CN212717431U - Sand-throwing fire-fighting train impeller rotation control valve group and hydraulic system - Google Patents
Sand-throwing fire-fighting train impeller rotation control valve group and hydraulic system Download PDFInfo
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- CN212717431U CN212717431U CN202020285438.XU CN202020285438U CN212717431U CN 212717431 U CN212717431 U CN 212717431U CN 202020285438 U CN202020285438 U CN 202020285438U CN 212717431 U CN212717431 U CN 212717431U
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- 239000003921 oil Substances 0.000 claims description 102
- 239000010720 hydraulic oil Substances 0.000 claims description 34
- 238000013016 damping Methods 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 4
- 238000005488 sandblasting Methods 0.000 claims description 3
- 238000005422 blasting Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 3
- 239000013589 supplement Substances 0.000 abstract description 2
- 230000001502 supplementing effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Abstract
The utility model discloses a sand-throwing fire-fighting train impeller rotation control valve group and hydraulic system. The sand-throwing fire-fighting train impeller rotation control valve group comprises an electromagnetic valve, an overflow valve, a first logic valve and an electro-hydraulic reversing valve; the hydraulic system comprises a sand-throwing and extinguishing train impeller rotation control valve group, a variable plunger pump, a quantitative gear pump and an external control oil source valve. The utility model can realize the requirement of the impeller on rotating speed change, and the impeller is reversed under the condition of material blockage, thereby helping the material to be discharged; the impeller rotation control valve group of the sand-throwing fire-fighting train can realize that the system is more energy-saving during unloading, the system is protected from impact during overflow, the system is prevented from being sucked to be empty due to inertial rotation during oil supplement, the externally-controlled leakage electro-hydraulic reversing valve is large in flow, strong in interchangeability and better in reversing performance, and powerful guarantee is provided for realizing the functions of the sand-throwing fire-fighting train.
Description
Technical Field
The patent relates to a sand-throwing fire-fighting train impeller rotation control valve group and a hydraulic system, and belongs to the technical field of hydraulic application.
Background
With the rapid development of sand-throwing fire-extinguishing technology, the mechanization and automation degree of the sand-throwing fire-extinguishing vehicle is higher and higher. The impeller rotating mechanism is a main functional part of the sand-throwing fire extinguishing vehicle, has the functional requirements of material throwing, material discharging, speed regulation and the like, and has the performance characteristics of high rotating speed, large torque, large impact in the working process and the like. Therefore, how to realize the control of the impeller rotation mechanism is very important.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a sand-throwing fire-fighting train impeller rotation control valve group, which can realize the requirement of impeller rotation speed change; on the other hand, the impeller can be reversely rotated under the condition of material blockage, so that the material is discharged; the unloading is more energy-saving, the impact is prevented during the overflow, and the system suction caused by inertial rotation is prevented during the oil supplement.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a sand-throwing fire-fighting train impeller rotation control valve group comprises an electromagnetic valve, an overflow valve, a first logic valve and an electro-hydraulic reversing valve;
the electro-hydraulic reversing valve is connected with an oil inlet of the first logic valve, and a control end on the spring side of the first logic valve is connected with an overflow valve and an electromagnetic valve simultaneously; the oil outlet of the electro-hydraulic reversing valve returns to a hydraulic oil tank after passing through an impeller rotating motor;
when the electromagnetic valve is in power failure, the spring side control end of the first logic valve is communicated to the hydraulic oil tank, and the first logic valve is used for unloading;
when the electromagnetic valve is electrified, the maximum pressure of the spring side control end of the first logic valve is the set pressure of the overflow valve, and the first logic valve is used for overflow; the electro-hydraulic reversing valve is in a first conduction position or a second conduction position for oil discharge according to the power-on state of any electromagnet, so that the oil inlet of the oil inlet is output from the first conduction position or the second conduction position to enable the impeller rotating motor to rotate forwards or reversely.
Further, when the electromagnetic valve is electrified, the opening pressure of the first logic valve is the maximum pressure of the overflow valve plus the preset pressure of the spring on the spring side of the first logic valve.
Furthermore, two ends of the impeller rotating motor are respectively provided with an oil supplementing one-way valve for supplementing oil from the hydraulic oil tank to the impeller rotating motor.
