CN207634411U - A kind of piping lane Electrohydraulic push rod and its hydraulic circuit system - Google Patents
A kind of piping lane Electrohydraulic push rod and its hydraulic circuit system Download PDFInfo
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- CN207634411U CN207634411U CN201721393403.2U CN201721393403U CN207634411U CN 207634411 U CN207634411 U CN 207634411U CN 201721393403 U CN201721393403 U CN 201721393403U CN 207634411 U CN207634411 U CN 207634411U
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- retraction
- push rod
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Abstract
The utility model provides a kind of piping lane Electrohydraulic push rod and its hydraulic circuit system, including oil groove and hydraulic pressure cylinder assembly, load check valve is equipped between the rod chamber and rodless cavity of hydraulic cylinder, by jacking oil circuit connection between the rodless cavity and oil groove, the jacking oil circuit includes the jacking check valve being sequentially connected in series and the normally closed double cut-off electromagnetic valves of jacking, the rodless cavity is also connected with accumulator, and lift-up pressure is equipped between rodless cavity and accumulator and is switched；Retraction check valve is in series with by the oil circuit connection that bounces back, the retraction oil circuit between the rod chamber and oil groove, has recoil pressure switch and the normally closed double cut-off electromagnetic valves that bounce back is in parallel with retraction check valve；Two oil circuits are connected with same bidirectional hydraulic pump, and have bidirectional hydraulic lock unit between two oil circuits.To adapt to narrow space environment in piping lane, remains to open well lid by external power supply or manual operation when circuit or control unit break down, make the control Electrohydraulic push rod that operator is more convenient.
Description
Technical field
The utility model belongs to municipal piping lane infrastructure field, more particularly, to a kind of piping lane Electrohydraulic push rod and its liquid
Press circuit system.
Background technology
With the development of the city, city size is increasing, and underground engineering is also increasing therewith, underground engineering it is very much
Entrance uses well lid as isolation using well lid as when importing and exporting；Existing well lid is opened or is closed generally by next manually
Complete, as the manager of city piping lane system or Buried Pipeline Network Systems, can not remote detection well lid open and-shut mode, well
The frequent loss of lid and damage cause crucial moment, and well lid loses original effect, leads to the generation of accident；Sometimes city planting ductwork
Administrative staff wish opening or the closing of remote control well lid, complete remote operation；
Smart city can be used as wisdom city as future urban development direction, urban pipe network piping lane well lid remote control monitoring
One chief component in city, piping lane well lid remote control need corresponding power plant and control system；Under well lid, piping lane
Narrow space just needs a kind of small, reliable for operation power plant to complete the driving of the opening and closing of well lid；Hydraulic pressure
Driving is relatively suitble to the opening and closing of well lid, but conventional hydraulic is mainly made of hydraulic station, hydraulic cylinder, is taken up a large area,
And it is unfavorable for the opening of well lid when breaking down.
Utility model content
In view of this, the utility model is directed to a kind of piping lane Electrohydraulic push rod and its hydraulic circuit system, to overcome
The deficiency of existing Electrohydraulic push rod, and remain in the case where well lid is closed to provide piping lane well lid downward pulling force, realize one
Change design, reduces outer oil circuit connection, to adapt to narrow space environment in piping lane, still when circuit or control unit break down
Well lid can be opened by external power supply or manual operation, make the control Electrohydraulic push rod that operator is more convenient.
