CN201864543U - Leg interlocking device for upper part of overhead vehicle - Google Patents
Leg interlocking device for upper part of overhead vehicle Download PDFInfo
- Publication number
- CN201864543U CN201864543U CN2010206263811U CN201020626381U CN201864543U CN 201864543 U CN201864543 U CN 201864543U CN 2010206263811 U CN2010206263811 U CN 2010206263811U CN 201020626381 U CN201020626381 U CN 201020626381U CN 201864543 U CN201864543 U CN 201864543U
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- CN
- China
- Prior art keywords
- supporting leg
- leg
- valve
- inductance approach
- circuit
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a leg interlocking device for an upper part of an overhead vehicle, which comprises four legs, wherein the surface of each leg is provided with an inductance approach switch, the four inductance approach switches are connected in series, a leg interlocking valve is connected on a series circuit of the inductance approach circuit, the leg interlocking valve is connected with a hydraulic oil way through a leg signal valve, and the circuit is connected with an adaptive power supply. The inductance approach switches are fixed on the surfaces of the four legs and connected with the leg interlocking valve in series. When one of the four legs does not extend out, the approach switch fixed on the surface of the leg is in a disconnected state, and the leg interlocking valve does not work, therefore, the upper part can not be operated so as to achieve the purpose of preventing misoperation. The leg interlocking device is simple in structure and high in practicality.
Description
Technical field
The utility model relates to a kind of aerial platform, relates in particular to dress supporting leg interlock on a kind of high empty wagons.
Background technology
Because aerial platform is mannedly to carry out operation to the high-altitude, so require whole vehicle stability to get well, the stability of last dress is guaranteed by hydraulic ram.If stretch out supporting leg vehicle is not supported steadily, just carry out aloft work, may cause the run-off the straight of car load center of gravity, may cause Peril Incidents such as overturning.
Summary of the invention
At the deficiency that prior art exists, technical problem to be solved in the utility model is, a kind of high empty wagons safety device is provided, and solves vehicle and do not support the problem that steadily may cause roll-over accident with regard to carrying out aloft work.
For solving the problems of the technologies described above, technical solution adopted in the utility model is: dress supporting leg interlock on a kind of high empty wagons, comprise four supporting legs, described supporting leg surface is equiped with an inductance approach switch respectively, described four inductance approach switches series connection, connect the supporting leg interlock valve on the circuit series of inductance approach switch, the supporting leg interlock valve is connected with hydraulic circuit by the supporting leg signal valve, and described circuit is connected with adaptive power supply.
Dress supporting leg interlock on the above-mentioned high empty wagons, described adaptive power supply comprises voltage transformer and and voltage transformer bonded assembly external source.
The advantage of dress supporting leg interlock is on the high empty wagons of the utility model: inductance approach switch is fixed on four supporting leg surfaces, then four is cascaded near switch and supporting leg interlock valve.When four supporting legs had one not stretch out, what be fixed on the supporting leg surface was in open circuited state near switch, and the supporting leg interlock valve is in off position, thereby can't operate dress, reaches the purpose that prevents maloperation with this, and this apparatus structure is simple, and is practical.
Description of drawings
Fig. 1 is the hydraulic structure scheme drawing of dress supporting leg interlock on the high empty wagons of the utility model;
Fig. 2 is a circuit theory sketch of the present utility model.
The specific embodiment
Below in conjunction with drawings and the specific embodiments the utility model is described in further details;
As shown in Figure 1, be the hydraulic structure scheme drawing of dress supporting leg interlock on the high empty wagons of the utility model, Fig. 2 is a circuit theory sketch of the present utility model.Dress supporting leg interlock on a kind of high empty wagons, comprise four supporting legs, described supporting leg surface is equiped with an inductance approach switch 1 respectively, described four inductance approach switches, 1 series connection, on the circuit series 2 of inductance approach switch 1, connect supporting leg interlock valve 3, supporting leg interlock valve 3 is connected with hydraulic circuit 5 by supporting leg signal valve 4, and described circuit is connected with adaptive power supply.This adaptive power supply comprises voltage transformer 6 and and voltage transformer 6 bonded assembly external sources 7.Wherein inductance approach switch 1 is prior art general-duty electric elements, so seldom lay down a definition.
Working process of the present utility model is:
As shown in Figure 1, 2, when aloft work, after connecting power take-off valve, change the rated voltage of inductance approach switch 1 into through voltage transformer 6 from 24v external source 7 electric currents of PLC power supply, (supporting leg stretches out near switch closure after the 1 whole closures of inductance approach switch among the figure, supporting leg does not stretch out near switch and disconnects), electric current arrives the magnet coil of supporting leg interlock valve 3, after the magnet coil energising, supporting leg interlock valve 3 closures, hydraulic efficiency pressure system begins to give last dress fuel feeding through hydraulic circuit 5, and last dress begins action.
Certainly, above-mentioned explanation is not to be to restriction of the present utility model, and the utility model also is not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present utility model, the variation of making, remodeling, interpolation or replacement all should belong to protection domain of the present utility model.
Claims (2)
1. adorn the supporting leg interlock on a high empty wagons, comprise four supporting legs, it is characterized in that: described supporting leg surface is equiped with an inductance approach switch respectively, described four inductance approach switches series connection, on the circuit series of inductance approach switch, connect the supporting leg interlock valve, the supporting leg interlock valve is connected with hydraulic circuit by the supporting leg signal valve, and described circuit is connected with adaptive power supply.
2. dress supporting leg interlock on the high empty wagons according to claim 1, it is characterized in that: described adaptive power supply comprises voltage transformer and and voltage transformer bonded assembly external source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206263811U CN201864543U (en) | 2010-11-26 | 2010-11-26 | Leg interlocking device for upper part of overhead vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206263811U CN201864543U (en) | 2010-11-26 | 2010-11-26 | Leg interlocking device for upper part of overhead vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201864543U true CN201864543U (en) | 2011-06-15 |
Family
ID=44135705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206263811U Expired - Fee Related CN201864543U (en) | 2010-11-26 | 2010-11-26 | Leg interlocking device for upper part of overhead vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201864543U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103523672A (en) * | 2013-09-29 | 2014-01-22 | 天津山河装备开发有限公司 | Crane lower-structure supporting leg lock device and method for controlling supporting legs by using the device |
-
2010
- 2010-11-26 CN CN2010206263811U patent/CN201864543U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103523672A (en) * | 2013-09-29 | 2014-01-22 | 天津山河装备开发有限公司 | Crane lower-structure supporting leg lock device and method for controlling supporting legs by using the device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20151126 |