Novel locking device of coal mine ventilation air door

Abstract

The utility model relates to the technical field of locking devices, and discloses a novel coal mine ventilation air door locking device which comprises a rectangular box, a bottom plate is fixedly installed on the inner wall of the bottom of the rectangular box, a connecting plate is fixedly installed on the top of the bottom plate, and two symmetrically-arranged rotating columns are rotatably installed on the top of the bottom plate. A lifting block is slidably mounted on the rotating column, a spring groove is formed in one side of the connecting plate, one end of a spring is fixedly mounted at the top of the lifting block, the other end of the spring is fixedly mounted on the inner wall of the top of the spring groove, a screw is fixedly mounted at the top end of the rotating column, and a lifting seat is in threaded connection with the screw. And a groove is formed in one side of the connecting plate. And the other lifting plate can be limited through rotation of the rotating plate, so that the other lifting door is prevented from lifting, the situation that the two doors are in an open or semi-open state at the same time is avoided, the phenomenon of air flow short circuit is avoided, and the working stability and reliability of the air door can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of locking devices, in particular to a novel locking device for a ventilation damper in a coal mine. Background Art

[0002] In coal mining, the safety of coal mines is very important. Among them, the mine ventilation system is the key to ensuring the safety of the mine, and the air damper in the mine ventilation system is the key to maintaining the stable operation of the mine ventilation system. The air damper is set for pedestrians and vehicles underground. While ensuring the passage of pedestrians and vehicles underground, it avoids airflow short circuit, thereby ensuring the reliable operation of the entire ventilation system. The air damper of the mine is usually used by two doors in cooperation with each other. When one door is opened, the other door is in a closed state. At one time, the two doors cannot be opened at the same time to prevent the occurrence of airflow short circuit. At present, the two doors in the air damper are generally controlled by mutual locking of the two doors through a steel wire rope connected between the two doors. When one door is fully opened, the steel wire rope will be tightened, so that the other door can be tightened under the force of the steel wire tension and tightly in a closed state, so that the two air dampers will not be in an open state at the same time.

[0003] However, when the existing damper is working, since the two doors of the damper are locked with each other only by pulling a steel wire rope, when one door is in a half-open state, the other door may also be half-open. At this time, the two doors will be in a half-open state at the same time, resulting in a wind short circuit between the two doors or a local fan circulating wind phenomenon. The mutual locking of the two doors cannot be effectively guaranteed, and the reliability of the mutual locking of the dampers is poor, which brings safety hazards to the normal operation of the mine. Therefore, we propose a new locking device for coal mine ventilation dampers to solve the above-mentioned problems. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a novel locking device for a coal mine ventilation damper to solve the problems mentioned in the above background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new locking device for coal mine ventilation damper, comprising a rectangular box, a bottom plate fixedly installed on the bottom inner wall of the rectangular box, a connecting plate fixedly installed on the top of the bottom plate, two symmetrically arranged rotating columns rotatably installed on the top of the bottom plate, a lifting block slidably installed on the rotating column, a spring groove is opened on one side of the connecting plate, one end of a spring is fixedly installed on the top of the lifting block, and the other end of the spring is fixedly installed on the top inner wall of the spring groove, a screw is fixedly installed on the top of the rotating column, a lifting seat is threadedly connected to the screw, a groove is opened on one side of the connecting plate, a limiting groove is opened on one side inner wall of the groove, a lifting plate is provided on the top of the lifting block, a lifting door is provided on one side of the lifting block, fixing holes are opened on both sides of the rectangular box, and the lifting door cooperates with the fixing holes.

[0008] Preferably, a spiral groove is provided on the rotating column, a fixing hole is provided on the top of the lifting block, a connecting rod is fixedly installed on the inner wall of the fixing block, and one end of the connecting rod extends into the spiral groove and is slidably installed in the spiral groove.

[0009] Preferably, the screw rod is provided with an external thread, the top of the lifting seat is provided with a threaded hole, the side wall of the threaded hole is provided with an internal thread, and the internal thread is meshed with the external thread.

[0010] Preferably, a rotating plate is rotatably mounted on the top of the connecting plate, and a top plate is fixedly mounted on the top of the lifting seat, and the top plate cooperates with the rotating plate.

