CN115653951A - Hydraulic control system and control method for quick replacement of working machine and accessories - Google Patents
Hydraulic control system and control method for quick replacement of working machine and accessories Download PDFInfo
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- CN115653951A CN115653951A CN202211288310.9A CN202211288310A CN115653951A CN 115653951 A CN115653951 A CN 115653951A CN 202211288310 A CN202211288310 A CN 202211288310A CN 115653951 A CN115653951 A CN 115653951A
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000003921 oil Substances 0.000 claims abstract description 79
- 239000010729 system oil Substances 0.000 claims abstract description 16
- 230000008859 change Effects 0.000 claims description 14
- 230000001960 triggered effect Effects 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 10
- 238000005086 pumping Methods 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 210000003813 thumb Anatomy 0.000 description 3
- 230000000875 corresponding effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/02—Servomotor systems with programme control derived from a store or timing device; Control devices therefor
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to the technical field of engineering machinery, in particular to a hydraulic control system and a hydraulic control method for quick replacement of an operation machine and accessories. The control method of the accessory quick-change hydraulic control system comprises the steps that after a first instruction is obtained, the quick-change cut-off valve is electrified to establish system oil pressure, the quick-change pressure reducing valve is electrified to adjust working pressure of the accessory quick-change hydraulic control system, and the quick-change reversing valve is electrified to adjust the direction of an oil way so that a clamp can loosen an accessory; after a second instruction is obtained, the quick-change reversing valve is powered off, and the direction of the oil way is reset to enable the clamp to clamp the accessory; after the preset time, the quick-change cut-off valve and the quick-change pressure reducing valve are both powered off. According to the control method of the accessory quick-change hydraulic control system, the quick-change reversing valve, the quick-change stop valve and the quick-change pressure reducing valve are arranged on the accessory quick-change hydraulic control system, so that automatic replacement of accessories can be achieved, and after the second instruction is obtained and the preset time is passed, the quick-change stop valve and the quick-change pressure reducing valve are powered off, so that the accessory clamping and locking function can be achieved.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a hydraulic control system and a hydraulic control method for quick replacement of an operation machine and accessories.
Background
In the current excavator market, the excavator is required to be suitable for more and more working conditions, and various accessories are applied more and more frequently. Besides the bucket, the excavator can be provided with accessories such as a breaking hammer, a hydraulic shear, a thumb clamp, a grab bucket and the like, so that the excavator meets the requirement of mounting multifunctional accessories.
The quick-change device of the excavator mostly adopts a single pump to work, when a bucket is generally utilized to suppress pressure and overflow, a system generates high pressure, and then high-pressure hydraulic oil is introduced into a large cavity of a quick-change oil cylinder to realize the accessory clamping function. When the reversing electromagnetic valve is operated, high-pressure hydraulic oil flows into the small cavity of the quick-change oil cylinder, and the accessory loosening function is realized. The quick-change device has the following defects: the working pressure is single and unadjustable, and the main reason is that when the quick change works, a bucket is required to dig, suppress pressure and overflow, and the working pressure is the overflow pressure of the system, generally 340-380 Bar; the bucket excavating operation can not be disconnected in the process of loosening and clamping the accessories, and is complex to operate and difficult to control.
Disclosure of Invention
The invention provides a hydraulic control system and a hydraulic control method for quick change of an operating machine and accessories, which are used for solving the defects that the process of replacing the accessories is complicated and the pressure of a quick-change oil way is not adjustable in the prior art, realizing the automatic replacement of the accessories, adjusting the pressure of the quick-change oil way, and realizing the flow of high-pressure hydraulic oil to a large cavity of an oil cylinder, namely realizing the function of clamping and locking the accessories.
