CN209704953U - A kind of hydraulic system and the engineering machinery using it - Google Patents
A kind of hydraulic system and the engineering machinery using it Download PDFInfo
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- CN209704953U CN209704953U CN201920450867.5U CN201920450867U CN209704953U CN 209704953 U CN209704953 U CN 209704953U CN 201920450867 U CN201920450867 U CN 201920450867U CN 209704953 U CN209704953 U CN 209704953U
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- fuel tank
- hydraulic system
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Abstract
The utility model discloses a kind of hydraulic system and using its engineering machinery, hydraulic system includes the fuel tank for holding hydraulic oil, the first hydraulic pump for the hydraulic oil in fuel tank to be sucked out, and it is several for driving the hydraulic cylinder of manipulator motion, it is connect correspondingly with hydraulic cylinder and for changing several reversal valves of its direction of motion, hydraulic system further includes the second hydraulic pump for the hydraulic oil in fuel tank to be sucked out, hydraulic actuator for driving operation part to move, for changing the executive component reversal valve of the hydraulic actuator direction of motion, executive component reversal valve is connect with fuel tank and the second hydraulic pump, hydraulic actuator is connect with executive component reversal valve, engineering machinery then applies above-mentioned hydraulic system.The hydraulic system tool hydraulic pump different there are two flow, flow is lesser for driving mechanical arm, flow biggish for driving operation part, therefore the control for being not only able to satisfy mechanical arm needs but also is able to satisfy the work requirements of operation part.
Description
Technical field
The utility model relates to a kind of hydraulic system and using its engineering machinery.
Background technique
Excavator is a kind of common engineering machinery, and principle is generally by the bucket for driving mechanical armband to move its front end
It cuts the earth.If the bucket of excavator is changed to other operation parts, excavator can be realized other function, for example will dig
Bucket is changed to drilling machine, then excavator can be realized the native function of brill, bucket is changed to wood-split machine for another example, then excavator can be real
Existing firewood function.But driving power needed for these operation parts is larger, smaller for power needed for driving mechanical arm work,
The oil pump flow of original hydraulic system is only that 3mL/ turns, it is difficult to drive operation part.If the oil pump in original hydraulic system is changed to
The biggish oil pump of flow, and drive mechanical arm and operation part to move with the oil pump, then the movement speed of mechanical arm will become
Fastly, operation difficulty improves.
Summary of the invention
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of new hydraulic system.
In order to achieve the above objectives, the technical solution adopted in the utility model is: a kind of hydraulic system of engineering machinery, including
For holding the fuel tank, the first hydraulic pump for the hydraulic oil in the fuel tank to be sucked out and several use of hydraulic oil
In driving manipulator motion hydraulic cylinder, connect correspondingly with the hydraulic cylinder and for changing the several of its direction of motion
Reversal valve, all reversal valves are all connect with the fuel tank and the first hydraulic pump, and the hydraulic system further includes for inciting somebody to action
The second hydraulic pump that the hydraulic oil in the fuel tank is sucked out, is used the hydraulic actuator for driving operation part movement
In the executive component reversal valve for changing the hydraulic actuator direction of motion, the executive component reversal valve and the fuel tank and
The second hydraulic pump connection, the hydraulic actuator are connect with the executive component reversal valve.
Preferably, the hydraulic system includes duplex hydraulic pump, and the duplex hydraulic pump has being capable of independent output hydraulic pressure
Oil two oil outlets, two oil outlets respectively constitute first hydraulic pump oil outlet and the second hydraulic pump it is fuel-displaced
Mouthful.
Preferably, the fuel tank is connected with oil return line, flows out in the reversal valve and executive component reversal valve hydraulic
Oil all flows into the fuel tank through the oil return line.
It is further preferred that the oil return line is provided with the filter for filtering impurity in hydraulic oil.
Preferably, the oil outlet of the oil outlet of first hydraulic pump and second hydraulic pump is both provided with and the oil
The overflow passage of case connection, is provided with overflow valve on the overflow passage, when the pressure in the overflow passage is more than setting value
When, the overflow valve is opened.
Preferably, the hydraulic actuator is the firewood hydraulic cylinder for driving wood-split machine to work.
Preferably, the hydraulic actuator is the hydraulic motor for driving drilling machine to work.
