CN104895018A - Hydraulic hoist emergent operating device - Google Patents
Hydraulic hoist emergent operating device Download PDFInfo
- Publication number
- CN104895018A CN104895018A CN201510377351.9A CN201510377351A CN104895018A CN 104895018 A CN104895018 A CN 104895018A CN 201510377351 A CN201510377351 A CN 201510377351A CN 104895018 A CN104895018 A CN 104895018A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- valve
- flexible pipe
- soon
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention discloses a hydraulic hoist emergent operating device, which comprises a fuel engine hydraulic pump unit, wherein the fuel engine hydraulic pump unit is connected with a hydraulic control module; a first quick-connect hose, a second quick-connect hose, a third quick-connect hose, a fourth quick-connect hose and a fifth quick-connect hose are arranged on the hydraulic control module, wherein the first quick-connect hose is connected with the rod port of an oil cylinder of the hydraulic hoist, the second quick-connect hose is connected with head port of the oil cylinder of the hydraulic hoist, the third quick-connect hose is connected with a control pipeline of the oil cylinder of the hydraulic hoist, and the fourth quick-connect hose and the fifth quick-connect hose are connected with an oil tank of a pump station of the hydraulic hoist; the first quick-connect hose, the second quick-connect hose and the third quick-connect hose are respectively provided with a ball valve; a hand-operated direction valve and a pressure gage are also arranged on the hydraulic control module. When the device is used for control the operation of a hydraulic hoist, the driving power is greatly reduced by lowering the operation speed to a reasonable range, the requirement for carrying emergent operations on a gate can be met by only arranging a miniature fuel engine, and the purposes of low carbon and environmental protection are realized. Therefore, the device provided by the invention has outstanding economic benefit and social benefit.
Description
Technical field
The present invention relates to hydraulic hoist control field, particularly relate to a kind of emergency operation device of hydraulic hoist being applied to hydraulic engineering, hydroelectric project and maritime engineering.
Background technology
Current, in hydraulic engineering, hydroelectric project and maritime engineering, the application of hydraulic hoist is more and more extensive.But the Service gate of hydraulic engineering, hydroelectric project and shipping work generally has the requirement on unlatching and shut-in time, if by gate opening or closedown within the regular hour, can not will produce loss in various degree, even can produce serious consequence.As hydroelectric project Service gate because headstock gear power supply, electrical control system or electrical fault can not be closed a large amount of for waste electrical generation water resource in time, the flood discharge that may affect reservoir can not be opened within the regular hour, likely the impact in safety be produced on dam.And flood protection water conservancy project gate is not as closed the flood by directly affecting city area in time, likely affect drainning off floodwaters of city as do not opened at the appointed time.And when the supply of hydraulic switch electromechanical source or electrical control system break down, or when hoist electric motivation breaks down, headstock gear can not work, and can not carry out closing or opening within the regular hour, will produce loss in various degree.And the counter-measure broken down for power supply supply is at present configuration diesel-driven generator, but the power of diesel-driven generator configuration can not be less than the motor power (output) of headstock gear, thus, volume is larger, and special diesel motor compartment and a series of control system will be had, cost of investment is high, less economical.And also there is no good emergency measure when at present headstock gear electrical control system or motor being broken down.
Summary of the invention
Based on the problem existing for above-mentioned prior art, the invention provides a kind of hydraulic hoist emergency operation device, this device is when the supply of hydraulic switch electromechanical source, electrical control system or motor break down, and energy emergency flight control hydraulic hoist carries out enabling and the door-closing operation of gate.
For solving the problems of the technologies described above, the invention provides a kind of hydraulic hoist emergency operation device, comprising:
Oil-burning machine hydraulic pump group, with hydraulic regulating model calling;
Described hydraulic regulating module is respectively equipped with and connects connecing flexible pipe one soon, connecting connecing flexible pipe two soon, connecting connecing flexible pipe three soon and connecting connecing flexible pipe four soon and connecing flexible pipe five soon of hydraulic hoist pumping plant fuel tank of oil cylinder of hydraulic headstock gear control piper of hydraulic hoist oil cylinder rodless cavity of hydraulic hoist cylinder rod chamber; Described connecing soon on flexible pipe one, two, three is respectively equipped with ball valve;
Described hydraulic regulating module is also provided with hand-operated direction valve and pressure meter.
