its position, the user can rotate the rotating component 52 to compress the elastic component 41, increasing the force exerted on the turbine assembly 2 by the ball bearing 42, thereby reducing the flexibility of the turbine assembly 2 and thus reducing the speed and range of the drawer unit 1's movement. When the drawer unit 1's gripping speed is too slow, the user can rotate the gripping component 52 to extend the elastic component 41, reducing the force exerted on the turbine assembly 2 by the ball bearing 42, thereby increasing the flexibility of the turbine assembly 2.

[0057] Generally, the rotating part 52 is set as a screw. Of course, in actual production applications, a motor or telescopic cylinder or other driving component can be set to drive the rotating part 52 to move up and down. This will not be described in detail here, and all of them are within the protection scope of this utility model.

[0058] In one embodiment, see the appendix to the specification. Figure 3 The turbine assembly 2 includes a rotating sleeve 21 and a turbine body 22. The rotating sleeve 21 is connected to the turbine body 22. A hand crank hole corresponding to the rotating sleeve 21 is provided at one end of the drawer unit 1. The end of the rotating sleeve 21 away from the turbine body 22 is inserted into the hand crank hole so that the hand crank can be connected to the rotating sleeve 21, thereby driving the turbine body 22 to rotate. A notch corresponding to the turbine body 22 is provided on the drawer unit 1, and the turbine body 22 is connected to the transmission component 3 through the notch.

[0059] In addition, the elastic adjustment mechanism can be set to correspond with the rotating bushing 21 or the turbine body 22 so that the ball 42 abuts against the rotating bushing 21 or the turbine body 22, and the drawer unit 1 can be adjusted.

[0060] Furthermore, a nuclear power plant drawer cabinet equipped with a four-position drive mechanism also includes a moving slide rail and a stationary slide rail. Generally speaking, each drawer unit 1 has two corresponding moving slide rails on its bottom wall, while the stationary slide rail is installed and fixed on the bottom wall of the receiving slot. The moving slide rail and the stationary slide rail slide together to allow the drawer unit 1 to move within the receiving slot.

[0061] Furthermore, the transmission component 3 is mounted and fixed on the bottom wall of the receiving groove. A turbine groove 221 is provided on the outer surface of the turbine body 22. The transmission component 3, located in the receiving groove, passes through a notch and is positioned within the turbine groove 221. In use, the user inserts the hand crank into the rotating bushing 21 and rotates the hand crank, causing the turbine body 22 to rotate. This causes the transmission component 3 to move along the turbine groove 221, thereby moving the drawer unit 1 relative to the cabinet 7.

[0062] In one embodiment, this embodiment further describes a withdrawable power supply cabinet. The rotating bushing 21 has three positioning grooves 211 that cooperate with the elastic compression assembly 4, arranged circumferentially along the rotating bushing 21. The ball bearings 42 then cooperate with the rotating bushing 21.

[0063] Accordingly, when the elastic compression components engage with the positioning grooves 211 respectively, the drawer unit 1 is in different positions within the cabinet 7. That is, when the ball bearing 42 is located within the three positioning grooves 211, the drawer unit 1 is in the isolation position, the test position, and the connection position, respectively. Generally, the bottom wall of the positioning groove 211 is set as an arc surface that engages with the ball bearing 42, so that when the ball bearing 42 moves into the positioning groove 211, it serves a positioning function without affecting the continued movement of the ball bearing 42 along the rotating sleeve 21.

[0064] Furthermore, a turbine groove 221 is provided on the outer surface of the turbine body 22 and extends spirally from one end of the turbine body 22 to the other. Correspondingly, three nodes are sequentially provided in the extension direction of the turbine groove 221. When the transmission member 3 is sequentially located at the three nodes, the drawer unit 1 is in the isolation position, the test position, and the connection position, respectively. In addition, when the user pulls the drawer unit 1 out of the cabinet 7 through the four-position drive mechanism, the drawer unit 1 is in the pulled-out position.

[0065] In one embodiment, see the appendix to the specification. Figures 1 to 5 In this embodiment, the drawer unit 1 is also provided with a mounting frame 11, the turbine body 22 is rotatably disposed in the mounting frame 11, one end of the turbine body 22 passes through the mounting frame 11 and is connected to the rotating bushing 21, and the elastic adjustment mechanism is mounted and fixed on the mounting frame 11.

