JP7244095B2 - cement dosing machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a cement injection machine that can safely and easily introduce cement into a cement mixer.

Workers manually put cement into the cement mixer. That is, a cement bag equivalent to 25 kg per bag is carried to the upper opening position of the mixer, and the cement is put into the mixer from the cement bag. Such work poses health concerns because the worker is exposed to a large amount of cement dust that is stirred up during loading.

Conventionally, there has been proposed a mixing and agitating device for reducing this cement charging work (Patent Document 1). In this device, a temporary receiver 30 for temporarily receiving cement is rotatably attached to the side of the mixer 2 , and the cement in the temporary receiver 30 is moved into the mixer 2 by the upright movement of the temporary receiver 30 . It is provided with a material charging device 3 for charging into.

Japanese Patent No. 3078059

However, the material loading device 3 of Patent Document 1 is configured such that a worker loads cement from a cement bag into the temporary storage container 30, raises the temporary storage container 30, and loads the cement into the mixer 2. . Therefore, there is a risk that a worker may be exposed to cement dust during the work of charging cement into the temporary receptacle 30 from the cement bag. Therefore, the conventional cement injection device 3 has not solved the problem of health during work.

Moreover, since this material charging device 3 is provided as a part of the mechanism of the mixing and stirring device for mixing sand and cement, it is necessary to provide the material charging device according to the configuration of the mixing and stirring device. That is, a rotary shaft 33 is provided at the upper end portion of the mixer 2, and the temporary receiver 30 is fixed to the rotary shaft 33 (see FIG. 1 in Patent Document 1). On the other hand, the side surface of the hopper scale 1 arranged on the upper part of the mixer 2 is provided with a projecting portion 12 for closing the cement inlet of the temporary receiver 30 when the temporary receiver 30 is erected. Synthetic rubber is pasted on the surface to prevent adhesion.

Therefore, the material charging device 3 mounted as a part of the mixing and stirring device must be configured to match the positions of the hopper scale 1 and the mixer 2 .

Furthermore, Patent Document 1 discloses a configuration in which the material charging device is a single device (see FIG. 3 in Patent Document 1). This single material charging device uses a stand 40 on which two support columns 40a are erected, and a rotating shaft 33 is bearing at the tip portion of the supporting column 40a. 33 is rotatably controlled by a hydraulic or pneumatic cylinder 41 such that the temporary receiver 30 fixed to the rotating shaft 33 is rotatable.

Furthermore, another single material charging device is also shown (see FIG. 4 in Patent Document 1). In this device, a support column 42a erected on a frame 42 is used as a rack gear, and a bearing block 43 is provided along the support column 42a so as to move up and down. supporting a temporary receptacle 30 to be held. A hydraulic motor 45 controls the elevation of the bearing block 43 , and a hydraulic motor 44 controls the rotation of the rotary shaft 33 supported by the bearing block 43 .

In this way, when the material charging device is a single device, the rotating shaft is supported on the post so as to be independent from the mixing and stirring device, and the temporary container fixed to this rotating shaft is rotatable. had to set. Therefore, a space is required around the mixing and stirring device for installing the struts and frames, which makes it difficult to install the material charging device around the mixing and stirring device arranged in a limited space. . Moreover, there is also the inconvenience that the manufacturing cost of the material charging device increases due to the pillars and pedestals.

Therefore, the present invention was created to solve the above-mentioned problems, and when putting cement into the mixer, it is possible to put it extremely safely and easily attach it to the existing mixing stirring device or mixer as a retrofit. It is an object of the present invention to provide a cement injection machine capable of

