CN2821220Y - Automatic controller for concrete conveying pump constant power - Google Patents
Automatic controller for concrete conveying pump constant power Download PDFInfo
- Publication number
- CN2821220Y CN2821220Y CN 200520061079 CN200520061079U CN2821220Y CN 2821220 Y CN2821220 Y CN 2821220Y CN 200520061079 CN200520061079 CN 200520061079 CN 200520061079 U CN200520061079 U CN 200520061079U CN 2821220 Y CN2821220 Y CN 2821220Y
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- oil pump
- main oil
- rod
- con
- connecting rod
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Abstract
The utility model relates to an automatic controller of constant power for a concrete conveying pump, which comprises a programmable controller, an electric loop, and a main oil pump, wherein the main oil pump is mechanically connected with a transmission shaft of a motor; the main oil pump comprises a link mechanism, a proportional electromagnet, a movable plunger piston mechanism, an overflow valve, and an inclined disk of the main oil pump; a link oil cylinder, the proportional electromagnet, the overflow valve, and an oil circuit of a plunger piston oil cylinder are respectively communicated, and a closed oil circuit is formed. The electric loop comprises a current transmitter, an analog-to-digital converting module, a digital-to-analog converting module, a current proportional amplifier, the proportional electromagnet, and the main oil pump which are orderly connected; the current transmitter is conducted with sensing connection with a main power source, and the main power source is electrically connected with the motor. The utility model has the advantages of low cost, stable operation, very low failure rates, simple structure, easy maintenance, and low cost. The utility model farthest displays the integral efficiency of the device and efficiently avoids damage to electric and hydraulic devices because of excess load and automatically controls the constant power of the concrete conveying pump.
Description
Technical field:
The utility model relates to concrete conveyer in the construction implement, particularly relates to a kind of closed-loop control device that transmission and concrete transmission pump hydraulic system main oil pump power is carried out automatic constant control, belongs to the control technique field of electric hydraulic.
Background technique:
Concrete pump is to rely on main oil pump that power is provided, and utilizes the back and forth movement of piston in the transmission and concrete transmission cylinder, by the switching of distributing valve, makes the concrete in the cylinder barrel deliver to the construction part that need build through piping.Concrete conveying whether continuously steadily and the power that meets construction requirement and bring into play transfer pump fully make concrete quantity delivered reach maximum, depend primarily on the adjusting of main oil pump discharge capacity.The variation of main oil pump discharge capacity is to rely on the inner swash plate of main oil pump angle of inclination to realize, therefore, the angle of inclination of correctly adjusting the main oil pump swash plate is to give full play to main oil pump power, make the transmission and concrete transmission amount reach maximum key factor.Be that angle of inclination according to operating mode manual tune main oil pump swash plate is to reach the purpose of regulating the main oil pump discharge capacity at present both at home and abroad to the controlling method of concrete pump main oil pump discharge capacity, its shortcoming is that the quality of regulating effect is relevant with operator's experience, personal factor is too big, and because concrete unstability and concrete label, fed distance, delivery head, the continuous variation of operating voltage or the like factor, all the discharge capacity to main oil pump causes continuous influence, also can cause simultaneously the excess current of motor and various control apparatuses or electric current too low, can not bring into play the efficient of various power equipments entirely truely.
Summary of the invention:
The purpose of the permanent power automatic controller of the utility model concrete pump is to using motor or diesel engine to provide a kind of swash plate angle of inclination that can make according to the variation of field working conditions constantly to adjust automatically to realize the controlling permanent power of concrete pump automatically as the main oil pump of the concrete pump of power.