The invention provides a control method of a quick-change hydraulic control system, which comprises the following steps:
switching the accessory quick-change hydraulic control system to a quick-change mode;
after the first instruction is obtained, the quick-change cut-off valve is electrified to establish system oil pressure, the quick-change pressure reducing valve is electrified to adjust the working pressure of the accessory quick-change hydraulic control system, and the quick-change reversing valve is electrified to adjust the direction of an oil way so that the clamp loosens the accessory;
after a second instruction is obtained, the quick-change reversing valve is powered off, and the direction of the oil way is reset to enable the fixture to clamp the accessory; after the preset time, the quick-change cut-off valve and the quick-change pressure reducing valve are both powered off.
According to the control method of the quick-change hydraulic control system for the accessory, after the first instruction is obtained, the quick-change cut-off valve is powered on to establish system oil pressure, the quick-change pressure reducing valve is powered on to adjust working pressure of the quick-change hydraulic control system for the accessory, and before the quick-change reversing valve is powered on to adjust the direction of an oil path to enable the clamp to loosen the accessory, pressure unlocking information and direction unlocking information of the quick-change hydraulic control system for the accessory are obtained.
According to the control method of the quick-change hydraulic control system of the accessory, provided by the invention, in the step of acquiring the pressure unlocking information and the direction unlocking information of the quick-change hydraulic control system of the accessory, the pressure unlocking information of the quick-change hydraulic control system of the accessory is acquired first, and then the direction unlocking information is acquired.
According to the control method of the accessory quick-change hydraulic control system, the working pressure of the accessory quick-change hydraulic control system is set after the step of acquiring the pressure unlocking information and the direction unlocking information of the accessory quick-change hydraulic control system.
According to the control method of the quick-change hydraulic control system for the accessory, after the first instruction is obtained, the quick-change cut-off valve is powered on to establish system oil pressure, the quick-change pressure reducing valve is powered on to adjust working pressure of the quick-change hydraulic control system for the accessory, and the quick-change reversing valve is powered on to adjust the direction of an oil path so that the clamp can release the accessory, wherein the quick-change cut-off valve, the quick-change pressure reducing valve and the quick-change reversing valve are sequentially powered on.
According to the control method of the quick-change hydraulic control system for the accessories, after the second instruction is obtained, the quick-change reversing valve is powered off, the direction of the oil path is reset, the accessories are clamped by the clamp, and after the step that the quick-change cut-off valve and the quick-change pressure reducing valve are powered off after the preset time, the quick-change hydraulic control system for the accessories exits from the quick-change mode.
According to the control method of the quick-change hydraulic control system of the accessory, provided by the invention, the alarm is started under the condition that the quick-change hydraulic control system of the accessory is switched to a quick-change mode; and under the condition that the accessory quick-change hydraulic control system exits the quick-change mode, the alarm is turned off.
According to the control method of the quick-change hydraulic control system, the preset time is 3-8 s.
According to the control method of the quick-change hydraulic control system, the first instruction is that the handle key is triggered, and the second instruction is that the trigger action of the handle key is cancelled.
The invention also provides a quick-change hydraulic control system of the tool, which comprises:
the information acquisition module is used for acquiring mode information of the quick-change accessory hydraulic control system;
the sending module is used for sending a first instruction and a second instruction;
and the receiving module is used for receiving the first instruction and the second instruction and controlling the quick-change cut-off valve, the quick-change pressure reducing valve and the quick-change reversing valve to be powered on or powered off.
The present invention also provides a working machine that implements the method of controlling the accessory quick-change hydraulic control system as described above, and the working machine includes:
the quick-change oil way is provided with a quick-change cut-off valve, a quick-change pressure reducing valve and a quick-change reversing valve;
the oil cylinder is communicated with the quick-change oil way and comprises a large cavity and a small cavity, and the quick-change reversing valve is used for controlling oil to flow into or flow out of the large cavity and the small cavity;
and the main pump is used for pumping oil into the quick-change oil way.
