JPS5948363A - Power unit device for hydraulic elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

[Technical Field of the Invention] The present invention relates to a power unit □ device for a hydraulic elevator. [Technical Background of the Invention] In recent years, even in Japan, 1ilfi has been used as an elevator for warehouses and condominiums with few floors.
Simple hydraulic elevators are becoming widespread. There are two types of hydraulic elevators: the surface type, in which the jack is located under the car and raises and lowers the car directly, and the LTL type, in which the jack is placed at the bottom of the car and raises and lowers the car directly, and the LTl type, in which the jack is moved at the corner to raise and lower the car. FIG. 1 schematically shows a direct hydraulic elevator, and in a machine room 2 adjacent to a hoistway 1 there is a power unit 3 that is a drive source for the hydraulic elevator. Then, the IV oil generated in the power unit 3 is sent through the liquid pipe 4 to the top of the plunger 6, thereby raising the tip 7 at the end of the plunger 6. Reference numeral 8 denotes a guide device when the car 7 moves up and down along the guide rails 9. On the other hand, when the car 7 is lowered, the weight of the car 7 moves the cylinder 10 of the jack 5 into the tank IJ of the power unit 3.
canal, and along with this, Kato 7 descends. Next, the pattern thread of the power unit 3 mentioned above and its @11 will be described. Figure 1 (as shown here, power unit 3 is tank 1), base 12. city 11 (number 13.
Aburayawa Pump 14. (7) by the flow rate control valve 15, etc. When the car 7 is raised, the tank 1
Oil in 1 is removed by electric motor 13! The hydraulic pump 14 (thus discharges the discharged pressure oil) is moved into the cylinder 10 of the jack 5 (by sending the pressure oil to the plunger 6) while controlling the discharged pressure oil by the flow control valve 15. On the other hand, the descent of the car 7 is caused by the oil in the cylinder 10 of the car 7 returning to the position of the valve 1σ/2. 11. Contain the cost of oil using the flow control system 41 + 1 valve 15]・D - / L - To Kokichi, the running pattern is redundant (the car descends as it goes. This is the drive l/11hi for running the power Uniso i 3 Lt Kako 7, and is the heart of the I/Beta. The hydraulic circuit will be explained below. In Fig. 2, 5 is the jack, and 7 is the r-5.
1] is a tank, I3 is 71 cylinders, 14 is a hydraulic pump, 15 is a flow control valve, and the part inside the two-dot chain line is the flow control valve 1. This is a hydraulic circuit. First, let's talk about when c7 rises.2. . N11l I'
When the f-pump 14 starts, ±j'111i11
Under the action of the circuit 7G, the oil 1 discharged from the hydraulic pump J4 returns to the tank 11 through the hydraulic valve 17. Next up is the top row! till
111 of the first circuit 16 and open the loading valve 17, 42
This causes the discharge 11- of the hydraulic pump 14 to
The top is 6, ;; Danbu discharge LL is checked 7 < Lube (
When the hydraulic pressure of the jack 511j of the check valve 18 is exceeded, the check valve 18 opens, oil flows to the jack 5, and the cage 7 moves upward. When the car 7 reaches the predetermined position ζ 11, the lift valve 17 gradually opens due to the action of the lift control circuit 16, and the discharge IJJ 7111 of the hydraulic pump 14 is pumped into the full volume tank 11. Due to good fortune, car 7 is stopped. Next, ζ basket 7 descends one row ζ. When a descending command is given, the lower (landing solenoid VTRR and descending high-speed solenoid 20 are energized at the same time, the control side 21a of the descending valve 2), the descending acceleration adjustment valve 22a, and the descending stop adjustment throttle valve 22b are activated. Oil accelerates downward p
The oil EF: on the control side 121a of the F lowering valve 2 is lowered by passing through the +H adjustment throttle 9 valve 2.7 and the tank Ill is charred. From this point, the descending valve 25 opens due to the EE force acting on the surface of the descending piston 240 located on the jack 5 side, and the output from the jack 5 side flows to the tank Ill and descends by seven corners. The descending valve 25 includes a descending acceleration adjustment throttle valve 23,
ijl+, /! , (nT-tJ is the descending wave y'M i
J'! I 3% throttle valve 22a and lowering stop (hi, 11.
1) while the I-regulating throttle valve 221) exceeds the value j'tL'-,l:. Maximum descent of Kako 7,・I
! 1rt- is lower 1' (1 bin-ton 24'fjh
=:1jll i+p(slj,p J:'i";
, ]'l: I stopper 26 (thereby controlled. 1
Second, Kako 7 is traveling downward (this is predetermined f, lj
, i;,'7. , when it arrives, the descent +: % J・
t solenoid F2f7 is demagnetized and descending run from cylinder 10 of jack 5 21σ river 11,110,000 ili 1ll
Oil begins to flow to 121A, and this oil 11 [Thus, the lowering screw 1-72-1 is activated and the lower 17 [valve 25 is 1: ()]
At 41 mm, the control boat 27 of Fl, jC, and lubricant 2 opens, and oil begins to flow through the bottom landing solenoid VJ9. Then, the fL mother of this oil flows through the descending deceleration adjusting throttle valve 22a.
When it comes to 11 ml of pure water and tongue I-7, - Torebisu 1-7
21 (7) 1ill @ ka stop, it) ko'
7 (,il-accretion floor'・4ξj-axis i?X decelerates and descends. When the plane 7 reaches slightly in front of the floor surface, the descending χ1-floor plane J9 is demagnetized and the descending deceleration adjustment aperture The valve 22a and the throttle valve 22b for stop adjustment
The oil in the manifold controls the oil piston 21 (lit).
Now, the lower valve 1 and child valve 25 are closed redundantly, and the car 7 (stops).

[51 Pump Kanode]
is 10 (10I!!/min, tank capacity FtH
;i: i (Normally less than 100e. However, for large-sized j'ij7 objects) hydraulic elevator for automobiles (here ('i, strength I: and Since a large plunge η is required, the power unit of the dog'8t17, and the pump μI output ht2000 l/+
nin, tank capacity f series 2 (l OOl culm 1r [-) is the required piece. But like this 'J, large'
? : 'fN's power unit l-ha, (1) The outer dimensions are 5, and the weight is 200019 rod IJ'L:
,! :Enter machine room 2, press:I'1';4+
4 j・IcI J'jt. (2) After welding on the back of the tank 1 to be made Φ"i, we carried out at C. For surface treatment (flashing) on the surface of the tank foot 1P (for each large tank G, J: It becomes.
-4 Teiha 3 L (ko (i.
・Here, I turned the power unit 3 on to the first unit Nakagawa. , P, 3 If py bi yc, 4 Figure shows a power unit device with two power units, 111, 21" (1) Power unit l-,?a,
3 b is designed to move car 7 to flj row with 1ν of place 2, so that it is 100 j tl:'i i ko,・P mountain, and the upper row of car 7, tl; 'i each 7 < 1 Fuuni 71-3a,,? From b to IL pump 1
4. The flow rate of the oil discharged by 1.14 hours is controlled by a one-leaf valve (1.5; te minutes 8 pipes? Oi here 6
It's full 1, and I'm sure it's 9 to Jyatsuki 5. Masuta, 1.1 of F descent
The amount includes the oil in cylinder 10p, which flows through return pipe 4 and is separated by 1.
4?・1230 stagnation, tanks 11 a, l I
1p to l). However, in the Pahu unit '1% that uses the power unit l- of Okosakura e set, the tank 11a,
Hydraulic pump 14
1 amount at a flow rate of 1 u (control valve J 5a, 15 h j'
：、J-、FJ is used for each power unit L-3X]、、? (θ) Tank 11a, 1
The number of oil sent from l b and the return bone are the same as C7:
1 j: tl, ', (no, 1 tool problem)] diagonal. This is 18j'ij, ("l i to west e pipe system ("
This is due to the fact that i+'++ is unstable, and therefore, the material distribution system ζ with a large resistance is:
4TC's small piping system is filled with oil - only you will be less. And this, Uunazai 1: +yl+ of the elevator], TLp Okichi, each power unit, 'l
There was a difference in the amount of oil in the tank Ila and jib of a, 31), and the amount of oil in one tank was (so λ, finally overflowing from the top of the tank). l: J Konaru. There, in general (2shi, ar 3 [IYl 2t'< depth 4 c++ h, as indicated by 2, ar 3 [IYl 2t'< depth 4 c++ h, 2, ar 3, ? , i , 3 ): tank 112,1
ll) is connected to the pipe 31, i, ;+H is connected to prevent the mismatch. Fig. 5 (shows details of O predicate jτ3,
], 1 lb fttil iFa l this is the pipe R connection hole 32X! . ,? 2b is provided, and pipes 33a, , ?
