Tool changer system, engineering machine and working method of tool changer system

Abstract

The application discloses a work tool quick change system, an engineering machine and a work method of the quick change system. The work tool quick change system of the engineering machine comprises the quick change device. The quick change device comprises: a first coupling member; a second coupling member; a locking pin movably mounted on the first coupling member to switch between a first position and a second position; a first position sensor configured to detect whether the first pin shaft is arranged at a predetermined position of the first pin shaft arrangement portion; a second position sensor configured to detect whether the second pin shaft is arranged at a predetermined position of the first pin shaft arrangement portion; and a controller which is respectively connected with the first position sensor and the second position sensor in signal and is configured to control the locking pin to switch from the second position to the first position after the first pin shaft and the second pin shaft are respectively arranged at the predetermined positions of the first pin shaft arrangement portion and the second pin shaft arrangement portion.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of engineering machinery, in particular to a working implement quick-change system, an engineering machinery and a working method of the quick-change system. BACKGROUND

[0002] The excavator is an important engineering machinery equipment widely used in engineering construction, which has multiple functions and characteristics and can play a key role in many aspects. In the daily work process, different working environments are often encountered, which requires the front-end device of the excavator to switch different working implements, such as buckets, breakers, hydraulic shears, grab buckets, and soil loosening devices. The excavator usually adopts manual operation to replace the pin shaft of the front-end quick-change device, and then replace another implement. This operation method not only consumes time and effort, but also has low efficiency and low safety.

[0003] In addition, the ordinary hydraulic quick-change device has a single working mode when facing complex working environments and requirements, and the working arm has no working freedom, so a universal connector (tilt rotator) appears on the market. The implement of the lower coupling piece of the universal connector can not only realize more working postures of the excavator, but also broaden its functions, making it more practical. Therefore, under this working mode, the front end of the excavator arm needs to be connected to two quick-change devices.

[0004] In related technologies, the working implement at the front end of the working arm of the excavator is usually replaced by manual operation. When replacing the implement of the excavator, the pin shaft of the quick-change device at the front end of the excavator arm is first disassembled, and then the excavator is opened next to the implement. After that, manual installation and disassembly are performed by manual operation. When using manual operation, time and effort are consumed, and multiple people are required to operate, which is inefficient, and the implement has the risk of falling at any time, which is not safe.

[0005] In another related technology, the working implement at the front end of the working arm of the excavator is replaced by button switch operation. When replacing the implement of the excavator, the quick-change device "lock pin opening" switch in the cab is first pressed to disconnect the quick-change device, and then another implement is connected. After the implement next to the working staff confirms that the front pin shaft and the rear pin shaft are in place, the cab personnel are notified to press the "lock pin closing" switch to lock the quick-change lock pin. Although the quick-change device operated by the button switch realizes automatic conduction of mechanical, electrical and hydraulic, the operation method is simple and easy to be accidentally touched or misoperated. Moreover, during the working process, the working state of the implement locking device cannot be obtained, and the implement may be disconnected at any time, causing safety accidents. SUMMARY

[0006] The present application aims to provide a working implement quick-change system, an engineering machinery and a working method of the quick-change system to improve the problem of easy accidental touch and misoperation caused by the inability to detect the state of the quick-change device in the prior art.

[0007] According to an aspect of an embodiment of the present application, there is provided a work implement quick change system of a working machine, the quick change system comprising a quick change device connecting a working arm of the working machine and a work implement, and a controller in signal connection with the quick change device, the quick change device comprising:

[0008] a first coupling member comprising a first pin shaft seating portion and a second pin shaft seating portion arranged along a first direction;

[0009] a second coupling member comprising a first pin shaft adapted to the first pin shaft seating portion and a second pin shaft adapted to the second pin shaft seating portion;

[0010] a locking pin movably mounted on the first coupling member to switch between a first position and a second position, the locking pin in the first position locking the second pin shaft in the second pin shaft seating portion, the locking pin in the second position allowing the second pin shaft to enter or disengage from the second pin shaft seating portion;

[0011] a first position sensor configured to detect whether the first pin shaft is seated at a predetermined position of the first pin shaft seating portion;

[0012] a second position sensor configured to detect whether the second pin shaft is seated at a predetermined position of the second pin shaft seating portion;

[0013] the controller being in signal connection with the first position sensor and the second position sensor respectively, and being configured to control the locking pin to switch from the second position to the first position after the first pin shaft and the second pin shaft are seated at the predetermined positions of the first pin shaft seating portion and the second pin shaft seating portion respectively.

[0014] In some embodiments, the work implement quick change system further comprises:

[0015] a hydraulic actuating element connected with the locking pin and configured to drive the locking pin to switch between the first position and the second position;

[0016] a locking solenoid valve in communication with the hydraulic actuating element to control the hydraulic actuating element to act;

[0017] the controller being in signal connection with the locking solenoid valve to control the locking pin to switch between the first position and the second position.

[0018] In some embodiments, the quick change device further comprises a third position sensor configured to detect whether the locking pin is in the first position.

[0019] In some embodiments, the work implement quick change system further comprises a manipulation device in signal connection with the controller, the manipulation device comprising:

[0020] an alarm component configured to send alarm information under the control of the controller in response to the first pin shaft of the first quick change device being disposed in a predetermined position of the first pin shaft disposing portion; and / or

[0021] a first indication component configured to send indication information under the control of the controller in response to the first pin shaft of the first quick change device being disposed in a predetermined position of the first pin shaft disposing portion; and / or

[0022] a second indication component configured to send indication information under the control of the controller in response to the second pin shaft of the first quick change device being disposed in a predetermined position of the second pin shaft disposing portion; and / or

[0023] a third indication component configured to send indication information under the control of the controller in response to the locking pin of the first quick change device being in the first position.

