CN200955001Y - Super-high-voltage electric separation type synchronous jack - Google Patents
Super-high-voltage electric separation type synchronous jack Download PDFInfo
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- CN200955001Y CN200955001Y CN 200620126903 CN200620126903U CN200955001Y CN 200955001 Y CN200955001 Y CN 200955001Y CN 200620126903 CN200620126903 CN 200620126903 CN 200620126903 U CN200620126903 U CN 200620126903U CN 200955001 Y CN200955001 Y CN 200955001Y
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- 230000001360 synchronised effect Effects 0.000 title claims description 21
- 238000000926 separation method Methods 0.000 title claims description 17
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000000523 sample Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 13
- 230000002457 bidirectional effect Effects 0.000 claims description 9
- 230000000630 rising effect Effects 0.000 abstract description 4
- 230000004907 flux Effects 0.000 abstract 3
- 239000003921 oil Substances 0.000 description 85
- 230000005611 electricity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000010720 hydraulic oil Substances 0.000 description 4
- 230000001174 ascending effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
The utility model relates to a super high pressure electromotion separate style synchronization jack and pertains to the jack technical field. The utility model comprises a plurality of supper-high voltage separate style jacks. Each jack is composed of a super high voltage electromotion oil pump, a jack, and a high voltage oil tube. The high voltage is also connected with a liquid flowmeter PS, a relay PS and flux probe SP flux display, and a central control unit. The central control unit control if all set of the high voltage electromotion works according to the flux value signal of flowing to the high voltage oil tube. The utility model is through the grading synchronization lifting, with excellent performance, high control precision, while fulfilling the auto-control, center control. The test result display that when is rising to 150 mm height, the most error is 1mm between the difference set of the jack.
Description
The technical field is as follows:
the utility model relates to a synchronous jack of superhigh pressure electronic disconnect-type belongs to jack technical field.
(II) background technology:
the ultrahigh-pressure electric separation type jack is a type of jack series and consists of an ultrahigh-pressure electric oil pump, a jack and a high-pressure oil pipe for connecting the ultrahigh-pressure electric oil pump and the jack. Wherein,
the ultrahigh-pressure electric oil pump mainly comprises a motor, a high-pressure oil pump, a low-pressure oil pump, a high-pressure overflow valve, a low-pressure overflow valve, a reversing valve, a high-pressure oil pipe and an oil tank. It is a hydraulic power source which can work independently.
The reversing valve is a three-position four-way reversing valve operated manually, and two oil outlets on the reversing valve are connected with the oil cylinder through a high-pressure hose.
When the motor drives the high-pressure oil pump and the low-pressure oil pump to work, hydraulic oil is sucked in from the high-pressure oil inlet screw hole and the low-pressure oil inlet screw hole respectively and then is extruded out from the high-pressure check valve and is connected to the high-pressure oil path and the low-pressure oil path of the valve body part respectively, high-pressure oil and low-pressure oil are output simultaneously during low pressure, when the pressure exceeds 7Mpa, the low-pressure overflow valve opens for overflow, and when the pressure exceeds 63Mpa, the high-pressure.
The jack mainly comprises an oil cylinder, a piston, a guide cover and a bidirectional hydraulic lock. After hydraulic oil is connected into a jack cylinder through a two-way hydraulic lock by a high-pressure oil pipe, a piston is jacked up under the action of oil pressure, when the jack needs to be stopped when jacked to a certain height, the power supply of an electric oil pump is turned off, at the moment, the jack automatically stops at the original position and keeps the pressure in the cylinder under the action of the two-way hydraulic lock,
if readjustment is needed, the lifting of the jack is still controlled by starting the oil pump.
In the situation of lifting ultra-large or ultra-heavy objects, several pumps, several or dozens of jacks are often needed to form an ultra-high voltage electric separation type synchronous jack to lift the same object together, and the jack is widely applied to lifting of equipment in the industries such as heavy mechanical bridge engineering, building, hydraulic engineering, port construction and the like. It requires each jack to jack up synchronously in order to reach the balanced purpose.
