CN104816151A - Hydraulic automatic nut screwing-unscrewing device - Google Patents
Hydraulic automatic nut screwing-unscrewing device Download PDFInfo
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- CN104816151A CN104816151A CN201510095316.8A CN201510095316A CN104816151A CN 104816151 A CN104816151 A CN 104816151A CN 201510095316 A CN201510095316 A CN 201510095316A CN 104816151 A CN104816151 A CN 104816151A
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- hydraulic
- solenoid directional
- directional control
- control valve
- fuel tank
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
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
Patent of the present invention relates to the dismounting technical field of high pulling torque screw thread, refer in particular to a kind of hydraulic pressure automatic nut to tighten-
Loosing device, for solving tightening and unscrewing problem of nut in engineering equipment, device is made up of hydraulic power unit and executing agency's two parts, hydraulic power unit is driven by motor, executing agency mainly comprises bidirectional ram motor, hydraulic cylinder and scroll chuck, coordinate scroll chuck locking nut by hydraulic cylinder extension, realize nut screwing clamping-unscrew by hydraulic motor turning moment, the power conversion mode of device is electric energy → mechanical energy → fluid pressure energy → mechanical energy.
Background technology
Tightening-unscrewing of nut is a kind of heavy manual labor, especially main equipment, and what they used is threaded usual moment of torsion all very greatly, and workman's manual work mode is difficult to realization and tightens-unscrew, and labour intensity is large, and efficiency is low; In addition, some high pressure sealing equipment bolt group used needs identical pretightning force to prevent from revealing, and handwork can only complete by rule of thumb, does not reach the requirement of accurate pretension.The method of design hydraulic pressure realizes the dismounting of high pulling torque screw thread, and accurately can control pretightning force, both improves working condition, and improves efficiency, and also achieved and better connect effect.
Summary of the invention
Described device is made up of hydraulic power unit and executing agency's two parts, each several part composition and annexation as follows:
Hydraulic power unit comprises fuel tank, hydraulic pump, the first solenoid directional control valve, the second solenoid directional control valve, the first hydraulic control one-way valve and the second hydraulic control one-way valve; Fuel tank is connected with hydraulic pump by pipeline, hydraulic pump is connected with the first solenoid directional control valve by pipeline, first solenoid directional control valve is connected with the second solenoid directional control valve by pipeline, and the second solenoid directional control valve is connected with the first hydraulic control one-way valve, the second hydraulic control one-way valve and fuel tank respectively; Executing agency comprises scroll chuck, hydraulic cylinder and bidirectional ram motor, and scroll chuck is arranged on hydraulic cylinder, and hydraulic cylinder is fixed on bidirectional ram motor, and the first hydraulic control one-way valve is connected with the rod chamber of hydraulic cylinder; Second hydraulic control one-way valve is connected with the rodless cavity of hydraulic cylinder; Bidirectional ram motor and the first solenoid directional control valve are connected to form loop.
Further, the pipeline be connected with hydraulic pump at fuel tank is provided with oil absorption filter screen.
Further, fuel tank is provided with liquid level gauge.
Further, hydraulic pump is connected with drive motors by shaft coupling.
Further, the pipeline that hydraulic pump is connected with the first solenoid directional control valve is provided with Pressure gauge.
Further, pilot operated compound relief valve is provided with between the pipeline that the pipeline that is connected with the first solenoid directional control valve of hydraulic pump and the second solenoid directional control valve are connected with fuel tank.
Described hydraulic power unit also comprises top board, support bar; Be provided with support bar between top board and fuel tank, be also provided with drive motors, shaft coupling and hydraulic pump from top to bottom, hydraulic pump is connected with drive motors by shaft coupling; Tank surface is provided with reversal valve switch, Pressure gauge, overflow valve switch, reversal valve switch and motor switch.
This device can realize binding nut-tighten-unclamp nut and binding nut-unscrewing-unclamp nut two overlaps action.
(1) binding nut-tighten-unclamp nut
As shown in Figure 1, binding nut:
In-line: the rodless cavity of the left position → the second hydraulic control one-way valve → hydraulic cylinder of fuel tank → oil absorption filter screen → the first solenoid directional control valve meta → the second solenoid directional control valve.
Oil return line: the left position → fuel tank of rod chamber → the first hydraulic control one-way valve → the second solenoid directional control valve of hydraulic cylinder.
Tighten:
In-line: fuel tank → oil absorption filter screen → the first solenoid directional control valve left position → bidirectional ram motor.
Oil return line: the left position → the second solenoid directional control valve meta → fuel tank of bidirectional ram motor → the first solenoid directional control valve.
Unclamp nut:
In-line: the rod chamber of the right position → the first hydraulic control one-way valve → hydraulic cylinder of fuel tank → oil absorption filter screen → the first solenoid directional control valve meta → the second solenoid directional control valve.