In order to achieve the above objectives, the technical solution of the utility model is realized in：
A kind of hydraulic circuit system of Electrohydraulic push rod, including oil groove and hydraulic pressure cylinder assembly, the hydraulic pressure cylinder assembly include nothing
Rod cavity and rod chamber, and the unidirectional connection from rod chamber to rodless cavity is realized by load check valve；The rodless cavity and oil groove
Between by jacking oil circuit connection, the jacking oil circuit includes the jacking check valve that is sequentially connected in series and jacks normally closed double cut-off electromagnetism
Valve, the rodless cavity are also connected with accumulator, and lift-up pressure is equipped between rodless cavity and accumulator and is switched；The rod chamber and oil
Retraction check valve is in series with by the oil circuit connection that bounces back, the retraction oil circuit between slot, has recoil pressure to switch and bounce back normally closed
Double cut-off electromagnetic valves are in parallel with retraction check valve；Two oil circuits are connected with same bidirectional hydraulic pump, and between two oil circuits
Have bidirectional hydraulic lock unit；(the normally closed double cut-off electromagnetic valves of jacking and retraction are normally closed for described two normally closed double cut-off electromagnetic valves
Double cut-off electromagnetic valves) can by opening manually, to realize that Electrohydraulic push rod does jacking and retracting action under the control of motor,
And when people makes Electrohydraulic push rod forced working in well and when device breaks down by opening normally closed double cut-off electromagnetic valves manually.
Further, described two check valves (jacking check valve and retraction check valve) are equipped with filtering between oil groove
Device is filtered fluid, prevents oil circuit from blocking.
Further, the bidirectional hydraulic pump is prevented with oil groove by jacking overflow valve and retraction overflow valve forming circuit
Pressure is excessive in oil circuit.
Based on the hydraulic circuit system of an above-mentioned Electrohydraulic push rod, a kind of piping lane Electrohydraulic push rod is designed,
Including oil groove, hydraulic pressure cylinder assembly and the hydraulic power pack in oil groove, the hydraulic power pack includes
Motor, bidirectional hydraulic pump and accumulator, in bidirectional hydraulic pump, the oil groove, which is equipped with, to refuel for the output shaft setting of the motor
Mouth, lift-up pressure switch and recoil pressure switch, the accumulator, which passes through, jacks accumulation of energy pipe and retraction accumulation of energy pipe and bidirectional hydraulic
Pump connection；Hydraulic pressure cylinder assembly includes the hydraulic stem in hydraulic cylinder and hydraulic cylinder, and the hydraulic cylinder, which is divided into, not to be connected mutually
Logical rod chamber and rodless cavity, the bidirectional hydraulic pump are connected by the rod chamber and rodless cavity of two oil circuits and hydraulic cylinder
It is logical；Be additionally provided on the bidirectional hydraulic pump jacking overflow valve, retraction overflow valve, jacking hydraulic control one-way valve, retraction hydraulic control one-way valve,
Jack normally closed double cut-off electromagnetic valves and the normally closed double cut-off electromagnetic valves of retraction.
Further, described two double cut-off electromagnetic valves can be connect with extraneous power supply, for people outside well and device send out
Make Electrohydraulic push rod forced working by connecting the extraneous normally closed double cut-off electromagnetic valves of power supply opening when raw failure.
Further, the hydraulic pressure cylinder assembly further includes rope sensor, and liquid is fixed in one end of the rope sensor
Cylinder pressure cylinder, the other end are connect with hydraulic stem, the overhang for measuring hydraulic stem.
Further, bidirectional hydraulic pump is equipped with jacking oil outlet and retraction oil outlet, the rodless cavity of the hydraulic cylinder
Equipped with jacking oil inlet and retraction oil inlet, jacking oil outlet is connected to form jacking oil circuit with jacking oil inlet, the rodless cavity
It is connected to by a peripheral hardware connecting tube between rod chamber, jacking oil inlet is connected to form retraction oil circuit with retraction oil outlet；It is described
The retraction oil outlet and jacking oil outlet of bidirectional hydraulic pump are equipped with oil pressure sensor, and oil pressure sensor is connect with motor.
For the oil pressure in measuring jacking oil circuit and the oil circuit that bounces back, motor operating is controlled when oil pressure is too low, increases the pressure in rod chamber
Power makes hydraulic cylinder keep certain pulling force under tightening state.
Further, it is equipped with load check valve between the bidirectional hydraulic pump and the bottom of hydraulic cylinder, and load is unidirectional
Valve can make jacking oil circuit and retraction oil communication.
