CN210769612U - Control valve for emergency rescue vehicle - Google Patents
Control valve for emergency rescue vehicle Download PDFInfo
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- CN210769612U CN210769612U CN201921656919.0U CN201921656919U CN210769612U CN 210769612 U CN210769612 U CN 210769612U CN 201921656919 U CN201921656919 U CN 201921656919U CN 210769612 U CN210769612 U CN 210769612U
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Abstract
A control valve for an emergency rescue vehicle. The problem of current rescue car owner valve control troublesome, the structure is complicated is solved. It includes the valve body, the valve body link including advancing oil return, feedback control and work and ally oneself with, advance oil return and ally oneself with and be equipped with main oil inlet, oil return and flow divider valve, all be equipped with work hydraulic fluid port, work switching-over valve, pressure compensator and work control valve on each work is linked up, feedback control on ally oneself with and be equipped with relief pressure valve and constant flow valve, main oil inlet be linked together through relief pressure valve and work control valve and make work switching-over valve switching-over through the work control valve, main oil inlet link to each other with pressure compensator, work hydraulic fluid port respectively through the work switching-over valve, pressure compensator's oil-out links to each other with constant flow valve through the feedback oil circuit, constant flow valve's oil-out is linked together with the oil. The utility model discloses simple structure still has, processing is convenient, long service life, leads to oily ability reinforce, loss of pressure advantage such as little.
Description
Technical Field
The utility model relates to a rescue car hydraulic control system speedily carries out rescue work, concretely relates to rescue car is with control valve speedily carries out rescue work.
Background
Various fire rescue equipment, special protection equipment for firemen, a fire breaking tool and a fire source detector are arranged on the emergency rescue vehicle, and the emergency rescue vehicle is a special service fire vehicle which is responsible for emergency rescue tasks. The emergency rescue vehicle structurally comprises a vehicle chassis, an upper loading compartment body (in which emergency rescue equipment is loaded), a power takeoff and transmission device, a generator (shaft belt type or independent generator set), a winch (hydraulic or electric), a vehicle-mounted crane (generally of a folding arm type and behind a vehicle body), a lifting lighting system and an electrical system. According to different purposes of emergency rescue fire-fighting vehicles, the specific configuration of the vehicle is different, and the vehicle is not always provided with all emergency rescue vehicles such as a truck-mounted crane, a winch, a generator, a lifting lamp and the like. The emergency rescue fire truck is also named as an emergency rescue vehicle, a rescue fire truck, a special emergency rescue vehicle and the like. The emergency rescue fire truck has the functions of hoisting, self-rescue/traction, obstacle removal, power generation, illumination and the like, and can be provided with a large number of various fire-fighting equipment or tools such as breaking, detection, leakage stoppage, protection and the like; the emergency rescue fire truck is widely applied to various fields of fire fighting troops, dealing with various natural disasters, emergencies, rescue and the like. The main valve that has set up rescue car of speedily carrying out rescue work is formula structure as an organic whole usually, and the runner processing difficulty in the main valve, and the structure is complicated, and manufacturing cost is high, realizes the switching-over inefficiency through manually operation switching-over valve usually during current main valve control moreover, and control is troublesome, and the during operation needs control pressure height, causes the product energy consumption height, and spare part damages easily, and product life is short.
SUMMERY OF THE UTILITY MODEL
For solving the current rescue car owner valve control trouble of speedily carrying out rescue work among the background art, the problem that the structure is complicated, the utility model provides a rescue car is with control valve speedily carrying out rescue work.
The technical scheme of the utility model is that: the utility model provides a rescue car control valve that speedily carries out rescue work, includes the valve body, the valve body link with at least one work including advancing oil return, feedback control and ally oneself with, advance the oil return and be equipped with main oil inlet, oil return and flow divider valve, each work is linked up and all is equipped with work hydraulic fluid port, work switching-over valve, pressure compensator and work control valve, feedback control link on be equipped with relief pressure valve and constant flow valve, main oil inlet be linked together through relief pressure valve and work control valve and make the switching-over of work switching-over valve through the work control valve, main oil inlet link to each other with pressure compensator, work hydraulic fluid port respectively through the work switching-over valve, the oil-out of pressure compensator links to each other with constant flow valve through the feedback oil circuit, constant flow valve's oil-out and oil.
As an improvement of the utility model, the oil-out of every pressure compensator is linked together through check valve and feedback oil circuit and is linked together through the pressure compensator spring chamber of feedback oil circuit and work antithetical couplet.
As a further improvement of the utility model, the feedback oil circuit is provided with a throttling orifice.
As a further improvement, each work is linked to all be equipped with safe overflow valve, safe overflow valve locate between work hydraulic fluid port and the oil return opening.
As the utility model discloses a further improvement, each work allies oneself with and sets up two work control valves, two the work control valve be a set of and accept the pressure oil of relief pressure valve oil-out respectively and export the switching-over of work switching-over valve control work switching-over valve to work.