[0066] Furthermore, this utility model provides a nuclear power plant drawer cabinet equipped with a four-position drive mechanism, wherein a locking mechanism 6 and a circuit breaker 13 are provided in the drawer unit 1. The operating shaft 14 of the circuit breaker 13 is coupled to a rotary switch 15 provided at one end of the drawer unit 1. Correspondingly, the locking mechanism 6 is drively connected to the operating shaft 14 and is configured to move linearly between a first position and a second position under the rotational movement of the operating shaft 14.

[0067] Specifically, the rotary switch 15 is used to drive the operating shaft 14 to rotate. When the locking mechanism 5 is in the first position, the drawer unit 1 can move relative to the cabinet 7. When the locking mechanism 5 is in the second position, the drawer unit 1 is fixed in the receiving slot. In addition, it should be noted that when the user rotates the rotary switch 15 to drive the operating shaft 14 to rotate, the circuit breaker 13 can be switched between the open and closed states.

[0068] Specifically, when circuit breaker 13 is initially in the open state, rotating the operating shaft 14 via rotary switch 15 can close (close) circuit breaker 13. Specifically, the operating shaft 14 moves the locking mechanism 6 from a first position to a second position, causing circuit breaker 154 to change from the open state to the closed state. Correspondingly, when the locking mechanism 6 is in the first position, circuit breaker 13 is in the open state, and drawer unit 1 can move relative to cabinet 7. When the locking mechanism 6 is in the second position, circuit breaker 13 is in the closed state, and drawer unit 1 is fixed inside cabinet 7 and cannot move relative to cabinet 7.

[0069] Further, see the appendix to the instruction manual. Figure 5 The locking mechanism 6 includes a cam 61, a sector crank 62, and a guide assembly. The cam 61 is fixedly sleeved on the outside of the operating shaft 14, and one end of the sector crank 62 is sleeved on the outside of the cam 61. The other end of the sector crank 62 is provided with a connecting shaft 621, which is perpendicular to the sector crank 62.

[0070] Accordingly, the guide assembly includes a movable pin 64 and a guide bracket 63, with the guide bracket 63 fixedly mounted on the bottom wall of the drawer unit 1. One end of the movable pin 64 is movably inserted into the guide bracket 63. The movable pin 64 includes a first part and a second part vertically disposed at one end of the first part. The first part is movably inserted into the guide bracket 63, and a slot is provided at the end of the second part away from the first part. A connecting shaft 621 is vertically inserted into the slot, and the rotation of the operating shaft 14 drives the cam 61 and the sector crank 62, causing the connecting shaft 621 to move within the slot, thereby driving the movable pin 64 to move up and down, i.e., moving relative to the guide bracket 63 between a first position and a second position.

[0071] In addition, a through hole is provided on the bottom wall of the drawer unit 1 to cooperate with the first part of the movable pin 64, and a limiting hole corresponding to the through hole is provided in the receiving groove. The movable pin 64 moves up and down, so that the movable pin 64 passes through the through hole and is inserted into the limiting hole.

[0072] In practical applications, when drawer unit 1 needs to be pulled out of cabinet 7, the rotary switch 15 drives the operating shaft 14 to rotate, thereby causing the cam 61 to drive the sector crank 62 to rotate, which in turn moves the movable pin 64 along the guide bracket 63 to the first position. At this time, the circuit breaker 13 is in the open state, and the movable pin 64 does not engage with the limit hole, allowing drawer unit 1 to be pulled out smoothly. When drawer unit 1 needs to be fixed in cabinet 7, the rotary switch 15 again drives the operating shaft 14 to rotate, causing the movable pin 64 to move to the second position. At this time, the circuit breaker 13 is in the closed state, and one end of the movable pin 64 is inserted into the limit hole, thereby fixing drawer unit 1 in the receiving slot and ensuring the stability of drawer unit 1 when powered on inside cabinet 7.

[0073] Preferably, a limiting rod is provided on the guide bracket 63, penetrating the guide bracket 63. A slotted hole is provided on the first part of the guide bracket to mate with the limiting rod. The limiting rod passes through the slotted hole, allowing the movable pin 64 to move up and down relative to the limiting rod. A washer and a compressed spring are also fitted on the outside of the limiting rod. One end of the spring abuts against the washer, and the other end abuts against the inner wall of the guide bracket 63, which can limit the movement of the movable pin 64 to a certain extent, preventing the movable pin 64 from moving under its own weight and ensuring the stability of the circuit breaker 13.

