Drawer unit and low-voltage cabinet for nuclear power

Abstract

The invention provides a drawer unit for nuclear power and a low-voltage cabinet, the drawer unit for the low-voltage cabinet comprises a drawer, an electrical connection mechanism and a positioning mechanism, the drawer is movably arranged in a cabinet body of the low-voltage cabinet, and the electrical connection mechanism comprises a flexible plug connector and a socket assembly arranged in the cabinet body. The flexible plug connector is movably arranged at one end of the forward direction of the drawer, the positioning mechanism comprises a locking assembly and a triggering part, the locking assembly is arranged on the drawer and is suitable for being matched with the flexible plug connector, the triggering part is arranged in the cabinet body and is suitable for being in transmission connection with the locking assembly, and when the triggering part corresponds to the locking assembly, the flexible plug connector is locked. The triggering part is used for driving the locking assembly to be in limiting fit with the flexible plug connector, the flexible plug connector is fixed to the drawer, when the flexible plug connector is in insertion fit with the socket assembly, the drawer moves forwards by a preset distance, the limiting fit between the locking assembly and the flexible plug connector is relieved, and when the damping effect of the flexible plug connector is guaranteed, the flexible plug connector is fixed to the drawer. And the connection strength with the socket assembly can be ensured.

Description

Technical Field

[0001] This application relates to the technical field of switch cabinets, and further relates to a drawer unit and a low-voltage cabinet for nuclear power. Background Art

[0002] Low-voltage cabinets are control devices applied in fields such as industry, the tertiary industry, and infrastructure construction. They are commonly found in industries such as rail transit, nuclear power plants, high-rise buildings, and intelligent factories, and are used for control and protection during power transmission, distribution, and power conversion. Among them, drawer switch cabinets are the most widely used. They centrally distribute electric energy to downstream loads. The drawer unit is the most important component of the drawer switch cabinet. It has the function of distributing electric energy to each branch circuit and also undertakes functions such as measuring electrical parameters and controlling electrical circuits. These functions can currently be remotely realized in the background through an automated communication mode.

[0003] The low-voltage cabinet is composed of a cabinet body and a drawer unit equipped with main electrical components such as switches. The drawer unit moves relative to the cabinet body to achieve the insertion connection of plugs and sockets. When the low-voltage cabinet itself is working, some working areas may generate slight vibrations due to the working process of the equipment itself, or vibrations may also occur in the external environment where the low-voltage cabinet is located. This may affect the connection strength of the plugs and sockets and even lead to power outages.

[0004] Therefore, shock-absorbing mechanisms are provided on the plugs and sockets to achieve the floating connection of the plugs and sockets, thereby achieving the purpose of absorbing vibrations and ensuring the normal operation of the low-voltage cabinet. However, the floating connection method of the plugs and sockets makes it difficult for the plugs to be stably and reliably connected to the sockets, affecting the normal use of the low-voltage cabinet.

[0005] Therefore, the present invention is dedicated to providing a drawer unit and a low-voltage cabinet for nuclear power to solve the above technical problems. Summary of the Invention

[0006] Aiming at the above technical problems, the purpose of this application is to provide a drawer unit and a low-voltage cabinet for nuclear power. The flexible connector is movably arranged at one end of the drawer. Through the mutual cooperation of the trigger part and the locking component, the way of adjusting the position of the flexible connector arranged on the drawer can effectively improve the connection strength between the flexible connector and the socket component while ensuring the shock-absorbing effect of the flexible connector.

[0007] To achieve the above purpose, a drawer unit for nuclear power provided by this application includes:

[0008] A drawer movably arranged in the cabinet body of the low-voltage cabinet;

[0009] The electrical connection mechanism includes a flexible plug-in member and a socket assembly disposed within the cabinet, and the flexible plug-in member is movably disposed at one end of the drawer in the forward direction;

[0010] The positioning mechanism includes a locking assembly and a trigger portion. The locking assembly is disposed on the drawer and is adapted to cooperate with the flexible plug-in member. The trigger portion is disposed within the cabinet and is adapted to be drivingly connected to the locking assembly;

[0011] Wherein, when the trigger portion corresponds to the locking assembly, the trigger portion is used to drive the locking assembly to be in limiting cooperation with the flexible plug-in member to fix the flexible plug-in member on the drawer for the flexible plug-in member to be inserted and cooperated with the socket assembly. When the flexible plug-in member is inserted and cooperated with the socket assembly, the drawer moves forward a preset distance so that the locking assembly is disengaged from the limiting cooperation with the flexible plug-in member.

