CN219527769U - Control system of breaking hammer and hydraulic excavator - Google Patents
Control system of breaking hammer and hydraulic excavator Download PDFInfo
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- CN219527769U CN219527769U CN202320469763.5U CN202320469763U CN219527769U CN 219527769 U CN219527769 U CN 219527769U CN 202320469763 U CN202320469763 U CN 202320469763U CN 219527769 U CN219527769 U CN 219527769U
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Abstract
The utility model relates to the technical field of engineering machinery and provides a control system of a breaking hammer and a hydraulic excavator. The controller just can drive the case switching-over of main valve through control valve group according to hydraulic excavator's shut down signal, makes the hydraulic oil in the working line of quartering hammer flow back to in the hydraulic tank, realizes the pressure release of working line, need not with the help of extra appurtenance, convenient operation can not cause the unable normal opening of stop valve that links to each other with working line, is convenient for carry out the dismantlement work of working line, effectively solves the condition that takes place hydraulic oil splash when dismantling working line.
Description
Technical Field
The utility model relates to the technical field of engineering machinery, in particular to a control system of a breaking hammer and a hydraulic excavator.
Background
The existing hydraulic excavator needs to detach the pipeline of the breaking hammer during transition or maintenance, for example, the breaking hammer excavator needs to detach the pipeline during maintenance or transition. However, when the breaking hammer is normally broken, the valve core of the main valve moves unidirectionally, when the breaking is stopped, the valve core of the main valve is closed, pressure oil still exists in the hydraulic system of the breaking hammer and the working pipeline of the breaking hammer after the breaking hammer is stopped, the residual pressure oil in the working pipeline of the breaking hammer can cause the valve core of the breaking hammer stop valve to be subjected to unbalanced load pressure so as not to be normally rotated and opened, and hydraulic oil can be splashed when the working pipeline of the breaking hammer is disassembled.
Disclosure of Invention
The utility model provides a control system of a breaking hammer and a hydraulic excavator, which are used for solving the defects that in the prior art, residual pressure oil in a working pipeline of the breaking hammer can cause that a valve core of a breaking hammer stop valve is subjected to unbalanced load pressure and can not be normally rotated to be opened, and hydraulic oil can be splashed when the working pipeline of the breaking hammer is disassembled.
The utility model provides a control system of a breaking hammer, comprising:
the oil outlet of the main valve is communicated with a working pipeline of the breaking hammer;
the control valve group is used for controlling the valve core of the main valve to change direction;
the controller is in communication connection with the control valve group, and the controller controls the control valve group to drive the valve core of the main valve to change direction according to a stop signal of the hydraulic excavator, so that the oil outlet of the main valve is communicated with the oil return port of the main valve.
According to the control system of the breaking hammer provided by the utility model, the control system further comprises:
the pressure relief control element is used for outputting pressure relief instructions of the working pipeline, the pressure relief control element is in communication connection with the controller, and the controller controls the control valve group to drive the valve core of the main valve to change direction according to a stop signal of the hydraulic excavator and a trigger signal of the pressure relief control element so that an oil outlet of the main valve is communicated with an oil return port of the main valve.
According to the control system of the breaking hammer provided by the utility model, the control valve group comprises:
a first control valve provided in a first pilot oil passage connected to a first pilot oil port of the main valve;
the second control valve is arranged on a second pilot oil path connected with a second pilot oil port of the main valve;
the controller controls the first control valve to drive the valve core of the main valve to change direction according to the starting signal of the hydraulic excavator and the triggering signal of the breaking hammer so as to enable the oil outlet of the main valve to be communicated with the oil inlet of the main valve;
the controller controls the second control valve to drive the valve core of the main valve to change direction according to the stop signal of the hydraulic excavator so as to enable the oil outlet of the main valve to be communicated with the oil return port of the main valve.
According to the control system of the breaking hammer, the first control valve and the second control valve are interlocked.
According to the control system of the breaking hammer provided by the utility model, the control system further comprises:
and the standby pressure source is communicated with a first pilot oil port of the main valve through the first pilot oil path, and is communicated with a second pilot oil port of the main valve through the second pilot oil path.
According to the control system of the breaking hammer provided by the utility model, the pilot lock is arranged between the standby pressure source and the first pilot oil path and between the standby pressure source and the second pilot oil path.
According to the control system of the breaking hammer, the pilot lock is in communication connection with the controller, and the controller controls the second control valve to drive the valve core of the main valve to change direction according to the opening signal of the pilot lock and the stop signal of the hydraulic excavator, so that the oil outlet of the main valve is communicated with the oil return port of the main valve.
