CN103883574A - Hydraulic multipoint synchronous control system - Google Patents
Hydraulic multipoint synchronous control system Download PDFInfo
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- CN103883574A CN103883574A CN201210558877.3A CN201210558877A CN103883574A CN 103883574 A CN103883574 A CN 103883574A CN 201210558877 A CN201210558877 A CN 201210558877A CN 103883574 A CN103883574 A CN 103883574A
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Abstract
The invention discloses a hydraulic multipoint synchronous control system. The hydraulic multipoint synchronous control system comprises hydraulic cylinders, a hydraulic oil way and a plunger pump, wherein every hydraulic cylinder comprises a piston and a piston rod, the hydraulic oil way is connected to the hydraulic cylinders, and the plunger pump is used for supplying hydraulic oil to the hydraulic oil way. The hydraulic multipoint synchronous control system also comprises a forcing oil-feed pump, and the forcing oil-feed pump is arranged on the oil sucking side of the plunger pump and used for supplying the hydraulic oil into the plunger pump forcibly. The hydraulic multipoint synchronous control system also comprises a synchronous controller, and the synchronous controller ensures that the strokes of all the piston rods are roughly the same.
Description
Technical field
The present invention relates to a kind of hydraulic control system, especially a kind of hydraulic pressure Multipoint synchronous control system.
Background technique
Existing Multipoint synchronous system is mainly used in offshore oil weighing platform, bridge formation etc., and precision General Requirements is controlled in 10mm, and what adopt is that segmentation loads, the mode of single adjusting, complex operation, inefficiency, and precision is not high.
In addition, traditional oils pumping plant is by the oil suction of plunger type spring negative pressure, and volumetric efficiency is lower.
Summary of the invention
For realizing the Multipoint synchronous control of hydraulic jacking system, the present invention is proposed.
According to an aspect of the present invention, propose a kind of hydraulic pressure Multipoint synchronous control system, having comprised: multiple deceleration loading devices, each deceleration loading device has oil hydraulic cylinder, piston and piston rod; Plunger pump; Hydraulic circuit, be connected to the oil hydraulic cylinder of described multiple deceleration loading devices, described plunger pump is for supplying with hydraulic oil to hydraulic circuit, described hydraulic circuit comprises multiple hydraulic oil branch roads of drawing from described plunger delivery side of pump, the parallel layout of described multiple hydraulic oil branch roads, on each hydraulic oil branch road, be provided with an electromagnetic switching valve, one way outlet of described electromagnetic switching valve is communicated with the hydraulic fluid chamber of piston top in oil hydraulic cylinder via the first branch, and another way outlet of described electromagnetic switching valve is communicated with the hydraulic fluid chamber of piston below in oil hydraulic cylinder via the second branch; Multiple displacement transducers, for detection of the stroke of the piston rod of corresponding oil hydraulic cylinder; An isochronous controller, described multiple displacement transducer is communicated by letter with described isochronous controller, and the piston rod stroke of described isochronous controller based on being detected by displacement transducer, controls at least one in described electromagnetic switching valve, roughly the same to guarantee the stroke of all piston rods.
Favourable, described isochronous controller control enter the oil pressure of the hydraulic oil of oil hydraulic cylinder, the oil-feed direction that enters the hydraulic oil of oil hydraulic cylinder, hydraulic oil the oil-feed time, enter at least one in the oil mass of hydraulic oil of oil hydraulic cylinder and regulate the stroke of corresponding piston rod.
Further, the degree of regulation of the stroke to piston rod is not more than 0.5mm.
Favourable, described hydraulic pressure Multipoint synchronous control system also comprises multiple pressure transducers, detects respectively multiple piston rods suffered pressure in lifting process, and described multiple pressure transducers are communicated by letter with described isochronous controller; The pressure of described isochronous controller based on being detected by described pressure transducer further regulates the stroke of corresponding piston rod.
