JP2005199573A - Abrasion buffering method, abrasion buffering device, and concrete kneading machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an abrasion buffering method which can prevent the abrasion of the wall surface of a prescribed passage by the collision of solids having certain sizes when the solids are moved in the passage, an abrasion buffering device, and concrete kneading machine. <P>SOLUTION: The abrasion buffering device 1, when the solids 10 having certain sizes are moved in the passage 11, prevents the abrasion of the wall surface 12 of the passage 11 by the collision of the solids 10. Just in front of a part 13 supposed to collide with the solids 10 in the wall surface 12 of the passage 11, the solids 10 are made to collide with a collision member 14 to change the moving direction of the solids 10 to be separated from the wall surface of the passage, so that the solids are prevented from colliding with the wall surface 12 of the passage 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a wear buffering method, a wear buffering device, and a concrete kneading device.

  2. Description of the Related Art Conventionally, there is known an apparatus for kneading concrete by repeatedly dividing and joining the concrete by passing the concrete through a predetermined passage. Since such a kneading apparatus can knead a large amount of concrete continuously, the working efficiency is improved.

  However, the conventional apparatus for kneading concrete in the passage has a problem that the aggregate contained in the concrete collides with the wall surface of the passage and wears the wall surface.

  Such problems are not limited to concrete kneaders, but when a fluid containing a certain amount of particles is transported by piping, or various objects such as steel are dropped and transported to a predetermined place by changing the falling direction. This also occurs in the same way.

  The present invention has been made in view of such a problem. When a solid material having a certain size moves through a predetermined passage, the wear buffer capable of preventing the wall surface of the passage from being worn by the collision of the solid matter. It is an object of the present invention to provide a mounting method, a wear buffering device, and a concrete kneading device.

  The present invention employs the following means in order to solve the above problems. That is, the present invention is a wear buffering method for preventing a wall surface of the passage from being worn by a collision of the solid when a solid having a certain size or more moves in a predetermined passage, Immediately before the portion where the solid matter on the wall surface of the passage is supposed to collide, the solid matter is caused to collide with a member to be collided, and the moving direction of the solid matter is changed to a direction away from the wall surface of the passage. The solid material is prevented from colliding with the wall surface of the passage.

  In the present invention, since the solid matter can be prevented from colliding with the wall surface of the passage, it is possible to prevent the wall surface of the passage from being worn. In addition, the magnitude | size of the solid object made into object here can be suitably set according to the material, weight, the material of the wall surface of a channel | path, etc.

  Here, the solid matter is a falling object, the passage is a movement passage of the solid matter, the colliding member protrudes from the wall surface, and when the solid matter moves through the passage, Immediately before the solid object collides with the wall surface, the solid object collides with the colliding member, and the moving direction of the solid object is changed to a direction away from the wall surface, whereby the object collides with the wall surface. Can be prevented.

  Further, the solid matter is an aggregate included in concrete, the passage is a movement path of the concrete, and the aggregate or the like immediately before the wall collides when the concrete moves through the movement path. The aggregate is prevented from colliding with the wall surface by causing the aggregate to collide with the impacted member and changing the moving direction of the solid material such as the aggregate to a direction away from the wall surface. can do.

Examples of the solid matter include steel materials, sand, gravel, and earth and sand in addition to aggregates contained in concrete. In this case, steel, sand, gravel or earth and sand are dropped and an inclined plate is provided in the passage to change the falling direction of the steel, sand, gravel or earth and sand, thereby removing steel, sand, gravel or earth and sand. When transported to a predetermined place, it is possible to prevent the inclined plate from being worn by collision with steel, sand, gravel, earth or sand. The solid matter may be contained in a mixture other than concrete, such as a fluid or powder.

  Furthermore, it is preferable that the collision target member can adjust a projecting dimension from the wall surface of the passage. In this case, when the member to be collided is worn and its projecting dimension becomes small, it is not necessary to replace the collided member by returning the projecting dimension to a specified length.

  The present invention is a wear buffering device for preventing the wall surface of the passage from being worn by a collision of the solid material when a solid material having a certain size or more moves in a predetermined passage. It is provided just before the part assumed that the said solid substance collides, and it has the to-be-collided member which protruded only the predetermined dimension from the wall surface of the said channel | path.

  According to the present invention, it is possible to prevent the wall surface of the passage from being worn by a solid collision with a simple configuration.

