Air door bottom lifting device

Abstract

The utility model discloses an air door bottom lifting device, and relates to the technical field of air doors. The lifting device comprises a baffle connected to the side wall of the air door in a sliding mode; the pulling mechanism is connected to the side wall of the air door and connected with the baffle; the pushing mechanism is connected to the side wall of the air door and connected with the pulling mechanism; the elastic assembly is connected to the side wall of the air door and connected with the pushing mechanism; when the air door is closed, the door frame drives the pushing mechanism, the pushing mechanism is used for pushing the pulling mechanism to enable the baffle to descend, and when the air door is opened, the elastic assembly contracts to be used for pulling the pushing mechanism to reset and pulling the pulling mechanism to enable the baffle to ascend. Compared with air cylinder driving, more cost is saved, control of workers is not needed, and the labor intensity of the workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air doors, in particular to an air door bottom lifting device. Background Art

[0002] The damper is an important structure in the mine ventilation system. It is used to block the wind flow, create conditions for the distribution of mine wind flow on demand, and provide convenience for pedestrians and transportation. It is one of the most important components to ensure ventilation safety underground; it is used to block the wind flow in the tunnel or limit the wind volume passing through the tunnel, ensure the wind volume requirements of the places where wind is needed, and enable people and vehicles to pass through.

[0003] However, due to the uneven ground inside the mine tunnel, air leakage may occur when the damper is in the closed state.

[0004] In order to solve the above problems, the prior art application number is: 202222563477.3, and the name is a mine tunnel damper device, which discloses: a movable baffle and a third auxiliary cylinder are installed under the door leaf, the piston end of the third auxiliary cylinder is connected to the movable baffle, and the movable baffle is connected to the door leaf through a hinge. When the height of the movable baffle needs to be adjusted, the third auxiliary cylinder is controlled by the control device to start working, and the piston rod in the third auxiliary cylinder moves under the action of pressure to lift the movable baffle to an appropriate height, so that the damper can still be opened normally. When sealing is required, after the door leaf is closed, the movable baffle is lowered by the third auxiliary cylinder to cover the bottom of the door leaf.

[0005] In the above solution, the height of the movable baffle is driven by a cylinder, which is costly and requires control by a staff. Utility Model Content

[0006] In order to solve the problems in the prior art, the utility model provides a damper bottom lifting device.

[0007] The lifting device comprises:

[0008] A baffle, slidably connected to the side wall of the damper;

[0009] A pulling mechanism connected to the side wall of the damper and connected to the baffle;

[0010] A pushing mechanism, connected to the side wall of the damper and connected to the pulling mechanism;

[0011] An elastic component is connected to the side wall of the damper and is connected to the driving mechanism;

[0012] When the damper is closed, the door frame drives the pushing mechanism, and the pushing mechanism is used to push the pulling mechanism to lower the baffle. When the damper is opened, the elastic component contracts to pull the pushing mechanism to reset and pull the pulling mechanism to raise the baffle.

[0013] Furthermore, a slide groove is provided on the side wall of the damper, and the baffle is slidably connected in the slide groove.

[0014] Furthermore, the pulling mechanism comprises:

[0015] A pulley connected to the side wall of the damper;

[0016] The pull rope is connected with the baffle and the pushing mechanism, and is also slidably connected with the pulley.

[0017] Furthermore, there are two pulleys, and both ends of the pull rope are connected to the baffle.

[0018] Furthermore, two grooves are provided on the top of the baffle, and the grooves correspond to the positions of the pulleys respectively.

[0019] Furthermore, the driving mechanism comprises:

[0020] A guide sleeve connected to the side wall of the damper;

[0021] A push rod, slidably connected in the guide sleeve;

[0022] A linkage plate is rotatably connected to the side wall of the damper and is movably connected to the push rod;

[0023] The pull rope is connected to the linkage plate, and the elastic component is connected to the linkage plate.

[0024] Furthermore, a limiting plate is connected to the side wall of the damper, and after the elastic component contracts to pull the pushing mechanism to reset, the linkage plate abuts against the limiting plate.

[0025] Furthermore, a long strip hole is provided on the linkage plate, and a sliding rod is connected to the end of the push rod, and the sliding rod is slidably connected in the long strip hole.

[0026] Furthermore, a push plate is connected to the side wall of the door frame, and its position corresponds to the push rod, and is used to push the push rod to lower the baffle when the damper is closed.

[0027] Furthermore, the elastic component is a spring.

[0028] Furthermore, the end of the push rod in contact with the push plate is a spherical structure.

[0029] Furthermore, the end of the push plate away from the door frame is inclined toward the push rod.