[0074] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A nuclear power plant drawer cabinet equipped with a four-position drive mechanism, characterized in that, include: The cabinet body has a receiving slot inside; A drawer unit, wherein the drawer unit is movably disposed within the receiving slot; A four-position drive mechanism includes a turbine assembly and a transmission component that is pulsatorically connected to the turbine assembly. The transmission component is disposed in the receiving groove. The turbine assembly is rotatably disposed in the drawer unit to drive the drawer unit to move. The turbine assembly is adapted to be connected to a hand crank so that the hand crank drives the turbine assembly to rotate. An elastic adjustment mechanism includes an elastic compression component and a movable component. The elastic compression component is disposed on the movable component and is movably disposed within the drawer unit so that the elastic compression component abuts against the turbine assembly.

2. A nuclear power plant drawer cabinet with a four-position drive mechanism according to claim 1, characterized in that, The turbine assembly includes a rotating bushing and a rotatably disposed turbine body. The drawer unit is provided with a notch, and the turbine body is connected to the transmission component through the notch. The rotating bushing is connected to the turbine body, and one end of the drawer unit is provided with a hand crank hole corresponding to the rotating bushing, for the hand crank handle to be connected to the rotating bushing through the hand crank hole.

3. A nuclear power plant drawer cabinet with a four-position drive mechanism according to claim 2, characterized in that, The elastic compression assembly includes an elastic element and a ball bearing, wherein the ball bearing is disposed at one end of the elastic element and is used to abut against the rotating bushing or the turbine body; The movable component is connected to the end of the elastic element away from the ball, so as to cause the elastic element to compress or elongate.

4. A nuclear power plant drawer cabinet with a four-position drive mechanism according to claim 3, characterized in that, The movable component includes a mounting sleeve and a rotating part. The rotating part is provided with an external thread, and the mounting sleeve is provided with an internal thread that mates with the external thread, so that the rotating part can be rotatably mounted in the mounting sleeve. The elastic element is disposed within the mounting sleeve, and the end of the elastic element away from the ball is connected to the rotating element.

5. A nuclear power plant drawer cabinet equipped with a four-position drive mechanism according to any one of claims 2-4, characterized in that, It also includes a static slide rail and a movable slide rail. The static slide rail is disposed on the bottom wall of the receiving groove, and the movable slide rail is disposed on the drawer unit and slidably connected to the static slide rail.

6. A nuclear power plant drawer cabinet with a four-position drive mechanism according to claim 5, characterized in that, The transmission component is mounted and fixed on the bottom wall of the receiving groove; The outer surface of the turbine body is provided with a turbine groove that cooperates with the transmission component. The transmission component is disposed in the turbine groove through the notch so that the turbine body can drive the drawer unit to move.

7. A nuclear power plant drawer cabinet with a four-position drive mechanism according to claim 6, characterized in that, The rotating bushing is provided with positioning grooves that cooperate with the elastic extrusion component. There are three positioning grooves, which are arranged along the circumference of the rotating bushing. When the three positioning slots are respectively engaged with the elastic compression assembly, the drawer unit is in the isolation position, the test position, and the connection position, respectively.

8. A nuclear power plant drawer cabinet with a four-position drive mechanism according to claim 7, characterized in that, The drawer unit is also provided with a mounting frame, and the turbine body is rotatably mounted in the mounting frame.

9. A nuclear power plant drawer cabinet with a four-position drive mechanism according to claim 1, characterized in that, The drawer unit is also provided with a locking mechanism and a circuit breaker. The operating shaft of the circuit breaker is coupled to a rotary switch located at one end of the drawer unit. The locking mechanism is driven by the operating shaft and is configured to move linearly between a first position and a second position under the rotational movement of the operating shaft. The rotary switch is used to drive the operating shaft to rotate. When the locking mechanism is in the first position, the drawer unit can move relative to the cabinet. When the locking mechanism is in the second position, the drawer unit is fixed in the receiving slot.

10. A nuclear power plant drawer cabinet with a four-position drive mechanism according to claim 9, characterized in that, The locking mechanism includes: A cam, which is fixedly sleeved on the outside of the operating shaft; A sector-shaped crank, one end of which is fitted onto the outside of the cam; A guide assembly, comprising a movable pin and a guide bracket, wherein the movable pin is movably inserted into the guide bracket, and the bottom wall of the drawer unit is provided with a through hole that mates with the movable pin, and the receiving groove is provided with a limiting hole corresponding to the through hole; One end of the movable pin is connected to the end of the sector crank away from the cam, so that the movable pin can move relative to the guide bracket between the first position and the second position. When the movable pin is in the first position, the movable pin does not cooperate with the limiting hole. When the movable pin is in the second position, the movable pin is limited to cooperate with the limiting hole.

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