CN207945283U - A kind of Pneumatic hydraulic speed control system - Google Patents
A kind of Pneumatic hydraulic speed control system Download PDFInfo
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- CN207945283U CN207945283U CN201721910378.0U CN201721910378U CN207945283U CN 207945283 U CN207945283 U CN 207945283U CN 201721910378 U CN201721910378 U CN 201721910378U CN 207945283 U CN207945283 U CN 207945283U
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Abstract
The utility model is a kind of Pneumatic hydraulic speed control system, including control module and controlled module, controlled module includes several drive wheel groups, each driving group wheel is equipped with two wheels, every wheel is all driven by a two point form variable hydraulic motor, every motor, which is equipped with, becomes displacement control mouth and oil inlet A, B, and oil inlet A, B are respectively by driving oil pipe to connect with driving oil circuit manifold A, B；Drive wheel group includes conventional wheel group and freewheel group, is driven in freewheel group and is equipped with free wheel drive valve on the driving oil pipe of the motor of every wheel；Control module includes total position valve, half displacement control valve and freewheel control valve；The delivery outlet of total position valve connects with the driving mouth of half displacement control valve and freewheel control valve；The control liquid outlet of half displacement control valve is connected by pipeline with the change displacement control mouth of every motor；The control liquid outlet of freewheel control valve is connected by pipeline with the driving mouth of every free wheel drive valve.
Description
Technical field
The utility model is related to a kind of speed control system of mining special haulage vehicle, especially a kind of Pneumatic hydraulic speed
Spend control system.
Background technology
Underground coal mine transport uses flat bed transport vehicle as the common haulage equipment of mining Material Transportation, in underground material transfer
It played an important role in the process.Go deep into the modernization restructuring of production facility of coalmine, large coal mine manufacturing enterprise
Production automation degree is higher and higher.In order to which large coal mine winning apparatus is transported to underground work face, it is necessary to dedicated auxiliary
Transporting equipment.
In order to meet the particular/special requirement of underground coal mine transport, hydraulic power carrier comes into being, and solves large-scale exploitation
The problem of equipment underground transportation.However some problems are had also discovered in actual use, such as：Hydraulic power carrier is automatically controlled
System failure rate is high, no-load speed carries to come up, and when carrier breaks down, vehicle dragging is difficult, is easily caused in dragging process
Hydraulic motor damage etc., these problems demands solve.
Invention content
Technical problem to be solved in the utility model is in view of the deficiencies of the prior art, it is low and high to provide a kind of failure rate
Imitate energy-efficient Pneumatic hydraulic speed control system.
Technical problem to be solved in the utility model is realized by technical solution below.The utility model is
A kind of Pneumatic hydraulic speed control system, its main feature is that：Including control module and controlled module,
The controlled module includes several drive wheel groups, each driving group wheel be equipped with symmetrical two wheels, every
Wheel is all driven by a two point form variable hydraulic motor, and every two point form variable hydraulic motor, which is equipped with, becomes displacement control mouth
With oil inlet A, B, the oil inlet A, oil inlet B are respectively by driving oil pipe and driving oil circuit manifold A, driving oil circuit manifold B
Connect；Above-mentioned drive wheel group includes conventional wheel group and freewheel group, and the two point form variable liquid of every wheel is driven in freewheel group
A free wheel drive valve is equipped on the driving oil pipe of pressure motor, the free wheel drive valve includes being connected and disconnecting two works
Position；
The control module includes total position valve, half displacement control valve and freewheel control valve, half displacement control valve and freedom
Wheel control valve is equipped with driving mouth, control liquid import and the outlet of control liquid；The delivery outlet and half displacement control valve of the total valve
Connect with the driving mouth of freewheel control valve；The control liquid outlet of half displacement control valve passes through pipeline and at above-mentioned every 2 points
The change displacement control mouth of formula variable hydraulic motor is connected；The freewheel control valve control liquid outlet by pipeline with every from
It is connected by the driving mouth of wheel drive valve.
Technical problem to be solved in the utility model can also be further realized by technical solution below.With
In a kind of upper Pneumatic hydraulic speed control system：The total valve is speed control valve, the driving mouth of speed control valve
It is communicated with control air source；Half displacement control valve and freewheel control valve are pneumatic control hydraulic reversing valve.
Technical problem to be solved in the utility model can also be further realized by technical solution below.With
In a kind of upper Pneumatic hydraulic speed control system：The total valve is hydraulic control lever, the drive of hydraulic control lever
It opens one's mouth and connects with control liquid feeding pipe, realize all-hydraulic control.
