JPH033715Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Industrial field of application] This invention is used to move close to the site and pour concrete when performing construction work such as civil engineering work and construction work by pouring concrete. This relates to concrete placing equipment used for concrete placement.

[Prior Art] Conventionally, most concrete pouring equipment with a boom has a swivel base mounted on a truck chassis having front wheels and rear wheels, and a boom that can be folded into multiple stages on the swivel base. A concrete transport pipe is attached to the discharge pipe of the concrete pump attached to the rear of the truck palm, and after passing the concrete transport pipe through the swivel platform, it is placed along the boom, and the boom is raised and lowered. A type of concrete pump truck is used in which the tip of the concrete transport pipe extends from the top of the truck palm to the concrete placement site.

[Problems that the invention aims to solve] However, since the conventional concrete pump vehicle mentioned above is mounted on a truck chassis, it is difficult to carry out work on site if the road near the work site is rough or the ground is soft. There is a limit to how far you can go,
The hose that connects to the end of the concrete transport pipe along the boom necessarily needs to be long.
Also, during concrete pouring work, outriggers attached to the truck palm are stretched to stabilize the concrete, but since the outriggers provide overall support,
The foundation needed to be made stronger, and foundation work was required.

The present invention is intended to enable movement even on rough roads and soft ground, and to enable concrete pouring work without foundation work.

[Means for Solving the Problems] The present invention provides a structure in which a mast is erected on a crawler, a concrete pump is mounted on the crawler, a swing frame is attached to the mast so as to be freely swingable, and a swing frame installed on the swing frame is installed on the crawler. The base of a collapsible boom, which is made up of multiple booms connected in a foldable manner, is attached to the platform so that it can be raised and lowered freely, and the concrete transport pipe connected to the discharge pipe of the concrete pump is placed along the mast and swivel base, and then It will be supported along the boom, and a hose will be connected to the tip of the concrete transport pipe at the most advanced position of the boom.

[Function] By driving the crawler, the concrete placing device can travel, and it can reach the construction site even in areas with poor roads that are not fully equipped for running, or in areas with soft ground. This allows you to get closer to the site and eliminates the need to make the hose at the end of the concrete transport pipe longer than necessary.
Furthermore, the crawler can secure a wide ground contact area in its running position, eliminating the need for foundation work for concrete pouring work.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

FIGS. 1 and 2 show an embodiment of the present invention. On a crawler 1 that can run by driving a caterpillar with a drive device (not shown),
While erecting mast 2, concrete hopper 4
A concrete pump 3 is configured to discharge concrete into a discharge pipe 6 by suction and discharge by two concrete transport cylinders that alternately reciprocate the concrete inside, and by switching a switching valve 5.
Equipped with. At the top of the mast 2, a swing frame 7 having a ring gear 8 at the bottom is mounted so as to be able to swing freely, and a pinion 10 connected to a drive device 9 with a reduction gear at the top of the mast 2 is meshed with the link gear 8. By rotating the link gear 10, the link gear 8 is rotated so that the rotating frame 7 can be rotated, and a rotating base 11 and an operation room 12 are installed on the rotating frame 7. The base end of the lower boom 13 is attached to the swivel base 11 so that it can be raised or lowered freely, the base end of the middle boom 14 is attached to the tip of the lower boom 13 so that it can be raised or lowered, and the upper boom 15 is attached to the tip of the middle boom 14. The base end is attached so that it can be raised and lowered freely, and the swing frame 7 and lower boom 1
Cylinder 1 for the lower boom is installed between the base end of 3 and the base end of cylinder 1.
6, a cylinder 17 for the middle boom is located between the tip of the lower boom 13 and the base end of the middle boom 14.
Moreover, cylinders 18 for the upper boom are provided between the middle boom 14 and the upper boom 15, and the booms 13, 14, 15 of each stage are expanded and folded by the telescopic operation of each cylinder 16, 17, 18. It can be so.

