CN106006501B - Hoistable platform and its hydraulic lifting system - Google Patents
Hoistable platform and its hydraulic lifting system Download PDFInfo
- Publication number
- CN106006501B CN106006501B CN201610642388.4A CN201610642388A CN106006501B CN 106006501 B CN106006501 B CN 106006501B CN 201610642388 A CN201610642388 A CN 201610642388A CN 106006501 B CN106006501 B CN 106006501B
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- China
- Prior art keywords
- damping
- valve
- fuel tank
- elevating
- rodless cavity
- 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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- 230000003028 elevating effect Effects 0.000 claims abstract description 55
- 238000013016 damping Methods 0.000 claims abstract description 48
- 239000002828 fuel tank Substances 0.000 claims abstract description 35
- 239000003921 oil Substances 0.000 claims abstract description 17
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 2
- 230000007423 decrease Effects 0.000 abstract description 26
- 230000035939 shock Effects 0.000 abstract description 8
- 230000005484 gravity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of hydraulic lifting systems of hoistable platform, including two elevating rams setting up and down, two elevating rams are vertically arranged and piston rod can stretch out upwards, the rodless cavity of two elevating rams is connected to oil pump, rod chamber is connected to fuel tank, it further include two damping adjustment devices for respectively corresponding two elevating rams, the rodless cavity of each elevating ram passes through the corresponding damping adjustment device connection fuel tank, the damping adjustment device can control the rodless cavity of the corresponding elevating ram and the on off operating mode of fuel tank, and the damping value that hydraulic oil is flowed from the rodless cavity of the corresponding elevating ram to fuel tank can be adjusted.Adjustment damping value as needed, control hydraulic oil flow back to the speed of fuel tank, and then adjust decrease speed, reduce decrease speed, prevent hydraulic shock and the shock of structural member, improve stability and safety.The invention also discloses a kind of hoistable platforms including above-mentioned hydraulic lifting system.
Description
Technical field
The present invention relates to hoistable platform fields, more particularly to a kind of hydraulic lifting system of hoistable platform.In addition, this hair
It is bright to further relate to a kind of hoistable platform including above-mentioned hydraulic lifting system.
Background technique
Hoistable platform is widely used in multiple fields, generally comprises chassis, workbench and hydraulic lifting system, passes through
The lifting of the flexible realization workbench of hydraulic cylinder in hydraulic lifting system, to achieve the purpose that high altitude operation, in order to ensure
The stability of product protects staff's life security, and workbench design standard is required when the position for reaching secondary decline, under
Reduction of speed degree must halve.During workbench decline, 10%-15% also in total kilometres but it is not less than 3.5 meters, decline is answered
Stop, operator must be again started up decline function, and the maximum speed of decline is preferably the 50% of normal speed.Lifting is flat at present
Platform relies primarily on gravity decline, i.e., by gravity by the hydraulic oil pressure oil return box in elevating ram rodless cavity, under reaching secondary
When the position of drop, decrease speed cannot be adjusted, under cannot reaching the 50% of normal speed.It opens decline and falls into place
When there are the shock of apparent hydraulic shock and structural member, stability and safety are poor.
Therefore, how providing one kind and capable of adjusting the hydraulic lifting system of decrease speed is that those skilled in the art need at present
Technical problems to be solved.
Summary of the invention
The object of the present invention is to provide a kind of hydraulic lifting systems of hoistable platform, can adjust decrease speed.The present invention
Another object be to provide a kind of hoistable platform including above-mentioned hydraulic lifting system, can adjust decrease speed, improve safety
Property and stability.
