CN112064711A - Excavator remote control system, excavator remote control device and excavator - Google Patents
Excavator remote control system, excavator remote control device and excavator Download PDFInfo
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- CN112064711A CN112064711A CN202010850545.7A CN202010850545A CN112064711A CN 112064711 A CN112064711 A CN 112064711A CN 202010850545 A CN202010850545 A CN 202010850545A CN 112064711 A CN112064711 A CN 112064711A
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- excavator
- remote control
- main controller
- control system
- valve group
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
Abstract
The invention discloses a remote control system of an excavator, which comprises a main controller, a signal transmitter, a signal receiver and a control valve group, wherein the signal receiver is electrically connected with the main controller, the signal receiver is suitable for receiving a remote control signal of the signal transmitter and transmitting the remote control signal to the main controller, and the main controller can generate a corresponding control signal according to the signal of the signal receiver; the control valve group is electrically connected with the main controller so as to control the flow direction and the flow rate of a pilot fluid path connected to a main valve of the excavator according to a control signal of the main controller, thereby controlling the action of a hydraulic actuating mechanism of the excavator. The excavator remote control system can control the flow and the flow direction of the pressure liquid entering the pilot control port of the main valve in a remote control mode, and has high control precision and high reliability on the actions of the excavator. The invention also discloses an excavator remote control device and an excavator, and the excavator remote control device and the excavator also have the advantages of high control precision and strong reliability.
Description
Technical Field
The invention relates to a hydraulic control system, in particular to a remote control system of an excavator. In addition, the invention also relates to an excavator remote control device and an excavator.
Background
The excavator is used as important equipment in engineering construction, plays an extremely important role in construction of industrial and civil buildings, transportation, hydraulic and electric power engineering, mine excavation, military engineering and the like, and is widely applied to relevant engineering fields.
In order to ensure that the excavator can stably and continuously work in a specific working environment and has enough reliability, a host factory performs thousands of hours of examination on a new product according to the national standard regulation, and verifies various failure performances and maintainability of the product; in addition, when main part suppliers are switched in a host factory, a complete machine carrying test is carried out on the parts to verify the reliability and durability of the parts; the test is usually carried out under severe test conditions and long in duration, and is usually carried out by field operation of a tester. When the excavator works in a severe operating environment, adverse factors in the operating environment are more, such as continuous vibration or dust raising influence on the safety and comfort of operators of the excavator.
Some excavator remote control technologies are also available recently, and remote control operation is performed on actions of an excavator through a remote control system, so that an operator is separated from an operation environment, and the safety and the comfort of the operator are greatly improved. However, the existing excavator remote control system usually controls the opening and closing of the hydraulic valve or the opening and closing of the electric control device only through a remote control signal, so that the precision of action control is poor, the functions are few, and the fine operation requirement of the excavator is difficult to meet. The existing excavator remote control system is usually provided with a hydraulic driving device, the structure of the hydraulic system is complex, and the reliability of the system is reduced. In addition, the existing remote control system is lack of an effective safety guarantee device, when the excavator is controlled in a remote control mode, an operator is far away from the excavator, once the excavator with the remote control device has abnormal conditions such as signal receiving and transmitting abnormality, electrical faults or control valve core blockage, manual intervention cannot be carried out in time, and safety accidents are easily caused.
Disclosure of Invention
The invention aims to solve the technical problem of providing the excavator remote control system which is simple in structure, strong in control function on the actions of the excavator and high in precision.
The invention also aims to solve the technical problem of providing the excavator remote control device which is simple in structure, convenient to install, strong in control function of excavator action, high in precision and convenient to assemble and disassemble with different excavators.
The invention further aims to solve the technical problem of providing an excavator, which can realize multifunctional and high-precision remote control operation and is safe and reliable in operation.
