JP3148190U - Concrete placement jig - Google Patents

Abstract

[Problem] To provide a concrete placement jig capable of placing concrete using existing heavy machinery and further increasing the amount of placement at one time. A concrete placing jig to be attached to a bucket of a backhoe, wherein a connecting member 2 is formed between a cylindrical main body 1 having upper and lower ends opened, and a bucket attached to a lower edge of the main body. The opening / closing device 3 is provided so as to expose or shield the opening at the upper end of the main body. The opening / closing device 3 includes a lid body 31 and a hydraulic jack 32 connected to a reserve hydraulic pressure of the backhoe. [Selection] Figure 1

Description

  The present invention relates to a concrete placing jig (attachment) attached to a bucket portion of a backhoe.

  For concrete placement on site, a concrete placement device that combines pumps and piping equipment with concrete discharged from the mixer truck is used to transport concrete to a predetermined placement position. It has been broken.

  However, if a dedicated placement device is used, the burden of construction costs is large. Therefore, it is desired to use existing heavy machinery to place concrete without using the dedicated placement device.

As a technique that satisfies the above-mentioned hope, there is a concrete caster for backhoe as described in Patent Document 1.
The concrete placement device described in Patent Document 1 includes a concrete hopper, a main body outer frame, a cylindrical rubber hose, a hydraulic piston shaft, a suspension wire, and the like, and a bucket portion of a backhoe through the suspension wire. By attaching to the tip of the steel, concrete can be placed using the existing backhoe.
JP-A-10-266571

  However, in the invention described in Patent Document 1, only a separate placing device is attached to the tip of the backhoe, and the amount of concrete input is limited to the capacity of the placing device.

  In addition, depending on the type of backhoe, the mounting surface of the bucket portion with the driving device is not necessarily a planar shape, which may cause a lack of stability of the driving device after mounting. For this reason, there is a case where the mounting position of the driving device is shifted while the backhoe is operated, and a sense shift may occur between the actual driving position and the driving position predicted by the operator.

A first device of the present application made to solve the above problems is a concrete placing jig to be attached to a bucket of a backhoe, a cylindrical main body having upper and lower ends opened, and a lower edge of the main body A jig for placing concrete, which has at least a connecting tool attached to the bucket and an opening / closing device provided so as to expose or shield the opening at the upper end of the main body. .
Further, according to a second device of the present application, the main body is provided with a taper so that an opening area becomes smaller from the lower end toward the upper end, and the concrete placement for backhoe according to the first device of the present application is characterized in that A jig is provided.

According to the present invention, at least one of the following effects can be obtained.
(1) Since a concrete placement operation can be performed using an existing backhoe, a dedicated placement device is not required.
(2) Since a reserve hydraulic device provided in advance on the backhoe is used, it is not necessary to prepare a separate hydraulic device.
(3) The concrete can be placed with fewer workers than before, which contributes to the reduction of construction period and cost.
(4) The backhoe bucket part can also be used as the concrete input part, and the total capacity of the capacity of the concrete placing jig body of the present invention and the capacity of the backhoe bucket part is calculated as the amount of concrete input. (The amount of placement), and the amount of placement per process can be increased.
(5) By tapering the main body, it is easier to specify the concrete placement position. Furthermore, the concrete pouring fluidity is improved.

  Hereinafter, the configuration and method of use of the concrete placing jig of the present invention will be described with reference to the drawings.

<1> Overall Configuration FIG. 1 is a front view showing a state in which the concrete placing jig of the present invention is attached to a bucket of a backhoe.
The concrete placement jig A of the present invention includes a connecting body 2 having a cylindrical main body 1 with upper and lower ends opened, a bucket B1 attached to a lower edge of the main body 1, and an upper end of the main body 1. And an opening / closing device 3 provided so as to expose or shield the opening.

