CN217557054U - Control device suitable for crushing operation of energy-saving excavator - Google Patents
Control device suitable for crushing operation of energy-saving excavator Download PDFInfo
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- CN217557054U CN217557054U CN202221249374.3U CN202221249374U CN217557054U CN 217557054 U CN217557054 U CN 217557054U CN 202221249374 U CN202221249374 U CN 202221249374U CN 217557054 U CN217557054 U CN 217557054U
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Abstract
The utility model discloses a control device suitable for the crushing operation of an energy-saving excavator, which comprises a crushing hammer pedal valve, a controller, a two-position three-way reversing solenoid valve, a ball valve, a hydraulic crushing hammer, a main control valve controlled by the crushing hammer pedal valve and a pressure switch; the input interface of the two-position three-way reversing solenoid valve is connected with the energy storage oil cylinder; a first reversing interface of the two-position three-way reversing electromagnetic valve is connected with the energy accumulator combination station; a second reversing connector of the two-position three-way reversing electromagnetic valve is connected with the ball valve; the ball valve is connected with an oil return port of the hydraulic breaking hammer through a pipeline; the main control valve is connected with an oil inlet of the crushing hammer through a pipeline; a pressure switch is arranged on the breaking hammer pedal valve, and the pressure switch, the controller and the two-position three-way reversing electromagnetic valve are connected through a line; the breaking hammer foot valve is connected with the main control valve. The utility model discloses controlling means can solve because of the crushing operation difficulty that the energy storage hydro-cylinder area pressed to lead to and the problem that the crushing operation efficiency is low that leads to behind the energy storage hydro-cylinder pressure release completely.
Description
Technical Field
The utility model relates to an engineering machine tool hydraulic pressure energy storage energy-saving technical field especially relates to a controlling means of energy-saving excavator crushing operation.
Background
At present, with the strict requirements of national environmental protection policies, the traditional mine blasting operation is gradually replaced by the hydraulic breaking hammer operation equipped for the excavator, and the proportion of the time of the breaking operation of medium-sized and large-sized excavators to the use time of the excavators tends to increase gradually. Because the energy storage system for recovering potential energy by utilizing the descending of the movable arm is arranged in the energy-saving excavator, the energy-saving and efficient advantages of the energy-saving excavator can be fully exerted when earthwork operation is carried out, and in order to meet different requirements of a construction site, a market customer usually adds a hydraulic breaking hammer to carry out breaking operation after purchasing the energy-saving excavator, so that the income is increased, and meanwhile, the full utilization of the energy-saving excavator can be ensured.
When the energy-saving excavator carries out crushing operation, an operation surface needing continuous striking is often met, normal crushing operation can be guaranteed only by abutting a drill rod of the crushing hammer against the striking surface, but an energy storage oil cylinder of the energy-saving excavator is always in a state of pressure and plays a reverse thrust for a movable arm, so that the drill rod is easy to bounce off a contact surface to cause idle striking when the crushing hammer strikes the operation, the striking effect of the crushing hammer is influenced, the service life of the crushing hammer is greatly shortened, and the influence on the energy-saving excavator additionally provided with the medium-large hydraulic crushing hammer is particularly obvious. In order to guarantee effective crushing operation, market customers can only release all oil pressure of the energy storage oil cylinder, but the problems that a drill rod is difficult to pull out due to insufficient lifting force of a movable arm and the lifting speed of the movable arm is too low so that the whole crushing operation efficiency is low can occur.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a be suitable for energy-saving excavator broken operation's controlling means has solved among the prior art energy-saving excavator and has installed the quartering hammer additional and carry out broken operation, because of the broken operation difficulty that the energy storage hydro-cylinder area pressed to lead to and the broken work inefficiency problem that leads to behind the energy storage hydro-cylinder complete pressure release.
The utility model discloses a realize above-mentioned purpose, realize through following technical scheme.
A control device suitable for crushing operation of an energy-saving excavator comprises a crushing hammer pedal valve, a controller, a two-position three-way reversing electromagnetic valve, a ball valve, a hydraulic crushing hammer, a main control valve controlled by the crushing hammer pedal valve and a pressure switch controlled by the crushing hammer pedal valve.
One interface of the energy storage oil cylinder is connected with an input interface of the two-position three-way reversing solenoid valve through a pipeline, and the other interface of the energy storage oil cylinder is connected with an oil return port of the crushing hammer through a pipeline; a first reversing interface of the two-position three-way reversing electromagnetic valve is connected with the energy accumulator combination station; a second reversing connector of the two-position three-way reversing electromagnetic valve is connected with the ball valve; the ball valve is connected with an oil return port of the hydraulic breaking hammer through a pipeline.