The another object of the utility model is to provide a kind of engineering machinery for applying above-mentioned hydraulic system,
In order to achieve the above objectives, the technical solution adopted in the utility model is: a kind of engineering machinery, including body and machinery
Arm, one end of the mechanical arm is connected on the body, the other end is detachably connected with operation part, the operation part
For for shoveling bucket or for bore soil drilling machine or for the wood-split machine of firewood, the operation part all include for institute
It states the interconnecting piece of mechanical arm connection and the homework department for cutting the earth or boring soil or firewood, the engineering machinery is applied just like preceding institute
The hydraulic system stated.
Due to the application of the above technical scheme, the utility model has the advantage that the hydraulic pressure system compared with prior art
There are two hydraulic pumps for system tool, and two hydraulic pump flow differences, the lesser hydraulic pump of flow is for driving mechanical arm, flow biggish
Hydraulic pump is for driving operation part, therefore the oil circuit of two different pressures of hydraulic system physical presence, all the way for operating
Mechanical arm simultaneously can be realized digging operation, and for another way for driving wood-split machine, drilling machine etc., which can either meet machinery
The control needs of arm, the work requirements that can satisfy operation part again, the engineering machinery for applying the hydraulic system can be realized
The conversion of different work function.
Detailed description of the invention
Attached drawing 1 is the working principle diagram of hydraulic system；
Attached drawing 2 is the axonometric schematic diagram for being equipped with the engineering machinery of bucket；
Attached drawing 3 is the axonometric schematic diagram of bucket；
Attached drawing 4 is the axonometric schematic diagram for being equipped with the engineering machinery of drilling machine；
Attached drawing 5 is the axonometric schematic diagram of drilling machine；
Attached drawing 6 is the axonometric schematic diagram for being equipped with the engineering machinery of wood-split machine；
Attached drawing 7 is the axonometric schematic diagram of wood-split machine；
Attached drawing 8 is axonometric schematic diagram when engineering machinery is equipped with crawler belt；
Wherein: 1, fuel tank；2, the first hydraulic pump；3, the second hydraulic pump；4, hydraulic cylinder；5, reversal valve；6, hydraulic to execute member
Part；7, executive component reversal valve；8, filter；9, overflow valve；10, duplex hydraulic pump；20, oil return line；30, overflow passage；
40, motor；
101, body；1011, interconnecting piece is drawn；102, mechanical arm；1021, first connecting rod；1022, second connecting rod；1023,
Telescoping cylinder；103, wheel assembly；104, support foot rest；1041, plate；1042, support plate；105, bucket；1051, bottom sheet；
1052, struggle against side plate；1053, bucket tooth；106, wood-split machine；1061, rack；1062, chopper；1063, block；1064, blade；107,
Quick bolt；108, drilling machine；1081, drill bit；1082, hydraulic motor；1083, protection board；1084, borer frame；10841, hold
Receive chamber；1010, interconnecting piece；1020, homework department.
Specific embodiment
The technical solution of the utility model is further elaborated with reference to the accompanying drawing.
Referring to shown in Fig. 1, Fig. 2, Fig. 4, Fig. 6, the hydraulic system of engineering machinery include for hold the fuel tank 1 of hydraulic oil,
The first hydraulic pump 2 and several hydraulic cylinders for being used to that mechanical arm 102 to be driven to move for the hydraulic oil in fuel tank 1 to be sucked out
4, connect correspondingly with hydraulic cylinder 4 and for changing several reversal valves 5 of its direction of motion, all reversal valves 5 all with
Fuel tank 1 and the connection of the first hydraulic pump 2.Specifically, mechanical arm 2 has multiple rotary joints, and each rotary joint is hydraulic by one
Cylinder 4 drives rotation, the hydraulic cylinder 4 be telescoping cylinder 1023, by manipulate reversal valve 5 can change rotary joint rotation angle,
And then control the posture of mechanical arm 102.
Hydraulic system further include for by fuel tank 1 hydraulic oil be sucked out the second hydraulic pump 3, be used to drive operation part
The hydraulic actuator 6 of movement, for changing the executive component reversal valve 7 of 6 direction of motion of hydraulic actuator, executive component changes
It is connect to valve 7 with fuel tank 1 and the second hydraulic pump 3, hydraulic actuator 6 is connect with executive component reversal valve 7.Specifically, hydraulic
Executive component 6 can be the firewood hydraulic cylinder for driving wood-split machine 106 to work, the hydraulic horse for driving drilling machine 108 to work
Up to 1082 etc., user can according to need replacement hydraulic actuator 6, and hydraulic actuator 6 is accessed in hydraulic system.
