JPS59146729A - Gravity drop preventing device - Google Patents

Abstract

PURPOSE:To permit to stop a slider without shock at any position even when the air pressure of a balance air cylinder is dropped by a method wherein a cylinder, operated when the pressure has become lower than a predetermined air pressure to operate a stopper, is provided in the device. CONSTITUTION:A DC servomotor 1 pivots a ball screw 3 through a timing belt 2 to ascend or descend the slider 4. An air regulator 5 regulates the air pressure supplied to the balance cylinder 6. A ratchet wheel 8 is provided at the shaft end of the screw 3 with a recess 8a while the recess 8a engages with the stopper 9. The stopper 9 is connected to the air cyliner 11 and a rod 11a is retracted at a pressure lower than a predetermined pressure. When the pressure of supplying air is reduced, the rod of the air cyliner 11 retreats by the resilient force of a spring 11b, a pawl 9 abuts against the ratchet wheel 8 due to the retreating of the rod and engages with the recess 8a while the driving of the motor 1 is stopped by a microswitch 12 at the same time.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention relates to a device for preventing the fall of a Z-dapple due to its own weight, which positions a slider arbitrarily in the direction of vertical force by rotating a ball screw using a DC nervo motor or the like. 3. Conventional structure and its problems Traditionally, the above-mentioned Z tape) L has a structure that balances the gravity of heavy objects mounted on the slider and allows for easy movement in the direction of vertical force. 9/Kome balance/If the air IJ is lowered by 1 level due to the installation of a cylinder or for various reasons,
Suddenly, the output of the roller/slider/linda will decrease and the slider will fall 5. In order to prevent this fall, slider ( ) 7: latch, IL G ~ is provided, and this slider , air, l-E engaged with a single-acting cylinder that operates when the force exceeds a set value.

However, with the above configuration, the engagement between the hook and the cylinder can only be made at a certain 8jψ/1 point, and the lower limit may be exceeded and the cylinder may fall. It's 2. Furthermore, even if they are engaged, the weight of the slider and the loaded object will be applied to the hook fittings and the single-acting cylinder, resulting in a large impact.

As another method, it is possible to install a non-excited electromagnetic rake on the 116th axis of the DCC thermomotor and activate it more by checking the decrease in air L1 force.If you want to freely adjust it, Take this brake part &, -1,・1
It's very inconvenient.

Invention (7) jl-like (<invention yt, Eliminate the drawbacks listed in I [2, Balance air, - Sunni'rii - Iha-tech-)' Pressure reduction / 3
- If the slider---Utama 21 to a) effect #i
Stop without shooting [21, Kate], when adjusting, when adjusting, two trees (Uru 2 Chi Geno ['s own weight/custom de I (direction I to device 1G')' h clan 1) .

The configuration of the threat IJ, l is i′r, light (・, J, Ho At,), and L: VC.
Installation rj rat'L fr-'j l 411f-'D
to? 'no・: l ill'f (, - engagement L・1 function:
f stopper and the specified air i:E,,I'.
ni, l i'f m L,, convex IJ1. I made my own stopper.
teyo,・su,・kuu/su,,'f, -7 cylinder f
If the JIl for ``fl'' is low FL*-, the effect of ``1.!l'' is that even the I 1. Refer to Figure ia1 for an embodiment of the present invention:
Explanation from J-ru. , 1i:11) Rotate Bono v) and Vji 3 via C11-bomotor T- and timing belt 2, and lower slider 4'<lr. 6 ri Nit-Aregi, Reta Te, Bara 2 Nosun;) 1 gift to Nda 6: L A-1
Adjust the F force to X. , connected lff anti-7 (・) is set to 1 and 1 to the earth slider 4, i) Q; 8.; Keball [: Provided on the axes y, li, and I of 3 C-)
It has a recessed part 8d and a recessed part 8d':'-'
09 V: isu) Buckwheat'-' ” Rotates around the C1 fulcrum 10, and connects the four parts 8d of the cited type and the one-thread mortar-4-ru1.
, 11 (lj-■-rein-ring-) is connected to the front, -, 11 stopper 94, and a predetermined pressure ('1 +-Co
, / g11 aka pull-1 kom1. 12 is MicroSynof''-(', previous, i[; strike 1.
Detection of bar 9) I'14I+, .

