CN103616555B - Potentiometer, engine hand throttle control system and crane - Google Patents
Potentiometer, engine hand throttle control system and crane Download PDFInfo
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- CN103616555B CN103616555B CN201310551140.3A CN201310551140A CN103616555B CN 103616555 B CN103616555 B CN 103616555B CN 201310551140 A CN201310551140 A CN 201310551140A CN 103616555 B CN103616555 B CN 103616555B
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Abstract
The invention relates to the technical field of operation control, and discloses a potentiometer, an engine hand throttle control system and a crane, which are used for realizing all-dimensional uninterrupted speed regulation of the potentiometer, improving the operation efficiency of operators and prolonging the service life of the potentiometer. The potentiometer includes: the resistor bodies are sequentially arranged in an annular even number, wherein the starting end of the resistor body with the odd number sequence and the tail end of the resistor body with the even number sequence are respectively connected with the positive electrode of the power supply, and the tail end of the resistor body with the odd number sequence and the starting end of the resistor body with the even number sequence are respectively connected with the negative electrode of the power supply; a brush which can slide on the surface of each resistor body and output the current potential signal. Compared with the prior art, the electric brush can realize 360-degree omnidirectional rotation, the engine rotating speed of the engineering machinery is controlled through the potentiometer, omnidirectional uninterrupted speed regulation can be realized, the operation is very convenient, the operating efficiency of operators is greatly improved, and the service life of the potentiometer is prolonged.
Description
Technical field
The present invention relates to operation and control technical field, particularly relate to a kind of potentiometer, a kind of manual accelerator of engine control system and a kind of crane.
Background technology
In prior art, for alleviating the feeling of fatigue of operator, the mode that increasing crane employing foot throttle and hand throttle switch mutually is to control engine speed, such as, crane operator in the process of moving control engine speed by foot throttle, and crane operator when carrying out lift heavy operation control engine speed by hand throttle.The structure of foot throttle pedal 10 and hand throttle potentiometer 20 is respectively as illustrated in figs. ia and ib.
The output signal of hand throttle potentiometer 10 is linear with engine speed, as shown in Figure 1 b, when knob is threaded to scale " 0 ", hand throttle aperture is minimum, and corresponding engine speed is minimum, when knob is threaded to scale " 10 ", hand throttle aperture is maximum, and corresponding engine speed is maximum.
Prior art has a drawback in that, the knob of hand throttle potentiometer 10 has certain rotation dead band when rotated, 360 degree of omniranges can not be realized rotate, that is: when knob is threaded to scale " 0 ", if needing to increase engine speed, can only turn clockwise knob and can not rotary knob counterclockwise, when knob is threaded to scale " 10 ", if needing to reduce engine speed, can only rotary knob and the knob that can not turn clockwise counterclockwise.Visible, existing hand throttle potentiometer cannot realize comprehensive uninterrupted speed governing, regulates operation more inconvenient, is unfavorable for improving the operating efficiency of operator, and, hand throttle potentiometer very easily causes because of the improper operation of operator damaging.In comprising other similar application scene potentiometric, there is also such problem.
Summary of the invention
Embodiments provide a kind of potentiometer, a kind of manual accelerator of engine controls system and a kind of crane, in order to realize potentiometric comprehensive uninterrupted speed governing, improves the operating efficiency of operator and extends potentiometric service life.
The potentiometer that the embodiment of the present invention provides, including:
Being arranged in order even number resistive element in the form of a ring, wherein, the top of odd number tagmeme resistive element is connected with the positive pole of power supply respectively with the end of even number tagmeme resistive element, and the end of odd number tagmeme resistive element is connected with the negative pole of power supply respectively with the top of even number tagmeme resistive element；
Can slide on each resistive element surface and export the brush of current electric potential signal.
In technical solution of the present invention, even number resistive element is arranged in order in the form of a ring, brush can slide on each resistive element surface and export current electric potential signal, compared to prior art, brush can realize 360 degree of omniranges and rotate, and is controlled the engine speed of engineering machinery by this potentiometer, comprehensive uninterrupted speed governing can be realized, operation is very easy, not only substantially increases the operating efficiency of operator, and extends potentiometric service life.