[0024] In some embodiments, the work implement quick change system further comprises a universal connector, the first quick change device is used to connect the work arm and the universal connector, the quick change device further comprises a second quick change device connecting the universal connector and the work implement, the controller is signal connected with the first quick change device and the second quick change device respectively, and the control device further comprises:

[0025] a switching button configured to send an instruction to the controller to switch between controlling the first quick change device and controlling the second quick change device; and / or

[0026] a first quick change device operation indication component configured to send indication information under the control of the controller in response to the controller controlling the first quick change device;

[0027] a second quick change device operation indication component configured to send indication information under the control of the controller in response to the controller controlling the second quick change device;

[0028] a fourth indication component configured to send indication information under the control of the controller in response to the first pin shaft of the second quick change device being disposed in a predetermined position of the first pin shaft disposing portion; and / or

[0029] a fifth indication component configured to send indication information under the control of the controller in response to the second pin shaft of the second quick change device being disposed in a predetermined position of the second pin shaft disposing portion; and / or

[0030] a sixth indication component configured to send indication information under the control of the controller in response to the locking pin of the second quick change device being in the first position.

[0031] In some embodiments, the control device further comprises:

[0032] an opening button configured to send an instruction to the controller to switch the locking pin to the second position; and / or

[0033] The closing button is configured to send an instruction to the controller to switch the locking pin to the first position.

[0034] In some embodiments, the first coupling comprises a first hydraulic fluid interface in communication with a hydraulic system of the working machine, the second coupling comprises a second hydraulic fluid interface to interface with the first hydraulic fluid interface,

[0035] The controller is configured to, in response to the instruction sent by the closing button to switch the locking pin to the first position, open a boost solenoid of the hydraulic system to provide hydraulic fluid downstream of the quick coupler; and / or

[0036] The controller is configured to, in response to the instruction sent by the closing button to switch the locking pin to the second position, open a release solenoid of the hydraulic system to release pressure of the hydraulic fluid of the hydraulic system from the work implement.

[0037] In some embodiments,

[0038] The controller is configured to, in response to the instruction sent by the opening button to switch the locking pin to the second position, open the release solenoid of the hydraulic system to release pressure of the hydraulic fluid of the hydraulic system from the work implement, and then

[0039] The controller is configured to, in response to the instruction sent by the controller to switch the locking pin to the second position, after opening the release solenoid.

[0040] In some embodiments, the quick coupler further comprises an identification code representing a kind of the work implement and an RFID detection sensor for identifying the identification code, one of the identification code and the RFID detection sensor is mounted on the first coupling and the other is mounted on the second coupling.

[0041] According to another aspect of the present application, there is also provided a working machine comprising the above-mentioned work implement quick change system of the working machine.

[0042] According to another aspect of the present application, there is also provided a working method of the above-mentioned work implement quick change system of the working machine, in some embodiments, comprising a mounting method of combining the first coupling and the second coupling, the mounting method comprising:

[0043] moving the first pin shaft to the first pin shaft positioning portion;

[0044] judging whether the first pin shaft is positioned at a predetermined position of the first pin shaft positioning portion;

[0045] if the first pin shaft is mounted at the predetermined position, moving the second pin shaft to the second pin shaft positioning portion;

[0046] judging whether the second pin shaft is positioned at a predetermined position of the second pin shaft positioning portion;

[0047] If the second pin shaft is installed to the predetermined position, the locking pin is controlled to switch to the first position.

[0048] In some embodiments, the installation method further comprises:

[0049] After the second pin shaft is installed to the predetermined position, the locking pin is controlled to switch to the first position and the hydraulic fluid is controlled to be provided downstream of the quick-change device.

[0050] In some embodiments, after the first pin shaft is installed to the predetermined position, the alarm component is controlled to send an alarm message.

[0051] According to another aspect of the present application, there is also provided a working method of the working implement quick-change system of the engineering machinery as described above, in some embodiments, comprising a dismounting method of separating the first coupling member and the second coupling member, the dismounting method comprising:

[0052] receiving a start dismounting instruction;

[0053] switching the locking pin to the second position and opening a release solenoid valve of the hydraulic system to release the pressure of the hydraulic fluid of the hydraulic system.

[0054] By applying the technical solution of the present application, the first position sensor and the second position sensor are respectively used to detect whether the first pin shaft and the second pin shaft are installed to the predetermined position, after the first pin shaft and the second pin shaft are both installed to the predetermined position, the locking pin is controlled to switch to the first position to lock the second pin shaft in the second pin shaft seating portion, which improves the problem of easy collision or failure to complete effective installation due to the inability to monitor the state of the quick-change device in the prior art.

[0055] Other features of the present application and its advantages will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0056] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0057] Figure 1 A structural schematic diagram of an engineering machinery showing an embodiment of the present application is shown;

[0058] Figure 2 A structural schematic diagram of a quick-change device of a working implement quick-change system showing an embodiment of the present application is shown;

[0059] Figure 3 Fig. 1 shows a structural diagram of a first coupling member of a quick-change device of a work tool quick-change system according to an embodiment of the present application;

[0060] Figure 4 Fig. 2 shows a structural diagram of a second coupling member of a quick-change device of a work tool quick-change system according to an embodiment of the present application;

[0061] Figure 5 Fig. 3 shows a structural diagram of a control device of a quick-change device of a work tool quick-change system according to an embodiment of the present application;

[0062] Figure 6 Fig. 4 shows a flow chart of a mounting method of a work tool quick-change system according to an embodiment of the present application;

[0063] Figure 7 Fig. 5 shows a flow chart of a dismounting method of a work tool quick-change system according to an embodiment of the present application.

