JP2003033908A - Manual mixer for construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive manual mixer for construction, which can mix a plurality of materials and can efficiently mix a small quantity of concrete, etc., in a small place by means of a simple device. SOLUTION: This mixer is equipped with an approximately cylindrical and hollow drum (10) whose outer periphery is made to serve partially as an openable/closable lid (20) and whose both end surfaces are closed, a supporting shaft (28) which passes through the drum (10) along the central axis of the drum (10), a holder (26) for holding the supporting shaft (28) horizontally, a manual handle (24) for rotating the drum (10) about the supporting shaft (28), and an agitation blade (40) which is fixed to an inner surface of the drum (10).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual mixer used for kneading a small amount of concrete or the like at a construction site such as road construction, construction work and civil engineering work.

[0002]

2. Description of the Related Art In road construction, construction work and civil engineering work, cement, sand,
It mixes pebbles and water with water, carries this kneaded material to the site, and pours it into the necessary places during construction.

However, in small construction such as road repair,
Carrying the kneaded product in a concrete mixer truck is too much, which is inefficient. Therefore, a small concrete mixer driven by a motor or an engine is used.
This concrete mixer is kneaded by rotating a kettle-shaped container by itself, and by swinging it around a horizontal axis that traverses the container, the opening is turned up or tilted downward, and materials are added or kneaded. Is to be discharged.

There is also a method in which the material is put in a flat bottom container of a substantially ship bottom type and kneaded manually by using a scoop. It may also be put in a large bucket or the like and kneaded with a trowel or the like.

[0005]

In the above-mentioned motor- or engine-driven compact concrete mixer, a motor and an engine must be installed in addition to a pot-shaped container, so that a large space is required for these installations. Further, since the kettle-shaped container has to rotate around a horizontal axis while rotating on its own axis, the structure is complicated, the size becomes large, and the cost becomes high. Further, in the case of kneading by hand using a scoop or trowel, there is a problem that the work efficiency is poor.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a manual mixer which is capable of efficiently kneading a small amount of concrete or the like in a narrow place with a simple device and is inexpensive. To aim.

[0007]

According to the present invention, an object of the present invention is to provide, in a manual mixer for construction work in which a plurality of materials are kneaded, a substantially cylindrical hollow member having an outer peripheral part having an openable / closable lid and both end faces closed. A drum, a support shaft that penetrates the drum along its central axis, a holder that horizontally holds the support shaft, a manual handle that rotates the drum about the support shaft, and an inner surface of the drum. And an agitating blade fixed to the work manual mixer for construction.

The drum is most preferably a regular hexagonal cylinder, but may be a regular pentagonal cylinder, a regular octagonal cylinder or the like. The shape may be a non-regular polygonal cylinder, but a regular polygonal cylinder is preferable in consideration of the easiness of rotation of the drum.

If the drum has a small number of polygonal sides, it will not rotate smoothly, so it is desirable to have a large number of sides. When the number of sides is increased to the limit, the drum becomes cylindrical, but in this case, it is necessary to provide a stirring blade on the inner peripheral surface to promote stirring. A polygonal shape is preferable in order to provide the stirring blades only on the inner surfaces of both end surfaces other than the inner peripheral surface.

It is desirable that the holder for supporting the drum be provided with a stopper for restricting the rotation of the drum. This stopper is used, for example, to fix the drum when charging the material into the drum, or to temporarily stop the discharging when discharging the kneaded material.

The drum may be mounted on the carrier frame of the truck for use. In this case, the holder is composed of a hanger that is hooked on the upper edge of the carrier frame. The hanger has a support shaft that projects horizontally to the outside of the carrier frame, and rotatably holds the drum on the support shaft. In this case the handle is attached to the drum itself.

The drum can also be installed on the ground.
In this case, the holder is a stand that keeps the drum separated from the ground for a predetermined time. The stand rotatably holds a support shaft connected to the drum, one end of the support shaft is projected from a bearing, and a manual handle is fixed to the projecting end.
The height and structure of the stand should be determined so that a wheelbarrow for carrying kneaded materials can enter below the drum.

[0013]

1 is an exploded perspective view of an embodiment of the present invention,
2 is a front view, FIG. 3 is a rear view, FIG. 4 is a plan view, FIG. 5 is a bottom view, FIG. 6 is a left side view, FIG. 7 is a right side view, and FIG. 8 shows the arrangement of stirring blades in the drum. FIG. 9 is a side view, FIG. 9 is a diagram showing an arrangement of stirring blades fixed to the front plate, FIG. 10 is a diagram showing an arrangement of stirring blades also fixed to the rear plate, and FIG. 11 is a support for showing a supporting structure of the drum. It is a sectional view near the axis. See also FIG.
2 is a figure which shows a use condition.

