CN106895035A - Forcible entry fire-fighting vehicle hydraulic system and forcible entry fire fighting truck - Google Patents
Forcible entry fire-fighting vehicle hydraulic system and forcible entry fire fighting truck Download PDFInfo
- Publication number
- CN106895035A CN106895035A CN201710290392.3A CN201710290392A CN106895035A CN 106895035 A CN106895035 A CN 106895035A CN 201710290392 A CN201710290392 A CN 201710290392A CN 106895035 A CN106895035 A CN 106895035A
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- valve
- forcible entry
- fire
- hydraulic system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C27/00—Fire-fighting land vehicles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses one kind forcible entry fire-fighting vehicle hydraulic system, the boom system end of forcible entry fire fighting truck is hinged with the quick disconnecting joint for installing forcible entry device, hydraulic system includes driving oil cylinder (1), pressure oil-source (3) and fuel tank (4), oil cylinder (1) is driven for driving quick disconnecting joint to be rotated around arm support tail end, pressure oil-source (3) drives the rodless cavity of oil cylinder, rod chamber to be interconnected to fuel tank (4) by communicating valve for driving oil cylinder (1) to stretch.The present invention is before forcible entry device is changed, the rodless cavity of oil cylinder, rod chamber will be driven to be interconnected to fuel tank by communicating valve, so, the deadweight of the forcible entry device using quick disconnecting joint and in quick disconnecting joint, driving oil cylinder can be made passively to stretch, so that quick disconnecting joint automatically rotates to replacing position, it is easy to dismount forcible entry device.Above-mentioned adjustment does not need active drive oil cylinder to stretch, and unrelated with arm support attitude, it is easy to accomplish quick disconnecting joint position adjust automatically, changes efficiency high.
Description
Technical field
The invention belongs to the technical field of fire-fighting equipment hydraulic system, and in particular to one kind forcible entry fire-fighting vehicle hydraulic system and
Forcible entry fire fighting truck.
Background technology
At present, fire units are undertaken work and task, oneself expands to many of social life from the single fire extinguishing of tradition
Aspect, faces the various paroxysmal situation of requiring assistance the also diversity and complexity increasingly of speedily carrying out rescue work.When the envelope such as bulk storage plant or basement
When closing place generation fire, fire extinguishing is not only needed, also need to dismantle building etc. rapidly sometimes.
A kind of fire fighting truck with forcible entry function of forcible entry fire fighting truck, it is hinged with quick disconnecting joint in boom system end, soon
Head is disconnected for different types of forcible entry devices such as Fast Installation hydraulic shear, hammer, saws, drives quick disconnecting joint to turn by hydraulic jack
Move to drive whole forcible entry device to act.In the course of the work, forcible entry fire fighting truck is frequently necessary to change different types of forcible entry dress
Put to adapt to different types of forcible entry operation, and because the deadweight of forcible entry device is larger, it is necessary to boom system will actively be disconnected soon
Head is moved to the position for being adapted to change and is changed.When forcible entry device is changed, first the end of boom system is lowerd, then lead to
Cross hydraulic jack drive quick disconnecting joint turn to replacing position (change position be typically quick disconnecting joint mounting surface and plane-parallel
Or in the state of a certain fixed angle), finally change forcible entry device.Above-mentioned substitute mode the disadvantage is that, needing manipulator to grasp
Make driving oil cylinder actively flexible as hydraulic system, and be difficult to be positioned at quick disconnecting joint due to the difference of arm support attitude, during operation
It is adapted to fit on the position of forcible entry device, adjustment time is long, causes replacing efficiency low.Further, since needing to drive oil cylinder actively
Flexible, energy consumption is also higher.
The content of the invention
In view of this, the present invention proposes that one kind makes quick disconnecting joint automatically rotate to replacing position using deadweight, changes efficiency
Forcible entry fire-fighting vehicle hydraulic system and forcible entry fire fighting truck high.
On the one hand, the present invention proposes a kind of forcible entry fire-fighting vehicle hydraulic system, dismantles the boom system end hinge of fire fighting truck
The quick disconnecting joint for installing forcible entry device is connected to, hydraulic system includes driving oil cylinder, pressure oil-source and fuel tank, the driving oil
Cylinder is used to drive quick disconnecting joint to be rotated around arm support tail end, and pressure oil-source is used to drive oil cylinder to stretch, also including communicating valve, the drive
The rodless cavity of dynamic oil cylinder, rod chamber are interconnected to fuel tank by communicating valve.