Beneficial effect of the present invention is: coordinated with hydraulic regulating module by oil-burning machine hydraulic pump group, and arrange in hydraulic regulating module and connect the oil cylinder of hydraulic hoist, each of fuel tank and connect flexible pipe soon, facilitate the oil cylinder of this device and hydraulic hoist, fuel tank is connected fast, thus can when hydraulic switch electromechanical source or motor break down, emergency flight control hydraulic hoist carries out enabling and the door-closing operation of gate, reduce because of fault causes gate can not the loss that causes of switch; And this device is when hydraulic control headstock gear operates, and service speed is reduced in rational scope, greatly reduces driving power by hydraulic regulating module, only the requirement that miniature oil-burning machine can meet emergency operation gate need be configured, low-carbon (LC), environmental protection.Therefore this technological invention economic benefit and social benefit are very outstanding.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
The hydraulic hoist emergency operation device schematic diagram that Fig. 1 provides for the embodiment of the present invention;
The theory structure schematic diagram of the hydraulic regulating module that Fig. 2 provides for the embodiment of the present invention;
The parts that in figure, each label is corresponding are: 1-oil-burning machine hydraulic pump group; 21-Variable plunger pump; 2-hydraulic regulating module; 31-first one way valve; 41-first overflow valve; 51-second one way valve; 52-the 3rd one way valve; 71-first pressure measuring tie-in; 72-second pressure measuring tie-in; 73-the 3rd pressure measuring tie-in; 81-first pressure meter; 83-second pressure meter; 101-second overflow valve; 102-the 3rd overflow valve; 111-first one-way throttle valve; 112-second one-way throttle valve; 3-hand-operated direction valve; 4-ball valve one; 5-ball valve two; 6-ball valve three; 7-connects flexible pipe one soon; 8-connects flexible pipe two soon; 9-connects flexible pipe three soon; 10-the 3rd pressure meter; 11-connects flexible pipe four soon; 12-connects flexible pipe five soon; 13-movable base.
Detailed description of the invention
Be clearly and completely described the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to protection scope of the present invention.
Figure 1 shows that a kind of hydraulic hoist emergency operation device that the embodiment of the present invention provides, can when hydraulic switch electromechanical source or motor break down, emergency flight control hydraulic hoist carries out enabling and the door-closing operation of gate, reduce because of fault causes gate can not the loss that causes of switch, comprising:
Oil-burning machine hydraulic pump group, with hydraulic regulating model calling;
Described hydraulic regulating module is respectively equipped with and connects connecing flexible pipe one soon, connecting connecing flexible pipe two soon, connecting connecing flexible pipe three soon and connecting connecing flexible pipe four soon and connecing flexible pipe five soon of hydraulic hoist pumping plant fuel tank of oil cylinder of hydraulic headstock gear control piper of hydraulic hoist oil cylinder rodless cavity of hydraulic hoist cylinder rod chamber; Described connecing soon on flexible pipe one, two, three is respectively equipped with ball valve;
Described hydraulic regulating module is also provided with hand-operated direction valve and pressure meter.
As shown in Figure 2, the parts that in figure, each label is corresponding are the theory structure of the hydraulic regulating module in said apparatus: 21-Variable plunger pump; 31-first one way valve; 41-first overflow valve; 51-second one way valve; 52-the 3rd one way valve; 71-first pressure measuring tie-in; 72-second pressure measuring tie-in; 73-the 3rd pressure measuring tie-in; 81-first pressure meter; 83-second pressure meter; 101-second overflow valve; 102-the 3rd overflow valve; 111-first one-way throttle valve; 112-second one-way throttle valve; Each parts of this hydraulic regulating module specifically connect: describedly connect the ball valve one that flexible pipe one connects soon and be connected with the first valve of described hand-operated direction valve with the first one-way throttle valve with the second one-way throttle valve be successively set on this pipeline by the road, and the first valve of described hand-operated direction valve by the road, the first one way valve is connected with described oil-burning machine hydraulic pump group;
The described ball valve three connecing flexible pipe three connection is soon connected with the described flexible pipe four that connects soon with the second overflow valve be successively set on this pipeline and the second one way valve by the road;
Described connect soon flexible pipe two connect ball valve two by the road and the 3rd overflow valve be arranged on this pipeline be connected on the pipeline between described ball valve three and the second overflow valve;
The described flexible pipe four that connects soon is connected on the pipeline between described hand-operated direction valve and described first one way valve through the first overflow valve;
The described flexible pipe five that connects soon is connected to described oil-burning machine hydraulic pump group;
Second valve of described hand-operated direction valve is connected on the pipeline at described second overflow valve two ends with the 3rd one way valve be arranged on this pipeline by the road;
Described first one way valve is connected the first pressure meter with on the pipeline between described hand-operated direction valve
Pipeline between described ball valve one with described second one-way throttle valve is connected the second pressure meter;
Pipeline between described ball valve three with described second overflow valve is connected the 3rd pressure meter.
