Intelligent laboratory big data platform based on BIM and VR

Abstract

The invention discloses an intelligent laboratory big data platform based on BIM and VR, and solves the problem that connection between a cable and a server is easy to loosen and separate, the intelligent laboratory big data platform comprises a cabinet, a cabinet door is hinged to the front side of the cabinet, support placement assemblies are equidistantly mounted in the cabinet, and each support placement assembly comprises a support plate. A server body for data processing is placed above the supporting plate, rotation limiting units are arranged on the side, close to the front face of the cabinet, of the supporting plate and the side, close to the back face of the cabinet, a rotation driving unit is installed at the bottom end of the supporting plate, and an installation limiting assembly is installed between the cabinet and the supporting plate; according to the invention, during work, the cable passes through the threading groove and the plug is inserted into the jack, so that the cable can be conveniently guided, and after the pressing plate is pressed downwards, the pressing block is pushed to move downwards to press and fix the cable, so that the cable is prevented from being loosened and separated from the server body during big data calculation, and the big data calculation stability is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of big data platforms, and specifically is a smart laboratory big data platform based on BIM and VR. Background Art

[0002] The smart laboratory big data platform integrates BIM and VR technologies, aiming to provide comprehensive, efficient and intelligent support for laboratory planning, construction, operation management, scientific research and teaching activities. By combining the physical space information of the laboratory with the virtual simulation environment, and using big data analysis and mining technology, it can achieve multiple goals such as optimal allocation of laboratory resources, safety monitoring, experimental process simulation and optimization, and improve the overall efficiency and innovation ability of the laboratory. It consists of a data acquisition layer, a data storage and management layer, a BIM and VR engine layer, and a data analysis and mining layer. The main method used in the laboratory is to analyze the collected data through the server, but there are the following defects:

[0003] When connecting to the server, the cable plug is usually directly inserted into the server jack for connection. However, this type of connection may cause the plug to loosen and separate from the jack, causing data analysis to be interrupted, thus affecting the progress of the smart experiment. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a smart laboratory big data platform based on BIM and VR, which effectively solves the problem of loose connection and separation between cables and servers.

[0005] To achieve the above object, the present invention provides the following technical solutions: a BIM and VR-based smart laboratory big data platform, comprising a cabinet, a cabinet door is hingedly installed on the front of the cabinet, and supporting placement components are equidistantly installed inside the cabinet;

[0006] The supporting and placing component includes a supporting plate, a server body for data processing is placed on the supporting plate, a rotation limit unit is arranged on the side of the supporting plate close to the front of the cabinet and the side close to the back of the cabinet, a rotation drive unit is installed at the bottom of the supporting plate, and an installation limit component is installed between the cabinet and the supporting plate;

[0007] The rotation limit unit includes a rotation limit plate arranged on both sides of the cabinet, and wire grooves are equidistantly provided on the rotation limit plate. The wire grooves correspond one to one with the sockets of the server body. A clamping block is arranged inside the wire groove, and the clamping block is used to clamp and fix the wire harness. An auxiliary limit unit is installed on the rotation limit plate, and a snap-on positioning unit is installed on the rotation limit plate.

[0008] Preferably, a top groove is provided at the top of the wire threading groove, a pressure rod is fixed at the top of the clamping block, a pressure plate is arranged above the rotating limit plate, the pressure plate is fixedly connected to the top of the pressure rod, a rotating shaft is fixedly installed at the bottom of both ends of the rotating limit plate, and fixed plates are symmetrically arranged at both ends of the rotating limit plate, the fixed plates are rotatably connected to the rotating shaft, and the fixed plates are fixedly installed on the side walls of the support plate.

[0009] Preferably, the auxiliary limiting unit includes two plate grooves symmetrically installed on the rotating limiting plate, a slide is slidably installed inside the plate groove, a limiting block is installed at one end of the slide away from the server body, and a clamping block is installed at the other end of the slide, and the limiting block and the clamping block are respectively arranged on both sides of the rotating limiting plate.