The concrete transport pipe 19 connected to the discharge pipe 6 of the concrete pump 3 is guided into the mast 2 from the lower end of the mast 2, and after raising the inside of the mast 2 and further raising the inside of the swivel table 11, the concrete transport pipe 19 is connected to the discharge pipe 6 of the concrete pump 3. As shown in the figure, the connecting shaft between the swivel base 11 and the lower boom 13 is passed along one side of the lower boom 13, and the connecting shaft between the lower boom 13 and the middle boom 14 is passed along the other side of the middle boom 14. Align the middle boom 14 and upper boom 15 in the same way.
A flexible 21 is connected to the tip of the concrete transport pipe 19 with a connecting tool 20 along one side of the upper boom 15 through the connecting shaft portion thereof.

Concrete hopper 4 of concrete pump 3
Fill with fresh concrete from a concrete mixer truck, etc.

When bringing the concrete placing device of the present invention to a concrete placing site, the crawler 1 is driven to move it. Since the crawler 1 can travel without any trouble even in places where the ground near the site is soft or where there are many scattered stones and cannot be driven by a truck, this concrete placing device can be easily moved close to the site. I can do it.
When performing concrete pouring work near the site,
The cylinders 16, 17, 18 are extended and the booms 13, 14, 15 of each stage are raised so that the flexible hose 21 is located above the concrete placement site. When the concrete pump 3 is started in this state, the concrete hopper 4
The concrete inside is pumped through the concrete transport pipe 19, discharged through the hose 21 at the tip, and poured.

At this time, since the crawler 1 is in surface contact with the ground and can touch the ground over a wide range, the surface pressure can be lowered compared to the case of outriggers, and work can be carried out stably without foundation work. can.
Furthermore, since the hose 21 can be brought closer to the site, concrete can be placed without making the hose 21 longer than necessary.

When changing the location of concrete pouring, it is possible to do so by rotating the boom, but when concrete pouring work at a certain site is finished and moving to the next site, it is possible to move easily by driving the crawler 1. It is possible to move from one site to another with just one unit.

Although the embodiments of the concrete pouring device of the present invention have been described above, the present invention is not limited to the above-mentioned embodiments.
A swing frame 7 with a boom is attached to the lift frame so as to be freely swingable, and the swing frame 7 is provided with a hole through which the mast 2 can pass, so that concrete can be poured by climbing the swing frame 7 while attaching the mast 2. It can also be done. In this case, the concrete transport pipe from the concrete pump 3 to the swivel table 11 is taken out of the mast 2 and added to suit the climbing.

According to this embodiment, booms 13, 14, 15
It has the advantage of being able to freely change the height position and expand the working range.

[Effects of the invention] As described above, the concrete pouring device of the present invention allows easy access to areas with rough roads and soft ground, allowing the operator to get closer to the site and placing concrete. In addition to eliminating the need to increase the length of the installation hose, the crawler can reduce the surface pressure, thereby eliminating the need for foundation work for concrete pouring work, and other excellent effects can be achieved.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the concrete casting apparatus of the present invention, and FIG. 2 is a plan view of the boom portion. 1 is a crawler, 2 is a mast, 3 is a concrete pump, 7 is a rotating frame, 12 is an operation room, 13
14 is a lower boom, 14 is a middle boom, 15 is an upper boom, 19 is a concrete transport pipe, and 21 is a flexible hose.

Claims (1)

[Scope of utility model registration request] A folding system in which a mast is erected and a concrete pump is mounted on the crawler, a swing frame is swingably mounted on the mast, and a plurality of booms are foldably connected to a swing base installed on the swing frame. The base of the type boom is attached so that it can be raised and lowered freely, and the concrete transport pipe connected to the discharge pipe of the concrete pump is raised up to the attachment point between the swivel base and the boom, and is placed along each stage of the boom. A concrete placing device characterized by being connected to a hose.