JPH10238119A - Piping device for connection of crawler distributor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To absorb the positional deviation between a concrete pump and a conveying pipe at the time when the boom of a distributor body is slued. SOLUTION: A base frame 11 provided with an arm 13 horizontally extending outward to be horizontally rotatable is installed at the rear position of a distributor body 2. A transferable base 17 is arranged between the base frame 11 and the distributor body 2. The base end of a connecting pipe 14a supported on the arm 13 is connected to be horizontally rotatable to the front end 8a of a feeding pipe 8 of a concrete pump 7 and the front end of the connecting pipe 14a is connected to be horizontally rotatable to the base end of the connecting pipe 14b held on the transferable base 17 and further, the front end of the connecting pipe 14b is connected to be horizontally rotatable to the base end 1a of the conveying pipe 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection piping device for connecting a concrete transport pipe of a crawler type distributor used for dam construction or the like to a concrete pump.

[0002]

2. Description of the Related Art For example, there is a distributor based on a crawler crane as a machine for placing low slump concrete for dams containing aggregates of 80 mm.

[0003] Such a crawler type distributor is
As schematically shown in FIG. 3, a pipe having a diameter of about 200 mm is used as a concrete transport pipe 1.
Are arranged so as to be sequentially supported along the booms 4 of the respective stages from the upper revolving structure 3 of the distributor body 2 based on the crawler crane, and the tip of the transport pipe 1 facing the tip of the upper stage boom 4 is provided. The hose 5 is connected, and the base end 1a of the transport pipe 1 and the tip end 8a of the supply pipe 8 of the separately placed concrete pump 7 are connected by a rubber hose 6.

In the above crawler type distributor,
The concrete discharged from the separate concrete pump 7 is guided to the tip hose 5 through the supply pipe 8, the rubber hose 6, and the transport pipe 1, and is driven from the tip hose 5 to a target place. The displacement between the base end 1a of the transport pipe 1 and the tip 8a of the supply pipe 8 of the concrete pump 7 due to the turning operation of the boom 4 by the turning body 3 is absorbed by the bending of the rubber hose 6. .

[0005]

However, in the prior art,
In order to assist the movement of the rubber hose 6 during the turning operation of the boom 4, it is necessary to lift the rubber hose 6 using another lifting machine such as a crane, and the turning range of the boom 4 is limited by the movable range of the rubber hose 6. To be
It is necessary to change the supply piping 8 frequently, and furthermore,
The rubber hose 6 needs to be replaced frequently because it is easily worn, but there is a problem that the running cost is high because it is expensive.

Therefore, the present invention solves the problem of displacement from the concrete supply pipe due to the turning operation of the boom without lifting the rubber hose by the hoist or changing the setup of the concrete supply pipe. It is an object of the present invention to provide a crawler-type distributor connecting piping device capable of streamlining the casting operation and reducing the running cost.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention solves the above problem by allowing concrete discharged into a supply pipe from a concrete pump to pass through an upper revolving unit provided in a distributor body and a transport pipe extending along a boom. At the rear position of the distributor body in the crawler-type distributor that is to be cast, a base is installed, and the base end of the arm is formed at the center of the upper surface of the base so that the distal end projects horizontally. Is rotatably supported in the horizontal direction, the connection pipe is held on the arm, and a moving table is arranged between the distributor body and the gantry, and the connecting pipe is mounted on the moving table. , And the distal end of the connection pipe on the moving table is located at the proximal end of the transport pipe of the distributor body, and the proximal end of the connecting pipe on the movable table. The distal end portion of the connecting pipe on the arm,
Each of them is connected rotatably in the horizontal direction, and the base end of the connection pipe on the arm is connected to the tip of the supply pipe at the position above the center of rotation of the arm so as to be rotatable in the horizontal direction. The configuration is linked.

When the boom is pivoted through the upper revolving unit, the connecting pipe on the arm and the connecting pipe on the movable base are displaced following the displacement of the arm and the movable base.
The displacement between the supply pipe and the transport pipe of the concrete pump is absorbed.

Also, a circular rail is provided on the upper surface of the gantry,
In addition, since the liner or the rolling element to be engaged with the upper surface of the rail is attached to the intermediate portion of the arm, the rotational displacement of the arm is performed smoothly and stably.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 show an embodiment of the present invention, in which concrete discharged from a separate concrete pump 7 into a supply pipe 8 is transported, and the upper revolving unit 3 of the distributor body 2 is moved. In a crawler-type distributor that allows concrete to be poured from the hose 5 at the end of the transport pipe 1 through the transport pipe 1 along the boom 4,
A connection is made to the concrete supply pipe 8 via a connection pipe device 9 configured to absorb a positional deviation from the concrete supply pipe 8 due to the turning operation of the boom 4.

The connection piping device 9 will be described in detail. A gantry 11 having a circular rail 10 on the outer periphery of the upper surface is installed at the rear position of the distributor main body 2 and provided at the center of the upper surface of the gantry 11. A base end of an arm 13 disposed on the rotating support shaft 12 such that a tip end of the arm 13 projects outward in the horizontal direction from the gantry 11, and is rotatably supported in the horizontal direction. The liner 18 attached to the arm 10 is arranged in contact with the upper surface of the rail 10 to guide the horizontal rotation of the arm 13, and is further connected to the arm 13 along the arm 13. While holding the pipe 14a for connection, the distal end of the connecting pipe 14a is bent downward and arranged, and the base end is
The connection pipe 14a is bent downward and connected to the tip 8a of the concrete supply pipe 8 through the rotary support shaft 12 so as to be rotatable in the horizontal direction by a rotary joint 15.
3 so that it can be displaced integrally.

At the position between the distributor body 2 and the gantry 11, a suitable number of free casters 1
6 is disposed, and the moving table 1 is provided.
7, the connecting pipe 14 b is held along the moving table 17, the one end serving as the distal end of the connecting pipe 14 b is bent upward, and the transport pipe 1 is bent downward. 1a, is rotatably connected in the horizontal direction by a rotary joint 15, and the other end, which is the base end of the connection pipe 14b, is bent upward to rotate to the distal end of the connection pipe 14a. It is connected rotatably in the horizontal direction by the joint 15,
The connection pipe 14 b is made to follow the displacement of the boom 4.

Reference numeral 19 denotes a connecting pipe holding member, and reference numeral 20 denotes a counterweight of the arm 13.

When the boom 4 of the distributor body 2 is directed forward, the rear end of the upper swing body 3 and the gantry 1
1, the connection pipes 14a and 14b are bent at an appropriate angle as shown by the solid line in FIG.

When the boom 4 is turned from the above state via the upper turning body 3, the base end 1a of the transport pipe 1 is horizontally moved from the position shown by the solid line in FIG. 2 to a position shown by a two-dot chain line, for example. Is displaced. In this case, the base end 1 of the transport pipe 1
The position a is separated from the gantry 11, but the arm 13 holding the connection pipe 14a can be rotated in the horizontal direction about the rotation support shaft 12, and the connection pipe 14b
Is movable freely, and the connection pipes 14a and 14b that have been bent are displaced so as to be extended in the longitudinal direction. At this time, since the load of the arm 13 is received by the rail 10 on the upper surface of the gantry 11 via the liner 18 attached to the lower surface of the intermediate portion, the rotation of the arm 13 is performed stably.

On the other hand, even when the arm 4 turns in the opposite direction as shown by the one-dot chain line, the connecting pipes 14a and 14b are displaced following the turning displacement of the boom 4, as in the above case.

