CN201626789U - Outrigger stretching alarm device and crane truck comprising same - Google Patents
Outrigger stretching alarm device and crane truck comprising same Download PDFInfo
- Publication number
- CN201626789U CN201626789U CN2009202933811U CN200920293381U CN201626789U CN 201626789 U CN201626789 U CN 201626789U CN 2009202933811 U CN2009202933811 U CN 2009202933811U CN 200920293381 U CN200920293381 U CN 200920293381U CN 201626789 U CN201626789 U CN 201626789U
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- China
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- pressure switch
- supporting leg
- warning device
- outrigger
- alarm device
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Abstract
The utility model provides an outrigger stretching alarm device and a crane truck comprising same. In the outrigger stretching alarm device, an outrigger is driven by a hydraulic oil cylinder which is controlled by a pull rod, and the pull rod is connected with the hydraulic circuit of the hydraulic oil cylinder by a multiway valve and comprises a master lever for controlling the oil inlet pipeline and the oil return pipeline of the multiway valve. The alarm device comprises a power supply, a pressure switch and an alarm which are connected in series to form a circuit, wherein the pressure switch comprises a first pressure switch and a second pressure switch which are connected in parallel. The first pressure switch is arranged at the oil inlet pipeline, and the second pressure switch is arranged at the oil return pipeline. The outrigger stretching alarm device has the advantages of simple structure, less intermediate links, rapid action response, flexibility, reliability, good waterproof sealing performance and low cost.
Description
Technical field
The utility model relates to the flexible warning device of a kind of supporting leg and has the car hosit of this warning device, in particular to the flexible autoalarm of supporting leg of the car hosit with pull bar control formula supporting leg and have the car hosit of this device.
Background technology
At present, the flexible car hosit of pull bar control supporting leg is widely used.Usually, it is quite complicated that hoisting crane carries out the engineering-environment of operation, when operating personal carries out supporting leg telescopic lever when operation in hoisting crane one side, because of can't be in time and fully grasp ambient environment, make the supporting leg action may accidentally injure peripheral personnel, thereby cause taking place easily casualty accident, this has brought very large potential safety hazard for crane operation personnel and maintenance troubleshooting personnel and peripheral pedestrian.
For pull bar control supporting leg retractable vehicle hoisting crane, the correlation technique of also not stretching warning device at present about supporting leg.In the car hosit that non-pull bar control supporting leg stretches, the flexible scheme of reporting to the police of supporting leg realizes that by electric-controlled push-button is set this mode is not suitable for fully by pull bar control supporting leg telehoist.Now, the supporting leg that has that can be for reference stretches out detecting device and crane overload detecting device, and it mainly contains dual mode: a kind of is to carry out the judgement that supporting leg stretches out by an approaching inductive switch; Another kind is to determine whether to occur supporting leg and stretch out action by being installed in pressure switch in each support oil cylinder respectively.In adopting the mode of installing near switch, installation site near switch can be backward stick action position or supporting leg extended position, for this type of mode, can only obtain from as the state that do not stretch out of normality to the judgement that action occurs stretching out, and after occurring, action just is in closure state near switch in case stretch out always, yet after crane horizontal and vertical leg full extension finish, just need not again this to be judged warning, thereby this mode availability is relatively poor and not accurate enough.In the mode that adopts the setting pressure switch, most critical be installation site and the rated pressure closing point that will confirm pressure switch, usually pressure switch is installed in the supporting leg retractor device (such as, telescopic oil cylinder) in and the good rated pressure alarm set point of test is set, when supporting leg stretches, pressure switch closure when in-oil cylinder pressure reaches the rated pressure alarm set point, warning device is reported to the police, but stretching out oil cylinder during owing to stretching has the pressure oil cylinder that bounces back not have pressure (retraction action then opposite), thereby to realize identification automatically and accurate warning function, two pressure switches need be installed in every support leg device, this causes cost to increase, system architecture is complicated and be difficult to the position of reasonable Arrangement pressure switch, thereby be difficult to guarantee accurately and timely send the indication of reporting to the police, thereby operability is relatively poor and only be used to detect the 5th supporting leg overload detection usually.
The utility model content
At the problems referred to above, the utility model proposes the flexible warning device of a kind of supporting leg, it is used for pull bar control supporting leg retractable vehicle hoisting crane, this apparatus structure is simple, be easy to installation and maintenance and dependable performance, can operate at pull bar and accurately and timely send the indication of reporting to the police when supporting leg stretches, thereby effectively avoid casualty accident to take place.
One side of the present utility model provides a kind of supporting leg warning device that stretches, it is used for the flexible car hosit of pull bar control supporting leg, described supporting leg is driven by the hydraulic ram by pull bar control, described pull bar is connected with the hydraulic circuit of described hydraulic ram via multiway valve, and described pull bar comprises the chargine line of controlling described multiway valve and the master lever of oil return line, wherein, described warning device comprises the power supply that is followed in series to form the loop, pressure switch and annunciator, wherein, described pressure switch comprises first pressure switch and second pressure switch in parallel, described first pressure switch is arranged at described chargine line, and described second pressure switch is arranged at described oil return line.
Preferably, described annunciator comprises the both sides, chassis that are separately positioned on described hoisting crane and first buzzer phone that is one another in series and second buzzer phone.
Preferably, the degree of protection of described first pressure switch and described second pressure switch is IP67.
Of the present utility modelly provide a kind of car hosit on the other hand, comprised aforesaid warning device.
According to the flexible warning device of supporting leg of the present utility model, by adopting two pressure switches that configure the rated pressure alarm set point and buzzer phone can realize the supporting leg warning function that stretches, have simple in structure, intermediate link is few, the action reflection rapidly, flexibility and reliability, plurality of advantages that water-proff packing is good and with low cost.And pressure switch only need can be installed in the hydraulic circuit system of hoisting crane easily by adaptor union, therefore need not increase extra cost.And owing to need not for each telescopic oil cylinder pressure switch to be set all, thereby the required number of devices of whole warning device significantly reduces, and this is for installing, debugging, safeguarding and all brought bigger facility.
Description of drawings
By detailed description below in conjunction with accompanying drawing, will be understood better above-mentioned and others of the present utility model, feature and other advantage, in the accompanying drawing, adopt same reference numerals to represent similar elements, and wherein:
Fig. 1 shows according to the pull bar of the utility model preferred embodiment and controls the multiway valve that uses in the supporting leg retractable vehicle hoisting crane, and pull bar links to each other via the hydraulic circuit of the hydraulic ram that this multiway valve and driving supporting leg stretch;
Fig. 2 schematically shows the hydraulic circuit according to the flexible hydraulic ram of driving supporting leg in the pull bar control supporting leg retractable vehicle hoisting crane of the utility model preferred embodiment; And
Fig. 3 schematically shows the circuit diagram according to the flexible autoalarm of supporting leg of the utility model preferred embodiment.
The specific embodiment
Below in conjunction with accompanying drawing, further describe the specific embodiment of the present utility model.Yet the utility model can be with a lot of multi-form enforcements, the embodiment that should not be understood that to only limit to here and presented.On the contrary, provide these embodiment, made that the disclosure is comprehensive and complete, and all sidedly scope of the present utility model has been conveyed to those skilled in the art.In the accompanying drawing, same reference numerals is represented similar elements.
Fig. 1 shows according to the pull bar of the utility model preferred embodiment and controls the master control multiway valve of getting off that uses in the supporting leg retractable vehicle hoisting crane, and pull bar links to each other via the hydraulic circuit of the hydraulic ram that this multiway valve and driving supporting leg stretch, with stretching of control supporting leg.Fig. 2 schematically shows the hydraulic circuit according to the flexible hydraulic ram of driving supporting leg in the pull bar control supporting leg retractable vehicle hoisting crane of the utility model preferred embodiment.As shown in the figure, pull bar comprises: master lever 210, chargine line 310 (the C-D chargine line shown in Fig. 2 of control multiway valve 300, be formed by connecting by C mouth among Fig. 1 and the hard tube between the D mouth) and oil return line 320 (the H oil return line shown in Fig. 1 and Fig. 2, usually be connected with flexible pipe) so that by oil pump 400 through chargine line 310 to the hydraulic ram fuel feeding or make the hydraulic oil of hydraulic ram be back to oil sump tank 500 from oil return line 320; Four levels and vertical leg joystick 220,230,240 and 250 are respectively applied for the expanding-contracting action of left front, left back, right front, right back horizontal support legs 600 of control and left front, left back, right front, right back vertical leg 700; And the 5th supporting leg joystick 260, be used to control the expanding-contracting action of the 5th supporting leg 800.
In according to pull bar control supporting leg retractable vehicle hoisting crane of the present utility model, send the indication of reporting to the police when getting off the supporting leg expanding-contracting action timely and accurately automatically in order to make, also be provided with autoalarm.Fig. 3 schematically shows the circuit diagram according to the flexible autoalarm of supporting leg of the utility model preferred embodiment.This autoalarm 10 comprises that series connection constitutes pressure switch 12, power supply 14, source switch 16 and the annunciator 18 in loop.Particularly, this pressure switch comprises first pressure switch 122 and second pressure switch 124 that is connected in parallel to each other, with reference to Fig. 1, these two pressure switches 122 and 124 can be gone into oil pipe line 310 (being the C-D chargine line) and oil return line 320 (being the H oil return line) such as what the mode that adds adapter substitute and T-pipe joint by welded joint was installed in the master control multiway valve 300 of getting off respectively.Preferably, in this embodiment, annunciator 18 comprises two buzzer phones 182 and 184 that are installed in both sides, hoisting crane chassis respectively.And preferably, power supply 14 can adopt storage battery.
The operation of stretching autoalarm 10 according to supporting leg of the present utility model is described below in conjunction with Fig. 1-3.At first, source switch 16 closures of warning device 10.Supporting leg 600 when hoisting crane, one of 700 and 800 need stretch out action the time, master lever 210 is to pressing down, the oil pipe line 310 of going into of master control multiway valve 300 of getting off is communicated with oil pump, hydraulic oil in the oil pump 400 enters in the hydraulic circuit via going into oil pipe line 310 (being that C-D goes into oil pipe line), thereby in going into oil pipe line 310, there is pressure, these first pressure switch, 122 closures when force value reaches specified alarm pressure value pre-set in first pressure switch 122, first buzzer phone 182 and second buzzer phone 184 get electric and send chimes of doom at this moment, remind peripheral personnel to take care and dodge; Supporting leg 600 when hoisting crane, one of 700 and 800 need bounce back action the time, upwards pulling of master lever 210, the oil return line 320 of master control multiway valve 300 of getting off is communicated with oil sump tank 500, hydraulic oil in the hydraulic circuit is back in the oil sump tank 500 via oil return line 320 (being the H oil return line), thereby there is pressure in 320 places at oil return line, these second pressure switch, 124 closures when force value reaches specified alarm pressure value pre-set in second pressure switch 124, first buzzer phone 182 and second buzzer phone 184 get electric and send chimes of doom at this moment, remind peripheral personnel to take care and dodge.
In this embodiment, the specified alarm pressure value of first pressure switch 122 and second pressure switch 124 (that is the force value that pressure switch contact is connected) is that the pressure of master control multiway valve hydraulic circuit (comprising C-D chargine line and H mouth oil return line) during according to actual supporting leg expanding-contracting action is set.And, consider that the noise of hoisting crane during the supporting leg expanding-contracting action is bigger, thereby be separately installed with first buzzer phone 182 and second buzzer phone 184, so that guarantee to remind effectively peripheral personnel to note in both sides, hoisting crane chassis.Preferably, the sound pressure level of each buzzer phone is about 120 decibels.In order to adapt to the various operating environments of hoisting crane preferably, in this embodiment, first pressure switch 122 and second pressure switch 124 all have higher degree of protection, and the degree of protection that preferably has is IP67.
According to warning device of the present utility model, by adopting two pressure switches that configure the rated pressure alarm set point and buzzer phone can realize the supporting leg warning function that stretches, have simple in structure, intermediate link is few, the action reflection rapidly, flexibility and reliability, plurality of advantages that water-proff packing is good and with low cost.And pressure switch only need can be installed in the hydraulic circuit system of hoisting crane easily by adaptor union, therefore need not increase extra cost.And owing to need not for each telescopic oil cylinder pressure switch to be set all, thereby the required number of devices of whole warning device significantly reduces, and this is for installing, debugging, safeguarding and all brought bigger facility.
Though the utility model is described in conjunction with being considered to practical example embodiment at present, yet, those skilled in the art will appreciate that the utility model is not limited to disclosed exemplary embodiment.All within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (4)
1. the flexible warning device (10) of a supporting leg, described supporting leg is driven by the hydraulic ram by pull bar control, described pull bar is connected with the hydraulic circuit of described hydraulic ram via multiway valve (300), and described pull bar comprises the chargine line (310) of the described multiway valve of control (300) and the master lever (210) of oil return line (320), it is characterized in that, described warning device (10) comprises power supply (14), pressure switch (12) and the annunciator (18) that is followed in series to form the loop, wherein
Described pressure switch (12) comprises first pressure switch (122) and second pressure switch (124) in parallel, described first pressure switch (122) is arranged at described chargine line (310), and described second pressure switch (124) is arranged at described oil return line (320).
2. warning device according to claim 1 (10) is characterized in that, first buzzer phone (182) and second buzzer phone (184) that described annunciator (18) comprises the both sides, chassis that are separately positioned on described hoisting crane and is one another in series.
3. warning device according to claim 1 (10) is characterized in that, the degree of protection of described first pressure switch (122) and described second pressure switch (124) is IP67.
4. a car hosit comprises according to any described warning device (10) among the claim 1-3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202933811U CN201626789U (en) | 2009-12-21 | 2009-12-21 | Outrigger stretching alarm device and crane truck comprising same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202933811U CN201626789U (en) | 2009-12-21 | 2009-12-21 | Outrigger stretching alarm device and crane truck comprising same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201626789U true CN201626789U (en) | 2010-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202933811U Expired - Fee Related CN201626789U (en) | 2009-12-21 | 2009-12-21 | Outrigger stretching alarm device and crane truck comprising same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201626789U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275840A (en) * | 2011-06-29 | 2011-12-14 | 徐州重型机械有限公司 | Crane support leg control device and crane |
-
2009
- 2009-12-21 CN CN2009202933811U patent/CN201626789U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102275840A (en) * | 2011-06-29 | 2011-12-14 | 徐州重型机械有限公司 | Crane support leg control device and crane |
| CN102275840B (en) * | 2011-06-29 | 2013-06-19 | 徐州重型机械有限公司 | Crane support leg control device and crane |
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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: 20101110 Termination date: 20151221 |
|
| EXPY | Termination of patent right or utility model |