JP6312218B2 - Mixer car and kneading equipment - Google Patents

Description

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

Conventionally, mixer trucks are used when ready-mixed concrete is stored in a rotating drum from a ready-mixed concrete factory and transported to a use site while stirring.

However, there is no problem when the ready-mixed concrete manufacturing plant and the use site are relatively close, but there is a disadvantage that the ready-mixed concrete has a problem such as deterioration of quality when it is far away or traffic congestion occurs.

In order to eliminate this drawback, raw concrete material is put into the rotating drum, and a predetermined amount of water is put into the rotating drum at a preset time until the site of use, and the rotating drum is rotated and kneaded. However, although the mixer truck to be transported to the site of use is considered by the applicant, the structure is complicated and expensive because the stirring blade is fixed through a support bar rotatably attached to the shaft. There were drawbacks.

JP 2015-24522 A

  An object of the present invention is to provide a mixer truck and a kneading apparatus that can efficiently knead raw concrete material in a rotating drum and can be installed at low cost in view of the above-described conventional drawbacks.

  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 mixer truck of the present invention has a kneading apparatus using a rotating drum, which has a spiral blade fixed to its inner wall surface and can be rotated forward and backward by a drive device, as a truck bed. In the mixer truck, the kneading device is attached to a shaft provided at a tip portion of the rotary drum at a substantially central portion of the inner bottom surface of the rotary drum, and a portion near or near the tip portion of the shaft, and the rotation The kneading material that moves toward the inner bottom surface while being kneaded by rotation of the drum is composed of a stirring blade that can move in a direction opposite to the moving direction, and the tip of the shaft is the rotating drum. And the rear end portion is fixed to the support member, and the stirring blade is formed in a spiral shape .

Further, the kneading apparatus of the present invention is a kneading apparatus using a rotating drum in which a spiral blade is fixed to the inner wall surface and can be rotated forward / reversely by a driving device. A shaft provided at a substantially central portion of the inner bottom surface of the rotating drum, and attached to a portion near or near the tip of the shaft, and moves toward the inner bottom while being kneaded by the rotation of the rotating drum. The kneading material is composed of a stirring blade capable of moving the kneading material in a direction opposite to the moving direction, and the shaft has a front end supported by the rotating drum and a rear end fixed to a support member. The stirring blade is formed in a spiral shape .

As is clear from the above description, the present invention has the following effects.
(1) In the invention described in claim 1, the kneaded material approaching the wall surface of the rotating drum can be efficiently kneaded by the stirring blade fixed to the shaft, and the ready-mixed concrete can be produced efficiently. Can do.
(2) Since the shaft is fixed to the support member so as to be rotatable with respect to the rotating drum, the shaft can be prevented from rotating in synchronization with the rotating drum when the rotating drum is rotated. Therefore, the kneaded material can be efficiently sheared and kneaded.
(3) Since the structure is simple, it can be manufactured at low cost.
(4) The kneaded material can be kneaded more efficiently by the helical stirring blade.
(5) According to the invention described in claim 2 , the same effects as in the above (1) to (4) can be obtained, and the rotating drum and the like can be operated from the driver's seat.
(6) The invention according to claim 3 can also obtain the same effects as the above (1) to ( 4 ).

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. FIG. 4 is a partial schematic cross-sectional explanatory view taken along line 4-4 of FIG. Explanatory drawing of the attachment state of the shaft and stirring blade of the 1st form for implementing this invention. Explanatory drawing in the case of throwing ready-mixed concrete material in the rotating drum of the 1st form for implementing this invention. The front view of the 2nd form of the kneading apparatus for implementing this invention. The top view of the 2nd form of the kneading apparatus for implementing this invention. FIG. 9 is a partial schematic cross-sectional explanatory view taken along line 9-9 in FIG. 8.

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 FIG. 1 to FIG. 6, reference numeral 1 denotes a mixer according to the present invention capable of producing ready-mixed concrete until it arrives at the use site, or producing ready-mixed concrete at the use site. This mixer vehicle 1 is a tilted rotation in which a spiral blade 4 is fixed to an inner wall surface 3a of a loading platform 7 of a truck 2 and can be rotated forward and backward by a driving force of a driving device 5. It is a mixer truck provided with a kneading device 6 using a drum 3.

The rotary drum 3 has a substantially central portion of the inner bottom surface 3b on the distal end side of the loading platform 7 with respect to an entrance / exit (opening end) 3c on the rear end portion side of the loading platform 7, and a distal end portion of the rotary drum 3 substantially at the central portion of the inner bottom surface 3b. An upper end of a support base as a support member 19 which is provided in a supported state via a fixed bearing 26 and whose rear end passes through a substantially central portion of the entrance / exit 3c of the rotary drum and is fixed to the rear end of the cargo bed 7. The tilted shaft 8 fixedly attached to the part and the kneading material 9 moving toward the inner bottom surface while being kneaded by the rotation of the rotary drum 3 can be moved in the direction opposite to the moving direction. A helical stirring blade 10 which is attached to a portion near or near the tip of the shaft 8 and is wound around the shaft 8 at a predetermined interval, and the kneading device. 6 can be operated And an operating panel 11 provided in the driver's seat of the rack 2.