[0030] The beneficial effects of the technical solution provided by the utility model are as follows: in the utility model, a baffle, a pulling mechanism, a pushing mechanism and an elastic component are provided, the baffle is slidably connected to the bottom of the side wall of the damper, the pulling mechanism is connected to the bottom of the side wall of the damper, and is used to pull the baffle to be lifted and lowered; the pushing mechanism is connected to the bottom of the side wall of the damper and is connected to the pulling mechanism, and is used to drive the pulling mechanism to pull the baffle to be lifted and lowered; the elastic component is connected to the bottom of the side wall of the damper and is connected to the pushing mechanism, and is used to pull the pushing mechanism to reset and pull the pulling mechanism to raise the baffle, when the damper is closed, the door frame drives the pushing mechanism, and the pushing mechanism pushes the pulling mechanism to lower the baffle, when the damper is opened, the elastic component contracts to pull the pushing mechanism to reset, and pulls the pulling mechanism to raise the baffle, which is more cost-effective than cylinder drive, does not require staff control, and reduces the labor intensity of staff.

[0031] In addition, when the damper is closed, lowering the baffle can serve as a seal, and when the damper is open, raising the baffle can reduce the wind pressure. When the wind pressure is reduced, the door opening resistance will also be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a damper bottom lifting device provided by the utility model;

[0033] Figure 2 It is a structural schematic diagram of a damper bottom lifting device provided by the utility model;

[0034] Figure 3 This is a schematic diagram of the connection between a damper bottom lifting device and a door body provided by the utility model;

[0035] Figure 4 This is a schematic diagram of the connection between a damper bottom lifting device and a door body provided by the utility model;

[0036] Figure 5 This is a schematic diagram of the connection between a damper bottom lifting device and a door body provided by the utility model;

[0037] Figure 6 This is a schematic diagram of the connection between a damper bottom lifting device and a door body provided by the utility model;

[0038] Figure 7 It is a structural schematic diagram of a damper bottom lifting device provided by the utility model;

[0039] Figure 8 It is a structural schematic diagram of a damper provided by the utility model;

[0040] Fig. 9 This is a schematic diagram of the opening structure of a damper provided by the utility model;

[0041] Fig.10 This is a schematic diagram of the opening structure of a damper provided by the utility model;

[0042] Fig.11 It is a side view of a damper bottom lifting device provided by the utility model;

[0043] Fig.12 It is a three-dimensional diagram of a damper bottom lifting device provided by the utility model;

[0044] Fig.13 It is a structural schematic diagram of a push plate provided by the utility model.

[0045] Figure markings: 1-baffle; 2-slide groove; 3-pulley; 4-pull rope; 5-groove; 6-guide shaft sleeve; 7-push rod; 8-linkage plate; 9-limiting plate; 10-long strip hole; 11-sliding rod; 12-push plate; 13-spring; 14-door frame; 15-side rod; 16-first air door; 17-second air door; 18-first connecting piece; 19-second connecting piece; 20-connecting rod; 21-housing; 22-first fixed plate; 23-hinge plate; 24-second fixed plate; 25-reinforcement rib; 26-installation groove; 27-bending part; 28-installation hole; 29-bending protrusion. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0048] It should be noted that in this embodiment, the directions or positional relationships indicated by "bottom", "top", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0049] It should also be noted that, in this embodiment, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] First, it should be noted that in order to make the purpose, technical solution and advantages of the utility model clearer, the structure of the damper is illustrated in this embodiment. Figure 8-Figure 10 The damper includes: a door frame 14, the door frame 14 is fixed on the side wall of the mine tunnel, and the two side rods 15 of the door frame 14 are respectively hinged with a first damper 16 and a second damper 17, the top of the side wall in the closing direction of the first damper 16 is connected with an L-shaped first connecting member 18, and the top of the side wall in the opening direction of the second damper 17 is connected with a second connecting member 19, and a connecting rod 20 is movably connected between the first connecting member 18 and the second connecting member 19. When the second damper 17 is opened, the connecting rod 20 will push the first damper 16 to open in the other direction, so that the damper is opened in both directions. The structure of the damper is not limited in the utility model, and the damper bottom lifting device can also be used for other dampers that open in both directions or in the same direction.

[0051] See also Figure 1-Figure 13 A damper bottom lifting device comprises: a baffle 1, a pulling mechanism, a pushing mechanism and an elastic component, wherein the baffle 1 is slidably connected to the bottom of the side wall of the damper, the pulling mechanism is connected to the bottom of the side wall of the damper, and is used to pull the baffle 1 to be lifted and lowered; the pushing mechanism is connected to the bottom of the side wall of the damper and is connected to the pulling mechanism, and is used to drive the pulling mechanism to pull the baffle 1 to be lifted and lowered; the elastic component is connected to the bottom of the side wall of the damper and is connected to the pushing mechanism, and is used to pull the pushing mechanism to reset and pull the pulling mechanism to lift the baffle 1.

