JP2002241067A - Construction lift equipment - Google Patents

Abstract

(57) [Summary] [Problem] At the time of climbing work with a lift device,
The extra length of the wire rope is rationally extended without direct manual operation, and the head can be extended efficiently in a short time. SOLUTION: In a construction lift device having a transporter 3 guided by a supporting steel tower and moved up and down by driving by a series of wire ropes 10, a counterweight 20, and an endless hoisting machine 11, the wire rope 10 is tensioned by a tension winch 30. The extra length is wound around the rope reel 40 so that the force is maintained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire rope drive type construction lift device, and more particularly, to a counterweight suspended so as to be equilibrium with a carrier driven up and down along a supporting steel tower. The present invention relates to a construction lift device which is operated by a series of wire ropes and can easily increase the lift as the work progresses.

[0002]

2. Description of the Related Art Conventionally, construction lifts have a steel tower added to increase the lift according to the progress of the construction process of a building or the like. In addition, in order to reduce the lifting drive force of the transporter rationally, a method is adopted in which the counterweight is circulated around a guide sheave provided at the top of the steel tower, connected to the transporter with a rope, and balanced. For this purpose, on the top of the pylon, a top gantry for movably disposing a guide sheave for guiding and supporting a rope for counterweight is attached movably along the pylon.

[0003] In such a construction lift, the wire rope for suspending and driving the carriage and the counterweight cannot be extended on the way if the lift of the carriage is extended. You need to prepare a wire rope. Usually, such construction lifts use long wire ropes that suspend and drive the carriages and counterweights, because only a part of them is used during normal work until the maximum lift is reached. It is fixed at a position away from the machine with fixing hardware and the extra length is stored. In addition, an endless winch is used as a hoist because an extra length of wire rope must be fed out when the lift is extended.

[0004]

As described above, the extra length of the wire rope from the hoist is generally fixed at a position away from the hoist and wound around a drum or the like for storage. Therefore, in the operation of extending the lift of the transporter (generally called climbing), it is necessary to pay out the extra length of the wire rope while maintaining the tension at the fixing portion for the extra length of the wire rope. In such a climbing operation, a system has been conventionally adopted in which a wire rope pulling device is used to gradually loosen the rope and to perform the climbing.

However, in such a working method,
Since the wire rope pulling device is manually operated, there is a problem that the operation involves danger. Moreover,
As safety is prioritized, it takes a lot of time to prepare, and as the size of the lifting device increases, the work speed, such as preparation work and the operation of drawing out the wire rope, also decreases, and the work efficiency decreases. There is a problem that cannot be avoided.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and at the time of climbing work, the extra length of the wire rope is rationally extended without direct manual operation to extend the lift. It is an object of the present invention to provide a construction lift device that can be efficiently implemented in a short time.

[0007]

In order to achieve the above object, a construction lift device according to the present invention is provided with a carrier and a counter which are guided by a supporting tower and moved up and down by being driven by a series of wire ropes. In a construction lifting device having a weight and an endless hoist, the wire rope is configured to be held in tension by a tension winch, and the extra length thereof can be wound on a rope reel. It is characterized by the following.

According to the present invention, the extra length of the wire rope is wound around the rope reel, and the tension of the rope on the use side of the wire rope is maintained in a tensioned state by the tension winch. To do this, once the tension holding means incorporated in the tension winch is released, the tension winch is driven and the wire rope is extended from the rope reel by a required amount, and in that state, the guide sheave support ( The operation of elevating the top end stand to the required height position is facilitated, and the operation time can be remarkably shortened, and the operability can be improved. After the required amount of wire rope has been drawn out, the normal state can be returned by returning the tension holding means released in the tension winch to its original state.

It is preferable that a ratchet type tension holding means is incorporated in the tension winch, and the winding drum can be reversed when the fixing pin of the ratchet pawl is removed.
With this configuration, the tension of the wire rope wound around the winding drum is secured by the ratchet-type tension holding means, and a simple configuration can be provided in which the tension holding means can be fixed and released by attaching and detaching the fixing pin of the ratchet pawl. .

A support beam is provided on both sides of the counterweight so as to be able to move in and out in synchronization with the horizontal direction, and the support beam is supported by a horizontal connecting member of a steel tower during climbing to temporarily support the counterweight. It is good to be able to be configured.
By doing so, the operation of temporarily depositing the counterweight in the middle part of the supporting tower at the time of elevating the lift (during climbing) can be easily and safely handled, and the working efficiency can be improved. is there.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a construction lift device according to the present invention will be described with reference to the drawings.

