CN202438958U - Pump special for high-precision intelligent hydraulic torque spanner - Google Patents
Pump special for high-precision intelligent hydraulic torque spanner Download PDFInfo
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- CN202438958U CN202438958U CN2012200391868U CN201220039186U CN202438958U CN 202438958 U CN202438958 U CN 202438958U CN 2012200391868 U CN2012200391868 U CN 2012200391868U CN 201220039186 U CN201220039186 U CN 201220039186U CN 202438958 U CN202438958 U CN 202438958U
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Abstract
The utility model relates to a pump special for a high-precision intelligent hydraulic torque spanner. The pump comprises a hydraulic unit, wherein the hydraulic unit comprises a hydraulic pump. The pump is characterized by also comprising a control unit and an execution unit, wherein the control unit comprises a processor, a pressure sensor and a data collector; the execution unit comprises an electromagnetic directional valve and a pressure regulating valve; the pressure regulating valve, the pressure sensor and the electromagnetic directional valve are arranged on a main oil path of the hydraulic pump; the pressure sensor is used for detecting output pressure of the hydraulic pump; the data collector is used for collecting a pressure signal detected by the pressure sensor; the pressure signal is collected by the data collector and read by the processor; and the processor is also used for receiving a time signal collected by the data collector and outputting a control signal to the electromagnetic directional valve according to the comparison of the pressure signal with a set pressure threshold value as well as the time signal so as to control the direction of the electromagnetic directional valve.
Description
Technical field
The utility model relates to a kind of hydraulic pump and spanner control method, particularly a kind of hydraulic torque wrench dedicated pump and hydraulic torque wrench control method.
Background technology
The hydraulic torque wrench that is used for various occasion assembling-disassembling bolt nuts; In use the hydraulic power unit that power is provided must be arranged; The pressure regulator valve of these hydraulic power units needs control manually at present; The pressure regulation result needs artificial judgment, and consequently the accuracy of the output pressure value of hydraulic power unit and stability receive man's activity very big.The reversal valve of these hydraulic power units or employing hand-operated direction valve, or adopt solenoid directional control valve to control by hand push button, all need a people to control reversal valve specially at any time, be difficult to realize operate automatically hydraulic torque wrench.The hydraulic torque wrench that has increases the protrusion parts on the hydraulic torque wrench outline; Increase signal cable and realize operating automatically hydraulic torque wrench; In the actual condition operating process; Very easily cause with protrusion parts damaged in collision and signal cable is pounded disconnected, more the limitation be can not realize hydraulic pump and common hydraulic torque wrench general.The hydraulic torque wrench that has has only been used to control near the triggering of switch excitation and has been realized operating automatically hydraulic torque wrench; Though realized work automatically continuously; But because the restriction of actual operating condition complexity, simultaneity factor itself can't logic judge pine is tightened or torn open to bolt when, needs artificially to judge; And then close down operating system; The use of this method makes the precision of tightening of hydraulic torque wrench receive very big influence, and efficient is low, has also reduced the service life of hydraulic torque wrench simultaneously.Heavier proportioning valve is installed on the hydraulic torque wrench that has, has also been realized the continuous operation of hydraulic torque wrench, but can not whether reach preset screw-down torque by the intelligent decision bolt, can not realize autostop.
In sum, present technology all must be used dedicated hydraulic torque wrench or dedicated hydraulic pumping plant, and can not intelligent control the automatic completion of predetermined torque, can not realize the general of hydraulic power unit and common hydraulic torque wrench.
The utility model content
The purpose of the utility model is to provide a kind of intelligent high-precision hydraulic torque wrench dedicated pump and hydraulic torque wrench control method.
The application's utility model people finds; In the rundown process of hydraulic torque wrench, the required time that oil cylinder piston forward stroke repeatedly in the corresponding spanner, the operating pressure of hydraulic pump reach pressure threshold constantly increases earlier; And then reduce; Reached the pretightning force requirement in case time decreased just shows,, can realize the output torque of hydraulic torque wrench or the accurate control of nut pre-fastening moment or hydraulic pump output hydraulic coupling according to this rule.This is the total technical conceive of the utility model.
