CN210946937U - Energy-saving control system of excavator - Google Patents
Energy-saving control system of excavator Download PDFInfo
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- CN210946937U CN210946937U CN201921803704.7U CN201921803704U CN210946937U CN 210946937 U CN210946937 U CN 210946937U CN 201921803704 U CN201921803704 U CN 201921803704U CN 210946937 U CN210946937 U CN 210946937U
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- 239000003921 oil Substances 0.000 claims abstract description 104
- 230000009471 action Effects 0.000 claims abstract description 25
- 239000010727 cylinder oil Substances 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 18
- 230000008859 change Effects 0.000 claims description 9
- 230000001133 acceleration Effects 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 27
- 230000000694 effects Effects 0.000 abstract description 7
- 230000005484 gravity Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 15
- 238000009412 basement excavation Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
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Abstract
The utility model relates to an excavator energy-saving control system that movable arm afterbody is equipped with gravity and offsets counter weight. The hydraulic energy-saving adjusting device comprises a movable arm oil cylinder unloading control valve and a counterweight position adjusting oil cylinder control valve, wherein the movable arm oil cylinder unloading control valve is connected with an action arm oil cylinder oil way, the output end of the counterweight position adjusting oil cylinder control valve is connected with a counterweight position adjusting oil cylinder, the input end of the counterweight position adjusting oil cylinder control valve is connected with an excavator hydraulic main pressure oil way and an oil return way, and the control signal output end of the controller is electrically connected with the movable arm oil cylinder unloading control valve and the counterweight position adjusting oil cylinder control valve. The utility model discloses the security is high, and the maintenance cost is low, easily realizes automated control, can satisfy the energy-conserving demand of the full operating mode that swing arm mechanism promoted and descend, and energy-conserving effect is obvious.
Description
Technical Field
The utility model relates to an energy-conserving excavator specifically is an excavator energy-saving control system that movable arm afterbody is equipped with gravity and offsets counter weight.
Background
The excavator is an important constructional engineering machine, and is widely applied to various engineering projects such as engineering construction, mine excavation and the like, when the excavator works, the excavator is arranged for preventing the excavator from overturning and increasing the stability of the whole excavator, the counterweight used for the stability of the whole excavator is arranged at the tail part of a rotary platform of the excavator, and the application purpose of the current counterweight of the excavator is single and is only set for the purpose of improving the stability and the safety of the excavator, for example, the engineering mechanical equipment, the movable counterweight system and the control method disclosed in CN 103046606B, although the counterweight position can be adjusted, the novel purpose of practical use is to improve the stability and the safety of the working of the engineering mechanical equipment by adjusting the counterweight position.
When the excavator works, the movable arm mechanism needs to be lifted and lowered continuously to realize working conditions of excavation, unloading and the like. The excavator's actuator is very massive in its own right, which requires a lot of extra energy to overcome the extra gravity, and thus a lot of energy is consumed. In order to reduce such energy consumption, a novel excavator having an energy-saving counterweight at the tail of a boom has been known in the prior art, and the energy-saving counterweight of the novel excavator is used for the purpose of offsetting the dead weight of the boom mechanism to generate excessive energy consumption, but a specific energy-saving control system is not disclosed in the excavator.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an excavator energy-saving control system, through the control to energy-conserving counter weight of excavator, swing arm mechanism, realize the best energy-conserving effect of excavator.
The utility model provides a technical scheme that its technique is that the problem adopts is:
the excavator energy-saving control system comprises an excavator state detection assembly, a controller and a hydraulic energy-saving adjusting device, wherein the excavator state detection assembly is used for detecting the information of the working state of an excavator and inputting the obtained detection information into the controller, and the controller performs energy-saving control on the hydraulic energy-saving adjusting device according to the detection information; the hydraulic energy-saving adjusting device comprises a movable arm oil cylinder unloading control valve and a counterweight position adjusting oil cylinder control valve, wherein the movable arm oil cylinder unloading control valve is connected with an action arm oil cylinder oil way, the output end of the counterweight position adjusting oil cylinder control valve is connected with a counterweight position adjusting oil cylinder, the input end of the counterweight position adjusting oil cylinder control valve is connected with an excavator hydraulic main pressure oil way and an oil return way, and the control signal output end of a controller is electrically connected with the movable arm oil cylinder unloading control valve and the counterweight position adjusting oil cylinder control valve.
