CN203922532U - A kind of lorry-mounted crane Anti-overturning protection device - Google Patents
A kind of lorry-mounted crane Anti-overturning protection device Download PDFInfo
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- CN203922532U CN203922532U CN201420327632.4U CN201420327632U CN203922532U CN 203922532 U CN203922532 U CN 203922532U CN 201420327632 U CN201420327632 U CN 201420327632U CN 203922532 U CN203922532 U CN 203922532U
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- lorry
- mounted crane
- supporting leg
- fixed supporting
- protection device
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Abstract
The utility model relates to a kind of lorry-mounted crane Anti-overturning protection device; lorry-mounted crane comprises vertical leg, movable supporting legs and fixed supporting leg; it is characterized in that: gap change detecting device is arranged on the front end of fixed supporting leg; gap change detecting device changes the gap between the fixed supporting leg detecting and movable supporting legs to convert the signal of controlling unloader valve and alarming device open and close to, and whether instruction lorry-mounted crane stops lift heavy.This device can before tumbling appears in car body, can stop in advance lorry-mounted crane dangerous direction lift heavy operation and send alerting signal, operator can be adopted an effective measure avoids car body to tumble, reduce operator's labour intensity and the dependence to operating experience, improved safety performance.
Description
Technical field
The utility model relates to the fender guard on a kind of lorry-mounted crane, particularly a kind of lorry-mounted crane Anti-inclining fender guard.
Background technology
Current domestic lorry-mounted crane major part has moment restriction function, as adopt limiter of moment, but limiter of moment only can be realized the overload damage that prevents loop wheel machine oil cylinder and framing member, cannot solve the anti-tipping problem of lorry-mounted crane, thereby cannot provide the anti-tipping defencive function of lorry-mounted crane, and in practical operation, avoiding and prevent method that lorry-mounted crane is tumbled is only, while mainly relying on self experience of lorry-mounted crane operator and lift heavy, the observation of the liftoff situation of loop wheel machine supporting leg is avoided to tumbling of vehicle, and the method is subject to the impact of lorry-mounted crane operator individual factor very large, can not be very exactly, scientifically, control reliably, but lorry-mounted crane is tumbled, the severity of injuries that causes is very high, for this reason, need badly and develop a kind of lorry-mounted crane Anti-inclining fender guard.
Utility model content
In order to solve above-mentioned technical matters of the prior art, the utility model provides a kind of lorry-mounted crane Anti-inclining fender guard, and this device can carry out early warning and failure-free motion limits exactly before generation overthrow accident.
The utility model has adopted following technical scheme:
A kind of lorry-mounted crane Anti-inclining fender guard, lorry-mounted crane comprises vertical leg, movable supporting legs and fixed supporting leg, it is characterized in that: gap change detecting device is arranged on the front end of fixed supporting leg, gap change detecting device changes the gap between the fixed supporting leg detecting and movable supporting legs to convert the signal of controlling unloader valve and alarming device open and close to, and whether instruction lorry-mounted crane stops lift heavy;
Further, described gap change detecting device is closed type approach switch;
Further, described gap change detecting device is position transduser;
By the energising of relay or controller control unloader valve and alarming device whether further, described gap changes and converts the break-make of corresponding voltage signal to and be transferred to relay or controller.
Further, described unloader valve is unloading electromagnetic valve.
The beneficial effects of the utility model are:
(1), when lorry-mounted crane carries out lift heavy operation, generally all horizontal support legs will be stretched out, and vertical leg supports to ground.Once tilting of car body is to certain angle, the vertical leg of car body one side just can built on stilts.Vertical leg is from supporting the state conversion process of the built on stilts that falls down to the ground, must cause that the gap between movable supporting legs and fixed supporting leg changes, lorry-mounted crane Anti-inclining fender guard described in the utility model has utilized the movable supporting legs in hoisting crane run-off the straight process and the gap between fixed supporting leg to change dexterously, set it as the signal that transmits hoisting crane run-off the straight, can react accurately and timely the generation of tilt phenomenon, for lorry-mounted crane Anti-inclining provides accurately, scientifically protection;
(2) lorry-mounted crane Anti-inclining fender guard described in the utility model changes the gap between movable supporting legs and fixed supporting leg to convert the signal of controlling unloading electromagnetic valve and alarming device switch to, thereby avoids tumbling of car body that failure-free protection is provided;
(3) adopt lorry-mounted crane Anti-inclining fender guard described in the utility model; when lorry-mounted crane carries out lift heavy operation; before tumbling appears in car body, can stop in advance lorry-mounted crane dangerous direction lift heavy operation and send alerting signal; operator can be adopted an effective measure avoids car body to tumble; reduce operator's labour intensity and the dependence to operating experience, improved safety performance.
Brief description of the drawings
Fig. 1 is the hardware layout figure of lorry-mounted crane Anti-inclining fender guard.
Fig. 2 is that approach switch is installed and tilting procedure schematic diagram.
Fig. 3 is the anti-tipping electrical schematic diagram of relay.
Fig. 4 is the anti-tipping electrical schematic diagram of controller.
In figure: 1, vertical leg; 2, movable supporting legs; 3, fixed supporting leg; 4, closed type approach switch; 5, relay; 5 ', controller; 6, unloading electromagnetic valve; 7, alarming device.
Detailed description of the invention
Lorry-mounted crane Anti-inclining fender guard of the present utility model designs based on following thought: when lorry-mounted crane carries out lift heavy operation, generally all horizontal support legs will be stretched out, and vertical leg supports to ground.Once tilting of car body is to certain angle, the vertical leg of car body one side just can built on stilts.Vertical leg, from supporting the state conversion process of the built on stilts that falls down to the ground, must cause that the gap between movable supporting legs and fixed supporting leg changes.Detect that this gap changes, and just can predict tumbling of car body in advance.
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, anti-vertical leg, movable supporting legs and the fixed supporting leg of comprising of lorry-mounted crane, closed type approach switch is arranged on the front end of fixed supporting leg, closed type approach switch changes the gap between fixed supporting leg and movable supporting legs to convert the break-make of corresponding voltage signal to and be transferred to relay or controller, obtained by relay or controller control unloading electromagnetic valve and alarming device whether electric, thereby avoid tumbling of car body.
In order to facilitate the description of the utility model embodiment, spy is reduced to the approach switch shown in Fig. 2 by Fig. 1 and installs and tilting procedure schematic diagram, and taking left side supporting leg as example, right side supporting leg situation is identical with it.In Fig. 2, right figure is the working condition schematic diagram that lorry-mounted crane normally supports to ground, now movable supporting legs is due to the support of vertical leg, movable supporting legs and fixed supporting leg increase in the gap of fixed supporting leg front end, closed type approach switch can't detect movable supporting legs, to relay or controller output high level signal, relay or controller drive unloading electromagnetic valve work, lorry-mounted crane normal operation.Once tumbling to the right appears in lorry-mounted crane in lift heavy process, left side supporting leg is liftoff, working condition is now as shown in left side schematic diagram in Fig. 2, movable supporting legs is because deadweight is sagging, and movable supporting legs and fixed supporting leg reduce in the gap of fixed supporting leg front end, and closed type approach switch detects movable supporting legs, to relay or controller output low level signal, relay or controller cut off unloading electromagnetic valve, and drive alarming device to send alarm signal, and lorry-mounted crane stops lift heavy.
Fig. 3 has provided the anti-tipping electrical principle of relay, (suggestion increases control principle explanation).
Fig. 4 has provided the anti-tipping electrical principle of controller, (suggestion increases control principle explanation).
In addition, check whether the parts that in brief description of the drawings, Reference numeral is indicated conform to accompanying drawing.
It is evident that above description and to record be only for example instead of in order to limit the disclosed content of the utility model, application or use.Although described in an embodiment and described with reference to the accompanying drawings embodiment, but the utility model does not limit by accompanying drawing example and the optimal mode thought at present of conduct of describing in an embodiment to implement the specific examples of instruction of the present utility model, scope of the present utility model will comprise any embodiment that falls into specification sheets above and appended claim.
Claims (5)
1. a lorry-mounted crane Anti-overturning protection device; lorry-mounted crane comprises vertical leg, movable supporting legs and fixed supporting leg; it is characterized in that: gap change detecting device is arranged on the front end of fixed supporting leg; gap change detecting device changes the gap between the fixed supporting leg detecting and movable supporting legs to convert the signal of controlling unloader valve and alarming device open and close to, and whether instruction lorry-mounted crane stops lift heavy.
2. a kind of lorry-mounted crane Anti-overturning protection device as claimed in claim 1, is characterized in that: described gap change detecting device is closed type approach switch.
3. a kind of lorry-mounted crane Anti-overturning protection device as claimed in claim 1, is characterized in that: described gap change detecting device is position transduser.
4. a kind of lorry-mounted crane Anti-overturning protection device as claimed in claim 1; it is characterized in that: described gap changes and converts the break-make of corresponding voltage signal to and be transferred to relay or controller, by the energising of relay or controller control unloader valve and alarming device whether.
5. a kind of lorry-mounted crane Anti-overturning protection device as claimed in claim 4, is characterized in that: described unloader valve is unloading electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420327632.4U CN203922532U (en) | 2014-06-18 | 2014-06-18 | A kind of lorry-mounted crane Anti-overturning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420327632.4U CN203922532U (en) | 2014-06-18 | 2014-06-18 | A kind of lorry-mounted crane Anti-overturning protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203922532U true CN203922532U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420327632.4U Active CN203922532U (en) | 2014-06-18 | 2014-06-18 | A kind of lorry-mounted crane Anti-overturning protection device |
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| CN (1) | CN203922532U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3812338A1 (en) * | 2019-10-22 | 2021-04-28 | Cargotec Patenter AB | Lorry and method for regulating the maximum allowed lifting moment of a hydraulic lorry crane |
-
2014
- 2014-06-18 CN CN201420327632.4U patent/CN203922532U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3812338A1 (en) * | 2019-10-22 | 2021-04-28 | Cargotec Patenter AB | Lorry and method for regulating the maximum allowed lifting moment of a hydraulic lorry crane |
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| C14 | Grant of patent or utility model | ||
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