Self-weight return type self-closing sliding door for mine

Abstract

The utility model provides a self-weight return type self-closing sliding door for a mine. The self-weight return type self-closing sliding door comprises a bottom frame and a top frame. The two ends of the bottom frame are connected with the two ends of the top frame through the side frames correspondingly to define a square frame structure. The fixed door is arranged between the bottom frame and the top frame; a personnel channel is formed between the two fixed doors; a door body formed by connecting the two movable doors completely covers the personnel channel; the top end of the movable door is in sliding connection with a first sliding rail arranged in the top frame. The bottom end of the movable door is in sliding connection with a second sliding rail arranged in the bottom frame; the horizontal height of the first sliding rail is sequentially increased from the center position of the first sliding rail to the two ends. According to the balance type self-closing sliding door for the mine, by designing the horizontal height of the first sliding rail, the movable door moving along the first sliding rail can automatically return to the closing position under the action of gravity after being manually opened, operation is convenient, and the safety of mine operation can be guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sliding doors, and particularly relates to a self-weight back type self-closing sliding door for a mine. BACKGROUND

[0002] In a coal mine ventilation system, air is usually extracted through the west and north wings, and the main shaft and auxiliary shaft are used as air inlet channels to ensure the cleanliness and freshness of the air flow in the mine. In order to maintain the cleanliness and safety of the environment in the mine, a balanced air door is installed in the material inlet and outlet channel of the upper shaft auxiliary shaft to regulate the air flow, and the pedestrian channel of the upper shaft auxiliary shaft is designed as a normally closed type to maintain the negative pressure environment around the upper shaft auxiliary shaft. However, when an accident such as a fire occurs near the shaft, the ventilation system of the coal mine will quickly respond to switch the air extraction mode of the two wings of the mine to the air compression mode. This operation is to prevent the fire and harmful gases from entering the mine and to protect the safety of the personnel working in the mine. However, in the air compression mode, the environment around the auxiliary shaft becomes a positive pressure state, which poses a challenge to the traditional swing door.

[0003] The existing mine swing door is not convenient for automatic closing operation when an accident occurs. Due to the influence of the air inlet of the upper shaft auxiliary shaft, the air flow between the waiting room and the cage riding room is usually from the waiting room to the auxiliary shaft shaft, which makes it difficult for the outward opening swing door to open, and the door closes inwardly due to the air pressure, which poses a safety hazard to personnel. In the event of an emergency such as a fire in the mine, the return operation of the two wings of the mine will make the environment around the auxiliary shaft a positive pressure environment. At this time, the existing swing door cannot be normally closed due to the positive pressure, which may cause the fire and harmful gases to spread to the waiting room through the swing door that is not closed, thereby endangering the safety of the mine lamp room and other areas. Considering that the waiting hall to the cage riding room of the upper shaft auxiliary shaft of the coal mine is the only channel for workers to go up and down the shaft, the daily traffic volume is large, and the daily in and out of the shaft flow is as high as about 2000 person times, and the daily door opening and closing times are more than 1000 times. Therefore, it is an urgent need to design a mine door that can work stably in both negative and positive pressure environments and is easy to automatically close. CONTENT OF THE UTILITY MODEL

[0004] The present application provides a self-weight back type self-closing sliding door for a mine to solve the problem that the existing mine swing door is not convenient for automatic closing operation when an accident occurs.

[0005] The present application provides a self-weight back type self-closing sliding door for a mine, comprising:

[0006] The bottom frame is buried underground, and the upper surface is flush with the ground surface;

[0007] A top frame is arranged above the bottom frame and laid in the same direction as the bottom frame; two ends of the bottom frame are connected to two ends of the top frame through side frames to form a square frame structure;

[0008] A fixed door is arranged between the bottom frame and the top frame; the fixed door is provided with two doors located at one end above the bottom frame; three edges of the fixed door are fixedly connected to the bottom frame, the top frame and the side frame; a personnel passage is formed between the two doors of the fixed door;

[0009] A movable door is provided with two doors, and the two doors of the movable door are connected to form a door body which completely covers the personnel passage; a top end of the movable door is slidably connected to a first sliding rail arranged in the top frame; a bottom end of the movable door is slidably connected to a second sliding rail arranged in the bottom frame; the horizontal height of the first sliding rail increases from the central position of the first sliding rail to the two end positions.

