JPS6332848Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a concrete pump truck used for pumping fresh concrete into a pipe to a required placement site at a concrete placement site during construction work.

As is well known, a concrete pump truck has pipes for transporting fresh concrete attached to a boom that can be bent up and down, and when using this, it is necessary to connect the pipes by simply raising the boom upward. There are two main types: boom device type, which does not require concrete pouring, and piping type, which connects multiple pipes one after another at the concrete pouring site. Naturally, depending on the presence or absence of piping work on site, the former has the disadvantage of being more functional, while the latter has poor workability, but on the other hand, the former is inferior, especially when it comes to the length of transportation of ready-mixed concrete, and the latter is inferior. wins. In other words, the latter pipe-type concrete pump truck is useful because it can pump fresh concrete to high places that are impossible with the former.

By the way, in this pipe type concrete pump car, the pipe is stored in a pipe rack provided on the pipe car body, and when pouring concrete, a worker lowers the pipe from the pipe rack and connects it to the concrete pump. However, in the past, the above-mentioned pipe rack was simply installed above the vehicle body, avoiding various equipment on the vehicle body, so that workers had to go up and down the deck of the vehicle body to unload the pipes, which was extremely troublesome. .

The present invention provides a concrete pump vehicle equipped with a concrete pump and a pipe rack provided above the vehicle body for storing a pipe connected to the concrete pump, and a hook for hooking the pipe to the side of the pipe rack. A plurality of endless chains are wound around a pair of upper and lower chain wheels, and are rotatably provided at appropriate intervals in the longitudinal direction of the vehicle body, and the pipe racks are attached to the pipe rack by tilting the pipe racks up and down with the pivot as a fulcrum. The above-mentioned conventional problems have been solved by adding a tilting mechanism that moves the end of the endless chain up and down.At the start of concrete pouring, the endless chain is rotated and the pipe is pulled to its hook. When hanging and lowering the pipe, or when storing the pipe on a pipe rack, the pipe can be stored by placing the pipe on the hook and rotating the endless chain, allowing the worker to store the pipe without climbing up or down the deck of the vehicle body. The purpose of the present invention is to provide a highly functional concrete pump truck that can significantly reduce the burden on workers by being able to unload and load materials.

The present invention will be explained in detail below based on the drawings.
The figure shows one embodiment of the present invention, in which a concrete pump 3 is attached to the body 2 of a concrete pump truck 1.
and related equipment 3a are mounted thereon, and a pair of left and right struts 4a, 4b and struts 4c, 4d are erected at predetermined positions in front and rear of the vehicle body 2 (in Fig. 1, struts 4b ，
4d overlaps the pillars 4a and 4c. ). A pipe rack 5 is attached to the upper end of the pillars 4b, 4d on one side (left side in FIG. 2) of these pillars 4a, 4b, 4c, 4d by means of a pin pivot 6 so as to be tiltable in the vehicle width direction. The columns 4a, 4c on the other side (the right side in FIG. 2) are formed to be shorter by a required length than the columns 4b, 4d on the one side, and the other side (the right side in FIG. 2) of the pipe rack 5 is inclined downward. It is configured to support this in the state in which it is used.

The pipe rack 5 is made up of a plurality of aggregates 5a arranged vertically and horizontally, and a plurality of frame members 5b of a required length are erected at appropriate intervals around the side edges of the aggregates. pillar 4a,
4c, the cylinder body is connected to the supports 4a, 4c.
In addition, a pair of operating cylinders (tilting mechanisms) 7a and 7b are attached to the piston rods connected to the pipe rack 5, respectively (in FIG. 2, the operating cylinder 7a on the front side of the vehicle body 2 overlaps with the operating cylinder 7b). ing). These working cylinders 7a, 7b are interlocked with each other, while each working cylinder 7a, 7b is extended to move the pipe rack 5.
Push up the other side, and also each operating cylinder 7a, 7
When the pipe racks 5 are contracted and the pipe racks 5 are being towed, the pipe racks 5 are configured to be tilted vertically at appropriate angles.

Further, a pair of brackets 8a, 8c are provided at predetermined positions above each of the pillars 4a, 4c on the other side, and a rotating shaft 9 is attached to these brackets 8a, 8c.
is installed so that it can rotate freely. A chain wheel 10a and a chain wheel 10c are attached to the front and rear parts of the rotary shaft 9, respectively, and below the chain wheels 10a and 10c are chain wheels 11 that are paired with each other.
a, 11c are provided. The front lower chain wheel 11a is rotatably attached to a frame 12 provided on the vehicle body 2, and the rear lower chain wheel 11a can be rotated forward and backward by a drive device 13 such as a hydraulic motor provided on the vehicle body 2. It is configured so that it can be rotated. Further, the pair of upper and lower front chain wheels 10a, 11
Endless chains 16a, 16c equipped with a plurality of hooks 15 for hooking pipes 14 for transporting fresh concrete are wound around the rear chain wheels 10c, 11c, respectively. Rotation of the wheel 11c causes it to rotate in the forward or reverse direction.

