CN211080376U - Rotary energy-saving device of electric hydraulic excavator - Google Patents
Rotary energy-saving device of electric hydraulic excavator Download PDFInfo
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- CN211080376U CN211080376U CN201921797850.3U CN201921797850U CN211080376U CN 211080376 U CN211080376 U CN 211080376U CN 201921797850 U CN201921797850 U CN 201921797850U CN 211080376 U CN211080376 U CN 211080376U
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Abstract
The utility model discloses an electronic hydraulic shovel gyration economizer, it is connected with the generator to retrieve the motor, the generator is connected with converter looks electricity, the converter is connected with battery looks electricity, the converter is connected with motor looks electricity, the motor is connected with the main pump, the main pump is connected with oil tank A, oil tank A is connected with the rotary motor through the main valve, the main valve is connected with the controller, the both ends of rotary motor are connected with check valve A respectively, check valve B, be linked together between check valve A, the check valve B, check valve A parallel connection has overflow valve A, check valve B parallel connection has overflow valve B, the utility model discloses a retrieve the energy of hydraulic shovel when the gyration starts to stop, improve energy utilization, control when having improved the energy recovery, simple structure can open or close the recovery mode, controls steady function.
Description
Technical Field
The utility model relates to an engineering machine tool technical field, specific energy-saving device of gyration of electronic hydraulic shovel that says so.
Background
The engineering machinery is an important component of equipment industry, is generally called as engineering machinery as mechanical equipment necessary for comprehensive mechanical construction engineering required by earth and stone construction engineering, pavement construction and maintenance, mobile hoisting, loading and unloading operation and various construction engineering, and is mainly used in the fields of national defense construction engineering, traffic transportation construction, energy industry construction and production, raw material industry construction and production of mines and the like, agriculture and forestry water conservancy construction, industrial and civil construction, urban construction, environmental protection and the like.
The hydraulic excavator generates great energy waste during starting and stopping in the rotation process, hydraulic oil flows into an oil tank through an overflow valve, the hydraulic energy is converted into heat energy, the oil temperature is increased, the recovery of the energy has practical significance, the hydraulic excavator is started, the inlet pressure of a rotary motor is increased because a loading rotary mechanism does not normally rotate, when the pressure of the overflow valve is reached, the hydraulic oil flows to the oil tank through the overflow valve, the energy waste is caused, when the hydraulic excavator stops, the outlet pressure is increased under the inertia effect of the loading rotary mechanism, when the pressure of the overflow valve is reached, the hydraulic oil flows to the oil tank through the overflow valve, the energy waste is caused, and the energy consumption is increased.
Therefore design one kind and retrieve the energy of hydraulic shovel when the gyration starts to stop, improve energy utilization, the nature controlled when improving energy recovery, simple structure can open, close the device of retrieving the mode, is the problem that utility model people will solve.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electronic hydraulic shovel gyration economizer, can realize retrieving the energy of hydraulic shovel when the gyration starts the stop, improve energy utilization, the nature controlled when improving energy recovery, simple structure can open, close the function of retrieving the mode.
The utility model provides a technical scheme that its technical problem adopted is: a rotary energy-saving device of an electric hydraulic excavator comprises a recovery motor, a generator, a frequency converter, a battery, an electric motor, a main pump, an oil tank A, a controller, a main valve, an oil tank B, a two-position four-way reversing valve A, a two-position two-way electromagnetic valve A, a one-way valve A, an overflow valve A, an oil tank C, an overflow valve B, a rotary motor, a one-way valve B, a two-position two-way electromagnetic valve B, a two-position four-way reversing valve B and an oil tank D, wherein the recovery motor is connected with the generator, the generator is electrically connected with the frequency converter, the frequency converter is electrically connected with the battery, the frequency converter is electrically connected with the electric motor, the electric motor is connected with the main pump, the main pump is connected with the oil tank A, the oil tank A is connected with the rotary motor through the main valve, the main, the check valve A and the check valve B are communicated with each other, the check valve A is connected with an overflow valve A in parallel, the check valve B is connected with an overflow valve B in parallel, the overflow valve A and the overflow valve B are communicated with each other, a pipeline communicating the overflow valve A and the overflow valve B is communicated with a pipeline communicating the check valve A and the check valve B through a pipeline, the middle part of the pipeline is connected with an oil tank C, the left end of the check valve A is connected with a two-position two-way electromagnetic valve A, the right end of the check valve B is connected with a two-position two-way electromagnetic valve B, the two-position two-way electromagnetic valve A is connected with a two-position four-way reversing valve A, the two-position two-way electromagnetic valve B is connected with a two-position four-way reversing valve B, joints at the left end and the right end of the two-position, and the joint at the lower end of the two-position four-way reversing valve B is respectively connected with the oil tank D and the recovery motor in parallel.
