JP2620123B2 - Temporary lifting equipment for construction work - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a temporary lifting device for construction work such as an elevator or a lift, which can effectively use a material and a worker to lift and lower together.

[Conventional technology]

First, a description will be given of a conventional method of changing the elevation level in a temporary lifting device for construction work.

For high-speed, large-capacity elevators and lifts, a counterweight system is advantageous to reduce the drive capacity.In addition, a rack and pinion drive is required for the winch installation space, wire removal, and miniaturization of the top lotus. The scheme is advantageous.

By the way, in the climbing work for raising the elevation level as the construction progresses in the elevator with the counterweight, it is necessary to add a mast and change the top lotus. However, the following method is adopted in the conventional apparatus.

A method in which the mast is added and the top lot is refilled using a tower crane or a winch provided separately.

A method in which a mast lifting crane and a lifting drive are provided on the top lotus stand, and they can be operated by themselves without any other help. However, in some small rack type elevators, there is a type in which the mast is placed on the cage and moved up and down, and then added by itself.
In this case, there is no top lot and therefore no counterweight can be used.

[Problems to be solved by the invention]

However, among the above-mentioned conventional methods of changing the elevation level, in the case of the above, it is very effective when the tower crane or the like can be freely used, but the working time is limited due to the planned use of the tower crane or the like. In addition, the top must be kept open, and there are many problems particularly in re-training and roof waterproofing. In addition, in the case of, a dedicated device is provided for climbing work with a short use time, and it is usually kept in a rest state.In addition, in order to take up the reaction force of lifting and lowering, it is necessary to install a rack on the mast side etc. It requires ancillary processing and is very expensive.

An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a temporary lifting device for building work capable of easily changing the head.

[Means for Solving the Problems] For this purpose, the present invention relates to a temporary work for construction work in which a cage as a counterweight and a cage are connected to a wire via a sheave provided on a top lotus of a mast, and the cage is raised and lowered by a rack and pinion drive device. In the lifting device, an extra-winding winch provided on the counterweight and wound with a wire of the highest lift, means for temporarily supporting the counterweight at the base of the mast, and freeing the top lotus with respect to the mast. Means for raising and lowering the cage independently by a rack and pinion driving device to support the top lotus, and means for raising the cage and the top lotus while feeding out the wire and adding a mast. I do.

[Action]

Therefore, despite the counterweight type, the cage lifting and lowering is performed by a rack and pinion drive, and during assembly, disassembly and climbing, the allowable load for loading is limited to one mast's own weight and about 2 to 3 workers. The cage can be raised and lowered without weight, and the mast is added. At this time, there is no need to change the counterweight wire, just extend the extra winding wire to make it possible to change the wire, and the top lotus stand is also supported regardless of the addition of the mast .

〔Example〕

Hereinafter, an embodiment of a temporary lifting device for construction work of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment of a counterweight type rack elevator provided with a self-climbing function according to the present invention, wherein (a) is a front view, (b) is a side view, and (c) is an installation diagram of wires. ing.

The main components of the present invention include a cage 1, a driving device 2, a top lotus 3, a mast 5, a counterweight 6, each floor door 7, a ground enclosure 9, and the like. When the driving device 2 is operated, the cage 1 And a rack and pinion mechanism (not shown).

The counterweight 6 is divided into two and arranged on both sides of the mast 5. The wire 10 for hanging the counterweight is
Set one for each counter weight 6,
As shown in (c), one end is attached to the cage 1, it is turned back by the sheave 11 on the top lotus 3, and the other end is wound around the extra winch 12 provided on the counterweight 6, and the wire corresponding to the maximum lift is previously wound. Leave. During climbing, when the cage 1 rises from the upper limit position, the counter weight 6
Is temporarily supported at the base of the mast 5, and the wire tension becomes zero. Then, after the remounting of the top lotus 3 is completed, the extra winding wire is fed out so that the length can be adjusted to a predetermined length.

FIG. 2 shows an embodiment of the top lotus stand 3, (a) is a top view, (b) is a front view, and (c) is a side view.

