JPS63110365A - Method and apparatus for rising and falling of lift stand - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for raising and lowering a lotus platform (also referred to as a union) of a lift and a device used for the same. This invention relates to a method and device for raising and lowering a lotus stand in a self-elevating manner.

[Conventional technology]

2. Description of the Related Art There is a known lift in which a hoistway is provided in a part of a building, a lotus platform is installed at the top of the hoistway, and an elevating frame having a cargo platform is raised and lowered along a pair of guide rails provided in the hoistway. An example of this will be explained with reference to Fig. 4. 1 in the figure is a steel frame structure of a building, and a hoistway 2 is formed in a part of the frame formed by the columns and beams, and the hoistway 2 is formed in the opposite beam. A pair of guide rails 3 are vertically installed by supporting members 31. An elevating frame 4 is provided along this guide rail. The elevating frame 4 has a gate-shaped frame 42 erected from both ends of a horizontal loading platform 41, and is movable up and down while being guided by the guide rail 3 by upper and lower rollers 43.

Next, a lotus stand 5 is supported at the top of the frame body 1 by a pair of outriggers 52 provided at both ends of a structural beam 51. The outrigger 52 has its upper base end pivoted to the end of the beam 51, and can be raised and lowered freely between a position where it extends horizontally within a vertical plane and a position where it is vertically flipped up and shortened, and is in an extended position. In the figure, the lotus stand 5 is shown to be fixed at the lower end, and in the shortened position, the lotus stand 5 can be raised and lowered by guide rollers 53 (FIG. 2).

Reference numeral 6 denotes a counterweight whose weight is set according to the lifting frame 4 and its carrying load, and a second sheave 54;
A plurality of sheaves 44 provided on the upper beam of the lifting frame 4
A hook is rotated between the lever and the plurality of sheeps 61 of the counterweight 6, and the lifting frame 4 is moved up and down via a drive motor (not shown). Such a lift may be of a type that does not employ the counterweight 6.

When such a lift is used for construction work to perform lifting work, it is necessary to gradually extend the lifting height as the construction progresses.
must be moved.

This movement can be done by (1) using a tower crane, (
2) A method of installing a temporary beam above the lotus platform and using a chain block or winch and pulley; (3) A method of attaching the drive machine installed on the lotus platform to a lifting rail installed separately in the hoistway. (4) A method in which a pair of masts forms an independent hoistway and a winch is used to raise and lower the lotus platform along the mast.

[Problem that the invention seeks to solve]

In the conventional moving method for moving the lotus stand, (1
) method requires the use of a tower crane that is installed separately for construction purposes, so it is constrained by the relationship between the work range and the lift installation location, and requires adjustments to the operating process. Because it is necessary to secure space above the hoistway for the operation of the crane, it is necessary to maintain an opening in the roof and provide rain protection, and the roof remains to be completed, prolonging the waterproofing work. Additionally, there is an additional cost to keep the crane in place until the entire lift is dismantled and removed. Method (2) requires temporary beams, and removing them requires time and effort.

In addition, it is limited by the capacity of the lifting machine and it is necessary to disassemble the lotus stand, which takes time and effort, so it can only be used when dismantling it.Moreover, it is necessary to avoid the machine frame of the lotus stand and move it laterally. must be lowered from. In method (4), the advantage of using a built-in frame is lost, a pair of masts that can stand on their own are required, and the lotus stand must be lightweight. Method (3) is to install a drive motor on the lotus stand,
Although it is characterized by obtaining self-lifting force, it is necessary to install a lifting rail over the entire lifting height in the hoistway, and this rail must also be extended or reduced. In addition, a rack and pinion are used to engage the lifting rail and the drive machine, but it is necessary to ensure precision in their engagement, which detracts from the advantage of using an electric motor for horizontal operation.

Furthermore, in the cases of (1) and (3), the weight of the lotus stand becomes a hindrance, and in the case of +1), the movement range of the crane is restricted and the flow line centered around the lift is affected, which is a disadvantage.
In the case of (3), the lotus stand is raised together with the counterweight or the lifting frame due to the traction method, in which the entire lift is wired, and the drive motor is required to have a large capacity.