Further, the generator is electrically connected with the recovery motor.
The utility model has the advantages that:
1. the utility model discloses retrieve the energy of hydraulic shovel when the gyration starts to stop, change its hydraulic energy into the electric energy storage with in the battery, improve energy utilization, in original gyration hydraulic system, add two-position two-way electromagnetic directional valve, two-position four-way reversing valve and retrieve the motor, through adjusting the spring pressure on the two-position four-way reversing valve, control when having improved energy recuperation.
2. The utility model discloses simple structure changes little to former system, can open or close the recovery mode according to user's needs, relies on exit pressure to decide two-position four-way valve opening size, when the last car gyration start-up back when the steady operation with when stopping the back, both sides pressure differential reduces gradually, makes to control steadily.
Drawings
Fig. 1 is a hydraulic schematic diagram of the present invention.
Description of reference numerals: 1-a recovery motor; 2-a generator; 3-a frequency converter; 4-a battery; 5-an electric motor; 6-main pump; 7-oil tank A; 8-a controller; 9-a main valve; 10-oil tank B; 11-a two-position four-way reversing valve A; 12-a two-position two-way solenoid valve A; 13-one-way valve a; 14-relief valve a; 15-tank C; 16-relief valve B; 17-a rotary motor; 18-one-way valve B; 19-a two-position two-way solenoid valve B; 20-two-position four-way change valve B; 21-oil tank D.
Detailed Description
The invention will be further described with reference to specific examples, which are intended to be illustrative only and not to limit the scope of the invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and such equivalents also fall within the scope of the appended claims.
The first embodiment is as follows:
referring to fig. 1, the hydraulic principle diagram of the present invention includes a recovery motor, a generator, a frequency converter, a battery, an electric motor, a main pump, an oil tank a, a controller, a main valve, an oil tank B, a two-position four-way directional valve a, a two-position two-way solenoid valve a, a check valve a, an overflow valve a, an oil tank C, an overflow valve B, a rotary motor, a check valve B, a two-position two-way solenoid valve B, a two-position four-way directional valve B, and an oil tank D, wherein the recovery motor is connected to the generator, the generator is electrically connected to the frequency converter, the frequency converter is electrically connected to the battery, the frequency converter is electrically connected to the electric motor, the electric motor is connected to the main pump, the main pump is connected to the oil tank a, the oil tank a is connected to the rotary motor through the main valve, the main valve is connected, the check valve A is connected with an overflow valve A in parallel, the check valve B is connected with an overflow valve B in parallel, the overflow valve A and the overflow valve B are communicated with each other, a pipeline communicating the overflow valve A and the overflow valve B is communicated with a pipeline communicating the check valve A and the check valve B through a pipeline, the middle part of the pipeline is connected with an oil tank C, the left end of the check valve A is connected with a two-position two-way electromagnetic valve A, the right end of the check valve B is connected with a two-position two-way electromagnetic valve B, the two-position two-way electromagnetic valve A is connected with a two-position four-way reversing valve A, the joints at the right two ends are respectively connected with the joints at the left and right two ends of the two-position four-way reversing valve B, the joints at the lower end are respectively connected with the oil tank B and the recovery motor in parallel, and the joints at the lower end of the two-position four-way reversing valve B are respectively connected with the oil tank D and the recovery motor in parallel.
The generator is electrically connected with the recovery motor.
