CN202245854U - Engineering equipment with support leg, and device for detecting full-extending state of support leg - Google Patents
Engineering equipment with support leg, and device for detecting full-extending state of support leg Download PDFInfo
- Publication number
- CN202245854U CN202245854U CN2010205770772U CN201020577077U CN202245854U CN 202245854 U CN202245854 U CN 202245854U CN 2010205770772 U CN2010205770772 U CN 2010205770772U CN 201020577077 U CN201020577077 U CN 201020577077U CN 202245854 U CN202245854 U CN 202245854U
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- supporting leg
- support leg
- backguy
- entirely
- detection switch
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Abstract
The utility model discloses engineering equipment with a support leg, and a device for detecting the full-extending state of the support leg. The support leg comprises a fixed support leg box, and at least one movable support leg box; the device for detecting the full-extending state of the support leg comprises a stay wire travel detection switch which is arranged on the fixed support leg box of the support leg, and a controller; a stay wire of the stay wire travel detection switch is fixed on the last section of the movable support leg box when the support leg is in the full-extending state; a normally closed switch contact is arranged in the stay wire travel detection switch, and is disconnected when the stay wire reaches the travel of the stay wire, which corresponds to that in the full-extending state of the support leg; and the controller judges whether the support leg is extended fully according to the level magnitude of a pin which is electrically connected with the stay wire travel detection switch. The device for detecting the full-extending state of the support leg can directly detect the end-position state, namely the full-extending state of the support leg boxes, filter out the uncertain disturbance in a dynamic random process, has the characteristics of low cost, high portability, and convenience in overhauling and the like and is easy to control, and is particularly suitable for the full-extending detection of multiple stages of support legs in a single-oil-cylinder mode.
Description
Technical field
The utility model relates to the engineering equipment that car hosit etc. has support leg, relates in particular to supporting leg and stretches condition checkout gear entirely.
Background technology
At present; Car hosit is increasing owing to not stretching the roll-over accident that support leg causes entirely, and the staff that the behavior of carrying reaches vehicle periphery for operating personal itself that hangs of this violation has brought huge life, property safety hidden danger, this operation behavior; Major part is owing to thin the causing of operator safety consciousness; Therefore, it is necessary on supporting leg, increasing flexible detecting device, the alerting signal that provides through detecting device; Enforceable rupturing operation personnel's dangerous play can reach relevant safe in operation purpose.
For the design of the hoisting crane of different brands two joint supporting leg casees, stretch mode difference is also bigger, adds rope row mode, single oil cylinder mode such as two oil cylinder modes, single oil cylinder.These stretch modes that all can be used as two joint supporting leg casees are selected.Wherein, The telescopic process that two oil cylinder modes, single oil cylinder add rope row mode all has regularity, for stretching a joint supporting leg case earlier, stretches two joint supporting leg casees like two oil cylinder modes again; Single oil cylinder adds then two joint supporting leg case synchronization telescopes of rope row mode, and course of action all possesses predictability.
Single oil cylinder mode then is that oil cylinder heads on the directly flexible of two joint supporting leg case front ends; Because it is different that a joint supporting leg case and a fixed supporting leg case and a joint supporting leg and two save the friction force that produces between the supporting legs; Its telescopic process is that less that the supporting leg case constantly of friction force stretches out earlier; But the size of friction force is in a dynamic change procedure all the time, has therefore caused the randomness of one or two joint supporting leg casees in telescopic process.
The problem of the telescopic process randomness of bringing for single oil cylinder mode, the solution of main flow mainly contains static and detection of dynamic dual mode at present.
The Static Detection mode is to install inductance approach switch additional at one or two joint supporting leg casees and joint supporting leg case and a fixed supporting leg case place, promptly saves near inductive switching one or two and judges promptly after the supporting leg casees stretch out simultaneously that supporting leg stretches entirely.The detection of dynamic mode is to install displacement pickup additional, can the real-time flexible state that monitors supporting leg.
The shortcoming of Static Detection mode is that it must be mounted on the movable supporting leg case near switch; Therefore its circuit also will be followed the flexible of supporting leg case and stretch; And owing to the detection distance problem near switch, thereby the long-term work meeting of supporting leg causes the distortion of casing to cause inefficacy or interference near switch.The shortcoming of detection of dynamic mode is that the displacement pickup cost is high, the control relative complex, and the required signal wire (SW) that conducts to vehicle controller is more, causes the complexity of installation and maintenance.