Further, the system also comprises an external control oil source valve which provides external control pressure oil for the sand-throwing fire-extinguishing train impeller rotation control valve group.
Further, the external control oil source valve comprises a filter valve, an overflow valve, a second logic valve and a damping hole;
the inlet oil is respectively connected with an overflow valve, a second logic valve and an oil source outlet for outputting external control pressure oil through the filter valve, the outlet of the overflow valve is communicated to a hydraulic oil tank, and the spring side of the second logic valve is communicated to the hydraulic oil tank through a damping hole.
A hydraulic system comprises a sand-throwing and extinguishing train impeller rotation control valve group, a variable plunger pump, a quantitative gear pump and an external control oil source valve;
the variable plunger pump sucks oil in a hydraulic oil tank to the sand-throwing fire extinguishing vehicle impeller rotation control valve group, and the sand-throwing fire extinguishing vehicle impeller rotation control valve group supplies oil to the impeller rotation motor to enable the impeller rotation motor to rotate forwards or reversely;
the quantitative gear pump sucks oil of the hydraulic oil tank to the external oil control source valve, and the external oil control source valve provides external control pressure oil for the sand-throwing and extinguishing train impeller rotation control valve group through the oil source outlet.
Furthermore, the sand-throwing fire-fighting train impeller rotation control valve group comprises an electromagnetic valve, an overflow valve, a first logic valve and an electro-hydraulic reversing valve;
the electro-hydraulic reversing valve is connected with an oil inlet of the first logic valve, and a control end on the spring side of the first logic valve is connected with an overflow valve and an electromagnetic valve simultaneously; the oil outlet of the electro-hydraulic reversing valve returns to a hydraulic oil tank after passing through an impeller rotating motor;
when the electromagnetic valve is in power failure, the spring side control end of the first logic valve is communicated to the hydraulic oil tank, and the first logic valve is used for unloading;
when the electromagnetic valve is electrified, the maximum pressure of the spring side control end of the first logic valve is the set pressure of the overflow valve, and the first logic valve is used for overflow; the electro-hydraulic reversing valve is in a first conduction position or a second conduction position for oil discharge according to the power-on state of any electromagnet, so that the oil inlet of the oil inlet is output from the first conduction position or the second conduction position to enable the impeller rotating motor to rotate forwards or reversely.
Further, the controller controls the sand-throwing fire-extinguishing vehicle impeller rotation control valve group to supply oil to the impeller rotation motor according to the pressure of the sand-throwing fire-extinguishing vehicle throwing system collected by the pressure sensor.
Further, the pressure sensor is installed on the sand-throwing fire-extinguishing train impeller rotation control valve group.
Furthermore, the variable plunger pump and the quantitative gear pump are connected with the engine through a power takeoff or a transfer case, and absorb oil from a hydraulic oil tank.
The utility model discloses the beneficial effect who reaches:
1. the requirement of rotation speed change of the impeller can be met, the impeller is reversely rotated under the condition of material blockage, and the material is discharged;
2. the impeller rotation control valve group comprises an electromagnetic valve, an overflow valve, a logic valve, an oil supplementing one-way valve and an electro-hydraulic reversing valve, so that energy can be saved when the system is unloaded, the system is protected by preventing impact when the system overflows, the system is prevented from being sucked to be empty due to inertial rotation when the system is supplemented with oil, the externally-controlled leakage electro-hydraulic reversing valve is large in flow, strong in interchangeability and better in reversing performance;
3. the external control oil source valve provides reliable control pressure oil for the electro-hydraulic reversing valve;
4. the impeller rotation control valve group and the hydraulic system provide powerful guarantee for the function realization of the sand-throwing fire-extinguishing vehicle.
Drawings
FIG. 1-schematic diagram of a hydraulic system;
FIG. 2-a schematic diagram of an impeller rotation control valve assembly;
FIG. 3-schematic diagram of an externally controlled oil supply valve;
FIG. 4 is a three-dimensional model diagram of an impeller rotation control valve set;
a hydraulic oil tank 1; a variable displacement plunger pump 2; a pressure sensor 3; an impeller rotation control valve group 4; a quantitative gear pump 5; an impeller rotating motor 6; an external control oil source valve 7; a solenoid valve 4.1; an overflow valve 4.2; a logic valve 4.3; 4.4 of oil supplementing one-way valve; 4.5 of an oil supplementing one-way valve; an electro-hydraulic directional valve 4.6; (ii) a A filter valve 7.1; an overflow valve 7.2; a logic valve 7.3; a damping orifice 7.4.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1, the utility model provides a technical scheme is a hydraulic system including sand-blasting extinguishing train impeller rotation control valves, including hydraulic tank 1, variable plunger pump 2, pressure sensor 3, impeller rotation control valves 4, quantitative gear pump 5, impeller rotation motor 6 and outer accuse oil source valve 7.