The main control valve is connected with an oil inlet of the crushing hammer through a pipeline; the breaking hammer foot valve is connected with a pressure switch, and the pressure switch, the controller and the two-position three-way reversing electromagnetic valve are connected through a circuit; the breaking hammer foot valve is connected with the main control valve.
When the foot valve of the breaking hammer is stepped on by a foot, the pressure switch is closed, the energy storage oil cylinder is communicated with the ball valve through the two-position three-way reversing electromagnetic valve, and the main control valve provides hydraulic pressure for the hydraulic breaking hammer; therefore, the energy storage oil cylinder is communicated with an oil return opening of the hydraulic breaking hammer 4, and the energy storage oil cylinder completes pressure relief.
When the breaking hammer pedal valve is loosened, the pressure switch is not closed, the two-position three-way reversing electromagnetic valve enables the energy storage oil cylinder to be communicated with the energy accumulator combination station, and the pressure state of the energy storage oil cylinder is recovered; the main control valve does not provide hydraulic pressure to the hydraulic breaking hammer.
As the preferred technical scheme, the pedal valve of the breaking hammer is provided with a pilot oil port, a pilot oil inlet and a pilot oil return port; a pilot oil port of the breaking hammer pedal valve is respectively connected with a control end of the main control valve and the pressure switch through pipelines;
when the foot pedal valve of the breaking hammer is stepped on by a foot, the pilot oil inlet and the pilot oil port are communicated, and pilot oil enters the control end of the main control valve and the pressure switch through the pilot oil port to enable the main control valve to work and the pressure switch to be closed;
when the breaking hammer pedal valve is loosened, the pilot oil port and the pilot oil return port are communicated, and pilot oil flows back to stop the main control valve and open the pressure switch.
As the preferred technical scheme, the pressure switch is connected with the input end of the controller; the output end of the controller is connected with an electric control device of the two-position three-way reversing electromagnetic valve.
As the preferred technical scheme, the ball valve is connected with an oil return port of the hydraulic breaking hammer through a pipeline.
When an operator pedals the breaking hammer pedal valve, a second reversing interface of the two-position three-way reversing electromagnetic valve is communicated with the first reversing interface; when the breaking hammer pedal valve is loosened, the pressure switch does not work, and the second reversing interface of the two-position three-way reversing electromagnetic valve is communicated with the input interface.
According to a preferable technical scheme, the control device further comprises a movable arm hydraulic device, one interface of the movable arm hydraulic device is connected with an oil return port of the hydraulic breaking hammer through a pipeline, and the other interface of the movable arm hydraulic device is connected with the main control valve through a pipeline.
As the preferred technical scheme, the main control valve is connected with the oil cooler.
As a preferable technical solution, the control device further includes a boom spool; the main control valve is connected with a movable arm valve core through a pipeline, and the movable arm valve core is connected with a movable arm hydraulic device through a pipeline; an oil return port of the hydraulic breaking hammer is connected with a movable arm valve core through a pipeline; the movable arm valve core is connected with a movable arm hydraulic device through a pipeline; the movable arm valve core is connected with the main pump.
As a preferred technical scheme, the pressure switch is installed on a breaking hammer foot valve, and the breaking hammer foot valve is installed on a cab bottom plate of the excavator.
As the preferred technical scheme, the movable arm hydraulic device comprises a plurality of movable arm oil cylinders which are connected in parallel; one interface of each movable arm oil cylinder is connected with an oil return port of the hydraulic breaking hammer through a pipeline, and the other interface of each movable arm oil cylinder is connected with a main control valve through a pipeline.
As the preferred technical scheme, the accumulator combination station comprises a nitrogen cylinder and a piston tank, wherein the nitrogen cylinder is connected with the piston tank through a pipeline, and the piston tank is connected with a first reversing interface of a two-position three-way reversing electromagnetic valve through a pipeline.