  Here, the impacted member is preferably a screw member screwed into the wall surface of the passage, or a rod-like member or a plate-like member that is movably attached by a wedge or the like. In this case, the protruding dimension of the impacted member can be easily adjusted.

  Moreover, this invention has the said wear buffering apparatus, The said solid substance is the aggregate etc. which are contained in concrete, The said channel | path is a channel | path for kneading | mixing of concrete, It is characterized by the above-mentioned.

  According to the present invention, it is possible to prevent the wall surface in the concrete kneading passage from being worn by collision of aggregates or the like with a simple configuration.

  The above-described configurations can be combined with each other without departing from the spirit of the present invention.

  As described above, according to the present invention, it is possible to prevent the wall surface of the passage from being worn by a solid material having a certain size or more, so that the life of the parts can be extended and replacement work is unnecessary. In addition, reliability can be improved and costs can be reduced.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the wear buffering device 1 according to the first embodiment of the present invention is configured such that when a solid material having a certain size or more moves in the passage 11, The wall surface 12 is configured to be prevented from being worn.

  That is, the wear buffer 1 is provided with a screw member 14 as a member to be collided immediately before a portion 13 where the solid object 10 on the wall surface 12 of the passage 11 is supposed to collide. The screw member 14 protrudes from the wall surface 12 of the passage 11 by a predetermined dimension.

  In this example, the solid material 10 falls through the passage 11, and an inclined plate 15 is provided in the middle thereof. Then, the solid material 10 collides with the screw member 14 protruding from the wall surface 12 which is the inclined surface of the inclined plate 15 and moves in a direction away from the wall surface 12. In addition, the code | symbol 16 in FIG. 1 is a reinforcement member.

  In the wear buffering device 1, the solid material 10 can be prevented from colliding with the wall surface 12, and thus the wall surface 12 can be prevented from being worn by the solid material 10.

  If it is assumed that the screw member 14 is not provided, the solid material 10 directly collides with a part 13 of the wall surface 12 as shown in FIG. When the wear amount of the wall surface 12 increases, the passage 11 is damaged, and when fluid flows through the passage 11, the fluid leaks to the outside of the passage.

  In addition, since it is necessary to replace the inclined plate 15 at an early stage, the work is interrupted by the replacement of parts, and the number of work steps is increased and the cost is increased, thereby reducing the reliability.

  On the other hand, the wear buffer 1 of the present invention can prevent the wear of the wall surface 12 due to the collision of the solid material 10, and thus can prevent the passage 11 from being damaged. Thereby, even when a fluid flows in the passage 11, the fluid can be prevented from leaking out of the passage 11.

  Furthermore, parts replacement work such as the inclined plate 15 becomes unnecessary, cost can be reduced, and reliability is improved.

(Second Embodiment)
FIG. 3 shows a concrete kneading apparatus 2 according to the second embodiment. In the concrete kneading apparatus 2, kneading units 20A and 20B having different internal passage configurations are alternately connected. A hopper 21 is provided on the upper side of the uppermost kneading unit 20A. A discharge port 22 is provided below the lowermost kneading unit 20B.

  This concrete kneading apparatus 2 is installed vertically. Then, the concrete 23 to be kneaded is fed from the hopper 21, kneaded while dropping in the kneading units 20 </ b> A and 20 </ b> B, and discharged from the discharge port 22. Note that reference numeral 38 in FIG. 3 denotes an aggregate included in the concrete 23.

  The kneading units 20A and 20B are configured to knead the concrete 23 by repeatedly applying a compressive force and a shearing force. That is, as shown in FIG. 4, one kneading unit 20 </ b> A has its inlet 30 divided into two in the left-right direction in FIG. 4 by a partition wall 31, and two inlets 30 </ b> A and 30 </ b> B are provided.

  Further, the outlet 32 of the kneading unit 20A is divided into two in the vertical direction in FIG. 4 by the partition wall 33, and two outlets 32A and 32B are provided.

  The left entrance 30A of the left and right entrances 30A and 30B and the upper exit 32A of the up and down exits 32A and 32B are connected by a passage 34A.

  The passage 34A has an entrance 30A that is vertically long and an exit 32A that is horizontally long. And it is gradually deformed from vertically long to horizontally long from the entrance 30A side to the exit 32A side. As a result, the compressive force and the shearing force act on the concrete 23 passing through the passage 34A and are kneaded.

  The other kneading unit 20B has substantially the same shape as the other kneading unit 20A, but the left inlet 30A is connected to the lower outlet 32B by the passage 35A, and the right inlet 30B is connected to the upper outlet 32A by the passage 35B. It is connected to the.

  The concrete 23 discharged from the upper outlet 32A of the upper kneading unit 20A is divided into two by the left and right inlets 30A and 30B of the lower kneading unit 20B, and then compressed when passing through the passages 34A and 34B. Force and shear force are applied.

  Further, the concrete 23 discharged from the lower outlet 32B of the upper kneading unit 20B is divided into two by the inlets 30A and 30B divided into the left and right of the lower kneading unit 20B, and then passes through the passages 34A and 34B. At that time, compressive force and shear force act.

  Each kneading unit 20A, 20B (only 20A is shown) is provided with the above-described wear buffering device 1 (see FIG. 1) as shown in FIG. In the following description, one kneading unit 20A will be described, but the same applies to the other kneading unit 20B.

  The wear buffer 1 is provided on the side of the inlets 30A and 30B in both the passages 34A and 34B of the kneading unit 20A. As described above, the passages 34A and 34B are vertically long on the inlet side 30A and 30B side, and are horizontally long on the outlet 32A and 32B side.

  Further, the passages 34A, 34B are bent and formed in a substantially square shape from the inlets 30A, 30B side to the outlets 32A, 32B side. The passage 34A and the passage 34B are bent to the opposite sides.

  The wear buffer 1 is provided such that the screw member 14 protrudes from the upward inclined surfaces 36A and 36B of the passages 34A and 34B. In this example, a member capable of adjusting the projecting dimension, in this example, the screw member 14 projects by a predetermined dimension from the inclined surfaces 36A and 36B arranged immediately below the entrances 30A and 30B. The inclined surfaces 36A and 36B correspond to the wall surface 12 (see FIG. 1).

  As shown in FIG. 6, the screw member 14 is provided with an appropriate number according to the size of the inclined surfaces 36 </ b> A and 36 </ b> B and the size of the aggregate 38. In this example, three screw members 14 are provided on each of the inclined surfaces 36A and 36, but may be one, two, or four or more.

  Next, the operation of the concrete kneading apparatus 2 will be described. As shown in FIG. 5, the concrete 23 put in from the hopper 21 (see FIG. 3) is divided into two at the entrances 30A and 30B of the kneading unit 20A, and falls in the passages 34A and 34B, respectively.

  At this time, the aggregate 38 dropped from directly above the upward inclined surfaces 36A and 36B provided in the passages 34A and 34B collides with the screw member 14 protruding from the inclined surfaces 36A and 36B, and the direction of the fall is It is converted in a direction away from the inclined surfaces 36A, 36B.

  Accordingly, the aggregate 38 can be prevented from colliding with the inclined surfaces 36A and 36B, and therefore the wear of the inclined surfaces 36A and 36B due to the collision of the aggregate 38 can be prevented. However, since relatively fine particles contained in the concrete 23 collide with the inclined surfaces 36A and 36B, wear due to this occurs, but the wear amount is very small.

  On the other hand, the distal end portion of the screw member 14 on the side of the passages 34A and 34B is worn by the collision of the aggregate 38. When the amount of wear of the screw member 14 is large and the amount of protrusion of the screw member 14 from the inclined surfaces 36A and 36B becomes smaller than a specified value, the screw member 14 is screwed into the passages 34A and 34B, and the inclined surface 36A is obtained. , 36B is adjusted to the specified value.

It should be noted that when the amount of wear at the tip of the screw member 14 on the side of the passages 34A, 34B exceeds a certain level, it must be replaced. In this case, the screw thread formed at the tip of the screw member 14 is deformed, and the screw member 14 cannot be pulled out in the reverse direction.

  Therefore, in this example, a screw without a head is used so that it can be easily pulled out from the side of the passages 34A and 34B. As the screw member 14, a screw with a head can be used.

  As described above, the concrete kneading apparatus 2 can suppress the wear amount of the portion where the aggregate 38 and the like collide with the wall surfaces of the passages 34A and 34B. Etc., cost reduction, and improvement in reliability are possible.

