Downhole automatic wind blocking door

Abstract

The underground automatic wind shielding door comprises a door body and a wind shielding curtain, and the door body is hinged to a door frame through hinges; the wind curtains are hinged to the four door edges of the door body through automatic rebounding devices respectively, the outward sides of the wind curtains are tightly attached to the door frame through rebounding force of the automatic rebounding devices, each automatic rebounding device comprises a fixed hinge, a movable hinge, a pin shaft and a spring, the fixed hinge is fixedly connected to the door body, the movable hinge is fixedly connected to the wind curtains, and the pin shaft is fixedly connected to the door frame. The fixed hinge and the movable hinge are rotationally connected through the pin shaft, the pin shaft is sleeved with the spring, and the two ends of the spring abut against the fixed hinge and the movable hinge respectively. By arranging the wind shielding curtain and the automatic rebounding device, the wind shielding curtain is automatically and tightly attached to the door frame, the windproof effect is achieved, the automatic rebounding device is of a spring hinge structure, the wind shielding curtain can be freely bent and is not prone to damage, the service life is prolonged, workers do not need to frequently maintain and replace the wind shielding curtain, and the working efficiency is improved. And manpower and material resources are greatly saved.

Description

Technical Field

[0001] The invention relates to the technical field of mining equipment, and in particular to an automatic air shielding door underground. Background Art

[0002] A windshield is usually installed on the damper in the mine to prevent air leakage from the damper. In the prior art, a single-layer crystal plate is usually installed on the door body as a windshield. However, due to the relatively soft texture of the crystal plate, long-term use will cause the crystal plate to deform and fail to fit tightly with the door frame, resulting in air leakage from the damper. In addition, since the damper is frequently opened and closed, the crystal plate is easily damaged, requiring staff to frequently maintain or replace the crystal plate, wasting a lot of time. If the crystal plate is not firmly fixed, it will cause the crystal plate to fall off directly, making the damper leakage more serious. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, an embodiment of the present invention provides an underground automatic air barrier door, which can prevent air leakage from the air barrier door, extend the service life, and reduce the maintenance work of personnel.

[0004] An embodiment of the present invention proposes an automatic underground windshield door, including a door body and a windshield curtain, wherein the door body is hinged to the door frame by hinges; the windshield curtain is hinged to the four door edges of the door body by automatic rebound devices, respectively, and the outward side of the windshield curtain is tightly fitted to the door frame by the rebound force of the automatic rebound device, and the automatic rebound device includes a fixed page, a movable page, a pin shaft and a spring, the fixed page is fixedly connected to the door body, the movable page is fixedly connected to the windshield curtain, the fixed page and the movable page are rotatably connected by a pin shaft, the spring is sleeved on the outside of the pin shaft, and the two ends of the spring are respectively abutted against the fixed page and the movable page.

[0005] In some embodiments, the windshield curtain includes a metal plate, a crystal plate and a sealing strip. One side of the metal plate is fixedly connected to the movable leaf, and the other side of the metal plate is fixedly connected to one side of the crystal plate. The other side of the crystal plate is fixedly connected to the sealing strip. The sealing strip is suitable for tightly abutting against the door frame.

[0006] In some embodiments, the metal plate and the crystal plate, as well as the crystal plate and the sealing strip are fixedly connected by moisture-proof glue.

[0007] In some embodiments, the windshield curtain includes an upper windshield curtain, a lower windshield curtain, a left windshield curtain and a right windshield curtain. Two adjacent windshield curtains are abutted or overlapped with each other. The upper windshield curtain, the lower windshield curtain, the left windshield curtain and the right windshield curtain are respectively and evenly connected with no less than three automatic rebound devices. The door frame includes an upper door frame, a lower door frame, a left door frame and a right door frame. The upper windshield curtain is connected to the upper door frame, the lower windshield curtain is connected to the lower door frame, the left windshield curtain is connected to the left door frame, and the right windshield curtain is connected to the right door frame.

[0008] In some embodiments, a limiting device is connected to the automatic rebound device to limit the rotation range of the movable page.

[0009] In some embodiments, the limiting device includes a screw rod and a limiting nut. The limiting nut is fixedly connected to the fixed page. The screw rod and the limiting nut are threadedly connected. A limiting slot is opened on the movable page. The top end of the screw rod is pressed into the limiting slot. The rotation range of the movable page is adjusted by rotating the screw rod.

[0010] In some embodiments, a visual window is provided on the door body.

[0011] In some embodiments, a linkage latch is also included, wherein the linkage latch includes a first latch body, a second latch body, a first stop block, a second stop block and a connecting shaft, the first stop block is fixedly connected to one side of the door body, the second stop block is fixedly connected to the other side of the door body, the positions of the first stop block and the second stop block correspond in the horizontal direction, a slot for the first latch body to be inserted is provided above the first stop block, and a slot for the second latch body to be inserted is provided above the second stop block, the connecting shaft passes through the side of the door frame opposite to the hinge in the horizontal direction, the two ends of the connecting shaft are respectively connected to the first latch body and the second latch body, the first latch body and the second latch body rotate around the connecting shaft at the same time or remain stationary.

[0012] In some embodiments, a magnet is fixedly connected to one side of the mounting connecting shaft of the door frame, and an end of the first latch body away from the connecting shaft is fixedly connected to an iron sheet. When the first latch body rotates to a vertical state, the first latch body is adsorbed on the magnet through the iron sheet.

[0013] In some embodiments, the outer side of the first stopper is fixedly connected to the anti-collision strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings.

[0015] in:

[0016] Figure 1 It is a schematic diagram of the structure of an automatic underground wind shield door in an embodiment of the present invention;

[0017] Figure 2 for Figure 1 An enlarged schematic diagram of part A in FIG.

[0018] Figure 3 for Figure 1 A schematic diagram of the structure of the automatic rebound device;

[0019] Figure 4 for Figure 1 A left view of the left windshield curtain in FIG.

[0020] Figure 5 It is a structural schematic diagram of the linkage door latch;

[0021] Reference numerals:

[0022] 1-door body; 2-hinge; 3-door frame; 4-throttle fixing device; 5-automatic rebound device; 6-wind curtain; 7-visible window; 8-first stopper; 9-iron sheet; 10-first latch body; 11-anti-collision strip; 12-magnet; 13-connecting shaft; 14-second latch body;

[0023] 51-movable page; 52-pin shaft; 53-fixed page; 54-spring; 55-limiting groove; 56-screw rod; 57-limiting nut;

[0024] 61-metal plate; 62-crystal plate; 63-sealing strip; 64-moisture-proof glue. DETAILED DESCRIPTION

[0025] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0026] The automatic underground wind shield door according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0027] like Figure 1-5 As shown, an embodiment of the present invention proposes an automatic underground windshield door, including a door body 1 and a windshield curtain 6. The door body 1 is hinged to the door frame 3 through a hinge 2; the windshield curtain 6 is hinged to the four door edges of the door body 1 through an automatic rebound device 5, respectively, and the outward side of the windshield curtain 6 is tightly fitted on the door frame 3 through the rebound force of the automatic rebound device 5. The automatic rebound device 5 includes a fixed page 53, a movable page 51, a pin shaft 52 and a spring 54. The fixed page 53 is fixedly connected to the door body 1, and the movable page 51 is fixedly connected to the windshield curtain 6. The fixed page 53 and the movable page 51 are rotatably connected through the pin shaft 52. The spring 54 is sleeved on the outside of the pin shaft 52, and the two ends of the spring 54 are respectively abutted against the fixed page 53 and the movable page 51.

