CN219013037U - Automatic leveling system of lifting platform - Google Patents
Automatic leveling system of lifting platform Download PDFInfo
- Publication number
- CN219013037U CN219013037U CN202223212266.1U CN202223212266U CN219013037U CN 219013037 U CN219013037 U CN 219013037U CN 202223212266 U CN202223212266 U CN 202223212266U CN 219013037 U CN219013037 U CN 219013037U
- Authority
- CN
- China
- Prior art keywords
- supporting leg
- valve
- oil cylinder
- oil
- base
- 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.)
- Active
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
An automatic leveling system of a lifting platform comprises a base (1); a left front supporting leg (2), a right front supporting leg (3), a left rear supporting leg (4) and a right rear supporting leg (5), wherein the first ends of the left front supporting leg, the right front supporting leg, the left rear supporting leg and the right rear supporting leg are respectively hinged with the base (1); the hydraulic control system comprises a first oil cylinder (6) with two ends respectively hinged to a base (1) and a left front supporting leg (2), a second oil cylinder (7) with two ends respectively hinged to the base (1) and a right front supporting leg (3), a third oil cylinder (8) with two ends respectively hinged to the base (1) and a left rear supporting leg (4), a fourth oil cylinder (9) with two ends respectively hinged to the base (1) and the right rear supporting leg (5), and a hydraulic control system. According to the technical scheme provided by the utility model, the automatic leveling of the lifting platform can be realized, the overhead is not easy to pass when the lifting platform is leveled, repeated adjustment for many times is avoided, the leveling speed is high, and the precision is high.
Description
Technical Field
The utility model relates to the technical field of lifting platforms, in particular to an automatic leveling system of a lifting platform.
Background
Lifting platforms have been popular in all corners of social life and are increasingly widely used, regardless of the construction, civil engineering and people's daily lives, without the need for lifting machinery. The related products of the lifting platform are as follows: scissor type lifting platforms, trailer type lifting platforms, crank arm type lifting platforms, straight arm type lifting platforms, aluminum alloy lifting platforms, sleeve cylinder type lifting platforms, spider type lifting platforms and the like.
Due to uneven mass distribution of the articles or uneven ground of the use environment, uneven stress of the lifting platform base can be caused, the lifting platform base cannot be in a horizontal state, and stability and safety of the lifting platform can be reduced.
Leveling of the existing lifting platform, wherein a lifting platform base horizontal state adjusting mechanism consists of a base; the first end of the left front supporting leg, the right front supporting leg, the left rear supporting leg and the right rear supporting leg are respectively hinged with the base; a first oil cylinder with two ends respectively hinged with the base and the left front supporting leg, a second oil cylinder with two ends respectively hinged with the base and the right front supporting leg, a third oil cylinder with two ends respectively hinged with the base and the left rear supporting leg, and a fourth oil cylinder with two ends respectively hinged with the base and the right rear supporting leg; and a hydraulic control system. In the process of leveling the base of the lifting platform, the expansion and contraction of the oil cylinder is controlled through manual operation, the base is leveled through adjusting the heights of the supporting legs, the adjusting speed is low, and the precision is poor.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model provides an automatic leveling system of a lifting platform, which can realize the automatic leveling of a lifting platform base, and has the advantages of high leveling speed and higher precision.