In the prior art, each jack of the ultrahigh-voltage electric separation type synchronous jacks needs to be synchronously jacked, and each ultrahigh-voltage electric separation type jack is mutually independent, so that the purpose of synchronous jacking is achieved, manual control by multiple persons is needed, the synchronism is poor, the safety is poor, the control precision is poor, and manpower is consumed.
(III) the invention content:
the utility model aims at providing a synchronism is good, the synchronous jack of superhigh pressure electronic disconnect-type that control accuracy is high.
The invention idea of the utility model is as follows:
a liquid flowmeter is added in an oil inlet pipeline of each jack and outputs a flow electric signal in time, and meanwhile, a central control circuit is added and receives the flow electric signal and gives an electric signal to control whether a motor of each ultrahigh-pressure electric oil pump works or not. And synchronous jacking of each jack in stages is realized through staged equal flow distribution.
The technical solution of the utility model is as follows:
an ultrahigh-pressure electric separation type synchronous jack comprises a plurality of ultrahigh-pressure electric separation type jacks, each backup platform consists of an ultrahigh-pressure electric oil pump, a jack and a high-pressure oil pipe for connecting the jack and the ultrahigh-pressure electric oil pump,
the ultrahigh pressure electric oil pump consists of a motor, a high pressure oil pump, a high pressure overflow valve, a reversing valve, a high pressure oil pipe and an oil tank,
the jack mainly comprises an oil cylinder, a piston and a guide cover,
the method is characterized in that:
a liquid flowmeter PS is also arranged in the high-pressure oil pipe,
it also includes a flow display instrument with relay PS and flow probe SR, the described flow probe SR is placed in the described liquid flowmeter PS,
the flow probe SR1-SRn installed in the liquid flowmeter PS1-PSn (n corresponds to the number of jacks forming the ultrahigh pressure electric separation type synchronous jack, the same below) detects the flow value flowing through the high pressure oil pipe and transmits the flow value to the flow display instrument, the electric signal output end reflecting the flow value is connected with the relay PS in the flow display instrument,
it also includes a central controller, the central controller is composed of fuse, transformer, AC contactor K1, K8, AC contactor K11-K1n, intermediate relay K7, time relay K6, button switch S1, S2, button switch with lock S3, counter with relay P, proximity sensor SQ,
the connected 380V three-phase power supply is connected with a normally open contact of an alternating current contactor K1 through a fuse, and two phases 380V of the power supply are connected with a primary side of a transformer. The output of the normally open contact of the K1 is connected with the normally open contact of the AC contactor K11-K1n, the output of the normally open contact of the K11-K1n is connected with the motor M1-Mn in each ultra-high voltage electric oil pump,
one group of taps of the secondary coil of the transformer are connected with the power supply end of the flow indicator PS1-PSn and the normally closed contact of the counter P through a fuse,
the normally open output of the flow meter PS1-PSn is respectively connected with the electromagnetic coils of K11-K1n,
the normally closed output of the relay of the counter P is connected with the normally closed contact of the time relay K6 at one path, the output of the K6 is connected with the normally open contact of the intermediate relay K7, the normally open output of the intermediate relay K7 is connected with the normally closed contact of the alternating current contactor K8 at the other path, the normally closed contact of the alternating current contactor K11-K1n connected in series is connected with the button switch S3 at the other path, the power input of the time relay K6, the electromagnetic coil of the alternating current contactor K8 and the normally open contact of the K6 are connected at the same time after the output of the S3, the normally open contact of the flowmeter PS1-PSn and the normally closed contact of the alternating current contactor K8 are connected after the normally open output of the K8, the normally open contact of the intermediate relay K7 at one path is connected with the electromagnetic coil of the intermediate relay K7 through.
And an intermediate relay K7 is connected in series with a power supply circuit of the flow display instrument PS 1-PSn.
The further technical scheme is as follows:
the ultrahigh-pressure electric oil pump also comprises a low-pressure overflow valve and a low-pressure oil pump.