<2> Body 1
The main body 1 is a cylindrical member whose upper and lower ends are open. The material of the main body is not particularly limited as long as it has a strength that can withstand the weight of the concrete when it is placed. Therefore, a rigid member such as iron or steel can be used, and a flexible member such as rubber can be used when a certain amount of weight reduction is required.
In addition, when the main body is tapered so that the opening area decreases from the lower end to the upper end, the concrete placement position becomes easier and the fluidity of the concrete in the main body is improved. Better.

<3> Connector 2
The connection tool 2 is a member for connecting the main body 1 and the bucket B1 while absorbing the area difference between the opening at the lower end of the main body 1 and the opening of the bucket B1.
The connector 2 is configured such that the outer shape is substantially the same size as the outer periphery of the upper edge of the bucket B1, and a hole having an opening area substantially the same as the lower edge of the main body 1, that is, the lower end opening portion is provided. It is.
As a connection method relating to the connection between the connector 2 and the main body 1 and the connection between the connector 2 and the bucket B1, a well-known method such as bolting or welding can be employed.

<4> Opening / closing device 3
The opening / closing device 3 is a device provided so as to expose or shield the opening at the upper end of the main body 1.
In this embodiment, the opening / closing device 3 includes two lids 31 provided to expose or shield the opening at the upper end of the main body 1 and two hydraulic jacks 32 for operating the lid. Consists of.
The two lid bodies 31 are configured to shield the opening portions by contacting each other in the vicinity of the opening portion at the upper end.
The hydraulic jack 32 has one end attached to the lid body 31 and the other end attached to the main body 1 and is configured to operate by being connected to the preliminary hydraulic pressure of the backhoe B. The lid 31 is operated by extending and contracting the hydraulic jack 32 by the preliminary hydraulic pressure, and thereby the opening portion at the upper end of the main body 1 is exposed or shielded.

<5> Usage method Next, the usage method of the concrete placement jig of the present invention will be described.
FIG. 3 is a schematic view showing how to use the concrete placing jig of the present invention.
First, as a preliminary stage, the concrete placing jig A of the present invention is installed in the bucket with the open surface of the bucket B1 of the backhoe B facing upward. (Fig. 3 (a))

[Placement procedure]
The upper end opening of the main body 1 is exposed by opening the lid 31 by the operation of the operator of the backhoe B, and concrete is poured from the opening. After the concrete is put in, the lid 31 is closed by the hydraulic jack 32.
After the backhoe B is moved to the vicinity of a predetermined placement position, the bucket B1 is reversed while the lid 31 is closed so that the upper end opening of the main body 1 is positioned below.
After finely adjusting the position of the bucket B1, the lid 31 is opened and the concrete put into the bucket B1 is placed at a predetermined placement position. (Fig. 3 (b))
After the concrete is placed, the lid 31 is closed, the bucket is inverted again, and the backhoe B is returned to the original position until the concrete is put in.

By repeating the above procedure, it is possible to perform the placing work easily and with low construction cost without using a dedicated concrete placing apparatus and without attaching an extension hose or the like to the concrete mixer truck or the like.
Further, since the backhoe B has higher mobility than a general dedicated placement device, it is less affected by the field environment of the placement site, and therefore an effect such as shortening the construction period can be expected.

The schematic front view of the jig | tool for concrete placement of this invention. The schematic side view of the jig | tool for concrete placement of this invention. The figure which shows the usage method of the jig | tool for concrete placement of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main body 2 Connection tool 3 Opening and closing device 31 Cover body 32 Hydraulic jack A Concrete placing jig B Backhoe B1 Bucket

Claims (2)

A concrete placing jig to be attached to a backhoe bucket,
A cylindrical body with upper and lower ends opened;
A connection to the bucket, attached to the lower edge of the body;
An opening and closing device provided to expose or shield the opening at the upper end of the main body;
A concrete placing jig having at least 2. The concrete placing jig according to claim 1, wherein the main body has a taper so that an opening area decreases from the lower end toward the upper end.

Images