JPH06312364A - Transfer device for concrete specimen - Google Patents

Abstract

PURPOSE:To automatically transfer multiple concrete specimens without any contact with each other. CONSTITUTION:In a transfer device 1, which transfers a cylindrical concrete specimen W in the horizontal direction, a transferring roller chain having large rollers 2a is provided, the concrete specimen W is mounted with lying on its side between rollers 2a, 2a adjacent to each other longitudinally in the transfer direction of the roller chain 2, and under this condition, the roller chain 2 is driven rotationally so as to transfer plural concrete specimens W-W while holding their positions to be in no contact with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transporting device for transporting a cylindrical concrete specimen in a horizontal direction, and concretely, for example, the concrete specimen extends up to above the setting table of the end face polishing machine. The present invention relates to a concrete specimen transport apparatus for transporting concrete specimens one by one and setting the concrete specimens one by one on the set table while the concrete specimens are laid sideways.

[0002]

2. Description of the Related Art Generally, a cylinder-shaped concrete specimen is used as a test piece used for concrete strength test and the like.
According to S), since it is a test piece, chipping of its corners, scratches and damages on the main body are not allowed. Therefore, handling of this specimen should be carried out with sufficient care, and for this reason, in the past, this specimen was often set by hand when it was set on the end face polishing machine. However, since this test piece is a concrete pillar block, it is heavy by hand (about 4 kg for a test piece of φ100 × 200 mm and about 13 kg for a test piece of φ150 × 300 mm), and therefore its transportation work is sometimes difficult. Accidents such as dropping the product or pinching the fingers of workers often occurred. Therefore, in order to solve this problem, the applicant of the present application proposed in Japanese Patent Application No. 3-108589 a device for automatically supplying this specimen to an end face polishing machine. According to this apparatus, the specimen transported to a certain position could be automatically set on the end face polishing machine without damaging it.

[0003]

However, according to the apparatus, there is no problem in transferring from the certain position (specifically, the standby position of the conveyor) to the set table of the end face polishing machine. The specimens are in contact with each other before reaching the standby position of the transport conveyor, and there is a possibility that the specimens may be damaged at this stage. Further, there is a similar problem at the stage of stocking the specimen taken out from the set table after the polishing process is completed.

[0004] Therefore, an object of the present invention is to provide a concrete specimen transporting apparatus capable of transporting a plurality of concrete specimens to a predetermined position without contacting each other in a state where the concrete specimens are laid sideways.

[0005]

Therefore, according to the first aspect of the present invention, there is provided a conveyor device for horizontally conveying a concrete specimen, which is a cylindrical body, and a roller chain for conveyance having a large roller. The concrete specimen is placed between the rollers adjacent to each other in the front and rear of the roller chain in the conveying direction, and the roller chain is rotatably driven in this state to prevent a plurality of concrete specimens from contacting each other. We have created a concrete specimen transporting device that is characterized in that it can be transported while being held in a fixed position.

According to the second aspect of the present invention, in addition to the above structure, a part of the base for receiving the roller chain is provided with a cutout portion to loosen the tension when the roller chain is stopped. A part of the roller chain is hung downward through the cutout portion, and one concrete specimen mounted on the hung part is moved downward by its own weight, and the one of the above-mentioned ones is moved during the downward movement. A concrete specimen transporting device was created by adding a configuration capable of transferring one concrete specimen from the roller chain to another part.

[0007]

According to the structure of claim 1, the concrete specimen is placed in a state in which the concrete specimen is laid sideways and is fitted in a state in which it is fitted between the rollers adjacent to each other in the front-rear direction of the roller chain. The specimen is immovable before and after the roller chain in the transport direction. Therefore,
By placing concrete specimens one by one between adjacent rollers in front and rear at appropriate intervals, and by rotating the roller chain in this state, multiple concrete specimens are conveyed without leaving a gap between them and contacting each other. To be done.

According to the second aspect of the invention, the concrete specimens that have been conveyed in a state where they do not contact each other as described above are set one by one, for example, on the set table of the end face polishing machine. That is, since a part of the base that can receive the roller chain has a missing part,
The roller chain is not received from below at this missing part. Therefore, when one concrete specimen is transported to this missing part, the rotation drive of the roller chain is stopped and the tension is loosened, and a part of the roller chain is affected by its own weight and the own weight of the concrete specimen. It hangs downward from the above-mentioned missing portion, so that this one concrete specimen moves downward. If, for example, a setting table of the end face polishing machine is arranged below the missing portion, this one concrete specimen can be transferred from the roller chain to the setting table during the downward movement.

