JP2002046961A - Method for extension of elevator track for construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To extend a track while bearing the load of a carrier and accessories of a construction elevator on existing guide rails. SOLUTION: Construction elevator carrier 10 is temporarily fixed against vertical movement to existing guide rails 11. During the fixing, extension rail bodies 18 are connected to the lower ends of the existing guide rails 11. The construction elevator carrier 10 is unfixed from the existing guide rails 11 and lowered to the extensions to the guide rails 11. Those operations are repeated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention hangs a guide rail for mounting a lift of a construction elevator so that it can be lifted and lowered in a hole, and extends the guide rail downward as the hole is excavated. The present invention relates to a method for extending a construction elevator track.

[0002]

2. Description of the Related Art Elevators for construction are widely used for construction work and civil engineering work, and various construction methods have been tried also for adding guide rails for lifting and lowering a carrier. In addition, the addition of guide rails is not only performed from the bottom upwards, but also in the case of reverse construction (sakauchi) method in building construction, for example, the method of performing downward from the ground floor is also used. JP-A-9-32
No. 8271 can be mentioned.

In the above-mentioned invention, a method is proposed in which a member called an outrigger is moved in and out to fix an elevator carrier, and a pair of left and right masts is lowered therebetween.
However, when the transporter is fixed as in the present invention, the strength for supporting the transporter is insufficient, and particularly when the distance between the wall such as a shaft and the transporter is large, the strength of the supporting portion of the member fixing the transporter is reinforced. Need to be done. Doing this for each part requires a significant amount of work.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned point, and an object thereof is to receive a load of a carriage and accessories of a construction elevator by an existing guide rail. This eliminates the need to reinforce the strength of the support portion as in the related art. Another object of the present invention is to make it possible to extend the track of the construction elevator without relying on anything after installing, for example, a guide rail on the ground floor as an existing part.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a construction elevator, in which a carriage is temporarily fixed to an existing guide rail so as not to move up and down. Is connected to the lower end of the existing guide rail, and the process of removing the fixing of the construction elevator carrier to the existing guide rail and repeating the work of descending to the extension guide rail is repeated. To provide.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The method of extending a construction elevator track according to the present invention deals with the extension of a guide rail on which a lift of a construction elevator is mounted so as to be able to move up and down. The guide rail is suspended in the hole, and in many cases, starts from the place closest to the ground in the hole excavated on the ground floor, and extends the guide rail downward as the excavation of the hole progresses. Therefore, the existing guide rails start from the first installed guide rail and extend as they extend.

The guide rails guide the elevating mechanisms provided on the left and right sides of the transporter. Therefore, the guide rail can have a function of transmitting lifting power in addition to a simple lifting guide.
For example, a rack rail may be integrally provided with a guide rail, and a pin which meshes with a rack tooth may be provided with an ON in an elevating mechanism so that the carrier can be moved up and down by itself.

[0008] What consists of such a guide rail,
In the present invention, it is called a construction elevator track. In carrying out the extension of the track, the load of the transporter's own weight and accessories is relied on only the existing guide rails, and no other components are required. In the construction method of the present invention, during the extension, the elevator of the construction elevator is temporarily hung on the existing guide rails at both left and right ends, and is fixed so as not to be raised and lowered. Then, during latching, the extension rail is connected to the lower end of the existing guide rail.

[0009] The added rail body becomes a newly provided guide rail and is also a track extension. Therefore, the carrying device of the construction elevator fixed to the existing guide rail is removed, and the carrying device is extended. It can be lowered to the guide rail. By repeating the above operations, the elevator track is extended. As described above, the present invention is a construction method for extending a construction elevator track downward.
However, in addition to this, it is of course possible to simultaneously perform upward stretching and carry out the above-described reverse driving method or a method equivalent thereto.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a construction elevator track extending method according to the present invention.

FIG. 1 to FIG. 3 show a state in which a carrier 10 of a construction elevator is set up and down in a hole G being excavated on the ground floor 1F. The transporter 10 is attached to a pair of left and right guide rails 11, 11 so as to be able to move up and down. Each guide rail 11 is suspended by a rail support 12, and the rail support 12 is erected across the hole G. It is passed to the support beam 13. Numeral 14 is a part of the building on the ground floor and provides a supporting point for the support beam 13.

The pair of left and right guide rails 11, 11 are first installed as existing guide rails. The transporter 10 is composed of a loading table 15 surrounding an enclosure called a cage, and a power unit 16 of an elevating mechanism provided at its lower part for raising and lowering by itself. Guide rails 17 are provided.

The base guide rails 17, 17 are formed by adding the required number of rails (to be described later) of the same standard as the extension rails 18 (described later). It is a member that constitutes the elevator track of the rail. Therefore, at the stage of installing the uppermost existing guide rails 11 and 11 and lowering the transporter 10, the existing guide rails 11 and 11 are connected to the base guide rails 17 and 17 at the stage of performing the stretching method of the present invention. , Temporarily separate.

The extension rail body 18 constituting each of the guide rails 11 to 17 has, for example, a trussed column structure and has a predetermined length as a unit, and abuts connection ends 19 provided at both upper and lower ends. And the bolts are connected to form continuous guide rails 11 to 17. Further, the extension rail body 18 has roller guides 21 and 21 made of channel-shaped members as shown in FIG. 4 to prevent the carriage 10 from deviating in the horizontal direction, and is provided on each of the left and right sides of the carriage 10. A pair of rollers 2 that rotate around the longitudinal axis
2 and 22 are disposed in a channel, and a pair of rollers 23 and 23 that rotate around the left and right axes are disposed outside the channel.