[0010] Preferably, a push connecting rod is hingedly installed on the top end of the clamping block, the other end of the push connecting rod is hingedly installed with the pressure plate, and the end of the push connecting rod close to the pressure plate is tilted upward.

[0011] Preferably, the snap-on positioning unit includes a movable groove opened inside the rotating limit plate, a movable block is slidably installed inside the movable groove, a connecting rod is installed at the top of the movable block, the top of the connecting rod passes through the top of the rotating limit plate, the top of the connecting rod is fixedly connected to the pressure plate, and a support spring is fixedly installed at the bottom end of the movable block, and the bottom end of the support spring is fixedly connected to the inner bottom wall of the movable groove.

[0012] Preferably, a positioning groove is provided on the side of the movable groove away from the server body, the positioning groove is located below the movable block, a movable groove is provided inside the movable block, one end of the movable groove penetrates to the side of the movable block away from the server body, a movable card block is movably installed inside the movable block, a compression spring is symmetrically installed on the side of the movable card block close to the server body, one end of the compression spring is fixedly connected to the inner wall of the movable groove, and the end of the movable card block contacts the inner wall of the side of the movable groove away from the server body.

[0013] Preferably, the rotation drive unit includes a gear coaxially fixedly mounted on the rotating shaft, a rack is meshingly connected to the side of the gear away from the support plate, a side connecting plate is fixedly mounted between the two racks on the same side, a middle connecting plate is fixedly mounted between the two side connecting plates, and the middle connecting plate is located below the support plate.

[0014] Preferably, a limit swivel block is rotatably installed on the middle connecting plate, a handle is fixedly installed on the bottom end of the limit swivel block, a screw is fixedly installed on the top end of the limit swivel block, the screw thread is installed inside the screw groove, and the screw groove is opened at the bottom end of the support plate.

[0015] Preferably, the installation limit assembly includes sliding grooves symmetrically opened on the inner walls on both sides of the cabinet, both ends of the support plate are slidably connected to the sliding grooves, a top groove is opened at the top of the sliding groove, a limit rod is slidably installed inside the top groove, a return spring is installed at the top of the top groove, the top of the return spring is fixedly connected to the inner top wall of the top groove, a connecting groove is opened on the side of the return spring close to the front of the cabinet, a push plate is fixedly installed on the limit rod, and the push plate is slidably connected to the connecting groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) During operation, the threading groove on the rotating limit plate corresponds to the position of the socket on the server body. When wiring, the cable is passed through the threading groove and the plug is inserted into the socket, which is convenient for guiding the cable. After the pressing plate is pressed downward, the pressing block is pushed downward to press and fix the cable, thereby preventing the cable from loosening and separating from the server body during big data calculation, thereby improving the stability of big data calculation;

[0018] 2) During operation, two slides are symmetrically slidably installed on the rotating limit plate, and a clamping block is installed at one end of the slide close to the server body. When the pressure plate moves downward, the slide is pushed toward the side of the top slot by pushing the connecting rod, so that the four clamping blocks clamp and fix the server body, so that the rotating limit plate and the server body are relatively stationary, further avoiding the loosening and separation of the cable and the server body during big data computing, thereby improving the stability of big data computing;

[0019] 3) During operation, the middle connecting plate is moved longitudinally, which in turn drives each rack to move longitudinally, and the rack is meshed with the gear on the rotating shaft, thereby driving the rotating limit plate to rotate with the rotating shaft as the axis, so that the rotating limit plate can be rotated to two states: horizontal with the support plate and vertical with the support plate. When it is horizontal, it is convenient to take and place the server body. When it is vertical, the two rotating limit plates and the inner walls on both sides of the cabinet limit the server body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0021] In the attached picture:

[0022] Figure 1 This is a structural schematic diagram of a smart laboratory big data platform based on BIM and VR in the present invention;

[0023] Figure 2 It is a schematic diagram of the internal structure of the cabinet of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the installation limit assembly of the present invention;

[0025] Figure 4 It is a schematic diagram of the structure of the support and placement assembly of the present invention;

[0026] Figure 5 It is a schematic diagram of the support plate structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the rotation limiting plate of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the clamping and positioning unit of the present invention;

[0029] Figure 8 It is a schematic diagram of the internal structure of the movable block of the present invention;

[0030] Fig. 9 It is a schematic diagram of the structure of the auxiliary limiting unit of the present invention;

[0031] Fig.10 It is a schematic diagram of the structure of the rotation drive unit of the present invention.