The utility model has the advantages that: when the energy-saving excavator is additionally provided with the hydraulic breaking hammer for breaking operation, as long as a driver steps on the breaking hammer pedal valve, the large-cavity hydraulic oil of the energy storage oil cylinder is automatically connected to an oil return port of the hydraulic breaking hammer to complete pressure relief, so that the breaking operation is not influenced by the energy storage pressure; when the breaking hammer pedal valve is loosened, the large-cavity hydraulic oil of the energy storage oil cylinder is automatically connected into the energy accumulator combination station to recover the state under pressure, so that the working efficiency of the whole breaking operation is improved. The ball valve is switched from the normally open state to the normally closed state after the crushing operation is finished, and leakage of hydraulic oil pressure of the energy storage system is prevented. The control device is convenient and efficient, and has a remarkable effect of improving the crushing operation efficiency of the energy-saving excavator.
Drawings
Fig. 1 is a schematic structural diagram of the control device suitable for the crushing operation of the energy-saving excavator of the present invention.
Fig. 2 is a partially enlarged view of a portion a of fig. 1.
Fig. 3 is a partially enlarged view of a portion B of fig. 1.
Fig. 4 is a partially enlarged view of a portion C of fig. 1.
Wherein: a breaking hammer pedal valve-1; a pressure switch-2; a controller-3; a hydraulic breaking hammer-4; a two-position three-way reversing solenoid valve-5; a ball valve-6; a main control valve-7; a boom spool-71; an oil cooler-72; main pump-73; an energy storage oil cylinder-8; a boom cylinder-81; an accumulator combination station-9; nitrogen cylinder-91; a piston can-92.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
Example 1. As shown in fig. 1, the hydraulic breaking hammer comprises a breaking hammer foot valve 1, a controller 3, a two-position three-way reversing electromagnetic valve 5, a ball valve 6, a hydraulic breaking hammer 4, a main control valve 7 controlled by the breaking hammer foot valve 1 and a pressure switch 2 controlled by the breaking hammer foot valve 1.
One interface of the energy storage oil cylinder 8 is connected with an input interface E of the two-position three-way reversing electromagnetic valve 5 through a pipeline, and the other interface of the energy storage oil cylinder 8 is connected with an oil return port T of the crushing hammer 4 through a pipeline; a first reversing interface D of the two-position three-way reversing electromagnetic valve 5 is connected with the energy accumulator combination station 9; a second reversing connector C of the two-position three-way reversing electromagnetic valve 5 is connected with the ball valve 6; the ball valve 6 is connected with an oil return port T of the hydraulic breaking hammer 4 through a pipeline;
the main control valve 7 is connected with an oil inlet B of the crushing hammer 4 through a pipeline; the breaking hammer pedal valve 1 is connected with a pressure switch 2; the pressure switch 2, the controller 3 and the two-position three-way reversing solenoid valve 5 are connected through a line; the breaking hammer foot valve 1 is connected with a main control valve 7.
When the breaking hammer pedal valve 1 is stepped by a foot, the pressure switch 2 is closed, the energy storage oil cylinder 8 is communicated with the ball valve 6 through the two-position three-way reversing electromagnetic valve 5, and the main control valve 7 provides hydraulic pressure for the hydraulic breaking hammer 4; when the breaking hammer pedal valve 1 is loosened, the pressure switch 2 is not closed, the two-position three-way reversing electromagnetic valve 5 enables the energy storage oil cylinder 8 to be communicated with the energy storage device combination station 9, and the main control valve 7 does not provide hydraulic pressure for the hydraulic breaking hammer 4. And a return spring is arranged on the two-position three-way reversing electromagnetic valve 5.
The breaking hammer foot valve 1 is a two-position three-way spring reset valve. The breaking hammer pedal valve 1 is provided with a pilot oil port PP, a pilot oil inlet port P and a pilot oil return port T'; a pilot oil port PP of the breaking hammer pedal valve 1 is respectively connected with a control end of a main control valve 7 and a pressure switch 2 through pipelines; the pressure switch 2 is arranged on the breaking hammer foot valve 1.
When the foot pedal valve 1 of the breaking hammer is stepped on by a foot, the pilot oil inlet P and the pilot oil port PP are communicated, and pilot oil enters the control end of the main control valve 7 and the pressure switch 2 through the pilot oil port PP, so that the main control valve 7 works and the pressure switch 2 is closed; when the breaking hammer pedal valve 1 is loosened, the pilot oil port PP and the pilot oil return port T' are communicated, and pilot oil flows back to stop the main control valve 7 and start the pressure switch 2.
The pressure switch 2 is connected with an input end L1 of the controller 3; the output end L2 of the controller 3 is connected with an electric control device of the two-position three-way reversing electromagnetic valve 5.
