CN110820829A - Broken confluence control system and excavator - Google Patents
Broken confluence control system and excavator Download PDFInfo
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- CN110820829A CN110820829A CN201911145431.6A CN201911145431A CN110820829A CN 110820829 A CN110820829 A CN 110820829A CN 201911145431 A CN201911145431 A CN 201911145431A CN 110820829 A CN110820829 A CN 110820829A
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- way valve
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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
- E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
- E02F3/966—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements of hammer-type tools
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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
- E02F3/425—Drive systems for dipper-arms, backhoes or the like
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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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- 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
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
-
- 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
- E02F9/2278—Hydraulic circuits
- E02F9/2285—Pilot-operated systems
-
- 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
- E02F9/2278—Hydraulic circuits
- E02F9/2292—Systems with two or more pumps
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Shovels (AREA)
- Fluid-Pressure Circuits (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a crushing confluence control system and an excavator, and relates to the technical field of excavators. The crushing and converging control system comprises a first oil pump, a second oil pump, a crushing hammer, a movable arm oil cylinder, a pilot electromagnetic valve, a first multi-way valve and a second multi-way valve. The first oil pump is connected with the breaking hammer through a first multi-way valve, a confluence oil duct is arranged between the first oil pump and the first multi-way valve, the second oil pump is connected with a second multi-way valve, the second multi-way valve is respectively connected with the movable arm oil cylinder and the confluence oil duct, and the pilot electromagnetic valve is connected with the second multi-way valve. Compared with the prior art, the crushing and converging control system provided by the invention adopts the second multi-way valve connected with the movable arm oil cylinder and the converging oil duct respectively and the pilot electromagnetic valve connected with the second multi-way valve, so that the redundant flow of the movable arm oil cylinder can be supplemented to the crushing hammer during compound operation, the converging control of the crushing hammer is realized, the condition that the working efficiency of the crushing hammer is reduced is avoided, and the crushing and converging control system is reliable and practical.
Description
Technical Field
The invention relates to the technical field of excavators, in particular to a crushing and converging control system and an excavator.
Background
In the hammer breaking work of an excavator, a combined work of two actions of breaking and striking and boom depressing is a common work state. Generally, an excavator includes a first pump to which oil is supplied when a boom is pressed down, and a second pump to which oil is supplied when a crushing stroke is hit. When the breaking hammer acts independently, the second pump supplies breaking hammer independently, the first pump is not started, and the second pump can consume most of the power of the system at the moment so as to meet the flow pressure requirement of the breaking hammer. When the combined operation of crushing and striking and movable arm pressing is carried out, the first pump supplies the movable arm to press down, redundant flow is overflowed, the second pump supplies the crushing and striking, and at the moment, because the first pump consumes partial power of the system, the power of the second pump is relatively reduced, the flow pressure requirement of the crushing hammer cannot be completely met, and the crushing and striking efficiency is greatly reduced during the combined operation.
In view of the above, it is important to design and manufacture a crushing and merging control system and an excavator, which can ensure the efficiency of crushing and striking, especially in the production of the excavator.
Disclosure of Invention
The invention aims to provide a crushing and converging control system which can supplement redundant flow of the pressing of a movable arm to crushing and striking during composite operation, realize converging control on the crushing and striking, avoid the situation of reduction of the crushing and striking efficiency and is reliable and practical.
Another object of the present invention is to provide an excavator in which a crushing and converging control system can supplement an excessive flow rate of boom depression to crushing and striking during combined work, realize converging control of crushing and striking, avoid a reduction in crushing and striking efficiency, and is reliable and practical.
The invention is realized by adopting the following technical scheme.