The present utility model also provides a hydraulic excavator, including:
a breaking hammer;
the working pipeline is communicated with an oil inlet of the breaking hammer;
the oil return pipeline is communicated with an oil return port of the breaking hammer at one end, and is communicated with an oil return port of a hydraulic oil tank at the other end;
a control system for a breaking hammer as claimed in any one of the preceding claims.
According to the hydraulic excavator provided by the utility model, a first stop valve is arranged between the working pipeline and the oil inlet of the breaking hammer; and a second stop valve is arranged between the oil return pipeline and the oil return port of the breaking hammer.
According to the hydraulic excavator provided by the utility model, the oil return pipeline is provided with the filter.
The utility model provides a control system of a breaking hammer and a hydraulic excavator, wherein the control system of the breaking hammer comprises a main valve, a control valve group and a controller, wherein an oil outlet of the main valve is communicated with a working pipeline of the breaking hammer so as to supply oil to the breaking hammer through the working pipeline; the control valve group is used for controlling the valve core reversing of the main valve, the controller is in communication connection with the control valve group, and the controller controls the control valve group to drive the valve core of the main valve to reverse according to a stop signal of the hydraulic excavator, so that an oil outlet of the main valve can be communicated with an oil return port of the main valve.
So set up, the controller just can drive the case switching-over of main valve through control valve group according to hydraulic excavator's shut down signal, can make the hydraulic oil in the working line of quartering hammer flow back to hydraulic tank in, realize the pressure release of working line, need not with the help of extra appurtenance, convenient operation can not cause the case of the stop valve that links to each other with the working oil circuit to receive the unbalance loading pressure and can't normally open to be convenient for carry out the dismantlement work of working line, can effectively solve the condition that takes place hydraulic oil splash when dismantling the working line.
Drawings
In order to more clearly illustrate the utility model or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the utility model, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a control system of a breaking hammer according to the present utility model;
FIG. 2 is a control logic diagram of a breaking hammer according to a first mode of the present utility model;
fig. 3 is a control logic diagram of a breaking hammer according to a second embodiment of the present utility model.
Reference numerals:
1. a breaking hammer; 2. a working pipeline; 3. an oil return pipeline;
4. a first stop valve; 5. a second shut-off valve; 6. an overflow valve;
7. a filter; 8. a main valve; 9. a first control valve;
10. a second control valve; 11. a first pilot oil passage; 12. a second pilot oil passage;
13. a main pilot oil path; 14. a back-up pressure source; 15. a pilot lock;
16. a hydraulic pump; 17. a six-way valve; 18. and a hydraulic oil tank.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The control system of the breaking hammer and the hydraulic excavator of the present utility model are described below with reference to fig. 1 to 3.
As shown in fig. 1, the control system of the breaking hammer provided by the utility model can comprise a main valve 8, a control valve group and a controller.
The oil outlet of the main valve 8 can be communicated with the working pipeline 2 of the breaking hammer to supply oil to the breaking hammer 1 through the working pipeline 2, so that the breaking hammer 1 can work normally.
The control valve group can be used for controlling valve core reversing of the main valve 8, wherein the controller can be in communication connection with the control valve group, and the controller can control the control valve group to drive the valve core reversing of the main valve 8 according to a stop signal of the hydraulic excavator so that an oil outlet of the main valve 8 can be communicated with an oil return port of the main valve 8. Thus, the hydraulic oil reserved in the working pipeline 2 of the breaking hammer 1 can flow to the oil return port of the main valve 8 through the oil outlet of the main valve 8, so that the hydraulic oil in the working pipeline 2 can flow back to the hydraulic oil tank 18 through the oil return port, and the pressure relief of the working pipeline 2 is realized.
So set up, the controller just can drive the case switching-over of main valve 8 through control valve group according to hydraulic excavator's shut down signal, can make the hydraulic oil in the working line 2 of quartering hammer 1 flow back to hydraulic tank 18 in, realize the pressure release of working line 2, need not with the help of extra appurtenance, convenient operation can not cause the case of the stop valve that links to each other with the working oil circuit to receive the unbalance loading pressure and can't normally open to be convenient for carry out the dismantlement work of working line 2, can effectively solve the condition that takes place hydraulic oil splash when dismantling working line 2. In addition, whether the pressure relief is possible is determined according to whether the machine is started (i.e., whether the hydraulic excavator is started), so that the hydraulic excavator cannot conflict with control logic of normal operation of the breaking hammer 1 (such as striking of the breaking hammer 1) and cannot cause misoperation.
