JPS6168972A - Falling preventing apparatus for extensible working platform - 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 This publication 13LI relates to a telescoping workbench used for pre-cutting work such as erection, repair and maintenance of buildings, etc. as shown in the first part, and in more detail, This invention relates to a device for restraining the legs of a workbench to prevent the wire rope from falling when it accidentally breaks.

This device th consists of a worktable that is freely extended by a number of legs Vc assembled into a pair so that they slide into each other, and a lantern is attached to the upper or lower end of the inner side of each leg. In addition, each leg of these wire loafs with a vertical opening was pulled or loosened by a powered model such as a winch, which was purchased all over the world, so that each leg could slide vertically. The above-mentioned work platform is equipped with a device that will secure the legs and prevent the highest leg attached to the platform from falling if the wire rope of the work platform, which is in a stretched state on the straw construction deck, breaks due to an accident. It is being

Traditionally, this independent outfitter was 1'f lol Kosho 52-827.
As shown in the 2-riki publication, the locking member is engaged with the temporary locking part provided on the inside of the upper part of the leg, and the nail is secured.
The claws are designed to prevent the legs from moving.
When the pulley, lever, and par are pulled downward by the wire, they are in an uncoupled state, but when the traction force to the pulley is lost due to the wire being cut, the spring forces the engaged part to disengage. The tensile force of the spring in this 4E device must be less than the downward force of the pulley on the rope, and large enough to cause the pulley, lever, and pawl to work together with the pulley when the rope is cut. No. In fact, even with the efforts of the Ministry of the Invention, this spring adjustment can only be carried out within a limited range. In other words, in consideration of the long period of non-use, which is the fate of this Danjokubi, the 9th Pa
) If you select 8 and apply it, the claw may become 1 due to slack in the rope or vibration of the leg during operation, causing the control to work.

On the other hand, if a uniform spring is used to prevent such a single action, the claws will not be able to engage the locking action against the rapid friction resistance between the members in an emergency.

The present invention solves the above-mentioned drawbacks of the prior art by obtaining the force for removing the metal holder and the force for applying the force to the binding and locking member such as a wedge from separate load flat membranes. The purpose of this invention is to provide a fall prevention accessory for making sweets.

Needless to say, the present invention can be applied to the glaze-like aspiration ζ nilevator with 6 lower walls and a tangent of Y1.

In this invention 11, for example, the upper and lower parts of two pieces of pure gold rope are pulled toward each other by a wire rope 1 wound around a winch, and the bow of the lower piece of gold rope is 100% in the opposite direction to the 1st direction. The beak J at the top and bottom of the fc that operates in the direction
A first loading means, for example a coiled spring or the like, which is functionally attached, such as a coiled spring or the like, is inserted into each other; Pause width material,
In this phrase, the second negative means, such as a coil spring or In order to maintain the operating position of the locking member by some means, the latching member and the transmission latching means, and the operating force by the first load hand via the one pulley, are applied to the locking member. Kake is transferred to gold + tori, and the plate is gold +
A means of transmitting the cutting blade to remove it from the stage? It is a road prevention device that is commonly used for Hishinori Miya's confectionery stand.

According to one example of the locking member for the leg fixing I according to the second aspect of the present invention, there is a fixing member fixedly layered on the outer surface of the inner closing body so as to engage with the fixing member. Composed of movable wedges.

First, if the configuration of the present invention is explained in detail with respect to the specific example shown in FIGS.
An upper pulley 2 and a lower pulley 3 are attached to the lower and upper ends of the steep parts of the legs 1a and lb, which move vertically into the nesting holes.
The wire lobes 14 are connected to these sentinels.
+ i I 7L at u=I, the 4 double-edged groove wheel that pulls the inner end of the lobe pa.l with the winch 19 #dI and the leg gear 11
The valve is set to L, which stops the valve. 2g1 that can move up and down in 1b slip t3 and was set in the one frame of Fi4J salary 1a
Loading means g, 1 spring? It is biased downward from VC. An L-shaped lever 4, which is made up of two actuating force transmitting means, is attached to the rotation mark on the third stone l''lc of the lower pulley on the inner side P#1, and the inner end of this lever is the lower beak. 13, and at their outer ends there are rods 5. These rods are pivoted with pawls 6 which are connected by latch means. These pawls 6i
"!ml" is pivotally attached to the inner end of a member 21 horizontally attached to the frame.

In addition, the upper pulley 2 is made vertically movable, and in contrast to the second example, a first spring and an L-shaped lever are provided on the upper frame 22 of the outer frame body, and the upper pulley 2 is moved upward. You can also take notes from the sea urchin.