In order to solve the above technical problems, the present invention provides a kind of hydraulic lifting system of hoistable platform, including setting up and down
Two elevating rams, two elevating rams are vertically arranged and piston rod can stretch out upwards, two liftings oil
The rodless cavity of cylinder is connected to oil pump, and rod chamber is connected to fuel tank, further includes two resistances for respectively corresponding two elevating rams
Buddhist nun's regulating device, the rodless cavity of each elevating ram passes through the corresponding damping adjustment device connection fuel tank, described
Damping adjustment device can control the rodless cavity of the corresponding elevating ram and the on off operating mode of fuel tank, and can adjust hydraulic
The damping value that oil is flowed from the rodless cavity of the corresponding elevating ram to fuel tank.
Preferably, the damping adjustment device is specially solenoid-operated proportional reversal valve.
Preferably, the solenoid-operated proportional reversal valve is specially bi-bit bi-pass solenoid-operated proportional reversal valve, the bi-bit bi-pass electricity
Two actuator ports of magnetic proportional reversing valve are respectively communicated with the rodless cavity and fuel tank of the elevating ram.
Preferably, the damping adjustment device includes the hand-operated direction valve being sequentially communicated, damping reversal valve and orifice valve.
Preferably, the hand-operated direction valve is specially bi-bit bi-pass hand-operated direction valve, and the damping reversal valve is specially two
Position two-way damps reversal valve, and the rodless cavity of the elevating ram is connected to a working oil of the bi-bit bi-pass hand-operated direction valve
Mouthful, another actuator port of the bi-bit bi-pass hand-operated direction valve is connected to a job of the bi-bit bi-pass damping reversal valve
Another actuator port of hydraulic fluid port, the bi-bit bi-pass damping reversal valve is connected to an actuator port of the orifice valve, described
Another actuator port of orifice valve is connected to fuel tank.
Preferably, the bi-bit bi-pass damping reversal valve is removably installed in valve plate.
Preferably, the check valve for preventing hydraulic oil from flowing back is provided between the elevating ram and oil pump.
It is preferably located at below the elevating ram of lower section and is provided with overweight sensor.
The present invention also provides a kind of hoistable platforms, the hydraulic lifting system including workbench and the connection workbench
System, the hydraulic lifting system is specially hydraulic lifting system described in above-mentioned any one.
Preferably, the hoistable platform is specially scissor-type lifting platform.
Hydraulic elevating platform provided by the invention, including two elevating rams setting up and down, two elevating rams are perpendicular
Directly it is arranged and piston rod can stretches out upwards, the rodless cavity of two elevating rams is connected to oil pump, and rod chamber is connected to fuel tank, also
Two damping adjustment devices including respectively corresponding two elevating rams, the rodless cavity of each elevating ram pass through corresponding resistance
Buddhist nun's regulating device is connected to fuel tank, and damping adjustment device can control the rodless cavity of corresponding elevating ram and the on-off shape of fuel tank
State, and the damping value that hydraulic oil is flowed from the rodless cavity of corresponding elevating ram to fuel tank can be adjusted.When elevating ram stretches out,
Damping adjustment device disconnects the connection of rodless cavity and fuel tank, and when elevating ram retracts, damping adjustment device is connected to rodless cavity and oil
Case, while damping value is adjusted as needed, control hydraulic oil flows back to the speed of fuel tank, and then adjusts decrease speed, reduces decline
Speed prevents hydraulic shock and the shock of structural member, improves stability and safety.
The present invention also provides a kind of hoistable platforms including above-mentioned hydraulic lifting system, since above-mentioned hydraulic lifting system has
There is above-mentioned technical effect, above-mentioned hoistable platform should also have same technical effect, no longer be discussed in detail herein.
Detailed description of the invention
Fig. 1 is a kind of hydraulic schematic diagram of specific embodiment of hydraulic lifting system provided by the present invention；
Fig. 2 is the hydraulic schematic diagram of another specific embodiment of hydraulic lifting system provided by the present invention.