[0012] In some embodiments, the drawer includes a drawer body and a mounting bracket disposed at one end of the drawer body, and the flexible plug-in member is movably disposed on the mounting bracket;

[0013] The locking assembly is vertically movably disposed within the mounting bracket, and a waist-shaped hole is provided on the bottom wall of the drawer body. One end of the locking assembly is adapted to pass through the waist-shaped hole and be disposed outside the drawer for the trigger portion to drive the locking assembly.

[0014] In some embodiments, the flexible plug-in member includes:

[0015] Two corresponding first guiding members, the first guiding members are disposed on the mounting bracket and are adapted to reciprocate in the forward direction of the drawer;

[0016] A first plug, which is fixedly installed on the first guiding member and is used for inserting and cooperating with the socket assembly;

[0017] A first elastic member, which is sleeved outside the first guiding member and is disposed between the first plug and the mounting bracket;

[0018] Wherein, an avoidance groove cooperating with the first guiding member is provided on the locking assembly. When the locking assembly is disengaged from the limiting cooperation with the first guiding member, the avoidance groove is correspondingly disposed with the first guiding member for the first guiding member to pass through the avoidance groove and reciprocate. When the trigger portion drives the avoidance groove to move upward, the locking assembly is in limiting cooperation with the first guiding member so that the avoidance groove is staggered from the first guiding member, thereby limiting and fixing the first guiding member on the mounting bracket.

[0019] In some embodiments, the flexible connector further includes:

[0020] A second guiding member correspondingly disposed below the first guiding member, and two ends of the second guiding member are movably disposed through the first plug and the mounting bracket;

[0021] A second elastic member; the second elastic member is sleeved on the second guiding member and is located between the first plug and the mounting bracket. When the avoidance groove is staggered from the first guiding member, the second guiding member is used to fix the locking assembly in the mounting bracket, and the second guiding member is adapted to move under the action of an external force to allow the locking assembly to move, so that the avoidance groove corresponds to the first guiding member.

[0022] In some embodiments, each of the first guiding members includes a sliding plate and a guiding block, and the sliding plate is disposed on the mounting bracket so as to be movable back and forth;

[0023] The guiding block is disposed on one side where the two sliding plates are close to each other and is adapted to be in limiting cooperation with the locking assembly.

[0024] In some embodiments, the locking assembly includes:

[0025] A telescopic bracket disposed between the two sliding plates, including a corresponding first end and a second end. The second end is close to the kidney-shaped hole, the avoidance groove is opened on a side of the telescopic bracket close to the first guiding member, two corresponding mounting grooves are opened at the first end, and a first positioning plate is disposed in the mounting groove;

[0026] A floating rod disposed at the second end and adapted to be disposed outside the drawer through the kidney-shaped hole;

[0027] A second elastic member sleeved on the outside of the first positioning plate and abutted against the inner wall of the mounting bracket;

[0028] A notch groove corresponding to the mounting groove is provided at the second end, the guiding block is disposed in the notch groove, and a limiting portion adapted to be in limiting cooperation with the guiding block is disposed in the notch groove.

[0029] In some embodiments, the guiding block is disposed on a side of the limiting portion away from the first plug, and a first inclined surface is provided on a side of the limiting portion close to the guiding block;

[0030] When the avoidance groove corresponds to the first guiding member, the guiding block is closely attached to the first inclined surface. When the telescopic bracket moves upward, the first inclined surface moves upward along the guiding block so that the guiding block abuts against the lower end surface of the limiting portion.

[0031] In some embodiments, the electrical connection mechanism further includes a second plug fixedly mounted on the mounting bracket. The second plug is disposed above the first plug and is correspondingly arranged with the first elastic member.

[0032] In some embodiments, the socket assembly includes a first socket for mating with the first plug and a second socket for mating with the second plug.

[0033] A low-voltage cabinet includes a drawer unit for nuclear power as described in any one of the above, and further includes:

[0034] A cabinet body, in which a receiving groove for mating with the drawer is provided. A mounting seat is provided on the bottom wall of the receiving groove, and a guiding surface for mating with the locking assembly is provided on the mounting seat to form the triggering portion.