[Means for solving problems]

The present invention has been developed specifically for the purpose of eliminating the drawbacks of the current state of the prior art as described above. That is, an invention has been completed in which a lift for middle and high-rise buildings having a normal configuration is equipped with a device for raising and lowering the lotus platform, and the device is operated to raise and lower the lotus platform in an inchworm-like manner. In the present invention, a normal lift is equipped with a lifting device of a new configuration, and this device is installed between an outrigger that supports the lifting frame on the frame, and the lifting frame and the lotus stand, and is installed on the lift for one floor. A second invention includes a climbing mast having a rack gear having a length of at least the above length, a drive frame provided on the lotus stand, and an electric motor provided on the lotus stand and having a pinion that meshes with the rack gear,
A feature of this device is that the lotus stand and the lifting frame are alternately supported by the frame and are lifted and lowered individually while taking reaction forces from each other.

Therefore, the present invention is similar to the above example (3) in that the lotus stand is moved on the mast via the rack and pinion by the drive motor provided on the lotus stand, but in this invention is provided between the lotus platform and the lifting frame with a length of more than one floor, and the operation of the drive motor also acts to raise and lower the lifting frame and the climbing mast with respect to the lotus platform. This is completely new in that the outriggers move up and down sequentially on the frame.

〔Example〕

Before explaining the elevating method of the present invention, an embodiment of the elevating device of the second invention will be described in detail based on FIGS. 1 to 3. Note that the reference numerals given in the explanation of FIG. 4 are also applied to the configuration of the present invention.

FIG. 1 is a front elevational view of the same conventional lift as shown in FIG. 4, but with a lifting device IO installed according to the invention. Figure 2 is a side elevational view of the lift of Figure 1;
FIG. 3 is a plan view mainly showing the lotus stand 5. FIG.

The lifting device 10 includes an outrigger 1) of the lifting frame 4, a climbing mast 12, a rack gear 13, a drive frame 14, and an electric motor 15. To explain this elevating device 10 in more detail, first, a pair of bases 16 are assembled on both ends of the upper part of the portal frame 42 in the elevating frame 4, as shown in FIG. An outrigger 1) is installed and configured to be freely raised and fixed like the outrigger 52 of the lotus stand 5.

A bracket 17 is provided in the middle of the base 16, and the lower end of the climbing mast 12 is pivoted to this bracket 17 in a detachable manner. This mast 12 is aligned with the center position of the end face width of the lotus stand 5, and supports the mast 12 vertically facing the end of the lotus stand 5.

For example, the climbing mast 12 is 150 x 150
X10x7 H-shaped steel is used, and its length is 1 of frame 1.
The building will have a height equal to or higher than that of a story, and be constructed so that it can be divided as appropriate. The flange of this mast 12 faces the length direction of the lotus stand 5,
A rack gear 13 is attached inside thereof parallel to the mast 12.

Next, a pair of drive frames 14 are installed at both ends of the lotus stand 5. The drive frame 14 is equipped with 2' sets of upper and lower guide rollers 18 that contact both sides of the H-shaped steel web of the climbing mast 12 and the inner surface of the flange, and is also equipped with an electric motor 15. This electric motor 15 is a geared motor, and has a pinion 19 via a speed reducer, and engages and disengages the pinion 19 with the rack gear 13.

It is preferable to provide a control device 20 for the lifting device 10 on the lotus stand 5, and also provide a known overwinding drum 71 and a governor-type automatic fall prevention device 55.

(Function) The elevating method of the present invention and the effect of the elevating device will be explained in detail based on the process of elevating the lotus platform 5.

When the hoistway 2 formed by the steel frame structure 1 is constructed and the lift is placed, the lotus platform 5 is fixed by an outrigger 52 at the upper part of the hoistway 2, and the loading platform 41 is lifted and lowered by the guide rail 3. be driven.

