JP2804706B2 - Lifting guide device for overhead traveling crane - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhead traveling crane, and more particularly to a lifting guide device for an overhead traveling crane that prevents swinging and rotation of a suspended load.

[0002]

2. Description of the Related Art Conventionally, when lifting a load with an overhead traveling crane, a wire is slung on the load, a hook of the crane is hooked on the wire, and a winch of the crane is driven to lift the load.
After the load is lifted to a predetermined height, the overhead traveling crane travels to a target position, and lowers and loads the load.

[0003]

In the case of a strong lifting force using an overhead traveling crane, when the wind force at the work site is strong, the suspended load is subject to the strong wind and rotates or swings around a vertical axis, causing the suspended load to fall. There is a risk that the suspended load may collide with other surrounding objects and the degree of danger increases. In addition, an increase in the degree of risk leads to a delay in a work process and an increase in cost.

[0004] Therefore, there is a technical problem to be solved in order to improve the safety of the lifting work and prevent the delay of the construction work by suppressing the rotation and swing of the suspended load regardless of the work environment such as wind power. Therefore, an object of the present invention is to solve the above problems.

[0005]

SUMMARY OF THE INVENTION The present invention is proposed to achieve the above-mentioned object, and at least two or more sections are provided between the vicinity of a loading place on the ground of an overhead traveling crane and the upper part of a building frame or the like. A guide wire is stretched vertically, the guide sheave of a sheave frame having guide sheaves at equal intervals to the guide wire is engaged with the guide wire, and a material gripping device suspended from an overhead traveling crane or On one side of the sheave frame, a connecting device for connecting the material gripping device and the sheave frame is provided so that the material gripping device and the sheave frame can be freely coupled / separated, and beside the rising stop position of the material gripping device. A sheave frame support device having a support member such as a rotating arm is provided, and the support member is protruded into an elevating path of the sheave frame so as to protrude. There is provided a lifting guide device forming the overhead traveling crane to be able support the sieve frame with support member.

[0006]

The sheave frame provided with the guide sheave is engaged with a vertical guide wire disposed on the side of the loading position of the overhead traveling crane. At least two or more guide wires are provided in parallel, and the sheave frame engaging with the plurality of guide wires does not rotate in the horizontal direction.

A material gripping device suspended from an overhead traveling crane is provided with a connecting device capable of connecting a sheave frame. The connecting device can be moved up and down integrally with the sheave frame connected, and the material can be lifted when the material is lifted. No rotation or swing occurs. After the material is lifted to a predetermined position, the sheave frame is supported by a sheave frame support device arranged on the side of the guide wire, the coupling device is released, and the sheave frame is released from the material gripping device. And can travel to a target position.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. In FIGS. 1 and 2, reference numeral 1 denotes a construction device disposed above a steel frame of a building, and reference numeral 2 denotes an overhead traveling crane. The traveling carriage 3 of the overhead traveling crane 2 is suspended on rails 4, 4, 4 provided on the construction apparatus 1, and travels in the left-right direction in FIG.
A material gripping device 6 is connected to a wire rope wound around a lifting winch (not shown) of the traveling trolley 3, and the material gripping device 6 is moved by winding the wire rope as shown in FIG. Can be fixed by pressing against the connection base 7 provided on the lower surface of the base member.

On the side of the overhead traveling crane 2, two guide wires 8, 8 are disposed vertically, and the guide wires 8, 8 are provided.
One end of 8 is engaged with the horizontal frame 1a of the construction apparatus 1, and the other end is wound around an auto tension winch (not shown) installed near the lower loading place to automatically control the tension. . As shown in FIG. 2, the guide wires 8, 8 are arranged in parallel along the traveling direction of the overhead traveling crane 2, and the sheave frame 9 is engaged with the guide wires 8, 8.

The sheave frame 9 has three guide sheaves 10, 10 fixed to the left and right sides of a rectangular main frame 9a as shown in FIG. 3 and FIG. Rectangular sub-frames 9b, 9b are projected. As shown in FIG. 4, the triple guide sheaves 10, 10 are arranged in a staggered arrangement of upper, lower, and lower three-stage sheaves 11, 12, and 13, and the upper and lower sheaves 11, 13 and the middle-stage sheave 12 guide wire 8 , 8 are sandwiched from the front and rear to suppress the sheave frame 9 from swinging back and forth and left and right.

Then, as shown in FIG. 2, the main frame 9a
A U-link 14 is fixed to a central portion of the upper surface of the device to lock an end of a wire rope 15, and this wire rope 15 is wound around an emergency winch 16 fixed to the construction device 1. The emergency winch 16 is controlled to hoist and lower in synchronization with the lifting winch of the overhead traveling crane 2.

On the other hand, as shown in FIGS. 3 and 4, the material gripping device 6 of the overhead traveling crane 2 includes an upper turntable support 6a suspended by a wire rope of a lifting winch.
And a turntable 6b loosely fitted to the turntable support 6a and rotatable in the horizontal direction.
On the lower surface of the turntable 6b, L-shaped hooks 17, 17... For gripping materials such as beams and columns are projected, and the expansion and contraction operation of the L-shaped hooks 17, 17. The battery 18 installed on the top and the hydraulic pump 1 powered by the battery 18
9 driven.

On both left and right end surfaces of the turntable 6b, connecting devices 20, 20 for holding the above-described sheave frame 9 are mounted. Coupling devices 20, 20
As shown in FIG. 4, a hook 21, a hydraulic cylinder 22 and links 23, which are vertically opposed to each other in the vicinity of the front surface (right in FIG. 4),
1. A link 2 is formed by linking levers 21a, 21a provided at the rear end of the hydraulic cylinder 22 to a rod of a hydraulic cylinder 22 disposed horizontally.
3,23.