[0035] Compared with the prior art, the drawer unit for nuclear power and the low-voltage cabinet provided by the present application have the following beneficial effects:

[0036] 1. For the drawer unit for nuclear power provided by the present invention, the flexible plug-in member is movably disposed at one end of the drawer, which can realize the flexible connection between the drawer and the cabinet body, thereby playing a role in shock absorption and protecting the drawer. During the process of inserting the drawer into the cabinet body, the triggering portion drives the locking assembly to be in limit fit with the flexible plug-in member, and fixes the flexible plug-in member on the drawer, facilitating the stable and reliable insertion of the flexible plug-in member on the socket, effectively improving the connection strength and electrical safety between the two. After the flexible plug-in member is inserted and mated with the socket assembly, the drawer continues to move forward a preset distance, so that the locking assembly releases the limit fit with the flexible plug-in member, and restores the flexible connection between the drawer and the flexible plug-in member, ensuring the shock absorption effect of the flexible plug-in member. In this way, the stable connection and cooperation between the flexible plug-in member and the socket assembly can fully ensure the circuit safety, and at this time, the flexible connection between the flexible plug-in member and the drawer can fully absorb vibrations and ensure the safety of the electronic components inside the low-voltage cabinet.

[0037] 2. For the drawer unit for nuclear power provided by the present invention, the first guiding member is movably disposed at one end of the drawer, and the first elastic member is disposed between the first plug and the drawer. When vibrations occur, under the action of the first elastic member, the first guiding member has a good floating margin and can well absorb vibrations, reducing the possibility that the conduction between the flexible plug-in member and the socket assembly is disconnected due to vibrations. When the flexible plug-in member is inserted and mated with the socket assembly, the user can continue to move the drawer forward, so that the second guiding member moves backward under the action of the inner wall of the cabinet body, thereby enabling the guiding block to release the limit with the limiting portion, and further enabling the telescopic bracket to move downward under the action of the third elastic member, so that the avoidance groove is correspondingly arranged with the first guiding member, and further restoring the shock absorption effect of the flexible plug-in member. Brief Description of the Drawings

[0038] The following will further illustrate the above-mentioned features, technical features, advantages and their implementation manners of the present application in a clear and understandable manner in combination with the drawings of the preferred embodiments.

[0039] Figure 1 It is a schematic structural view of a drawer unit for nuclear power provided by the present invention;

[0040] Figure 2 It is a schematic structural view of a drawer of a drawer unit for nuclear power provided by the present invention;

[0041] Figure 3 It is a schematic structural view of a flexible connector of a drawer unit for nuclear power provided by the present invention;

[0042] Figure 4 It is a schematic structural view of a locking assembly of a drawer unit for nuclear power provided by the present invention;

[0043] Figure 5 It is a schematic structural view when the guiding block and the limiting part cooperate with each other provided by the present invention;

[0044] Figure 6 It is a bottom view of a drawer unit for nuclear power provided by the present invention;

[0045] Figure 7 It is a schematic internal structural view of a low-voltage cabinet provided by the present invention.

[0046] Explanation of the Reference Numerals in the Drawings:

[0047] Drawer 1, drawer body 11, mounting rack 12, first bracket 121, second bracket 122, cabinet body 2, triggering part 21, flexible connector 3, first guiding part 31, first plug 32, first elastic part 33, second guiding part 34, sliding plate 341, second positioning plate 3411, guiding block 342, second inclined surface 343, second elastic part 35, second plug 36, locking assembly 4, telescopic bracket 41, first end 411, second end 412, notch groove 413, mounting groove 414, first positioning plate 415, limiting part 416, first inclined surface 417, avoiding groove 418, third elastic part 42, floating rod 43. Detailed Embodiments

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the specific embodiments of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts, and other embodiments can also be obtained.

[0049] To simplify the drawings, only the parts related to the application are schematically shown in each figure, and they do not represent the actual structure of the product. Additionally, to simplify the drawings for better understanding, for components with the same structure or function in some figures, only one of them is schematically shown, or only one of them is labeled. In this document, "one" not only means "only this one", but also can mean "more than one" situation.

