JP3053519U - A device for detecting the remaining amount of objects to be stirred in a mixer - Google Patents

Abstract

(57) [Summary] [Problem] The remaining amount of an object to be stirred can be easily and accurately determined.
Provided is a remaining amount detection device that has good work efficiency, is easy to use, can realize smooth and accurate operation, has a simple configuration, is compact, is easy to automate, has excellent durability, is inexpensive, and is economical. SOLUTION: A sprocket 6 and a spring pressing body 10 are fixed to a driving side joint body A, a spring accommodating portion 16 is provided in a driven side joint body B, and an elastic spring 15 is accommodated therein. The swing link 19 is swingably mounted, and a limit switch 25 which can be pressed by the operation projection 20 of the swing link 19 is arranged on the stirring drum 1.
The rotational force of the driving-side joint body A is transmitted to the driven-side joint body B via the elastic spring 15 compressed by the spring pressing body 10, and the swing link 19 swings according to the amount of elastic deformation of the elastic spring 15. Then, the operation protrusion 20 comes into contact with the limit switch 25 to 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 added with gravel and the like to stir and knead them, as well as seeds, etc. for planting soil for planting lawns, flowers, etc. When the material to be stirred, such as a greening base material, which is mixed and stirred, is stirred by the rotation of the stirring blades provided inside the stirring drum and fed, the amount of the material to be stirred in the stirring drum is small. The present invention relates to a device for detecting the remaining amount of an object to be agitated in a mixer capable of automatically detecting the amount of the object to be stirred.

[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, the present invention simplifies the configuration of the remaining amount detection device that is easier to use, realizes smoother and more accurate operation, can clearly determine the replenishment time of the stirring target, and can efficiently perform the stirring operation of the stirring target. It was devised so that it could be provided to.

[0005]

[Means for Solving the Problems]

 Thus, in the remaining amount detecting device according to the first aspect, concrete, mortar, etc., which are mixed with cement by adding sand and water, or gravel or the like to the cement, turf, grass, etc. It is configured such that an object to be stirred, such as a greening base material, which is mixed with seeds and the like in a greening soil for vegetation to be vegetated, can be stirred by a rotating operation of a stirring blade body provided inside the stirring drum 1. In this mixer, a driven-side joint body B fixed to the rotating shaft 2 connected to the stirring blade body and a driving-side joint body A fixed to the rotating shaft 5 driven and rotated by being appropriately connected to the prime mover 3 are provided. A sprocket 6 for transmitting the driving torque of the rotating shaft 5 to the stirring blades of the other stirring drum 1 is fixed to the driving-side joint A, and a spring pressing member is fixed to the driving-side joint A. 10 is fixed, and the spring housing 1 is attached to the driven-side joint body B. And the elastic spring 15 compressed by the spring pressing body 10 is accommodated in the spring accommodating portion 16, while the driving side joint body A is capable of swinging the swing link 19 via the link mounting shaft 21. In addition, one end of the swing link 19 is connected to the spring accommodating portion 16, and an operating projection 20 is protruded from the other end of the swing link 19. A limit switch 25 is disposed on the stirring drum 1 so that the rotational force of the driving-side joint body A is transmitted to the driven-side joint body B via the elastic spring 15 compressed by the spring pressing body 10. The oscillating link 19 oscillates in accordance with the amount of elastic deformation corresponding to the compressive force applied to the elastic spring 15, and the stirring resistance of the object to be stirred by the stirring blade body is equal to or less than a predetermined value. When it becomes, actuating projection 20 of the swing link 19 contacts the lever 26 of the limit switch 25, the remaining amount of the agitation of the stirring drum 1 is adopted means be configured to be detected.

In the remaining amount detection device according to the second aspect, a relatively large-diameter base portion A2 is formed on the driving joint A, and a plurality of spring pushers are provided near the outer peripheral edge of the base portion A2. The pressure body 10 is provided, and the plurality of spring pressing bodies 10 and the spring accommodating portions 16 are arranged at equal intervals along the rotation direction of the driving side joint body A and the driven side joint body B. Means for arranging a plurality of elastic springs 15 interposed between the portions 16 along the rotation direction of the driving joint A and the driven joint B is adopted.

[0007]

[Embodiment of the invention]

 Hereinafter, the present invention will be described with reference to illustrated examples. The remaining amount detection device of the present invention is used for seeding cement, sand and water, or concrete, mortar, etc., which are stirred and kneaded by adding gravel, etc. to these, or planting soil for planting lawns, flowers, etc. Provided on a mixer (or a spraying machine) configured to be able to stir an object to be stirred, such as a greening base material, which is mixed by mixing with a rotating blade of a stirring blade provided inside the stirring drum 1. It is.