In these drawings, reference numeral 10 is a drum, which is a regular hexagonal front plate 12 and a rear plate 14 and five flat plates 1 connecting the corresponding sides of the front plate 12 and the rear plate 14.
6 and a cover plate 20 that closes the opening 18 form a hollow regular hexagonal cylinder with both end surfaces closed. The regular hexagonal cylindrical drum 10 has an opening 18 on one side, and a lid plate 20 can be attached to and detached from the opening 18. That is, the engaging pieces 20b, 20b formed integrally with the grip 20a and extending on the adjacent flat plates 16 on two sides are fixed to the lid plate 20, and the engaging pieces 20b, 20b are provided with two adjacent pieces. The tightening bolts 22, 22 held on the flat plate 16 on the side can be engaged.

Therefore, by engaging the fastening bolts 22 and 22 with the engaging sides 20b and 20b of the lid plate 20 and fastening them, the lid plate 20 is fixed by closing the opening 18 of the drum 10. The lid plate 20 can be removed and the opening 18 can be opened by loosening the cover plates 22 and 22.

A manual handle 24 is attached to the drum 10. As shown in FIG. 1, the handle 24 is located near the side of the drum 10 opposite to the opening 18 of the drum 1.
It is mounted parallel to the central axis A of zero. This handle 24
Is slidable parallel to the central axis A, when it is used, it is pulled out to the front plate 12 side as shown in FIGS. 1 and 12, and when it is not used, as shown in FIGS.
2 and the rear plate 14) and can be housed by pushing.

Reference numeral 26 is a hanger as a holder for holding the drum 10. In this hanger 26, a pair of left and right J-shaped members 26a, 26a, which are formed in an inverted J shape in a side view by joining L-shaped angle members, are connected to each other by a horizontal connecting member
6b, 26c and 26d are connected (FIG. 1,
6 and 7).

The central connecting member 26c has a quadrangular cross section (see FIG. 11), and the support shaft 28 is fixed to the center. That is, as shown in FIG. 11, the support shaft 28 is fitted and fixed to the cored bar 28a welded to the connecting member 26c by welding.

A cylinder 30 penetrates the drum 10 coaxially with its central axis A, and both ends of the cylinder 30 are welded to the front plate 12 and the rear plate 14. The drum 10 is attached to the hanger 26 such that the spindle 28 is passed through the cylinder 30. In FIG. 11, reference numerals 32 and 32 denote bearing members which are fitted to both ends of the cylinder 30 and are in sliding contact with the support shaft 28, and are made of a sintered alloy containing oil. Further, 34 and 34 are washers. The drum 1 attached to the support shaft 28 in this manner
0 is a long bolt 36 that penetrates near the tip of the support shaft 28.
To prevent it from coming off.

Reference numeral 38 denotes a stopper attached to the lowermost connecting member 26b of the hanger 26. This stopper 3
8 is a U-shaped bolt 38 fixed horizontally to the connecting member 26b.
a main body member 38 having a substantially U-shaped cross section, which is swingably held by a.
b, a movable member 38c capable of expanding and contracting in the length direction with respect to the main body member 38b, and a tension spring 38d for pulling the movable member 38c toward the main body member 38b side (see FIG. 5). An end plate 38e orthogonal to the expansion / contraction direction is fixed to the tip of the movable member 38c.

The end plate 38e can be engaged with either side of the drum 10 by hooking a fingertip from below and pulling it forward (on the front plate side) while the stopper 38 is raised to the horizontal position. it can. The end plate 38e is a tension spring 38d.
Is held in a state of being engaged with one side of the drum 10,
The rotation of the drum 10 is restricted. If you hook your fingertip on the lower edge of this end plate 38e and pull it toward you (front, front plate side),
The end plate 38e can be released from the drum 10. In this state, if the stopper 38 is hung down around the U-shaped bolt 38a, the drum 10 can rotate.

A large number of stirring blades 40 are provided on the inner wall of the drum 10.
(40a, 40b) are attached. That is, a large number of horizontally stirring blades 40a, 40b are fixed to the front plate 12 and the rear plate 14 by rivets. The positions and lengths of these stirring blades 40a and 40b are set so that they do not contact each other and overlap in the thickness direction of the drum 10 as shown in FIG.

The manual mixer constructed as described above is
As shown in FIG. 12, it is used by hanging it on the carrier frame 44 of the truck 42. That is, the J-shaped members 26a and 26a of the hanger 26 are hung on the luggage carrier frame 44 so that the support shaft 28 of the hanger 26 is located outside the luggage carrier frame 44 with the drum 10 removed, and the clamp bolts 46 and 46 are attached from the inside of the luggage carrier. Tighten to secure the hanger 26 to the carrier frame 44. And spindle 28
Attach the drum 10 to the
Do not prevent 0 from slipping out.

Next, the stopper 38 is operated to operate the drum 10
The drum 10 is fixed at a position where the opening 18 of the above is directed upward or obliquely upward. The lid plate 20 is removed, and a predetermined amount of cement, sand, jade, water, etc. is put into the drum 10.
Then, after the lid 20 is attached, the manual handle 24 is grasped and the drum 10 is rotated to knead. When cement, sand, jars, etc. are placed on the loading platform of the truck 42 here, these can be easily loaded into the drum 10 from the loading platform and workability is good.

When the drum 10 is rotated about 10 times, the kneading can be sufficiently performed. After that, the lid plate 20 is moved upward and the drum 10 is stopped, the lid plate 20 is removed, and the opening 18 is opened. A hand wheelbarrow for transporting concrete is made to enter below the drum 10 and the drum 10 is slowly rotated, so that the kneaded material in the drum 10 flows down from the opening 18 to the tray of the wheelbarrow. The flow amount is adjusted by the rotation angle of the drum 10.

[0026]

[Other Embodiments] FIG. 3 is an exploded perspective view of another embodiment. In this embodiment, the holder 50 is a holder for setting the drum 10 on the ground.

That is, the stand 50 has a structure in which a pair of left and right triangular frames 52 and 52 made of pipes are connected by a connecting pipe 54, and bearings 56 and 56 are fixed to the apexes of both triangular frames 52 and 52. A spindle 60 is inserted between the bearings 56, 56 with a drum 58 interposed therebetween. One end of the cylinder 62 fixed to the center of the drum 58 is
It slightly projects to one side, and the split pin 64 penetrates through this projecting portion and the support shaft 60. Therefore, the drum 58 rotates integrally with the support shaft 60.

One end of the support shaft 60 penetrates the bearing 56 and projects to the outside of the bearing 56. A manual crank handle 66 is fixed to the protruding end. As a result, the support shaft 60 and the drum 58 can be rotated by the handle 66. Although not shown, it is desirable to provide a stopper for fixing the drum 58.

In this embodiment, it is important to properly set the distance between the left and right triangular frames 52, 52 of the stand 50 and the height of the bearing 56. That is, a wheelbarrow (not shown) having a concrete transport tray can enter below the drum 58. In this case, when the lid plate 20 is opened after kneading and the kneaded product is transferred to the tray of the unicycle, the unicycle may be inserted under the drum 58. Then, if the drum 58 is rotated little by little while adjusting the rotational position of the drum 58, the kneaded product flows directly from the opening 18 to the tray. This simplifies the work.

[0030]

As described above, according to the present invention, since the substantially cylindrical drum is held on the support shaft horizontally held by the holder and the drum is rotated and kneaded by the manual handle, the apparatus can be simplified and downsized. It is also inexpensive and can be used in tight spaces. It is also suitable for kneading a small amount. Further, by opening the cover plate which is a part of the outer circumference of the drum and turning the drum, the kneaded product can be easily flowed down from the opening and transferred to a tray or the like located below the kneaded product, resulting in good work efficiency.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of the present invention.

[Figure 2] Similarly, a front view

[Figure 3] Similarly, rear view

FIG. 4 is a plan view of the same.

[Figure 5] Similarly, bottom view

FIG. 6 is a left side view of the same.

[Figure 7] Similarly, right side view

FIG. 8 is a layout view of stirring blades in the drum

FIG. 9 is a layout view of a stirring blade on the front plate.

FIG. 10 is a layout view of stirring blades on the rear plate.

FIG. 11 is a cross-sectional view showing a drum support structure.

FIG. 12 is a diagram showing a usage state.

FIG. 13 is an exploded perspective view of another embodiment.

[Explanation of symbols]

10,58 drums 12 front plate 14 Rear plate 16 flat plate 18 openings 20 lid plate 24, 66 Manual handle 26 Hanger as holder 28, 60 spindle 38 Stopper 44 luggage frame 50 Stand as holder 56 bearing

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[Procedure amendment]

[Submission date] July 24, 2001 (2001.7.2)
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Claims (5)

[Claims] 1. A hand-operated manual mixer for kneading a plurality of materials, comprising: a substantially cylindrical hollow drum whose both ends are closed and whose outer periphery is a lid that can be opened and closed; A spindle that penetrates along the shaft, a holder that horizontally holds the spindle, a manual handle that rotates the drum around the spindle, and a stirring blade fixed to the inner surface of the drum. A manual mixer for construction, characterized by being provided. 2. The manual mixer for construction according to claim 1, wherein the drum is a regular hexagonal cylinder. 3. The manual mixer for construction according to claim 1, wherein the holder is provided with a stopper for restricting rotation of the drum. 4. The holder is a hanger that can be hung on the bed frame of a truck, the drum is rotatably held by a spindle that horizontally projects from the hanger, and the manual handle is horizontally extended from the vicinity of the outer periphery of the drum to the outside. The manual mixer for construction according to any one of claims 1 to 3, which projects to the inside. 5. The holder is a stand for holding the drum on the ground by separating the drum from the ground for a predetermined period of time. The spindle is coupled to the drum and one end of the holder protrudes through a bearing of the stand. The manual mixer for construction according to claim 1, wherein the handle is fixed.