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Power-assisted opening device for air door at high-negative-pressure area and manufacturing method

A technology of an opening device and a manufacturing method, which is used in earth-moving drilling, ventilation of mines/tunnels, mining equipment, etc., can solve problems such as difficulty in opening the air door, achieve simple production and installation, convenient and durable use, and solve the difficulty in opening the air door. Effect

Inactive Publication Date: 2014-05-21
DAIZHUANG COALMINE OF ZIBO MINING GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to propose a technical scheme of a high-negative-pressure area damper booster opening device and manufacturing method, and adopt a simple and new damper opening booster device to solve the problem of difficult opening of the damper

Method used

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  • Power-assisted opening device for air door at high-negative-pressure area and manufacturing method
  • Power-assisted opening device for air door at high-negative-pressure area and manufacturing method
  • Power-assisted opening device for air door at high-negative-pressure area and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 , figure 2 , image 3 , a booster opening device for a damper in a high negative pressure area, installed on the high-pressure side of the damper, including an opening arm 1, a ring seat 2, and a baffle 3, the ring seat is installed on the door leaf 4 of the damper, and the baffle is installed On the door frame 5 of the damper; the opening arm is a lever with a curved elbow 1-1 at the front, and a pull ring 1-2 is arranged on the opening arm; the opening arm is hung on the On the ring seat, and can do lever rotation around the ring seat pivot point C, the top of the opening arm stretches out the door leaf and presses on the baffle plate.

[0029] The cross-sectional shape of the opening arm can be selected as a circle or a hollow circle with an outer diameter of 30 mm to 50 mm,

[0030] The distance from the rear end of the opening arm to the pull ring is 1 to 2 times the distance from the top end of the opening arm to the pull ring.

[0031] The r...

Embodiment 2

[0039] Such as Figure 5 , a manufacturing method of a booster opening device for a damper in a high negative pressure area, the manufacturing method is a manufacturing method of a booster opening device for a damper in a high negative pressure area according to claim 1, the opening arm is used on the high pressure side of the damper The lever assist method pulls the door leaf into a gap; in this embodiment, the width D of the door leaf is 1750 mm, and the width E of the door frame is 125 mm; the steps of the manufacturing method are:

[0040] a) Set the gap A=200mm where the door leaf is pulled open;

[0041] b) Determine the section size of the opening arm; the material of the opening arm is DN40 welded steel pipe, and the outer diameter of the section is 40mm;

[0042] c) After the door leaf is pulled out of the gap, the limit position of the top midpoint of the opening arm on the end surface of the door frame is the inner limit point P1, and the distance from the inner li...

Embodiment 3

[0052] Such as Figure 6 , this embodiment is an improvement made on the basis of Embodiment 1 or Embodiment 2. For the same parts in this embodiment as Embodiment 1 or Embodiment 2, please refer to the content disclosed in Embodiment 1 or Embodiment 2. It should be understood that the content disclosed in Embodiment 1 or Embodiment 2 should also be used as the content of this embodiment.

[0053] When the opening arm rotates as a lever, the rotation plane and the horizontal plane are provided with an included angle of 0°-75°.

[0054] In this embodiment, when the opening arm rotates as a lever, the rotation plane and the horizontal plane have an included angle RS of 45°; the distance BS from the projection point C of the ring seat pivot point on the door leaf plane to the edge of the door leaf is 198mm, and the door leaf When closed, the distance from the position P3 of the top midpoint of the opening arm on the door frame to the inside of the door frame ES=65mm.

[0055] T...

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Abstract

The invention relates to a power-assisted opening device for an air door at a high-negative-pressure area and a manufacturing method. The power-assisted opening device is arranged at the high-pressure side of the air door and comprises an opening arm, a ring seat and a baffle, wherein the ring seat is arranged on a door sash of the air door, and the baffle is arranged on a door frame of the air door; the opening arm is a lever with an arc-shaped elbow at the front part; a pulling ring is arranged on the opening arm; the opening arm is hung on the ring seat by the pulling ring and can do lever rotation around the ring seat, and the top end of the opening arm extends out of the door sash to press on the baffle; when the opening arm is pulled, the pulling force in opening the air door at the high-negative-pressure area is increased by utilizing the lever action. The power-assisted opening device has the beneficial effects that the manufacture and the installation are simple, the cost is low, the use is convenient and durable, and the problem of difficult opening of the air door is effectively solved.

Description

technical field [0001] The invention belongs to an auxiliary device for ventilation equipment used in underground mines, in particular to a device for assisting opening of a damper in a high negative pressure area and a manufacturing method thereof. Background technique [0002] In the mine safety production system, the ventilation system is an important subsystem. In order to facilitate underground driving and pedestrians, some connection lanes will be established between the underground air inlet and return air passages, and ventilation facilities such as dampers will be built. In a sense, the construction of the dampers is for the convenience of work and to reduce detours. Most of the dampers on the lower existing rails are manually opened wooden dampers. The pressure difference between the two sides of the dampers in the mining area or working face is relatively small, so it is easy to open and one person can easily open and close the dampers. Due to the large pressure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/10
Inventor 张洪鹏王广青刘玉德高忠国王恒何宁张景钢卞春峰
Owner DAIZHUANG COALMINE OF ZIBO MINING GROUP
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