In order to solve the technical problem, a first aspect of the present invention provides an excavator remote control system, including a main controller, a signal transmitter, and a signal receiver, where the signal receiver is electrically connected to the main controller, the signal receiver is adapted to receive a remote control signal from the signal transmitter and transmit the remote control signal to the main controller, and the main controller can generate a corresponding control signal according to a signal from the signal receiver; the excavator remote control system also comprises a control valve group, wherein the control valve group is electrically connected with the main controller so as to control the flow direction and the flow rate of a pilot liquid path conveyed to the main valve of the excavator according to a control signal of the main controller.
Preferably, the control valve group comprises an electric proportional valve group and an electric control reversing valve group, and the electric proportional valve group is in hydraulic connection with the electric control reversing valve group and is electrically connected with the main controller. In this preferred embodiment, when the pilot fluid path connected to the excavator main valve passes through the electro-proportional valve group and the electrically controlled directional control valve group, the main controller can control the flow rate of the pilot fluid path passing through the electro-proportional valve group, and can control the flow direction of the pilot fluid path passing through the electrically controlled directional control valve group, thereby controlling the flow direction and flow rate of the pilot fluid path connected to the excavator main valve.
Further preferably, the electronic control reversing valve group is a three-position four-way electromagnetic valve. In the preferred technical scheme, the three-position four-way electromagnetic valve can control the on-off and flow direction of the pilot pressure liquid in an electric control mode, and is simple in structure and convenient to control.
Preferably, the control valve group further comprises a shuttle valve, one liquid inlet path of the shuttle valve is connected with a liquid path formed by the electric proportional valve group and the electric control reversing valve group, the other liquid inlet path of the shuttle valve is connected with a liquid outlet of a pilot handle of the excavator, and a liquid outlet path of the shuttle valve is connected with a pilot control port of the main valve. According to the preferred technical scheme, an outlet liquid path of a pilot pump of the excavator is connected with the electric proportional valve group, a connecting liquid path between a liquid outlet of a pilot handle and a liquid inlet of a main valve in the excavator is disconnected, a liquid outlet of the pilot handle is connected with a liquid inlet liquid path of a shuttle valve, and a liquid outlet liquid path of the shuttle valve is connected with a pilot control port of the main valve, so that the excavator remote control system can be installed on the excavator to achieve the remote control function of the excavator. Meanwhile, the control function of the original pilot handle of the excavator can be kept. Further, when the remote control operation and the pilot handle operation are simultaneously performed by the shuttle valve, the pilot control liquid path can be closed to prevent operation disorder. .
Further preferably, the electric proportional valve group and the electric control reversing valve group are connected in series between an outlet liquid path of the pilot pump and one liquid inlet liquid path of the shuttle valve. . In the preferred technical scheme, the electric proportional valve group and the electric control reversing valve group are connected in series in the pilot liquid path, so that the flow of pilot liquid can be accurately controlled, and the control accuracy of the action of the excavator is further improved.
Preferably, the excavator remote control system further comprises a flameout relay, the flameout relay is electrically connected with the main controller, and the main controller can control the engine of the excavator to be flameout through the flameout relay. Through this preferred technical scheme, the flame-out relay can trigger under the control of main control unit, and the engine of control excavator stalls to control excavator stop work at any time under necessary condition, guarantee the operation safety of excavator.
In a preferred scheme, the excavator remote control system further comprises a plurality of emergency stop switches, the emergency stop switches are connected in series with a power supply circuit of the main controller, and when any one emergency stop switch is triggered, the power supply of the main controller can be cut off; and/or a plurality of emergency stop switches are connected in series with a power supply circuit of the signal receiver, and the power supply of the signal receiver can be cut off when any emergency stop switch is triggered. According to the preferred technical scheme, the emergency stop switches can be arranged at a plurality of parts which are easy to operate of the excavator, so that the excavator can be conveniently stopped under the unexpected conditions of faults and the like of a remote control system.
Preferably, the excavator remote control system of the present invention further includes a plurality of limit switches, and the limit switches are electrically connected to the main controller, and the main controller can stop the operation of the excavator remote control system of the present invention when any one of the limit switches is triggered. In the preferred technical scheme, a plurality of limit switches are arranged at the position of the excavator, which is easy to contact with an external object, and when the excavator works and is in contact with an external obstacle due to various reasons, the limit switches can be triggered to stop the remote control action of the excavator, so that safety accidents are prevented.