In other words, the stirring blade 10 is different from the spiral blade 4, and the portion that extends and folds back in the major axis direction is not fixed to the inner wall surface 3 a of the rotating drum 3 but fixed to the shaft 8. It is. Thereby, even if the rotating drum 3 rotates, the shaft 8 and the stirring blade 10 are fixed without rotating, and the kneaded material 9 can be kneaded so as to be sheared.

  Here, the front end portion of the shaft 8 and the front end portion of the stirring blade 10 refer to the inner bottom surface 3 b side of the rotating drum 3.

  The driving device 5 includes a hydraulic motor support 12 fixed to a front center portion of the loading platform 7 of the truck 2, a hydraulic motor 13 attached to the hydraulic motor support platform 12, and both ends of the rear of the loading platform 7. The rotary drum support base 15 having a roller 14 on the upper surface fixed to the near portion and the drive shaft 16 of the hydraulic motor 13 are configured.

The kneading device 6 is rotated by a roller ring 17 whose one end is attached to the drive shaft 16 of the hydraulic motor 13 and whose portion near the other end is in contact with the roller 14 of the rotary drum support base 15. A rotating drum 3 having a spiral blade 4 fixed to the inner wall surface 3a, and one end portion rotatably attached to a central portion of the inner bottom surface 3b of the rotating drum 3 via a bearing 26. The shaft 8 protrudes to the inside of the drum 3, and the other end is fixedly attached to a support member 19 fixed to the loading platform 7 on the entrance / exit side of the rotating drum, and attached to a portion near the tip of the shaft 8. In addition, a helical stirring blade 10 capable of moving the kneading material 9 moving toward the inner bottom while being kneaded by the rotation of the rotating drum 3 in the direction opposite to the moving direction, and the rotating drum A hopper 20 attached to a support member 19 fixed to the loading platform 7 for supplying raw concrete material 18 such as cement, aggregate (sand, gravel, etc.), admixture, etc. The discharge concrete chute 22 which receives the ready-mixed concrete 21 discharged from the entrance / exit 3c of the rotary drum 3 and discharges it to the outside, and the ready-mixed concrete 21 attached to the front part of the loading platform 7 are manufactured in the rotary drum 3. Sometimes, it is composed of a metering and kneading water tank 23 with a meter capable of supplying the metered water into the rotary drum 3.

The operation panel 11 is capable of driving a pump (not shown) of the metering and kneading water tank 23 to supply water into the rotary drum 3.
The central axis of the shaft 8 and the rotational axis of the rotary drum 3 are substantially the same axis in this embodiment, but the central axis of the shaft 8 and the rotational axis of the rotary drum 3 are provided in an eccentric state. May be.

  The mixer truck 1 having the above structure is filled with a mixture of sand and gravel, a mixture of sand, gravel, an admixture, etc., or a ready-mixed concrete material 18 in which cement is mixed with these mixtures. 6, the transport bag 24 is lifted by a crane 25 or the like, is placed on the hopper 20, the bottom surface of the transport bag 24 is opened, and the ready-mixed concrete material 18 is put into the rotary drum 3 through the hopper 20.

  The ready-mixed concrete material 18 may be put into the rotating drum 3 of the mixer truck 1 at a ready-mixed concrete manufacturing plant, or at a site where the ready-mixed concrete is used or a storage location where quality is not deteriorated. Good.

  After the ready-mixed concrete material 18 is put into the rotary drum 3, when the use site of the ready-mixed concrete is near, a predetermined amount of water measured by the measuring instrument is supplied into the rotary drum 3 from the metering and kneading water tank 23.

  If the use site of ready-mixed concrete is far and takes a long time, it travels to the ready-use site of ready-mixed concrete to a place where it can be reached in a preset time, and a predetermined amount of water is transferred from the metering / mixing water tank 23 into the rotating drum 3. Supply.

  By rotating the rotating drum 3 with the hydraulic motor 13 in this state, the raw concrete material 18 and water in the rotating drum 3 are moved toward the inner bottom surface of the rotating drum 3 by the spiral blade 4 while being kneaded.

  While being kneaded, the rotary drum 3 is separated into the left and right by the shaft 8 by moving in the direction of the inner bottom surface 3b, and is moved in the direction opposite to the moving direction by the helical stirring blade 10 and kneaded efficiently. .

