CN212717418U - Crusher load sensitive control hydraulic system - Google Patents
Crusher load sensitive control hydraulic system Download PDFInfo
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- CN212717418U CN212717418U CN202021468728.4U CN202021468728U CN212717418U CN 212717418 U CN212717418 U CN 212717418U CN 202021468728 U CN202021468728 U CN 202021468728U CN 212717418 U CN212717418 U CN 212717418U
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Abstract
The utility model discloses a sensitive control hydraulic system of breaker load, include: the hydraulic control system comprises a hydraulic oil tank, an engine, a plunger pump, a first overflow valve, an electromagnetic unloading valve, a reversing control valve group, an energy accumulator and a motor, wherein the plunger pump is provided with an oil suction port and an oil outlet, the reversing control valve group is provided with a control valve first oil inlet P1, a control valve second oil inlet P2, a control valve first oil outlet A and a control valve second oil outlet B, and the reversing control valve group further comprises a control valve T oil port, a control valve X oil port and a control valve L oil port. In this way, the utility model provides a sensitive control hydraulic system of breaker load controls the discharge capacity of plunger pump through the case aperture of tribit cross valve among load pressure feedback and the control valve, makes the breaker normally work, and the pilot control valve of tribit cross valve is electric proportional control, can make the steady opening of breaker motor and stop.
Description
Technical Field
The utility model relates to a mine crushing equipment technical field especially relates to a sensitive control hydraulic system of breaker load.
Background
In order to adapt to different environmental conditions, the crawler-type crusher is divided into an electric motor drive and a hydraulic motor drive. In reality, some broken sites of mines do not have high-voltage power supplies, and the motor drive cannot be used. In view of this, a problem to be solved by those skilled in the art is how to design a crusher driving device that is not constrained by power.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the main technical problem who solves how to provide a case aperture through tribit cross valve in load pressure feedback and the control valve controls the discharge capacity of plunger pump, makes the breaker normally work, and the pilot control valve of tribit cross valve is electric proportional control, can make the breaker motor steady open with the sensitive control hydraulic system of breaker load that stops.
In order to solve the technical problem, the utility model discloses a technical scheme be: there is provided a crusher load sensitive control hydraulic system comprising: the hydraulic control system comprises a hydraulic oil tank, an engine, a plunger pump, a first overflow valve, an electromagnetic unloading valve, a reversing control valve group, an energy accumulator and a motor. The plunger pump is provided with an oil suction port and an oil outlet, and the reversing control valve group is provided with a control valve first oil inlet P1, a control valve second oil inlet P2, a control valve first oil outlet A and a control valve second oil outlet B.
The reversing control valve group further comprises a control valve T oil port, a control valve X oil port and a control valve L oil port, the oil outlet of the plunger pump is respectively connected with a first control valve oil inlet P1 and a second control valve oil inlet P2, a second control valve oil outlet B and a first control valve oil outlet A are respectively connected with the motor, and the crusher load sensitive control hydraulic system further comprises a first oil port G1 and a second oil port G2.
In a preferred embodiment, the crusher load-sensitive control hydraulic system further comprises a pressure reducing valve, the pressure reducing valve is in control connection with the accumulator, and hydraulic oil enters the accumulator through the first oil port G1 after opening the pressure reducing valve.
In a preferred embodiment, the crusher load-sensitive control hydraulic system further comprises a check valve, the check valve is in control connection with the accumulator, and the accumulator releases pressure through the check valve.
In a preferred embodiment, the crusher load-sensitive control hydraulic system further comprises a shuttle valve, the motor is connected with the shuttle valve, high-pressure hydraulic oil on the oil inlet side of the motor feeds a pressure signal back to the plunger pump through the shuttle valve, and when the plunger pump continuously operates in a large-displacement no-load state, the hydraulic oil enters the low-pressure oil side of the motor through the one-way valve.
In a preferred embodiment, the crusher load-sensitive control hydraulic system further comprises a high-pressure filter, and an oil outlet of the high-pressure filter is connected with the control valve X oil port.
In a preferred embodiment, the crusher load-sensitive control hydraulic system further comprises a gear pump, wherein an oil suction port of the gear pump is connected with a hydraulic oil tank through a hydraulic rubber hose, and an outlet of the gear pump is connected with an inlet of the high-pressure filter.
In a preferred embodiment, the crusher load-sensitive control hydraulic system further comprises an overflow valve, wherein an outlet of the gear pump is connected with an inlet of the overflow valve, and an oil return port of the overflow valve is connected with an oil return of the hydraulic oil tank.