According to the control method of the quick-change hydraulic control system for the accessory, the quick-change reversing valve, the quick-change stop valve and the quick-change pressure reducing valve are arranged on the quick-change hydraulic control system for the accessory, so that the accessory can be automatically replaced, the quick-change reversing valve is powered off after a second instruction is obtained, and the quick-change stop valve and the quick-change pressure reducing valve are powered off after a preset time, so that high-pressure hydraulic oil flows to a large cavity of an oil cylinder, and the function of clamping and locking the accessory is realized.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of an accessory quick-change hydraulic control system provided by the present invention;
FIG. 2 is a flow chart of a control method of the quick accessory-changing hydraulic control system provided by the invention;
fig. 3 is a flowchart of a control method of the quick accessory-change hydraulic control system provided by the present invention.
Reference numerals:
110. quickly replacing an oil way; 111. quickly replacing a cut-off valve; 112. a pressure reducing valve is quickly replaced; 113. quickly changing a reversing valve;
120. an oil cylinder; 121. a large cavity; 122. a small cavity;
130. a main pump; 140. and an oil tank.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
The following describes a work machine, an accessory quick-change hydraulic control system, and a control method according to the present invention with reference to fig. 1 to 3. The work machine may be an excavator, and the attachments of the excavator include a bucket, a breaking hammer, a hydraulic shear, a thumb clamp, a grab bucket, and the like, so that the excavator can meet the multifunctional requirement. For example, when the accessory on the excavator is a bucket, the excavator can be used for shoveling and conveying materials; when the attachment on the excavator is a grab bucket, the excavator can be used for excavating or grabbing materials; when the attachment on the excavator is a breaking hammer, the excavator can control the breaking hammer, so that the breaking hammer can break hard materials or hard rock stratums and the like. Because different attachments need to be configured with different working pressures, when the attachments of the excavator need to be replaced, the working pressure of the quick-change hydraulic attachment control system needs to be adjusted.
Referring to fig. 3, a control method of an accessory quick-change hydraulic control system according to an embodiment of the present invention includes:
s10: and switching the accessory quick-change hydraulic control system to a quick-change mode. The driver of the working machine can switch modes according to the working condition of the working machine, and in the quick-change mode, the driver or the operator can change accessories of the working machine. The quick-change mode is a mode selected when the quick-change accessory works, the mode CAN be defined by a display screen, then the mode is transmitted to the controller through CAN communication, and finally the controller recognizes that the mode is triggered to carry out subsequent corresponding actions. In operation, the quick-change mode is selected by the operator, for example, when the front attachment of the excavator needs to be replaced by the quick-change attachment, the operator may first select the operation mode of the excavator as the quick-change mode and then perform the operation of replacing the attachment. Specifically, when the excavator needs to replace the accessory, the accessory quick-change hydraulic control system can be switched to a quick-change mode; when the accessory does not need to be replaced, the accessory quick-change hydraulic control system can exit the quick-change mode and be switched to other modes. In other words, in the quick-change mode, the attachment of the work machine can be replaced.
S20: after the first command is obtained, the quick-change shut-off valve 111 is powered on to establish the system oil pressure. Referring to fig. 1, a quick-change shut-off valve 111 is arranged on an oil path of the accessory quick-change hydraulic control system. It should be noted that when the quick-change shut-off valve 111 is powered on, the accessory quick-change hydraulic control system can establish the system oil pressure, and the oil pressure of the whole system can be 340Bar-380Bar. For example, the system oil pressure of the accessory quick-change hydraulic control system according to the embodiment of the invention can be 350Bar. In some embodiments, the first instruction is an instruction issued by operating a key, for example, a driver may press a trigger key on the handle, that is, when the trigger key on the handle is pressed, the first instruction is issued; and when the trigger button on the handle is released, a second instruction is sent out. In other words, the action that the trigger key is pressed or triggered can be understood as an action that a first instruction is sent out, namely, when the trigger key on the handle is triggered or pressed, the first instruction is sent out; the action of releasing the trigger button can be understood as an action of sending a second instruction, that is, after the trigger button is released, the second instruction is sent.