a b is numbered (valley j),, this pipe, '33
A, 33h The tip f1 is where the flap/ji 35 is welded. Flanges i 6 and 36 are welded to both ends of the connecting pipe 3), and both ends of the connecting pipe 31 are connected to the pipe 33 a by removing the flanges 35 and 36 and attaching them to the τ1 hole 37. ,
33b. In addition, 38 is Patsukin. If the two tanks 11a, 111) are connected in this way, the two tanks 11a, 1lb
(7,) Connect the connecting vibrator 31 to the port S1 where the difference in oil level height has occurred. As a result, oil flows from the tank on the i'l11 side to the lower tank, thus preventing oil from overflowing from the top of the tank. [Background art period] However, as mentioned above, each power unit 1-3 a
, 3B tanks Ila and Ilb are connected by a linkage and an I vibe 3 no. Power unit 1-device (J has the following drawbacks. (1) Two tanks Ila and II are connected from the cylinder 10.
Since there is a large difference in the amount of oil returning to I), it is thick: +jj connection pipe 31 is safe and a large-scale construction is required. (2) Power unit 3 a, ,?h is I5
4017 As shown in 11)
Earth 7. H++s5 etc. (these two power units) 3 a. If a relative displacement occurs between 3b, the connecting pipe, ? 7 (
! : Connections with pipes 33a and 33b, tank Ila
, a large force is applied to the side of Ilb, causing a crack and causing front leakage. (3119112 Due to the space in room 2, the placement of the power unit, ``t a , 3 b'' is restricted'') In this case, it may not be possible to use a straight pipe through the connection pipe 3, and the piping will be complicated. There are cases. [Purpose of the Invention] The present invention is intended to solve the problems as described in 1.1. Oil + elevator power unit system that makes it possible to maintain the front height of each tank at a constant level by equalizing the flow rate of each tank without connecting the units. It is possible to provide the following. "41 Essentials of the Invention] This is true; Ij Monthly Edition, each group has a uniform node (7)? 1-11 pressure circuits each have 1 jii' pressure adjustment circuit. Current meter t1.!l rectifier circuit generates tank ζζ1 γ111θ) IJF ?f, :FA
By adjusting the oil level in the power unit O) tank, it is possible to average out the oil level (koshidama is also 0). [Embodiments of the Invention] Sai, below, one of the fruits of the present invention is: +, 4B; 1.1 Power unit device 1A using two units
jH (, 4-11). Box 6 shows the entire power unit device (A's part 71), and Fig. 7 shows two power units 3a. , ? One of the power units of Ll It shows 7 outputs and 11 circuits of 3a.In addition, this actual HILJ 61'
The power unit device consists of two par)-units 3a
. Tank IIFa, llb of 3b]+lf points Jli, U each C'7- Unit 7 3a, 31
)'s 1iir 4:'j fill (fill valve 15
a, 15b oil 11 twice 1 time each +'i' amount E
l'! Except for the fact that a rectifying circuit is provided, its +i, l(
Since the configuration is the same as that of the conventional power unit i'A Ij star described above, the explanation of the overlapping HjR component will be omitted by attaching the same number to the figure. In Fig. 7, 40 is the front TF, R one power unit, 1a's drift control valve 1 valve I5a oil 1'F circuit, and 4'2 t-J is connected to the shutoff 'shun i' regulation circuit. This Pido"jU" regulating circuit 40 is made up of a pair of check valves (non-return valves) 41 and 42 and an i3'J variable throttle valve 43, and is composed of a check valve 41 and a variable throttle valve 43. are arranged in series, and the check valve 42 is arranged so that the check valve 41 and the throttle valve 43 are 1. This hydraulic circuit is explained in detail. Then, at the time of toy yi4 of car 7, as before, oil 1]: Bomb I 4 iy (raises 1h1 when started) Due to the action of control circuit 1G, oil 11 and oil discharged from bomb 14 Pass valve 17 to tank Ila.Next, gradually close shoulder valve I7 at %l of rise control mark 11' trough I6. Increase the γ-sanno of the jack 511111 of the rising check valve 18 by +1.Ll
