JP3052627U - A device for detecting the remaining amount of objects to be stirred in a mixer - Google Patents

Abstract

(57) [Summary] [Problem] To easily determine the remaining amount of an object to be agitated, easily and accurately replenish the object to be agitated, perform a stirring operation with high work efficiency, and use a sprocket to drive a rotating shaft. A simple, compact, compact, durable, inexpensive, economically superior, easily automated, and easy-to-automated optimal remaining amount detection device. SOLUTION: A sprocket 15 is provided on a driving side joint body A.
Are fixed on the opposing surfaces of the driving-side joint body A and the driven-side joint body B, respectively, so that the rotational force of the driving-side joint body A and the driven-side joint body A are compressed while the spring 5 is compressed. Body B
The central portion of the actuator 10 gradually projects in accordance with the amount of elastic deformation of the spring 5, and the limit switch detects a change in the actuator 10 when the stirring resistance of the object to be stirred falls below a predetermined value. It is configured to detect at 30 and detect the remaining amount of the object to be stirred.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention is mainly applied to cement, sand and water, or concrete, mortar, etc., which are mixed and agitated by adding gravel, etc., and seeds, etc. to a greening soil for vegetating lawns, flowers, etc. When an object to be stirred, such as a greening base material, which is mixed and stirred, is stirred by the rotating operation of a stirring blade built in the stirring drum, when the amount of the object to be stirred in the stirring drum is reduced. The present invention relates to a device for detecting the remaining amount of an object to be stirred in a mixer capable of automatically detecting this.

[0002]

[Prior art]

 Conventionally, in a mixer of this type, for example, the material to be stirred stirred in the stirring drum is sent from a discharge port provided at the bottom of the stirring drum via a hose or the like. It is necessary to replenish the stirrer in the stirring drum when the stirrer becomes low to some extent. Then, the remaining amount of the object to be stirred in the stirring drum has been determined based on the experience of the worker in consideration of the feeding time from the discharge port and the like. For this reason, it was difficult to judge the timing of replenishment of the material to be stirred into the stirring drum, and it was difficult to determine the timing of replenishment. Therefore, it is necessary to make it possible to clearly judge the timing of replenishment of the object to be stirred and to efficiently perform the work of stirring the object to be stirred.

[0003] The applicant of the present invention has proposed a torque detecting device capable of detecting the remaining amount of an object to be stirred in a stirring drum, as described in Japanese Utility Model Publication No. 5-5469. .

[0004]

[Problems to be solved by the invention]

 Therefore, in the present invention, the torque detecting device as described above has been devised so as to be more easy to use and to realize a smoother operation.

[0005]

Means for Solving the Problems In the remaining amount detecting device according to the first aspect of the present invention, concrete mixed with sand and water, or a mixture of gravel and the like with cement is added. Rotation of the stirring blades inside the stirring drum, the objects to be stirred, such as greening base material, which are mixed with seeds and mixed into the greening soil for planting mortars, lawns, flowers, etc. In a mixer configured to be capable of stirring by operation, a driven side joint body B fixed to a rotating shaft 25 connected to a stirring blade body, and a driving side fixed to a rotating shaft 26 driven and rotated by being appropriately connected to a power machine. A sprocket 15 for transmitting the driving torque of the rotating shaft 26 to another stirring blade body is fixed to the driving-side joint body A, and the driving-side joint body A and the driven-side joint body A are fixed to the driving-side joint body A. B are provided with locking projections 1a and 1b, respectively, on the facing surface. In addition, the engaging projections 1a and 1b are provided so as to alternately mesh with each other leaving a clearance space, so that the driving-side joint body A and the driven-side joint body B can slightly swing within a predetermined range. Spring accommodating portions 2a and 2b are formed on the locking projections 1a and 1b of the driving-side joint body A and the driven-side joint body B, respectively, and straddle the spring accommodating sections 2a and 2b. Thus, the coil-shaped spring 5 is housed so that the rotational force of the driving-side joint body A is transmitted to the driven-side joint body B while compressing the spring 5. Both ends of the hinge-shaped operator 10 are pivotally connected to the locking projections 1b of the joint 1A and the driven joint B, respectively. The central portion of the actuator 10 is formed so as to gradually protrude as the locking projection 1b approaches. A limit switch 30 is arranged on the rotation locus of the central portion of the operator 10, and the operator 10 swings in accordance with the amount of elastic deformation of the spring 5 due to the rotation of the driving side joint body A, and is covered by the stirring blade body. When the stirring resistance of the stirrer becomes equal to or less than a predetermined value, the protruding state of the central portion of the actuator 10 is detected by the limit switch 30 so that the remaining amount of the stirrer in the stirrer drum can be detected. Adopted.