The invention provides an excavator remote control device in a second aspect, which comprises a box body, a connecting frame and the excavator remote control system provided by the first aspect of the invention; the excavator remote control system is arranged in the box body, and the box body is connected with the connecting frame and is arranged on the excavator through the connecting frame.
Preferably, the excavator remote control device of the present invention further comprises a shock absorber installed between the box body and the link frame. In the preferred technical scheme, the shock absorber can absorb the vibration generated in the working process of the excavator, and the stability of the remote control system is prevented from being influenced by the vibration.
The invention provides an excavator, which comprises the excavator remote control system provided by the first aspect of the invention or comprises the excavator remote control device provided by the second aspect of the invention.
Through the technical scheme, the excavator remote control system can control the action of the control valve group in a remote control mode, so that the flow direction and the flow rate of pilot pressure liquid conveyed to the excavator main valve are controlled, the action of the excavator main valve is controlled through the pilot pressure liquid, the action type and the action speed of the excavator are controlled, more control functions are realized, and the control precision is higher. The remote control device for the excavator, disclosed by the invention, is simple in structure, does not contain a power element and an execution element, is higher in stability and reliability, can be conveniently disassembled and assembled with the excavator, and is convenient to use.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
FIG. 1 is a schematic diagram of one embodiment of the excavator remote control system of the present invention;
FIG. 2 is a schematic view of one embodiment of the excavator remote control of the present invention.
Description of the reference numerals
1 master controller 21 Signal transmitter
22 signal receiver 3 control valve group
31 electric proportional valve group 32 electric control reversing valve group
33 shuttle valve 4 flameout relay
51 scram switch 52 limit switch
6 box 7 link span
8 shock absorber 91 pilot pump
92 pilot handle 93 main valve
94 actuator 95 power supply
96 frame
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; either directly or indirectly through intervening media, either internally or in any combination thereof. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
One embodiment of the excavator remote control system of the present invention, as shown in fig. 1, includes a main controller 1, a signal transmitter 21, a signal receiver 22, and a control valve group 3. The signal transmitter 21 may transmit a remote control signal to the signal receiver 22, and the signal receiver 22 may also feed back a necessary status signal to the signal transmitter 21. The signal transmitter 21 and the signal receiver 22 may be implemented using an existing remote control device or an existing remote control technology. The signal receiver 22 and the control valve group 3 are both connected with the main controller 1 through circuits, the signal receiver 22 can transmit the received remote control signals to the main controller 1, the main controller 1 processes the remote control signals to generate corresponding control signals, and the corresponding control signals are transmitted to the control valve group 3 to control the action of the control valve group 3. The main controller 1 can use a PLC controller and also can use a singlechip. The control valve block 3 may be composed of a plurality of suitable hydraulic valves, and the flow direction and the flow rate of the pilot pressure fluid passing through the control valve block 3 can be controlled by the main controller 1. The control valve group 3 is connected between an outlet fluid path of the excavator pilot pump 91 and an inlet fluid path of the main valve 93, and is capable of controlling the state of the main valve 93 by delivering pilot pressure fluid to a control fluid port of the main valve 93, thereby controlling the actuator 94 in the excavator hydraulic actuator to perform different operations. The actuator 94 may be a hydraulic actuator cylinder or a hydraulic actuator motor. Since the control valve group 3 can control the pilot pressure fluid in different flow directions and flow rates in the pilot fluid path connected to the excavator main valve 93, it is possible to control different operations of the main valve 93 and different operations of the actuator 94. And the speed of action execution can be controlled, so that the control precision of the action is higher.
