Power assisting device for opening air door

Abstract

The utility model discloses an air door opening power assisting device, which relates to the technical field of air door power assisting equipment and comprises a door frame, an air door is rotatably connected in the door frame, a sleeve is fixedly connected on the door frame, a connecting shaft is rotatably connected in the sleeve, a handle is fixedly connected at one end of the connecting shaft, a push plate is fixedly connected at the other end of the connecting shaft, and the push plate contacts with the air door and opens the air door when rotating. A gear is fixedly connected to the connecting shaft and is in transmission connection with a rack, the rack is in sliding connection with the door frame, the bottom of the rack is in transmission connection with a pedal, the pedal is in sliding connection with a fixing block, and the fixing block is fixedly connected with the bottom of the door frame. The air door opening device is simple in structure and convenient to use, the air door can be opened in the mode that the handle is held by hands or the pedal is stepped by feet, practicability of the device is greatly improved, the air door can be easily opened even if objects exist on the hands, time and labor are saved, and working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air door boosting equipment, in particular to an air door opening boosting device. Background Technique

[0002] In the mine safety production system, the ventilation system is an important subsystem. To facilitate underground vehicle travel and pedestrian passage, some connecting lanes will be built between the underground intake airway and the return airway, and ventilation facilities such as air doors will be constructed. The construction of air doors is, in a sense, for work convenience and to reduce detours.

[0003] Most of the existing track air doors in the mine are wooden air doors opened manually. For the air doors in the mining area or working face, since the pressure difference on both sides of the air door is relatively small, they are mostly relatively easy to open, and one person can easily open and close the air door. However, for the air doors built between the connecting lanes of the main intake and return airways in the mine, such as the inspection inclined lane, the horizontal cleaning chamber and other locations, due to the large pressure difference on both sides of the air door, it is difficult to open, which brings a lot of inconvenience to daily work.

[0004] The design of the existing boosting equipment usually adopts the lever principle, and the air door can be easily opened by pulling the handle with hand. However, sometimes it is not convenient to pull the handle when holding something in the hand, and it is necessary to ask others for help or put down the item and then carry it after opening, which is very inconvenient to use.

[0005] Therefore, the utility model provides an air door opening boosting device to solve the problems existing in the above-mentioned prior art. Content of the Utility Model

[0006] To achieve the above object, the utility model provides the following scheme: The utility model provides an air door opening boosting device, including a door frame, an air door is rotatably connected inside the door frame, a sleeve is fixedly connected to the door frame, a connecting shaft is rotatably connected inside the sleeve, a handle is fixedly connected to one end of the connecting shaft, a push plate is fixedly connected to the other end of the connecting shaft, when the push plate rotates, it contacts the air door and opens the air door, a gear is fixedly connected to the connecting shaft, the gear is in transmission connection with a rack, the rack is slidably connected to the door frame, the bottom of the rack is in transmission connection with a pedal, the pedal is slidably connected to a fixed block, and the fixed block is fixedly connected to the bottom of the door frame.

[0007] Preferably, sliding grooves are symmetrically opened on both sides of the fixed block, a connecting plate is slidably connected inside the sliding grooves, any one of the connecting plates is fixedly connected to the pedal, the other connecting plate is fixedly connected to the bottom of the rack, and a sliding plate is fixedly connected between the two connecting plates. The sliding plate is located inside the fixed block and is slidably connected to the fixed block.

[0008] Preferably, a groove is opened inside the fixed block, the sliding plate is located inside the groove and is slidably connected to the groove, a spring is fixedly connected to the bottom surface of the groove, and the top of the spring is fixedly connected to the sliding plate.

[0009] Preferably, a strip groove is formed in the door frame, the rack is located in the strip groove and is slidably connected with the strip groove, and the gear extends into the strip groove and meshes with the rack.

[0010] Preferably, a notch is provided at the top of the push plate, and a roller is rotatably connected in the notch. The roller is used to contact the air door and open the air door.

[0011] Preferably, an annular groove is formed in the sleeve, and an annular plate is rotatably connected in the annular groove. The connecting shaft penetrates through the annular plate and is fixedly connected with the annular plate.

[0012] Preferably, a handle is fixedly connected to the air door.

[0013] The utility model discloses the following technical effects: when there is no object in the hand, hold the handle with the hand and pull it outwards. The handle drives the connecting shaft to rotate, the connecting shaft drives the push plate to rotate towards the air door, and after the push plate contacts the air door, it pushes the air door open. The connecting shaft plays a lever role, and the boosting effect is good, which is convenient to easily open the air door. After the air door opens a gap, the pressure on both sides is balanced, and at this time, the air door can be completely pushed open; when there is an object in the hand, the pedal can be stepped on with the foot. The pedal moves downward along the fixed block, and the movement of the pedal drives the rack to move downward. When the rack moves, the gear rotates, the gear drives the connecting shaft to rotate, and the connecting shaft drives the push plate to rotate, thereby opening the air door, saving time, and the air door can be opened without using hands, improving work efficiency. The utility model can open the air door by pulling the handle with the hand or stepping on the pedal with the foot, greatly improving the practicability of the device. Even if there is an object in the hand, the air door can be easily opened, saving time and effort and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings constituting a part of this application are used to provide a further understanding of this application. The schematic embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation to this application. In the drawings:

[0015] Figure 1 is a schematic structural diagram of the air door opening boosting device of the utility model;

[0016] Figure 2 is a top cross-sectional view of the fixed block in the air door opening boosting device of the utility model;

[0017] Figure 3 is a main cross-sectional view of the fixed block in the air door opening boosting device of the utility model;

[0018] Figure 4 is a side cross-sectional view of the sleeve in the air door opening boosting device of the utility model;

[0019] In the figure: 1, door frame; 2, air door; 3, handle; 4, pedal; 5, chute; 6, handle; 7, connecting shaft; 8, sleeve; 9, gear; 10, rack; 11, strip groove; 12, push plate; 13, roller; 14, fixed block; 15, sliding plate; 16, groove; 17, connecting plate; 18, spring; 19, annular plate; 20, annular groove. Specific embodiments

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Refer to Figures 1-4 As shown, this embodiment provides an air door opening assistance device, including a door frame 1. An air door 2 is rotatably connected inside the door frame 1. A sleeve 8 is fixedly connected to the door frame 1. A connecting shaft 7 is rotatably connected inside the sleeve 8. One end of the connecting shaft 7 is fixedly connected with a handle 6, and the other end of the connecting shaft 7 is fixedly connected with a push plate 12. When the push plate 12 rotates, it contacts the air door 2 and opens the air door 2. A gear 9 is fixedly connected to the connecting shaft 7. The gear 9 is drivingly connected with a rack 10. The rack 10 is slidably connected to the door frame 1. The bottom of the rack 10 is drivingly connected with a pedal 4. The pedal 4 is slidably connected with a fixed block 14. The fixed block 14 is fixedly connected to the bottom of the door frame 1.

[0023] When there are no items in the hand, hold the handle 6 with the hand and pull it outwards. The handle 6 drives the connecting shaft 7 to rotate. The connecting shaft 7 drives the push plate 12 to rotate towards the air door 2. After the push plate 12 contacts the air door 2, it pushes it open. The connecting shaft 7 plays a lever role, with good assistance effect, facilitating the easy opening of the air door 2. After the air door 2 opens a gap, the pressure on both sides is balanced. At this time, the air door 2 can be fully pushed open; when there are items in the hand, the foot can be stepped on the pedal 4. The pedal 4 moves downward along the fixed block 14. The movement of the pedal 4 drives the rack 10 to move downward. When the rack 10 moves, the gear 9 rotates. The gear 9 drives the connecting shaft 7 to rotate. The connecting shaft 7 drives the push plate 12 to rotate, thereby opening the air door 2, saving time, and opening the air door 2 without using hands, improving work efficiency. The structure of the present invention is simple and easy to use. The air door 2 can be opened by pulling the handle 6 with the hand or stepping on the pedal 4 with the foot, greatly improving the practicality of the device. Even when there are items in the hand, the air door 2 can be easily opened, saving time and effort and improving work efficiency.

[0024] For a further optimized solution, sliding grooves 5 are symmetrically formed on both sides of the fixed block 14. A connecting plate 17 is slidably connected in the sliding groove 5. One connecting plate 17 is fixedly connected to the pedal 4, and the other connecting plate 17 is fixedly connected to the bottom of the rack 10. A sliding plate 15 is fixedly connected between the two connecting plates 17. The sliding plate 15 is located inside the fixed block 14 and is slidably connected to the fixed block 14. After stepping on the pedal 4, it drives the connecting plate 17 to move downward along the sliding groove 5. The connecting plate 17 drives the sliding plate 15 to move downward. The sliding plate 15 drives the connecting plate 17 on the other side to move downward. The connecting plate 17 on the other side drives the rack 10 to move downward, thereby driving the gear 9 to rotate and then opening the air damper 2. The operation is simple and convenient.

[0025] For a further optimized solution, a groove 16 is formed inside the fixed block 14. The sliding plate 15 is located inside the groove 16 and is slidably connected to the groove 16. A spring 18 is fixedly connected to the bottom surface of the groove 16, and the top of the spring 18 is fixedly connected to the sliding plate 15. When the pedal 4 moves downward, it drives the sliding plate 15 to slide inside the groove 16 and compresses the spring 18. When the foot leaves the pedal 4 after the air damper 2 is opened, the air damper 2 can be fully opened. At this time, under the reaction force of the spring 18, the pedal 4, the gear 9 and the rack 10 are reset, and the push plate 12 is in a vertical position, which is convenient for the next use.

[0026] For a further optimized solution, a strip-shaped groove 11 is formed on the door frame 1. The rack 10 is located inside the strip-shaped groove 11 and is slidably connected to the strip-shaped groove 11. The gear 9 extends into the strip-shaped groove 11 and meshes with the rack 10. The strip-shaped groove 11 limits the rack 10 so that it can only slide along the strip-shaped groove 11 and will not shift laterally, ensuring a good transmission effect.

[0027] For a further optimized solution, a notch is provided at the top of the push plate 12. A roller 13 is rotatably connected inside the notch. The roller 13 is used to contact the air damper 2 and open the air damper 2. When the push plate 12 rotates, it drives the roller 13 to rotate. The roller 13 is located at the top end of the push plate 12. Therefore, the roller 13 contacts the air damper 2 first. When the roller 13 pushes the air damper 2, it rolls along the panel of the air damper 2. The setting of the roller 13 reduces the friction generated when contacting the air damper 2, making it more smooth to use.

[0028] For a further optimized solution, an annular groove 20 is formed inside the sleeve 8. An annular plate 19 is rotatably connected inside the annular groove 20. The connecting shaft 7 passes through the annular plate 19 and is fixedly connected to the annular plate 19. When the connecting shaft 7 rotates, it drives the annular plate 19 to rotate inside the annular groove 20. The annular plate 19 and the annular groove 20 limit the connecting shaft 7 to prevent horizontal displacement and affect normal use.

[0029] For a further optimized solution, a handle 3 is fixedly connected to the air damper 2. After opening a gap of the air damper 2, pushing the handle 3 can fully open the air damper 2.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0031] The embodiments described above are only descriptions of the preferred modes of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit of the present utility model, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present utility model shall fall within the protection scope determined by the claims of the present utility model.

Claims

1. The air door opening assist device is characterized by: The invention comprises a door frame (1), wherein a damper (2) is rotatably connected inside the door frame (1), a sleeve (8) is fixedly connected to the door frame (1), a connecting shaft (7) is rotatably connected inside the sleeve (8), a handle (6) is fixedly connected to one end of the connecting shaft (7), a push plate (12) is fixedly connected to the other end of the connecting shaft (7), the push plate (12) contacts the damper (2) and opens the damper (2) when the push plate (12) rotates, a gear (9) is fixedly connected to the connecting shaft (7), the gear (9) is transmission-connected to a rack (10), the rack (10) is slidably connected to the door frame (1), the bottom of the rack (10) is transmission-connected to a pedal (4), the pedal (4) is slidably connected to a fixed block (14), and the fixed block (14) is fixedly connected to the bottom of the door frame (1).

2. The damper opening assist device according to claim 1, characterized in that: The fixed block (14) is symmetrically provided with sliding grooves (5) on both sides, and a connecting plate (17) is slidably connected in the sliding groove (5), any one of the connecting plates (17) is fixedly connected to the pedal (4), and the other connecting plate (17) is fixedly connected to the bottom of the rack (10), and a sliding plate (15) is fixedly connected between the two connecting plates (17), and the sliding plate (15) is located in the fixed block (14) and is slidably connected to the fixed block (14).

3. The damper opening assist device according to claim 2, characterized in that: A groove (16) is provided in the fixed block (14), the sliding plate (15) is located in the groove (16) and is slidably connected to the groove (16), a spring (18) is fixedly connected to the bottom surface of the groove (16), and the top of the spring (18) is fixedly connected to the sliding plate (15).

4. The damper opening assist device according to claim 1, characterized in that: The door frame (1) is provided with a strip groove (11), the rack (10) is located in the strip groove (11) and is slidably connected to the strip groove (11), and the gear (9) extends into the strip groove (11) and meshes with the rack (10).

5. The damper opening assist device according to claim 1, characterized in that: A notch is provided at the top of the push plate (12), and a roller (13) is rotatably connected in the notch. The roller (13) is used to contact the damper (2) and open the damper (2).

6. The damper opening assist device according to claim 1, characterized in that: An annular groove (20) is provided in the sleeve (8), an annular plate (19) is rotatably connected in the annular groove (20), and the connecting shaft (7) passes through the annular plate (19) and is fixedly connected to the annular plate (19).

7. The damper opening assist device according to claim 1, characterized in that: A handle (3) is fixedly connected to the damper (2).

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