The variable plunger pump 2 and the quantitative gear pump 5 are connected with an engine through a power takeoff or a transfer case, oil is absorbed from the hydraulic oil tank 1, the variable plunger pump 2 has an electric proportional speed regulating function, an oil outlet of the variable plunger pump 2 is connected with an impeller rotation control valve group 4, a pressure sensor 3 is arranged on the impeller rotation control valve group 4, pressure of a scattering system can be fed back to a controller for subsequent control, and the impeller rotation control valve group 4 is connected with an impeller rotation motor 6.
The quantitative gear pump 5 absorbs oil from the hydraulic oil tank 1, the oil outlet of the quantitative gear pump 5 is connected with an external oil control source valve 7, the external oil control source valve 7 provides reasonable and stable external control pressure oil for the impeller rotation control valve group 4 through an LS port, and an FP port of the external oil control source valve can provide hydraulic oil for other systems.
With reference to fig. 2 and 4, the impeller rotation control valve set 4 of the present invention comprises a solenoid valve 4.1, an overflow valve 4.2, a logic valve 4.3, an oil-supplying check valve 4.4, an oil-supplying check valve 4.5 and an electro-hydraulic directional valve 4.6.
An oil inlet P port of the impeller rotation control valve group 4 is connected with a P port of an electric liquid reversing valve 4.6, the electric liquid reversing valve 4.6 is connected with a logic valve 4.3 in parallel, a control end of a spring side of the logic valve 4.3 is connected with an overflow valve 4.2, the overflow valve 4.2 is connected with an electromagnetic valve 4.1 in parallel, when the electromagnetic valve 4.1 is not electrified, the spring side control end of the logic valve 4.3 is connected with a hydraulic oil tank, the opening pressure of the logic valve 4.3 is small at the moment and plays a role of an unloading valve, when the electromagnetic valve 4.1 is electrified, the maximum pressure of the spring side control end of the logic valve 4.3 is the set pressure of the overflow valve 4.2, and the opening pressure of the logic valve 4.3 is the maximum pressure of the overflow valve 4.2 plus the spring preset pressure of the spring side of the logic. An A, B port of the electro-hydraulic reversing valve 4.6 is respectively connected with oil-supplementing one-way valves 4.5 and 4.4, and the functions of reversing and preventing air suction are achieved.
Referring to fig. 3, the external control oil source valve 7 includes a filter valve 7.1, an overflow valve 7.2, a logic valve 7.3 and a damping hole 7.4.
The GP port of the oil inlet end of the external control oil source valve 7 is connected with the filter valve 7.1, the filter valve 7.1 is connected with the overflow valve 7.2 and the logic valve 7.3, the spring side of the logic valve 7.3 is connected with the damping hole 7.4, and the LS port of the oil source port between the filter valve 7.1 and the logic valve 7.3 provides reasonable and stable external control pressure oil for the impeller rotation control valve group 4.