In some embodiments of the excavator remote control system of the present invention, as shown in fig. 1, the control valve pack 3 comprises an electro proportional valve pack 31 and an electrically controlled reversing valve pack 32. Both the electro-proportional valve group 31 and the electrically controlled change-over valve group 32 are connected to the main controller 1, and the electro-proportional valve group 31 and the electrically controlled change-over valve group 32 are connected together through a hydraulic passage. When the pilot pressure liquid passing through the control valve group 3 passes through the electro-proportional valve group 31 and the electronic control reversing valve group 32, the main controller 1 can control the flow rate of the pilot pressure liquid passing through the control valve group 3 through the electro-proportional valve group 31; the direction of the pilot pressure fluid flowing through the control valve block 3 is controlled by an electrically controlled reversing valve block 32. The electro-proportional valve used in the invention can be replaced by other electric control hydraulic valves capable of controlling flow, such as electro-hydraulic servo valves; the electrically controlled directional valve may be replaced with a connection fluid path having a plurality of switching valves capable of controlling the flow direction of the pressure fluid.
As a specific embodiment of the excavator remote control system of the present invention, the electronic control directional valve set 32 is a three-position four-way solenoid valve. Through the three-position four-way electromagnetic valve, the main controller 1 can control the direction of pilot pressure liquid flowing through the control valve group 3 and can also control the on-off of a liquid path of the control valve group 3.
In some embodiments of the excavator remote control system of the present invention, as shown in fig. 1, a shuttle valve 33 is further disposed in the control valve group 3, the shuttle valve 33 may be a single valve body, or a combination of several valve bodies, and the shuttle valve 33 may be, but is not limited to, a three-way shuttle valve. One liquid inlet path of the shuttle valve 33 is connected with a liquid path formed by the electric proportional valve group 31 and the electric control reversing valve group 32, and the other liquid inlet path is connected with a liquid outlet of a pilot handle 92 of the excavator. The fluid path formed by the electro-proportional valve set 31 and the electronic control reversing valve set 32 is also connected with an outlet fluid path of a pilot pump 91 of the excavator so as to introduce pilot pressure fluid into the electro-proportional valve set 31 and the electronic control reversing valve set 32. The liquid outlet path of the shuttle valve 33 is connected to the pilot control port of the main valve 93. The pilot pressure liquid can flow into one liquid inlet path of the shuttle valve 33 through the electro-proportional valve set 31 and the electronic control reversing valve set 32 on one hand, and can flow into the other liquid inlet path of the shuttle valve 33 through the pilot handle 92 on the other hand. The three-way shuttle valve 33 can transmit the pressure liquid to the liquid outlet path thereof and flow into the pilot control port of the main valve 93 regardless of which liquid inlet path of the shuttle valve 33 has the pressure liquid input. Therefore, not only the control of the excavator operation can be performed using the signal transmitter 21, but also the control of the excavator operation can be performed using the pilot handle 92 on the excavator. When the signal emitter 21 and the pilot handle 92 are used simultaneously to control the excavator, the pilot pressure liquid is simultaneously delivered to the two liquid inlet paths of the shuttle valve 33 through different ways, the valve core of the shuttle valve 33 is located at the middle position, the liquid path from the shuttle valve 33 to the pilot oil port of the main valve 93 is closed, and the executive element does not perform any action. Therefore, the execution disorder caused by the simultaneous use of the signal transmitter 21 and the pilot handle 92 to control the excavator can be prevented, and action execution errors and potential safety hazards can be prevented. It should be noted that the electro-proportional valve group 31, the electronic control reversing valve group 32, the three-way shuttle valve 33, and the like in the control valve group 3 may be packaged in the same housing to form an independent structure, and oil ports respectively connected to a liquid path formed by the electro-proportional valve group 31 and the electronic control reversing valve group 32, a liquid inlet path of the shuttle valve 33, and a liquid outlet path of the shuttle valve 33 may also be provided on the housing, and through these oil ports, the hydraulic control valve group can be conveniently connected to corresponding hydraulic paths on the excavator. In the excavator remote control system of the embodiment, the connection between the excavator remote control system of the present invention and the excavator can be completed only by disconnecting the connecting pipeline between the original pilot handle 92 and the pilot control oil port of the main valve 93 of the excavator, connecting the pipeline connected with the pilot handle 92 to one liquid inlet path of the shuttle valve 33, connecting the pipeline connected with the main valve 93 to the liquid outlet path of the shuttle valve 33, and connecting the electro proportional valve group 31 to the outlet path of the pilot pump 91. At this time, the excavator remote control system of the present invention can be used to remotely control the excavator while maintaining the original function of the excavator to control using the pilot handle 92. The connection between the control valve group 3 and the excavator is removed, and the liquid path connection between the pilot handle 92 and the pilot control oil port of the main valve 93 is restored, so that the excavator remote control system can be removed from the excavator without affecting the original functions of the excavator. The dismouting is very convenient, can carry out the interim installation use under the circumstances such as reliability test to the excavator.