The carrier 10 is moved up and down by elevating mechanisms 20 provided on both right and left sides thereof. The lifting mechanism 20 includes a driving unit 25 illustrated as a pinion that meshes with a rack of a rack rail 24 provided inside each of the guide rails 11 and 17.
And braking means 26 indicated by a similar pinion. The driving means 25 receives power from a deceleration motor 27, and the braking means 26 operates under the control of a fall prevention device 28 known as an electromagnetic brake.

As described above, the transporter 10 integrally includes the base guide rail 17.
See FIG. 2 and FIG. Left and right guide base rails 17, 17
Is integrally connected at its lower end by a connecting frame 29 and is provided with an anti-tilt shaft 30 provided on the power section 16.
Since the inclination is prevented by this, it is possible to move or move up and down without generating distortion.

Further, a latch 31 is provided on the left and right of the transporter 10.
Is prepared. The latch 31 is capable of protruding to the left and right of the transporter 10, and is latched to guide rails 11, 17 located on the left and right sides to temporarily load the entire loader having the base guide rail 17 integrally. This is a means for keeping the minute guide rail 11 borne. Latch 3
1 is retracted to a position that does not hinder the vertical movement of the transporter 10 when the transporter 10 moves up and down.

The construction elevator according to the present invention is carried to a position where construction work such as construction or civil engineering is started, and is used when extending the track downward and, if necessary, upward. As shown in FIG. 2, the construction start position in the embodiment is the ground floor 1F, from which the support beam 13 shown by the H-beam crossing the hole G being excavated downward is received by the receiving member 41.
And a rail support 12 on a support beam 13.
12 are installed at required intervals. 1 and 3 correspond to this state. Each rail support 12 is pre-attached with an additional rail body 18. If not, at least one rail 18 is attached to each rail support 12 at this stage. These first rail bodies 18 become the existing guide rails 11 in the next step.

In the next step, the existing guide rails 1
1 is equipped with a carrier 10 integrally having up to a base guide rail 17. Work is carried using a crane 1
0 is suspended, the guide rollers 22 and 23 and the elevating mechanism 20 are set on the existing guide rail 11, and the latch 31 which has been in the retracted state which does not conflict with the guide rail 11 is moved to be prepared on the guide rail 11 side. Is hooked on the hooking partner 32 that has been locked. As a result of the locking, the transporter 10 and its entirety are suspended from the existing guide rail 11 as shown in the figure. FIG. 2 corresponds to this state.

In this state, the base guide rail 17 and the existing guide rail 11 are widened, and the next extension rail 18 is inserted there. The extension rail body 18 is provided from the inside of the transporter 10 or the transporter 1.
0 to the lower end of the existing guide rail.
One of the two extending rail bodies 18 described in FIG. As shown in FIG. 7, the crane 33 has previously loaded the loading table (also referred to as a cage) from the side door to the inside. The other one of the extension rails 18 in FIG. 6 is described as being transported by the crane 33 to the target location of the extension.

In order to transport the extension rail 18 loaded on the transporter 10 to a target extension position, the transporter 3
4 may be provided on the carrier itself. FIG. 8 shows an example. The transporter 34 includes a suspending member 35 provided to be able to protrude outward from the transporter 10,
6 and its winding machine 3
8, 38 '. The transporter 34 has a handle 39, which is pushed and pulled left and right to move the suspension member 35, and also operates the winders 38 and 38 'to transport the extension rail body 18 to a target position.

The extension rail body 18 transported to the target position is aligned with the existing guide rail 11 and the connection end 19, and the connection ends 19, 19 are connected to each other with bolts and nuts. The same coupling means is shown in FIG. When the extension of the orbit for one step is completed in this way, the latch 31 is moved to the retreat position, and then the lifting / lowering mechanism 20 is operated to lower the transporter 10 to the extension track.
Temporarily fixes the transporter 10 at the lowered position. Thereafter, the operation of extending the rail 18 for the next stage in the same manner and lowering the transporter 10 to the extending track is repeated to extend the track to a required position.

When the track has been extended to the required position, the level adjuster is laid on the floor B made of discarded concrete or the like, or the carrier 10 is placed without laying. Completion of the extension of the railroad means that the construction elevator has been installed, and the way to transport the construction equipment, materials, personnel, etc. after the ex-post is secured.

[0024]

Since the present invention is constructed and operates as described above, it is possible to extend the track downward while receiving the load such as the weight of the elevator car for construction work by the existing guide rail. Because it is possible, the problem of strength of the support part in the conventional method where the carrier itself is supported on the floor of each floor etc. is eliminated, and after installing the existing guide rail, the track extension without relying on anything This makes it possible to streamline the construction and make it more efficient.

[Brief description of the drawings]

FIG. 1 is a plan view of an existing guide rail showing an embodiment of a construction elevator track extending method according to the present invention.

FIG. 2 is a front view of the state shown in FIG. 1 with a carrier attached thereto.

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a plan view showing a lifting mechanism of the transporter.

FIG. 5 is a front view of the same.

FIG. 6 is a front view showing a construction state.

FIG. 7 is an explanatory front view showing a loading step of a rail for replenishment;

FIG. 8 is an explanatory front view showing an example of a transporter.

Claims (2)

[Claims] 1. A construction method for suspending a guide rail for mounting a lift of a construction elevator so as to be able to ascend and descend within a hole, and extending the guide rail downward following the progress of excavation of the hole. , Temporarily fix the elevator of the construction elevator to the existing guide rail so as not to go up and down,
During the fixing, a step of connecting the extension rail body to the lower end of the existing guide rail, removing the fixing of the construction elevator carriage from the existing guide rail, and lowering the extension elevator to the extended guide rail is included. Extension method of elevator track for construction. 2. The construction elevator track extending method according to claim 1, wherein the elevator of the construction elevator is temporarily hung on a guide rail for the existing construction, and is fixed so as not to elevate.