CN1218342C - Hydraulic operation device - Google Patents
Hydraulic operation device Download PDFInfo
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- CN1218342C CN1218342C CN991080777A CN99108077A CN1218342C CN 1218342 C CN1218342 C CN 1218342C CN 991080777 A CN991080777 A CN 991080777A CN 99108077 A CN99108077 A CN 99108077A CN 1218342 C CN1218342 C CN 1218342C
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- 239000007788 liquid Substances 0.000 claims abstract description 130
- 230000009471 action Effects 0.000 claims description 51
- 238000012546 transfer Methods 0.000 claims description 26
- 239000012530 fluid Substances 0.000 claims description 25
- 238000010079 rubber tapping Methods 0.000 claims description 24
- 238000007789 sealing Methods 0.000 claims description 19
- 238000003860 storage Methods 0.000 claims description 11
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 20
- 239000012224 working solution Substances 0.000 description 13
- 229910052757 nitrogen Inorganic materials 0.000 description 11
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- 239000002184 metal Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
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- 230000000630 rising effect Effects 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 150000002829 nitrogen Chemical class 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/40—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using screw conveyors thereon
- B60P1/42—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading using screw conveyors thereon mounted on the load-transporting element
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K5/00—Feeding devices for stock or game ; Feeding wagons; Feeding stacks
- A01K5/02—Automatic devices
- A01K5/0258—Automatic devices with endless screws
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P3/00—Vehicles adapted to transport, to carry or to comprise special loads or objects
- B60P3/22—Tank vehicles
- B60P3/224—Tank vehicles comprising auxiliary devices, e.g. for unloading or level indicating
- B60P3/2245—Adaptations for loading or unloading
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/10—Road Vehicles
- B60Y2200/14—Trucks; Load vehicles, Busses
- B60Y2200/146—Silo or fluid transporting vehicles
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Environmental Sciences (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Birds (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides a miniaturized, integrated, and reliable hydraulic operation device capable of stably operating with a simple structure. A driving part is provided with a pipeline feeding a high pressure liquid from an accumulator into a first liquid chamber. The pipeline has a double-cylindrical structure with the same axis as a driving cylinder such that the pipeline surrounds around the driving cylinder, while a liquid pressure control part, the accumulator, a pump, a liquid pressure monitor, and a low pressure tank are detachably mounted to a cylinder end.
Description
Technical field
The present invention relates to a kind of apply device that carries out the circuit breaker switching action.
Background technology
In recent years, electricity needs has the trend of increase, and the high capacity of transmission system and superhigh pressureization are developed gradually, and is corresponding therewith, and as the circuit breaker that transmission system adopts, the gas isolated gas-break switch of SF6 has occupied main flow.But when carrying out the circuit breaker switching action, well-known is the operating means that drive source utilizes fluid.Wherein, with in the operating means of gas (compressed air) as drive source, along with the high capacity and the superhigh pressureization of transmission system, actuating force enlarges markedly, the maximization that becomes of equipment such as pneumatic cylinder and gas holder.In addition, the supply and exhaust sound during owing to operation becomes big, needs silencing means, makes equipment become complicated easily.
In contrast, drive source is not to use gas but with the operating means of liquid, promptly so-called apply device has following advantage.At first, liquid reaches high pressure and big outputization, the miniaturization of implement device easily easily because comparing with gas.And when operation because there is not supply and exhaust sound, the noise in the time of can significantly reducing operation, and because the incompressibility of liquid, its response is good.Above-mentioned apply device is expected to become the circuit breaker corresponding driving source of high capacity and superhigh pressureization, and the raising of its performance is also had higher requirement.
Here specify the conventional example of apply device with reference to Fig. 9 and Figure 10.Fig. 9 represents the configuration example of existing apply device, and Figure 10 represents the configuration example of apply device.As shown in Figure 9, the switch portion 1 of circuit breaker is made of fixed electrode 2 and movable electrode 3, and movable electrode 3 is connected with the drive division 20 of apply device 10.The drive division 20 of apply device 10 is by driving cylinder 21, driving driven plunger 22 that cylinder interior slidably inserts and the drive rod 23 that the movable electrode 3 of this driven plunger 22 and circuit breaker side is connected is constituted.
Space in driving cylinder 21 as movable next door, makes driven plunger 22 in drive rod 23 sides and its opposition side and forms the 1st liquid chamber 24 and the 2nd liquid chamber 25 respectively.Hydraulic control portion 30 is connected with the 2nd liquid chamber.Hydraulic control portion 30 is devices of the supply and the discharge of the working solution of the 2nd liquid chamber 25 (pressure fluid) being selected, controlled the hydraulic pressure in the liquid chamber 25.This hydraulic control portion 30 is provided with transfer valve 301 that the supply of Control work liquid discharges and the electromagnetically operated valve 302 that is used to drive this transfer valve 301.But, in the time of can directly driving transfer valve 301, electromagnetically operated valve 302 be not set with solenoid (ソ レ ノ イ ト).This hydraulic control portion 30 directly is connected by pipeline 303 with 24 of the 1st liquid chambers.
The 1st liquid chamber 24 is connected with accumulator (ア キ ユ system レ one ) 400 by the pipeline 401 of high press fit pipe.This accumulator 400 always makes high pressure liquid act on the 1st liquid chamber 24.As this accumulator 400, generally be a side in the container that separates with movable spacer body as nitrogen chamber 400a, its inner nitrogen of filling high pressure is with the high pressure of the compression energy maintenance working solution of this nitrogen.
Be provided with pump unit 500 between hydraulic control portion 30 and accumulator 400, this pump unit is the working solution that the discharge liquor of origin self-hydraulic control part 30 produces high pressure, and supplies with accumulator 400.In the low-pressure cabinets 501 of being packed into such as the motor in the pump unit 500, pump integratedly.Low-pressure cabinet 501 pipeline 304 by low-pressure fitting pipe is connected with above-mentioned hydraulic control portion 30, reclaims the discharge liquor of the 2nd liquid chamber 25 and accumulates the working solution of low pressure.Pump unit 500 is connected with the pipeline 502 of accumulator 400 by high press fit pipe.
