CN219654994U - Grouting machine hydraulic system capable of automatically controlling grouting speed and pressure - Google Patents
Grouting machine hydraulic system capable of automatically controlling grouting speed and pressure Download PDFInfo
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- CN219654994U CN219654994U CN202320639428.5U CN202320639428U CN219654994U CN 219654994 U CN219654994 U CN 219654994U CN 202320639428 U CN202320639428 U CN 202320639428U CN 219654994 U CN219654994 U CN 219654994U
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- 239000003921 oil Substances 0.000 claims abstract description 101
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 9
- 238000006073 displacement reaction Methods 0.000 claims 2
- 238000010276 construction Methods 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model discloses a grouting machine hydraulic system with automatic grouting speed and pressure control, which comprises: the hydraulic oil tank, the display controller, the load sensitive variable pump, load sensitive control valves, a plurality of hydraulic pumps and a plurality of electric proportion pressure limiting valves, wherein the oil outlet of the hydraulic oil tank is connected with the oil inlet of the load sensitive variable pump through a hydraulic pipeline, the control oil port of the load sensitive variable pump is connected with the Ls port of the load sensitive control valve set through a hydraulic pipeline, the A oil port and the B oil port of the load sensitive control valve set are respectively connected with a corresponding hydraulic cylinder through a hydraulic pipeline, the pressure oil port of the load sensitive control valve set is respectively connected with the oil inlet of a corresponding electric proportion pressure limiting valve through a hydraulic pipeline, the oil outlet of each electric proportion pressure limiting valve is connected with the oil return port of the hydraulic oil tank through a hydraulic pipeline, and the display controller is in communication connection with the load sensitive control valve set and each electric proportion pressure limiting valve.
Description
Technical Field
The utility model relates to the technical field of engineering machinery, in particular to a control system of a grouting pump.
Background
Along with the development of the construction of tunnels, roads, bridges, dams, mines and buildings in China, various grouting construction projects such as grouting and water shutoff, void filling, rock stratum reinforcement, foundation treatment and the like are required to be carried out on construction sites, so that grouting machines are frequently and largely used.
At present, the existing grouting construction site uses grouting machines mainly comprising single pump heads for grouting, the machines with double pump heads and multiple pump heads for grouting simultaneously are relatively rare, the speed and the pressure are basically manually adjusted in control, the grouting automation degree is low, and the requirement of the construction site on automatic speed and pressure adjustment cannot be met.
Therefore, the grouting machine hydraulic system which has high automation degree and can automatically control the grouting speed and the grouting pressure of the automatic stepless speed regulating grouting pump becomes the problem which needs to be solved in the industry.
Disclosure of Invention
Aiming at the defects of the prior art, one of the purposes of the utility model is to provide a grouting machine hydraulic system with automatic control of grouting speed and pressure, which realizes the grouting flow and pressure effects of a grouting pump of an automatic stepless speed regulation multi-pump head grouting machine.
The utility model provides a grouting machine hydraulic system with automatic grouting speed and pressure control, which comprises: the hydraulic oil tank, the display controller, the load sensitive variable pump, load sensitive control valves, a plurality of pneumatic cylinders and a plurality of electric proportion pressure limiting valves, wherein, the oil-out of hydraulic oil tank is connected with the oil inlet of load sensitive variable pump through the hydraulic line, load sensitive variable pump is connected with load sensitive control valves through the hydraulic line, the A hydraulic fluid port and the B hydraulic fluid port of load sensitive control valves are connected with a corresponding pneumatic cylinder through the hydraulic line respectively, the pressure oil port of load sensitive control valves is connected with the oil inlet of a corresponding electric proportion pressure limiting valve through the hydraulic line respectively, the oil-out of each electric proportion pressure limiting valve is connected with the oil return port of hydraulic oil tank through the hydraulic line, the display controller is connected with load sensitive control valves and each electric proportion pressure limiting valve in communication.