Adopt above-mentioned technical scheme the utility model discloses, compare with prior art, beneficial effect is:
the safety is high, the maintenance cost is low, the automatic control is easy to realize, the energy-saving requirements of the full working condition of lifting and descending of the movable arm mechanism can be met, and the energy-saving effect is obvious.
Preferably, the present invention further provides:
the excavator state detection assembly comprises an inclination angle sensor and a displacement sensor, and the inclination angle sensor and the displacement sensor are used for detecting an excavator body inclination angle, a working arm inclination angle and an energy-saving counterweight position coordinate.
The excavator state detection assembly comprises a pressure sensor, and the pressure sensor is used for detecting the pressure of an excavator system.
The excavator state detection assembly comprises a speed sensor, and the speed sensor is used for detecting the position change speed and acceleration of the excavator working arm and the energy-saving counterweight.
The hydraulic energy-saving adjusting device also comprises a movable arm pilot control electromagnetic valve which is connected in a movable arm pilot control oil way of the excavator and is used for controlling the pilot control pressure of the movable arm of the excavator by a controller.
The unloading control valve of the movable arm oil cylinder in the hydraulic energy-saving adjusting device is a pilot type electromagnetic valve, and the control valve of the counterweight position adjusting oil cylinder is a pilot type electromagnetic valve.
The hydraulic energy-saving adjusting device further comprises an energy-saving counterweight pilot electromagnetic valve which is connected in a counterweight position adjusting oil cylinder control valve pilot control oil way and used for the controller to more stably and accurately control the excavator counterweight position adjusting oil cylinder control valve.
The hydraulic energy-saving adjusting device further comprises a movable arm oil cylinder unloading pilot electromagnetic valve which is connected in a pilot control oil path of a movable arm oil cylinder unloading control valve and used for controlling the movable arm oil cylinder unloading control valve of the excavator more stably and accurately by a controller.
The hydraulic energy-saving adjusting device also comprises a throttle valve, wherein the throttle valve is connected in series in a control oil path of the actuating arm oil cylinder and is used for limiting the maximum movement speed of the actuating arm oil cylinder and increasing the working back pressure when the actuating arm oil cylinder is unloaded.
The hydraulic energy-saving adjusting device also comprises an explosion-proof valve, wherein the explosion-proof valve is connected with the oil cylinder oil path of the actuating arm and the oil path of the counterweight position adjusting oil cylinder and is used for safety control after the working oil path of the excavator bursts.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a schematic diagram of a hydraulic control system according to embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of embodiment 2 of the present invention;
fig. 4 is a schematic diagram of a hydraulic control system according to embodiment 2 of the present invention;
FIG. 5 is a schematic diagram of the explosion-proof valve of the present invention;
fig. 6 is a schematic diagram of another hydraulic control system according to embodiment 2 of the present invention;
fig. 7 is a schematic structural diagram of embodiment 3 of the present invention;
fig. 8 is a schematic diagram of a hydraulic control system according to embodiment 3 of the present invention;
fig. 9 is a schematic view of the control principle of the proportional pressure reducing solenoid valve applied in embodiment 3 of the present invention;
fig. 10 is a schematic structural view of embodiment 4 of the present invention;
fig. 11 is a schematic diagram of a hydraulic control system according to embodiment 4 of the present invention;
fig. 12 is a schematic diagram of another hydraulic control system according to embodiment 4 of the present invention;
FIG. 13 is a schematic view of an excavator with a gravity-counteracting counterweight at the boom tail;
in the figure: 1-a hydraulic distributor; 2-a boom cylinder unloading control valve; 3-counterweight position adjusting oil cylinder control valve; 4-an overload valve; 5-an action arm oil cylinder; 6-counterweight position adjusting oil cylinder; 7-a boom pilot control solenoid valve; 8-an action arm pilot control valve; 9-a pilot pump; 10-an explosion-proof valve; 11-a throttle valve; 12-a small arm oil cylinder; 13-a boom forearm; 14-a bucket cylinder; 15-a bucket; 16-boom big arm; 17-a cab; 18-energy-saving counterweight; 19-a slide; 20-a tilt sensor; 21-a displacement sensor; 22-a counterweight support arm; 23-counterweight support arm cylinder; 24-a running gear; 25-a vehicle body; 26-a controller; 27-a pressure sensor; 28-speed sensor; 29-a boom mechanism support arm cylinder; 30-a boom mechanism support arm; 31-action arm king pin shaft; 32-energy-saving counterweight pilot electromagnetic valve; 33-boom cylinder unloading pilot solenoid valve.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
For better details and understanding of the embodiment, the excavator shown in fig. 13 is taken as an example for explanation. In the figure, the actuator comprises a large arm 16 of the actuator, a small arm 13 of the actuator and a bucket 15, the energy-saving counterweight mechanism comprises an energy-saving counterweight 18, a counterweight position adjusting oil cylinder 6 and the like, the energy-saving counterweight mechanism and the actuator form a lever type structure by taking an actuator arm main pin shaft 31 as a fulcrum, the position of the energy-saving counterweight 18 is adjusted to balance the weight of the actuator under different working conditions of the actuator, and the position of the energy-saving counterweight 18 is adjusted by the counterweight position adjusting oil cylinder 6 to achieve the purpose of saving energy of the excavator.