[0064] In the drawings:

[0065] 1, work tool; 2, quick-change device; 3, control device; 4, safety door; 5, hydraulic valve group; 6, controller; 7, wire harness; 8, work arm; 9, universal connector;

[0066] 2a, first quick-change device; 2b, second quick-change device; 21, first coupling member; 22, second coupling member; 23, first pin shaft; 24, first position sensor; 25, third position sensor; 26, second position sensor; 27, locking pin; 28, RFID detection sensor; 29, identification code; 210, second pin shaft; 211, first pin shaft seating portion; 212, second pin shaft seating portion;

[0067] 31, power supply and bus communication indicator light; 32, alarm component; 33, first quick-change device operation indicator component; 34, first indicator component; 35, second indicator component; 36, third indicator component; 37, switching button; 38, second quick-change device operation indicator component; 39, fourth indicator component; 310, fifth indicator component; 311, sixth indicator component; 312, on button; 313, off button; 314, hook and confirmation button. DETAILED DESCRIPTION

[0068] Clearly, the embodiments described are only some embodiments of the application and not all embodiments of the application. The descriptions of the at least one example embodiment are intended to be illustrative, and not to be limiting on the scope of the application. Any and all embodiments that would be apparent to those of ordinary skill in the art from the foregoing description, including any and all substitutions of equivalents, are intended to be encompassed by the application.

[0069] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application; the use of the terms "including," "comprising," "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.

[0070] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another.

[0071] In the description of the application, it should be noted that, unless otherwise specified, the meaning of "a plurality of" is more than two; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like is only for the purpose of facilitating description of the application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In addition, the terms "first", "second", "third", etc. are only for the purpose of description and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error.

[0072] The orientation words appearing in the following description are the directions shown in the drawings, and are not limited to the specific structure of the application. In the description of the application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0073] If not specifically stated, the terms "including" and "comprising" as used herein are open-ended and also include the more restrictive terms "consisting of" and "consist of."

[0074] If not specifically stated, the term "or" as used herein is inclusive. For example, the phrase "A or B" means "A, B, or both A and B." More specifically, any one of the following conditions can satisfy the condition "A or B": A is true or exists and B is false or does not exist; A is false or does not exist and B is true or exists; or both A and B are true or exist.

[0075] Figure 1 A structural schematic diagram of an engineering machine is shown, which includes a vehicle body, a working arm 8 swingably mounted on the vehicle body, and a working tool 1 mounted on the working arm 8. The working tool 1 includes one or more of a bucket, a breaking hammer, a hydraulic shear, a grab bucket, and a ripper. The engineering machine can be an excavator, a loader, etc.

[0076] The engineering machine further includes a cab mounted on the vehicle body and a safety door 4 mounted on the cab. Inside the cab, there are also provided with control devices 3 for controlling various working devices of the engineering machine and a controller 6. The engineering machine further includes a hydraulic valve group 5 for controlling the working arm 8 and the working tool operation, and a wire harness 7 connecting the controller 6 and various electrical equipment of the engineering machine. The safety door 4 is in signal connection with the controller 6 and is connected with a pilot control lever of the excavator, for enabling all actions of the quick-change device (only when the safety door is closed, the actions of the quick-change device are allowed), ensuring the operation safety.

[0077] In this embodiment, in order to facilitate the working machine to replace different working tools, the engineering machine further includes a working tool quick-change system connecting the working arm 8 and the working tool 1.

[0078] The working tool quick-change system mainly includes a quick-change device 2 connecting the working arm 8 and the working tool 1 of the engineering machine, and a controller 6 in signal connection with the quick-change device 2.

[0079] In the embodiment, the work tool quick-change system further comprises a universal connector 9, the quick-change device 5 comprises a first quick-change device 2a and a second quick-change device 2b, the first quick-change device 2a connects the work arm 8 and the universal connector 9, and the second quick-change device 2b further connects the universal connector 9 and the work tool 1. In the embodiment, the first quick-change device and the second quick-change device have substantially the same structure. The universal connector is a known connector that allows two connected parts to rotate in multiple degrees of freedom, and patent applications CN201020536818.2 and CN201721080564.6 have relevant descriptions of the universal connector.

[0080] Referring to Figures 2 to 4 As shown in the figure, the quick-change device 2 comprises a first coupling part 21, a second coupling part 22, a locking pin 27, a first position sensor 24 and a second position sensor 26.

[0081] The first coupling part 21 comprises a first pin shaft seating part 211 and a second pin shaft seating part 212 arranged along a first direction. The second coupling part 22 comprises a first pin shaft 23 matched with the first pin shaft seating part 211 and a second pin shaft 210 matched with the second pin shaft seating part 212.

[0082] The first coupling part 21 and the second coupling part 22 are respectively installed on two parts to be connected, for realizing quick combination or separation of the two parts. For example, the first coupling part 21 and the second coupling part 22 are respectively installed on the work arm 8 and the universal connector 9, or the first coupling part 21 and the second coupling part 22 are respectively installed on the universal connector 9 and the work tool 1.

[0083] The locking pin 27 is movably installed on the first coupling part 21 to switch between a first position and a second position. When the locking pin 27 is in the first position, the second pin shaft 210 is locked in the second pin shaft seating part 212, and when the locking pin 27 is in the second position, the second pin shaft 210 is allowed to enter or leave the second pin shaft seating part 212.

[0084] The first position sensor 24 is configured to detect whether the first pin shaft 23 is seated in a predetermined position of the first pin shaft seating part 211. The second position sensor 26 is configured to detect whether the second pin shaft 210 is seated in a predetermined position of the second pin shaft seating part 212.

