JP2012228830A - Concrete mixer truck - Google Patents

Abstract

An object of the present invention is to put raw concrete material into a rotating drum, put a predetermined amount of water into the rotating drum at a place where it can go to the site of use, and rotate the rotating drum so that it exceeds the conventional kneading. Providing mixer trucks that can be forcibly kneaded and ready to produce ready-mixed concrete when it reaches the site of use.
A bearing 22 fixed to a central portion of an inner bottom of a rotating drum 11, a tip end portion rotatably attached to the bearing, and a rear end portion projecting outward from an inlet / outlet 12 of the rotating drum, the projecting portion A rotary shaft 24 rotatably attached to a support base 14 fixed to the cargo bed 3 positioned at the rotary shaft, and a rotary shaft drive device for rotating or stopping the rotary shaft in a direction opposite to the rotational direction when the rotary drum is kneaded. And a kneading promoting device 21 comprising a plurality of stirring blades 26 capable of moving a kneading material moving toward the inner bottom surface while being kneaded by rotation of the rotating drum in a direction opposite to the moving direction. A mixer vehicle 1 equipped with
[Selection] Figure 3

Description

  The present invention relates to a mixer truck capable of producing ready-mixed concrete by storing ready-mixed concrete material in a rotating drum and kneading or kneading it during transportation.

Conventionally, a mixer truck is used when a ready-mixed concrete is stored in a rotating drum from a ready-mixed concrete factory and transported to a use site while stirring.
However, when the ready-mixed concrete factory and the use site are relatively close, no problem occurs. However, when the distance is long or traffic congestion occurs, there is a drawback that the quality of the ready-mixed concrete deteriorates or becomes solidified.

Japanese Patent Laid-Open No. 5-208412

  In view of the above-mentioned conventional drawbacks, the present invention puts a raw concrete material into a rotating drum, and puts a predetermined amount of water into the rotating drum at a place where it can go to a use site in advance. By rotating this, forced kneading more than kneading with the rotation of only a conventional rotating drum can be performed, and ready-mixed concrete can be produced when it reaches the use site. An object of the present invention is to provide a mixer vehicle that can prevent problems such as solidification.

The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are for explanation only and do not limit the technical scope of the present invention.

  In order to achieve the above object, the present invention provides a mixer having a rotating drum that can be rotated forward and backward by a drive device in which a spiral blade is fixed to an inner wall surface of a truck bed capable of producing ready-mixed concrete. In a vehicle, a bearing fixed to a central portion of the inner bottom of the rotating drum, a tip end portion is rotatably attached to the bearing, and a rear end portion projects outward from an entrance / exit of the rotating drum and is located at the projecting portion A rotating shaft fixed to the loading platform or a rotating shaft that is rotatably attached to the rotating drum supporting table, and rotating the rotating shaft in a direction opposite to the rotating direction when kneading the rotating drum, or when rotating the rotating drum A support base fixed to the loading platform on the entrance / exit side of the rotary drum, which cannot be rotated, or a rotary shaft driving device or a rotary shaft fixing means attached to the rotary drum support base, A plurality of kneading materials fixed to the inner bottom surface side of the rotating drum of the shaft and moving toward the inner bottom surface while being kneaded by the rotation of the rotating drum can be moved in the direction opposite to the moving direction. A mixer vehicle is composed of a kneading promoting device comprising a stirring blade.

As is clear from the above description, the present invention has the following effects.
(1) According to claim 1, when the ready-mixed concrete material and water are put into the rotating drum and the rotating drum is rotated, the ready-mixed material and water are mixed with the spiral blade fixed to the inner wall surface of the rotating drum. As the material is being stirred, it moves toward the bottom of the rotating drum, and the moving kneaded material is forced to force the ready-mixed concrete material and water efficiently by moving in the opposite direction with a plurality of stirring blades of the kneading accelerator. It is kneaded and can produce ready-mixed concrete efficiently.
In this case, even if the plurality of stirring blades of the kneading promoting device are in a fixed state or rotated in the direction opposite to the rotating direction of the rotating drum, the ready-mixed concrete material and water can be efficiently stirred and kneaded. .
(2) According to the above (1), it is only necessary to provide a kneading promoting device provided with a rotating shaft in which a plurality of stirring blades are fixed in a rotating drum, and the conventional mixer truck can be easily modified and manufactured. .
(3) According to the above (1), it is possible to cut or push back the stirring kneaded product moving while being stirred toward the inner bottom surface of the plurality of stirring blade rotating drums.
Therefore, ready concrete and water can be efficiently and forcibly kneaded by a plurality of stirring blade portions.
(4) In claim 2, the same effects as in the above (1) to (3) can be obtained, and the ready-mixed concrete in the rotating drum can be discharged efficiently.