In above-mentioned hydraulic regulating module, described first pressure meter place pipeline is provided with the first pressure measuring tie-in; Described second pressure meter place pipeline is provided with the second pressure measuring tie-in; Described 3rd pressure meter place pipeline is provided with the 3rd pressure measuring tie-in.Each working line pressure conveniently can be tested by the pressure measuring tie-in arranged.
Oil-burning machine hydraulic pump group in said apparatus adopts gasoline engine hydraulic pump group or diesel engine hydraulic pump group; The miniature oil-burning machine connection that preferred oil-burning machine hydraulic pump group is 8kw ~ 22kw by power drives the Variable plunger pump as hydraulic pump group to form.
Said apparatus also comprises: with the movable base of wheel, and oil-burning machine hydraulic pump group and hydraulic regulating module are all located on this movable base, like this can easy to use time move this emergency operation device.Movable base can adopt base plate to have the travelling car of wheel.
Below in conjunction with specific embodiment, emergency operation device of the present invention is described further.
The present invention a kind ofly emergency flight control hydraulic hoist can carry out the enabling of gate and the device of door-closing operation when hydraulic switch electromechanical source or motor break down.As shown in Figure 1, this device is by oil-burning machine hydraulic pump group 1, the Hydraulic Adjustable Speed be connected with oil-burning machine hydraulic pump group 1, the hydraulic regulating module 2 of control and protection, be located at connecing flexible pipe 1 soon, connect flexible pipe 28 soon, connect flexible pipe 39 soon, connect flexible pipe 4 11 and connect flexible pipe 5 12 soon soon in hydraulic regulating module 2 respectively, connect flexible pipe 1 soon, connect flexible pipe 28 and connect soon on flexible pipe 39 and be respectively equipped with ball valve 1, ball valve 25, ball valve 36 soon; And the hand-operated direction valve 3 be located in hydraulic regulating module 2 and pressure meter 10.During use, connect flexible pipe 1 soon and be connected with the rod chamber of oil cylinder of hydraulic headstock gear; Connect flexible pipe 28 to be soon connected with the rodless cavity of oil cylinder of hydraulic headstock gear; Connect flexible pipe 39 to be soon connected with the control piper of oil cylinder of hydraulic headstock gear; Connect flexible pipe 4 11 to be soon connected with hydraulic switch pump station fuel tank with quick flexible pipe 5 12.The pressure meter 10 arranged, can the operating oil pressure of real-time displaying device; Hydraulic regulating module 2 can regulate the service speed of this device, control and pressure protect, prevents the pressure caused due to a variety of causes from exceeding design load and the destruction that may produce this device.
Further, oil-burning machine hydraulic pump group 1 and hydraulic regulating module 2 are all fixedly located on the travelling car as movable base 13, can make the movement flexibly of this device, add flexibility, applicability, portability and versatility.
