JPH045649Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to the provision of a tip telescoping device in a horizontal distributor.

An example of a horizontal distributor made up of articulated booms connected by a vertical pivot is shown in Figure 1.
This is as shown in the front view and plan view of FIG.
In the figure, 1 is a multi-joint boom for running a concrete pressure pipe along, and this is a vertical pipe section 5, which connects the ends of a mounting frame 2, an intermediate boom 3, ... a tip boom 4, ...
It has a joint structure that can be pivoted and folded in a horizontal plane. In the illustrated example, the number of intermediate booms 3 is three, but the number may be increased or decreased depending on circumstances such as the distance to the placement position. In the figure, reference numeral 11 indicates a concrete pressure pipe from the pump, which is installed along each boom 3, 4 with fittings 12, . It is inserted into the vertical tube section 5 via...
The tip boom 4 is equipped with a gondola 14 and an operation panel 1.
5 is attached, and when an operator riding the gondola 14 operates the gondola 14 using the operation panel 15, the gondola 14 can be turned and moved forward and backward to a desired position while looking down on the pouring site from a close distance. The mounting frame 2 has a mounting plate portion 19 that is in close contact with a column (S construction, SRC construction, RC construction, temporary shelf pile, parent pile, etc.) 18 existing within or on the side of the concrete pouring surface,
By fastening the equipment holding fitting 16 to this, the equipment is firmly attached to the pillar 18.

However, the existence of the following problems in implementation was clarified.

Even outside the working radius, there are two or three places where you want to pour.

In order to move the position of the tip (tube tip), it takes time in the field because it is done only by rotating the joints mechanically.

The cases of and are shown in Figures 3 and 4. Fig. 3 shows the contents of the table, and the current situation is that parts A, B, and C are areas where pouring cannot be moved, and the concrete is poured within the work radius and is scraped out by input.
Also, Figure 4 shows the contents. For example, when the operator wants to move the tip, the operator must rotate each joint using the operating lever at hand, so the trajectory of the tip while it is moving is shown by the broken line in the figure. It becomes like this. Moreover, if there is an obstacle in the rotating part of the joint, the operator's operation for movement becomes complicated and takes time.

That is, in Fig. 3, many of the pouring sections are rectangular, so there are places A, B, and C where the boom cannot reach the corners depending on the work site. In addition, 6 in the figure shows a joining part. Also, in order to move from A to A' in FIG. 4, each joint must be operated. Note that 7 in the figure indicates an obstacle to be bypassed.

This proposal was made in view of the above circumstances, and its gist is to cover the pressure feed pipe along the tip boom with a slide pipe for expansion and contraction, and to attach the slide pipe to the guide section at the bottom of the frame of the tip boom. It is equipped with assembled slide rollers and suspended from a runnable ladder-like rack, and the pinion meshed with the ladder-like rack is rotated forward and backward by transmission from the drive device to integrate with the ladder-like rack. The problem lies in that the above-mentioned problems are solved by expanding and contracting the related slide pipes.

This will be explained in detail below based on the drawings.

Figures 5 a, e, b, c, d, and f are front views of the proposed device when the slide pipe is contracted and expanded, an enlarged view of the main parts, a side view, a detailed view of the ladder-like rack, and the pressure feeding pipe. In the explanatory diagram for assembling the slide pipe, the pressure feed pipe 11 that runs along the tip boom 4 is not directly connected to the boom via the fitting 12 as before, but is connected to the bottom surface of the tip boom 4. It is inserted (does not protrude) into the slide pipe 8 that hangs down from the attached guide part 9, and is placed along the slide pipe 8 side as shown in Figure f in detail. It is installed inside the slide pipe 8 with a seal 25 attached thereto and a seal 26 attached to the pressure feed pipe 11 side interposed therebetween. The figure shows the slide pipe 8 when it is retracted, that is, when it is retracted, and when it is expanded, only the slide pipe 8 moves to the right, and the concrete supply pipe extends forward.

Furthermore, the slide pipe 8 itself does not have an expansion/contraction function, and by moving, it causes the concrete supply channel to expand and contract.

A ladder-like rack 17 designed to have approximately the same dimensions as the slide pipe 8 equipped with sliding rollers 10 and capable of running is attached to the guide portion 9, and the slide pipe 8 is attached to the ladder-like rack 17 via a hanging arm 20. It is hanging down. The ladder-like rack 17 has a slide pinion 2 attached to the tip boom 4 body.
1 is engaged, and the slide pinion 21
A hydraulic motor or an electric motor mounted on the tip boom 4 receives transmission from a chain 23 from a drive device 22 consisting of a reduction gear via a relay pinion 24.

Therefore, the power transmission begins with the rotational movement of the drive device 22 being transmitted to the sliding pinion 21 attached to the main body of the tip boom 4, and the rotation of the pinion 21 causes the ladder-like rack 17 to slide, resulting in horizontal movement (telescopic movement). . Due to this horizontal movement, the slide pipe 8 suspended from the ladder-like rack 17 expands and contracts.

Therefore, according to the present invention, various effects as shown in the following equations can be achieved.

The range in which the distributor can be placed is expanded.

The current compactness can be maintained when stored.

The tip of the tip boom can be easily positioned (can be done with two operations, for example, turning and extending/contracting).

The time for positioning the tip of the tip boom is shortened.

[Brief explanation of drawings]

Figures 1 and 2 are a front view and plan view of a horizontal distributor, Figures 3 and 4 are explanatory diagrams of problems in concrete pouring in the conventional case, and Figure 5
Figures a, e, b, c, d, and f are front views of the proposed device when the slide pipe is contracted and expanded, an enlarged view of the main parts, a side view, a detailed view of the ladder-like rack, the pressure feeding pipe and the slide pipe. It is an explanatory diagram of the assembly. 1...Articulated boom, 2...Mounting frame, 3
... Intermediate boom, 4 ... Tip boom, 5 ... Vertical pipe section, 6 ... Connection section, 7 ... Obstacle, 8 ... Slide pipe, 9 ... Guide section, 10 ... Slide roller, 11... Concrete pressure pipe, 12... Fixture, 13... Swivel joint, 14... Gondola, 15... Operation panel, 16... Holding fitting, 1
7... Ladder-like rack, 18... Pillar, 19... Mounting plate part, 20... Hanging arm, 21... Slide pinion, 22... Drive device, 23... Chain, 24... Relay pinion.

Claims (1)

[Scope of utility model registration request] A slide pipe for expansion and contraction is mounted on the pressure feed pipe that runs along the tip boom, and the slide pipe is equipped with a sliding roller attached to the guide section at the bottom of the frame of the tip boom, and is suspended from a runnable ladder-like rack. , and a horizontal distributor characterized in that a pinion meshed with the ladder-like rack is rotated forward and backward by transmission from a drive device to expand and contract the slide pipe that is integrally connected to the ladder-like rack. Tip expansion/contraction device in the viewer.