For example, a mixer (or a spraying machine) shown in the figure puts an object to be stirred into an upper stirring drum 1 provided with a hopper, and agitates the object to be stirred in an upper stirring drum 1. The material to be stirred is stirred into the stirring drum 1 in the lower portion, and the material to be stirred is stirred by the stirring blade in the lower stirring drum 1. The object to be stirred at the provided discharge port portion can be smoothly pumped out of the stirring drum 1 by the rotational movement of the stirring blade body or the air pressure applied to the inside of the stirring drum 1. At this time, the driving force of the prime mover 3 (or the driving force passing through the speed reducer 4) such as an engine or a motor is agitated in the lower stirring drum 1 via the prime mover joint A and the follower joint B. It is configured to be transmitted to the impeller and to the stirring impeller in the upper stirring drum 1 via a sprocket 6 and a chain 7 fixed to the driving joint A (see FIG. 1).

[0009] The remaining amount detecting device of the present invention includes a key at the tip of the rotating shaft 2 (or the tip of the rotating shaft of the stirring blade) connected to the stirring blade in the lower stirring drum 1. A driven side joint body B provided with a boss portion B1 fixed through the like, and a boss portion A1 fixed through a key or the like to a tip portion of a rotating shaft 5 which is connected to the prime mover 3 and driven to rotate. And a sprocket 6 for transmitting the driving torque of the rotating shaft 5 to the stirring blades of the upper stirring drum 1 with bolts and nuts. A spring pressing body 10 is fixed to the base portion A2 of the driving joint body A via a bolt, and a spring accommodating portion 16 is provided in the driven joint body B, and a spring pressing member is provided. Substantially coil compressed by body 10 A spring-like elastic spring 15 is accommodated in a spring accommodating portion 16, while a swing link 19 is swingably attached to a base portion A2 of the driving joint A via a link mounting shaft 21. One end of the dynamic link 19 is connected to the spring accommodating portion 16 (for example, connected to a connecting piece 18 that is swingably attached via a connecting pin to a protruding piece protruding from the spring accommodating portion 16 via a connecting pin). ), A substantially rod-shaped operating projection 20 is protruded from the other end of the swing link 19, and a limit switch 25 having a lever 26 which can be pressed by the operating projection 20 is disposed on the stirring drum 1; The rotation force of the body A is configured to be transmitted to the driven-side joint body B via the elastic spring 15 compressed by the spring pressing body 10, and the compression applied to the elastic spring 15 The swing link 19 swings in accordance with the amount of elastic deformation corresponding to the amount of elastic deformation, and when the stirring resistance of the object to be stirred by the stirring blade body of the lower stirring drum 1 becomes equal to or less than a predetermined value, the swing link 19 is rotated. The operation projection 20 comes into contact with the lever 26 of the limit switch 25 so that the remaining amount of the object to be stirred in the stirring drum 1 can be detected.

In the remaining amount detecting device of the present invention, the base portion A2 of the driving side joint body A is formed to have a relatively large diameter, and a plurality of spring pressing members 10 are provided near the outer peripheral edge of the base portion A2. A plurality of spring pressing bodies 10 and spring accommodating portions 16 are arranged at equal intervals along the rotation direction of the driving side joint body A and the driven side joint body B, and are interposed between the spring pressing bodies 10 and the spring accommodating sections 16. A plurality of elastic springs 15 are arranged along the rotation direction of the driving-side joint body A and the driven-side joint body B.

The driving-side joint body A is composed of a boss A1 securely and stably fixed to the rotating shaft 5 and a substantially flange-shaped base A2 connected to the boss A1. A substantially ring-shaped sprocket 6 is fixed to the outer peripheral portion via a bolt, a fixing ring A3, or the like. The driving joint A may have a structure in which the boss portion A1 and the base portion A2 are separated from each other and are fixed by welding means, or the boss portion A1 and the base portion A2 may be integrated. It may be configured. Incidentally, the fixing ring A3 constitutes a part of the base portion A2, and is provided so that the sprocket 6 can be fixed stably and firmly. The spring pressing body 10, the link mounting shaft 21 and the like are fixed to the main body (see FIGS. 2 and 3).

The driven-side joint body B includes a boss B1 securely and stably fixed to the rotating shaft 2, and a substantially flange-shaped base B2 connected to the boss B1. A projecting portion projecting outward is provided (fixed) on the outer peripheral portion, and a substantially box-shaped spring accommodating portion 16 which is partially open is provided on the projecting portion (see FIGS. 2 and 3). In addition, the driven side joint body B may be one in which the boss portion B1 and the base portion B2 are separated from each other and fixed by welding means, or the boss portion B1 and the base portion B2 are integrally formed. It may be what you did.