[0050] It should also be further understood that the term "and / or" used in the description of this application and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0051] In this document, it should be noted that unless otherwise clearly specified and limited, the terms "install", "connect", and "join" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0052] In the description of this application, it should be understood that the orientation or positional relationship indicated by 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. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0053] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0054] In this embodiment, a drawer 1 unit for a low-voltage cabinet is described. Through the mutual cooperation of the trigger part 21 and the locking assembly 4, while realizing the flexible connection between the flexible connector 3 and the socket assembly to ensure the shock absorption effect, the stable connection between the flexible connector 3 and the socket assembly is also realized.

[0055] It is understandable that during the operation of the low-voltage cabinet in the prior art, certain vibrations may occur inside or outside the low-voltage cabinet, which may affect the connection firmness between the plug and the socket, and even cause power outages. In view of this, people equip the plug and the socket with a shock-absorbing component to form a floating connection. However, this floating connection makes it difficult to form a stable and reliable connection when the plug and the socket are plugged in, thereby interfering with the normal use of the low-voltage cabinet.

[0056] In this embodiment, see the attached Figures 1 to 6 The drawer unit of the present invention mainly includes a drawer 1, an electrical connection mechanism and a positioning mechanism. The drawer is movably arranged in the cabinet body 2 of the low-voltage cabinet, so that the drawer 1 can be smoothly pulled out and inserted in the cabinet body 2. The electrical connection mechanism includes a flexible connector 3 and a socket assembly. The flexible connector 3 is movably arranged at one end of the drawer 1 and is located in the forward direction of the drawer 1, so that the flexible connector 3 has a certain floating margin relative to the drawer 1 to absorb vibration. Among them, the socket assembly is arranged in the cabinet body 2 and connected to the electrical system in the cabinet body 2. When the drawer 1 moves forward, the flexible connector 3 is used to accurately plug and match with the socket assembly to achieve electrical connection. The positioning mechanism includes a locking assembly 4 and a trigger part. The locking assembly 4 is arranged on the drawer 1 and is suitable for matching with the flexible connector 3, and the trigger part 21 is arranged in the cabinet body 2 and is suitable for transmission connection with the locking assembly 4, which is used to brake the locking assembly 4 and limit the matching with the flexible connector 3. Specifically, when the drawer 1 moves relative to the cabinet 2, so that the trigger part 21 corresponds to the locking assembly 4, the trigger part 21 can drive the locking assembly 4 to limit the flexible connector 3, and fix the flexible connector 3 on the drawer 1, so that the flexible connector 3 can be stably and reliably plugged into the socket assembly, ensuring the connection strength and electrical safety of the two. When the flexible connector 3 is plugged into the socket assembly, the user can push the drawer 1 forward by a preset distance, so that the locking assembly 4 and the flexible connector 3 are released from the limit, so that the flexible connector 3 can be movably arranged on the drawer 1, and the shock absorbing effect of the flexible connector 3 is restored.

[0057] In this embodiment, the state of the flexible connector 3 relative to the drawer 1 can be adjusted by setting the trigger part 21 and the locking assembly 4. When the flexible connector 3 is fixed on the drawer 1, the flexible connector 3 and the socket assembly can form a stable and reliable connection, ensuring the connection strength between the flexible connector 3 and the socket assembly. After the flexible connector 3 is stably connected to the socket assembly, the shock absorbing effect of the flexible connector 3 can be restored by adjusting the flexible connector 3 to be movably connected to the drawer 1, thereby achieving a stable electrical connection while absorbing vibrations, ensuring the stability and reliability of the operation of the low-voltage cabinet.

[0058] In one embodiment, refer to the appended drawings of the specification Figure 2 , and this embodiment further describes a drawer unit for nuclear power. Among them, the drawer 1 includes a drawer body 11 and a mounting rack 12. The mounting rack 12 is arranged at one end of the drawer body 11. Correspondingly, the flexible plug-in connector 3 is movably arranged on the mounting rack 12.

[0059] Furthermore, the locking assembly 4 is vertically movably arranged in the mounting rack 12. Correspondingly, a waist-shaped hole matching with the locking assembly 4 is arranged on the bottom wall of the drawer body 11, so that one end of the locking assembly 4 passes through the waist-shaped hole and is arranged outside the drawer 1, and then cooperates with the trigger part 21 arranged in the cabinet body 2.