The quick-change pressure reducing valve 112 is electrified to adjust the working pressure of the accessory quick-change hydraulic control system. Because different attachments need to be configured with different working pressures, when the attachments need to be replaced, the working pressure of the attachment quick-change hydraulic control system needs to be adjusted, and the quick-change pressure reducing valve 112 can adjust the working pressure of the attachment quick-change hydraulic control system. Referring to fig. 1, a quick-change pressure reducing valve 112 is arranged on an oil path of the accessory quick-change hydraulic control system, and the system oil pressure can be adjusted to the working oil pressure of the accessory by arranging the quick-change pressure reducing valve 112, so that after the accessory is replaced, the system oil pressure can meet the working requirement of the accessory.
In some embodiments, referring to fig. 2, when the trigger button on the handle is triggered, the driver may set the working pressure on the controller, the display or the control panel, that is, the setting of the working pressure may enable the quick-change pressure reducing valve 112 to be powered, so as to enable the system oil pressure to reach the set working pressure. For example, in the quick-change hydraulic control system, the working pressure range that can be set by the driver is 50Bar-220Bar, that is, the pressure adjustment range of the quick-change pressure reducing valve 112 can be 50Bar-220Bar.
It should be noted that the triggering manner of the "trigger button on the handle" is not particularly limited, and for example, the triggering manner may be a long-time button press, a continuous multiple press, or a display screen touch.
Referring to fig. 1, a quick-change reversing valve 113 is arranged on an oil path of the accessory quick-change hydraulic control system, and the quick-change reversing valve 113 can adjust the flow direction of oil, so that the clamping action or the loosening action of a clamp for clamping an accessory can be controlled. The quick-change reversing valve 113 is electrified to adjust the direction of the oil path so as to release the fixture. For example, the clamp may clamp the accessory when the quick-change selector valve 113 regulates the flow of oil in a first direction; when the quick-change selector valve 113 regulates the flow of oil in a second direction, which is opposite to the first direction, the clamp can be released from the attachment. When the quick change reversing valve 113 is powered off, the direction of the oil path is the first direction, and the fixture clamps the accessory at the moment. When the quick-change reversing valve 113 is electrified, the direction of the oil path is the second direction, and the fixture releases the accessory at the moment.
For example, after a trigger button on the handle is pressed, the quick-change shut-off valve 111 and the quick-change pressure reducing valve 112 are both powered on, the accessory quick-change hydraulic control system is in a high-pressure state, meanwhile, the quick-change reversing valve 113 is powered on, and at the moment, high-pressure hydraulic oil flows to the small cavity 122 of the oil cylinder 120, so that the clamp is unlocked and the accessory is loosened. When the quick change reversing valve 113 is powered off, the high-pressure hydraulic oil flows to the large cavity 121 of the oil cylinder 120, and the fixture clamping accessory is realized.
S30: after the second instruction is obtained, the quick change reversing valve 113 is de-energized, the oil path direction is reset (namely, the oil path direction is restored to the first direction), so that the clamp clamps the accessory, and after the preset time, the quick change cut-off valve 111 and the quick change pressure reducing valve 112 are both de-energized. In some embodiments, the preset time may be 3s to 8s, and preferably, the preset time may be 5s. Therefore, sufficient time can be reserved for oil liquid backflow.
It should be noted that, after the quick-change reversing valve 113 is powered off, the direction of the oil path can be returned to the first direction, and at this time, the fixture clamps the accessory. In order to ensure that the clamp completes the clamping action and the clamp is locked in the clamping state, in some examples, after the quick-change reversing valve 113 is powered off, the quick-change shut-off valve 111 and the quick-change pressure reducing valve 112 are powered off again after a preset time. Thus, the high-pressure hydraulic oil flows to the large cavity 121 of the oil cylinder 120, namely, the accessory clamping and locking function is realized. For example, after the accessory is replaced, the trigger button on the handle is released, the quick-change reversing valve 113 is powered off, and meanwhile, after the quick-change reversing valve 113 is powered off for 5 seconds (namely, the preset time is 5 seconds), the quick-change cut-off valve 111 and the quick-change pressure reducing valve 112 are powered off again, and in 5 seconds after the quick-change reversing valve 113 is powered off, high-pressure hydraulic oil flows to the large cavity 121 of the oil cylinder 120, so that the accessory clamping and locking function is realized.