[0085] The controller 6 is signal connected with the first position sensor 24 and the second position sensor 26 respectively, and is configured to control the locking pin 27 to switch from the second position to the first position after the first pin shaft 23 and the second pin shaft 210 are respectively installed to the predetermined positions of the first pin shaft seating part 211 and the second pin shaft seating part 212.

[0086] In the present embodiment, the first position sensor 24 and the second position sensor 26 are respectively used to detect whether the first pin shaft 23 and the second pin shaft 210 are installed to a predetermined position, and after the first pin shaft 23 and the second pin shaft 210 are both installed to the predetermined position, the locking pin 27 is controlled to switch to the first position to lock the second pin shaft into the second pin shaft seating portion 212, thereby improving the problem of easy collision or failure to complete effective installation due to the inability to monitor the state of the quick-change device in the prior art.

[0087] The first position sensor 24 can be a photoelectric switch or a proximity switch, which is triggered when the first pin shaft 23 is installed to the predetermined position of the first pin shaft seating portion 211, and feeds back the information of the installation of the first pin shaft 23 to the controller 6.

[0088] The second position sensor 26 can be a photoelectric switch or a proximity switch, which is triggered when the second pin shaft 210 is installed to the predetermined position of the second pin shaft seating portion 212, and feeds back the information of the installation of the second pin shaft 210 to the controller 6.

[0089] In combination Figures 2 to 4 As shown, the first pin shaft 23 and the second pin shaft 210 are arranged in parallel and spaced apart, and the first pin shaft seating portion 211 and the second pin shaft seating portion 212 are arranged along a first direction perpendicular to the first pin shaft 23 and the second pin shaft 210.

[0090] The first pin shaft seating portion 211 is a hook-shaped structure having a first opening in the circumferential direction of the first pin shaft 23, and the hook-shaped structure forms a first pin shaft hole which is not closed in the circumferential direction. The first pin shaft hole is formed on the base of the first coupling member 21. Optionally, the first opening of the first pin shaft seating portion 211 faces away from the second pin shaft seating portion 212.

[0091] The second pin shaft seating portion 212 has a second opening in the circumferential direction of the second pin shaft 210, and the second opening extends from the side of the second pin shaft 210 away from the first pin shaft 23 to the side of the second pin shaft 210 facing the second coupling member 22.

[0092] In some embodiments, the locking pin 27 in the first position is located on the side of the second pin shaft 210 facing the second coupling member 22 to block the second pin shaft 210 from disengaging from the first coupling member 21. The first coupling member 21 is provided with a locking pin mounting hole, and the locking pin 27 is telescopically arranged in the mounting hole. When the locking pin is in the first position, it extends out of the mounting hole to close the side of the second opening facing the second coupling member 22. When the locking pin 27 is in the second position, it is retracted into the mounting hole to avoid the side of the second opening facing the second coupling member 22.

[0093] In the process of installing the first coupling member 21 and the second coupling member 22 together, the first coupling member 21 is moved by the working arm 8 so that the hook-shaped structure forming the first pin shaft hole hooks the first pin shaft 23, and then the first pin shaft 23 is installed to the predetermined position of the first pin shaft installation part 211, and then the second pin shaft 210 is moved into the second pin shaft installation part 212 by the second opening of the second pin shaft installation part 212, and then the locking pin 27 is switched to the first position to lock the second pin shaft in the second pin shaft installation part 212.

[0094] The working tool quick change system further comprises a hydraulic actuating element and a locking solenoid valve. The hydraulic actuating element is connected with the locking pin 27 and is configured to drive the locking pin 27 to switch between the first position and the second position; the locking solenoid valve is in communication with the hydraulic actuating element to control the action of the hydraulic actuating element.

[0095] The controller 6 is in signal connection with the locking solenoid valve to control the switching of the locking pin 27 between the first position and the second position. When the first pin shaft 23 and the second pin shaft 210 are respectively installed to the predetermined positions of the first pin shaft installation part 211 and the second pin shaft installation part 212, the controller 6 switches the locking pin to the first position by controlling the operation of the locking solenoid valve.

[0096] In some embodiments, the quick change device 2 further comprises a third position sensor 25 configured to detect whether the locking pin 27 is in the first position. The controller 6 is in signal connection with the third position sensor 25 to receive the position information of the locking pin 27.

[0097] The controller 6 is placed in the cab of the excavator to control the action of the locking pin 27 of the quick change device, monitor the state of the quick change device (the positions of the first pin shaft 23, the second pin shaft 210 and the locking pin 27 are detected by the first position sensor 24, the second position sensor 26 and the third position sensor 25 respectively), and make logical judgments on the control device 3.

[0098] The third position sensor 25 can be a photoelectric switch or a proximity switch, which is triggered after the locking pin 27 is switched to the first position or the second position, and the photoelectric switch or the proximity switch feeds back the information of the locking pin to the controller 6.

[0099] Referring to Figure 5 , the working tool quick change system further comprises a control device 3 in signal connection with the controller 6, and the control device 3 comprises a power supply and a bus communication indicator 31, an alarm component 32, a first indicator component 34, a second indicator component 35 and a third indicator component 36.

[0100] The control device 3 comprises a monitoring operation panel. The control device 3 is connected with the controller 6 through a communication line.

[0101] The power supply and bus communication indicator light 31 is used to light up after the system is powered on and in communication.

[0102] The alarm component 32 is configured to issue alarm information under the control of the controller 6 in response to the first pin shaft 23 of the first quick change device 2a being placed in the predetermined position of the first pin shaft placement portion 211. The alarm component 32 includes an audible and visual alarm light. The alarm component 32 is used to realize the warning of the quick change device operation process and the alarm when the system fails.