[0060] Furthermore, refer to the appended drawings of the specification Figure 1 and Figure 2 , and this embodiment further describes the flexible plug-in connector 3. Among them, the flexible plug-in connector 3 includes a first plug 32, a first elastic member 33 and two correspondingly arranged first guiding members 31. Among them, the first guiding member 31 is movably arranged at one end of the drawer 1, that is, reciprocally movably arranged on the mounting rack 12 and located in the forward direction of the drawer 1, and is used to cooperate with the locking assembly 4. The state of the first guiding member 31 relative to the drawer 1 is adjusted through the locking assembly 4, that is, the first guiding member 31 can move relative to the drawer 1 or be fixed on the drawer 1.

[0061] Correspondingly, the first plug 32 is arranged on the two first guiding members 31, so that the first plug 32 is fixedly connected to the first guiding member 31, so that the first plug 32 and the first guiding member 31 can move synchronously relative to the drawer 1. In addition, the first elastic member 33 is sleeved outside the first guiding member 31, and both ends of the first elastic member 33 respectively abut against the first plug 32 and the drawer 1.

[0062] It can be understood that when the electronic components in the low-voltage cabinet vibrate during operation or external vibration occurs, relative movement can occur between the first plug 32 and the drawer 1, and the vibration is absorbed under the action of the first elastic member 33, so as to play a role in shock absorption and protecting the operation of the low-voltage cabinet.

[0063] It should be pointed out that, in order to facilitate the description of the limiting effect of the locking assembly 4 on the first guide member 31, the locking assembly 4 has a first position and a second position relative to the mounting frame 12, and a avoidance groove 418 matching with the first guide member 31 is provided on the locking assembly 4. When one end of the locking assembly 4 is set outside the drawer 1 through the through hole, the locking assembly 4 is in the first position at this time, and the limiting cooperation with the first guide member 31 is released, so that the avoidance groove 418 is set corresponding to the first guide member 31, and the first guide member 31 can move back and forth through the avoidance groove 418 at this time, so as to realize the shock absorption effect of the flexible plug 3. When the trigger part 21 drives the locking assembly 4 to move upward so that the avoidance groove 418 is staggered with the first guide member 31, the locking assembly 4 is in the second position at this time, and the locking assembly 4 is limited and matched with the first guide member 31, so that the first guide member 31 is blocked by the locking assembly 4 and cannot move, thereby fixing the first plug 32 on the drawer 1.

[0064] Furthermore, the flexible connector 3 also includes a second elastic member 35 and two second guide members 34 correspondingly arranged below the first guide member 31, the second guide member 34 is arranged between the first plug 32 and the drawer 1, and the second elastic member 35 is sleeved on the outside of the second guide member 34. In this embodiment, through the setting of the second guide member 34, an approximately rectangular connection is formed between the first plug 32 and the drawer 1.

[0065] It should be noted that one end of the second guide member 34 is movably inserted on the mounting frame 12, and the other end is movably inserted on the first plug 32. It is understandable that the arrangement of the second guide member 34 and the second elastic member 35 can further increase the floating margin between the first plug 32 and the drawer 1, and improve the shock absorption effect. Preferably, the movable gap between the first plug 32 and the second guide member 34 should be reduced as much as possible to ensure that the locking assembly 4 acts on the first guide member 31 to fix the first plug 32.

[0066] In addition, it can be understood that the triggering part 21 is used to drive the locking component 4 to move upward, so that the avoidance groove 418 and the first guiding part 31 are staggered from each other. At this time, the second guiding part 34 is used to fix the locking component 4 in the mounting frame 12 to prevent the locking component 4 from moving downward, so as to ensure the limiting effect of the locking component 4 on the first guiding part 31. Correspondingly, when the first guiding part 31 is fixed on the mounting frame 12, the second guiding part 34 is adapted to move under the action of an external force (that is, when the flexible plug-in part 3 is inserted and matched with the socket component, the drawer 1 moves forward a preset distance, so that the second guiding part 34 abuts against the inner wall of the cabinet body 2 and moves under the action of the cabinet body 2, thereby restoring the shock absorption function of the flexible plug-in part 3), so as to release its own limiting effect on the locking component 4, that is, to make the locking component 4 move downward, and then the avoidance groove 418 corresponds to the first guiding part 31.