Optionally, the load sensitive control valve group comprises a control head block and a plurality of load sensitive control valve plates respectively connected with the control head block, the plurality of load sensitive control valve plates are connected in parallel, an X port of the load sensitive variable pump is connected with an Ls port of the control head block through a hydraulic pipeline, a Pp port of the load sensitive variable pump is connected with a Pv port of the control head block through a hydraulic pipeline, an A oil port and a B oil port of each load sensitive control valve plate are respectively connected with a corresponding hydraulic cylinder through a hydraulic pipeline, and a pressure oil port of each load sensitive control valve plate is respectively connected with an oil inlet of a corresponding electric proportional pressure limiting valve through a hydraulic pipeline.
In the utility model, optionally, the load-sensitive control valve group is formed by connecting a control head block and a plurality of load-sensitive control valve plates through bolts, and a common oil way is arranged in the load-sensitive control valve group.
In the utility model, optionally, the control head block limits the highest pressure of the load-sensitive control valve group, the pressure set value of each load-sensitive control valve plate is lower than the pressure set value of the control valve, and the control head block receives the pressure from each load-sensitive control valve plate and feeds back the pressure to the load-sensitive variable pump through the Ls port, and establishes a load feedback loop with the load-sensitive variable pump to realize automatic control of pressure flow.
In the utility model, optionally, the control head block receives the pressure of the hydraulic oil from each load-sensitive control valve plate, and after comparison, feeds back the maximum pressure to the load-sensitive variable pump.
Optionally, the hydraulic oil tank further comprises an electric proportional overflow valve, an oil inlet of the electric proportional overflow valve is connected with a Pp port of the load sensitive variable pump through a hydraulic pipeline, an oil outlet of the electric proportional overflow valve is connected with an oil return port of the hydraulic oil tank through a hydraulic pipeline, and the electric proportional overflow valve is in communication connection with the display controller. In the present utility model, an electro-proportional relief valve is used to control the maximum pressure of the system.
Optionally, an oil suction filter is arranged at an oil outlet of the hydraulic oil tank, an oil inlet of the oil suction filter is connected with the oil outlet of the hydraulic oil tank through a hydraulic pipeline, and the oil outlet of the oil suction filter is connected with an oil inlet of the load-sensitive variable pump through a hydraulic pipeline. In the utility model, the oil absorption filter is used for filtering impurities in the hydraulic oil and preventing pollutant particles from entering the system.
Optionally, an oil return filter is arranged at an oil return port of the hydraulic oil tank, an oil inlet of the oil return filter is connected with an oil outlet of the electric proportional overflow valve and an oil outlet of each electric proportional pressure limiting valve through a hydraulic pipeline, and an oil outlet of the oil return filter is connected with an oil return port of the hydraulic oil tank through a hydraulic pipeline. In the present utility model, the oil return filter is used to filter impurities in the oil returned to the oil tank.
Optionally, a pressure relay is arranged on a hydraulic pipeline of each load sensitive control valve plate of the load sensitive control valve group and the corresponding electric proportional pressure limiting valve, and each pressure relay is in communication connection with the display controller. In the utility model, each pressure relay is used for detecting the pressure of the corresponding hydraulic pipeline and sending an electric signal to the display controller, and each pressure relay is not interfered with each other when detecting the pressure.
Optionally, a total pressure relay is further arranged, the total pressure relay is connected with the load sensitive control valve group through a hydraulic pipeline, and the total pressure relay is in communication connection with the display controller. In the utility model, the total pressure relay acquires the maximum pressure value of each load-sensitive control valve plate and dynamically displays the maximum pressure value on the display controller.
The utility model achieves at least the following advantages: the hydraulic system is a load sensitive variable control system, closed-loop control of the hydraulic system is established through the hydraulic load sensitive element, and corresponding electromagnetic proportional valves are controlled by inputting different current values through the operation display controller, so that automatic stepless speed regulation of the flow and the pressure of the grouting pump is realized.