Technical problem to be solved in the utility model can also be further realized by technical solution below.With
In a kind of upper Pneumatic hydraulic speed control system：It drives and is equipped between oil circuit manifold A and driving oil circuit manifold B for controlling
The conducting ball valve of on off operating mode between system driving oil circuit manifold A, B.
The utility model, according to the load condition of hydraulic power carrier, is led to by designing controlled module and control module
Hydraulic powered plate transport vehicle is switched to suitable notch speed by the total position valve crossed in control module, is realized in low-speed heave-load, middling speed
It carries, the use demand of high speed light loading, to reach most efficient carrying state；It is set by the difference of conventional wheel group and freewheel group
Meter, and half displacement control valve and freewheel control valve are set, realize the transmission of half displacement control signal and freewheel control signal, it is real
Now to the control of operation status of motor and freewheel working condition；By setting ball valve, solves hydraulic powered plate transport vehicle and sending out
Problem can not be moved when raw failure, avoids that hydraulic motor is caused to damage.Compared with prior art, the utility model can effectively drop
The failure rate of low hydraulic power carrier improves working efficiency, meets the actual demand of underground coal mine transport.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of the utility model；
Fig. 2 is a kind of structural schematic diagram of alternative solution of Fig. 1；
In figure：1, total position valve；2, half displacement control valve；3, freewheel control valve；4, free wheel drive valve；5, two point form becomes
Measure hydraulic motor；6, ball valve.
Specific implementation mode
The specific technical solution of the utility model described further below, further in order to those skilled in the art
The utility model is understood, without constituting the limitation to its right.
Referring to Fig.1-2, a kind of Pneumatic hydraulic speed control system, including control module and controlled module,
The controlled module includes several drive wheel groups, each driving group wheel be equipped with symmetrical two wheels, every
Wheel is all driven by a two point form variable hydraulic motor 5, and every two point form variable hydraulic motor 5 is equipped with change displacement control
Mouth and oil inlet A, B, the oil inlet A, oil inlet B pass through respectively to be driven oil pipe and drives oil circuit manifold A, drives oil circuit manifold
B connects；Above-mentioned drive wheel group includes conventional wheel group and freewheel group, and the two point form variable liquid of every wheel is driven in freewheel group
A free wheel drive valve 4 is equipped on the driving oil pipe of pressure motor 5, the free wheel drive valve 4 includes being connected and disconnecting two
A station；
The control module includes total position valve 1, half displacement control valve 2 and freewheel control valve 3, half displacement control valve, 2 He
Freewheel control valve 3 is equipped with driving mouth, control liquid import and the outlet of control liquid；The delivery outlet and half discharge capacity of the total valve 1
The driving mouth of control valve 2 and freewheel control valve 3 connects；Half displacement control valve 2 control liquid outlet by pipeline with it is upper
The change displacement control mouth for stating every two point form variable hydraulic motor 5 is connected；The control liquid outlet of the freewheel control valve 3 passes through
Pipeline is connected with the driving mouth of every free wheel drive valve 4.
Above-mentioned total valve 1 is equipped with low-grade, middle-grade and high-grade three step velocitys switch station；
Low-grade station：Total position valve 1, which exports, to interrupt, and half displacement control valve 2 and freewheel control valve 3 are exported without control signal,
Two point form variable hydraulic motor 5 is in delivery working condition, and driving force is maximum；
Middle-grade station：Total position valve 1 generates driving force to half displacement control valve 2, and half displacement control valve 2 exports half displacement signal
To the change displacement control mouth of two point form variable hydraulic motor 5, free wheel drive valve 4 is located at conducting station, all two point form variables
Hydraulic motor 5 is in half displacement operation state；
High-grade station：Total position valve 1 while double of displacement control valve 2 and freewheel control valve 3 generate driving force, two point form change
It measures hydraulic motor 5 and keeps half displacement operation state；Freewheel control valve 3 exports control signal to free wheel drive valve 4, freewheel
The commutation of valve 4 is driven to be in off working state to station, corresponding freewheel group is disconnected；
The total valve 1 is speed control valve, and the driving mouth of speed control valve is communicated with control air source；The half discharge capacity control
Valve 2 and freewheel control valve 3 processed are pneumatic control hydraulic reversing valve；
The total valve 1 is hydraulic control lever, and the driving mouth of hydraulic control lever connects with control liquid feeding pipe, real
Existing all-hydraulic control；
It drives and is equipped between oil circuit manifold A and driving oil circuit manifold B for controlling break-make shape between driving oil circuit manifold A, B
The conducting ball valve 6 of state.
