CN208950996U - A kind of hydrostatic walking loop brake release system of road roller - Google Patents
A kind of hydrostatic walking loop brake release system of road roller Download PDFInfo
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- CN208950996U CN208950996U CN201821636449.7U CN201821636449U CN208950996U CN 208950996 U CN208950996 U CN 208950996U CN 201821636449 U CN201821636449 U CN 201821636449U CN 208950996 U CN208950996 U CN 208950996U
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Abstract
The utility model discloses a kind of hydrostatic walking loop brake release system of road roller, system includes fuel tank, filter, hydraulic pump, electric proportional hydraulic motor, controller, manipulation device, valve group, hydraulic power unit, oil cylinder group and brake；Hydraulic pump is through filter from fuel tank oil suction, hydraulic pump hydraulic fluid port A, B are connected with electric proportional hydraulic motor hydraulic fluid port D, C respectively, constitute hydrostatic walking closed circuit, the E mouth of valve group is connect with the G of hydraulic pump mouth, the F mouth of valve group is connect with fuel tank, the H mouth of valve group is connect with hydraulic power unit, and the L mouth of valve group is connect with brake, and the K mouth of valve group is connect with oil cylinder group；Hydraulic power unit includes valve, motor, hydraulic pump；The motor is connect with hydraulic pump, for driving hydraulic pump works；The valve group, valve, the mechanical, electrical proportional hydraulic motor of electricity are connect with controller, and controller is connect with manipulation device, is operated by manipulation device.
Description
Technical field
The utility model relates to a kind of hydrostatic walking loop brake release systems of road roller, belong to compacting machinary technology neck
Domain.
Background technique
Existing fluid power system, hydraulic pump through filter from fuel tank draw oil liquid, hydraulic pump and hydraulic motor structure
At hydrostatic closed circuit, hydraulic pump provides pressure oil to brake through brake valve and hand-operated valve by internal slippage pump, manually
It pumps both ends and connects check valve, and is in parallel with brake valve, hand-operated valve, brake is mounted on the output device of hydraulic motor, braking
Valve must be electric after starting engine, and right position work can thus release braking.There is event when encountering engine or hydraulic circuit etc.
Barrier when needing trailer, need to manipulate hand-operated valve through professional, cut off the oil sources circuit that hydraulic pump provides, and will be inside hydraulic pump
Shut-off valve open, manipulate handlance, can release braking, such operating procedure bothers, need professional to hydraulic pump into
Row adjustment, just can be with trailer.
Using the road roller of hydrostatic technology, trailer is extremely troublesome, and professional technician is needed to instruct, by cutting on hydraulic pump
Only valve is opened, and connection rubber tube is opened brake with handlance, can carry out trailer.It is not only easy to seep hydraulic oil in this way
Leakage, and the state of hydraulic pump is adjusted, it also needs to restore again, if without configuring corresponding handlance on road roller,
It also needs to buy again.
Utility model content
Purpose: in order to overcome the deficiencies in the prior art, the utility model provides a kind of hydrostatic walking of road roller
Circuit brake release system.
Technical solution: in order to solve the above technical problems, the technical solution adopted by the utility model is:
A kind of hydrostatic walking loop brake release system of road roller, including fuel tank, filter, hydraulic pump, electric ratio liquid
Pressure motor, controller, manipulation device, valve group, hydraulic power unit, oil cylinder group and brake；
Through filter from fuel tank oil suction, hydraulic pump hydraulic fluid port A, B's hydraulic pump are connected with electric proportional hydraulic motor hydraulic fluid port D, C respectively
It connects, constitutes hydrostatic walking closed circuit, the E mouth of valve group is connect with the G of hydraulic pump mouth, and the F mouth of valve group is connect with fuel tank, valve group
H mouth connect with hydraulic power unit, the L mouth of valve group is connect with brake, and the K mouth of valve group is connect with oil cylinder group；
The hydraulic power unit includes valve, motor, hydraulic pump；The motor is connect with hydraulic pump, for driving hydraulic pump work
Make；
The valve group, valve, the mechanical, electrical proportional hydraulic motor of electricity are connect with controller, and controller is connect with manipulation device, is led to
Manipulation device is crossed to be operated.
As a specific implementation preferred embodiment, the valve group 7 is by two-position three-way valve 71,2/2-way valve 72, two-bit triplet
Valve 73 forms.
As another specific implementation preferred embodiment, the valve group is by two position four-way valves 74 and a two-position three-way valve 73
Composition.