Above apply device 10 is packed in the cabinet shown in Figure 10 100 usually.Cabinet 100 is fixed on an end of the gas holder (not shown) of the switch portion 1 that circuit breaker is housed by flange 101.Flange 101 is provided with container 102, and this container 102 is connected with support 103.Support 103 is provided with the auxiliary switching contact 104 with drive rod 23 interlocks, is used to detect the on off state as the switch portion 1 of the signal of telecommunication.The bottom of cabinet 100 is provided with base 105, is fixing accumulator 400 and pump unit 500 on this base 105.
But there is following problem in above-mentioned existing apply device.Though promptly the drive division 20 of apply device 10 and hydraulic control portion 30 constitute one, accumulator 400 and pump unit 500 are separated configuration.Therefore, in order to connect them, be provided with pipeline 304,401,502.When using these pipelines that connect usefulness, the liquid closure of the external leaks of necessary consideration working solution and the pipe arrangement intensity of vibrating with respect to breaker operator.Particularly, accumulator 400 is restricted as pressure vessel, forms the cylindrical vessel (with reference to Figure 10) that radius is little, length is big.Therefore, in order in the driving cylinder 21 of drive division 20 sides, to import the working solution of high pressure from accumulator 400, long pipeline 400 must be arranged.And, parallel in order to make this pipeline 401 with the direction of the axle that drives cylinder 21, must accurately adjust the position.In the prior art, so a plurality of pipelines must be arranged, and must high accuracy determine the requirement of position, cause the high problem of manufacturing cost and installation cost.And when the elongated change of the pipe arrangement of hydraulic pressure transfer path was big, response reduced.
In order to omit high press fit pipe 401, open shown in the clear 60-97522 communique as the spy, consider driving cylinder 21 and accumulator 400 direct-connected structures with drive division 20.But general because the axial length of accumulator 400 is longer than drive division 20 in the time of will driving cylinder 21 and directly be connected with accumulator 400 with such configuration, their cabinet of having packed into becomes big, and this design makes space availability ratio relatively poor, is difficult to make equipment miniaturization.
On the other hand, in accumulator 400, in air chamber 400a, fill high pressure nitrogen with medium as the storage pressure, but in the technology of in the fair 7-6531 communique of spy, putting down in writing, use metal spring, replace the scheme of nitrogen specifically with the disk spring group.But the energy that the unit volume of metal spring or Unit Weight can be accumulated is compared much smaller with gas, the volume and weight that storage splenium branch accounts for compare as the accumulator 400 of medium with gas, very greatly with very heavy.When particularly apply device is used for big capacity and high-tension circuit breaker, must increase considerably the storage pressure energy, but can increase considerably the weight and volume of metal spring this moment.Therefore be difficult to make the whole small integrated of device, and above-mentioned apply device is subjected to only limiting to the restriction of middle low capacity machine.
Therefore, in order to realize the small integrated of apply device, comprising the adaptive apply device to big capacity machine, consideration will be stored up the big gas of pressure energy metric density and be pressed medium to use as storage.Simultaneously, make the further high-pressure trend of system pressure, make that with the raising of nearest breaking technique driving energy reduces, thereby reduce the gentle body capacity of work liquid measure, making each unit miniaturization such as drive division 20, accumulator 400, pump unit 500 also is a kind of scheme of considering.For example, as the public clear 63-47094 communique record of spy,, the method that is provided with a plurality of valve bodies in parts is arranged for hydraulic control portion 30.But such technology makes complex structure and maximization easily, makes manufacturing cost and installation cost increase.
As mentioned above, very urgent for existing apply device to the requirement of its small integrated and cost degradation, but also require to improve its performance.Especially, in order to be adapted to big capacity superhigh pressure circuit breaker, reliability aspects such as the stability of operating rate and fail safe also come into one's own.
Summary of the invention
The present invention is the scheme that proposes in order to address the above problem, and its purpose is: realize small integrated, simple in structure, working stability, good apply device that reliability is high are provided.
In order to achieve the above object, the present invention takes following technical scheme:
A kind of apply device is used to carry out the switch motion of the switch portion of circuit breaker, is provided with: drive cylinder; Driven plunger can be inserted this with being free to slide and drive in the cylinder; Drive rod is used to connect the switch portion of this driven plunger and above-mentioned circuit breaker; The 1st liquid chamber and the 2nd liquid chamber, as spacer body, the above-mentioned drive rod side in above-mentioned driving cylinder and its opposition side form respectively with above-mentioned driven plunger; Hydraulic control portion carries out the supply of pressure fluid of above-mentioned the 2nd liquid chamber or the selection of discharge, the hydraulic pressure in the control liquid chamber; Accumulator makes highly pressurised liquid often act on above-mentioned the 1st liquid chamber; Pump is used for supplying with high pressure liquid to above-mentioned accumulator; Low-pressure cabinet is used to reclaim the discharge liquor of above-mentioned the 2nd liquid chamber and accumulates low hydraulic fluid, and above-mentioned apply device is characterised in that:
The pipeline of supplying with high pressure liquid to above-mentioned the 1st liquid chamber from above-mentioned accumulator covers the outside of above-mentioned driving cylinder, and drives cylinder on same axle with this, and forms dual cylinder.
Described apply device is characterized in that: the part that will fix the cylinder part of the storage pressure part (ア キ ユ system レ one Block ロ Star Network) of above-mentioned accumulator and fixing above-mentioned driving cylinder is provided with integratedly.
In addition, in the described apply device, be formed with in the above-mentioned hydraulic control portion: obtain the feed flow hole of high pressure liquid, the control hole that is communicated with above-mentioned the 2nd liquid chamber and the outage that is communicated with above-mentioned low-pressure cabinet from above-mentioned accumulator often, and being provided with the solenoid that any and above-mentioned control hole in feed flow hole and the outage are selected the transfer valve that is communicated with and made this transfer valve action, above-mentioned feed flow hole also is provided with the flow regulator of the flow that is used to regulate high pressure liquid.
And, form the certain flow path of the high pressure liquid flow through certain flow often in above-mentioned feed flow hole.
In addition, in the described apply device, above-mentioned hydraulic control portion is made of main operation valve portion and the control valve portion that controls this main operation valve portion; Dispose the supplying valve of supplying with the 2nd liquid chamber pressure fluid and from the tapping valve of above-mentioned the 2nd liquid chamber discharge pressure fluid in above-mentioned main operation valve portion, the two is configured in the same action spool basically; Above-mentioned supplying valve is provided with sliding part that slides with above-mentioned tapping valve and the sealing that carries out switch as valve.