The utility model proposes a kind of Pneumatic hydraulic speed control system, mainly by total position valve 1；Half displacement control valve 2；
Freewheel control valve 3；Free wheel drive valve 4；Two point form variable hydraulic motor 5；The part such as ball valve 6 forms（In diagram, alphabetical P
Indicate control liquid for entrance；Tee indicates hydraulic oil-returning mouth；Alphabetical K1 indicates the control liquid outlet of half displacement control valve 2；Letter
K2 indicates the control liquid outlet of freewheel control valve 3；Alphabetical K indicates the change displacement control mouth of two point form variable hydraulic motor 5；Word
Female A, B indicate driving oil circuit manifold）.Functions are as follows：
Total position valve 1：Total position valve 1 is using the compressed air of engine on hydraulic powered plate transport vehicle as control air source
（Fig. 1 is shown）, control air source is connect with the V mouths of total position valve 1, when total position valve 1 is in left position, half displacement control valve 2 and freedom
The driving mouth of wheel control valve 3 is communicated by WX, YZ mouth of total position valve 1 with air, and system is in low or first gear working condition；When total position
When valve 1 is in an intermediate position, control air source acts on half displacement control valve 2 by VY mouthfuls, and K1 sends out half displacement control signal, is
System is in mid ranger working condition, and hydraulic powered plate transport vehicle speed doubles；When total position valve 1 is in right position, system
In top gear working condition, hydraulic powered plate transport vehicle speed doubles again；Driver can be big according to car load
Small switching gear, to meet the transport requirement of low-speed heave-load, high speed light loading.
Half displacement control valve 2：Half displacement control valve 2 is a kind of two-bit triplet reversal valve, when it drives mouth to have pressure gas source
When signal, half displacement control valve 2 switches to left position work, and control liquid passes through half displacement control for the control liquid being passed through at entrance P
Valve 2 is exported from K1 mouthfuls, and each two point form variable hydraulic motor 5 of hydraulic powered plate transport vehicle is made to be in half displacement operation shape
State, and then transport vehicle speed doubles；When the driving mouth no pressure air source signal function of half displacement control valve 2, half discharge capacity
Control valve 2 switches to right position work, and the signal output of K1 is related with the working condition of freewheel control valve 3 at this time.
Freewheel control valve 3：3 operation principle of freewheel control valve is the same as half displacement control valve 2.At freewheel control valve 3
When top gear working condition, freewheel control valve 3 output by K1 and K2 realize respectively half discharge capacity of haulage vehicle with
And freewheel control, speed doubles again on the basis of mid ranger at this time, meets the requirement of vehicle underloading high speed.
Free wheel drive valve 4：Free wheel drive valve 4 acts on A, B mouth of two point form variable hydraulic motor 5.At system
When low or first gear and mid ranger working condition, K2 mouthfuls are in the work of right position without freewheel control signal output, free wheel drive valve 4
Each two point form variable hydraulic motor 5 of state, transport vehicle is involved in driving, meets low-speed heave-load working condition requirement；At system
When top gear working condition, K2 mouthfuls have freewheel control signal output, free wheel drive valve 4 to be in left position working condition, drive
The two point form variable hydraulic motor 5 of dynamic freewheel is in free state, is not involved in driving, and transport vehicle speed improves in original basis
One times；
Two point form variable hydraulic motor 5：Two point form variable hydraulic motor 5 uses two point variable formulas, by becoming displacement control
The discharge capacity of mouth K control motors.When the half displacement control signal function that K1 is sent out is in the control mouth K of two point form variable hydraulic motor 5
When, two point form variable hydraulic motor 5 is in half displacement operation state, and transport vehicle speed doubles；When two point form variable delivery hydraulic
When the change displacement control mouth K of motor 5 is without control signal function, two point form variable hydraulic motor 5 is in delivery working condition, this
When 5 rotating speed of two point form variable hydraulic motor reduces, torque improves, meet vehicle low-speed heave-load requirement.
Ball valve 6：Ball valve 6 acts between driving oil circuit manifold A, the B of two point form variable hydraulic motor 5, control oil circuit A, B
Break-make.When vehicle drive system breaks down（Such as engine failure）, vehicle can not normally travel when, ball valve 6 can be opened,
Make to be connected between driving oil circuit manifold A, B, this addresses the problem hydraulic powered plate transport vehicles to break down and can not move, and makes
The phenomenon that at driving hydraulic motor damage；It needs to close ball valve 6 when hydraulic powered plate transport vehicle works normally, otherwise transport
Vehicle can not normally travel.