According to a further aspect in the invention, propose a kind of hydraulic pressure Multipoint synchronous control system, having comprised: multiple deceleration loading devices, each deceleration loading device has oil hydraulic cylinder, piston and piston rod; Plunger pump; Hydraulic circuit, be connected to the oil hydraulic cylinder of described multiple deceleration loading devices, described plunger pump is for supplying with hydraulic oil to hydraulic circuit, described hydraulic circuit comprises multiple hydraulic oil branch roads of drawing from described plunger delivery side of pump, the parallel layout of described multiple hydraulic oil branch roads, on each hydraulic oil branch road, be provided with an electromagnetic switching valve, one way outlet of described electromagnetic switching valve is communicated with the hydraulic fluid chamber of piston top in oil hydraulic cylinder via the first branch, and another way outlet of described electromagnetic switching valve is communicated with the hydraulic fluid chamber of piston below in oil hydraulic cylinder via the second branch; Multiple pressure transducers, detect respectively multiple piston rods suffered pressure in lifting process; An isochronous controller, described multiple pressure transducer is communicated by letter with described isochronous controller, and the pressure of described isochronous controller based on being detected by described pressure transducer, control at least one in described electromagnetic switching valve, roughly the same to guarantee each piston rod suffered pressure in lifting process with the stroke that regulates corresponding piston rod.
Favourable, described isochronous controller control enter the oil pressure of the hydraulic oil of oil hydraulic cylinder, the oil-feed direction that enters the hydraulic oil of oil hydraulic cylinder, hydraulic oil the oil-feed time, enter at least one in the oil mass of hydraulic oil of oil hydraulic cylinder and regulate corresponding piston rod suffered pressure in lifting process.
Favourable, described hydraulic pressure Multipoint synchronous control system also comprises multiple displacement transducers, for detection of the stroke of the piston rod of corresponding oil hydraulic cylinder; Described multiple displacement transducer is communicated by letter with described isochronous controller, and the piston rod stroke of described isochronous controller based on being detected by the displacement transducer stroke that further regulates corresponding piston rod is roughly the same to guarantee each piston rod suffered pressure in lifting process.
In above-mentioned hydraulic pressure Multipoint synchronous control system, optional, described hydraulic pressure Multipoint synchronous control system also comprises pressure oil-feed pump, and described pressure oil-feed pump is arranged on the intake side of described plunger pump, for by hydraulic oil coercively fed to described plunger pump.Favourable, described outlet of plunger pump pressure is at least 70MPa, and flow is between 0.3L/min-1.2L/min.
Favourable, described plunger pump provides the flow with rotating speed linear change by the rotating speed that utilizes frequency variator to change its drive motor.
Optionally, described frequency variator utilizes analogue signal control.
Further, utilize digital signal to realize with communicating by letter of described isochronous controller.
Utilize technological scheme of the present invention, can realize the Multipoint synchronous control to hydraulic jacking system.Further, in the case of forcing oil-feed pump to be arranged on the intake side of described plunger pump, can significantly improve volumetric efficiency.And, utilize digital signal to realize with the communicating by letter of isochronous controller in the case of utilizing analogue signal control plunger pump, can significantly reduce signal interference.
Accompanying drawing explanation
Fig. 1 is the schematic block diagram of hydraulic pressure Multipoint synchronous control system according to an embodiment of the invention.
Fig. 2 is the schematic block diagram of hydraulic pressure Multipoint synchronous control system according to another embodiment of the invention.
Fig. 3 is the schematic block diagram of hydraulic pressure Multipoint synchronous control system according to still a further embodiment.
Fig. 4 is the structural representation of the pressure oil-feed of hydraulic pressure Multipoint synchronous control system according to an embodiment of the invention.
Embodiment
Describe the embodiment of exemplary of the present invention below in detail, embodiment's example is shown in the drawings, and wherein same or analogous label represents same or analogous element.The embodiment who describes below with reference to accompanying drawing is exemplary, is intended to explain the present invention, and can not be interpreted as limitation of the present invention.
As shown in fig. 1, comprise according to the hydraulic pressure Multipoint synchronous control system of one exemplary embodiment of the present invention: multiple deceleration loading devices 10, each deceleration loading device has oil hydraulic cylinder 11, piston 12 and piston rod 13, plunger pump 20, hydraulic circuit, be connected to the oil hydraulic cylinder 11 of described multiple deceleration loading device 10, described plunger pump 20 is for supplying with hydraulic oil to hydraulic circuit, described hydraulic circuit comprises multiple hydraulic oil branch roads 21 of drawing from the outlet of described plunger pump 20, the parallel layout of described multiple hydraulic oil branch roads 21, on each hydraulic oil branch road, be provided with an electromagnetic switching valve 22, one way outlet of described electromagnetic switching valve is communicated with the hydraulic fluid chamber of piston top in oil hydraulic cylinder via the first branch 221, another way outlet of described electromagnetic switching valve is communicated with the hydraulic fluid chamber of piston below in oil hydraulic cylinder via the second branch 222, multiple displacement transducers 40, for detection of the stroke of the piston rod 13 of corresponding oil hydraulic cylinder 11, an isochronous controller 50, described multiple displacement transducer 40 is communicated by letter with described isochronous controller 50, and the piston rod stroke of described isochronous controller based on being detected by displacement transducer 40, control at least one in described electromagnetic switching valve 22, roughly the same to guarantee the stroke of all piston rods 13.
In the stroke difference between piston rod 13 (its can the calculator by isochronous controller 50 calculate) in the case of within progressive error threshold value (it can be stored in the storage of isochronous controller 50) scope, isochronous controller 50 is all deceleration loading devices 10 of synchronization control directly, for example, the while is supplied with hydraulic oil to the oil pocket of piston 12 belows of the oil hydraulic cylinder 11 of deceleration loading device 10.In the situation that progressive error exceedes progressive error threshold value, isochronous controller 50 can be controlled separately respectively the piston rod 13 of each deceleration loading device 10, to regulate the stroke of each piston rod 13, also can regulate separately several deceleration loading devices 10 wherein, keep the current operation of other deceleration loading devices 10 simultaneously.By regulating one by one or local modulation, can realize the roughly equilibrium between the piston rod stroke between multiple deceleration loading devices 10.
The feedback signal of utilizing displacement transducer 40 to provide, can realize the roughly equilibrium of the stroke of the piston rod 13 of multiple deceleration loading devices 10.
Favourable, described isochronous controller 50 control the oil pressure of the hydraulic oil that enters oil hydraulic cylinder 11, the oil-feed direction that enters the hydraulic oil of oil hydraulic cylinder 11, hydraulic oil the oil-feed time, enter at least one in the oil mass of hydraulic oil of oil hydraulic cylinder and regulate the stroke of corresponding piston rod 13.The degree of regulation of the stroke to piston rod 13 is preferably not more than 0.5mm.
As shown in Figure 3, hydraulic pressure Multipoint synchronous control system in Fig. 1 also can comprise multiple pressure transducers 60, detect respectively multiple piston rods 13 suffered pressure in lifting process (or jacking process), described multiple pressure transducers 60 are communicated by letter with described isochronous controller 50; The pressure of described isochronous controller 50 based on being detected by described pressure transducer 60 further regulates the stroke of corresponding piston rod 13.
The in the situation that of piston rod 13 jacking, the pressure that piston rod 13 is subject to also can reflect the stroke of piston rod 13.For example, in the case of four deceleration loading devices 10 by Fig. 3 simultaneously rectangle plate of horizontal jacking and this four deceleration loading devices 10 be placed in respectively four bights of rectangle plate, can think that pressure that piston rod 13 is subject to is proportional to the stroke of piston rod 13.The signal that utilizes pressure transducer 60 to obtain, can further finely tune the stroke of the piston rod 13 of different deceleration loading device 10, in the situation that the stroke difference of guaranteeing piston rod 13 is in prespecified range, makes each piston rod 13 bear roughly the same pressure.
The exemplary operation that illustrates hydraulic pressure Multipoint synchronous control system below.
Suppose deceleration loading device 10 in Fig. 3 from left to right its piston rod stroke be respectively 10mm, 10.5mm, 10.5mm, 11.5mm, and the threshold value of the stroke difference of isochronous controller 50 inner piston rods 13 is 1mm.Visible, the stroke of piston rod 13 of the leftmost side and the stroke difference of the piston rod of the rightmost side 13 are 1.5mm, are greater than the threshold value 1mm of setting.Now, isochronous controller 50 can be controlled the electromagnetic switching valve 22 of the rightmost side, in the hydraulic fluid chamber of piston 12 tops of the oil hydraulic cylinder 11 of the deceleration loading device 10 of the rightmost side, supply with hydraulic oil a period of time via the first branch road 221, and keep the operation of other deceleration loading devices 10 constant, monitor the stroke of all piston rods simultaneously, until the stroke of piston rod 13 of the leftmost side and the stroke difference of the piston rod of the rightmost side 13 for example 0.5mm in 1mm, now, deceleration loading device 10 in Fig. 3 from left to right its piston rod stroke is respectively for example 10.3mm, 10.8mm, 10.8mm, 11.1mm.Then, isochronous controller 50 can be controlled the electromagnetic switching valve 22 of the rightmost side and in the hydraulic fluid chamber of piston 12 belows of the oil hydraulic cylinder 11 of the deceleration loading device 10 of the rightmost side, supply with hydraulic oil via the second branch road 222, and the stroke of all piston rods is monitored in the operation that keeps other deceleration loading devices 10 simultaneously.Certainly the electromagnetic switching valve 22 of deceleration loading device 10 correspondences that, also can close the rightmost side to interrupt to 10 fuel feeding a period of times of deceleration loading device of this rightmost side until the stroke difference of the current minimum stroke of piston rod 13 and the piston rod 13 of the rightmost side in 1mm.Can also keep the operation of electromagnetic switching valve 22 of deceleration loading device 10 correspondences of the leftmost side constant, and close three other electromagnetic switching valves 22 and not to corresponding oil hydraulic cylinder 11 fuel feeding, can increase the stroke of the piston rod 13 of the leftmost side.For the situation to single oil hydraulic cylinder fuel feeding only, rotating speed that can pilot plunger pump 20 is to regulate oil pressure, the oil mass etc. supplied with.
If based on the detection of pressure transducer 60, find through above-mentioned adjustment (progressive error between piston rod is in threshold range) afterwards deceleration loading device 10 pressure that from left to right its piston rod 13 is subject in Fig. 3 be for example respectively 100 tons, 102 tons, 103 tons, 105 tons, and the threshold pressure differential of isochronous controller 50 interior settings is 4 tons, can similarly further reduce the stroke of rightmost side piston rod 13 or further increase the stroke of leftmost side piston rod 13, until pressure reduction is in threshold pressure differential.
Certainly, the adjustment of the stroke difference recording based on displacement transducer can be synchronizeed and carry out with the adjustment of the pressure difference value recording based on pressure transducer, mutually restriction.
For the electromagnetic switching valve 22 of opening, isochronous controller 50 can also be controlled fuel feeding direction (being that electromagnetic switching valve 22 is fuel-displaced via the first branch road 221 or the second branch road 222).
The exemplary description of the operation to hydraulic pressure Multipoint synchronous control system according to an embodiment of the invention also can be applicable to the operation of following hydraulic pressure Multipoint synchronous control system according to another embodiment of the invention similarly above.
As shown in Figure 2, according to the hydraulic pressure Multipoint synchronous control system of another exemplary embodiment of the present invention, comprising: multiple deceleration loading devices 10, each deceleration loading device has oil hydraulic cylinder 11, piston 12 and piston rod 13, plunger pump 20, hydraulic circuit, be connected to the oil hydraulic cylinder 11 of described multiple deceleration loading devices, described plunger pump 20 is for supplying with hydraulic oil to hydraulic circuit, described hydraulic circuit comprises multiple hydraulic oil branch roads 21 of drawing from described plunger delivery side of pump, the parallel layout of described multiple hydraulic oil branch roads 21, on each hydraulic oil branch road, be provided with an electromagnetic switching valve 22, one way outlet of described electromagnetic switching valve 22 is communicated with the hydraulic fluid chamber of piston top in oil hydraulic cylinder via the first branch 221, another way outlet of described electromagnetic switching valve is communicated with the hydraulic fluid chamber of piston below in oil hydraulic cylinder via the second branch 222, multiple pressure transducers 60, detect respectively multiple piston rods 13 suffered pressure in (or jacking) process of lifting, an isochronous controller 50, described multiple pressure transducer 60 is communicated by letter with described isochronous controller 50, and the pressure of described isochronous controller based on being detected by described pressure transducer 60, control at least one in described electromagnetic switching valve 22, roughly the same to guarantee each piston rod 13 suffered pressure in lifting process with the stroke that regulates corresponding piston rod 13.
The feedback signal of utilizing pressure transducer 60 to provide, can realize the roughly balanced of pressure that the piston rod of multiple deceleration loading devices 10 is subject to.
Similarly, described isochronous controller 50 can control the oil pressure of the hydraulic oil that enters oil hydraulic cylinder 11, the oil-feed direction that enters the hydraulic oil of oil hydraulic cylinder 11, hydraulic oil the oil-feed time, enter at least one in the oil mass of hydraulic oil of oil hydraulic cylinder 11 and regulate corresponding piston rod 13 suffered pressure in lifting process.
Equally as shown in Figure 3, the hydraulic pressure Multipoint synchronous control system in Fig. 2 also can comprise multiple displacement transducers, for detection of the stroke of the piston rod 13 of corresponding oil hydraulic cylinder 11.Described multiple displacement transducer 40 is communicated by letter with described isochronous controller 50, and piston rod 13 strokes of described isochronous controller 50 based on being detected by displacement transducer 40 stroke that further regulates corresponding piston rod 13 is roughly the same to guarantee each piston rod 13 suffered pressure in lifting process.
The in the situation that of piston rod 13 jacking, the stroke of piston rod 13 also can reflect the pressure that piston rod 13 is subject to.For example, be placed in respectively four bights of rectangle plate at 10 while of four deceleration loading devices rectangle plate of horizontal jacking and this four deceleration loading devices 10 by Fig. 3, can think that the stroke of piston rod 13 is proportional to the pressure that piston rod 13 is subject to.The signal that utilizes displacement transducer 40 to obtain; can further finely tune the pressure that the piston rod 13 of different deceleration loading device 10 is subject to; in the situation that guaranteeing that pressure difference value that piston rod 13 is subject to is in prespecified range, make each piston rod 13 keep roughly the same stroke.
As shown in Fig. 1-3, described hydraulic pressure Multipoint synchronous control system also comprise force oil-feed pump 70, described pressure oil-feed pump 70 is arranged on the intake side of described plunger pump 20, for by hydraulic oil coercively fed to described plunger pump 20.In Fig. 4, show in detail and force being connected between oil-feed pump 70 and plunger pump 20.In the case of forcing oil-feed pump 70 to be arranged on the intake side of described plunger pump, especially, for the running of hydraulic power oil of small flow, can significantly improve volumetric efficiency.
Favourable, described plunger pump 20 outlet pressures are at least 70MPa, and flow is between 0.3L/min-1.2L/min.
Described plunger pump 20 can provide for example, flow with rotating speed (300r/min-2000r/min) linear change by the rotating speed that utilizes frequency variator to change its drive motor.Described frequency variator can utilize analogue signal control.Favourable, utilize digital signal to realize with the communicating by letter of described isochronous controller 50 (comprising communicating by letter of pressure transducer and/or displacement transducer and isochronous controller 50), so, can significantly reduce signal and disturb.
Although illustrated and described embodiments of the invention, for the ordinary skill in the art, be appreciated that without departing from the principles and spirit of the present invention and can change these embodiments.Applicable scope of the present invention is limited by claims and equivalent thereof.
Claims (12)
1. a hydraulic pressure Multipoint synchronous control system, comprising:
Multiple deceleration loading devices, each deceleration loading device has oil hydraulic cylinder, piston and piston rod;
Plunger pump;
Hydraulic circuit, be connected to the oil hydraulic cylinder of described multiple deceleration loading devices, described plunger pump is for supplying with hydraulic oil to hydraulic circuit, described hydraulic circuit comprises multiple hydraulic oil branch roads of drawing from described plunger delivery side of pump, the parallel layout of described multiple hydraulic oil branch roads, on each hydraulic oil branch road, be provided with an electromagnetic switching valve, one way outlet of described electromagnetic switching valve is communicated with the hydraulic fluid chamber of piston top in oil hydraulic cylinder via the first branch, and another way outlet of described electromagnetic switching valve is communicated with the hydraulic fluid chamber of piston below in oil hydraulic cylinder via the second branch;
Multiple displacement transducers, for detection of the stroke of the piston rod of corresponding oil hydraulic cylinder;
An isochronous controller, described multiple displacement transducer is communicated by letter with described isochronous controller, and the piston rod stroke of described isochronous controller based on being detected by displacement transducer, controls at least one in described electromagnetic switching valve, roughly the same to guarantee the stroke of all piston rods.
2. hydraulic pressure Multipoint synchronous control system according to claim 1, is characterized in that:
Described isochronous controller control enter the oil pressure of the hydraulic oil of oil hydraulic cylinder, the oil-feed direction that enters the hydraulic oil of oil hydraulic cylinder, hydraulic oil the oil-feed time, enter at least one in the oil mass of hydraulic oil of oil hydraulic cylinder and regulate the stroke of corresponding piston rod.
3. hydraulic pressure Multipoint synchronous control system according to claim 2, is characterized in that:
The degree of regulation of the stroke to piston rod is not more than 0.5mm.
4. hydraulic pressure Multipoint synchronous control system according to claim 2, is characterized in that:
Described hydraulic pressure Multipoint synchronous control system also comprises multiple pressure transducers, detects respectively multiple piston rods suffered pressure in lifting process, and described multiple pressure transducers are communicated by letter with described isochronous controller;
The pressure of described isochronous controller based on being detected by described pressure transducer further regulates the stroke of corresponding piston rod.
5. a hydraulic pressure Multipoint synchronous control system, comprising:
Multiple deceleration loading devices, each deceleration loading device has oil hydraulic cylinder, piston and piston rod;
Plunger pump;
Hydraulic circuit, be connected to the oil hydraulic cylinder of described multiple deceleration loading devices, described plunger pump is for supplying with hydraulic oil to hydraulic circuit, described hydraulic circuit comprises multiple hydraulic oil branch roads of drawing from described plunger delivery side of pump, the parallel layout of described multiple hydraulic oil branch roads, on each hydraulic oil branch road, be provided with an electromagnetic switching valve, one way outlet of described electromagnetic switching valve is communicated with the hydraulic fluid chamber of piston top in oil hydraulic cylinder via the first branch, and another way outlet of described electromagnetic switching valve is communicated with the hydraulic fluid chamber of piston below in oil hydraulic cylinder via the second branch;
Multiple pressure transducers, detect respectively multiple piston rods suffered pressure in lifting process;
An isochronous controller, described multiple pressure transducer is communicated by letter with described isochronous controller, and the pressure of described isochronous controller based on being detected by described pressure transducer, control at least one in described electromagnetic switching valve, roughly the same to guarantee each piston rod suffered pressure in lifting process with the stroke that regulates corresponding piston rod.
6. hydraulic pressure Multipoint synchronous control system according to claim 5, is characterized in that:
Described isochronous controller control enter the oil pressure of the hydraulic oil of oil hydraulic cylinder, the oil-feed direction that enters the hydraulic oil of oil hydraulic cylinder, hydraulic oil the oil-feed time, enter at least one in the oil mass of hydraulic oil of oil hydraulic cylinder and regulate corresponding piston rod suffered pressure in lifting process.
