CN205500633U - Proportion type divides regional stability control torque limiter system - Google Patents
Proportion type divides regional stability control torque limiter system Download PDFInfo
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- CN205500633U CN205500633U CN201620233461.8U CN201620233461U CN205500633U CN 205500633 U CN205500633 U CN 205500633U CN 201620233461 U CN201620233461 U CN 201620233461U CN 205500633 U CN205500633 U CN 205500633U
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Abstract
The utility model discloses a proportion type divides regional stability control torque limiter system, including area detection unit, proportion pressure compensation valve, torque limiter unloading valve and torque limiter control valve, the area detection unit, it is regional to detect the hoist work at present, the set pressure of controlling ratio pressure compensation valve, proportion pressure compensation valve is proportion type pressure compensation valve, can be continuous according to the electric signal of input, real -time set pressure setting value in proportion, and set up the hoist and have the biggest different work moment when different work area, proportion pressure compensation valve outside is equipped with the first hydraulic fluid port of proportion pressure compensation valve, proportion pressure compensation valve second hydraulic fluid port, and the first hydraulic fluid port of proportion pressure compensation valve is through explosion -proof valve, a proportion variable -amplitude balance valve and a first change no pole chamber intercommunication, proportion pressure compensation valve second hydraulic fluid port and the first hydraulic fluid port of torque limiter control valve intercommunication, the torque limiter valve is constituteed jointly to torque limiter unloading valve and torque limiter control valve, accomplishes hoist torque limiter function.
Description
Technical field
This utility model relates to a kind of proportional-type subregion stability control moment and limits system, belongs to lorry-mounted crane technical field.
Background technology
In recent years, along with market, the development of technology, the elevating capacity of lorry-mounted crane improves constantly, and arm-folding crane increases day by day in the application of China, and the requirement to its job safety improves the most day by day.The effect of moment limiting system is to limit operation torque, plays the effect of safeguard protection.Therefore, moment limiting system, as the topmost security protection system of lorry-mounted crane, is increasingly becoming the research emphasis of lorry-mounted crane.
Prior art all proposes and realizes, based on hydraulically-controlled type moment restriction valve, the technical scheme that lorry-mounted crane moment limits, but the maximum functional moment that the moment limiting system of the program can limit is unique.For lorry-mounted crane, its complete machine job stability is directly reversely supported moment etc. by machine gravity and supporting leg and is limited, in horizontal surface areas, its can the maximum functional moment of steady operation the most different, in order to ensure the safety of overall operation, moment limiting system unique for maximum functional moment, the setting of its maximum functional moment must is fulfilled for crane safety of operation in the most dangerous region, so, the crane elevating capacity when other regional works will be caused to incur loss, be unfavorable for effective utilization of crane lifting performance.The such issues that of for solving, Palfinger proposes a kind of high-performance stabilitrak (HPSC), detecting element is stretched out by angle of revolution sensor, long angle transducer and supporting leg, measure the duty of crane, and accurately calculate by having the controller of powerful computing capability, it is achieved mating of the maximum functional moment of crane working region and permission.The problem that the program can well solve the crane output loss that the above-mentioned uniqueness due to maximum functional moment is brought, improve the elevating capacity utilization ratio of crane, but need more sensor element, improve system failure rate, and controller performance requirements is high, cost is high, is not suitable for the use of the lorry-mounted crane of low cost.
For the problems referred to above, need to develop and a kind of configure proportional-type subregion stability control moment restriction system simple, low cost, that be capable of crane working region and mate with the maximum functional moment of permission.
Utility model content
Purpose: in order to overcome the deficiencies in the prior art, this utility model provides a kind of proportional-type subregion stability control moment to limit system.
Technical scheme: for solving above-mentioned technical problem, the technical solution adopted in the utility model is:
A kind of proportional-type subregion stability control moment limits system, it is characterised in that: include that region detection unit, ratio pressure recuperation valve, moment limit unloader and moment limits control valve；
Region detection unit, including detector unit and signal processing unit, in order to detect crane current operating region, the current operating region of crane is judged by detector unit detection crane rotation angle, after signal processing unit processes, pass to ratio pressure recuperation valve, control the setting pressure of ratio pressure recuperation valve；
Ratio pressure recuperation valve is proportional-type pressure-compensated valve, can be according to the electric signal continuous print of input, pro rata its pressure set points of real-time setting, in order to set up crane, there is when different working regions different maximum functional moment, it is achieved crane working region is mated with the maximum functional moment of permission；Ratio pressure recuperation valve the first hydraulic fluid port, ratio pressure recuperation valve the second hydraulic fluid port it is provided with outside ratio pressure recuperation valve, ratio pressure recuperation valve the first hydraulic fluid port is connected by explosion-proof valve, ratio the first luffing balanced valve and the first luffing rodless cavity, and ratio pressure recuperation valve the second hydraulic fluid port limits control valve the first hydraulic fluid port with moment and connects；
Moment limits unloader and moment limits control valve and collectively constitutes moment restriction valve, completes force moment of crane limitation function.
Described subregion stability control moment limits system, it is characterised in that: described moment limits and offers moment restriction unloader the first hydraulic fluid port outside unloader, moment limits unloader the second hydraulic fluid port, moment limits unloader the 3rd hydraulic fluid port, moment limits unloader the 4th hydraulic fluid port, moment limits unloader the 5th hydraulic fluid port, moment restriction unloader oil return opening, moment limit unloader control port.
Moment limits unloader the first hydraulic fluid port by pipeline and through the first luffing balanced valve and the connection of the first amplitude oil cylinder rodless cavity, moment limits unloader the second hydraulic fluid port by pipeline warp and through the first luffing balanced valve and the connection of the first amplitude oil cylinder rod chamber, moment limits unloader the 3rd hydraulic fluid port by pipeline and through the second luffing balanced valve and the connection of the second amplitude oil cylinder rodless cavity, moment limits unloader the 4th hydraulic fluid port by pipeline and through the second luffing balanced valve and the connection of the second amplitude oil cylinder rod chamber, moment is limited unloader the 5th hydraulic fluid port and is connected with telescopic oil cylinder rodless cavity by the flexible balanced valve of pipeline warp, moment is limited unloader oil return opening and is connected with fuel tank by pipeline.
Described subregion stability control moment limits system, it is characterized in that: described moment limits and is provided with moment restriction control valve the first hydraulic fluid port outside control valve, moment limits control valve the second hydraulic fluid port, moment limits control valve control port, and moment limits control valve control port, moment limits control valve oil return opening.
Moment is limited control valve the first hydraulic fluid port and is connected with pressure-compensated valve the second hydraulic fluid port by pipeline, moment limits control valve the second hydraulic fluid port and passes through pipeline and connect through the second luffing balanced valve and the first amplitude oil cylinder rod chamber, and moment is limited control valve control port and connected with telescopic oil cylinder rodless cavity by the flexible balanced valve of oil circuit warp；Moment is limited control valve oil return opening and is connected with fuel tank by pipeline；Moment is limited control valve control port and is connected with moment restriction unloader control port by pipeline.
Beneficial effect: a kind of proportional-type subregion stability control moment that this utility model provides limits system, has the advantage that
1, moment limits restriction system and can adjust the moment limits value of crane according to the maximum functional moment that crane job region allows, it is achieved subregion controls, and stability control performance is good, and safety is high；
2, moment limiting system realizes subregion control function, low cost based on simple controller and pressure-compensated valve, and element is few, and reliability is high；
3, the subregion of moment limiting system controls function, it is ensured that while crane safety, improve the utilization ratio of crane hoisting ability.
Accompanying drawing explanation
Fig. 1 is that proportional-type subregion of the present utility model stability control moment limits system；
Fig. 2 is the pressure-compensated valve schematic diagram in the stability control moment restriction system of proportional-type subregion of the present utility model；
Fig. 3 is Application Example working effect schematic diagram of the present utility model；
In figure: 1-the first luffing controls connection, A1-mono-luffing the first hydraulic fluid port, B1-mono-luffing the second hydraulic fluid port；
2-the second luffing controls connection, A2-bis-luffing the first hydraulic fluid port, B2-bis-luffing the second hydraulic fluid port；
3-extension and contraction control joins, and A3-stretches the first hydraulic fluid port, and B3-stretches the second hydraulic fluid port；
4-region detection unit；
5-ratio pressure recuperation valve, P6-ratio pressure recuperation valve the first hydraulic fluid port, P7-ratio pressure recuperation valve the second hydraulic fluid port；
6-explosion-proof valve；7-the first luffing balanced valve；8-the second luffing balanced valve；9-stretches balanced valve；
10-moment limits unloader, P1-moment limits unloader the first hydraulic fluid port, P2-moment limits unloader the second hydraulic fluid port, P3-moment limits unloader the 3rd hydraulic fluid port, and P4-moment limits unloader the 4th hydraulic fluid port, and P5-moment limits unloader the 5th hydraulic fluid port, hydraulic fluid port before P6-hydraulic control one-way valve valve, Pil1-hydraulic control one-way valve control port, T1-moment limits unloader oil return opening, and S1-moment limits unloader control port；
11-moment limits control valve, and P-moment limits control valve the first hydraulic fluid port, and I-moment limits control valve the second hydraulic fluid port, and Pil-moment limits control valve control port, and S-moment limits control valve control port, and T-moment limits control valve oil return opening.
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is further described.
As shown in Figure 1 to Figure 3, a kind of proportional-type subregion stability control moment limits system, and its stability controls functional realiey core parts part and includes that region detection unit 4, ratio pressure recuperation valve 5, moment limit unloader 10 and moment limits control valve 11；
Region detection unit 4, including detector unit and signal processing unit, in order to detect crane current operating region, the current operating region of crane is judged by detector unit detection crane rotation angle, thus send command adapted thereto signal after signal processing unit processes, pass to ratio pressure recuperation valve 5, control the setting pressure of ratio pressure recuperation valve 5.Specific works principle is: region detection unit 4 judges its working region by the detection current angle of revolution of crane, the signal processing unit of region detection unit 4 calculates electric (curtage) signal value size of required output according to testing result, this electric signal is transferred to ratio pressure recuperation valve 5, owing to the pressure size that sets of ratio pressure recuperation valve 5 follows the size variation of electric signal, therefore the electric signal of region detection unit 4 output may decide that the pressure set points of ratio pressure recuperation valve 5, such that it is able to control the first amplitude oil cylinder rodless cavity to moment to limit pressure required when unloader the first hydraulic fluid port P1 oil circuit is opened, then the maximum functional moment that this working region allows is set up, realize mating of the maximum functional moment that crane working region allows with this working region；
Ratio pressure recuperation valve 5 is proportional-type pressure-compensated valve, can be according to the electric signal continuous print of input, pro rata its pressure set points of real-time setting, in order to set up crane, there is when different working regions different maximum functional moment, it is achieved crane working region is mated with the maximum functional moment of permission.Ratio pressure recuperation valve 5 is outside is provided with ratio pressure recuperation valve the first hydraulic fluid port P6, ratio pressure recuperation valve the second hydraulic fluid port P7, ratio pressure recuperation valve the first hydraulic fluid port P6 is connected with the first luffing rodless cavity by explosion-proof valve 6, ratio the first luffing balanced valve 7, and ratio pressure recuperation valve the second hydraulic fluid port P7 limits control valve the first hydraulic fluid port P with moment and connects；
Moment limits unloader 10 and moment limits control valve 11 and collectively constitutes moment restriction valve, complete force moment of crane limitation function, wherein moment limits the outside moment that offers of unloader 10 and limits unloader the first hydraulic fluid port P1, moment limits unloader the second hydraulic fluid port P2, moment limits unloader the 3rd hydraulic fluid port P3, moment limits unloader the 4th hydraulic fluid port P4, moment limits unloader the 5th hydraulic fluid port P5, moment limits unloader oil return inlet T 1, moment limits unloader control port S1, moment limits the outside moment that is provided with of control valve 11 and limits control valve the first hydraulic fluid port P, moment limits control valve the second hydraulic fluid port I, moment limits control valve control port Pil, moment limits control valve control port S, moment limits control valve oil return inlet T；
Moment limits unloader the first hydraulic fluid port P1 and by pipeline and connects with the first amplitude oil cylinder rodless cavity through the first luffing balanced valve 7, moment limits unloader the second hydraulic fluid port P2 and by pipeline warp and connects with the first amplitude oil cylinder rod chamber through the first luffing balanced valve 7, moment limits unloader the 3rd hydraulic fluid port P3 and by pipeline and connects with the second amplitude oil cylinder rodless cavity through the second luffing balanced valve 8, moment limits unloader the 4th hydraulic fluid port P4 and by pipeline and connects with the second amplitude oil cylinder rod chamber through the second luffing balanced valve 8, moment is limited unloader the 5th hydraulic fluid port P5 and is connected with telescopic oil cylinder rodless cavity by the flexible balanced valve 9 of pipeline warp, moment is limited unloader oil return inlet T 1 and is connected with fuel tank by pipeline；
Moment is limited control valve the first hydraulic fluid port P and is connected with pressure-compensated valve the second hydraulic fluid port P7 by pipeline, moment limits control valve the second hydraulic fluid port I and by pipeline and connects with the first amplitude oil cylinder rod chamber through the second luffing balanced valve 8, and moment is limited control valve control port Pil and also connected with telescopic oil cylinder rodless cavity through flexible balanced valve 9 by oil circuit；Moment is limited control valve oil return inlet T and is connected with fuel tank by pipeline；Moment is limited control valve control port S and is connected with moment restriction unloader control port S1 by pipeline.
Embodiment: limit the folding arm lorry-mounted crane of system as embodiment being provided with proportional-type subregion stability control moment,
Signal processing unit by the maximum functional moment values input area detector unit 4 of the permission corresponding to the different working region in crane rotation region, signal processing unit calculates the force value produced by the first amplitude oil cylinder rodless cavity when maximum functional moment according to crane actual job operating mode and physical dimension thereof, force value according to the first amplitude oil cylinder rodless cavity calculates the size of the electric signal value of required output, and then may determine that the electric signal value that each real work region time domain detector unit 4 of crane should export.When the detector unit of region detection unit 4 detects the real work region of crane, region detection unit 4 signal processing part subdivision sends correspondingly sized electric signal, controls the pressure set points of ratio pressure recuperation valve 5 correspondingly sized.
nullWhen the real work moment of crane reaches the maximum functional moment that this working region allows，First amplitude oil cylinder rodless cavity pressure reaches the setup pressure value of ratio pressure recuperation valve 5，Ratio pressure recuperation valve 5 is opened，The pressure signal of the first amplitude oil cylinder rodless cavity is transferred to moment through explosion-proof valve 6 and ratio pressure recuperation valve 5 and limits control valve the first hydraulic fluid port P，Moment limits control valve 11 and is operated in unloading condition，Moment limits control valve the first hydraulic fluid port P and is transferred to moment restriction unloader control port S1 through moment restriction control valve control port S，Open moment and limit the hydraulic control one-way valve of unloader 10，Moment limits the off-load oil circuit of unloader 10 and is opened，First amplitude oil cylinder rodless cavity、First luffing rod chamber、Second luffing rod chamber、Second luffing rodless cavity、The fluid of telescopic oil cylinder rodless cavity limits unloader 10 through moment and flows back to fuel tank，Handling the first luffing control connection 1 makes the first luffing rise or fall、Second luffing controls connection 2 makes the second luffing rise or fall、Extension and contraction control connection 3 makes extending action，First luffing hoists、First luffing declines、Second luffing hoists、Second luffing declines、Stretch out pressure oil circuit by Low-pressure load discharge，Pressure cannot be set up，Limit the first luffing to rise、Fall，Second luffing rises、Fall and stretch out this five actions，It is achieved thereby that crane can only be in the normal work in the maximum functional moment boundary region allowed，Achieve the safeguard protection of crane.
When the real work moment of crane reaches the maximum functional moment that this working region allows, first amplitude oil cylinder rodless cavity pressure is less than the setup pressure value of ratio pressure recuperation valve 5, ratio pressure recuperation valve 5 cuts out, the oil circuit that first amplitude oil cylinder rodless cavity limits control valve the first hydraulic fluid port P through explosion-proof valve 6 and ratio pressure recuperation valve 5 to moment is cut off, moment limits control valve 11 and is operated in packing state, handling the first luffing control connection 1 makes the first luffing rise or fall, second luffing controls connection 2 makes the second luffing rise or fall, extension and contraction control connection 3 makes extending action, first luffing hoists, first luffing declines, second luffing hoists, second luffing declines, stretch out pressure oil circuit and can normally build pressure, crane can normally work.
In said process, the actual maximum functional moment that the maximum pressure that the first amplitude oil cylinder rodless cavity can allow for setting up can reach when determining crane work.When crane is operated in zones of different; depending on the maximum functional moment that the pressure set points size of ratio pressure recuperation valve 5 allows according to this region; then the maximum functional moment that the maximum pressure that the first amplitude oil cylinder rodless cavity can allow for setting up allows with this region is mated; therefore can realize crane in working region real work moment in the range of its maximum functional moment boundary region allowed, it is achieved the purpose of safeguard protection.
The above is only preferred implementation of the present utility model; it is noted that, for those skilled in the art; on the premise of without departing from this utility model principle, it is also possible to make some improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (5)
1. a proportional-type subregion stability control moment limits system, it is characterised in that: include that region detection unit, ratio pressure recuperation valve, moment limit unloader and moment limits control valve；
Region detection unit, including detector unit and signal processing unit, in order to detect crane current operating region, the current operating region of crane is judged by detector unit detection crane rotation angle, after signal processing unit processes, pass to ratio pressure recuperation valve, control the setting pressure of ratio pressure recuperation valve；
Ratio pressure recuperation valve is proportional-type pressure-compensated valve, can be according to the electric signal continuous print of input, pro rata its pressure set points of real-time setting, in order to set up crane, there is when different working regions different maximum functional moment, it is achieved crane working region is mated with the maximum functional moment of permission；Ratio pressure recuperation valve the first hydraulic fluid port, ratio pressure recuperation valve the second hydraulic fluid port it is provided with outside ratio pressure recuperation valve, ratio pressure recuperation valve the first hydraulic fluid port is connected by explosion-proof valve, ratio the first luffing balanced valve and the first luffing rodless cavity, and ratio pressure recuperation valve the second hydraulic fluid port limits control valve the first hydraulic fluid port with moment and connects；
Moment limits unloader and moment limits control valve and collectively constitutes moment restriction valve, completes force moment of crane limitation function.
Subregion the most according to claim 1 stability control moment limits system, it is characterised in that: described moment limits and offers moment restriction unloader the first hydraulic fluid port outside unloader, moment limits unloader the second hydraulic fluid port, moment limits unloader the 3rd hydraulic fluid port, moment limits unloader the 4th hydraulic fluid port, moment limits unloader the 5th hydraulic fluid port, moment restriction unloader oil return opening, moment limit unloader control port.
Subregion the most according to claim 2 stability control moment limits system, it is characterized in that: moment limits unloader the first hydraulic fluid port by pipeline and through the first luffing balanced valve and the connection of the first amplitude oil cylinder rodless cavity, moment limits unloader the second hydraulic fluid port by pipeline warp and through the first luffing balanced valve and the connection of the first amplitude oil cylinder rod chamber, moment limits unloader the 3rd hydraulic fluid port by pipeline and through the second luffing balanced valve and the connection of the second amplitude oil cylinder rodless cavity, moment limits unloader the 4th hydraulic fluid port by pipeline and through the second luffing balanced valve and the connection of the second amplitude oil cylinder rod chamber, moment is limited unloader the 5th hydraulic fluid port and is connected with telescopic oil cylinder rodless cavity by the flexible balanced valve of pipeline warp, moment is limited unloader oil return opening and is connected with fuel tank by pipeline.
Subregion the most according to claim 1 stability control moment limits system, it is characterized in that: described moment limits and is provided with moment restriction control valve the first hydraulic fluid port outside control valve, moment limits control valve the second hydraulic fluid port, moment limits control valve control port, and moment limits control valve control port, moment limits control valve oil return opening.
Subregion the most according to claim 4 stability control moment limits system, it is characterized in that: moment is limited control valve the first hydraulic fluid port and connected with pressure-compensated valve the second hydraulic fluid port by pipeline, moment limits control valve the second hydraulic fluid port and passes through pipeline and connect through the second luffing balanced valve and the first amplitude oil cylinder rod chamber, and moment is limited control valve control port and connected with telescopic oil cylinder rodless cavity by the flexible balanced valve of oil circuit warp；Moment is limited control valve oil return opening and is connected with fuel tank by pipeline；Moment is limited control valve control port and is connected with moment restriction unloader control port by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620233461.8U CN205500633U (en) | 2016-03-24 | 2016-03-24 | Proportion type divides regional stability control torque limiter system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620233461.8U CN205500633U (en) | 2016-03-24 | 2016-03-24 | Proportion type divides regional stability control torque limiter system |
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| CN205500633U true CN205500633U (en) | 2016-08-24 |
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| CN201620233461.8U Withdrawn - After Issue CN205500633U (en) | 2016-03-24 | 2016-03-24 | Proportion type divides regional stability control torque limiter system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645282A (en) * | 2016-03-24 | 2016-06-08 | 徐州徐工随车起重机有限公司 | Proportion type regional stability control moment limiting system |
-
2016
- 2016-03-24 CN CN201620233461.8U patent/CN205500633U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105645282A (en) * | 2016-03-24 | 2016-06-08 | 徐州徐工随车起重机有限公司 | Proportion type regional stability control moment limiting system |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160824 Effective date of abandoning: 20180316 |