The spring pressing member 10 fixed to the base portion A2 (fixing ring A3) of the driving joint A is fixed by bolts or the like and arranged at a position facing the open portion of the spring accommodating portion 16. Have been.

The elastic spring 15 is formed such that its base is accommodated in the spring accommodating portion 16, and its leading end projects outward from the open portion of the spring accommodating portion 16. A pressing body receiver 17 is mounted on the distal end portion of the elastic spring 15. The pressing body receiver 17 is in contact with the spring pressing body 10, and the pressing force of the spring pressing body 10 is evenly applied to the elastic spring 15. It is provided in such a way that it can be transmitted in a reliable manner.

The swing link 19 has a substantially L-shaped plate shape in the illustrated example, and a corner portion thereof is mounted on a link mounting shaft 21 fixed to the driving side joint body A, and a base end portion of the swing link 19 is provided. And a protruding piece protruding from the spring accommodating portion 16 are connected via a connecting piece 18. That is, when the spring pressing body 10 approaches the spring accommodating portion 16 against the elastic force of the elastic spring 15, the swing link 19 is moved so that the operation projection 20 at the tip portion thereof faces the rotation center of the driving rotating body. When the spring presser 10 moves away from the spring accommodating portion 16 due to the elastic force of the elastic spring 15, the swinging link 19 swings so that the operating projection 20 at the distal end thereof moves away from the rotation center of the driving rotating body. At this time, the operation projection 20 is configured to contact the lever 26 of the limit switch 25.

The limit switch 25 is fixed to a movable plate 28 movably mounted on a base frame 27 fixed to the stirring drum 1. The movable plate 28 is rotatably mounted on the base frame 27. The attached screw rod 29 is screwed. That is, when the screw rod 29 is rotated by rotating the knob 30, the limit switch 25 moves together with the movable plate 28, so that the distance between the operation projection 20 and the lever 26 can be easily adjusted. (See FIG. 2).

Incidentally, the specific configuration, shape, and arrangement position of the remaining amount detection device, the specific configuration, shape, dimensions, and material of the driving-side joint body A, means for fixing to the rotating shaft 5, and specific examples of the boss A1 Configuration, shape, dimensions, material, specific configuration, shape, dimensions, material, fixing ring A3 specific configuration, shape, dimensions, material, specific configuration, shape, dimensions of driven side joint body B Law, material, means for fixing to the rotating shaft 2, specific configuration, shape, dimensions, and material of the boss B1, specific configuration, shape, dimensions, and material of the base B2, specific configuration, shape, and dimensions of the sprocket 6 , Material, specific fixing means to the driving-side joint body A, specific configuration, shape, dimensions, material, arrangement position, number, fixing means to the driving-side joint body A of the spring pressing body 10, Specific configuration, shape, dimensions, material, number, spring housing 1 6, the specific configuration, shape, dimensions, and material of the pressing body receiver 17, the specific configuration, shape, dimensions, material, and the swing link 19 of the connecting piece 18. Specific configuration, shape, size, material, mounting means to the driving side joint body A, specific configuration, shape, dimensions, arrangement position of the operation projection 20, specific configuration, shape, dimensions of the link mounting shaft 21, Material, disposition position, specific fixing means to the driving side joint body A, specific configuration, shape, size, disposition position of the limit switch 25, specific configuration, shape, dimensions of the lever 26, Specific configuration, shape, size, material, specific fixing means to the stirring drum 1, specific configuration, shape, size, material of the moving plate 28, specific mounting means to the base frame 27, specific of the screw rod 29 The specific configuration, shape, dimensions, material, etc. In which appropriately it can be set freely without being limited to such a 示例.

The remaining amount detecting device of the present invention is configured as described above. Next, an example of use will be described. First, an object to be stirred is put into the upper stirring drum 1 from a hopper. Next, the prime mover 3 is appropriately operated to rotate the rotary shaft 5 via the speed reducer 4 to rotate the prime mover-side joint body A. Then, the stirring blade body in the upper stirring drum 1 rotates via the sprocket 6 and the chain 7 fixed to the driving side joint body A to stir the object to be stirred. At this time, the rotational force of the driving-side joint body A is transmitted from the spring pressing body 10 via the elastic spring 15 to the spring accommodating portion 16 and transmitted to the driven-side joint body B 1. Is transmitted to the stirring blade body in the stirring drum 1. The object to be stirred in the upper stirring drum 1 is introduced into the lower stirring drum 1 and is stirred, and the stirring drum 1 is rotated by the rotational movement of the stirring blades and the air pressure applied to the stirring drum 1. From the outside gradually.