[0032] In the figure: 1, cabinet; 2, cabinet door; 3, support and placement component; 301, support plate; 302, server body; 303, rotation limit unit; 3031, fixed plate; 3032, rotation limit plate; 3033, shaft; 3034, threading groove; 3035, top groove; 3036, clamping block; 3037, pressure rod; 3038, pressure plate; 304, auxiliary limit unit; 3041, plate groove; 3042, slide plate; 3043, limit block; 3044, clamping block; 3045, push connecting rod; 305, rotation drive unit; 3051, gear; 3052, Rack; 3053, side connecting plate; 3054, middle connecting plate; 3055, limit rotating block; 3056, screw; 3057, screw groove; 3058, turning handle; 306, card-connected positioning unit; 3061, movable groove; 3062, positioning groove; 3063, movable block; 3064, connecting rod; 3065, supporting spring; 3066, movable groove; 3067, movable clamping block; 3068, compression spring; 4, installation of limit assembly; 401, slide groove; 402, top groove; 403, limit rod; 404, reset spring; 405, connecting groove; 406, push plate. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Depend on Figure 1-10 The present invention relates to a BIM and VR-based smart laboratory big data platform, comprising a cabinet 1, a cabinet door 2 is hingedly installed on the front of the cabinet 1, and supporting and placing components 3 are equidistantly installed inside the cabinet 1;

[0035] The supporting and placing component 3 includes a supporting plate 301, a server body 302 for data processing is placed above the supporting plate 301, a rotation limiting unit 303 is provided on the side of the supporting plate 301 close to the front of the cabinet 1 and the side close to the back of the cabinet 1, a rotation driving unit 305 is installed at the bottom of the supporting plate 301, and an installation limiting component 4 is installed between the cabinet 1 and the supporting plate 301;

[0036] The rotation limit unit 303 includes a rotation limit plate 3032 arranged on both sides of the cabinet 1, and the rotation limit plate 3032 is provided with threading grooves 3034 at equal intervals, and the threading grooves 3034 correspond to the sockets of the server body 302 one by one. A clamping block 3036 is arranged inside the threading groove 3034, and the clamping block 3036 is used to clamp and fix the wire harness, an auxiliary limit unit 304 is installed on the rotation limit plate 3032, and a clamping positioning unit 306 is installed on the rotation limit plate 3032. A top groove 3035 is opened at the top of the threading groove 3034, and a pressure rod 3037 is fixed to the top of the clamping block 3036. A pressure plate 3038 is arranged above the rotation limit plate 3032, and the pressure plate 3038 is fixedly connected to the top of the pressure rod 3037 , the bottom of both ends of the rotating limit plate 3032 are fixedly installed with a rotating shaft 3033, and the two ends of the rotating limit plate 3032 are symmetrically provided with a fixed plate 3031, the fixed plate 3031 is rotatably connected to the rotating shaft 3033, and the fixed plate 3031 is fixedly installed on the side wall of the support plate 301, and the threading groove 3034 on the rotating limit plate 3032 corresponds to the position of the socket on the server body 302. When wiring, the cable is passed through the threading groove 3034 and the plug is inserted into the socket, which is convenient for guiding the cable. After pressing the pressing plate 3038 downward, the pressing block 3036 is pushed downward to press and fix the cable, thereby avoiding the cable and the server body 302 from loosening and separating during big data calculation, thereby improving the stability of big data calculation.