According to aforementioned concepts, the 1st utility model is the high precision in control method of hydraulic torque wrench, is characterized in, comprises step a, utilizes pressure regulator valve that the operating pressure of hydraulic pump is locked in pressure threshold P0; Step b; Utilize pipeline that the oil cylinder of hydraulic pump and hydraulic torque wrench is joined; In the working connection of this hydraulic pump, solenoid directional control valve is set; Via this solenoid directional control valve with the output hydraulic pressure transfer of hydraulic pump to said oil cylinder so that the piston-advance in the said oil cylinder, and then promote the hydraulic torque wrench drive load; Step c utilizes the pressure sensor in the said working connection to detect the current pressure P of said working connection, and utilizes processor relatively P and P0, when P＜P0, keeps hydraulic pump to continue output hydraulic pressure, so that said pipeline continues supercharging; Steps d, when P=P0, processor record step b is to steps d required time T0; Step e utilizes processor to switch said solenoid directional control valve, makes said pipeline decompression, so that said piston is retreated; Step f utilizes the pressure sensor in the said working connection to detect the current pressure P of said working connection, and utilizes processor to compare the backhaul pressure P 1 of P and setting, continues to make said pipeline decompression up to P=P1; Step g is delivered to said oil cylinder via this solenoid directional control valve with the output hydraulic pressure of hydraulic pump once more, so that the piston in the said oil cylinder advances once more, and then promotes the hydraulic torque wrench drive load once more; Step h utilizes the pressure sensor in the said oil circuit to detect the current pressure P of said working connection, and utilizes processor relatively P and P0, when P＜P0, keeps hydraulic pump to continue output hydraulic pressure, so that said pipeline continues supercharging; Step I, when P=P0, processor record step g to step I required time Tx, x is the integer greater than 0; And step j, utilize processor relatively Tx and Tx-1, if Tx >=Tx-1, then circulation step e is to step I.
The high precision in control method of the described hydraulic torque wrench of the 1st utility model, its further characteristics are in step j, to set Tx and just stop spanner work than Tx-1 less than setting value.
The high precision in control method of the described hydraulic torque wrench of the 1st utility model, its further characteristics be, in step a, the intelligent pressure regulating valve through band intelligent compensation function is locked in operating pressure P0 with the output pressure of hydraulic pump.
According to aforementioned total design, the 2nd utility model is a high-precision intelligent hydraulic torque wrench dedicated pump, comprises hydraulic pressure unit; Said hydraulic pressure unit comprises hydraulic pump; Be characterized in that also comprise control module and performance element, said control module comprises processor, pressure sensor and data acquisition unit; Said performance element comprises solenoid directional control valve and pressure regulator valve; Pressure regulator valve, pressure sensor and solenoid directional control valve are arranged on the working connection of hydraulic pump, and pressure sensor detects the output pressure of hydraulic pump, and data acquisition unit is gathered the detected pressure signal of pressure sensor; Pressure signal is collected by data acquisition unit and is read by processor; Processor also receives the time signal that data acquisition unit is gathered, and processor outputs control signals to solenoid directional control valve according to the comparison and the time signal of the pressure threshold of this pressure signal and setting, with the switching-over of control solenoid directional control valve.
The described high-precision intelligent hydraulic torque wrench of the 2nd utility model dedicated pump; Its further characteristics are; Said pressure regulator valve disposes the power with controlled unit, and said power unit receiving processor and said pressure sensor formation one couple the feedback unit of this power unit.
The described high-precision intelligent hydraulic torque wrench of the 2nd utility model dedicated pump, its further characteristics are that said processor couples inputting interface.
