JPS5821001A - Electromagnetically controlled working equipment - Google Patents

Abstract

PURPOSE:To quicken excitation-caused output response to an output section, by providing a flow rate control section between a pressure source and each of the output section and an electromagnetic control section for regulating the fluid pessure of the output section, to reduce the unnecessary supply of a pressurized fluid to the pressure source, the output section and the electromagnetic control section. CONSTITUTION:A working fluid from a pressurized fluid source 3 flows to a tank T through the hole 49 of a flow control valve C and chambers 17, 20. When an electromagnet 21 is not energized, a valve element 23 remains stopped where a thrust based on the fluid pressure diffeence between a passage 33 and a chamber 58 becomes equal to that of a spring 57. When the electromagnet 21 is energized, a poppet valve 22 is pushed on a valve seat 39 to heighten the pressure of the chamber 58 to move the valve element 23 leftward to increase the open area of the hole 49. As a result, the pressure of the pressure chamber 17 rises so that a piston 37 is moved when the rightward thrust of the piston has exceeded that of a spring 31. When the sum of the thrust of a spring 32 and that based on the pressure in a valve chamber 19 has exceeded the electromagnetic force, the valve 22 is opened to reduce the open area of the hole 49 by displacement of the valve element 23 to control the pressure of the chamber 17 depending on the exciting current.

Description

DETAILED DESCRIPTION OF THE INVENTION The ζOIl beak is related to an electromagnetic actuating device used for remote control of the accelerator 41 controlled equipment of the Bangkok 4F1 engine.

Conventionally, as a ζ0IIO device, real-1862-124
As shown in Figure 8, the directional control valve O operating device is a Bantsu-maru.

This actuating device includes pressure chambers 5 to 6b formed at both ends of the spool 2 of the directional control valve 1 and connected to the pressure fluid 118 via *D4a and 4b, and the inner pressure chambers ia and 5b connected to an iron core 6.
m, @'h and coils 7a, 7b, electromagnet 8a,
Hole 11 of valve 9a, 9'b operated by iib
1L, 111). The valves 9a and 9b have the pressure chambers 5a and 1bK on one end of which the electromagnet ga and 1lbo pressing force act, and the electromagnet @* and the pressure chamber 5a and IbK on the other end opposite the spool. A spring 1Qas tob t>pressing force is applied to the end surface 2b of the spring 1, which generates a pressing force corresponding to the amount of movement of the spool 2.

The valves a and 9b are connected to the valves 10a and 10b.
The electromagnet 11&*8bO is moved by the pressing force of A, and the EE force 11 ia, in is inserted into the hole 11.
m, 11k Kyoga.

To 4° with #connection to tongue/T, valve 1m, 91
The hole 11aexzb provided in 1 is the electromagnet @a, I
Pressure fluid is introduced into the electromagnets @a, lb in the pressure chamber 5 m, gb (r), which maintains the equilibrium of the fluid pressure acting on the iron cores @a and #b of n. Also, the pressure chamber c, s
The springs 13 to 13'b stretched inside the solenoid valve bowl,
This is to hold the spool 2 in the neutral position shown when the magnet 1 is demagnetized.

The actuating device with this configuration maintains the fluid pressure in the pressure chambers 5 to 6b at the fluid pressure discharged from the pressure fluid source 3 in the state shown in Fig. 2 is held neutrally on the spool.

Now, when a predetermined excitation current is supplied to the electromagnet 7aK, the excitation force acting on the iron core 6aK causes the valve a to resist the pressing force of the springs 1 and 10, and the 70 hole 11& connects the pressure chamber 51 to the tank TK. position, the internal fluid pressure in pressure chamber ia decreases and pressure chambers 5a and 5) and ell
KI1 body pressure 11 is raw.

Therefore, the spring 18a6 is moved to the left by the pressing force KwLl of the spring 18a6 due to the fluid pressure difference.