An input interface E of the two-position three-way reversing solenoid valve 5 is connected with an energy storage oil cylinder 8; a first reversing interface D of the two-position three-way reversing electromagnetic valve 5 is connected with the energy accumulator combination station 9; a second reversing connector C of the two-position three-way reversing electromagnetic valve 5 is connected with the ball valve 6; the ball valve 6 is connected with an oil return port T of the hydraulic breaking hammer 4 through a pipeline; when an operator pedals the breaking hammer pedal valve 1, a second reversing connector C of the two-position three-way reversing solenoid valve 5 is communicated with a first reversing connector D; when the breaking hammer pedal valve 1 is loosened, the pressure switch 2 does not work, and the second reversing interface C of the two-position three-way reversing electromagnetic valve 5 is communicated with the input interface E.
The control device further comprises a movable arm hydraulic device, one interface of the movable arm hydraulic device is connected with an oil return port T of the hydraulic breaking hammer 4 through a pipeline, and the other interface of the movable arm hydraulic device is connected with the main control valve 7 through a pipeline.
The main control valve 7 is connected to the oil cooler 72.
The control device further includes a boom spool 71; the main control valve 7 is connected with a movable arm valve core 71 through a pipeline, and the movable arm valve core 71 is connected with a movable arm hydraulic device through a pipeline; an oil return port T of the hydraulic breaking hammer 4 is connected with the movable arm valve core 71 through a pipeline; the boom spool 71 is connected to the boom hydraulic device through a pipeline; the boom spool 71 is connected to a main pump 73.
The pressure switch 2 is installed on the breaking hammer foot valve 1, and the breaking hammer foot valve 1 is installed on a cab bottom plate of the excavator.
The boom hydraulic device includes a plurality of boom cylinders 81 connected in parallel; one interface of each movable arm oil cylinder 81 is connected with an oil return port T of the hydraulic breaking hammer 4 through a pipeline, and the other interface is connected with the main control valve 7 through a pipeline.
The accumulator combination station 9 comprises a nitrogen gas bottle 91 and a piston tank 92, wherein the nitrogen gas bottle 91 is connected with the piston tank 92 through a pipeline, and the piston tank 92 is connected with a first reversing interface D of the two-position three-way reversing electromagnetic valve 5 through a pipeline.
The two-position three-way electromagnetic valve controls a loop of the energy storage oil cylinder and energy accumulator combination station and an oil return loop of the energy storage oil cylinder and the hydraulic breaking hammer; the pressure switch controls the controller and the electric loop of the two-position three-way electromagnetic valve; the controller is reserved with a port, the input end of the controller is connected with the pressure switch, and the output end of the controller controls the reversing of the two-position three-way electromagnetic valve; the breaking hammer foot valve controls the reversing of the main control valve and improves a pressure signal for the pressure switch; the ball valve is in a normally open state, and after all crushing operations are finished, the ball valve is manually switched to a normally closed state. When the energy-saving excavator is additionally provided with the hydraulic breaking hammer for breaking operation, as long as a driver steps on the breaking hammer pedal valve, hydraulic oil in a large cavity of the energy storage oil cylinder is automatically connected into an oil return channel of the hydraulic breaking hammer to complete pressure relief, so that the breaking operation is not influenced by energy storage pressure; when the pedal valve of the crushing hammer is loosened, hydraulic oil in a large cavity of the energy storage oil cylinder is automatically connected into the energy accumulator combination station to recover the state under pressure, so that the working efficiency of the whole crushing operation is improved; the ball valve is switched from the normally open state to the normally closed state after the crushing operation is finished, and leakage of hydraulic oil pressure of the energy storage system is prevented. Because the oil pressure of the energy storage system is attenuated due to frequent switching of the electromagnetic valves during crushing operation, the oil pressure needs to be checked and supplemented in time, and the oil pressure is usually operated once per shift. The control device is convenient and efficient, and has a remarkable effect of improving the crushing operation efficiency of the energy-saving excavator. The main control valve is also called a breaking hammer valve core.