In addition, the vicinity of the chain wheels 10a, 10c of the pipe rack 5 is located in the vicinity of the chain wheels 10a, 10c with respect to the vertical slope of the pipe rack 5.
The hooks 15 are notched as shown in FIG. 4 so that they do not come into contact with each other, and the upper ends of the hooks 15 are configured to protrude from the upper surface of the pipe rack 5 at an appropriate height.

A frame member (holding means) 5b on the other side (right side in FIG. 2) of the pipe rack 5 is detachably attached. That is, as shown in FIG. 5, a rod-shaped frame member 5b is inserted into a pipe-shaped fixing portion 17 provided almost vertically on the side edge of the pipe rack 5 so that its upper end does not protrude beyond the top surface of the pipe rack 5. ing. Here, the frame member 5b may be configured to be integrally tilted outward by a hinge using the side edge portion as a fulcrum.

Next, the operation of the present invention will be explained. 1 and 2 show the running state of the concrete pump truck 1 of the present invention, in which a pipe 14 for transporting fresh concrete is loaded onto a horizontal pipe rack 5. When this concrete pump truck 1 arrives at the concrete pouring site and is parked at the required position, the worker first moves to the pipe rack 5.
When the frame member 5b on the side edge of the other side is removed and the respective actuating cylinders 7a, 7b are contracted, the other side of the pipe rack 5 is tilted downward, and the pipe rack 5 is
The upper pipe 14 rolls in the same direction. Next, when the drive device 13 is actuated to rotate the chain wheel 11c in the clockwise direction (normal rotation) in FIG. 3, the endless chains 16a and 16c also rotate in the same direction, and the pipe 14 on the pipe rack 5 becomes 15 and lowered below the vehicle body 2. A worker on the ground receives the pipe 14 and sequentially connects it to the discharge side of the concrete pump 3. After the connection of the pipes 14 is completed, fresh concrete is received from a truck mixer or the like into the hopper 3b of the concrete pump 3, and is pumped into the pipe to a required pouring location. On the other hand, when the concrete hammering work is completed and the pipe 14 is to be put away, the above procedure is reversed. In this case, it goes without saying that the endless chains 16a, 16c are rotated (reversely) in the counterclockwise direction in FIG. 3. Further, after the pipe 14 is completely stored in the pipe rack 5, the frame member (holding means) 5b on the other side is inserted into the fixing part 17 to prevent the pipe 14 from falling from the pipe rack 5. Then, the operating cylinders 7a and 7b are slightly contracted to bring the pipe rack 5 into a horizontal state.

By the way, in the above, chain wheel 1
1c was rotated by the drive device 13,
It is also possible to configure this so that it can be rotated manually. In addition, each pillar 4a, 4b, 4c, 4d
The number of operating cylinders 7a, 7b and endless chains 16a, 16c are not limited to those shown in the figures.

As explained above, the concrete pump truck according to the present invention is equipped with a concrete pump,
The concrete pump truck is provided with a pipe rack above the vehicle body for storing pipes connected to the concrete pump, and a plurality of endless chains each having hooks for hooking the pipes are arranged on the side of the pipe rack in pairs, upper and lower. The pipe rack is wound around a chain wheel and is rotatably provided at appropriate intervals in the longitudinal direction of the vehicle body, and the end of the pipe rack on the endless chain side is attached to the pipe rack by tilting the pipe rack up and down about a pivot as a fulcrum. The structure is equipped with a tilting mechanism that moves the pipe rack up and down, and by tilting the pipe rack up and down and rotating the endless chain in the forward or reverse direction, the pipe can be hooked onto a hook and taken down from the pipe rack, or removed from the pipe rack. This allows workers to unload pipes while on the ground without having to climb up and down the deck of the vehicle, significantly reducing the burden on workers and greatly improving the efficiency of concrete pouring. It is possible to provide a concrete pump truck which has the practical advantage of obtaining.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a side view of a concrete pump truck, Fig. 2 is a cross-sectional view taken along the - line in Fig. 1, and Fig. 3 is a front view showing the main parts. Figure 4 is a plan view showing a part of the pipe rack;
FIG. 5 is a side view showing the fixing portion of the pipe rack. 3... Concrete pump, 5... Pipe rack, 5b... Holding means, 7a... Operating cylinder,
7b...Operating cylinder, 10a...Chain wheel, 10c...Chain wheel, 11a...
Chain wheel, 11c...Chain wheel, 15...Hook, 16a...Endless chain, 16c...Endless chain.

Claims (1)

[Scope of utility model registration request] Concrete pump 3 is installed and vehicle body 2
A concrete pump vehicle is provided with a pipe rack 5 above which stores a pipe 14 connected to the concrete pump 3, and a plurality of endless chains are provided on the side of the pipe rack 5 with hooks 15 for hooking the pipe 14. 16
a and 16c are a pair of upper and lower chain wheels 10
a, 10c, 11a, 11c, and are rotatably provided at appropriate intervals in the longitudinal direction of the vehicle body 2. The endless chains 16a, 16 of the pipe rack 5
A concrete pump vehicle characterized by being equipped with tilting mechanisms 7a and 7b for raising and lowering the end on the c side.