A breaking and converging control system comprises a first oil pump, a second oil pump, a breaking hammer, a movable arm oil cylinder, a pilot electromagnetic valve, a first multi-way valve and a second multi-way valve, wherein the first oil pump is connected with the breaking hammer through a first multi-way valve, a converging oil duct is arranged between the first oil pump and the first multi-way valve, the second oil pump is connected with the second multi-way valve, the second multi-way valve is respectively connected with the movable arm oil cylinder and the converging oil duct, the pilot electromagnetic valve is connected with the second multi-way valve, and the pilot electromagnetic valve can regulate and control the valve position of the second multi-way valve when the breaking hammer and the movable arm oil cylinder work simultaneously so that one part of hydraulic oil pumped by the second oil pump is input into the movable arm oil cylinder.
Further, the second multi-way valve is provided with a first oil port, a second oil port and a third oil port, the first oil port is connected with the second oil pump, the second oil port is connected with the confluence oil duct, and the third oil port is connected with the movable arm oil cylinder.
Furthermore, the crushing confluence control system further comprises a control oil duct and a confluence valve, the control oil duct comprises a main oil duct, a first branch oil duct and a second branch oil duct, the main oil duct is respectively connected with the first branch oil duct and the second branch oil duct, the main oil duct is connected with a second oil port, the first branch oil duct is connected with the confluence oil duct, the second branch oil duct is connected with a first oil return tank, and the confluence valve is installed on the second branch oil duct.
Furthermore, the crushing confluence control system also comprises a selection electromagnetic valve, the selection electromagnetic valve is connected with the confluence valve, and the selection electromagnetic valve can control the confluence valve to be opened or closed.
Further, broken confluence control system still includes the check valve, and the check valve is installed on the confluence oil duct, and sets up between first branch oil duct and first oil pump.
Furthermore, the second multi-way valve is also provided with a fourth oil port, the movable arm oil cylinder is provided with a rodless cavity and a rod cavity, the rod cavity is connected with the third oil port, and the rodless cavity is connected with the fourth oil port.
Furthermore, the breaking hammer is provided with an overflow valve in parallel, the breaking hammer and the overflow valve are both connected with the first multi-way valve, and the breaking hammer and the overflow valve are both connected with the second oil return oil tank.
Further, be provided with first proportion relief pressure valve in the first oil pump, be provided with second proportion relief pressure valve in the second oil pump, first oil pump and second oil pump all are connected with the oil tank.
Furthermore, the crushing and converging control system also comprises a controller, and the controller is respectively connected with the pilot electromagnetic valve, the first proportional pressure reducing valve and the second proportional pressure reducing valve.
The first oil pump is connected with the breaking hammer through the first multi-way valve, a confluence oil channel is arranged between the first oil pump and the first multi-way valve, the second oil pump is connected with the second multi-way valve, the second multi-way valve is respectively connected with the movable arm oil cylinder and the confluence oil channel, the pilot solenoid valve is connected with the second multi-way valve, and the pilot solenoid valve can regulate and control the valve position of the second multi-way valve when the breaking hammer and the movable arm oil cylinder work simultaneously, so that one part of hydraulic oil extracted by the second oil pump is input into the movable arm oil cylinder, and the other part of hydraulic oil is input into the confluence oil channel.
The crushing and converging control system and the excavator provided by the invention have the following beneficial effects:
according to the crushing and converging control system provided by the invention, a first oil pump is connected with a crushing hammer through a first multi-way valve, a converging oil passage is arranged between the first oil pump and the first multi-way valve, a second oil pump is connected with a second multi-way valve, the second multi-way valve is respectively connected with a movable arm oil cylinder and the converging oil passage, and a pilot electromagnetic valve is connected with the second multi-way valve and can regulate and control the valve position of the second multi-way valve when the crushing hammer and the movable arm oil cylinder work simultaneously, so that one part of hydraulic oil extracted by the second oil pump is input into the movable arm oil cylinder, and the other part of hydraulic oil is input into. Compared with the prior art, the crushing and converging control system provided by the invention adopts the second multi-way valve connected with the movable arm oil cylinder and the converging oil duct respectively and the pilot electromagnetic valve connected with the second multi-way valve, so that the redundant flow of the movable arm oil cylinder can be supplemented to the crushing hammer during compound operation, the converging control of the crushing hammer is realized, the condition that the working efficiency of the crushing hammer is reduced is avoided, and the crushing and converging control system is reliable and practical.