In order to achieve the above object, the first means of the present invention is a cement injection machine for inserting cement into a cement mixer P. a moving housing 10, a cement placing section 20 provided in the housing 10 for placing cement together with the cement bag Q, and breaking through the cement bag Q placed on the cement placing section 20 and into the cement bag Q. Equipped with an air injection body 30 for injecting compressed air and a connection frame 40 detachably attached to the outer side of the opening of the mixer P, and fixing the casing rotation shaft 12 to the fixed end portion 11 of the casing 10 Then, the housing rotation shaft 12 is pivotally supported by the connection frame 40, the rotation of the rotation shaft 12 is controlled by the main cylinder 13 such as hydraulic pressure or pneumatic pressure, and the connection frame 40 is aligned with the opening of the mixer P. Then, the housing 10 is configured to be attached to the mixer P , and when the housing 10 is rotated upward, the cement drops from the cement bag Q toward the mixer P, and the air injection body 30 inserted into the cement bag Q. The construction is such that the cement remaining in the cement bag Q is discharged by the compressed air jetted from.

A second means is to provide a cover 21 for covering the cement bag Q placed on the cement placing portion 20 so as to be rotatable on the housing 10 so that the cement placing surface of the cement placing portion 20 can be opened and closed. It is provided so that it can be covered freely.

The air jet body 30 of the third means is erected on the cement placing portion 20 and has a sharp edge that pierces the cement bag Q by the weight of the cement in the cement bag Q when the cement bag Q is placed. It is provided with a distal end portion 31 and an injection pipe 33 having a substantially cylindrical shape to be inserted into the cement bag Q and having an injection port 32 for injecting compressed air on its side surface.

According to claim 1 of the present invention, when the housing 10 is rotated upward, the cement drops from the cement bag Q toward the mixer P, and the compressed air jetted from the air jet body 30 inserted into the cement bag Q pushes the cement into the cement. Since the cement remaining in the bag Q is discharged, the worker can put the cement into the mixer P from the cement bag Q without being exposed to any cement dust. As a result, extremely safe work from a health point of view has become possible. Moreover, since the casing 10 is attached to the mixer P through the connecting frame 40 that is aligned with the side surface of the opening of various mixers P, it can be easily attached to an existing mixing and stirring device afterward. became possible .

As in claim 2, the housing 10 is rotatably provided with a lid 21 for covering the cement bag Q placed on the cement placing portion 20, and the cement placing surface of the cement placing portion 20 is openable and closable. By providing the lid so as to cover the cement bag Q, the cement dust generated from the cement bag Q can be reduced as much as possible.

As in claim 3, the air injection body 30 is erected on the cement placing portion 20, and has a sharp tip portion 31 which pierces the cement bag Q by the weight of the cement in the cement bag Q when the cement bag Q is placed. and an injection pipe 33 having a substantially cylindrical shape to be inserted into the cement bag Q and having an injection port 32 for injecting compressed air on the side surface. The air injection body 30 can be inserted into the cement bag Q by simply placing the Q. Therefore, the direct work performed by the worker on the cement bag Q is only to open the cement discharge side of the cement bag Q after placing the cement bag Q on the cement placing portion 20, which is extremely safe and easy. It became possible to put the cement into the mixer P with a simple work.

In this way, according to the present invention, when cement is put into the mixer, it can be put in extremely safely, and it is possible to easily attach it to existing mixing and stirring devices and mixers as a retrofit. You have achieved your goal.

It is a side view which shows the use condition of this invention. It is a side view showing one example of the present invention. FIG. 4 is a side view showing a moving state of the housing of the present invention; FIG. 4 is a plan view showing a connecting frame of the present invention; FIG. 4 is a plan view showing a cement placing portion of the present invention; It is a side view which shows the movement state of the cover body of this invention. FIG. 4 is a side view showing the relationship between the cement placing portion and the air injection body of the present invention; 1 is a side view showing an embodiment of an air jet body of the present invention; FIG. FIG. 2 is a side cross-sectional view showing the cement placement part of the present invention; It is an enlarged front view showing the fall protection fence of the present invention.

The present invention is a cement injection machine that is attached to a cement mixer P and inserts cement from a cement bag Q into the mixer P. The configuration of the present invention comprises a housing 10, a cement placement section 20, and an air jet body 30 (see FIG. 1).

