Hydraulic automatic nut screwing-unscrewing device

A nut and automatic technology, which is applied in metal processing, metal processing equipment, manufacturing tools, etc., can solve the problems of lack of accurate pre-tightening, difficult tightening-unscrewing, high labor intensity, etc., to prolong the life of the device and reduce power The effect of loss and smooth operation

Inactive Publication Date: 2015-08-05
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The tightening and loosening of nuts is a kind of heavy manual labor, especially for large-scale equipment. The threaded connections used in them usually have a large torque, and it is difficult for workers to tighten and loosen manually. The labor intensity is high and the efficiency is low; , the bolt groups used in some high-pressure sealing equipment need the same pre-tightening force to prevent leakage, manual work can only be done based on experience, and cannot meet the requirements of precise pre-tightening

Method used

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  • Hydraulic automatic nut screwing-unscrewing device
  • Hydraulic automatic nut screwing-unscrewing device
  • Hydraulic automatic nut screwing-unscrewing device

Examples

Experimental program
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Embodiment Construction

[0047] (1) Check the sealing condition of the device, check the oil level of the oil tank 2, connect the hydraulic pump station to the power supply, start the drive motor 4, and make the first electromagnetic reversing valve 8 and the second electromagnetic reversing valve 9 both in the neutral position, empty Load operation, check the operation of the device.

[0048] (2) Start the drive motor 4, adjust the pilot relief valve 7 to set the clamping torque, so that the first electromagnetic reversing valve 8 and the second electromagnetic reversing valve 9 are in the neutral position, and the actuator three-jaw chuck 21 Place it above the nut to be tightened and loosened, and adjust the switch of the second electromagnetic reversing valve 9 to the clamping position. At this time, the hydraulic cylinder 13 drives the three-jaw chuck 21 through the telescopic movement to clamp the nut.

[0049] (3) Turn the switch of the second electromagnetic reversing valve 9 back t...

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Abstract

The invention relates to the technical field of mounting and dismounting of large-torque threads, in particular to a hydraulic automatic nut screwing-unscrewing device for solving the nut screwing and unscrewing problem in engineering equipment. The device consists of two parts of a hydraulic pump station and an execution mechanism, wherein the hydraulic pump station is driven through a motor; the execution mechanism mainly comprises a two-way plunger motor, a hydraulic cylinder and a three-jaw chuck; a nut is locked through the cooperation between the extension of the hydraulic cylinder and the three-jaw chuck; the screwing-unscrewing of the nut is realized through the rotating torque of the hydraulic motor; and the energy conversion mode of the device is electric energy-mechanical energy-hydraulic pressure energy-mechanical energy.

Description

technical field [0001] The patent of the present invention relates to the technical field of disassembly and assembly of high-torque threads, in particular to a hydraulic automatic nut tightening- [0002] The unscrewing device is used to solve the problem of tightening and loosening nuts in engineering equipment. The device is composed of a hydraulic pump station and an actuator. The hydraulic pump station is driven by a motor. The actuator mainly includes a two-way plunger motor, a hydraulic cylinder and three The claw chuck, through the expansion and contraction of the hydraulic cylinder, cooperates with the three-jaw chuck lock nut, and realizes the nut tightening and loosening through the torque of the hydraulic motor. The energy conversion mode of the device is electric energy→mechanical energy→hydraulic pressure energy→mechanical energy. Background technique [0003] The tightening and loosening of nuts is a kind of heavy manual labor, especially for large-scale equip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P19/06
CPCB23P19/06
Inventor 孔德军刘浩郭卫郭皓元
Owner CHANGZHOU UNIV
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