According to the excavator provided by the invention, the crushing and converging control system in the excavator can supplement the redundant flow of the movable arm oil cylinder to the crushing hammer during combined operation, realizes converging control on the crushing hammer, avoids the condition that the working efficiency of the crushing hammer is reduced, and is reliable and practical.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a crushing confluence control system according to an embodiment of the present invention;
FIG. 2 is a block diagram of a crushing and merging control system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram illustrating that a second multi-way valve is respectively connected to a control oil passage and a boom cylinder in the crushing and converging control system according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a crushing and merging control system provided in an embodiment of the present invention in a first working state;
fig. 5 is a schematic structural diagram of a crushing confluence control system in a second working state according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of the crushing confluence control system in a third working state according to the embodiment of the present invention.
Icon: 100-a crushing confluence control system; 110-a first oil pump; 120-a second oil pump; 130-breaking hammer; 140-boom cylinder; 141-rodless cavity; 142-a rod cavity; 150-a pilot solenoid valve; 160-a first multiplex valve; 170-a second multiplex valve; 171-a first oil port; 172-a second oil port; 173-third oil port; 174-fourth oil port; 180-control oil ducts; 181-main oil gallery; 182-a first branch oil gallery; 183-second branch oil gallery; 190-a confluence valve; 200-selecting an electromagnetic valve; 210-a one-way valve; 220-relief valve; 230-a controller; 240-a first return oil tank; 250-a second return oil tank; 260-oil tank; 270-a converging oil passage; 280-electromagnetic valve group; 290-a first proportional pressure relief valve; 300-second proportional pressure relief valve.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "inside", "outside", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally put in use of products of the present invention, and are only for convenience of description and simplicity of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.
Examples
Referring to fig. 1 and 2 in combination, an excavator (not shown) for performing an excavating operation is provided according to an embodiment of the present invention. The crushing confluence control system 100 in the system can supplement the redundant flow of the downward pressing of the movable arm to the crushing striking during the composite operation, realizes confluence control of the crushing striking, avoids the condition of reduction of the crushing striking efficiency, and is reliable and practical. In this embodiment, the excavator includes an engine body (not shown) and a crushing and merging control system 100, the crushing and merging control system 100 being installed in the engine body, and the crushing and merging control system 100 being used for hydraulic control.
The breaking and merging control system 100 includes a first oil pump 110, a second oil pump 120, a breaking hammer 130, a boom cylinder 140, a pilot solenoid valve 150, a first multiplex valve 160, a second multiplex valve 170, a control oil passage 180, a merging valve 190, a selection solenoid valve 200, a check valve 210, an overflow valve 220, a controller 230, a first return oil tank 240, a second return oil tank 250, and an oil tank 260. The first oil pump 110 and the second oil pump 120 are both connected to the oil tank 260. The oil tank 260 is used for storing hydraulic oil, and the first oil pump 110 and the second oil pump 120 can pump out the hydraulic oil in the oil tank 260. The first oil pump 110 is connected with the breaking hammer 130 through the first multi-way valve 160, a confluence oil passage 270 is formed between the first oil pump 110 and the first multi-way valve 160, the first oil pump 110 can pump hydraulic oil into the confluence oil passage 270, and the hydraulic oil in the confluence oil passage 270 can enter the breaking hammer 130 through the first multi-way valve 160 to control the breaking hammer 130 to perform a breaking and striking action. The second oil pump 120 is connected to the second multi-way valve 170, the second multi-way valve 170 is respectively connected to the boom cylinder 140 and the merging oil passage 270, the second oil pump 120 can pump a part of hydraulic oil into the boom cylinder 140 to control the boom cylinder 140 to perform a boom depressing action, and the second oil pump 120 can pump another part of hydraulic oil into the merging oil passage 270 to increase the flow rate of the hydraulic oil in the merging oil passage 270, so as to implement merging control on the breaking hammer 130. The pilot solenoid valve 150 is connected to the second multi-way valve 170, the pilot solenoid valve 150 can control the second multi-way valve 170 to switch the valve position, and the pilot solenoid valve 150 can control the valve position of the second multi-way valve 170 when the breaking hammer 130 and the boom cylinder 140 simultaneously operate, so that a part of the hydraulic oil pumped by the second oil pump 120 is input to the boom cylinder 140, and the other part is input to the merging oil passage 270, thereby implementing merging control of the breaking hammer 130.
It should be noted that the control oil passage 180 is connected between the merging oil passage 270 and the second multi-way valve 170, the control oil passage 180 is further connected with the first oil return tank 240, the merging valve 190 is installed on the control oil passage 180 and is connected with the selection solenoid valve 200, and the selection solenoid valve 200 can control the merging valve 190 to open or close. When the breaking hammer 130 or the boom cylinder 140 operates alone, the confluence valve 190 is opened, a part of the hydraulic oil pumped by the second oil pump 120 is input to the boom cylinder 140, and another part of the hydraulic oil flows back to the first oil return tank 240 through the confluence valve 190; when the breaking hammer 130 and the boom cylinder 140 perform combined operation, the confluence valve 190 is closed to prevent return of hydraulic oil, and at this time, a part of the hydraulic oil pumped by the second oil pump 120 is input to the boom cylinder 140 and another part of the hydraulic oil is input to the confluence oil passage 270 to achieve confluence.
Referring to fig. 3, it is noted that the second multiplex valve 170 is provided with a first oil port 171, a second oil port 172, a third oil port 173 and a fourth oil port 174. The first oil port 171 is connected to the second oil pump 120, the second oil port 172 is connected to the merged oil passage 270, and the third oil port 173 and the fourth oil port 174 are connected to the boom cylinder 140. Specifically, the boom cylinder 140 is provided with a rodless chamber 141 and a rod chamber 142, the rod chamber 142 is connected to the third oil port 173, and the rodless chamber 141 is connected to the fourth oil port 174, so that oil is introduced into and discharged from the boom cylinder 140, and thereby the boom depressing operation is completed.
The control oil passage 180 includes a main oil passage 181, a first branch oil passage 182, and a second branch oil passage 183. The main oil gallery 181 is connected to the first and second branch oil galleries 182 and 183, respectively, and both the first and second branch oil galleries 182 and 183 communicate with the main oil gallery 181. The main oil gallery 181 is connected to the second oil port 172, the first branch oil gallery 182 is connected to the converging oil gallery 270, the second branch oil gallery 183 is connected to the first oil return tank 240, and the second oil pump 120 is capable of pumping hydraulic oil from the first oil port 171 into the second multi-way valve 170, and then outputting the hydraulic oil to the main oil gallery 181 through the second oil port 172, and then entering the first branch oil gallery 182 or the second branch oil gallery 183. The confluence valve 190 is installed on the second branch oil gallery 183, and the confluence valve 190 can open or close the second branch oil gallery 183 to allow the hydraulic oil to flow back to the first return oil tank 240 or to join the confluence oil gallery 270.
With continued reference to fig. 1 and 2, it should be noted that the check valve 210 is installed on the merged oil passage 270 and disposed between the first branch oil passage 182 and the first oil pump 110, and the check valve 210 is used for preventing the hydraulic oil input into the merged oil passage 270 through the first branch oil passage 182 from flowing toward the first oil pump 110. The breaking hammer 130 is provided with an overflow valve 220 in parallel, the breaking hammer 130 and the overflow valve 220 are both connected with the first multi-way valve 160, the breaking hammer 130 and the overflow valve 220 are both connected with the second oil return oil tank 250, and the overflow valve 220 is used for discharging redundant pressure in the parallel oil circuit, namely outputting redundant hydraulic oil to the second oil return oil tank 250.
In this embodiment, the pilot solenoid valve 150 and the selection solenoid valve 200 are integrated and combined to form the solenoid valve group 280, so as to be controlled by a worker. Specifically, the pilot solenoid valve 150 is a proportional pressure reducing valve capable of controlling the arm cylinder 140 to normally operate when the crushing-striking motion is not performed; the solenoid valve 200 is selected as a switching value solenoid valve, and whether confluence is achieved can be judged according to the real-time working state of the whole machine.
It should be noted that a first proportional pressure reducing valve 290 is disposed in the first oil pump 110, a second proportional pressure reducing valve 300 is disposed in the second oil pump 120, and both the first oil pump 110 and the second oil pump 120 are connected to the oil tank 260. The first proportional pressure reducing valve 290 and the second proportional pressure reducing valve 300 work together to regulate the ratio of each of the first oil pump 110 and the second oil pump 120 in the system power.
In the present embodiment, the controller 230 is connected to the pilot solenoid valve 150, the selection solenoid valve 200, the first proportional pressure reducing valve 290, and the second proportional pressure reducing valve 300, respectively. The controller 230 is used for collecting operation information of the whole machine, judging whether the compound operation is performed on the breaking hammer 130 and the boom cylinder 140, and when the compound operation is performed on the breaking hammer 130 and the boom cylinder 140, the controller 230 controls the pilot electromagnetic valve 150, the selection electromagnetic valve 200, the first proportional pressure reducing valve 290 and the second proportional pressure reducing valve 300, and at the moment, the pilot electromagnetic valve 150 reduces the boom pilot pressure to a proper position of a valve core, so that a part of hydraulic oil in the middle position can be supplied to the breaking hammer 130 in a confluence manner; the selection electromagnetic valve 200 controls the flow-merging valve 190 to be disconnected, so that hydraulic oil is prevented from flowing back to the first oil return tank 240; the first proportional pressure reducing valve 290 and the second proportional pressure reducing valve 300 control the first oil pump 110 and the second oil pump 120 according to the complete machine operation information collected in time, and adjust the power ratio thereof. Thus, in the combined work of the breaking hammer 130 and the boom cylinder 140, the breaking striking motion is appropriately prioritized with respect to the boom depressing motion, the efficiency of the breaking striking is prevented from being lowered, and the maximum boom depressing pressure is reduced, so that the boom depressing pressure and the breaking striking pressure can satisfy the normal work demand.
In this embodiment, the crushing and merging control system 100 can autonomously determine the combined operation state or the individual operation state for adaptive adjustment, and the client can autonomously select the crushing pressure flow rate to adapt to the crushing hammers 130 of different models, which is highly adaptable.
Referring to fig. 4, 5 and 6 (the hollow arrows in fig. 4, 5 and 6 indicate the flowing direction of the hydraulic oil), it should be noted that, during the operation of the crushing and merging control system 100, there are three operating states, namely a first operating state, a second operating state and a third operating state.
When crushing confluence control system 100 is in the first operation state, crushing hammer 130 performs a crushing striking motion alone. In this process, the first oil pump 110 pumps out the hydraulic oil in the oil tank 260, and enters the first multi-way valve 160 through the merge oil passage 270, and enters the breaking hammer 130 through the first multi-way valve 160 to supply the oil to the breaking hammer 130.
When the crushing merge control system 100 is in the second operating state, the boom cylinder 140 performs the boom-down action alone. In this process, the second oil pump 120 pumps out the hydraulic oil in the oil tank 260, wherein a portion of the hydraulic oil enters the boom cylinder 140 through the second multi-way valve 170 to supply the oil to the boom cylinder 140, and an excess portion of the hydraulic oil enters the first oil return oil tank 240 through the main oil passage 181 and the second branch oil passage 183, at which time the confluence valve 190 is opened.
When crushing merge control system 100 is in the third operating state, the crushing striking of crushing hammer 130 and the boom-down composite work of boom cylinder 140. In this process, the first oil pump 110 pumps out the hydraulic oil in the oil tank 260 to enter the merging oil passage 270; the second oil pump 120 pumps out the hydraulic oil in the oil tank 260, wherein a part of the hydraulic oil enters the boom cylinder 140 through the second multi-way valve 170 to supply the oil to the boom cylinder 140, and the other part of the hydraulic oil enters the confluence oil passage 270 through the main oil passage 181 and the first branch oil passage 182, at this time, the confluence valve 190 is closed, and the hydraulic oil enters the first multi-way valve 160 after being converged in the confluence oil passage 270 and enters the breaking hammer 130 through the first multi-way valve 160, thereby realizing confluence control of the breaking hammer 130.
In the crushing and merging control system 100 according to the embodiment of the present invention, the first oil pump 110 is connected to the crushing hammer 130 through the first multiplex valve 160, the merging oil passage 270 is provided between the first oil pump 110 and the first multiplex valve 160, the second oil pump 120 is connected to the second multiplex valve 170, the second multiplex valve 170 is respectively connected to the boom cylinder 140 and the merging oil passage 270, the pilot solenoid valve 150 is connected to the second multiplex valve 170, and the pilot solenoid valve 150 can adjust and control the valve position of the second multiplex valve 170 when the crushing hammer 130 and the boom cylinder 140 operate simultaneously, so that a part of the hydraulic oil pumped by the second oil pump 120 is input to the boom cylinder 140 and the other part is input to the merging oil passage 270. Compared with the prior art, the crushing and converging control system 100 provided by the invention adopts the second multi-way valve 170 respectively connected with the boom cylinder 140 and the converging oil passage 270 and the pilot electromagnetic valve 150 connected with the second multi-way valve 170, so that the redundant flow of the boom cylinder 140 can be supplemented to the crushing hammer 130 during the compound operation, the converging control of the crushing hammer 130 is realized, the condition that the working efficiency of the crushing hammer 130 is reduced is avoided, and the crushing and converging control system is reliable and practical. The excavator is stable and practical, and the crushing effect is good.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A crushing and merging control system is characterized by comprising a first oil pump (110), a second oil pump (120), a crushing hammer (130), a boom cylinder (140), a pilot electromagnetic valve (150), a first multi-way valve (160) and a second multi-way valve (170), wherein the first oil pump (110) is connected with the crushing hammer (130) through the first multi-way valve (160), a merging oil passage (270) is arranged between the first oil pump (110) and the first multi-way valve (160), the second oil pump (120) is connected with the second multi-way valve (170), the second multi-way valve (170) is respectively connected with the boom cylinder (140) and the merging oil passage (270), the pilot electromagnetic valve (150) is connected with the second multi-way valve (170), and the electromagnetic valve (150) can regulate and control the valve position of the second multi-way valve (170) when the crushing hammer (130) and the boom cylinder (140) work simultaneously, so that a part of the hydraulic oil pumped by the second oil pump (120) is input to the boom cylinder (140) and the other part is input to the merging oil passage (270).
2. The crushing confluence control system according to claim 1, wherein the second multi-way valve (170) is provided with a first oil port (171), a second oil port (172), and a third oil port (173), the first oil port (171) is connected with the second oil pump (120), the second oil port (172) is connected with the confluence oil passage (270), and the third oil port (173) is connected with the boom cylinder (140).
3. The crushing and merging control system according to claim 2, further comprising a control oil passage (180) and a merging valve (190), wherein the control oil passage (180) comprises a main oil passage (181), a first branch oil passage (182) and a second branch oil passage (183), the main oil passage (181) is connected with the first branch oil passage (182) and the second branch oil passage (183), respectively, the main oil passage (181) is connected with the second oil port (172), the first branch oil passage (182) is connected with the merging oil passage (270), the second branch oil passage (183) is connected with a first oil return tank (240), and the merging valve (190) is installed on the second branch oil passage (183).
4. The crushing confluence control system of claim 3 further comprising a selection solenoid valve (200), the selection solenoid valve (200) being connected to the confluence valve (190), the selection solenoid valve (200) being capable of controlling the confluence valve (190) to open or close.