Moreover, in the described apply device, be provided with pressure monitor portion, be used to monitor the hydraulic pressure of the high pressure liquid in the above-mentioned accumulator; This pressure monitor portion is provided with: high-pressure passage is taken into high pressure liquid from above-mentioned accumulator; Low-pressure passage can be communicated with high-pressure passage; Safety valve is used for being communicated with high-pressure passage and low-pressure passage high pressure liquid being emitted to low-pressure passage from high-pressure passage when the hydraulic pressure of the high pressure liquid that flows through above-mentioned high-pressure passage surpasses predetermined set value; Cut-off valve is used to be communicated with high-pressure passage and low-pressure passage, and above-mentioned set point is descended.
In addition, in the described apply device, above-mentioned low-pressure cabinet is constituted as separable structure.
Apply device of the present invention has drive division, hydraulic control portion, accumulator, pump, and a plurality of component parts such as low-pressure cabinet, it is characterized in that having following structure.Wherein, drive division comprises: drive cylinder; Driving cylinder interior at this can driving piston sliding; Drive rod, it is connected the switch portion of this driven plunger and above-mentioned circuit breaker; The 1st liquid chamber and the 2nd liquid chamber, drive rod side and its opposition side of its driven plunger in driving cylinder form respectively, and this drive division is the mobile device that makes the switch portion opening and closing of above-mentioned circuit breaker by above-mentioned driven plunger.Hydraulic control portion is the selection that the pressure fluid of above-mentioned the 2nd liquid chamber is supplied with or discharged, the device of control hydraulic pressure, and accumulator is to make high pressure liquid often act on the device of above-mentioned the 1st liquid chamber.Pump is a device from high pressure liquid to above-mentioned accumulator that supply with, and low-pressure cabinet is the device of retrieving the discharge opeing of the 2nd liquid chamber in the self-driven cylinder and accumulating low hydraulic fluid.
The feature of the apply device of the present invention's first scheme is, will be used for supplying with the pipeline of high pressure liquid from above-mentioned accumulator to above-mentioned the 1st liquid chamber, covers the outside of above-mentioned driving cylinder and coaxial with it, and forms 2 layers of cylinder.In structure in the past, need drive cylinder and pipeline with high positional precision configured in parallel, this pipeline is supplied with high pressure liquid from accumulator to the 1st liquid chamber, and its fitting operation is very difficult.And in the present invention,, can solve the difficulty of installing because driving cylinder and above-mentioned pipeline are 2 layers of cylindrical structure, install simply.And the space availability ratio height is realized the miniaturization of machine easily.
The feature of alternative plan of the present invention is in the apply device of the present invention's first scheme, to be provided with the storage pressure part of the fixing above-mentioned accumulator that forms one and a part of fixing the cylinder part of above-mentioned driving cylinder.In the present invention with such structure, by making the integrated of the storage pressure part of fixing above-mentioned accumulator and the cylinder part of fixing above-mentioned driving cylinder, can realize miniaturization and improve intensity, can cut down the pipe arrangement connector and the bolt that are used to connect both, to reduce cost.
The feature of third party's case of the present invention is, in the apply device of the present invention's first scheme, hydraulic control portion have often from above-mentioned accumulator supply with the feed flow hole of high pressure liquid, the control hole that is communicated with above-mentioned the 2nd liquid chamber, the outage that is communicated with above-mentioned low-pressure cabinet, with any and the transfer valve of above-mentioned control hole selection connection and the solenoid that this transfer valve is moved feed flow hole and the outage, above-mentioned feed flow hole is provided with the flow regulator of the flow that is used to regulate high pressure liquid.In the present invention,, can easily regulate the speed of closed circuit action by the effect of flow regulator with this spline structure.
The feature of the cubic case of the present invention is in the apply device of third party's case of the present invention, to form the certain flow path of the high pressure liquid that often flows through certain flow in above-mentioned feed flow hole.In the present invention,, can guarantee stable flow rate, the speed of the closed circuit action of circuit breaker is remained on more than the certain speed owing to often flow through the high pressure liquid of certain flow in the certain flow path.
The feature of the present invention's the 5th scheme is, in the apply device of the present invention's first scheme, hydraulic control portion is made of the control valve portion of main operation valve portion and this main operation valve portion of control, supply with the supplying valve of the 2nd liquid chamber pressure fluid and be configured in from the tapping valve of above-mentioned the 2nd liquid chamber discharge pressure fluid on the roughly same action axle of above-mentioned main operation valve portion, above-mentioned supplying valve is provided with sliding part and the sealing that slides with above-mentioned tapping valve.In the present invention, because supplying valve when action, the action that links together of sliding part and sealing, sliding part and sealing can carry out same action with integrated with it valve.In addition, when tapping valve moved, because the sliding part of supplying valve and tapping valve slide together, sliding part had the effect of auxiliary tapping valve, and the opening degree of tapping valve is increased.Therefore, can discharge a large amount of pressure fluids, can improve the speed of the open circuit action of circuit breaker from the 2nd liquid chamber.
The feature of the present invention's the 6th scheme is, in the apply device of the present invention's first scheme, has the pressure monitor portion of the hydraulic pressure of the high pressure liquid in the above-mentioned accumulator of monitoring, and this pressure monitor portion is provided with: high-pressure passage is taken into high pressure liquid from above-mentioned accumulator; Low-pressure passage can be communicated with high-pressure passage; Safety valve when the hydraulic pressure of the high pressure liquid that flows through above-mentioned high-pressure passage surpasses predetermined set value, is communicated with high-pressure passage and low-pressure passage, and high pressure liquid is emitted to low-pressure passage from high-pressure passage; Cut-off valve is communicated with high-pressure passage and low-pressure passage, and above-mentioned set point is descended.In the present invention with above structure, when the setting of the pressure monitor that carries out pressure monitor portion is regulated, open cut-off valve high-pressure passage and low-pressure passage are communicated with, can easily reduce the pressure of setting by pressure monitor portion.Therefore can carry out the setting of pressure monitor simply and regulate, improve the degree of freedom of the monitoring range of pressure monitor portion.
