CN106321536A - Self-walking shears-fork type high-altitude operation platform walking hydraulic system - Google Patents
Self-walking shears-fork type high-altitude operation platform walking hydraulic system Download PDFInfo
- Publication number
- CN106321536A CN106321536A CN201610977480.6A CN201610977480A CN106321536A CN 106321536 A CN106321536 A CN 106321536A CN 201610977480 A CN201610977480 A CN 201610977480A CN 106321536 A CN106321536 A CN 106321536A
- Authority
- CN
- China
- Prior art keywords
- running motor
- way valve
- walking
- side running
- valve
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
Abstract
The invention discloses a self-walking shears-fork type high-altitude operation platform walking hydraulic system which comprises a three-position four-way valve, a two-position four-way valve, a left walking motor, a right walking motor and a hydraulic oil tank. Four oil ports at the middle position of the three-position four-way valve are mutually communicated, an oil inlet circuit and an oil return circuit at the other two positions of the three-position four-way valve are mutually switched, and the left walking motor and the right walking motor are connected in parallel by the left position of the two-position four-way valve. The self-walking shears-fork type high-altitude operation platform walking hydraulic system has the advantages that the problem of air suction abnormal sound generated in turning during walking of a self-walking shears-fork type high-altitude operation platform can be solved, the service life of the walking motors can be effectively prolonged, and operation stability of the self-walking shears-fork type high-altitude operation platform is improved.
Description
Technical field
The present invention relates to a kind of hydraulic system, particularly to a kind of walking hydraulic pressure from scissor aerial work platform of walking
System, belongs to technical field of engineering machinery.
Background technology
From walking scissor aerial work platform be a kind of for by personnel and instrument thereof and material lift to work high above the ground
Place, and realize the machinery from walking by vibration hydraulic system.This vibration hydraulic system typically by pump, solenoid directional control valve A,
Solenoid directional control valve B, two motor compositions.The rotating being controlled motor by solenoid directional control valve A is commutated, it is achieved aerial work platform
Advance, retrogressing.The connection in series-parallel being controlled motor by solenoid directional control valve B realizes two motor parallel connection low speed walkings, series high-speed
Walking.Realized by deflecting roller deflection certain angle from turning to of walking scissor aerial work platform.
When two running motor series connection of walking scissor aerial work platform, due to the flow phase of two running motors
With, therefore the rotating speed of wheel is also identical, and this ensures that thering can straight line moving from walking scissor aerial work platform.
But in the case of motor series connection from walking scissor aerial work platform needs to turn when, it is desirable to the line of the deflecting roller of both sides
Speed differs, therefore vehicle turn time inside deflecting roller can produce skidding, cause deflecting roller to wear and tear, and can produce
The emptying phenomenon of raw pipeline, motor has abnormal sound.
When two running motor parallel connections of walking scissor aerial work platform, due to the pressure phase of two running motors
With, but the change of pressure derives from adhesive force when vehicle travels.When straight line moving, when both sides adhesive force does not waits, system
Force value is relevant with maximum adhesive force, causes the trend of the running motor stream of the side that the oriented adhesive force of flow is low, but turns
To wheel non deflected certain angle, the side running motor that therefore adhesive force is low can bear the impact of pressure, even produces and beats
Sliding phenomenon.
Summary of the invention
The shortcoming that the present invention exists to overcome above-mentioned prior art proposes, and it aims to provide one and can solve the problem that motor
It is emptied the walking scissor aerial work platform vibration hydraulic system certainly of abnormal sound and tyre slip wear problem.