According to the control method of the accessory quick-change hydraulic control system provided by the embodiment of the invention, the quick-change reversing valve 113, the quick-change stop valve 111 and the quick-change pressure reducing valve 112 are arranged on the accessory quick-change hydraulic control system, so that the accessory can be automatically replaced, after a second instruction is obtained, the quick-change reversing valve 113 is powered off, and then the quick-change stop valve 111 and the quick-change pressure reducing valve 112 are powered off after a preset time, so that high-pressure hydraulic oil can flow to the large cavity 121 of the oil cylinder 120, namely the accessory clamping and locking function is realized.
According to some embodiments of the present invention, after the first instruction is obtained, the quick-change shut-off valve 111 is powered to establish the system oil pressure, the quick-change pressure-reducing valve 112 is powered to adjust the working pressure of the accessory quick-change hydraulic control system, and the quick-change direction-changing valve 113 is powered to adjust the direction of the oil path so as to obtain the pressure unlocking information and the direction unlocking information of the accessory quick-change hydraulic control system before the step of releasing the accessory by the clamp, that is, before step S20. Thus, the accessory can be safely replaced.
In some embodiments, when it is determined that the pressure unlocking key is triggered and it is determined that the direction unlocking key is also triggered, step S20 may be entered. When at least one of the pressure release key and the direction release key is not triggered, the accessory quick-change hydraulic control system cannot proceed to step S20. It can be understood that only when the pressure unlocking key and the direction unlocking key are triggered and after the first instruction is obtained, the quick-change shut-off valve 111 is powered to establish the oil pressure of the system, the quick-change pressure reducing valve 112 is powered to adjust the working pressure of the accessory quick-change hydraulic control system, and the quick-change reversing valve 113 is powered to adjust the direction of the oil path so as to release the clamp from the accessory.
In some embodiments, referring to fig. 2, after the accessory quick-change hydraulic control system is switched to the quick-change mode, in the step of acquiring the pressure unlocking information and the direction unlocking information of the accessory quick-change hydraulic control system, it is determined whether the pressure unlocking key is triggered first, and then it is determined whether the direction unlocking key is triggered.
In some embodiments, referring to fig. 2, after the step of obtaining the pressure unlocking information and the direction unlocking information of the accessory quick-change hydraulic control system, the working pressure of the accessory quick-change hydraulic control system is set. This ensures smooth replacement of the accessory.
According to some embodiments of the present invention, after the first instruction is obtained, the quick-change shut-off valve 111 is powered to establish the system oil pressure, the quick-change pressure-reducing valve 112 is powered to adjust the working pressure of the accessory quick-change hydraulic control system, and the quick-change direction-changing valve 113 is powered to adjust the direction of the oil path so as to release the clamp from the accessory, that is, in step S20, the quick-change shut-off valve 111, the quick-change pressure-reducing valve 112, and the quick-change direction-changing valve 113 are sequentially powered. Thereby, the logic control rationality of the control method can be improved. In some embodiments, the quick-change shut-off valve 111, the quick-change pressure relief valve 112, and the quick-change reversing valve 113 may each be solenoid valves.
According to some embodiments of the invention, after the second instruction is obtained, the quick-change reversing valve 113 is de-energized, the direction of the oil path is reset, so that the fixture clamps the accessory, and after a preset time, the accessory quick-change hydraulic control system exits the quick-change mode after the steps of de-energizing the quick-change shut-off valve 111 and the quick-change pressure reducing valve 112. The excavator can thus enter other modes for other operations.