When iλ, the check valve 18 is tjij, fi',
fi %l adjustment rili] Y7-4 o IC? n1
KaMr. -1itai check valve 41.4
2 has a directionality with respect to ('i in 11 + 0),
-From 〒to 6-'' The hole through which oil can pass is 1111 5
(・A oil has a characteristic that cannot be used commercially.Using its II key characteristics, -force check valve 4
1 is set so that only the oil from the girder 5 passes through, and the check valve 42 on the side is set so that only the oil from the hydraulic pump 14 passes through. Therefore, the oil flowing through the check valve 18 is
Because it cannot pass through the knob 41 and flows through the (Ij) 42 to the jack 5, no)
The rise of 7 is f)Y! 71-9 circle adjustment circuit 4O (
Go no l:;;, don't give I♀, follow 31! = ``Nike 7J''F II+;; of the 3-mounted basket 7 is performed.In addition, each power unit l-, ?a, ,?b(
7) Since the control valves 15a and 15b have the same configuration (the power unit 31 on the I11 side), the flow L;
;11 control valve 15hl I will omit the explanation in case of trouble 1)
Do 13. FIG. 8 shows a part of the control circuit for the mud volume control valves 15a and 15h of the hydraulic circuit of each power unit 3a and 31), in which 44a and 45a are for lifting and landing, 44
b and 45b are relays and coils for high-speed ascent, 44c and 45c are for descent and landing, and 44cJ and 45d are for high-speed descent. Figures 9 and 10 show the operation of the relay and coil at the bottom of the car 7 at 1'/f (lower) and the flow back to the tank 11a. The amount of oil returned to tanks 71a and 11h is the same)
It shows a logical case where 1・, and 46a6Z[
Oil 1' is shown returning from cylinder 10 to tank Ila. From now on, the bottom 1'lh of basket 7 starts poetry relay 44.
When C and 44d are closed at the same time, the coils 45c,
45 d is energized, descending landing solenoid No. 9 and descending high speed solenoid? 0 opens at the same time, and the oil amount reaches a fixed amount. Furthermore, when the car 7 arrives at the predetermined position, II L/-44d is opened, 4sd is turned off, and the descending high-speed solenoid 20 is closed, and the oil t decreases linearly. The amount of oil is only for landing solenoid 19, and relay 4
Immediately after 4C opens, the oil amount becomes zero and car 7 stops. 46b is the amount of oil returned from the cylinder 10 to the tank 11b. The relay and coil operate in the same manner as described above. 46 CjJ, 4 (i The sum of a and 4ebl, that is, the total amount of oil that returns from the cylinder to the tanks 11a and 11b. Figure 10 shows the difference in the amount of oil that returns from the cylinder 10 to the two tanks 11a and 11b. There are various reasons for the difference in oil amount, but the biggest cause is the oil distribution W4 and the catch control box 15 ar 151
This is because more oil flows to the side with lower resistance due to the difference in 1II - resistance (total piping system resistance) of the first passage through ). 10th
In the figure, 47a is the amount of oil returned to the tank 112, 47b
711 is returned to tank Ilb, 47C is oil I11',
47a and 471), that is, the total amount of oil returned from the cylinder 10 to the tanks Ila and Ilh, and the dashed lines indicate the ideal amount of oil that would return to the respective tanks 71a and zzb. llT
1i1, that is, the oil amount is half of the total oil amount. In Figure 1O, the amount of oil in tank Ila is 4.
7a is less than the ideal oil j146a, tank 1
Return to 11) Oil soaking 471) is Jjlj imaginary oil amount 46b
more than In addition, assuming there is no leakage in the middle, the oil amount is 4.
The difference between 7a and 46at and the difference between oil-immersed 47b and 546b are equal. On the other hand, in Fig. 7, when corner 7 starts descending (jl relay (4C, 44d open simultaneously),
The coils 45C and 45d are energized, and the descending landing solenoid, id 19, and descending high speed solenoid/id 20 are opened at the same time, and the oil is turned off.
