CN203641140U - Travel motor control valve of excavator - Google Patents
Travel motor control valve of excavator Download PDFInfo
- Publication number
- CN203641140U CN203641140U CN201320363671.5U CN201320363671U CN203641140U CN 203641140 U CN203641140 U CN 203641140U CN 201320363671 U CN201320363671 U CN 201320363671U CN 203641140 U CN203641140 U CN 203641140U
- Authority
- CN
- China
- Prior art keywords
- valve
- motor control
- shuttle
- excavator
- running motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a travel motor control valve of an excavator. The travel motor control valve comprises a valve block, a groove, a concave position, a cushion overflow valve, a one-way valve, a balance braking valve, an oil charging valve, a shuttle valve and a throttling valve, and is characterized in that a shuttle valve outlet, the groove, a pressure outlet, an oil charging opening, a pressure inlet and the concave position are formed on the valve block; the cushion overflow valve, the oil charging valve, the one-way valve, the shuttle valve, the balance braking valve and the throttling valve are installed inside the valve block; the pressure inlet is connected with a multi-way valve; the pressure outlet and the shuttle valve outlet are connected with a travel motor. Compared with the prior art, the travel motor control valve has the advantages of compact structure, convenience in installation and maintenance, reliability in braking, small braking impact and the like.
Description
Technical field
The utility model belongs to excavator accessory, especially a kind of running motor control valve of wheel excavator.
Background technique
At present, universal wheel excavator both at home and abroad, in its traveller, operated by rotary motion two is overlapped equilibrium valve, and for controlling braking, the repairing of running motor, its function is relatively simple, but because it is valve piece fabricated structure, therefore volume more greatly, heavier, connecting pipeline is many, expensive, simultaneously because it arranges two split type cover equilibrium valves, so the harmony of its action is relatively poor, cause braking to impact large, steady not.Due to expensive, the hydraulically powered wheel excavator of part does not even configure equilibrium valve, in the time that pressure introduction port does not have pressure oil input, and running motor is also in running, but do not have fluid to supplement, can make running motor entrance point inhale empty, produce hole, cavitation phenomenon and damage system.
Summary of the invention
The purpose of this utility model is to provide a kind of compact structure, convenient for installation and maintenance, braking is reliable,
The running motor control valve of little excavator is impacted in braking.
Technical solution of the present utility model is such, a kind of running motor control valve of excavator, comprise valve piece, groove, recess, buffer overflow valve, one-way valve, balancing brake valve, Fill valve, shuttle valve and throttle valve, it is characterized in that, described valve piece is provided with shuttle valve group delivery outlet, groove, pressure output, repairing mouth, pressure introduction port, recess, the inner buffer overflow valve of installing of described valve piece, Fill valve, one-way valve, shuttle valve, brake balancing valve and throttle valve, described pressure introduction port is connected with multi-way valve, described pressure output and shuttle valve delivery outlet are connected with running motor.
Brake balancing valve is installed in described groove.
Fill valve, one-way valve, shuttle valve, throttle valve are installed on described recess.
On described valve piece, have 3 the mounting hole of following closely hole and valve was installed, valve piece inside is provided with annular groove and inner passage.
The utility model compared with prior art, has the advantages such as compact structure, convenient for installation and maintenance, braking is reliable, braking impact is little.
Brief description of the drawings:
Fig. 1 is overall structure worm's eye view of the present utility model.
Fig. 2 is overall structure plan view of the present utility model.
Fig. 3 is overall structure plan view of the present utility model.
Fig. 4 is A-A sectional view in Fig. 3 of the present utility model.
Fig. 5 is B-B sectional view in Fig. 3 of the present utility model.
Fig. 6 is C-C sectional view in Fig. 3 of the present utility model.
Fig. 7 is D-D sectional view in Fig. 2 of the present utility model.
In Fig. 1 ~ Fig. 7, valve piece (1), buffer overflow valve (2), Fill valve (3), one-way valve (4),
Shuttle valve (5), brake balancing valve (6), mistake nail hole (7), shuttle valve group delivery outlet (8), groove 9, pressure output (10,11), repairing mouth (12), pressure introduction port (13,14), recess (15), throttle valve (16), annular groove (17,18,19).
Embodiment:
Most preferred embodiment of the present utility model is such, shown in Fig. 7, a kind of running motor control valve of excavator, comprise valve piece, groove, recess, buffer overflow valve, one-way valve, balancing brake valve, Fill valve, shuttle valve and throttle valve, wherein, described valve piece 1 is provided with shuttle valve group delivery outlet 8, groove 9, pressure output 10, pressure output 11, repairing mouth 12, pressure introduction port 13, pressure introduction port 14, recess 15, the inner buffer overflow valve 2 of installing of described valve piece 1, Fill valve 3, one-way valve 4, shuttle valve 5, brake balancing valve 6 and throttle valve 16, described pressure introduction port 13, 14 are connected with multi-way valve, described pressure output 10, 11 and shuttle valve delivery outlet 8 be connected with running motor.
The interior installation brake balancing valve 6 of described groove 9; Fill valve 3, one-way valve 4, shuttle valve 5, throttle valve 16 are installed on described recess 15; On described valve piece 1, have 3 the mounting hole of following closely hole 7 and valve was installed, valve piece 1 inside is provided with annular groove 17,18,19 and inner passage.