When the supply of hydraulic switch electromechanical source is broken down, or when hoist electric motivation breaks down, the principle of this emergency operation device emergency operation hydraulic hoist starting gate is: be connected connecing flexible pipe 1 soon with the rod chamber of oil cylinder of hydraulic headstock gear; Connect flexible pipe 28 to be soon connected with the rodless cavity of oil cylinder of hydraulic headstock gear; Connect flexible pipe 39 to be soon connected with the control piper of oil cylinder of hydraulic headstock gear; Connect flexible pipe 4 11 to be soon connected with hydraulic switch pump station fuel tank with quick flexible pipe 5 12, open ball valve 1, ball valve 25 and ball valve 36.Start petrol and diesel oil machine hydraulic pump group 1, the hydraulic oil of hydraulic switch pump station fuel tank enters hydraulic regulating module 2 by quick flexible pipe 5 12, hand-operated direction valve 3 is switched to starting gate position shelves, pressurized hydraulic oil enters hydraulic hoist control piper and cylinder rod chamber respectively by connecing flexible pipe 39 soon and connecing flexible pipe 1 soon, the hydraulic oil of hydraulic hoist rodless cavity gets back to hydraulic regulating module 2 by connecing flexible pipe 28 soon, and enter hydraulic switch pump station fuel tank for 4 11 times by connecing flexible pipe soon, the piston rod of hydraulic hoist is made to make retracting action, thus opening movement made by operation gate.
The principle of this device emergency operation hydraulic hoist closed shutter is: be connected connecing flexible pipe 1 soon with the rod chamber of oil cylinder of hydraulic headstock gear; Connect flexible pipe 28 to be soon connected with the rodless cavity of oil cylinder of hydraulic headstock gear; Connect flexible pipe 39 to be soon connected with the control piper of oil cylinder of hydraulic headstock gear; Connect flexible pipe 4 11 to be soon connected with hydraulic switch pump station fuel tank with quick flexible pipe 5 12, open ball valve 1, ball valve 25 and ball valve 36.Start petrol and diesel oil machine hydraulic pump group 1, the hydraulic oil of hydraulic switch pump station fuel tank enters hydraulic regulating module 2 by quick flexible pipe 5 12, hand-operated direction valve 3 is switched to closed shutter position shelves, pressurized hydraulic oil enters hydraulic hoist control piper and oil cylinder rodless cavity respectively by connecing flexible pipe 39 soon and connecing flexible pipe 28 soon, the hydraulic oil of hydraulic hoist rod chamber gets back to hydraulic regulating module 2 by connecing flexible pipe 1 soon, and enter hydraulic switch pump station fuel tank for 4 11 times by connecing flexible pipe soon, the piston rod of hydraulic hoist is made to make extend action, thus closing movement made by operation gate.
The emergency operation device of the present embodiment can be applicable to hydraulic engineering, hydroelectric project and shipping working hydraulic pressure headstock gear, enabling and the door-closing operation of gate can be carried out by energy emergency flight control hydraulic hoist when hydraulic switch electromechanical source or motor break down, avoid because gate can not be opened or close the loss caused in official hour.This device, when hydraulic control headstock gear operates, by service speed being reduced in rational scope, greatly reduces driving power, only need configure the requirement that Miniature (bavin) oil machine can meet emergency operation gate, low-carbon (LC), environmental protection.Therefore this technological invention economic benefit and social benefit are very outstanding.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (6)
1. a hydraulic hoist emergency operation device, is characterized in that, comprising:
Oil-burning machine hydraulic pump group, with hydraulic regulating model calling;
Described hydraulic regulating module is respectively equipped with and connects connecing flexible pipe one soon, connecting connecing flexible pipe two soon, connecting connecing flexible pipe three soon and connecting connecing flexible pipe four soon and connecing flexible pipe five soon of hydraulic hoist pumping plant fuel tank of oil cylinder of hydraulic headstock gear control piper of hydraulic hoist oil cylinder rodless cavity of hydraulic hoist cylinder rod chamber; Described connecing soon on flexible pipe one, two, three is respectively equipped with ball valve;
Described hydraulic regulating module is also provided with hand-operated direction valve and pressure meter.