As a further improvement of the utility model, the work control valve be the electric proportional pressure reducing valve, the work switching-over valve be the tribit eight-way switching-over valve.
As a further improvement, the oil inlet and return union on be equipped with a feedback overflow valve, the feedback overflow valve between feedback oil circuit and the oil return opening.
As a further improvement, the feedback control unite and be equipped with second feedback overflow valve, second feedback overflow valve locate between feedback oil circuit and the oil return opening.
As a further improvement, the valve body including the work antithetical couplet that ally oneself with that the work antithetical couplet is the piece type and splices parallelly connected setting each other more, advance the both sides that the oil antithetical couplet and feedback control ally oneself with and locate the work antithetical couplet.
As a further improvement, the flow divider valve is arranged between the main oil inlet and the oil return port, the opening size of the pressure oil interaction control flow divider valve of the pressure oil of the main oil inlet and the pressure oil of the feedback oil path.
The beneficial effects of the utility model are that, the utility model discloses a switching-over of work switching-over valve is controlled to the work control valve, and control is convenient and reliable, controls through the pressure oil after the relief pressure valve decompression moreover, and is little to the impact of spare part for product long service life, the utility model discloses still have simple structure, processing is convenient, long service life, leads to oily ability reinforce, pressure loss advantage such as little.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a hydraulic schematic diagram of an embodiment of the present invention.
In the figure, 1, a valve body; 2. an oil inlet and return link; 21. a flow divider valve; 22. a first feedback overflow valve; 3. a feedback control unit; 31. a pressure reducing valve; 32. a constant flow valve; 33. a choke; 34. a second feedback overflow valve; 4. a working unit; 41. a working oil port; 42. a working reversing valve; 43. a pressure compensator; 44. a working control valve; 45. a one-way valve; 46. a safety overflow valve;
p, a main oil inlet; t, an oil return port; LS and a feedback oil path.
Detailed Description
The embodiments of the present invention will be further explained with reference to the accompanying drawings:
by figure 1 combine shown in figure 2, a rescue car control valve that speedily carries out rescue work, including valve body 1, the valve body including advance the oil return and ally oneself with 2, feedback control and ally oneself with 3 and at least one work and ally oneself with 4, advance the oil return and ally oneself with and be equipped with main oil inlet P, oil return T and flow divider valve 21, all be equipped with work hydraulic fluid port 41, work switching-over valve 42, pressure compensator 43 and work control valve 44 in each work antithetical couplet, feedback control ally oneself with and be equipped with relief pressure valve 31 and constant flow valve 32, main oil inlet be linked together through relief pressure valve and work control valve and make the work switching-over valve commutate through the work control valve, main oil inlet link to each other with pressure compensator, work hydraulic fluid port respectively through the work switching-over valve, the oil-out of pressure compensator links to each other with constant flow valve through feedback oil circuit LS, constant. The beneficial effects of the utility model are that, the utility model discloses a switching-over of work switching-over valve is controlled to the work control valve, and control is convenient and reliable, controls through the pressure oil after the relief pressure valve decompression moreover, and is little to the impact of spare part for product long service life, the utility model discloses still have simple structure, processing is convenient, long service life, leads to oily ability reinforce, pressure loss advantage such as little. The utility model discloses a valve body, sealing member and other spare parts of low temperature resistant material for the product can work in the operational environment of-40 degrees. The utility model discloses a mode control work switching-over valve switching-over of low pressure liquid accuse for the product switching-over is simple reliable, and control end pressure is little, is difficult to damage the valve inner part, makes product sealing performance good, long service life.
The oil outlet of each pressure compensator is communicated with a feedback oil way through a one-way valve 45 and is communicated with a pressure compensator spring cavity of the working joint through the feedback oil way. The structure ensures that the oil outlets of the pressure compensators can reliably enter the feedback oil path, and the opening size of each pressure compensator is adjusted through the feedback oil path, so that different work associations can coordinate to act, and the action is reliable.
And the feedback oil path is provided with a throttling port 33. The arrangement of the throttling port enables the pressure in the system to be more stable and the product impact to be small.
Each working link is provided with a safety overflow valve 46 which is arranged between the working oil port and the oil return port. The pressure of the working oil port is more stable and safer due to the arrangement of the safety overflow valve, so that the pressure of the working oil port can overflow when exceeding the set value of the safety overflow valve, a high-pressure damage system and parts are avoided, and the safety performance is higher.
Two working control valves are arranged on each working connection, and the two working control valves are in a group and respectively receive pressure oil from oil outlets of the pressure reducing valves and output the pressure oil to the working reversing valves to control the reversing of the working reversing valves. The structure enables the product to be controlled more conveniently and reliably, the pressure oil after being decompressed by the decompression valve is small in pressure, the product acts reliably and quickly, and parts in the valve body are not easy to lose. Specifically, the working control valve is an electric proportional pressure reducing valve, and the working reversing valve is a three-position eight-way reversing valve. The working reversing valve is a hydraulic control reversing valve, and more specifically, the working reversing valve is a hydraulic control reversing valve with a manual control function. The electric proportional pressure reducing valve can accurately supply oil to the working reversing valve according to the current, and a valve rod of the working reversing valve is opened, so that oil feeding of a product is accurately controlled.