Described pressure introduction port 13,14 is connected with multi-way valve, pressure output 10,11 and shuttle valve delivery outlet 8 are connected with running motor, in the time of pressure introduction port 13 cut-in pressure oil, first strand of pressure oil is pushed left side one-way valve 4 open, through valve piece inner passage, export running motor to from pressure output 11, return pressure output 10, then flow to annular groove 19 through inner passage; Second strand of pressure oil, through inner passage, flow to throttle valve 16, through throttle valve 16 damping holes, flow to the left chamber of balancing brake valve 6, the spool that overcomes spring force promotion balancing brake valve 6 slides to the right, and annular groove 19,18 is connected, thereby makes first strand of pressure oil flow to annular groove 18 from annular groove 19, again through the inner passage of repairing mouth 12, the Fill valve 3 of pushing right side open, flows to pressure introduction port 10, finally flows to multi-way valve, form loop, thereby wheel excavator is walked forward.Retreat as needs make wheel excavator, process, with upper contrary,, from pressure introduction port 10 cut-in pressure oil, flows back into multi-way valve from pressure introduction port 11.The 3rd strand of pressure oil, after shuttle valve is selected, is delivered to the G mouth of running motor from its delivery outlet 8, make running motor automatically adjust discharge capacity according to walking pressure size, to obtain suitable output torque and the speed of travel.
In the wheel excavator walking of advancing, when pressure introduction port 13 does not have pressure oil input, second strand of above-mentioned pressure oilhole disappears, and under the effect of spring force, promotes balancing brake valve 6 and is back to meta, and annular groove 18,19 is closed, disconnected; Due to wheel excavator advance walking inertia; running motor is also in running; and now change pump into, make fluid be delivered to annular groove 19 from motor through pressure output 10, inner passage, because annular groove 19,18 has disconnected; fuel-displaced path is blocked; oil pressure sharply rises, arrive buffer overflow valve 2 set force value time, buffer overflow valve 2 is opened; limiting pressure raises, protective system.Because running motor outlet end pressure raises, produce reactive torque, thereby make wheel excavator braking.
As mentioned above, when pressure introduction port 13 does not have pressure oil when input, and running motor is also in running, if do not have fluid to supplement, can make running motor entrance point inhale empty, produces hole, cavitation phenomenon and damage system.Now, replenishment valve 3 is opened supplementary fluid, thereby avoids hole, cavitation erosion to occur.
In the time that the fuel delivery of wheel excavator in descending state or pressure introduction port 13 reduces, the pressure drop of pressure introduction port 13, the pressure in balancing brake valve 6 left chambeies is also declined, under spring-force driven dual, the spool of balancing brake valve 6 is moved to the left, and the area of passage of annular groove 18,19 is reduced, thereby annular groove 19 ends produce certain back pressure, make running motor produce certain plugging power, wheel excavator is slowed down, thereby obtain the needed speed of travel.
Claims (4)
1. the running motor control valve of an excavator, comprise valve piece, groove, recess, buffer overflow valve, one-way valve, balancing brake valve, Fill valve, shuttle valve and throttle valve, it is characterized in that, described valve piece (1) is provided with shuttle valve group delivery outlet (8), groove (9), pressure output (10, 11), repairing mouth (12), pressure introduction port (13, 14), recess (15), described valve piece (1) inner chamber is installed buffer overflow valve (2), Fill valve (3), one-way valve (4), shuttle valve (5), brake balancing valve (6) and throttle valve (16), described pressure introduction port (13, 14) be connected with multi-way valve, described pressure output (10, 11) and shuttle valve delivery outlet 8 be connected with running motor.
2. the running motor control valve of excavator as claimed in claim 1, is characterized in that, brake balancing valve (6) is installed in described groove (9).
3. the running motor control valve of excavator as claimed in claim 1, is characterized in that, upper Fill valve (3), one-way valve (4), shuttle valve (5), the throttle valve (16) installed of described recess (15).
4. the running motor control valve of excavator as claimed in claim 1, is characterized in that, has 3 mounting holes that nail hole (7) and valve were installed on described valve piece (1), and valve piece (1) inside is provided with annular groove (17,18,19) and inner passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320363671.5U CN203641140U (en) | 2013-06-24 | 2013-06-24 | Travel motor control valve of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320363671.5U CN203641140U (en) | 2013-06-24 | 2013-06-24 | Travel motor control valve of excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203641140U true CN203641140U (en) | 2014-06-11 |
Family
ID=50872388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320363671.5U Expired - Fee Related CN203641140U (en) | 2013-06-24 | 2013-06-24 | Travel motor control valve of excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203641140U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334471A (en) * | 2013-06-24 | 2013-10-02 | 玉林市富山液压件制造有限公司 | Travel motor control valve of excavator |
-
2013
- 2013-06-24 CN CN201320363671.5U patent/CN203641140U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334471A (en) * | 2013-06-24 | 2013-10-02 | 玉林市富山液压件制造有限公司 | Travel motor control valve of excavator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20200624 |