Specific embodiment
Core of the invention is to provide a kind of hydraulic lifting system of hoistable platform, can adjust decrease speed.The present invention
Another core be to provide a kind of hoistable platform including above-mentioned hydraulic lifting system, can adjust decrease speed, improve safety
Property and stability.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
The hydraulic lifting system that the specific embodiment of the invention provides, including two elevating rams 1 setting up and down, two
Elevating ram 1 is vertically arranged and piston rod can stretch out upwards, and the rodless cavity of two elevating rams 1 is connected to oil pump, there is bar
Chamber is connected to fuel tank, further includes two damping adjustment devices for respectively corresponding two elevating rams 1, the nothing of each elevating ram 1
Rod cavity passes through corresponding damping adjustment device connection fuel tank, and damping adjustment device can control the nothing of corresponding elevating ram 1
The on off operating mode of rod cavity and fuel tank, and the resistance that hydraulic oil is flowed from the rodless cavity of corresponding elevating ram 1 to fuel tank can be adjusted
Buddhist nun's value.
When elevating ram 1 stretches out, damping adjustment device disconnects the connection of rodless cavity and fuel tank, when elevating ram 1 retracts, resistance
Buddhist nun's regulating device is connected to rodless cavity and fuel tank, while adjusting damping value as needed, and control hydraulic oil flows back to the speed of fuel tank, into
And decrease speed is adjusted, decrease speed is reduced, hydraulic shock and the shock of structural member are prevented, improves stability and safety.
Specifically, the check valve for preventing hydraulic oil from flowing back can be provided between elevating ram 1 and oil pump.And it is in place
The lower section of the elevating ram 1 of lower section is provided with overweight sensor 6.The components such as other also settable check valve, that is, overflow valves are realized
The stable operation of hydraulic system, it is within the scope of the present invention.
Wherein, damping adjustment device can be solenoid-operated proportional reversal valve, specially bi-bit bi-pass solenoid-operated proportional reversal valve 2,
Referring to FIG. 1, Fig. 1 is a kind of hydraulic schematic diagram of specific embodiment of hydraulic lifting system provided by the present invention.
Two actuator ports of bi-bit bi-pass solenoid-operated proportional reversal valve 2 are respectively communicated with the rodless cavity and fuel tank of elevating ram 1.
When elevating ram 1 stretches out, bi-bit bi-pass solenoid-operated proportional reversal valve 2 is in a working position, and hydraulic oil cannot be by no bar at this time
Chamber flows to fuel tank；When elevating ram 1 retract when, bi-bit bi-pass solenoid-operated proportional reversal valve 2 is in another working position, at this time its two
A working position connection, under the effect of gravity, hydraulic oil flows to fuel tank via bi-bit bi-pass solenoid-operated proportional reversal valve 2 by rodless cavity,
Simultaneously as needed, controller provides suitable electric current to bi-bit bi-pass solenoid-operated proportional reversal valve 2, and the unlatching of control valve core is big
It is small, change the damping of running of hydraulic power oil, to control the speed of decline.The speed of decline is determining according to the position of handle, ratio
It is adjustable, when workbench drops to the position of secondary pause, trigger travel switch, controller exports lower electric current, and two two
The opening of energization magnetic proportional reversing valve 2 reduces, and when achieving the purpose that speed halves, and normally declining, increases opening.
Damping adjustment device may also comprise the hand-operated direction valve being sequentially communicated, damping reversal valve and orifice valve 5, wherein manually
Reversal valve can either be controlled by electric signal, also manually controllable, and specifically, hand-operated direction valve is bi-bit bi-pass hand-operated direction valve
3, damping reversal valve is that bi-bit bi-pass damps reversal valve 4, referring to FIG. 2, Fig. 2 is hydraulic lifting system provided by the present invention
Another hydraulic schematic diagram of specific embodiment.
One actuator port of the rodless cavity connection bi-bit bi-pass hand-operated direction valve 3 of elevating ram 1, bi-bit bi-pass change manually
To an actuator port of another actuator port of valve 3 connection bi-bit bi-pass damping reversal valve 4, bi-bit bi-pass damps reversal valve
One actuator port of 4 another actuator port connection orifice valve 5, another actuator port of orifice valve 5 are connected to fuel tank.
