CN207226900U - A kind of servo bracing members prestressing force classification application system of frequency control - Google Patents
A kind of servo bracing members prestressing force classification application system of frequency control Download PDFInfo
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- CN207226900U CN207226900U CN201721126119.9U CN201721126119U CN207226900U CN 207226900 U CN207226900 U CN 207226900U CN 201721126119 U CN201721126119 U CN 201721126119U CN 207226900 U CN207226900 U CN 207226900U
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- oil cylinder
- bracing members
- valve
- prestressing force
- control
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Abstract
A kind of servo bracing members prestressing force the utility model discloses frequency control is classified application system, including：One pump, a frequency converter and a servomotor, frequency converter are connected with servomotor, and Serve Motor Control pump, pump is arranged on working connection, and working connection is connected with eight branches respectively；Each bracing members are equipped with an oil cylinder, and each oil cylinder is connected with a branch respectively, and pump passes through an eight road control valve drive cylinders, the frequency of servomotor and the proportional control of the quantity of oil cylinder；Eight road control valves include：One two-position two-way electromagnetic directional valve and an electric proportional valve.The utility model is by setting servomotor to realize accurate control, while the action of 8 group oil cylinders is controlled respectively by 8 groups of 3-position 4-way electromagnetism, and in the course of work, oil cylinder is compensated according to pressure influence between oil cylinder, and control accuracy is high.
Description
Technical field
It the utility model is related to the technical field of bracing members, more particularly to a kind of prestressing force classification application system.
Background technology
At this stage, bracing members prestress application is by root, is disposably applied to setting value；Cause after-applied prestressing force shadow
Ring the prestressing force of the bracing members applied early period.
When especially more bracing members load different prestressing force, as the bracing members of different angle cannot synchronously apply pre- answer
Power, after-applied prestressing force influences to apply the prestressing force of bracing members early period, and easily leads to steel support structure destruction, causes bracing members
System effect is undesirable；After construction, prestressing force can not adjust, and be unsatisfactory for design prestressing force, influence construction effect.
Utility model content
The problem of for above-mentioned generation, the servo bracing members the purpose of this utility model is to provide a kind of frequency control are pre-
Stress grading application system.
To achieve these goals, the technical solution that the utility model is taken is：
A kind of servo bracing members prestressing force classification application system of frequency control, wherein, including：One pump, a frequency conversion
Device and a servomotor, the frequency converter are connected with the servomotor, pump, the pump described in the Serve Motor Control
It is arranged on working connection, the working connection is connected with eight branches respectively；Eight bracing members, each bracing members are equipped with
One oil cylinder, each oil cylinder are connected with a branch respectively, and the pump passes through described in an eight road control valve drivings
Oil cylinder, the frequency of the servomotor and the proportional control of quantity of the oil cylinder；Eight road control valve includes：One two
Two electric change valves, are provided with the two-position two-way electromagnetic directional valve on the working connection；One electric proportional valve, the main oil
The electric proportional valve is provided with road, the electric proportional valve is electric proportional pressure control valve or electric proportional pressure-reducing valve；Eight 3-position 4-ways
Solenoid directional control valve and eight hydraulic control one-way valves, be respectively arranged with each branch a three-position four-way electromagnetic directional valve and
One hydraulic control one-way valve；The thrust of each oil cylinder is the product of its hydraulic pressure and its piston area, the bracing members
Prestressing force is classified the hydraulic pressure pressure that application system calculates each oil cylinder needs according to the setting thrust reversing of each oil cylinder
Power, and control the thrust of each oil cylinder by controlling the hydraulic pressure of each oil cylinder needs.
The servo bracing members prestressing force classification application system of above-mentioned frequency control, wherein, further include a check valve, institute
State and the check valve is additionally provided with working connection.
The servo bracing members prestressing force classification application system of above-mentioned frequency control, wherein, further include nine pressure sensings
A pressure sensor is respectively arranged with device, the working connection and eight branches.
The servo bracing members prestressing force classification application system of above-mentioned frequency control, wherein, the pressure sensor installation
In the rodless cavity of the outlet of the pump or the oil cylinder.
The servo bracing members prestressing force classification application system of above-mentioned frequency control, wherein, the cylinder body of each oil cylinder
Along the end for being axially fixed in the bracing members of the bracing members.
The servo bracing members prestressing force classification application system of above-mentioned frequency control, wherein, the bi-bit bi-pass electromagnetism changes
It is arranged in parallel to valve and the electric proportional valve.