In a preferred embodiment, the hydraulic system for load-sensitive control of a crusher further comprises an overload protection valve, the overload protection valve is connected with the motor, and high-pressure hydraulic oil at the oil outlet of the motor enters the low-pressure oil port of the motor through the overload protection valve.
The utility model has the advantages that: the displacement of the plunger pump is controlled through load pressure feedback and the valve core opening of a three-position four-way valve in the control valve, so that the crusher works normally, and the pilot control valve of the three-position four-way valve is controlled in an electric proportion mode, so that the motor of the crusher can be started and stopped stably.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work, wherein:
fig. 1 is a schematic structural diagram of a specific embodiment of the load-sensitive control hydraulic system of the crusher of the present invention.
The reference numbers in the drawings are as follows: 1. a hydraulic oil tank; 2. an engine; 3. a plunger pump; 4. a first overflow valve; 5. an electromagnetic unloading valve; 6. a reversing control valve group; 7. a pressure reducing valve; 8. a one-way valve; 9. an accumulator; 10. a motor; 11. an overload protection valve bank; 12. a shuttle valve; 13. a second overflow valve; 14. a high pressure filter; 15. a gear pump.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1, in an embodiment of the present invention, a hydraulic system for controlling a crusher in a load sensing manner is provided, the hydraulic system for controlling a crusher in a load sensing manner includes: the hydraulic control system comprises a hydraulic oil tank 1, an engine 2, a plunger pump 3, a first overflow valve 4, an electromagnetic unloading valve 5, a reversing control valve group 6, an energy accumulator 9 and a motor 10. The plunger pump 3 is provided with an oil suction port and an oil outlet, and the reversing control valve group 6 is provided with a control valve first oil inlet P1, a control valve second oil inlet P2, a control valve first oil outlet A and a control valve second oil outlet B.
The reversing control valve group 6 further comprises a control valve T oil port, a control valve X oil port and a control valve L oil port, the oil outlet of the plunger pump 3 is respectively connected with a first control valve oil inlet P1 and a second control valve oil inlet P2, a second control valve oil outlet B and a first control valve oil outlet A are respectively connected with the motor 10, and the crusher load-sensitive control hydraulic system further comprises a first oil port G1 and a second oil port G2.
The crusher load-sensitive control hydraulic system further comprises a pressure reducing valve 7, the pressure reducing valve 7 is in control connection with the energy accumulator 9, and hydraulic oil enters the energy accumulator 9 through a first oil port G1 after the pressure reducing valve 7 is opened.
The crusher load sensitive control hydraulic system further comprises a one-way valve 8, the one-way valve 8 is in control connection with the energy accumulator 9, and the energy accumulator 9 releases pressure through the one-way valve 8.
The crusher load-sensitive control hydraulic system further comprises a shuttle valve 12, the motor 10 is connected with the shuttle valve 12, high-pressure hydraulic oil on the oil inlet side of the motor 10 feeds back a pressure signal to the plunger pump 3 through the shuttle valve 12, and when the plunger pump 3 continuously runs in a large-displacement no-load state, the hydraulic oil enters the low-pressure oil side of the motor 10 through the check valve 8.
The crusher load-sensitive control hydraulic system further comprises a high-pressure filter 14, and an oil outlet of the high-pressure filter 14 is connected with an oil port X of the control valve.
The crusher load sensitive control hydraulic system further comprises a gear pump 15, an oil suction port of the gear pump 15 is connected with the hydraulic oil tank 1 through a hydraulic rubber pipe, and an outlet of the gear pump 15 is connected with an inlet of the high-pressure filter 14.
The crusher load sensitive control hydraulic system further comprises an overflow valve 13, an outlet of the gear pump 15 is connected with an inlet of the overflow valve 13, and an oil return port of the overflow valve 13 is connected with oil return of the hydraulic oil tank 1.
The crusher load-sensitive control hydraulic system further comprises an overload protection valve 11, the overload protection valve 11 is connected with the motor 10, and high-pressure hydraulic oil at an oil outlet of the motor 10 enters a low-pressure oil port of the motor 10 through the overload protection valve 11.
In another embodiment, the utility model discloses a sensitive control hydraulic system of breaker load includes hydraulic tank 1, engine 2, the sensitive integrated pressure of load cuts off plunger pump 3, first overflow valve 4, electromagnetism off-load valve 5, switching-over control valves 6, relief pressure valve 7, check valve 8, energy storage ware 9, breaker motor 10, overload protection valves 11, shuttle valve 12, second overflow valve 13, high pressure filter 14 and gear pump 15.
