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Secondary opening door hook

A technology for secondary opening and opening of holes, which is applied in the direction of building fastening devices, wing fan fastening devices, buildings, etc. High, long service life, easy to install and maintain

Active Publication Date: 2017-06-06
山东清源冷暖设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the boiler is working, there is a large pressure difference inside and outside the boiler, so it is very dangerous to directly open the opening door of the boiler coal inlet, and in severe cases, it will cause injury to the operator.

Method used

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  • Secondary opening door hook
  • Secondary opening door hook
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Examples

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Embodiment Construction

[0020] Such as figure 1 As shown, a door hook for secondary opening includes a spherical handle cover 1 and a hook body. The upper part of the hook body is a handle 2, and the lower part is a hook 3. A shaft hole 4 is provided at the position where the handle 2 and the hook 3 are connected. A spherical handle cover 1 is installed on the top of the handle 2, which saves effort when the switch opens the door for the second time, and the right heat insulation is convenient for operation. The hook 3 has two hook heads, namely an upper hook head 31 and a lower hook head 32. The position of the upper hook head 31 is higher than the lower hook head 32, and a section of opening hole 5 is arranged between the upper hook head 31 and the lower hook head 32. The upper hook head 31 is designed as a "u" shape, and a raised portion 312 is provided on the inside of the front end to prevent the fixed shaft 6 from slipping out of the upper hook head 31. A concave groove 313 is provided at the b...

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Abstract

The invention relates to a secondary opening door hook. The secondary opening door hook comprises a spherical handle sleeve and a hook body, wherein a handle is arranged at the upper part of the hook body; a hook is arranged at the lower part of the hook body; a shaft hole is formed in a connection part of the handle and the hook. The plastic spherical handle sleeve is mounted at the top end of the handle, so that the effects of saving labor and insulating heat are achieved when a secondary opening door is opened and closed, and the secondary opening door is convenient to operate. The hook is provided with two hook heads namely an upper hook head and a lower hook head, the position of the upper hook head is higher than that of the lower hook head, and a section of opening hole is formed between the upper hook head and the lower hook head. The secondary opening door hook has the beneficial effects of being simple in structure, easy to manufacture, convenient to use, high in safety, long in service life and convenient to mount and maintain. The secondary opening door is enabled to have a secondary opening function.

Description

[0001] Technical field: [0002] The invention relates to a secondary opening door hook, which is an important part of the secondary opening door of a boiler coal filling port and belongs to the technical field of boiler manufacturing equipment. [0003] Background technique: [0004] At present, the known opening door used for the boiler coal filling port is a one-time opening door. When coal needs to be added, the opening door of the boiler coal filling port is opened first, and then coal is added in the coal storage bin of the boiler. When the boiler is working, there is a large pressure difference inside and outside the boiler, so it is very dangerous to directly open the opening door of the boiler coal filling port, and in severe cases, it will cause injury to the opening personnel. In order to prevent dangerous accidents from directly opening the opening door of the boiler coal opening, the boiler industry is in urgent need of a boiler opening door with a secondary openin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E05C19/12
Inventor 王峰季涛孙铁柱王义扩靳金钢张延林王恩科
Owner 山东清源冷暖设备有限公司
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