Technical scheme: a kind of from walking scissor aerial work platform vibration hydraulic system, including three-position four-way valve, two
Cross valve, left side running motor, right side running motor and hydraulic oil container；Four, the middle position of described three-position four-way valve hydraulic fluid port interconnects mutually
Logical, oil-feed and the oil return circuit of other two are mutually exchanged；The left position of described two-position four-way valve makes left side running motor and right side
Running motor is in parallel, and right position makes left side running motor and the series connection of right side running motor；During two running motor series connection, intrasystem
High-voltage oil liquid sequentially passes through three-position four-way valve, left side running motor, two position four-way valves, right side running motor, the most again through three
Position four-way valve returns to hydraulic oil container；When two running motor parallel connections and the left position of three-position four-way valve, intrasystem high-voltage oil liquid warp
Two strands of fluid it are divided into respectively through two position four-way valves and left side running motor, through the oil of two position four-way valves after crossing three-position four-way valve
Liquid returns to hydraulic oil container again after the running motor of right side again after three-position four-way valve；Fluid through left side running motor depends on
Secondary after two-position four-way valve and three-position four-way valve, return to hydraulic oil container；Two running motor parallel connections and the right position of three-position four-way valve
Time, intrasystem high-voltage oil liquid is divided into two strands of fluid respectively through two position four-way valves and right side walking horse after three-position four-way valve
Reaching, the fluid through two position four-way valves returns to hydraulic oil container again through left side running motor again after three-position four-way valve, passes through
The fluid of right side running motor returns to hydraulic oil container after sequentially passing through two-position four-way valve and three-position four-way valve.The present invention can basis
The series-parallel system being switched fast running motor of working condition, uses series system, turns or climb when straight line is quickly walked
Parallel way is used during slope.Three-position four-way valve is in middle position as when parking, it is to avoid owing to inertia causes being emptied of running motor
Abnormal sound situation.
Preference, in order to avoid when walking scissor aerial work platform series connection is turned, running motor is emptied generation abnormal sound
Problem, the oil circuit between described left side running motor and right side running motor be provided with and hydraulic oil container conducting unidirectional repairing
Valve, described unidirectional Fill valve deviates from the oil circuit direction conducting of hydraulic oil container.During turning left, owing to left side running motor turns
Speed is slow, and right side running motor rotating speed is fast, and the most unidirectional Fill valve is opened under atmospheric pressure, and running motor is carried out to the right
Repairing, overcomes that right side running motor is too high due to rotating speed and the emptying phenomenon that causes.In like manner, when right-hand bend process, unidirectional
Fill valve running motor repairing to the left.
Preference, it is emptied problem in order to avoid producing when stopping, in parallel between described three-position four-way valve and two position four-way valves
Having two-way oil compensation valve, described two-way oil compensation valve to include two check valves, between two check valves, oil circuit is provided with and hydraulic oil container
The pipeline of connection, the mutual departing direction of said two check valve turns on.Due to inertia, vehicle still can move ahead or slow astern segment distance
Just stop.Aerial work platform this segment distance move during left and right sides running motor occur being emptied time, two-way benefit
Fuel tap is opened under atmospheric pressure, to the left and right running motor fuel feeding, it is ensured that left and right sides running motor is internal is full of oil
Liquid, the problem eliminating motor abnormal sound.
Beneficial effect: the present invention can solve the problem that the suction produced of turning in walking scissor aerial work platform walking process
The problem of empty abnormal sound, it is possible to be effectively improved the service life of running motor, improves the behaviour from scissor aerial work platform of walking
Make stability.
Accompanying drawing explanation
Fig. 1 is the hydraulic schematic diagram of first embodiment of the invention；
Fig. 2 is the hydraulic schematic diagram of second embodiment of the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is described in further detail.
First embodiment
As it is shown in figure 1, it is a kind of from walking scissor aerial work platform vibration hydraulic system, including three-position four-way valve 1, two four
Logical valve 2, left side running motor 3, right side running motor 4 and hydraulic oil container 5；Four, the middle position of described three-position four-way valve 1 hydraulic fluid port phase
Intercommunicated, oil-feed and the oil return circuit of other two are mutually exchanged；The described right position of two-position four-way valve 2 makes left side running motor 3 He
Right side running motor 4 is connected；During two running motor series connection, intrasystem high-voltage oil liquid sequentially passes through three-position four-way valve 1, left side
Running motor 3, two position four-way valve 2, right side running motor 4, return to hydraulic oil container 5 through three-position four-way valve 1 the most again.A described left side
Oil circuit between side running motor 3 and right side running motor 4 is provided with and the unidirectional Fill valve 6 of hydraulic oil container 5 conducting, described unidirectional
Fill valve 6 deviates from the oil circuit direction conducting of hydraulic oil container 5.During turning left, owing to left side running motor 3 rotating speed is slow, right
Side running motor 4 rotating speed is fast, and the most unidirectional Fill valve 6 is opened under atmospheric pressure, and running motor 4 is mended to the right
Oil, overcomes that right side running motor 4 is too high due to rotating speed and the emptying phenomenon that causes.In like manner, when right-hand bend process, unidirectional benefit
Fuel tap 6 running motor 3 repairing to the left.Avoid running motor when walking scissor aerial work platform series connection is turned to be emptied
The generation of abnormal sound problem.