Example 1:
referring to fig. 1, the excavator energy-saving control system is composed of an excavator state detection assembly, a controller and a hydraulic energy-saving adjusting device, wherein the excavator state detection assembly comprises an inclination angle sensor 20 and a displacement sensor 21, the hydraulic energy-saving adjusting device comprises a movable arm cylinder unloading control valve 2 and a counterweight position adjusting cylinder control valve 3, the inclination angle sensor 20 and the displacement sensor 21 are connected with the input end of a controller 26, and the movable arm cylinder unloading control valve 2 and the counterweight position adjusting cylinder control valve 3 are connected with the output end of the controller 26.
Fig. 2 is a schematic diagram of a hydraulic control system, which includes an excavator hydraulic distributor 1, a boom cylinder unloading control valve 2, a counterweight position adjusting cylinder control valve 3, an overload valve 4, an action arm cylinder 5, and a counterweight position adjusting cylinder 6, wherein the boom cylinder unloading control valve 2 is connected between an action arm hydraulic control interface of the excavator hydraulic distributor 1 and the action arm cylinder 5, and the boom cylinder unloading control valve 2 is a two-position five-way electromagnetic valve. In order to increase the expandability of the working purpose of a conventional excavator, the hydraulic distributor 1 is provided with an interface capable of providing main pressure oil and return oil for spare accessories of the excavator. In the figure, the input end of a counterweight position adjusting oil cylinder control valve 3 is connected with a spare accessory hydraulic main pressure interface and an oil return port of an excavator hydraulic distributor 1, the output end of the counterweight position adjusting oil cylinder control valve 3 is connected with a counterweight position adjusting oil cylinder 6, a three-position four-way electromagnetic valve is adopted by the counterweight position adjusting oil cylinder control valve 3, and an overload valve 4 is connected with an oil cylinder oil way in parallel to prevent overload. Of course, for the excavator with the hydraulic distributor 1 having the backup direction changing valve, the counterweight position adjusting cylinder control valve 3 may change the direction of the counterweight position adjusting cylinder 6 by using the backup direction changing valve of the hydraulic distributor 1, and the controller 26 may change the direction of the backup direction changing valve of the hydraulic distributor 1 by using the hydraulic solenoid valve.
Referring to fig. 13, a vehicle body 25 is provided with an inclination sensor 20 for sensing the inclination of the vehicle body, an actuator support arm 30 is provided with an inclination sensor 20 for sensing the inclination of the actuator support arm 30, each actuator arm of the actuator is also provided with an inclination sensor 20 for sensing the inclination of each actuator arm of the actuator, a counterweight support arm 22 or an energy-saving counterweight 18 is provided with an inclination sensor 20 for sensing the inclination of the energy-saving counterweight 18, and a controller 26 obtains the angular attitude and the position height of the current actuator arm and the energy-saving counterweight 18 of the excavator relative to the vehicle body 25 according to the inclination data of the vehicle body 25, the actuator support arm 30, each actuator arm, and the energy-saving counterweight 18, wherein the inclination sensor 20 is used for sensing the inclination of each installation part. Of course, an angular displacement sensor can be applied to sense the relative included angle of each part. However, the tilt sensor 20 is preferable because the angle displacement sensor cannot sense the inclination of the vehicle body 25, and the tilt sensor 20 is flexible and has advantages of easy installation and long service life.