Different stretch modes can influence the type selecting of detecting device; The different detection device then can bring Different control detection scheme and financial cost; Therefore; Consider from the transplantability angle of cost-cutting and technology, the manufacturer is to a kind of price is more cheap, plant maintenance is easier, seem urgent more and urgent in the general ductility demand of different tonnage hoisting cranes.
The utility model content
The purpose of the utility model is to provide a kind of supporting leg to stretch condition checkout gear entirely, directly detects the state of stretching entirely of supporting leg case, and it is practical, and control process is simple.The purpose of the utility model also is to provide a kind of engineering equipment that supporting leg is stretched condition checkout gear entirely that has.
For this reason; The utility model provides a kind of supporting leg to stretch condition checkout gear entirely on the one hand; Supporting leg comprises fixed supporting leg case and at least one movable supporting legs case; This detecting device comprises: be provided with the backguy stroke detection switch of normally closed switch contact, be installed on the fixed supporting leg case of supporting leg, its backguy is fixed on supporting leg and is on the last joint movable supporting legs case when stretching state entirely; And just judge the controller whether supporting leg is stretched entirely according to the level of pin, wherein, the pin of controller is electrically connected with said backguy stroke detection switch.
Further, above-mentioned at least one movable supporting legs case comprises two joints or three joint movable supporting legs casees.
Further, a power connection end of above-mentioned backguy stroke detection switch is electrically connected with the power taking switch, and another power connection end is electrically connected with conducting ring, and conducting ring is electrically connected with the pin of controller.
Further, the backguy of above-mentioned backguy stroke detection switch is that diameter is the steel rope of 3mm.
Further; Above-mentioned backguy stroke detection switch comprise first gear that rotates synchronously with backguy, with second gear of first meshed transmission gear and the derby that rotates synchronously with second gear; Wherein, Derby has outer teat, and backguy stroke detection switch has at least one normally closed switch contact that on the rotary path of the protrusion of derby, is provided with.
Further, above-mentioned derby is adjustable with respect to the installation site of second gear.
According to the utility model on the other hand, a kind of engineering equipment with support leg is provided, it is provided with above-mentioned supporting leg and stretches condition checkout gear entirely.
Further, the stretch mode of above-mentioned supporting leg is single oil cylinder mode.
Further, the stretch mode of above-mentioned supporting leg is that two oil cylinder modes or single oil cylinder add rope row mode.
Further, above-mentioned engineering equipment is a car hosit.
The supporting leg of the utility model is stretched condition checkout gear entirely, directly detects the final position state of supporting leg case and promptly stretches state entirely, the probabilistic interference of filtering dynamic stochastic process, characteristics such as have that cost is low, control is simple, portable strong and maintenance is convenient.
Except top described purpose, characteristic and advantage, other purpose, characteristic and the advantage that the utlity model has are with combining accompanying drawing to do further detailed explanation.
Description of drawings
Constitute the preferred embodiment that the part of this specification sheets, the accompanying drawing that is used for further understanding the utility model show the utility model, and be used for explaining the principle of the utility model with specification sheets.Among the figure:
Fig. 1 shows the schematic appearance of stretching the backguy stroke detection switch in the condition checkout gear according to the car hosit supporting leg of the utility model entirely;
Fig. 2 shows the birds-eye view of backguy stroke detection switch shown in Figure 1;
Fig. 3 shows according to the car hosit supporting leg of the utility model and stretches the scheme drawing that backguy stroke detection switch in the condition checkout gear is installed on supporting leg entirely;
Fig. 4 shows the principle schematic of stretching the backguy stroke detection switch in the condition checkout gear according to the car hosit supporting leg of the utility model entirely;
Fig. 5 shows the schematic circuit diagram of stretching condition checkout gear according to the car hosit supporting leg of the utility model entirely; And
Fig. 6 shows the supporting leg control flow chart of stretching condition checkout gear according to the utility model supporting leg entirely.
The specific embodiment
Embodiment to the utility model is elaborated below in conjunction with accompanying drawing, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
The utility model mainly is the solution that proposes to the stretch mode at random of supporting leg case, solved a series of problems that dynamic random property that the supporting leg case produces in telescopic process causes.
In the utility model, adopt backguy stroke detection switch (perhaps being called backguy reel switch) to stretch the detector of signal entirely as supporting leg, promptly on four fixed supporting leg casees four backguy reel switches are installed on the car hosit; Lifting one's head of backguy is fixed on the last joint movable supporting legs case; Supporting leg drives the backguy reel and rotates in telescopic process, when supporting leg reach stretch state entirely after; Through the backguy stroke trigger switch of prior setting, output signal to and handle the interface.
Fig. 1 and Fig. 2 show the schematic appearance of stretching the backguy stroke detection switch in the condition checkout gear according to the car hosit supporting leg of the utility model entirely.As depicted in figs. 1 and 2, switch 10 is a cylindrical structural, and backguy adopts diameter to be preferably the steel rope of 3mm; Outlet direction is shown in Fig. 1 and Fig. 2, and steel rope is wrapped on the reel, when backguy is stretched; The effect that it receives the inner volute spiral spring of reel is in the retraction tendency all the time.Switch 10 is drawn sub-L1 of power connection end and the sub-L2 of power connection end.
The backguy stroke detection switch of the utility model can form according to the transformation of existing stay-supported displacement pickup, is about to the potential device that stay-supported is arranged in sensor and is replaced getting final product by the normally closed switch contact.
This stay-supported displacement pickup generally includes shell, reel, volute spiral spring, backguy, worm screw, turbine and potential device.More information about the stay-supported displacement pickup can obtain from following patent documentation; These patent documentations such as backguy displacement sensor that Chinese utility model patent specification sheets CN201173759Y is disclosed; The dragline type crane brachium sensor special that China utility model patent specification sheets CN2064763U is disclosed, the draw-wire displacement sensor that Chinese utility model patent specification sheets CN201203403Y is disclosed.
Fig. 3 shows according to the car hosit supporting leg of the utility model and stretches the scheme drawing that backguy stroke detection switch in the condition checkout gear is installed on supporting leg entirely.As shown in Figure 3, supporting leg comprises fixed supporting leg case 21, first segment movable supporting legs case 22, the second joint movable supporting legs case 23 and is positioned at the supporting leg dish 24 of the second joint movable supporting legs case, 23 ends.
The main body of switch 10 is positioned at the afterbody of the fixed supporting leg case 21 of supporting leg; Backguy 11 is to fix at the front end of the second joint movable supporting legs case 23 under initial condition; Switch 10 is through sub-L1 of power connection end and the sub-L2 of power connection end (as shown in Figure 2) output signal; Under initial condition, switch is that NORM CLSD is that sub-L1 of power connection end and the sub-L2 of power connection end are conductings all the time, only after certain length is moved in backguy to, just switch is broken off; Promptly in the supporting leg telescopic process, only reach supporting leg stretch state full the time just switch is broken off.
Be appreciated that; Except that the main body of switch is mounted to the mounting means of hoisting crane fixed supporting leg case afterbody; But welding support on the correct position of fixed supporting leg case; The main body of switch can be fixed on the support, also can welding support on the last joint movable supporting legs case in-to-in correct position, and backguy the end of a thread is strapped on this support.
Backguy stroke detection switch application has been shown in supporting leg among above-mentioned Fig. 3 with two movable supporting legs casees; Be appreciated that; Also can be applied to have in the supporting leg of a movable supporting legs case or two above movable supporting legs casees; Since detect the final state of stretching entirely of supporting leg, the stretch mode of supporting leg there is not additional limits yet, portable strong.
Above-mentioned backguy stroke detection switch; Except stretch the normally closed switch contact of the backguy stroke of state entirely corresponding to supporting leg; Can also have normally closed switch contact corresponding to different backguy strokes; Promptly when supporting leg launched to reach a certain backguy stroke, corresponding normally closed switch contact was then broken off, and so can detect the real-time spread length of supporting leg.
Fig. 4 shows the principle schematic of stretching the backguy stroke detection switch in the condition checkout gear according to the car hosit supporting leg of the utility model entirely.As shown in Figure 4, omitted the transmission link of backguy to the first gear 13, the design of this transmission link can be with reference to above-mentioned stay-supported displacement pickup.Backguy is when stretching or bouncing back; First gear 13 drives second gear 14 and rotates, and is fixed with the derby 15 of can 360 degree regulating installation sites on second gear 14, and this derby 15 has protrusion 15a; This derby can be configured to cam; Normally closed switch contact 16 is positioned on the rotary path of derby 15, and when derby 15 turned to 16 places, normally closed switch contact, the protrusion of derby 15 pressed normally closed switch contact 16 from closure state.
So, can set the initial position of derby 15, when pullswitch arrives when stretching the cooresponding backguy stroke of state entirely with supporting leg, this derby just turns to the position that normally closed switch contact 16 is pressed from make position.
On the rotary path of this derby a plurality of normally closed switchs contact can be set at interval, so can realize the detection of multistage stroke.
In other embodiments, omit first gear and second gear, above-mentioned derby direct mount is to the turbine of above-mentioned stay-supported displacement pickup, and the normally closed switch contact replaces potential device to be arranged on the rotary path of protrusion of turbine.
Fig. 5 shows the schematic circuit diagram of stretching condition checkout gear according to the car hosit supporting leg of the utility model entirely.As shown in Figure 5; Because vehicle hangs that will power takeoff be opened earlier before carrying can build-up pressure preparing to get on the bus; The sub-L1 of switch 10 1 power connection ends inserts the power taking switch of power takeoff; Offer switch 24V voltage this moment, and the sub-L2 of another power connection end of switch reaches signal in the vehicle controller through conducting ring, and the controller received signal is judged the corresponding supporting leg state that stretches.
Fig. 6 shows the supporting leg control flow chart of stretching condition checkout gear according to the utility model supporting leg entirely.As shown in Figure 6, not stretch entirely under the state at supporting leg, switch 10 is in closure state all the time; Therefore after power takeoff was opened, switch 10 transmitted the 24V voltage of power takeoff conveying to controller, and controller judges that through the switch high level that collects supporting leg is in the state of not stretching entirely; Controller transmits alerting signal to read-out; And export a high level simultaneously and give buzzer phone, read-out shows the flexible state of four supporting legs, buzzer phone provides audible alarm; And cut off corresponding solenoid valve simultaneously; The crane attonity, through enforcement functionalities or remove supporting leg and do not stretch warning entirely and can proceed next step action, the operation work information of controller record this moment this moment.
When supporting leg reach stretch state entirely after, the switch of closure is broken off in backguy, controller receives low level signal, supporting leg is in the state of stretching entirely, alarm free output, operating personal can the safe in operation hoisting crane.
One of ordinary skill in the art will readily recognize that supporting leg stretches condition checkout gear entirely and not only can on car hosit, use, also can use having on other engineering equipment of support leg, for example be used for the concrete distributing car.And the stretch mode of supporting leg do not limit, and can be single oil cylinder mode, can be that single oil cylinder adds rope row mode yet, can also be two oil cylinder modes.
The advantage that the supporting leg of the utility model is stretched condition checkout gear entirely is following:
One, single oil cylinder more piece supporting leg case flexible has uncertain randomness; Will certainly increase the quantity of sensor; Thereby the complexity of bringing cost to promote and install, the utility model adopt backguy stroke detection switch as signal detection apparatus, directly detect the final position state of supporting leg case; The probabilistic interference of filtering dynamic stochastic process is a kind of very practical and easy control policy.
Two, this backguy device for detecting distance of travel not only is suitable for the stretch mode at random of supporting leg case, also can obtain similar detection and control effect for other stretch modes.
Three, this backguy device for detecting distance of travel also have with low cost, control is simple, portable strong and overhaul characteristics easily.
The preferred embodiment that the above is merely the utility model is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (9)
1. a supporting leg is stretched condition checkout gear entirely; Said supporting leg comprises fixed supporting leg case and at least one movable supporting legs case; It is characterized in that; Said detecting device comprises: be provided with the backguy stroke detection switch of normally closed switch contact, be installed on the fixed supporting leg case of supporting leg, its backguy is fixed on supporting leg and is on the last joint movable supporting legs case when stretching state entirely; And just judge the controller whether supporting leg is stretched entirely according to the level of pin, wherein, the pin of controller is electrically connected with said backguy stroke detection switch.