[0103] The first indication component 34 is configured to issue indication information under the control of the controller 6 in response to the first pin shaft 23 of the first quick change device 2a being placed in the predetermined position of the first pin shaft placement portion 211. The first indication component 34 includes a first indication light, and the first indication component 34 is used to display whether the first pin shaft 23 of the first quick change device 2a is installed in place.

[0104] The second indication component 35 is configured to issue indication information under the control of the controller 6 in response to the second pin shaft 210 of the first quick change device 2a being placed in the predetermined position of the second pin shaft placement portion 212. The second indication component 35 includes a second indication light, and the second indication component 35 is used to display whether the second pin shaft 210 of the first quick change device 2a is installed in place.

[0105] The third indication component 36 is configured to issue indication information under the control of the controller 6 in response to the locking pin 27 of the first quick change device 2a being in the first position. The third indication component 36 includes a third indication light, which lights up when the locking pin 27 is switched to the first position to lock the second pin shaft 310.

[0106] The controller 6 is signal connected with the first quick change device 2a and the second quick change device 2b respectively, and the operating device 3 further includes a switching button 37, a first quick change device operation indication component 33, a second quick change device operation indication component 38, a fourth indication component 39, a fifth indication component 310 and a sixth indication component 311.

[0107] The switching button 37 is configured to send instructions to the controller 6 to switch between controlling the first quick change device 2a and controlling the second quick change device 2b; the switching button 37 is used to switch the operation enable of the first and second quick change devices, and pressing the switching button 37 causes the controller 6 to constantly switch between controlling the first quick change device 2a and controlling the second quick change device 2b.

[0108] The first quick change device operation indication component 33 is configured to issue indication information under the control of the controller 6 in response to the controller 6 controlling the first quick change device 2a. The second quick change device operation indication component 38 is configured to issue indication information under the control of the controller 6 in response to the controller 6 controlling the second quick change device 2b.

[0109] The first quick coupler operation indicating member 33 and the first quick coupler operation indicating member 33 are configured to display which one of the first quick coupler 2a and the second quick coupler 2b is controlled by the controller 6.

[0110] The fourth indicating member 39 is configured to emit indicating information in response to the first pin shaft 23 of the second quick coupler 2b being seated at a predetermined position of the first pin shaft seating portion 211 under the control of the controller 6. The fourth indicating member 39 includes a fourth indicating lamp, and the fourth indicating member 39 is configured to display whether the first pin shaft 23 of the second quick coupler 2b is installed in place.

[0111] The fifth indicating member 310 is configured to emit indicating information in response to the second pin shaft 210 of the second quick coupler 2b being seated at a predetermined position of the second pin shaft seating portion 212 under the control of the controller 6. The fifth indicating member 35 includes a fifth indicating lamp, and the fifth indicating member 310 is configured to display whether the second pin shaft 210 of the second quick coupler 2b is installed in place.

[0112] The sixth indicating member 311 is configured to emit indicating information in response to the locking pin 27 of the second quick coupler 2b being in the first position under the control of the controller 6. The sixth indicating member 311 includes a sixth indicating lamp, and the sixth indicating lamp is lit when the locking pin 27 of the second quick coupler 2b is switched to the first position that locks the second pin shaft 310.

[0113] In some embodiments, the manipulation device 3 further includes an open key 312 and a close key 313. The open key 312 is configured to send an instruction to the controller 6 to switch the locking pin 27 to the second position. The close key 313 is configured to send an instruction to the controller 6 to switch the locking pin 27 to the first position.

[0114] The two open keys (OPEN keys) 312 are pressed at the same time to open the locking pin 27, the close key 313 (CLOSE key) is used to close the locking pin 27 of the quick coupler, the hook and confirmation key 314 is used to force the locking pin 27 of the quick coupler to extend to close the lock when in the lifting mode.

[0115] In some embodiments, the first coupling 21 includes a first hydraulic fluid interface that communicates with a hydraulic system of the engineering machine, and the second coupling 22 includes a second hydraulic fluid interface that interfaces with the first hydraulic fluid interface,

[0116] The controller 6 is configured to open a pressure boosting solenoid valve of the hydraulic system to provide hydraulic fluid downstream of the quick coupler 2 in response to the instruction sent by the close key 313 to switch the locking pin 27 to the first position.

[0117] The controller 6 is configured to open the release solenoid valve of the hydraulic system to release the pressure of the hydraulic fluid of the hydraulic system of the working implement 1 in response to the instruction sent by the opening button 312 to switch the locking pin 27 to the second position.

[0118] In this embodiment, the hydraulic valve group 5 includes the solenoid valve for controlling the hydraulic actuator for driving the locking pin 27, the above-mentioned pressure boosting solenoid valve and the above-mentioned release solenoid valve.

[0119] The solenoid valve for controlling the locking pin is used to realize the opening and closing of the quick-change device locking pin 27; the pressure boosting solenoid valve is used to realize the system pressure boosting before the quick-change connection; and the system pressure release solenoid valve is used to control the release of the implement working pressure, facilitating the connection of the implement next time.

[0120] In some embodiments, the controller 6 is configured to open the release solenoid valve of the hydraulic system to release the pressure of the hydraulic fluid of the hydraulic system of the working implement 1 in response to the instruction sent by the opening button 312 to switch the locking pin 27 to the second position,

[0121] The controller 6 is configured to send the instruction to switch the locking pin 27 to the second position in response to the opening of the release solenoid valve.

[0122] Specifically, after the operator presses the opening button 312, the release solenoid valve is first opened, and after a predetermined event, the operator presses the opening button 312 again, and the controller judges the release solenoid valve, and if the release solenoid valve has been opened, the locking pin 27 is switched to the second position.

[0123] In some embodiments, the opening button 312 is two, and the two opening buttons 312 are pressed at the same time to send the instruction to switch the locking pin 27 to the second position to the controller, so as to prevent misoperation.