[0028] The embodiment of the present invention provides a windshield curtain 6 and an automatic rebound device 5 so that the windshield curtain 6 automatically fits tightly against the door frame 3 to achieve a windproof effect. The automatic rebound device 5 adopts a spring hinge structure so that the windshield curtain 6 can be bent freely and is not prone to damage, thereby extending its service life. Therefore, there is no need for staff to perform frequent maintenance and replacement, thus saving a lot of manpower and material resources.

[0029] It should be noted that the windshield curtain 6 is installed on the side of the door body 1 in the opening direction, and the automatic rebound device 5 is arranged on the back of the windshield curtain 6 and the door body 1, that is, the side opposite to the opening direction of the door body 1.

[0030] Furthermore, the fixed leaf 53 is fixedly connected to the edge of the door body 1 by screws, and the movable leaf 51 is fixedly connected to the windshield curtain 6 by screws.

[0031] Furthermore, the windshield curtain 6 is manufactured according to the width of the gap between the door body 1 and the door frame 3 , with the width of the gap being such that the windshield curtain 6 can completely cover it.

[0032] Furthermore, the door frame 3 is fixedly connected to the surrounding wall underground through the air door fixing device 4.

[0033] Furthermore, the door frame 3 is made of iron material to improve stability.

[0034] In some embodiments, Figure 4 As shown, the windshield curtain 6 includes a metal plate 61, a crystal plate 62 and a sealing strip 63. One side of the metal plate 61 is fixedly connected to the movable leaf 51, and the other side of the metal plate 61 is fixedly connected to one side of the crystal plate 62. The other side of the crystal plate 62 is fixedly connected to the sealing strip 63. The sealing strip 63 is suitable for tightly contacting the door frame 3. The sealing strip 63 can improve the sealing performance between the windshield curtain 6 and the door frame 3.

[0035] Furthermore, the metal plate 61 is an iron plate, which is relatively hard and not easily damaged, and can protect the crystal plate 62.

[0036] In some embodiments, Figure 4 As shown, the metal plate 61 and the crystal plate 62 as well as the crystal plate 62 and the sealing strip 63 are fixedly connected by moisture-proof glue 64 .

[0037] In some embodiments, Figure 1 As shown, the windshield curtain 6 includes an upper windshield curtain, a lower windshield curtain, a left windshield curtain and a right windshield curtain, two adjacent windshield curtains 6 are mutually abutted or overlapped, and at least three automatic rebound devices 5 are evenly connected to the upper windshield curtain, the lower windshield curtain, the left windshield curtain and the right windshield curtain, respectively. The door frame 3 includes an upper door frame, a lower door frame, a left door frame and a right door frame. The upper windshield curtain is connected to the upper door frame, the lower windshield curtain is connected to the lower door frame, the left windshield curtain is connected to the left door frame, and the right windshield curtain is connected to the right door frame. By evenly distributing a plurality of automatic rebound devices 5, the windshield curtain 6 and the door frame 3 are more closely fitted.

[0038] Furthermore, the hinge 2 is connected to the left edge of the left door frame and the door body 1. Regardless of whether the door is open or not, the left windshield curtain always remains in close contact with the left door frame. When the door body 1 is opened, the upper windshield curtain is separated from the upper door frame, the right windshield curtain is separated from the right door frame, and the lower windshield curtain is separated from the lower door frame. Due to the elastic restoring force of the automatic rebound device 5, the upper windshield curtain, the right windshield curtain and the lower windshield curtain are all in a relatively closed state (not completely closed). When the door body 1 is closed, the upper door frame gradually applies a pressing force to the upper windshield curtain, causing the movable leaf 51 of the upper windshield curtain to gradually open, and finally causing the movable leaf 51 to be pressed against the door frame 3. The action process of the lower windshield curtain is the same as that of the right windshield curtain.

[0039] In some embodiments, a limiting device is connected to the automatic rebound device 5 to limit the rotation range of the movable page 51 .