The displacement sensor 21 is installed on the energy-saving counterweight mechanism and used for sensing the position of the energy-saving counterweight 18, the displacement data of the energy-saving counterweight is input into the controller 26, the controller 26 obtains the moving distance and the moving speed of the energy-saving counterweight 18 according to the displacement data, and the actual accurate coordinate position of the energy-saving counterweight 18 is obtained by matching with the inclination angle data of the energy-saving counterweight 18.
The controller 26 controls the boom cylinder unloading control valve 2 and the counterweight position adjusting cylinder control valve 3 according to the obtained result, so as to achieve the purpose of energy saving control, for example, when the excavator performs the boom lifting operation, the controller 26 determines that the boom 16 of the excavator is currently in the lifting condition according to the continuous change of the signal of the boom tilt sensor 20, and then obtains the optimal position of the energy saving counterweight 18 according to the angular posture of each arm of the boom, the controller 26 checks the difference between the actual position and the optimal position of the energy saving counterweight 18, the energy saving counterweight 18 reaches the optimal position through the control of the counterweight position adjusting cylinder control valve 3, the controller 26 performs unloading control on the actuating arm cylinder 5 through the boom cylinder unloading control valve 2, because of the lever type structures of the boom mechanism and the energy saving counterweight mechanism, and because of the weight and the position of the energy saving counterweight 18, the movable arm mechanism is pressed upwards by the energy-saving counterweight mechanism, so that the lifting action of the movable arm 16 is realized; when the excavator movable arm mechanism is in descending action, the controller 26 judges that the excavator movable arm large arm 16 is in descending working condition currently through each tilt angle sensor 20, according to the angle posture of each arm of the movable arm mechanism, the optimal position of the energy-saving counterweight 18 is obtained, the controller 26 checks the difference between the actual position of the energy-saving counterweight 18 and the optimal position, the energy-saving counterweight 18 reaches the optimal position through the control of the counterweight position adjusting cylinder control valve 3, meanwhile, the unloading control is carried out on the action arm cylinder 5 through the movable arm cylinder unloading control valve 2, the movable arm mechanism descends due to the action of gravity, due to the lever type structure of the movable arm mechanism and the energy-saving counterweight mechanism, the descending speed of the movable arm large arm 16 is restrained by the energy-saving counterweight mechanism, and the descending action of the movable arm large arm 16.
Example 2:
referring to fig. 3, the energy-saving control system of the excavator comprises an inclination angle sensor 20, a displacement sensor 21, a pressure sensor 27, a controller 26, a boom cylinder unloading control valve 2 and a counterweight position adjusting cylinder control valve 3, wherein the inclination angle sensor 20, the displacement sensor 21 and the pressure sensor 27 are connected with the input end of the controller 26, and the boom cylinder unloading control valve 2 and the counterweight position adjusting cylinder control valve 3 are connected with the output end of the controller 26.
Fig. 4 is a schematic diagram of a hydraulic control system of this embodiment, in which a throttle valve 11 is added to an oil return line of a boom cylinder unloading control valve 2 based on embodiment 1, and the throttle valve 11 can increase an oil return back pressure of an arm cylinder 5, and when the arm cylinder 5 is switched from an unloading state to a normal operating state, the operation is more stable, and at the same time, the throttle valve 11 can limit a maximum movement speed of the arm cylinder 5 after unloading, and increase safety during operation; the pressure sensor 27 is installed in the hydraulic system of the excavator to sense the pressure of each hydraulic system of the excavator, in this embodiment, the pressure sensor 27 is installed in the pipeline of the actuating arm cylinder 5 and is used for sensing the pressure at two ends of the cylinder of the actuating arm cylinder 5, the controller 26 obtains the load of the actuating arm according to the pressure signal, the pressure sensor 27 is also installed in the pilot oil circuit controlled by each actuating arm of the excavator to sense the pilot control pressure of each actuating arm, the controller 26 can accurately sense the current operating state of the excavator according to the pilot control pressure of each actuating arm, so as to be convenient for making quick response to the operation change of the movable arm mechanism, the controller 26 can more accurately obtain the ideal position of the energy-saving counterweight 18 according to the sensing data of each sensor, and judge when the actuating arm cylinder 5 is required to unload or stop unloading; because the excavator often works in a heavy load state, the oil pipeline can burst, in order to prevent the oil cylinder pipeline from bursting accidentally to generate potential safety hazard, the explosion-proof valve 10 is installed in the oil cylinder pipeline, if the pipeline bursts, the oil cylinder is locked by closing the oil way through the explosion-proof valve 10, and the oil cylinder is prevented from being uncontrolled due to the burst of the pipeline, and fig. 5 is a schematic diagram of the explosion-proof valve 10. The hydraulic system of the embodiment is safer, higher in control precision and more stable in work.