Preferably, the hydrostatic walking loop brake release system of the road roller, it is characterised in that: the liquid
Press pump station further includes manual pump, for releasing braking manually.
Further, the hydrostatic walking loop brake release system of the road roller, it is characterised in that: the electricity ratio
The discharge capacity default of hydraulic motor is zero delivery.
Further, the hydrostatic walking loop brake release system of the road roller, it is characterised in that: the manipulation dress
It sets and is provided with gear button, walking handle, parking button, danger button, rising button, declines button, trailer button.
The control method of the hydrostatic walking loop brake release system of road roller described in the utility model is as follows:
When trailer: pressing the trailer button on manipulation device 6, controller 5 makes the two-position three-way valve 71 and two in valve group 7
Position two-way valve 72 it is electric, two-position three-way valve 73 must not electricity, electric proportional hydraulic motor 4 default is in zero-displacement condition, controls simultaneously
Device 5 makes the motor 83 in hydraulic power unit 8 work, and motor 83 drives hydraulic pump 84 to work, the high pressure oil warp that hydraulic power unit 8 comes out
The right bit stream of two-position three-way valve 71 in valve group 7 releases braking to brake 10, can trailer；
Or, when trailer: pressing the trailer button on manipulation device 6, controller 5 makes two position four-way valves 74 in valve group 7
It is electric, two-position three-way valve 73 must not electricity, electric proportional hydraulic motor 4 default is in zero-displacement condition, at the same controller 5 make it is hydraulic
Motor 83 in pumping plant 8 works, and motor 83 drives hydraulic pump 84 to work, and the high pressure oil that hydraulic power unit 8 comes out is through two in valve group 7
The right bit stream of position four-way valve 74 releases braking to brake 10, can trailer.Using the utility model, trailer button is pressed
Trailer operation is carried out to road roller.
When normal work: after engine start, controller 5 makes two-position three-way valve 71 and 2/2-way valve 72 in valve group 7
Must not be electric, two-position three-way valve 73 must be electric, and 73 working position of two-position three-way valve is right position, and G mouth of the oil liquid through hydraulic pump 3 is through in valve group 7
The right position of two-position three-way valve 73 and 72 left position of 2/2-way valve flow to brake 10, release braking, pass through 6 middle gear of manipulation device
Button, via controller 5 make electric proportional hydraulic motor 4 reach setting discharge capacity, pass through the walking handle in manipulation device 6, hydrostatic
Press running gear work, road roller normal walking；
When road roller parking braking, the parking button on manipulation device 6 is pressed, controller 5 makes the two-bit triplet in valve group 7
Valve 71,73 and 2/2-way valve 72 must not be electric, and brake 10 is connected to through valve group 7 with fuel tank 1,10 locking electricity proportional hydraulic of brake
The output device of motor 4；
When road roller emergency braking, the danger button on manipulation device 6 is pressed, controller 5 makes the two-bit triplet in valve group 7
Valve 71,73 and 2/2-way valve 72 must not be electric, and brake 10 is connected to through valve group 7 with fuel tank 1,10 locking electricity proportional hydraulic of brake
The output device of motor 4 realizes the emergency braking in walking；
When hood needs to rise, the rising button on manipulation device 6 is pressed, controller 5 makes the motor in hydraulic power unit 8
83 work, motor 83 drives hydraulic pump 84, through 71 left position of two-position three-way valve in valve group 7 to 9 fuel feeding of oil cylinder group, by hood liter
It rises；When hood declines, the declines button on manipulation device 6 is pressed, controller 5 makes the valve 82 in hydraulic power unit 8 work, oil cylinder
Group 9 through in valve group 7 71 left position of two-position three-way valve and valve 82 connect fuel tank in hydraulic power unit and slowly decline by hood gravity；
Or, when working normally: after engine start, controller 5 keeps two position four-way valves 74 in valve group 7 electric, two
Triple valve 73 must be electric, and 73 working position of two-position three-way valve is right position, and G mouth of the oil liquid through hydraulic pump 3 is through the two-position three-way valve in valve group 7
73 right positions and two position four-way valves, 74 left position flow to brake 10, braking are released, by 6 middle gear button of manipulation device, through controlling
Device 5 makes electric proportional hydraulic motor 4 reach setting discharge capacity, by the walking handle in manipulation device 6, hydrostatic running gear work
Make, road roller normal walking；
When road roller parking braking, the parking button on manipulation device 6 is pressed, controller 5 makes the two-bit triplet in valve group 7
Valve 73 and two position four-way valves 74 must not be electric, and brake 10 is connected to through valve group 7 with fuel tank 1,10 locking electricity proportional hydraulic horse of brake
Up to 4 output device；
When road roller emergency braking, the danger button on manipulation device 6 is pressed, controller 5 makes the two-bit triplet in valve group 7
Valve 73 and two position four-way valves 74 must not be electric, and brake 10 is connected to through valve group 7 with fuel tank 1,10 locking electricity proportional hydraulic horse of brake
Up to 4 output device, the emergency braking in walking is realized；
When hood needs to rise, the rising button on manipulation device 6 is pressed, controller 5 makes the motor in hydraulic power unit 8
83 work, motor 83 drives hydraulic pump 84, through two position four-way valves, 74 left position in valve group 7 to 9 fuel feeding of oil cylinder group, by hood liter
It rises；When hood declines, the declines button on manipulation device 6 is pressed, controller 5 makes the valve 82 in hydraulic power unit 8 work, oil cylinder
Group 9 through in valve group 7 two position four-way valves, 74 left position and valve 82 connect fuel tank in hydraulic power unit and slowly decline by hood gravity.