When a user starts the energy recovery mode of the utility model, the two-position two-way electromagnetic valve A and the two-position two-way electromagnetic valve B are electrified, the valve core of the two-position two-way electromagnetic valve A moves to the right, the valve core of the two-position two-way electromagnetic valve B moves to the left, when the rotary motor is started (assuming that oil enters the port A and oil returns the port B), because the upper vehicle is not normally operated, the pressure at the position A is greater than that at the position B, when the pressure difference between the two positions is greater than the spring adjusting pressure, the valve core of the two-position four-way reversing valve A moves rightwards, the valve core of the two-position four-way reversing valve B moves rightwards, part of hydraulic oil passes through the valve core of the two-position two-way electromagnetic valve A and the valve core of the two-position four-way reversing valve A from the port A to drive the recovery motor to run with the generator, the hydraulic energy is converted into electric energy to be recovered, the hydraulic oil enters the oil tank through the valve core of the two-position four-way reversing, when the pressure of the port A exceeds the overflow pressure of the overflow valve A, part of the hydraulic oil flows into the oil tank through the overflow valve A.
When the rotary motor is braked, the boarding rotary mechanism continues to rotate under the action of inertia force, so that the pressure at the position B is increased, the valve core of the two-position four-way reversing valve B and the valve core of the two-position four-way reversing valve A move leftwards, hydraulic oil flows in from the valve core of the two-position two-way electromagnetic valve B and the valve core of the two-position four-way reversing valve B, the recovery motor drives the generator to recover energy, the hydraulic oil flows back to the oil tank through the two-position four-way reversing valve A, and when oil enters the position B and oil exits from the position A.
The utility model discloses retrieve the energy of hydraulic shovel when the gyration is started to stop, it stores in the battery to change its hydraulic energy into the electric energy, improve energy utilization, in original gyration hydraulic system, add two-position two-way electromagnetic directional valve, two-position four-way reversing valve and recovery motor, through adjusting the spring pressure on the two-position four-way reversing valve, the nature controlled when having improved energy recovery, moreover, the steam generator is simple in structure, it is not very big to former system change, can be according to user's needs, can open or close the recovery mode, rely on exit pressure to decide two-position four-way valve opening size, when the steady operation after the gyration that starts of getting on the bus with when stopping, both sides pressure differential reduces gradually, the messenger controls steadily.
Claims (2)
1. The utility model provides an electronic hydraulic shovel gyration economizer which characterized in that: the recovery system comprises a recovery motor, a generator, a frequency converter, a battery, an electric motor, a main pump, an oil tank A, a controller, a main valve, an oil tank B, a two-position four-way reversing valve A, a two-position two-way electromagnetic valve A, a one-way valve A, an overflow valve A, an oil tank C, an overflow valve B, a rotary motor, a one-way valve B, a two-position two-way electromagnetic valve B, a two-position four-way reversing valve B and an oil tank D, wherein the recovery motor is connected with the generator, the generator is electrically connected with the frequency converter, the frequency converter is electrically connected with the battery, the frequency converter is electrically connected with the electric motor, the electric motor is connected with the main pump, the main pump is connected with the oil tank A, the oil tank A is connected with the rotary motor through the main valve, the main valve is connected with the controller, two ends, the recovery device comprises a check valve A, an overflow valve B, an oil tank C, a two-position two-way electromagnetic valve A, a two-position two-way electromagnetic valve B, a two-position four-way reversing valve A, a two-position four-way reversing valve B, an oil tank D, an oil tank C, a recovery motor, an overflow valve A, an overflow valve B, an oil tank D, an oil tank C, an oil tank B, an oil tank C, an oil tank, The recovery motors are connected in parallel.
2. The slewing energy-saving device of the electric hydraulic excavator as claimed in claim 1, wherein: the generator is electrically connected with the recovery motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921797850.3U CN211080376U (en) | 2019-10-24 | 2019-10-24 | Rotary energy-saving device of electric hydraulic excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921797850.3U CN211080376U (en) | 2019-10-24 | 2019-10-24 | Rotary energy-saving device of electric hydraulic excavator |
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| CN211080376U true CN211080376U (en) | 2020-07-24 |
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| CN201921797850.3U Active CN211080376U (en) | 2019-10-24 | 2019-10-24 | Rotary energy-saving device of electric hydraulic excavator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747934A (en) * | 2019-10-24 | 2020-02-04 | 山重建机有限公司 | Rotary energy-saving device of electric hydraulic excavator |
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- 2019-10-24 CN CN201921797850.3U patent/CN211080376U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110747934A (en) * | 2019-10-24 | 2020-02-04 | 山重建机有限公司 | Rotary energy-saving device of electric hydraulic excavator |
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