[0037] The auxiliary limiting unit 304 includes two plate grooves 3041 symmetrically installed on the rotating limiting plate 3032, a slide plate 3042 is slidably installed inside the plate groove 3041, a limiting block 3043 is installed at one end of the slide plate 3042 away from the server body 302, and a clamping block 3044 is installed at the other end of the slide plate 3042. The limiting block 3043 and the clamping block 3044 are respectively arranged on both sides of the rotating limiting plate 3032, and a pushing connecting rod 3045 is hingedly installed at the top of the clamping block 3044. The other end of the pushing connecting rod 3045 is hingedly installed with the pressure plate 3038 to push The end of the connecting rod 3045 close to the pressure plate 3038 is tilted upward, and two slides 3042 are symmetrically slidably installed on the rotating limit plate 3032. The end of the slide 3042 close to the server body 302 is installed with a clamping block 3044. When the pressure plate 3038 moves downward, the connecting rod 3045 pushes the four clamping blocks 3044 to clamp and fix the server body 302, so that the rotating limit plate 3032 and the server body 302 are relatively stationary, further avoiding the loosening and separation of the cable and the server body 302 when performing big data calculations, thereby improving the stability of big data calculations.

[0038] The card-jointed positioning unit 306 includes a movable groove 3061 provided inside the rotation limit plate 3032, a movable block 3063 is slidably installed inside the movable groove 3061, a connecting rod 3064 is installed at the top of the movable block 3063, the top of the connecting rod 3064 penetrates to the top of the rotation limit plate 3032, the top of the connecting rod 3064 is fixedly connected to the pressure plate 3038, a supporting spring 3065 is fixedly installed at the bottom end of the movable block 3063, the bottom end of the supporting spring 3065 is fixedly connected to the inner bottom wall of the movable groove 3061, and a positioning spring 3065 is provided on the side of the movable groove 3061 away from the server body 302. Slot 3062, the positioning slot 3062 is located below the movable block 3063, a movable slot 3066 is opened inside the movable block 3063, one end of the movable slot 3066 penetrates to the side of the movable block 3063 away from the server body 302, a movable card block 3067 is movably installed inside the movable block 3063, a compression spring 3068 is symmetrically installed on the side of the movable card block 3067 close to the server body 302, one end of the compression spring 3068 is fixedly connected to the inner wall of the movable slot 3066, and the end of the movable card block 3067 contacts the inner wall of the movable slot 3061 away from the server body 302.

[0039] The rotation drive unit 305 includes a gear 3051 coaxially fixedly mounted on the rotating shaft 3033, a rack 3052 is meshedly connected to the side of the gear 3051 away from the support plate 301, a side connecting plate 3053 is fixedly mounted between the two racks 3052 on the same side, a middle connecting plate 3054 is fixedly mounted between the two side connecting plates 3053, the middle connecting plate 3054 is located below the support plate 301, a limited rotation block 3055 is rotatably mounted on the middle connecting plate 3054, a rotation handle 3058 is fixedly mounted on the bottom end of the limited rotation block 3055, a screw rod 3056 is fixedly mounted on the top end of the limited rotation block 3055, and the screw rod 3056 The thread is installed inside the screw groove 3057, and the screw groove 3057 is opened at the bottom end of the support plate 301. The middle connecting plate 3054 moves longitudinally, thereby driving each rack 3052 to move longitudinally, and the rack 3052 is engaged with the gear 3051 on the rotating shaft 3033, thereby driving the rotating limit plate 3032 to rotate with the rotating shaft 3033 as the axis, so that the rotating limit plate 3032 can be rotated to two states: horizontal with the support plate 301 and vertical with the support plate 301. When it is horizontal, it is convenient to take and place the server body 302. When it is vertical, the two rotating limit plates 3032 and the inner walls on both sides of the cabinet 1 limit the server body 302.

[0040] The installation limit assembly 4 includes a slide groove 401 symmetrically opened on the inner walls of both sides of the cabinet 1, and the two ends of the support plate 301 are slidably connected to the slide groove 401. A top groove 402 is opened at the top of the slide groove 401, and a limit rod 403 is slidably installed inside the top groove 402. A return spring 404 is installed at the top of the top groove 402. The top of the return spring 404 is fixedly connected to the inner top wall of the top groove 402. A connecting groove 405 is opened on the side of the return spring 404 close to the front of the cabinet 1, and a push plate 406 is fixedly installed on the limit rod 403, and the push plate 406 is slidably connected to the connecting groove 405.