The hydraulic crushing hammer comprises a crushing hammer pedal valve, a pressure switch, a controller, a control port, a hydraulic crushing hammer, a two-position three-way reversing electromagnetic valve, a ball valve, a main control valve, an energy storage oil cylinder and an energy accumulator combination station, wherein the crushing hammer pedal valve is arranged on a cab bottom plate and provided with a first return spring, the pressure switch is arranged on the crushing hammer pedal valve, the controller is provided with a reserved control port, the hydraulic crushing hammer, the two-position three-way reversing electromagnetic valve is arranged on a platform and selects the position closest to an energy storage oil cylinder, the second return spring is arranged on the two-position three-way reversing electromagnetic valve, and the ball valve, the main control valve, the energy storage oil cylinder and the energy accumulator combination station are arranged between the two-position three-way reversing electromagnetic valve and a hydraulic crushing hammer oil return pipeline. The hammer pedal valve is a two-position three-way spring return valve, and under the action of a spring on the hammer pedal valve, the hammer pedal valve is used for switching between closing and non-closing of a driver control electric circuit. A pilot oil port PP of the breaking hammer pedal valve 1 is connected with a control end of the main control valve 7 and the pressure switch 2; the input end L1 of the controller 3 is connected with the pressure switch 2, and the output end L2 is connected with the control end of the two-position three-way reversing electromagnetic valve 5; an oil inlet B of the hydraulic breaking hammer 4 is connected with an oil port A of a main control valve 7, and an oil return port T is connected with a ball valve 6; the second reversing connector C of the two-position three-way reversing electromagnetic valve 5 is connected with the ball valve 6, the first reversing connector D is connected with the energy accumulator combination station 9, and the input connector E is connected with the large cavity of the energy accumulation oil cylinder 8.
The working steps are as follows.
The breaking hammer foot valve 1 is stepped on, an oil port P is communicated with a PP port to enter pilot oil, and the reversing of a main control valve 7 and the opening of a pressure switch 2 are controlled; after the main control valve 7 is reversed, the hydraulic oil output by the movable arm valve core 71 enters an oil inlet B of the hydraulic breaking hammer 4 from a communication oil port A, and the breaking hammer starts to work; after the pressure switch 2 is opened, an electric loop of the controller 3 and the two-position three-way reversing solenoid valve 5 is connected, so that the output end L2 of the controller 3 outputs current to control the two-position three-way reversing solenoid valve 5 to reverse, and at the moment, a second reversing interface C of the two-position three-way reversing solenoid valve 5 is connected with an E, so that a large cavity of the energy storage oil cylinder 8 is connected with an oil return port T of the hydraulic breaking hammer 4, and the energy storage oil cylinder finishes pressure relief.
As shown in fig. 1-4, when the breaking hammer foot valve 1 is loosened, the oil port PP is communicated with the oil port T', and the PP port has no pilot pressure and cannot control the reversing of the main control valve 7 and the opening of the pressure switch 2; the main control valve 7 cannot be reversed, so that the hydraulic oil output by the valve core of the movable arm and the oil port A loop are closed, no hydraulic oil enters an oil inlet B of the hydraulic breaking hammer 4, and the operation of the breaking hammer is stopped; the pressure switch 2 can not be opened, the electric loop of the controller 3 and the two-position three-way reversing electromagnetic valve 5 is disconnected, no current is output from the port L2 of the controller 3, the reversing of the two-position three-way reversing electromagnetic valve 5 can not be controlled, at the moment, the first reversing interface D and the first reversing interface E of the two-position three-way reversing electromagnetic valve 5 are connected, so that the large cavity of the energy storage oil cylinder 8 is connected with the energy storage combination station 9, and the under-pressure state of the energy storage oil cylinder is recovered.
After the ball valve 6 is closed, the connection loop of the large cavity of the energy storage oil cylinder 8 and the oil port T of the hydraulic breaking hammer 4 is completely closed.
Claims (10)
1. A control device suitable for crushing operation of an energy-saving excavator is characterized in that: the hydraulic breaking hammer comprises a breaking hammer foot valve (1), a controller (3), a two-position three-way reversing electromagnetic valve (5), a ball valve (6), a hydraulic breaking hammer (4), a main control valve (7) controlled by the breaking hammer foot valve (1), and a pressure switch (2) controlled by the breaking hammer foot valve (1);
one interface of the energy storage oil cylinder (8) is connected with an input interface (E) of the two-position three-way reversing electromagnetic valve (5) through a pipeline, and the other interface of the energy storage oil cylinder (8) is connected with an oil return port (T) of the crushing hammer (4) through a pipeline; a first reversing interface (D) of the two-position three-way reversing electromagnetic valve (5) is connected with an energy accumulator combination station (9); a second reversing connector (C) of the two-position three-way reversing electromagnetic valve (5) is connected with the ball valve (6); the ball valve (6) is connected with an oil return port (T) of the hydraulic breaking hammer (4) through a pipeline;
the main control valve (7) is connected with an oil inlet (B) of the crushing hammer (4) through a pipeline; the breaking hammer foot valve (1) is connected with a pressure switch (2), and the pressure switch (2), a controller (3) and a two-position three-way reversing electromagnetic valve (5) are connected through a line; the breaking hammer foot valve (1) is connected with a main control valve (7).