2. supporting leg according to claim 1 is stretched condition checkout gear entirely, it is characterized in that, said at least one movable supporting legs case comprises two joints or three joint movable supporting legs casees.
3. supporting leg according to claim 1 is stretched condition checkout gear entirely; It is characterized in that; One power connection end of said backguy stroke detection switch is electrically connected with the power taking switch, and another power connection end is electrically connected with conducting ring, and said conducting ring is electrically connected with the pin of said controller.
4. supporting leg according to claim 1 is stretched condition checkout gear entirely; It is characterized in that; Said backguy stroke detection switch comprise first gear that rotates synchronously with backguy, with second gear of first meshed transmission gear and the derby that rotates synchronously with said second gear; Wherein, said derby has outer teat, and said backguy stroke detection switch has at least one normally closed switch contact that on the rotary path of the protrusion of said derby, is provided with.
5. supporting leg according to claim 4 is stretched condition checkout gear entirely, it is characterized in that, the backguy of said backguy stroke detection switch is that diameter is the steel rope of 3mm.
6. the engineering equipment with support leg is characterized in that, is provided with according to each described supporting leg in the claim 1 to 5 to stretch condition checkout gear entirely.
7. the engineering equipment with support leg according to claim 6 is characterized in that, the stretch mode of said supporting leg is single oil cylinder mode.
8. the engineering equipment with support leg according to claim 6 is characterized in that, the stretch mode of said supporting leg is that two oil cylinder modes or single oil cylinder add rope row mode.
9. the engineering equipment with support leg according to claim 6 is characterized in that, said engineering equipment is a car hosit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205770772U CN202245854U (en) | 2010-10-25 | 2010-10-25 | Engineering equipment with support leg, and device for detecting full-extending state of support leg |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205770772U CN202245854U (en) | 2010-10-25 | 2010-10-25 | Engineering equipment with support leg, and device for detecting full-extending state of support leg |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202245854U true CN202245854U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205770772U Expired - Fee Related CN202245854U (en) | 2010-10-25 | 2010-10-25 | Engineering equipment with support leg, and device for detecting full-extending state of support leg |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202245854U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271025A (en) * | 2014-06-03 | 2016-01-27 | 利勃海尔工厂埃英根有限公司 | Mobile work machine having an outrigger and an extension for widening the support base |
| CN107200279A (en) * | 2017-06-16 | 2017-09-26 | 徐州重型机械有限公司 | Leg structure and mobilecrane |
| CN107448449A (en) * | 2017-07-04 | 2017-12-08 | 贵州航天天马机电科技有限公司 | One kind fixed point slfactuating latch |
| CN108408613A (en) * | 2018-03-12 | 2018-08-17 | 徐州徐工随车起重机有限公司 | A kind of protection of lorry-mounted crane transport vehicle all-position safety and remote diagnosis repair system |
| CN109374036A (en) * | 2018-09-28 | 2019-02-22 | 徐州徐工随车起重机有限公司 | A kind of support for high-altitude operation car Accurate Classification detection device and its detection method |
-
2010
- 2010-10-25 CN CN2010205770772U patent/CN202245854U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271025A (en) * | 2014-06-03 | 2016-01-27 | 利勃海尔工厂埃英根有限公司 | Mobile work machine having an outrigger and an extension for widening the support base |
| CN107200279A (en) * | 2017-06-16 | 2017-09-26 | 徐州重型机械有限公司 | Leg structure and mobilecrane |
| CN107448449A (en) * | 2017-07-04 | 2017-12-08 | 贵州航天天马机电科技有限公司 | One kind fixed point slfactuating latch |
| CN108408613A (en) * | 2018-03-12 | 2018-08-17 | 徐州徐工随车起重机有限公司 | A kind of protection of lorry-mounted crane transport vehicle all-position safety and remote diagnosis repair system |
| CN109374036A (en) * | 2018-09-28 | 2019-02-22 | 徐州徐工随车起重机有限公司 | A kind of support for high-altitude operation car Accurate Classification detection device and its detection method |
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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: 20120530 Termination date: 20151025 |
|
| EXPY | Termination of patent right or utility model |