When elevating ram 1 stretches out, bi-bit bi-pass hand-operated direction valve 3 is in a working position, and hydraulic oil cannot be by this time
Rodless cavity flows to fuel tank；When elevating ram 1 retract when, bi-bit bi-pass hand-operated direction valve 3 is in another working position, at this time its two
A working position connection, under the effect of gravity, hydraulic oil is by rodless cavity successively via bi-bit bi-pass hand-operated direction valve 3, bi-bit bi-pass
Damping reversal valve 4 is that orifice valve 5 flows to fuel tank.Wherein a working position of bi-bit bi-pass damping reversal valve 4 is two working oils
Mouth normally, working position when normally to decline, another working position pass through damping for two actuator ports and are connected, and are secondary
Working position when decline.When workbench normally declines, bi-bit bi-pass hand-operated direction valve 3 obtains electric, bi-bit bi-pass damping commutation
Valve 4 must not be electric, and platform declines automatically by gravity, and decrease speed is determined by orifice valve 5.When controller detects under workbench
The position of secondary pause is dropped to, bi-bit bi-pass hand-operated direction valve 3 and bi-bit bi-pass damping reversal valve 4 are electricly common, platform decline
Speed is codetermined by bi-bit bi-pass hand-operated direction valve 3, bi-bit bi-pass damping reversal valve 4 and orifice valve 5, by reasonably selecting
Bi-bit bi-pass damps reversal valve 4, achievees the purpose that decrease speed halves.The replacement of reversal valve 4 is damped for the ease of bi-bit bi-pass,
Applicability is improved, valve plate is removably installed in.
In addition to above-mentioned hydraulic lifting system, it includes above-mentioned hydraulic lifting system that a specific embodiment of the invention, which also provides a kind of,
The hoistable platform of system, refer to the prior art for the structure of other each sections of the hoistable platform, and repeats no more herein.
Specifically, above-mentioned hoistable platform can be scissor-type lifting platform.
Hoistable platform provided by the present invention and its hydraulic lifting system are described in detail above.It is used herein
A specific example illustrates the principle and implementation of the invention, and the above embodiments are only used to help understand
Method and its core concept of the invention.It should be pointed out that for those skilled in the art, not departing from this
, can be with several improvements and modifications are made to the present invention under the premise of inventive principle, these improvement and modification also fall into the present invention
In scope of protection of the claims.
Claims (6)
1. a kind of hydraulic lifting system of hoistable platform, including two elevating rams (1) setting up and down, two lifting oil
Cylinder (1) is vertically arranged and piston rod can stretch out upwards, and the rodless cavity of two elevating rams (1) is connected to oil pump, is had
Rod cavity is connected to fuel tank, which is characterized in that further includes the two dampings adjusting dress for respectively corresponding two elevating rams (1)
It sets, the rodless cavity of each elevating ram (1) passes through the corresponding damping adjustment device connection fuel tank, and the damping is adjusted
Regulating device can control the rodless cavity of the corresponding elevating ram (1) and the on off operating mode of fuel tank, and can adjust hydraulic oil
The damping value flowed from the rodless cavity of the corresponding elevating ram (1) to fuel tank；The damping adjustment device includes successively connecting
Logical hand-operated direction valve, damping reversal valve and orifice valve (5)；
The hand-operated direction valve is specially bi-bit bi-pass hand-operated direction valve (3), and the damping reversal valve is specially bi-bit bi-pass resistance
Buddhist nun's reversal valve (4), the rodless cavity of the elevating ram (1) are connected to a working oil of the bi-bit bi-pass hand-operated direction valve (3)
Mouthful, described two two another actuator port for leading to reversal valve manually are connected to one of bi-bit bi-pass damping reversal valve (4)
Actuator port, another actuator port of bi-bit bi-pass damping reversal valve (4) are connected to a job of the orifice valve (5)
Another actuator port of hydraulic fluid port, the orifice valve (5) is connected to fuel tank.