FIG. 1 is an overall front view of a construction lift apparatus according to the present invention, FIG. 2 is a view taken along the line AA of FIG. 1, FIG. 3 is a view of a roping procedure for lifting and lowering a transporter, and FIG. The plan view (a), front view (b), and right side view (c)
FIG. 5 shows a front view (a) and a plan view (b) of the counterweight, and FIG. 6 shows a side view of the counterweight.

The construction lift device of this embodiment is guided by a pair of left and right support towers 1 and 1 installed at required intervals and guide rails 2 and 2 provided along these support towers 1 and 1. A carrier 3 having a long carrier which is mounted so as to be able to move up and down, and a carrier top 6 and a counterweight top 7 which are attached to the tops of the support towers 1 and 1 and which can be moved. A wire rope 10 for suspending and driving the transporter 3 around a guide sheave to be provided, an endless hoisting machine 11 for driving the same, and a tension winch 30 and holding means (rope reel 40) for the extra length of the rope. I have.

The pair of left and right supporting steel towers 1 and 1 are erected at a required height by adding a steel tower segment having a rectangular frame structure and a predetermined length, and are provided at required heights. Guide rails 2 and 2 are provided on both sides of the steel tower, respectively, and the counterweight 20 can be moved up and down in the space inside the steel tower. At the specific position near the upper side of the left and right outer surfaces of each of the tower segments, a support member 4 of a top connecting column is attached.

The left and right supporting towers 1 are supported by a supporting member 5 on a structure A to be constructed, for example, on the side opposite to the guide portion of the transporter 3 so that they can be installed upright.
On the top, a top stud for a transporter 6 guided by the guide rails 2 and 2 and separately lifted by a lifting machine such as a crane.
(Hereinafter, simply referred to as a top connecting stand 6) and a counterweight top connecting stand 7 (hereinafter, simply referred to as a top connecting stand 7) guided inside the pylon. 1 is fitted on the receiving members 4 and 4 so as to be removably mounted by fasteners. Rope sheaves 8, 8 '
And 9, 9 'are arranged so as to wind around the wire rope 10 for suspending the transporter 3 and the counterweight 20.

The carrier 3 is provided with the left and right support towers 1, 1
A pair of left and right elevating frames 3a, 3 that are guided and supported by guide rails 2, 2 along the front surface of each supporting tower 1 between them.
a, and a long carrier 3b erected with the ends thereof movably connected to and supported by the lifting frames 3a. The transporter 3 is provided with an emergency safety device.

The wire rope 10 for driving the carrying device 3 up and down is suspended by independent wire ropes 10 for each of the left and right lifting frames 3a, 3a, and the hoisting machines 11, 11 are driven to synchronize left and right. Is electrically controlled by the control unit. That is, the wire rope 1
0, one end is connected to the overload detector 12 (load cell) as shown in the roping procedure diagram of FIG. 3, and firstly, it is suspended around one of the rope sheaves 8 attached to the top unit 6 for the transporter. Wrapping around the hanging sheave 13 attached to the top of the elevating frame 3a, circling again the other rope sheave 8 'on the top link 6 and endless winding through the guide sheave 14 provided at the lower part of the support tower 1. It is wound around the drum of the machine 11. Further, the rope sheave 9 provided on the top end stand 7 of the counterweight 20 which can be raised and lowered inside the support tower 1 around the guide sheave 15.
Through the hanging sheave 16 attached to the top of the counterweight 20, again hanging down to the ground through another rope sheave 9 ′ on the top connecting stand 7, going around the guide sheave 17, and moving the tension winch 30. After being wound around the winding drum, the extra length portion can be wound around the rope reel 40.

The tension winch 30 is shown in FIG.
(B) As shown by (c), the reduction drive 31
A winding cylinder 32 is attached to the output shaft, and a ratchet wheel 33 is coaxially and integrally attached to one side surface of the winding cylinder 32. A ratchet claw 34 that locks in the loosening direction of the wire rope 10 to be wound is provided. Is provided. The ratchet pawl 34 is supported on its base by a pin 37 by a bracket 36 to be mounted on a base 35, and the end opposite to the pawl is normally locked by a lock pin 38, and the wire rope 10 is looped. The ratchet wheel 33 by the ratchet claw 34 is removed only when the work is carried out.
(Winding drum) is allowed to reverse. Reference numeral 39 in the figure denotes a fixing bracket including a presser foot for fixing the extra length side of the wire rope 10 and a receiving seat portion.