The utility model has the advantages that the hydrostatic walking loop brake release system of road roller provided by the utility model and control method,
The hydraulic motor of fluid power system uses the hydraulic motor of electric proportional control, and braking oil sources is provided by electric hydraulic station, only
Trailer button need to be pressed, since the discharge capacity default of hydraulic motor is zero delivery, while making electric hydraulic station and braking valve group work
Make, releases braking, it can trailer.When trailer, can a key manipulation carry out releasing braking, it is simple and convenient, be not required to professional progress
Manipulation, and do not have to manually adjust the shut-off valve in hydraulic pump, shut-off valve also needs professional to adjust.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment 1；
Fig. 2 is the structural schematic diagram of valve group in embodiment 2.
In figure: fuel tank 1, filter 2, hydraulic pump 3, electric proportional hydraulic motor 4, controller 5, manipulation device 6, valve group 7, liquid
Press pump station 8, manual pump 81, valve 82, motor 83, hydraulic pump 84, oil cylinder group 9, brake 10.
Specific embodiment
The utility model is further described combined with specific embodiments below.
Embodiment 1
As shown in Figure 1, a kind of hydrostatic walking loop brake release system of road roller, including it is fuel tank 1, filter 2, hydraulic
Pump 3, electric proportional hydraulic motor 4, controller 5, manipulation device 6, valve group 7, hydraulic power unit 8, oil cylinder group 9 and brake 10.
Hydraulic pump 3 through filter 2 from 1 oil suction of fuel tank, hydraulic pump 3 hydraulic fluid port A, B respectively with electric 4 hydraulic fluid port D of proportional hydraulic motor,
C is connected, and constitutes hydrostatic walking closed circuit, and the E mouth of valve group 7 is connect with the G of hydraulic pump 3 mouth, the F mouth and fuel tank 1 of valve group 7
Connection, the H mouth of valve group 7 are connect with hydraulic power unit 8, and the L mouth of valve group 7 is connect with brake 10, and the K mouth and oil cylinder group 9 of valve group 7 connect
It connects.
The hydraulic power unit 8 includes manual pump 81, valve 82, motor 83, hydraulic pump 84；
7 motor 83 of valve group, valve 82, electric proportional hydraulic motor 4 are connect with controller 5, controller 5 and manipulation device
6 connection, operated by manipulation device 6, be provided on the manipulation device 6 gear button, walking handle, parking button,
Danger button, rising button, declines button, trailer button.
