Explosion-proof box door lifting structure and explosion-proof box

Abstract

The utility model discloses an explosion-proof box door lifting structure and an explosion-proof box, and relates to the technical field of explosion-proof under mines, the explosion-proof box door lifting structure comprises a box body and a box door which are connected, at least two rotating assemblies and a lifting assembly used for lifting the box door are arranged at the joint of the box body and the box door, and each rotating assembly comprises a supporting block fixedly connected with the box body. One side of the supporting block is fixedly connected with a shaft sleeve, a rotating shaft is arranged in the shaft sleeve and connected with the box door through a connecting block, and when the box door is opened to be larger than the preset angle, the box door stays at the first preset height. When the box door is closed to be smaller than the preset angle, the connecting block is separated from the supporting block, and the box door can descend to the second preset height relative to the box body. The beneficial effects of the utility model are that the supporting block and the shaft sleeve in the rotating assembly are designed into an integrated structure, and the distance between the rotating shaft and the edge of the box body is greatly reduced, so that the opening and closing seam between the box door and the box body is reduced, the occupied space of the box door in the opening state is reduced, and the operation of workers is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof technology in underground mines, and in particular to the explosion-proof box door lifting structure and the explosion-proof box. Background Technology

[0002] Explosion-proof boxes are electrical equipment used in environments containing methane and coal dust, such as coal mines. Their size is crucial; a smaller size not only facilitates the efficient use of underground working space and reduces interference with other work processes and equipment placement, but also makes installation and transportation more flexible and convenient. Chinese design patent CN308732829S discloses a mine-use explosion-proof vacuum feeder switch, which uses a cam and pull rod structure for opening and closing the door. However, this method results in a large opening and closing gap because the pivot is far from the edge of the box, making it inconvenient to use in the space-constrained environment of mines. Furthermore, the large opening and closing gap can easily trap cables inside the box when closing, increasing the operator's workload and affecting work efficiency. Utility Model Content

[0003] The purpose of this section is to outline some aspects of the embodiments and briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be used to limit the scope of this invention.

[0004] In view of the problems existing in the above or existing technologies, this utility model is proposed, which can solve the technical problem that the opening and closing gap is large due to the long distance of the pivot when the explosion-proof box door is opened and closed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an explosion-proof box door lifting structure, which is used to connect the box body and the box door. At least two rotating components and a lifting component for lifting the box door are provided at the connection between the box body and the box door. The rotating component includes a support block fixedly connected to the box body. A bushing is fixedly connected to one side of the support block. A rotating shaft is provided inside the bushing. The rotating shaft is connected to the box door through a connecting block. When the box door is opened relative to the box body to an angle greater than a preset angle, the connecting block and the support block cooperate to keep the box door at a preset height one relative to the box body. When the box door is closed relative to the box body to an angle less than a preset angle, the connecting block disengages from the support block and allows the box door to descend relative to the box body to a preset height two, where the preset height one is higher than the preset height two.

[0006] As a preferred embodiment of the explosion-proof box described in this utility model, the lifting assembly includes a rack fixedly connected to the box body, and the box door is provided with a connecting seat corresponding to the position of the rack. A gear is provided in the connecting seat. When the box door is closed to a position less than a preset angle, the gear meshes with the rack. When the box door is opened to a position greater than the preset angle, the gear disengages from the rack.

[0007] As a preferred embodiment of the explosion-proof box described in this utility model, the connecting seat is provided with an operating end for rotating the gear on one side.

[0008] In a preferred embodiment of the explosion-proof box described in this utility model, the distance between both ends of the lifting assembly and the rotating assembly is greater than the distance the rotating shaft moves up and down.

[0009] As a preferred embodiment of the explosion-proof box described in this utility model, the top of the box door is provided with at least two U-shaped blocks that can engage with the box body when the box door is in the closed state.

[0010] As a preferred embodiment of the explosion-proof box described in this utility model, at least two locking blocks are provided on the side of the box door, and a locking seat that cooperates with the locking blocks is provided on the side of the box body. When the box door is in the closed state, the locking blocks and the locking seat are engaged.

[0011] As a preferred embodiment of the explosion-proof box described in this utility model, a handle is provided on one side of the box door to assist in lifting the box door.

[0012] As a preferred embodiment of the explosion-proof box described in this utility model, the side of the box body is provided with a connecting pin for locking the locking block, and the connecting pin is fixed by a rotating rod.

[0013] As a preferred embodiment of the explosion-proof box described in this utility model, the explosion-proof box uses an explosion-proof box door lifting structure.