[0124] In some embodiments, the quick-change device 2 further includes an identification code 29 representing the type of the working implement 1 and an RFID detection sensor 28 for identifying the identification code 29, one of the identification code 29 and the RFID detection sensor 28 is installed on the first coupling 21, and the other is installed on the second coupling 22. The RFID detection sensor 28 is in signal connection with the controller 6, so that the controller 6 judges the type of the working implement 1 according to the identification code sensed by the RFID detection sensor 28. Alternatively, the RFID detection sensor 28 is installed on the first coupling 21.

[0125] The RFID detection sensor 28 and the identification code 29 constitute a tool identification system. The RFID detection sensor 28 is connected to the controller 6 through a communication line. The RFID detection sensor 28 writes and reads data to and from the identification code 29 located in the lower coupling member, so as to identify the type of the tool, monitor the state and working time of the tool, and automatically switch the engine speed and the hydraulic system flow of the excavator to the working speed and flow matched with the corresponding tool according to the obtained tool type. RFID is the abbreviation of Radio Frequency Identification.

[0126] According to another aspect of the present application, there is also provided an engineering machine comprising the above-mentioned engineering machine tool quick-change system.

[0127] According to another aspect of the present application, there is also provided a working method of the above-mentioned engineering machine tool quick-change system, the working method comprising a mounting method of combining the first coupling member 21 and the second coupling member 22, the mounting method comprising:

[0128] moving the first pin shaft 23 to the first pin shaft installation part 211;

[0129] judging whether the first pin shaft 23 is installed at a predetermined position of the first pin shaft installation part 211;

[0130] if the first pin shaft 23 is installed at the predetermined position, moving the second pin shaft 210 to the second pin shaft installation part 212;

[0131] judging whether the second pin shaft 210 is installed at a predetermined position of the second pin shaft installation part 211;

[0132] if the second pin shaft 210 is installed at the predetermined position, controlling the locking pin 27 to switch to the first position.

[0133] In some embodiments, the mounting method further comprises:

[0134] after the second pin shaft 210 is installed at the predetermined position, controlling the locking pin 27 to switch to the first position and controlling the hydraulic fluid to be provided to the downstream of the quick-change device 2.

[0135] In some embodiments, after the first pin shaft 23 is installed at the predetermined position, controlling the alarm component 32 to send an alarm information.

[0136] Specifically, Figure 6The control flow chart of the mounting process of the quick-change device of the present embodiment is shown. When the excavator is mounting the implement (universal connector 9) carried by the first quick-change device 1a, first, the quick-change device control system is powered on, the power and communication indicator light 31 on the control device 3 is turned on, the pilot control lever of the excavator is placed in the unlocked state to close the safety door 4, the first pin shaft mounting portion 211 of the first coupling member 21 of the quick-change device 2 is fitted into the first pin shaft 23 of the second coupling member 22 by operating the forearm of the excavator, the first indicator member 34 showing the state of the first pin shaft 23 of the first quick-change device 1a is turned on, and the audible and visual alarm 32 flashes and beeps at the same time, the second pin shaft mounting portion 212 of the first coupling member 21 of the quick-change device is fitted into the second pin shaft 210 of the second coupling member 22 by continuing to operate, the second indicator member 35 is turned on, when the first indicator member 34 and the second indicator member 35 of the first quick-change device are both turned on, it indicates that the pin shafts of the second coupling member 22 of the quick-change device are fitted in place with the first coupling member 21, at the same time, it is observed whether the first quick-change device operation indicator member 33 is lit or not, if not, the switching button 37 is pressed to make the first quick-change device operation indicator member 33 light up, then the shutdown button 313 is pressed, the controller 13 triggers the pressure increasing electromagnetic valve and the quick-change locking electromagnetic valve of the first quick-change device to be powered on at the same time, so that the quick-change device locking pin is extended, when the locking pin is extended in place, the locking pin is locked, at this time, when the third position sensor 25 of the first quick-change device detects the signal, it triggers the first quick-change device locking indicator light 36 to be turned on, at the same time, the alarm member 32 stops flashing and beeping, and the implement to be connected by the first quick-change device is mounted.

[0137] Further, when the excavator installs the implement carried by the second quick-change device 1b, i.e. installs the working implement under the universal quick-change device, first, the operator makes the first pin shaft mounting portion 211 of the first coupling member 21 of the second quick-change device abut against the first pin shaft 23 of the second coupling member 22, the front pin indicator light 39 of the second quick-change device 1b is turned on to show the first pin shaft state, at the same time, the alarm component 32 flashes the buzzer, and then the second pin shaft mounting portion 212 of the first coupling member 21 of the second quick-change device is abutted against the second pin shaft 210 of the second coupling member 22, the rear pin indicator light 310 of the second quick-change device is turned on, when the front pin indicator light 39 of the second quick-change device and the rear pin indicator light 310 of the second quick-change device are both turned on, it indicates that the pin shaft of the second coupling member 22 of the second quick-change device 1b is abutted against the first coupling member 21 in place, at the same time, it is observed whether the operation indicator light 38 of the second quick-change device is turned on, if not, the switching button 37 is pressed to make the operation indicator light 38 of the second quick-change device light up, and then the closing button 313 is pressed, the pressure increasing electromagnetic valve and the quick-change locking electromagnetic valve of the second quick-change device are triggered to be electrified at the same time, so that the locking pin 36 of the second quick-change device is extended, when the locking pin is extended in place, the locking pin is locked, at this time, the third position sensor 25 of the second quick-change device detects the signal, triggers the locking indicator light 311 of the second quick-change device to light up, at the same time, the alarm component 32 stops flashing the buzzer; at this time, the read-write head of the RFID detection sensor 28 reads the information of the code carrier 29, the type of the implement is obtained through the logical judgment of the controller 13, the control system automatically switches the engine speed and the hydraulic system flow of the excavator to the working speed and flow matched with the corresponding implement, and the installation of the implement carried by the second quick-change device 1b is completed.

