CN107255104A - Snow-clearing car hydraulic pressure obstacle avoidance system - Google Patents
Snow-clearing car hydraulic pressure obstacle avoidance system Download PDFInfo
- Publication number
- CN107255104A CN107255104A CN201710691895.1A CN201710691895A CN107255104A CN 107255104 A CN107255104 A CN 107255104A CN 201710691895 A CN201710691895 A CN 201710691895A CN 107255104 A CN107255104 A CN 107255104A
- Authority
- CN
- China
- Prior art keywords
- snow
- valve
- way electromagnetic
- fluid port
- electromagnetic directional
- 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.)
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Classifications
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
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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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- 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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of snow-clearing car hydraulic pressure obstacle avoidance system, it belongs to snow-clearing car control technology field.It solves the avoidance being difficult to strong barrier that common double rocker mechanism is present in the prior art, easily causes the defect of flowing snow scraper damage.Its agent structure includes hydraulic pump, motor and the first check valve, the oil-out of hydraulic pump is connected with the oil inlet of the first check valve, the oil-out of first check valve is connected with the hydraulic fluid port P of three-position four-way electromagnetic directional valve I and the hydraulic fluid port P of three-position four-way electromagnetic directional valve II respectively, the hydraulic fluid port A of three-position four-way electromagnetic directional valve I is connected with the rodless cavity of propelling cylinder, and the hydraulic fluid port B of three-position four-way electromagnetic directional valve I is connected with the rod chamber of propelling cylinder；The hydraulic fluid port A of three-position four-way electromagnetic directional valve II is connected with the rod chamber of hoist cylinder, and the hydraulic fluid port B of three-position four-way electromagnetic directional valve II is connected with the rodless cavity of hoist cylinder.Present invention is mainly used on snow-clearing car.
Description
Technical field：
The invention belongs to snow-clearing car control technology field, specifically, more particularly to a kind of snow-clearing car hydraulic pressure obstacle avoidance system.
Background technology：
With the development and the continuous improvement of Mechanization Technique level of society, for floating snow, ice and slush mixture, people
In the urgent need to there is a kind of higher machinery of functional, automaticity to replace traditional method that clears the snow.Snow-clearing car is on road
It might have barrier when carrying out snow-removing operation on face, below snow deposit, such as the step or well cover for sewer of projection and be scattered
Weight block etc..Because they are by snow cover, driver can not see；If can not avoidance in time, will result in snow-clearing car
The infringement of snow scraper mechanism, or even cause the injury of personnel.Snow-clearing car avoidance mechanism is typically made up of double rocker mechanism, double rocking lever machine
Structure is by upper and lower rocking bar, the composition such as rocking bar core, back-moving spring, for avoiding weak barrier；And strong barrier is directed to, such as 15~
The barrier of 25mm height, common double rocker mechanism is difficult to the avoidance to strong barrier, easily causes the damage of flowing snow scraper.
The content of the invention：
In order to solve common double rocker mechanism is present in the prior art the avoidance being difficult to strong barrier, easily cause
The shortcoming that flowing snow scraper is damaged, the invention provides a kind of snow-clearing car hydraulic pressure obstacle avoidance system for being different from prior art, it can be real
Now to the avoidance of strong barrier, it is to avoid damage flowing snow scraper.
To achieve these goals, the present invention is realized using following technical scheme：
A kind of snow-clearing car hydraulic pressure obstacle avoidance system, including hydraulic pump, motor and the first check valve, hydraulic pump and motor connection,
The oil inlet of hydraulic pump is connected with fuel tank, and the oil-out of hydraulic pump is connected with the oil inlet of the first check valve, the first check valve
Oil-out is connected with the hydraulic fluid port P of three-position four-way electromagnetic directional valve I and the hydraulic fluid port P of three-position four-way electromagnetic directional valve II respectively, three
The hydraulic fluid port A of four-way electromagnetic reversing valve I is connected by the second check valve and flow divider with the rodless cavity of propelling cylinder, 3-position 4-way electricity
The hydraulic fluid port B of magnetic reversal valve I is connected with the rod chamber of propelling cylinder；The hydraulic fluid port A of three-position four-way electromagnetic directional valve II by balanced valve,
Second check valve and flow divider are connected with the rod chamber of hoist cylinder, hydraulic fluid port B and the lifting oil of three-position four-way electromagnetic directional valve II
The rodless cavity connection of cylinder.
Further, the snow-clearing car hydraulic pressure obstacle avoidance system is provided with choke valve, oil inlet and the lifting oil of the choke valve
The rodless cavity connection of cylinder, the oil-out of choke valve is connected with the hydraulic fluid port B of three-position four-way electromagnetic directional valve II.
Further, the snow-clearing car hydraulic pressure obstacle avoidance system is provided with oil filter, and the oil inlet of oil filter is connected with fuel tank, filters
The oil-out of oily device is connected with hydraulic pump.