Then, during the polishing process, the roller chain is kept in a hanging state, and after the polishing process is completed, the tension of the roller chain is returned to the tension state. Then, a part of the roller chain hanging from the cutout portion moves upward while lifting the concrete specimen, whereby the set concrete specimen is taken out from the setting table. After the tension is set to a predetermined state, the roller chain is driven to rotate, so that the concrete sample is carried out from above the set table.

[0010]

Embodiments of the present invention will be described below with reference to FIGS. In this example, the transport device 1 described below
1 will be described as applied to an end surface polishing machine for a concrete specimen (hereinafter, simply referred to as “specimen W”). The end surface polishing machine main body 50 does not need to be changed in particular, so it will not be described in detail. However, this is a set table 51 for setting the sample W as shown in the figure, and the set sample W is fixed so as not to be displaced. Clamping devices 52, 53 and a disc-shaped grindstone 54 are provided. A V groove 51a is formed on the upper surface of the set table 51, and the sample W is inserted into the V groove 51a in a posture in which the sample W is laid sideways. The inserted sample W is clamped by the clamp device 52,
It is fixed by 53, and the grindstone 54 is pressed in this fixed state to polish the end surface of the sample W.

The carrying device 1 of the present embodiment is of a chain conveyor type, and a large number of specimens W are carried horizontally from the left side to the right side in the figure in a posture in which they are laid sideways. The set table 51 described above is arranged substantially in the center of the carrier device 1. The left side in the figure is the loading side and the right side in the figure is the unloading side with respect to the set table 51. Further, the carrying device 1 is roughly divided into a main conveyor 3 on the right side and a sub-conveyor 40 on the left side with A as a boundary in the drawing.
The set table 51 is arranged at a position midway. Therefore, a part of the main conveyor 3 on the left side of the set table 51 and the sub-conveyor 40 constitute a carry-in side, and a part of the main conveyor 3 on the right side of the set table 51 constitutes a carry-out side.

First, as shown in FIG. 2, the main conveyor 3 is attached to the upper surface of a base 55 of the end surface polishing machine main body 50 via brackets 56 and 57. As shown in FIG. 3 or FIG. 4, the main conveyor 3 includes bases 5 and 5 arranged in parallel with each other at regular intervals in front of and behind the set base 51 (right side and left side in FIG. 3). The roller chains 2 and 2 (not shown in FIG. 3, hereinafter simply referred to as “chain”) for transportation are mounted on both bases 5 and 5, respectively.

Both bases 5 and 5 have the same structure,
Upper and lower support frames 7 and 8 are attached inside the frame 6 having a U-shaped cross section in parallel along the longitudinal direction. The upper surface of the upper support frame 7 and the bottom surface of the frame 6 serve as guide surfaces on which the rollers 2a of the chain 2 roll, and the bottom surface side of the frame 6 serves as the return side.

As shown in FIG. 2, the upper support frame 7 is divided into a carry-in side (left side in the drawing) and a carry-out side (right side in the drawing) with respect to the set table 51, which is above the set table 51. The part to be deleted is missing. Then, between the front end portion (right end portion in the figure) of the carry-in side support frame 7 and the lower support frame 8, and between the rear end portion (left end portion in the figure) of the carry-out side support frame 7b and the lower support frame 8. Between them, inclined portions 7c and 7d are provided along the V groove 51a of the set table 51, respectively. The distance between the inclined portions 7c and 7d and the V groove 51a of the setting table 51 is set to be larger than the diameter of the roller 2a of the chain 2. Similarly, V-shaped reliefs 6a are formed in the front and rear walls of the frame 6 at the portions corresponding to the setting table 51 with a larger cut amount than the V groove 51a of the setting table 51.

As shown in FIG. 1, drive sprockets 9 and 9 for rotationally driving the chain 2 are rotatably attached to the right ends of the two bases 5 thus constructed as shown in the figure. Both sprockets 9 and 9 are integrally rotated by the drive motor 11 via the transmission chain 11a.

On the other hand, at the right ends of the two bases 5 in the figure, as shown in FIG. 3, a sprocket 10, 1 of a double type is provided via a shaft 10c which is supported in a spanning manner between the two bases 5, 5.
0 is rotatably supported, and both sprockets 1
The outer sprockets 10a of 0 are used as driven sprockets on the main conveyor 3 side, respectively. The inner sprockets 10b and 10b are used as sprockets on the side of the sub-conveyor 40, which will be described later.