[0067] It should be noted that the end of the second guiding part 34 away from the drawer is located in front of the first guiding part 31, and after the first plug 32 is inserted and matched with the socket component, during the process that the drawer 1 continues to move forward a preset distance, at this time the first plug 32 is still fixedly arranged on the mounting frame 12, and the first plug 32 can still continue to move a certain distance in the socket component by being inserted, so that the second guiding part 34 moves forward to contact the inner wall of the cabinet body 2.

[0068] In one embodiment, refer to the appended drawings of the specification Figures 3 to 6 In this embodiment, the first guiding part 31 is further described. Each first guiding part 31 includes a sliding plate 341 and a guiding block 342. Mounting holes are respectively arranged on opposite sides of the mounting frame 12, and the sliding plates 341 of the two first guiding parts 31 are respectively movably arranged on the mounting frame 12 through the mounting holes in a front-back direction, and the two guiding blocks 342 are respectively arranged on one side of the two sliding plates 341 close to each other and are adapted to cooperate with the locking component 4.

[0069] Preferably, a through groove is arranged inside the sliding plate 341 along the extending direction of the sliding plate 341. A second positioning plate 3411 is arranged in the through groove, and a second elastic member 35 is arranged in the through groove and sleeved outside the second positioning plate 3411 to prevent the sliding plate 341 from falling off the drawer 1.

[0070] Further, refer to the appended drawings of the specification Figures 1 to 6The locking assembly 4 includes a telescopic bracket 41, a floating rod 43 and a third elastic member 42, wherein the telescopic bracket 41 is arranged between the two sliding plates 341, and has a first end 411 and a second end 412 arranged correspondingly, the second end 412 being arranged close to the waist hole, and the floating rod 43 being arranged on a side of the second end 412 away from the first end 411, and being suitable for being arranged outside the drawer 1 through the waist hole, for cooperating with the triggering part 21. Accordingly, a through hole cooperating with the telescopic bracket 41 is provided on the upper end surface of the mounting frame 12, so that the first end 411 of the telescopic bracket 41 is inserted into the through hole, and the telescopic bracket 41 cannot be moved to the outside of the drawer 1 through the through hole.

[0071] In addition, two corresponding notch grooves 413 are provided at the second end 412. The two notch grooves 413 are respectively arranged on both sides perpendicular to the forward direction of the drawer 1. Correspondingly, two guide blocks 342 are respectively arranged in the notch grooves 413. Limiting portions 416 corresponding to the front and rear of the guide blocks 342 are provided in the notch grooves 413. The second guide member 34 is moved relative to the mounting frame 12 to adjust the distance between the guide block 342 and the limiting portion 416.

[0072] Correspondingly, a mounting groove 414 is provided in the first end 411, and the mounting groove 414 is provided corresponding to the notch groove 413. A vertically provided first positioning plate 415 is provided in the mounting groove 414, and the third elastic member 42 is sleeved on the outer side of the first positioning plate 415, so that the two ends of the third elastic member 42 are respectively abutted against the mounting frame 12 and the bottom wall of the mounting groove 414. When the telescopic bracket 41 moves upward, the third elastic member 42 can be driven to be compressed, so that the telescopic bracket 41 has a tendency to move downward.

[0073] See the instruction manual Figure 5 A first inclined surface 417 is provided on the side of the limiting portion 416 close to the guide block 342, and correspondingly, a second inclined surface 343 is provided on the side of the guide block 342 close to the limiting portion 416. When the telescopic bracket 41 is set in the first position, the second inclined surface 343 of the guide block 342 is closely attached to the first inclined surface 417, and the first plug 32 can move forward and backward relative to the second guide member 34 at this time, thereby playing a role of shock absorption. When the telescopic bracket 41 moves upward, the avoidance groove 418 is staggered with the first guide member 31, the third elastic member 42 is compressed, the first inclined surface 417 moves upward along the second inclined surface 343, and the guide block 342 is squeezed and moves in a direction away from the limiting portion 416, and moves to the bottom of the limiting portion 416 under the action of the second elastic member 35, and the limiting portion 416 is contacted and squeezed with the upper end surface of the guide block 312 under the action of the third elastic member 42, which plays a role in limiting the downward movement of the telescopic bracket 41.