As a further improvement, the boom system of the forcible entry fire fighting truck is provided with jib drive oil cylinder, the arm support
Oil cylinder and communicating valve is driven to share at least one section oil return circuit for being connected to fuel tank, being provided with this section of oil return circuit can set up the back of the body
The check valve of pressure.
As a further improvement, the communicating valve be three position four-way directional control valve, the rodless cavity hydraulic fluid port of the driving oil cylinder,
Rod chamber hydraulic fluid port the first actuator port respectively with three position four-way directional control valve, the second actuator port are connected, three position four-way directional control valve
Pressure port, oil return opening be connected with pressure oil-source, fuel tank respectively, when the three position four-way directional control valve is located at middle position, described the
One actuator port, the second actuator port, oil return opening are interconnected.
As a further improvement, the rodless cavity hydraulic fluid port for driving oil cylinder, rod chamber hydraulic fluid port and three position four-way directional control valve
Between oil circuit on be provided with hydraulic lock and/or balanced valve.
As a further improvement, the hydraulic lock and/or balanced valve are external control type balanced valve, and outside control mouth passes through two three
Port valve switching is connected to pressure oil-source or fuel tank.
As a further improvement, the two position three-way valve is electric proportional valve or switch valve.
As a further improvement, the rodless cavity hydraulic fluid port and/or rod chamber hydraulic fluid port for driving oil cylinder is connected with overflow valve.
Forcible entry fire-fighting vehicle hydraulic system proposed by the present invention, dismantles fire-fighting vehicle hydraulic system, dismantles the arm support system of fire fighting truck
System end is hinged with the quick disconnecting joint for installing forcible entry device, and hydraulic system includes driving oil cylinder, pressure oil-source and fuel tank, institute
Stating driving oil cylinder is used to drive quick disconnecting joint to be rotated around arm support tail end, and pressure oil-source is used to drive oil cylinder to stretch, also including connection
Valve, the rodless cavity of the driving oil cylinder, rod chamber are interconnected to fuel tank by communicating valve.The present invention is changing forcible entry device
Before, the rodless cavity of oil cylinder, rod chamber will be driven to be interconnected to fuel tank, so, using quick disconnecting joint and installation by communicating valve
The deadweight of the forcible entry device in quick disconnecting joint, you can make the fluid in rodless cavity, the rod chamber of driving oil cylinder mutually circulate, drives
Dynamic oil cylinder passively stretches, so that quick disconnecting joint automatically rotates to replacing position, is easy to the installation and removal of forcible entry device.It is above-mentioned
It is sagging that adjustment makes quick disconnecting joint rotate automatically using deadweight, it is not necessary to which active drive oil cylinder stretches, and unrelated with arm support attitude, easily
In quick disconnecting joint position adjust automatically is realized, efficiency high is changed, energy consumption is also than relatively low.
On the other hand, the invention provides one kind forcible entry fire fighting truck, including chassis and the boom system being arranged on chassis,
The end of boom system is hinged with the quick disconnecting joint for installing forcible entry device, also including power forcible entry fire fighting truck liquid as described above
Pressure system.
Due to having above-mentioned forcible entry fire-fighting vehicle hydraulic system on forcible entry fire fighting truck, it should have and forcible entry fire fighting truck hydraulic pressure
System identical beneficial effect, is no longer described in detail.
Brief description of the drawings
The accompanying drawing for constituting a part of the invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate, for explaining the present invention, not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the structural representation for dismantling fire-fighting vehicle hydraulic system.
Specific embodiment
It should be noted that in the case where not conflicting, the embodiment in the present invention and the feature in embodiment can phases
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in figure 1, the forcible entry fire-fighting vehicle hydraulic system forcible entry fire-fighting vehicle hydraulic system that the embodiment of the present invention is proposed, forcible entry
The boom system end of fire fighting truck is hinged with the quick disconnecting joint for installing forcible entry device, and hydraulic system includes driving oil cylinder 1, pressure
Power oil sources 3 and fuel tank 4, the driving oil cylinder 1 are used to drive quick disconnecting joint to be rotated around arm support tail end, and pressure oil-source 3 is used to drive
Oil cylinder 1 stretches.The present embodiment also includes communicating valve, and the rodless cavity of the driving oil cylinder 1, rod chamber are interconnected by communicating valve
To fuel tank 4.During normal work, communicating valve will drive the rodless cavity of oil cylinder 1, rod chamber to disconnect, and drive oil cylinder 1 in pressure oil-source 3
In the presence of stretch.When needing to change forcible entry device, by communicating valve will drive the rodless cavity of oil cylinder, rod chamber be interconnected to
Fuel tank, so, drives oil cylinder to be in quick condition, forcible entry device using quick disconnecting joint and in quick disconnecting joint from
Weight, you can make driving oil cylinder passively stretch, so that quick disconnecting joint automatically rotates to replacing position, is easy to the installation of forcible entry device
And dismounting.It is sagging that above-mentioned adjustment makes quick disconnecting joint rotate automatically using deadweight, it is not necessary to which active drive oil cylinder stretches, and and arm support
Attitude is unrelated, it is easy to accomplish quick disconnecting joint position adjust automatically, changes efficiency high, and energy consumption is also than relatively low.
Used as further preferred embodiment, the boom system of the forcible entry fire fighting truck is provided with jib drive oil cylinder 5,
The jib drive oil cylinder 5 and communicating valve share at least one section oil return circuit 6 for being connected to fuel tank 4, are set on this section of oil return circuit 6
The check valve 7 that can set up back pressure is equipped with, the outlet of check valve 7 is connected with fuel tank 4, being provided with check valve 7 makes valve core reset extremely
The spring of closed position, the elastic force for adjusting the spring can set up appropriate back pressure.When oil-tank floating is driven, other oil cylinders such as arm
Frame drive oil cylinder can act simultaneously, by set return check valve set up back pressure to drive oil cylinder repairing, meet drive oil cylinder because
Flow difference demand caused by rodless cavity, rod chamber area difference, repairing is simply and reliable.
Used as further preferred embodiment, the communicating valve is three position four-way directional control valve 2, the driving oil cylinder 1
Rodless cavity hydraulic fluid port, rod chamber hydraulic fluid port the first actuator port A, the second actuator port B respectively with three position four-way directional control valve 2 are connected,
Pressure port P, the oil return inlet T of three position four-way directional control valve 2 are connected with pressure oil-source 3, fuel tank 4 respectively, when 3-position 4-way commutation
When valve 2 is located at middle position, the first actuator port A, the second actuator port B, oil return inlet T are interconnected.Changed using 3-position 4-way
To " Y types " function of valve 2, three position four-way directional control valve 2 can also make as communicating valve simultaneously in addition to control drives oil cylinder 1 and commutates
With.
As further preferred embodiment, the rodless cavity hydraulic fluid port of the driving oil cylinder 1, rod chamber hydraulic fluid port and three four
Hydraulic lock and/or balanced valve 8 are provided with oil circuit between logical reversal valve 2.Hydraulic lock and/or balanced valve can be directly mounted at oil
On cylinder hydraulic fluid port, the security risk produced by pipelines from bursting is prevented.
Used as further preferred embodiment, the hydraulic lock and/or balanced valve 8 are external control type balanced valve, outside control mouth
Switched by two position three-way valve 9 and be connected to pressure oil-source 3 or fuel tank 4.By controlling the action of two position three-way valve 9, can be on demand
Latch actuation oil cylinder 1 at an arbitrary position, it is not necessary to which extra mechanical stop limiter carries out mechanical position limitation.
Used as further preferred embodiment, the two position three-way valve 9 is electric proportional valve or switch valve.For more constant
Load could be arranged to switch valve, coordinate hydraulic lock and the use of damping hole to realize that cylinder movement is steady.For changing greatly
Load, could be arranged to proportioning valve, coordinate control strategy to be controlled balanced valve, oil cylinder is operated steadily.
Used as further preferred embodiment, the rodless cavity hydraulic fluid port and/or rod chamber hydraulic fluid port of the driving oil cylinder 1 are connected
There is overflow valve 10.Oil cylinder has, rodless cavity is provided with overflow valve, can prevent caused cylinder situations such as because of high-altitude junk, accident collision
Interior superpressure, eliminates safe hidden trouble, while ensureing the safety of hydraulic system.
Forcible entry fire fighting truck hydraulic work system principle provided in an embodiment of the present invention is as follows：Normal work is with suspension function
Inequality, selected by DT1, DT2 electromagnet of three position four-way directional control valve 2：Oil cylinder is driven to stretch out or during retract action
One of those obtains electric to need DT1 or DT2, and the premise for suspending is that the valve must return middle position, by " y " middle position repairing.Just
Often operation process is：DT1/DT2 obtains electric, and DT0 obtains electric → hydraulic lock/balanced valve unlatching → oil cylinder and stretches or contract.DT1/DT2 dead electricity,
The electromagnet DT0 dead electricity → hydraulic lock/balanced valve closing → oil cylinder stop motion of two position three-way valve 9.Suspension operation process is：
DT1/DT2 dead electricity, valve obtains electric → hydraulic lock/balanced valve bidirectional opening → chamber of oil cylinder two and is all connected with oil return positioned at middle position → DT0,
Oil cylinder can float → and the motion of another oil cylinder produces oil return, back pressure is set up by the check valve being arranged on oil return line, for mending
Repay the external flow for driving oil cylinder to be needed by difference in areas.
The embodiment of the present invention additionally provides a kind of forcible entry fire fighting truck, including chassis and the boom system being arranged on chassis,
It is hinged on revolving dial rotatably arranged with the butt for having revolving dial, boom system by revolving support on chassis, arm support
The end of system is hinged with the quick disconnecting joint for installing forcible entry device, also including power forcible entry fire fighting truck hydraulic pressure system as described above
System.
Due to having above-mentioned forcible entry fire-fighting vehicle hydraulic system on forcible entry fire fighting truck, it should have and forcible entry fire fighting truck hydraulic pressure
System identical operation principle and beneficial effect, are no longer described in detail.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (8)
1. a kind of to dismantle fire-fighting vehicle hydraulic system, the boom system end for dismantling fire fighting truck is hinged with for installing forcible entry device
Quick disconnecting joint, hydraulic system includes driving oil cylinder (1), pressure oil-source (3) and fuel tank (4), and driving oil cylinder (1) is for driving
Quick disconnecting joint is rotated around arm support tail end, and pressure oil-source (3) stretches for driving oil cylinder (1), it is characterised in that：Also include connection
Valve, the rodless cavity of the driving oil cylinder (1), rod chamber are interconnected to fuel tank (4) by communicating valve.
2. it is according to claim 1 to dismantle fire-fighting vehicle hydraulic system, it is characterised in that the arm support system of the forcible entry fire fighting truck
System is provided with jib drive oil cylinder (5), and the jib drive oil cylinder (5) and communicating valve share at least one section and be connected to fuel tank (4)
Oil return circuit (6), being provided with this section of oil return circuit (6) can set up the check valve (7) of back pressure.
3. it is according to claim 1 and 2 to dismantle fire-fighting vehicle hydraulic system, it is characterised in that the communicating valve is three four
Logical reversal valve (2), rodless cavity hydraulic fluid port, the rod chamber hydraulic fluid port for driving oil cylinder (1) is respectively with the of three position four-way directional control valve (2)
One actuator port (A), the second actuator port (B) connection, pressure port (P), the oil return opening (T) of three position four-way directional control valve (2) are respectively
It is connected with pressure oil-source (3), fuel tank (4), when the three position four-way directional control valve (2) is positioned at middle position, first actuator port
(A), the second actuator port (B), oil return opening (T) are interconnected.
4. it is according to claim 3 forcible entry fire-fighting vehicle hydraulic system, it is characterised in that the driving oil cylinder (1) without bar
Hydraulic lock and/or balanced valve (8) are provided with oil circuit between chamber hydraulic fluid port, rod chamber hydraulic fluid port and three position four-way directional control valve (2).
5. it is according to claim 4 to dismantle fire-fighting vehicle hydraulic system, it is characterised in that the hydraulic lock and/or balanced valve
(8) it is external control type, outside control mouth is switched by two position three-way valve (9) and is connected to pressure oil-source (3) or fuel tank (4).
6. it is according to claim 5 to dismantle fire-fighting vehicle hydraulic system, it is characterised in that the two position three-way valve (9) is electricity
Proportioning valve or switch valve.
7. it is according to any one of claim 1 to 6 to dismantle fire-fighting vehicle hydraulic system, it is characterised in that the driving oil
The rodless cavity hydraulic fluid port and/or rod chamber hydraulic fluid port of cylinder (1) are connected with overflow valve (10).
8. a kind of forcible entry fire fighting truck, including chassis and the boom system being arranged on chassis, the end of boom system is hinged with use
In the quick disconnecting joint for installing forcible entry device, it is characterised in that：Also include the forcible entry fire-fighting any one of claim 1 to 7
Vehicle hydraulic system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710290392.3A CN106895035B (en) | 2017-04-28 | 2017-04-28 | Dismantle fire-fighting vehicle hydraulic system and forcible entry fire fighting truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710290392.3A CN106895035B (en) | 2017-04-28 | 2017-04-28 | Dismantle fire-fighting vehicle hydraulic system and forcible entry fire fighting truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106895035A true CN106895035A (en) | 2017-06-27 |
| CN106895035B CN106895035B (en) | 2019-04-12 |
Family
ID=59196636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710290392.3A Active CN106895035B (en) | 2017-04-28 | 2017-04-28 | Dismantle fire-fighting vehicle hydraulic system and forcible entry fire fighting truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106895035B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270002A (en) * | 2017-07-10 | 2017-10-20 | 三汽车制造有限公司 | A kind of hydraulic connector, quick change connection device and forcible entry fire fighting truck |
| CN113230551A (en) * | 2021-05-17 | 2021-08-10 | 连斌 | Hand-held type breaking-in tool for fire-fighting emergency rescue |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007030831A (en) * | 2005-07-29 | 2007-02-08 | Hitachi Constr Mach Co Ltd | Fire-fighting system |
| CN101554978A (en) * | 2009-04-29 | 2009-10-14 | 辽宁抚挖锦重机械有限公司 | Arm support lifting mechanism |
| CN101695596A (en) * | 2009-11-04 | 2010-04-21 | 盛富春 | Overhead wrecking, reconnoitring and rescuing firefighting truck |
| CN203051272U (en) * | 2012-11-29 | 2013-07-10 | 长沙中联消防机械有限公司 | Hydraulic control system and overhead working truck |
| CN103599613A (en) * | 2013-10-18 | 2014-02-26 | 江苏振翔车辆装备股份有限公司 | Multifunctional fire-fighting emergency-dealing forcible entry vehicle |
| CN203500154U (en) * | 2013-10-16 | 2014-03-26 | 长沙中联消防机械有限公司 | Cantilever crane becomes width of cloth return circuit and fire engine |
| CN105080016A (en) * | 2015-09-22 | 2015-11-25 | 沈阳建筑大学 | Special transport car for high-rise building fire rescue system |
| CN105645324A (en) * | 2016-04-18 | 2016-06-08 | 湖南五新隧道智能装备股份有限公司 | Cantilever crane motion hydraulic system and tunnel lagging jack operating vehicle |
| CN105781733A (en) * | 2016-03-29 | 2016-07-20 | 时建华 | Energy-saving type fire protection device |
| CN207195333U (en) * | 2017-04-28 | 2018-04-06 | 三一汽车制造有限公司 | Dismantle fire-fighting vehicle hydraulic system and forcible entry fire fighting truck |
-
2017
- 2017-04-28 CN CN201710290392.3A patent/CN106895035B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007030831A (en) * | 2005-07-29 | 2007-02-08 | Hitachi Constr Mach Co Ltd | Fire-fighting system |
| CN101554978A (en) * | 2009-04-29 | 2009-10-14 | 辽宁抚挖锦重机械有限公司 | Arm support lifting mechanism |
| CN101695596A (en) * | 2009-11-04 | 2010-04-21 | 盛富春 | Overhead wrecking, reconnoitring and rescuing firefighting truck |