In order to solve the technical problems, the utility model provides an automatic leveling system of a lifting platform, which comprises a base; the first end of the left front supporting leg, the right front supporting leg, the left rear supporting leg and the right rear supporting leg are respectively hinged with the base; a first oil cylinder with two ends respectively hinged with the base and the left front supporting leg, a second oil cylinder with two ends respectively hinged with the base and the right front supporting leg, a third oil cylinder with two ends respectively hinged with the base and the left rear supporting leg, a fourth oil cylinder with two ends respectively hinged with the base and the right rear supporting leg, and a hydraulic control system; the hydraulic control system comprises a hydraulic oil tank, a hydraulic pump, a load sensitive valve and a four-way electromagnetic valve, wherein an oil inlet of the hydraulic pump is communicated with the hydraulic oil tank, and the oil inlet of the load sensitive valve is communicated with an oil outlet of the hydraulic pump; the rod cavity and the rodless cavity of the first oil cylinder are respectively communicated with two working oil ports of a first valve of the four-way electromagnetic valve, the rod cavity and the rodless cavity of the second oil cylinder are respectively communicated with two working oil ports of a second valve of the four-way electromagnetic valve, the rod cavity and the rodless cavity of the third oil cylinder are respectively communicated with two working oil ports of a third valve of the four-way electromagnetic valve, and the rod cavity and the rodless cavity of the fourth oil cylinder are respectively communicated with two working oil ports of a fourth valve of the four-way electromagnetic valve; the hydraulic control system further comprises a first shuttle valve, two oil inlets of which are respectively communicated with the rodless cavity of the first oil cylinder and the rodless cavity of the second oil cylinder, a second shuttle valve, two oil inlets of which are respectively communicated with the rodless cavity of the third oil cylinder and the rodless cavity of the fourth oil cylinder, a third shuttle valve, two oil inlets of which are respectively communicated with the working port of the first shuttle valve and the working port of the second shuttle valve, a pressure relay, a base of which is connected with the pressure relay, an inclination angle sensor, a load sensitive valve, an inclination angle sensor, a pressure relay, a first valve of a four-way electromagnetic valve, a second valve of a four-way electromagnetic valve and a controller of which the third valve and the fourth valve are electrically connected.
According to the technical scheme provided by the utility model, the automatic leveling of the lifting platform can be realized, the overhead is not easy to pass when the lifting platform is leveled, repeated adjustment for many times is avoided, the leveling speed is high, and the precision is high.
Drawings
The accompanying drawings are included to provide a further understanding of the utility model, and are not to be construed as limiting the utility model in any way. In the drawings:
FIG. 1 is a schematic top view of an embodiment of an automatic leveling system for a lift platform;
fig. 2 is a schematic structural diagram of a hydraulic control system of an automatic leveling system of an elevating platform according to an embodiment.
Detailed Description
Embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.
The automatic leveling system of the lifting platform shown in fig. 1 comprises a base 1; a left front supporting leg 2, a right front supporting leg 3, a left rear supporting leg 4 and a right rear supporting leg 5, wherein the first ends of the left front supporting leg 2, the right front supporting leg 3, the left rear supporting leg 4 and the right rear supporting leg 5 are respectively hinged with the base 1; a first oil cylinder 6 with two ends respectively hinged with the base 1 and the left front supporting leg 2, a second oil cylinder 7 with two ends respectively hinged with the base 1 and the right front supporting leg 3, a third oil cylinder 8 with two ends respectively hinged with the base 1 and the left rear supporting leg 4, and a fourth oil cylinder 9 with two ends respectively hinged with the base 1 and the right rear supporting leg 5; and a hydraulic control system. As shown in fig. 2, the hydraulic control system comprises a hydraulic oil tank 10, a hydraulic pump 11 with an oil inlet communicated with the hydraulic oil tank 10, a load sensitive valve 12 with an oil inlet communicated with an oil outlet of the hydraulic pump 11, and a four-way electromagnetic valve 13 with an oil inlet communicated with a working oil port of the load sensitive valve 12; the rod cavity and the rodless cavity of the first oil cylinder 6 are respectively communicated with two working oil ports of a first valve 14 of the four-way electromagnetic valve 13, the rod cavity and the rodless cavity of the second oil cylinder 7 are respectively communicated with two working oil ports of a second valve 15 of the four-way electromagnetic valve 13, the rod cavity and the rodless cavity of the third oil cylinder 8 are respectively communicated with two working oil ports of a third valve 16 of the four-way electromagnetic valve 13, and the rod cavity and the rodless cavity of the fourth oil cylinder 9 are respectively communicated with two working oil ports of a fourth valve 17 of the four-way electromagnetic valve 13; the hydraulic control system further comprises a first shuttle valve 18, two oil inlets of which are respectively communicated with the rodless cavity of the first oil cylinder 6 and the rodless cavity of the second oil cylinder 7, a second shuttle valve 19, two oil inlets of which are respectively communicated with the rodless cavity of the third oil cylinder 8 and the rodless cavity of the fourth oil cylinder 9, a third shuttle valve 20, two oil inlets of which are respectively communicated with the working ports of the first shuttle valve 18 and the working port of the second shuttle valve 19, a pressure relay 21, which is communicated with the working port of the third shuttle valve 20, a tilt angle sensor (not shown in the figure) which is connected with the base 1 and is used for detecting the tilt direction of the base 1, and a controller (not shown in the figure) which is electrically connected with the load sensitive valve 12, the tilt angle sensor, the pressure relay 21, the first valve 14, the second valve 15, the third valve 16 and the fourth valve 17 of the four-way electromagnetic valve 13, for example, and a PLC controller is adopted.
Working principle: one end of the left front supporting leg 2, the right front supporting leg 3, the left rear supporting leg 4 and the right rear supporting leg 5 are hinged with the base 1, the other end of the left front supporting leg 2 can move on the ground, the other end of the left front supporting leg 2 is driven to move inwards when the first oil cylinder 6 stretches out, the left front part of the base 1 is lifted, the other end of the left front supporting leg 2 is driven to move outwards when the first oil cylinder 6 contracts, and the left front part of the base 1 is lowered; when the second oil cylinder 7 stretches out, the other end of the right front supporting leg 3 is driven to move inwards to raise the right front part of the base 1, and when the second oil cylinder 7 contracts, the other end of the right front supporting leg 3 is driven to move outwards to lower the right front part of the base 1; when the third oil cylinder 8 stretches out, the other end of the left rear supporting leg 4 is driven to move inwards to raise the left rear part of the base 1, and when the third oil cylinder 8 contracts, the other end of the left rear supporting leg 4 is driven to move outwards to lower the left rear part of the base 1; when the fourth oil cylinder 9 stretches out, the other end of the right rear supporting leg 5 is driven to move inwards to raise the right rear part of the base 1, and when the fourth oil cylinder 9 contracts, the other end of the right rear supporting leg 5 is driven to move outwards to lower the right rear part of the base 1. Therefore, the inclination of the base 1 can be adjusted by extending and contracting the first cylinder 6, the second cylinder 7, the third cylinder 8, and the fourth cylinder 9.
When the lifting platform is automatically leveled, in an initial state, the first oil cylinder 6, the second oil cylinder 7, the third oil cylinder 8 and the fourth oil cylinder 9 are all in a fully retracted state, the left front supporting leg 2, the right front supporting leg 3, the left rear supporting leg 4 and the right rear supporting leg 5 of the lifting platform are all separated from the ground (the lifting platform can be supported by movable rollers), automatic leveling is started at the moment, the controller gives the maximum power supply current to the load sensitive valve 12, the load sensitive valve 12 is fully opened at the moment, and all flow of the hydraulic pump 11 enters into the P port of the four-way electromagnetic valve 13. The controller controls the first valve 14, the second valve 15, the third valve 16 and the fourth valve 17 of the four-way solenoid valve 13 to be fully electrified while supplying power to the load sensitive valve 12, and at the same time, the first oil cylinder 6, the second oil cylinder 7, the third oil cylinder 8 and the fourth oil cylinder 9 extend out simultaneously, and the left front leg 2, the right front leg 3, the left rear leg 4 and the right rear leg 5 are gradually grounded.
The first oil cylinder 6, the second oil cylinder 7, the third oil cylinder 8 and the fourth oil cylinder 9 extend at the same or different speeds, when any one of the left front supporting leg 2, the right front supporting leg 3, the left rear supporting leg 4 and the right rear supporting leg 5 touches the ground, the corresponding oil cylinder bears pressure, due to the increase of resistance, the oil cylinder can stop extending and wait for the other oil cylinders to extend continuously, when the left front supporting leg 2, the right front supporting leg 3, the left rear supporting leg 4 and the right rear supporting leg 5 touch the ground, the hydraulic pressure of the system can be increased instantaneously, and no matter which supporting leg acts first after the ground touches, the pressure relay 21 is switched on by the first shuttle valve 18, the second shuttle valve 19 and the third shuttle valve 20.
The pressure relay 21 sends a signal to the controller, after the controller receives the signal, the controller firstly controls to reduce the power supply current of the load sensitive valve 12, so that the load sensitive valve 12 supplies the oil with medium flow to the four-way electromagnetic valve 13, then the controller controls to start sending a wheel movement signal, the first valve 14, the second valve 15, the third valve 16 and the fourth valve 17 of the four-way electromagnetic valve 13 are controlled to alternately obtain electricity, the wheel movement time can be adjusted by setting in the controller, after the wheel movement, the lifting platform is supported by the left front supporting leg 2, the right front supporting leg 3, the left rear supporting leg 4 and the right rear supporting leg 5, and other parts are all separated from the ground.
After the wheel movement is completed, the controller controls to continue to reduce the supply current to the load sensitive valve 12. The load sensitive valve 12 is used for supplying small-flow oil to the P port of the four-way electromagnetic valve 13, each valve of the four-way electromagnetic valve 13 corresponds to the first oil cylinder 6, the second oil cylinder 7, the third oil cylinder 8 and the fourth oil cylinder 9 respectively, and at the moment, the controller can gradually and closed-loop control one of the first valve 14, the second valve 15, the third valve 16 and the fourth valve 17 of the four-way electromagnetic valve 13 according to signals fed back by the inclination sensor, so that the leveling purpose is achieved. Because the load sensitive valve 12 only supplies small flow of oil during leveling, the leveling is not easy to overstep, and the leveling precision is high.
According to the technical scheme provided by the utility model, the automatic leveling of the lifting platform can be realized, the overhead is not easy to pass when the lifting platform is leveled, repeated adjustment for many times is avoided, the leveling speed is high, and the precision is high.
It is apparent that the present utility model is not limited to the above preferred embodiments, but various changes and modifications can be made within the spirit of the present utility model as defined in the claims and specification, which can solve the same technical problems and achieve the intended technical effects, and thus is not repeated. All modifications which may occur to those skilled in the art from the present disclosure are intended to be included within the scope of the utility model as defined in the appended claims.
Claims (1)
1. An automatic leveling system of a lifting platform comprises a base (1); a left front supporting leg (2), a right front supporting leg (3), a left rear supporting leg (4) and a right rear supporting leg (5), wherein the first ends of the left front supporting leg, the right front supporting leg, the left rear supporting leg and the right rear supporting leg are respectively hinged with the base (1); a first oil cylinder (6) with two ends respectively hinged with the base (1) and the left front supporting leg (2), a second oil cylinder (7) with two ends respectively hinged with the base (1) and the right front supporting leg (3), a third oil cylinder (8) with two ends respectively hinged with the base (1) and the left rear supporting leg (4), and a fourth oil cylinder (9) with two ends respectively hinged with the base (1) and the right rear supporting leg (5); the hydraulic control system is characterized by further comprising a hydraulic control system; the hydraulic control system comprises a hydraulic oil tank (10), a hydraulic pump (11) with an oil inlet communicated with the hydraulic oil tank (10), a load sensitive valve (12) with an oil inlet communicated with an oil outlet of the hydraulic pump (11), and a four-way electromagnetic valve (13) with an oil inlet