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Screw-nut transmission device for steel gate

A technology of screw nut and transmission device, which is applied in water conservancy projects, sea area engineering, coastline protection, etc. It can solve problems such as inconvenient lubricating oil, wear of the screw and nut transmission pair, and seizure of the screw and nut transmission pair. To achieve the effect of simple structure

Inactive Publication Date: 2014-09-17
JIANGSU TIANYU ENVIRONMENTAL PROTECTION GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the screw and nut transmission pair work underwater, the lubricating oil is easy to lose into the water, and it is very inconvenient to add lubricating oil underwater
The loss of lubricating oil caused premature wear of the screw and nut transmission pair, and at the same time, scum in the water easily penetrated into the nut transmission pair, resulting in the seizure between the screw rod and the nut transmission pair, making the steel gate unable to open

Method used

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  • Screw-nut transmission device for steel gate

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Embodiment Construction

[0009] A screw nut transmission device for a steel gate, comprising a screw rod 1, a sleeve 2 is arranged outside the screw rod 1, a connecting rod 3 is arranged at the lower end of the screw rod 1, and 4 sets of nuts are arranged in the inner cavity of the upper end of the connecting rod 3 Connected to the lower end of the screw rod 1, the upper end of the connecting rod 3 is provided with a flange 5 on the outer circle, the upper end of the flange 5 is provided with a gasket 6, and the upper end of the gasket 6 is provided with a pressure plate 7 and connected to the flange 5 through bolts 8; The inner cavity of the rod 3 is provided with a baffle plate 9 located at the lower end of the nut 4, and the baffle plate 9 is provided with a through hole for the threaded mandrel 1 to pass through.

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Abstract

The invention relates to a screw-nut transmission device for a steel gate. The screw-nut transmission device comprises a screw; a sleeve sleeves the screw; the lower end of the screw is provided with a connecting rod; a nut is arranged in an inner cavity at the upper end of the connecting rod and sleeves the lower end of the screw; the outer circle of the upper end of the connecting rod is provided with a flange; the upper end of the flange is provided with a sealing gasket; the upper end of the sealing gasket is provided with a pressing plate and is connected with the flange through a bolt. The screw-nut transmission device is simple in structure, scum in water can be prevented from entering the screw-nut transmission device, the seizure between the screw and the nut can be avoided, and the steel gate can be normally opened and closed.

Description

technical field [0001] The invention relates to a screw nut transmission device for a steel gate, belonging to the technical field of hydraulic engineering equipment. Background technique [0002] Steel gates are usually movable structures used to open and close water outlets in local hydraulic structures. They are generally used in dock water pump rooms, and the opening and closing actions are relatively frequent. In the traditional hidden rod steel gate, the nut is inlaid on the upper end of the steel gate body, and the working section of the screw rod of the hoist just meshes with the nut at the bottom to form a screw nut transmission pair. When the steel gate body is opened or closed, The screw drives and the nut does not move, so that the steel gate body rises or falls to realize the opening and closing action. Since the screw rod and the nut transmission pair work underwater, the lubricating oil is easily lost into the water, and it is very inconvenient to add lubrica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/36E02B7/54
Inventor 方跃飞潘庆权彭友贵
Owner JIANGSU TIANYU ENVIRONMENTAL PROTECTION GRP CO LTD
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