  In the above-described embodiment, the case where the concrete 23 is kneaded has been described. However, the present invention is not limited to this, and when the solid material having a certain size or a fluid containing the solid material moves through the passage, the passage This is suitable when there is a possibility that the wall surface of the metal wears due to the collision of solid matter.

  Examples of such a case include a case where steel material, sand, gravel, earth or sand, etc. are dropped, changed in direction on an inclined surface, and transported to a predetermined place.

  In the above embodiment, the case where only one row of the screw members 14 is provided has been described. However, as shown in FIG. 7, the screw members 14 are arranged in a plurality of rows according to the amount of aggregate 38 and other conditions. It can also be provided.

  Further, as shown in FIG. 8, a rod-like member 41 or a plate-like member that is movably attached by a wedge 40 instead of the screw member 14 can be used as a collision target member. The rod-shaped member is not limited to a circular cross section, and may be a polygon. Moreover, it replaces with the screw member 14, and can use the rod-shaped member or plate-shaped member which was attached movably by appropriate means other than a wedge.

It is sectional drawing which shows the wear buffering apparatus which concerns on 1st Embodiment. It is sectional drawing which shows the abrasion state when not providing an abrasion buffer. It is an external view of the concrete kneading apparatus which concerns on 2nd Embodiment. It is a perspective view which shows the kneading unit which concerns on 2nd Embodiment. It is sectional drawing which shows the kneading | mixing unit which concerns on 2nd Embodiment. It is A arrow directional view of FIG. It is a figure which shows another Example which shows arrangement | positioning of the screw member which concerns on 2nd Embodiment. It is sectional drawing which shows another example of the to-be-buffered member which concerns on 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wear buffer device 2 Concrete kneading device 10 Solid 11 Passage 12 Wall surface 13 Colliding part 14 Screw member 15 Inclined plate 16 Reinforcement member 20A, 20B Kneading unit 21 Hopper 22 Discharge port 23 Concrete 30 Inlet 30A, 30B Inlet 31, 33 Partition wall 32 outlet 32A, 32B outlet 34A, 34B passage 36A, 36B inclined surface 38 aggregate 40 wedge 41 rod-shaped member

Claims (9)

A wear buffering method for preventing a wall of the passage from being worn by a collision of the solid when a solid having a certain size or more moves in a predetermined passage,
Immediately before the portion where the solid matter on the wall surface of the passage is supposed to collide, the solid matter is caused to collide with a colliding member and the moving direction of the solid matter is changed to a direction away from the wall surface of the passage. A wear buffering method, wherein the solid matter is prevented from colliding with a wall surface of the passage.   The solid matter is a falling object, the passage is a movement passage of the solid matter, the colliding member protrudes from the wall surface, and the solid matter is moved when the solid matter moves through the passage. Preventing the object from colliding with the wall surface by causing the solid object to collide with the colliding member immediately before colliding with the wall surface and changing the moving direction of the solid material to a direction away from the wall surface. The wear buffering method according to claim 1.   The solid is an aggregate contained in concrete, the passage is a movement path of the concrete, and when the concrete moves through the movement path, the bone or the like immediately before the aggregate collides with the wall surface. The aggregate is prevented from colliding with the wall surface by causing the material to collide with the impacted member and changing the moving direction of the aggregate to a direction away from the wall surface. The wear buffering method according to 1.   The friction buffer method according to claim 1, wherein the solid material is sand, gravel, or earth and sand.   The wear buffering method according to claim 1, wherein the solid matter is contained in a mixture of fluid, powder, or the like.   The wear buffering method according to any one of claims 1 to 5, wherein the collision target member is capable of adjusting a projecting dimension from the wall surface of the passage. A wear buffering device for preventing the wall of the passage from being worn by a collision of the solid when a solid having a certain size or more moves in a predetermined passage,
Provided immediately before the portion where the solid matter on the wall surface of the passage is supposed to collide, and having a collided member protruding from the wall surface of the passage by a predetermined dimension,
The wear buffering device, wherein the solid matter collides with the colliding member and the moving direction of the solid matter is changed to a direction away from the wall surface.   The wear shock absorber according to claim 7, wherein the collision target member is a screw member screwed into a wall surface of the passage, or a rod-like member or a plate-like member fixed movably by a wedge or the like.   A concrete kneading apparatus comprising the wear buffering device according to claim 7, wherein the solid matter is an aggregate contained in concrete, and the passage is a passage for kneading concrete.

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