[0010] In some embodiments, further comprising:

[0011] A sliding rail adjusting mechanism is arranged at two ends of the top frame;

[0012] The central position of the first sliding rail is hinged to the top frame, and the end of the first sliding rail is connected to the sliding rail adjusting mechanism to change the laying angle of the first sliding rail under the action of the sliding rail adjusting mechanism.

[0013] In some embodiments, the sliding rail adjusting mechanism comprises:

[0014] A threaded rod; a middle part of the threaded rod is threadedly connected to the top frame, one end of the threaded rod is arranged below the end of the first sliding rail; the other end of the threaded rod is connected to an operating rod.

[0015] In some embodiments, the movable door is provided with a recoil assembly on the opposite side; the recoil assembly comprises:

[0016] A housing arranged inside the movable door; the housing is in communication with the outside of the movable door through a through hole;

[0017] A buffer; one end of the buffer extends out of the through hole, and the other end is connected to a connecting plate; the connecting plate is connected to the housing through a spring.

[0018] In some embodiments, the bottom frame is provided with adjacent first and second groove bodies, the fixed door is arranged in the first groove body, and the second sliding rail is arranged in the second groove body.

[0019] In some embodiments, the movable door is provided with at least one first pulley on the side close to the top frame; the first pulley is in rolling contact with the first sliding rail.

[0020] In some embodiments, the movable door is provided with at least one second pulley on the side near the top frame; the second pulley is in rolling contact with the first slide rail, and the axes of the first pulley and the second pulley are perpendicular to each other.

[0021] In some embodiments, the movable door is provided with a plurality of third pulleys on the side near the bottom frame, and the plurality of third pulleys are arranged at equal intervals on the bottom surface of the movable door; the axis of the third pulley is parallel to the axis of the first pulley or the second pulley.

[0022] In some embodiments, the upper part of the sliding door is fitted with fire-resistant glass.

[0023] In some embodiments, the sliding door is also fitted with a recessed door handle, which is located below the fireproof glass.

[0024] The mine balanced self-closing sliding door provided in this application embodiment, by designing the horizontal height of the first slide rail, allows the sliding door 4, which moves along the first slide rail 21, to automatically return to the closed position under the action of gravity after being manually opened, which not only facilitates operation but also ensures the safety of mine operations. Attached Figure Description

[0025] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A perspective view of a gravity-operated self-closing sliding door for use in mines, provided for this application;

[0027] Figure 2 A partial front view of a gravity-operated self-closing sliding door for mines provided in this application;

[0028] Figure 3 A partial bottom view of a self-closing sliding door for mines provided in this application;

[0029] Figure 4 A partial side view of a gravity-operated self-closing sliding door for mines provided in this application;

[0030] Figure 5 A schematic diagram of the backflush assembly in a self-closing sliding door for mines provided in this application;

[0031] Figure 6 This application provides a structural schematic diagram of the sliding door in a self-closing, gravity-fed sliding door for use in mines.

[0032] FIG. 1 illustrates a perspective view of the self-weight return type self-closing sliding door of the present application;

[0033] Wherein, 1 - bottom frame; 2 - top frame; 21 - first sliding rail; 22 - second sliding rail; 3 - fixed door; 4 - moving door; 41 - first pulley; 42 - second pulley; 43 - third pulley; 51 - threaded rod; 52 - operating rod; 6 - recoil assembly; 61 - housing; 62 - through hole; 63 - buffer; 64 - connecting plate; 65 - spring; 7 - concave door handle; 8 - fireproof glass; 9 - frame. DETAILED DESCRIPTION

[0034] The embodiments will be described in detail below with reference to examples thereof as illustrated in the accompanying drawings. In the following description, same numbers in different drawings represent same or similar elements unless otherwise represented. The embodiments described in the following examples do not represent all the implementations consistent with the present application. They are merely examples consistent with some aspects of the present application as detailed in the claims.

[0035] Reference Figures 1-4 In one feasible embodiment of the present application, the present application provides a self-weight return type self-closing sliding door for mine, comprising:

[0036] The bottom frame 1 is buried underground, and the upper surface is flush with the ground surface. The bottom frame provides stable bottom support for the overall structure of the door. In addition, the bottom frame 1 is arranged underground to prevent damage to the sliding rails and other components by external factors, affecting the movement of the moving door 4, and so on.

[0037] The top frame 2 is arranged above the bottom frame 1 and laid in the same direction as the bottom frame 1. The two ends of the bottom frame 1 are connected to the two ends of the top frame 2 through the frames 9 to form a square frame structure. In this embodiment, the specific shape of the top frame 2 should be fitted to the top of the mine, and is not limited to the square frame structure as shown in the drawings of the present application. It can be understood that the frames 9 should also be fitted to the outer wall of the mine. It should be considered that the outer edge of the square frame structure should be fitted to the inner wall of the mine to ensure the sealing effect when the sliding door is closed.

[0038] The fixed door 3 is arranged between the bottom frame 1 and the top frame 2. The fixed door 3 is provided with two doors, which are respectively located at one end above the bottom frame 1. Three edges of the fixed door 3 are fixedly connected to the bottom frame 1, the top frame 2, and the frame 9, respectively. A personnel passage is formed between the two fixed doors 3. In this embodiment, the distance between the fixed doors 3 determines the size of the personnel passage, which in turn affects the number of people who can pass through the door. This parameter can be set according to actual needs.

[0039] The mobile door 4 is provided with two doors, and the door body formed by the two doors completely covers the personnel passage; the top end of the mobile door 4 is in sliding connection with the first sliding rail 21 arranged in the top frame 2; the bottom end of the mobile door 4 is in sliding connection with the second sliding rail 22 arranged in the bottom frame 1; the horizontal height of the first sliding rail 21 gradually increases from the central position to the two end positions. In the embodiment, the cooperation relationship between the mobile door 4 and the fixed door 3 can be understood as the relationship of a common sliding door, that is, the surface on which the mobile door 4 moves and the surface on which the fixed door 3 is located are in parallel and adjacent relationship, when the mobile door 4 moves to overlap the fixed door 3, the mobile door 4 and the fixed door 3 are in close contact but not in contact, when the mobile door 4 moves to cover the personnel passage, at least part of the mobile door 4 overlaps and contacts the fixed door 3 to form a closed effect, therefore, when designing, the positions of the first sliding rail 21 and the second sliding rail 22 are designed correspondingly to ensure the positional relationship between the mobile door 4 and the fixed door 3.

[0040] In the embodiment, the core of realizing automatic closing of the door body lies in the structure of the first sliding rail 21, since the top end of the mobile door 4 is in sliding connection with the first sliding rail 21, when there is a height difference in the horizontal height of the first sliding rail 21, under the influence of gravity, the mobile door 4 can be actively moved from the position with high horizontal height to the position with low horizontal height. When the mobile door 4 is opened by external force, it moves from the center to the two ends along the first sliding rail, the horizontal height of the first sliding rail 21 is constantly increased, and at the same time, the mobile door 4 is affected by the force in the opposite direction due to gravity, when the external force is removed, the mobile door 4 will be automatically moved from the two ends of the first sliding rail to the center direction due to the influence of gravity, to achieve the effect of automatic closing.

[0041] It can be known from the above scheme that the balanced self-closing sliding door for mine provided in the embodiment of the present application can make the mobile door 4 moved along the first sliding rail 21 to automatically return to the closed position under the action of gravity after being opened by human, that is, it is convenient to operate, and the safety of mine operation can be ensured.