The described high-precision intelligent hydraulic torque wrench of the 2nd utility model dedicated pump; Its further characteristics are; Said processor comprises PLC controller and microprocessing unit; Said microprocessing unit receives the input signal of inputting interface and is delivered to the PLC controller; Said data acquisition unit is also gathered the time signal of timing unit and is sent to the PLC controller, and said PLC controller outputs control signals to solenoid directional control valve according to comparison and this time signal of the pressure threshold of this pressure signal and setting.
According to aforementioned total design, the 3rd utility model is a high-precision intelligent hydraulic torque wrench dedicated pump, is characterized in, according to described high precision in control method operation.
According to aforementioned total design, the 4th utility model is the control method of hydraulic torque wrench, is characterized in, comprises step a, utilizes pressure regulator valve that the operating pressure of hydraulic pump is locked in pressure threshold P0; Step b utilizes pipeline that the oil cylinder of hydraulic pump and hydraulic torque wrench is joined, and the output hydraulic pressure transfer of hydraulic pump to said oil cylinder, so that the piston-advance in the said oil cylinder, and then is promoted the hydraulic torque wrench drive load; Step c detects the work at present pressure P of hydraulic pump, and relatively P and P0, when P＜P0, keeps hydraulic pump to continue output hydraulic pressure, so that said pipeline continues supercharging; Steps d, when P=P0, b is to steps d required time T0 for the record step; Step e makes said pipeline decompression, so that said piston is retreated; Step f detects the work at present pressure P of hydraulic pump, and compares P and predetermined backhaul pressure P 1, continues to make said pipeline decompression up to P=P1; Step g is delivered to said oil cylinder once more with the output hydraulic pressure of hydraulic pump, so that the piston in the said oil cylinder advances once more, and then promotes the hydraulic torque wrench drive load once more; Step h detects the work at present pressure P of said hydraulic pump, and relatively P and P0, when P＜P0, keeps hydraulic pump to continue output hydraulic pressure, so that said pipeline continues supercharging; Step I, when P=P0, record step g to step I required time Tx, x is the integer greater than 0; And step j, compare Tx and Tx-1, if Tx >=Tx-1, then circulation step e is to step j.
The 4th utility model can hydraulic torque wrench realization automatically or semiautomatic control.
The continuous operation that can automatically commutate of aforementioned the 1st, 2,3 utility models; Be convenient to according to tightening or the torque value requirement of demounting bolt, the process of finishing the work automatically, and have intelligent decision; Automatically quit work after accomplishing the torque value of specifying bolt to set; Because torque wrench is had no specific requirement, therefore possess versatility widely simultaneously, be applicable to the hydraulic torque wrench of various brands, all kinds and all size.
Description of drawings
Figure 1A is an intelligent high-precision hydraulic torque wrench dedicated pump contour structures schematic, elevational view among the utility model one embodiment, and Figure 1B is a right view.
Fig. 2 is the system block diagram of intelligent high-precision hydraulic torque wrench dedicated pump among Fig. 1.
Fig. 3 is the block diagram of intelligent high-precision hydraulic torque wrench dedicated pump control module among Fig. 1.
Fig. 4 is the schematic flow sheet of intelligent high-precision hydraulic torque wrench dedicated pump control method among Fig. 1.
Fig. 5 is the sketch map of intelligence, high-precision hydraulic torque wrench dedicated pump control panel among Fig. 1.
The specific embodiment
Like Figure 1A, Figure 1B and shown in Figure 2, in an embodiment of the utility model, intelligent high-precision hydraulic torque wrench dedicated pump comprises hydraulic pressure unit, control module and performance element, and wherein hydraulic pressure unit 4 is the hydraulic pump body.Control module comprises data acquisition unit 1, pressure sensor 6 and processor 8.Performance element comprises the intelligent pressure regulating valve 7 of solenoid directional control valve 3 (having the high-low pressure output port) and band intelligent compensation function.Data acquisition unit 1 can be integrated in the processor 8.
In the intelligence high-precision hydraulic torque wrench dedicated pump, power is provided, gathers and handle related data, carry out hydraulic spanner 11 by performance element 3,7 and realize accurately action control automatically of hydraulic spanner by control module 6,8,1 by hydraulic pressure unit 4.
Consult Fig. 2 and shown in Figure 3; Pressure sensor 6, data acquisition unit 1 are arranged on the working connection of hydraulic pressure unit 4; Solenoid directional control valve 3, intelligent pressure regulating valve 7 also are arranged on the working connection (working connection in other words) of hydraulic pressure unit, and pressure sensor 6 detects the pressure size of hydraulic pressure unit 4 operating pressures, and the pressure signal of pressure sensor 6 outputs to processor 8 after data acquisition unit 1 is gathered; Processor 8 compares pressure signal and pressure threshold; And according to comparative result output feedback signal to intelligent pressure regulating valve 7, intelligent pressure regulating valve 7 is transferred big according to feedback signal or is turned the fluid latus rectum down, with the output hydraulic pressure of regulating hydraulic pressure unit 4 to threshold value; The output hydraulic pressure of hydraulic pressure unit 4 is delivered to hydraulic spanner 11 through oil pipe, to drive hydraulic spanner 11 pre-load nuts.
Intelligent pressure regulating valve 7 can be made up of power unit and pressure regulator valve; Power unit can be controlled by processor; It for example is servomotor; Servomotor drives pressure regulator valve according to the feedback unit that processor, pressure sensor constitute, with the size of the fluid latus rectum of decision pressure regulator valve, thus the decision output pressure.Intelligent pressure regulating valve 7 general reference can be stable with output pressure according to feedback signal or the pressure regulator valve of locking.
The internal structure of hydraulic spanner 11 is diagram not, and it mainly is made up of Power Component and work package, wherein; Power Component comprises that the oil cylinder, the telescopically that are connected with hydraulic pump are arranged on in-oil cylinder piston rod, and work package comprises sleeve, swing arm, is arranged on the ratchet mechanism that drive sleeve is rotated that is used between sleeve and the swing arm, and the piston rod front end of Power Component is fixedly connected with the swing arm of work package; When the needs fastening bolt, jacket casing is located on the nut, oil cylinder receives the hydraulic pressure of hydraulic pressure unit 4 outputs; It axially moves back and forth piston rod in the effect lower edge of pressure, thereby drives the swing arm campaign, then under the force transmission of swing arm; The action of promotion ratchet mechanism makes sleeve rotate an angle, like this; To further locking be provided for nut and bolt, above-mentioned repeatedly action finally realizes the fastening of bolt.
Data acquisition unit 1 for example is an AD module collector, and the pressure signal of gathering pressure sensor 6 outputs also passes through filtering, outputs to processor 8.Processor 8 is controlled the switching-over of solenoid directional control valve 3 according to the time signal (from timing unit, gathering) of data acquisition unit 1 output and the pressure signal of pressure sensor 6 outputs, and judges whether pretension of bolt, then controls hydraulic pressure unit 4 as if pretension and quits work.
The setting of threshold value can be provided with through the control panel of processor 8.As shown in Figure 5, control panel comprises pressure or moment of torsion display window 81, parameter setting window 82, manual control button 84, state selector button 85, the play button 86 and the button 87 that quits work automatically.Wherein the state selector button is set three kinds of working procedures, uses the NF state through the bolt of manual pretension, uses PF state (not shown in the diagram) without the manual bolt of pretension, double pretension and twice pretension pressure reduction at 10MP with interior use SF state.As shown in Figure 3, control panel for example is touch-screen control or handle control.
Intelligent high-precision hydraulic torque wrench dedicated pump control method is described below.
Consult shown in Figure 4ly, in step 100, open system switching, on the microprocessor control panel, select the hydraulic spanner model, require to set the threshold value that hydraulic pressure unit 4 is a pump housing operating pressure (or corresponding moment of torsion) P0 according to the bolt prefastening torque.Open pump housing switch 9; Pressure sensor 6 detects the pressure signal of working connection in the pump housing 4; Pressure signal is handled back transmitting processor 8 through signals such as signal picker filtering; Processor 8 compares with pressure threshold according to detected pressure size, and difference is outputed to intelligent pressure regulating valve 7 as feedback signal, reaches P0 thereby make intelligent pressure regulating valve 7 adjust hydraulic pump body 4 operating pressures automatically.
Next, in step 101, beginning stroke program; Promptly push the control program that automatic button 86 on the microprocessor control panel promptly starts processor 8; While solenoid directional control valve 3 gets electric, and the piston worker of hydraulic spanner 11 advances, and processor 8 picks up counting simultaneously; Its clocking method for example is a time for reading signal from a timing module, and this timing module can be to be coupled in the timing unit by data acquisition unit 1 to constitute.
Next, in step 102, processor 8 reads the work at present pressure P that pressure sensor 6 transmission is come, and this moment, the work at present pressure P was less than pressure threshold P0, keeps hydraulic pressure unit 4 to continue superchargings because fluid is delivered to the oil cylinder of spanner 11 through oil circuit;
Next, in step 103, when the operating pressure P of hydraulic pressure unit 4 reaches P0, the 8 record work at present times of processor, promptly note down step 101 to step 103 required time T1;
Next, in step 104, stop the stroke program, processor 8 sends control signal, makes solenoid directional control valve 3 dead electricity, reverse fluid flow in the oil circuit;
Next, in step 105, processor 8 reads the work at present pressure P (it is detected by pressure sensor 6 and is gathered by data acquisition unit 1) of hydraulic pressure unit;
Next, in step 106, the backhaul pressure P 1 of work at present pressure P and setting is compared, continue decompression up to, P=P1;
Next, in step 107, start the stroke program once more, it is electric that processor 8 makes that solenoid directional control valve 3 gets, hydraulic pressure unit 4 output hydraulic pressure to hydraulic spanner pistons, so that hydraulic spanner piston worker advances, processor 8 picks up counting simultaneously;
Next, in step 108, processor 8 reads pressure sensor 6 and transmits the work at present pressure P of coming, and this moment, operating pressure P was less than pressure threshold P0, kept hydraulic pressure unit 4 to continue supercharging;
Next, in step 109, when the operating pressure P of hydraulic pressure unit 4 reaches P0, the 8 record work at present times of processor, promptly note down step 107 to step 109 required time Tx, x is the integer greater than 0;
Next, in step 110, processor is Tx and Tx-1 relatively, if Tx >=Tx-1, then circulation step 107 is to step 110, and up to Tx＜Tx-1, processor stops spanner work, and this moment, the pretightning force of bolt reached exact value.
In the aforementioned embodiment; The microprocessing unit that processor 8 for example is PLC controller (it is integrated with data acquisition unit), couple with the PLC controller; The PLC controller carries out the comparative analysis of data; Export control signal then, microprocessing unit receives the input setting value of control panel, will import setting value then and be sent to the PLC controller.
In the aforementioned embodiment; Also there are many variations; For example the function of timing can directly realize that by processor 8 inner timing modules control method shown in Figure 4 is suitable for the method for Automatic Control, and automatic relatively judgment part wherein also can add manually auxiliary.Although therefore the utility model is according to preferable describing with interchangeable enforcement; But it is understandable that; Those skilled persons for the present technique field; Other variation of the utility model and change be obviously and all will be encompassed in the content that this place discloses, and the scope of the utility model will be not limited only to described embodiment.
Claims (4)
1. high-precision intelligent hydraulic torque wrench dedicated pump comprises hydraulic pressure unit, and said hydraulic pressure unit comprises hydraulic pump; It is characterized in that also comprise control module and performance element, said control module comprises processor, pressure sensor and data acquisition unit; Said performance element comprises solenoid directional control valve and pressure regulator valve; Pressure regulator valve, pressure sensor and solenoid directional control valve are arranged on the working connection of hydraulic pump, and pressure sensor detects the output pressure of hydraulic pump, and data acquisition unit is gathered the detected pressure signal of pressure sensor; Pressure signal is collected by data acquisition unit and is read by processor; Processor also receives the time signal that data acquisition unit is gathered, and processor outputs control signals to solenoid directional control valve according to the comparison and the time signal of the pressure threshold of this pressure signal and setting, with the switching-over of control solenoid directional control valve.