[0138] According to another aspect of the present application, a working method of the working implement quick-change system of the engineering machinery is also provided, the working method comprises a dismounting method for separating the first coupling member 21 and the second coupling member 22, the dismounting method comprises:

[0139] receiving a starting dismounting instruction;

[0140] switching the locking pin 27 to the second position and opening the release electromagnetic valve of the hydraulic system to release the pressure of the hydraulic fluid of the hydraulic system.

[0141] Figure 7The control flow chart of the quick-change device dismounting process of the embodiment is shown. When the excavator needs to change the accessory, first, the operating state is brought to the second quick-change device operating state by pressing the switching button 37, then two opening buttons 312 on the operating device 3 are pressed simultaneously and released after 3 seconds, triggering the two-way system pressure release solenoid to be powered on, releasing the pressure of the quick-change system, preventing oil leakage of the pipe joint, and starting the alarm component 32 to flash and beep; after waiting for 2 seconds, the two opening buttons 312 are pressed simultaneously again, triggering the quick-change device locking solenoid to be powered off, so that the quick-change device locking pin 27 is opened, and then the next accessory changing or installing operation is performed; if the pressing time of the two opening buttons 312 is less than 3 seconds or the waiting time exceeds 2 seconds, the operation of opening the quick-change device locking pin 27 is invalid, and the control system triggers the two-way system pressure release solenoid to be powered off again and stops the alarm component 32 from flashing and beeping. If it is still necessary to open the locking pin 27 to change the accessory, the operation needs to be started again.

[0142] Further, when the excavator is in the whole process of changing the accessory, the alarm component 32 is always flashing and beeping. When the quick-change device belongs to the hook, the transportation mode, or the accessory is not connected for a long time and is in the equipment maintenance mode, the hook and the confirmation button 314 are pressed, so that the quick-change device locking pin 27 is locked by operating the closing button 313, and the control system sends a signal to stop the alarm component 32 from flashing and beeping after the quick-change device locking pin 27 is locked.

[0143] Further, when the excavator is in the process of changing the accessory, if the pin shaft indicator light does not light up or does not change after the two opening buttons 312 and the closing button 313 are operated repeatedly three times, the alarm component 32 starts to flash and beep, and the system enters the fault mode at this time. In the fault mode, all the buttons are invalid for the operation of the quick-change device, and the system needs to be repaired and started again after being powered on. If the quick-change device needs to be operated in an emergency, the two opening buttons 312 and the closing button 313 can be pressed simultaneously for 8 seconds, at which time the control system enters the emergency mode, and all the sound and light alarm lights and the pin shaft indicator light start to flash. If the quick-change device locking pin 27 needs to be opened, the switching button 37 is switched to the operating state corresponding to the quick-change device, and then the two opening buttons 312 are pressed simultaneously for 3 seconds, triggering the control system to open the quick-change device locking pin 27; if the quick-change device locking pin 27 needs to be closed, the switching button 37 is switched to the operating state corresponding to the quick-change device, and the closing button 313 is pressed, triggering the control system to close the quick-change device locking pin 27, and the alarm component 32 stops flashing and beeping after a delay of 5 seconds. If the emergency mode needs to be exited, the machine needs to be turned off and started again after being powered on.

[0144] The technical scheme of the embodiment achieves the following technical effects:

[0145] (1) Design an intelligent control scheme of a full-automatic quick-change device, only one person is needed to operate in the cab of the excavator, which improves the efficiency of changing the tool and saves a lot of manpower and time.

[0146] (2) The monitoring operation panel and control strategy design of the first quick-change device 1a and the second quick-change device 1b are provided, which is safer and more efficient in the process of changing the tool and operating the tool.