Below the sprockets 10 and 10,
As shown in FIG. 2, a tension guide 12 having a semi-cylindrical shape is supported by a cylinder 13 so as to be movable in the vertical direction. This tension guide 12
The peripheral surface that forms the lower surface of is a rolling surface on which the roller 2a of the chain 2 rolls.

Reference numeral 14 in the drawing denotes an idler arranged immediately below the return side outlets of both bases 5 via the bracket 57. The idler 14 causes the chain 2 on the return side to move downward from the horizontal direction. Is transferred to.

Main conveyor 3 constructed as described above
In both bases 5 and 5, the chains 2 and 2 are stretched between the sprockets 9 and 10a, the tension guide 12 and the idler 14, respectively. Then, the cylinder 13 is operated in the retracting direction, and the tension guide 1
When 2 is moved downward, the tension of chain 2 is properly tensioned. When the tension is properly stretched, the chain 2 is stretched in a substantially straight state at the lacking portion between the support frames 7a and 7b as shown in FIG.

On the contrary, when the cylinder 13 is operated in the protruding direction and the tension sprocket 12 is moved upward, the tension of the chain 2 is released, so that the chain 2 moves between the support frames 7a and 7b as shown in FIG. At the missing portion of the chain, the chain 2 is in a state of being along the inclined surface portions 7c and 7d in this hanging state, so that each roller 2a is set in the V groove 51 of the setting table 51.
It is in a state of being located below a.

The chain 2 is an endless conveying roller chain that has been generally used in the past, and as shown in FIGS. 8 and 9, the pitch between the rollers 2a, 2a is 1
An inch (25.4 mm) one is used. Each roller 2a to 2a of the chain 2 is of a large diameter type and has a diameter protruding vertically from the holding plates 2b to 2b on both sides. Therefore, when the chain 2 rotates, each roller 2a rolls on the upper surfaces of the support frames 7a and 7b or the bottom surface of the frame 6.

Next, as shown in FIGS. 1 to 3, a sub-conveyor 40 is connected to the left end of the main conveyor 3 in the figure. This sub-conveyor 40 is provided for the purpose of extending the carry-in side in order to automatically supply a larger number of specimens W, and this sub-conveyor 40 also has a configuration similar to that of the base 5 of the main conveyor 3. Base 4
2, 42 are provided. As shown in FIG. 3, both bases 42, 42 are arranged in parallel at a slightly narrower interval than in the case of the main conveyor 3. However, both bases 42, 42
Is not provided with the lacking portion between the support frames 7a and 7b provided on the bases 5 and 5 and the inclined surface portions 7c and 7d, but the upper and lower support frames are provided continuously.

On both bases 42, 42, a chain 43 similar to the above-mentioned chain 2 is sprocket rotatably supported at the left end of the sprocket 10b and the base 42 as shown in FIG. It is hung with 44 with moderate tension. Since the sprocket 10b rotates integrally with the driven sprocket 10a on the main conveyor 3 side as described above, the sub-conveyor 40 is driven simultaneously when the main conveyor 3 is driven and simultaneously stopped when it is stopped. To do. Further, the chain 2 and the chain 43 rotate in the same direction at the same speed, so that the mounted sample W is continuously and smoothly conveyed from the sub conveyor 40 to the main conveyor 3.

The carrier device 1 of this example is constructed as described above. According to this structure, the carrier device 1 operates as follows, whereby the sample W is set on the end face polishing machine 50. It is supplied to the table 51. First, the transport device 1
In the stopped state (the stopped state of the drive motor 11), a large number of specimens W of the same size are placed on the loading side. The cylinder 13 operates toward the retracting side to move the tension guide 12
To position the chains 2 and 2 under proper tension.

As shown in FIGS. 3 and 4, the specimens W are laid sideways and placed in parallel in a posture of straddling between the chains 2 and 2. Here, as shown in FIG. 7, each sample W is placed between two rollers 2a, 2a adjacent to each other in the front-back direction of the chain 2 and 2 on both sides, so that each sample W is attached to the chain 2 with respect to the chain 2. And is held so as to be non-rollable before and after the conveyance direction.