[0042] Further, considering that if the inclination of the first sliding rail 21 is too large, the kinetic energy of the mobile door 4 when returning may be large, which is easy to cause the accident of pinching people, and if the inclination of the first sliding rail 21 is too small, the mobile door 4 may return slowly, which is not conducive to rapid closing, therefore, as shown in the figure, in some embodiments, the balanced self-closing sliding door for mine of the present application can further include: Figure 2

[0043] a sliding rail adjusting mechanism, the sliding rail adjusting mechanism is located at the two ends of the top frame 2;

[0044] ​The center position of the first sliding rail 21 is hinged to the top frame 2, and the end of the first sliding rail 21 is connected to the sliding rail adjusting mechanism to change the laying angle of the first sliding rail 21 under the action of the sliding rail adjusting mechanism.

[0045] In this embodiment, the sliding rail adjusting mechanism can be used to adjust the laying angle of the first sliding rail 21, that is, to adjust the height difference between the two ends of the first sliding rail 21 relative to the center position. The greater the angle, the greater the height difference, and the smaller the angle, the smaller the height difference. In actual application, the height difference can be adjusted according to different needs. For example, if the user thinks that the moving door returns slowly, the height difference can be adjusted by increasing the height difference. For example, when the moving door is used for a long time, due to equipment wear, corrosion and other problems, the moving door moves more and more slowly. At this time, the return speed of the moving door can be increased by increasing the height difference.

[0046] The specific structure form of the sliding rail adjusting mechanism is not limited to one, for example, in Figure 2 The sliding rail adjusting mechanism shown in the embodiment comprises:

[0047] A threaded rod 51; the middle part of the threaded rod 51 is threadedly connected to the top frame 2, and one end of the threaded rod 51 abuts below the end of the first sliding rail 21; the other end of the threaded rod 51 is connected to an operating rod 52.

[0048] In specific use, the operator can manually rotate the operating rod 52 to adjust the relative position of the threaded rod 51 and the top frame 2. When the threaded rod 51 rotates upward, the end of the first sliding rail 21 abutting the threaded rod 51 moves upward, thereby increasing the angle of the first sliding rail 21 (the height difference between the center and the top), achieving the purpose of adjusting the first sliding rail 21. Conversely, the opposite effect can also be achieved by rotating the threaded rod 51 in the opposite direction.

[0049] In some feasible embodiments, the opposite side of the moving door 4 is provided with a recoil assembly 6; the recoil assembly 6 comprises:

[0050] A housing 61 provided inside the moving door 4; the housing 61 communicates with the outside of the moving door 4 through a through hole 62;

[0051] A buffer 63; one end of the buffer 63 protrudes out of the through hole 62, and the other end is connected with a connecting plate 64; the connecting plate 64 is connected to the housing 61 through a spring 65.

[0052] In order to further improve the functionality and safety of the balanced self-closing sliding door for mine, the opposite side of the moving door 4 can be equipped with a recoil assembly 6. This recoil assembly is designed to provide a buffer effect when the door is closed, reducing the violent closing of the door body caused by wind pressure or other external forces, thereby preventing the risk of possible harm to personnel.

[0053] The specific structure of the recoil assembly 6 includes a housing 61 installed inside the movable door 4. This housing can communicate with the outside of the movable door through one or more through holes 62, providing the necessary space for the buffer 63.

[0054] The buffer 63, usually made of flexible material, has one end protruding through the through hole 62 to facilitate first contact with the door frame when the door is closing, thereby serving as a buffer. The other end of the buffer is connected to a connecting plate 64, which is connected to the housing 61 by a spring 65. This design allows the spring to provide a counteracting force when the buffer is compressed during door closing, thereby slowing down the closing speed of the door and reducing the impact force when the door is closed.