When the pressure oil is supplied from the hydraulic source on the turntable 6b to the hydraulic cylinders 22, 22 to extend the rods of the pair of right and left hydraulic cylinders 22, 22, the hooks 21, 21, 21 are extended. , 21 are rotated from the state shown by the solid line to the position shown by the chain line in FIG.
, The material gripping device 6 and the sheave frame 9 are connected to each other.

As shown in FIG. 1, a sheave frame support device 24 is fixed to the vertical frame 1b of the construction device 1. The sheave frame support device 24 includes a main frame 24a fixed to the construction device 1 as shown in the bottom view of FIG.
A support frame 24b is pivotally connected to the main frame 24a and the support frame 24b with a hydraulic cylinder 26 interposed therebetween to raise the support frame 24b from a hanging state to a horizontal state as shown in FIG. Can be. When the support frame 24b is hung, the sheave frame 9 is not hindered from moving up and down.

Next, the procedure of a lifting operation using the lifting guide device of the present invention will be described. First, the rods of the hydraulic cylinders 22 and 22 of the coupling devices 20 and 20 provided in the material gripping device 6 are extended, and the sheave frame 9 is held by the hooks 21, 21, 21 and 21 as shown by a chain line in FIG. 4. Pinch,
It is assumed that the material holding device 6 and the sheave frame 9 are connected. At this time, the support frame 24b of the sheave frame support device 24 shown in FIG. In this state, the lifting winch of the overhead traveling crane 2 and the emergency winch 16 are operated synchronously, whereby the material gripping device 6 and the sheave frame 9 can be integrally moved up and down from the uppermost stop position to the ground.

When the material gripping device 6 grips the material at the loading place on the ground and moves up to the uppermost stop position together with the sheave frame 9, the support frame 24b of the sheave frame support device 24 is raised, The hooks 21, 21, 21, 21 are opened by contracting the hydraulic cylinders 22, 22 of the connecting devices 20, 20, and the material gripping device 6 and the sheave frame 9 are separated. The released sheave frame 9 is supported by the support frame 24b, and the material gripping device 6 travels on the rails 4, 4, and 4 together with the traveling carriage 3, and conveys the material to a destination. Incidentally, if the sheave frame support device 24 fails, the support frame 24
Even if b is turned over, the sheave frame 9 is supported by the emergency winch 16, so there is no possibility that the sheave frame 9 will fall.

The overhead traveling crane 2 which has returned to the unloading position after transporting the material, reverses the procedure described above, and the hydraulic cylinders 22 and 2 of the coupling devices 20 and 20 provided in the material gripping device 6.
The rod 2 is extended to hold the sheave frame 9 and the support frame 24b of the sheave frame support device 24 is turned over, thereby lowering the ground together with the sheave frame 9 again to lift the next material. to go into.

It should be noted that the present invention is not limited to the above-described embodiment, but various modifications can be made within the technical scope of the present invention, and the present invention extends to those modified embodiments. Is natural.

[0020]

According to the present invention, as described in detail in the above embodiment, since the material gripping device of the overhead traveling crane moves up and down integrally with the sheave frame engaged with two or more guide wires, the load of the suspended load can be reduced. The posture of the suspended load can be kept constant irrespective of the center of gravity, strong wind, etc., and work safety is improved. In addition, by improving safety, it is possible to eliminate the risk of process delay due to weather conditions and the like, and to eliminate the need for an operator to correct the posture of the material being lifted, thereby shortening the construction period and saving labor. It can contribute to cost reduction.

[Brief description of the drawings]

FIG. 1 is a front view showing a lifting guide device and an overhead traveling crane according to the present invention.

FIG. 2 is a view taken along the line AA of FIG. 1;

FIG. 3 is a plan view of a sheave frame and a material gripping device.

FIG. 4 is a front view of a sheave frame and a material gripping device.

FIG. 5 is a bottom view of the sheave frame and the material gripping device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Construction apparatus 2 Overhead traveling crane 3 Traveling trolley 6 Material holding device 8 Guide wire 9 Sheave frame 10 Triple guide sheave 16 Emergency winch 20 Connecting device 24 Sheave frame support device 24b Support frame

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Nao Nagao 2-14 Agebacho, Shinjuku-ku, Tokyo Inside Kumagaya Gumi Tokyo Branch (72) Inventor Hirokazu Tanaka 2-1 Tsukudocho, Shinjuku-ku, Tokyo Stock Company (72) Inventor Mitsuhiro Naito 2-1-1 Honohara, Toyokawa City, Aichi Pref. Co., Ltd. Inside Toyokawa Plant, Kumagaya Gumi (56) References JP-A-2-249892 (JP, A) JP-A Sho52 JP-A-81850 (JP, A) JP-A-4-266396 (JP, A) JP-A-59-120789 (JP, U) JP-A-4-100186 (JP, U) (58) Fields investigated (Int. . ^6, DB name) B66C 13/00 - 15/06

Claims (1)

(57) [Claims] At least two or more guide wires are vertically stretched between a vicinity of a loading place on the ground of an overhead traveling crane and an upper part of a building frame or the like, and guide sheaves at equal intervals to the guide wires are provided. A coupling device that engages the guide sheave of the sheave frame having the guide wire with one of the material gripping device suspended from the overhead traveling crane or the sheave frame and that couples the material gripping device and the sheave frame is provided. A material holding device and a sheave frame that can be freely coupled / separated, and a sheave frame support device having a support member such as a rotating arm is disposed beside a rising and stopping position of the material holding device. Of the overhead traveling crane formed so that the sheave frame can be supported by the support member by projecting the Heavy guide device.