Next, as shown in FIGS. 5 and 6, the counterweight 20 is a rectangular block having a hanging sheave 16 attached to the top and set to have a required mass. Guide roller 2 which is guided in contact with a counterweight guide rail 25 provided inside the support tower 1 at the center of
2, 22 'are mounted symmetrically at upper and lower positions by brackets 23, 23. In addition, on the upper and lower sides on both the left and right sides, between the guide sheaves 9, 9 'on the top connecting stand 7 and the guide sheaves 15, 17 provided on the lower part of the tower.
A rope guide 2 which is slidably guided on an intermediate portion of the wire rope 10 wound around in tension.
4 are provided.

As shown in FIG. 5B, the guide rollers 23, 23 of the counterweight 20 are attached to two guide rails 25, 25 which are attached to the support tower 1 so as to protrude inward. , Respectively, so as to be sandwiched from the front-back direction, and to be guided so as to contact from the outside. In addition, wire guide 2
Numeral 4 is attached to the above-described tensioning wire rope 10 so as to be sandwiched between divided block-shaped members having lubricity, so that the wire rope 10 can be guided.
As the wire guide 24, for example, a member made of polyurethane resin is used so that the contact with the wire rope 10 is self-lubricating and the contact resistance is reduced to enable smooth movement.

Further, the counterweight 20 is provided with support means 26 (corresponding to a support beam of the present invention) which can be freely protruded and retracted in the horizontal direction along the front and rear surfaces thereof. The support means 26 includes a support frame 26a attached to the side surface of the weight, a slide support beam 27 supported by a slide portion 26b provided on the support frame 26a and having a guide portion in a lateral direction, and a slide support beam 27 of the slide support beam 27. And a drive mechanism 28. The drive mechanism 28 of the slide support beam is provided with a gear 28b that is manually rotated at the center on a mounting seat plate 28a attached to the center of the side surface of the weight, and the rack 28c, 28c So that the base ends of the rods 28d, 28d having the racks 28c are directly connected to the rear end of the slide support beam 27. A rod 28d provided with the rack 28c
The meshing with the gear 28b is maintained by a pressing roller 28e whose axis is located on a vertical line passing through the center of the gear 28b.

In this embodiment, the counterweight 20 has two auxiliary blocks 20a and 20b smaller than the main block suspended from the main block, so that the load on the transporter 3 during operation is small. It can be used separately in cases.

The construction lift apparatus of this embodiment constructed as described above has a long transporter 3 installed between a pair of left and right support towers 1 and 1 installed at a required height, as described above. A series of wire ropes 10 is wound around a hanging sheave 13 attached to each top of the left and right lifting frames 3a, 3a, and suspended.
It is driven up and down by the endless hoisting machine 11. In addition,
In the initial stage of the installation of the lift, the wire rope 10 is installed in a state where the lift is low at the time of the work, so that the wire rope 10 has many extra lengths, and this extra length is the rope reel 40 installed on the ground.
Wound around and stored. The series of wire ropes 10 is maintained at a predetermined tension by the tension winch 30 located on the near side of the rope reel 40.

As the work progresses and the lift of the transporter 3 is extended, as shown in FIG.
The temporary supports 50, 50 are attached to the lower part of the vehicle, and the transporter 3 is lowered.
Is received and the transporter 3 is temporarily deposited. Then support tower 1
Lifting equipment (eg, crane) for the steel tower segment 1a
Work on the existing tower. After that, the extra length portion of the tension winch 30 is released from the fixing bracket 39, and at the same time, the lock pin 38 of the ratchet pawl 34 is removed to release the engagement with the ratchet 33 on the side surface of the winding drum 32.
In addition, the counterweight 20 is attached to the supporting means 26.
Are projected so that they can be received on the support members 4 on the support tower 1 side.

In this state, the tension holding of the wire rope 10 by the tension winch 30 is released, so that the endless hoisting machine 11 is operated to lift the counterweight 20 once. At this time, the slide support beam 27 is
8 gear 28b is manually rotated to engage the rack 28.
c and 28c are drawn into the steel tower via rods 28d and 28d. Then, the counter weight 20
The slide support beams 27, 27 are separated from the support members 4, 4 provided on both outer sides of the support tower 1,
Become free. Then, after lowering the counterweight 20, the left and right slide support beams 27, 27
Are temporarily deposited in the lower tower-side supporting members 4 and 4 to be received.

After removing the tension acting on the wire rope 10 in this way, the tension winch 30 is driven to pull out the extra length of the rope from the rope reel 40, and at the same time, the endless winding machine 11 is also driven to drive the wire. The rope 10 is extended. When the wire rope 10 is unwound in this way, a crane, a chain block, or another separate lifting machine is used to separate a top stud 6 for a carrier and a top stud 7 for a counterweight.
Is raised to the top of the newly added supporting steel tower to carry out the refilling work.

