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Force split hydraulic screw

A hydraulic nut and force-splitting technology, applied in the field of hydraulic nuts, can solve the problems of uneven distribution of thread force and crushing, etc., and achieve the effect of safe and reliable pressing and reducing force.

Inactive Publication Date: 2009-05-06
BOHAI SHIP HEAVY IND CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of maritime transportation, the deadweight tonnage of ships is getting larger and larger. On super-large oil tankers with a deadweight tonnage of about 300,000 tons, the diameter of the rudder stock is relatively large, and the pressure when the tiller and the rudder stock are pressed reaches 1500. Under this pressure, due to the influence of manufacturing precision, the force on the thread is not evenly distributed in the entire thread range. Generally, the force on the first few thread teeth is the largest, so the local thread teeth of the rudder stock and hydraulic nut are very easy to Damage phenomena such as shearing and crushing

Method used

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  • Force split hydraulic screw
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Examples

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Embodiment

[0011] This example is the press-fitting of the rudder stock and the rudder handle, which is implemented by using two nuts as the force component hydraulic nuts, see figure 1 .

[0012] Component force hydraulic nut, including force component nut 1 and hydraulic nut 2. The force component nut 1 and the hydraulic nut 2 are installed on the threaded rod of the rudder stock 11. The force component nut 1 is an ordinary round nut, and eight blind holes 10 for installing a wrench are processed on the periphery, and the eight blind holes 10 are evenly distributed. 1 on the perimeter. The hydraulic nut 2 is composed of a hydraulic nut body and two piston rings 3 and 7. Piston ring grooves are processed at both ends of the hydraulic nut body, and eight connection holes are processed between the piston ring grooves at both ends. Connected, and communicated with the oil chamber and the oil inlet passage 6, the exhaust passage 9, there are six blind holes 5 for the wrench in the periphe...

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Abstract

The invention relates to a force component hydraulic nut, which comprises force component nut, hydraulic nut, via same screws to be mounted on same screw rod, wherein the hydraulic nut is formed by main body and two piston rings; two ends of main body are mounted with piston annular grooves while there are several connecting holes between them to connect two end annular grooves and connect oil chamber with oil channel and ventilate channel; two piston rings are mounted with grooves with sealing rings; the sealing rings are mounted in the grooves of two sealing rings; two piston rings are mounted in two end piston annular grooves of main body, while one end piston ring contacts compressor or locker, and another end piston ring contacts force component nut; the oil channel is through to the oil pump; when filling oil into oil chamber, two nuts will bear force. The invention uses two nuts as bear element, to reduce the force on local screw, without sheared and cracked conditions.

Description

technical field [0001] The invention relates to a hydraulic nut, in particular to a component force hydraulic nut for pressing. Background technique [0002] With the development of maritime transportation, the deadweight tonnage of ships is getting larger and larger. On super-large oil tankers with a deadweight tonnage of about 300,000 tons, the diameter of the rudder stock is relatively large, and the pressure when the tiller and the rudder stock are pressed reaches 1500. Under this pressure, due to the influence of manufacturing precision, the force on the thread is not evenly distributed in the entire thread range. Generally, the force on the first few thread teeth is the largest, so the local thread teeth of the rudder stock and hydraulic nut are very easy to Damage phenomena such as shearing and crushing occur. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a component type hydraulic nut for safe and reli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B25B29/02F16B37/00F16B37/06F16B39/00F16B39/22
Inventor 张玉亮赵世忠
Owner BOHAI SHIP HEAVY IND CO LTD
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