The operation principle of this system：Total position valve 1 controls the speed of hydraulic powered plate transport vehicle, make vehicle be divided into low speed,
Three kinds of middling speed, high speed operating modes.Low-speed mode can be used when the vehicle is fully laden, K1, K2 become without control signal output, two point form at this time
Amount hydraulic motor 5 is in delivery state, and system speed is most slow, and driving force is maximum；In can be used when vehicle medium load
Fast mode, half displacement control signal of K1 outputs at this time, two point form variable hydraulic motor 5 are in half displacement condition, system speed
It doubles, driving force reduces half；High-speed mode can be used when the vehicle is unladen, at this time K1, K2 export respectively half discharge capacity and
Freewheel controls signal, and two point form variable hydraulic motor 5 is in half displacement condition, and front driving wheel becomes freewheel and do not provide drive
Power, system speed double again, and driving force further decreases.It can meet vehicle low speed weight by the switching of the above speed
It carries, the working condition requirements such as load and high speed light loading in middling speed, improves the working efficiency of hydraulic powered plate transport vehicle.
The speed control shown in Fig. 1 can be selected in above-mentioned total valve 1, half displacement control valve 2 and freewheel control valve 3
Hydraulic control lever, liquid controlled reversing shown in Fig. 2 also can be selected in valve, pneumatic control hydraulic reversing valve and pneumatic control hydraulic reversing valve
Valve and pilot operated directional control valve replace, and all-hydraulic control mode shown in Fig. 2 can also realize same function.
Compared with prior art, the utility model can effectively reduce the failure rate of hydraulic power carrier, improve work effect
Rate, Tthe utility model system use two kinds of working medias of compressed air and hydraulic pressure（Or it is all-hydraulic）, there is anti-explosion safety, resistance to underground
The advantages that wet environment.Installing the hydraulic power carrier failure rate of the system significantly reduces, meanwhile, the empty wagons speed of service improves
Nearly twice, haulage time is greatly saved.
Claims (4)
1. a kind of Pneumatic hydraulic speed control system, it is characterised in that：Including control module and controlled module,
The controlled module includes several drive wheel groups, and each driving group wheel is equipped with symmetrical two wheels, every wheel
All driven by two point form variable hydraulic motor, every two point form variable hydraulic motor be equipped with become displacement control mouth and into
Hydraulic fluid port A, B, the oil inlet A, oil inlet B are respectively by driving oil pipe to connect with driving oil circuit manifold A, driving oil circuit manifold B；
Above-mentioned drive wheel group includes conventional wheel group and freewheel group, and the two point form variable hydraulic motor of every wheel is driven in freewheel group
Driving oil pipe on be equipped with a free wheel drive valve, the free wheel drive valve includes being connected and disconnecting two stations；
The control module includes total position valve, half displacement control valve and freewheel control valve, half displacement control valve and freewheel control
Valve processed is equipped with driving mouth, control liquid import and the outlet of control liquid；The delivery outlet and half displacement control valve of the total valve and from
Connected by the driving mouth of wheel control valve；The control liquid outlet of half displacement control valve is become by pipeline and above-mentioned every two point form
The change displacement control mouth for measuring hydraulic motor is connected；The control liquid outlet of the freewheel control valve passes through pipeline and every freewheel
The driving mouth of valve is driven to be connected.
2. a kind of Pneumatic hydraulic speed control system according to claim 1, it is characterised in that：The total valve is speed
The driving mouth of control valve, speed control valve is communicated with control air source；Half displacement control valve and freewheel control valve are gas
Control hydraulic directional control valve.
3. a kind of Pneumatic hydraulic speed control system according to claim 1, it is characterised in that：The total valve is hydraulic pressure
Handle is controlled, the driving mouth of hydraulic control lever connects with control liquid feeding pipe.
4. a kind of Pneumatic hydraulic speed control system according to claim 1, it is characterised in that：Drive oil circuit manifold A with
The conducting ball valve for controlling on off operating mode between driving oil circuit manifold A, B is equipped between driving oil circuit manifold B.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721910378.0U CN207945283U (en) | 2017-12-30 | 2017-12-30 | A kind of Pneumatic hydraulic speed control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721910378.0U CN207945283U (en) | 2017-12-30 | 2017-12-30 | A kind of Pneumatic hydraulic speed control system |
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| CN207945283U true CN207945283U (en) | 2018-10-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006220A (en) * | 2017-12-30 | 2018-05-08 | 江苏天明特种车辆有限公司 | Pneumatic hydraulic speed control system |
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2017
- 2017-12-30 CN CN201721910378.0U patent/CN207945283U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108006220A (en) * | 2017-12-30 | 2018-05-08 | 江苏天明特种车辆有限公司 | Pneumatic hydraulic speed control system |
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