When in implementation: the engine drives the variable plunger pump 2 to absorb oil from the hydraulic oil tank 1, pressure oil supplied by the variable plunger pump 2 enters the impeller rotation control valve group 4 through the oil inlet P, the variable plunger pump 2 has an electric proportional speed regulating function, when the impeller rotation motor 6 does not work, the electric proportional valve of the variable plunger pump 2 is not electrified, the variable plunger pump 2 outputs hydraulic oil with the minimum discharge capacity, the electromagnetic valve 4.1 in the impeller rotation control valve group 4 is not electrified, the hydraulic oil is unloaded through the logic valve 4.3, and the system energy consumption is small. When the impeller rotating motor 6 rotates forwards, the variable plunger pump 2 electric proportional valve is electrified, the electromagnet Y1 of the electromagnetic valve 4.1 in the impeller rotating control valve group 4 is electrified, the electromagnet Y2 of the electro-hydraulic reversing valve 4.6 is electrified, hydraulic oil enters the oil inlet P port of the electro-hydraulic reversing valve 4.6 through the oil inlet P port of the impeller rotating control valve group 4, the impeller rotating motor 6 rotates forwards through the left position of the electro-hydraulic reversing valve 4.6 and the oil outlet A port of the impeller rotating control valve group 4, and return oil flows back to the hydraulic oil tank 1 through the port B and the oil return port T. The impeller rotating motor 6 is similar in reverse rotation, an electromagnet Y3 of the electro-hydraulic reversing valve 4.6 is electrified, hydraulic oil enters an oil inlet P port of the electro-hydraulic reversing valve 4.6 through an oil inlet P port of the impeller rotating control valve group 4, the impeller rotating motor 6 is reversed through the right position of the electro-hydraulic reversing valve 4.6 and an oil outlet B port of the impeller rotating control valve group 4, and return oil flows back to the hydraulic oil tank 1 through an A port and an oil return port T.
When the pressure of the hydraulic system is too high and exceeds the maximum pressure of the overflow valve 4.2 and the preset pressure of the spring at the spring side of the logic valve 4.3, the hydraulic system overflows at a large flow rate through the logic valve 4.3, so that the hydraulic system is protected.
When the system is normally shut down, the current for the variable plunger pump 2 electric proportional valve is gradually reduced, the displacement of the variable plunger pump 2 is gradually changed to be minimum, the speed of the impeller rotating motor 6 is reduced to be minimum, the electromagnet Y1 of the electromagnetic valve 4.1 in the impeller rotating control valve group 4 is powered off, the electromagnet Y2 of the electro-hydraulic reversing valve 4.6 is powered off, the rotating inertia of the impeller rotating motor 6 is minimum, and the inertia impact on the hydraulic system is negligible.
When the system is suddenly power-off or signals are lost due to faults, the electro-hydraulic reversing valve 4.6 returns to the middle position, an A, B port of the impeller rotating motor 6 is connected with the hydraulic oil tank, the pump valve cannot be damaged due to impact pressure, the oil supplementing one-way valve 4.5 can suck oil from the hydraulic oil tank 1 through an oil return port T to prevent the A end of the impeller rotating motor 6 from being instantaneously sucked to be empty, and the system is protected. The impeller rotating motor 6 is similarly reversely rotated.
The electro-hydraulic directional control valve 4.6 is an electro-hydraulic directional control valve, a system is required to provide control oil, the oil can be directly provided by an oil inlet P port of the impeller rotation control valve group 4, but the pressure of the oil inlet P port of the impeller rotation control valve group 4 is lower when the impeller rotation motor 6 rotates at a low speed in a no-load mode, the pressure is lower than the lowest directional control pressure of the electro-hydraulic directional control valve 4.6, impact and fluctuation exist during directional control, and reasonable and stable external control pressure oil is provided for the impeller rotation control valve group 4 through an oil source port LS port by the external control oil source valve 7.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (9)
1. A sand-throwing fire-fighting train impeller rotation control valve group is characterized by comprising an electromagnetic valve, an overflow valve, a first logic valve and an electro-hydraulic reversing valve;
the electro-hydraulic reversing valve is connected with an oil inlet of the first logic valve, and a control end on the spring side of the first logic valve is connected with an overflow valve and an electromagnetic valve simultaneously; the oil outlet of the electro-hydraulic reversing valve returns to a hydraulic oil tank after passing through an impeller rotating motor;
when the electromagnetic valve is in power failure, the spring side control end of the first logic valve is communicated to the hydraulic oil tank, and the first logic valve is used for unloading;
when the electromagnetic valve is electrified, the maximum pressure of the spring side control end of the first logic valve is the set pressure of the overflow valve, and the first logic valve is used for overflow; the electro-hydraulic reversing valve is in a first conduction position or a second conduction position for oil discharge according to the power-on state of any electromagnet, so that the oil inlet of the oil inlet is output from the first conduction position or the second conduction position to enable the impeller rotating motor to rotate forwards or reversely.
2. The valve set of claim 1, wherein when the solenoid valve is energized, the opening pressure of the first logic valve is the maximum pressure of the relief valve plus a spring preset pressure on the spring side of the first logic valve.