[0074] The working principle is as follows: When the drawer 1 is inserted between the cabinet bodies 2, the locking component 4 is adjusted to the first position. One end of the locking component 4 passes through the waist-shaped hole and is arranged outside the drawer 1. At this time, the locking component 4 is not in a limiting fit with the first guiding member 31, so that the first plug 32 is flexibly connected to the drawer 1. When the drawer 1 moves forward, when the drawer 1 moves to a position where the triggering part 21 corresponds to the locking component 4, the triggering part 21 can drive the locking component 4 to move upward to the second position, so that the avoidance groove 418 is staggered from the first guiding member 31. At this time, the guiding block 312 abuts against the lower end surface of the limiting part 416, restricting the telescopic bracket 41 from moving downward, and the first guiding member 31 will be blocked by the telescopic bracket 41, thereby fixing the second plug 36 on the drawer 1. Drive the drawer fixedly installed with the first plug 32 to continue moving, so that the fixed first plug 32 is fully inserted and matched with the socket assembly to ensure the connection strength between the two. After the first plug 32 is inserted and matched with the socket assembly, continue to drive the drawer 1 to move forward a preset distance, and then the second guiding member 34 will move backward under the action of the inner wall of the cabinet body 2, so that the guiding block 342 is separated from the limiting part 416, and further the telescopic bracket 41 moves downward under the action of the third elastic member 42, so that the avoidance groove 418 is arranged corresponding to the first guiding member 31, thereby restoring the shock absorption effect of the flexible plug-in connector 3.

[0075] In one embodiment, referring to the accompanying drawings of the specification Figure 2 , the mounting bracket 12 includes a first bracket 121 and a second bracket 122. The first bracket 121 is fixedly installed on the drawer body 11, and the second bracket 122 is fixedly installed on the first bracket 121. Correspondingly, the flexible plug-in connector 3 is movably arranged above the first bracket 121.

[0076] Furthermore, the electrical connection mechanism further includes a second plug 51. The second plug 51 is fixedly installed on the second bracket 122 of the mounting bracket 12. Correspondingly, the socket assembly includes a first socket and a second socket. The first socket is used for inserting and matching with the first plug 32, and the second socket is used for inserting and matching with the second plug 51.

[0077] In one embodiment, referring to the accompanying drawings of the specification Figure 7 , this embodiment provides a low-voltage cabinet, including a drawer unit for nuclear power as described in any one of the above embodiments, and further including a cabinet body 2. A receiving groove matching with the drawer 1 is arranged in the cabinet body 2, and a mounting seat is arranged on the inner wall of the receiving groove. A guiding surface matching with the locking component 4 is arranged on the mounting seat to form a triggering part 21.

[0078] Specifically, two moving slide rails arranged in parallel are provided on the lower end surface of the drawer 1 for the drawer 1 to move relative to the cabinet body 2. Correspondingly, the floating rod 43 extends out of the drawer 1 through the through hole and is located between the two moving slide rails. When the drawer 1 moves to a position where the trigger portion 21 corresponds to the floating rod 43, the floating rod 43 can move upward along the guiding surface, thereby driving the telescopic bracket 41 to move upward. Preferably, a guiding surface is also provided on one side of the mounting seat close to the socket assembly to facilitate pulling out the drawer 1 from the cabinet body 2.

[0079] In addition, a guiding pin is further provided in the accommodating groove, and a jack cooperating with the guiding pin is further provided on the drawer body 11 for guiding and positioning when the drawer 1 moves in the cabinet body 2.

[0080] It should be noted that the above-mentioned embodiments can be freely combined according to needs. The above are only the preferred embodiments of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A drawer unit for nuclear power, characterized in that: include: A drawer is movably arranged in the cabinet body of the low-voltage cabinet; An electrical connection mechanism, comprising a flexible connector and a socket assembly disposed in the cabinet, wherein the flexible connector is movably disposed at one end of the forward direction of the drawer; The positioning mechanism comprises a locking assembly and a triggering part, wherein the locking assembly is arranged on the drawer and is suitable for cooperating with the flexible plug-in component, and the triggering part is arranged in the cabinet and is suitable for transmission connection with the locking assembly; Among them, when the trigger part corresponds to the locking assembly, the trigger part is used to drive the locking assembly to limit the cooperation with the flexible connector to fix the flexible connector on the drawer, so as to allow the flexible connector to be plugged and matched with the socket assembly. When the flexible connector is plugged and matched with the socket assembly, the drawer moves forward a preset distance to release the limiting cooperation with the locking assembly.