Drawings
Fig. 1 shows a schematic structure of a hydraulic system of a grouting machine for automatically controlling grouting speed and pressure according to the present utility model.
Detailed Description
The hydraulic system of the grouting machine for automatically controlling grouting speed and pressure according to the present utility model will be described in detail with reference to the accompanying drawings.
As a non-limiting embodiment, the grouting speed and pressure automatic control grouting machine hydraulic system of the present utility model is shown in fig. 1, and comprises: the hydraulic oil tank comprises a display controller (not shown in the figure), an oil absorption filter 1, a load sensitive variable pump 2, an electric proportional overflow valve 3, a load sensitive control valve group 4, a hydraulic cylinder 5.1, a hydraulic cylinder 5.2, a hydraulic cylinder 5.3, a pressure relay 6.1, a pressure relay 6.2, a pressure relay 6.3, an electric proportional pressure limiting valve 7.1, an electric proportional pressure limiting valve 7.2, an electric proportional pressure limiting valve 7.3, an oil return filter 8 and a hydraulic oil tank 9.
The load-sensitive control valve block 4 comprises a control head block 4-0, a load-sensitive control valve block 4-1, a load-sensitive control valve block 4-2 and a load-sensitive control valve block 4-3. The control head block 4-0 is communicated with each load sensitive control valve plate through an internal pore canal, the control head block 4-0 is connected with each load sensitive control valve plate through bolts, and the control head block 4-0 and each load sensitive control valve plate are in parallel relation and can work independently or simultaneously.
The control head block 4-0 has the function of limiting the highest working pressure of the load sensitive control valve block 4, the pressure set values of the load sensitive control valve block 4-1, the load sensitive control valve block 4-2 and the load sensitive control valve block 4-3 are lower than the pressure set value of the control head block 4-0, and after the control head block 4-0 receives the pressures from the load sensitive control valve block 4-1, the load sensitive control valve block 4-2 and the load sensitive control valve block 4-3, the maximum pressure is fed back to the load sensitive variable pump 2 through comparison, namely, the maximum pressure is connected with an X port of the load sensitive variable pump 2 through an LS port. In this non-limiting embodiment, the X port of the load-sensitive variable pump 2 is connected to the Ls port of the control head block 4-0 of the load-sensitive control valve group 4, and the Pp port of the load-sensitive variable pump 2 is connected to the Pv port of the control head block 4-0.
Therefore, the oil suction filter 1 sucks hydraulic oil from the hydraulic oil tank 9 to the oil inlet of the load-sensitive variable pump 2, and the oil outlet of the load-sensitive variable pump 2, namely a Pp port, is connected with the oil inlet of the electric proportional overflow valve 3 and the Pv port of the load-sensitive control valve group 4 through a hydraulic pipeline; the load-sensitive control valve block 4-1, the load-sensitive control valve block 4-2 and the oil port A and the oil port B of the load-sensitive control valve block 4-3 are respectively and correspondingly connected with the hydraulic cylinder 5.1, the hydraulic cylinder 5.2 and the oil port of the hydraulic cylinder 5.3 in sequence, the pressure oil port M1 of the load-sensitive control valve block 4-1, the pressure oil port M2 of the load-sensitive control valve block 4-2 and the pressure oil port M3 of the load-sensitive control valve block 4-3 are respectively and correspondingly connected with the oil inlet of the pressure relay 6.1, the oil inlet of the pressure relay 6.2, the oil inlet of the pressure relay 6.3, the oil inlet of the electric proportional pressure limiting valve 7.1, the oil inlet of the electric proportional pressure limiting valve 7.2 and the oil inlet of the electric proportional pressure limiting valve 7.3, the electric proportional pressure limiting valve 7.1, the electric proportional pressure limiting valve 7.2 and the oil outlet of the electric proportional pressure limiting valve 7.3 are respectively and correspondingly connected with the oil inlet of the oil return filter 8, and the oil tank 9 of the oil return filter 8.
