JPH059131Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention is a mixer truck with a pump equipped with a pump unit rotatably mounted on the rear end of the vehicle body and a drum rotatably mounted approximately in the middle. This invention relates to a boom device equipped with concrete transfer piping.

(b) Prior Art As shown in FIGS. 3 and 4, a conventional boom device 05 of a mixer truck with a pump has a boom 03 extended rearward from a support column 02 that is rotatably provided on a pedestal 01. It is located directly above the drum 04.

(c) Problems to be Solved by the Invention Therefore, in order to prevent the boom device 05 from coming into contact with the drum 04, the height H above the ground of the boom device 05 becomes high, which causes the problem of instability during traveling.

Furthermore, if the drum 04 is made smaller to lower its ground clearance, there is a problem that the loading capacity of fresh concrete will be reduced.Furthermore, since the hopper 06 receives ready-mixed concrete from the plant, the boom 03 cannot be positioned above the hopper 06. Therefore, there is a problem that the length of the boom 03 becomes short.

(d) Means for solving the problem The present invention was made to solve the above problem, and includes a pump unit rotatably mounted on the rear end of the vehicle body, and a drum rotatably mounted approximately in the middle. A mixer with a pump, wherein a pedestal is provided at the center of the vehicle body in the vehicle width direction between the drum and the driver's cabin at the front of the vehicle body, and a boom device with a concrete transfer pipe from the pump unit installed along the pedestal is rotatably provided. In the vehicle, the boom device is composed of a support column that is rotatably provided on a frame, a base boom that is provided on the support column so that it can be raised and lowered, and a front side boom that is provided on the base boom so that it can be raised and lowered. When the boom device is stored, the front side of the base boom and the front side boom are arranged on one side of the drum in the vehicle width direction, and the bending part connecting the base side and the front side of the base boom is placed on the drum. It is characterized by being located in

(e) Function After pouring, the boom device is stored.The base boom has a bent part so that the tip side is placed on one side of the drum in the vehicle width direction, and the tip side boom is also placed on one side of the drum in the vehicle width direction. Since it is disposed on one side in the direction, it can be stored without coming into contact with the drum or being located on the hopper.

(f) Embodiment An embodiment of the present invention will be described below based on the drawings. Reference numeral 1 is a pump unit mounted on the rear end of a vehicle body 2 via a bracket 3, and this pump unit 1 pumps ready-mixed concrete. Accept Hotsupa 4
and a pump 5 for pumping the fresh concrete received into the hopper 4. Reference numeral 6 denotes a drum mounted approximately in the center of the vehicle body 2, and a drive device 7 for rotating the drum 6 is provided at the front end of the drum 6.
However, a hopper 8 for guiding fresh concrete to the drum 6 and a chute 9 for guiding the fresh concrete in the drum 6 to the hopper 4 of the pump unit 1 are provided at the rear end.

Between the drum 6 and the driver's cab 10 in front of the vehicle body 2,
A pedestal 11 is provided at the center of the vehicle body 2 in the vehicle width direction, and a concrete transfer pipe 13 from the pump unit 1 is connected to the pedestal 11 via a rotation device 12.
A boom device 14 is provided so as to be able to rotate.

The boom device 14 includes a support column 15 erected on the swing device 12, a base boom 16 whose base end is provided on the support column 15 so that it can be raised and lowered, and a base boom 16 that is attached to the tip of the base boom 16 so that it can be raised and lowered. It is composed of a tip boom 17 which is a tip side boom provided with an end.

The base boom 16 has a bent portion 18 formed approximately in the middle thereof, and this bent portion 18 is located on the right side when looking forward from the rear of the vehicle body 2 at the base side of the base boom 16 when the boom device 14 is stored. folded first
It consists of a bent part 18a and a second bent part 18b that is bent backward from the first bent part 18a on the tip side, and the tip side of the base boom 16 is arranged on the right side of the drum 6 from the base side. The tip side and the base side are parallel to each other.

For this reason, the front boom 17 is also arranged on the right side of the drum 6.

By the way, in the embodiment of the present invention, the front end side of the base boom is arranged on the right side of the drum, but it may be arranged on the left side, and the boom is composed of a base boom and a front boom. However, the same effect can be obtained even if an intermediate boom is provided between the base boom and the tip boom.

Next, the method of using the pump-equipped mixer truck of the present invention will be described. First, the drum 6 is rotated in the forward direction by the drive device 7 to receive fresh concrete from the plant into the drum 6 through the hopper 8.

Next, when arriving at the construction site, the boom device 14 is swung and raised as appropriate to transfer the concrete transfer pipe 1.
Take the tip of No. 3 to the pouring site.

Thereafter, by rotating the drum 6 in the reverse direction and putting the fresh concrete in the drum 6 into the hopper 4 of the pump unit 1 via the chute 8, and operating the pump 5, the ready-mixed concrete in the hopper 4 is transferred to the concrete transfer pipe 13. The concrete will be poured at the concrete pouring site.

After pouring, the boom device 14 is stored. When the boom device 14 is stored, the base boom 16 is disposed on the right side of the drum 6 due to the bending portion 18. Part boom 17
Since it is arranged on the right side of the drum 6, it can be stored without coming into contact with the drum 6 or being located on the hopper 8.

This allows the ground clearance h of the pump-equipped mixer truck to be lowered, and the boom to be longer.

(g) Effects of the invention As described above, the present invention arranges the front side of the base boom and the front side boom on one side of the drum in the vehicle width direction when the boom device is stored, and the base side and the front side of the base boom Since the bending part that connects the sides is located on the drum, the boom device does not come into contact with the drum when it is stored, and it is not located on the hopper, making the drum smaller than before. The ground clearance can be lowered, and the boom can be made longer.

[Brief explanation of the drawing]

Fig. 1 is a front view of a mixer truck with a pump according to the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a front view of a conventional mixer car with a pump, and Fig. 4 is a plan view of Fig. 3. It is. 1 is the pump unit, 2 is the vehicle body, 6 is the drum,
10 is a driver's cab, 11 is a frame, 13 is a concrete transfer pipe, 14 is a boom device, 15 is a support column,
16 is a base boom, and 18 is a bending portion.

Claims (1)

[Scope of utility model registration request] A pump unit is rotatably mounted on the rear end of the vehicle body, and a drum is rotatably mounted approximately in the middle of the vehicle body. A frame is provided at the center of the vehicle body in the vehicle width direction between the drum and the driver's cab at the front of the vehicle body. A pump-equipped mixer truck is provided with a swingable boom device along which a concrete transfer pipe from a pump unit is attached, and the boom device has a support strut pivotably provided on a pedestal, and a support strut that is movable up and down on the support strut. It is composed of a base boom provided on the base boom and a tip side boom provided on the base boom such that it can be raised and lowered.When the boom device is stored, the tip side of the base boom and the tip side boom are placed on one side of the drum in the vehicle width direction. A mixer truck with a pump in which a bent part connecting the base side and the tip side of the base boom is located on the drum.