In order to enable the excavator to have a prompt function when the accessory is replaced, according to some embodiments of the invention, the alarm is started under the condition that the accessory quick-change hydraulic control system is switched to a quick-change mode; and under the condition that the accessory quick-change hydraulic control system exits the quick-change mode, turning off the alarm. That is, when the accessory quick-change hydraulic control system is in the quick-change mode, the alarm gives an alarm. The form of the alarm is not particularly limited, and for example, the alarm may be an audio alarm or a light alarm.
The accessory quick-change hydraulic control system according to the embodiment of the invention comprises: the device comprises an information acquisition module, a sending module and a receiving module. The information acquisition module is used for acquiring mode information of the quick-change accessory hydraulic control system; the sending module is used for sending a first instruction and a second instruction; the receiving module is used for receiving the first instruction and the second instruction and controlling the quick-change shut-off valve 111, the quick-change pressure-reducing valve 112 and the quick-change reversing valve 113 to be powered on or powered off. It should be noted that, after the receiving module receives the first instruction, the quick-change shut-off valve 111 is powered to establish the system oil pressure, the quick-change pressure-reducing valve 112 is powered to adjust the working pressure of the accessory quick-change hydraulic control system, and the quick-change reversing valve 113 can adjust the flow direction of the oil, so as to control the clamp for clamping the accessory.
And after the receiving module receives the second instruction, the quick-change reversing valve 113 loses power, and the quick-change cut-off valve 111 and the quick-change pressure reducing valve 112 lose power after 5 seconds. Therefore, in 5s after the quick-change reversing valve 113 is powered off, the high-pressure hydraulic oil flows to the large cavity 121 of the oil cylinder 120, and the accessory clamping and locking function is realized.
According to the accessory quick-change hydraulic control system provided by the embodiment of the invention, the quick-change reversing valve 113, the quick-change cut-off valve 111 and the quick-change pressure reducing valve 112 are arranged on the accessory quick-change hydraulic control system, so that automatic replacement of accessories can be realized, after a second instruction is obtained, the quick-change reversing valve 113 is powered off, and then after a preset time, the quick-change cut-off valve 111 and the quick-change pressure reducing valve 112 are powered off, so that high-pressure hydraulic oil can flow to the large cavity 121 of the oil cylinder 120, namely, the accessory clamping and locking function is realized.
According to the working machine of the embodiment of the present invention, the working machine implements the control method of the quick accessory change hydraulic control system as described above. The work machine may be an excavator, and the attachments of the excavator include a bucket, a breaking hammer, a hydraulic shear, a thumb clamp, a grab bucket, and the like, so that the excavator can meet the multifunctional requirement. For example, when the accessory on the excavator is a bucket, the excavator can be used for shoveling and conveying materials; when the attachment on the excavator is a grab bucket, the excavator can be used for excavating or grabbing materials; when the attachment on the excavator is a breaking hammer, the excavator can be used for breaking hard materials or rock strata and the like. Because different working pressures are required to be configured for different accessories, when the accessories of the excavator need to be replaced, the working pressure of the accessory quick-change hydraulic control system needs to be adjusted.
Referring to fig. 1, a work machine may include: the quick-change oil circuit 110, the oil cylinder 120, the main pump 130 and the oil tank 140. The quick-change oil path 110 is provided with a quick-change shut-off valve 111, a quick-change pressure reducing valve 112 and a quick-change reversing valve 113. The oil cylinder 120 is communicated with the quick-change oil path 110, the oil cylinder 120 comprises a large cavity 121 and a small cavity 122, and the quick-change reversing valve 113 is used for controlling oil to flow into or flow out of the large cavity 121 and the small cavity 122. For example, after the quick-change reversing valve 113 is powered off, in order to ensure that the clamp completes the clamping action, after the quick-change reversing valve 113 is powered off, and after a preset time, the quick-change cut-off valve 111 and the quick-change pressure reducing valve 112 are powered off again, at this time, the direction of the oil path is the first direction, and the high-pressure hydraulic oil flows to the large cavity 121 of the oil cylinder 120, namely, the accessory clamping and locking function is realized; for another example, after the trigger button on the handle is pressed, the quick-change shut-off valve 111 and the quick-change pressure reducing valve 112 are both powered on, the accessory quick-change hydraulic control system is in a high-pressure state, the quick-change reversing valve 113 is powered on, oil flows along the second direction, and meanwhile, high-pressure hydraulic oil flows to the small cavity 122 of the oil cylinder 120, so that the accessory unlocking and loosening functions are realized. The main pump 130 is used for pumping oil into the quick-change oil path 110, and the oil tank 140 is used for collecting the oil in the quick-change oil path 110.