In an alternative embodiment of the present utility model, the control system of the breaking hammer may further include a pressure relief control element, where the pressure relief control element may be used to output a pressure relief indication of the working pipeline 2, the pressure relief control element may be in communication with the control valve group, and the controller may control the control valve group to drive the valve core of the main valve 8 to change direction according to a stop signal of the hydraulic excavator and a trigger signal of the pressure relief control element, so that an oil outlet of the main valve 8 may be communicated with an oil return port of the main valve 8, and hydraulic oil in the working pipeline 2 may flow back into the hydraulic oil tank 18 through the oil return port, so as to implement pressure relief of the working pipeline 2.
When the hydraulic excavator is in a stop state and the pressure relief control element is triggered, the controller can control the control valve group to drive the valve core of the main valve 8 to change direction, so that the oil outlet of the main valve 8 is communicated with the oil return port of the main valve 8.
In an alternative embodiment, the pressure relief control element may be a pressure relief button that may be disposed within the cab of the hydraulic excavator for operation by an operator.
Alternatively, the pressure release control element may be a pressure release button, which may be disposed on a display screen in the cab, so that an operator may operate the pressure release button.
Or, the pressure release control element can be an operating handle, the operating handle can be arranged in the cab, and an operator can trigger and close the pressure release control element by rotating the operating handle.
In an alternative embodiment of the present utility model, the control valve group may include a first control valve 9 and a second control valve 10, and the first control valve 9 may be disposed on the first pilot oil path 11 so as to be able to control on-off of the first pilot oil path 11; second control valve 10 may be provided on second pilot oil passage 12 to be able to control on and off of second pilot oil passage 12. Here, the first pilot oil passage 11 may be connected to the first pilot oil port of the main valve 8, and the second pilot oil passage 12 may be connected to the second pilot oil port of the main valve 8 to supply pilot oil to the first pilot oil port and the second pilot oil port of the main valve 8, respectively. In this way, the opening and closing of the first control valve 9 and the second control valve 10 can respectively control the opening and closing of the first pilot oil path 11 and the second pilot oil path 12, so that the position of the valve core of the main valve 8 can be controlled, and the valve core of the main valve 8 can be commutated.
The controller can control the first control valve 9 to be opened according to a starting signal of the hydraulic excavator and a trigger signal of the breaking hammer 1, so that the first pilot oil passage 11 is conducted, pilot oil can enter a first pilot oil port of the main valve 8 through the first pilot oil passage 11 to drive a valve core of the main valve 8 to change direction, an oil outlet of the main valve 8 can be communicated with an oil inlet of the main valve 8, and accordingly hydraulic oil can enter a working pipeline 2 of the breaking hammer 1 through the main valve 8 and enter the breaking hammer 1, and the breaking hammer 1 can work normally.
Here, the trigger signal of the breaking hammer 1 may be a pedal signal of the hydraulic excavator, that is, after the hydraulic excavator is started and an operator pedals the pedal, the controller may control the first control valve 9 to be opened, so that the pilot oil may enter the first pilot oil port of the main valve 8 through the first pilot oil path 11, and drive the valve core of the main valve 8 to change direction, so that the oil outlet of the main valve 8 is communicated with the oil inlet of the main valve 8.
And, the controller can control the second control valve 10 to drive the valve core of the main valve 8 to change direction according to the stop signal of the hydraulic excavator so as to enable the oil outlet of the main valve 8 to be communicated with the oil return port of the main valve 8.
Specifically, the controller may control the second control valve 10 to open according to a stop signal of the hydraulic excavator, so that the second pilot oil path 12 is turned on, so that pilot oil can enter the second pilot oil port of the main valve 8 through the second pilot oil path 12, so as to drive the valve core of the main valve 8 to change direction, so that the oil outlet of the main valve 8 can be communicated with the oil return port of the main valve 8, and hydraulic oil in the working pipeline 2 can flow back to the hydraulic oil tank 18 through the oil return port of the main valve 8, thereby realizing pressure relief of the working pipeline 2.