2. hydraulic hoist emergency operation device according to claim 1, is characterized in that, described hydraulic regulating modular structure is:
Describedly connect the ball valve one that flexible pipe one connects soon and be connected with the first valve of described hand-operated direction valve with the first one-way throttle valve with the second one-way throttle valve be successively set on this pipeline by the road, the first valve of described hand-operated direction valve by the road, the first one way valve is connected with described oil-burning machine hydraulic pump group;
The described ball valve three connecing flexible pipe three connection is soon connected with the described flexible pipe four that connects soon with the second overflow valve be successively set on this pipeline and the second one way valve by the road;
Described connect soon flexible pipe two connect ball valve two by the road and the 3rd overflow valve be arranged on this pipeline be connected on the pipeline between described ball valve three and the second overflow valve;
The described flexible pipe four that connects soon is connected on the pipeline between described hand-operated direction valve and described first one way valve through the first overflow valve;
The described flexible pipe five that connects soon is connected to described oil-burning machine hydraulic pump group;
Second valve of described hand-operated direction valve is connected on the pipeline at described second overflow valve two ends with the 3rd one way valve be arranged on this pipeline by the road;
Described first one way valve is connected the first pressure meter with on the pipeline between described hand-operated direction valve
Pipeline between described ball valve one with described second one-way throttle valve is connected the second pressure meter;
Pipeline between described ball valve three with described second overflow valve is connected the 3rd pressure meter.
3. hydraulic hoist emergency operation device according to claim 2, is characterized in that,
Described first pressure meter place pipeline is provided with the first pressure measuring tie-in;
Described second pressure meter place pipeline is provided with the second pressure measuring tie-in;
Described 3rd pressure meter place pipeline is provided with the 3rd pressure measuring tie-in.
4. hydraulic hoist emergency operation device according to claim 1, is characterized in that, described oil-burning machine hydraulic pump group adopts gasoline engine hydraulic pump group or diesel engine hydraulic pump group.
5. the hydraulic hoist emergency operation device according to claim 1 or 4, is characterized in that, the miniature oil-burning machine connection that described oil-burning machine hydraulic pump group is 8kw ~ 22kw by power drives the Variable plunger pump as hydraulic pump group to form.
6. the hydraulic hoist emergency operation device according to any one of claims 1 to 3, is characterized in that, also comprise: with the movable base of wheel, oil-burning machine hydraulic pump group and hydraulic regulating module are all located on this movable base.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510377351.9A CN104895018B (en) | 2015-06-30 | 2015-06-30 | Hydraulic headstock gear emergency operation device |
| PCT/CN2016/074467 WO2017000568A1 (en) | 2015-06-30 | 2016-02-24 | Hydraulic headstock gear emergency operating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510377351.9A CN104895018B (en) | 2015-06-30 | 2015-06-30 | Hydraulic headstock gear emergency operation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104895018A true CN104895018A (en) | 2015-09-09 |
| CN104895018B CN104895018B (en) | 2016-08-24 |
Family
ID=54027948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510377351.9A Active CN104895018B (en) | 2015-06-30 | 2015-06-30 | Hydraulic headstock gear emergency operation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104895018B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017000568A1 (en) * | 2015-06-30 | 2017-01-05 | 北京世纪合兴起重科技有限公司 | Hydraulic headstock gear emergency operating device |
| CN107059935A (en) * | 2017-06-13 | 2017-08-18 | 中冶赛迪装备有限公司 | Portable control device for hydraulic pressure escape manhole |
| CN107366650A (en) * | 2017-08-30 | 2017-11-21 | 常州液压成套设备厂有限公司 | Spillway hydraulic hoist system with emergency function |
| CN109826998A (en) * | 2019-03-20 | 2019-05-31 | 王旭斌 | Screw open-close machine hydraulic control emergency operation equipment |
| CN110778274A (en) * | 2019-11-28 | 2020-02-11 | 陕西延长石油（集团）有限责任公司 | Drill bit for petroleum geological exploration and installation method |