The oil inlet-return union is provided with a first feedback overflow valve 22, and the first feedback overflow valve is arranged between the feedback oil path and the oil return port. Specifically, the feedback control unit is provided with a second feedback overflow valve 34, and the second feedback overflow valve is arranged between the feedback oil path and the oil return port. The utility model discloses set up two feedback overflow valves, be the setting of high low pressure usually, the pressure of opening of an overflow valve is higher than another promptly, and the pressure of opening of setting up the first feedback overflow valve on advancing the oil return antithetical couplet is higher than locating the second feedback overflow valve on the feedback control antithetical couplet usually. The structure ensures that the product can still reliably run when one feedback overflow valve fails, and the two feedback overflow valves are arranged on two sides of the working union, so that the safety performance is higher.
The valve body include and ally oneself with many works, many works are allied oneself with and are the piece formula and splice parallelly connected setting each other, the both sides that ally oneself with and locate the work antithetical couplet of advance oil return antithetical couplet and feedback control antithetical couplet. The structure enables the product to be convenient to process and convenient to splice and assemble.
The flow divider is arranged between the main oil inlet and the oil return port, and the pressure oil of the main oil inlet and the pressure oil of the feedback oil path interact to control the opening size of the flow divider. The structure can shunt according to the system requirement, and reduces the energy consumption.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.
Claims (10)
1. A control valve for an emergency rescue vehicle comprises a valve body (1) and is characterized in that the valve body comprises an oil inlet and return link (2), a feedback control link (3) and at least one working link (4), wherein the oil inlet and return link is provided with a main oil inlet (P), an oil return port (T) and a flow divider valve (21), each working link is provided with a working oil port (41), a working reversing valve (42), a pressure compensator (43) and a working control valve (44), the feedback control link is provided with a pressure reducing valve (31) and a constant flow valve (32), the main oil inlet is communicated with the working control valve through the pressure reducing valve and enables the working reversing valve to be reversed through the working control valve, the main oil inlet is respectively connected with the pressure compensator and the working oil port through the working reversing valve, the oil outlet of the pressure compensator is connected with the constant flow valve through a feedback oil path (LS), and the oil outlet of the constant flow valve is communicated with the oil return port.
2. The control valve for emergency rescue vehicle according to claim 1, characterized in that the oil outlet of each pressure compensator is communicated with the feedback oil path through a one-way valve (45) and communicated with the spring chamber of the pressure compensator of the working unit through the feedback oil path.
3. The control valve for emergency rescue vehicle according to claim 1, characterized in that the feedback oil path is provided with a choke (33).
4. The control valve for emergency rescue vehicle according to claim 1, wherein each working link is provided with a safety overflow valve (46), and the safety overflow valve is arranged between the working oil port and the oil return port.
5. The control valve for an emergency rescue vehicle as claimed in claim 1, wherein each working link is provided with two working control valves, and the two working control valves are in a group and respectively receive pressure oil at an oil outlet of the pressure reducing valve and output the pressure oil to the working reversing valve to control the reversing of the working reversing valve.
6. The control valve for an emergency rescue vehicle according to claim 1 or 5, wherein the working control valve is an electro-proportional pressure reducing valve, and the working reversing valve is a three-position eight-way reversing valve.
7. The control valve for the emergency rescue vehicle according to claim 1, wherein the oil inlet-return union is provided with a first feedback overflow valve (22), and the first feedback overflow valve is arranged between the feedback oil path and the oil return port.
8. The control valve for the emergency rescue vehicle according to claim 1, wherein the feedback control link is provided with a second feedback overflow valve (34), and the second feedback overflow valve is arranged between the feedback oil path and the oil return port.
9. The control valve for an emergency rescue vehicle as claimed in claim 1, wherein the valve body comprises a multi-working-joint, the multi-working-joint is in a sheet type mutual splicing parallel arrangement, and the oil inlet and return joint and the feedback control joint are arranged at two sides of the working joint.
10. The control valve for an emergency rescue vehicle according to claim 1, wherein the diverter valve is disposed between the main oil inlet and the oil return port, and the opening size of the diverter valve is controlled by interaction between pressure oil in the main oil inlet and pressure oil in the feedback oil path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921656919.0U CN210769612U (en) | 2019-09-30 | 2019-09-30 | Control valve for emergency rescue vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921656919.0U CN210769612U (en) | 2019-09-30 | 2019-09-30 | Control valve for emergency rescue vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210769612U true CN210769612U (en) | 2020-06-16 |
Family
ID=71039781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921656919.0U Active CN210769612U (en) | 2019-09-30 | 2019-09-30 | Control valve for emergency rescue vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210769612U (en) |
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2019
- 2019-09-30 CN CN201921656919.0U patent/CN210769612U/en active Active
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