The side view of the 1st form for carrying out the present invention. The top view of the 1st form for carrying out the present invention. The partially broken sectional view of the 1st form for implementing this invention. Explanatory drawing of the kneading | mixing promotion apparatus of the 1st form for implementing this invention. Explanatory drawing when accommodating the ready-mixed concrete material of the 1st form for implementing this invention. The side view of the 2nd form for carrying out the present invention. The top view of the 2nd form for carrying out the present invention. Explanatory drawing of the kneading | mixing promotion apparatus of the 2nd form for implementing this invention. The side view of the 3rd form for carrying out the present invention. The top view of the 3rd form for carrying out the present invention. Explanatory drawing of the kneading | mixing promotion apparatus of the 3rd form for implementing this invention.

  Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

  In the first embodiment for carrying out the present invention shown in FIGS. 1 to 5, reference numeral 1 denotes a mixer according to the present invention capable of producing ready-mixed concrete before it reaches the use site or producing ready-mixed concrete at the use site. The mixer vehicle 1 includes a truck 2, a hydraulic motor support 4 fixed to the front center of the loading platform 3 of the truck 2, a hydraulic motor 5 attached to the hydraulic motor support 4, Rotating drum support bases 7 and 7 having rollers 6 and 6 on the upper surface fixed to portions near both ends on the rear side of the cargo bed 3, and a central portion of one end are attached to the drive shaft 8 of the hydraulic motor 5, and the other end A rotating drum 11 in which a spiral blade 10 is fixed to an inner wall surface rotatably mounted by a roller ring 9 whose portion closer to the part contacts the rollers 6 and 6 of the rotating drum support bases 7 and 7, and this rotation Drum 11 A hopper 15 attached to a support base 14 fixed to the cargo bed 3 for supplying raw concrete material 13 such as cement, aggregate (sand, gravel, etc.), admixture, etc. into the entrance / exit 12 at the other end; When the ready-mixed concrete discharged from the entrance / exit 12 of the rotary drum 11 is received in the rotary drum 11 and the discharge chute 17 for discharging to the outside and the ready-mixed concrete attached to the front part of the loading platform 3 are produced in the rotary drum 11 A kneading water tank 19 with a meter 18 that is metered and supplied into the drum 11, and a kneading promoting device 21 that efficiently promotes stirring and kneading of the raw concrete material 13 and the water 20 in the rotating drum 11; It consists of

  The kneading promoting device 21 has a bearing 22 fixed to the central portion of the inner bottom of the rotating drum 11, a tip end portion rotatably attached to the bearing 22, and a rear end portion of the inlet / outlet 12 of the rotating drum 11 and the hopper. A rotating shaft 24 that protrudes outward through 15 bearings 23, and a hydraulic pressure attached to the support base 14 that rotates in the direction opposite to the rotating direction of the rotating shaft 24 and the rotating drum 11 during kneading. A rotary shaft driving device 25 such as a motor, and a spiral blade 10 which is fixed to the inner bottom surface side of the rotary drum 11 of the rotary shaft 24 and spirals toward the inner bottom surface while being stirred and kneaded by the rotation of the rotary drum 11. The moving kneading material is composed of a plurality of stirring blades 26, 26, 26, 26 that can move in the direction opposite to the moving direction.

  The mixer truck 1 having the above-described configuration is a storage where the ready-mixed concrete material 13 is stored and stored in a transport bag 27. As shown in FIG. 5, the transport bag 27 is lifted by a crane 28 or the like and positioned on the hopper 15, The bottom surface of the transport bag 27 is opened, and the ready-mixed concrete material 13 is stored in the rotary drum 11 through the hopper 15.

  When the use site of ready-mixed concrete is near, it is weighed by the meter 18 and a predetermined amount of water 20 is supplied from the kneading water tank 19 into the rotary drum 11.

  When the use site of ready-mixed concrete is far and takes a long time, it travels to the use site of ready-mixed concrete at a preset time, and a predetermined amount of water 20 is transferred from the kneading water tank 19 to the rotary drum 11 there. Supply.

  In this state, the rotating drum 11 is rotated forward by the hydraulic motor 5, and the rotating shaft driving device 25 of the kneading promoting device 21 is driven so that the plurality of stirring blades 26, 26, 26, 26 are set in the rotating direction of the rotating drum 11. Rotate in reverse.

  By rotating the rotating drum 11, the ready-mixed concrete material 13 and the water 20 are moved toward the inner bottom surface of the rotating drum 11 while being stirred and kneaded by the spiral blade 10, and the inner bottom surface near the inner bottom surface of the rotating drum 11. The kneaded material that has moved in the direction can be cut with a plurality of stirring blades 26, 26, 26, 26 and moved in the opposite direction to efficiently stir and knead efficiently.

  For this reason, the ready-mixed concrete 16 can be manufactured by stirring and kneading the ready-mixed concrete material 13 and the water 20 in a relatively short time.

  Even if the kneading promoting device 21 is stopped and only the rotating drum 11 is rotated so that the rotating shaft 24 does not rotate, the kneaded material that moves toward the inner bottom surface of the rotating drum 11 is mixed with a plurality of stirring blades. It can also cut | disconnect by 26, 26, 26, 26 and knead | mixing can be promoted efficiently.

  The ready-mixed concrete 16 produced in the rotary drum 11 is discharged to the outside through the discharge chute 17 from the inlet / outlet 12 by the spiral blade 10 by reversely rotating the rotary drum 11 at the site.