In the present embodiment, the valve group 7 includes two-position three-way valve 71,2/2-way valve 72, two-position three-way valve 73；
Specific embodiment:
When normal work: after engine start, controller 5 makes two-position three-way valve 71 and 2/2-way valve 72 in valve group 7
Must not be electric, two-position three-way valve 73 must be electric, and 73 working position of two-position three-way valve is right position, and G mouth of the oil liquid through hydraulic pump 3 is through in valve group 7
The right position of two-position three-way valve 73 and 72 left position of 2/2-way valve flow to brake 10, release braking, pass through 6 middle gear of manipulation device
Button, via controller 5 make electric proportional hydraulic motor 4 reach setting discharge capacity, pass through the walking handle in manipulation device 6, hydrostatic
Press running gear work, road roller normal walking.When road roller parking braking, the parking button on manipulation device 6 is pressed, is controlled
Device 5 makes two-position three-way valve 71,73 and 2/2-way valve 72 in valve group 7 must not be electric, and brake 10 is connected to through valve group 7 with fuel tank 1,
The output device of 10 locking electricity proportional hydraulic motor 4 of brake；When road roller emergency braking, press urgent on manipulation device 6
Button, controller 5 make two-position three-way valve 71,73 in valve group 7 and 2/2-way valve 72 must not electricity, brake 10 through valve group 7 with
Fuel tank 1 is connected to, the output device of 10 locking electricity proportional hydraulic motor 4 of brake, realizes the emergency braking in walking；When hood needs
When rising, the rising button on manipulation device 6 is pressed, controller 5 makes the motor 83 in hydraulic power unit 8 work, 83 band of motor
Hydrodynamic press pump 84 rises hood through 71 left position of two-position three-way valve in valve group 7 to 9 fuel feeding of oil cylinder group；When hood declines, press
Declines button on lower-pilot device 6, controller 5 make the valve 82 in hydraulic power unit 8 work, and oil cylinder group 9 is through two in valve group 7
71 left position of position three-way valve and valve 82 connect fuel tank in hydraulic power unit and slowly decline by hood gravity.
When trailer: pressing the trailer button on manipulation device 6, controller 5 makes the two-position three-way valve 71 and two in valve group 7
Position two-way valve 72 it is electric, two-position three-way valve 73 must not electricity, electric proportional hydraulic motor 4 default is in zero-displacement condition, controls simultaneously
Device 5 makes the motor 83 in hydraulic power unit 8 work, and motor 83 drives hydraulic pump 84 to work, the high pressure oil warp that hydraulic power unit 8 comes out
The right bit stream of two-position three-way valve 71 in valve group 7 releases braking to brake 10, can trailer, at electric proportional hydraulic motor 4
It is not in counter drag in zero delivery.It, at this time can be manually by the two-position three-way valve in valve group 7 if power supply of the whole machine also breaks down
71 and 72 working position of 2/2-way valve become right position, and manipulate the manual pump 81 on hydraulic power unit 8, braking can be released manually,
Electric proportional hydraulic motor 4 is in zero delivery, is not in counter drag.
Embodiment 2
With valve group 7 in 7 alternate embodiments of valve group in Fig. 2, specific embodiment is consistent.
In the present embodiment, two-position three-way valve 71 and 2/2-way valve 72 in embodiment 1 are replaced with two position four-way valves 74
Combination, valve group 7 is made of two position four-way valves 74 and two-position three-way valve 73.
Specific embodiment:
When normal work: after engine start, controller 5 keeps two position four-way valves 74 in valve group 7 electric, two-bit triplet
Valve 73 must be electric, and 73 working position of two-position three-way valve is right position, and G mouth of the oil liquid through hydraulic pump 3 is right through the two-position three-way valve 73 in valve group 7
Position and two position four-way valves, 74 left position flow to brake 10, release braking, by 6 middle gear button of manipulation device, via controller 5 makes
It obtains electric proportional hydraulic motor 4 and reaches setting discharge capacity, by the walking handle in manipulation device 6, hydrostatic running gear work, pressure
Road machine normal walking.When road roller parking braking, the parking button on manipulation device 6 is pressed, controller 5 makes two in valve group 7
Position three-way valve 73 and two position four-way valves 74 must not be electric, and brake 10 is connected to through valve group 7 with fuel tank 1,10 locking electricity ratio of brake
The output device of hydraulic motor 4；When road roller emergency braking, the danger button on manipulation device 6 is pressed, controller 5 makes valve group 7
In two-position three-way valve 73 and two position four-way valves 74 must not electricity, brake 10 is connected to through valve group 7 with fuel tank 1,10 locking of brake
The output device of electric proportional hydraulic motor 4 realizes the emergency braking in walking；When hood needs to rise, manipulation device 6 is pressed
On rising button, controller 5 makes the motor 83 in hydraulic power unit 8 work, and motor 83 drives hydraulic pump 84, through in valve group 7
Hood is risen to 9 fuel feeding of oil cylinder group two position four-way valves, 74 left position；When hood declines, press decline on manipulation device 6 by
Button, controller 5 make the valve 82 in hydraulic power unit 8 work, oil cylinder group 9 through in valve group 7 two position four-way valves, 74 left position and valve 82
Fuel tank slowly declines by hood gravity in connection hydraulic power unit.