[0040] It should be noted that when the door body 1 is open, the movable page 51 and the fixed page 53 cannot be completely closed, otherwise the movable page 51 cannot be opened again. Therefore, a limiting device is used to maintain a certain angle between the movable page 51 and the fixed page 53, so that the movable page 51 and the fixed page 53 form a half-open state, ensuring that when the door body 1 is closed, the door frame 3 can squeeze the movable page 51, thereby achieving a fitting state.

[0041] In some embodiments, Figure 3 As shown, the limiting device includes a screw rod 56 and a limiting nut 57. The limiting nut 57 is fixedly connected to the fixed page 53. The screw rod 56 and the limiting nut 57 are threadedly connected. A limiting groove 55 is provided on the movable page 51. The top end of the screw rod 56 is pressed in the limiting groove 55. The rotation range of the movable page 51 is adjusted by rotating the screw rod 56, and then the maximum opening angle between the movable page 51 and the fixed page 53 is adjusted to meet different actual needs.

[0042] When the door body 1 is opened, the end of the screw rod 56 away from the nut will be stuck in the limit groove 55, and the movable leaf 51 and the fixed leaf 53 will not be completely closed. When the door body 1 is closed, the spring 54 of the automatic rebound device 5 can make the wind screen 6 fit closely to the surface of the door frame 3.

[0043] In some alternative embodiments, the method of providing the limiting groove 55 can be replaced by a method of fixedly connecting the limiting block, so that the screw rod 56 presses against the limiting block to achieve the limiting effect.

[0044] In some embodiments, Figure 1 As shown, a visual window 7 is provided on the door body 1, so that the staff can check what is happening on the opposite side of the windshield door.

[0045] Furthermore, the viewing window 7 is a sealed glass structure to prevent air leakage from the viewing window 7.

[0046] In some embodiments, Figure 2 , 5 As shown, the underground automatic wind-blocking door also includes a linkage door latch, which includes a first latch body 10, a second latch body 14, a first stopper 8, a second stopper and a connecting shaft 13. The first stopper 8 is fixedly connected to one side of the door body 1, and the second stopper is fixedly connected to the other side of the door body 1. The positions of the first stopper 8 and the second stopper correspond to each other in the horizontal direction. A slot for the first latch body 10 to be inserted is provided above the first stopper 8, and a slot for the second latch body 14 to be inserted is provided above the second stopper. The connecting shaft 13 passes through the side of the door frame 3 opposite to the hinge 2 in the horizontal direction. The two ends of the connecting shaft 13 are respectively connected to the first latch body 10 and the second latch body 14. The first latch body 10 and the second latch body 14 rotate around the connecting shaft 13 at the same time or remain stationary. It can ensure that the staff on both sides of the door body 1 can open and close the door smoothly, and at the same time ensure that the door body 1 will not leak air when the door is closed.

[0047] In some embodiments, Figure 2 As shown, one side of the mounting connecting shaft 13 of the door frame 3 is fixedly connected to the magnet 12, and one end of the first latch body 10 away from the connecting shaft 13 is fixedly connected to the iron sheet 9. When the first latch body 10 is rotated to a vertical state, the first latch body 10 is adsorbed on the magnet 12 through the iron sheet 9.

[0048] When the door body 1 needs to remain open for a long time, the latch body is fixed to the door frame 3 by magnetic adsorption to prevent the latch body from rotating downward due to its own gravity, to prevent the outward protruding latch body from causing damage to the staff or equipment entering or leaving, and to prevent the equipment entering or leaving from causing damage to the latch body.

[0049] Furthermore, at least one of the first latch body 10 and the second latch body 14 is connected with an iron sheet 9, and a magnet 12 is disposed at a corresponding position on the side.

[0050] In some embodiments, Figure 2 As shown, the outer side of the first stopper 8 is fixedly connected to the anti-collision strip 11. This can prevent the door body 1 from colliding with the wall next to it after the door body 1 is fully opened.