[0041] Working principle: In the original state, the support plate 301 and the two rotation limit plates 3032 are both in a horizontal state. Then, the turning handle 3058 is turned. Since the screw rod 3056 is threadedly connected with the screw groove 3057, the screw rod 3056 moves upward along the screw groove 3057, thereby driving the middle connecting plate 3054 to move upward together, thereby driving each rack 3052 to move upward, and the rack 3052 is meshed with the gear 3051, so that the rotating shaft 3033 rotates, and the rotation limit plate 3032 is rotated from the horizontal state to the vertical state, so that the inside of the two sides of the cabinet 1 and the two rotation limit plates 3032 limit the server body 302, thereby improving the protection of the server body 302;

[0042] Then, the required cables are passed through each threading groove 3034, and the plugs are inserted into the corresponding jacks of the server body 302. Then, the pressing plate 3038 is pushed downward to push the pressing block 3036 downward so that the pressing block 3036 can press and fix the cables to prevent the cables from loosening and separating from the server body 302, thereby improving the protection of the data processing process. When the pressing plate 3038 moves downward, the sliding plate 3042 is pushed toward the side of the top groove 402 by pushing the connecting rod 3045, so that the four clamping blocks 3036 can be pressed and fixed. 044 clamps and fixes the server body 302, and the rotating limit plate 3032 and the server body 302 are relatively stationary, thereby further preventing the cable from being loosened and separated from the server body 302, and improving the protection of the data processing process. When the pressing plate 3038 moves downward to the corresponding position of the movable block 3063 and the positioning groove 3062, the movable block 3067 moves outward under the elastic force of the compression spring 3068, so that the movable block 3067 is inserted into the positioning groove 3062, thereby fixing the pressing plate 3038;

[0043] When the support plate 301 is disassembled and assembled, the push plate 406 is pushed upward to push the limit rod 403 completely into the top groove 402, and then the support plate 301 is placed into or taken out of the cabinet 1 along the slide groove 401, and the limit rod 403 and the end inner wall of the slide groove 401 limit the two ends of the support plate 301.

[0044] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A BIM and VR-based smart laboratory big data platform, comprising a cabinet (1), characterized in that: The cabinet (1) is hingedly provided with a cabinet door (2) on the front side, and supporting and placing components (3) are equidistantly provided inside the cabinet (1); The supporting and placing component (3) comprises a supporting plate (301), a server body (302) for data processing is placed above the supporting plate (301), a rotation limiting unit (303) is arranged on the side of the supporting plate (301) close to the front of the cabinet (1) and the side of the supporting plate (301) close to the back of the cabinet (1), a rotation driving unit (305) is installed at the bottom end of the supporting plate (301), and an installation limiting component (4) is installed between the cabinet (1) and the supporting plate (301); The rotation limiting unit (303) comprises a rotation limiting plate (3032) arranged on both sides of the cabinet (1); wire threading grooves (3034) are equidistantly provided on the rotation limiting plate (3032); the wire threading grooves (3034) correspond one to one with the sockets of the server body (302); a clamping block (3036) is arranged inside the wire threading groove (3034); the clamping block (3036) is used to clamp and fix the wire harness; an auxiliary limiting unit (304) is installed on the rotation limiting plate (3032); and a snap-on positioning unit (306) is installed on the rotation limiting plate (3032).

2. According to the BIM and VR-based smart laboratory big data platform of claim 1, it is characterized by: The top of the threading groove (3034) is provided with a top groove (3035), the top of the pressing block (3036) is fixed with a pressure rod (3037), a pressure plate (3038) is arranged above the rotation limit plate (3032), the pressure plate (3038) is fixedly connected to the top of the pressure rod (3037), the bottom of both ends of the rotation limit plate (3032) are fixedly installed with a rotating shaft (3033), the two ends of the rotation limit plate (3032) are symmetrically provided with a fixed plate (3031), the fixed plate (3031) is rotatably connected to the rotating shaft (3033), and the fixed plate (3031) is fixedly installed on the side wall of the support plate (301).