[0052] The damper bottom lifting device is connected to the side walls of the first damper 16 and the second damper 17 in the closing direction. When the first damper 16 is closed, the pushing mechanism contacts the door frame 14. When closed, the door frame 14 pushes the pushing mechanism, and the pushing mechanism pushes the pulling mechanism to move downward, thereby lowering the baffle 1 and blocking the bottom of the first damper 16. When the pushing mechanism pushes the pulling mechanism, the elastic component will also stretch; when the first damper 16 is opened, the pushing mechanism does not contact the door frame 14, the elastic component contracts, and pulls the pushing mechanism to reset. When the pushing mechanism resets, it pulls the pulling mechanism to move upward, thereby pulling the baffle 1 up; because the second damper 17 is opened or closed at the same time as the first damper 16 is opened or closed, the baffle of the damper bottom lifting device on the second damper 17 will also rise and fall in the same way.

[0053] It is worth mentioning that, in the present embodiment, when the damper is closed, the door frame drives the pushing mechanism, and the pushing mechanism pushes the pulling mechanism to lower the baffle 1. When the damper is opened, the elastic component contracts to pull the pushing mechanism to reset, and pulls the pulling mechanism to raise the baffle 1. Compared with the cylinder drive, it is more cost-effective and does not require staff control, thereby reducing the labor intensity of the staff. Secondly, by lowering the baffle 1, the bottom of the damper can be blocked when the damper is closed to prevent air leakage. Since the ground inside the mine tunnel is uneven or there are many fallen ores and soil blocks, the rising of the baffle 1 when the damper is opened will prevent the damper from being blocked, making it impossible to open the damper.

[0054] In addition, when the damper is closed, lowering the baffle 1 can play a sealing role. When the damper is opened, lifting the baffle 1 can reduce the wind pressure. When the wind pressure is reduced, the door opening resistance will also be reduced.

[0055] Furthermore, a rectangular shell 21 can be connected to the bottom of the side wall in the closing direction of the first damper 16 and the second damper 17, the interior of which is hollow and has an opening at the bottom, and a slide groove 2 is provided on the opposite side walls of the inner wall of the shell 21, and the two ends of the baffle 1 are respectively slidably connected in the slide groove 2, which can play a guiding role when the baffle 1 is raised or lowered; a first fixing plate 22 can be connected to the top of the shell 21, and the first fixing plate 22 is connected to the bottom of the side wall in the closing direction of the first damper 16 and the second damper 17 by bolts, and the side wall of the shell 21 in contact with the first damper 16 and the second damper 17 is also provided with a mounting groove 26 matching the first damper 16 and the second damper 17. In addition, a bending protrusion 29 is provided on the side wall of the shell 21 away from the first damper 16 and the second damper 17 to strengthen the overall structure so that the shell 21 is not easily deformed.

[0056] Furthermore, the pulling mechanism includes: a pulley 3 and a pull rope 4. The pulley 3 may be two and connected to the inner wall of the housing 21. The pull rope 4 is slidably connected to the pulley 3, and both ends are connected to the baffle 1. The top of the baffle 1 is provided with two grooves 5, and the grooves 5 are respectively located directly below the pulley 3. When the baffle 1 rises, the two pulleys 3 are respectively located in the two grooves 5. The pull rope 4 may be a steel wire rope.

[0057] Also, see Figure 7 It is also possible not to provide the groove 5 on the top of the baffle 1, and the pulley 3 can be installed at the upper position of the housing 21, so that the baffle 1 is pulled up and completely located in the housing 21, and contacts the bottom of the pulley 3.

[0058] The pushing mechanism includes: a guide sleeve 6, which is connected to the side wall of the housing 21 near the door frame, a push rod 7 is slidably connected in the guide sleeve 6, a linkage plate 8 is rotatably connected to the inner wall of the housing 21, and a long strip hole 10 is provided on the linkage plate 8. The end of the push rod 7 located in the housing 21 is connected to a sliding rod 11, and the sliding rod 11 is slidably connected in the long strip hole 10. A through hole is provided at the upper end of the linkage plate 8, and the pull rope 4 passes through the through hole and is connected to the baffle 1 at both ends. In addition, see Figure 7 A hinged plate 23 may also be hinged on the upper end of the linkage plate 8, and the other end of the hinged plate 23 is connected to the pull rope 4.

[0059] The elastic component can be a spring 13, one end of which is connected to the inner wall of the housing 21 through a spring hook, and the other end of which is connected to the upper end of the linkage plate 8 through a spring hook.