The feature of the present invention's the 7th scheme is that in the apply device of the present invention's first scheme, low-pressure cabinet has can divided structure.By having this structure, can easily process the shape of case.And, can divided structure by having, even optional feature such as wave absorption plate is installed, also can carry out fitting operation simply in low-pressure cabinet.
The invention effect
According to the present invention,, can finish with simple structure with drive division, hydraulic control portion, accumulator, pump, and formation portion such as low-pressure cabinet when carrying out small integrated.And can improve the performance of hydraulic control portion, energy steady operation, the apply device that reliability is high are provided.
Following with reference to accompanying drawing, the embodiment of the invention is elaborated.
Description of drawings
Fig. 1 is the profile of a representational embodiment of expression apply device integral body.
Fig. 2 is the end view from arrow Y direction of Fig. 1.
Fig. 3 is the end view from the arrow directions X of Fig. 1.
Fig. 4 is the amplification profile of an embodiment of the hydraulic control portion of expression apply device.
Fig. 5 is the amplification profile of an embodiment of the pressure monitor device with safety valve of expression apply device.
Fig. 6 is the amplification profile of an embodiment of the low-pressure cabinet of expression apply device.
Fig. 7 is illustrated in the apply device, the profile of the 2nd embodiment of the fixed part of the nitrogen chamber side of accumulator.
Fig. 8 is the amplification profile of the 2nd embodiment of the hydraulic control portion of expression apply device.
Fig. 9 is the structure legend as the apply device of the drive source use of existing circuit breaker.
Figure 10 is the stravismus legend of the configuration of expression when packing into apply device in the cabinet.
Embodiment
The following embodiment that specifies apply device of the present invention with reference to Fig. 1～Fig. 8.The apply device of following embodiment and Fig. 9 and example in the past shown in Figure 10 similarly have the drive division 20 of the switch portion 1 (being movable electrode 3 more specifically) that drives circuit breaker, represent with prosign for the identical parts of the two, and its explanation is omitted.In addition, the structure of the switch portion 1 of circuit breaker is an example, and electrode in opposite directions also can relatively open and close, and two electrodes in opposite directions can move jointly.
1. the embodiment of apply device integral body
Fig. 1 is the embodiment about apply device integral body of the present invention.Particularly expression is applicable to the profile of the representational embodiment of various occasions.Fig. 2 is the end view from arrow Y direction, and Fig. 3 is the end view from the arrow directions X.
The overall structure of 1-1 apply device 10A
In the drive division 20 of the apply device 10A of present embodiment, the cylinder block of fixed drive cylinder 21 is provided with cylinder head 21b and the terminal 21a of cylinder.As shown in Figure 3, on the top of the terminal 21a of cylinder hydraulic control portion 30 is installed, accumulator 40 is installed near the bottom, they can be by dismounting.Accumulator 40 always produces high pressure liquid to drive division 20.In the terminal 21a of cylinder, in the bottom, left side of Fig. 3 pump 50 is installed, in the left upper portion of Fig. 3 low-pressure cabinet 70 is installed, on the right side of Fig. 3 hydraulic pressure watch-dog 60 is installed, they are respectively removable.Wherein, pump 50 is supplied with high pressure liquid to accumulator 40, and low-pressure cabinet 70 reclaims the discharge liquor of drive division 20 and accumulates low hydraulic fluid.Hydraulic pressure watch-dog 60 is pressure monitor portions of the hydraulic pressure of the high pressure liquid in the monitoring accumulator 40.The terminal 21a detachable of the cylinder by the relative drive division 20 ground installation of above-mentioned each formation portion integratedly turns to a unit.At this moment, form the fluid passage that is communicated with other each formation portion at the terminal 21a of cylinder.
Above having among the integrally-built apply device 10A, on the terminal 21a of the cylinder of drive division 20, hydraulic control portion 30, accumulator 40, pump 50, hydraulic pressure watch-dog 60 are installed, reach low-pressure cabinet 70, and energy dismounting, so compare with existing apply device, do not need pipe arrangement that connects each several part etc.Save the result of pipe arrangement like this, can be than in the past simple in structure, the small integrated of implement device integral body.Can enhance productivity thus, reduce manufacturing cost and installation cost, help saving.And compare with using pipe arrangement, can shorten the hydraulic pressure transfer path, improve response.
Each formation portion of apply device 10A then is described respectively.And illustrated as the action of device integral body in the back for the action of various piece.
1-2 drive division 20
As depicted in figs. 1 and 2, be provided with pipeline 21c at drive division 20, the outside of this pipeline 21c covering driving cylinder 21 is also coaxial with it, forms 2 layers of cylinder.This pipeline 21c is used for providing high pressure liquid from accumulator 40 to the 1st liquid chamber 24.Be provided with guide part 29 in cylinder head 21b side, be used for driving cylinder 21 fixing coaxially with pipeline 21c.Cylinder head 21b also has holding device, when circuit breaker when hydraulic pressure is low under closed circuit state, keeps the state of driven plunger 22, keeps closed circuit state.
By the structure of pipeline 21c with 2 layers of cylinder that drive cylinder 21, the position of the installing relation of regulation cylinder head 21b, the terminal 21a of cylinder and installation easily closely, and space availability ratio height.And, by making the axial length that drives cylinder 21 long more a lot of than pipeline 21c, after the installation of confirming driving cylinder 21, can pipe laying 21c, can improve installation more.In addition,, can suppress to drive the rotation of cylinder 21, can avoid state to keep piston 28a to contact and sticking person with driving cylinder 21 because the slide-and-guide 28c of holding device 28 is connected with driving cylinder 21.
1-3 hydraulic control portion 30
With Fig. 1-Fig. 4 hydraulic control portion 30 is described.Here, the amplification profile of the hydraulic control portion 30 of Fig. 4 presentation graphs 1.As shown in Figure 4, hydraulic control portion 30 comprises: control hole 32, carry out the 2nd liquid chamber 25 of drive division 20 is carried out the selection that pressure fluid is supplied with and discharged; Feed flow hole 33 is by the high pressure liquid of the terminal 21a supply of cylinder from accumulator 40; The outage 34 that is communicated with low-pressure cabinet 70.In control hole 32 and feed flow hole 33, or control hole 32 and 34 of outages are provided with the transfer valve 39 that is used to open and close.This transfer valve 39 passes through valve body 38a, 38b guided slidable, and by being connected with transfer valve 39 in the bight of valve body 38a, 38b, carries out the switching of the switching between each hole.