The jack also comprises a bidirectional hydraulic lock.
The central controller also comprises a red signal lamp H1, red signal lamps H11-H1n, a green signal lamp H2 and a green signal lamp H21-H2n, normally closed contacts of the alternating current contactors K1 and K11-K1n are respectively connected with the red signal lamp H1 and the red signal lamps H11-H1n, and normally open contacts of the alternating current contactors K1 and K11-K1n are respectively connected with the green signal lamps H2 and the green signal lamps H21-H2 n.
The working process of the utility model is as follows:
first, pressing the S2 button switch closes K1 and energizes the K11-K1n normally open input contacts. Then pressing a button switch S3 with a lock, at the moment, the electromagnetic coil of K8 is electrified, so that the normally closed switch of K8 is disconnected, so that K7 and K11-K1n are not closed, after a few seconds, a delay switch K6 is operated, K11-K1N is electrified and closed, meanwhile, the normally closed contacts of K11-K1N are electrified, S3 and K6 are electrified, but another power supply is switched on at the moment, and the power supply is sent to K7 from the normally closed contacts of K6 and K8 because K6 and K8 are electrified, a relay in the flow display instrument is electrified and closed after K7 is closed, so that the normally open contacts of K11-K1N are electrified, and each electric oil pump motor works.
When any jack (n) rises to a preset interval height value Nmm, the liquid display instrument value corresponding to the jack reaches the preset interval height value, the alternating current contactor K1n connected with the jack acts, at the moment, the electric oil pump motor is powered off and stops for waiting, at the moment, the rest jacks still continue to rise until all jacks rise to the preset interval height value Nmm, and at the moment, all jacks complete an interval rising process.
When all the jacks are lifted to the preset interval height value Nmm, the S3 is electrified again, the normally closed contacts of the series AC contactors K11-K1n connected with the S3 button switch are switched on, each electric oil pump motor works again, the next interval lifting process is started again, and the actions are repeated.
In the whole process, the counter works until the counter reaches a preset total jacking height value, the normally closed contact of the relay of the counter P is normally opened, the alternating current contactor K11-K1n is completely de-energized, and each electric oil pump motor is stopped. Thus, the whole lifting process of each jack is completed.
By adopting the above technical scheme, the utility model, central control has been realized to each electric oil pump's motor. When a power switch is started, all the electric oil pumps are started simultaneously, all the jacks are lifted simultaneously, when one jack is lifted to a preset interval height value Nmm, the electric oil pump can be stopped automatically for waiting, the jack is temporarily kept at the height under the action of a bidirectional hydraulic lock, and other jacks are still lifted continuously until all the jacks are lifted to the preset interval height value and stopped for waiting successively, when all the jacks are lifted to the interval height value Nmm, all the oil pumps are started again simultaneously after several seconds under the action of a time relay, all the jacks are lifted simultaneously, and the lifted height is still the preset interval height value Nmm, and the process is repeated. And when the total preset height is reached, the whole synchronous jack automatically stops working.
The utility model discloses an each jack has realized synchronous jacking stage by stage, and the synchronism of the synchronous jack of whole super high pressure electric separation formula is good, and the security is good. The interval height value Nmm of each rise can be set artificially, and the control precision is high. Meanwhile, automatic control and central control are realized, and manpower is saved.
Of course, the smaller the interval height Nmm is set, the better the synchronism of the present invention is.
The further technical scheme is as follows:
and an inverter is also connected in parallel to a power supply circuit of the central controller.
When the external power supply suddenly loses power due to faults, the inverter can ensure the safety of data, and can continue working before power failure when power is on.
The technical scheme of the next step is as follows:
and the high-pressure oil pipe connected with each jack is also connected with a pressure indicator SP.
The pressure indicator SP1-SPnThe pressure value is used for measuring and controlling the pressure value of each jack and outputting and displaying the pressure value so as to be convenient for regulation and control.
(IV) description of the drawings:
the present invention will be described in detail with reference to the following drawings and examples:
fig. 1 is a schematic diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of one group of ultrahigh-pressure electric separation type jacks in the embodiment.
Fig. 3 is a hydraulic schematic diagram of one of the extra-high pressure electric oil pumps in this embodiment.
Fig. 4 is a circuit diagram of this embodiment.
In fig. 1, the respective numbers are: 1. a jack; 2. a liquid flow meter; 3. a high pressure oil pipe; 4. an extra-high pressure electric oil pump; 5. central controller
In fig. 2, the respective numbers are: 6. a piston; 7. a guide cover; 8. an oil cylinder; 9. a bidirectional hydraulic lock; 10. a diverter valve; 11. a reversing handle; 12. an oil tank; 13. a pressure gauge; 14. jacking the oil outlet pipe; 15. jacking an oil return pipe; 16. an oil filter; 17. a motor and an oil pump; 18. an overflow valve;
(V) specific embodiment:
referring to the attached drawings, the ultrahigh-pressure electric separation type synchronous jack shown in the embodiment of the utility model comprises four ultrahigh-pressure electric separation type jacks and a central controller, wherein each ultrahigh-pressure electric separation type jack comprises an ultrahigh-pressure electric oil pump 4, a jack 1 and a high-pressure oil pipe 3 connecting the ultrahigh-pressure electric oil pump and the jack,
the jack mainly comprises an oil cylinder 8, a piston 6, a guide cover 7 and a bidirectional hydraulic lock 9, and has the load capacity of 200T and the stroke of 150mm
The ultrahigh pressure electric oil pump has the maximum pressure of 63Mpa, the high pressure flow of 1L/min and the low pressure flow of 4L/min when the pressure is below 7Mpa, and consists of a high pressure overflow valve, a low pressure overflow valve (generally marked as 18 in the figure), a reversing valve 10, an oil filter 16, an oil tank 12, a motor with the power of 1.5KW, a high pressure oil pump and a low pressure oil pump (generally marked as 17 in the figure),
the high-pressure oil pipe in each ultrahigh-pressure electric separation type jack is connected with a liquid flowmeter 2 (PS 1-PS4 in four jacks respectively),
it also comprises a flow indicator (not shown) with a relay PS and a flow probe SR, said flow probe SR being placed in said liquid flow meter 2,
the flow probe SR1-SR4 installed in the liquid flowmeter PS1-PS4 detects the flow value flowing out of the flowmeter and transmits the flow value to the flow display instrument, and the electric signal output end reflecting the flow value is connected with the relay PS in the flow display instrument.
When the motor drives the high-pressure oil pump and the low-pressure oil pump to work, hydraulic oil is sucked in from the high-pressure and low-pressure oil inlet screw holes respectively and then is extruded out from the high-pressure and low-pressure check valves and is connected to the high-pressure oil path and the low-pressure oil path of the valve body part respectively.
When hydraulic oil enters the jack cylinder 8 along the high-pressure oil pipe 3 through the bidirectional hydraulic lock 9, the jack piston 6 is jacked under the guiding action of the guide cover 7.
When the power supply of the electric oil pump is turned off, the jack is automatically stopped at the original position and maintains the pressure in the oil cylinder due to the bidirectional hydraulic lock 9.
The central controller consists of a fuse, a transformer, alternating current contactors K1 and K8, alternating current contactors K2-K5, red signal lamps H1, H3, H5, H7, H9, green signal lamps H2, H4, H6, H8, H10, an intermediate relay K7, a time relay K6, button switches S1 and S2, a button switch with lock S3, a counter P, an inverter U and a proximity sensor SQ,
it is composed of the following parts:
a power input section:
consists of a fuse F1-F7, a transformer TC and an alternating current contactor K1-K5,
the three phases 380V of the accessed power supply are connected with the normally open contact of the AC contactor K1 through the fuse, and the two phases 380V are connected with the primary side of the transformer. The output of the K1 normally open contact is connected with the normally open contact of the K2-K5 AC contactor, and the output of the K2-K5 normally open contact is connected with the M1-M4 motor.
Signal lamp part:
the power supply of the signal lamp is supplied by the secondary of the transformer, the signal lamp is divided into 10 dichromatic signals, H1, H3, H5, H7 and H9 are red, and are connected with K1-K5 normally closed contacts, when K1-K5 are not closed, the signal lamp is on, H2, H4, H6, H8 and H10 are green, and are connected with K1-K5 normally open contacts, when K1-K5 are closed, a green lamp is on, and simultaneously, a red lamp is off.
The control part of the flow display instrument:
one group of taps of the secondary coil of the transformer are connected with the power supply end of the flow indicator PS1-PS4 and the normally closed contact of the counter P through a fuse,
an intermediate relay K7 is connected in series on a power supply circuit of the flow display instrument PS1-PS4, when a K7 normally open contact is closed, the flow display instrument starts to work and monitors in real time to display current flow information, when the K7 is normally open and is disconnected, the flow display instrument stops working, and when the K7 is closed again, the flow meter is cleared and starts to work again.
Oil pump motor control part:
after the control power supply is transformed by a transformer, the control power supply is output through fuses F7 and F5 and is firstly connected with a normally closed contact of a P counter, after the P is normally closed, one path of the control power supply is connected with a normally closed contact of a K6 time relay, the output of K6 is connected with a normally open contact of a K7 intermediate relay, and the normally open output of K7 is connected with a normally closed contact of a K8 alternating current contactor. The other path is connected with the normally closed contacts of K2, K3, K4 and K5 which are connected in series, the normally closed output of K5 is connected with an S3 button switch,
and after the output of S3, the power input of a time relay K6, the electromagnetic coil of an alternating current contactor K8 and the normally open contact of K6 are respectively connected, after the normally open output of K6, the normally open contacts of the flow meters PS1-PS4 and the normally closed contact of an alternating current contactor K8 are respectively connected, after the normally closed contact of K8 is output, one path is connected with the normally open contact of an intermediate relay K7, and the other path is connected with the electromagnetic coil of an intermediate relay K7 through the normally closed contact of K8. The normally open outputs of the flow meters PS1-PS4 are respectively connected with the electromagnetic coils of K2-K5.
SP1-SP4 are pressure indicators that remotely measure the operating pressure within the meter for ease of regulation.
The counter P is mainly used for recording the on-off times of K2-K5 and K7 in real time.
The embodiment of the utility model provides a working process as follows:
firstly, pressing a button switch of S2 to close K1, and electrifying normally open input contacts of K2, K3, K4 and K5. Then press the button switch S3 with lock, at this time K8 electromagnetic coil is electrified, make K8 normally closed switch open, K7, K5, K4, K3, K2 are not closed, delay switch K6 movements after about several seconds, K2, K3, K4, K5 receive the electricity and close, because the normally closed contact loses the electricity, let S3, K6 lose the electricity again, but another circuit power has already been put through at this time, because K6, K8 lose the electricity, therefore the power is sent to K7 from K6, K8 normally closed contact, K7 is closed, the flow indicator is electrified to close and make K2, K3, K4, K5 normally closed contact get the electricity again, each electric oil pump motor works.
When any jack rises to the preset interval height value, the liquid display instrument value corresponding to the jack reaches the preset interval height value, the alternating current contactor connected with the jack acts, at the moment, the electric oil pump motor is powered off to stop for waiting, and at the moment, the rest jacks still continue to rise.
When all the jacks ascend to the preset interval height value, all the jacks complete the ascending process in one interval. At this time, the power of S3 is turned on again, the normally closed contacts of the series ac contactors K2, K3, K4, and K5 connected to the S3 push switch are turned on, the electric oil pump motors are operated again, and the next round section ascending process is started.
In the whole process, the counter is always operated, when the set total height value is reached, the normally closed contact of the relay of the counter P is normally opened, the alternating current contactor K2-K5 is completely de-energized, and each electric oil pump motor is stopped. So that the whole lifting process of the jack is completed.