2. A drawer unit for nuclear power according to claim 1, characterized in that: The drawer comprises a drawer body and a mounting frame arranged at one end of the drawer body, and the flexible connector is movably arranged on the mounting frame; The locking assembly is movably arranged in the mounting frame, a waist hole is arranged on the bottom wall of the drawer body, and one end of the locking assembly is suitable for passing through the waist hole and being arranged outside the drawer so that the trigger part can drive the locking assembly.

3. A drawer unit for nuclear power according to claim 2, characterized in that: The flexible connector comprises: two corresponding first guide members, which are arranged on the mounting frame and are adapted to reciprocate in the forward direction of the drawer; A first plug, mounted and fixed on the first guide member, for plugging and mating with the socket assembly; A first elastic member, sleeved on the outer side of the first guide member and arranged between the first plug and the mounting frame; Among them, the locking assembly is provided with an avoidance groove that cooperates with the first guide member. When the locking assembly and the first guide member are released from the limiting cooperation, the avoidance groove and the first guide member are correspondingly arranged to allow the first guide member to reciprocate through the avoidance groove. When the trigger part drives the avoidance groove to move upward, the locking assembly and the first guide member are limitedly cooperated so that the avoidance groove and the first guide member are staggered, thereby limiting and fixing the first guide member on the mounting frame.

4. A drawer unit for nuclear power according to claim 3, characterized in that: The flexible connector also includes: A second guide member is correspondingly arranged below the first guide member, and two ends of the second guide member are movably arranged to pass through the first plug and the mounting frame; A second elastic member, the second elastic member is sleeved on the second guide member and is located between the first plug and the mounting frame, when the avoidance groove is offset from the first guide member, the second guide member is used to fix the locking assembly in the mounting frame, and the second guide member is suitable for moving under the action of an external force to allow the locking assembly to move, so that the avoidance groove corresponds to the first guide member.

5. A drawer unit for nuclear power according to claim 4, characterized in that: Each of the first guide members comprises a sliding plate and a guide block, wherein the sliding plate is arranged on the mounting frame so as to be movable forward and backward; The guide block is arranged on one side where the two sliding plates are close to each other, and is suitable for limiting cooperation with the locking assembly.

6. A drawer unit for nuclear power according to claim 5, characterized in that: The locking assembly comprises: A telescopic bracket disposed between the two sliding plates, comprising a corresponding first end and a second end, wherein the second end is disposed close to the waist hole, the avoidance groove is disposed on a side of the telescopic bracket close to the first guide member, and the first end is disposed with two corresponding mounting grooves, wherein a first positioning plate is disposed in the mounting groove; A floating rod, arranged at the second end and adapted to be arranged outside the drawer through the waist hole; A second elastic member is sleeved on the outer side of the first positioning plate and abuts against the inner wall of the mounting frame; The second end is provided with a notch groove corresponding to the mounting groove, the guide block is arranged in the notch groove, and a limiting portion suitable for limiting and cooperating with the guide block is arranged in the notch groove.

7. A drawer unit for nuclear power according to claim 6, characterized in that: The guide block is arranged on a side of the limiting portion away from the first plug, and a first inclined surface is arranged on a side of the limiting portion close to the guide block; When the avoidance groove corresponds to the first guide member, the guide block is tightly attached to the first inclined surface, and when the telescopic bracket moves upward, the first inclined surface moves upward along the guide block so that the guide block abuts against the lower end surface of the limiting portion.

8. A drawer unit for nuclear power according to any one of claims 3 to 7, characterized in that: The electrical connection mechanism also includes a second plug mounted and fixed on the mounting frame. The second plug is arranged above the first plug and corresponds to the first elastic member.

9. A drawer unit for nuclear power according to claim 8, characterized in that: The socket assembly includes a first socket for mating with a first plug and a second socket for mating with the second plug.

10. A low voltage cabinet, characterized in that: A drawer unit for nuclear power comprising any one of claims 1 to 9, further comprising: A cabinet body is provided with a receiving groove matched with the drawer, a mounting seat is provided on the bottom wall of the receiving groove, and a guide surface matched with the locking assembly is provided on the mounting seat to form the triggering part.

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