With transfer valve 39 in abutting connection with being provided with open circuit with solenoid 45 and closed circuit, when solenoid 45 and 46 receives action commands and when being energized, its axle 45a, 46a action separately makes transfer valve 39 actions with solenoid 46.On each solenoid 45,46 screw rod 45b, 46b are housed, the position of the direction of rotation of these screw rods 45b, 46b fixing above-mentioned valve body 38a, 38b, and the position of regulation cross-drilled hole.Form pipeline 45c, 46c at solenoid 45,46.
Be provided with a certain amount of path 33a and flow adjustment path 33b in feed flow hole 33 sides.A certain amount of path 33a supplies with a certain amount of working solution, and flow is adjusted adjustment that path 33b is provided with the closed circuit responsiveness that is used to adjust circuit breaker with variable restrictor portion 37.The speed adjustment is provided with to the outstanding screw rod 37a in outside with restriction 37, adjusts with restriction 37 by regulating the speed from this screw rod of peripheral operation 37a.Symbol 38 among the figure is the parts that constitute hydraulic control portion 30.
In having the hydraulic control portion 30 of above structure,, can guarantee stable flow rate by the path of the certain flow that often flows.Thereby the closed circuit responsiveness that can make circuit breaker keeps can easily carrying out adjusting the trickle adjustment of path to closed circuit responsiveness by flow more than certain speed.And, when hydraulic control portion 30 contingency take place from sealing 39a, the 39b leakage working solution of transfer valve 39,, can prevent the damage of solenoid 45,46 because working solution is promptly flowed out from pipeline 45c, 45b.
1-4 accumulator 40
In Fig. 1 and accumulator 40 shown in Figure 3,,, be fixed on the terminal 21a of cylinder with the terminal 21a integrated setting of cylinder as the parts of accumulator fixed part.Accumulator 40 has the accumulator piston that can slide and insert at internal tank, and the side at the accumulator piston of internal tank forms the nitrogen chamber of filling high pressure nitrogen, forms the liquid-accumulating chamber of accumulating high-pressure work liquid at its opposition side.The compression energy that utilizes this nitrogen is to high-pressure work liquid storage pressure.
Because fixedly the parts of accumulator 40 are connected with the terminal 21a of cylinder, can reduce pipe arrangement connector, screw rod etc., and, can realize miniaturization and strengthen intensity by integrated.
1-5 pump 50
Apply device 10A is when opening a way action and closed circuit action, carrying out along with action, high pressure liquid is consumed, the hydraulic pressure of the fluid reservoir in the accumulator 40 reduces, but the discharge liquor that is reclaimed by low-pressure cabinet 70 is sucked by pump 50 by filter 75 and suction inlet 55, and the starting by pump 50 is unlifting pressure again.
1-6 hydraulic pressure watch-dog 60
With Fig. 1～3 and Fig. 5 hydraulic pressure watch-dog 60 is described below.Here, the expansion profile of the hydraulic pressure watch-dog 60 of Fig. 5 presentation graphs 2.Hydraulic pressure watch-dog 60 is provided with shell 61, forms in the shell 61 and gets the high-pressure passage 61a of high pressure liquid and the low-pressure passage 61b that can be communicated with high-pressure passage 61a from accumulator 40 side-draws.
Also be provided with piston 62 in the shell 61.The displacement of this piston 62 owing to the compression stress of the hydraulic pressure of high-pressure passage 61a and the spring 62a that is located at the back side.Also be provided with a plurality of adjusting bolts 65 with piston 60 interlock in addition, and be provided with near this adjustings bolt 65, be used to detect the displacement switch 66 of the displacement of adjusting bolt 65.
In addition, between high-pressure passage 61a and low-pressure passage 61b, be provided with safety valve 63 and cut-off valve 64.On shell 61, be equipped with and regulate bolt 67, regulate bolt 67 and be provided with the sealing 67a that joins with safety valve 63.Safety valve 63 and piston 62 are often gapped at direction of principal axis, and by introducing the high pressure liquid of piston 62 inside and the effect of piston 63a from high-pressure passage 61a, the sealing 67a of safety valve 63 and adjusting bolt 67 joins and seals.When the hydraulic pressure of the high pressure liquid that flows through high-pressure passage 61a of safety valve 63 surpassed predetermined set value, high-pressure passage 61a is communicated with low-pressure passage 61b made high pressure liquid emit to low-pressure passage 61b from high-pressure passage 61a.Cut-off valve 64 is used to be communicated with high-pressure passage 61a and low-pressure passage 61b and reduces above-mentioned set point.
In having the hydraulic pressure watch-dog 60 of this structure, can often monitor the hydraulic pressure of the liquid-accumulating chamber of accumulator 40 according to the load characteristic of the displacement and the spring 62a of piston 62.Specifically,, make displacement switch 66 actions when the hydraulic pressure of liquid-accumulating chamber 42 is reduced to setting when following, by this displacement switch 66 carry out to the signal controlling of hydraulic control portion 30 and pump 50 running, stop control.At this moment, owing to the bolt 65 of adjusting is arranged respectively, can easily regulate the setting of the hydraulic pressure of each displacement switch 66 when carrying out the open and close action corresponding to a plurality of displacement switch 66.
Along with the rising of hydraulic pressure, piston 62 is to the compression direction displacement of spring 62a, even reduce in the gap of 62 in safety valve 63 and piston, safety valve 63 can be kept sealing state to a certain extent.When the hydraulic pressure gap of rising more disappears, when safety valve 63 contact with piston 62, piston 62 upwards pushed away safety valve 63, the sealing 67a opening of adjusting bolt 67.At this moment, because high pressure liquid flows out to low-pressure passage 61b from high-pressure passage 61a, the rising of hydraulic pressure is suppressed.When hydraulic pressure was lower than set point, piston 62 carried out opposite action, occurred the gap once more between safety valve 63 and the piston 62, and safety valve 63 contacts with sealing 67a, kept sealing, by avoiding the abnormal pressureization of hydraulic pressure like this.And sealing 67a is moved by regulating bolt 67, regulate the gap between safety valve 63 and the piston 62.Therefore can easily set 63 opening hydraulic pressure of safety valve.