The permanent power automatic controller of a kind of concrete pump comprises programmable controller, electric loop, main oil pump, the transmission shaft mechanical connection of main oil pump and motor.Main oil pump comprises linkage mechanism, proportion electro-magnet, movable plunger mechanism, relief valve and main oil pump swash plate, linkage mechanism comprises the con-rod only of the T type that can move back and forth and the vertical component effect of con-rod only in the connecting rod oil cylinder, the T prefix end of con-rod only places in the connecting rod oil cylinder, one end butt con-rod only of main oil pump swash plate is away from an end of T prefix, between connecting rod T prefix end and connecting rod oil cylinder, be provided with first spring, be provided with second spring parallel with first spring between the vertical component effect of proportion electro-magnet and con-rod only, the second end butt movable plunger of main oil pump swash plate is away from an end of oil cylinder; Comprise that in programmable controller two expansion modules are analog-to-digital conversion module and D/A converter module, are provided with current signal collection and comparison program at analog-to-digital conversion module and D/A converter module inside; The oil circuit of connecting rod oil cylinder, proportion electro-magnet, relief valve and plunger cylinder is communicated with successively and forms closed circuit; Electrical circuit comprises current transducer, analog-to-digital conversion module, D/A converter module, current ratio amplifier, proportion electro-magnet, the main oil pump that is electrically connected successively, and current transducer is connected with the primary power supply induction, and primary power supply and motor are electrically connected.This device hardware is selected existing modular electrical part for use, and sequence of movement is carried out by software control.The technical program is used for the permanent power automatic controller of concrete pump of electric drive main oil pump motor, detects the main oil pump motor rated current of setting in electric current and the program by the main oil pump motor constantly by current transducer and compares permanent power realization automatic controller to concrete pump.
As another technological scheme of the present utility model, the permanent power automatic controller of a kind of concrete pump comprises programmable controller, electric loop, main oil pump, the Flywheel disc mechanical connection of main oil pump and diesel engine; Described main oil pump comprises linkage mechanism, proportion electro-magnet, movable plunger mechanism, relief valve and main oil pump swash plate, linkage mechanism comprises the con-rod only of the T type that can move back and forth and the vertical component effect of con-rod only in the connecting rod oil cylinder, the T prefix end of con-rod only places in the connecting rod oil cylinder, one end butt con-rod only of main oil pump swash plate is away from an end of T prefix, between connecting rod T prefix end and connecting rod oil cylinder, be provided with first spring, be provided with second spring parallel with first spring between the vertical component effect of proportion electro-magnet and con-rod only, the second end butt movable plunger of main oil pump swash plate is away from an end of oil cylinder; Comprise that in programmable controller two expansion modules are analog-to-digital conversion module and D/A converter module, are provided with current signal collection and comparison program at analog-to-digital conversion module and D/A converter module inside; The oil circuit of connecting rod oil cylinder, proportion electro-magnet, relief valve and plunger cylinder is communicated with successively and forms closed circuit; Electrical circuit comprises rotating speed inductor, rotating speed transmitter, analog-to-digital conversion module, D/A converter module, current ratio amplifier, proportion electro-magnet, the main oil pump that is electrically connected successively, and the rotating speed inductor is connected with the Flywheel disc induction of diesel engine.This device hardware is selected existing modular electrical part for use, and sequence of movement is carried out by software control.It is that the permanent power of concrete pump of motivational drive main oil pump is controlled automatically that the technical program is used for the diesel engine, and the diesel engine rated speed of setting in the rotating speed that detects diesel engine by the rotating speed transmitter constantly and the program compares the permanent power of concrete pump is realized controlling automatically.
Permanent power automatic controller hardware of the present utility model is selected existing modular electrical part for use, sequence of movement is carried out by software control, have that cost is low, working stability, extremely low, the simple in structure easy-maintaining of rate of fault, low cost and the whole efficiency of having given play to equipment to greatest extent avoided effectively again because of excess load to the damage of electric and hydraulic pressure components and parts with realize the advantage of the permanent power of control concrete pump automatically.
Description of drawings:
Fig. 1 is the hydraulic schematic diagram of the permanent power automatic controller of the utility model concrete pump.
Fig. 2 is the electrical schematic diagram of the utility model embodiment 1 with the permanent power automatic controller of concrete pump of electric drive main oil pump motor.
Fig. 3 is that the utility model embodiment 2 is the electrical schematic diagram of the permanent power automatic controller of concrete pump of motivational drive main oil pump with the diesel engine.
Embodiment:
As depicted in figs. 1 and 2, the permanent power automatic controller of a kind of concrete pump comprises programmable controller, electric loop, main oil pump 1, transmission shaft 21 mechanical connections of main oil pump 1 and motor.It is the main oil pump of A11V0260/U2 that main oil pump can be selected German BOSCH-REXROTH model for use.Main oil pump 1 comprises linkage mechanism, proportion electro-magnet 2, movable plunger mechanism 3 and main oil pump swash plate 4; Linkage mechanism comprises the con-rod only 8 of the T type that can move back and forth and the vertical component effect 9 of con-rod only 8 in the connecting rod oil cylinder, the T prefix end 10 of con-rod only 8 places in the connecting rod oil cylinder 11, first end, the 13 butt con-rod onlys 8 of main oil pump swash plate 4 are provided with first spring 12 away from an end of connecting rod T prefix end 10 at connecting rod prefix end 10 and 11 of connecting rod oil cylinders; Be provided with second spring 20 parallel with first spring 12 between the vertical component effect 9 of proportion electro-magnet 2 and con-rod only 8, second end, the 14 butt movable plungers of main oil pump swash plate 4 are away from an end of oil cylinder; Comprise that in programmable controller two expansion modules are analog-to-digital conversion module 6 and D/A converter module 7, are provided with current signal collection and comparison program at analog-to-digital conversion module 6 and D/A converter module 7 inside; Electrical circuit comprises current transducer 15, analog-to-digital conversion module 6, D/A converter module 7, current ratio amplifier 16, proportion electro-magnet 2, the main oil pump 1 that is electrically connected successively, current transducer 15 is connected with primary power supply 20 inductions, and primary power supply 20 is electrically connected with motor 21; The oil circuit of connecting rod oil cylinder 11, proportion electro-magnet 2, pilot operated compound relief valve 19 and plunger cylinder is communicated with successively and forms closed circuit.
The rated current that the highest setting electric current of concrete pump electrical system is a main oil pump motor 1, current transducer 15 is housed in the main circuit, press the pumping start button behind the main electric motor starting, concrete pump begins the pumping operation, current transducer 15 beginnings detect the electric current by main oil pump motor 1 constantly, and main oil pump motor 1 rated current of setting in detected electric current input analog-to-digital conversion module 6 and the program compared, if current transducer 15 detected electric currents are lower than the rating value of setting is then exported 4-20mA by programming instruction D/A converter module 7 adjustment electric current, zoom into the proportion electro-magnet 2 that flows to behind the 200-600mA electric current on the main oil pump 1 through proportional amplifier, proportion electro-magnet 2 corresponding actions and increase the angle of inclination of swash plate by hydraulic pressure and mechanical mechanism under the effect of electric current, thereby strengthen the discharge capacity of main oil pump 1, the output power of raising system makes the electric current by main oil pump motor 1 reach rating value.
Otherwise, if current transducer 15 detected electric currents are higher than the rating value of setting is then exported 4-20mA by programming instruction D/A converter module 7 adjustment electric current, zoom into the proportion electro-magnet 2 that flows to behind the 200-600mA electric current on the main oil pump 1 through proportional amplifier, proportion electro-magnet 2 corresponding actions and reduce the angle of inclination of swash plate by hydraulic pressure and mechanical mechanism under the effect of electric current, thereby reduce the discharge capacity of main oil pump 1, the output power of reduction system, make electric current be reduced to rating value by main oil pump motor 1.So moving in circles guarantees that the electric current by main oil pump motor 1 remains at rating value, that is the output power of whole system remains on rating value, makes equipment always work in the optimum state.
As shown in Figure 3, this programme is the motivational drive main oil pump with the diesel engine as different from Example 1, the Flywheel disc mechanical connection of main oil pump and diesel engine, the rotating speed inductor is connected with Flywheel disc 22 inductions of diesel engine, speed probe 18 is electrically connected with rotating speed transmitter 17, and rotating speed transmitter 17 is electrically connected with analog-to-digital conversion module 6 again.
The highest setting rotating speed of concrete pump diesel engine is a rated speed, detect the rotating speed of diesel engine with speed probe 1, change the 4-20m electric current into through the rotating speed transmitter, input PLC compares judgement and periodically adjusts the angle of joining oily swash plate, make diesel engine keep constant rotating speed, promptly give full play to the anti-only diesel engine excess load again of utilization rate of diesel engine.
Claims (2)
1, the permanent power automatic controller of a kind of concrete pump comprises programmable controller, electric loop, main oil pump, the transmission shaft mechanical connection of main oil pump and motor; Described main oil pump comprises linkage mechanism, proportion electro-magnet, movable plunger mechanism, relief valve and main oil pump swash plate, linkage mechanism comprises the con-rod only of the T type that can move back and forth and the vertical component effect of con-rod only in the connecting rod oil cylinder, the T prefix end of con-rod only places in the connecting rod oil cylinder, one end butt con-rod only of main oil pump swash plate is away from an end of T prefix, between connecting rod T prefix end and connecting rod oil cylinder, be provided with first spring, be provided with second spring parallel with first spring between the vertical component effect of proportion electro-magnet and con-rod only, the second end butt movable plunger of main oil pump swash plate is away from an end of oil cylinder; Comprise that in programmable controller two expansion modules are analog-to-digital conversion module and D/A converter module, are provided with current signal collection and comparison program at analog-to-digital conversion module and D/A converter module inside; The oil circuit of connecting rod oil cylinder, proportion electro-magnet, relief valve and plunger cylinder is communicated with successively and forms closed circuit, it is characterized in that: electrical circuit comprises current transducer, analog-to-digital conversion module, D/A converter module, current ratio amplifier, proportion electro-magnet, the main oil pump that is electrically connected successively, current transducer is connected with the primary power supply induction, and primary power supply is connected with electric electromechanics.
2, the permanent power automatic controller of a kind of concrete pump comprises programmable controller, electric loop, main oil pump, the Flywheel disc mechanical connection of main oil pump and diesel engine; Described main oil pump comprises linkage mechanism, proportion electro-magnet, movable plunger mechanism, relief valve and main oil pump swash plate, linkage mechanism comprises the con-rod only of the T type that can move back and forth and the vertical component effect of con-rod only in the connecting rod oil cylinder, the T prefix end of con-rod only places in the connecting rod oil cylinder, one end butt con-rod only of main oil pump swash plate is away from an end of T prefix, between connecting rod T prefix end and connecting rod oil cylinder, be provided with first spring, be provided with second spring parallel with first spring between the vertical component effect of proportion electro-magnet and con-rod only, the second end butt movable plunger of main oil pump swash plate is away from an end of oil cylinder; Comprise that in programmable controller two expansion modules are analog-to-digital conversion module and D/A converter module, are provided with current signal collection and comparison program at analog-to-digital conversion module and D/A converter module inside; The oil circuit of connecting rod oil cylinder, proportion electro-magnet, relief valve and plunger cylinder is communicated with successively and forms closed circuit, it is characterized in that: electrical circuit comprises rotating speed inductor, rotating speed transmitter, analog-to-digital conversion module, D/A converter module, current ratio amplifier, proportion electro-magnet, the main oil pump that is electrically connected successively, and the rotating speed inductor is connected with the Flywheel disc induction of diesel engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520061079 CN2821220Y (en) | 2005-07-14 | 2005-07-14 | Automatic controller for concrete conveying pump constant power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520061079 CN2821220Y (en) | 2005-07-14 | 2005-07-14 | Automatic controller for concrete conveying pump constant power |
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| CN2821220Y true CN2821220Y (en) | 2006-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200520061079 Expired - Fee Related CN2821220Y (en) | 2005-07-14 | 2005-07-14 | Automatic controller for concrete conveying pump constant power |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828942A (en) * | 2011-06-16 | 2012-12-19 | 中联重科股份有限公司 | Constant-power control device and method for variable displacement pump and concrete pumping installation |
| CN107489601A (en) * | 2017-09-30 | 2017-12-19 | 徐州翔凯重工科技有限公司 | A kind of concrete pumping equipment control method for engine speed |
| CN108561301A (en) * | 2018-03-23 | 2018-09-21 | 河南职业技术学院 | The control method and control device of concrete pumping equipment |
| EP4180660A1 (en) * | 2021-11-15 | 2023-05-17 | Putzmeister Engineering GmbH | System and method for operating a system |
-
2005
- 2005-07-14 CN CN 200520061079 patent/CN2821220Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828942A (en) * | 2011-06-16 | 2012-12-19 | 中联重科股份有限公司 | Constant-power control device and method for variable displacement pump and concrete pumping installation |
| CN102828942B (en) * | 2011-06-16 | 2015-11-18 | 中联重科股份有限公司 | The constant power control device of variable displacement pump, method and the concrete pump set |
| CN107489601A (en) * | 2017-09-30 | 2017-12-19 | 徐州翔凯重工科技有限公司 | A kind of concrete pumping equipment control method for engine speed |
| CN108561301A (en) * | 2018-03-23 | 2018-09-21 | 河南职业技术学院 | The control method and control device of concrete pumping equipment |
| EP4180660A1 (en) * | 2021-11-15 | 2023-05-17 | Putzmeister Engineering GmbH | System and method for operating a system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060927 |