The positive and negative rotation conversion of hydraulic actuator 6 may be implemented by controlling executive component reversal valve 7.
Power needed for the first hydraulic pump 2 for controlling the movement of mechanical arm 102 is smaller, for controlling the second of operation part
Power needed for hydraulic pump 3 is larger, so that hydraulic pump and action component power match.When engineering machinery is only used for excavating
When, hydraulic actuator 6 does not access in hydraulic system.Preferably, 2 output flow of the first hydraulic pump turns for 1 ~ 5mL/, the
Two hydraulic pumps, 3 output flow turns for 5 ~ 12mL/.In the present embodiment, 2 output flow of the first hydraulic pump turns for 3mL/, the second liquid
3 output flow of press pump turns for 8mL/.
It is preferably carried out mode as one kind, the hydraulic pump that hydraulic system uses is duplex hydraulic pump 10, and the duplex is hydraulic
Pump 10 has two oil outlets for capableing of independent output hydraulic pressure oil, the two oil outlets respectively constitute the fuel-displaced of the first hydraulic pump 2
The oil outlet of mouth and the second hydraulic pump 3 can according to need and adjust the circulation that corresponding oil outlet participates in hydraulic system.The duplex
Hydraulic pump 10 is driven by a motor 40.
Fuel tank 1 is connected with oil return line 20, and the hydraulic oil flowed out in reversal valve 5 and executive component reversal valve 7 is all through oil return
Pipeline 20 flows into fuel tank 1, so that oil circuit is more clean and tidy.Oil return line 20 is provided with the filtering for filtering impurity in hydraulic oil
Device 8, prevents impurity from entering in fuel tank, guarantees the degree of purity of hydraulic oil.
The oil outlet of the oil outlet of first hydraulic pump 2 and the second hydraulic pump 3 is both provided with the overflow passage connecting with fuel tank
30, overflow valve 9 is both provided on each overflow passage 30, and when the pressure in overflow passage 30 is more than setting value, overflow valve 9 is opened
It opens.Once therefore mechanical arm or operation part overload, hydraulic oil will be recovered in fuel tank 1 from skimmer circuit 30, be avoided
Circuit is damaged.
Referring to fig. 2 to shown in Fig. 7, engineering machinery includes body 101 and mechanical arm 102, and 101 lower part of body is provided with wheel group
Part 103, one end of mechanical arm 102 is connected on body 101, the other end is detachably connected with operation part, the operation part
For the bucket 105 for shoveling or the drilling machine 108 for the wood-split machine 106 of firewood or for boring soil, bucket 105 and furrowing blade
106 all include the interconnecting piece 1010 and homework department 1020 for connecting with mechanical arm 102.User can be according to practical need
Seek the corresponding operation part of replacement.
Shown in referring to figs. 2 and 3, specifically, the homework department 1020 of bucket 105 include arch bottom sheet 1051 and
It is located at two bucket side plates 1052 of 1051 width direction two sides of bottom sheet, the sky that bottom sheet 1051 and bucket side plate 1052 surround
Between can hold the earthwork.The one end of 1051 length direction of bottom sheet is provided with several bucket tooths 1053, due to the width of bucket 105
It is larger, it is not easy in insertion soil, bucket 105 is easier to cut the earth after being provided with bucket tooth 1053.
Referring to fig. 4 and shown in Fig. 5, the homework department 1020 of wood-split machine 106 includes rack 1061 and is slidably arranged relatively
Chopper 1062 in rack 1061, rack 1061 are provided with block 1063, chopper in the side of 1062 glide direction of chopper
1062 are provided with blade 1064 towards the side of block 1063.When carrying out firewood operation, the position of chopper 1062 is first adjusted, so that
For timber between chopper 1062 and block 1063, subsequent hydraulic actuator 6 drives chopper 1062 towards the side of block 1063
To movement, timber is split into fritter by blade 1064.Since wood-split machine 106 is arranged on mechanical arm 102, flexibility ratio is higher, because
This is capable of handling timber of various shapes.