An oil suction port of the load-sensitive integrated pressure cut-off plunger pump 3 is connected with an oil outlet of the hydraulic oil tank 1 through a rubber tube, an outlet of the load-sensitive integrated pressure cut-off plunger pump 3 is connected with oil inlets P1 and P2 of a reversing control valve group 6, a part of hydraulic oil of the oil outlet controlled by the reversing control valve is connected with an energy accumulator 9, an outlet A, B of the reversing control valve group 6 is respectively connected with an oil inlet of a crusher motor 10, and the oil returned by the crusher motor 10 is connected with an oil return port of the hydraulic oil tank 1 through a T port of the reversing control valve group. The high-pressure hydraulic oil on the oil inlet side of the crusher motor feeds a pressure signal back to the discharge control module of the load-sensitive integrated pressure cut-off plunger pump 3 through the shuttle valve 12.
An oil suction port of the gear pump 15 is connected with the hydraulic oil tank 1 through a hydraulic rubber tube, an outlet of the gear pump 15 is connected with an inlet path of the high-pressure filter 14, an oil outlet of the high-pressure filter 14 is connected with an X oil port of the reversing control valve group 6, an L oil port of the reversing control valve group 6 is connected with an oil return port of the hydraulic oil tank 1 through an oil return hydraulic rubber tube, an outlet of the gear pump 15 is connected with an inlet of the overflow valve 13, and an oil return port of the overflow valve 13 is connected with oil return of the hydraulic.
The working principle of the utility model is as follows:
after the engine is started, hydraulic oil in the hydraulic oil tank 1 respectively enters the load-sensitive integrated pressure cut-off plunger pump 3 and the gear pump 15 through pipelines, the unloading valve 5 in the reversing control valve group 6 is not powered, the hydraulic system of the load-sensitive integrated pressure cut-off plunger pump 3 is in an unloading state, pressure oil at the shuttle valve 12 has no pressure, namely no pressure signal is fed back to a displacement control module of the load-sensitive integrated pressure cut-off plunger pump 3, the load-sensitive integrated pressure cut-off plunger pump 3 is at the maximum displacement, and the hydraulic system of the gear pump 15 returns oil to the hydraulic oil tank 1 through the second overflow valve 13.
When a worker starts the crusher through a remote controller, one side of the electromagnetic valve 5 and one side of the pilot electromagnetic valve 6 are powered on, high-pressure hydraulic oil at the outlet of the load-sensitive integrated pressure cut-off plunger pump 3 enters an opening A of the crusher motor through the reversing control valve 6, meanwhile, a part of hydraulic oil opens the pressure reducing valve 7 and enters the energy accumulator 9 through an oil port G1, after the hydraulic oil in the energy accumulator reaches the limit, the energy accumulator stops feeding oil, the high-pressure oil at the oil inlet side of the crusher motor passes through the shuttle valve, a load pressure signal is fed back to the load-sensitive integrated pressure cut-off plunger pump 3, the displacement of the plunger pump is controlled according to the opening degree of a valve core of the reversing control valve, and oil returned from an opening B of the crusher motor returns to.
When the crusher motor needs to stop working, a worker stops the button through the remote controller, the electromagnetic valve 5 and the pilot electromagnetic valve 6 are powered off, and the valve core of the control valve group returns to the middle position. At the moment, the energy accumulator 9 releases pressure through the one-way valve 8, meanwhile, the second one-way valve is opened to provide pressure oil for the inertial rotation of the crusher, and high-pressure hydraulic oil at the oil outlet of the crusher motor enters the low-pressure oil port of the motor through the overload protection valve 11. The high pressure oil on one side of the crusher motor feeds back a pressure signal to a control module of the load-sensitive integrated pressure cut-off plunger pump 3 through the shuttle valve 12, and the plunger pump continuously runs in a large-displacement no-load state. Hydraulic oil enters the low-pressure oil side of the crusher motor through the one-way valve, the crusher motor is prevented from being damaged by air suction, and the crusher gradually stops running under the action of the high-pressure overload valve.
Therefore, the utility model has the advantages of it is following: the displacement of the plunger pump is controlled through load pressure feedback and the valve core opening of a three-position four-way valve in the control valve, so that the crusher works normally, and the pilot control valve of the three-position four-way valve is controlled in an electric proportion mode, so that the motor of the crusher can be started and stopped stably.