Further, the snow-clearing car hydraulic pressure obstacle avoidance system is provided with overflow valve, the oil inlet of overflow valve and the first check valve
Connection, the oil-out of overflow valve is connected with fuel tank.
Further, pressure switch is provided with the rodless cavity of hoist cylinder and propelling cylinder.
Further, pressure meter switch and pressure gauge are provided with the rodless cavity of hoist cylinder and propelling cylinder.
Compared with prior art, the beneficial effects of the invention are as follows：
Using hydraulic drive obstacle avoidance system, it is possible to achieve to the avoidance of strong barrier, it is to avoid damage flowing snow scraper；Using balance
Valve, plays balanced action, and the locking to balanced loop is good；Flow divider can ensure that flow is identical when by uneven load, so as to protect
Demonstrate,prove system synchronization.
Brief description of the drawings：
Fig. 1 is hydraulic system principle figure of the invention.
In figure：1st, oil filter；2nd, hydraulic pump；3rd, motor；4th, the first check valve；5th, three-position four-way electromagnetic directional valve II；6、
Balanced valve；7th, choke valve；8th, the second check valve；9th, hoist cylinder；10th, pressure gauge；11st, pressure meter switch；12nd, propelling cylinder；
13rd, pressure switch；14th, flow divider；15th, three-position four-way electromagnetic directional valve I；16th, overflow valve；17th, fuel tank.
Embodiment：
Below by specific embodiment and the invention will be further described with reference to accompanying drawing.
Embodiment 1：
As shown in figure 1, a kind of snow-clearing car hydraulic pressure obstacle avoidance system, including hydraulic pump 2, the check valve 4 of motor 3 and first, hydraulic pressure
Pump 2 is connected with motor 3, and the oil inlet of hydraulic pump 2 is connected with fuel tank 17, the oil-feed of the oil-out of hydraulic pump 2 and the first check valve 4
Mouthful connection, the hydraulic fluid port P and 3-position 4-way electromagnetism of the oil-out of the first check valve 4 respectively with three-position four-way electromagnetic directional valve I 15 is changed
To the hydraulic fluid port P connections of valve II 5, the hydraulic fluid port A of three-position four-way electromagnetic directional valve I 15 is by the second check valve 8 and flow divider 14 with pushing away
Enter the rodless cavity connection of oil cylinder 12, the hydraulic fluid port B of three-position four-way electromagnetic directional valve I 15 is connected with the rod chamber of propelling cylinder 12；Three
The hydraulic fluid port A of position four-way electromagnetic reversing valve II 5 has bar by balanced valve 6, the second check valve 8 and flow divider 14 and hoist cylinder 9
Chamber is connected, and the hydraulic fluid port B of three-position four-way electromagnetic directional valve II 5 is connected with the rodless cavity of hoist cylinder 9.
Embodiment 2：
A kind of snow-clearing car hydraulic pressure obstacle avoidance system, the snow-clearing car hydraulic pressure obstacle avoidance system is provided with choke valve 7, the choke valve 7
Oil inlet be connected with the rodless cavity of hoist cylinder 9, the oil-out of choke valve 7 and the hydraulic fluid port B of three-position four-way electromagnetic directional valve II 5
Connection；The snow-clearing car hydraulic pressure obstacle avoidance system is provided with oil filter 1, and the oil inlet of oil filter 1 is connected with fuel tank 17, oil filter 1
Oil-out is connected with hydraulic pump 2；Snow-clearing car hydraulic pressure obstacle avoidance system is provided with overflow valve 16, the oil inlet of overflow valve 16 and first unidirectional
Valve 4 is connected, and the oil-out of overflow valve 16 is connected with fuel tank 17；Pressure is provided with the rodless cavity of hoist cylinder 9 and propelling cylinder 12
Relay 13；Pressure meter switch 11 and pressure gauge 10 are provided with the rodless cavity of hoist cylinder 9 and propelling cylinder 12.Other parts with
Embodiment 1 is identical.
The present invention operation principle be：
When flowing snow scraper runs into barrier, when system pressure reaches the setting of pressure switch 13, electric signal, three are sent
Position four-way electromagnetic reversing valve I 15 and three-position four-way electromagnetic directional valve II 5 commutate, three-position four-way electromagnetic directional valve I 15 and three four
The left position of electric change valve II 5 works, and hydraulic oil enters the rodless cavity of propelling cylinder 12 and the rod chamber of hoist cylinder 9, lifting
Oil cylinder 9 and the collective effect of propelling cylinder 12 lifting flowing snow scraper, to hide strong barrier；When extreme higher position is arrived in the lifting of hoist cylinder 9
During place, when the pressure at the rodless cavity of hoist cylinder 9 reaches the setting of pressure switch 13, electric signal, three are sent again
Four-way electromagnetic reversing valve I 15 and three-position four-way electromagnetic directional valve II 5 commutate, three-position four-way electromagnetic directional valve I 15 and 3-position 4-way
The right position of solenoid directional control valve II 5 works, and hydraulic oil enters the rod chamber of propelling cylinder 12 and the rodless cavity of hoist cylinder 9, lifting oil
Cylinder 9 and propelling cylinder 12 decline, and reenter shovel snow work.Choke valve 7 plays a part of to adjust decrease speed, and flow is most during work
Greatly.