In some embodiments of the excavator remote control system of the present invention, as shown in fig. 1, the electro proportional valve group 31 and the electrically controlled directional valve group 32 are connected in series between the outlet fluid path of the pilot pump 91 and one of the inlet fluid paths of the shuttle valve 33. The pilot pressure fluid sequentially flows through the flow control of the electro-proportional valve set 31 and the flow control of the electrically controlled directional valve set 32, then flows through the shuttle valve 33 to enter the pilot control oil port of the main valve 93, and controls the valve core position of the main valve 93, thereby controlling the excavator actuating element 94 to execute different actions and speeds of the actions. Therefore, the control precision of the excavator action is higher. In the present invention, the sequence of the pilot pressure fluid passing through the electro-proportional valve set 31 and the electrically controlled directional valve set 32 is not limited, that is, the pilot pressure fluid may flow through the electro-proportional valve set 31 first and then flow through the electrically controlled directional valve set 32; or the electric control reversing valve group 32 can be firstly flowed through, and then the electric proportional valve group 31 can be flowed through.
In some embodiments of the excavator remote control system of the present invention, as shown in fig. 1, the excavator remote control system of the present invention further includes a key-off relay 4. The control terminal of the flame-out relay 4 is electrically connected to the main controller 1 and can be operated under the control of the main controller 1. When the flameout relay 4 is operated, the engine of the excavator can be controlled to be flameout. Therefore, the signal emitter 21 can be used for controlling the engine of the excavator to be switched off when an accident happens, and the main controller 1 can be used for controlling the engine of the excavator to be switched off when other conditions of the excavator remote control system are met, so that the working safety of the excavator is ensured.
As an embodiment of the excavator remote control system of the present invention, as shown in fig. 1, the excavator remote control system of the present invention further includes a plurality of emergency stop switches 51. The plurality of emergency stop switches 51 may be connected between the power source 95 and the main controller 1, or may be connected between the power source 95 and the signal receiver 22, or the main controller 1 and the power supply circuit of the signal receiver 22 are connected together, and the plurality of emergency stop switches 51 are connected between the power supply circuit of the main controller 1 and the signal receiver 22 and the power source 95. When any one of the emergency stop switches is triggered, the power supply circuit of the main controller 1 and/or the signal receiver 22 can be cut off, so that the remote control system of the excavator stops working, the excavator stops working under the control of the remote control system, and the safety of the excavator is improved. The plurality of emergency stop switches 51 may be provided at a plurality of different easily operable locations on the excavator, respectively, to facilitate operation of the emergency stop switches from different locations in the event of a failure of the remote control system. The signal emitter 21 is also provided with an emergency stop button, and when the emergency stop button on the signal emitter 21 is pressed, the main controller 1 can control the excavator remote control system to stop running.
As an embodiment of the excavator remote control system of the present invention, as shown in fig. 1, the excavator remote control system of the present invention further includes a plurality of limit switches 52. The limit switches 52 are all electrically connected with the main controller 1, when any limit switch 52 is triggered, a trigger signal is transmitted to the main controller 1, the main controller 1 controls the remote control system of the excavator to stop running, and the excavator stops acting under the control of the remote control system. In addition, the main controller 1 can also control the action of the flameout relay 4, so that the engine of the excavator is flamed out, and the safety of the excavator is further improved. The limit switches 52 may be installed at a portion of the excavator, which is easily contacted with external objects, such as an outer side of a moving arm of the excavator, a protruding portion of a vehicle body, and the like. Once the remote control system is out of control or the excavator is contacted with an external obstacle due to misoperation, the limit switch 52 can be triggered to stop the action execution of the excavator, and the safety of the excavator is ensured.