| CN203051272U (en) * | 2012-11-29 | 2013-07-10 | 长沙中联消防机械有限公司 | Hydraulic control system and overhead working truck |
| CN203500154U (en) * | 2013-10-16 | 2014-03-26 | 长沙中联消防机械有限公司 | Cantilever crane becomes width of cloth return circuit and fire engine |
| CN103599613A (en) * | 2013-10-18 | 2014-02-26 | 江苏振翔车辆装备股份有限公司 | Multifunctional fire-fighting emergency-dealing forcible entry vehicle |
| CN105080016A (en) * | 2015-09-22 | 2015-11-25 | 沈阳建筑大学 | Special transport car for high-rise building fire rescue system |
| CN105781733A (en) * | 2016-03-29 | 2016-07-20 | 时建华 | Energy-saving type fire protection device |
| CN105645324A (en) * | 2016-04-18 | 2016-06-08 | 湖南五新隧道智能装备股份有限公司 | Cantilever crane motion hydraulic system and tunnel lagging jack operating vehicle |
| CN207195333U (en) * | 2017-04-28 | 2018-04-06 | 三一汽车制造有限公司 | Dismantle fire-fighting vehicle hydraulic system and forcible entry fire fighting truck |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107270002A (en) * | 2017-07-10 | 2017-10-20 | 三汽车制造有限公司 | A kind of hydraulic connector, quick change connection device and forcible entry fire fighting truck |
| CN113230551A (en) * | 2021-05-17 | 2021-08-10 | 连斌 | Hand-held type breaking-in tool for fire-fighting emergency rescue |
| CN113230551B (en) * | 2021-05-17 | 2022-04-15 | 内蒙古皇甲消防应急管理有限公司 | Hand-held type breaking-in tool for fire-fighting emergency rescue |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106895035B (en) | 2019-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102619794B (en) | Single-cylinder bolt expansion and contraction control system and construction machine | |
| CN108706463B (en) | Hydraulic control system of crane | |
| CN104591012A (en) | Hydraulic control system for single cylinder pin type telescopic boom and engineering machinery | |
| EP3438467B1 (en) | Hydraulic system and emergency operation method | |
| CN106895035A (en) | Forcible entry fire-fighting vehicle hydraulic system and forcible entry fire fighting truck | |
| CN102874704A (en) | Hydraulic system, hoisting mechanism and engineering machinery | |
| CN105645324A (en) | Cantilever crane motion hydraulic system and tunnel lagging jack operating vehicle | |
| CN109231051A (en) | Winch shear is self-locking and remote emergency hydraulic system and its operating method for an a kind of high position | |
| CN102705275A (en) | Hydraulic control system for bolt and engineering machinery | |
| CN103613021A (en) | Winch hydraulic control system and engineering machinery | |
| CN104632736A (en) | Two-degree-of-freedom rocking platform and hydraulic system thereof | |
| CN103641023B (en) | The hydraulic control system of control cock and hoist brake, hoisting crane | |
| CN207195333U (en) | Dismantle fire-fighting vehicle hydraulic system and forcible entry fire fighting truck | |
| CN102285599B (en) | Crane and double-counterweight-cylinder hydraulic control system thereof | |
| CN202181178U (en) | Hydraulic control system for automatic disassembly and assembly of suspension arm and crane employing system | |
| CN103015725A (en) | Boom hydraulic system, control method thereof, boom system and concrete pumping equipment | |
| CN109250626B (en) | Small crank arm insulating aerial working vehicle arm support and control system thereof | |
| CN202073955U (en) | Clutch system | |
| CN201496345U (en) | Pipeline bursting online security continuous work system of hydraulic equipment | |
| CN202937011U (en) | Boom hydraulic system, boom system and concrete pumping equipment | |
| CN202280674U (en) | Crane control chamber swing hydraulic system and crane | |
| CN202937013U (en) | Boom hydraulic system, boom system and concrete pumping equipment | |
| CN202988617U (en) | Rotary hydraulic system of engineering machinery and engineering machinery | |
| CN202381432U (en) | Leveling overload valve and aerial work platform | |
| CN105134091B (en) | A kind of drilling derrick raising, decentralization buffering control device and its application method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |