CN1469840A - Air balance device - Google Patents

Air balance device Download PDF

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Publication number
CN1469840A
CN1469840A CNA018172911A CN01817291A CN1469840A CN 1469840 A CN1469840 A CN 1469840A CN A018172911 A CNA018172911 A CN A018172911A CN 01817291 A CN01817291 A CN 01817291A CN 1469840 A CN1469840 A CN 1469840A
Authority
CN
China
Prior art keywords
pressure
valve
stream
upside down
guiding
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CNA018172911A
Other languages
Chinese (zh)
Other versions
CN1315718C (en
Inventor
木村登
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HIROTAKA ENGINEERING Ltd
Original Assignee
HIROTAKA ENGINEERING Ltd
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
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Publication of CN1469840A publication Critical patent/CN1469840A/en
Application granted granted Critical
Publication of CN1315718C publication Critical patent/CN1315718C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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

Abstract

An air balance system which is easy to operate and can be kept in balance with a body to be conveyed with a simple structure. A pressure regulating valve (50) is provided that regulates a pressure in a supply/exhaust flow path (10) to a pressure countering against the weight of the body (1) to be conveyed. A switching valve (14) is provided that allows the supply/exhaust flow path (10) and a control flow path (18) to communicate with each other when in balance, and the flow path (10) and a pilot flow path (16) to communicate when in a rise/fall drive. A body (1)-suspending cylinder (2) is attached to a lever member (38) supported on a fulcrum pin (44). A restoring force mechanism (48) for imparting an acting force, in the same direction as that of the load of the body (1), to the lever member (38) is provided in the vicinity of the fulcrum pin (44), and an energizing mechanism (74) for imparting to the lever member (38) an acting force in balance with the weight of the body (1) and with the acting force of the restoring force mechanism (48) is provided. The pressure regulating valve (50) supplies/exhausts compressed air to/from the flow path (10) according to an acting force by the rocking of the lever mechanism (38) and an acting force by the introduction of a pilot pressure from the control flow path (18).

Description

Air balance device
Technical field
The present invention relates to be handled upside down the air balance device of object by making the weight that is handled upside down object put up a resistance to sling with the pressure of supplying with to cylinder.
Background technology
Now, as everyone knows, open described in the flat 10-30609 communique as the spy, the weight that has adopted handle to be handled upside down object affacts the structure in the counteraction chamber that is separated by barrier film, and this device changes according to the pressure of the pressure chamber that is caused by changes in weight, switches main valve, from the application chamber air supply of pressure source to cylinder, or application chamber to the interior pressure of atmosphere opening with the control action chamber, make the weight that is handled upside down object and the force balance of cylinder, be handled upside down object thereby sling.
But described conventional device makes piston overcome the sliding resistance of sealing element etc. in the cylinder and slides when lifting is handled upside down object, if do not increase and decrease the volume of application chamber, main valve just can't carry out switch, therefore exists descending operation heavy, the problem of operating difficulties.In addition, the switching of the main valve of the sensed pressure change of prior art, owing to exit for preventing differential (resistance difference of rise and fall during balance) (switching of main valve is to reduce differential influence to existing two positions twin valve by venting), under the air state of constantly releasing, carry out, so there is the problem of a large amount of waste energy.In addition, owing to being set, multiple valve makes the device complexity.
Summary of the invention
Problem of the present invention provides processing ease, and utilize simple result can with the air balance device that is handled upside down the object balance.
To achieve the object of the present invention, the present invention takes following technical measures for addressing the above problem.
Air balance device of the present invention has pressure regulating valve, its application chamber bonded assembly with the cylinder that is handled upside down object up-down adjusts to the described pressure that is handled upside down weight of object of opposing for the pressure on current drainage road, makes the application force and the weight balancing that is handled upside down object of described cylinder.
Be provided with and when balance, make described current drainage road and the control stream connected sum given when lifting drives, make described giving in current drainage road and the transfer valve that guides stream to be communicated with, when described lifting drives, supply with or the discharge pressurized air to the described current drainage road of giving by variable throttle valve, make the described lift valve mechanism that is handled upside down object up-down.
In addition, be positioned near the fulcrum pin, described cylinder is being installed on Zhi Cheng the fork parts swingably.
In addition, near fulcrum pin, be provided with by the guiding that imports from described control stream and press, that apply to described fork parts and the described restoring force mechanism that is handled upside down the equidirectional application force of weight of object, depended on pressure mechanism also is set simultaneously, it is applied to described fork parts with application force by the pressurized air that imports from the gas cylinder that is communicated with described guiding stream, and this application force makes described weight of object and the described restoring force mechanism force balance of being handled upside down.
In addition, described pressure regulating valve correspondence is supplied with or the discharge pressurized air by the described current drainage road and described control stream and described transfer valve given by the application force of described fork parts swing generation and the application force of being pressed by the guiding that imports from described control stream.
Described lift valve mechanism also can be provided with: utilize to import guiding and press, be communicated with pressure source and described rising threshold of giving the current drainage road by variable throttle valve; Utilize to import the guiding pressure, be communicated with atmosphere and the described lowering valve of giving the current drainage road by variable throttle valve.In addition, described depended on pressure mechanism also can be provided with the pressured chamber that is communicated with described gas cylinder, by importing the application force that pressurized air is pressed in the pressured chamber application force is applied to described fork parts.
Description of drawings
Fig. 1 is the summary construction diagram of the air balance device of one embodiment of the invention;
Fig. 2 is the main portion summary construction diagram of the air balance device of second embodiment of the invention;
Fig. 3 is the main portion summary construction diagram of the air balance device of third embodiment of the invention;
Fig. 4 is the main portion summary construction diagram of the air balance device of fourth embodiment of the invention;
Fig. 5 is the section-drawing of present embodiment pressure regulating valve;
Fig. 6 is the section-drawing of another embodiment pressure regulating valve;
Fig. 7 is the section-drawing of other embodiment pressure regulating valve.
The specific embodiment
Below describe embodiments of the present invention with reference to the accompanying drawings in detail.
Be constructed as follows as shown in Figure 1,1 for being handled upside down object, suspends in midair and be bearing on the cylinder 2.In the cylinder liner 4 of cylinder 2, can be slidably inserted into piston 6.When application chamber 8 that compressed-air supply is made of cylinder liner 4 and piston 6, the application force that piston 6 is risen works.In addition, be handled upside down object 1 and be suspended on the hook 9 for hook 9 being installed on the bar 6a of one, can making with piston 6.
In application chamber 8, connect an end of giving current drainage road 10, auxiliary gas cylinder 12 is installed in giving current drainage road 10.Be connected for the other end on current drainage road 10 with transfer valve 14.Transfer valve 14 is pilot operationp formulas, have with the lifting activation point 14a that is communicated with for current drainage road 10 and guiding stream 16 and with give current drainage road 10 and control the balance position 14b that stream 18 is communicated with.
In the high pressure stream 22 bonded assemblys while of being communicated with for current drainage road 10 with pressure source 20, also be connected in the high pressure stream 22 with the low pressure stream 24 that communicates with atmosphere, install lift valve 26 and variable throttle valve 28.Rising threshold 26 has by rising and imports guiding when pressing with guiding stream 27, the open position 26a that is communicated with high pressure stream 22 and do not import the make position 26b that blocks high pressure stream 22 when guiding pressure gas.
At low pressure stream 24 lowering valve 30 and variable throttle valve 32 are installed.Lowering valve 30 has by descending and imports guiding when pressing with the guiding stream, the open position 30a that is communicated with low pressure stream 24 and importing when guiding pressure gas, and that blocks low pressure stream 24 closes position 30b.In addition, at present embodiment, constitute lift valve mechanism by rising threshold 26, variable throttle valve 28, lowering valve 30, variable throttle valve 32.
Rise and be connected with guiding stream 36 with pressured by reciprocable valve 34 with guiding stream 31 with descending with guiding stream 27.Pressured with guiding stream 36 transfer valve 14 being switched to lifting activation point 14a, and connect to the mode that transfer valve 14 imports the guiding pressure.In addition, in transfer valve 14, also guide the balance of pressing to be connected with guiding stream 37 with transfer valve 14 being switched to balance position 14b and importing.
The cylinder liner 4 of cylinder 2 is at an end of fork parts 38, can swing and be installed as by pin 40 and can adjust the position.By being installed on the fulcrum pin 44 of the sprung parts 42 on top etc., fork parts 38 are installed as and can swing.
The valve body 51 of pressure regulating valve 50 is installed on this sprung parts 42.On valve body 51, be assembled into one with restoring force device 48.Pressure regulating valve 50 have with control stream 18 to the release position of atmosphere opening 50a, block control stream 18 disconnect position 50b with will control the connection position 50c of stream 18 with the high pressure stream 49a connection that is being connected pressure source 20.The test valve 49b that prevents adverse current is installed at high pressure stream 49a.
In addition, Fig. 5 illustrates the concrete structure of the described pressure regulating valve 50 of expression.Fig. 1 represents pressure regulating valve 50 with the JIS label, and Fig. 5 is the section-drawing of expression concrete structure.
In the valve body 51 of pressure regulating valve 50, form surge-chamber 52, air supply chamber 54, exhaust chamber 56.In surge-chamber 52, connect control stream 18, in air supply chamber 54, be communicated with high pressure stream 49a.
Surge-chamber 52 and air supply chamber 54 are communicated with, and its structure is: by the air feed valve body 58 that slidably supports, make the blocking-up of surge-chamber 52 and air supply chamber 54 connected sums.In addition, be communicated with exhaust chamber 56 to atmosphere opening in surge-chamber 52, its structure is: the exhaust valve 60 by slidably supporting makes surge-chamber 52 and the blocking-up of exhaust chamber 56 connected sums.
In valve body 51, restoring force device 48 is set to one, and restoring force device 48 has the diaphragm 64 of the accepting hole 62 that separation is provided with in valve body 51.Separate accepting hole 62 by diaphragm 64 and form control cabin 66.Control cabin 66 is communicated with control stream 18 by bypass flow path 68.
Diaphragm 64 is installed as one with bar 70, and bar 70 connects with valve body 51 and be outwards outstanding, and its front end contacts with fork parts 38.The compression area of diaphragm 64 is made as B, when the pressure of control cabin 66 is made as p, the effort of B * p on fork parts 38 from the position of fulcrum pin 44 distance b.In addition, the formed effect of this application force is near fulcrum pin 44, and is equidirectional with the application force that is handled upside down object 1.
The valve rod 72 that is arranged on the pressure regulating valve 50 runs through exhaust valve 60, and its front end is installed on the diaphragm 64.The effect of pressing by the guiding that imports control cabin 66 and the rear end of bar 70 touch.When bar 70 pushing fork parts 38, make exhaust valve 60 slips and form the release position 50a that switches to connection surge-chamber 52 and exhaust chamber 56 by valve rod 72.In addition, when bar 70 is subjected to the pushing of fork parts 38, by valve rod 72 air feed valve body 58 is slided, and form the connection position 50c that switches to connection surge-chamber 52 and air supply chamber 54.
The depended on pressure mechanism 74 relative with restoring force device 48 is installed in sprung parts 42.Depended on pressure mechanism 74 has the diaphragm 80 of the accepting hole 78 that separation forms on body 76, the pressured chamber 82 of a square one-tenth of the accepting hole of being separated by diaphragm 80 78.Be installed to be one at diaphragm 80 upper booms 84.It is outstanding to the outside that bar 84 runs through body 76, and its front end contacts with fork parts 38.At present embodiment, constitute actuator thus.
In body 76, form the introducing port 86 that is communicated with pressured chamber 82, be connected with an end that imports stream 88 at introducing port 86.Be connected with gas cylinder 90 at the other end that imports stream 88, importing stream 88 installation check valve 92 arranged side by side and flow regulating valve 94.In addition, guiding stream 16 also is connected with the importing stream 88 of gas cylinder 90 1 sides by test valve 92.
The compression area of diaphragm 80 is made as C, when the pressure of pressured chamber 82 is made as p, the position from fulcrum pin 44 distance c of the effort of C * p on fork parts 38.In addition, the formed effect of this application force is near fulcrum pin 44, and is equidirectional with the application force that is handled upside down object 1.
To sell 40 and fulcrum pin 44 between distance be decided to be a, the compression area of application chamber 8 is decided to be A, the pressure of application chamber 8 is decided to be p, the gross weight of weight that is handled upside down object and lifting objects such as hook 9, bar 6a, piston 6 is decided to be W, when each pressure of application chamber 8, control cabin 66, pressured chamber 82 equates, below two formulas set up.
In addition, be applied to weight downward beyond the lifting object on the pin 40 weight such as () cylinders 4, configuration spring 96 between sprung parts 42 and fork parts 38 for balance.
aA+bB＝cC ...(1)
W＝pA ...(2)
a＞b
The below action of the described air balance device of explanation.
At first, as shown in Figure 1, on hook 9, hang and be handled upside down object 1.Then, when driving lifting, press with guiding stream 27 financial-supply-leadings to rising.Like this, rising threshold 26 switches to open position 26a, passes through variable throttle valve 28, rising threshold 26, high pressure stream 22, supplies with application chambers 8 for current drainage road 10 from the pressurized air of pressure source 20.The effect of pressing by the pressurized air that supplies in the application chamber 8 makes by piston 6, bar 6a to be handled upside down object 1 and to rise.At this moment, the speed of corresponding variable flow regulating valve 28 settings is handled upside down object 1 rising.
In addition, because to rising with guiding stream 27 financial-supply-leading fluids, by reciprocable valve 34, the pressured guiding stream 36 of using, guiding is pressed and imported transfer valve 14, transfer valve 14 switches to lifting activation point 14a.Like this, when giving current drainage road 10, transfer valve 14, guiding stream 16 with compressed-air supply gas cylinder 90, by flow regulating valve 94 with the pressured chamber 82 of compressed-air supply.
After being handled upside down object 1 and rising to specified altitude, stop to rising with 27 financial-supply-leading fluid and the exhausts of guiding stream, then rising threshold 26 switches to and closes position 26b.Like this, high pressure stream 22 is blocked, by the pressure p in the application chamber 8 application force that produces and the weight balancing (formula (2) establishment) that is handled upside down object 1.In addition by application chamber 8, give current drainage road 10, guiding stream 16, import stream 88, gas cylinder 90, pressured chamber 82 form C/LOOP, these pressure p all equate.
On the other hand, when driving lifting, when descending with guiding stream 31 financial-supply-leadings pressure, lowering valve 30 switches to open position 30a.Like this, the pressurized air of application chamber 8 is handled upside down object 1 and descends by arranging in atmosphere to current drainage road 10, lowering valve 30, variable throttle valve 32, low pressure stream 24.At this moment, the speed of corresponding variable flow regulating valve 32 settings is handled upside down object 1 decline.
In addition, because to descending with guiding stream 31 financial-supply-leading fluids, by reciprocable valve 34, the pressured guiding stream 36 of using, guiding is pressed and imported transfer valve 14, transfer valve 14 switches to lifting activation point 14a.Like this, by guiding stream 16, transfer valve 14, giving current drainage road 10, low pressure stream 24, lowering valve 30, variable throttle valve 32, pressurized air is arranged in atmosphere from gas cylinder 90.
After being handled upside down object 1 and dropping to specified altitude, stop to descending with 31 financial-supply-leading fluid and the exhausts of guiding stream, lowering valve 30 switches to and closes position 30b.Therefore, low pressure stream 24 is blocked, by the pressure p in the application chamber 8 application force that produces and the weight balancing (formula (2) establishment) that is handled upside down object 1.In addition, by application chamber 8, give current drainage road 10, guiding stream 16, import stream 88, gas cylinder 90, pressured chamber 82 form C/LOOP, these pressure p are equal.
At fork parts 38, near fulcrum pin 44, when correspondence is handled upside down the effect of application force of the application force of weight of object 1 and restoring force device 48, also be subjected to the effect of the application force of depended on pressure mechanism 74 in contrast to this.During 38 swings of fork parts, switch pressure regulating valve 50, the pressure of the pressure of control cabin 66 and application chamber 8 equates that described (1) formula is set up, near the force balance the fulcrum pin 44 of fork parts 38.
Be handled upside down object 1 lifting not utilizing pressurized air to press to make, and directly lift or descend when being handled upside down object 1 etc. and being in balance, will guide with guiding stream 37 by balance and press supply transfer valve 14 by operating personal.Therefore, transfer valve 14 switches to balance position 14b, controls stream 18 and is communicated with for current drainage road 10.If have difference of pressure but control this moment between stream 18 and the guiding stream 16, misoperation (rise or descend) then can take place.At this moment, also can move the position of pin 40 along elongated hole and change, perhaps change the installation site b of pressure regulating valve 50, as long as it is just passable that described (1) is set up.
When balance,, lift and be handled upside down object 1, cylinder 2 etc. making when being handled upside down object 1 and rising.Thus, fork parts 38 switch to connection position 50c around fulcrum pin 44 swings by bar 70 pressure regulating valves 50.From pressure source 20, by high pressure stream 49a, pressure regulating valve 50, control stream 18, give current drainage road 10, improve the pressure of application chamber 8 with compressed-air supply application chamber 8, make to be handled upside down object 1 and to rise.Simultaneously, also supply with control cabin 66 by control stream 18, bypass flow path 68 pressurized airs, pressure rises.Lifting when being handled upside down object 1, the application force that must resist restoring force device 48 lifts, and by fork parts 38, can lift with the light power of b/a.
When stopping to lift, accept application force, swing around fulcrum pin 44 by bar 70 fork parts 38 by the supply pressure p that imports control cabin 66.At this moment, pressure regulating valve 50 switches to release position 50a, is discharged into the atmosphere from the pressurized air of control cabin 66.
Therefore, the pressure decay in the control cabin 66.Then, when reaching the pressure p of described (1) formula establishment, fork parts 38 stop to shake, and pressure regulating valve 50 switches to disconnect position 50b.In addition, make the pressure p in the application chamber 8 application force that produces and the weight balancing that is handled upside down object 1, rising stops.
On the other hand, when making declines such as being handled upside down object 1, cylinder 2, fork parts 38 are around fulcrum pin 44 swings, effect by control cabin 66 internal pressures, pressure regulating valve 50 switches to release position 50a, pressurized air in the application chamber 8 is discharged in atmosphere by giving current drainage road 10, transfer valve 14, control stream 18, pressure regulating valve 50, is handled upside down object 1 and descends.
When stopping to descend, the application force of the pressure p of the pressured chamber 82 of acceptance importing depended on pressure mechanism 74 is swung around fulcrum pin 44 by bar 84 fork parts 38.At this moment, switch to position disconnect position 50b by bar 70 pressure regulating valves 50, then, described (1) formula is set up, and fork parts 38 stop to shake.In addition, make application force that is produced by the pressure p in the application chamber 8 and the total weight W balance that is handled upside down the weight of object 1, decline stops.
By gas cylinder 90 is set, make with hand when being handled upside down object 1 lifting, it is little that pressure in the pressured chamber 82 of depended on pressure mechanism 74 are changed, and rocking pendulum rod unit 38 lightly.In addition, on high pressure stream 49a test valve 49b is set, stops when pressure source 20 is supplied with pressurized airs, the pressure decay in the control cabin 66 of pressure regulating valve 50 switches to and is communicated with position 50c side and can prevents to be handled upside down object 1 and fall because of own wt.Further, by auxiliary gas cylinder 12, cutoff port 94 are set, (ヒ PVC リ) moving generation can prevent to shake.
Below, in conjunction with the air balance device of Fig. 2 explanation second embodiment different with described embodiment.In addition, for the identical parts of described embodiment air balance device, give same numbering and omit specific description.Handle too later on.
In this second embodiment, cylinder liner 102 horizontal fixed of cylinder 100, fixed pulley 104 is supported by cylinder block 102 with rotary way.Movable pulley 110 at bar 108 rotatably supports that become one with piston 106.After the steel wire 112 that suspension is transported body 1 was hung on fixed pulley 104 and the movable pulley 110, the fixing peace of the front end of steel wire 112 was connected on the pin 40.
In the space of the application chamber 114 of cylinder 100, by supplying with for current drainage road 10 or discharging pressurized air, movable pulley 110 is moved, can make with the two-fold application force and be handled upside down object up-down.Therefore, shown in following (1a), (2a) formula, the compression area of application chamber 8 is twices of foregoing embodiment compression area A, can make to be handled upside down object 1 balance.
At second embodiment, also identical with foregoing embodiment, be handled upside down object 1 and can make with light power and be handled upside down object 1 lifting by lifting or descending, can keep making simultaneously the state that is handled upside down object 1 balance.
(A/2)×a+b×B＝c×C ...(1a)
p×A/2＝W ...(2a)
a＞b
In addition, the 3rd embodiment as shown in Figure 3 also can be provided with speed increasing mechanism 120.Adopt thread mechanism 122 at speed increasing mechanism 120, winding steel wire 126 on cylinder 124, hang on the hook 128 that the front end of steel wire 126 is installed and are handled upside down object 1.In addition, cylinder block 4 is installed on the framework 230 that is supported by fork parts 38, bar 6a is installed on the cylinder 124 by thrust bearing 134.At this, L is the pitch of double-screw bolt, and D is the cylinder pitch circle diameter, and then following formula is set up.Use this speed increasing mechanism 120, can speedup by pressured cylinder 2.
(L/πD)×A×a+b×B＝cC ...(1b)
(p×L×A)/(π×D)＝W ...(2b)
a＞b
Further, the 4th embodiment as shown in Figure 4, also can be handled upside down object 1 be suspended on around pin 140 can the lever 142 of swinging mounting on.At this moment, the front end of the bar 6a of cylinder 2 is connected with lever 142.At this, establishing E is that e is the distance from pin 140 to bar 6a from pin 140 to the distance that is handled upside down object 1, and then following formula is set up.Thus, the pushing side of cylinder 2 also can be handled upside down object 1 balance.
(e/E)×A×a+b×B＝c×C.........(1c)
(e/E)×p×A＝W.........(2c)
a＞b
Below, the pressure regulating valve 150 of another embodiment is described with reference to Fig. 6.
On the valve body 151 of pressure regulating valve 150, support valve body 152 slidably.Valve body 152 is communicated with by taking a seat to the valve seat 154 that forms on valve body 151 and break away from, can forming and blocking-up high pressure stream 49a and the structure of controlling stream 18.Valve body 152 is pressured to valve seat 154 direction of taking a seat by coil spring 156.
Form accepting hole 158 at valve body 151, accepting hole 158 is separated by diaphragm 160, and a side forms control cabin 162.Front end at control cabin 162 inner valve bodies 152 is outstanding, and the rear end of valve body 152 is projected into the outside of valve body 151.
In valve body 152, become deflation hole 164 at its direction of principal axis breakthrough form, deflation hole 164 forms the structure that control cabin 162 is communicated with atmosphere.Front end at valve body 152 forms contact diaphragm 160, can close or open the structure of deflation hole 164.In addition, the compression area of the diaphragm 160 in the control cabin 162 is B.Surge-chamber 168 is connected with control stream 18, and control cabin 162 is connected with control stream 18 by by pass line 170.
Present embodiment 150 in, bar 70 is subjected to the pushing of fork parts 38, and valve body 152 is slided, and leaves from valve seat 154, switches to the connection position 50c (referring to Fig. 1) that connects high pressure stream 49a and control stream 18 by surge-chamber 168.In addition, the guiding that imports in the control cabin 162 presses when rising, and makes diaphragm 160 leave the front end of valve body 152, and control stream 18 is switched to the release position 50a (with reference to Fig. 1) that is communicated with deflation hole 164 by by pass line 170, control cabin 162.
Below, in conjunction with Fig. 7 the pressure regulating valve 180 of another embodiment is described.
On the valve body 181 of pressure regulating valve 180, support guiding valve 182 slidably.Slip by guiding valve 182 forms control stream 18 and the connection of high pressure stream 49a and the switching of blocking-up, and control stream 18 and the connection of atmosphere and the switching of blocking-up.
In addition, form control cabin 184 at an end of guiding valve 182, the effect of the pilot pressure by importing control cabin 184 forms the structure that the application force that makes slide slide 182 works.Control cabin 184 becomes compression area B.Control cabin 184 is connected with control stream 18 by by pass line 192.
Both end sides at guiding valve 182 is placed with coil spring 188,190 respectively.Coil spring 188,190 becomes blocking position 50b (with reference to Fig. 1) for making guiding valve 182, and guiding valve 182 is pressed from both sides.In addition, this coil spring 108,110 can be provided with as required, also can not be provided with.
In valve body 181, can be slidably inserted into bar 70 on the opposite of control cabin 184, form the structure that guiding valve 182 is slided.Thus, switch to and to control the connection position 50c (with reference to Fig. 1) that stream 18 and high pressure stream 49a are communicated with.In addition,, guiding valve 182 is slided, switch to control stream 18 to the release position of atmosphere opening 50a (with reference to Fig. 1) by the effect of pressing by the guiding of the control stream 18 that imports control cabin 184.
The present invention is not limited only to above these embodiments, can implement various forms without departing from the spirit and scope of the present invention.
Above-described air balance device of the present invention is when using few parts just can balance to be handled upside down object, by using fork pressure regulating valve to be switched with lighter strength, can not waste energy with escape of air, owing to reduced the sliding resistance of the sealing element of cylinder, can realize with very little strength at an easy rate to being handled upside down the effect that object carries out descending operation.