One embodiment of the excavator remote control apparatus of the present invention, as shown in fig. 2, includes a box 6, a link 7, and the excavator remote control system of any of the above embodiments. The excavator remote control system is installed in box 6, and box 6 can be divided into upper and lower two-layer, installs electric elements such as main control unit 1, signal receiver 22 on the upper strata of box 6, and installs hydraulic elements such as valve unit 3 in the lower floor of box 6, prevents that pressure fluid from leaking the normal operating that influences electric elements. The box body 6 is arranged on a connecting frame 7, and the connecting frame 7 can be an integral metal mounting frame or formed by connecting a plurality of metal supporting pieces. The attachment frame 7 is typically fixed to the frame 96 of the excavator. The structure that installs excavator remote control system in box 6 can effectively prevent the corruption of external dust rainwater to hydraulic pressure and electric part, has improved excavator remote control system's stability and life.
In some embodiments of the excavator remote control of the present invention, as shown in fig. 2, a shock absorber 8 is further provided between the tank 6 and the link frame 7. The shock absorber 8 can use elastic shock absorbing devices such as springs, and the shock absorber 8 can absorb vibration and impact generated in the working process of the excavator and prevent the vibration in the working environment from influencing the stability of the excavator remote control device.
As described above, in the excavator remote control system according to the present invention, the operator can operate the signal transmitter 21 to transmit a control signal to the signal receiver 22, the signal receiver 22 inputs a remote control signal to the main controller 1, and the main controller 1 outputs a control signal to control the flow rate and the flow direction of the pilot pressure fluid passing through the control valve group 3, thereby controlling the movement of the spool of the main valve 93, and controlling the operation direction and speed of the actuator 94, so that the control function of the actuator is increased, and the control accuracy is improved. The remote control system of the excavator has the advantages that the original structure of the excavator is changed little, the connecting structure of the remote control system and the excavator is few, and the remote control system is convenient to assemble and disassemble. In the preferred embodiment of the excavator remote control system of the present invention, the emergency stop switch 51 is provided so that when an emergency situation is found during the remote control operation and the excavator needs to be stopped, the operator can press the emergency stop button on the signal transmitter 21 to operate the remote control system to stop the operation. If the remote control signal is abnormal and can not be normally controlled, the excavator can be approached, the emergency stop switch 51 is pressed, the power supply of the remote control system of the excavator is cut off, the operation of the remote control system is stopped, and the working safety of the excavator is ensured. The limit switch 52 can be triggered when other obstacles are close to the excavator or the excavator is close to other objects due to improper operation, and the remote control system is controlled by the main controller 1 to stop running, so that safety accidents are avoided. The setting of flame-out relay can control the engine of excavator in time to flame out, prevents to stop in time under the unexpected condition, has improved remote control system's security. The original arrangement of the control function of the pilot handle 92 is kept, the remote control system can still be directly operated through the pilot handle 92 after being installed, and the action disorder caused when the signal transmitter 21 and the pilot handle 92 are operated simultaneously can be prevented. The excavator remote control device has the advantages that all the hydraulic components and the electric components are arranged in the box body 6, and the hydraulic components and the electric components can be effectively prevented from being corroded by external dust and rainwater. The shock absorber 8 can effectively reduce the influence of the working vibration of the excavator on the remote control device.