Moreover, the respective specimens W are conveyed with a necessary and sufficient gap B between them as shown in the figure. That is, since the pitch of the chain 2 (pitch between the rollers 2a and 2a) is 1 inch, the gap B is about 1.6 when the diameter D of the sample W is 100 mm.
mm. In this case, the sample W is the roller 2a.
It is placed every 4 pitches. Further, as is clear from the figure, the gap B is obtained by "1 inch x number of rollers 2a pitch-diameter D of sample W". Similarly, sample W
Size is D = φ125mm, φ150mm, φ200
Even in the case of mm, proper gaps B are provided between the specimens W as shown in FIG.

Further, each sample W is placed on the holding plate 2b of the chain 2 with a gap C therebetween, and therefore each sample W is received and conveyed only by the four rollers 2a. The holding plate 2b is conveyed without coming into contact with it. The large number of specimens W placed on the carry-in side in this manner are conveyed with proper gaps B between each other and without contact with the holding plate 2b of the chain 2.

When the chain 2 is rotationally driven in the state where the sample W is placed as described above, each roller 2a rolls on the upper surfaces of the supporting frames 7a and 7b, so that the sample W is also rolled. It is transported while rotating. From this fact, the test piece W is smoothly conveyed in a state in which almost no frictional resistance is generated between the sample W and the chain 2 and the base 5 (support frames 7a and 7b), and almost no frictional resistance occurs. Does not occur, and the chain 2 is smoothly rotated. Therefore, the drive motor 11 described above is relatively small in size, which is economical.

The rotation drive of the chain 2 is stopped when one of the test pieces W conveyed in such a state reaches directly above the set table 51 as shown in FIG. After that, the cylinder 13 is operated in the protruding direction to slowly move the tension guide 12 upward. Then, the tension of the chain 2 is relaxed, so that the sample W slowly moves downward by its own weight as shown in FIG. Then, during this movement, the sample W is slowly transferred from the chain 2 into the V groove 51a of the setting table 51.
The tension of the chain 2 is sufficiently relaxed, and the chain 2 is in a state along the inclined surface portions 7c and 7d. In this state, each roller 2a is located below the V groove 51a of the setting table 51, and therefore the chain 2 is completely removed from the sample W.

When one sample W is set on the set table 51 in this way, the clamp devices 52 and 53 are operated to fix the sample W to the set table 51, and then the grindstone 54 is The sample W is pressed against the end surface and the end surface is polished.

When the polishing process is completed, the clamp device 5
The clamps 2, 53 are released, and the processed specimen W is unloaded. That is, the cylinder 13 is operated in the retracting direction and the tension guide 12 is returned downward, whereby the tension of the chain 2 is stretched to an appropriate value. Then, the portion of the chain 2 that hangs in the missing portion between the support frames 7a and 7b moves upward and returns to the straight state as shown in FIG. During this return, the chain 2 lifts the processed sample W from the set table 51 and moves the sample W upward. In this way, the sample W is transferred from the set table 51 to the chain 2. When the tension of the chain 2 is stretched to an appropriate value and the processed specimen W is lifted to the same level as the other specimens W, the drive motor 11 is operated again to move the chain 2 to the specimen W. Rotate only one pitch. As a result, the processed sample W is carried out from above the set table 51, while the sample W to be subsequently polished is carried above the set table 51. After that, in the same manner as above, the test piece W is set on the set table 5
It is set to 1 and the polishing process is repeated in the same manner.

As described above, the tension of the chain 2 is appropriately tensioned or, on the contrary, sufficiently loosened, the chain 2 is moved in the vertical direction at the lacking portion between the support frames 7a and 7b. It is possible to move the sample W in the vertical direction to set the sample W on the set table 51, and to take it out from the set table 51. At this time, by slowly moving the tension guide 12, the sample W is carefully set on the setting table 51.
And is slowly taken out from the setting table 51.

As described above, according to the transporting apparatus 1 of the present example, the sample W is carefully set on the set table 51 and taken out from the set table 51 as in the case of manual operation. Therefore, the sample W can be automatically supplied to the end surface polishing machine 50 without being damaged or chipped, and can be automatically carried out from the end surface polishing machine 50.

Further, the chain 2 is rotationally driven to provide a test piece W.
In transporting the specimens W, the specimens W are transported with a necessary and sufficient gap B between them, and are also transported without contacting the holding plate 2b of the chain 2, so that the specimens W are not damaged. No chipping will occur. In addition, as the chain 2, it suffices to use a commercially available roller chain for transportation as it is, and as described above, it is possible to carry out efficiently by using a roller having a pitch of 1 inch between the rollers 2a. Is effective.

Further, according to JIS, the test piece W used as a test piece has a diameter of 100 mm,
Several types of 25 mm pitch, such as 125 mm and φ150 mm, are specified. In the present invention, the roller pitch is 1 for each of the specimens W of these sizes.
It is to be noted that if the chain 2 which is inch is used for transportation, it can be transported without contacting each other with a necessary and sufficient gap B between the specimens W, W according to this. A large number of test pieces W of the same size can be transported at a high density without being scratched, and the transport apparatus 1 satisfying these functions can be provided at low cost.

As described above, in the present embodiment, as the embodiment of the invention described in claim 2, the conveying device 1 for supplying the concrete specimen W to the set table 51 of the end face polishing machine has been explained. Without limitation, the sub-conveyor 40 described above as an embodiment of the invention of claim 1.
As described above, if the roller chain 2 is simply rotated and driven, and if this is appropriately applied to a process in which a large number of concrete specimens W need to be conveyed, the concrete specimen W can be damaged without human labor. Can be conveyed to a predetermined position without giving. Also in this case, almost no frictional resistance is generated between the sample W and the roller chain and between the roller chain and the base, and therefore, it is possible to economically convey a long distance. Also, the roller pitch of the roller chain 2 does not necessarily have to be exactly 1 inch,
Depending on various factors such as the size of the concrete sample W, a different pitch may be appropriately applied.

[0037]

According to the constitution of claim 1, it is possible to efficiently convey a plurality of concrete specimens without scratching them and in a minimum space.
According to the configuration described, after transporting a plurality of concrete specimens without damaging them, they can be set one by one, for example, on the set table of the end face polishing machine, so that the setting work and the removing work of the concrete test specimens can be performed manually. Alternatively, it can be performed automatically without using other means such as a robot.

[Brief description of drawings]

FIG. 1 is a front view of an end surface polishing machine for a concrete specimen, which is equipped with a transfer device.

FIG. 2 is a front view of a central portion of the transfer device.

FIG. 3 is a plan view of a central portion of the transport device.

FIG. 4 is a view taken along the line IV-IV in FIG. 3 and is a vertical cross-sectional view of the main conveyor.

FIG. 5 is a front view showing a state of the chain when the test piece is set.

FIG. 6 is a front view showing a state of the chain during transportation of the test piece.

FIG. 7 is a schematic side view of the chain, showing a transportation state of the specimen.

FIG. 8 is a partial plan view of the chain.

FIG. 9 is a partial side view of the chain.

FIG. 10 is a table showing, for each size of the test piece, a comparison between the gap between the test pieces and the number of chain pitches during transportation.

[Explanation of symbols]

W ... Concrete specimen 1 ... Transport device 2 ... Roller chain 2a ... Roller 3 ... Main conveyor 5 ... Base 7 ... Support frame, 7a ... Transport side support frame, 7b ... Transport side support frame 10 (10a, 10) ) ... Driven sprocket 11 ... Drive motor 12 ... Tension guide 13 ... Cylinder 14 ... Idler 40 ... Sub-conveyor 50 ... End face polishing machine main body 51 ... Set base, 51a ... V groove

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[Procedure amendment]

[Submission date] October 15, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Fig. 10

[Correction method] Change

[Correction content]

FIG. 10 is a table showing, for each size of the test piece, a comparison between the gap between the test pieces and the number of chain pitches during transportation.

Claims (2)

[Claims] 1. A transportation device for horizontally transporting a cylindrical concrete specimen, comprising a transportation roller chain having a large roller, and between rollers adjacent to each other in the transportation direction of the roller chain. The concrete specimen is placed in the state of being laid sideways, and in this state, the roller chain is rotationally driven to hold a plurality of concrete specimens in a state where they do not contact each other and can be transported. Characteristic concrete specimen transporter. 2. A transportation device for horizontally transporting a cylindrical concrete specimen, comprising a roller chain for transportation having a large roller, and between rollers adjacent to each other before and after the roller chain in the transportation direction. Is placed in a state in which the concrete specimen is laid down sideways, and in this state, the roller chain is rotationally driven so that the plurality of concrete specimens are held in a position where they do not contact each other and can be conveyed, and A part of the base for receiving the roller chain is provided with a missing part, and by loosening the tension in the stopped state of the roller chain, a part of the roller chain is hung downward through the missing part, One concrete specimen placed on the hanging part is moved downward by its own weight, A concrete specimen transporting device, wherein the one concrete specimen can be transferred from the roller chain to another portion while being moved to.