5. The crushing confluence control system of claim 3, further comprising a check valve (210), wherein the check valve (210) is mounted on the confluence oil passage (270) and disposed between the first branch oil passage (182) and the first oil pump (110).
6. The crushing confluence control system according to claim 2, wherein the second multi-way valve (170) is further provided with a fourth oil port (174), the boom cylinder (140) is provided with a rodless chamber (141) and a rod chamber (142), the rod chamber (142) is connected with the third oil port (173), and the rodless chamber (141) is connected with the fourth oil port (174).
7. The crushing and merging control system according to claim 1, wherein an overflow valve (220) is arranged in parallel on the crushing hammer (130), the crushing hammer (130) and the overflow valve (220) are both connected with the first multi-way valve (160), and the crushing hammer (130) and the overflow valve (220) are both connected with a second return oil tank (250).
8. The crushing and merging control system according to claim 1, wherein a first proportional pressure reducing valve (290) is provided in said first oil pump (110), a second proportional pressure reducing valve (300) is provided in said second oil pump (120), and both said first oil pump (110) and said second oil pump (120) are connected to an oil tank (260).
9. The crushing and merging control system according to claim 8, further comprising a controller (230), said controller (230) being connected to said pilot solenoid valve (150), said first proportional pressure reducing valve (290) and said second proportional pressure reducing valve (300), respectively.
10. An excavator comprising the crushing confluence control system as claimed in any one of claims 1 to 9.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115305985A (en) * | 2022-07-22 | 2022-11-08 | 三一重机有限公司 | Breaking hammer operation control method and system and operation machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892681A (en) * | 2009-05-22 | 2010-11-24 | 沃尔沃建造设备控股（瑞典）有限公司 | Hydraulic system with improved complex operation |
| KR20100130034A (en) * | 2009-06-02 | 2010-12-10 | 볼보 컨스트럭션 이큅먼트 에이비 | Excavator with hammer device |
| CN104314132A (en) * | 2014-09-29 | 2015-01-28 | 中外合资沃得重工（中国）有限公司 | Motor flow hydraulic control circuit and control method for negative flow system of excavator |
| CN204898750U (en) * | 2015-06-16 | 2015-12-23 | 徐工集团工程机械股份有限公司 | Dipper excavates hydraulic system and hydraulic shovel |
| CN105317067A (en) * | 2015-11-30 | 2016-02-10 | 周驰军 | Double-pump valve outside flow-converging system suitable for breaking hammer of excavator |
-
2019
- 2019-11-21 CN CN201911145431.6A patent/CN110820829A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892681A (en) * | 2009-05-22 | 2010-11-24 | 沃尔沃建造设备控股（瑞典）有限公司 | Hydraulic system with improved complex operation |
| KR20100130034A (en) * | 2009-06-02 | 2010-12-10 | 볼보 컨스트럭션 이큅먼트 에이비 | Excavator with hammer device |
| CN104314132A (en) * | 2014-09-29 | 2015-01-28 | 中外合资沃得重工（中国）有限公司 | Motor flow hydraulic control circuit and control method for negative flow system of excavator |
| CN204898750U (en) * | 2015-06-16 | 2015-12-23 | 徐工集团工程机械股份有限公司 | Dipper excavates hydraulic system and hydraulic shovel |
| CN105317067A (en) * | 2015-11-30 | 2016-02-10 | 周驰军 | Double-pump valve outside flow-converging system suitable for breaking hammer of excavator |
Non-Patent Citations (1)
| Title |
|---|
| 张铁: "《液压挖掘机结构、原理及使用》", 31 December 2002 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115305985A (en) * | 2022-07-22 | 2022-11-08 | 三一重机有限公司 | Breaking hammer operation control method and system and operation machine |
| CN115305985B (en) * | 2022-07-22 | 2023-10-31 | 三一重机有限公司 | Breaking hammer operation control method and system and operation machine |
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Application publication date: 20200221 |