As the ζO spool 2 moves, the pressing force of the spring 1(n) begins to increase, and the valve 9a becomes tl due to the pressing force of the spring leaO.
When the pressure chambers 5a, tanks τ and O are closed due to the position kOI in the KZ diagram, the pressure chambers 5a and 5'b' are
We have described the case where the fluid pressure becomes the same pressure and the spool 2 stops at that position, above 0, and the excitation current is supplied to the coil 71 of the electromagnet 8a.
When feeding the RA magnetic current, the valve 1 operates in the same manner as the valve 9a, and the spool 2 moves to the right.

In this way, the method for lowering the fluid pressure in the pressure chamber of the first electromagnet according to the strength of the excitation current to the first electromagnet O coil is as follows.
It is necessary to operate the Kh valve from a stopped state under a situation where a fluid pressure of & pressure is applied. When the valve is operated under such conditions, a, the fluid pressure difference acting on the valve and the difference in the coefficient of friction (difference between the static friction coefficient and the dynamic friction coefficient) acting on the valve, IIk, and the solenoid valve. Even if the pressing force on the valve due to the excitation force is small, the amount of movement will change. Therefore, it is important to accurately control the spool.
Bantsue in JII.

I am happy to solve this Oka problem (@Kaimei52-1
11n711-IO-111mfl) Kj-j'-
25K, pressure jJklS turtle, 5'b O waterfall body pressure is controlled by electromagnet 1a, Do-Iru γa, main IIK power supply 1, excitation current Kt, jimaru electric valve time gb, and Zengiki pressure control la. , 1lsKill, the stool 20 of the directional control valve 1 has pressure chambers 6a', ib' formed at both ends of the stool 20.
Electromagnet 8-g116 coil γa.

48841) e Pressure chamber 5a, i
It flows out to Mentate via n valve, 9). And now,
When the electromagnet SaOa is energized, the valve turtle closes the pressure force ia, mental and 〇 thresholds according to the excitation force of the electromagnet $1, so the pressure voltage &, 0 fluid pressure within 1 m' increases. . During this rounding, spool 2 begins to move to the left. This mepool! Due to the 0 $ movement, the pressing force of dne1 and turtle O increases, and when this pressing force of spring IJao becomes stronger than the excitation force of electromagnet 8a, valve 1m becomes pressure chamber 5 and tank! When the fluid pressure in the pressure force a is lowered by connecting the stool 2 to the stool 2, the stool 2 is moved to the right by the pressing force of the spring 1160. As a result of the umbrella operation, the spring 18a O pressing force and the pressure pressing force on the spool 2 due to the fluid pressure in the pressure 115 & (pressure mia') are balanced, and the spool 2 stops at the 9 position. &shi, When the electromagnet @be twilf b is excited, the internal fluid pressure in the pressure nib increases according to the excitation current, and the amount of movement of the spool 2 to the right is controlled.

The actuating device as shown in 8HK is the electromagnet 41m, @b
0:1 Ilf a, f 1) If the magnetic current is not supplied, 11 pressure fluid source 10 discharges pressure fluid, 4 m, 4
b Pressure chamber 1a*ibm valve 11m, tank i via @b
There is a need to let it flow to the country. In this way, the pressure fluid @0
The configuration allows the discharge pressure fluid to flow out to the mentor.

For example, if a plurality of actuators are connected in parallel to the pressure fluid source 3, the pressure fluid source can be connected to a large capacity 04h OK by O flowing out the pressure fluid from all of the plurality of actuation devices l into the tank. It is necessary to do it, ζO for k example, shibori 4
at 4b eIf you increase the amount of stress (make it small), the electromagnet *, @be) Pressure chamber i for the excitation force
a, I) f) Those with Okazaki points, such as changes in pressure rise time, are numbered.

ζO is an output section for connecting to controlled equipment.

and the electromagnetic control *'s that controls the O output go fluid pressure. There is a device which solves the problem of supplying force fluid to the dust part in accordance with the movement of the liquid, and provides a second device.

Hereinafter, Iris 1-1 and its l!
I will explain about No. 111X, which indicates the Department of Mines.

The electromagnetic operation lid actuating device 1s shown in RAID 111- forms one unit of KE force fluid in the cylinder 16, and is a controlled device! LC connects to the output section with Rad 1, and this output section connects to the valve chamber II which is connected via the control section 1. A poppet valve that receives the pressing force of the electromagnet 21 and closes the valve chamber l- is connected to the electromagnetic control valve s1, and the electromagnetic control valve s1, which receives the pressing force of the electromagnet 21. The pressure chamber 17, the electromagnetic control valve IIB, the pressure fluid source 8, and the pressure fluid source 8 are arranged at ID@, and the electromagnetic control valve part B (
A valve body that operates based on the difference between the fluid pressure in the chamber 1 and the output pressure chamber 1! 3 and 11
In Figure 1 (6), it has a flow control valve section C, a partially enlarged view of which is shown.

The output part has 72 pistons that are slidably fitted into the inner hole 2s of the cylinder closure 16, fixed to the left end of the inner hole 210, and have a rad diameter of 1 for passing through the lid goose 6. The piston 21, the inner hole 2s, and the lid 36 form a pressure of 11, and are fixed to the 1 inner hole 2 and the electromagnet 11. S-cylindrical body! Form a spring vehicle weight connected to the wealth 2 through the hatch hole 2. ζO spring wealth 3.%! Spring $11111
Splash 8 Snow is experimental & iζO 1st barre 11 is cylinder body 28 and piston,! Always press the #Ic intermittent screw F/37 to the left. The two springs s2 in the front cylinder are connected to the two pistons and the electromagnetic control valve part Blf (described later), and the plunger 40.
It is provided between the piston 2 and 0 to convert the amount of movement of the fist piston 2 to 0 into a pressing force and transmit it to the plunger 40. and,
The pressing force of the iris spring 810 is due to the body pressure of the pressure chamber ITEM, and when the two pistons move to the right, it will not create any resistance.
The passage 33 connected to the flow rate control valve part ov is opened.

The electromagnetic control valve part 1 is fitted into and fixed in the inner hole 84 of the cylindrical body 180, and is connected to a large diameter inner hole II forming a valve seat 3 and to which a passage 42 is connected, and to this large diameter inner hole SS. The small diameter inner hole 36 of the D intermediate body 37 is connected to the small diameter inner hole 36 of the D intermediate body 37.
A conical surface 41 that is slidably fitted into the valve seat 6 and that is in contact with the Urad 38 that the plunger 40 contacts and the valve seat asKm of the large diameter inner hole 85.
The poppet valve 22 is integrally formed with the iron core 48 of the electromagnet 21, and the large diameter inner hole 86 of the intermediate body 370 and the poppet valve 22 form a flow rate through the holes 44 of the three intermediate bodies. The poppet valve 2 constitutes a valve chamber 19 communicating with the passage 42 connected to the control valve part OK! , the sum of the pressing force of the second spring 32O acting on the plunger 4, the fluid pressure in 4*19, and the pressing force acting on the difference in pressure receiving area between the valve seat 39 and the small diameter inner hole 86 is the right value. This is a configuration in which the pressing force due to the excitation force of the electromagnet 21 acts in the left direction.

The flow rate control valve G is formed integrally with the cylinder 56 as shown in FIG.
1 and the valve 1i of the electromagnetic control valve section B! '
K *It is provided in a valve body 48 having an inner hole 47 to which a continuous passage 42 and a supply port 45 connected to the discharge side of the pressure fluid source 30 are connected and a lid 46 is screwed, and the supply port
46, an inner hole i0 that connects to the passage aaKB, and a hole if that connects to the passage 42.
7, and a sleeve 52 that is slidably provided in the inner hole 5G of this sleeve 52, and a stripe 52 (as shown in FIG. 5 and the irises 1 annular groove 53 and the 2nd annular groove 54 are respectively hole saa
* The valve body 2m has an inner hole b6 that opens through 54a, the right end 23a of this valve body 2m, the inner hole sO, and the lid 4.
*I! is formed by 6#c and connects to the inner hole 6 and the passage 42 via the crest JP55. Then both k.

The valve body 2s is configured to have a dnes7 that constantly presses the valve body 23 to the left at the junction between the right end 28m of the valve body 2s and the lid 46. The right end 23& and the left end 21b of the valve body 23 have the same pressure receiving area, so that both the fluid pressure in the chamber 511 (same pressure as the O fluid pressure in the snow passage 4) and the fluid pressure in the passage 33 are the same. When the pressure is the same, the left end 2H) of the spring 57 receives the pressing force and comes into contact with the stopper 5.
At this moment, I am in position.

The hole of the sleeve 52 is located in the center of the first II-shaped groove 580jiff, and the inner hole 6 of the second annular groove 54 is in a closed position. When passing in the direction of , the fluid pressure in the first passage 13 is
Since the fluid pressure in the chamber b8 increases, the valve body 23 is pushed in the right direction due to the fluid pressure difference between the passage 88 where the valve body 2aK acts and the valve body 68. This pressing force is equal to the pressure force of the lock 670. , the valve body 23 moves to the right and enters the ml annular groove i3.
When the end 5at) of the hole 4 is moved to the right to reduce the area of the hole 4, and the left end 13'b is left in a position where it is out of the hole 4, the gzm-shaped groove i4 connects to the hole i1. hb.

Next, we will discuss the effect of ζO in your example.

When the excitation current is supplied to the electromagnet 11 and the tIA is in the state shown in Fig. 1,
In order to supply the discharge pressure fluid to the supply bow F4I from the pressure fluid source 3e, the pressure fluid is supplied to the flow control valve section 0 hole 49. Rattan 1 annular groove Is, hole! 13 turtles, inner hole S, 97mm, wealth 5 dollars,
Passage 42. The electromagnetic control valve part Be) flows out through the valve chamber 19, the valve seat 3@, and the chamber 20 to the vertical direction. ζOO force According to the flow k of the fluid, the flow rate control valve sCO valve body 2 @ 1ih result *
Passage Is and S that occur when pressure fluid passes through 6s
Due to the pressure difference between the @ and O fluids, the first position groove ssO end Ill ssa moves to the right against the spring I7 and the sleeve 5
The opening area of the hole 4 in 9 is made smaller. The pressure fluid passing through @158 begins to decrease due to the heat.

Valve body! The fluid pressure in passage SS, *S- acting on In this case, the fluid pressure is maintained in response to the pressing force of the spring 67, and it acts on the ζO waterfall body pressure output part M0 pressure m17 to generate a pressing force on the piston 27, but this pressing force is Since the spring 31 is weaker than the spring 31, the three output pistons can be stopped at the position shown in FIG.

Next, the electromagnet of the solenoid control valve part 1! When 1 is energized, the iron S4s of the electromagnet 21 presses the poppet valve t1 to the left, and the poppet valve $! o The conical image 41 is in close contact with the valve seat 11, and the valve chamber 1.
Valve chamber 19. Passage 42. room i
s Internal fluid pressure increases. Due to this increase in body pressure, the flow control valve - 〇〇valve body 2s Hiro moves to the left by the pressing force of the spring J5TO, and the first annular vssso end ssb
through the hole 490-port ii*. Questions are a waste of time 3. When the OI 1 body pressure inside the output section 111 pressure chamber 111 also increases, and the pressing force of the piston 71 to the right due to the fluid pressure acting on the pressure chamber 17 exceeds the pressing force of the first spring 31, the piston 27
moves to the right, but the moving speed of Jin O and 110 is
The speed increases depending on the size of the meeting. Due to the movement of the piston 21G, the pressing force of the first spring 31O increases, and the fluid pressure in the pressure chamber 17 also rises and becomes narrower. i1*ri5 violence i118 m electromagnetic control valve part BD Benko! It affects the meeting.

It's a solenoid control valve part Bt) poppet valve! For 2.

8) Increased by the movement of the screw) 21TO
The added value of the pressing force of 10 and the pressing force of the valve chamber 15 PIO fluid pressure acts on the excitation force acting on the solenoid valve 110 iron $41. When the added value exceeds the excitation force, the poppet valve is activated! The snow cone 1N41 begins to separate from the valve seat 3, forming valves 1119, 1j120 and 08KllN-, allowing a portion of the pressure fluid in the valve chamber 1 to flow out to the chamber.

ζ〇9th, C fluid pressure inside valve 1i111 is electromagnet z10
The valve body 23 of the flow rate control valve portion C is controlled in accordance with the excitation force, and at this time, the valve body 23 of the flow rate control valve portion C is connected to the end 11g of the 111th shape 6s.
This reduces the opening area of the hole 49. In this way, the fluid pressure in one pressure chamber of the output section BE is controlled by the electromagnetic control valve section BE.
)electromagnet! Since it is supplied with IK power, it is controlled to a value according to the excitation current, and it stops at a position where the two pistons, the fluid pressure in the pressure chamber one, and the pressing force of the first spring are in equilibrium.

As can be explained with one shutoff, the fluid pressure in the output section M O pressure i11γ is 4 PET valves! The pressing force of the iron core 41 due to the excitation force of the electromagnet 21 acting on the urn 1, the pressing force due to the pressure of the O#1 body inside the valve chamber 19 acting inwardly to this pressing force, and the movement of one piston cause the urn to move. There is also a value K that balances the added value with the pressing force of the second spring 816. Therefore, the action of the second spring s20 is such that when there is a large variation in the load connected to the output section 18, the added value is applied to the position of the screw cylinder 2, and the fluid in the pressure chamber 1 is O also plays an auxiliary role in raising or lowering the pressure. This rounding 1 For example, when carrying out engineering control, when the load acting on the output section 1TaK changes with a certain opening, the ζO building spring 31 is May be omitted.

When #2155 of the valve element O8 of the flow control valve C is closed by an O cylinder in the pressure fluid, the fluid pressure in the passage 33 increases O''e, and the valve element 2s moves to the right. left end 21
When the 1m reaches the position where it is out of hole 49, it is 3 years old and 5 years old.
4 is connected to the valve 11, and the passage hole 1 is connected to the inner hole 56 of the valve body 3.
, the hole 54a is connected to the second annular groove 641 to prevent the output section OG4 from operating.

As I can say above, KO! i is the output part and this output g
o A flow control valve section is provided between each of the electromagnetic control sections O for controlling the fluid pressure and the pressure fluid source, and when the excitation current O supplied to the electromagnetic control valve section by the ζO waterfall amount control valve 11 is t1Z%,
The flow rate of pressure fluid supplied to the pressure fluid source, the output section, and the electromagnetic control section is reduced, and when the excitation current is insufficient to feed the electromagnetic control section, the flow rate of pressure fluid O supplied to the output section is increased by 1. Therefore, it has the effect of reducing unnecessary outflow of pressure fluid and speeding up the response of the output section to the exciting electric current.

[Brief explanation of the drawing]

$111 (transfer) is an example of an example by Oyaha.
□Figure 1 (2) is an enlarged view of the main parts of Figure 1-), Figure 2 and Figure 2 are schematic diagrams of the prior art. 3...Spool 3...Pressure fluid source

Claims (1)

[Claims] (1) In order to form a pressure chamber connected to a pressure fluid source via a flow rate control valve part with a pressure chamber connected to a clutch and a controlled 1111 with a piston, the output part and the ζ0 output me pressure force are pre-distributed. The pet valve that controls the fluid pressure in the valve lIm and ζ0 valve connected via the control valve according to the output of the electromagnet is a beautiful electromagnetic control front part. The mirror flow rate control Imo is controlled by the pressing force of the iris 1 due to the 0 fluid pressure in the above-mentioned upper part It is equipped with a valve body on which the pressing force of the pressure thorn whale and the ate pressing force, which is a value calculated by ○, act. Pressure fluid source, pressure chamber and OIIK
Me is configured with a large electromagnetic operation excitation device.