As the construction work progresses and the lifting height of the loading platform 41 becomes insufficient,
The lotus stand 5, which serves as the base for lifting and lowering, is moved upward. For this purpose, a lifting device 10 is provided in addition to the basic structure of the lift described above.

First, assemble the base 16 on the top surface of the end of the lifting frame 4,
Attach the pair of outriggers 1) and the bracket 17. Next, the lower end of the climbing mast 12 is pivoted to the bracket 17, the mast 12 is vertically erected, and the rack gear 13 is attached in parallel thereto.

On the other hand, a drive frame 14 is attached to both end faces of the lotus stand 5 so as to face the mast 12, and an electric motor 15 having a pinion 19 is attached thereto.

Next, when the hoisting frame 4 is hoisted to the top of the hoistway 2 at that time using the normal operating method, the climbing mast 12 and the rack gear 13 attached thereto also rise and are located in the middle of the drive frame 14. , a pair of upper and lower guide rollers 18 are attached to the drive frame 14 to support the upper part of the mast, and at the same time, the pinion 19 is connected to the rack gear 13.
to complete the lifting device 10. Of course, this assembly can be done upside down and the climbing mast 12
The lower end of the mast 12 may be pivoted to the bracket 17 by lifting the elevating frame 4. During this time, the guide rail 3 is also extended above the frame body l. The climbing mast may be divided into parts and connected in sequence.

At this point, the lotus platform 5 starts to rise. The process is as follows.

1. Lay down the outrigger 1) of the lifting frame 4 horizontally,
It is supported and fixed by the frame l.

2. Raise the outrigger 52 of the lotus stand 5.

3. Drive the electric motor 15 to raise the lotus platform 5 along the climbing mast 12 in a balanced manner through the rotation of the pinion 19.

4. Attach the outrigger of the lotus stand 5 at the position of the beam above the frame body 1.
52 horizontally and fix the lotus stand 5.

5. Raise the outriggers 1) of the elevating frame 4 and separate them from the beams of the frame 1, and drive the electric motor 15 in reverse.

The relative movement of the rack and pinion moves the rank gear 13 upward, and the elevating frame 4 rises.

6. When the climbing mast 12 is prepared for a long time, steps 1 to 5 are repeated, and the hoisting wire 7 is paid out as necessary.

7. The final step is to return to step 1 and untie the climbing mast 12 between the lotus platform 5 and the lifting frame 4. Normally, after the lower end and the bracket 17 are uncoupled and cut off, the outrigger 1) is shortened and the elevating frame 4 returns to normal operation.

The lotus stand 5 is lowered mainly when the lift is disassembled, and generally the above-described raising method may be reversed.

(2) Raise the elevating frame 4.

2. Connect the lifting frame 4 to the outriggers 1) and 52 of the lotus stand 5.
and the climbing mass) 12 and the drive frame 14 are engaged to complete the elevating device 10.

3. Shorten the outrigger 1), rotate the electric motor 15 in the normal direction, and lower the elevating frame 4.

4. Fix the outrigger 1) to the beam below.

5. Shorten the outrigger 52 of the lotus stand 5, reverse the driving machine 15, and lower the lotus stand 5.

6. Extend the outrigger 52 and fix it to the beam below.

7. Repeat steps 3-6.

8. After fixing both the lotus stand 5 and the elevating frame 4, the climbing mast 12 is cut off and the lowering of the lotus stand 5 is completed.

When dismantling the entire lift, the lift continues descending while sequentially cutting off the guide rails 3 in parallel with step 7, and finally the entire lift is dismantled.

The lotus platform of the present invention is lifted and lowered automatically by moving the lotus platform 5 relative to the climbing mast 12, which is longer than one story, by expanding and contracting the distance between the lotus platform 5 and the lifting frame 4 like an inchworm. The reaction force of the lifting and lowering is applied to the frame body 1 through the outriggers which are always extended alternately.