Here, the control valve group comprises a first control valve 9 and a second control valve 10 to realize the reversing of the main valve 8, when any one control valve is blocked, the other control valve is not affected, and the main valve 8 is not caused to generate unnecessary reversing to cause misoperation, or high-pressure oil is caused to enter a low-pressure area of the breaking hammer 1 to cause the breaking hammer 1 to be damaged; when the main valve 8 is independently commutated by a reversing valve or an electromagnetic valve, high-pressure oil is easy to enter a low-pressure area of the breaking hammer 1 under the condition that the valve core is blocked, so that the breaking hammer 1 is damaged.
In the present embodiment, the first control valve 9 and the second control valve 10 may be interlocked. In this way, it is possible to avoid the damage of the main valve 8 caused by the simultaneous conduction of the first pilot oil passage 11 and the second pilot oil passage 12 while supplying the pilot oil to the main valve 8; and can avoid misoperation of operators.
In an alternative embodiment, both the first control valve 9 and the second control valve 10 may be solenoid valves, and in particular, both the first control valve 9 and the second control valve 10 may be solenoid valves that are unidirectional.
In an alternative embodiment of the present utility model, the control system of the breaking hammer may further include a backup pressure source 14, and the backup pressure source 14 may be in communication with the first pilot oil port of the main valve 8 through the first pilot oil path 11, and the backup pressure source 14 may be in communication with the second pilot oil port of the main valve 8 through the second pilot oil path 12. In this way, pilot oil may be provided to the main valve 8 by the backup pressure source 14.
In alternative embodiments, the back-up pressure source 14 may be an accumulator. The energy accumulator can convert the energy in the hydraulic system into compression energy or potential energy for storage, and when the system is needed, the compression energy or potential energy can be converted into hydraulic energy for release. In this way, the hydraulic oil in the hydraulic system of the hydraulic excavator may be stored, and the stored hydraulic oil may be used as the pilot oil control main valve 8.
In an alternative embodiment, pilot lock 15 may be provided between backup pressure source 14 and both first pilot oil passage 11 and second pilot oil passage 12. In this way, pilot lock 15 can prevent pilot oil from entering first pilot oil passage 11 and second pilot oil passage 12 when there is no need to operate breaking hammer 1, and can prevent an operator from operating by mistake.
In this embodiment, the pilot lock 15 may be communicatively connected to a controller, and the controller may control the second control valve 10 to drive the valve element of the main valve 8 to change direction according to an opening signal of the pilot lock 15 and a stop signal of the hydraulic excavator, so that an oil outlet of the main valve 8 is communicated with an oil return port of the main valve 8. In this way, the second control valve 10 can be controlled only under the condition that the pilot lock 15 is in the open state and the hydraulic shovel is in the stopped state, and occurrence of erroneous operation can be avoided.
Here, the controller may also control the first control valve 9 to drive the valve core 8 of the main valve to change direction according to the opening signal of the pilot lock 15, the starting signal of the hydraulic excavator, and the triggering signal of the breaking hammer 1, so that the oil outlet of the main valve 8 is communicated with the oil inlet of the main valve 8, and hydraulic oil may enter the working pipeline 2 of the breaking hammer 1 and enter the breaking hammer 1, so that the breaking hammer 1 may work normally.
In the present embodiment, backup pressure source 14 may communicate with first pilot oil passage 11 and second pilot oil passage 12, respectively, through main pilot oil passage 13, and pilot lock 15 may be provided on main pilot oil passage 13, and pilot lock 15 may control on/off of main pilot oil passage 13.
In the first mode, as shown in fig. 2:
when the hydraulic excavator is in the power-on state, the controller judges whether the hydraulic excavator is started, if the hydraulic excavator is started, the controller shields the pressure relief control element (namely, the controller can shield the pressure relief button of the working pipeline 2 of the breaking hammer 1), at the moment, the pilot lock 15 is in the open state, and the breaking hammer 1 can work normally without pressure relief. Specifically, after the operator steps on the pedal, a pedal trigger signal is generated, the controller receives the pedal trigger signal and then outputs a signal to the first control valve 9, the first control valve 9 is opened (at this time, the second control valve 10 is closed), the first pilot oil path 11 is conducted, pilot oil (i.e. pressure oil) in the standby pressure source 14 is input into the first pilot oil port of the main valve 8, the valve core of the main valve 8 is reversed, the oil outlet of the main valve 8 is communicated with the oil inlet of the main valve 8, hydraulic oil is supplied to the working pipeline 2 of the breaking hammer 1, and the breaking hammer 1 can work normally.
When the hydraulic excavator is in the power-on state, if the hydraulic excavator is not started (i.e. the hydraulic excavator is in the shutdown state), and after an operator triggers the pressure relief control element (i.e. clicks the pressure relief button of the working pipeline 2 of the breaking hammer 1), the controller receives the shutdown signal of the hydraulic excavator and the trigger signal of the pressure relief control element and then outputs a signal to the second control valve 10, the second control valve 10 is opened (at this time, the first control valve 9 is closed), pilot oil (i.e. pressure oil) in the standby pressure source 14 is input into the second pilot oil port of the main valve 8, so that the valve core of the main valve 8 is reversed, the oil outlet of the main valve 8 is communicated with the oil return port of the main valve 8, and hydraulic oil in the working pipeline 2 of the breaking hammer 1 is returned into the hydraulic oil tank 18, so that the pressure relief of the working pipeline 2 of the breaking hammer 1 is realized.
In the second mode, as shown in fig. 3:
when the hydraulic excavator is in the power-on state, the controller judges whether the hydraulic excavator is started, and if the hydraulic excavator is started (namely, the engine is started) and the pilot lock 15 is in the open state, the controller shields an automatic pressure relief function, and at the moment, the breaking hammer 1 can work normally without pressure relief. Specifically, after the operator steps on the pedal, a pedal trigger signal is generated, the controller receives the pedal trigger signal and then outputs a signal to the first control valve 9, the first control valve 9 is opened (at this time, the second control valve 10 is closed), the first pilot oil path 11 is conducted, pilot oil (i.e. pressure oil) in the standby pressure source 14 is input into the first pilot oil port of the main valve 8, the valve core of the main valve 8 is reversed, the oil outlet of the main valve 8 is communicated with the oil inlet of the main valve 8, hydraulic oil is supplied to the working pipeline 2 of the breaking hammer 1, and the breaking hammer 1 can work normally.
When the hydraulic excavator is in the power-on state, if the hydraulic excavator is not started (i.e. the engine is not started), and the pilot lock 15 is in the open state, the controller receives a stop signal of the hydraulic excavator and then outputs a signal to the second control valve 10, the second control valve 10 is opened (at this time, the first control valve 9 is closed), pilot oil (i.e. pressure oil) in the standby pressure source 14 is input into the second pilot oil port of the main valve 8, so that the valve core of the main valve 8 is reversed, the oil outlet of the main valve 8 is communicated with the oil return port of the main valve 8, hydraulic oil in the working pipeline 2 of the breaking hammer 1 is enabled to flow back into the hydraulic oil tank 18, and automatic pressure relief of the working pipeline 2 of the breaking hammer 1 is realized.
The hydraulic excavator provided by the utility model is described below, and the hydraulic excavator described below and the control system of the breaking hammer described above can be referred to correspondingly.
The hydraulic excavator provided by the utility model can comprise a breaking hammer 1, a working pipeline 2, an oil return pipeline 3 and a breaking hammer control system.
The working pipeline 2 can be communicated with an oil inlet of the breaking hammer 1, and the working pipeline 2 can be communicated with an oil outlet of a main valve 8 of a control system of the breaking hammer. Specifically, one end of the working pipeline 2 is communicated with an oil inlet of the breaking hammer 1, and the other end is communicated with an oil outlet of the main valve 8.
One end of the oil return line 3 may be communicated with an oil return port of the breaking hammer 1, and the other end of the oil return line 3 may be communicated with an oil return port of the hydraulic oil tank 18. Thus, the oil return of the breaking hammer 1 can be realized, so that the breaking hammer 1 can be ensured to work normally.
The control system of the breaking hammer may be any of the control systems of breaking hammers described in the above embodiments.
The beneficial effects achieved by the hydraulic excavator provided by the utility model are consistent with those achieved by the control system of the breaking hammer provided by the utility model, and are not repeated here.
In an alternative embodiment, a first stop valve 4 may be provided between the working line 2 and the oil inlet of the breaking hammer 1, and a second stop valve 5 may be provided between the oil return line 3 and the oil return port of the breaking hammer 1. In this way, when the breaking hammer 1 is detached, the first stop valve 4 and the second stop valve 5 can be closed, and the hydraulic oil in the breaking hammer 1 can be discharged.
In an alternative embodiment, a filter 7 may be provided on the return line 3 to filter the return oil.
In an alternative embodiment, the working pipeline 2 may be provided with an overflow valve 6, so that part of hydraulic oil can be led out through the overflow valve 6 when the pressure in the working pipeline 2 is too high, thereby ensuring the safety of the working pipeline 2 and improving the safety of the breaking hammer 1 during operation.