Oil return line: the right position → fuel tank of hydraulic cylinder rodless cavity → the second hydraulic control one-way valve → the second solenoid directional control valve.
(2) binding nut-unscrew-unclamp nut
Binding nut:
In-line: the rodless cavity of the left position → the second hydraulic control one-way valve → hydraulic cylinder of fuel tank → oil absorption filter screen → the first solenoid directional control valve meta → the second solenoid directional control valve.
Oil return line: the left position → fuel tank of rod chamber → the first hydraulic control one-way valve → the second solenoid directional control valve of hydraulic cylinder.
Unscrew:
In-line: fuel tank → oil absorption filter screen → the first solenoid directional control valve right position → bidirectional ram motor.
Oil return line: the right position → the second solenoid directional control valve meta → fuel tank of bidirectional ram motor → the first solenoid directional control valve.
Unclamp nut:
In-line: the rod chamber of the right position → the first hydraulic control one-way valve → hydraulic cylinder of fuel tank → oil absorption filter screen → the first solenoid directional control valve meta → the second solenoid directional control valve.
Oil return line: the right position → fuel tank of hydraulic cylinder rodless cavity → the second hydraulic control one-way valve → the second solenoid directional control valve.
This device is made up of hydraulic power unit in Fig. 2 and Tu3Zhong executing agency, and control section is integrated on hydraulic power unit.
this device major technique advantage
(1) adopt low speed hydraulic motor to obtain larger output torque, adopt reversal valve and reversing motor to realize tightening and unscrewing.
(2) using scroll chuck formula clamping device, different size nut can being clamped, without the need to changing nut sleeve by adjustment.
(3) by hydraulic power unit and control system integration, long-range accurate control is realized, for realizing automatically controlling to provide the foundation.
(4) adopt stepless voltage regulation loop to achieve continuous, the pro rata adjustment of system pressure, pressure switches steadily.
(5) utilize the Median Function of reversal valve to make hydraulic pump off-load, reduce power attenuation, reduce device heating, the extension fixture life-span.
(6) device is noiseless, operates steadily, and impacts, noise is little.
Accompanying drawing explanation
Fig. 1 is hydraulic principle figure.
1-liquid level gauge; 2-fuel tank; 3-oil absorption filter screen; 4-drive motors; 5-hydraulic pump; 6-Pressure gauge; 7-pilot operated compound relief valve; 8-first solenoid directional control valve; 9-second solenoid directional control valve; 10-bidirectional ram motor; 11-first hydraulic control one-way valve; 12-second hydraulic control one-way valve; 13-hydraulic cylinder.
Fig. 2 hydraulic pump station structure schematic diagram.
2-fuel tank; 5-hydraulic pump; 14-shaft coupling; 4-drive motors; 15-support bar; 16-top board; 17-reversal valve switch; 6-Pressure gauge; 18-overflow valve switch; 19-reversal valve switch; 20-motor switch.
Fig. 3 executing agency structural representation.
21-scroll chuck; 13-hydraulic cylinder; 10-bidirectional ram motor.
Detailed description of the invention
(1) testing fixture sealing situation, checks the oil level of fuel tank 2, is switched on power by hydraulic power unit, starts drive motors 4, makes the first solenoid directional control valve 8 and the second solenoid directional control valve 9 all be in meta, no-load running, testing fixture ruuning situation.
(2) drive motors 4 is started, pilot operated compound relief valve 7 is regulated to set clamping torque, the first solenoid directional control valve 8 and the second solenoid directional control valve 9 is made all to be in meta, executing agency's scroll chuck 21 is placed in above the nut that will tighten-unscrew, the switch of the second solenoid directional control valve 9 is adjusted to clamping position, now, hydraulic cylinder 13 drives scroll chuck 21 that nut is clamped by stretching motion.
(3) the second solenoid directional control valve 9 switch is reversed meta, now, system makes nut maintain the lock status by two hydraulic control one-way valve locking loops, regulate pilot operated compound relief valve 7 to the required moment of tightening or unscrewing, the switch of the first solenoid directional control valve 8 is allocated to left position or right position, drive bidirectional ram motor 10 rotates with the moment of definite value by pressure oil, realizes tightening or unscrewing of nut.
(4) the first solenoid directional control valve 8 switch is reversed meta, the switch of the second solenoid directional control valve 9 is adjusted to right position, and now, hydraulic cylinder 13 drives scroll chuck 21 to be unclamped by nut.
(5) make the first solenoid directional control valve 8 and the second solenoid directional control valve 9 all be in meta, make system unloaded, executing agency is regained, close drive motors 4.