2. high-precision intelligent hydraulic torque wrench dedicated pump as claimed in claim 1; It is characterized in that; Said pressure regulator valve disposes the power with controlled unit, and said power unit receiving processor and said pressure sensor formation one couple the feedback unit of this power unit.
3. high-precision intelligent hydraulic torque wrench dedicated pump as claimed in claim 1 is characterized in that said processor couples inputting interface.
4. high-precision intelligent hydraulic torque wrench dedicated pump as claimed in claim 3; It is characterized in that; Said processor comprises PLC controller and microprocessing unit; Said microprocessing unit receives the input signal of inputting interface and is delivered to the PLC controller, and said data acquisition unit is also gathered the time signal of timing unit and is sent to the PLC controller, and said PLC controller outputs control signals to solenoid directional control valve according to comparison and this time signal of the pressure threshold of this pressure signal and setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200391868U CN202438958U (en) | 2012-02-07 | 2012-02-07 | Pump special for high-precision intelligent hydraulic torque spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200391868U CN202438958U (en) | 2012-02-07 | 2012-02-07 | Pump special for high-precision intelligent hydraulic torque spanner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202438958U true CN202438958U (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200391868U Expired - Lifetime CN202438958U (en) | 2012-02-07 | 2012-02-07 | Pump special for high-precision intelligent hydraulic torque spanner |
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| Country | Link |
|---|---|
| CN (1) | CN202438958U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581804A (en) * | 2012-02-07 | 2012-07-18 | 胡井湖 | Special high-precision intelligent pump for hydraulic torque wrench and method for controlling hydraulic torque wrench |
| CN107486741A (en) * | 2017-09-22 | 2017-12-19 | 湖南师范大学 | A kind of spanner machining tool control system |
| CN107608305A (en) * | 2017-10-26 | 2018-01-19 | 国电联合动力技术(保定)有限公司 | A kind of automatic hydraulic torque wrench test device control system |
| CN110142719A (en) * | 2019-06-03 | 2019-08-20 | 北京赛亚思科技有限公司 | A kind of Intelligent spanner control system |
-
2012
- 2012-02-07 CN CN2012200391868U patent/CN202438958U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102581804A (en) * | 2012-02-07 | 2012-07-18 | 胡井湖 | Special high-precision intelligent pump for hydraulic torque wrench and method for controlling hydraulic torque wrench |
| CN102581804B (en) * | 2012-02-07 | 2014-06-18 | 胡井湖 | Special high-precision intelligent pump for hydraulic torque wrench and method for controlling hydraulic torque wrench |
| CN107486741A (en) * | 2017-09-22 | 2017-12-19 | 湖南师范大学 | A kind of spanner machining tool control system |
| CN107608305A (en) * | 2017-10-26 | 2018-01-19 | 国电联合动力技术(保定)有限公司 | A kind of automatic hydraulic torque wrench test device control system |
| CN110142719A (en) * | 2019-06-03 | 2019-08-20 | 北京赛亚思科技有限公司 | A kind of Intelligent spanner control system |
| CN110142719B (en) * | 2019-06-03 | 2020-12-18 | 北京赛亚思科技有限公司 | Intelligent wrench control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: MAS JHJX MACHINERY MANUFACTURING CO., LTD. Assignor: Hu Jinghu Contract record no.: 2015320000072 Denomination of utility model: Special high-precision intelligent pump for hydraulic torque wrench and method for controlling hydraulic torque wrench Granted publication date: 20120919 License type: Exclusive License Record date: 20150317 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120919 |