When trailer: pressing the trailer button on manipulation device 6, controller 5 obtains two position four-way valves 74 in valve group 7
Electricity, two-position three-way valve 73 must not be electric, and the electric default of proportional hydraulic motor 4 is in zero-displacement condition, while controller 5 makes hydraulic pump
The motor 83 stood in 8 works, and motor 83 drives hydraulic pump 84 to work, and the high pressure oil that hydraulic power unit 8 comes out is through two in valve group 7
The right bit stream of four-way valve 74 releases braking to brake 10, can trailer will not since electric proportional hydraulic motor 4 is in zero delivery
There is counter drag.If power supply of the whole machine also breaks down, two position four-way valves, 74 working position in valve group 7 can be become right manually at this time
Position, and the manual pump 81 on hydraulic power unit 8 is manipulated, braking can be released manually, and electric proportional hydraulic motor 4 is in zero delivery, no
It will appear counter drag.
The above is only the preferred embodiment of the utility model, it should be pointed out that: for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (6)
1. a kind of hydrostatic walking loop brake release system of road roller, it is characterised in that: including fuel tank, filter, hydraulic pump,
Electric proportional hydraulic motor, controller, manipulation device, valve group, hydraulic power unit, oil cylinder group and brake；
Through filter from fuel tank oil suction, hydraulic pump hydraulic fluid port A, B's hydraulic pump are connected with electric proportional hydraulic motor hydraulic fluid port D, C respectively,
Hydrostatic walking closed circuit is constituted, the E mouth of valve group is connect with the G of hydraulic pump mouth, and the F mouth of valve group is connect with fuel tank, the H of valve group
Mouth is connect with hydraulic power unit, and the L mouth of valve group is connect with brake, and the K mouth of valve group is connect with oil cylinder group；
The hydraulic power unit includes valve, motor, hydraulic pump；The motor is connect with hydraulic pump, for driving hydraulic pump works；
The valve group, valve, the mechanical, electrical proportional hydraulic motor of electricity are connect with controller, and controller is connect with manipulation device, passes through behaviour
Vertical device is operated.
2. the hydrostatic walking loop brake release system of road roller according to claim 1, it is characterised in that: the valve group
(7) it is made of the second two-position three-way valve (71), 2/2-way valve (72), the first two-position three-way valve (73).
3. the hydrostatic walking loop brake release system of road roller according to claim 1, it is characterised in that: the valve group
(7) it is made of two position four-way valve (74) and first two-position three-way valve (73).
4. the hydrostatic walking loop brake release system of road roller according to claim 1, it is characterised in that: described hydraulic
Pumping plant further includes manual pump, for releasing braking manually.
5. the hydrostatic walking loop brake release system of road roller according to claim 1, it is characterised in that: the electricity ratio
The discharge capacity default of example hydraulic motor is zero delivery.
6. the hydrostatic walking loop brake release system of road roller according to claim 1, it is characterised in that: the manipulation
Gear button, walking handle, parking button, danger button, rising button, declines button, trailer button are provided on device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821636449.7U CN208950996U (en) | 2018-10-10 | 2018-10-10 | A kind of hydrostatic walking loop brake release system of road roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821636449.7U CN208950996U (en) | 2018-10-10 | 2018-10-10 | A kind of hydrostatic walking loop brake release system of road roller |
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| Publication Number | Publication Date |
|---|---|
| CN208950996U true CN208950996U (en) | 2019-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821636449.7U Active CN208950996U (en) | 2018-10-10 | 2018-10-10 | A kind of hydrostatic walking loop brake release system of road roller |
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| CN (1) | CN208950996U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026866A (en) * | 2018-10-10 | 2018-12-18 | 徐工集团工程机械股份有限公司 | A kind of hydrostatic walking loop brake release system of road roller and control method |
-
2018
- 2018-10-10 CN CN201821636449.7U patent/CN208950996U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026866A (en) * | 2018-10-10 | 2018-12-18 | 徐工集团工程机械股份有限公司 | A kind of hydrostatic walking loop brake release system of road roller and control method |
| CN109026866B (en) * | 2018-10-10 | 2023-11-24 | 徐工集团工程机械股份有限公司 | Braking release system of hydrostatic traveling loop of road roller and control method |
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