Referring to fig. 6, the boom cylinder unloading control valve 2 is a schematic diagram of a two-position four-way solenoid valve, an input end of the boom cylinder unloading control valve is connected with a hydraulic pipeline of the boom cylinder 5, an output end of the boom cylinder unloading control valve is connected with return oil of a hydraulic system of the excavator through a throttle valve, the system can also perform unloading control on the boom cylinder 5, and the throttle valve also prevents the boom cylinder 5 from unloading to affect other actions during compound actions of the excavator.
Example 3:
referring to fig. 7, on the basis of embodiment 2, the output end of the controller 26 is connected to the boom cylinder unloading control valve 2, the counterweight position adjusting cylinder control valve 3, and the boom pilot control solenoid valve 7.
Fig. 8 is a schematic diagram of the hydraulic control system according to the embodiment, in which the boom cylinder unloading control valve 2 and the counterweight position adjusting cylinder control valve 3 are pilot-operated solenoid valves that can control a larger hydraulic flow with a smaller current, and are particularly suitable for an excavator in such a high-pressure large-flow environment; in the system, a boom pilot control solenoid valve 7 is added, the boom pilot control solenoid valve 7 is connected to a boom pilot control oil path of the excavator, in fig. 8, the boom pilot control solenoid valve 7 is connected to an action arm pilot control valve 8 and an action arm pilot control oil path of a hydraulic distributor 1, the boom pilot control solenoid valve 7 adopts a two-position four-way solenoid valve, the boom pilot control solenoid valve 7 is controlled by a controller 26 to cut off the action arm pilot control oil path when the action arm oil cylinder 5 is unloaded, an action arm control valve rod in the hydraulic distributor 1 is in a middle position, energy loss of hydraulic pressure is effectively reduced when the action arm oil cylinder 5 is unloaded, when the action pilot pressure detected by the controller 26 through a pressure sensor 27 and the pressure of the excavator system, and when the action arm needs larger power, the controller 26 controls the boom pilot control solenoid valve 7 to be connected to the pilot control, meanwhile, the movable arm oil cylinder unloading control valve 2 is communicated with an oil path between the hydraulic distributor 1 and the action arm oil cylinder 5, so that the action arm oil cylinder 5 is in a working state of providing normal power, the structure more effectively reduces the energy loss of the excavator, and meanwhile, the automatic control of the energy conservation of the excavator is convenient to realize; of course, the boom pilot control solenoid valve 7 may be a proportional pressure reducing solenoid valve, and the controller 26 may control the pilot pressure of the operating arm more smoothly and accurately.
Referring to fig. 9, in this embodiment, the control end of the boom cylinder unloading control valve 2 is connected to the boom cylinder unloading pilot solenoid valve 33, the control end of the counterweight position adjusting cylinder control valve 3 is connected to the energy saving counterweight pilot solenoid valve 32, and the boom cylinder unloading pilot solenoid valve 33 and the energy saving counterweight pilot solenoid valve 32 are preferably proportional pressure reducing solenoid valves, so that the controller 26 can control the boom cylinder unloading control valve 2 and the counterweight position adjusting cylinder control valve 3 of the excavator more stably and accurately.
In the case of an excavator with an electric control handle, the excavator of the type that controls the operation state of the hydraulic distributor 1 is provided with an arm control pilot proportional pressure reducing solenoid valve, so that the controller 26 can connect and control the arm control pilot proportional pressure reducing solenoid valve provided in the excavator itself, instead of the boom pilot control solenoid valve 7 in this embodiment.
Example 4:
referring to fig. 10, in this embodiment, a speed sensor 28 is added to an input end of the controller 26, and the speed sensor 28 is installed in each of the boom mechanism and the energy-saving counterweight mechanism, so that the controller 26 can accurately monitor the movement speed of each of the boom and the energy-saving counterweight mechanism, and can regulate and control the hydraulic energy-saving control system more accurately, and meanwhile, in this embodiment, the controller 26 can also achieve the purpose of controlling the boom cylinder unloading control valve 2 and the boom pilot control solenoid valve 7 simultaneously through a single control of the boom pilot control solenoid valve 7, and the circuit control is simplified compared with embodiment 3, and the control effect of embodiment 3 is achieved.
As shown in fig. 11, in the hydraulic control system of this embodiment, the boom pilot control solenoid valve 7 is a two-position six-way solenoid valve, when the controller 26 controls the boom pilot control solenoid valve 7 to be energized to cut off the arm pilot control oil path, one of the pilot oils directly controls the boom cylinder unloading control valve 2 to unload the arm cylinder 5, and when the controller 26 controls the boom pilot control solenoid valve 7 to be de-energized, the boom cylinder unloading control valve 2 is returned, and the arm cylinder 5 is in the operating state of supplying normal power, which is simplified as compared with embodiment 3, and achieves the control effect of embodiment 3.
Similarly, the controller 26 can also control the boom cylinder unloading control valve 2 and the boom pilot control solenoid valve 7 by performing single control on the boom cylinder unloading control valve 2, and referring to fig. 12, the boom cylinder unloading control valve 2 adopts a two-position seven-way solenoid valve, and the boom cylinder unloading control valve 2 is controlled by the controller 26 while the boom pilot control valve 7 is controlled, and this control system also reduces the output of the controller 26, and achieves the control effect of embodiment 3.
It should be noted that, the displacement sensor 21 can obtain the position of the object to be measured through the displacement information of the object, and certainly, the distance measuring sensor can also make a position judgment on the distance change of the object to obtain the position of the object to be measured, and the effect is the same, but the displacement sensor has high precision, strong environmental adaptability, fast response time, and little influence by environmental factors, and the displacement sensor should be preferred, and meanwhile, the controller 26 can obtain the speed change information of the actuator and the energy-saving counterweight mechanism through the detection information change speed of the detection target by the tilt sensor 20 and the displacement sensor 21, so that under the condition of low requirement, the tilt sensor 20 and the displacement sensor 21 can replace the function of the speed sensor to a certain extent.
The utility model discloses in, the preferred proportion decompression solenoid valve of guide's formula solenoid valve, controller 26 of being convenient for carries out more steady accurate control to it.
The utility model discloses in, if can carry out new integrated development with excavator hydraulic pressure distributor, can be with movable arm hydro-cylinder uninstallation control valve 2 integration in excavator hydraulic pressure distributor's inside, proportion pressure reducing solenoid valve is connected to the control end, carries out more accurate steady control to it by controller 26, and this kind of structure is compacter, can further reduce hydraulic pressure loss and fault rate.
The utility model discloses still can be applied to the excavator of many movable arms multisection ability counter weight mechanism to foretell control form carries out energy-conserving control to other positions movable arm and energy-conserving counter weight mechanism.
It should be noted that, in order to increase the function expansion of the excavator, a backup valve is directly reserved inside the hydraulic distributor, and a control interface and an output interface of the hydraulic distributor are reserved externally, so the boom cylinder unloading control valve 2 or the counterweight position adjusting cylinder control valve 3 can both utilize the backup valve provided by the hydraulic distributor, and the controller 26 controls the backup valve of the hydraulic distributor by controlling an external electromagnetic valve, thereby achieving the purpose of energy saving control of the excavator.
The above description is only a preferred and practical embodiment of the present invention, and not intended to limit the scope of the present invention, and all structural equivalents made by using the contents of the specification and drawings are included in the scope of the present invention.
Claims (10)
1. The utility model provides an excavator energy-saving control system, includes excavator state detection subassembly, controller, the energy-conserving adjusting device of hydraulic pressure, and excavator state detection subassembly is used for detecting excavator operating condition's information to the detection information input controller that will acquire, the controller carries out energy-conserving control, its characterized in that to the energy-conserving adjusting device of hydraulic pressure according to detection information: the hydraulic energy-saving adjusting device comprises a movable arm oil cylinder unloading control valve and a counterweight position adjusting oil cylinder control valve, wherein the movable arm oil cylinder unloading control valve is connected with an action arm oil cylinder oil way, the output end of the counterweight position adjusting oil cylinder control valve is connected with a counterweight position adjusting oil cylinder, the input end of the counterweight position adjusting oil cylinder control valve is connected with an excavator hydraulic main pressure oil way and an oil return way, and the control signal output end of a controller is electrically connected with the movable arm oil cylinder unloading control valve and the counterweight position adjusting oil cylinder control valve.
2. The energy-saving control system of the excavator according to claim 1, wherein: the excavator state detection assembly comprises an inclination angle sensor and a displacement sensor, and the inclination angle sensor and the displacement sensor are used for detecting an excavator body inclination angle, a working arm inclination angle and an energy-saving counterweight position coordinate.
3. The energy-saving control system of the excavator according to claim 1, wherein: the excavator state detection assembly comprises a pressure sensor, and the pressure sensor is used for detecting the pressure of an excavator system.
4. The energy-saving control system of the excavator according to claim 1, wherein: the excavator state detection assembly comprises a speed sensor, and the speed sensor is used for detecting the position change speed and acceleration of the excavator working arm and the energy-saving counterweight.
5. The energy-saving control system of the excavator according to claim 1, wherein: the hydraulic energy-saving adjusting device also comprises a movable arm pilot control electromagnetic valve which is connected in a movable arm pilot control oil way of the excavator and is used for controlling the pilot control pressure of the movable arm of the excavator by a controller.
6. The energy-saving control system of the excavator according to claim 1, wherein: the unloading control valve of the movable arm oil cylinder in the hydraulic energy-saving adjusting device is a pilot type electromagnetic valve, and the control valve of the counterweight position adjusting oil cylinder is a pilot type electromagnetic valve.
7. The energy-saving control system of the excavator according to claim 1, wherein: the hydraulic energy-saving adjusting device further comprises an energy-saving counterweight pilot electromagnetic valve which is connected in a counterweight position adjusting oil cylinder control valve pilot control oil way and used for the controller to more stably and accurately control the excavator counterweight position adjusting oil cylinder control valve.
8. The energy-saving control system of the excavator according to claim 1, wherein: the hydraulic energy-saving adjusting device further comprises a movable arm oil cylinder unloading pilot electromagnetic valve which is connected in a pilot control oil path of a movable arm oil cylinder unloading control valve and used for controlling the movable arm oil cylinder unloading control valve of the excavator more stably and accurately by a controller.
9. The energy-saving control system of the excavator according to claim 1, wherein: the hydraulic energy-saving adjusting device also comprises a throttle valve, wherein the throttle valve is connected in series in a control oil path of the actuating arm oil cylinder and is used for limiting the maximum movement speed of the actuating arm oil cylinder and increasing the working back pressure when the actuating arm oil cylinder is unloaded.
10. The energy-saving control system of the excavator according to claim 1, wherein: the hydraulic energy-saving adjusting device also comprises an explosion-proof valve, wherein the explosion-proof valve is connected with the oil cylinder oil path of the actuating arm and the oil path of the counterweight position adjusting oil cylinder and is used for safety control after the working oil path of the excavator bursts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921803704.7U CN210946937U (en) | 2019-10-25 | 2019-10-25 | Energy-saving control system of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921803704.7U CN210946937U (en) | 2019-10-25 | 2019-10-25 | Energy-saving control system of excavator |
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| Publication Number | Publication Date |
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| CN210946937U true CN210946937U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921803704.7U Withdrawn - After Issue CN210946937U (en) | 2019-10-25 | 2019-10-25 | Energy-saving control system of excavator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110616758A (en) * | 2019-10-25 | 2019-12-27 | 董志强 | Energy-saving control system of excavator |
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2019
- 2019-10-25 CN CN201921803704.7U patent/CN210946937U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110616758A (en) * | 2019-10-25 | 2019-12-27 | 董志强 | Energy-saving control system of excavator |
| CN110616758B (en) * | 2019-10-25 | 2024-03-19 | 董志强 | Energy-saving control system of excavator |
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