CN201882822U - Telescopic boom stretching-retracting and buffering device and crane with telescopic boom stretching and buffering device - Google Patents
Telescopic boom stretching-retracting and buffering device and crane with telescopic boom stretching and buffering device Download PDFInfo
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- CN201882822U CN201882822U CN2010202719242U CN201020271924U CN201882822U CN 201882822 U CN201882822 U CN 201882822U CN 2010202719242 U CN2010202719242 U CN 2010202719242U CN 201020271924 U CN201020271924 U CN 201020271924U CN 201882822 U CN201882822 U CN 201882822U
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- telescopic
- extended position
- telescopic boom
- retracted position
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Abstract
The utility model provides a telescopic boom stretching-retracting and buffering device, comprising a first stretching-out position sensor, a first retracting position sensor and a buffering control mechanism, wherein the first stretching-out position sensor is used for detecting whether a telescopic girder of the telescopic boom is stretched to a presetting stretching-out position close to a full stretching-out position on a basic beam; the first retracting position sensor is used for detecting whether the telescopic girder of the telescopic boom is retracted to a presetting retracting position close to a full retracting position of the basic beam; the buffering control mechanism is used for reducing the stretching-out or retracting speed of the telescopic boom when the detection results of the stretching-out position sensor and the retracting position sensor represent that the presetting stretching-out position or the presetting retracting position are achieved. In the telescopic boom stretching-retracting and buffering device, position sensors are arranged at the stretching-out and retracting limit positions of the telescopic boom, once the condition that the telescopic boom reaches the stretching-out or retracting limit position is detected, the stretching-out or retracting speed of the telescopic boom can be reduced through hydraulic control, the impact force between the telescopic girder and the basic beam can be reduced when the telescopic boom reaches the limit position and the service life of the telescopic girder and the basic beam is prolonged.
Description
Technical field
The utility model relates to the hoisting crane field, more specifically, relates to a kind of telescopic boom telescopic buffer and the hoisting crane with this device.
Background technology
According to present gantry crane sling present situation, when its telescopic boom stretches to the final position, because the inertia of telescopic boom can produce greater impact.Suspender in the market mainly adopts dual mode to cushion impact between telescopic girder and the basic beam: a kind of is that the method that increases cushion rubber or limiting stopper on basic beam reduces the impact of suspender in flexible, this kind method can play certain buffer action, but cushion rubber and limiting stopper damage easily owing to withstanding shocks for a long time, and replacing need expend certain manpower and material resources; Another kind of mode is when the suspender telescopic girder reaches end position, realizes buffering by the damping oil cylinder that increases on the basic beam, the buffering when this kind method can only realize that suspender stretches out, telescopic girder and the impact between the beam substantially in the time of can't alleviating the suspender withdrawal.
Therefore, be necessary to provide a kind of device, be used to solve telescopic boom telescopic girder and the impulsive force between the beam substantially when flexible.
The utility model content
The utility model aims to provide a kind of telescopic boom telescopic buffer and has the hoisting crane of this device, can solve telescopic boom telescopic girder and the impulsive force between the beam substantially when flexible.
For this reason, according to an aspect of the present utility model, a kind of telescopic boom telescopic buffer is provided, it is characterized in that, comprise: the first extended position sensor, predetermined extended position when whether the telescopic girder that is used to detect telescopic boom reaches near extended position fully on the basic beam of telescopic boom, it comprises: the first extended position triggering portion is arranged at the end of telescopic girder; The first extended position induction part is arranged on the predetermined extended position on the basic beam; The first retracted position sensor, the predetermined retracted position when being used to detect telescopic girder and whether being withdrawn near retracted position fully on the basic beam comprises: the first retracted position triggering portion is arranged at the end of telescopic girder; The first retracted position induction part is arranged at the predetermined retracted position on the basic beam; The buffering control mechanism when the testing result of extended position sensor and retracted position sensor represents that telescopic girder arrives predetermined extended position on the basic beam or predetermined retracted position, reduces stretching out or retraction speed of telescopic girder.
Further, telescopic boom telescopic buffer described in the utility model can also comprise: the second extended position sensor, be used to detect telescopic girder and whether reach described complete extended position on the basic beam, comprise: the second extended position triggering portion, with the first extended position triggering portion be same triggering portion; The second extended position induction part is arranged at the described complete extended position on the basic beam; The second retracted position sensor is used to detect telescopic girder and whether is withdrawn into complete retracted position on the described basic beam, comprising: the second retracted position triggering portion, with the first retracted position triggering portion be same triggering portion; The second retracted position induction part is arranged at the described complete retracted position on the basic beam.
Further, predetermined extended position, complete extended position, predetermined retracted position, and retracted position all can be arranged on the axis of telescopic boom fully, and the distance between predetermined extended position and the complete extended position can equal the distance between predetermined retracted position and the described complete retracted position.
Further, the first extended position triggering portion and the first retracted position triggering portion are along the axial setting of telescopic boom, and distance between the two can equal the distance between predetermined extended position and the complete extended position.
Further, the first extended position triggering portion and the first retracted position triggering portion can be sensing chip; The first extended position induction part, the first retracted position induction part, the second extended position induction part, and the second retracted position induction part all can be near switch.
Further, the buffering control mechanism can comprise hydraulic pressure regulation and control unit, and this hydraulic pressure regulation and control unit can comprise: hydraulic tubing; The telescopic drive motor drives telescopic girder and stretches; Flow control portion is connected in the hydraulic tubing, controls the stretching speed of telescopic drive motor driven telescopic girder according to the testing result of extended position sensor and retracted position sensor.
Further, the flow control portion of hydraulic tubing can comprise: first hydraulic tubing, for telescopic girder provides the first telescopic drive power; Second hydraulic tubing provides the second telescopic drive power that is lower than the first telescopic drive power for telescopic girder; Solenoid directional control valve selects to open first hydraulic tubing or the described second hydraulic tubing work according to the testing result of extended position sensor and retracted position sensor.
Further, first hydraulic tubing can comprise the first segment discharge orifice, and second hydraulic tubing can comprise second cutoff port, and the aperture of first segment discharge orifice is greater than the aperture of second cutoff port.
According to another aspect of the present utility model, a kind of hoisting crane also is provided, it comprises above-mentioned telescopic boom telescopic buffer.
Further, the telescopic boom telescopic buffer can be arranged on the telescopic crane boom.
The utlity model has following technique effect:
The end position that stretches out and withdraw at telescopic boom is provided with position transduser, be used to detect telescopic boom and whether reach the end position that stretches out or withdraw, be about to reach the end position that stretches out or withdraw in case detect telescopic boom, just can reduce stretching out of telescopic boom or retraction speed by fluid control, reduce telescopic boom when reaching the limit of the position, impulsive force between its telescopic girder and the basic beam, the service life of improving telescopic boom.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.Below with reference to accompanying drawings, the utility model is described in further detail.
Description of drawings
Accompanying drawing is used to provide further understanding of the present utility model, constitutes the application's a part, and illustrative examples of the present utility model and explanation thereof are used to explain the utility model, do not constitute improper qualification of the present utility model.In the accompanying drawings:
Fig. 1 is the telescopic boom telescopic buffer installation site scheme drawing of the utility model preferred embodiment;
Fig. 2 is the hydraulic pressure regulation and control block construction scheme drawing of the utility model preferred embodiment; And
Fig. 3 is the local enlarged diagram of the position transduser of the utility model preferred embodiment.
The specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Fig. 1 is the telescopic boom telescopic buffer installation site scheme drawing of the utility model preferred embodiment, as shown in Figure 1, the utility model provides a kind of telescopic boom telescopic buffer, it comprises: the first extended position sensor, be used to detect described telescopic boom whether reach near and reach complete extended position, this sensor can comprise: the first extended position triggering portion can be arranged at the end of telescopic girder; The first extended position induction part can be arranged on the predetermined extended position on the basic beam; The first retracted position sensor, be used to detect described telescopic boom whether be withdrawn near and reach complete retracted position, this sensor can comprise: the first retracted position triggering portion is arranged at the end of described telescopic girder; The first retracted position induction part is arranged at the predetermined retracted position on the described basic beam; The buffering control mechanism, according to the testing result of the first extended position sensor and the first retracted position sensor, the stretching out or retraction speed of telescopic girder of control telescopic boom, wherein, when complete extended position on the approaching basic beam of telescopic girder or complete retracted position, the control telescopic girder slows down and stretches out; When telescopic girder reach on the basic beam complete extended position or fully during retracted position, control described telescopic boom and stop to stretch.
Can realize controlling more accurately in order to make telescopic boom telescopic buffer described in the utility model, this shock absorber can also comprise: the second extended position sensor, be used to detect described telescopic girder and whether reach described complete extended position on the described basic beam, this sensor can comprise: the second extended position triggering portion can be same triggering portion with the first extended position triggering portion; The second extended position induction part is arranged at the complete extended position on the basic beam; The second retracted position sensor is used to detect described telescopic girder and whether is withdrawn into complete retracted position on the basic beam, comprising: the second retracted position triggering portion can be same triggering portion with the first retracted position triggering portion; The second retracted position induction part is arranged at the complete retracted position on the described basic beam.
For the induced signal that makes sensor more accurate, predetermined extended position, complete extended position, predetermined retracted position, and retracted position all should be arranged on the axis of telescopic boom fully, and the distance between predetermined extended position and the complete extended position should equal the distance between predetermined retracted position and the complete retracted position.Correspondingly, the first extended position triggering portion and the first retracted position triggering portion are along the axial setting of telescopic boom, and distance between the two equals the distance between predetermined extended position and the complete extended position.
In order to make telescopic boom telescopic buffer described in the utility model can be easy to more realize that the first extended position triggering portion and the first retracted position triggering portion can all adopt sensing chip, i.e. sensing chip 6 and sensing chip 5; The first extended position induction part, the first retracted position induction part, the second extended position induction part, and the second retracted position induction part can all adopt near switch, promptly near switch 3, near switch 2, near switch 4, and near switch 1.
The utility model reduces the stretching speed of telescopic boom by the control to hydraulic efficiency pressure system, reduces telescopic girder and the cushion effect between the beam substantially.Below in conjunction with accompanying drawing, the working process of the hydraulic efficiency pressure system of described employing of the present utility model is described in detail.
Fig. 2 is the hydraulic pressure regulation and control block construction scheme drawing of the utility model preferred embodiment; Fig. 3 is the local enlarged diagram of the position transduser of the utility model preferred embodiment, as shown in Figures 2 and 3, principle of work of the present utility model is: the hydraulic oil of volume adjustable hydraulic pump 15 outputs arrives flexible motor 9 through solenoid directional control valve, make flexible motor 9 revolutions, it is flexible that flexible motor 9 revolutions drive suspender by chain.Y1 gets that suspender stretches out when electric, and Y2 gets suspender withdrawal when electric.The suspender stretching speed is relevant with volume adjustable hydraulic pump 15 discharge capacities.The discharge capacity of volume adjustable hydraulic pump 15 is relevant with control oil channel.Control oil arrives the oil pump control end through solenoid directional control valve and flow control member 7 or 8, and wherein flow control member is that cutoff port 8 is littler than the aperture of cutoff port 7.When control oil arrived the oil pump control end through cutoff port 8, oil pump capacity was little, and flexible motor 9 revolutions are slow, and suspender is slowly flexible; When control oil arrived the oil pump control end through cutoff port 7, oil pump capacity was big, and flexible motor 9 revolutions are fast, and suspender is soon flexible; Flexible during near terminal point when suspender, the commutation by solenoid directional control valve makes control oil channel become the cutoff port 8 of flowing through by the cutoff port 7 of flowing through, and the suspender stretching speed that slows down reduces to impact.
That Y1, Y2, Y3 electromagnet get is electric, dead electricity can be by controller 10 controls.Get electricly when pressing the time control Y1 that stretches out button, unclamp control Y1 dead electricity when stretching out button; When pressing retract button control Y2 get electric, control Y2 dead electricity when unclamping retract button.In addition, when near switch 1,2,3,4 send signal can for when aiming at sensing chip controller 10, control electromagnet by controller 10 then and get dead electricity.Press when stretching out button Y1 and get electricly, if controller 10 has also received the signal that sends near switch 3 under this state, then control Y3 also; If press and stretch out button Y1 and get that controller 10 has also received the signal that sends near switch 4 under the electricity condition, then control Y1, Y2, Y3 all must not; Press withdrawal during button Y2 get electricly, if controller 10 has also received the signal that sends near switch 2 under this state, then control Y3 also; Get that controller 10 has also received the signal that sends near switch 1 under the electricity condition if press withdrawal button Y2, then control Y1, Y2, Y3 all must not.
Can arrange sensing chip 5 and sensing chip 6 at gantry crane sling telescopic girder end, at the suspender body, also can be to arrange four on the basic beam near switch 1,2,3,4, wherein, when withdrawing fully, aims at sensing chip 5,6 by suspender near switch 1,2, when suspender rises from fully, aim at sensing chip 5,6 near switch 3,4.When aiming at sensing chip, can send signal to controller 10 near switch near switch.
The working process of telescopic boom telescopic buffer described in the utility model is as follows: electromagnet Y1 gets suspender emersion when electric, and electromagnet Y2 gets suspender withdrawal when electric; Electromagnet Y3 must not when electricity, and oil pump control oil flows through through cutoff port 7, and Y3 gets that oil pump control oil flows through through cutoff port 8 when electric, wherein the aperture of cutoff port 8 to 7 is little, and therefore when oil flow through through cutoff port 8, oil pump output discharge capacity was little, when oil flow through through cutoff port 7, oil pump output discharge capacity was big.When suspender stretches out (Y1 be in electricity condition) near end position, near switch 3 aimed at sensing chip and to controller 10 send signal (Y1 be in electricity condition, and controller 10 receives the signal near switch 3), then controller 10 control electromagnet Y3 are also.This moment, the control oil channel footpath switched to cutoff port 8 from cutoff port 7, and oil pump capacity is reduced, and then caused flexible motor 9 speed of revolutionss slack-off, reduced suspender and stretched out speed, reduced to impact.Suspender continues to stretch out, when having aimed at sensing chip near switch 4 and when controller 10 sends signal, then show suspender stretch out and put in place (this moment Y1 be electricity condition, and controller 10 receives the signal near switch 4), then controller 10 control electromagnet Y1, Y2, Y3 all must not.Suspender withdrawal (this moment Y2 be electricity condition) is during near end position, near switch 2 aimed at sensing chip and to controller 10 send signal (this moment state be that Y2 gets, and controller 10 receives the signal near switch 2), then controller 10 control electromagnet Y3 are also.This moment, the control oil channel footpath switched to cutoff port 8 from cutoff port 7, and oil pump capacity is reduced, and then caused flexible motor 9 speed of revolutionss slack-off, reduced the suspender retraction speed, reduced to impact.Suspender continues withdrawal, when aimed at sensing chip near switch 1 and when controller 10 sends signal (this moment state be that Y2 gets, and controller 10 receives the signal near switch 1), show that then the suspender withdrawal puts in place, then controller 10 control electromagnet Y1, Y2, Y3 all must not.
In addition, another aspect of the present utility model also provides a kind of hoisting crane, and it comprises above-mentioned telescopic boom telescopic buffer, and this telescopic boom telescopic buffer can be arranged on the telescopic boom of hoisting crane.
The above is a preferred embodiment of the present utility model only, 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 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 (10)
1. a telescopic boom telescopic buffer is characterized in that, comprising:
The first extended position sensor comprises:
The first extended position triggering portion (6) is arranged at the end of the telescopic girder of telescopic boom;
The first extended position induction part (3) is arranged on the predetermined extended position on the basic beam of telescopic boom;
The first retracted position sensor comprises:
The first retracted position triggering portion (5) is arranged at the end of described telescopic girder;
The first retracted position induction part (2) is arranged at the predetermined retracted position on the described basic beam;
The buffering control mechanism.
2. telescopic boom telescopic buffer according to claim 1 is characterized in that, also comprises:
The second extended position sensor comprises:
The second extended position triggering portion, with the described first extended position triggering portion (6) be same triggering portion;
The second extended position induction part (4) is arranged at the described complete extended position on the described basic beam;
The second retracted position sensor comprises:
The second retracted position triggering portion, with the described first retracted position triggering portion (5) be same triggering portion;
The second retracted position induction part (1) is arranged at the described complete retracted position on the described basic beam.
3. telescopic boom telescopic buffer according to claim 2, it is characterized in that, described predetermined extended position, described complete extended position, described predetermined retracted position, and described complete retracted position all is arranged on the axis of described telescopic boom, and the distance between described predetermined extended position and the described complete extended position equals the distance between described predetermined retracted position and the described complete retracted position.
4. telescopic boom telescopic buffer according to claim 3, it is characterized in that, described first extended position triggering portion (6) and the axial setting of the described first retracted position triggering portion (5) along described telescopic boom, distance between the two equals the distance between described predetermined extended position and the described complete extended position.
5. telescopic boom telescopic buffer according to claim 4 is characterized in that,
Described first extended position triggering portion (6) and the described first retracted position triggering portion (5) are sensing chip;
The described first extended position induction part (3), the first retracted position induction part (2), the second extended position induction part (4), and the second retracted position induction part (1) is near switch.
6. telescopic boom telescopic buffer according to claim 5 is characterized in that, described buffering control mechanism comprises hydraulic pressure regulation and control unit, and described hydraulic pressure regulation and control unit comprises: hydraulic tubing;
Telescopic drive motor (9) drives described telescopic girder and stretches;
Flow control portion is connected in the described hydraulic tubing.
7. telescopic boom telescopic buffer according to claim 6 is characterized in that, the flow control portion of described hydraulic tubing comprises:
First hydraulic tubing;
Second hydraulic tubing;
Solenoid directional control valve.
8. telescopic boom telescopic buffer according to claim 7, it is characterized in that, described first hydraulic tubing comprises first segment discharge orifice (7), and described second hydraulic tubing comprises second cutoff port (8), and the aperture of described first segment discharge orifice (7) is greater than the aperture of described second cutoff port (8).
9. a hoisting crane is characterized in that, comprises according to each described telescopic boom telescopic buffer in the claim 1 to 8.
10. hoisting crane according to claim 9 is characterized in that, described telescopic boom telescopic buffer is arranged on the described telescopic crane boom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202719242U CN201882822U (en) | 2010-07-27 | 2010-07-27 | Telescopic boom stretching-retracting and buffering device and crane with telescopic boom stretching and buffering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202719242U CN201882822U (en) | 2010-07-27 | 2010-07-27 | Telescopic boom stretching-retracting and buffering device and crane with telescopic boom stretching and buffering device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201882822U true CN201882822U (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202719242U Expired - Fee Related CN201882822U (en) | 2010-07-27 | 2010-07-27 | Telescopic boom stretching-retracting and buffering device and crane with telescopic boom stretching and buffering device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201882822U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012155747A1 (en) * | 2011-05-18 | 2012-11-22 | 湖南三一智能控制设备有限公司 | Telescopic boom and engineering machine comprising the same |
| CN103625441A (en) * | 2013-12-13 | 2014-03-12 | 中联重科股份有限公司 | Control system and control method of landing legs |
| CN105197820A (en) * | 2014-10-16 | 2015-12-30 | 徐州重型机械有限公司 | Arm position detection device, method and crane |
-
2010
- 2010-07-27 CN CN2010202719242U patent/CN201882822U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012155747A1 (en) * | 2011-05-18 | 2012-11-22 | 湖南三一智能控制设备有限公司 | Telescopic boom and engineering machine comprising the same |
| CN103625441A (en) * | 2013-12-13 | 2014-03-12 | 中联重科股份有限公司 | Control system and control method of landing legs |
| CN103625441B (en) * | 2013-12-13 | 2016-09-21 | 中联重科股份有限公司 | The control system of supporting leg and control method |
| CN105197820A (en) * | 2014-10-16 | 2015-12-30 | 徐州重型机械有限公司 | Arm position detection device, method and crane |
| CN105197820B (en) * | 2014-10-16 | 2017-08-08 | 徐州重型机械有限公司 | A kind of arm level detecting apparatus, method 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: 20110629 Termination date: 20150727 |
|
| EXPY | Termination of patent right or utility model |