Further, in the remaining amount detecting device according to the second aspect, the locking projection 1a of the driving joint A and the locking projection 1b of the driven coupling B are provided with the driving joint A. And the arcuate concave surfaces 3a and 3b respectively corresponding to the rotation centers of the driven-side joint body B, while matching the rotation centers of the driving-side joint body A and the driven-side joint body B, and having the locking projections 1a, Means for mounting a substantially cylindrical center ring C which is in sliding contact with the arc-shaped concave surfaces 3a and 3b of 1b is employed.

[0007]

[Embodiment of the invention]

 Hereinafter, the present invention will be described with reference to illustrated examples. The remaining amount detecting device of the present invention is a method for seeding cement, sand and water, or concrete, mortar, etc., which are stirred and kneaded by adding gravel or the like to these, or planting soil for vegetation such as lawns, flowers, etc. Provided on a mixer (or spraying machine) configured to be able to stir objects to be stirred, such as a greening base material, which are mixed by mixing, etc., by rotating the stirring blades provided inside the stirring drum. It is. In addition, this mixer (or spraying machine), for example, puts an object to be stirred into a stirring drum provided with an inlet with a lid, and rotates the object into the stirring drum in a rotatable manner. While being suspended, it is also stirred by a stirring blade body that is rotated by a driving force of a prime mover such as a motor or a motor provided outside the stirring drum, and the agitated object is discharged from a discharge port provided at the bottom of the stirring drum. It is configured to be fed outside the stirring drum.

[0008] The remaining amount detecting device of the present invention is fixed to the tip of the rotating shaft 25 (or the tip of the rotating shaft of the stirring blade) connected to the stirring blade via a key or the like. An outer peripheral portion of the driven-side joint body A having a driven-side joint body B and a driving-side joint body A fixed to a distal end portion of a rotating shaft 26 which is connected to a power machine and driven and rotated by a key or the like. The sprocket 15 for transmitting the driving torque of the rotating shaft 26 to the other stirring blades via the chain 20 is inserted through bolts 18, nuts 19, spring washers and the like inserted into the insertion holes 16 and 17. Is fixed.

Further, on the opposing surfaces of the driving side joint body A and the driven side joint body B, block-shaped locking projections 1a and 1b are provided, respectively, and these locking projections 1a and 1b define a clearance space. The remaining joints are provided so as to alternately mesh with each other, and the driving joint A and the driven joint B are formed so as to be slightly swingable within a predetermined range.

[0010] Then, the locking convex portions 1a, 1b of the driving-side joint body A and the driven-side joint body B are formed with spring receiving portions 2a, 2b each having a substantially round hole shape. A coil-shaped spring 5 is housed so as to straddle 2b, and is formed so as to transmit the rotational force of the driving joint A to the driven joint B while compressing the spring 5.

On the other hand, both ends of a hinge-shaped operator 10 are pivotally connected to the locking projection 1a of the driving joint A and the locking projection 1b of the driven coupling B, respectively. As the locking projection 1a of the body A and the locking projection 1b of the driven-side joint body B approach each other, the central portion of the operator 10 is formed so as to gradually protrude. The switch 30 is disposed, and the operator 10 swings in accordance with the amount of elastic deformation of the spring 5 due to the rotation of the driving-side joint body A, so that the stirring resistance of the object to be stirred by the stirring blade body becomes a predetermined value or less. At this time, the protruding state of the central portion of the actuator 10 is detected by the limit switch 30 so that the remaining amount of the object to be stirred in the stirring drum can be detected.

That is, the rotational force of the driving-side joint body A is configured to be transmitted to the driven-side joint body B via the spring 5, and the elastic deformation amount corresponding to the compression force applied to the spring 5 is reduced. Correspondingly, when the central portion of the operator 10 protrudes and the agitation resistance of the object to be agitated by the agitating blade body becomes a predetermined value or less, the central portion of the operator 10 contacts the limit switch 30 and agitates. It is configured to detect that the remaining amount of the object to be stirred in the drum has reached a predetermined value.

Incidentally, the locking projection 1a of the driving joint A and the locking projection 1b of the driven coupling B have an arcuate concave surface that matches the rotation center of the driving coupling A and the driven coupling B. 3a and 3b are formed respectively, while a substantially cylindrical member which coincides with the rotation center of the driving side joint body A and the driven side joint body B and slidably comes into contact with the arcuate concave surfaces 3a and 3b of the locking projections 1a and 1b. A center ring C is formed, and the center ring C is rotatably mounted between a driving joint A and a driven joint B. That is, the center ring C ensures that the center of the locking projection 1a of the driving-side joint body A and the center of the locking projection 1b of the driven-side joint body B coincide with each other. The swinging between the body A and the driven joint body B is performed smoothly, the rotational force of the driving joint body A is transmitted to the driven joint body B in a well-balanced manner, and the elastic force of the spring 5 can be smoothly exhibited. The center is displaced or deformed even if a strong external force acts on the locking projection 1a of the driving joint A and the locking projection 1b of the driven coupling B. It is provided so that there is no.

The spring receiving portions 2a and 2b of the locking projections 1a and 1b have a spring lid 6 made of synthetic resin and a snap ring 7 made of metal attached to the other end, and can receive the other end of the spring 5. It is configured as follows. That is, a notch groove is appropriately formed around the other end portion of the spring accommodating portions 2a and 2b, a snap ring 7 is forcibly fitted into the notch groove, the spring ring 6 is received by the snap ring 7, and the spring cover 6 is , So that the other end of the spring 5 can be received. The other end portions of the spring housing portions 2a and 2b may be formed so as to receive the other end portion of the spring 5 reliably and stably. For example, the other end portions of the spring housing portions 2a and 2b may be used. The end portion may be closed in advance.

The operating element 10 is disposed in a diagonally concave portion of the locking projections 1a and 1b, and includes a convex swinging piece 11 and a concave swinging piece 12. It is configured to be swingably connected via a pivot 13. Then, both ends of the operating element 10 are swingably attached to the locking projections 1a and 1b via the pivot 13 so as to be substantially in the shape of a front (FIGS. 1 and 2). 3, see FIG. 4). That is, the locking projection 1a of the driving joint A comes into contact with the locking projection 1b of the driven coupling B, and the rotational force of the driving joint A is directly transmitted to the driven coupling B. In this case, the central portion of the actuator 10 does not protrude and is formed so as not to contact the limit switch 30. On the other hand, the elastic restoring force of the spring 5 is superior, and the locking convex portion 1a of the driving side joint body A and When the locking projection 1b of the driven side joint B separates from and the torque of the driving side joint A is transmitted to the driven side joint B via the spring 5, the central portion of the actuator 10 projects greatly. And is formed so as to contact the limit switch 30.

Incidentally, the specific configuration and shape of the remaining amount detecting device, the specific configuration, shape, dimensions, and material of the driving joint A, the specific configuration, shape, dimensions, material, and center ring of the driven coupling B Specific configuration, shape, size, material of C, specific configuration, shape, dimension, number, arrangement position of locking projections 1a, 1b, specific configuration, shape, dimension, arc of spring housings 2a, 2b Specific configuration, shape, dimensions of concave surfaces 3a, 3b, specific configuration, shape, dimensions, material, number of spring 5, specific configuration, shape, dimensions, material of spring lid 6, specific configuration of snap ring 7 , Shape, size, material, specific configuration of the actuator 10, shape, size, material, number, specific configuration of the swinging pieces 11, 12, shape, size, material, specific configuration, shape of the pivot 13, Dimensions, material, specific configuration and shape of the sprocket 15, Dimensions, materials, means for fixing to the driving side joint body A, specific configurations, shapes and dimensions of the rotating shafts 25 and 26, specific configurations, shapes, arrangement positions, numbers, etc. of the limit switches 30 are those shown in the drawings. It can be freely set as appropriate without being limited to.

The remaining amount detecting device according to the present invention is configured as described above. Next, an example of use of the device will be described. First, an object to be stirred is charged into the stirring drum from the charging port. Next, an appropriate power machine is operated, and the rotation shaft 26 is rotated via the reduction gear to rotate the driving joint A. Then, the rotational force of the driving-side joint body A is transmitted from the locking convex part 1a to the locking convex part 1b via the spring 5 and transmitted to the driven-side joint body B, and further transmitted via the rotary shaft 25. It is transmitted to the stirring blade body in the stirring drum to stir the object to be stirred in the stirring drum. By the way, when there are many objects to be stirred in the stirring drum, the stirring resistance of the stirring blade body is large. Therefore, the locking projection 1a of the driving side joint body A elastically compresses the spring 5 and the driven side. The rotation force of the driving-side joint body A comes into direct contact with the driven-side joint body B by coming into contact with the locking projection 1b of the joint body B (see FIG. 4). At this time, the central portion of the actuator 10 does not protrude much and does not come into contact with the limit switch 30.