According to the working machine provided by the embodiment of the invention, the quick-change reversing valve 113, the quick-change stop valve 111 and the quick-change pressure reducing valve 112 are arranged on the accessory quick-change hydraulic control system, so that automatic replacement of accessories can be realized, after a second instruction is obtained, the quick-change reversing valve 113 is powered off, and then after a preset time, the quick-change stop valve 111 and the quick-change pressure reducing valve 112 are powered off, so that high-pressure hydraulic oil can flow to the large cavity 121 of the oil cylinder 120, namely the accessory clamping and locking function is realized.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. A control method of a hydraulic control system with a quick change function is characterized by comprising the following steps:
switching the accessory quick-change hydraulic control system to a quick-change mode;
after the first instruction is obtained, the quick-change cut-off valve is electrified to establish system oil pressure, the quick-change pressure reducing valve is electrified to adjust the working pressure of the accessory quick-change hydraulic control system, and the quick-change reversing valve is electrified to adjust the direction of an oil way so that the clamp can loosen the accessory;
after a second instruction is obtained, the quick-change reversing valve is powered off, and the direction of the oil way is reset to enable the fixture to clamp the accessory; after the preset time, the quick-change cut-off valve and the quick-change pressure reducing valve are both powered off.
2. The method for controlling the hydraulic control system with the quick-change accessory according to claim 1, wherein after the first instruction is obtained, the quick-change shut-off valve is powered on to establish the system oil pressure, the quick-change pressure-reducing valve is powered on to adjust the working pressure of the hydraulic control system with the quick-change accessory, and before the step of powering the quick-change reversing valve to adjust the direction of the oil path to enable the clamp to loosen the accessory, pressure unlocking information and direction unlocking information of the hydraulic control system with the quick-change accessory are obtained.
3. The method according to claim 2, wherein in the step of obtaining the pressure unlocking information and the direction unlocking information of the hydraulic control system with quick accessory changing, the pressure unlocking information of the hydraulic control system with quick accessory changing is obtained first, and then the direction unlocking information is obtained.
4. The method for controlling the hydraulic control system with the quick accessory change according to claim 2, wherein after the step of obtaining the pressure unlocking information and the direction unlocking information of the hydraulic control system with the quick accessory change, the working pressure of the hydraulic control system with the quick accessory change is set.
5. The method for controlling the quick-change hydraulic accessory control system according to claim 1, wherein after the first command is obtained, the quick-change shut-off valve is powered to establish the system oil pressure, the quick-change pressure reducing valve is powered to adjust the working pressure of the quick-change hydraulic accessory control system, and the quick-change reversing valve is powered to adjust the direction of the oil path so that the clamp can be loosened from the accessory, wherein the quick-change shut-off valve, the quick-change pressure reducing valve and the quick-change reversing valve are powered sequentially.
6. The method for controlling the quick-change hydraulic accessory control system according to claim 1, wherein after the second instruction is obtained, the quick-change reversing valve is de-energized, the direction of the oil path is reset, a clamp clamps the accessory, and after a preset time, the quick-change hydraulic accessory control system exits the quick-change mode after the quick-change shut-off valve and the quick-change pressure reducing valve are de-energized.