Further, the accumulator is set to above oil groove, and equipped with jacking hydraulic fluid port and retraction hydraulic fluid port, the jacking hydraulic fluid port
It is connected to jacking accumulation of energy pipe, retraction hydraulic fluid port is connected to retraction accumulation of energy pipe.
A kind of piping lane manhole lid device, including a kind of piping lane Electrohydraulic push rod, which is characterized in that piping lane well lid is mounted on
The free end of the hydraulic stem of Electrohydraulic push rod.
Hydraulic power pack described in the utility model is integrated with hydraulic pressure cylinder assembly, saves intermediate oil circuit, and use is pure
Automatically controlled mode simplifies push rod device, while there are two types of drain charge sides for the utility model tool by regular power line and control line
Formula, i.e., manual and external power supply mode；
The overhang of detection hydraulic stem is realized using rope sensor；
Hydraulic cylinder rod chamber portion and rodless cavity portion oil pressure are detected using pressure sensor, feed back to control device from
And automatic control motor is to maintain constant push rod force；
It is realized using accumulator and normally closed double cut-off electromagnetic valves in the case where circuit and control device break down, makes work
No matter making personnel in piping lane or outside piping lane, well lid unlatching can be manually controlled.
Compared with the existing technology, a kind of piping lane Electrohydraulic push rod and its hydraulic circuit system described in the utility model have
Following advantage：
Description of the drawings
The attached drawing for constituting the part of the utility model is used to provide a further understanding of the present invention, this practicality is new
The illustrative embodiments and their description of type are not constituted improper limits to the present invention for explaining the utility model.
In attached drawing：
Fig. 1 is Electrohydraulic push rod oil circuit connection figure；
Fig. 2 is the whole first visual angle schematic diagram of Electrohydraulic push rod；
Fig. 3 is the whole second visual angle schematic diagram of Electrohydraulic push rod；
Fig. 4 is Electrohydraulic push rod internal structure schematic diagram；
Fig. 5 is accumulator schematic diagram；
Fig. 6 is hydraulic pressure cylinder assembly and bidirection press pump oil mouth relational graph.
Reference sign：
1- oil grooves；2- hydraulic pressure cylinder assemblies；3- hydraulic power packs；4- rope sensors；11- lift-up pressures switch；12- is returned
Compression pressure switchs；13- oil fillers；21- hydraulic cylinders；22- hydraulic stems；211- rod chambers；212- rodless cavities；2121- jack into
Hydraulic fluid port；2122- retraction oil inlets；31- motors；32- bidirectional hydraulics pump；33- accumulators；331- jacks hydraulic fluid port；332- retraction oil
Mouthful；321- jacks oil outlet；322- retraction oil outlets；34- jacks accumulation of energy pipe；35- retraction accumulation of energy pipes；36- load check valves；
323- jacks normally closed double cut-off electromagnetic valves；The normally closed double cut-off electromagnetic valves of 324- retractions；325- peripheral hardware connecting tubes；326- jacks overflow
Valve；327- retraction overflow valves；328- jacks hydraulic control one-way valve；329- retraction hydraulic control one-way valves；5- jacks check valve；6- retractions are single
To valve；7- bidirectional hydraulic lock units.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In the description of the present invention, it should be understood that term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more this feature.It is in the description of the present invention, unless another
It is described, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State the concrete meaning of term in the present invention.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of hydraulic circuit system of Electrohydraulic push rod described in the utility model, including oil groove 1 and hydraulic pressure cylinder assembly 2, institute
It includes rodless cavity 212 and rod chamber 211 to state hydraulic pressure cylinder assembly 2, and is realized from rod chamber 211 to no bar by load check valve 36
The unidirectional connection of chamber 212；By jacking oil circuit connection between the rodless cavity 212 and oil groove 1, the jacking oil circuit includes successively
Concatenated jacking check valve 5 and the normally closed double cut-off electromagnetic valves 323 of jacking, the rodless cavity 212 are also connected with accumulator 33, no bar
Lift-up pressure switch 11 is equipped between chamber 212 and accumulator 33；Connected by the oil circuit that bounces back between the rod chamber 211 and oil groove 1
Connect, the retraction oil circuit is in series with retraction check valve 6, have recoil pressure switch 12 and bounce back normally closed double cut-off electromagnetic valves 324 and
The check valve 6 that bounces back is in parallel；Two oil circuits are connect with same bidirectional hydraulic pump 32, and have two-way liquid between two oil circuits
Press lock unit；Described two normally closed double cut-off electromagnetic valve (the normally closed double cut-off electromagnetic valves 323 of jacking and the normally closed double cut-off electromagnetism that bounce back
Valve 324) to realize that Electrohydraulic push rod does jacking and retracting action under the control of motor, and people can be worked as by opening manually
In well and make Electrohydraulic push rod forced working by opening normally closed double cut-off electromagnetic valves manually when device breaks down.