Right the utility model discloses the actual measurement result shows, when rising to 150mm height, maximum error 1mm between each jack.
The whole ultrahigh-pressure electric separated type synchronous jack is synchronously jacked by stages, so that the synchronism is good, and the control precision is high. Meanwhile, automatic control and central control are realized.
Of course, under the inventive concept of the present invention, the present invention has various embodiments, such as using an electric high-pressure oil pump, using a solenoid valve, a check valve, a pressure switch and a pressure sensor, and controlling the rising time of each jack by a time relay through precise calculation. The structure form is basically the same as the utility model, and it is obvious to those skilled in the art that the structure form can be reproduced without creative work after reading the specification, and the structure form is not described in detail. Furthermore, the utility model discloses also be applicable to the adoption by motor, high-pressure oil pump, high-pressure overflow valve, switching-over valve and high pressure fuel pipe, the electric oil pump that the oil tank is constituteed, its principle is the same. An electric oil pump capable of maintaining pressure is also used, and the bidirectional hydraulic lock can be omitted. The intermediate relay K7 may be replaced by another relay or an ac contactor. The signal lamp can be replaced by a digital display device. The adoption of the equivalent alternatives described above certainly falls within the scope of protection of the present invention. Under the condition of low requirement on the synchronization precision, an ultrahigh-pressure electric oil pump can be used, a mechanical synchronization valve is adopted, and a plurality of jacks are controlled to be synchronously jacked. Automatic control and central control are realized.
Claims (6)
1. An ultrahigh-pressure electric separation type synchronous jack comprises a plurality of ultrahigh-pressure electric separation type jacks, each jack is composed of an ultrahigh-pressure electric oil pump, a jack and a high-pressure oil pipe for connecting the jack and the ultrahigh-pressure electric oil pump,
the ultrahigh pressure electric oil pump consists of a motor, a high pressure oil pump, a high pressure overflow valve, a reversing valve, a high pressure oil pipe and an oil tank,
the jack mainly comprises an oil cylinder, a piston and a guide cover,
the method is characterized in that:
a liquid flowmeter PS is also arranged in the high-pressure oil pipe,
it also includes a flow display instrument with relay PS and flow probe SR, the described flow probe SR is placed in the described liquid flowmeter PS,
the flow probe SR1-SRn installed in the liquid flowmeter PS1-PSn detects the flow value flowing through the high pressure oil pipe and transmits the flow value to the flow display instrument, the electric signal output end reflecting the flow value is connected with the relay PS in the flow display instrument,
it also includes a central controller, the central controller is composed of fuse, transformer, AC contactor K1, K8, AC contactor K11-K1n, intermediate relay K7, time relay K6, button switch S1, S2, button switch with lock S3, counter with relay P, proximity sensor SQ,
the connected 380V three-phase power supply is connected with a normally open contact of an alternating current contactor K1 through a fuse, meanwhile, two phases 380V are connected with a primary side of a transformer, the normally open contact output of a K1 is connected with the normally open contact of an alternating current contactor K11-K1n, the normally open contact output of a K11-K1n is connected with a motor M1-Mn in each ultrahigh-voltage electric oil pump,
one group of taps of the secondary coil of the transformer are connected with the power supply end of the flow indicator PS1-PSn and the normally closed contact of the counter P through a fuse,
the normally open output of the flow meter PS1-PSn is respectively connected with the electromagnetic coils of K11-K1n,
the normally closed output of the relay of the counter P is connected with the normally closed contact of the time relay K6 at one path, the output of the K6 is connected with the normally open contact of the intermediate relay K7, the normally open output of the intermediate relay K7 is connected with the normally closed contact of the AC contactor K8 at the other path, the normally closed contact of the AC contactor K11-K1n connected in series is connected with the button switch S3 at the other path, the power input of the time relay K6, the electromagnetic coil of the AC contactor K8 and the normally open contact of the K6 are respectively connected after the output of the S3, the normally open contact of the K6 is respectively connected with the normally open contact of the flow meter PS1-PSn and the normally closed contact of the AC contactor K8 after the output of the normally closed contact of the K8, the normally open contact of the intermediate relay K7 at one path and the electromagnetic coil of the,
and an intermediate relay K7 is connected in series with a power supply circuit of the flow display instrument PS 1-PSn.