The top lotus 3 is made of a beam material that can be moved up and down along the front surface of the mast 5, and sheaves 11 for counterweight wires are installed at both ends, and two kansashis for fixing the top lotus 3 to the mast 5 are provided. (Not shown) and a work scaffold 13. At the time of climbing, the cage 1 is raised and the top lotus 3 is supported by the cage roof, and when the kansashi is pulled out, the top lotus 3 becomes free with respect to the mast 5. Now fix it to the mast 5.

The top lotus stand 3 is driven up and down by a drive device 2 for raising and lowering the cage. At this time, since the ascent and descent are performed without the counterweight 6, normal loading is impossible. The tension of the wire 10 for suspending the counterweight is detected, and the automatic switching of the allowable load is performed. Do.

 The operation procedure will be described.

A mast for extension is placed on the roof of the cage 1 and the drive unit 2 raises the cage 1 to the upper limit position.

When the counterweight 6 is lowered and reaches the base of the mast 5, the upper limit switch is released, the cage 1 is raised again, and the cage 1 alone is raised to the top of the mast 5.

The mast 5 is lifted by the mast suspension device on the cage 1 and added to the existing mast.

Raise cage 1 further along the mast that was added,
Support the top lotus 3 with a mast.

The kansashi of the top lotus 3 is pulled out, the cage 1 is further raised, and the top lotus 3 is pushed up to a predetermined height.

The top lotus 3 is fixed to the mast 5 with the kansashi of the top lotus 3 attached.

Loosen the extra winch 12 of the counterweight 6 and unwind the wire 10 while lowering the cage 1 to a predetermined position.

Fix the wire 10 of the extra winch 12 and the cage 1
Is lowered.

 Set the upper limit switch.

At the time of disassembly, the mast is removed while descending the top lotus 3 in the reverse procedure.

Next, referring to FIG. 3, the cage 1 which is used both as a material and as an operator will be described. (A) is a front view, (b) is a plan view, (c)
Is a side view. This cage will meet the laws and regulations of both construction lifts and elevators, and will eventually be cleared by meeting elevator standards. The plane shape of the cage is adjusted to the dimensions of the material loading trolley by keeping the area constant with the conventional one, widening the frontage, and reducing the depth. In other words, the plan shape of the cage should be
mm, length 4000mm, 3000mm, 2000mm standard type, effective inner dimensions are 1300mm width and 4200mm length so that it can be applied.

The cage 1 is moved up and down along the mast 5 by the guide rollers 15. The door 16 has an electric motor so that the wide frontage can be fully opened and the door 16 can be opened and closed quickly and easily.
A rewind-type high-speed electric shutter 19 driven by 17 is provided. A shutter take-up shaft 19a is installed on the roof of the cage 1, and the electric motor 17 is used to minimize the overall height of the cage.
Were also placed side by side behind the take-up shaft 19a on the roof. Since the motor mounting side of the electric shutter 19 protrudes greatly, the carrier frame also protrudes, and a control panel or the like is disposed at this portion to make it possible to effectively use the outer dimensions of the carrier. Since the roof serves as a mast mounting place at the time of climbing, a space is secured in the center, and a manhole 22 for upper inspection and the like is arranged on the opposite side of the electric motor 17 for driving the shutter.

The tread plate 20 is elongated in accordance with the frontage, and is attached to the outside of the door 16. At both ends, as shown in FIG. 4, a link mechanism 23 is provided and opened and closed using a hydraulic cylinder 21.
Automatically in conjunction with the opening and closing of the vehicle, the tread plate 20 is moved down to the floor 25 to enable movement of the bogie.

Next, the automatic unloading device will be described with reference to FIG.
It is assumed that the luggage is put into a wheeled trolley 26, carried into the site, and loaded on the cage carrier 1a using a forklift. Unloading at a predetermined floor, which has conventionally required about four workers, is eliminated by an automatic unloading device.

Slide guides 27 installed at both ends of cage carrier 1a
On the top is an extrusion lever 29 that slides back and forth in the direction of the loading
The electric screw 30 is provided inside the slide guide 27, and the nut 31 is engaged with the electric screw 30. A slide base 32 is set on the slide guide 27, and a nut
The push lever 29 is fixed on the slide base 32 while being fixed to the slide base 32.