As described above, by employing the connecting piping device 9, the connection between the base end 1 a of the transport pipe 1 and the distal end 8 a of the supply pipe 8 of the concrete pump 7 accompanying the turning operation of the boom 4 of the distributor body 2 is performed. Can be absorbed by the expansion and bending displacement of the connection pipes 14a and 14b themselves without using a rubber hose and a hoist or changing the setup of the supply pipe 8. Therefore, the boom 4 can be freely swung, so that the casting operation can be rationalized and the running cost can be reduced. In this connection, although it depends on the length of the arm 13 and the length of the moving table 17, the base end 1a of the transport pipe 1 in FIG.
As shown by the two-dot chain line and the one-dot chain line, the turning angle of the boom 4 can be set without difficulty up to about 180 °.

In the above-described embodiment, the liner 18 is attached to the lower surface of the arm 13 so as to be in contact with the upper surface of the rail 10 in order to stably rotate while supporting the load of the arm 13. Although a case has been shown, a rolling element such as a wheel may be attached instead of the liner 18, and it is a matter of course that various changes can be made without departing from the gist of the present invention.

[0020]

As described above, according to the connection piping device of the crawler type distributor of the present invention, the following excellent effects are exhibited. (1) The concrete discharged from the concrete pump into the supply pipe is placed at the rear position of the distributor main body in the crawler type distributor which is to be poured through the upper revolving structure of the distributor main body and the transport pipe along the boom. , Set up a stand,
At the center of the upper surface of the gantry, the base end of the arm whose tip is extended horizontally is supported rotatably in the horizontal direction, and the connection pipe is held on the arm,
Further, a moving table is arranged between the distributor main body and the gantry, the connecting pipe is held on the moving table, and the tip of the connecting pipe on the moving table is connected to the base of the transport pipe of the distributor main body. At the end, the base end of the connecting pipe on the moving table is connected to the distal end of the connecting pipe on the arm so as to be rotatable in the horizontal direction, respectively. The base end is connected to the tip of the supply pipe at the position above the center of rotation of the arm so as to be freely rotatable in the horizontal direction. The connection piping can be displaced without using or changing the piping, and the displacement between the transport pipe and the supply pipe of the concrete pump can be absorbed. Can be improved, It is possible to achieve the rationalization of Nkurito hitting 設作 industry. (2) Running costs can be reduced because expensive rubber hoses for connection that need to be replaced frequently are not used. (3) A circular rail is provided on the upper surface of the gantry, and a liner or a rolling element to be engaged with the rail is attached to an intermediate portion of the arm, so that the arm can be rotated and displaced stably. Can be done.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an embodiment of a crawler-type distributor connecting piping device of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a schematic diagram showing an example of a crawler type distributor.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Transport pipe 1a Base end part 2 Distributor main body 3 Upper revolving unit 4 Boom 7 Concrete pump 8 Supply pipe 8a Tip part 10 Rail 11 Mount 13 Arm 14a, 14b Connection pipe 15 Rotary joint 17 Moving table 18 Liner

Claims (2)

[Claims] 1. A crawler-type distributor in which concrete discharged into a supply pipe from a concrete pump is cast through a revolving superstructure provided on the distributor body and a transport pipe along a boom. At the position, a gantry is installed, and at the center position of the upper surface of the gantry, the base end of the arm whose tip is extended horizontally is supported rotatably in the horizontal direction, and on the arm , A connecting pipe is held, and a moving table is disposed between the distributor main body and the gantry, the connecting pipe is held on the moving table, and a tip of the connecting pipe on the moving table is provided. To the base end of the transport pipe of the distributor body, and the base end of the connection pipe on the moving table to the tip of the connection pipe on the arm,
Each of them is connected rotatably in the horizontal direction, and the base end of the connection pipe on the arm is connected to the tip of the supply pipe at the position above the center of rotation of the arm so as to be rotatable in the horizontal direction. A piping device for connecting a crawler-type distributor, wherein the piping device has a connected structure. 2. A piping device for connecting a crawler-type distributor according to claim 1, wherein a circular rail is provided on the upper surface of the gantry, and a liner or a rolling element to be engaged with the upper surface of the rail is attached to an intermediate portion of the arm. .