JP3224773B2 - Hose tip suspension structure at concrete distributor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for mounting a heavy load such as a transport pipe (steel pipe) on the tip of a flexible hose extending from the tip of a boom of a concrete distributor. The present invention relates to a structure for suspending a heavy object at the end of a hose in a concrete distributor, so as not to be hung.

[0002]

2. Description of the Related Art As shown in FIG. 2, in a conventional concrete distributor, a hose basket 2 is attached to the tip of a boom 1 and the concrete basket can be transported along an arc-shaped hose guide portion 2A of the hose basket 2. By extending the flexible hose 3, the hose 3 is prevented from being bent and the concrete flows smoothly. When a heavy concrete transport pipe (heavy object) 4 is hung from the end of the hose 3, the end of the boom 1 is connected to the end of the boom 1 so that a load exceeding the allowable tensile load is not applied to the hose 3. Object 4 and wire rope 5
The load applied to the hose 3 is reduced.
In this case, the wire rope 5 is linearly arranged with both ends stopped at the hook 6 on the boom 1 side and the hook 7 on the transport pipe 4 side.

[0003]

By the way, in the above-mentioned conventional structure, since the wire rope 5 connected linearly suspends the transport pipe 4, the wire rope 5 becomes slack depending on the angle of the boom 1. In some cases, an excessive load was applied to the hose 3 or the wire rope 5 pulled the transport pipe 4 too hard, and the hose 3 was bent into an impossible shape.

In view of the above circumstances, the present invention suspends a heavy object such as a transport pipe without applying an excessive load to the hose or bending the hose into an unreasonable shape regardless of the angle of the boom. It is an object of the present invention to provide a structure for suspending heavy objects in a concrete distributor.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a boom tip is provided with a substantially arcuate hose guide portion for guiding a flexible hose for transporting concrete extending from the boom tip. And a heavy object attached to the end of the hose, a heavy object suspension structure at the end of the hose in a concrete distributor in which a wire rope supporting the load of the heavy object is stretched,
A wire rope is routed along the arc-shaped hose guide so that the center line of the hose and the center line of the wire rope coincide when viewed from the horizontal direction.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a view showing the structure of the embodiment. 1 is a boom that can be tilted up and down, 2 is a hose basket attached to the tip of the boom, and 3 is a flexible concrete transportation extending from the tip of the boom 1 for transporting concrete. It is a hose. The hose 3 extends along an arcuate hose guide 2A of the hose basket 2, and has a
A transport pipe (heavy load) 4 made of steel pipe is connected. Also,
A hook 7 at the upper end of the transport pipe 4 and a hook 6 at the tip of the boom 1
Is connected to both ends of a wire rope 5 for suspending and supporting the transport pipe 4, and an intermediate portion of the wire rope 5 is routed along an arcuate hose guide 2A.

In this case, the hose basket 2 is formed in a semicircular frame, and has a base portion 2 corresponding to a semicircular diameter portion.
a and 3 at radial intervals of 45 degrees from the midpoint of the base 2a.
It is composed of a main rib 2b, and an arc-shaped hose guide 2A arranged on the outer periphery of a semicircle and supported by the base 2a and the rib 2b. This hose basket 2
Is attached to the tip of the boom 1 by one end of the base 2a. In this case, the hose basket 2 is attached in such a manner that the base part 2 a is inclined at 45 degrees with respect to the boom 1, and the hose 3 extends from the tip of the boom 1.
Are inserted along the tangent of the arc-shaped hose guide 2A.

As shown in FIG. 1 (b), the hose guide 2A has a U-shaped receiving member 2c fixed to the tip of each rib 2b and the tip of the base 2 for receiving the hose 3, and It is composed of arc-shaped wires 2d and 2e connecting between the receiving members 2c and between the U-shaped receiving member 2c and the base portion 2a. Wire rope 5
Are arranged along both sides of the hose guide portion 2A. To receive the wire ropes 5, a U-shaped wire guide 10 is provided on the outer portion of the hose guide 2A at an appropriate interval in the circumferential direction. It is attached at. In this case, the hose 3 guided by the hose guide portion 2A
The hose guide portion 2A and the wire guide 10 are configured such that the center line of the wire guide 5 and the center line of the wire rope 5 guided by the wire guide 10 coincide when viewed from the horizontal direction.

Next, the operation will be described. In this structure, since the wire rope 5 is accurately guided along the same path as the hose 3, the transport pipe 4 can be reliably suspended and supported by the wire rope 5 regardless of the angle of the boom 1. Therefore,
Depending on the angle of the boom 1, the wire rope 5 may be slackened and an excessive load may be applied to the hose 3.
However, the hose 3 does not bend into an unreasonable shape by pulling the transport pipe 4 too hard.

The weight attached to the end of the hose 3 may be something other than the transport pipe 4. Further, the hose guide portion 2A does not need to be formed in an accurate arc shape, but may be formed in a smooth convex curved shape (referred to here as a substantially arc shape).

[0011]

As described above, according to the present invention,
Since the wire rope for suspending and supporting the heavy object at the end of the hose was routed along the substantially arc-shaped hose guide,
No matter what angle the boom is at, the hose will not be overloaded and the hose will not be overly shaped.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a structure according to an embodiment of the present invention;
(A) is a side view of the tip of the boom, and (b) is a cross-sectional view taken along the line Ib-Ib of (a).

FIG. 2 is a side view of a conventional structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Boom 2A Hose guide part 3 Hose 4 Transport pipe (heavy load) 5 Wire rope 10 Wire rope guide

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04G 21/04

Claims (1)

(57) [Claims] 1. A substantially arc-shaped hose guide portion for guiding a flexible hose for transporting concrete extending from the end of the boom is provided at the end of the boom, and is attached to the end of the boom and the end of the hose. Between heavy objects
In the heavy-weight suspension structure at the end of a hose in a concrete distributor on which a wire rope supporting the load of the heavy object is stretched, a center line of the hose and a center line of the wire rope may be aligned with each other when viewed in a horizontal direction. A heavy wire suspension structure at the tip of a hose in a concrete distributor, wherein a wire rope is routed along the arc-shaped hose guide portion.