The cut-off valve 64 that is located at hydraulic pressure watch-dog 60 makes high pressure liquid emit to low-pressure passage by stopping apply device 10, and pressure is reduced.This cut-off valve 64 is closed when flat, and opens putting when pressing cut-off valve 64, and high-pressure passage 61a and low-pressure passage 61b are communicated with.By such cut-off valve 64 is located at hydraulic pressure watch-dog 60, when using hydraulic pressure watch-dog 60 to carry out the setting of the displacement switch 66 of hydraulic pressure watch-dog 60 and safety valve 63 separately, can easily reduce pressure with cut-off valve 64.Therefore, freely setting pressure is carried out the setting of pressure monitor simply and is regulated.
1-7 low-pressure cabinet 70
With Fig. 1～3 and Fig. 6 low-pressure cabinet 70 is described.Here, Fig. 6 represents the expansion profile of the low-pressure cabinet of view Fig. 1～3 from Fig. 1.As shown in Figure 3, low-pressure cabinet 70 is communicated with hydraulic control portion 30 by pipeline 76, is communicated with pump 50 by filter 75 and inlet port 55, and this filter filters the foreign matter in the oil that enters pump 50.Be provided with blow vent 72 on low-pressure cabinet 70, the air 70d that it accumulates inside is communicated with extraneous air.Be provided with the bar-shaped liquid level meter 71 that is used for liquid-level measurement in the side of low-pressure cabinet 70.Low-pressure cabinet 70 shown in Figure 6 dividually is made of 70a of case portion and base plate 70b.
Even the shape of hydraulic control portion 30 grades makes that low-pressure cabinet 70 is not the simple shape of the simplest cylinder and cuboid, but complicated shape, because low-pressure cabinet 70 can be separated into 70a of case portion and base plate 70b, even when optional features such as wave absorption plate are set in filter 75 or low-pressure cabinet, also can easily process and form.So-called wave absorption plate is when the open circuit operation working solution flows in the low-pressure cabinet 70, under certain inflow situation, air mixed in this liquid and the low-pressure cabinet 70, the working solution that contains a large amount of air is supplied with in pump, because air influence makes and becomes impossible boosting of pump 50, and under another kind inflow situation, working solution fiercely sprays from blow vent 72, uses the wave absorption plate as the countermeasure that prevents in these cases.Keep atmospheric pressure thereby the air 70d that accumulates process blow vent 72 is communicated with atmosphere in low-pressure cabinet 70, therefore can not take place because level change causes the pressure in the low-pressure cabinet 70 to rise and decline.And constitute the order difference part 70c of Fixed-Filter 75 easily.Base plate 70b is by being provided with order difference part, can collect residual working solution when decomposing low-pressure cabinet 70 and do not overflow.
2. the action of apply device
Below to the action of Fig. 1～apply device 10A shown in Figure 6, particularly the action with drive division 20 and hydraulic control portion 30 is that main body is illustrated.
The 2-1 closed circuit state
Fig. 1 and Fig. 4 represent switch portion 1 "on" position, be the closed circuit state of apply device 10A.Accumulator 40 utilizes the compressibility of the nitrogen in the nitrogen chamber to pass through the accumulator piston action in liquid-accumulating chamber, presses to the liquid storage of being supplied with by pump 50.This accumulator 40 makes high pressure liquid act on the 1st liquid chamber 24 of drive division 20 by the feed flow hole 33 and the pipeline 21c of hydraulic control portion 30 often.
On the other hand, as shown in Figure 4, in hydraulic control portion 30, be communicated with control hole 32 and feed flow hole 33 by transfer valve 39.Therefore, on the face of the 2nd liquid chamber 25 sides of driven plunger 22, the high pressure liquid effect is arranged also.Like this, under closed circuit state, not only on the face of the 1st liquid chamber 24 sides of driven plunger 22, and on the face of the 2nd liquid chamber 25 sides, the high pressure liquid effect is arranged also.Therefore driven plunger 22 is by the hydraulic action area difference of the face of these both sides, keeps the position of closed circuit state shown in Figure 1.
The 2-2 action of opening a way
Under above closed circuit state, the open circuit of hydraulic control portion 30 of passing to Fig. 4 when the signal of the instruction of will opening a way is when the solenoid 45, and the axle 45a in the solenoid promotes transfer valve 39, and transfer valve 39 carries out the path change action, and control hole 32 and outage 34 are communicated with.Its result, because the hydraulic pressure in the 2nd liquid chamber 25 of drive division 20 descend, driven plunger 22 is urged to the left side of Fig. 1 by the high pressure liquid of the 1st liquid chamber 24, the movable electrode 3 that connects by drive rod 23 action of opening a way.In this open circuit action, along with moving of driven plunger 22, low-pressure cabinet 70 reclaims from hydraulic control portion 30 discharge liquor in the 2nd liquid chamber 25 through piping 76.
The 2-3 open-circuit condition
Under the open-circuit condition after the above open circuit release, only on the face of the 1st liquid chamber 24 sides of driven plunger 22, the pressure fluid effect is arranged.Thus, driven plunger 22 keeps the position of open-circuit condition by the pressure differential of both sides.
The closed circuit action of 2-4
Under above open-circuit condition, closed circuit when the solenoid 46 when the hydraulic control portion 30 that the signal of closed circuit instruction is passed to Fig. 4, the axle 46a in the solenoid promotes transfer valve 39, and transfer valve 39 carries out the path change action, and control hole 32 and feed flow hole 33 are communicated with.High pressure liquid enters the 2nd liquid chamber 25 of drive division 20 thus, and driven plunger 22 is urged to the right side of Fig. 1 by the high pressure liquid of the 2nd liquid chamber 25, and the movable electrode 3 that connects by drive rod 23 carries out closed circuit action, gets back to the state of Fig. 1.
3. other embodiment
In above record, there is the embodiment of representative to be illustrated to of apply device integral body, below specify another embodiment with reference to Fig. 7, Fig. 8.
The 2nd embodiment of 3-1 accumulator fixed part
Fig. 7 is the figure of the 2nd embodiment of expression accumulator fixed part.In this accumulator 40, the parts of accumulator fixed part and cylinder head 21 are provided with accumulator integratedly.In this structure, the high pressure liquid of being pressed by storage in accumulator 40 directly acts on the 1st liquid chamber 24, acts on the feed flow hole 33 of hydraulic control portion 30 by pipeline 21c.Be communicated with pump 50 by pipeline 21c.