Described two check valves (jacking check valve 5 and retraction check valve 6) are equipped with filter between oil groove 1, to oil
Liquid is filtered, and prevents oil circuit from blocking.
The bidirectional hydraulic pump 32 is formed into a loop with oil groove 1 by jacking overflow valve 326 and retraction overflow valve 327, is prevented
Pressure is excessive in oil circuit.
The bidirectional hydraulic lock unit include be connected on jacking oil circuit jacking hydraulic control one-way valve 328 and be connected on retraction oil
Retraction oil circuit check valve in road.
Piping lane Electrohydraulic push rod described in the utility model, including oil groove 1, hydraulic pressure cylinder assembly 2 and in oil groove 1
Hydraulic power pack 3, the hydraulic power pack 3 include motor 31, bidirectional hydraulic pump 32 and accumulator 33, the motor 31
Output shaft setting bidirectional hydraulic pump 32 in, the oil groove 1 is opened equipped with oil filler 13, lift-up pressure switch 11 and recoil pressure
12 are closed, the accumulator 33 is connected to by jacking accumulation of energy pipe 34 and retraction accumulation of energy pipe 35 with bidirectional hydraulic pump 32；Hydraulic pressure cylinder assembly 2
Including the hydraulic stem 22 in hydraulic cylinder 21 and hydraulic cylinder 21, the hydraulic cylinder 21 is divided into mutual disconnected rod chamber
211 and rodless cavity 212, the bidirectional hydraulic pump 32 is by the rod chamber 211 of two oil circuits and hydraulic cylinder 21 and without bar
Chamber 212 is connected to；Jacking overflow valve 326, retraction overflow valve 327, jacking hydraulic control one-way valve are additionally provided on the bidirectional hydraulic pump 32
328, bounce back hydraulic control one-way valve 329, the normally closed double cut-off electromagnetic valves of jacking and the normally closed double cut-off electromagnetic valves 324 that bounce back.
Described two double cut-off electromagnetic valves can be connect with extraneous power supply, for people outside well and device break down when it is logical
The extraneous normally closed double cut-off electromagnetic valves of power supply opening of connection are crossed to make Electrohydraulic push rod forced working.
The hydraulic pressure cylinder assembly 2 further includes rope sensor 4, and hydraulic cylinder is fixed in one end of the rope sensor 4
21, the other end is connect with hydraulic stem 22, the overhang for measuring hydraulic stem 22.
Bidirectional hydraulic pump 32 is equipped with jacking oil outlet 321 and retraction oil outlet 322, the rodless cavity of the hydraulic cylinder 21
212 are equipped with jacking oil inlet 2121 and retraction oil inlet 2122, and jacking oil outlet 321 is connected to formation top with jacking oil inlet 2121
Oil circuit is risen, is connected to by a peripheral hardware connecting tube 325 between the rodless cavity 212 and rod chamber 211, oil inlet 2121 is jacked and returns
The connection of contracting oil outlet 322 forms retraction oil circuit；At the retraction oil outlet 322 and jacking oil outlet 321 of the bidirectional hydraulic pump 32
It is equipped with oil pressure sensor, and oil pressure sensor is connect with motor 31.For measuring the oil pressure in jacking oil circuit and retraction oil circuit,
Motor 31 is controlled when oil pressure is too low to operate, and increases the pressure in rod chamber 211, hydraulic cylinder is made to keep certain under tightening state
Pulling force.
It is equipped with load check valve 36, and load check valve 36 between the bidirectional hydraulic pump 32 and the bottom of hydraulic cylinder 21
It can make jacking oil circuit and retraction oil communication.
The accumulator 33 is set to 1 top of oil groove, and equipped with jacking hydraulic fluid port 331 and retraction hydraulic fluid port 332, the jacking hydraulic fluid port
331 are connected to jacking accumulation of energy pipe 34, and retraction hydraulic fluid port 332 is connected to retraction accumulation of energy pipe 35.
A kind of piping lane manhole lid device, including a kind of piping lane Electrohydraulic push rod, which is characterized in that piping lane well lid is mounted on
The free end of the hydraulic stem 22 of Electrohydraulic push rod.
In normal condition, when hydraulic stem 22 stretches out, motor 31 drives bidirectional hydraulic pump 32, and hydraulic control one-way valve opens hydraulic oil
By jacking hydraulic control one-way valve 328, the normally closed double cut-off electromagnetic valves 323 of jacking, into accumulator 33；33 pressure rise of accumulator,
Lift-up pressure switch 11 will detect that jacking normally closed double cut-off electromagnetic valves 323 after pressure rise opens, and hydraulic oil enters rodless cavity
In 212, hydraulic stem 22 is pushed to jack, at the same time, recoil pressure switch 12 detects that pressure reaches certain in rod chamber 211
Value opens the normally closed double cut-off electromagnetic valves 324 that bounce back, the hydraulic oil in rod chamber 211 is made to flow back in oil groove 1；Hydraulic stem 22 bounces back
When, the reversion rotation of motor 31 drives the hydraulic oil in rodless cavity 212 to flow back to oil groove 1, hydraulic oil is flowed into rod chamber 211, has
On the contrary, details are not described herein when body process is stretched out with hydraulic stem 22；Packing state：Under retracted state, pressure passes hydraulic stem 22
Pressure in sensor detection sensing rod chamber 211, if being less than certain value, driving motor 31 increases the pressure in rod chamber 211
Power keeps pulling force of the hydraulic stem 22 to well lid.
Emergency opening in well, personnel manually open two double cut-off electromagnetic valves, and the hydraulic oil in accumulator 33 is connected to
Hydraulic stem 22 is released in rodless cavity 212.
The outer emergency opening of well, by connecting well external power (not shown), so that two double cut-off electromagnetic valves is obtained electric, store
Hydraulic oil in energy device 33, which is connected in rodless cavity 212, releases hydraulic stem 22.
Electrohydraulic push rod described in the utility model is particularly suitable for the open and close of piping lane well lid, has fully considered normal
Under operation conditions, well planted agent's emergency opening, well answers emergency opening outside；Meanwhile press detection sensor is able to detect that Electrohydraulic push rod liquid
The working condition of cylinder pressure, Real-time Feedback greatly improve the security reliability that Electrohydraulic push rod is closed in pushing tow well lid.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of hydraulic circuit system of Electrohydraulic push rod, it is characterised in that：Including oil groove (1) and hydraulic pressure cylinder assembly (2), the liquid
Cylinder pressure component (2) includes rodless cavity (212) and rod chamber (211), and is equipped with and carries between rod chamber (211) and rodless cavity (212)
Lotus check valve (36)；Between the rodless cavity (212) and oil groove (1) by jack oil circuit connection, the jacking oil circuit include according to
Secondary concatenated jacking check valve (5) and the normally closed double cut-off electromagnetic valves (323) of jacking, the rodless cavity (212) is gone back and accumulator
(33) it is connected, lift-up pressure is equipped between rodless cavity (212) and accumulator (33) and switchs (11)；The rod chamber (211) and oil
By the oil circuit connection that bounces back between slot (1), the retraction oil circuit is in series with retraction check valve (6), has recoil pressure to switch (12)
It is in parallel with retraction check valve (6) with the normally closed double cut-off electromagnetic valves (324) that bounce back；Two oil circuits are pumped with same bidirectional hydraulic
(32) it connects, and has bidirectional hydraulic lock unit (7) between two oil circuits；Described two normally closed double cut-off electromagnetic valves (323,
It 324) can be by opening manually.
2. a kind of hydraulic circuit system of Electrohydraulic push rod according to claim 1, it is characterised in that：Described two check valves
It is equipped with filter between (5,6) and oil groove (1).
3. a kind of hydraulic circuit system of Electrohydraulic push rod according to claim 1, it is characterised in that：The bidirectional hydraulic pump
(32) it is formed into a loop with oil groove (1) by jacking overflow valve (326) and retraction overflow valve (327).
4. a kind of piping lane Electrohydraulic push rod, it is characterised in that：Including oil groove (1), hydraulic pressure cylinder assembly (2) and it is set to oil groove (1)
Interior hydraulic power pack (3), the hydraulic power pack (3) include motor (31), bidirectional hydraulic pump (32) and accumulator
(33), in bidirectional hydraulic pump (32), the oil groove (1) is equipped with oil filler (13), top for the output shaft setting of the motor (31)
Pressure switch (11) and recoil pressure switch (12) are risen, the accumulator (33) is by jacking accumulation of energy pipe (34) and retraction accumulation of energy pipe
(35) it is connected to bidirectional hydraulic pump (32)；Hydraulic pressure cylinder assembly (2) includes the liquid in hydraulic cylinder (21) and hydraulic cylinder (21)
Compression bar (22), the hydraulic cylinder (21) are divided into mutual disconnected rod chamber (211) and rodless cavity (212), the two-way liquid
Press pump (32) is connected to by two oil circuits with the rod chamber (211) of hydraulic cylinder (21) and rodless cavity (212)；The bidirectional hydraulic
Jacking overflow valve (326), retraction overflow valve, jacking hydraulic control one-way valve (328), retraction hydraulic control one-way valve are additionally provided on pump (32)
(329), normally closed double cut-off electromagnetic valves and the normally closed double cut-off electromagnetic valves (324) of retraction are jacked.
5. a kind of piping lane Electrohydraulic push rod according to claim 4, it is characterised in that：Described two double cut-off electromagnetic valves
(323,324) can be connect with extraneous power supply.
6. a kind of piping lane Electrohydraulic push rod according to claim 4, it is characterised in that：The hydraulic pressure cylinder assembly (2) is also wrapped
Rope sensor (4) is included, hydraulic cylinder (21), the other end and hydraulic stem (22) are fixed in one end of the rope sensor (4)
Connection.
7. a kind of piping lane Electrohydraulic push rod according to claim 4, it is characterised in that：Bidirectional hydraulic pumps (32) and is equipped with top
Hydraulic fluid port (321) and retraction oil outlet (322) are risen from, the rodless cavity (212) of the hydraulic cylinder (21) is equipped with jacking oil inlet
(2121) and retraction oil inlet (2122), jacking oil outlet (321) are connected to formation jacking oil circuit, institute with jacking oil inlet (2121)
State and be connected to by a peripheral hardware connecting tube (325) between rodless cavity (212) and rod chamber (211), retraction oil inlet (2122) with return
Contracting oil outlet (322) connection forms retraction oil circuit；The retraction oil outlet (322) and jacking oil outlet of the bidirectional hydraulic pump (32)
(321) oil pressure sensor is equipped at, and oil pressure sensor is connect with motor (31).
8. a kind of piping lane Electrohydraulic push rod according to claim 4, it is characterised in that：The bidirectional hydraulic pump (32) and liquid
Load check valve (36) is equipped between the bottom of cylinder pressure cylinder (21), and load check valve (36) can make jacking oil circuit and retraction oil circuit
Connection.
