JP3153543U - Concrete placing jig and shovel crane type concrete placing apparatus - Google Patents

Abstract

A concrete placement jig and a concrete placement apparatus using the jig are provided. A main body portion 1 having a substantially bucket shape and provided with a concrete inlet 11 at the bottom, and a guide portion having a conical shape communicating with the main body and provided with a concrete placement port 21 at the top. 2 and the opening / closing device 3 that opens and closes the placing port constitute a concrete placing jig A. A concrete placing device is configured by attaching the jig to the tip of a boom B of a heavy machine such as an excavator crane. [Selection] Figure 1

Description

  The present invention relates to a concrete placing jig and an excavator crane type concrete placing apparatus using the jig.

  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 desire, the present applicant has devised a concrete placement jig (attachment) that is attached to the bucket portion of the backhoe described in Patent Document 1. The concrete placing jig includes a cylindrical main body, a connector provided at a lower edge of the main body, and an opening / closing device provided so as to expose or shield an input port at the upper end of the main body. By attaching the jig to an existing backhoe, the backhoe can be used as a concrete placement machine.

Utility Model Registration No. 3148190

However, the invention described in Patent Document 1 still requires improvements for solving the following problems.
(1) Since the insertion port (placement port) is provided so as to be used above the bucket, the concrete is charged in a state where the bucket is rotated inward of the boom (so-called tilt-back state). Need arises. In the tilt back state, since the insertion port is located between the boom and the driver's seat, it is necessary to adjust the position of the mixer truck or the like so that the boom does not interfere during the concrete loading operation.
(2) When putting concrete and placing, it is necessary to replace the top and bottom of the bucket portion, so that the amount of operation of the placing machine per process increases.

  Therefore,

  The first device of the present application, which has been made to solve the above-mentioned problems, is a concrete placing jig attached to the tip of a boom of an excavator crane, which has a substantially bucket shape and is provided with a concrete inlet at the bottom. And a guide portion having a conical shape communicating with the main body and provided with a concrete placement opening at the top, and an opening and closing device for opening and closing the placement opening. The gist is a jig.

  The second device of the present application is characterized in that a pillow portion is provided on the outer surface of the jig.

  A third device of the present application is an excavator crane type concrete placing device provided with the concrete placing jig according to the first or second device at the tip of a boom, wherein the jig is a predetermined piece. An excavator crane type concrete placing device characterized by comprising a control means for unlocking the crane function when tilted back to a position and a locking means exposed from the boom. .

According to the present invention, at least one of the following effects can be obtained.
(1) Since a separate inlet is provided at the bottom of the main body, it is possible to perform the concrete charging operation without entering the tilt back state.
(2) Since the pillow part provided on the outer surface is grounded and supports the jig body when the concrete is put in, the stability during the concrete putting work is improved.
(3) The crane function is unlocked only when the driving jig is tilted back to a predetermined position, and the locking means for the crane is exposed, improving safety when switching to the crane function. To do.

The figure which shows the 1st Example of the jig for placement of this invention device The figure which shows the state of the placing jig when putting concrete The figure which shows the state of the placement jig when placing concrete

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a view showing a first embodiment of a placing jig according to the present invention.
The placing jig A of the present invention is a jig that is attached to the tip of a boom B of a heavy machine such as an excavator crane, and includes a main body portion 1, a guide portion 2, and an opening / closing device 3.

The main body 1 is a member having a substantially bucket shape, and is provided with a concrete inlet 11 formed by opening the bottom of the main body 1.
The main body 1 can be manufactured at a lower cost and in a shorter period of time than when it is newly manufactured by using an existing bucket or the like provided with a mechanism for attaching to the boom in advance.

  The guide part 2 is a member that communicates with the input port of the main body, and has a conical shape such as a polygonal shape or a circular shape, and is a member that is connected to the main body portion 1. A concrete placing port 21 is provided at the top of the cone shape.