When the pressure of the three grouting holes is required to be P1, P2 and P3, and the flow is Q1, Q2 and Q3, specific parameters can be input through a display controller, the current values of different load sensitive control valve plates 4-1, 4-2 and 4-3 of the load sensitive control valve plates in the control loop are changed, the opening size of each electromagnetic valve is changed, an Ls port on a control head block 4-0 of the load sensitive control valve group 4 is connected with an X port of the load sensitive variable pump 2 through a hydraulic pipeline, and a load feedback system is formed, so that the automatic adjustment of the pressure and flow of the three grouting ports is realized.
The grouting speed and pressure are different values required in different construction environments, which are determined by the geological environment of grouting and the specific construction process. The hydraulic system is closed-loop control, different values are input to the electric proportional pressure limiting valve 7.1, the electric proportional pressure limiting valve 7.2, the electric proportional pressure limiting valve 7.3, the load sensitive control valve plate 4-1, the load sensitive control valve plate 4-2 and the load sensitive control valve plate 4-3 on the display controller, so that a feedback loop can be established between the load sensitive control valve group 4 and the load sensitive variable pump 2, and the hydraulic cylinder 5.1, the hydraulic cylinder 5.2 and the hydraulic cylinder 5.3 provide reciprocating linear motion in the hydraulic system to push the grouting cylinder to reciprocate so as to realize slurry suction and discharge; when the flow and pressure of grouting are Q1 and P1 respectively, a current value is input to the electromagnet of the load sensitive control valve plate 4-1 at the terminal of the display controller, and the opening size of the electromagnet is controlled, so that the output flow is determined, and the continuous adjustment of the speed of the oil cylinder can be realized. Meanwhile, a current value is input into the power supply proportion pressure limiting valve 7.1, a pressure value is correspondingly obtained, the output pressure of the hydraulic cylinder 5.1 is limited by the value, an Ls port on a control head block 4.0 of the load sensitive control valve group 4 is connected with an X port (namely a control oil port) of the load sensitive variable pump 2 through a hydraulic pipeline to form a load sensitive loop, the load sensitive loop timely transmits the pressure of a load end to the control oil port of the load sensitive variable pump 2, the dynamic pressure of the load end is fed back to the control oil port X port at all times, the load sensitive variable pump 2 can obtain a dynamic pressure value, the pressure acts on a variable mechanism of the load sensitive variable pump 2, and therefore flow is changed, automatic matching of flow pressure is obtained, and the hydraulic cylinder 5.1 can obtain corresponding P1 and Q1 values.
As yet another non-limiting embodiment, as shown in fig. 1, the device further includes a total pressure relay 6.4, where the total pressure relay 6.4 captures the maximum pressure value among the load-sensitive control valve sheet 4-1, the load-sensitive control valve sheet 4-2, and the load-sensitive control valve sheet 4-3, so as to dynamically display on the display controller.
Although preferred embodiments of the present utility model have been described in detail herein, it is to be understood that the utility model is not limited to the precise construction and steps set forth herein, and that other modifications and variations may be effected by one skilled in the art without departing from the spirit and scope of the utility model.
Claims (8)
1. A grouting machine hydraulic system with automatic grouting speed and pressure control, comprising: hydraulic oil tank, its characterized in that still includes: the hydraulic oil tank comprises a display controller, a load sensitive variable pump, a load sensitive control valve bank, a plurality of hydraulic cylinders and a plurality of electric proportion pressure limiting valves, wherein an oil outlet of a hydraulic oil tank is connected with an oil inlet of the load sensitive variable pump through a hydraulic pipeline, the load sensitive variable pump is connected with the load sensitive control valve bank through a hydraulic pipeline, an oil port A and an oil port B of the load sensitive control valve bank are respectively connected with a corresponding hydraulic cylinder through a hydraulic pipeline, a pressure oil port of the load sensitive control valve bank is respectively connected with an oil inlet of the corresponding electric proportion pressure limiting valve through a hydraulic pipeline, an oil outlet of each electric proportion pressure limiting valve is connected with an oil return port of the hydraulic oil tank through a hydraulic pipeline, and the display controller is in communication connection with the load sensitive control valve bank and each electric proportion pressure limiting valve.