[0014] The beneficial effects of this utility model are as follows: by designing the support block and bushing in the rotating assembly as an integral structure, the distance between the rotating shaft and the edge of the box is greatly reduced, thereby reducing the opening and closing gap between the box door and the box body, and further reducing the space occupied by the box door in the open state, which is convenient for workers to operate; by setting up a lifting assembly, the box door can be easily lifted, thereby allowing the U-shaped block and the locking block to disengage and open the box door. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the following description of the embodiments will be briefly introduced. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort or labor. Wherein:

[0016] Figure 1 This is a first isometric schematic diagram of the present invention;

[0017] Figure 2 This is a second isometric schematic diagram of the present invention;

[0018] Figure 3 This is a partially enlarged schematic diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the box door in a semi-open state according to this utility model;

[0020] Figure 5 This is a schematic diagram of the box door of this utility model in the fully open state.

[0021] The meanings of the reference numerals in the figure are as follows: 1. Box body; 2. Box door; 3. Handle; 4. Rotating component; 5. Lifting component; 6. U-shaped block; 7. Locking block; 8. Locking seat; 9. Opening and closing seam; 401. Support block; 402. Bushing; 403. Rotating shaft; 404. Connecting block; 501. Rack; 502. Gear; 503. Connecting seat; 504. Operating end. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. The term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0024] Example 1

[0025] Reference Figures 1-5This is the first specific embodiment of the present invention. This embodiment provides an explosion-proof box door lifting structure, which is used to connect the box body 1 and the box door 2. At least two rotating components 4 and a lifting component 5 for lifting the box door 2 are provided at the connection between the box body 1 and the box door 2. The rotating component 4 includes a support block 401 fixedly connected to the box body 1. A bushing 402 is fixedly connected to one side of the support block 401. A rotating shaft 403 is provided inside the bushing 402. The rotating shaft 403 is connected to the box door 2 through a connecting block 404. When the box door 2 is opened relative to the box body 1 to a greater than a preset angle, the connecting block 404 cooperates with the support block 401, so that the box door 2 is opened relative to the box body 1. The box body 1 remains at a preset height one; when the box door 2 is closed relative to the box body 1 to a less than preset angle, the connecting block 404 disengages from the support block 401, and the box door 2 can descend relative to the box body 1 to a preset height two, where the preset height one is higher than the preset height two; the lifting assembly 5 includes a rack 501 fixedly connected to the box body 1, and a connecting seat 503 corresponding to the position of the rack 501 is provided on the box door 2. A gear 502 is provided inside the connecting seat 503. When the box door 2 is closed to a less than preset angle, the gear 502 meshes with the rack 501. When the box door 2 is opened to a greater than preset angle, the gear 502 disengages from the rack 501.

[0026] like Figure 3 The bushing 402 and the support block 401 are integrally formed and fixed to the edge of the housing 1 in a convex shape. In addition, the bushing 402 is designed to be small in size, which greatly reduces the distance from the central axis of the bushing 402 to the edge of the housing 1. When the housing door 2 is opened, the size of the opening and closing gap 9 between the housing door 2 and the housing 1 is reduced. This not only reduces the space occupied by the housing door 2 when it is open, but also avoids the situation where the cable is easily pinched when the housing door 2 is closed if the opening and closing gap 9 is too large. The gear 502 can rotate around the rotating shaft 403 as the central axis to achieve engagement or disengagement with the rack 501. The rack 501 and the gear 502 have a certain meshing clearance to prevent the gear 502 from getting stuck when rotating.

[0027] The connecting seat 503 has an operating end 504 for rotating the gear 502 on one side; the distance between both ends of the lifting component 5 and the rotating component 4 is greater than the vertical movement distance of the rotating shaft 403; the top of the door 2 has at least two U-shaped blocks 6 that can engage with the box body 1 when the door 2 is closed; the side of the door 2 has at least two locking blocks 7, and the side of the box body 1 has a locking seat 8 that cooperates with the locking blocks 7. When the door 2 is closed, the locking blocks 7 engage with the locking seat 8; the side of the door 2 has a handle 3 that can assist in lifting the door 2; the side of the box body 1 has a connecting pin for locking the locking blocks 7, and the connecting pin is fixed by a rotating rod.

[0028] When the height of the door 2 needs to be adjusted, use a tool to rotate the control end 504. When opening the door 2, the handle 3 can be lifted to reduce the frictional resistance between the rack 501 and the gear 502. When closing the door 2, the control end 504 can be rotated slightly by a tool or manually to assist the meshing of the rack 501 and the gear 502. After the door 2 is lifted, the upper part of the connecting block 404 moves above the support block 401. At this time, rotate the door 2 so that the upper part of the connecting block 404 rests on the support block 401 to support the door 2. When the door 2 is closed, the U-shaped block 6 is locked at the edge of the box body 1, and the bottom of the locking block 7 is locked with the top of the locking seat 8 for greater stability.

[0029] Example 2

[0030] Reference Figures 1-5 This is the second specific embodiment of the present invention, which provides an explosion-proof box that uses an explosion-proof box door lifting structure.