The housing 10 is a structural member mounted on the side of the opening of the mixer P, and is provided so as to rotate up and down from the bottom side of the mixer P to the upper side of the opening (see FIG. 1). The housing 10 has a connection frame 40 detachably attached to the outer side of the opening of the mixer P. As shown in FIG. By fitting the connecting frame 40 to the openings of various existing mixers P, the casing 10 is configured to be attached to the mixer P. As shown in FIG.

That is, the housing rotation shaft 12 is fixed to the fixed end portion 11 of the housing 10, and the housing rotation shaft 12 is pivotally supported by the connecting frame 40 (see FIG. 4). By controlling the rotation of the housing rotating shaft 12 by a main cylinder 13 such as hydraulic pressure or pneumatic pressure, the housing 10 fixed to the rotating shaft 12 is rotated toward the upper and lower sides of the mixer P. configuration (see FIGS. 2 and 3).

The illustrated connection frame 40 includes a frame main body 41 that connects the housings 10 and an auxiliary frame 42 that is fixed in alignment with the opening of the mixer P (see FIG. 4). The rotating shaft 12 and the main cylinder 13 are supported by the frame body 41 . On the other hand, the auxiliary frame 42 is formed in accordance with the opening of the mixer P, the mixing and stirring device, etc. to which the connecting frame 40 is attached.

The auxiliary frame 42 is, for example, slidably provided with respect to the frame main body 41 and configured to match the outer diameter of the opening of the mixer P (not shown). Alternatively, it is also possible to provide an auxiliary frame 42 matching the opening of each mixer P and the mixing/stirring device and fix it to the frame body 41 . In this way, the connecting frame 40 is attached to the existing mixer P or mixing and stirring device.

In addition, when the rotated housing 10 moves above the mixer P, the cement moves into the mixer P along the housing 10 (see FIG. 9). Therefore, the housing 10 includes a bottom plate 16 on which cement moves and a top plate 17 that covers the bottom plate 16 . Therefore, cement dust does not scatter while moving within the housing 10 .

The cement placement portion 20 is a portion provided in the housing 10, and the cement is placed on the cement placement portion 20 together with the cement bag Q (see FIG. 5). The illustrated cement placing portion 20 places two cement bags Q side by side.

In addition, the cement placing portion 20 is provided with a lid body 21 that covers the upper opening of the cement placing portion 20 so as to be openable and closable (see FIG. 6). That is, a lid rotating shaft 14 is supported on the housing 10, and the rotation of the lid body 21 connected to the lid rotating shaft 14 is controlled by a sub-cylinder 15 such as hydraulic pressure or pneumatic pressure, whereby the cement is placed. The opening of the portion 20 is covered with a lid 21 so as to be openable and closable. After the cement bag Q is placed on the cement placing portion 20, the lid 21 is closed and the housing 10 is rotated to pour the cement from the elevated cement placing portion 20 toward the opening of the mixer P. It is to be dropped (see FIG. 9).

At this time, there is a possibility that the cement bag Q may slide down from the cement placement portion 20 as the cement placement portion 20 rises. Therefore, the cement placement section 20 is provided with a slide-down prevention section 22 and a fall protection fence 23 (see FIG. 9).

The slip-preventing portion 22 shown in the figure has a projection shape that traverses the cement placing portion 20, and prevents the cement bag Q from slipping down even when the cement placing portion 20 is inclined (see FIG. 5). In addition, the anti-slip portion 22 can be changed to any anti-slip means such as disposing a non-slip material on the front surface of the cement placement portion 20 .

The fall protection fence 23 is a portion provided closer to the mixer P side than the slide-down prevention portion 22 (see FIG. 9). For example, even if the empty cement bag Q exceeds the anti-skid part 22, the empty cement bag Q is stopped by the fall protection fence 23, and the cement bag Q falls into the mixer P. prevent you from doing so. The illustrated fall protection fence 23 has a configuration in which a plurality of support plates 23A are arranged in parallel (see FIG. 10). Moreover, this fall protection fence 23 can also be changed to another configuration.