The inclination angle constituting the cone shape of the guide portion 2 is formed more gently than the inclination angle on the opposite side of the boom in order to avoid interference between the jig A and the boom B as much as possible at the time of tilt back. However, it is desirable to arrange the opening position of the placement port 21 at a position shifted in the opposite direction on the boom side.
Furthermore, if the placing port 21 is formed so as to face away from the boom B at the time of tilt back, the interference between the placing port 21 and the boom B can be further avoided.

  The opening / closing device 3 is a member that releases or shields the placement opening 21, and includes a lid member 31 that closes the placement opening 21 and an operating mechanism 32 that operates the lid member. As the operation mechanism 32, a hydraulic mechanism or the like originally provided in the shovel crane can be used, and can be configured to be operated by an operator.

  The operating device of the opening / closing device 3 may be provided with a controller such as a remote controller. When a remote controller is provided in the vicinity of the placing jig, an operator waiting at the placing place can perform the opening and closing work while visually checking the placing position, so even in a place where it is difficult for the operator to see, Accurate placement work is possible.

  In addition, a grounding pillow portion 4 can be provided on the outer surface of the concrete placing jig of the present invention as shown in FIG. The pillow part 4 is provided at a position where it is first grounded to the ground surface when the insertion port 11 is open upward, and the main body part 1 and the guide part 2 are provided when the pillow part 4 is grounded. Is configured not to touch the ground. With this configuration, the entire placing jig A is supported by the pillow part 4, so that the stability at the time of putting concrete is improved.

FIG. 2 is a view showing a state of a placing jig when throwing in concrete.
When putting concrete, the placing jig A is rotated so that the insertion port 11 faces upward. Due to this positional relationship, it is possible to easily input concrete from the mixer hopper or the like to the input port 11.

FIG. 3 is a view showing a state of a placing jig when placing concrete.
At the time of placing concrete, the placing jig A is rotated so that the placing port 21 faces downward. At this time, the placement port 21 is closed (shielded) by the lid member.
Then, after positioning the placing port 21 to a predetermined placing position, the opening or closing device 3 is opened (released) by the operator or an operator at the placing site by operating the opening / closing device 3, and the concrete is placed. Set up.

  When the placement is completed in an appropriate amount, the opening / closing device 3 is operated to close the placement port 21 to stop the placement operation. Therefore, even if the concrete remains in the jig, the placing can be finished without rotating the jig body.

As described above, according to the present invention, the concrete placing device can be provided only by replacing the tip of a heavy machine such as an existing shovel crane with the placing jig of the present invention.
Further, the rotation operation of the placing jig during the placing operation can be minimized, which contributes to shortening the construction period.
Further, since the placing jig is supported by the pillow portion, it contributes to the improvement of the stability of the entire jig when the concrete is put into the jig.

Moreover, the shovel crane provided with the placing jig of the present invention at the tip of the boom can further include a locking means for the crane exposed from the boom and a control means for releasing the lock of the crane function.
According to the present embodiment, the crane function is not unlocked unless the placing jig is tilted back to a predetermined position, which contributes to an improvement in work safety.
Further, since the guide portion 2 has a conical shape, interference between the jig A and the boom B can be avoided as much as possible even during tilt back.

DESCRIPTION OF SYMBOLS 1 Main body part 11 Input port 2 Guide part 21 Placing port 3 Opening and closing device 31 Cover member 32 Actuating mechanism 4 Pillow part A Placing jig B Boom

Claims (3)

A concrete placing jig to be attached to the boom tip of an excavator crane,
A main body with a substantially bucket shape and a concrete inlet at the bottom;
Presenting a conical shape communicating with the main body, a guide portion provided with a concrete placement port at the top,
An opening and closing device for opening and closing the placement opening,
Concrete placement jig. The concrete placing jig according to claim 1, wherein a pillow portion is provided on an outer surface of the jig. An excavator crane type concrete placing device provided with the concrete placing jig according to claim 1 or 2 at the tip of a boom, wherein the crane function is locked when the jig is tilted back to a predetermined position. An excavator crane type concrete placing device, characterized by comprising control means for releasing the hook and locking means exposed from the boom.

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