2. The control device for the crushing work of the energy-saving excavator according to claim 1, wherein: the breaking hammer pedal valve (1) is provided with a pilot oil port (PP), a pilot oil inlet (P) and a pilot oil return port (T'); a pilot oil port (PP) of the breaking hammer pedal valve (1) is respectively connected with a control end of a main control valve (7) and a pressure switch (2) through pipelines;
when the breaking hammer is stepped on by a foot to pedal the valve (1), a pilot oil inlet (P) and a pilot oil port (PP) are communicated, and pilot oil enters a control end of a main control valve (7) and a pressure switch (2) through the pilot oil port (PP), so that the main control valve (7) works, and the pressure switch (2) is closed; when the breaking hammer pedal valve (1) is loosened, the pilot oil port (PP) and the pilot oil return port (T') are communicated, pilot oil flows back, the main control valve (7) stops working, and the pressure switch (2) is opened.
3. The control device for the crushing work of the energy-saving excavator according to claim 1, wherein: the pressure switch (2) is connected with an input end (L1) of the controller (3); the output end (L2) of the controller (3) is connected with an electric control device of the two-position three-way reversing electromagnetic valve (5).
4. The control device for the crushing work of the energy-saving excavator according to claim 3, wherein: the ball valve (6) is connected with an oil return port (T) of the hydraulic breaking hammer (4) through a pipeline.
5. The control device for the crushing work of the energy-saving excavator according to claim 1, wherein: the control device further comprises a movable arm hydraulic device, one interface of the movable arm hydraulic device is connected with an oil return port (T) of the hydraulic breaking hammer (4) through a pipeline, and the other interface of the movable arm hydraulic device is connected with the main control valve (7) through a pipeline.
6. The control device for the crushing work of the energy-saving excavator according to claim 5, wherein: the main control valve (7) is connected with the oil cooler (72).
7. The control device for the crushing work of the energy-saving excavator according to claim 5, wherein: the control device further comprises a boom spool (71); the main control valve (7) is connected with a movable arm valve core (71) through a pipeline, and the movable arm valve core (71) is connected with a movable arm hydraulic device through a pipeline; an oil return port (T) of the hydraulic breaking hammer (4) is connected with a movable arm valve core (71) through a pipeline; the movable arm valve core (71) is connected with a movable arm hydraulic device through a pipeline; the boom spool (71) is connected to a main pump (73).
8. The control device for the crushing work of the energy-saving excavator according to claim 1, wherein: the pressure switch (2) is arranged on the breaking hammer foot valve (1), and the breaking hammer foot valve (1) is arranged on a bottom plate of a cab of the excavator.
9. The control device for the crushing work of the energy-saving excavator according to claim 5, wherein: the movable arm hydraulic device comprises a plurality of movable arm oil cylinders (81) which are connected in parallel; one interface of each movable arm oil cylinder (81) is connected with an oil return port (T) of the hydraulic breaking hammer (4) through a pipeline, and the other interface is connected with the main control valve (7) through a pipeline.
10. The control device for the crushing work of the energy-saving excavator according to claim 1, wherein: the energy accumulator combination station (9) comprises a nitrogen cylinder (91) and a piston tank (92), the nitrogen cylinder (91) is connected with the piston tank (92) through a pipeline, and the piston tank (92) is connected with a first reversing interface (D) of the two-position three-way reversing electromagnetic valve (5) through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221249374.3U CN217557054U (en) | 2022-05-24 | 2022-05-24 | Control device suitable for crushing operation of energy-saving excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221249374.3U CN217557054U (en) | 2022-05-24 | 2022-05-24 | Control device suitable for crushing operation of energy-saving excavator |
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| Publication Number | Publication Date |
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| CN217557054U true CN217557054U (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221249374.3U Active CN217557054U (en) | 2022-05-24 | 2022-05-24 | Control device suitable for crushing operation of energy-saving excavator |
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| Country | Link |
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| CN (1) | CN217557054U (en) |
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- 2022-05-24 CN CN202221249374.3U patent/CN217557054U/en active Active
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