| WO2020186841A1 (en) * | 2019-03-20 | 2020-09-24 | 北京世纪合兴起重科技有限公司 | Hydraulic control emergency operation device for screw hoist |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1836110A (en) * | 2003-08-20 | 2006-09-20 | 株式会社小松制作所 | Hydraulic drive control device |
| GB2431436A (en) * | 2003-08-20 | 2007-04-25 | Komatsu Mfg Co Ltd | Hydraulic drive with engine control on quick return and circuit interlinking |
| CN202108032U (en) * | 2011-04-12 | 2012-01-11 | 高冬 | Emergency operating device and gate system of winch hoist |
| CN202794953U (en) * | 2012-08-17 | 2013-03-13 | 长江勘测规划设计研究有限责任公司 | Electric screw hoist top brake accident automatic control device |
| CN204753520U (en) * | 2015-06-30 | 2015-11-11 | 北京世纪合兴起重科技有限公司 | Emergent operating means of hydraulic pressure headstock gear |
-
2015
- 2015-06-30 CN CN201510377351.9A patent/CN104895018B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1836110A (en) * | 2003-08-20 | 2006-09-20 | 株式会社小松制作所 | Hydraulic drive control device |
| GB2431436A (en) * | 2003-08-20 | 2007-04-25 | Komatsu Mfg Co Ltd | Hydraulic drive with engine control on quick return and circuit interlinking |
| CN202108032U (en) * | 2011-04-12 | 2012-01-11 | 高冬 | Emergency operating device and gate system of winch hoist |
| CN202794953U (en) * | 2012-08-17 | 2013-03-13 | 长江勘测规划设计研究有限责任公司 | Electric screw hoist top brake accident automatic control device |
| CN204753520U (en) * | 2015-06-30 | 2015-11-11 | 北京世纪合兴起重科技有限公司 | Emergent operating means of hydraulic pressure headstock gear |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017000568A1 (en) * | 2015-06-30 | 2017-01-05 | 北京世纪合兴起重科技有限公司 | Hydraulic headstock gear emergency operating device |
| CN107059935A (en) * | 2017-06-13 | 2017-08-18 | 中冶赛迪装备有限公司 | Portable control device for hydraulic pressure escape manhole |
| CN107366650A (en) * | 2017-08-30 | 2017-11-21 | 常州液压成套设备厂有限公司 | Spillway hydraulic hoist system with emergency function |
| CN109826998A (en) * | 2019-03-20 | 2019-05-31 | 王旭斌 | Screw open-close machine hydraulic control emergency operation equipment |
| WO2020186841A1 (en) * | 2019-03-20 | 2020-09-24 | 北京世纪合兴起重科技有限公司 | Hydraulic control emergency operation device for screw hoist |
| CN109826998B (en) * | 2019-03-20 | 2024-03-08 | 北京世纪合兴起重科技有限公司 | Hydraulic control emergency operation equipment for screw hoist |
| CN110778274A (en) * | 2019-11-28 | 2020-02-11 | 陕西延长石油（集团）有限责任公司 | Drill bit for petroleum geological exploration and installation method |
| CN110778274B (en) * | 2019-11-28 | 2020-09-25 | 陕西延长石油（集团）有限责任公司 | Drill bit for petroleum geological exploration and installation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104895018B (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104895018A (en) | Hydraulic hoist emergent operating device | |
| CN204591828U (en) | Multi-hydraulic-cylinder walks abreast independent loads energy conservation test system | |
| CN102589823B (en) | Airtightness test and nitrogen replacement device used for high-pressure air cylinder | |
| CN201450274U (en) | Mobile transmission line electrified water flushing device | |
| CN204753520U (en) | Emergent operating means of hydraulic pressure headstock gear | |
| CN102381230A (en) | Demountable tanker truck and hydraulic system thereof | |
| CN106223391A (en) | A kind of excavator energy regenerating and utilize system | |
| CN201679671U (en) | Mobile emergency pump station | |
| CN103321975A (en) | Low-high pressure soft-start hydraulic oil source system | |
| CN203602243U (en) | Double-power hydraulic material grabbing machine | |
| CN202926295U (en) | Cluster-type hydraulic pressure pumping unit | |
| CN203348184U (en) | Hydraulic control device for offshore wind power piling | |
| CN203463382U (en) | Low-high pressure soft start hydraulic oil source system | |
| CN202756171U (en) | Impulse water turbine control system | |
| CN205243749U (en) | Piston concrete pump | |
| CN205001264U (en) | High pressure air spring | |
| WO2017000568A1 (en) | Hydraulic headstock gear emergency operating device | |
| CN202326001U (en) | Integrated hydraulic turbine control system | |
| CN201190628Y (en) | Novel cylinder valve control system | |
| CN204267426U (en) | A kind of piston type cylinder pressure testing device | |
| CN207485772U (en) | A kind of hydraulic power station intelligent checking system | |
| CN203488289U (en) | Oil exit pipe of sealed type fuel oil discharging device | |
| CN207004970U (en) | A kind of forcing press | |
| CN102309830B (en) | High-pressure water conveying system and water supply device | |
| CN201801331U (en) | Self-suction type oil cylinder anti-overturn device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |