CN108691834B - Hydraulic valve device for compression type garbage truck - Google Patents
Hydraulic valve device for compression type garbage truck Download PDFInfo
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- CN108691834B CN108691834B CN201810605762.2A CN201810605762A CN108691834B CN 108691834 B CN108691834 B CN 108691834B CN 201810605762 A CN201810605762 A CN 201810605762A CN 108691834 B CN108691834 B CN 108691834B
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- 230000006835 compression Effects 0.000 title claims abstract description 22
- 238000007906 compression Methods 0.000 title claims abstract description 22
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 71
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention provides a hydraulic valve device for a compression garbage truck, which comprises: a valve body; a left end cover and a right end cover; a valve core; a spring; the first one-way sequence valve, the second one-way sequence valve and the overflow valve; an electromagnetic valve; wherein the spool is switchable between a first position and a second position. The hydraulic valve device for the compression type garbage truck, provided by the embodiment of the invention, has the advantages of simple and reasonable structure and low manufacturing cost, and can realize automatic control on the compression mechanism of the compression type garbage truck.
Description
Technical Field
The invention relates to a hydraulic valve device, in particular to a hydraulic valve device for a compression type garbage truck.
Background
At present, a garbage truck which is common in cities is a rear-loading compression type garbage truck. The garbage disposal vehicle has a closed carriage, integrates collection, transportation and self-unloading into a whole, and reduces the problem of secondary pollution in the garbage transportation process to a great extent. The compression mechanism of the existing compression type garbage truck consists of two scraper oil cylinders, two sliding plate oil cylinders, a scraper and a sliding plate. The working steps are divided into four stages of turning up the scraper, descending the sliding plate, digging down the scraper and ascending the sliding plate according to time. In the initial state, the garbage truck may be in a non-working state such as parking or transportation, and at the moment, the scraper cylinder is in an extension state, and the slide plate cylinder is in a contraction state. The compression garbage truck of the existing compression type at home is mostly operated manually to the control of the compression mechanism, the labor intensity is relatively large, the working efficiency is relatively low, the number of required workers is large, and the labor cost is high. When the garbage truck loads garbage, the sequential actions of the scraper and the sliding plate are realized through the manual control of a sanitation worker and the control of a travel switch, but the garbage truck has more defects, such as the need of manual operation during reversing, more complexity, greatly reduced working efficiency, impact and the possibility of influencing the work of the garbage truck due to the working error of the sanitation worker; because the scraper oil cylinder and the slide plate oil cylinder are respectively controlled, a manual multi-way valve, an electromagnetic reversing valve, a hydraulic control reversing valve and other sequence valves are adopted, and the oil path is complex and the cost is high.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the invention aims to provide the hydraulic valve device for the compression-type garbage truck, which has simple and reasonable structure and low manufacturing cost and can automatically control the compression mechanism of the compression-type garbage truck.
According to the embodiment of the invention, the hydraulic valve device for the compression type garbage truck comprises:
the valve body is provided with a valve hole, a first oil port, a second oil port, a third oil port, a fourth oil port, a fifth oil port, a sixth oil port and a first flow passage, the valve hole penetrates through the valve body along the left-right direction, the valve hole comprises a first through flow groove, a second through flow groove, a third through flow groove and a fourth through flow groove which are sequentially arranged from left to right at intervals, the first oil port is connected with the second through flow groove, the second oil port is connected with the fourth through flow groove, the third oil port and the fifth oil port are connected with the third through flow groove, the fourth oil port and the sixth oil port are connected with the first through flow groove, the first through flow groove and the third through flow groove are connected through the first flow passage, and a damping hole is arranged on the first flow passage and is adjacent to the third through flow groove;
the left end cover is arranged on the valve body and used for closing a left opening end of the valve hole, a left control cavity communicated with the valve hole is formed in the left end cover, the right end cover is arranged on the valve body and used for closing a right opening end of the valve hole, a right control cavity communicated with the valve hole is formed in the right end cover, and the left control cavity is connected with the first flow channel;
the valve core is arranged in the valve hole in a manner of moving left and right, and is provided with an axial valve core hole, a first radial valve core hole which is opened on the peripheral wall of the valve core and communicated with the left end of the axial valve core hole, and a second radial valve core hole which is opened on the peripheral wall of the valve core and communicated with the right end of the axial valve core hole;
the spring is arranged in the right control cavity, and two ends of the spring respectively abut against the right end cover and the right end of the valve core so as to push the valve core leftwards;
the first check sequence valve is arranged on the valve body and used for disconnecting the sixth oil port from the first through flow groove, the second check sequence valve is arranged on the valve body and used for disconnecting the fifth oil port from the third through flow groove, and the overflow valve is arranged on the valve body and used for disconnecting the first through flow groove from the first flow passage;
the electromagnetic valve is arranged on the valve body and used for disconnecting the first oil port from the second through-flow groove;
wherein the spool is switchable between a first position and a second position.