Oboro reaches quantitative Irl. This [Samurai] oil is supplied to tank 11 through IN through adjustment circuit 40.
a4 Go back. In this case, since the check valve 42 does not allow the flow of oil from the jack 5, the oil returns to the tank Ila through the variable throttle valve 43 and the check valve 41. Assuming that the piping system resistance is smaller than the total piping system resistance on the tank Ila side, more oil will return to the tank Ila side, but the total 1-゛ piping system resistance of the operator will be turned around. If this is done, the same φ value will return to the tanks 11a and Ilb, so open the variable throttle valve 43 of the flow adjustment circuit 40 and calculate the total piping system resistance. If you let it go, it's a 1-guess tank Ila. Both tanks 1 with the same total piping resistance of 11bI1111
1a, 111) can be made equal to [7]. However, the I 10 + j7 connection of the fence is the metal piping system of the tank 11b [because the resistance is small) ε saw unit 31) Illll flow is high IJ4 +: multi-circuit -ITI morning throttle valve Either close it and use JR as the resistance, or Barry Unit 3 a (Illll style JJ published
j', ji, % By opening the variable throttle valve 43 of the circuit 40 and not reducing the resistance, the tanks 11a, 11()
(The returning oil tl can be made the same; ii. Therefore, this power unit 1. < li z), conventional 21; sea urchin tank 1
1; I, 11 L+ are connected to each other due to lack of desire, and the t'j and 'tu of the tank 11a, 111) are also (ji'i t'f'ζ). , As a modified example, flow i, l: ii7.1 Festival circuit 4o flow meter control) rl 5 a, I 51) With the Yoshibunch confluence pipe 30: 11 (7,) l'iil', 'i at t4 The same effect can be obtained by installing the [Effects of the invention] In addition to the above, the present invention has the following advantages: (1) When using 49 Batuyu units; Each barfu'
-Knitted tank Okov-Average the decline of the town oil to 7tll of each tank'+Ii+Height 1 piece per foot L
It's coming. 4 [nu (face fl; 1 simple theory (jj14 fig. 1) is i1
1] Pressure elevator price P brown 1, Figure 2 is Q'< 11th EF of power unit, circuit diagram, g', 3
Figures 1 and 4 are a plan view and a front view of a conventional power unit device that uses two power units in one cycle.
, Fig. 5 (also an enlarged view of the tank connection part [Fig. iIO,
6th +゛g+~g+~Edict 1>〈l 4', 'l' One psi of the present invention indicates (ζf4-11, ・'496
The diagram shows iL-, 1rff l of the vanoenint device δ.
Tsukasa, Ki71″4 is the front circuit diagram of one power unit,
Figure 848 (・su1bll #!l1 circuit +21, Figures 9 and 10 l';<1 is below 1s'i!liζfi
It is 6'f soaked in oil in a tank. -3t> + 3 b... Barry unit, 5...
G V Tsuki, IIa, 111)...Tank, J4a,
J41]... Pump, 15 a, I 51)... Flow control valve, 30... Minute ai+, θ, 40... Part -
ff) g;,! J adjustment circuit, 41.42...-check valve, 43...13T variable aperture force. 1''Jro, 11 people F・1 person Rai [j1 person nail conversion 11.1zu Figure 1 Figure 2) 3 Figure 3 Figure 6 Figure 5 Figure 6

Claims (1)

[Claims] (A power unit on the order of 11+Na is used, and when the corner is ascending, the pressure oil from the pumps of each power unit is combined and sent to the lifting jack. In the power unit device that separates the oil from the jack and returns it to the tank of each power unit, the hydraulic circuit of each power unit is provided with a flow rate adjustment circuit that adjusts the flow rate of the oil that returns to the tank. Hydraulic elevator power unit. (2) The flow rate adjustment circuit consists of a pair of check valves (reverse market) arranged in parallel with opposite directions.
Sometimes, the oil from the pump is sent to the jack through one check valve, and when the car is lowered, the oil from the jack is returned to the tank through the other check valve and the variable throttle valve placed in series with this check valve. What is it? i Order of request for revision for relief (No.
The hydraulic elevator nozzle unit device described in item 1).