3. According to the BIM and VR-based smart laboratory big data platform of claim 1, it is characterized by: The auxiliary limiting unit (304) comprises two plate grooves (3041) symmetrically installed and opened on the rotating limiting plate (3032); a slide plate (3042) is slidably installed inside the plate groove (3041); a limiting block (3043) is installed at one end of the slide plate (3042) away from the server body (302); a clamping block (3044) is installed at the other end of the slide plate (3042); the limiting block (3043) and the clamping block (3044) are respectively arranged on both sides of the rotating limiting plate (3032).

4. The smart laboratory big data platform based on BIM and VR according to claim 3 is characterized by: A push link (3045) is hingedly mounted on the top end of the clamping block (3044), and the other end of the push link (3045) is hingedly mounted on the pressure plate (3038), and one end of the push link (3045) close to the pressure plate (3038) is tilted upward.

5. The smart laboratory big data platform based on BIM and VR according to claim 1 is characterized by: The snap-fit ​​positioning unit (306) comprises a movable groove (3061) provided inside the rotation limiting plate (3032), a movable block (3063) being slidably installed inside the movable groove (3061), a connecting rod (3064) being installed at the top end of the movable block (3063), the top end of the connecting rod (3064) passing through the top end of the rotation limiting plate (3032), the top end of the connecting rod (3064) being fixedly connected to the pressing plate (3038), a supporting spring (3065) being fixedly installed at the bottom end of the movable block (3063), and the bottom end of the supporting spring (3065) being fixedly connected to the inner bottom wall of the movable groove (3061).

6. The smart laboratory big data platform based on BIM and VR according to claim 5 is characterized by: A positioning groove (3062) is provided on a side of the movable groove (3061) away from the server body (302), and the positioning groove (3062) is located below the movable block (3063). A movable groove (3066) is provided inside the movable block (3063), and one end of the movable groove (3066) penetrates to the side of the movable block (3063) away from the server body (302). A movable card block (3067) is movably installed inside the movable block (3063), and a compression spring (3068) is symmetrically installed on a side of the movable card block (3067) close to the server body (302), one end of the compression spring (3068) is fixedly connected to the inner wall of the movable groove (3066), and the end of the movable card block (3067) contacts the inner wall of the side of the movable groove (3061) away from the server body (302).

7. The smart laboratory big data platform based on BIM and VR according to claim 1 is characterized by: The rotation drive unit (305) comprises a gear (3051) coaxially fixedly mounted on the rotating shaft (3033); a rack (3052) is meshingly connected to the side of the gear (3051) away from the support plate (301); a side connecting plate (3053) is fixedly mounted between two racks (3052) on the same side; a middle connecting plate (3054) is fixedly mounted between the two side connecting plates (3053); and the middle connecting plate (3054) is located below the support plate (301).

8. The smart laboratory big data platform based on BIM and VR according to claim 7 is characterized by: A limit rotating block (3055) is rotatably mounted on the middle connecting plate (3054), a rotating handle (3058) is fixedly mounted on the bottom end of the limit rotating block (3055), a screw rod (3056) is fixedly mounted on the top end of the limit rotating block (3055), the screw rod (3056) is threadedly mounted inside a screw groove (3057), and the screw groove (3057) is opened at the bottom end of the supporting plate (301).

9. The smart laboratory big data platform based on BIM and VR according to claim 1, characterized in that: The installation limit assembly (4) comprises a slide groove (401) symmetrically arranged on the inner walls of both sides of the cabinet (1), the two ends of the support plate (301) are slidably connected to the slide groove (401), a top groove (402) is arranged at the top of the slide groove (401), a limit rod (403) is slidably installed inside the top groove (402), a return spring (404) is installed at the top of the top groove (402), the top of the return spring (404) is fixedly connected to the inner top wall of the top groove (402), a connecting groove (405) is arranged on the side of the return spring (404) close to the front of the cabinet (1), a push plate (406) is fixedly installed on the limit rod (403), and the push plate (406) is slidably connected to the connecting groove (405).

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