When the electric screw 30 is rotated, the nut 31 is rotated.
Moves back and forth, and the slide pedestal 32 and the pushing lever 29 move back and forth. The movement of the pushing lever 29 pushes the wheeled cart 26 onto the floor 25. At this time, the push-out lever 29 pushes out only to the front end of the loading platform, but thereafter, the bogie follows the inclination of the tread plate 20.
26 travels naturally and stops at the stopper 33 on the floor 25.
As a method of driving the push lever 29, any method other than the above-described electric screw method, such as a hydraulic or pneumatic cylinder method, an electric jack method, a chain driving method, and a rack and pinion method can be applied.

Therefore, the pushing lever 29 is horizontally moved to the loading surface by the push button operation of the operator, and the entire loading surface is paid out, regardless of the size and the loading position of the truck, it is possible to temporarily push out onto the floor 25, The door of the lift is opened at a predetermined floor, the treadle is turned down, and the pushing lever of the automatic unloading device is operated, whereby the wheeled cart on the carrier is pushed out onto the floor. These operations are performed promptly in conjunction with the push button operation of the operator, which is effective in saving the labor of the unloading worker and shortening the cycle time of the lifting work.
This device has a very simple mechanism, and does not require rigidity because the weight of the load is received by the wheels on the bogie side, so that the weight can be easily reduced.

〔The invention's effect〕

As described above, according to the present invention, by being able to climb the top lotus by itself, the climbing operation can be performed in a unique process without being influenced by the use schedule of the tower crane, etc., and the rooftop closing and waterproofing work can be quickly performed. The tower crane can be dismantled and returned early regardless of the lift use process, and safe operation can be performed by directly operating it.In addition, a dedicated climbing device is not required. The manufacturing cost can be reduced, the climbing operation is simple, and it can be performed in a short time by a small number of people.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a counterweight type rack elevator having a self-climbing function according to the present invention, wherein (a) is a front view, (b) is a side view, (c) is an installation diagram of wires, and The figure shows an embodiment of a top lotus, (a) is a top view, (b) is a front view, (c) is a side view, and FIG. 3 is an embodiment of a cage 1 which is both a material and a worker. (A) is a front view, (b) is a plan view, (c) is a side view, FIG. 4 is a cross-sectional view showing an opening and closing mechanism of a tread plate, and FIG. 5 is a view for explaining an automatic unloading device. (A) is a side view, (b) is a plan view, and (c) is a cross-sectional view taken along line AA of (b). 1 ... Cage, 2 ... Drive device, 3 ... Top lotus, 5 ...
... mast, 6 ... counter weight, 7 ... door on each floor,
9 ... Enclosure above ground, 10 ... Wire, 11 ... Sheave, 12 ...
Extra winch, 16 ... door, 19 ... electric shutter, 20 ...
Tread, 21 ... Hydraulic cylinder, 27 ... Slide guide, 29
…… Extrusion lever, 30 …… Electric screw.

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location B66B 17/20 B66B 9/18 CG (56) References Japanese Utility Model Showa 50-13367 (JP, U Japanese Patent Publication No. 377062 (JP, B1) Japanese Patent Publication No. 36-16767 (JP, B1) Japanese Patent Publication No. 56-14591 (JP, B2) Real Public Showa 41-12563 (JP, Y1) Japanese Public Showa 36- 27043 (JP, Y1)

Claims (1)

(57) [Claims] 1. A temporary lifting device for construction work in which a counterweight and a cage are connected to a wire via a sheave provided on a top lotus of a mast, and the cage is raised and lowered by a rack and pinion driving device. An extra-winding winch in which a wire of the highest lift is wound, means for temporarily supporting the counterweight at the base of the mast, means for freeing the top lotus relative to the mast, and a rack and pinion for the cage. A temporary lifting device for construction work, comprising: means for independently lifting and lowering a top lotus by a driving device; and means for raising a cage and a top lotus while feeding out a wire and adding a mast.