The present invention also provides an excavator using the excavator remote control system according to any one of the embodiments of the present invention or using the excavator remote control device according to any one of the embodiments of the present invention. And therefore also has the above-mentioned advantageous effects.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "a specific embodiment," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present disclosure, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (11)
1. The remote control system of the excavator comprises a main controller (1), a signal transmitter (21) and a signal receiver (22), wherein the signal receiver (22) is electrically connected with the main controller (1), the signal receiver (22) is suitable for receiving a remote control signal of the signal transmitter (21) and transmitting the remote control signal to the main controller (1), and the main controller (1) can generate a corresponding control signal according to the signal of the signal receiver (22); the hydraulic control system is characterized by further comprising a control valve group (3), wherein the control valve group (3) is electrically connected with the main controller (1) so as to control the flow direction and flow rate of a pilot liquid path connected to an excavator main valve (93) according to a control signal of the main controller (1).
2. The excavator remote control system according to claim 1, wherein the control valve group (3) comprises an electric proportional valve group (31) and an electric control reversing valve group (32), the electric proportional valve group (31) is in fluid connection with the electric control reversing valve group (32) and is electrically connected with the main controller (1).
3. The excavator remote control system of claim 2, wherein the electronically controlled reversing valve block (32) is a three-position four-way solenoid valve.
4. The excavator remote control system according to claim 2 or 3, wherein the control valve group (3) further comprises a shuttle valve (33), one liquid inlet path of the shuttle valve (33) is connected with a liquid path formed by the electric proportional valve group (31) and the electric control reversing valve group (32), the other liquid inlet path is connected with a liquid outlet of an excavator pilot handle (92), and a liquid outlet path of the shuttle valve (33) is connected with a pilot control port of the main valve (93).
5. The excavator remote control system according to claim 4, wherein the electro proportional valve group (31) and the electrically controlled directional valve group (32) are connected in series between an outlet fluid path of the pilot pump (91) and an inlet fluid path of the shuttle valve (33).
6. The excavator remote control system according to claim 1, further comprising a flameout relay (4), wherein the flameout relay (4) is electrically connected with the main controller (1), and the main controller (1) can control the engine of the excavator to be flamed out through the flameout relay (4).
7. The excavator remote control system according to claim 1, further comprising a plurality of emergency stop switches (51), wherein the plurality of emergency stop switches (51) are connected in series to a power supply circuit of the main controller (1), and when any one of the emergency stop switches (51) is activated, the power supply of the main controller (1) can be cut off; and/or the presence of a gas in the gas,
the plurality of emergency stop switches (51) are connected in series to a power supply circuit of the signal receiver (22), and the power supply of the signal receiver (22) can be cut off when any one of the emergency stop switches (51) is activated.
8. The excavator remote control system according to claim 1, further comprising a plurality of limit switches (52), wherein the limit switches (52) are electrically connected with the main controller (1), and the main controller (1) can stop the operation of the excavator remote control system when any one of the limit switches (52) is triggered.
9. An excavator remote control device characterized by comprising a box body (6), a connecting frame (7) and the excavator remote control system of any one of claims 1 to 8;
the excavator remote control system is arranged in the box body (6), the box body (6) is connected with the connecting frame (7) and is arranged on the excavator through the connecting frame (7).
10. The excavator remote control of claim 9, further comprising a shock absorber (8), said shock absorber (8) being mounted between said box (6) and said attachment frame (7).
11. An excavator comprising an excavator remote control system as claimed in any one of claims 1 to 8 or comprising an excavator remote control as claimed in claim 9 or 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010850545.7A CN112064711A (en) | 2020-08-21 | 2020-08-21 | Excavator remote control system, excavator remote control device and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010850545.7A CN112064711A (en) | 2020-08-21 | 2020-08-21 | Excavator remote control system, excavator remote control device and excavator |
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| CN112064711A true CN112064711A (en) | 2020-12-11 |
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| CN202010850545.7A Pending CN112064711A (en) | 2020-08-21 | 2020-08-21 | Excavator remote control system, excavator remote control device and excavator |
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Cited By (1)
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| CN115182406A (en) * | 2022-06-21 | 2022-10-14 | 徐工集团工程机械股份有限公司 | A long-range unmanned remote control system and loaderdigger for loaderdigger |
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Application publication date: 20201211 |