2. hydraulic lifting system according to claim 1, which is characterized in that bi-bit bi-pass damping reversal valve (4) can
Releasably it is installed on valve plate.
3. hydraulic lifting system according to any one of claims 1 or 2, which is characterized in that the elevating ram (1) and
The check valve for preventing hydraulic oil from flowing back is provided between oil pump.
4. hydraulic lifting system according to claim 3, which is characterized in that the underlying elevating ram (1)
Lower section is provided with overweight sensor (6).
5. a kind of hoistable platform, the hydraulic lifting system including workbench and the connection workbench, which is characterized in that
The hydraulic lifting system is specially hydraulic lifting system described in Claims 1-4 any one.
6. hoistable platform according to claim 5, which is characterized in that the hoistable platform is specially that scissors type elevating is flat
Platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610642388.4A CN106006501B (en) | 2016-08-08 | 2016-08-08 | Hoistable platform and its hydraulic lifting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610642388.4A CN106006501B (en) | 2016-08-08 | 2016-08-08 | Hoistable platform and its hydraulic lifting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106006501A CN106006501A (en) | 2016-10-12 |
| CN106006501B true CN106006501B (en) | 2019-04-02 |
Family
ID=57135308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610642388.4A Active CN106006501B (en) | 2016-08-08 | 2016-08-08 | Hoistable platform and its hydraulic lifting system |
Country Status (1)
| Country | Link |
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| CN (1) | CN106006501B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3858737B2 (en) * | 2002-03-18 | 2006-12-20 | コベルコクレーン株式会社 | Cylinder speed control device |
| JP4920354B2 (en) * | 2006-09-06 | 2012-04-18 | 日本輸送機株式会社 | lift device |
| CN201301205Y (en) * | 2008-08-05 | 2009-09-02 | 浙江诺力机械股份有限公司 | Control loop for descending of fork of industrial vehicle |
| AU2012217996B2 (en) * | 2011-02-16 | 2016-08-04 | Crown Equipment Corporation | Materials handling vehicle estimating a speed of a movable assembly from a lift motor speed |
| CN103112804B (en) * | 2013-02-05 | 2015-10-28 | 浙江诺力机械股份有限公司 | A kind of control setup of industrial vehicle lifting mechanism and control method |
| CN103438037B (en) * | 2013-08-06 | 2016-03-23 | 湖南星邦重工有限公司 | A kind of scissors type altitude job platform lifting and down maneuver hydraulic system |
| CN205855938U (en) * | 2016-08-08 | 2017-01-04 | 湖南星邦重工有限公司 | Hoistable platform and hydraulic lifting system thereof |
-
2016
- 2016-08-08 CN CN201610642388.4A patent/CN106006501B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106006501A (en) | 2016-10-12 |
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| CP01 | Change in the name or title of a patent holder |
Address after: 410600, 128, Jinzhou Avenue East, Jinzhou new district, Changsha, Hunan, Ningxiang Patentee after: Hunan Xingbang Intelligent Equipment Co.,Ltd. Address before: 410600, 128, Jinzhou Avenue East, Jinzhou new district, Changsha, Hunan, Ningxiang Patentee before: HUNAN SINOBOOM HEAVY INDUSTRY Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Lifting platform and its hydraulic lifting system Effective date of registration: 20220112 Granted publication date: 20190402 Pledgee: Agricultural Bank of China Limited Ningxiang sub branch Pledgor: Hunan Xingbang Intelligent Equipment Co.,Ltd. Registration number: Y2022430000002 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231110 Granted publication date: 20190402 Pledgee: Agricultural Bank of China Limited Ningxiang sub branch Pledgor: Hunan Xingbang Intelligent Equipment Co.,Ltd. Registration number: Y2022430000002 |