3. The valve set for controlling the rotation of an impeller of a sand-throwing fire extinguishing vehicle according to claim 1, wherein an oil-supplying check valve for supplying oil from the hydraulic oil tank to the impeller rotating motor is provided at each of both ends of the impeller rotating motor.
4. The valve assembly of claim 1, further comprising an external control oil source valve for providing external control pressure oil to the valve assembly.
5. The sand-throwing fire extinguishing train impeller rotation control valve group as recited in claim 4, wherein the external control oil source valve comprises a filter valve, an overflow valve, a second logic valve and a damping hole;
the inlet oil is respectively connected with an overflow valve, a second logic valve and an oil source outlet for outputting external control pressure oil through the filter valve, the outlet of the overflow valve is communicated to a hydraulic oil tank, and the spring side of the second logic valve is communicated to the hydraulic oil tank through a damping hole.
6. A hydraulic system is characterized by comprising a sand-throwing and fire-extinguishing train impeller rotation control valve group, a variable plunger pump, a quantitative gear pump and an external control oil source valve;
the variable plunger pump sucks oil in a hydraulic oil tank to the sand-throwing fire extinguishing vehicle impeller rotation control valve group, and the sand-throwing fire extinguishing vehicle impeller rotation control valve group supplies oil to the impeller rotation motor to enable the impeller rotation motor to rotate forwards or reversely;
the quantitative gear pump sucks oil of a hydraulic oil tank to an external oil control source valve, and the external oil control source valve provides external control pressure oil for the sand-throwing extinguishing train impeller rotation control valve group through an oil source outlet;
the sand-throwing fire-fighting train impeller rotation control valve group comprises an electromagnetic valve, an overflow valve, a first logic valve and an electro-hydraulic reversing valve;
the electro-hydraulic reversing valve is connected with an oil inlet of the first logic valve, and a control end on the spring side of the first logic valve is connected with an overflow valve and an electromagnetic valve simultaneously; the oil outlet of the electro-hydraulic reversing valve returns to a hydraulic oil tank after passing through an impeller rotating motor;
when the electromagnetic valve is in power failure, the spring side control end of the first logic valve is communicated to the hydraulic oil tank, and the first logic valve is used for unloading;
when the electromagnetic valve is electrified, the maximum pressure of the spring side control end of the first logic valve is the set pressure of the overflow valve, and the first logic valve is used for overflow; the electro-hydraulic reversing valve is in a first conduction position or a second conduction position for oil discharge according to the power-on state of any electromagnet, so that the oil inlet of the oil inlet is output from the first conduction position or the second conduction position to enable the impeller rotating motor to rotate forwards or reversely.
7. The hydraulic system as claimed in claim 6, wherein the controller controls the impeller rotation control valve set of the sand-blasting vehicle to supply oil to the impeller rotation motor according to the pressure of the sand-blasting vehicle's blasting system collected by the pressure sensor.
8. The hydraulic system of claim 7, wherein the pressure sensor is mounted on a sandbreak train impeller rotation control valve pack.
9. The hydraulic system as claimed in claim 6, wherein the variable displacement piston pump and the fixed displacement gear pump are connected to the engine via a power take-off or transfer case, and draw oil from a hydraulic oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020285438.XU CN212717431U (en) | 2020-03-10 | 2020-03-10 | Sand-throwing fire-fighting train impeller rotation control valve group and hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020285438.XU CN212717431U (en) | 2020-03-10 | 2020-03-10 | Sand-throwing fire-fighting train impeller rotation control valve group and hydraulic system |
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| Publication Number | Publication Date |
|---|---|
| CN212717431U true CN212717431U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020285438.XU Active CN212717431U (en) | 2020-03-10 | 2020-03-10 | Sand-throwing fire-fighting train impeller rotation control valve group and hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212717431U (en) |
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2020
- 2020-03-10 CN CN202020285438.XU patent/CN212717431U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220720 Address after: No.26 tuolanshan Road, Xuzhou Economic and Technological Development Zone, Xuzhou City, Jiangsu Province Patentee after: Jiangsu Xugong Construction Machinery Research Institute Co.,Ltd. Address before: No.26 tuolanshan Road, Xuzhou Economic and Technological Development Zone, Xuzhou City, Jiangsu Province Patentee before: XCMG CONSTRUCTION MACHINERY Co.,Ltd. |
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| TR01 | Transfer of patent right |