JPH0332681Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a support device for supporting concrete piping mounted on a boom-equipped concrete pump truck, and in particular, the present invention relates to a support device for supporting concrete piping mounted on a boom-equipped concrete pump truck. A concrete pump truck with a concrete pump that supports the pipes by supporting the pipe joints that connect the concrete pipes arranged along the boom, and at the same time aligns the center of rotation of the boom and the pipes and fixes them. This invention relates to a piping support device.

[Conventional technology]

Among concrete pump trucks with a boom, for example, in a concrete pump truck with a three-stage boom, a lower boom is supported on the vehicle body so that it can be raised and lowered, and a distal end of a middle boom is pivoted to the tip of the lower boom so that it can be raised and lowered, The distal end of the upper boom is pivoted to the tip of the middle boom so that it can be raised and lowered freely, and by rotating and extending the boom around the joint shaft of each boom, the working position is set. By rotating the boom around the joint shaft and folding it, the upper, middle, and lower booms are folded into a stored position.

The concrete piping is led from the concrete hopper and placed along the lower boom, middle boom, and upper boom, and is connected with a pipe joint at the joint shaft of the upper boom and the lower boom, and the concrete piping is connected to the boom. When the boom rotates, the concrete piping rotates at the pipe joint and can be displaced along with the boom.

In order to enable the concrete piping to follow the movement of the boom when the boom is raised and lowered, the conventional concrete piping support device has a concrete piping 4 placed along the lower boom 1 as shown in FIGS. 3 and 4. and the concrete piping 5 along the upper boom 2 at the connecting shaft portion 3 of both booms 1 and 2.
The concrete piping 4 is rotatably connected with a pipe joint 6 on the side of the lower boom 1, and the concrete piping 4 located on the side of the lower boom 1 has a clamping device 8 attached to the tip of an arm 7 protruding from one side of the boom 1. Supported through
Similarly, the concrete piping 5 located on the side of the upper boom 2 is supported via a clamp device 10 at the tip of an arm 9 protruding from one side of the boom 2. . In order to align the center of rotation of the section 3, for example, by using the arm 7, another arm 11 is extended and the arm 11 supports the pipe 4 of the pipe joint 6 section. be.

[Problem that the invention attempts to solve]

However, in the conventional concrete pipe support device, the concrete pipes 4 and 5 are supported only by the arms protruding from the boom. In addition, arms were required to support the pipes 4 and 5 themselves, and a large number of arms were used.

This invention eliminates the need for a support arm near the pipe joint, simplifies the area around the boom joint shaft, and at the same time supports the concrete piping while aligning the axis of the pipe joint with the center of rotation of the boom and fixing it. This is what we are trying to do.

[Means for solving problems]

The present invention is a device for supporting concrete piping arranged along the same sides of the upper and lower booms of a concrete pump truck with a boom. Attach a connecting bracket to the pipe joint that connects the concrete pipes along the boom, align the pipe joint with the bracket with the rotation center of the joint shaft of the boom, and attach the support arm to either of the booms. support through,
It is designed to support concrete piping together with pipe joints.

[Effect]

When the tips of the support arms protruding from one of the joined booms are attached to the brackets protruding from the pipe joints, the concrete piping is supported via the pipe joints, and at the same time the axis of the pipe joints is aligned with the upper stage. When the upper boom rotates, the rotation center of the joint shaft of the side boom and the lower boom is aligned, and the concrete piping on the side of the upper boom can rotate and follow the rotation at the pipe joint.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

Figures 1 and 2 show an embodiment of the present invention, and in the case of a concrete pump truck with a three-stage boom, the upper boom 2 and the middle boom, the middle boom and the lower boom, etc. The lower booms 1 are connected to each other so as to be rotatable in the vertical direction at the joint shaft portion 3 which is the center of rotation, and each of the above-mentioned booms 1,
In a support device for concrete piping, the concrete piping 4 and 5 arranged along the same side surface of the concrete piping 4 and 5 are supported by the boom so that they can be expanded and bent together with the boom. As a pipe joint, a pipe joint 12 having a bracket 13 for connection with a support arm protruding from an appropriate location on the outer periphery is used,
A support arm 14 whose tip is connected to the bracket 13 of the pipe fitting 12 is fixed to the side surface of the upper boom 2, and the pipe fitting 12 is attached to the tip of the support arm 14 via the bracket 13. By connecting the ends of the concrete pipes 4 and 5, the concrete pipes 4 and 5 can be supported simultaneously.

If the pipe joint 12 is directly supported by the support arm 14 from the upper boom 2 and the pipe joints 4 and 5 are connected to the concrete pipes 4 and 5, the concrete pipes 4 and 5 are simultaneously supported and the concrete pipes 4 and the rotation center of 5, that is, the pipe joint 12
Since the axis of rotation of the joint shaft portion 3 of the booms 1 and 2 already coincides with each other, the concrete piping 5 can be caused to follow the rotation of the upper boom 2 without any trouble.

The concrete piping support device of the present invention is not limited to the above-mentioned embodiment, and the support arm 14 that supports the pipe joint 12 on the boom may be fixed to the lower boom 1, and other features of the present invention may be used. Of course, various changes may be made without departing from the gist of the invention.

[Effect of idea]

As described above, according to the concrete pipe support device of the present invention, the pipe joint that connects the concrete pipe is fixedly supported on the boom by the support arm, so that when the concrete pipe is connected with the pipe joint, the concrete pipe The piping is supported, and at the same time the center of rotation of the concrete piping and the boom can be aligned, making it possible to eliminate the need for a support arm near the conventional pipe joint, and simplifying the area near the joint shaft of the boom. .

[Brief explanation of the drawing]

Fig. 1 is a plan view of essential parts showing an embodiment of the concrete pipe support device of the present invention, Fig. 2 is a side view of Fig. 1, and Fig. 3 shows a state of pipe support by a conventional concrete pipe support device. The plan view, FIG. 4, is a side view of FIG. 3. 1 is a lower boom, 2 is an upper boom, 3 is a joint shaft, 4 and 5 are concrete pipes, 6 and 12 are pipe joints, 13 is a bracket, and 14 is a support arm.

Claims (1)

[Scope of utility model registration request] In a device that supports concrete piping arranged along the same side of the upper boom and lower boom of a concrete pump vehicle with a boom,
A connecting bracket is attached to the pipe joint that connects the concrete pipes along each boom at the joint shaft of the upper boom and the lower boom, and the pipe joint with the bracket is connected to the joint shaft of the boom. A concrete pipe support device for a concrete pump vehicle, characterized in that the concrete pipe is supported by one of the above booms via a support arm so as to be aligned with the center, and can support the concrete pipe together with a pipe joint.