When the object to be agitated is fed from the discharge port at the bottom of the agitating drum and decreases, the agitation resistance of the agitating blade gradually decreases, so that the elastic restoring force of the spring 5 is superior, The locking projection 1a of the driving-side joint body A and the locking projection 1b of the driven-side joint body B are separated, and the rotational force of the driving-side joint body A is transmitted to the driven-side joint body B via the spring 5. (See FIG. 3). At this time, the central portion of the actuator 10 protrudes greatly, comes into contact with the limit switch 30, and informs the operator that the amount of the object to be stirred in the stirring drum is equal to or less than a predetermined amount. Will stop the operation of the motor as appropriate.)

[0019]

[Effect of the invention]

 Therefore, the remaining amount detecting device according to the first aspect of the present invention is a greening method for vegetating concrete, mortar, lawns, flowers, and the like, which are mixed with cement by adding sand and water, or gravel thereto to the mixture. In a mixer configured to be able to stir an object to be stirred, such as a greening base material, which is stirred by mixing seeds and the like into the cultivated soil by rotating the stirring blades provided inside the stirring drum. A driven joint B fixed to a rotating shaft 25 connected to the motor, and a driving joint A fixed to a rotating shaft 26 driven and rotated by being appropriately connected to a power machine. Fix the sprocket 15 for transmitting the driving torque of the rotary shaft 26 to another stirring blade body, and the engaging convex portions 1a, 1b, and the locking projections 1a, 1b are The driving side joint body A and the driven side joint body B are formed so as to be able to slightly swing within a predetermined range with respect to each other, so that the driving side joint body A and the driven side joint body B are alternately engaged with each other. The locking projections 1a and 1b of the joint body B are formed with spring accommodating portions 2a and 2b, respectively, and accommodate the coil-shaped spring 5 so as to straddle the spring accommodating portions 2a and 2b. The rotational force of the side joint A is formed so as to be transmitted to the driven joint B while compressing the spring 5, while the locking protrusion 1 a of the driving joint A and the locking protrusion of the driven joint B are formed. Both ends of a hinge-shaped operating element 10 are pivotally connected to the section 1b, respectively, so that the locking convex section 1a of the driving-side joint body A and the locking convex section 1b of the driven-side joint body B approach each other. The central part of the actuator 10 is formed so as to protrude gradually. The limit switch 30 is disposed, and the operator 10 swings in accordance with the amount of elastic deformation of the spring 5 due to the rotation of the driving joint A, so that the stirring resistance of the object to be stirred by the stirring blade body becomes a predetermined value or less. In this case, the limit switch 30 detects the protruding state of the central part of the operator 10 so that the remaining amount of the object to be stirred in the stirring drum can be detected. The limit switch 30 is actuated, and the remaining amount of the object to be stirred in the stirring drum can be easily determined. Replenishment of the object to be stirred can be performed easily and accurately without skill, and work efficiency is improved. The stirring operation of the object to be stirred can be performed. In addition, the remaining amount detecting device can be configured in a simple, relatively small and compact form, has excellent durability, can be provided at a low cost, is economically excellent, and is easy to automate the mixer. This is optimal as a device for detecting the remaining amount of the agitated material.

Further, the use of the springs 5 having different thicknesses (diameters of wire rods, outer diameters of coils), lengths and the like (using springs 5 having different elastic forces) makes it possible to detect stirring in the stirring drum that can be detected. You can easily set and change the remaining amount of goods. In addition, by changing the number of the springs 5, it is possible to easily set and change the remaining amount of the object to be stirred in the stirring drum that can be detected.

In particular, since the sprocket 15 for transmitting the driving torque of the rotating shaft 26 to other stirring blades is fixed to the driving side joint body A, the driving torque of the rotating shaft 26 is transmitted from the sprocket 15. It can be easily taken out. That is, the rotational force of the driving-side joint body A can be reliably and easily transmitted to other stirring blade bodies via the chain 20 wound around the sprocket 15.