[0011] Preferably, pulleys are fixedly mounted on the inner walls of both sides of the rectangular box, one end of a thin rope is provided on the pulley, and the other end of the thin rope is fixedly mounted on the top of the lifting plate.

[0012] Preferably, one side of the lifting block extends into the limiting groove and is fixedly installed with a limiting seat, and the limiting seat is slidably installed in the limiting groove.

[0013] Three beneficial effects

[0014] The utility model provides a novel locking device for coal mine ventilation dampers, which has the following beneficial effects:

[0015] The rotation of the rotating column can make the screw rotate, the rotation of the screw can make the lifting seat rise and fall, the lifting of the lifting seat can drive the top plate to rise and fall, the lifting of the top plate can drive the rotation of the rotating plate, and the rotation of the rotating plate can limit the other lifting plate, thereby preventing the other lifting door from rising and falling. The two doors will not be in the open or half-open state at the same time, avoiding the phenomenon of airflow short circuit, and effectively improving the stability and reliability of the damper operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure diagram of the utility model is as follows:

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 3 It is an enlarged structural schematic diagram of part A in the utility model;

[0019] Figure 4 It is an enlarged structural schematic diagram of part B in the utility model.

[0020] In the figure: 1. rectangular box; 2. bottom plate; 3. fixing hole; 4. lifting door; 5. lifting plate; 6. connecting plate; 7. pulley; 8. thin rope; 9. rotating plate; 10. screw rod; 11. groove; 12. limiting groove; 13. lifting seat; 14. top plate; 15. lifting block; 16. connecting rod; 17. spring; 18. rotating column. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In the description of the present invention, it should 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" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and 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 a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0024] Embodiment 1

[0025] like Figure 1-3As shown, the utility model provides a technical solution: a new locking device for a coal mine ventilation damper, comprising a rectangular box 1, a bottom plate 2 is fixedly installed on the bottom inner wall of the rectangular box 1, a connecting plate 6 is fixedly installed on the top of the bottom plate 2, two symmetrically arranged rotating columns 18 are rotatably installed on the top of the bottom plate 2, a lifting block 15 is slidably installed on the rotating column 18, a spring groove is provided on one side of the connecting plate 6, one end of a spring 17 is fixedly installed on the top of the lifting block 15, and the other end of the spring 17 is fixedly installed on the top inner wall of the spring groove, a screw rod 10 is fixedly installed on the top of the rotating column 18, a lifting seat 13 is threadedly connected to the screw rod 10, a groove 11 is provided on one side of the connecting plate 6, a limiting groove 12 is provided on the inner wall of one side of the groove 11, a lifting plate 5 is provided on the top of the lifting block 15, a lifting door 4 is provided on one side of the lifting block 15, fixing holes 3 are provided on both sides of the rectangular box 1, and the lifting door 4 cooperates with the fixing holes 3.

[0026] Specifically, a spiral groove is provided on the rotating column 18, a fixing hole is provided on the top of the lifting block 15, a connecting rod 16 is fixedly installed on the inner wall of the fixing block, one end of the connecting rod 16 extends into the spiral groove and is slidably installed in the spiral groove. Through the arrangement of the spiral groove and the connecting rod 16, the rotating column 18 can be rotated when the connecting rod 16 is lifted or lowered in the spiral groove.

[0027] Specifically, the screw rod 10 is provided with an external thread, the top of the lifting seat 13 is provided with a threaded hole, the side wall of the threaded hole is provided with an internal thread, the internal thread is meshed with the external thread, and the threaded structure is set so that the lifting seat 13 can be lifted and lowered when the screw rod 10 rotates.

[0028] Specifically, a rotating plate 9 is rotatably installed on the top of the connecting plate 6, and a top plate 14 is fixedly installed on the top of the lifting block 15. The top plate 14 cooperates with the rotating plate 9. Through the coordinated setting of the top plate 14 and the rotating plate 9, the rotating plate 9 can be driven to rotate when the top plate 14 is lifted or lowered.

[0029] Specifically, pulleys 7 are fixedly installed on the inner walls on both sides of the rectangular box 1, one end of a thin rope 8 is provided on the pulley 7, and the other end of the thin rope 8 is fixedly installed on the top of the lifting plate 5. Through the setting of the thin rope 8, the lifting plate 5 can be raised and lowered when the thin rope 8 is pulled.

