WO2002030806A1 - Système d'équilibrage par air - Google Patents
Système d'équilibrage par air Download PDFInfo
- Publication number
- WO2002030806A1 WO2002030806A1 PCT/JP2001/007101 JP0107101W WO0230806A1 WO 2002030806 A1 WO2002030806 A1 WO 2002030806A1 JP 0107101 W JP0107101 W JP 0107101W WO 0230806 A1 WO0230806 A1 WO 0230806A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- flow path
- pressure
- valve
- supply
- lever member
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F19/00—Hoisting, lifting, hauling or pushing, not otherwise provided for
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/18—Power-operated hoists
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/2053—Type of pump
- F15B2211/20538—Type of pump constant capacity
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
- F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30505—Non-return valves, i.e. check valves
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/305—Directional control characterised by the type of valves
- F15B2211/30525—Directional control valves, e.g. 4/3-directional control valve
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/321—Directional control characterised by the type of actuation mechanically
- F15B2211/325—Directional control characterised by the type of actuation mechanically actuated by an output member of the circuit
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/32—Directional control characterised by the type of actuation
- F15B2211/329—Directional control characterised by the type of actuation actuated by fluid pressure
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/30—Directional control
- F15B2211/365—Directional control combined with flow control and pressure control
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40515—Flow control characterised by the type of flow control means or valve with variable throttles or orifices
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/405—Flow control characterised by the type of flow control means or valve
- F15B2211/40576—Assemblies of multiple valves
- F15B2211/40584—Assemblies of multiple valves the flow control means arranged in parallel with a check valve
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/42—Flow control characterised by the type of actuation
- F15B2211/428—Flow control characterised by the type of actuation actuated by fluid pressure
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/40—Flow control
- F15B2211/47—Flow control in one direction only
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/60—Circuit components or control therefor
- F15B2211/625—Accumulators
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/705—Output members, e.g. hydraulic motors or cylinders or control therefor characterised by the type of output members or actuators
- F15B2211/7051—Linear output members
- F15B2211/7052—Single-acting output members
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/71—Multiple output members, e.g. multiple hydraulic motors or cylinders
-
- 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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/70—Output members, e.g. hydraulic motors or cylinders or control therefor
- F15B2211/76—Control of force or torque of the output member
Definitions
- the present invention relates to an air balance device for suspending a transferred object by antagonizing a load of the transferred object and a supply pressure to a cylinder.
- the load of the transported object is configured to act on the reaction force chamber partitioned by the diaphragm, and the pressure of the pressure chamber due to the change in the load is set.
- the main valve is switched to supply compressed air from a pressure source to the working chamber of the cylinder, or the working chamber is opened to the atmosphere to control the working chamber pressure to reduce the load on the load.
- An object of the present invention is to provide an air balance device that can be easily operated and can be balanced with a transported object with a simple configuration.
- the present invention has taken the following means to solve the object. That is,
- a pressure adjusting valve that regulates a pressure of a supply / discharge flow path connected to a working chamber of a cylinder that lifts and lowers the transported object to a pressure that antagonizes the weight of the transported object; Air balance device that balances the weight of
- a switching valve is provided for communicating the supply / discharge flow path with the control flow path at the time of balancing, and a switching valve for communicating the supply / discharge flow path and the pipe flow path at the time of lifting / lowering drive.
- An elevating valve mechanism for supplying or discharging compressed air to the supply / discharge flow path via a variable throttle valve to elevate and lower the conveyed body during the elevating drive;
- the cylinder is attached to a lever member swingably supported around a fulcrum pin,
- a restoring force mechanism for applying an acting force in the same direction as the load of the conveyed object to the lever member by introducing a pilot pressure from the control flow path is provided near a fulcrum pin
- the pressure regulating valve is configured to control the supply / discharge flow path, the control flow path, and the switching in accordance with an operation force due to swinging of the lever member and an operation force due to introduction of a pilot pressure from the control flow path.
- An air balance device is characterized by supplying and discharging compressed air via a valve.
- the raising / lowering valve mechanism includes: a rising valve that communicates a pressure source with the supply / discharge flow path via a variable throttle valve by introducing a pilot pressure; and a rising valve that introduces a pilot pressure.
- a down valve that communicates the atmosphere with the supply / discharge flow path via a variable throttle valve may be provided.
- the urging force mechanism may include an urging chamber communicated with the tank, and apply an operating force to the lever member by an operating force of compressed air pressure introduced into the urging chamber.
- FIG. 1 is a schematic configuration diagram of an air balance device as one embodiment of the present invention.
- ⁇ 2 is a schematic configuration diagram of main parts of an air balance device as a second embodiment
- FIG. 3 is a schematic configuration diagram of main parts of an air balance device as a third embodiment.
- FIG. 4 is a schematic configuration diagram of main parts of an air balance device as a fourth embodiment
- FIG. 5 is a cross-sectional view of the pressure regulating valve of the present embodiment
- FIG. 6 is a sectional view of a pressure regulating valve as another embodiment
- FIG. 7 is a sectional view of a pressure regulating valve as another embodiment.
- reference numeral 1 denotes a conveyed object, which is suspended and supported by a cylinder 2.
- a piston 6 is slidably inserted into the cylinder tube 4 of the cylinder 2.
- the working force for raising the piston 6 acts.
- a hook 9 is attached to a rod 6 a integral with the piston 6, and the transferred object 1 is suspended from the hook 9. Have been able to.
- the switching valve 14 is of a pie port operation type, and includes a lifting drive position 14 a communicating the supply / discharge flow path 10 and the pie port flow path 16, and a supply / discharge flow path 10. And a balance position 14 b communicating with the control flow path 18.
- the supply / discharge channel 10 is connected to a high-pressure channel 22 communicating with the pressure source 20 and a low-pressure channel 24 open to the atmosphere.
- the high-pressure flow path 22 is provided with a rising valve 26 and a variable throttle valve 28.
- the ascending valve 26 has an open position 26 a communicating with the high pressure flow path 22, and exhaust is performed without introduction of the pilot pressure.
- the low-pressure flow path 24 is provided with a descending valve 30 and a variable throttle valve 32.
- the descending valve 30 has an open position 30 a communicating with the low-pressure passage 24 when the pilot pressure is introduced through the descending pilot passage 31, and the exhaust pressure without the introduction of the pilot pressure.
- a closed position 30b that sometimes blocks the low-pressure flow path 24 is provided.
- the lift valve 26, the variable throttle valve 28, the lowering valve 30, and the variable throttle valve 32 constitute a lift valve mechanism.
- the ascending pilot flow path 27 and the descending pilot flow path 31 are connected to a driving pilot flow path 36 via a shut-off valve 34.
- the driving pilot flow path 36 is connected so as to introduce a pilot pressure to the switching valve 14 so as to switch the switching valve 14 to the elevation drive position 14a.
- the switching valve 14 is also connected to a balancing pilot flow path 37 for introducing a pilot pressure for switching the switching valve 14 to the balancing position 14b.
- Cylinder tube 4 of cylinder 2 is connected to pin 4 at one end of lever It is swingable through 0 and is mounted so that the position can be adjusted.
- the lever member 38 is swingably attached to a suspension member 42 mounted on a ceiling or the like via a pin 44.
- a valve body 51 of a pressure regulating valve 50 is attached to the suspension member 42.
- a restoring force mechanism 48 is also integrally incorporated in the valve body 51.
- the pressure regulating valve 50 includes an open position 50 a for opening the control flow passage 18 to the atmosphere, a shutoff position 50 b for shutting off the control flow passage 18, and a pressure source 20 for connecting the control flow passage 18 to the pressure source 20.
- a communication position 50c communicating with the high-pressure channel 49a connected to the high-pressure channel 49a is provided.
- the high-pressure channel 49a is provided with a check valve 49b for preventing backflow.
- FIG. 1 shows a case where the pressure regulating valve 50 is indicated by a JIS symbol
- FIG. 5 is a sectional view showing a specific configuration.
- a pressure regulating chamber 52, an air supply chamber 54, and an exhaust chamber 56 are formed in the pressure regulating valve 5.
- the control flow path 18 is connected to the pressure regulation chamber 52, and the high pressure flow path 49 a is connected to the air supply chamber 54.
- the pressure regulating chamber 52 and the air supply chamber 54 are in communication with each other, and the pressure regulating chamber 52 and the air supply chamber 54 are communicated and shut off by a slidably supported air supply valve 58. It is configured as follows. An exhaust chamber 56 that is open to the atmosphere is communicated with the pressure regulating chamber 52, and the pressure regulating chamber 52 and the exhaust chamber 56 are slidably supported by an exhaust valve body 60. Are configured to be communicated and blocked.
- the valve body 51 is provided with a restoring force mechanism 48 in a body, and the restoring force mechanism 48 includes a diaphragm 64 that partitions a storage hole 62 formed in the valve body 51. The storage hole 62 is partitioned by the diaphragm 6 to form a control room 66.
- the control room 66 communicates with the control channel 18 via the bypass channel 68.
- a rod 70 is integrally attached to the diaphragm 64, and the port 70 penetrates the valve body 51 and protrudes to the outside, and the tip is in contact with the lever member 38.
- the acting force of BX p acts on the lever member 38 at a distance b from the fulcrum pin 4 4. This acting force is configured to act around the fulcrum pin 44 in the same direction as the acting force due to the load of the transported object 1.
- the exhaust valve body 60 When the rod 70 pushes the lever member 38, the exhaust valve body 60 is slid via the stem 72 to the open position 50a where the pressure regulating chamber 52 communicates with the exhaust chamber 56. It is configured to switch.
- the air supply valve body 58 is slid via the stem 72 to connect the pressure regulating chamber 52 to the air supply chamber 54. It is configured to switch to the communication position 50c.
- the biasing force mechanism 74 is attached to the suspension member 42 so as to face the restoring force mechanism 48.
- the biasing force mechanism 74 includes a diaphragm 80 that partitions a storage hole 78 formed in the main body 76, and a biasing chamber 82 is formed in one of the storage holes 78 partitioned by the diaphragm 80. .
- a rod 84 is integrally attached to the diaphragm 80, and the rod 84 penetrates through the main body 76 and protrudes to the outside, and its tip is in contact with the lever member 38. . In the present embodiment, these constitute a reaction.
- An introduction port 86 communicating with the urging chamber 82 is formed in the main body 76, and one end of an introduction channel 88 is connected to the introduction port 86.
- a tank 90 is connected to the other end of the introduction channel 88, and a channel is connected to the introduction channel 88.
- Eck valve 92 and throttle 94 are interposed in parallel. Further, the pilot flow path 16 is connected to the introduction flow path 88 on the tank 90 side of the check valve 92.
- the acting force of CX p acts on the lever member 38 at a distance c from the fulcrum pin 4 4. I have.
- the acting force is configured to act around the fulcrum pin 44 in a direction opposite to the acting force due to the load of the transported object 1.
- the distance between the pin 40 and the fulcrum pin 4 a is a, the pressure receiving area of the working chamber 8 is A, the pressure of the working chamber 8 is p, the load of the transferred object 1 and the hook 9, the rod 6a, the piston 6, etc.
- the total weight of the object moving up and down is W
- the control chamber 66, and the urging chamber 82 are equal, the following equation is established.
- a spring 96 is provided between the suspension member 42 and the lever member 38 so as to balance the downward weight (weight of the cylinder tube 4 and the like) applied to the pins 40 other than the object to be raised and lowered. Are located.
- the transferred object 1 is hung on the hook 9.
- the pilot pressure is supplied to the lifting pilot flow path 27. Therefore, the ascending valve 26 is switched to the open position 26a, and compressed air is supplied from the pressure source 20 to the variable throttle valve 28, the ascending valve 26, the high-pressure channel 22, and the supply / discharge channel 10.
- the working chamber 8 Due to the action of the compressed air supplied to the working chamber 8, the transported object 1 rises via the piston 6 and the rod 6a. At that time, the transferred object 1 rises at a speed according to the setting of the variable throttle valve 28.
- the pilot pressure is introduced into the switching valve 14 through the shuttle valve 34 and the driving pilot flow path 36.
- the switching valve 14 is switched to the elevation drive position 14a. Therefore, compressed air is supplied to the tank 90 via the supply / discharge flow path 10, the switching valve 14, and the pilot flow path 16, and the compressed air is supplied to the biasing chamber 82 via the throttle 94. Supplied.
- the descending valve 30 is switched to the open position 30a. Therefore, the compressed air in the working chamber 8 is discharged into the atmosphere via the supply / discharge flow path 10, the descending valve 30, the variable throttle valve 32, and the low-pressure flow path 24, and the transferred object 1 descends. At that time, the transferred object 1 descends at a speed corresponding to the setting of the variable throttle valve 32.
- the pilot pressure is introduced into the switching valve 14 via the shuttle valve 34 and the driving pilot flow path 36. Then, the switching valve 14 is switched to the elevation drive position 14a. Therefore, compressed air from the tank 90 flows into the atmosphere via the pilot flow path 16, the switching valve 14, the supply / discharge flow path 10, the low-pressure flow path 24, the descending valve 30, and the variable throttle valve 32. Will be released.
- the switching pipe flow is supplied to the switching valve 14. Pilot pressure is supplied via channel 37. Therefore, the switching valve 14 is switched to the balancing position 14b, and the control flow path 18 and the supply / discharge flow path 10 are communicated. However, at this time, if there is a difference between the pressure in the control flow path 18 and the pressure in the pilot flow path 16, a malfunction (rise or fall) occurs. At this time, the position of the pin 40 may be changed by moving along the elongated hole, or the mounting position b of the pressure regulating valve 50 may be changed to satisfy the above-described expression (1).
- the pressure in the control room 66 decreases.
- the swing of the lever member 38 stops, the pressure regulating valve 50 is switched to the shut-off position 50b, and the working chamber 8
- the acting force due to the internal pressure p and the load on the transported object 1 are balanced, and the ascent is stopped.
- the lever member 38 swings around the fulcrum pin 44, and the pressure in the control chamber 66 causes the pressure adjustment valve 50 to open.
- the pressure is switched to 50a, and the compressed air in the working chamber 8 is released into the atmosphere via the supply / discharge flow path 10, the switching valve 14, the control flow path 18, and the pressure regulating valve 50, and is transported. Body 1 descends.
- the pressure change in the urging chamber 8 2 of the urging force mechanism 74 can be reduced when the conveyed object 1 is raised and lowered by hand, and the lever member 38 can be rocked lightly. I can do it.
- the high pressure passage 49 a When the supply of compressed air from the pressure source 20 is stopped by installing a check valve 49 b, the pressure in the control chamber 66 of the pressure regulating valve 50 drops, and it switches to the communication position 50 c side. The transferred object 1 is prevented from falling by its own weight. Further, by providing the auxiliary tank 12 and the throttle 94, it is possible to prevent the occurrence of the rolling operation.
- a cylinder tube 102 of a cylinder 100 is fixed horizontally, and a fixed pulley 104 is rotatably supported by the cylinder tube 102.
- a moving pulley 110 is rotatably supported on a rod 108 integral with the piston 106, and wires 111 that suspend the object 1 are fixed pulleys 104 and a moving pulley 1 ⁇ . After being wrapped around 0, the ends of the wires 1 and 2 are fastened to the pins 40.
- the moving pulley 110 moves, and is subjected to double acting force.
- the carrier 1 can be moved up and down. Therefore, as shown in the following formulas (1a) and (2a), the pressure receiving area of the working chamber 8 is twice as large as the pressure receiving area A of the above-described embodiment, and can be balanced with the transferred object 1.
- the transported object 1 by raising and lowering the transported object 1, the transported object 1 can be raised and lowered with a light force, and the transported object 1 can be moved up and down. 1 can also be kept in balance.
- a speed increasing mechanism 120 may be provided. Using the screw mechanism 122 for the speed-up mechanism 120, wind the wire 126 around the drum 124, and suspend the transferred object 1 on the hook 128 attached to the tip of the wire 126. .
- the cylinder tube 4 is attached to the frame 230 supported by the lever member 38, and the rod 6a is attached to the drum 124 via the thrust bearing 134.
- L is the lead of the screw and D is the drum pitch diameter
- the transported object 1 may be hung on a lever 142 supported swingably around a pin 140. At this time, connect the tip of rod 6 a of cylinder 2 to this lever 14 2.
- E is the distance from the pin 140 to the transported object 1
- e is the distance from the pin 140 to the rod 6a
- the following equation is established. Therefore, it is possible to balance with the transferred object 1 also on the pushing side of the cylinder 2.
- a valve body 152 is slidably supported by a valve body 151.
- the valve element 15 2 is seated on a valve seat 15 5 formed on the valve body 15 1, separated from the valve body 15 2, and shuts off and communicates between the high-pressure flow path 49 a and the control flow path 18. It is configured to be able to.
- the valve element 152 is urged by a coil spring 156 in a direction of sitting on the valve seat 154.
- a housing hole 158 is formed in the valve body 151, and the housing hole 158 is partitioned by a diaphragm 160, and a control chamber 162 is formed on one side.
- the front end of the valve element 152 protrudes into the control room 162, and the rear end of the valve element 152 protrudes to the outside of the valve body 151.
- An exhaust hole 16 4 is formed in the valve body 15 2 in the axial direction thereof, and the exhaust hole 16 4 is formed so that the control chamber 16 2 can communicate with the atmosphere.
- a diaphragm 160 is in contact with the tip of 152, so that the exhaust hole 164 can be closed or opened.
- the pressure receiving area of the diaphragm 160 in the control room 16 2 is formed to be B.
- the pressure regulation chamber 168 is connected to the control flow path 18, and the control chamber 162 is connected to the control flow path 18 via the bypass path 170.
- a spool 18 2 is slidably held by the valve body 18 1 of the pressure regulating valve 180, and the control passage 18 and the high-pressure passage 49
- the communication and cutoff with a and the communication and cutoff with the control flow path 18 and the atmosphere are cut off. It is configured to be interchangeable.
- a control chamber 18 4 is formed at one end of the spool ⁇ 82, and the action of the pilot pressure introduced into the control chamber 18 4 causes the action force to slide the spool 18 2 to act. Is configured.
- the control room 18 4 is formed so that the pressure receiving area becomes B.
- the control room 18 4 is connected to the control channel 18 via a bypass 19 2.
- coil springs 1 8 8 and ⁇ 9 0 are disposed, respectively.
- the coil springs 1 8 8 and 1 9 Spool 18 2 is urged from both sides so that Note that the coil springs 108 and 110 may be provided as needed, and may not necessarily be provided.
- a rod 70 is slidably inserted into the valve body 18 1 on the opposite side of the control chamber 18 4 so that when the rod 70 is pushed in, the spool 18 2 slides. Is configured. As a result, the communication path is switched to the communication position 50c (see FIG. 1) that connects the control flow path 18 and the high-pressure flow path 49a.
- the spool 18 is slid by the operation of the pilot pressure from the control channel 18 introduced into the control room 18 4 to open the control channel 18 to the atmosphere. It is configured so that it can be switched to position 50a (see Fig. 1).
- the air balance device of the present invention can balance with the transported object with a small number of parts, and can switch the pressure adjustment valve with a light force using a lever member, so that air leakage due to bleed can be caused. Since there is no energy loss and the influence of the sliding resistance of the packings of the cylinder is small, the operation of elevating and lowering the transported object can be performed with a small force, so that the operation is easy.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Forklifts And Lifting Vehicles (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002534199A JP4163504B2 (ja) | 2000-10-11 | 2001-08-17 | エアバランス装置 |
KR1020037005076A KR100734661B1 (ko) | 2000-10-11 | 2001-08-17 | 에어 밸런스 장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-310579 | 2000-10-11 | ||
JP2000310579 | 2000-10-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002030806A1 true WO2002030806A1 (fr) | 2002-04-18 |
Family
ID=18790514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/007101 WO2002030806A1 (fr) | 2000-10-11 | 2001-08-17 | Système d'équilibrage par air |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP4163504B2 (ja) |
KR (1) | KR100734661B1 (ja) |
CN (1) | CN1315718C (ja) |
WO (1) | WO2002030806A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010527796A (ja) * | 2007-05-21 | 2010-08-19 | エレクトロ サイエンティフィック インダストリーズ インコーポレーテッド | 電子部品基板をスクライブするために使用されるレーザレンズの流体式釣合い装置 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100668147B1 (ko) * | 2005-04-18 | 2007-01-11 | 주식회사 동성산기 | 무조정 밸런싱 에어 호이스트 시스템 |
CN101403550B (zh) * | 2008-11-18 | 2010-06-09 | 上海理工大学 | 小型气动压力平衡器 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5022186A (ja) * | 1973-06-04 | 1975-03-10 | ||
JPH0921404A (ja) * | 1995-07-05 | 1997-01-21 | Hirotaka Eng:Kk | 圧力調整回路 |
JPH1030609A (ja) * | 1996-04-19 | 1998-02-03 | Hirotaka Eng:Kk | 圧力調整回路 |
JP2000086199A (ja) * | 1998-09-09 | 2000-03-28 | Smc Corp | オールエアバランサ装置 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6430609A (en) * | 1987-07-24 | 1989-02-01 | Otsuka Chemical Co Ltd | Method for removing dissolved oxygen |
-
2001
- 2001-08-17 JP JP2002534199A patent/JP4163504B2/ja not_active Expired - Fee Related
- 2001-08-17 WO PCT/JP2001/007101 patent/WO2002030806A1/ja active Application Filing
- 2001-08-17 KR KR1020037005076A patent/KR100734661B1/ko not_active IP Right Cessation
- 2001-08-17 CN CNB018172911A patent/CN1315718C/zh not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5022186A (ja) * | 1973-06-04 | 1975-03-10 | ||
JPH0921404A (ja) * | 1995-07-05 | 1997-01-21 | Hirotaka Eng:Kk | 圧力調整回路 |
JPH1030609A (ja) * | 1996-04-19 | 1998-02-03 | Hirotaka Eng:Kk | 圧力調整回路 |
JP2000086199A (ja) * | 1998-09-09 | 2000-03-28 | Smc Corp | オールエアバランサ装置 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010527796A (ja) * | 2007-05-21 | 2010-08-19 | エレクトロ サイエンティフィック インダストリーズ インコーポレーテッド | 電子部品基板をスクライブするために使用されるレーザレンズの流体式釣合い装置 |
Also Published As
Publication number | Publication date |
---|---|
KR20030046499A (ko) | 2003-06-12 |
JPWO2002030806A1 (ja) | 2004-02-19 |
CN1469840A (zh) | 2004-01-21 |
CN1315718C (zh) | 2007-05-16 |
JP4163504B2 (ja) | 2008-10-08 |
KR100734661B1 (ko) | 2007-07-02 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR20140097351A (ko) | 유체압 제어 장치 | |
JP4163415B2 (ja) | エアバランス装置 | |
JP5665200B2 (ja) | ゲートバルブのベローズ保護構造 | |
JP4354419B2 (ja) | 圧力補償弁を備えた流量制御弁 | |
WO2002030806A1 (fr) | Système d'équilibrage par air | |
KR20120008711A (ko) | 유압회로 및 유압잭 시스템의 작동방법 | |
JP3558806B2 (ja) | 油圧制御弁装置 | |
JP6576856B2 (ja) | 液圧シリンダの制御装置 | |
JPH08268692A (ja) | リフト装置 | |
JP5628196B2 (ja) | 流量を制御する装置 | |
JPH10331801A (ja) | 油圧制御装置 | |
JPH08303404A (ja) | シリンダ駆動装置 | |
JP5849706B2 (ja) | 昇降装置 | |
JP4343322B2 (ja) | 圧力気体供給装置 | |
JP2001063939A (ja) | 可動シリンダとこれを用いた油圧エレベータ | |
JPH1030609A (ja) | 圧力調整回路 | |
JP2002327706A (ja) | 油圧制御装置 | |
JPS6123921Y2 (ja) | ||
JP2603452Y2 (ja) | エレベータ弁装置 | |
JP2002286002A (ja) | 油圧制御装置 | |
US642742A (en) | Hydropneumatic hoist. | |
JPS5824642B2 (ja) | タンドウアクチユエ−タセイギヨソウチ | |
JP2010065812A (ja) | 空圧昇降シリンダ | |
KR101081562B1 (ko) | 유압식 미터밸브 | |
JPH0438090Y2 (ja) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): CN JP KR SG US |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2002534199 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020037005076 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 018172911 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 1020037005076 Country of ref document: KR |
|
122 | Ep: pct application non-entry in european phase |