Claims (3)

1, a kind of air balance device, have pressure regulating valve, its application chamber bonded assembly with the cylinder that is handled upside down object up-down adjusts to the described pressure that is handled upside down weight of object of opposing for the pressure on current drainage road, makes the application force and the weight balancing that is handled upside down object of described cylinder, it is characterized in that, comprising:
Transfer valve, it makes described current drainage road and the control stream given be communicated with when balance, and the described current drainage road of giving is communicated with the guiding stream; Also have simultaneously,
Lift valve mechanism when it drives in described lifting, supplies with or the discharge pressurized air to the described current drainage road of giving by variable throttle valve, makes the described object up-down that is handled upside down; In addition,
Described cylinder, it is positioned near the fulcrum pin, is installed on the fork parts of supporting swingably; And then,
Restoring force mechanism, it is arranged near the fulcrum pin, presses by importing guiding from described control stream, applies and the described equidirectional application force of weight of object that is handled upside down to described fork parts; Depended on pressure mechanism is set simultaneously, and it is applied to described fork parts with application force by the pressurized air that imports from the gas cylinder that is communicated with described guiding stream, and this application force makes described weight of object and the described restoring force mechanism force balance of being handled upside down, in addition,
Described pressure regulating valve, its correspondence are supplied with or the discharge pressurized air by the described current drainage road and described control stream and described transfer valve given by the application force of described fork parts swing generation and the application force of being pressed by the guiding that imports from described control stream.
2, air balance device as claimed in claim 1 is characterized in that, described lift valve mechanism is provided with: rising threshold, and it utilizes and imports guiding and press, and is communicated with pressure source and the described current drainage road of giving by variable throttle valve; Lowering valve, it utilize to import guiding and presses, by variable throttle valve be communicated with atmosphere with described to the current drainage road.
3, air balance device as claimed in claim 1 or 2 is characterized in that, described depended on pressure mechanism is provided with the pressured chamber that is communicated with described gas cylinder, and the application force of the pressurized air pressure by importing pressured chamber is applied to described fork parts with application force.
CNB018172911A 2000-10-11 2001-08-17 Air balance device Expired - Fee Related CN1315718C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP310579/2000 2000-10-11
JP2000310579 2000-10-11
JP310579/00 2000-10-11

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Publication number Priority date Publication date Assignee Title
CN101403550B (en) * 2008-11-18 2010-06-09 上海理工大学 Miniature pneumatic pressure balancer

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KR100668147B1 (en) * 2005-04-18 2007-01-11 주식회사 동성산기 Balancing air hoist system without control
US7602562B2 (en) * 2007-05-21 2009-10-13 Electro Scientific Industries, Inc. Fluid counterbalance for a laser lens used to scribe an electronic component substrate

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JP4224836B2 (en) * 1998-09-09 2009-02-18 Ｓｍｃ株式会社 All air balancer equipment

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101403550B (en) * 2008-11-18 2010-06-09 上海理工大学 Miniature pneumatic pressure balancer

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KR100734661B1 (en) 2007-07-02
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CN1315718C (en) 2007-05-16
JP4163504B2 (en) 2008-10-08

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