Preferably, the length of each resistive element is equal, and/or, the resistance value of each resistive element unit length is equal.The length of each resistive element is equal makes brush rotation Cheng Xiangtong on each resistive element, the resistance value of each resistive element unit length is equal, the output signal making brush is zig-zag, these, be all conducive to operator carry out skilled operation and control engine speed accurately.
Preferably, potentiometer also includes: the 360 degree graduated discs corresponding with arrangement even number resistive element in the form of a ring, and the knob that can rotate along 360 degree of graduated discs 360 degree that drive brush slides on resistive element surface.
Preferably, the quantity of resistive element is six.
Preferably, potentiometer also includes: the tone generator being connected with described brush signal, sends prompt tone during for reaching crest value or valley value at electric potential signal.The rotating speed that so can point out operator's electromotor has reached maximum or minima, is conducive to improving the accuracy of operation.
The embodiment of the present invention additionally provides a kind of manual accelerator of engine and controls system, including:
Potentiometer as described in aforementioned any technology scheme；
Controller, is connected with described potentiometer signal, is used for according to described current electric potential signal, and the corresponding relation of electric potential signal and engine speed, and output engine speed controling signal is to electromotor.
The engine speed of engineering machinery is controlled, it is possible to achieve comprehensive uninterrupted speed governing, operation is very easy, not only substantially increases the operating efficiency of operator, and extends potentiometric service life by described potentiometer.
Preferably, described controller is connected by Controller Area Network BUS signal with the engine control module of described electromotor.
The embodiment of the present invention additionally provides a kind of crane, controls system including the manual accelerator of engine described in aforementioned any technology scheme.The engine speed of crane is controlled, it is possible to achieve comprehensive uninterrupted speed governing, operation is very easy, not only substantially increases the operating efficiency of operator, and extends potentiometric service life by described potentiometer.
Preferably, crane also includes engine foot throttle control system.Crane operator in the process of moving control engine speed by foot throttle, crane operator when carrying out lift heavy operation control engine speed by hand throttle, foot throttle and hand throttle can switch mutually, are so conducive to alleviating the feeling of fatigue of operator.
Optionally, described crane is off-the-highway tire formula crane.
Accompanying drawing explanation
Fig. 1 a is the structural representation of foot throttle pedal；
Fig. 1 b is the potentiometric structural representation of existing hand throttle；
The potentiometric structural representation that Fig. 2 provides for the embodiment of the present invention；
Fig. 3 controls the structural representation of system for the manual accelerator of engine that one embodiment of the invention provides；
Fig. 4 is the electric potential signal waveform diagram of the output of potentiometer shown in Fig. 2；
Fig. 5 controls the structural representation of system for the manual accelerator of engine that another embodiment of the present invention provides.
Accompanying drawing labelling:
10-foot throttle pedal 20-hand throttle pedal 30-resistive element
31-brush 20 '-potentiometer 40-controller
50-electromotor 51-ECM
Detailed description of the invention
In order to realize potentiometric comprehensive uninterrupted speed governing, improve the operating efficiency of operator and extend potentiometric service life, embodiments providing a kind of potentiometer, a kind of manual accelerator of engine control system and a kind of crane.In potentiometric technical scheme, even number resistive element is arranged in order in the form of a ring, brush can slide on each resistive element surface and export current electric potential signal, compared to prior art, brush can realize 360 degree of omniranges and rotate, and is controlled the engine speed of engineering machinery by this potentiometer, comprehensive uninterrupted speed governing can be realized, operation is very easy, not only substantially increases the operating efficiency of operator, and extends potentiometric service life.Below with specific embodiment and be described with reference to the accompanying drawings the present invention.
As in figure 2 it is shown, the potentiometer that the embodiment of the present invention provides, including:
It is arranged in order even number resistive element 30 in the form of a ring, wherein, the top of odd number tagmeme resistive element is connected with the positive pole of power supply respectively with the end of even number tagmeme resistive element, and the end of odd number tagmeme resistive element is connected with the negative pole of power supply respectively with the top of even number tagmeme resistive element；
Can slide on each resistive element 30 surface and export the brush 31 of current electric potential signal.