2. The grouting machine hydraulic system of automatic control of grouting speed and pressure according to claim 1, wherein the load sensitive control valve group comprises a control head block and a plurality of load sensitive control valve plates respectively connected with the control head block, the load sensitive control valve plates are connected in parallel, an X port of the load sensitive variable pump is connected with an Ls port of the control head block through a hydraulic pipeline, a Pp port of the load sensitive variable pump is connected with a Pv port of the control head block through a hydraulic pipeline, an A oil port and a B oil port of each load sensitive control valve plate are respectively connected with a corresponding hydraulic cylinder through a hydraulic pipeline, and a pressure oil port of each load sensitive control valve plate is respectively connected with an oil inlet of a corresponding electric proportional pressure limiting valve through a hydraulic pipeline.
3. The grouting speed and pressure automatic control grouting machine hydraulic system according to claim 2, further comprising an electric proportional overflow valve, wherein an oil inlet of the electric proportional overflow valve is connected with a Pp port of the load sensitive variable pump through a hydraulic pipeline, an oil outlet of the electric proportional overflow valve is connected with an oil return port of the hydraulic oil tank through a hydraulic pipeline, and the electric proportional overflow valve is in communication connection with the display controller.
4. The grouting speed and pressure automatic control grouting machine hydraulic system according to claim 3, wherein an oil suction filter is arranged at an oil outlet of the hydraulic oil tank, an oil inlet of the oil suction filter is connected with the oil outlet of the hydraulic oil tank through a hydraulic pipeline, and the oil outlet of the oil suction filter is connected with an oil inlet of the load-sensitive variable pump through a hydraulic pipeline.
5. The grouting speed and pressure automatic control grouting machine hydraulic system according to claim 4, wherein an oil return filter is arranged at an oil return port of the hydraulic oil tank, an oil inlet of the oil return filter is connected with an oil outlet of the electric proportional overflow valve and an oil outlet of each electric proportional pressure limiting valve through a hydraulic pipeline, and an oil outlet of the oil return filter is connected with an oil return port of the hydraulic oil tank through a hydraulic pipeline.
6. The grouting speed and pressure automatic control grouting machine hydraulic system according to claim 4, wherein each load sensitive control valve sheet of the load sensitive control valve group and the hydraulic pipeline of the corresponding electric proportional pressure limiting valve are provided with pressure relays, and each pressure relay is in communication connection with the display controller.
7. The grouting speed and pressure automatic control grouting machine hydraulic system according to claim 6, further comprising a total pressure relay, wherein the total pressure relay is connected with the load sensitive control valve group through a hydraulic pipeline, and the total pressure relay is in communication connection with the display controller.
8. The grouting machine hydraulic system with automatic control of grouting speed and pressure according to any one of claims 1 to 7, wherein the load-sensitive variable displacement pump is set as a load-sensitive variable displacement pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320639428.5U CN219654994U (en) | 2023-03-28 | 2023-03-28 | Grouting machine hydraulic system capable of automatically controlling grouting speed and pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320639428.5U CN219654994U (en) | 2023-03-28 | 2023-03-28 | Grouting machine hydraulic system capable of automatically controlling grouting speed and pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219654994U true CN219654994U (en) | 2023-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320639428.5U Active CN219654994U (en) | 2023-03-28 | 2023-03-28 | Grouting machine hydraulic system capable of automatically controlling grouting speed and pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219654994U (en) |
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2023
- 2023-03-28 CN CN202320639428.5U patent/CN219654994U/en active Active
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