The air injection body 30 is an injection body for injecting compressed air into the cement bag Q (see FIG. 9). When the cement is placed on the cement placing portion 20 together with the cement bag Q, the cement bag Q is pierced by the weight of the cement, and compressed air is injected into the cement bag Q.

The illustrated air jet body 30 passes through the cement placing portion 20 (see FIG. 9) and has a tip portion 31 and a jet port 32 (see FIG. 8). Then, the compressed air from the compressor 50 is injected into the cement bag Q from the injection port 32 (see FIG. 6).

The tip portion 31 is a sharp portion that breaks through the cement bag Q with the weight of the cement (see FIG. 9). In the illustrated example, it has a conical shape, but it can be arbitrarily changed as long as it can break through the cement bag Q. FIG.

On the other hand, the injection port 32 is a portion for injecting compressed air into the cement bag Q, and is formed on the side surface of a substantially cylindrical injection pipe 33 continuing from the tip portion 31 (see FIG. 8). In the illustrated example, a large number of injection ports 32 are formed on the circumferential surface of the injection pipe 33 . Moreover, it is also possible to provide the injection pipe 33 so as to be rotatable and to inject compressed air from the injection port 32 of the rotating injection pipe 33 .

In this manner, the compressed air is injected from the air injection body 30 inserted into the cement bag Q, and the cement remaining in the cement bag Q is discharged by the compressed air (see FIG. 9). In the illustrated example, two air injection bodies 30 are provided side by side in accordance with the cement placing portion 20 on which two cement bags Q are placed side by side (see FIG. 7).

The present invention is not limited to the configuration shown in the drawings, and the configuration of the housing 10, the cement placement section 20, the air jet body 30, etc. may be freely changed within the scope of the present invention. can be done

P Mixer Q Cement Bag 10 Case 11 Fixed End 12 Case Rotating Axis 13 Main Cylinder 14 Lid Rotating Axis 15 Sub Cylinder 16 Bottom Plate 17 Top Plate 20 Cement Mounting Part 21 Lid Body 22 Slip-down Prevention Part 23 Drop Protection Fence 23A Support plate 30 Air injection body 31 Tip part 32 Injection port 33 Injection pipe 40 Connection frame 41 Frame main body 42 Auxiliary frame 50 Compressor

Claims (3)

In a cement injection machine for injecting cement into a cement mixer,
A housing that is attached to the side of the opening of the mixer and rotates in the vertical direction of the mixer, a cement placement section that is provided in the housing and holds the cement together with the cement bag, and is mounted on the cement placement section. An air injection body for breaking through the placed cement bag and injecting compressed air into the cement bag, and a connection frame detachably attached to the outside of the opening of the mixer,
The housing rotation shaft is fixed to the fixed end of the housing, the housing rotation shaft is supported by the connection frame, the rotation of the rotation shaft is controlled by a main cylinder such as hydraulic pressure or pneumatic pressure, and the connection frame is , the housing is configured to be attached to the mixer by fitting it to the opening of the mixer ,
When the housing is rotated upward, the cement drops from the cement bag toward the mixer, and the cement remaining in the cement bag is discharged by compressed air ejected from an air ejector inserted into the cement bag. A cement dosing machine characterized by: 3. A lid body is rotatably provided on the housing to cover the cement bag placed on the cement placement part, and the cement placement surface of the cement placement part is covered so as to be openable and closable. 1. The cement injection machine according to 1. The air injection body is provided upright on the cement placing portion, and has a sharp tip that pierces the cement bag by the weight of the cement in the cement bag when the cement bag is placed, and is inserted into the cement bag. 2. The cement injection machine according to claim 1, further comprising an injection pipe having a substantially cylindrical shape and having an injection port for injecting compressed air on a side surface thereof.

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