Swing arm mechanism capable of being driven by closing power of side-hung civil air defense door

Abstract

A swing arm mechanism capable of being driven by closing power of a side-hung civil air defense door comprises a suspension frame and a swing arm, a first guide wheel is installed on the upper portion of the suspension frame through a first horizontal shaft, the swing arm is vertically installed on the lower portion of the suspension frame through a second horizontal shaft, and the length of the swing arm below the second horizontal shaft is larger than the length of the swing arm above the second horizontal shaft. Rollers are arranged at the lower ends of the swing arms; the second horizontal shaft is fixedly sleeved with a ratchet wheel, the ratchet wheel is fixedly connected with the second horizontal shaft, an elastic pawl is installed on the suspension frame, and the elastic pawl is meshed with the ratchet wheel. A pure mechanical structure is adopted, contact type triggering is adopted, the structure of the side-hung civil air defense door does not need to be changed, universality is high, and the side-hung civil air defense door has the advantage of being capable of being used repeatedly.

Description

Technical Field

[0001] The utility model belongs to the technical field of swing arm mechanisms, and in particular relates to a swing arm mechanism that can be driven by closing power of a flat-opening civil air defense door. Background Art

[0002] The civil air defense door system is a vital disaster prevention device for subway tunnels. When the tunnel is damaged by accident or floods occur, the rapid closing of the civil air defense door can effectively ensure the safety of station facilities and personnel and reduce the scope of disaster impact. However, due to the existence of the continuously erected rigid contact network, the rapid closing of the civil air defense door has become a major problem. At present, the rigid contact network at the civil air defense door in the subway line usually adopts a small anchor section layout. In an emergency, the busbar needs to be manually disassembled to close the civil air defense door, resulting in the inability to close the civil air defense door quickly. Therefore, some lines are equipped with a mechanical automatic detachment disconnection device for the busbar at the civil air defense door to achieve the rapid closing of the civil air defense door. At present, the power trigger mechanism of the device is mainly divided into motor drive and mechanical drive. The existing motor drive mechanism is costly and its reliability needs further verification. The mechanical drive mechanism needs to punch holes in the civil air defense door for connection and fixation, which will cause damage to the civil air defense door. Utility Model Content

[0003] The utility model provides a swing arm mechanism that can be driven by closing power of a swing-type civil air defense door, can realize contact triggering, improve the safety and reliability of a disconnectable device at the swing-type civil air defense door, ensure smooth closing of the civil air defense door, and at the same time has the characteristic of being reusable.

[0004] The technical solution adopted by the utility model is: a swing arm mechanism that can be driven by closing power of a swing-type civil air defense door, comprising a suspension frame and a swing arm, wherein the upper portion of the suspension frame is provided with a first guide wheel through a first horizontal axis, the lower portion of the suspension frame is vertically provided with a swing arm through a second horizontal axis, and the length of the swing arm below the second horizontal axis is greater than the length above the second horizontal axis, and a roller is provided at the lower end of the swing arm; a ratchet is fixedly mounted on the swing arm, and the ratchet is fixed to the swing arm, an elastic pawl is installed on the suspension frame, and the elastic pawl is meshed with the ratchet.

[0005] The hanging frame comprises a hanging flange, a wall panel is vertically fixed below the hanging flange, a pair of ribs are vertically fixed on one side of the wall panel, and the first horizontal axis and the second horizontal axis are fixed on the pair of ribs.

[0006] A second guide wheel is horizontally mounted on the other side of the wall panel.

[0007] The suspension frame is fixed by a suspension flange above one end of the casement-type civil air defense door that is away from the door axis after the casement-type civil air defense door is fully opened, and the roller is opposite to the inner side of the casement-type civil air defense door.

[0008] The lower end of the swing arm is bent toward the inner side of the flat-opening civil air defense door and then equipped with a roller through a U-shaped frame.

[0009] The hanging flange is provided with a plurality of waist-shaped holes.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] 1. The utility model adopts a purely mechanical structure and contact triggering, and there is no need to change the structure of the flat-opening civil air defense door. It has strong versatility and is reusable.

[0012] 2. The utility model adopts the lever principle, so that the triggering force is always greater than the contact force of the civil air defense door on the swing arm device, and the triggering speed is fast, the reliability is high, and the closing resistance of the civil air defense door is small.

[0013] 3. The utility model can effectively prevent the swing arm from reversing and affecting the closing stroke of the civil air defense door by setting a ratchet self-locking mechanism, thereby ensuring that the flat opening civil air defense door is closed in a timely and effective manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 , Figure 2 It is a schematic diagram of the structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the installation state of the utility model. DETAILED DESCRIPTION

[0016] The following is combined with Figure 1-3 The utility model is described in detail with specific implementation modes.

[0017] A swing arm mechanism that can be driven by closing power of a swing-type civil defense door includes a suspension frame 1 and a swing arm 2. The upper part of the suspension frame 1 is equipped with a first guide wheel 5 through a first horizontal axis 4, and the lower part of the suspension frame 1 is vertically equipped with a swing arm 2 through a second horizontal axis 3, and the length of the swing arm 2 below the second horizontal axis 3 is greater than the length above the second horizontal axis 3, and a roller 7 is installed at the lower end of the swing arm 2; a ratchet 6 is fixedly mounted on the swing arm 2, and the ratchet 6 is fixed to the swing arm 2, and an elastic pawl 8 is installed on the suspension frame 1, and the elastic pawl 8 is meshed with the ratchet 6.

[0018] In one embodiment, the suspension frame 1 includes a suspension flange 1-1, a wall panel 1-2 is vertically fixed below the suspension flange 1-1, a pair of rib plates 1-3 are vertically fixed on one side of the wall panel 1-2, and the first horizontal axis 4 and the second horizontal axis 3 are fixed on the pair of rib plates 1-3.

[0019] In one embodiment, a second guide wheel 9 is horizontally mounted on the other side of the wall panel 1 - 2 .

[0020] In one embodiment, the lower end of the swing arm 2 is bent toward the inner side of the civil air defense door 15 and then equipped with a roller 7 through a U-shaped frame 11.

[0021] The utility model is mainly used for controlling the mechanical automatic detachment and disconnection of the bus at the casement civil air defense door. When in use, the suspension frame 1 is suspended and fixed on the upper side of the end of the casement civil air defense door 10 away from the door axis after it is fully opened through the suspension flange 1-1, and the roller 7 is opposite to the inner side of the casement civil air defense door 10; a plurality of waist-shaped holes 1-1-1 are provided on the suspension flange 1-1, which are convenient for the installation and adjustment of the suspension frame 1 on the top of the tunnel to form a proper installation angle with the civil air defense door, and then one end of the pull wire 12 is fixedly connected to the upper end of the swing arm 2, and the pull wire 12 is passed around the first guide wheel 5 and the second guide wheel 9 in turn, and then the other end of the pull wire 12 is connected to the detachable bus wire clamp 13. When the casement civil air defense door 10 is closed, the roller 7 pushes the lower end of the swing arm 2 to rotate upward and pass over the top of the casement civil air defense door 10, so that the upper end of the swing arm 2 drives the pull wire to move, causing the detachable bus wire clamp 13 to fall off, and the detachable wire clamp is separated by the swing arm mechanism, so that the two independent small anchor section buses rotate rapidly around their respective rotation points and fall to a vertical state, making room for the closing of the civil air defense door, realizing the rapid closing of the civil air defense door, and realizing the mechanical and automatic detachment and disconnection of the bus at the civil air defense door, which can be reused.

[0022] Moreover, after the civil defense door 10 is closed and pushes the swing arm 2 to rotate upward, the elastic pawl 8 engages with the ratchet 6 to prevent the ratchet 6 from reversing, thereby preventing the swing arm from reversing and falling to the closing area of ​​the civil defense door, affecting the closing stroke of the civil defense door.

[0023] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A swing arm mechanism that can be driven by the closing power of a flat-opening civil air defense door, characterized in that: The invention comprises a suspension frame (1) and a swing arm (2); the upper part of the suspension frame (1) is provided with a first guide wheel (5) through a first horizontal axis (4); the lower part of the suspension frame (1) is provided with a swing arm (2) vertically through a second horizontal axis (3); the length of the swing arm (2) below the second horizontal axis (3) is greater than the length above the second horizontal axis (3); a roller (7) is provided at the lower end of the swing arm (2); a ratchet (6) is fixedly mounted on the swing arm (2), and the ratchet (6) is fixedly connected to the swing arm (2); an elastic ratchet (8) is provided on the suspension frame (1), and the elastic ratchet (8) is meshed with the ratchet (6).

2. The swing arm mechanism that can be driven by the closing power of the flat-opening civil air defense door according to claim 1 is characterized in that: The suspension frame (1) comprises a suspension flange (1-1), a wall panel (1-2) is vertically fixed below the suspension flange (1-1), a pair of rib plates (1-3) are vertically fixed to one side of the wall panel (1-2), and the first horizontal axis (4) and the second horizontal axis (3) are fixed on the pair of rib plates (1-3).

3. The swing arm mechanism that can be driven by the closing power of the flat-opening civil air defense door according to claim 2 is characterized in that: A second guide wheel (9) is horizontally mounted on the other side of the wall panel (1-2).

4. The swing arm mechanism that can be driven by the closing power of the flat-opening civil air defense door according to claim 2 or 3 is characterized in that: The suspension frame (1) is suspended and fixed via a suspension flange (1-1) above one end of the swing-type civil air defense door (10) away from the door axis after the door is fully opened, and the roller (7) is opposite to the inner side of the swing-type civil air defense door (10).

5. The swing arm mechanism that can be driven by the closing power of the flat-opening civil air defense door according to claim 4 is characterized in that: The lower end of the swing arm (2) is bent toward the inner side of the flat-opening civil air defense door (10) and is equipped with a roller (7) via a U-shaped frame (11).

6. The swing arm mechanism that can be driven by the closing power of the flat-opening civil air defense door according to claim 5 is characterized in that: The hanging flange (1-1) is provided with a plurality of waist-shaped holes (1-1-1).

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