In an alternative embodiment, the hydraulic excavator may further comprise a hydraulic pump 16, an oil inlet of the hydraulic pump 16 being in communication with a hydraulic tank 18, an oil outlet of the hydraulic pump 16 being in communication with an oil inlet of the main valve 8 for supplying the breaking hammer 1 with hydraulic oil.
In an alternative embodiment, the pilot valve may be a hexagonally-connected valve 17, the hexagonally-connected valve 17 may be respectively communicated with the main pilot oil passage 13 and other working components, and the hexagonally-connected valve 17 may be connected to the backup pressure source 14, so that the backup pressure source 14 may simultaneously supply pressure oil to a plurality of working components through the hexagonally-connected valve 17.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present utility model without undue burden.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. A control system for a breaking hammer, comprising:
the oil outlet of the main valve is communicated with a working pipeline of the breaking hammer;
the control valve group is used for controlling the valve core of the main valve to change direction;
the controller is in communication connection with the control valve group, and the controller controls the control valve group to drive the valve core of the main valve to change direction according to a stop signal of the hydraulic excavator, so that the oil outlet of the main valve is communicated with the oil return port of the main valve.
2. The control system of a breaking hammer according to claim 1, further comprising:
the pressure relief control element is used for outputting pressure relief instructions of the working pipeline, the pressure relief control element is in communication connection with the controller, and the controller controls the control valve group to drive the valve core of the main valve to change direction according to a stop signal of the hydraulic excavator and a trigger signal of the pressure relief control element so that an oil outlet of the main valve is communicated with an oil return port of the main valve.
3. The control system of a breaking hammer according to claim 1, characterized in that the control valve group comprises:
a first control valve provided in a first pilot oil passage connected to a first pilot oil port of the main valve;
the second control valve is arranged on a second pilot oil path connected with a second pilot oil port of the main valve;
the controller controls the first control valve to drive the valve core of the main valve to change direction according to the starting signal of the hydraulic excavator and the triggering signal of the breaking hammer so as to enable the oil outlet of the main valve to be communicated with the oil inlet of the main valve;
the controller controls the second control valve to drive the valve core of the main valve to change direction according to the stop signal of the hydraulic excavator so as to enable the oil outlet of the main valve to be communicated with the oil return port of the main valve.
4. A control system of a breaking hammer according to claim 3, characterized in that the first control valve and the second control valve are interlocked.
5. A control system of a breaking hammer according to claim 3, characterized in that it further comprises:
and the standby pressure source is communicated with a first pilot oil port of the main valve through the first pilot oil path, and is communicated with a second pilot oil port of the main valve through the second pilot oil path.
6. The control system of a breaking hammer according to claim 5, characterized in that a pilot lock is provided between the backup pressure source and both the first pilot oil passage and the second pilot oil passage.
7. The control system of the breaking hammer according to claim 6, wherein the pilot lock is in communication connection with the controller, and the controller controls the second control valve to drive the valve core of the main valve to change direction according to an opening signal of the pilot lock and a stop signal of the hydraulic excavator, so that an oil outlet of the main valve is communicated with an oil return port of the main valve.
8. A hydraulic excavator, comprising:
a breaking hammer;
the working pipeline is communicated with an oil inlet of the breaking hammer;
the oil return pipeline is communicated with an oil return port of the breaking hammer at one end, and is communicated with an oil return port of a hydraulic oil tank at the other end;
a control system for a breaking hammer according to any one of claims 1-7.
9. The hydraulic excavator of claim 8 wherein a first shut-off valve is provided between the working line and the oil inlet of the breaking hammer; and a second stop valve is arranged between the oil return pipeline and the oil return port of the breaking hammer.
10. The hydraulic excavator of claim 8 wherein the return line is provided with a filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320469763.5U CN219527769U (en) | 2023-03-13 | 2023-03-13 | Control system of breaking hammer and hydraulic excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320469763.5U CN219527769U (en) | 2023-03-13 | 2023-03-13 | Control system of breaking hammer and hydraulic excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219527769U true CN219527769U (en) | 2023-08-15 |
Family
ID=87629540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320469763.5U Active CN219527769U (en) | 2023-03-13 | 2023-03-13 | Control system of breaking hammer and hydraulic excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219527769U (en) |
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2023
- 2023-03-13 CN CN202320469763.5U patent/CN219527769U/en active Active
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