The two sides of 1062 glide direction of chopper are each provided with a block 1063, and chopper 1062 is the two of its glide direction
Side is both provided with blade 1064, therefore chopper 1062 can carry out firewood towards both direction, improve the efficiency of firewood.Chopper
1062 every sides can be provided with multiple blades 1064, and timber can be cut to multiple by such firewood.In the present embodiment,
There are two the unilateral settings of blade 1064 of chopper 1062, and two blades 1064 are mutually perpendicular in cross, therefore wood-split machine 106 1
Secondary can split timber is 104 pieces.
Referring to shown in Fig. 6 and Fig. 7, the homework department 1020 of drilling machine 108 includes including drill bit 1081, for driving drill bit 1081
The hydraulic motor 1082 of rotation, drill bit 1081 are located at the lower section of hydraulic motor 1082.When using drilling machine 108, by hydraulic motor
1082 access oil circuits.
The homework department 1020 of drilling machine 108 is additionally provided with horizontal protection board 1083, pierces soil because of drill bit 1081 for preventing
It is excessive in ground, it causes driving device 1082 to hit ground and causes to damage, therefore the height that protection board 1083 is arranged should be not higher than drive
The bottom end of dynamic device 1082, when protection board 1083 contacts ground, protection board 1083 can prevent drilling machine 108 from continuing to pierce ground
Face prevents driving device 1082 to be damaged.
The homework department 1020 of drilling machine 108 further includes the borer frame 1084 with accommodating chamber 10841, borer frame 1084 with
Interconnecting piece 1010 is fixedly connected, and driving device 1082 is arranged in accommodating chamber 10841, and accommodating chamber 10841 is to driving device 1082
It plays a protective role, correspondingly, the lower section of accommodating chamber 10841 is arranged in protection board 1083.
It can be seen from the above, the structure of several operation parts, the structure of especially interconnecting piece 1020 is more similar, therefore two kinds
The replacement of operation part is more convenient.
Operation part is provided with driving operation part rotation by being rotationally connected on mechanical arm 102 on mechanical arm 102
Driving mechanism.Driving mechanism includes first connecting rod 1021, second connecting rod 1022 and can stretch in the axial direction flexible
Cylinder 1023, the one end of first connecting rod 1021 is rotationally connected on mechanical arm 102, the other end is rotationally connected to the second company
On bar 1022, the one end of telescoping cylinder 1023 is rotationally connected on first connecting rod 1021 and second connecting rod 1022, the other end
It is rotationally connected on mechanical arm 102, end of the second connecting rod 1022 far from first connecting rod 1021, mechanical arm 102 are far from body
101 end is all rotationally connected on the interconnecting piece 1010 of operation part.First connecting rod 1021, second connecting rod 1022, connection
Portion 1020, mechanical arm 102 constitute four-bar mechanism, and telescoping cylinder 1023 drives the parallel motion and then drives homework department
Part rotation is to carry out shoveling or ditching operation.
The setting of interconnecting piece 1010 passes through one of connection through-hole and homework department there are two through-hole, second connecting rod 1022 is connected
The rotation connection of part 1020, mechanical arm 102 are rotatablely connected by another connection through-hole and operation part.Through-hole is connected to pass through quickly
Bolt 107 is connect with mechanical arm 102 and second connecting rod 1022, convenient for the replacement of operation part.
The left and right sides of body 101 is each provided at least one dismountable support foot rest 104, and support foot rest 104 is from upper
Outside inclination downwardly against body 101 extends and is supported in ground.After removing support foot rest 104, which can be with
It is moved by wheel assembly 103.In the present embodiment, wheel assembly 103 is follower, that is, engineering machinery does not have driving wheel group
The power source of part 103, body 101 are provided with traction interconnecting piece 1011 far from the side of mechanical arm 102, and engineering machinery can pass through
The traction interconnecting piece 1011 is connect with tractor.When needing remote mobile engineering machinery, support foot rest 104 is removed, is packed up
Mechanical arm 102 is drawn using tractor at the rear portion of engineering machinery.Therefore, the struction machine structures are simple and reliable, cost
It is lower, it is moved convenient for user.
When body 101 is equipped with support foot rest 104, support foot rest 104 can be inserted partially into ground, prevent engineering machinery
Body 101 moves at work, at this time if desired short-distance movement engineering machinery, then can use mechanical arm 102 for machine
Body 101 jacks up, so that support foot rest 104 is extracted from soil, mechanical arm 102, which moves forward and backward, drives body 101 mobile.
The lower end of support foot rest 104 is provided with the plate 1041 extended along the vertical direction, and plate 1041 can be deeper into
Ground is inserted into soil, promotes the braking effect of support foot rest 104.The lower end of support foot rest 104 is additionally provided with parallel to the ground
Support plate 1042, the lower end of plate 1041 is lower than support plate 1042.Support plate 1042 is supported in ground, in order to avoid support foot rest
104 fall into ground too far, cause engineering machinery that can not move.
Shown in Figure 8, in certain embodiments, the wheel assembly 103 of 101 lower part of body also could alternatively be crawler belt 107,
It bores native engineering truck to be moved by the driving of crawler belt 107, be dragged without trailer, flexibility is more preferable, can voluntarily drive to difference
It works under environment.Specifically, crawler belt 107 is driven by the second hydraulic pump 3 and is moved.
The above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement accordingly, do not limit the protection scope of the present invention.
All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover the protection scope of the utility model it
It is interior.
Claims (8)
1. a kind of hydraulic system, it is characterised in that: including for holding hydraulic oil fuel tank, for will be described in the fuel tank
The first hydraulic pump and several hydraulic cylinders for driving manipulator motion and the hydraulic cylinder one that hydraulic oil is sucked out are a pair of
Connect with answering and for changing several reversal valves of its direction of motion, all reversal valves all with the fuel tank and the first liquid
Press pump connection,
The hydraulic system further include for by the fuel tank the hydraulic oil be sucked out the second hydraulic pump, be used to drive work
Industry component movement hydraulic actuator, for changing the executive component reversal valve of the hydraulic actuator direction of motion, institute
It states executive component reversal valve to connect with the fuel tank and second hydraulic pump, the hydraulic actuator and the executive component
Reversal valve connection.
2. hydraulic system according to claim 1, it is characterised in that: the hydraulic system includes duplex hydraulic pump, described
Duplex hydraulic pump has two oil outlets for capableing of independent output hydraulic pressure oil, and two oil outlets respectively constitute first liquid
The oil outlet of the oil outlet of press pump and the second hydraulic pump.
3. hydraulic system according to claim 1, it is characterised in that: the fuel tank is connected with oil return line, the commutation
The hydraulic oil flowed out in valve and executive component reversal valve all flows into the fuel tank through the oil return line.
4. hydraulic system according to claim 3, it is characterised in that: the oil return line is provided with for filtering hydraulic oil
The filter of middle impurity.
5. hydraulic system according to claim 1, it is characterised in that: the oil outlet of first hydraulic pump and described second
The oil outlet of hydraulic pump is both provided with the overflow passage connecting with the fuel tank, is provided with overflow valve on the overflow passage, when
When pressure in the overflow passage is more than setting value, the overflow valve is opened.
6. hydraulic system according to claim 1, it is characterised in that: the hydraulic actuator is for driving wood-split machine
The firewood hydraulic cylinder of work.
7. hydraulic system according to claim 1, it is characterised in that: the hydraulic actuator is for driving drilling machine work
The hydraulic motor of work.
8. a kind of engineering machinery, including body and mechanical arm, it is characterised in that: one end of the mechanical arm is connected to the body
The upper, other end is detachably connected with operation part, and the operation part is the drilling machine for the bucket of shoveling or for boring soil
Or the wood-split machine for firewood, the operation part all include interconnecting piece for connecting with the mechanical arm and for digging
Soil or the homework department for boring soil or firewood, the engineering machinery application have described in any item hydraulic systems as described in any one of claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920450867.5U CN209704953U (en) | 2019-04-04 | 2019-04-04 | A kind of hydraulic system and the engineering machinery using it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920450867.5U CN209704953U (en) | 2019-04-04 | 2019-04-04 | A kind of hydraulic system and the engineering machinery using it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209704953U true CN209704953U (en) | 2019-11-29 |
Family
ID=68646815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920450867.5U Active CN209704953U (en) | 2019-04-04 | 2019-04-04 | A kind of hydraulic system and the engineering machinery using it |
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| Country | Link |
|---|---|
| CN (1) | CN209704953U (en) |
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2019
- 2019-04-04 CN CN201920450867.5U patent/CN209704953U/en active Active
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