During the remounting work of the top end units 6, 7, the extensible support members (not shown) provided on the top end units 6, 7 are contracted and lifted. Then, at the new installation location, the contracted support member is protruded and supported and fixed by the support member 4 outside the tower. Such an operation is performed in the supporting steel towers 1, 1 on both sides.

By doing so, the both-end connecting stand 6,7
Are refilled to the tops of the supporting towers 1 and 1 to which the wire rope 10 is reversed, the tension winch 30 is reversed to temporarily tension the wire rope 10, and the endless hoisting machine 11 is driven to drive the transporter 3.
Is lifted, and the temporary support tables 50, 50 that have been temporarily deposited are removed. Next, the drive mechanism 28 of the slide support beam in the support means 26 of the counterweight 20 is operated to retract (retract) the slide support beams 27, 27, and the support state of the counterweight 20 by the slide support beams 27, 27 is released. I do.

As a result, the transporter 3 and the counterweight 20 return to a state where they are suspended by the wire rope 10. In this state, when the left and right wire ropes 10 are tensioned to be operable by the tension winches 30, respectively, and the lifting and lowering of the transporter 3 can be performed, the ratchet claws 34 are engaged with the ratchets 33 in the tension winches 30, It is fixed by a lock pin 38. Further, the wire rope 10 extending from the tension winch 30 to the rope reel 40 is fixed by a fixing bracket 39. This prevents the extra length of the wire rope 10 from being fed out from the rope reel 40, and maintains the wire rope 10 in a normal state.
In addition, the extra length of the rope can be safely stored until the next head extension operation.

In this way, the lifting operation of materials and the like by the lift is performed, and when the lift is further extended by the progress of the operation,
What is necessary is just to repeat the said point.

As described above, according to the present invention, there is provided a construction lift device capable of extending a lift using a series of wire ropes, and when the lift is extended (during a climbing operation), a tension winch is provided. Is incorporated to allow the extra length of the wire rope to be extended and maintained in a tensioned state, so that the workability is significantly improved compared to the conventional climbing operation, and the wire rope is tightened by the tension winch. Since the work can be temporarily fixed and the tension can be adjusted at the time of feeding, the safety of the work can be ensured, the wire rope can be processed efficiently, and the work required for the extension work of the lift and the work time can be shortened. Having.

[Brief description of the drawings]

FIG. 1 is an overall front view of a construction lift device according to the present invention.

FIG. 2 is an AA view of FIG. 1;

FIG. 3 is a diagram of a roping procedure for raising and lowering a transporter.

FIG. 4 is a plan view (a), a front view (b), and a right side view (c) showing a tension winch.

FIG. 5 is a front view (a) and a plan view (b) of a counterweight.

FIG. 6 is a side view of the counterweight.

FIG. 7 is a diagram illustrating a procedure for extending a lifting head.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Support tower 2, 25 Guide rail 4 Support member 6 Carrying top stud 7 Counter weight 8, 8 ', 9, 9' Rope sheave 10 Wire rope 11 Endless hoisting machine 13, 16 Hanging sheave 14, 15 Guide sheave Reference Signs List 20 counterweight 24 wire guide 26 support means 27 slide support beam 28 drive mechanism for slide support beam 30 tension winch 33 ratchet wheel 34 ratchet claw 38 lock pin 40 rope reel 50 temporary support base of transporter

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideo Ono 1-10-4 Minamidai, Kawagoe-shi, Saitama Inside the Obayashi Corporation Tokyo Machinery Plant (72) Inventor Shunji Tanaka 2- 15-2 Konan, Minato-ku, Tokyo No. Obayashi Gumi Tokyo Head Office (72) Inventor Kazuhiro Inoue 1-7-20 Hanazono Minami, Nishinari-ku, Osaka City Inside Koshihara Co., Ltd. No. Fushi term in Koshihara Co., Ltd. (reference) 3F301 AA13 BB19 CA06 DD03 DD09

Claims (3)

[Claims] 1. A construction lifting device having a transporter guided by a supporting tower, moved up and down by driving by a series of wire ropes, a counterweight and an endless hoist, wherein the tension of the wire rope is maintained by a tension winch. A lift device for construction, wherein the extra length is wound up on a rope reel. 2. The lift according to claim 1, wherein a ratchet-type tension holding means is incorporated in the tension winch, and the winding drum can be reversed when a fixing pin of a ratchet pawl is removed. apparatus. 3. A counter beam is provided on both sides of the counterweight so as to be able to move in and out in synchronism with the lateral direction, and the counterweight is supported by a horizontal connecting member of a steel tower during climbing so that the counterweight is supported. 2. A structure which can be temporarily supported.
The lift device for construction according to 1.