9. a kind of piping lane Electrohydraulic push rod according to claim 4, it is characterised in that：The accumulator (33) is set to oil groove
(1) top, and it is equipped with jacking hydraulic fluid port (331) and retraction hydraulic fluid port (332), the jacking hydraulic fluid port (331) and jacking accumulation of energy pipe (34)
Connection, retraction hydraulic fluid port (332) are connected to retraction accumulation of energy pipe (35).
10. a kind of piping lane Electrohydraulic push rod of any one of a kind of piping lane manhole lid device, including claim 4-9, special
Sign is：Piping lane well lid is mounted on the free end of the hydraulic stem (22) of Electrohydraulic push rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721393403.2U CN207634411U (en) | 2017-10-25 | 2017-10-25 | A kind of piping lane Electrohydraulic push rod and its hydraulic circuit system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721393403.2U CN207634411U (en) | 2017-10-25 | 2017-10-25 | A kind of piping lane Electrohydraulic push rod and its hydraulic circuit system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207634411U true CN207634411U (en) | 2018-07-20 |
Family
ID=62859268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721393403.2U Active CN207634411U (en) | 2017-10-25 | 2017-10-25 | A kind of piping lane Electrohydraulic push rod and its hydraulic circuit system |
Country Status (1)
| Country | Link |
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| CN (1) | CN207634411U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825565A (en) * | 2018-08-16 | 2018-11-16 | 西南科技大学 | A kind of Integral hydraulic driving device with accumulator |
| CN108953280A (en) * | 2018-08-22 | 2018-12-07 | 扬州市慧宇科技有限公司 | A kind of New electro-hydraulic kilhig |
| CN109268325A (en) * | 2018-11-20 | 2019-01-25 | 燕山大学 | The electro-hydraulic driving unit of position control can be accurately protected towards Exceed load |
| CN109538549A (en) * | 2018-12-25 | 2019-03-29 | 浙江致腾电气成套设备有限公司 | A kind of intelligent well cover with miniature explosion-proof hydraulic power system |
| CN110107549A (en) * | 2019-06-04 | 2019-08-09 | 重庆川仪自动化股份有限公司 | A kind of electro-hydraulic execution system and method for thrust valve |
| CN114455498A (en) * | 2022-01-26 | 2022-05-10 | 浙江工业大学 | External oil source-free pump-controlled electro-hydraulic jack |
-
2017
- 2017-10-25 CN CN201721393403.2U patent/CN207634411U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825565A (en) * | 2018-08-16 | 2018-11-16 | 西南科技大学 | A kind of Integral hydraulic driving device with accumulator |
| CN108953280A (en) * | 2018-08-22 | 2018-12-07 | 扬州市慧宇科技有限公司 | A kind of New electro-hydraulic kilhig |
| CN108953280B (en) * | 2018-08-22 | 2020-11-06 | 扬州市慧宇科技有限公司 | Novel electro-hydraulic push rod |
| CN109268325A (en) * | 2018-11-20 | 2019-01-25 | 燕山大学 | The electro-hydraulic driving unit of position control can be accurately protected towards Exceed load |
| CN109268325B (en) * | 2018-11-20 | 2023-09-26 | 燕山大学 | Electro-hydraulic driving unit for exceeding load and capable of precisely ensuring position control |
| CN109538549A (en) * | 2018-12-25 | 2019-03-29 | 浙江致腾电气成套设备有限公司 | A kind of intelligent well cover with miniature explosion-proof hydraulic power system |
| CN110107549A (en) * | 2019-06-04 | 2019-08-09 | 重庆川仪自动化股份有限公司 | A kind of electro-hydraulic execution system and method for thrust valve |
| CN114455498A (en) * | 2022-01-26 | 2022-05-10 | 浙江工业大学 | External oil source-free pump-controlled electro-hydraulic jack |
| CN114455498B (en) * | 2022-01-26 | 2024-04-09 | 浙江工业大学 | Pump control electrohydraulic jack without external oil source |
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