Claims (8)
1. a hydraulic pressure automatic nut tightens-loosing device, it is characterized in that: described device is made up of hydraulic power unit and executing agency's two parts, each several part composition and annexation as follows: hydraulic power unit comprises fuel tank, hydraulic pump, the first solenoid directional control valve, the second solenoid directional control valve, the first hydraulic control one-way valve and the second hydraulic control one-way valve; Fuel tank is connected with hydraulic pump by pipeline, hydraulic pump is connected with the first solenoid directional control valve by pipeline, first solenoid directional control valve is connected with the second solenoid directional control valve by pipeline, and the second solenoid directional control valve is connected with the first hydraulic control one-way valve, the second hydraulic control one-way valve and fuel tank respectively; Executing agency comprises scroll chuck, hydraulic cylinder and bidirectional ram motor, and scroll chuck is arranged on hydraulic cylinder, and hydraulic cylinder is fixed on bidirectional ram motor, and the first hydraulic control one-way valve is connected with the rod chamber of hydraulic cylinder; Second hydraulic control one-way valve is connected with the rodless cavity of hydraulic cylinder; Bidirectional ram motor and the first solenoid directional control valve are connected to form loop.
2. a kind of hydraulic pressure automatic nut as claimed in claim 1 tightens-loosing device, it is characterized in that: on the pipeline that fuel tank is connected with hydraulic pump, be provided with oil absorption filter screen; Fuel tank is provided with liquid level gauge.
3. a kind of hydraulic pressure automatic nut as claimed in claim 1 tightens-loosing device, it is characterized in that: hydraulic pump is connected with drive motors by shaft coupling.
4. a kind of hydraulic pressure automatic nut as claimed in claim 1 tightens-loosing device, it is characterized in that: the pipeline that hydraulic pump is connected with the first solenoid directional control valve is provided with Pressure gauge.
5. a kind of hydraulic pressure automatic nut as claimed in claim 1 tightens-loosing device, it is characterized in that: be provided with pilot operated compound relief valve between the pipeline that the pipeline that hydraulic pump is connected with the first solenoid directional control valve and the second solenoid directional control valve are connected with fuel tank.
6. a kind of hydraulic pressure automatic nut as claimed in claim 1 tightens-loosing device, it is characterized in that: described hydraulic power unit also comprises top board, support bar; Be provided with support bar between top board and fuel tank, be also provided with drive motors, shaft coupling and hydraulic pump from top to bottom, hydraulic pump is connected with drive motors by shaft coupling; Tank surface is provided with reversal valve switch, Pressure gauge, overflow valve switch, reversal valve switch and motor switch.
7. a kind of hydraulic pressure automatic nut as claimed in claim 1 tightens-loosing device, it is characterized in that: the oil circuit of the binding nut of described device-tighten-unclamp nut action is respectively;
Binding nut:
In-line: the rodless cavity of the left position → the second hydraulic control one-way valve → hydraulic cylinder of fuel tank → oil absorption filter screen → the first solenoid directional control valve meta → the second solenoid directional control valve;
Oil return line: the left position → fuel tank of rod chamber → the first hydraulic control one-way valve → the second solenoid directional control valve of hydraulic cylinder;
Tighten:
In-line: fuel tank → oil absorption filter screen → the first solenoid directional control valve left position → bidirectional ram motor;
Oil return line: the left position → the second solenoid directional control valve meta → fuel tank of bidirectional ram motor → the first solenoid directional control valve;
Unclamp nut:
In-line: the rod chamber of the right position → the first hydraulic control one-way valve → hydraulic cylinder of fuel tank → oil absorption filter screen → the first solenoid directional control valve meta → the second solenoid directional control valve;
Oil return line: the right position → fuel tank of hydraulic cylinder rodless cavity → the second hydraulic control one-way valve → the second solenoid directional control valve.