Claims (6)
1. a kind of snow-clearing car hydraulic pressure obstacle avoidance system, including hydraulic pump (2), motor (3) and the first check valve (4), hydraulic pump (2) with
Motor (3) is connected, and the oil inlet of hydraulic pump (2) is connected with fuel tank (17), the oil-out and the first check valve (4) of hydraulic pump (2)
Oil inlet connection, it is characterised in that：The oil-out of first check valve (4) respectively with three-position four-way electromagnetic directional valve I (15)
Hydraulic fluid port P and three-position four-way electromagnetic directional valve II (5) hydraulic fluid port P connections, the hydraulic fluid port A of three-position four-way electromagnetic directional valve I (15) pass through
Second check valve (8) and flow divider (14) are connected with the rodless cavity of propelling cylinder (12), three-position four-way electromagnetic directional valve I (15)
Hydraulic fluid port B is connected with the rod chamber of propelling cylinder (12)；The hydraulic fluid port A of three-position four-way electromagnetic directional valve II (5) by balanced valve (6),
Second check valve (8) and flow divider (14) are connected with the rod chamber of hoist cylinder (9), three-position four-way electromagnetic directional valve II (5)
Hydraulic fluid port B is connected with the rodless cavity of hoist cylinder (9).
2. snow-clearing car hydraulic pressure obstacle avoidance system according to claim 1, it is characterised in that：The snow-clearing car hydraulic pressure obstacle avoidance system
Provided with choke valve (7), the oil inlet of the choke valve (7) is connected with the rodless cavity of hoist cylinder (9), choke valve (7) it is fuel-displaced
Mouth is connected with the hydraulic fluid port B of three-position four-way electromagnetic directional valve II (5).
3. snow-clearing car hydraulic pressure obstacle avoidance system according to claim 2, it is characterised in that：The snow-clearing car hydraulic pressure obstacle avoidance system
Provided with oil filter (1), the oil inlet of oil filter (1) is connected with fuel tank (17), and oil-out and the hydraulic pump (2) of oil filter (1) connect
Connect.
4. snow-clearing car hydraulic pressure obstacle avoidance system according to claim 3, it is characterised in that：The snow-clearing car hydraulic pressure obstacle avoidance system
Provided with overflow valve (16), the oil inlet of overflow valve (16) is connected with the first check valve (4), the oil-out and fuel tank of overflow valve (16)
(17) connect.
5. snow-clearing car hydraulic pressure obstacle avoidance system according to claim 4, it is characterised in that：Hoist cylinder (9) and propelling cylinder
(12) pressure switch (13) is provided with rodless cavity.
6. snow-clearing car hydraulic pressure obstacle avoidance system according to claim 5, it is characterised in that：Hoist cylinder (9) and propelling cylinder
(12) pressure meter switch (11) and pressure gauge (10) are provided with rodless cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710691895.1A CN107255104A (en) | 2017-08-11 | 2017-08-11 | Snow-clearing car hydraulic pressure obstacle avoidance system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710691895.1A CN107255104A (en) | 2017-08-11 | 2017-08-11 | Snow-clearing car hydraulic pressure obstacle avoidance system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107255104A true CN107255104A (en) | 2017-10-17 |
Family
ID=60026828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710691895.1A Withdrawn CN107255104A (en) | 2017-08-11 | 2017-08-11 | Snow-clearing car hydraulic pressure obstacle avoidance system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107255104A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488105A (en) * | 2018-04-13 | 2018-09-04 | 徐州工程学院 | Hydraulic system, avoidance structure and barrier-avoiding method suitable for flowing snow scraper avoidance structure |
| CN112339781A (en) * | 2020-11-13 | 2021-02-09 | 合肥工业大学 | Lifting wheel device for assisting starting and climbing of locomotive |
-
2017
- 2017-08-11 CN CN201710691895.1A patent/CN107255104A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108488105A (en) * | 2018-04-13 | 2018-09-04 | 徐州工程学院 | Hydraulic system, avoidance structure and barrier-avoiding method suitable for flowing snow scraper avoidance structure |
| CN112339781A (en) * | 2020-11-13 | 2021-02-09 | 合肥工业大学 | Lifting wheel device for assisting starting and climbing of locomotive |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171017 |