When there are many objects to be stirred in the lower stirring drum 1, the stirring resistance of the stirring blade body is large, so that the spring pressing body 10 elastically compresses the elastic spring 15, and The rotational force of the driving side joint body A is transmitted to the driven side joint body B via the compressed elastic spring 15. At this time, the operating projection 20 at the tip of the swing link 19 is in a swinging state approaching the rotation center of the driving rotary body, and the operating projection 20 does not contact the lever 26 of the limit switch 25. . In some cases, the spring pressing body 10 may elastically compress the elastic spring 15 and come into direct contact with the open peripheral portion of the spring housing 16.

Next, when the object to be stirred is fed from the discharge port at the bottom of the lower stirring drum 1 and decreases, the stirring resistance of the stirring blade body gradually decreases. The length of the elastic spring 15 itself changes (increases) due to the elastic restoring force. At this time, the operating projection 20 at the tip of the swing link 19 is in a swinging state gradually separated from the rotation center of the driving rotator, and the operating projection 20 comes into contact with the lever 26 of the limit switch 25 and the stirring drum The operator is notified that the amount of the object to be stirred in 1 is not more than a predetermined amount (in some cases, the operation of the prime mover 3 is appropriately stopped).

The detected amount of the object in the stirring drum 1 can be easily changed by moving the limit switch 25 (lever 26) by rotating the knob 30. . In other words, fine adjustment can be easily performed even on the objects to be stirred having different specific gravities.

Incidentally, the remaining amount detecting device of the present invention can be set in the upper stirring drum 1.

[0023]

[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 or the like into the cultivated soil by rotating a stirring blade body provided inside the stirring drum 1. A driven-side joint body B fixed to the rotating shaft 2 connected to the blade body; and a driven-side joint body A fixed to the rotating shaft 5 driven and rotated by being connected to the prime mover 3 as appropriate. A sprocket 6 for transmitting the driving torque of the rotating shaft 5 to the stirring blade body of another stirring drum 1 is fixed to the body A, and a spring pressing body 10 is fixed to the driving-side joint body A, A spring housing 16 is provided in the side joint body B. In both cases, the elastic spring 15 compressed by the spring pressing body 10 is accommodated in the spring accommodating portion 16, while the oscillating link 19 is oscillated on the driving joint A via a link mounting shaft 21. The swing link 19 is attached to one end of the swing link 19 and connected to the spring accommodating portion 16, and the other end of the swing link 19 is provided with an operating projection 20, which has a lever 26 which can be pressed by the operating projection 20. The limit switch 25 is disposed on the stirring drum 1, and the rotational force of the driving joint A is transmitted to the driven joint B via the elastic spring 15 compressed by the spring pressing body 10. When the swing link 19 swings in accordance with the amount of elastic deformation corresponding to the compressive force applied to the elastic spring 15, the stirring resistance of the object to be stirred by the stirring blade body becomes equal to or less than a predetermined value. In addition, since the operation protrusion 20 of the swing link 19 comes into contact with the lever 26 of the limit switch 25 and the remaining amount of the object to be stirred in the stirring drum 1 can be detected, the movement of the operation protrusion 20 limits the operation. When the lever 26 of the switch 25 is operated, the remaining amount of the object to be stirred in the stirring drum 1 can be easily and accurately determined, and anyone can replenish the object to be stirred without skill. A highly efficient stirring operation of the object to be stirred can be performed. Thus, it is easier to use, can achieve smoother and more accurate operation, has a simpler structure, can be constructed relatively compact, is easier to automate, is more durable, is less expensive, is more economical, and is easier to use in mixers. This is optimal as a device for detecting the remaining amount of the agitated material.

Further, the rotation force of the driving-side joint body A is configured to be transmitted to the driven-side joint body B via the elastic spring 15 compressed by the spring pressing body 10, and is applied to the elastic spring 15. When the oscillating link 19 oscillates in accordance with the amount of elastic deformation corresponding to the applied compressive force, and the agitation resistance of the object to be agitated by the agitating blade body falls below a predetermined value, the operating projection of the oscillating link 19 20 is in contact with the lever 26 of the limit switch 25 so that the remaining amount of the object to be stirred in the stirring drum 1 can be detected, so that the thickness (diameter of the wire, outer diameter of the coil), length, etc. By using the elastic springs 15 (using elastic springs 15 having different elastic forces), it is possible to easily set and change the remaining amount of the object to be stirred in the stirring drum 1 that can be detected.