1) A device configured as above for protection against small falls. ), and the following 15) Explain the operation +i+f, 7. High pressure supply F'-i'G,) j? ""? ,
``''''I +aj IV) ': に: Reculator 5 and the prescribed 11τ force... Toshi 1, Haro, / Sunrin 9~6-\1 to the sharp red Jiro-Jl) 1, 2 On the tag J-(, Sura fro'-4 mounting replacement type in: (-I
, Hasens 7/Rin 6 Do T-・Kushi/Suka j1+
DC Ya-pota 1-((1~easy('(21", sound, 1) move to the device, stop" 2 4. ζ2 can be -1-force, -L- 7. Y-ring -11 also rises, + supply air is supplied, f),' no h11 al
, MfJ 5m L/? '+kW, and the claw 9 is also in the A- state as it becomes more il:l than 8 during hooking.

This 7" (? 5), ball [, 3 to 1 claw 9 (・) is more restrained, 1 (・) 1. Next, turn off the supply air or converter's power supply and disconnect the piping. The reason for the snow (! If you dry it at a lower temperature than
Mouth of air cylinder 11:,, l-'H, Hane 11b Nozu 1 death), Dimensions to 1, retreating 1, Kofl Nyohiro 1 generation 9
is in contact with quotation type 8, and at the same time 1, which fits part 8a or 4, microphone (II Suinoji 12 (ends on 7), D
C thousand-ter one! Center l1iII stop F sa (1-ru.

Next, as the tit supply air pressure further decreases L2, the output of the Haranson cylinder 6 becomes low, and the slider 4 is unable to support the slider 4 and the loaded object, and the slider 4 is attached to the wheel screw 3. 111 while lowering 7 customers), but since the hook Φ8 is fixed by the claw 9, this state is maintained.

As described above, the main bar (in one example, provided on the hole L2), the F-pull 11 tonne, the strut that can be engaged with this hook, the nozzle, and the air pressure below a predetermined air pressure. By providing a detection switch J, which operates when the stopper, - is activated (SEL/RINDER and the /S/TAR), the detection switch J is provided. y-゛゛ru's own drop 1. can be prevented by any number 4, - and h, !till 1
(Send the signal 1'J-\air low l.-(/(2) to stop the DC servo from driving 11 at -1 to prevent the motor from overheating.

In addition, in this embodiment, it is possible to use 1 piece, 7 pieces, 2 pieces, a dovetail chisel shape, and 2 pieces. , Effects of the Invention As described above, the present invention has a ball net]- set ζ, li'-
3 o 1/, -, the hook wheel and (the second hook l what/this engagement il
``11 Shina Strike)
When the force becomes 1.-, the balance air/su/da will be activated. The air pressure horn is lowered by 1 m, and the slider is lowered by 1 m - R2 is also used.
4J Z/2 has the effect of stopping quickly.

[Brief explanation of the drawing]

1 is a perspective view of a locking device, and FIG.
, 2 % 31 No. 21 is the side of Fig. 2 [Fig. ″) Egg - In the circuit diagram (
9ru 1, 1...DC-Lee---Homo-7th evening, 3-・
・Ball net, 4 sura・f2 goo, 5...work'
Areculator, 6...Balance shift, 5...
・Coarshi・If, rate, 6 Hansun Linder, 8...catch t4j, g -su 1・)ノ〈
11 ...-[Complete / Linder-,
. Names of delegates: Isoku=f Toshio Nakaure and 1 other person Figure 1 I (Figure 2 f), Figure 3 Hardware Ichi 2, Figure 4 '!(), If, -1' 1 8 ■1 ・, (3

Claims (1)

[Claims] By rotating a ball screw with a DC motor, etc., the slider is positioned at any position in the vertical direction, and the balance that supports the weight of this slider - I'unlinder, r+iJ N' self-ball screw' 2, a hook Φ, a stopper that can be engaged with the hook type, a cylinder that operates to operate the stopper when a constant air pressure is reached, and a cylinder that operates by the operation of this cylinder. Self-weight fall prevention l consisting of a detection switch
equipment.