JP2003094425A - Mixer drum cooling device for mixer truck - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mixer drum cooling device for a mixer truck capable of suppressing the temperature rise in a mixer drum even during transport in the daytime to prevent the qualitative deterioration caused by the temperature rise. SOLUTION: In the mixer truck wherein the mixer drum 2 is mounted on a chassis so as to be freely rotatable in a circumferential direction, a cover 20 for covering at least the upper part of the mixer drum 2 is provided on the chassis 1 and a cooling water sprinkling means 30 for sprinkling cooling water over the outer peripheral surface of the mixer drum 2 is also provided on the chassis 1. The cover member 20 is formed by providing a sheet material 25 to a frame material 21 while the cooling water sprinkling means 30 utilizes a part of the frame material 21 as a water sprinkling pipe 22b and a cooling water supply device is allowed to communicate with the water sprinkling pipe 22b and a plurality of water sprinkling nozzles 22b are provided to the water sprinkling pipe 22b. The cooling water supplied to the water sprinkling pipe 22b from the cooling water supply device is sprinkled over the outer peripheral surface of the mixer drum 2 from the water sprinkling nozzles.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixer drum cooling device for cooling a mixer drum in a mixer truck carrying fresh concrete.

[0002]

2. Description of the Related Art Conventionally, there has been provided a mixer wheel in which a mixer drum is mounted on a chassis so as to be rotatable in a circumferential direction, and solidification is suppressed by kneading raw concrete contained in the mixer drum by rotation of the mixer drum. I was carrying it to my destination.

[0003]

However, in the above-mentioned conventional mixer truck, although fresh concrete is kneaded and transported to the destination, it is transported while receiving direct sunlight on the mixer drum during the day such as summer. Therefore, there is a problem in that the outer peripheral surface of the mixer drum is heated by the direct sunlight and the inside of the mixer drum is also heated through the outer peripheral surface, and if the transportation time becomes long, the concrete temperature is solidified due to an increase in the internal temperature and quality deterioration occurs. It was

The present invention has been made in view of the above problems, and it is possible to suppress the temperature rise inside the mixer drum even during transportation during the day and prevent the deterioration of quality such as solidification of fresh concrete due to the temperature rise. An object of the present invention is to provide a mixer drum cooling device for a mixer vehicle that can be used.

[0005]

According to a first aspect of the present invention, there is provided a mixer drum cooling device for a mixer vehicle in which a mixer drum is mounted on a chassis so as to be rotatable in a circumferential direction. A cover member that covers at least the upper portion of the mixer drum is provided, and cooling water sprinkling means that sprinkles cooling water is provided on the outer peripheral surface of the mixer drum.

In the mixer drum cooling device for a mixer truck of the invention according to claim 2, the cover member is formed by stretching a sheet material on a frame material provided on a chassis so as to surround the outer periphery of the mixer drum. The cooling water sprinkling means uses a part of the frame material arranged in the front-rear direction as a water sprinkling pipe, and the sprinkling pipe is connected to a cooling water supply device for supplying cooling water to the water sprinkling pipe. At the same time, the sprinkling pipe is equipped with multiple sprinkling nozzles.
The cooling water is supplied from the cooling water supply device to the sprinkling pipe from the sprinkling nozzle to the outer peripheral surface of the mixer drum.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

1 and 2 show the overall structure of a mixer car.

A mixer drum 2 is mounted on the chassis 1 so as to be rotatable in the circumferential direction. The mixer drum 2 is configured to be rotated in the forward and reverse directions by a drive device (not shown) provided on the chassis 1, and a spiral blade (not shown) provided inside by the rotation of the mixer drum 2.
With the action of, raw concrete is added, kneaded, and discharged.

At the rear end of the mixer drum 2, there is arranged a hopper 3 for charging fresh concrete into the mixer drum 2. The lower end of the hopper 3 is a charging cylinder (not shown) attached to the rear end of the blade. Have been serialized.

A pair of left and right scoops 4 are provided in a V shape below the hopper 3, and the scoops 4 receive fresh concrete discharged from the rear end of the blades by the rotation of the mixer drum 2. Further, below the scoop 4, a chute 5 for discharging the raw concrete received by the scoop 4 is arranged.

The mixer wheel thus constructed is provided with a mixer drum cooling device 10.

The mixer drum cooling device 10 comprises a cover member 20 for covering the outer peripheral surface of the mixer drum 2 and cooling water sprinkling means 30 for sprinkling cooling water on the outer peripheral surface of the mixer drum 2.

The cover member 20 is a frame member 21 erected on the chassis 1 so as to surround the outer periphery of the mixer drum 2.
The sheet material 25 is stretched over the upper surface of the mixer drum 2.
The outer peripheral surface is covered with a predetermined distance.

Specifically, the frame member 21 is composed of an upper frame member 22 serving as a portion for stretching the sheet member 25, and a support frame member 23 supporting the upper frame member 22.

The upper frame 22 is composed of a plurality of auxiliary pipes 22.
a is arranged in the front-rear direction at a predetermined interval in the left-right direction corresponding to the upper shape of the mixer drum 2, and a sprinkling pipe 22b is arranged in the front-rear direction over the tops of the auxiliary pipes 22a.