Advantageously, when the spool is in the first position, the spring pushes the spool to the left to abut the left end of the spool against the left end cap, the spool closes the first radial spool hole, the spool communicates the first and second vent grooves and the spool communicates the third and fourth vent grooves, and the spool communicates the second radial spool hole with both the third and fourth vent grooves.
Advantageously, when the valve core is in the second position, the valve core is forced by an external force to move rightward against the elastic force of the spring, the valve core makes the first radial valve core hole communicate with the first through-flow groove, the valve core makes the first through-flow groove disconnect from the second through-flow groove and makes the second through-flow groove connect with the third through-flow groove, the valve core makes the third through-flow groove disconnect from the fourth through-flow groove, and the valve core makes the second radial valve core hole communicate with the fourth through-flow groove.
Advantageously, the first oil port is connected with the second through-flow groove through a second flow passage provided on the valve body.
Advantageously, the sixth oil port is connected with the first through-flow groove through a third flow passage provided on the valve body.
Advantageously, the fifth oil port is connected with the third flow passing groove through a fourth flow passage arranged on the valve body.
Advantageously, when the electromagnetic valve is powered off, the electromagnetic valve disconnects the first oil port from the second through-flow groove; when the electromagnetic valve is electrified, the electromagnetic valve enables the first oil port to be communicated with the second through-flow groove.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic illustration of a hydraulic valve arrangement for a compression-type refuse collection vehicle according to one embodiment of the present invention;
3 FIG. 3 2 3 is 3a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 line 3A 3- 3A 3 of 3 FIG. 3 1 3; 3
FIG. 3 is a hydraulic schematic diagram of a hydraulic valve arrangement for a compression-type garbage truck according to one embodiment of the present invention;
FIG. 4 is a hydraulic schematic diagram of a particular application scenario of a hydraulic valve arrangement for a compression-type garbage truck according to an embodiment of the present invention;
fig. 5 is a schematic view of a valve spool of a hydraulic valve arrangement for a compression-type garbage truck when reversing according to one embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A hydraulic valve apparatus for a compression-type garbage truck according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 5, a hydraulic valve apparatus for a compression-type garbage truck according to an embodiment of the present invention includes: the valve comprises a valve body 1, a left end cover 3a, a right end cover 3b, a valve core 2, a spring 4, a first one-way sequence valve 6, a second one-way sequence valve 7, an overflow valve 5 and an electromagnetic valve 8.
Specifically, the valve body 1 has a valve hole, a first port P, a second port T, a third port C1, a fourth port V1, a fifth port C2, a sixth port V2, and a first flow passage 105.
The valve hole runs through the valve body 1 along the left-right direction, and the valve hole comprises a first through flow groove 101, a second through flow groove 102, a third through flow groove 103 and a fourth through flow groove 104 which are sequentially arranged from left to right at intervals.
The first oil port P is connected with the second through flow groove 102, the second oil port T is connected with the fourth through flow groove 104, the third oil port C1 and the fifth oil port C2 are both connected with the third through flow groove 103, the fourth oil port V1 and the sixth oil port V2 are both connected with the first through flow groove 101, the first through flow groove 101 is connected with the third through flow groove 103 through the first flow passage 105, and the first flow passage 105 is provided with a damping hole 1d adjacent to the third through flow groove 103. Advantageously, the first port P is connected to the second through-flow groove 102 via a second flow passage 106 provided in the valve body 1. The sixth port V2 is connected to the first flow channel 101 via a third flow passage 107 provided in the valve body 1. The fifth port C2 is connected to the fourth flow passage 108 of the third flow passage 103 provided in the valve body 1.
The left end cover 3a is arranged on the valve body 1 and used for sealing the left opening end of the valve hole, the left end cover 3a is provided with a left control cavity 1a communicated with the valve hole, the right end cover 3b is arranged on the valve body 1 and used for sealing the right opening end of the valve hole, and the right end cover 3b is provided with a right control cavity 1b communicated with the valve hole. Left control chamber 1a is connected to first flow channel 105.
The valve core 2 is disposed in the valve hole in a left-right movable manner, and the valve core 2 has an axial valve core hole 202, a first radial valve core hole 203 opened in the outer peripheral wall of the valve core 2 and communicated with the left end of the axial valve core hole 202, and a second radial valve core hole 201 opened in the outer peripheral wall of the valve core 2 and communicated with the right end of the axial valve core hole 202.
The spring 4 is arranged in the right control cavity 1b, and two ends of the spring 4 respectively abut against the right end cover 3b and the right end of the valve core 2 so as to push the valve core 2 leftwards.
The first one-way sequence valve 6 is arranged on the valve body 1 and used for disconnecting the sixth port V2 from the first through flow groove 101, the second one-way sequence valve 7 is arranged on the valve body 1 and used for disconnecting the fifth port C2 from the third through flow groove 103, and the overflow valve 5 is arranged on the valve body 1 and used for disconnecting the first through flow groove 101 from the first flow channel 105.
The electromagnetic valve 8 is arranged on the valve body 1 and used for disconnecting the first oil port P from the second through-flow groove 102. Advantageously, when the solenoid valve 8 is de-energized, the solenoid valve 8 disconnects the first port P from the second through-flow slot 102; when the solenoid valve 8 is energized, the solenoid valve 8 communicates the first port P with the second through-flow groove 102.
Wherein the spool 2 is switchable between a first position and a second position.
More specifically, as shown in fig. 1 and 2, when the spool 2 is in the first position, the spring 4 pushes the spool 2 leftward to make the left end of the spool 2 abut against the left end cover 3a, the spool 2 closes the first radial spool hole 203, the spool 2 makes the first vent groove 101 communicate with the second vent groove 102 and the spool 2 makes the third vent groove 103 communicate with the fourth vent groove 104, and the spool 2 makes the second radial spool hole 201 communicate with both the third vent groove 103 and the fourth vent groove 104.
As shown in fig. 5, when the valve element 2 is in the second position, the valve element 2 is moved rightward by an external force against the elastic force of the spring 4, the valve element 2 connects the first radial valve element hole 203 with the first vent groove 101, the valve element 2 disconnects the first vent groove 101 from the second vent groove 102 and connects the second vent groove 102 with the third vent groove 103, the valve element 2 disconnects the third vent groove 103 from the fourth vent groove 104, and the valve element 2 connects the second radial valve element hole 201 with the fourth vent groove 104.
The working principle of a hydraulic valve device for a compression-type garbage truck according to an embodiment of the present invention will be described with reference to the accompanying drawings:
for convenience of description, two scraper cylinders and a slide plate cylinder in practical application are simplified into a scraper cylinder and a slide plate cylinder, as shown in fig. 4, when in application, a first oil port P is connected with an outlet of a hydraulic pump 9, a second oil port T is connected with an oil tank 10, a fourth oil port V1 is connected with a rod cavity of the scraper cylinder 11, and a third oil port C1 is connected with a rodless cavity of the scraper cylinder 11; the sixth oil port V2 is connected with the rodless cavity of the ram cylinder 12, and the fifth oil port C2 is connected with the rod cavity of the ram cylinder 12.
When the garbage truck is in a non-working state such as parking or transportation, the electromagnetic valve 8 is controlled to be powered off, the electromagnetic valve 8 is in a cut-off state, hydraulic oil at the outlet of the hydraulic pump 9 cannot enter the scraper cylinder 11 and the slide plate cylinder 12, the scraper cylinder 11 is in a fully extended state, and the slide plate cylinder 12 is in a fully retracted state; the valve spool 2 is in the position shown in figure 1 under the force of the spring 4.
When the garbage truck loads garbage and needs to be compressed, the control solenoid valve 8 is powered on, the solenoid valve 8 conducts the first oil port P and the second circulation groove 102, oil at the outlet of the hydraulic pump 9 enters the second circulation groove 102 after passing through the oil port P, at the moment, the valve core 2 is located at the position shown in fig. 1 under the action force of the spring 4, the oil enters the rod cavity of the scraper cylinder 11 through the first circulation groove 101 and the fourth oil port V1 from the second circulation groove 102, the scraper cylinder 11 is pushed to retract, and the oil in the rodless cavity of the scraper cylinder 11 returns to the oil tank 10 through the third circulation groove 103, the fourth circulation groove 104 and the second oil port T from the third oil port C1.
When the scraper cylinder 11 retracts to the head, the pressure of the fourth oil port V1 rises, when the pressure rises to the set pressure of the first one-way sequence valve 6, the first one-way sequence valve 6 is opened, oil enters the rodless cavity of the slide plate cylinder 12 through the second through-flow groove 102, the first through-flow groove 101 and the sixth oil port V2 in sequence from the first oil port P to push the slide plate cylinder 12 to extend, the oil in the rod cavity of the slide plate cylinder 12 acts on the second one-way sequence valve 7 through the fifth oil port C2, the second one-way sequence valve 7 is opened, the oil in the fifth oil port C2 returns to the second oil port T through the third through-flow groove 103 and the fourth through-flow groove 104, and the slide plate cylinder 12 continuously extends.
When the slide plate cylinder 12 extends to the head, the pressure of the fourth port V1 continues to rise, when the pressure rises to the set pressure of the overflow valve 5, the overflow valve 5 is opened, the oil of the fourth port V1 enters the left control chamber 1a through the first flow channel 105, pushes the valve element 2 to move rightward, until the position shown in fig. 5 is reached, at this time, the overflow valve 5 is already closed, the oil of the first port P enters the left control chamber 1a through the second flow channel 102, the third flow channel 103, the damping hole 1d and the first flow channel 105, the valve element 2 is maintained to continue to be at the position shown in fig. 5, and the right control chamber 1b is always connected with the second port T and is in a non-pressure state. Thus, the oil at the outlet of the hydraulic pump 9 enters the rodless cavity of the scraper cylinder 11 through the first port P, the second through-flow groove 102, the third through-flow groove 103 and the third port C1 to push the scraper cylinder 11 to extend, and the oil in the rod cavity of the scraper cylinder 11 returns to the port T through the fourth port V1, the first through-flow groove 101, the through-flow hole 203, the through-flow hole 202 and the through-flow hole 201. Thus, the squeegee cylinder 11 is continuously extended.
When the scraper cylinder 11 extends to the head, the pressure of the third oil port C1 rises, when the pressure rises to the set pressure of the second one-way sequence valve 7, the second one-way sequence valve 7 is opened, oil passes through the electromagnetic valve 8, the second through-flow groove 102, the third through-flow groove 103, the second one-way sequence valve 7, the oil port C2 in sequence from the oil port P and then enters the rod cavity of the slide plate cylinder 12 to push the slide plate cylinder 12 to retract, the oil in the rodless cavity of the slide plate cylinder 12 acts on the spool of the first one-way sequence valve 6 through the oil port V2 to push the spool to open (which is equivalent to the function of a one-way valve at this time, because the acting area is large), and the oil of the oil port V2 returns to the second T through the first through-flow groove 101, the first radial spool hole 203, the axial spool hole 202. The ram cylinder 12 is continuously retracted. When the slide plate oil cylinder 12 retracts to the bottom, the control electromagnetic valve 8 is powered off.
The hydraulic valve device for the compression type garbage truck has the advantages that:
(1) the structure is simple, the integration level is high, the installation is convenient, and the cost is low;
(2) the control of the retraction of the scraper cylinder, the extension of the slide plate cylinder, the extension of the scraper cylinder and the retraction of the slide plate cylinder can be realized automatically and sequentially only by supplying oil, the manual operation of personnel is not needed, and the automation degree is high.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although the embodiments of the present invention have been shown and described, it is understood that the embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the embodiments without departing from the scope of the present invention.
Claims (7)
1. A hydraulic valve arrangement for a compression-type refuse collection vehicle, comprising:
the valve body is provided with a valve hole, a first oil port, a second oil port, a third oil port, a fourth oil port, a fifth oil port, a sixth oil port and a flow channel, the valve hole penetrates through the valve body along the left-right direction, the valve hole comprises a first through flow groove, a second through flow groove, a third through flow groove and a fourth through flow groove which are sequentially arranged from left to right at intervals, the first oil port is connected with the second through flow groove, the second oil port is connected with the fourth through flow groove, the third oil port and the fifth oil port are both connected with the third through flow groove, the fourth oil port and the sixth oil port are both connected with the first through flow groove, the first through flow groove and the third through flow groove are connected through the first flow channel, and a damping hole is arranged on the first flow groove and is adjacent to the third through flow groove;
the left end cover is arranged on the valve body and used for closing a left opening end of the valve hole, a left control cavity communicated with the valve hole is formed in the left end cover, the right end cover is arranged on the valve body and used for closing a right opening end of the valve hole, a right control cavity communicated with the valve hole is formed in the right end cover, and the left control cavity is connected with the first flow channel;
the valve core is arranged in the valve hole in a manner of moving left and right, and is provided with an axial valve core hole, a first radial valve core hole which is opened on the peripheral wall of the valve core and communicated with the left end of the axial valve core hole, and a second radial valve core hole which is opened on the peripheral wall of the valve core and communicated with the right end of the axial valve core hole;
the spring is arranged in the right control cavity, and two ends of the spring respectively abut against the right end cover and the right end of the valve core so as to push the valve core leftwards;
the first check sequence valve is arranged on the valve body and used for disconnecting the sixth oil port from the first through flow groove, the second check sequence valve is arranged on the valve body and used for disconnecting the fifth oil port from the third through flow groove, and the overflow valve is arranged on the valve body and used for disconnecting the first through flow groove from the first flow passage;
the electromagnetic valve is arranged on the valve body and used for disconnecting the first oil port from the second through-flow groove;
wherein the spool is switchable between a first position and a second position.
2. The hydraulic valve arrangement for a compression garbage truck of claim 1, wherein when the spool is in the first position, the spring urges the spool to the left to cause the left end of the spool to abut the left end cap, the spool closes the first radial spool bore, the spool communicates the first and second vent channels and the spool communicates the third and fourth vent channels, the spool communicates the second and third and fourth radial spool bores.
3. The hydraulic valve device for a compression garbage truck according to claim 1, wherein when the spool is in the second position, the spool is moved rightward by an external force against the elastic force of the spring, the spool connects the first radial spool hole to the first through-flow groove, the spool disconnects the first through-flow groove from the second through-flow groove and connects the second through-flow groove to the third through-flow groove, the spool disconnects the third through-flow groove from the fourth through-flow groove, and the spool connects the second radial spool hole to the fourth through-flow groove.
4. The hydraulic valve arrangement for a compression garbage truck as claimed in claim 1, wherein the first oil port is connected to the second through-flow channel via a second flow passage provided in the valve body.
5. The hydraulic valve device for the compression garbage truck as claimed in claim 1, wherein the sixth oil port is connected with the first through-flow groove through a third flow channel arranged on the valve body.
6. The hydraulic valve device for the compression garbage truck as claimed in claim 1, wherein the fifth oil port is connected with the third flow passing groove through a fourth flow passage provided on the valve body.
7. The hydraulic valve arrangement for a compression garbage truck according to claim 1, wherein when the solenoid valve is de-energized, the solenoid valve disconnects the first oil port from the second through-flow channel; when the electromagnetic valve is electrified, the electromagnetic valve enables the first oil port to be communicated with the second through-flow groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810605762.2A CN108691834B (en) | 2018-06-13 | 2018-06-13 | Hydraulic valve device for compression type garbage truck |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810605762.2A CN108691834B (en) | 2018-06-13 | 2018-06-13 | Hydraulic valve device for compression type garbage truck |
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| Publication Number | Publication Date |
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| CN108691834A CN108691834A (en) | 2018-10-23 |
| CN108691834B true CN108691834B (en) | 2020-06-02 |
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| CN201810605762.2A Expired - Fee Related CN108691834B (en) | 2018-06-13 | 2018-06-13 | Hydraulic valve device for compression type garbage truck |
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| CN111153088A (en) * | 2020-02-07 | 2020-05-15 | 邵延荣 | Control device for filling mechanism of compression type garbage truck |
| CN111204539B (en) * | 2020-02-22 | 2022-07-01 | 湖北五环专用汽车有限公司 | Filling mechanism of compression garbage truck |
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| CN106499688A (en) * | 2016-12-20 | 2017-03-15 | 湖南鸿辉科技有限公司 | A kind of garbage-compressing control integral multitandem valve and control method |
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2018
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| CN205315374U (en) * | 2015-12-22 | 2016-06-15 | 徐州徐工环境技术有限公司 | Swing arm formula compression garbage truck hydraulic control system |
| CN106499688A (en) * | 2016-12-20 | 2017-03-15 | 湖南鸿辉科技有限公司 | A kind of garbage-compressing control integral multitandem valve and control method |
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| CN108691834A (en) | 2018-10-23 |
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