JPH0732476Y2 - Liner for raw concrete input port - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a liner for a ready-mixed concrete inlet which is stretched on the inner surface of the inlet hopper of a ready-mixed concrete mixer.

“Conventional technology” A wear-resistant rubber liner was stretched over the hopper of the ready-mixed concrete of the conventional concrete mixer truck. However, the liner not only has poor adhesion to the inner surface of the hopper, but is pulled downward with the flow-down action of heavy fresh concrete, and the upper edge of the liner separates from the upper edge of the hopper. The liner could slip into the concrete mixer. Further, since the conventional liner has a conical shape that covers the entire inner surface of the hopper, and the upper edge of the liner is attached to the hopper by a plurality of retaining members, it is very troublesome to attach and detach to and from the hopper. There was a flaw.

"Problems to be solved by the invention" This is a raw concrete input port that adheres to the inner surface of the fresh concrete input hopper, and there is no risk that the upper edge will separate from the upper edge of the input hopper, and that can be easily attached to and removed from the hopper. The purpose is to obtain a liner for.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention is a liner for a fresh concrete input port that is attached to a fresh concrete input hopper with a reinforcing ridge on the outside of the upper end and is made of wear-resistant rubber. A fan-shaped liner is formed as a planar fan shape, and the upper end arc portion of the liner is curved outwardly in a cylindrical shape, and the lower end of the cylindrical curved portion is brought close to the outer surface of the liner to form a proximity portion, and The strip-shaped piece that opens in a direction away from the outer surface is provided at the lower end, and the reinforcing ridge of the hopper is fitted in the cylindrical curved portion so that the outer surface of the liner can be stretched on the inner surface of the hopper. Consists of a liner for ready-mixed concrete.

[Operation] Accordingly, when the fan-shaped liner 2 is stretched on the inner surface of the rear portion of the fresh concrete feeding hopper 1, the arc-shaped upper end portion 2 ″ coincides with the rear horizontal arc-shaped upper portion of the hopper 1 and the cylindrical curved portion 3 is provided.
As shown in FIG. 7, the reinforcing ridges 5 are fitted to the outside of the horizontal upper end of the hopper 1. In this way, the hopper 1 is interposed between the lower end 3'of the curved portion 3 and the outer surface 2'of the liner 2, and the lower end 3'is changed from the position shown in FIG.
Since the lower end of the strip-shaped piece 4 moves to the outer surface side of the hopper 1 and is pressed against the outer surface of the hopper 1, the cylindrical curved portion 3 covers the reinforcing ridge 5 and at the same time the liner is pushed out to the position shown in the figure. The upper surface of the liner 2 is sandwiched between the upper part of the liner 2 and the strip 4. Therefore, the main body of the fan-shaped liner 2 is in close contact with the inner surface of the hopper 1.

[Example] The ready-mixed concrete feeding hopper 1 is arranged in the rear upper end opening 7 of the concrete mixer 6 mounted on the chassis and fixed to the machine frame 8 of the chassis. The hopper 1 has an inverted conical shape and is provided on the outside of the upper end of the rear portion so as to circulate an arc-shaped reinforcing projection 5.
This forms a green concrete mixer truck.
A fan-shaped liner 2 made of wear-resistant rubber is stretched on the inner surface of the rear portion of the hopper 1, and the arcuate upper end portion of the liner 2 is curved outward to form a cylindrical curved portion 3, The curved lower end 3 ′ is brought close to the outer surface of the liner 2. The proximity portion t may be formed close to each other with a gap or may be contacted without a gap to form the proximity portion t. And the above curve part 3
The curved lower end 3'is provided with a strip 4 which opens downward from the outer surface 2'of the liner 2. The proximity portion t is preferably a gap narrower than the plate thickness of the hopper 1. Reference numeral 9 in the figure is a tapered surface formed on both side edges of the fan-shaped liner 2.

[Advantage of the Invention] Since the present invention is constructed as described above, since the arcuate upper end 2 ″ of the fan-shaped liner 2 closely engages with the rear horizontal arcuate upper end of the input hopper 1, the fan-shaped liner 2 has a main body. Not only does it bend in an inverted conical shape and come into close contact with the inner surface of the hopper 1, but the cylindrical curved portion 3 of the upper end portion 2 ″ covers and engages the reinforcing ridge 5,
Moreover, the hopper 1 is composed of the upper part of the liner 2 and the strip 4.
Since the upper part of the concrete is clamped, it has the effect of being able to sufficiently withstand the impact of dropping the fresh concrete and the downward pulling and pulling, and there is no risk of the liner 2 separating and descending from the hopper 1, and a highly safe liner for the fresh concrete inlet is obtained. . Further, the liner 2 of the present invention is convenient for carrying because it has a flat fan shape, and the tubular curved portion 3 is stretched in the hopper 1 only by fitting it into the reinforcing ridge 5 of the hopper 1. It has the effect that it can be attached and detached very easily. Further, since the liner 2 has a fan shape and is attached to a part of the hopper 1, it can be applied to hoppers of various shapes and has high compatibility.

[Brief description of drawings]

Fig. 1 is a front view showing a liner for a ready-mixed concrete input port of the present invention, Fig. 2 is a rear view of Fig. 1, Fig. 3 is a right side view of Fig. 1, and Fig. 4 is Fig. 1A-A. Longitudinal section by line, No. 5
Fig. 2 is a horizontal cross-sectional view taken along the line BB in Fig. 2, Fig. 6 is a partially enlarged vertical cross-sectional view of Fig. 4, Fig. 7 is a vertical sectional side view in a mounted state, and Fig. 8 is a fan-shaped liner and the hopper. FIG. 9 is a partially developed lateral cross-sectional view in a close contact state, and FIG. 9 is a vertical cross-sectional side view in a state in which the liner is attached to the feeding hopper. 1 ... Ready-mixed concrete feeding hopper, 2 ... Fan-shaped liner, 2 '... Outer surface, 3 ... Cylindrical curved portion, 3' ... Bottom end,
t ... Proximity part, 4 ... Strip.

Claims (1)

[Scope of utility model registration request] Claims: 1. A liner for a fresh concrete input port which is attached to a fresh concrete input hopper having a reinforcing ridge formed on the outer side of the upper end thereof, wherein the wear resistant rubber has a flat fan shape to form a fan-shaped liner. An upper end arc portion of which is bent in a cylindrical shape outwardly, a lower end of the cylindrical bent portion is brought close to an outer surface of the liner to form a close portion, and a strip-shaped piece which is opened in a direction away from the outer surface is provided at the lower end. A liner for a ready-mixed concrete input port, characterized in that a reinforcing ridge of the hopper is fitted into the cylindrical curved portion so that the outer surface of the liner can be stretched over the inner surface of the hopper.