7. The method for controlling the quick accessory-change hydraulic control system according to claim 6, wherein the alarm is activated on condition that the quick accessory-change hydraulic control system is switched to the quick-change mode; and under the condition that the accessory quick-change hydraulic control system exits the quick-change mode, the alarm is turned off.
8. The method for controlling the quick accessory-change hydraulic control system according to claim 1, wherein the preset time is 3s to 8s.
9. The method for controlling the quick-change hydraulic accessory control system according to claim 1, wherein the first command is that a handle button is triggered, and the second command is that the trigger action of the handle button is cancelled.
10. The utility model provides a utensil quick change hydraulic control system which characterized in that includes:
the information acquisition module is used for acquiring mode information of the quick-change accessory hydraulic control system;
the sending module is used for sending a first instruction and a second instruction;
and the receiving module is used for receiving the first instruction and the second instruction and controlling the quick-change cut-off valve, the quick-change pressure reducing valve and the quick-change reversing valve to be powered on or powered off.
11. A working machine that implements a control method of the accessory quick-change hydraulic control system according to any one of claims 1 to 9, and that comprises:
the quick-change oil way is provided with a quick-change cut-off valve, a quick-change pressure reducing valve and a quick-change reversing valve;
the oil cylinder is communicated with the quick-change oil way and comprises a large cavity and a small cavity, and the quick-change reversing valve is used for controlling oil to flow into or flow out of the large cavity and the small cavity;
and the main pump is used for pumping oil into the quick-change oil way.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211288310.9A CN115653951A (en) | 2022-10-20 | 2022-10-20 | Hydraulic control system and control method for quick replacement of working machine and accessories |
| PCT/CN2023/123396 WO2024082975A1 (en) | 2022-10-20 | 2023-10-08 | Working machine, accessory rapid replacement hydraulic control system, and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211288310.9A CN115653951A (en) | 2022-10-20 | 2022-10-20 | Hydraulic control system and control method for quick replacement of working machine and accessories |
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| CN115653951A true CN115653951A (en) | 2023-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211288310.9A Pending CN115653951A (en) | 2022-10-20 | 2022-10-20 | Hydraulic control system and control method for quick replacement of working machine and accessories |
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| CN (1) | CN115653951A (en) |
| WO (1) | WO2024082975A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024082975A1 (en) * | 2022-10-20 | 2024-04-25 | 上海三一重机股份有限公司 | Working machine, accessory rapid replacement hydraulic control system, and control method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015015809A1 (en) * | 2015-12-07 | 2017-06-08 | Liebherr-Hydraulikbagger Gmbh | Valve unit for quick coupler and quick-change system |
| CN107419765B (en) * | 2017-06-28 | 2021-03-23 | 中联重科股份有限公司渭南分公司 | Multifunctional equipment switching control equipment, control system and accessory |
| CN209011191U (en) * | 2018-10-18 | 2019-06-21 | 上海三一重机股份有限公司 | Hydraulic crawler excavator multifunctional quick control system and hydraulic crawler excavator |
| CN211423048U (en) * | 2019-12-30 | 2020-09-04 | 徐州徐工挖掘机械有限公司 | Quick-change hydraulic system and engineering machinery |
| CN113847296A (en) * | 2021-10-12 | 2021-12-28 | 中联重科土方机械有限公司 | Quick change device control valve group, hydraulic system and excavator |
| CN114934559B (en) * | 2022-06-07 | 2023-11-14 | 柳州柳工挖掘机有限公司 | Quick change device disengagement control system, method and engineering machinery |
| CN115653951A (en) * | 2022-10-20 | 2023-01-31 | 上海三一重机股份有限公司 | Hydraulic control system and control method for quick replacement of working machine and accessories |
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2022
- 2022-10-20 CN CN202211288310.9A patent/CN115653951A/en active Pending
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024082975A1 (en) * | 2022-10-20 | 2024-04-25 | 上海三一重机股份有限公司 | Working machine, accessory rapid replacement hydraulic control system, and control method |
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| WO2024082975A1 (en) | 2024-04-25 |
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