The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all of which utilize the equivalent structure or equivalent flow transformation made by the content of the specification of the present invention, or directly or indirectly applied to other related technical fields, all included in the same way in the patent protection scope of the present invention.
Claims (8)
1. A crusher load sensitive control hydraulic system, comprising: the hydraulic control system comprises a hydraulic oil tank (1), an engine (2), a plunger pump (3), a first overflow valve (4), an electromagnetic unloading valve (5), a reversing control valve group (6), an energy accumulator (9) and a motor (10), wherein the plunger pump (3) is provided with an oil suction port and an oil outlet, the reversing control valve group (6) is provided with a control valve first oil inlet (P1), a control valve second oil inlet (P2), a control valve first oil outlet (A) and a control valve second oil outlet (B), the reversing control valve group (6) further comprises a control valve T oil port, a control valve X oil port and a control valve L oil port, the oil outlet of the plunger pump (3) is respectively connected with a control valve first oil inlet (P1) and a control valve second oil inlet (P2), the control valve second oil port (B) and the control valve first oil outlet (A) are respectively connected with the motor oil outlet (10), the crusher load-sensitive control hydraulic system also comprises a first oil port (G1) and a second oil port (G2).
2. The crusher load-sensitive control hydraulic system according to claim 1, characterized in that the crusher load-sensitive control hydraulic system further comprises a pressure reducing valve (7), the pressure reducing valve (7) is in control connection with the accumulator (9), and hydraulic oil enters the accumulator (9) through the first oil port (G1) after the pressure reducing valve (7) is opened.
3. A crusher load-sensitive control hydraulic system according to claim 1, characterized in that the crusher load-sensitive control hydraulic system further comprises a check valve (8), the check valve (8) is in control connection with an accumulator (9), and the accumulator (9) releases pressure through the check valve (8).
4. The hydraulic system for sensitive control of the load of the crusher as recited in claim 3, characterized in that the hydraulic system for sensitive control of the load of the crusher further comprises a shuttle valve (12), the motor (10) is connected with the shuttle valve (12), the high-pressure hydraulic oil at the oil inlet side of the motor (10) feeds back a pressure signal to the plunger pump (3) through the shuttle valve (12), and when the plunger pump (3) is continuously operated in a large displacement no-load state, the hydraulic oil enters the low-pressure oil side of the motor (10) through the check valve (8).
5. The hydraulic system for sensitive control of crusher load as claimed in claim 1, characterized in that said hydraulic system for sensitive control of crusher load further comprises a high pressure filter (14), and an oil outlet of said high pressure filter (14) is connected to an oil port X of the control valve.
6. The hydraulic system for sensitive control of the load of the crusher as recited in claim 5, characterized in that the hydraulic system for sensitive control of the load of the crusher further comprises a gear pump (15), wherein an oil suction port of the gear pump (15) is connected with the hydraulic oil tank (1) through a hydraulic hose, and an outlet of the gear pump (15) is connected with an inlet of the high pressure filter (14).
7. The hydraulic system for sensitive control of the load of the crusher according to claim 6, characterized in that the hydraulic system for sensitive control of the load of the crusher further comprises an overflow valve (13), wherein an outlet of the gear pump (15) is connected with an inlet of the overflow valve (13), and an oil return port of the overflow valve (13) is connected with an oil return port of the hydraulic oil tank (1).
8. The hydraulic system for sensitive control of crusher load according to claim 1, characterized in that, the hydraulic system for sensitive control of crusher load further comprises an overload protection valve (11), the overload protection valve (11) is connected with the motor (10), and the high-pressure hydraulic oil at the oil outlet of the motor (10) enters the low-pressure oil port of the motor (10) through the overload protection valve (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021468728.4U CN212717418U (en) | 2020-07-23 | 2020-07-23 | Crusher load sensitive control hydraulic system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021468728.4U CN212717418U (en) | 2020-07-23 | 2020-07-23 | Crusher load sensitive control hydraulic system |
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| CN212717418U true CN212717418U (en) | 2021-03-16 |
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| CN202021468728.4U Active CN212717418U (en) | 2020-07-23 | 2020-07-23 | Crusher load sensitive control hydraulic system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023272778A1 (en) * | 2021-06-29 | 2023-01-05 | 烟台杰瑞石油装备技术有限公司 | Turbine fracturing device |
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2020
- 2020-07-23 CN CN202021468728.4U patent/CN212717418U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023272778A1 (en) * | 2021-06-29 | 2023-01-05 | 烟台杰瑞石油装备技术有限公司 | Turbine fracturing device |
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