Being parallel with two-way oil compensation valve 7 between described three-position four-way valve 1 and two position four-way valves 2, described two-way oil compensation valve 7 includes
Two check valves 71, between two check valves 71, oil circuit is provided with the pipeline connected with hydraulic oil container 5, said two check valve 71
Mutually departing direction conducting.Due to inertia, vehicle still can move ahead or slow astern segment distance just stops.Aerial work platform exists
When during the motion of this segment distance, being emptied occurs in left and right sides running motor, two-way oil compensation valve 7 is opened under atmospheric pressure,
Running motor fuel feeding to the left and right, it is ensured that left and right sides running motor is internal is full of fluid, the problem eliminating motor abnormal sound.
Embodiment two
As in figure 2 it is shown, it is a kind of from walking scissor aerial work platform vibration hydraulic system, including three-position four-way valve 1, two four
Logical valve 2, left side running motor 3, right side running motor 4 and hydraulic oil container 5；Four, the middle position of described three-position four-way valve 1 hydraulic fluid port phase
Intercommunicated, oil-feed and the oil return circuit of other two are mutually exchanged；The described right position of two-position four-way valve 2 makes left side running motor 3 He
Right side running motor 4 is connected；When two running motor parallel connections and three-position four-way valve 1 left, intrasystem high-voltage oil liquid passes through
Two strands of fluid it are divided into respectively through two position four-way valves 2 and left side running motor 3, through two position four-way valves 2 after three-position four-way valve 1
Fluid returns to hydraulic oil container 5 again after right side running motor 4 again after three-position four-way valve 1；Through left side running motor 3
Fluid returns to hydraulic oil container 5 after sequentially passing through two-position four-way valve 2 and three-position four-way valve 1；Two running motors are in parallel and three
During cross valve 1 right, intrasystem high-voltage oil liquid is divided into two strands of fluid respectively through two position four-way valves after three-position four-way valve 1
2 and right side running motor 4, through two position four-way valves 2 fluid again through left side running motor 3 again after three-position four-way valve 1
Return to hydraulic oil container 5, after the fluid of right side running motor 4 sequentially passes through two-position four-way valve 2 and three-position four-way valve 1, return to liquid
Force feed case 5.During two running motor parallel connections, it is possible to achieve the power output of low rotation speed large torque is conducive to the climbing of vehicle.
When running motor parallel connection is turned, the flow needed for running motor is relevant with the speed of turning, but input is total
Flow is certain, so can be because assignment of traffic problem still can produce emptying phenomenon.Described left side running motor 3 and right side
Oil circuit between running motor 4 is provided with and the unidirectional Fill valve 6 of hydraulic oil container 5 conducting, and described unidirectional Fill valve 6 deviates from hydraulic oil
The oil circuit direction conducting of case 5.It is parallel with two-way oil compensation valve 7 between described three-position four-way valve 1 and two position four-way valves 2, described two-way
Fill valve 7 includes two check valves 71, and between two check valves 71, oil circuit is provided with the pipeline connected with hydraulic oil container 5, described
Two check valve 71 mutual departing direction conductings.
Although the present invention is described in detail the most in conjunction with the embodiments, but described those skilled in the art's energy
Enough understand, on the premise of without departing from present inventive concept, it is also possible to above-described embodiment is changed or change etc., such as connecting plate
Cross section and the change of hole shape, flexible axle and the change etc. of connecting plate connecting mode, be still within the scope of the present invention.
Claims (3)
1. from a walking scissor aerial work platform vibration hydraulic system, including three-position four-way valve (1), two position four-way valves
(2), left side running motor (3), right side running motor (4) and hydraulic oil container (5)；It is characterized in that: described three-position four-way valve (1)
Four, middle position hydraulic fluid port be interconnected, oil-feed and the oil return circuit of other two are mutually exchanged；A left side for described two-position four-way valve (2)
Position makes left side running motor (3) and right side running motor (4) in parallel, and right position makes left side running motor (3) and right side running motor
(4) series connection；During two running motor series connection, intrasystem high-voltage oil liquid sequentially passes through three-position four-way valve (1), left side running motor
(3), two position four-way valves (2), right side running motor (4), return to hydraulic oil container (5) through three-position four-way valve (1) the most again；Two
When running motor parallel connection and three-position four-way valve (1) left position, intrasystem high-voltage oil liquid is divided into two after three-position four-way valve (1)
Stock fluid passes through the right side again respectively through two position four-way valves (2) and left side running motor (3), the fluid through two position four-way valves (2)
After three-position four-way valve (1), hydraulic oil container (5) is returned to again after side running motor (4)；Fluid through left side running motor (3)
Hydraulic oil container (5) is returned to after sequentially passing through two-position four-way valve (2) and three-position four-way valve (1)；Two running motor parallel connections and three
During position four-way valve (1) right position, intrasystem high-voltage oil liquid is divided into two strands of fluid respectively through two after three-position four-way valve (1)
Cross valve (2) and right side running motor (4), the fluid through two position four-way valves (2) passes through through left side running motor (3) more again
Returning to hydraulic oil container (5) after three-position four-way valve (1), the fluid through right side running motor (4) sequentially passes through two-position four-way valve (2)
With return to hydraulic oil container (5) after three-position four-way valve (1).