For this reason, ready-mixed concrete 21 can be produced by forcibly kneading ready-mixed concrete material 18 and water in a relatively short time.
The ready-mixed concrete 21 produced in the rotating drum 3 is conveyed in the direction of the entrance / exit 3c of the rotating drum 3 by the spiral blade 4 by rotating the rotating drum 3 in the reverse direction on the site, and is discharged to the outside through the discharge chute 22. Discharged.

[Different forms for carrying out the invention]
Next, different modes for carrying out the present invention shown in FIGS. 7 to 9 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. 7 to 9 is mainly different from the first embodiment for carrying out the present invention in that it is not fixed to the truck bed but on the ground or the like. The kneading apparatus 6A can also be installed, so that even with such a kneading apparatus 6A, it is possible to obtain the same functions and effects as those of the first embodiment for carrying out the present invention. It can also be made into a mixer truck by loading on a simple truck.

The kneading device 6A includes a frame-shaped support member 19A, and a rotary drum 3A provided on the support member 19A so as to be rotatable about a central axis as a rotation axis and rotatable in a direction perpendicular to the central axis. A driving device 5A for rotating the rotating drum 3A around a central axis, a handle 27 for rotating the rotating drum 3A in a direction perpendicular to the central axis, and an approximate bottom surface 3b of the rotating drum 3A. A shaft 8A having a front end attached to the bearing 26 at the center and a rear end fixed to the upper frame 19a of the support member 19A, and the rotating drum 3A attached to a portion near the front end of the shaft 8A. The kneading material 9 that moves toward the inner bottom surface while being kneaded by the rotation of is configured with a stirring blade 10 that can move in a direction opposite to the moving direction.

The drive device 5A includes a hydraulic motor 13A, a pinion 28 fixed to the drive shaft 16A of the hydraulic motor 13A, a gear 29 that meshes with the pinion 28 and rotates the rotary drum 3A with the central axis as a rotation axis. It consists of

  The auxiliary devices such as the hopper 20, the discharge chute 22, and the metering / kneading water tank 23 may be appropriately used as necessary.

  In the embodiment of the present invention, it has been described that the operation panel can drive the pump of the metering and kneading water tank and supply water to the inside of the rotating drum. However, the operating panel drives the hydraulic motor of the rotating drum. However, it may be set so that an operation of rotating the rotating drum forward and backward can be performed.

  Further, in the embodiment of the present invention, the other end of the shaft has been described as a support base as a support member or a member fixed to the support frame, but if the member does not rotate in synchronization with the rotation of the rotating drum, Any support member may be used (for example, a hopper).

  INDUSTRIAL APPLICATION This invention is utilized in the industry which manufactures the mixer truck and kneading apparatus which mount the kneading apparatus which knead | mixes ready-mixed concrete material and water, and can manufacture ready-mixed concrete.

1: mixer truck, 2: truck,
3, 3A: rotating drum, 4: blade,
5: Drive device 6, 6A: Kneading device,
7: loading platform 8, 8A: shaft,
9: kneaded material, 10: stirring blade,
11: Operation panel, 12: Hydraulic motor support,
13: Hydraulic motor, 14: Roller,
15: Rotating drum support, 16: Drive shaft,
17: Roller ring, 18: Raw concrete material,
19, 19A: support member, 20: hopper,
21: Ready-mixed concrete, 22: Discharge chute,
23: Metering and kneading water tank, 24: Transport bag,
25: Crane, 26: Bearing
27: Handle, 28: Pinion,
29: Gear.

Claims (3)

In the mixer truck having a kneading device using a rotating drum that is fixed to the inner wall surface of a spiral blade and can be rotated forward / reversely by a driving device in a truck bed, the kneading device has a tip at the tip. A shaft provided at a substantially central portion of the inner bottom surface of the rotating drum, and attached to a portion near or near the tip of the shaft and moving toward the inner bottom surface while being kneaded by the rotation of the rotating drum. The kneading material is composed of a stirring blade capable of moving the kneading material in a direction opposite to the moving direction, and the shaft has a front end supported by the rotating drum and a rear end fixed to a support member. The mixer blade is formed in a spiral shape . The mixer truck according to claim 1 , wherein an operation panel capable of operating the kneading apparatus is provided in a driver seat of the truck. In a kneading apparatus using a rotating drum in which a spiral blade is fixed to the inner wall surface and can be rotated forward and reverse by a driving device, the kneading apparatus has a tip portion at a substantially central portion of the inner bottom surface of the rotating drum. And a kneading material attached to a portion near or near the tip of the shaft and moving toward the inner bottom surface while being kneaded by the rotation of the rotating drum. The shaft has a tip end portion supported by the rotary drum and a rear end portion fixed to a support member, and the stirring blade is a spiral member. A kneading apparatus characterized by being formed into a shape .

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