According to above structure,, can realize the small integrated of apply device 10 even the capacity high capacity of accumulator 40, overtime axially also can directly be contained on the drive division 20.
The 2nd embodiment of 3-2 hydraulic control portion
Fig. 8 is the 2nd embodiment of hydraulic control portion.This hydraulic control portion 30 is different with hydraulic control shown in Figure 4 portion, expression be the hydraulic control portion (control valve portion, main operation valve portion) that is provided with 2 grades of formulas the time a structure example of main operation valve portion 31, corresponding during the driving energy increase of this main control valve portion 31 and for example apply device 10.Here do not illustrate control valve portion, it generally has the transfer valve of Fig. 4 and makes open circuit that this transfer valve carries out change action with solenoid, the closed circuit solenoid of using.The feed flow hole of this control valve portion 31, control hole, outage respectively with each main operation valve portion 31 respectively operate feed flow hole A33, operation control hole A32, operation outage A34 is communicated with.
Main operation valve portion 31 comprises: control hole 32, carry out the supply of the 2nd liquid chamber 25 of drive division 20 and the selection of discharge pressure fluid; Feed flow hole 33 is often by the high pressure liquid of the terminal 21a supply of cylinder from accumulator 40; Outage 34 is communicated with low-pressure cabinet 70 by the terminal 21a interior conduit 76 of cylinder.In addition as shown in Figure 8, be provided with at the supplying valve 35 of the opening and closing usefulness between control hole 32 and the feed flow hole 33 and the tapping valve 36 of the opening and closing usefulness between control hole 32 and outage 34, this supplying valve 35 and tapping valve 36 are arranged on the same action axle.
Promptly as shown in Figure 8, form top 35a in the end relative with tapping valve 36 of supplying valve 35, this top 35a can slide in the recess on the tapping valve 36.Adhesion when the top of this supplying valve 35 35a is provided with guide ring 35b and is used to prevent that supplying valve 35 and tapping valve 36 from sliding and reduce the resistance that slides.Symbol 35c among the figure is the sealing that is used for sealing 33 in control hole 32 and feed flow hole.Be that supplying valve 35 is divided into top 35a and sealing 35c.
At the back of the top of supplying valve 35 35a and tapping valve 36, be provided with the 36a of spring housing at the operation control hole A32 that is communicated with from control valve portion, the spring 36b that is used for regularly closing tapping valve 36a is housed in the inside of the 36a of this spring housing.By the 36a of this spring housing is supplied with or discharge pressure liquid, supplying valve 35 or tapping valve 36 are driven independently of one another and open and close.
The 35d of spring housing also is equipped with at back at supplying valve 35, and the 35e of spring housing that regularly closes supplying valve 35 is housed in the inside of the 35d of this spring housing.For the pressure fluid that makes the 35d of this spring housing does not influence the action of supplying valve 35, form the pipeline 35f that is communicated with 35d of spring housing and control hole 32 by sealing 35c at supplying valve 35.
Also form 2 choke valves in feed flow hole 33, be used to change the area of passage in feed flow hole 33 and the closed circuit responsiveness of regulating circuit breaker.One is Flow-rate adjustment fixed restrictive valve 37b, and another is arranged on the Flow-rate adjustment variable throttle valve 37 near the back of Flow-rate adjustment fixed restrictive valve 37b.Digital 37a among the figure is arranged on the outwards outstanding bolt of Flow-rate adjustment variable throttle valve 37, by externally operating this bolt 37a, can regulate Flow-rate adjustment variable throttle valve 37.
Action with main operation valve portion 31 of this structure, in its open circuit action, by the solenoidal command signal of the open circuit of control valve portion, the transfer valve of control valve portion carries out change action.Therefore the high pressure liquid owing to the 36a of spring housing when closed circuit state is discharged from through control valve portion, operation outage A34, outage 34 from operation control hole A32, and the pressure of the 36a of spring housing descends.Therefore tapping valve 36 is by moving with the pressure differential of control hole 32, because control hole 32 and outage 34 are communicated with, the pressure that drives the 2nd liquid chamber 24 of cylinder 20 descends, driven plunger 22 actions, movable electrode 3 action of opening a way.This moment, the top 35a of supplying valve 35 moved too in the action of tapping valve 36, to the direction pushing of opening tapping valve 36, can open tapping valve 36 greatly, and the response when making the open circuit action is good.In order to make tapping valve 36 before and after release, reach pressure balance, move by spring force, close between outage 34 and the control hole 32.
On the other hand, in closed circuit action, use solenoidal command signal by control valve portion closed circuit, the transfer valve of control valve portion carries out change action.Thus, pressure fluid 32 through operation feed flow hole A33, control valve portion, the 36a of spring housing of low pressure when operation control hole A32 supplies with open-circuit condition, rises the pressure of the 36a of spring housing from the feed flow hole.This pressure fluid is urged the top 35a of supplying valve 35, thus supplying valve 35 actions, because control hole 32 and feed flow hole 33 are communicated with, the pressure that drives the 2nd liquid chamber 24 of cylinder 20 rises, driven plunger 22 actions, and movable electrode 3 carries out closed circuit action.At this moment, supplying valve 35 and top 35a, sealing 35c move as one.In addition, because tapping valve 35 pressure before and after release keeps balance, move by the effect of spring force, between sealing feed flow hole 33 and the control hole 32.
In having the main operation valve portion 31 of above structure, the radius of the valve by change Flow-rate adjustment fixed restrictive valve 37b, the hydraulic control portion that a kind of main operation valve portion can be used as the apply device of various capacity uses.Can also carry out the adjusting of Flow-rate adjustment variable throttle valve 37 from peripheral operation bolt 37a, thereby carry out the meticulous adjusting of closed circuit responsiveness.
The present invention is not subjected to the qualification of the various embodiments described above, can implement other various forms within the scope of the invention.Promptly can to drive division, hydraulic control portion, accumulator, pump, pressure monitor portion, and concrete structure such as low-pressure cabinet carry out suitable selection.
Claims (7)
1, a kind of apply device is used to carry out the switch motion of the switch portion of circuit breaker, is provided with: drive cylinder; Driven plunger can be inserted this with being free to slide and drive in the cylinder; Drive rod is used to connect the switch portion of this driven plunger and above-mentioned circuit breaker; The 1st liquid chamber and the 2nd liquid chamber, as spacer body, the above-mentioned drive rod side in above-mentioned driving cylinder and its opposition side form respectively with above-mentioned driven plunger; Hydraulic control portion carries out the supply of pressure fluid of above-mentioned the 2nd liquid chamber or the selection of discharge, the hydraulic pressure in the control liquid chamber; Accumulator makes highly pressurised liquid often act on above-mentioned the 1st liquid chamber; Pump is used for supplying with high pressure liquid to above-mentioned accumulator; Low-pressure cabinet is used to reclaim the discharge liquor of above-mentioned the 2nd liquid chamber and accumulates low hydraulic fluid, and above-mentioned apply device is characterised in that:
The pipeline of supplying with high pressure liquid to above-mentioned the 1st liquid chamber from above-mentioned accumulator covers the outside of above-mentioned driving cylinder, and drives cylinder on same axle with this, and forms dual cylinder.
2, according to claims 1 described apply device, it is characterized in that: the part that will fix the cylinder part of the storage pressure part of above-mentioned accumulator and fixing above-mentioned driving cylinder is provided with integratedly.
3, according to claims 1 described apply device, it is characterized in that:
Be formed with in the above-mentioned hydraulic control portion: obtain the feed flow hole of high pressure liquid, the control hole that is communicated with above-mentioned the 2nd liquid chamber and the outage that is communicated with above-mentioned low-pressure cabinet from above-mentioned accumulator often, and being provided with the solenoid that any and above-mentioned control hole in feed flow hole and the outage are selected the transfer valve that is communicated with and made this transfer valve action, above-mentioned feed flow hole also is provided with the flow regulator of the flow that is used to regulate high pressure liquid.
4, apply device according to claim 3 is characterized in that: the certain flow path that forms the high pressure liquid that flows through certain flow often in above-mentioned feed flow hole.
5, according to claims 1 described apply device, it is characterized in that:
Above-mentioned hydraulic control portion is made of main operation valve portion and the control valve portion that controls this main operation valve portion;
Dispose the supplying valve of supplying with the 2nd liquid chamber pressure fluid and from the tapping valve of above-mentioned the 2nd liquid chamber discharge pressure fluid in above-mentioned main operation valve portion, the two is configured in the same action spool basically;
Above-mentioned supplying valve is provided with sliding part that slides with above-mentioned tapping valve and the sealing that carries out switch as valve.
6, according to claims 1 described apply device, it is characterized in that:
Be provided with pressure monitor portion, be used to monitor the hydraulic pressure of the high pressure liquid in the above-mentioned accumulator;
This pressure monitor portion is provided with: high-pressure passage is taken into high pressure liquid from above-mentioned accumulator; Low-pressure passage can be communicated with high-pressure passage; Safety valve is used for being communicated with high-pressure passage and low-pressure passage high pressure liquid being emitted to low-pressure passage from high-pressure passage when the hydraulic pressure of the high pressure liquid that flows through above-mentioned high-pressure passage surpasses predetermined set value; Cut-off valve is used to be communicated with high-pressure passage and low-pressure passage, and above-mentioned set point is descended.
7, according to claims 1 described apply device, it is characterized in that:
Above-mentioned low-pressure cabinet is constituted as separable structure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10160155A JPH11353983A (en) | 1998-06-09 | 1998-06-09 | Hydraulic operation device |
| JP160155/1998 | 1998-06-09 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100836917A Division CN100405514C (en) | 1998-06-09 | 1999-06-09 | Hydraulic operation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1238542A CN1238542A (en) | 1999-12-15 |
| CN1218342C true CN1218342C (en) | 2005-09-07 |
Family
ID=15709070
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN991080777A Expired - Lifetime CN1218342C (en) | 1998-06-09 | 1999-06-09 | Hydraulic operation device |
| CNB2005100836917A Expired - Lifetime CN100405514C (en) | 1998-06-09 | 1999-06-09 | Hydraulic operation device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100836917A Expired - Lifetime CN100405514C (en) | 1998-06-09 | 1999-06-09 | Hydraulic operation device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH11353983A (en) |
| KR (1) | KR100336828B1 (en) |
| CN (2) | CN1218342C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4322399B2 (en) * | 2000-05-31 | 2009-08-26 | 株式会社東芝 | Hydraulic operation device |
| JP4724234B2 (en) * | 2009-04-13 | 2011-07-13 | 株式会社東芝 | Hydraulic operation device |
| CN104295554B (en) * | 2014-02-24 | 2017-04-05 | 国家电网公司 | Switching mechanism, hydraulic actuating mechanism and its working cylinder |
| CN104733255B (en) * | 2015-03-10 | 2017-01-04 | 深圳供电局有限公司 | A kind of running-in machine of hydraulic actuating mechanism on high-voltage sf6 circuit breaker |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5643546U (en) * | 1979-09-12 | 1981-04-20 | ||
| JP3178311B2 (en) * | 1995-10-09 | 2001-06-18 | 株式会社日立製作所 | Hydraulic actuator of power circuit breaker |
| JP3388972B2 (en) * | 1995-12-26 | 2003-03-24 | 株式会社東芝 | Operating mechanism of power circuit breaker |
| JPH09265875A (en) * | 1996-03-28 | 1997-10-07 | Toshiba Corp | Hydraulic operating device of power breaker |
| JPH1050181A (en) * | 1996-08-01 | 1998-02-20 | Toshiba Corp | Hydraulic pressure operation device |
-
1998
- 1998-06-09 JP JP10160155A patent/JPH11353983A/en active Pending
-
1999
- 1999-06-02 KR KR1019990020283A patent/KR100336828B1/en not_active IP Right Cessation
- 1999-06-09 CN CN991080777A patent/CN1218342C/en not_active Expired - Lifetime
- 1999-06-09 CN CNB2005100836917A patent/CN100405514C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| KR100336828B1 (en) | 2002-05-16 |
| JPH11353983A (en) | 1999-12-24 |
| CN1238542A (en) | 1999-12-15 |
| CN100405514C (en) | 2008-07-23 |
| CN1734694A (en) | 2006-02-15 |
| KR20000005854A (en) | 2000-01-25 |
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