Speaking of the construction of the locking member, the three side frames 16 of the leg 1a are each provided with a fixed hook 13 with the pointed end pointing downward. Two horizontal pars 10 are movably attached to these side frames 16 through 17 sub-pieces, and a rod 11 is pivotally attached to the outer end of the horizontal pars 10 by means of an extending member. ing. 2. ■Replace the instep member and the first rondo VC and rope 6 will also be hit in two phases.

A diagonal tip 12 is attached to the lower end of this rotor F'll with the pointed end facing downward. This is roughly equal to the slope of Kudebi and Kanikudehi, and it is tako ('i30'→; After I: Nate 凼. 22 Par 100 - Tonton 2ζ Koreshita Ron to 9 is pivotally mounted on the rod 9. A protrusion 18 is provided on the long side of the rod 9 by means of a temporary hook: τ metal means. In order to achieve this, the second chinese 8 is installed at the lower end of the 7th.

A claw 6 is provided in the projection 18.

$ 5 a~m 5 Cm I": X" Gate i
A preferred example of a wedge mechanism with 1JH 9z positive %p is shown.

That is, the fixed wedge 13 is surrounded by a guide grating 25, 25 and a mechanical plate 24, and is fixed within these plates, and the movable wedge 12 is surrounded by a guide grating 25, 25 and a mechanical plate 24, and the movable wedge 12 is surrounded by a guide grating 25, 25 and a mechanical plate 24. Ikabatake C is here.

23. At 23..., the movable wedge 12 and the fixed wedge 13 face each other/) Quickly movable Kusapi 12 complete works 5J all the protocol 〈≧and 13 with red match j7〈. There's no way this Nilocar will work properly.

Dad, cuttable wedge 12, guide plate 25°, 25 yen?
Therefore, it is engaged with the fixed wedge 13 through the roller 23 at the v15!I: without deviation during operation.

Figure 6 shows the buttocks of another uninvented A-body example. As shown, the skin 19 load + stage and vz, 1 t weight 926 and the second heel 27 are respectively U-shaped as the second load stage.

The roles of these summer springs 26 and 27 are the first spring 7, the second spring 2, and +rs+- in the second yakunoshusu 5 figure.

2F, JA family's working money side by invention is revealed in Figure 7. First of all, the wire rope 14 is functioning in the royal palace.
Since upward traction is always acting on the lower slide M-3, the L-shaped lever 4 on the right side in the figure tries to rotate in the time-fit direction, and the L-shaped lever on the left side tries to rotate counterclockwise, and the spring 7 It is receiving a traction force that exceeds the force of .

As a result, both the left and right claws 6 are moved by the rod 5 to the protrusion 18.
Since the rod 9 is pressed and engaged, the descending chain m of the rod 9
is definitely being prevented.

When the wire rope is cut, the lower part is pulled to T1 by the extension force of the 3n spring 7. In this way, each lever 4 rotates counterclockwise and clockwise, respectively, and the protrusion 18 is formed on the pawl 6.
deviate from As a result, the bow 1 is lowered by the spring 8, swings against the bar 10, and the movable wedge 12 is pulled up together with the bow rxx. This wedge 12 is finally lli! It is the slope of the leg 13 and the lj+l of the leg 1b.
The legs 1a and 1b are fixed together through wedges 12 and 13 which are frictionally secured to each other.

If we describe the operation of the device of the present invention from the perspective of spring mechanics, we can say that the force of the first spring 7, the force of Atsuko that is constantly applied to the lobe, and the most powerful force when Rimari Sakuka is not riding. The force necessary to keep the legs in control, that is, the rope's gravitational force L! ll is also small, and the claw 6 is pierced j51!18
It is sufficient that the force is greater than the force that favors breaking away from the agreement. The force of the second spring 8 must be sufficient to ensure that the movable wedge 12 secures the leg.

The force relationship between the first spring and the second spring can also be determined by appropriately designing the length of each row of L-shaped levers 4 that act as levers.

As the first spring 7, in the illustrated embodiment 2, an extension coil spring installed on the outside of the leg body is adopted, but a tension compression coil spring installed between the leg body and the trencher is used. It's okay. - ] 9, the second spring 8 can be either an extension coil spring or a 1σ compression type coil spring. These springs may be suitable resilient devices such as leaf springs, springs, elastomers, etc.

According to the present invention, in an emergency such as when cutting a rope, the beak I!
Because the means used to operate the lashing device and the load means used to activate the lashing member such as a wedge are different,
Since each type of load means can be optimized for the neck, stable use of the 1st round support and reliable safety in the event of an emergency. It depends on what you get.