In the remaining amount detecting device according to the second aspect, the locking joint 1A of the driving joint A and the locking protrusion 1b of the driven joint B are provided with the driving joint A and the driven joint. The arcuate concave surfaces 3a and 3b are respectively formed to coincide with the rotation center of the body B, while the arcuate concave surfaces of the locking projections 1a and 1b are coincident with the rotation centers of the driving joint A and the driven joint B. Since a substantially cylindrical center ring C slidingly in contact with 3a and 3b is provided, the center of the locking projection 1a of the driving joint A and the center of the locking projection 1b of the driven side coupling B are centered. Are surely coincident with each other, and the driving joint A and the driven joint B swing smoothly. That is, the rotational force of the driving joint A can be transmitted to the driven joint B in a well-balanced manner, and the elastic force of the spring 5 can be smoothly exerted. In addition, even if a strong external force acts on the locking projection 1a of the driving-side joint body A and the locking projection 1b of the driven-side joint body B due to the interior of the center ring C, the center is maintained. There is no danger of displacement or deformation, and the durability is excellent.

[Brief description of the drawings]

FIG. 1 is a partially omitted exploded perspective view illustrating a remaining amount detecting device of the present invention.

FIG. 2 is a vertical side view illustrating the remaining amount detecting device of the present invention.

FIG. 3 is a partially omitted vertical front view illustrating the remaining amount detecting device of the present invention.

FIG. 4 is a partially omitted vertical front view illustrating the remaining amount detecting device of the present invention.

[Explanation of symbols]

Reference Signs List A Drive joint body B Driven joint body C Center ring 1a Locking convex portion 1b Locking convex portion 2a Spring accommodating portion 2b Spring accommodating portion 3a Arc concave surface 3b Arc concave surface 5 Spring 6 Spring lid 7 Snap ring 10 Operator 11 Rocking Moving piece 12 Swinging piece 13 Axis 15 Sprocket 16 Insertion hole 17 Insertion hole 18 Bolt 19 Nut 20 Chain 25 Rotation axis 26 Rotation axis 30 Limit switch

Claims (2)

[Utility model registration claims] 1. Mixing seed and the like into cement, sand and water, or concrete, mortar, etc., which are stirred and kneaded by adding gravel or the like thereto, or a greening soil for planting lawns, flowers, etc. To be stirred, such as a greening base material,
In a mixer configured to be able to stir by a rotating operation of a stirring blade built in a stirring drum, a driven-side joint fixed to a rotating shaft connected to the stirring blade, and driven and rotated by being appropriately connected to a power machine. A driving-side joint body fixed to the rotating shaft; a sprocket for transmitting the driving torque of the rotating shaft to another stirring blade body is fixed to the driving-side joint body; On the opposing surfaces of the joint body, locking projections are provided respectively, and the locking projections are provided so as to alternately mesh with leaving a clearance space, so that the driving side joint body and the driven side joint body are within a predetermined range from each other. The spring joints are formed on the locking projections of the driving-side joint body and the driven-side joint body so that the spring accommodating parts are slightly swingable. The coiled spring is housed and the The rolling force is transmitted to the driven-side joint body while compressing the spring. On the other hand, both ends of the hinge-shaped actuator are provided on the locking protrusion of the driving-side joint body and the locking protrusion of the driven-side joint body. The central portions of the operator are formed so that the central portion of the operator gradually projects as the engagement convex portion of the driving joint and the engagement convex portion of the driven side joint approach each other. A limit switch was placed on the rotation trajectory, and the operator rocked in accordance with the amount of elastic deformation of the spring due to the rotation of the driving-side joint body, and the stirring resistance of the object to be stirred by the stirring blades became a predetermined value or less. The remaining state of the object to be stirred in the mixer is detected by detecting the state of protrusion of the central portion of the operator with a limit switch to detect the remaining amount of the object to be stirred in the stirring drum. apparatus. 2. An arcuate concave surface conforming to the rotation center of the driving-side joint body and the driven-side joint body is formed in each of the locking projection of the driving-side joint body and the locking projection of the driven-side joint body. 2. The mixer according to claim 1, further comprising a substantially cylindrical center ring that matches the center of rotation of the driving-side joint body and the driven-side joint body and that slides on the arc-shaped concave surface of the locking projection. A device for detecting the remaining amount of the object to be stirred.