[0031] The explosion-proof box uses the explosion-proof box door lifting structure of this application, which can greatly reduce the opening and closing gap 9. The smaller opening and closing gap 9 can reduce the space occupied by the explosion-proof box and avoid the cable being pinched by the opening and closing gap 9, thus preventing cable damage. It also makes it easier for workers to debug the equipment inside the explosion-proof box and improves work efficiency.

[0032] Working principle: When opening the door 2, hold the handle 3 with one hand and use a tool to rotate the operating end 504 with the other hand. This will drive the gear 502 to rotate and move upward along the rack 501, thereby moving the door 2 upward. When the connecting block 404 is above the support block 401, the U-shaped block 6 and the locking block 7 will just disengage from the box body 1 and the locking seat 8 respectively. Then, rotate the door 2. The connecting block 404 will rotate around the bushing 402 as the central axis. After rotating to a certain angle, the connecting block 404 will rest on the support block 401 to achieve support. When closing the door 2, hold the handle 3 with one hand and rotate the operating end 504 with the other hand to assist the gear 502 in meshing with the rack 501. After the door 2 is completely closed, rotate the operating end 504 with a tool to move the door 2 downward. Finally, the door is stabilized by the action of the U-shaped block 6 and the locking block 7.

[0033] The advantages of this application over the prior art are as follows: by designing the support block 401 and the bushing 402 in the rotating assembly 4 as an integral structure, the distance between the rotating shaft 403 and the edge of the box 1 is greatly reduced, thereby reducing the opening and closing gap 9 between the box door 2 and the box 1, and further reducing the space occupied by the box door 2 in the open state, which is convenient for workers to operate; by setting the lifting assembly 5, the box door 2 can be easily lifted, thereby disengaging the U-shaped block 6 and the locking block 7 to open the box door 2.

[0034] Importantly, although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible without substantially departing from the subject matter described in this application; for example, variations in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(temperature, pressure, etc.), installation arrangements, use of materials, color, orientation, etc.; for example, an element shown as integrally formed may be composed of multiple parts or elements, and the position of the elements may be inverted or otherwise altered. Therefore, all such modifications should be included within the scope of this invention, and any "device plus function" clause in the claims should cover the structure described herein that performs the function. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of this invention.

Claims

1. An explosion-proof box door lifting structure, characterized in that: For connecting the box body (1) and the box door (2), the connection between the box body (1) and the box door (2) is provided with at least two rotating components (4) and a lifting component (5) for lifting the box door (2). The rotating component (4) includes a support block (401) fixedly connected to the box body (1). A bushing (402) is fixedly connected to one side of the support block (401). A rotating shaft (403) is provided inside the bushing (402). The rotating shaft (403) is connected to the box door (2) through a connecting block (404). 2) Connection: When the door (2) is opened to a greater than preset angle relative to the body (1), the connecting block (404) cooperates with the support block (401) to keep the door (2) at a preset height one relative to the body (1); when the door (2) is closed to a less than preset angle relative to the body (1), the connecting block (404) disengages from the support block (401) and allows the door (2) to descend to a preset height two relative to the body (1), where the preset height one is higher than the preset height two.

2. The explosion-proof box door lifting structure as described in claim 1, characterized in that: The lifting assembly (5) includes a rack (501) fixedly connected to the housing (1). The housing door (2) is provided with a connecting seat (503) corresponding to the position of the rack (501). The connecting seat (503) is provided with a gear (502). When the housing door (2) is closed to a position less than a preset angle, the gear (502) meshes with the rack (501). When the housing door (2) is opened to a position greater than the preset angle, the gear (502) disengages from the rack (501).

3. The explosion-proof box door lifting structure as described in claim 2, characterized in that: The connecting seat (503) has an operating end (504) on one side for rotating the gear (502).

4. The explosion-proof box door lifting structure as described in claim 1 or 3, characterized in that: The distances between both ends of the lifting component (5) and the rotating component (4) are greater than the vertical movement distance of the rotating shaft (403).

5. The explosion-proof box door lifting structure as described in claim 4, characterized in that: The top of the door (2) is provided with at least two U-shaped blocks (6) that can engage with the box body (1) when the door (2) is closed.

6. The explosion-proof box door lifting structure as described in claim 5, characterized in that: The side of the door (2) is provided with at least two locking blocks (7), and the side of the box body (1) is provided with a locking seat (8) that cooperates with the locking blocks (7). When the door (2) is closed, the locking blocks (7) and the locking seat (8) engage.

7. The explosion-proof box door lifting structure as described in claim 6, characterized in that: The box door (2) is provided with a handle (3) on one side to help lift the box door (2).

8. The explosion-proof box door lifting structure as described in claim 6, characterized in that: The side of the housing (1) is provided with a connecting pin for locking the card block (7), and the connecting pin is fixed by a rotating rod.

9. An explosion-proof box, characterized in that: It uses the explosion-proof box door lifting structure as described in any one of claims 1-8.

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