As a result of above-mentioned technology, the good effect for being allowed to have compared with prior art is the utility model：
(1) the utility model is by setting servomotor to realize accurate control, while the action of 8 group oil cylinders is by 8 groups three four
Energization magnetic controls respectively, and in the course of work, oil cylinder is compensated according to pressure influence between oil cylinder, and control accuracy is high.
Brief description of the drawings
Fig. 1 is the hydraulic schematic diagram of the servo bracing members prestressing force classification application system of the frequency control of the utility model.
In attached drawing：1st, pump；2nd, oil cylinder；3rd, eight road control valve；31st, bi-bit bi-pass relief valve；32nd, electric proportional valve；33rd, three
Four-way electromagnetic reversing valve；34th, hydraulic control one-way valve；35th, check valve；36th, pressure sensor.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, but not as the utility model
Limit.
Fig. 1 is the hydraulic schematic diagram of the servo bracing members prestressing force classification application system of the frequency control of the utility model,
It is shown in Figure 1, show a kind of servo bracing members prestressing force classification application system of frequency control of preferred embodiment, bag
Include：One 1, frequency converter of pump and a servomotor, frequency converter are connected with servomotor, Serve Motor Control pump 1,
Pump 1 is arranged on working connection, and working connection is connected with eight branches respectively.
In addition, as in preferred embodiment, the servo bracing members prestressing force classification application system of frequency control further includes：
Eight bracing members, each bracing members are equipped with an oil cylinder 2, and some oil cylinders 2 can use the oil that cylinder diameter is identical or cylinder diameter is different
Cylinder, each oil cylinder 2 are connected with a branch respectively, and pump 1 passes through eight road control valves, 3 drive cylinder 2, the frequency of servomotor
With the proportional control of quantity of oil cylinder 2, and the frequency of servomotor is switched in real time by frequency converter, ensures the stretching of oil cylinder 2
Speed influences from quantity, maintains to stablize.
Further, as in preferred embodiment, eight road control valves 3 include：One two-position two-way electromagnetic directional valve 31, it is main
Two-position two-way electromagnetic directional valve 31 is provided with oil circuit.
Further, as in preferred embodiment, eight road control valves 3 include：One electric proportional valve 32, sets on working connection
Electric proportional valve 32 is equipped with, electric proportional valve 32 is electric proportional pressure control valve or electric proportional pressure-reducing valve.With reduce equipment cost, improve can
The characteristics of by property, avoid the frequent starting of motor in the short time, reduces energy expenditure.
Further, as in preferred embodiment, eight road control valves 3 include：Eight three-position four-way electromagnetic directional valves 33
With eight hydraulic control one-way valves 34, a three-position four-way electromagnetic directional valve 33 and a fluid-control one-way are respectively arranged with each branch
Valve 34.Eight three-position four-way electromagnetic directional valves 33 control eight oil cylinders 2 to act respectively, realize the pressure of Precise Control of Oil cylinder 2.
On the other hand, as in preferred embodiment, the thrust of each oil cylinder 2 is its hydraulic pressure and its piston area
Product, bracing members prestressing force is classified application system and calculates the liquid that each oil cylinder 2 needs according to the setting thrust reversing of each oil cylinder 2
Pressure pressure, and control the thrust of each oil cylinder 2 by controlling the hydraulic pressure of each needs of oil cylinder 2.
In addition, as a check valve 35 in preferred embodiment, is further included, check valve 35 is additionally provided with working connection.
In addition, as nine pressure sensors 36 in preferred embodiment, are further included, set respectively on working connection and eight branches
It is equipped with a pressure sensor 36.
Further, as in preferred embodiment, pressure sensor 36 is installed on the outlet of pump 1 or the rodless cavity of oil cylinder 2
It is interior.
The foregoing is merely the utility model preferred embodiment, not thereby limit the utility model embodiment and
Protection domain.
The utility model also has on the basis of the above is implemented as follows mode：
In the further embodiment of the utility model, the cylinder body of each oil cylinder 2 is axially fixed in steel branch along a bracing members
The end of support.
In the further embodiment of the utility model, two-position two-way electromagnetic directional valve 31 is arranged in parallel with electric proportional valve 32.
In the further embodiment of the utility model, each pressure tap is equipped with pressure measuring tie-in and pressure sensor 36, while respectively
Delivery outlet blocks stifled protection with oil.
In the further embodiment of the utility model, warning device (not shown) is further included, warning device is in hydraulic pressure
Oil level blocks alarm in high-order or low level alarm in return filter.