The support frame 23 has a plurality of vertical pipes 23a which are vertically arranged at predetermined intervals on the chassis 1 in correspondence with the side shape of the mixer drum 2 and at the upper ends of the vertical pipes 23a. A horizontal pipe 23b is connected across the horizontal pipe 23b, and both ends of the auxiliary pipe 22a of the upper frame 22 are connected to and supported by the horizontal pipe 23b.

The sheet material 25 is divided or divided into individual sections on the upper frame 22, and one sheet is stretched. The outer surface of the sheet material 25 is formed in a silver color excellent in the characteristic of reflecting the sunlight. There is.

The cooling water sprinkling means 30 includes the water sprinkling pipe 22b, a cooling water supply device communicating with the water sprinkling pipe 22b, and a plurality of water sprinkling holes formed in front and rear of the water sprinkling pipe 22b at predetermined intervals. It is composed of a water spray nozzle (not shown).

The cooling water supply device is composed of a tank 31 provided on the chassis 1 for storing the cooling water, a pump (not shown) for supplying the cooling water of the tank 31 to the sprinkling pipe 22b, and a supply pipe. By driving, the cooling water of the tank 31 is supplied to the water spray pipe 22b through the supply pipe to spray water from the water spray nozzle to the outer peripheral surface of the mixer drum. That is, the sprinkler pipe 22b is connected to the cover member 20.
It also serves as each component of the cooling water sprinkling means 30.

Since the mixer drum cooling device 10 is provided in the mixer car as described above, the cover member formed of silver which is excellent in the reflection ability to reflect the direct sunlight on the outer peripheral surface of the mixer drum 2 during the transportation of the fresh concrete. By blocking with the outer surface of 20, the temperature rise inside the mixer drum 2 due to direct sunlight can be suppressed.

Further, the tank 3 is provided by the cooling water sprinkling means 30.
By sprinkling the cooling water in 1 through the sprinkling pipe 22b from the sprinkling nozzle to the outer peripheral surface of the mixer drum 2, the outer peripheral surface of the mixer drum can be cooled well, and the temperature rise inside the mixer drum 2 can be further suppressed. .

In other words, due to the interaction between the cover member 20 and the cooling water sprinkling means 30, the temperature rise inside the mixer drum 2 during the transportation of the fresh concrete can be appropriately suppressed. Therefore, it is possible to prevent quality deterioration such as solidification of the fresh concrete that occurs due to the temperature rise inside the mixer drum 2, and it is possible to transport the fresh concrete to the destination in good quality.

[0024]

As described above, according to the mixer drum cooling device for a mixer vehicle of the present invention, a cover member that covers at least the upper portion of the mixer drum is stretched on the chassis and cooling water is provided on the outer peripheral surface of the mixer drum. By providing the cooling water sprinkling means for sprinkling water, it is possible to prevent the direct sunlight from irradiating the outer peripheral surface of the mixer drum with the cover member during transportation of the fresh concrete, thereby suppressing the temperature rise inside the mixer drum. It is possible to further suppress the temperature rise inside the mixer drum by spraying the cooling water from the water spray nozzle to the outer peripheral surface of the mixer drum by the water sprinkling means for cooling. As a result, it is possible to properly suppress the temperature rise inside the mixer drum during the transportation of the fresh concrete and prevent the quality deterioration such as the solidification of the fresh concrete caused by the temperature rise inside the fresh concrete, and to keep the raw concrete in a good condition. Can be transported to the destination.

[Brief description of drawings]

FIG. 1 is a side view showing a configuration of a mixer drum cooling device of a mixer vehicle.

FIG. 2 is a plan view showing a configuration of a mixer drum cooling device of a mixer car.

[Explanation of symbols]

1 chassis 2 mixer drums 10 Mixer drum cooling device 20 cover member 21 frame material 22b Sprinkling pipe 25 sheet materials 30 Cooling water sprinkling means

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Keiichi Yoshida             2 Sakaemachi, Sano City, Tochigi Prefecture Shinmeiwa Industrial Co., Ltd.             Company specially equipped vehicle division F-term (reference) 3L044 AA04 BA02 CA01 CA18 DB01                       KA04                 4G056 AA07 CA04 CD53 CD64

Claims (2)

[Claims] 1. A mixer car in which a mixer drum is rotatably mounted in a circumferential direction on a chassis, a cover member for covering at least an upper part of the mixer drum is provided on the chassis, and a cooling member is provided on an outer peripheral surface of the mixer drum. A mixer drum cooling device for a mixer vehicle, comprising cooling water sprinkling means for sprinkling water. 2. The cover member is formed by stretching a sheet material on a frame material provided on a chassis so as to surround the outer periphery of the mixer drum, while the cooling water sprinkling means is arranged in the front-rear direction. A part of the frame material is used as a sprinkling pipe, and this sprinkling pipe is connected to a cooling water supply device that supplies cooling water to the sprinkling pipe.
A mixer drum of a mixer car, wherein the water spray pipe is provided with a plurality of water spray nozzles, and the cooling water supplied from the cooling water supply device to the water spray pipe is sprayed from the water spray nozzle to the outer peripheral surface of the mixer drum. Cooling system.