The potentiometer that the embodiment of the present invention provides can be applicable to manual accelerator of engine and controls in system and other similar control system.Resistive element 30 is preferably entwined by resistance wire, it is also possible to can change the structure of resistance value with the movement of brush for other.The number needs of resistive element 30 to be even number, but particular number is not limit, for instance, it is possible to it is two, four, six or eight etc., it is possible to be designed according to the degree of regulation that potentiometric specification and needs reach.With any one resistive element for starting point along arranging clockwise or counterclockwise, in the embodiment shown in Fig. 2, six resistive elements 30 can be comprised, are arranged in order along clockwise direction." top " and " end " both can define along clockwise direction, it is also possible to defines in the counterclockwise direction, is not specifically limited here.In Fig. 2, assuming that the top of A1, A2, A3, A4, A5 and A6 respectively each resistive element, the end of B1, B2, B3, B4, B5 and B6 respectively each resistive element, then A1, A3, A5, B2, B4, B6 are connected with the positive pole of DC source, and A2, A4, A6, B1, B3, B5 are connected with the negative pole of DC source.
Preferably, the length of each resistive element 30 is equal；Further, the resistance value of each resistive element 30 unit length is equal.The length of each resistive element 30 is equal makes the brush 31 rotation Cheng Xiangtong on each resistive element 30, the resistance value of each resistive element 30 unit length is equal, the output signal making brush 31 is zig-zag, these, all be conducive to operator quickly to grasp brush 31 and revolve the corresponding relation of journey and engine speed, to carry out skilled operation and to control engine speed accurately.In embodiment illustrated in fig. 2, six resistive elements 30 are by annulus six decile, and the resistance value of each resistive element 30 unit length is equal.
Potentiometer surface is typically provided with graduated disc and knob (not shown), and the brush driven within potentiometer is slided by rotary knob on resistive element surface.In the prior art, potentiometric graduated disc non-360 degree graduated disc, the rotation of knob has certain dead band, and in this programme, graduated disc can be designed as 360 degree of graduated discs, 360 degree of graduated discs are corresponding with arrangement even number resistive element in the form of a ring, when knob uninterruptedly rotates along graduated disc 360 degree, drive brush arranging 360 degree of even number resistive element surface slip in the form of a ring.
As a preferred embodiment, potentiometer may also include the tone generator being connected with brush signal, sends prompt tone during for reaching crest value or valley value at electric potential signal.The rotating speed that so can point out operator's electromotor has reached maximum or minima, is conducive to improving the accuracy of operation.
In technical solution of the present invention, even number resistive element 30 is arranged in order in the form of a ring, brush 31 can slide on each resistive element 30 surface and export current electric potential signal, compared to prior art, brush 31 can realize 360 degree of omniranges and rotate, and is controlled the engine speed of engineering machinery by this potentiometer, comprehensive uninterrupted speed governing can be realized, operation is very easy, not only substantially increases the operating efficiency of operator, and extends potentiometric service life.
As it is shown on figure 3, the embodiment of the present invention additionally provides a kind of manual accelerator of engine controls system, including:
The potentiometer 20 ' of aforementioned any embodiment；
Controller 40, is connected with potentiometer 20 ' signal, is used for according to current electric potential signal, and the corresponding relation of electric potential signal and engine speed, and output engine speed controling signal is to electromotor 50.
To comprise the control system of potentiometric manual accelerator of engine shown in Fig. 2, its operation principle is as follows:
When brush 31 is clockwise slided into B1 position by A1 position, the electric potential signal of output by maximum change to minimum, the rotating speed of corresponding electromotor also for by maximum change to minimum；
When brush 31 is clockwise slided into B2 position by A2 position, the electric potential signal of output by minimum change to maximum, the rotating speed of corresponding electromotor also for by minimum change to maximum；
When brush 31 is clockwise slided into B3 position by A3 position, the electric potential signal of output by maximum change to minimum, the rotating speed of corresponding electromotor also for by maximum change to minimum；
When brush 31 is clockwise slided into B4 position by A4 position, the electric potential signal of output by minimum change to maximum, the rotating speed of corresponding electromotor also for by minimum change to maximum；
When brush 31 is clockwise slided into B5 position by A5 position, the electric potential signal of output by maximum change to minimum, the rotating speed of corresponding electromotor also for by maximum change to minimum；
When brush 31 is clockwise slided into B6 position by A6 position, the electric potential signal of output by minimum change to maximum, the rotating speed of corresponding electromotor also for by minimum change to maximum.
When brush 31 slides in the counterclockwise direction on each resistive element 30 surface, the variation tendency of the electric potential signal of output and corresponding engine speed is then just the opposite.
Can be seen that from above procedure, no matter brush 31 slid clockwise or slide counterclockwise, one continuous print sawtooth signal (as shown in Figure 4) all can be provided, can be seen that from this waveform, when the electric potential signal of brush 31 output in the same direction changes to maximum (or minimum), continue toward direction sliding brush 31, the electric potential signal of output taper off again (being incremented by) change.
In specific embodiment shown in Fig. 2, the resistance of each resistive element 30 is 4.7K Ω (kilo-ohm), when brush 31 slides on resistive element 30, the electric potential signal of output is minimum for 0V, the minimum speed of corresponding electromotor is 800rpm(rev/min), when brush 31 slides on resistive element 30, the electric potential signal of output is 5V to the maximum, the maximum (top) speed of corresponding electromotor is 2500rpm, and the electric potential signal of brush 31 output is linear with the rotating speed of electromotor.
Controller 40 specifically can adopt PLC(ProgrammableLogicController, Programmable Logic Controller, is called for short PLC).As it is shown in figure 5, the ECM51(EngineControlModule of controller 40 and electromotor, engine control module, be called for short ECM) between preferably by CAN(ControllerAreaNetwork, controller local area network, be called for short CAN) bus signals connects.Communicating according to control of engine speed, (american car Engineering society SAE proposed J1939 agreement in 2000 to J1939 agreement, hereafter this agreement becomes lorry and the universal standard of passenger vehicle middle controller LAN) content, controller 40 is after receiving the electric potential signal that potentiometer 20 sends, the rotary speed data of electromotor is packaged packing by the rotation speed relation according to electric potential signal with electromotor, sent to the ECM51 of electromotor by CAN, and then realize the rotating speed of hand throttle control electromotor.
Therefore, program manual accelerator of engine controls system can realize the uninterrupted speed governing of electromotor by potentiometer, operation is very easy, not only substantially increase the operating efficiency of operator, and there is no dead point owing to potentiometric brush slides, service life is longer, and the functional reliability that this manual accelerator of engine controls system is also higher.
The embodiment of the present invention additionally provides a kind of crane, and the manual accelerator of engine including aforementioned any embodiment controls system.The type of crane is not limit, for instance can be off-the-highway tire formula crane etc..Controlled the engine speed of crane by potentiometer, it is possible to achieve the uninterrupted speed governing of electromotor, be conducive to improving the operating efficiency of hoisting operation.
Preferably, crane also includes engine foot throttle control system.Crane operator in the process of moving control engine speed by foot throttle, crane operator when carrying out lift heavy operation control engine speed by hand throttle, foot throttle and hand throttle can switch mutually, are so conducive to alleviating the feeling of fatigue of operator.
Obviously, the present invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art.So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a potentiometer, it is characterised in that including:
Being arranged in order even number resistive element in the form of a ring, wherein, the top of odd number tagmeme resistive element is connected with the positive pole of power supply respectively with the end of even number tagmeme resistive element, and the end of odd number tagmeme resistive element is connected with the negative pole of power supply respectively with the top of even number tagmeme resistive element；
Can slide on each resistive element surface and export the brush of current electric potential signal.
2. potentiometer as claimed in claim 1, it is characterised in that the length of each resistive element is equal, and/or, the resistance value of each resistive element unit length is equal.
3. potentiometer as claimed in claim 1, it is characterized in that, also include: the 360 degree graduated discs corresponding with described arrangement even number resistive element in the form of a ring, and drive the knob that can rotate along described graduated disc 360 degree that described brush slides on described resistive element surface.
4. potentiometer as claimed in claim 1, it is characterised in that the quantity of described resistive element is six.
5. the potentiometer as described in any one of Claims 1-4, it is characterised in that also include:
The tone generator being connected with described brush, sends prompt tone during for reaching crest value or valley value at electric potential signal.
6. a manual accelerator of engine controls system, it is characterised in that including:
Potentiometer as described in any one of Claims 1 to 5；
Controller, is connected with described potentiometer, is used for according to described current electric potential signal, and the corresponding relation of electric potential signal and engine speed, and output engine speed controling signal is to electromotor.
7. manual accelerator of engine as claimed in claim 6 controls system, it is characterised in that described controller is connected by Controller Area Network BUS with the engine control module of described electromotor.
8. a crane, it is characterised in that include manual accelerator of engine as claimed in claims 6 or 7 and control system.
9. crane as claimed in claim 8, it is characterised in that also include engine foot throttle control system.
10. crane as claimed in claim 8 or 9, it is characterised in that described crane is off-the-highway tire formula crane.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310551140.3A CN103616555B (en) | 2013-11-07 | 2013-11-07 | Potentiometer, engine hand throttle control system and crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310551140.3A CN103616555B (en) | 2013-11-07 | 2013-11-07 | Potentiometer, engine hand throttle control system and crane |
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| Publication Number | Publication Date |
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| CN103616555A CN103616555A (en) | 2014-03-05 |
| CN103616555B true CN103616555B (en) | 2016-06-29 |
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| CN201310551140.3A Active CN103616555B (en) | 2013-11-07 | 2013-11-07 | Potentiometer, engine hand throttle control system and crane |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0620568A2 (en) * | 1993-04-15 | 1994-10-19 | Matsushita Electric Industrial Co., Ltd. | Rotary electronic device |
| CN2284442Y (en) * | 1996-08-27 | 1998-06-17 | 王英 | Step potentiometer |
| CN1223941A (en) * | 1997-06-18 | 1999-07-28 | 伊利诺斯工具工程有限公司 | Accelerator module |
| CN201655452U (en) * | 2010-05-10 | 2010-11-24 | 株洲威森机车配件有限公司 | Precision rotary oil-immersed potentiometer for trainman controller |
| CN202138494U (en) * | 2010-06-15 | 2012-02-08 | Cts公司 | Throttle twist grip controller with ring potentiometer assembly |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101099193B1 (en) * | 2004-12-07 | 2011-12-27 | 히다찌 겐끼 가부시키가이샤 | Electric operating device |
-
2013
- 2013-11-07 CN CN201310551140.3A patent/CN103616555B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0620568A2 (en) * | 1993-04-15 | 1994-10-19 | Matsushita Electric Industrial Co., Ltd. | Rotary electronic device |
| CN2284442Y (en) * | 1996-08-27 | 1998-06-17 | 王英 | Step potentiometer |
| CN1223941A (en) * | 1997-06-18 | 1999-07-28 | 伊利诺斯工具工程有限公司 | Accelerator module |
| CN201655452U (en) * | 2010-05-10 | 2010-11-24 | 株洲威森机车配件有限公司 | Precision rotary oil-immersed potentiometer for trainman controller |
| CN202138494U (en) * | 2010-06-15 | 2012-02-08 | Cts公司 | Throttle twist grip controller with ring potentiometer assembly |
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| CN103616555A (en) | 2014-03-05 |
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Address after: Yuelu District, Hunan province No. South Road, silver basin, No. 361 Applicant after: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. Address before: 410007 ZOOMLION grand pond Industrial Park, Yuanda Road, Changsha economic and Technological Development Zone, Hunan 2, China Applicant before: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. |
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