In particular, a sprocket 6 for transmitting the driving torque of the rotating shaft 5 to the stirring blade of the other stirring drum 1 is fixed to the driving-side joint body A, so that the driving torque of the rotating shaft 5 is reduced. The sprocket 6 can be easily taken out. That is, the rotational force of the driving-side joint body A can be reliably and easily used as the driving force of the stirring blade of the other stirring drum 1 via the chain 7 wound around the sprocket 6. Moreover, the configuration is simple.

Further, in the remaining amount detecting device according to the second aspect, a relatively large-diameter base portion A2 is formed on the driving-side joint body A, and a plurality of spring pressing members 10 are provided near the outer peripheral edge of the base portion A2. A plurality of spring pressing bodies 10 and spring housings 16 are arranged at regular intervals along the rotation direction of the driving joint body A and the driven joint body B, and between the spring pressing body 10 and the spring housing sections 16. Since the plurality of elastic springs 15 to be interposed are arranged along the rotation direction of the driving side joint body A and the driven side joint body B, the rotational force of the driving side joint body A is transmitted to the driven side joint body B in a well-balanced manner. As a result, the elastic force of the elastic spring 15 can be smoothly exerted.

By arranging a large number of elastic springs 15, the load on one elastic spring 15 is reduced, the durability of the elastic spring 15 is increased, and the large rotation of the driving side joint body A is achieved. The force can be stably and reliably transmitted to the driven-side joint body B. In addition, by changing the number of the elastic springs 15, the remaining amount of the object to be stirred in the stirring drum 1 that can be detected can be easily set and changed.

In particular, since a relatively large-diameter base portion A2 is formed on the driving-side joint body A and a plurality of spring pressing members 10 are provided near the outer peripheral edge of the base portion A2, the elasticity of the elastic springs 15 is increased. The change appears remarkably, and the remaining amount of the substance to be stirred in the stirring drum 1 can be detected more accurately.

[Brief description of the drawings]

FIG. 1 is a schematic side view of an entire spraying machine showing an example of mounting a remaining amount detecting device of the present invention.

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

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

[Explanation of symbols]

REFERENCE SIGNS LIST 1 stirring drum 2 rotating shaft 3 prime mover 4 reduction gear 5 rotating shaft A driving joint body A1 boss A2 base A3 fixing ring B driven joint B1 boss B2 base 6 sprocket 7 chain 10 spring pressing body 15 elastic spring Reference Signs List 16 spring receiving portion 17 pressing body receiving 18 connecting piece 19 swing link 20 operating protrusion 21 link mounting shaft 25 limit switch 26 lever 27 base frame 28 moving plate 29 screw rod 30 knob

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 body built in a stirring drum, a driven-side joint body fixed to a rotating shaft connected to the stirring blade body and appropriately driven and rotated by being connected to a motor. A driving-side joint body fixed to the rotating shaft, wherein the driving-side joint body fixes a sprocket for transmitting the driving torque of the rotating shaft to the stirring blade body of another stirring drum; In the following, a spring pressing body is fixed, the driven-side joint body is provided with a spring accommodating section, and an elastic spring compressed by the spring pressing body is housed in the spring accommodating section. A swing link is swingably mounted via a link mounting shaft, one end of the swing link is connected to the spring accommodating portion, and an operation projection is protruded from the other end of the swing link. Therefore, a limit switch having a lever which can be pressed is arranged on the stirring drum, and the rotational force of the driving joint is transmitted to the driven joint via an elastic spring compressed by the spring pressing member. When the swing link swings in accordance with the amount of elastic deformation corresponding to the compressive force applied to the elastic spring, and the stirring resistance of the object to be stirred by the stirring blade body falls below a predetermined value, the swing link A device for detecting the remaining amount of an object to be agitated in a mixer, wherein the operating projection of (a) contacts the lever of the limit switch to detect the amount of the object to be agitated in the stirring drum. 2. A relatively large-diameter base portion is formed on the driving-side joint body, and a plurality of spring pressing members are provided near an outer peripheral edge of the base portion. Are arranged at equal intervals along the rotation direction of the body and the driven-side joint body, and a plurality of elastic springs interposed between the spring pressing body and the spring accommodating portion are rotated in the rotation direction of the driving-side joint body and the driven-side joint body. 2. A device for detecting the remaining amount of an object to be stirred in a mixer according to claim 1, wherein the device is arranged so as to follow.