8. a kind of hydraulic pressure automatic nut as claimed in claim 1 tightens-loosing device, it is characterized in that: the oil circuit of the binding nut of described device-unscrew-unclamp nut action is respectively;
Binding nut:
In-line: the rodless cavity of the left position → the second hydraulic control one-way valve → hydraulic cylinder of fuel tank → oil absorption filter screen → the first solenoid directional control valve meta → the second solenoid directional control valve;
Oil return line: the left position → fuel tank of rod chamber → the first hydraulic control one-way valve → the second solenoid directional control valve of hydraulic cylinder;
Unscrew:
In-line: fuel tank → oil absorption filter screen → the first solenoid directional control valve right position → bidirectional ram motor;
Oil return line: the right position → the second solenoid directional control valve meta → fuel tank of bidirectional ram motor → the first solenoid directional control valve;
Unclamp nut:
In-line: the rod chamber of the right position → the first hydraulic control one-way valve → hydraulic cylinder of fuel tank → oil absorption filter screen → the first solenoid directional control valve meta → the second solenoid directional control valve;
Oil return line: the right position → fuel tank of hydraulic cylinder rodless cavity → the second hydraulic control one-way valve → the second solenoid directional control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510095316.8A CN104816151A (en) | 2015-03-04 | 2015-03-04 | Hydraulic automatic nut screwing-unscrewing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510095316.8A CN104816151A (en) | 2015-03-04 | 2015-03-04 | Hydraulic automatic nut screwing-unscrewing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104816151A true CN104816151A (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510095316.8A Pending CN104816151A (en) | 2015-03-04 | 2015-03-04 | Hydraulic automatic nut screwing-unscrewing device |
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| Country | Link |
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| CN (1) | CN104816151A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107028213A (en) * | 2017-05-09 | 2017-08-11 | 李宗恩 | A kind of electromagnet-friction fastening relaxation device of bulking machine |
| CN108278239A (en) * | 2018-04-28 | 2018-07-13 | 北京博望盛达商贸有限公司 | Effectively reduce the Full automatic bus lift frame hydraulic system of return oil pressure |
| CN108591190A (en) * | 2018-04-28 | 2018-09-28 | 北京博望盛达商贸有限公司 | Convenient for the Full automatic bus lift frame hydraulic system of control mode |
| CN108591191A (en) * | 2018-04-28 | 2018-09-28 | 北京博望盛达商贸有限公司 | Realize energy-efficient full-automatic anode busbar jacking frame hydraulic system |
| CN115008171A (en) * | 2022-04-21 | 2022-09-06 | 国网湖南省电力有限公司 | Self-adaptive bolt tightening tool |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS61136740A (en) * | 1984-12-03 | 1986-06-24 | Fujitsu Ten Ltd | Press-fitting machine |
| CN2500435Y (en) * | 2001-07-12 | 2002-07-17 | 韩忠 | Hydraulic tool |
| CN201175824Y (en) * | 2008-01-29 | 2009-01-07 | 安康水力发电厂 | Full automatic hydraulic disassembly system of gate arm |
| CN201198084Y (en) * | 2008-03-21 | 2009-02-25 | 林祥治 | Control system for rotating part of torque machine |
| CN202448078U (en) * | 2012-02-20 | 2012-09-26 | 重庆运达科技有限公司 | Internal combustion hydraulic bolt spanner for railway |
| CN203390519U (en) * | 2013-08-29 | 2014-01-15 | 宁波欣特机械有限公司 | Automatic pump for hydraulic wrench |
| CN203426669U (en) * | 2013-08-19 | 2014-02-12 | 侯博超 | Device for disassembly and assembly of hydraulic cylinder |
-
2015
- 2015-03-04 CN CN201510095316.8A patent/CN104816151A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61136740A (en) * | 1984-12-03 | 1986-06-24 | Fujitsu Ten Ltd | Press-fitting machine |
| CN2500435Y (en) * | 2001-07-12 | 2002-07-17 | 韩忠 | Hydraulic tool |
| CN201175824Y (en) * | 2008-01-29 | 2009-01-07 | 安康水力发电厂 | Full automatic hydraulic disassembly system of gate arm |
| CN201198084Y (en) * | 2008-03-21 | 2009-02-25 | 林祥治 | Control system for rotating part of torque machine |
| CN202448078U (en) * | 2012-02-20 | 2012-09-26 | 重庆运达科技有限公司 | Internal combustion hydraulic bolt spanner for railway |
| CN203426669U (en) * | 2013-08-19 | 2014-02-12 | 侯博超 | Device for disassembly and assembly of hydraulic cylinder |
| CN203390519U (en) * | 2013-08-29 | 2014-01-15 | 宁波欣特机械有限公司 | Automatic pump for hydraulic wrench |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107028213A (en) * | 2017-05-09 | 2017-08-11 | 李宗恩 | A kind of electromagnet-friction fastening relaxation device of bulking machine |
| CN107028213B (en) * | 2017-05-09 | 2019-06-28 | 李宗恩 | A kind of electromagnet-friction fastening relaxation device of bulking machine |
| CN108278239A (en) * | 2018-04-28 | 2018-07-13 | 北京博望盛达商贸有限公司 | Effectively reduce the Full automatic bus lift frame hydraulic system of return oil pressure |
| CN108591190A (en) * | 2018-04-28 | 2018-09-28 | 北京博望盛达商贸有限公司 | Convenient for the Full automatic bus lift frame hydraulic system of control mode |
| CN108591191A (en) * | 2018-04-28 | 2018-09-28 | 北京博望盛达商贸有限公司 | Realize energy-efficient full-automatic anode busbar jacking frame hydraulic system |
| CN115008171A (en) * | 2022-04-21 | 2022-09-06 | 国网湖南省电力有限公司 | Self-adaptive bolt tightening tool |
| CN115008171B (en) * | 2022-04-21 | 2023-09-15 | 国网湖南省电力有限公司 | Self-adaptive bolt tightening tool |
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Application publication date: 20150805 |