It is the most according to claim 1 from walking scissor aerial work platform vibration hydraulic system, it is characterised in that: described
Oil circuit between left side running motor (3) and right side running motor (4) is provided with the unidirectional Fill valve turned on hydraulic oil container (5)
(6), described unidirectional Fill valve (6) deviates from the oil circuit direction conducting of hydraulic oil container (5).
It is the most according to claim 1 and 2 from walking scissor aerial work platform vibration hydraulic system, it is characterised in that:
Being parallel with two-way oil compensation valve (7) between described three-position four-way valve (1) and two position four-way valves (2), described two-way oil compensation valve (7) includes
Two check valves (71), between two check valves (71), oil circuit is provided with the pipeline connected with hydraulic oil container (5), said two list
To valve (71) mutually departing direction conducting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610977480.6A CN106321536A (en) | 2016-11-08 | 2016-11-08 | Self-walking shears-fork type high-altitude operation platform walking hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610977480.6A CN106321536A (en) | 2016-11-08 | 2016-11-08 | Self-walking shears-fork type high-altitude operation platform walking hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106321536A true CN106321536A (en) | 2017-01-11 |
Family
ID=57816404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610977480.6A Pending CN106321536A (en) | 2016-11-08 | 2016-11-08 | Self-walking shears-fork type high-altitude operation platform walking hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106321536A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306978A (en) * | 2018-12-07 | 2019-02-05 | 湖南十开科技有限公司 | Hydraulic moving control unit and hydraulic travel system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202628638U (en) * | 2012-05-14 | 2012-12-26 | 深圳市钻通工程机械股份有限公司 | Supply return circuit |
| CN104613040A (en) * | 2015-02-06 | 2015-05-13 | 郑州宇通重工有限公司 | Series-parallel connection oil supplementary valve of motor rotating system |
| CN104929999A (en) * | 2015-06-29 | 2015-09-23 | 宁波精垦液压有限公司 | Full-hydraulic driving control system |
| CN204778616U (en) * | 2015-05-12 | 2015-11-18 | 深圳市桑特液压技术有限公司 | Power control unit that fork turned to walking noise is cut in elimination |
| CN105402178A (en) * | 2015-12-30 | 2016-03-16 | 中国铁建重工集团有限公司 | Closed type hydraulic system and vehicle comprising same |
-
2016
- 2016-11-08 CN CN201610977480.6A patent/CN106321536A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202628638U (en) * | 2012-05-14 | 2012-12-26 | 深圳市钻通工程机械股份有限公司 | Supply return circuit |
| CN104613040A (en) * | 2015-02-06 | 2015-05-13 | 郑州宇通重工有限公司 | Series-parallel connection oil supplementary valve of motor rotating system |
| CN204778616U (en) * | 2015-05-12 | 2015-11-18 | 深圳市桑特液压技术有限公司 | Power control unit that fork turned to walking noise is cut in elimination |
| CN104929999A (en) * | 2015-06-29 | 2015-09-23 | 宁波精垦液压有限公司 | Full-hydraulic driving control system |
| CN105402178A (en) * | 2015-12-30 | 2016-03-16 | 中国铁建重工集团有限公司 | Closed type hydraulic system and vehicle comprising same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109306978A (en) * | 2018-12-07 | 2019-02-05 | 湖南十开科技有限公司 | Hydraulic moving control unit and hydraulic travel system |
| CN109306978B (en) * | 2018-12-07 | 2023-12-08 | 湖南十开科技有限公司 | Hydraulic walking control unit and hydraulic walking system |
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| PB01 | Publication | ||
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Application publication date: 20170111 |