[0051] Further, the anti-collision strip 11 is made of rubber and is connected to the first stopper 8 by bonding, so that the damaged or aged anti-collision strip 11 can be replaced.

[0052] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0053] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0054] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0056] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0057] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An automatic underground wind shield, characterized in that: include: A door body, wherein the door body is hinged to the door frame through hinges; A windshield curtain, wherein the windshield curtain is hinged to the four door edges of the door body through automatic rebound devices, and the outward side of the windshield curtain is tightly fitted to the door frame through the rebound force of the automatic rebound device. The automatic rebound device includes a fixed page, a movable page, a pin and a spring. The fixed page is fixedly connected to the door body, and the movable page is fixedly connected to the windshield curtain. The fixed page and the movable page are rotatably connected through a pin, and the spring is sleeved on the outside of the pin, and the two ends of the spring are respectively abutted against the fixed page and the movable page.

2. The automatic underground wind shield door according to claim 1, characterized in that: The windshield curtain includes a metal plate, a crystal plate and a sealing strip, one side of the metal plate is fixedly connected to the movable leaf, the other side of the metal plate is fixedly connected to one side of the crystal plate, the other side of the crystal plate is fixedly connected to the sealing strip, and the sealing strip is suitable for tightly abutting against the door frame.

3. The automatic underground wind shield door according to claim 2, characterized in that: The metal plate and the crystal plate as well as the crystal plate and the sealing strip are fixedly connected by moisture-proof glue respectively.

4. The automatic underground wind shield door according to claim 1, characterized in that: The windshield curtain comprises an upper windshield curtain, a lower windshield curtain, a left windshield curtain and a right windshield curtain. Two adjacent windshield curtains abut or overlap each other. No less than three automatic rebound devices are evenly connected to the upper windshield curtain, the lower windshield curtain, the left windshield curtain and the right windshield curtain respectively. The door frame comprises an upper door frame, a lower door frame, a left door frame and a right door frame. The upper windshield curtain is connected to the upper door frame, the lower windshield curtain is connected to the lower door frame, the left windshield curtain is connected to the left door frame, and the right windshield curtain is connected to the right door frame.

5. The automatic underground air barrier door according to claim 1, characterized in that: The automatic rebound device is connected to a limiting device to limit the rotation range of the movable page.

6. The automatic underground air barrier door according to claim 5, characterized in that: The limiting device includes a screw rod and a limiting nut, the limiting nut is fixedly connected to the fixed page, the screw rod and the limiting nut are threadedly connected, a limiting groove is provided on the movable page, the top end of the screw rod is pressed into the limiting groove, and the rotation range of the movable page is adjusted by rotating the screw rod.

7. The automatic underground air barrier door according to claim 1, characterized in that: The door body is provided with a visual window.

8. The automatic underground wind shield door according to claim 1, characterized in that: The linkage door latch also includes a first latch body, a second latch body, a first stopper, a second stopper and a connecting shaft, the first stopper being fixedly connected to one side of the door body, the second stopper being fixedly connected to the other side of the door body, the positions of the first stopper and the second stopper corresponding to each other in the horizontal direction, a slot for the first latch body to be inserted into is provided above the first stopper, a slot for the second latch body to be inserted into is provided above the second stopper, the connecting shaft passes through the side of the door frame opposite to the hinge in the horizontal direction, the two ends of the connecting shaft are respectively connected to the first latch body and the second latch body, the first latch body and the second latch body rotate around the connecting shaft at the same time or remain stationary.

9. The automatic underground wind shield door according to claim 8, characterized in that: A magnet is fixedly connected to one side of the door frame where the connecting shaft is installed, and an iron sheet is fixedly connected to one end of the first latch body away from the connecting shaft. When the first latch body is rotated to a vertical state, the first latch body is adsorbed on the magnet through the iron sheet.

10. The automatic underground air barrier door according to claim 8, characterized in that: The outer side of the first stopper is fixedly connected to the anti-collision strip.

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