The control device 20 mainly controls the operation of the electric motor 15 by using push buttons to operate the power supply and the expansion and contraction between the lotus stand 5 and the lifting frame 4 due to the relative movement between the pinion and the rank due to forward and reverse rotation. Climbing mast 12 to 1
Naturally, when the length is set to one story, there is no need to repeat the alternating raising and lowering of the lotus stand 5 and the lifting frame.

(Effects of the Invention) The present invention provides an elevating device between the lotus stand and the lifting frame of a normal lift, supports the outriggers provided on the lotus stand and the lifting frame alternately on the frame body, and drives the electric motor to mutually move the outriggers. Since the lifting frame and lotus platform are moved up and down stably back and forth along the mast while absorbing the reaction force, the lotus platform can be raised and lowered in an inchworm-like manner as if a climbing mast were being expanded and contracted. is always supported by the frame, and the lotus stand can be moved up and down by its own blade.Furthermore, there is no need to prepare an excessive space above the climbing mast.Therefore, with this lifting method and device, large This eliminates the need for multiple tower cranes and all associated obstacles to achieve the desired objective.It also eliminates the need for high-precision rails throughout the lift compared to traditional climbing rail methods. This also reduces the capacity of the lifting drive or avoids complicated load support operations.Furthermore, since the reaction force of lifting is taken by the frame, it is possible to reduce the capacity of the lifting drive or avoid using lifting rails or independent masts. It is not necessary, and the guide rail only needs to function as a guide for lifting and lowering.

[Brief explanation of the drawing]

The drawings are for explaining an apparatus for carrying out the lifting method of the present invention, in which Fig. 1 is a front view of the lift, Fig. 2 is a side view thereof, and Fig. 3 is a plan view mainly showing the lotus base of the lift. FIG. 4 is a front view of a conventional lift. 1... Frame body, 2... Hoistway, 3... Guide rail, 4... Lifting frame, 5... Lotus stand, 6... Counterware Udriger, 12... Climbing mast , 13... Rack gear, 14... Drive frame, 15... Electric motor, 16... Base, 17... Bracket, 18... Guide roller, 19... Pinion, 2o... Control device, 41... Loading platform, 52... Outrigger - Figure 3

Claims (4)

[Claims] (1) In the method of raising and lowering the lotus platform of a lift in which a lifting frame is installed in the hoistway so that it can be raised and lowered, the lift has outriggers installed at both ends of the lifting frame and a vertical line between the lifting frame and the lotus stand. A climbing mast with a length of one story or more, a rack gear attached to the entire length of this mast, a drive frame attached to both ends of the lotus platform so as to be attached to the mast, and a , an electric motor having a driving pinion that meshes with the rack gear, and a lifting device including:
Raise the lifting frame to the top floor and fix it to the frame, connect the climbing mast vertically between the lotus stand and the lift frame, and when the outrigger of the lift frame is fixed to the frame, release the outrigger of the lotus stand and connect the pinion. is rotated in a predetermined direction to raise and lower the lotus stand, and when the lotus stand is fixed in a new position, the lifting frame is released and the lifting frame is raised and lowered, and the lotus stand and the lifting frame are alternately moved while taking a reaction force to the frame body. A method for raising and lowering a lotus platform for a lift, which is characterized in that the lotus platform is raised and lowered one floor at a time in an inchworm-like manner, and after the lotus platform is fixed at the final part, the connection of the climbing mast is released. (2) A device for raising and lowering the lotus platform of a lift in which a lifting frame is provided in the hoistway so that it can be raised and lowered. 1 with a length of at least one story installed perpendicularly between the center line of the lotus stand and the center line of the lotus stand from the base set above.
A pair of climbing masts, a rack gear attached to the lifting frame side along the entire length of the mast, a drive frame attached to both ends of the lotus stand so as to be attached to the mast via guide rollers, and a rack gear attached to the drive frame. and an electric motor having a drive pinion meshing with the rack gear. (3) The lifting lotus platform lifting device according to claim 2, wherein the climbing mast and the rack gear are configured to be separable in the length direction. (4) The lifting lotus platform lifting device according to claim 2, wherein the length of the climbing mast and the rack gear is approximately the length of one floor.