[0030] Specifically, one side of the lifting block 15 extends into the limiting groove 12 and is fixedly installed with a limiting seat, which is slidably installed in the limiting groove 12. Through the setting of the limiting seat box and the limiting groove 12, the lifting block 15 can be well limited when it is lifted or lowered.

[0031] The working process of the utility model is as follows: pulling the thin rope 8, the thin rope 8 can drive the lifting plate 5 to be lifted and lowered, the lifting and lowering of the lifting plate 5 can make the lifting block 15 to be lifted and lowered, the lifting and lowering of the lifting block 15 can drive the lifting door 4 to be lifted and lowered, so that the lifting door 4 can be opened, and the lifting and lowering of the lifting block 15 can make the connecting rod 16 to be lifted and lowered in the spiral groove, so that the connecting rod 16 can make the rotating column 18 rotate when moving, the rotation of the rotating column 18 can make the screw 10 rotate, the rotation of the screw 10 can make the lifting seat 13 to be lifted and lowered, the lifting and lowering of the lifting seat 13 can drive the top plate 14 to be lifted and lowered, the lifting and lowering of the top plate 14 can drive the rotating plate 9 to rotate, the rotation of the rotating plate 9 can limit the other lifting plate 5, thereby preventing the other lifting door 4 from being lifted and lowered, and the two doors will not be in the open or semi-open state at the same time, avoiding the phenomenon of wind flow short circuit, and effectively improving the stability and reliability of the damper operation.

[0032] 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.

[0033] 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 novel locking device for a coal mine ventilation damper, comprising a rectangular box (1), characterized in that: A bottom plate (2) is fixedly mounted on the inner wall of the bottom of the rectangular box (1), a connecting plate (6) is fixedly mounted on the top of the bottom plate (2), two symmetrically arranged rotating columns (18) are rotatably mounted on the top of the bottom plate (2), a lifting block (15) is slidably mounted on the rotating column (18), a spring groove is provided on one side of the connecting plate (6), one end of a spring (17) is fixedly mounted on the top of the lifting block (15), and the other end of the spring (17) is fixedly mounted on the inner wall of the top of the spring groove, A screw rod (10) is fixedly installed on the top of the rotating column (18), and a lifting seat (13) is threadedly connected to the screw rod (10). A groove (11) is provided on one side of the connecting plate (6), and a limiting groove (12) is provided on the inner wall of one side of the groove (11). A lifting plate (5) is provided on the top of the lifting block (15), and a lifting door (4) is provided on one side of the lifting block (15). Fixing holes (3) are provided on both sides of the rectangular box (1), and the lifting door (4) matches the fixing holes (3).

2. A novel locking device for coal mine ventilation dampers according to claim 1, characterized in that: The rotating column (18) is provided with a spiral groove, the top of the lifting block (15) is provided with a fixing hole, a connecting rod (16) is fixedly installed on the inner wall of the fixing hole, and one end of the connecting rod (16) extends into the spiral groove and is slidably installed in the spiral groove.

3. A novel locking device for coal mine ventilation dampers according to claim 1, characterized in that: The screw rod (10) is provided with an external thread, the top of the lifting seat (13) is provided with a threaded hole, the side wall of the threaded hole is provided with an internal thread, and the internal thread is meshed with the external thread.

4. A novel locking device for coal mine ventilation dampers according to claim 1, characterized in that: A rotating plate (9) is rotatably mounted on the top of the connecting plate (6), and a top plate (14) is fixedly mounted on the top of the lifting seat (13), wherein the top plate (14) matches the rotating plate (9).

5. A novel locking device for coal mine ventilation dampers according to claim 1, characterized in that: Pulleys (7) are fixedly mounted on the inner walls of both sides of the rectangular box (1), one end of a thin rope (8) is provided on the pulley (7), and the other end of the thin rope (8) is fixedly mounted on the top of the lifting plate (5).

6. A novel locking device for coal mine ventilation dampers according to claim 1, characterized in that: One side of the lifting block (15) extends into the limiting groove (12) and is fixedly mounted with a limiting seat, and the limiting seat is slidably mounted in the limiting groove (12).

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