[0147] The above is only an exemplary embodiment of the present application, and is not intended to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A work implement quick change system of a construction machine, characterized by, The work attachment quick-change system comprises a work arm (8) and a work attachment (1) connected by a quick-change device (2) and a controller (6) connected with the quick-change device (2), the quick-change device (2) comprises a first quick-change device (2a), the quick-change device (2) comprises: a first coupling member (21) comprising a first pin shaft seating portion (211) and a second pin shaft seating portion (212) arranged along a first direction; a second coupling member (22) comprising a first pin shaft (23) matched with the first pin shaft seating portion (211) and a second pin shaft (210) matched with the second pin shaft seating portion (212); a locking pin (27) movably mounted on the first coupling member (21) to switch between a first position and a second position, the locking pin (27) in the first position locks the second pin shaft (210) in the second pin shaft seating portion (212), and the locking pin (27) in the second position allows the second pin shaft (210) to enter or leave the second pin shaft seating portion (212); a first position sensor (24) configured to detect whether the first pin shaft (23) is seated in a predetermined position of the first pin shaft seating portion (211); a second position sensor (26) configured to detect whether the second pin shaft (210) is seated in a predetermined position of the second pin shaft seating portion (212); the controller (6) is connected with the first position sensor (24) and the second position sensor (26) respectively, and is configured to control the locking pin (27) to switch from the second position to the first position after the first pin shaft (23) and the second pin shaft (210) are respectively seated in the predetermined positions of the first pin shaft seating portion (211) and the second pin shaft seating portion (212), the work attachment quick-change system further comprises a control device (3) connected with the controller (6), the control device (3) comprises: an alarm component (32) configured to issue an alarm information in response to the first pin shaft (23) of the first quick-change device (2a) being seated in the predetermined position of the first pin shaft seating portion (211) under the control of the controller (6); a first indication component (34) configured to issue an indication information in response to the first pin shaft (23) of the first quick-change device (2a) being seated in the predetermined position of the first pin shaft seating portion (211) under the control of the controller (6); a second indication component (35) configured to issue an indication information in response to the second pin shaft (210) of the first quick-change device (2a) being seated in the predetermined position of the second pin shaft seating portion (212) under the control of the controller (6); a third indication component (36) configured to issue an indication information in response to the locking pin (27) of the first quick-change device (2a) being in the first position under the control of the controller (6), The work tool quick change system further comprises a universal connector (9), the first quick change device (2a) is configured to connect the work arm (8) and the universal connector (9), the quick change device (2) further comprises a second quick change device (2b) configured to connect the universal connector (9) and the work tool (1), the controller (6) is signal connected with the first quick change device (2a) and the second quick change device (2b) respectively, and the control device (3) further comprises: a switching button (37) configured to send an instruction to the controller (6) to switch between controlling the first quick change device (2a) and controlling the second quick change device (2b); a first quick change device operation indication component (33) configured to issue indication information under the control of the controller (6) in response to the controller (6) controlling the first quick change device (2a); a second quick change device operation indication component (38) configured to issue indication information under the control of the controller (6) in response to the controller (6) controlling the second quick change device (2b); a fourth indication component (39) configured to issue indication information under the control of the controller (6) in response to the first pin shaft (23) of the second quick change device (2b) being arranged at a predetermined position of the first pin shaft arrangement portion (211); a fifth indication component (310) configured to issue indication information under the control of the controller (6) in response to the second pin shaft (210) of the second quick change device (2b) being arranged at a predetermined position of the second pin shaft arrangement portion (212); a sixth indication component (311) configured to issue indication information under the control of the controller (6) in response to the locking pin (27) of the second quick change device (2b) being in a first position.

2. The work tool quick change system of claim 1, wherein, Further comprising: a hydraulic actuating element connected with the locking pin (27) and configured to drive the locking pin (27) to switch between the first position and the second position; a locking solenoid valve in communication with the hydraulic actuating element to control the action of the hydraulic actuating element; the controller (6) is signal connected with the locking solenoid valve to control the locking pin (27) to switch between the first position and the second position.

3. The work tool quick change system of claim 1, wherein, The quick change device (2) further comprises a third position sensor (25) configured to detect whether the locking pin (27) is in the first position.

4. The work tool quick change system of claim 1, wherein, The control device (3) further comprises: an opening button (312) configured to send an instruction to the controller (6) to switch the locking pin (27) to the second position; and / or a closing button (313) configured to send an instruction to the controller (6) to switch the locking pin (27) to the first position.

5. The work tool quick change system of claim 4, wherein, The first coupling (21) comprises a first hydraulic fluid interface in communication with a hydraulic system of the engineering machinery, the second coupling (22) comprises a second hydraulic fluid interface in abutment with the first hydraulic fluid interface, The controller (6) is configured to open a pressure boosting electromagnetic valve of the hydraulic system to provide hydraulic fluid downstream of the quick change device (2) in response to an instruction sent by the closing button (313) to switch the locking pin (27) to the first position; and / or The controller (6) is configured to open a pressure releasing electromagnetic valve of the hydraulic system to release the pressure of the hydraulic fluid of the hydraulic system of the working tool (1) in response to an instruction sent by the opening button (312) to switch the locking pin (27) to the second position.

6. The working tool quick change system according to claim 5, wherein, After the controller (6) opens the pressure releasing electromagnetic valve to release the pressure of the hydraulic fluid of the hydraulic system of the working tool (1) in response to an instruction sent by the opening button (312) to switch the locking pin (27) to the second position, The controller (6) is configured to send an instruction to switch the locking pin (27) to the second position after opening the pressure releasing electromagnetic valve.

7. The work tool quick change system of claim 1, wherein, The quick change device (2) further comprises an identification code (29) representing the type of the working tool (1) and an RFID detection sensor (28) for identifying the identification code (29), one of the identification code (29) and the RFID detection sensor (28) is installed on the first coupling member (21) and the other is installed on the second coupling member (22).

8. A working machine, characterized in that The working tool quick change system of the engineering machinery according to any one of claims 1 to 7.

9. A method of working a work implement quick change system of a working machine according to any one of claims 1 to 7, characterized in that, The mounting method comprising combining the first coupling member (21) and the second coupling member (22), the mounting method comprising: moving the first pin shaft (23) to the first pin shaft installation portion (211); determining whether the first pin shaft (23) is installed at a predetermined position of the first pin shaft installation portion (211); if the first pin shaft (23) is installed at the predetermined position, moving the second pin shaft (210) to the second pin shaft installation portion (212); determining whether the second pin shaft (210) is installed at a predetermined position of the second pin shaft installation portion (212); if the second pin shaft (210) is installed at the predetermined position, controlling the locking pin (27) to switch to the first position.

10. The method of working according to claim 9, characterized in that, The mounting method further comprises: after the second pin shaft (210) is installed at the predetermined position, controlling the locking pin (27) to switch to the first position and controlling the hydraulic fluid to be provided downstream of the quick change device (2).

11. The method of claim 9, wherein, after the first pin shaft (23) is installed at the predetermined position, controlling the alarm component (32) to send an alarm information.

12. A method of working a work implement quick change system of a working machine according to any one of claims 1 to 7, characterized in that, The dismounting method comprising separating the first coupling member (21) and the second coupling member (22), the dismounting method comprising: receiving a dismounting instruction; switching the locking pin (27) to the second position and opening a pressure releasing electromagnetic valve of the hydraulic system to release the pressure of the hydraulic fluid of the hydraulic system.

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