According to the present invention, the outside 91 of the cage to which the rlj claw is attached has two wire ropes suspended from the telescopic table.
The respective wedge members provided on the eleven leg bodies and the inner leg body are instantaneously engaged with each other as these pulleys are released, and the two wedge bodies are instantaneously integrated. Moreover, since the entire wound of the sliding X tomashing device is accommodated within the range of the leg body, and there are no parts that are lost outside the leg body, inside the body of the outside 'p and IPn corresponding to each inner surrounding body. 5. Immerse it in the ml hole and store it. As a result, it is not only possible to lower the rising corner of the cutting base compared to the height of each piece, but also to make it possible to lower the secured members of the lower grade 4kjJ, as in the Kenmai Sousou disclosed in the above-mentioned publication. Compared to the case where the claws are brought together by point contact, the downward direction of the fixed wedge is the same as the direction of the fixation of the moving Sahito, so the early tonic effect of the dark is accelerated, and the effect is that of the leg body. My own weight makes me crazy about stocks.

In addition, the opening i of the opening i of the opening 1-1; the three sides are maintained equally and properly by the opening id 15, so the wedge) is ^
−Rubbing force = ψ et al. evenly on the right side? L,
Any inconvenience caused by misalignment will be dealt with. In addition, since the mutual surface contact is used and the pushing force in the direction of the I angle force is applied to the slope of the wedge, the above-mentioned frictional retaining effect becomes strong.

4. A perspective view showing all 9F- of the extension work base in which the downgrade prevention hole of the present invention is installed in the r+6 car MR light @1 section of the drawing.Secondly, the uninvented Concave drawing showing a specific example of fall prevention clothing, No. 3a, No. 3b
The figures show the part of the road prevention device, and Fig. 3a is a front view of the part, section 3b (section 3b is a rear plan view), and Fig. 4 is a section A-A of the main part of Fig. 2. Ward, @ 5 A51 The thin gc drawing shows the resting member. It is a detailed view of the government mechanism, the 52nd side shows the four sides, the 5th b side shows the bottom view, and the B- of Fig. 5a is shown in Fig. 5C.
A sectional view taken along the line B, No. 6- is a three-concave Utabe diagram of another specific example of the X invention device W, and No. 7J is an explanatory diagram of the operation of the great invention fall prevention device.

la, lb...leg body, 2...upper groove, 3...lower pulley, 4...L-shaped lever, 6...claw, 10...horizontal bar, 12...movable ζbi, 13...Fixed wedge, 19...Winch, 20...Platform.

Fig. 5c Fig. 5b Fig. 25 Z-ri No. 6
figure

Claims (7)

[Claims] (1) a first load means attached to one of the pulleys of a pair of pulleys pulled toward each other by the rope in a direction opposite to the pulling direction of the rope;
a locking member for mutually securing the inner and outer legs that slide telescopically relative to each other; a second load means mounted in conjunction with the locking member to actuate the locking member; 2. A latching means and a latching means installed to hold the locking member in a non-operating position by means of a loading means, and transmitting the operating force by the first loading means to the latching means via the one pulley. A fall prevention device for a telescoping workbench, including an actuation force transmission means for releasing the workbench from the latching means. (2) The pair of pulleys are disposed vertically within each of the inner and outer leg bodies, and the first load means operates the lower pulley downward. Fall prevention device for telescopic workbench. (3) The pair of pulleys are arranged vertically within each of the inner and outer leg bodies, and the first load means operates the upper pulley upward. Fall prevention device for telescopic workbench. (4) The locking member includes a swinging horizontal bar passing through the side frame of the inner leg and a rod hanging down from the inner end of the horizontal bar, and the rod includes the latch means and the second load. Claims 1 to 2 are characterized in that means are provided.
The fall prevention device for a telescoping workbench according to any of Item 3. (5) The operating force transmission means is a pair of L-shaped lever mechanisms installed in the leg body, the inner end of which is pivotally connected to a pulley actuated by the first load means, and the outer end of which is connected to the latch means. A fall prevention device for a telescopic workbench according to any one of claims 1 to 4, characterized in that a claw is attached thereto. (6) The latching means is a protrusion provided on the upper part of the hanging rod, and the second load means is a coil spring or weight attached to the lower part of the hanging rod and urging the hanging rod downward. A fall prevention device for a telescopic workbench according to any one of claims 1 to 5. (7) A movable wedge is attached to the outer end of the horizontal bar with the tip pointing upward via an extension member, and a fixed wedge is fixed to the outer surface of the side frame of the inner leg with the tip pointing downward, and is movable when activated. A telescopic workbench according to any one of claims 1 to 6, characterized in that the wedge engages with the fixed wedge and the side frame of the outer leg to secure the inner leg and the outer leg. Fall protection device.