  At this time, by rotating the rotating shaft 24 of the kneading promoting device 21, the ready-mixed concrete 16 can be efficiently discharged from the rotating drum 11 by the plurality of stirring blades 26, 26, 26, 26.

  By transporting the transport bag 27 containing the ready-mixed concrete material 13 to the use site of ready-mixed concrete, the ready-mixed concrete can be manufactured and used by using the mixer truck 1 at the use site.

[Different forms for carrying out the invention]
Next, different modes for carrying out the present invention shown in FIGS. 6 to 11 will be described. In the description of the different embodiments for carrying out the present invention, the same components as those in the first embodiment for carrying out the present invention are denoted by the same reference numerals, and redundant description is omitted.

  The second embodiment for carrying out the present invention shown in FIGS. 6 to 8 is mainly different from the first embodiment for carrying out the present invention in that the rotary shaft 24 is attached to the hopper 15 so as not to rotate. Such a kneading promoting device 21A is used in that a kneading promoting device 21A using an arm 29 fixed to the rotating shaft 24 and a rotating shaft fixing means 31 fixed to the tip hopper 15 of the arm 29 with a bolt 30 or the like is used. Even with the mixer vehicle 1A using the above, the same effect as the first embodiment for carrying out the present invention can be obtained.

  The third embodiment for carrying out the present invention shown in FIGS. 9 to 11 is mainly different from the first embodiment for carrying out the present invention in that the driving force of the traveling engine 32 of the truck 2 is changed. A hydraulic pump 37 is driven by a drive shaft 36 via universal joints 35, 35 from a power take-off device 34 provided on the side surface of the transmission 33, and a hydraulic motor 38 is rotationally driven by the driving force of the hydraulic pump 37 to reduce the speed reducer. In this way, the mixer drum 1B can rotate the rotating drum 11 by using the driving force of the traveling engine 32 of the truck 2 in this way. The same effect as the first embodiment for carrying out the present invention can be obtained.

  In this embodiment, the driving force of the traveling engine 32 is always connected to the power take-out device 34 except when the change lever 40 of the transmission 33 is operated to the neutral position.

  Further, when the truck 2 does not travel, the hydraulic pump 37 may be driven by an electric motor.

  Further, the shape of the stirring blades 26, 26, 26, 26 of the kneading promoting device 21 is cut and pushed back by kneading the kneaded material moving toward the inner bottom surface of the rotating drum 11 while being stirred and kneaded by the spiral blade 10. However, any shape may be used as long as it can be forcibly kneaded, and a number of stirring blades other than four may be used.

  INDUSTRIAL APPLICABILITY The present invention is used in an industry for manufacturing a mixer truck capable of manufacturing ready-mixed concrete by traveling while stirring and kneading ready-mixed concrete material and water.

1, 1A, 1B: mixer truck, 2: truck,
3: loading platform, 4: hydraulic motor support,
5: Hydraulic motor, 6: Roller,
7: Rotating drum support, 8: Drive shaft,
9: Roller ring, 10: Spiral blade,
11: Rotating drum, 12: Entrance / exit,
13: Ready-mixed concrete material, 14: Support base,
15: Hopper, 16: Ready-mixed concrete,
17: Discharge chute, 18: Meter
19: kneading water tank, 20: water,
21, 21A: Kneading promotion device, 22: Bearing,
23: bearing, 24: rotating shaft,
25: Rotating shaft drive device, 26: Stirring blade,
27: Transport bag, 28: Crane,
29: Arm, 30: Bolt,
31: Rotating shaft fixing means, 32: Engine for traveling,
33: Transmission, 34: Power take-out device,
35: Universal joint, 36: Drive shaft,
37: Hydraulic pump, 38: Hydraulic motor,
39: Reducer, 40: Change lever.

Claims (2)

In a mixer truck provided with a rotating drum that can be rotated forward and backward by a driving device in which a spiral blade is fixed to an inner wall surface of a truck bed capable of producing ready-mixed concrete, a central portion of an inner bottom of the rotating drum A bearing fixed to the bearing, a tip end of which is rotatably attached to the bearing, a rear end projecting outward from the entrance / exit of the rotating drum, and a support or rotation fixed to the loading platform located at the projecting section A rotary shaft rotatably attached to the drum support, and the rotary drum doorway that rotates the rotary shaft in a direction opposite to the rotation direction during kneading of the rotary drum, or is disabled when the rotary drum rotates. A rotating shaft driving device or a rotating shaft fixing means attached to a supporting table or a rotating drum supporting table fixed to the side loading platform, and an inner bottom surface of the rotating drum of the rotating shaft A kneading promoting device comprising a plurality of agitating blades, which are fixed to the kneading material and can move the kneading material that is kneaded by the rotation of the rotating drum and moves toward the inner bottom surface in the direction opposite to the moving direction. A mixer vehicle characterized by comprising: 2. The mixer truck according to claim 1, wherein the rotary shaft driving device rotates the rotary shaft only when the ready-mixed concrete manufactured by the rotary drum is discharged to the entrance / exit side.

Images