communicated with a working oil port of the load sensitive valve (12); the rod cavity and the rodless cavity of the first oil cylinder (6) are respectively communicated with two working oil ports of a first sheet valve (14) of the four-way electromagnetic valve (13), the rod cavity and the rodless cavity of the second oil cylinder (7) are respectively communicated with two working oil ports of a second valve (15) of the four-way electromagnetic valve (13), the rod cavity and the rodless cavity of the third oil cylinder (8) are respectively communicated with two working oil ports of a third valve (16) of the four-way electromagnetic valve (13), and the rod cavity and the rodless cavity of the fourth oil cylinder (9) are respectively communicated with two working oil ports of a fourth valve (17) of the four-way electromagnetic valve (13); the hydraulic control system further comprises a first shuttle valve (18) with two oil inlets respectively communicated with the rodless cavity of the first oil cylinder (6) and the rodless cavity of the second oil cylinder (7), a second shuttle valve (19) with two oil inlets respectively communicated with the rodless cavity of the third oil cylinder (8) and the rodless cavity of the fourth oil cylinder (9), a third shuttle valve (20) with two oil inlets respectively communicated with the working port of the first shuttle valve (18) and the working port of the second shuttle valve (19), a pressure relay (21) communicated with the working port of the third shuttle valve (20), and a controller connected with the base (1) and used for detecting the inclination angle sensor of the base (1), and electrically connected with the load sensitive valve (12), the inclination angle sensor, the pressure relay (21), the first sheet valve (14) of the four-connected electromagnetic valve (13), the second valve (15), the third valve (16) and the fourth valve (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223212266.1U CN219013037U (en) | 2022-11-30 | 2022-11-30 | Automatic leveling system of lifting platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223212266.1U CN219013037U (en) | 2022-11-30 | 2022-11-30 | Automatic leveling system of lifting platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219013037U true CN219013037U (en) | 2023-05-12 |
Family
ID=86252541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223212266.1U Active CN219013037U (en) | 2022-11-30 | 2022-11-30 | Automatic leveling system of lifting platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219013037U (en) |
-
2022
- 2022-11-30 CN CN202223212266.1U patent/CN219013037U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2010180973A (en) | Method and device for synchronizing plurality of cylinders | |
| CN110002381B (en) | Crank arm aerial working vehicle connector leveling hydraulic system and control method | |
| CN103342121A (en) | Oil field drilling machine, supporting leg leveling system thereof and supporting leg leveling method | |
| CN111943099A (en) | Energy-saving hydraulic system | |
| CN207061745U (en) | A kind of hydraulic power unit of three-dimensional adjusting machine | |
| CN219013037U (en) | Automatic leveling system of lifting platform | |
| JP5856403B2 (en) | Mobile crane component lifting device | |
| CN112173980B (en) | Anti-backward-tilting control method and system for lifting mechanical equipment and lifting mechanical equipment | |
| CN102730608B (en) | There is the ground handling trolley of crane | |
| CN210290330U (en) | Vehicle-mounted automatic leveling system | |
| CN217418133U (en) | Crank arm type aerial work platform | |
| JP3683066B2 (en) | Hydraulic jack synchronous drive device | |
| CN115467869A (en) | Large-scale derrick deviation rectifying multipoint synchronous electro-hydraulic control system based on variable frequency speed regulation-high speed switch | |
| CN212532225U (en) | Energy-saving hydraulic system | |
| CN218971527U (en) | Hydraulic control system and working machine | |
| CN204999558U (en) | Quick lifting devices of portable frame | |
| CN108689332B (en) | Method for leveling top plate of lifter | |
| CN219197762U (en) | Dynamic hydraulic constant-top lifting force system and robot landing leg | |
| CN109665452A (en) | Control system, crane and control method | |
| CN217233949U (en) | Bottom adjusting jack and bottom lifting jack combined liquid supply system for hydraulic support | |
| CN221296021U (en) | Hydraulic control system of comprehensive bullet hanging vehicle | |
| CN221343666U (en) | Supporting leg deficiency leg detection device | |
| CN219827309U (en) | Chassis leveling device | |
| CN210799587U (en) | Automatic control hydraulic lifting energy feedback collecting device | |
| CN205099265U (en) | Movable type machine of lifting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |