WO2013176559A1 - Hydraulic operating device - Google Patents

Hydraulic operating device Download PDF

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Publication number
WO2013176559A1
WO2013176559A1 PCT/PL2013/000065 PL2013000065W WO2013176559A1 WO 2013176559 A1 WO2013176559 A1 WO 2013176559A1 PL 2013000065 W PL2013000065 W PL 2013000065W WO 2013176559 A1 WO2013176559 A1 WO 2013176559A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve block
actuator
control system
automatic control
controlled
Prior art date
Application number
PCT/PL2013/000065
Other languages
French (fr)
Inventor
Jacek CHMIELEWSKI
Original Assignee
Sigma S.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sigma S.A. filed Critical Sigma S.A.
Publication of WO2013176559A1 publication Critical patent/WO2013176559A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/20—Other details, e.g. assembly with regulating devices
    • F15B15/202—Externally-operated valves mounted in or on the actuator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means

Definitions

  • This invention is a hydraulic operating device, especially its hydraulic system and electric system that allows to fully control the operation of a machine with such a device or several devices working together.
  • a control system is known in practice which consists of a pump set supplying the hydraulic fluid through a remote-controlled valve block to a bank of hydraulic actuators located at different distances from the valve block or working in different sequences. This situation occurs, for example, in mechanised longwall lining used in coal mining.
  • two devices must be operated synchronously, which in practice is very difficult, beginning with different values of hydraulic resistances along the route between the valve block and the individual devices, different loads of driven mechanisms or the differences between the devices themselves.
  • the devices are installed adjacent to the driven mechanisms, where for various reasons, there is no space for additional elements.
  • valve blocks are installed in locations where an operator has physical access, i.e. in some distance away from the devices.
  • Valve blocks are driven manually or by means of electromagnets powered from the mine's power grid.
  • the distance between the valve block and the individual devices has an effect on hydraulic resistance and, consequently, the operation of the devices working together.
  • the operator observing the work of actuators can roughly control their work through the valve block, in mining conditions, in dusty, dark places, and in general a large number of devices, it is very difficult, if not impossible.
  • the operator is also unable to determine whether both devices operate at a similar load.
  • PL 396 656 Al presents an actuator equipped with an external rod extension indicator, which allows remote control of the actuator.
  • the extension indicator is mounted to actuator's cylinder and to the piston.
  • the essence of the hydraulic operating device with a measuring unit coupled to a controlled device supplied with hydraulic fluid lies in the fact that it is provided with its own source of electricity supplying the automatic control system and the valve block, through which the controlled device is powered, and the measuring unit is connected to the automatic control system, which is equipped with a transceiver, especially for remote communication with other transmitters or receivers, whereas the power source, automatic control system, the valve block, the measuring unit and the transceiver are mounted to the controlled device.
  • the internal power source is a battery or a storage battery.
  • the internal power source is a generator, which preferably is driven by hydraulic fluid at the same time supply the controlled device.
  • the generator has a hydraulic motor which drives the electric generator.
  • the controlled device is preferably a cylinder and the actuating member is a piston.
  • the actuator is preferably provided with pressure sensors combined with the automatic control system, wherein the first sensor is preferably embedded below the piston, and the second sensor above the piston.
  • the valve block preferably has electrohydraulic control and consists of an electrically controlled auxiliary valve block and a main valve block controlled hydraulically by the pressure of the hydraulic fluid from the auxiliary valve block. All components of the hydraulic operating device preferably are attached to its body, and the actuator, to its cylinder.
  • the hydraulic operating device according to this invention eliminates the influence of various factors, including hydraulic resistance resulting in the lines between the valve block and the controlled device. It allows to fully automate the operation of machines with multiple controlled devices, as well as a number of such machines working together, especially working in underground mines.
  • the hydraulic operating device is powered only with hydraulic fluid, and the electricity needed to operate the valve block, the automatic control system, the measuring unit and the transceiver is drawn from its own source of electricity supplied by the same hydraulic fluid as the controlled device.
  • the hydraulic working device is a compact device, comparable to the size of the cylinder of a hydraulic actuator, which is the controlled device.
  • the hydraulic operating device is shown in versions in the drawing, in which:
  • fig. 1 shows a general diagram of the operating device
  • Figure 1 shows a general diagram of the hydraulic operating device.
  • the device consists of an actuator ( 1) supplied in known manner by the valve block (2) from the pump set not shown in the drawing.
  • the actuator (1) is equipped with a measuring unit (3) for measuring the position of the piston.
  • the measuring unit (3) is connected to the automatic control system
  • valve block (2) which, like the valve block (2) is supplied with its own power supply
  • the automatic control system (4) is equipped with a transceiver (6) for remote communication with the control panel.
  • the electrical components are connected via single- or multi-core cables (7), or through the actuator's cylinder ( 1 ) used as weight, and the hydraulic elements are connected via pipes (8). All these units are attached to the actuator's cylinder ( 1) and together form a compact object.
  • FIG 2 shows a general diagram of an alternative hydraulic operating device.
  • the alternative device consists of an actuator ( 1 ) supplied with hydraulic fluid through the valve block (2), wherein the actuator ( 1) is provided with a measuring unit (3) and two pressure sensors, the first sensor (9a) is mounted under the piston, and a second sensor (9b) is mounted above the piston.
  • the first sensor (9a), the second sensor (9b), the measuring unit (3) and the valve block (2) are connected with the automatic control system (4) equipped with a transceiver (6).
  • These elements are powered by the generator (10) via the battery (1 1), wherein the generator is powered by a hydraulic fluid that drives the actuator (1). All elements of the device are fastened to the actuator's cylinder ( 1).
  • FIG 3 shows a detailed diagram of the operating device (13) supplied with hydraulic fluid under high pressure from the pump set(14).
  • the operating device (13) is composed of two main systems, hydraulic and electrical system.
  • the hydraulic system consists of an actuator (15) powered by main valve block (16) controlled by low pressure from the auxiliary valve block ( 17) and electrically controlled supplied with hydraulic fluid with reduced pressure.
  • the high pressure circuit also has a generator ( 19) connected, which creates an electrical current in order to supply or control elements of the electrical system.
  • the electrical system consists of a generator ( 19) which generates an electrical current supplying the automatic control system (23) through a voltage stabilisation circuit (24) and the battery (25).
  • the automatic control system (23) is connected to the transceiver (26).
  • FIG. 4 shows a diagram of controlling the operation of a machine not shown, which is equipped with four hydraulic operating devices, the first device (3 1), the second device (32), the third device (33) and the fourth device (34). The devices are supplied from a common pump set (30), and are remotely controlled from the control panel (35).
  • Control is carried out using a computer program that provides communications from the control panel (35) with any device, as well as communication between at least two of the four devices. From the control panel (35), it is possible, for example, to give the appropriate commands to the device and observe the operating parameters of the device. Moreover, in the case of devices used in cooperation with each other one of them is identified as the parent, and the second is supposed to keep up with its work tracking its parameters and adapting to them in order to provide a fully synchronous operation of both devices.
  • the basic parameters of operation of the device, both measured and controlled are the position of the piston relative to the cylinder, the speed of its travel and the hydraulic fluid pressure in the device. Of course, other parameters can also be measured such as hydraulic fluid temperature, or the position of the device in space.

Abstract

The device consists of an actuator (1) supplied with hydraulic fluid through the valve block (2), wherein the actuator (1) is provided with a measuring unit (3) and two pressure sensors, the first sensor (9a) is mounted under the piston, and a second sensor (9b) is mounted above the piston. The first sensor (9a), the second sensor (9b), the measuring unit (3) and the valve block (2) are connected with the automatic control system (4) equipped with a transceiver (6). These elements are powered by the generator (10) via the battery bank (11), wherein the generator is powered by hydraulic fluid that drives the actuator (1). All elements of the device (8) are connected to the actuator's cylinder (1).

Description

H Y D RA UL I C O P ERAT IN G D E V I C E
This invention is a hydraulic operating device, especially its hydraulic system and electric system that allows to fully control the operation of a machine with such a device or several devices working together. A control system is known in practice which consists of a pump set supplying the hydraulic fluid through a remote-controlled valve block to a bank of hydraulic actuators located at different distances from the valve block or working in different sequences. This situation occurs, for example, in mechanised longwall lining used in coal mining. In many cases, two devices must be operated synchronously, which in practice is very difficult, beginning with different values of hydraulic resistances along the route between the valve block and the individual devices, different loads of driven mechanisms or the differences between the devices themselves. The devices are installed adjacent to the driven mechanisms, where for various reasons, there is no space for additional elements. However, valve blocks are installed in locations where an operator has physical access, i.e. in some distance away from the devices. Valve blocks are driven manually or by means of electromagnets powered from the mine's power grid. The distance between the valve block and the individual devices has an effect on hydraulic resistance and, consequently, the operation of the devices working together. While in many cases the operator observing the work of actuators can roughly control their work through the valve block, in mining conditions, in dusty, dark places, and in general a large number of devices, it is very difficult, if not impossible. When two devices are driven by a single mechanism, the operator is also unable to determine whether both devices operate at a similar load. The patent application No. PL 396 656 Al presents an actuator equipped with an external rod extension indicator, which allows remote control of the actuator. The extension indicator is mounted to actuator's cylinder and to the piston. The essence of the hydraulic operating device with a measuring unit coupled to a controlled device supplied with hydraulic fluid lies in the fact that it is provided with its own source of electricity supplying the automatic control system and the valve block, through which the controlled device is powered, and the measuring unit is connected to the automatic control system, which is equipped with a transceiver, especially for remote communication with other transmitters or receivers, whereas the power source, automatic control system, the valve block, the measuring unit and the transceiver are mounted to the controlled device.
The internal power source is a battery or a storage battery. In an alternative solution, the internal power source is a generator, which preferably is driven by hydraulic fluid at the same time supply the controlled device. In the particular case the generator has a hydraulic motor which drives the electric generator. The controlled device is preferably a cylinder and the actuating member is a piston. The actuator is preferably provided with pressure sensors combined with the automatic control system, wherein the first sensor is preferably embedded below the piston, and the second sensor above the piston.
The valve block preferably has electrohydraulic control and consists of an electrically controlled auxiliary valve block and a main valve block controlled hydraulically by the pressure of the hydraulic fluid from the auxiliary valve block. All components of the hydraulic operating device preferably are attached to its body, and the actuator, to its cylinder. The hydraulic operating device according to this invention eliminates the influence of various factors, including hydraulic resistance resulting in the lines between the valve block and the controlled device. It allows to fully automate the operation of machines with multiple controlled devices, as well as a number of such machines working together, especially working in underground mines. Moreover, the hydraulic operating device is powered only with hydraulic fluid, and the electricity needed to operate the valve block, the automatic control system, the measuring unit and the transceiver is drawn from its own source of electricity supplied by the same hydraulic fluid as the controlled device. The hydraulic working device is a compact device, comparable to the size of the cylinder of a hydraulic actuator, which is the controlled device.
The hydraulic operating device is shown in versions in the drawing, in which:
fig. 1 shows a general diagram of the operating device,
• fig. 2 shows a general diagram of an alternative operating device,
• fig. 3 shows a detailed diagram of the operating device,
• fig. 4 shows the control system for several devices.
Figure 1 shows a general diagram of the hydraulic operating device. The device consists of an actuator ( 1) supplied in known manner by the valve block (2) from the pump set not shown in the drawing. The actuator (1) is equipped with a measuring unit (3) for measuring the position of the piston. The measuring unit (3) is connected to the automatic control system
(4) , which, like the valve block (2) is supplied with its own power supply
(5) . The automatic control system (4) is equipped with a transceiver (6) for remote communication with the control panel. The electrical components are connected via single- or multi-core cables (7), or through the actuator's cylinder ( 1 ) used as weight, and the hydraulic elements are connected via pipes (8). All these units are attached to the actuator's cylinder ( 1) and together form a compact object.
Figure 2 shows a general diagram of an alternative hydraulic operating device. The alternative device consists of an actuator ( 1 ) supplied with hydraulic fluid through the valve block (2), wherein the actuator ( 1) is provided with a measuring unit (3) and two pressure sensors, the first sensor (9a) is mounted under the piston, and a second sensor (9b) is mounted above the piston. The first sensor (9a), the second sensor (9b), the measuring unit (3) and the valve block (2) are connected with the automatic control system (4) equipped with a transceiver (6). These elements are powered by the generator (10) via the battery (1 1), wherein the generator is powered by a hydraulic fluid that drives the actuator (1). All elements of the device are fastened to the actuator's cylinder ( 1).
Figure 3 shows a detailed diagram of the operating device (13) supplied with hydraulic fluid under high pressure from the pump set(14). The operating device (13) is composed of two main systems, hydraulic and electrical system.
The hydraulic system consists of an actuator (15) powered by main valve block (16) controlled by low pressure from the auxiliary valve block ( 17) and electrically controlled supplied with hydraulic fluid with reduced pressure. The high pressure circuit also has a generator ( 19) connected, which creates an electrical current in order to supply or control elements of the electrical system.
To the pump set's outlet (14), through the filter (20), in parallel connected are the main valve block inlet (16), generator ( 19) and a pressure reducing valve (21) whose outlet is connected to the inlet of the auxiliary valve block (17) and the outlet of the auxiliary valve block ( 17) is connected to the control member of the main valve block (16). The electrical system consists of a generator ( 19) which generates an electrical current supplying the automatic control system (23) through a voltage stabilisation circuit (24) and the battery (25). The automatic control system (23) is connected to the transceiver (26). To the measurement inputs of the automatic control system (23), connected is the first sensor (27a) embedded in below the piston and the second sensor (27b) embedded above the piston in the actuator ( 15) and an piston position indicator (28) attached along the actuator's cylinder (15). Also, auxiliary valve block's electromagnet's coils ( 17) are connected to the control outputs. Figure 4 shows a diagram of controlling the operation of a machine not shown, which is equipped with four hydraulic operating devices, the first device (3 1), the second device (32), the third device (33) and the fourth device (34). The devices are supplied from a common pump set (30), and are remotely controlled from the control panel (35).
Control is carried out using a computer program that provides communications from the control panel (35) with any device, as well as communication between at least two of the four devices. From the control panel (35), it is possible, for example, to give the appropriate commands to the device and observe the operating parameters of the device. Moreover, in the case of devices used in cooperation with each other one of them is identified as the parent, and the second is supposed to keep up with its work tracking its parameters and adapting to them in order to provide a fully synchronous operation of both devices. The basic parameters of operation of the device, both measured and controlled, are the position of the piston relative to the cylinder, the speed of its travel and the hydraulic fluid pressure in the device. Of course, other parameters can also be measured such as hydraulic fluid temperature, or the position of the device in space.

Claims

1. Hydraulic operating device with a measuring unit coupled with the controlled device supplied with hydraulic fluid, characterised in that it is provided with its own source of electrical power (5) powering the automatic control system (4) and the valve block (2) through which the controlled device is supplied, whereas the measuring unit (3) for the position of the actuating member of the controlled device is connected to an automatic control system (4), and the source of electrical power (5) the automatic control system (4), valve block (2) and the measuring unit (3) are mounted to the controlled device.
2. The device according to claim 1 is characterised in that the automatic control system (4) is equipped with a transceiver (6).
3. The device according to claim 1 is characterised in that the controlled device is an actuator ( 1 ) and the actuating member is a piston.
4. The device according to claim 1 is characterised in that the source of electrical power (5) is a battery or a storage battery (1 1).
5. The device according to claim 1 is characterised in that the source of electrical power (5) is a generator (10).
6. The device according to claim 5 is characterised in that the generator (10) is driven by the hydraulic fluid at the same time supplying the actuator.
7. The device according to claim 3 is characterised in that the actuator (1) is provided with a pressure sensor connected to the automatic control system (4).
8. The device according to claim 7 is characterised in that it has two sensors, wherein the first sensor (9a) is mounted below the piston and the second sensor (9b) is mounted above the piston of the actuator
(1) ·
9. The device according to claim 1 is characterised in that the valve block (2) has electrohydraulic control and consists of an electrically controlled auxiliary valve block (17) and a main valve block (16) controlled hydraulically by the pressure of the hydraulic fluid from the auxiliary valve block.
10. The device according to claim 1 is characterised in that the source of electrical power (5), the automatic control system (4), the valve block
(2) and the measuring unit (3) are mounted to the actuator's cylinder
(1).
11. The device according to claim 6 is characterised in that the generator (19) has a hydraulic motor which drives the electric generator.
PCT/PL2013/000065 2012-05-23 2013-05-22 Hydraulic operating device WO2013176559A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL399277A PL399277A1 (en) 2012-05-23 2012-05-23 Hydraulic operating device
PLP.399277 2012-05-23

Publications (1)

Publication Number Publication Date
WO2013176559A1 true WO2013176559A1 (en) 2013-11-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
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WO (1) WO2013176559A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104881000A (en) * 2014-02-27 2015-09-02 中国矿业大学 High-precision full-automatic servo control system of roadway support test stand

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108679014A (en) * 2018-08-03 2018-10-19 中国铁建重工集团有限公司 A kind of drilling machine and its all-hydraulic hand control valve station

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3620752A1 (en) * 1986-06-20 1987-12-23 Hemscheidt Maschf Hermann METHOD FOR GENERATING ELECTRICAL ENERGY BY MEANS OF A PRESSURE MEDIUM
DE10324163A1 (en) * 2003-05-28 2005-01-05 Rexroth Mecman Gmbh Self sufficient cylinder valve unit for e.g. servo motor, has valve powered by electricity generated by energy converter using pressure supplied to valve
DE102004063807A1 (en) * 2004-12-30 2006-07-13 Hartmann, Eva Heat transport device for cooling or tempering a device has flow channel for heat transport fluid, in which flow channel is extended in coiled or spiral manner through block which is in good thermal contact with device or area to be cooled
DE202007014578U1 (en) * 2007-10-18 2008-02-28 Probst Greiftechnik-Verlegesysteme Gmbh Device for supplying power to a hydraulic construction machine, in particular a hydraulic laying device for paving stones
PL396656A1 (en) 2011-10-17 2012-02-27 Fabryka Zmechanizowanych Obudów Ścianowych Fazos Spółka Akcyjna Pull-out external indicator, preferably of a servo-motor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3620752A1 (en) * 1986-06-20 1987-12-23 Hemscheidt Maschf Hermann METHOD FOR GENERATING ELECTRICAL ENERGY BY MEANS OF A PRESSURE MEDIUM
DE10324163A1 (en) * 2003-05-28 2005-01-05 Rexroth Mecman Gmbh Self sufficient cylinder valve unit for e.g. servo motor, has valve powered by electricity generated by energy converter using pressure supplied to valve
DE102004063807A1 (en) * 2004-12-30 2006-07-13 Hartmann, Eva Heat transport device for cooling or tempering a device has flow channel for heat transport fluid, in which flow channel is extended in coiled or spiral manner through block which is in good thermal contact with device or area to be cooled
DE202007014578U1 (en) * 2007-10-18 2008-02-28 Probst Greiftechnik-Verlegesysteme Gmbh Device for supplying power to a hydraulic construction machine, in particular a hydraulic laying device for paving stones
PL396656A1 (en) 2011-10-17 2012-02-27 Fabryka Zmechanizowanych Obudów Ścianowych Fazos Spółka Akcyjna Pull-out external indicator, preferably of a servo-motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104881000A (en) * 2014-02-27 2015-09-02 中国矿业大学 High-precision full-automatic servo control system of roadway support test stand

Also Published As

Publication number Publication date
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