2. The extra-high pressure electric disconnect-type synchronous jack of claim 1, wherein: each ultrahigh-pressure electric oil pump also comprises a low-pressure overflow valve and a low-pressure oil pump.
3. The extra-high pressure electric disconnect-type synchronous jack of claim 1, wherein: each jack also comprises a bidirectional hydraulic lock.
4. The extra-high voltage electric disconnect-type synchronous jack of any one of claims 1, 2 or 3, wherein: the central controller also comprises a red signal lamp H1, red signal lamps H11-H1n, a green signal lamp H2 and a green signal lamp H21-H2n, normally closed contacts of the alternating current contactors K1 and K11-K1n are respectively connected with the red signal lamp H1 and the red signal lamps H11-H1n, and normally open contacts of the alternating current contactors K1 and K11-K1n are respectively connected with the green signal lamps H2 and the green signal lamps H21-H2 n.
5. The extra-high voltage electric disconnect-type synchronous jack of any one of claims 1, 2 or 3, wherein: and an inverter is also connected in parallel to a power supply circuit of the central controller.
6. The extra-high voltage electric disconnect-type synchronous jack of any one of claims 1, 2 or 3, wherein: and the high-pressure oil pipe connected with each jack is also connected with a pressure indicator SP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620126903 CN200955001Y (en) | 2006-10-20 | 2006-10-20 | Super-high-voltage electric separation type synchronous jack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620126903 CN200955001Y (en) | 2006-10-20 | 2006-10-20 | Super-high-voltage electric separation type synchronous jack |
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| CN200955001Y true CN200955001Y (en) | 2007-10-03 |
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| CN 200620126903 Expired - Fee Related CN200955001Y (en) | 2006-10-20 | 2006-10-20 | Super-high-voltage electric separation type synchronous jack |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923037A (en) * | 2012-10-26 | 2013-02-13 | 青特集团有限公司 | Safe lifting oil piping system of dumper |
| CN103078455A (en) * | 2012-12-27 | 2013-05-01 | 鞍山钢铁集团公司 | Mounting device and use method for motor end cover |
| CN104697846A (en) * | 2013-12-09 | 2015-06-10 | 株式会社岛津制作所 | Material testing machine |
| CN105060158A (en) * | 2015-08-19 | 2015-11-18 | 张宏生 | Double-acting hydraulic jack |
| CN105776058A (en) * | 2016-04-01 | 2016-07-20 | 天津天大滨海船舶与海洋工程研究院有限公司 | Control method of synchronizing lifting heights of multiple lifters |
-
2006
- 2006-10-20 CN CN 200620126903 patent/CN200955001Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102923037A (en) * | 2012-10-26 | 2013-02-13 | 青特集团有限公司 | Safe lifting oil piping system of dumper |
| CN103078455A (en) * | 2012-12-27 | 2013-05-01 | 鞍山钢铁集团公司 | Mounting device and use method for motor end cover |
| CN103078455B (en) * | 2012-12-27 | 2015-05-27 | 鞍山钢铁集团公司 | Mounting device and use method for motor end cover |
| CN104697846A (en) * | 2013-12-09 | 2015-06-10 | 株式会社岛津制作所 | Material testing machine |
| CN104697846B (en) * | 2013-12-09 | 2017-07-07 | 株式会社岛津制作所 | Material testing machine |
| CN105060158A (en) * | 2015-08-19 | 2015-11-18 | 张宏生 | Double-acting hydraulic jack |
| CN105776058A (en) * | 2016-04-01 | 2016-07-20 | 天津天大滨海船舶与海洋工程研究院有限公司 | Control method of synchronizing lifting heights of multiple lifters |
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Granted publication date: 20071003 Termination date: 20091120 |