7. hydraulic pressure Multipoint synchronous control system according to claim 5, is characterized in that:
Described hydraulic pressure Multipoint synchronous control system also comprises multiple displacement transducers, for detection of the stroke of the piston rod of corresponding oil hydraulic cylinder;
Described multiple displacement transducer is communicated by letter with described isochronous controller, and the piston rod stroke of described isochronous controller based on being detected by the displacement transducer stroke that further regulates corresponding piston rod is roughly the same to guarantee each piston rod suffered pressure in lifting process.
8. according to the hydraulic pressure Multipoint synchronous control system described in any one in claim 1-7, it is characterized in that:
Described hydraulic pressure Multipoint synchronous control system also comprises pressure oil-feed pump, and described pressure oil-feed pump is arranged on the intake side of described plunger pump, for by hydraulic oil coercively fed to described plunger pump.
9. hydraulic pressure Multipoint synchronous control system according to claim 8, is characterized in that:
Described outlet of plunger pump pressure is at least 70MPa, and flow is between 0.3L/min-1.2L/min.
10. hydraulic pressure Multipoint synchronous control system according to claim 9, is characterized in that:
Described plunger pump provides the flow with rotating speed linear change by the rotating speed that utilizes frequency variator to change its drive motor.
11. hydraulic pressure Multipoint synchronous control system according to claim 10, is characterized in that:
Described frequency variator utilizes analogue signal control.
12. hydraulic pressure Multipoint synchronous control system according to claim 11, is characterized in that:
Utilize digital signal to realize with communicating by letter of described isochronous controller.
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| CN105298961A (en) * | 2015-12-11 | 2016-02-03 | 天津市天锻压力机有限公司 | Multi-oil-cylinder synchronous traction control system and method applied to marine engineering field |
| CN108146877A (en) * | 2017-12-15 | 2018-06-12 | 太仓佳锐精密模具有限公司 | Control device is rotated under a kind of barrel limited |
| CN110081036A (en) * | 2019-05-08 | 2019-08-02 | 中冶宝钢技术服务有限公司 | Multi-cylinder synchronous control system and its control method |
| CN110714948A (en) * | 2019-10-17 | 2020-01-21 | 广东博智林机器人有限公司 | Control system and method for synchronous operation of multiple hydraulic execution elements and climbing frame |
| CN111038698A (en) * | 2019-12-30 | 2020-04-21 | 中航电测仪器(西安)有限公司 | Manual hydraulic multipoint synchronization mechanism and operation method thereof |
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| CN105298961A (en) * | 2015-12-11 | 2016-02-03 | 天津市天锻压力机有限公司 | Multi-oil-cylinder synchronous traction control system and method applied to marine engineering field |
| CN105298961B (en) * | 2015-12-11 | 2017-07-14 | 天津市天锻压力机有限公司 | Ocean engineering field Multi-cylinder sync pulling control system and control method |
| CN108146877A (en) * | 2017-12-15 | 2018-06-12 | 太仓佳锐精密模具有限公司 | Control device is rotated under a kind of barrel limited |
| CN110081036A (en) * | 2019-05-08 | 2019-08-02 | 中冶宝钢技术服务有限公司 | Multi-cylinder synchronous control system and its control method |
| CN110714948A (en) * | 2019-10-17 | 2020-01-21 | 广东博智林机器人有限公司 | Control system and method for synchronous operation of multiple hydraulic execution elements and climbing frame |
| CN110714948B (en) * | 2019-10-17 | 2021-03-26 | 广东博智林机器人有限公司 | Control system and method for synchronous operation of multiple hydraulic execution elements and climbing frame |
| CN111038698A (en) * | 2019-12-30 | 2020-04-21 | 中航电测仪器(西安)有限公司 | Manual hydraulic multipoint synchronization mechanism and operation method thereof |
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