[0055] In addition, the spring constant of the spring 65 can be adjusted according to actual needs to adapt to the closing force of the door in different environments, ensuring that the door body can be effectively closed without damaging the door structure or causing safety hazards due to excessive impact.

[0056] By integrating the recoil assembly on the movable door, it can provide buffering when closing, increase the service life of the door, and protect the waiting personnel from accidental injury, thereby improving the overall safety and operational efficiency of the mine.

[0057] Further, in some feasible embodiments, the bottom frame 1 is provided with adjacent first and second groove bodies, and the fixed door 3 is arranged in the first groove body; the second sliding rail 22 is arranged in the second groove body. It should be noted that the first and second groove bodies are relative concepts, and in actual application, the first groove body can be the groove body located near the outdoor side of the sliding door, and the second groove body can be the groove body located near the indoor side of the sliding door, or vice versa, which is not limited herein.

[0058] Further, the contact form of the movable door 4 with the first sliding rail 21 is not limited to one, for example, in some feasible embodiments, the movable door 4 is provided with at least one first pulley 41 on the side close to the top frame 2; the first pulley 41 is in rolling contact with the first sliding rail 21. Through the contact of the pulley and the sliding rail, the movement of the movable door can be more smooth and smooth.

[0059] As Figure 6As shown, in some feasible embodiments, the contact surface between the sliding door 4 and the first slide rail 21 is not only in a top-to-bottom contact manner. The sliding door 4 may also be provided with at least one second pulley 42 on the side near the top frame 2. The second pulley 42 makes rolling contact with the first slide rail 21, and the axes of the first pulley 41 and the second pulley 42 are perpendicular to each other. In this embodiment, the second pulley 42 is equivalent to making side contact with the first slide rail 21, which ensures that the sliding door 4 does not move back and forth in a direction perpendicular to the direction of movement during the movement, thus ensuring the stability of the movement process.

[0060] In the above embodiments, the number of the first pulley 41 and the second pulley 42 is not limited to one. In addition to the number shown in the figure, it can be set to any other number. It should be considered that the more the number is set, the more beneficial it is to improve the stability of the moving door. However, it will also increase the complexity of the equipment and the complexity of the installation. Therefore, the number of pulleys needs to be set reasonably according to the requirements.

[0061] Depend on Figure 6 It can be seen that, in some feasible embodiments, the sliding door 4 is provided with a plurality of third pulleys 43 on the side near the bottom frame 1, and the plurality of third pulleys 43 are equidistantly arranged on the bottom surface of the sliding door; the axis of the third pulley 43 is parallel to the axis of the first pulley 41 or the second pulley 42. The third pulley 43 can contact the bottom surface of the second slide rail 22 or its side surface, in Figure 6 and Figure 4 The image shows the situation of rolling contact with the side.

[0062] Additionally, it should be noted that in this embodiment, regardless of the number or position of the pulleys, during the movement of the sliding door 4, the pulleys should always be in contact with the first and second slide rails to provide guidance. The specific internal structure of the first and second slide rails should not affect the movement of the pulleys.

[0063] In some feasible embodiments, a fire-resistant glass 8 is embedded in the upper part of the sliding door 4. The fire-resistant glass 8 can be made of any commercially available fire-resistant material. In addition to providing fire protection, the fire-resistant glass also facilitates personnel's observation of the situation inside and outside the mine.

[0064] In some feasible embodiments, the sliding door 4 is also fitted with a recessed door handle 7, which is located below the fireproof glass 8. The recessed door handle provides a part for people to push and pull.

[0065] The application provides a self-weight return type self-closing sliding door for a mine, which comprises a bottom frame, a top frame, a fixed door, a moving door and a first sliding rail.

[0066] The specific embodiments provided above are only a few examples of the general concept of the application, and do not constitute a limitation on the protection scope of the application. Any other embodiments extended on the basis of the application scheme without creative labor are within the protection scope of the application.

Claims

1. A self-closing sliding door for a mine, characterized in that, The utility model relates to a kind of movable door and movable door sliding rail angle adjusting mechanism, including: Bottom frame (1), the bottom frame (1) is buried in ground, and upper surface is flush with ground surface; Top frame (2);The top frame (2) is located above the bottom frame (1), and is laid along the same direction with the bottom frame (1);Two ends of the bottom frame (1) are connected with the two ends of the top frame (2) respectively through side frame (9), to form square frame structure; Fixed door (3) is located between the bottom frame (1) and top frame (2);The fixed door (3) is equipped with two, and is located in one end above the bottom frame (1) respectively, three edges of the fixed door (3) are fixedly connected with the bottom frame (1), top frame (2), side frame (9) respectively;Two fixed doors (3) form personnel passage between them; Movable door (4);The movable door (4) is equipped with two, and the door body formed by the abutment of two movable doors (4) completely covers the personnel passage;The top end of the movable door (4) is slidably connected with first slide rail (21) arranged in the top frame (2);The bottom end of the movable door (4) is slidably connected with second slide rail (22) arranged in the bottom frame (1);The horizontal height of the first slide rail (21) increases successively along the central position of the first slide rail (21) to both end positions.

2. A gravity return self-closing sliding door for a mine according to claim 1, characterised in that, Further including: Slide rail adjusting mechanism, the slide rail adjusting mechanism is located in both ends of top frame (2); The central position of the first slide rail (21) is hinged with the top frame (2), and the end of the first slide rail (21) is connected with the slide rail adjusting mechanism, so as to change the laying angle of the first slide rail (21) under the action of the slide rail adjusting mechanism.

3. A gravity return, self-closing sliding door for a mine according to claim 2, characterised in that, The slide rail adjusting mechanism includes: Threaded rod (51);The middle part of the threaded rod (51) is threadedly connected with the top frame (2), one end of the threaded rod (51) is abutted below the end of the first slide rail (21);The other end of the threaded rod (51) is connected to operating rod (52).

4. A gravity return self-closing sliding door for a mine according to any one of claims 1 to 3, characterised in that, The opposite side of the movable door (4) is provided with recoil assembly (6);The recoil assembly (6) includes: Housing (61) arranged inside the movable door (4);The housing (61) is communicated with the outside of the movable door (4) through through hole (62); Buffer (63);One end of the buffer (63) extends out of the through hole (62), and the other end is connected with connecting plate (64);The connecting plate (64) is connected to the housing (61) through spring (65).

5. The self-closing, counterbalanced sliding door for a mine shaft according to claim 1, wherein, The bottom frame (1) is provided with adjacent first groove and second groove, and the fixed door (3) is arranged in the first groove;The second slide rail (22) is arranged in the second groove.

6. A gravity return, self-closing sliding door for a mine according to claim 4, characterised in that, At least one first pulley (41) is arranged on the side of the movable door (4) close to the top frame (2);The first pulley (41) is in rolling contact with the first slide rail (21).

7. A gravity return, self-closing sliding door for a mine according to claim 6, characterised in that, At least one second pulley (42) is arranged on the side of the movable door (4) close to the top frame (2);The second pulley (42) is in rolling contact with the first slide rail (21), and the axes of the first pulley (41) and the second pulley (42) are perpendicular to each other.

8. A gravity return, self-closing sliding door for a mine according to claim 7, characterised in that, The mobile door (4) is provided with a plurality of third pulleys (43) near one side of the bottom frame (1), and the plurality of third pulleys (43) are equidistantly arranged on the bottom surface of the mobile door; the axis of the third pulley (43) is parallel to the axis of the first pulley (41) or the second pulley (42).

9. The self-closing, counterbalanced, sliding door according to claim 1, wherein, The upper part of the mobile door (4) is embedded with fireproof glass (8).

10. A gravity return, self-closing sliding door for a mine according to claim 9, characterised in that, The mobile door (4) is further inlaid with a recessed door handle (7), and the recessed door handle (7) is located below the fireproof glass (8).

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