In the further embodiment of the utility model, the servo bracing members prestressing force classification for further including frequency control applies system
The synchronous hierarchical loading method of system, including：
S1：Precharge step is performed to oil cylinder 2 by operating electric-control system, oil cylinder 2 is quickly eliminated by precharge step
Idle stroke, while eliminate the gap between oil cylinder 2 and bracing members and diaphragm wall；
S2：Synchronzed press step is performed to oil cylinder 2 by operating electric-control system；
S3：Electric-control system is transferred to the automatic compensation stage after S2.
Wherein, precharge step includes：By operate electric-control system by some oil cylinders 2 be loaded into design load 10~
20%, the proportional output of quantity of frequency converter and oil cylinder 2.
Synchronzed press step includes：By operate electric-control system by some oil cylinders 2 by design load 30-100% stage by stage
Loading, until some oil cylinders 2 are loaded into 100% design load, electric-control system suspends after the completion of each stage loading, frequency converter root
20~100% outputs are automatically set at according to the quantity of the oil cylinder 2 currently participated in each stage.
The automatic compensation stage includes：By electric-control system to not being loaded into the oil of 100% design load in synchronzed press step
For 2 ftercompction of cylinder to 100% design load, the change of simultaneous real-time monitoring system pressure, design is maintained at by the oil cylinder prestressing force of oil cylinder 2
It is worth in error range.
The foregoing is merely the utility model preferred embodiment, not thereby limit the utility model embodiment and
Protection domain, to those skilled in the art, should can appreciate that all with the utility model specification and diagram
Hold made equivalent substitution and obviously change obtained scheme, should be included in the protection model of the utility model
In enclosing.
Claims (6)
- A kind of 1. servo bracing members prestressing force classification application system of frequency control, it is characterised in that including：One pump, a frequency converter and a servomotor, the frequency converter are connected with the servomotor, the servo electricity Machine controls the pump, and the pump is arranged on working connection, and the working connection is connected with eight branches respectively；Eight bracing members, each bracing members are equipped with an oil cylinder, and each oil cylinder is connected with a branch respectively Logical, the pump drives the oil cylinder by an eight road control valves, and the frequency of the servomotor and the quantity of the oil cylinder are in Direct ratio controls；Eight road control valve includes：One two-position two-way electromagnetic directional valve, is provided with the two-position two-way electromagnetic directional valve on the working connection；One electric proportional valve, is provided with the electric proportional valve on the working connection, the electric proportional valve be electric proportional pressure control valve or Electric proportional pressure-reducing valve；Eight three-position four-way electromagnetic directional valves and eight hydraulic control one-way valves, one described three are respectively arranged with each branch Four-way electromagnetic reversing valve and a hydraulic control one-way valve；The thrust of each oil cylinder is the product of its hydraulic pressure and its piston area, and the bracing members prestressing force classification applies System calculates the hydraulic pressure of each oil cylinder needs according to the setting thrust reversing of each oil cylinder, and every by controlling The hydraulic pressure that one oil cylinder needs is to control the thrust of each oil cylinder.
- 2. the servo bracing members prestressing force classification application system of frequency control according to claim 1, it is characterised in that also Including a check valve, the check valve is additionally provided with the working connection.
- 3. the servo bracing members prestressing force classification application system of frequency control according to claim 1, it is characterised in that also Including nine pressure sensors, a pressure sensor is respectively arranged with the working connection and eight branches.
- 4. the servo bracing members prestressing force classification application system of frequency control according to claim 3, it is characterised in that institute Pressure sensor is stated to be installed in the outlet of the pump or the rodless cavity of the oil cylinder.
- 5. the servo bracing members prestressing force classification application system of frequency control according to claim 1, it is characterised in that every The end that is axially fixed in the bracing members of the cylinder body of one oil cylinder along the bracing members.
- 6. the servo bracing members prestressing force classification application system of frequency control according to claim 1, it is characterised in that institute Two-position two-way electromagnetic directional valve is stated to be arranged in parallel with the electric proportional valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721126119.9U CN207226900U (en) | 2017-09-01 | 2017-09-01 | A kind of servo bracing members prestressing force classification application system of frequency control |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721126119.9U CN207226900U (en) | 2017-09-01 | 2017-09-01 | A kind of servo bracing members prestressing force classification application system of frequency control |
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| CN207226900U true CN207226900U (en) | 2018-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445099A (en) * | 2017-09-01 | 2017-12-08 | 广州宏途设备工程有限公司 | A kind of servo bracing members prestressing force classification application system of VFC |
-
2017
- 2017-09-01 CN CN201721126119.9U patent/CN207226900U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107445099A (en) * | 2017-09-01 | 2017-12-08 | 广州宏途设备工程有限公司 | A kind of servo bracing members prestressing force classification application system of VFC |
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