[0060] Furthermore, a push plate 12 is fixed to the bottom of the door frame 14 , and its position corresponds to the push rod 7 , so as to push the push rod 7 to slide in the guide sleeve 6 when the damper is closed.

[0061] See also Figure 11-13 A second fixing plate 24 is fixed at the bottom of the door frame 14. The second fixing plate 24 is provided with a mounting hole 28. The second fixing plate 24 is fixed to the bottom of the door frame 14 through bolts and the mounting hole 28. The second fixing plate 24 is fixed to the side wall away from the door frame 14 with the push plate 12. A reinforcing rib 25 is connected between the push plate 12 and the second fixing plate 24. The end of the push plate 12 away from the door frame 14 is tilted toward the direction of the push rod 7, for example, it can be tilted 10 to 20 degrees. In addition, the end of the push rod 7 that contacts the push plate 12 is a spherical structure, which can be a hemispherical or spherical structure. Through the tilted structure of the push plate 12 and the spherical structure of the end of the push rod 7, the push rod 7 is not easily damaged during the sliding process between the push plate 12 and the push plate 12, and the push rod 7 is prevented from being bent. In addition, a bending portion 27 that contacts the ground is provided at the bottom of the baffle 1.

[0062] See also Figure 1 When the damper is closed, the end of the push rod 7 outside the shell 21 will first contact the push plate 12, and the damper will continue to be closed. The push rod 7 slides inward along the guide sleeve 6, and the push rod 7 pushes the linkage plate 8 to rotate to an inclined state. After the linkage plate 8 rotates, the position of the upper end will be lowered, so that the pull rope 4 slides along the pulley 3 to lower the baffle 1. After the linkage plate 8 rotates, the spring 13 will be stretched and in an inclined state; when the damper is opened, the end of the push rod 7 outside the shell 21 will be separated from the push plate 12. At this time, the spring 13 contracts, pulling the linkage plate 8 to a vertical state, and pushing the push rod 7 to slide outward along the guide sleeve 6. When the linkage plate 8 becomes vertical, it will pull the pull rope 4, and the pull rope 4 will pull the baffle 1 up.

[0063] Furthermore, a limit plate 9 is connected to the inner wall of the housing 21 . When the spring 13 contracts and pulls the linkage plate 8 to a vertical state, the linkage plate 8 just abuts against the limit plate 9 to limit the linkage plate 8 .

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A damper bottom lifting device, characterized in that: The lifting device comprises: A baffle (1) is slidably connected to the side wall of the damper; A pulling mechanism connected to the side wall of the damper; The pulling mechanism comprises: A pulley (3) connected to the side wall of the damper; A pull rope (4) connected to the baffle (1) and also slidably connected to the pulley (3); A pushing mechanism connected to the side wall of the damper; The driving mechanism comprises: A guide sleeve (6) connected to the side wall of the damper; A push rod (7) slidably connected in the guide sleeve (6); A linkage plate (8) is rotatably connected to the side wall of the damper and is movably connected to the push rod (7); The pull rope (4) is connected to the linkage plate (8); An elastic component connected to the side wall of the damper, wherein the elastic component is connected to the linkage plate (8); When the damper is closed, the door frame drives the pushing mechanism, and the pushing mechanism is used to push the pulling mechanism to lower the baffle (1). When the damper is opened, the elastic component contracts to pull the pushing mechanism to reset, and pulls the pulling mechanism to raise the baffle (1).

2. The damper bottom lifting device according to claim 1, characterized in that: A sliding groove (2) is provided on the side wall of the damper, and the baffle (1) is slidably connected in the sliding groove (2).

3. The damper bottom lifting device according to claim 1, characterized in that: There are two pulleys (3), and both ends of the pull rope (4) are connected to the baffle (1).

4. The damper bottom lifting device according to claim 3, characterized in that: Two grooves (5) are provided on the top of the baffle (1), and the grooves (5) correspond to the positions of the pulleys (3) respectively.

5. The damper bottom lifting device according to claim 1, characterized in that: A limiting plate (9) is connected to the side wall of the damper, and after the elastic component contracts to pull the pushing mechanism to reset, the linkage plate (8) abuts against the limiting plate (9).

6. The damper bottom lifting device according to claim 1, characterized in that: The linkage plate (8) is provided with a long strip hole (10), the end of the push rod (7) is connected with a sliding rod (11), and the sliding rod (11) is slidably connected in the long strip hole (10).

7. The damper bottom lifting device according to claim 6, characterized in that: A push plate (12) is connected to the side wall of the door frame and is located corresponding to the push rod (7) for pushing the push rod (7) to lower the baffle (1) when the damper is closed.

8. The damper bottom lifting device according to any one of claims 1 to 7, characterized in that: The elastic component is a spring (13).

Images