JPH09165996A - Scraping method of concrete form and scraping device of concrete form - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate definitely and efficiently the residual concrete cured and deposited on the outer peripheral surface of a concrete form and used for a secondary lining service. SOLUTION: A movable truck 20 is provided on both sides of a concrete form 10 where a belt provided with a large number of brush members on one side is prepared. A belt transfer mechanism having a belt transfer point, a fulcrum and a working point is provided on the transfer truck 20. The belt 36 is mounted on the outer peripheral surface of the form 10 while it is fixed with the working point of the belt transfer mechanism, thereby acting a vertically moving push power on the power point of the belt transfer mechanism and moving the belt 36 in the peripheral surface direction of the form 10. At the same time, the movement of the transfer truck 20 in the front and rear direction forces the belt 36 to move in the front and rear direction of the form 10 so that the residual concrete deposited on the concrete form 10 may be eliminated therefrom.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete mold keel for removing residual concrete that has hardened and adhered to a concrete formwork for placing concrete for secondary lining in a tunnel from the concrete formwork ( KEHREN
German; cleaning, removing) methods and devices.

[0002]

2. Description of the Related Art Conventionally, when placing secondary lining concrete into a tunnel through a concrete formwork, the concrete formwork is set, cured and cured, and then the concrete formwork is separated from the concrete placing surface. Then, the concrete formwork is moved to the next position, and the concrete for the secondary lining is placed again, so the accuracy of the secondary lining work is improved, and the outer surface of the concrete formwork is hardened after each use. It was indispensable to remove the residual concrete that had adhered due to this (cleaning).

As shown in FIG. 8, in the cleaning work of the residual concrete hardened and adhered to the outer peripheral surface of this concrete formwork, as shown in FIG. 8, the operator can use a large number of inspection windows provided in the concrete formwork to remove brushes, scrubbing brushes, etc. It was done through a concrete removal tool.

Incidentally, 10 in FIG. 8 is a concrete formwork, 4
2 is an inspection window, 44 is a concrete filling window, 46 is a tunnel, and 48 is a concrete placing surface.

[0005]

Conventionally, as described above, it is possible to carry out the smelting work of the residual concrete that has hardened and adhered in the vicinity of the inspection window of the concrete form, but the residual concrete in other parts. It is impossible to carry out the sizing work, and if the space between the concrete placing surface and the outer peripheral surface of the separated concrete formwork is narrow, the work becomes difficult, and the squeezing work of the concrete formwork occurs, and the next time However, it has been a problem that it causes a defective secondary lining work.

Further, since the work is manually performed by the worker,
The problem was that the efficiency was not good.

In view of such drawbacks, the present invention is a concrete formwork capable of surely and efficiently removing residual concrete that has been hardened and adhered to the outer peripheral surface of the concrete formwork and used for the secondary lining. It is an object of the present invention to provide a keren method and a keren device.

[0008]

According to the method of the present invention, concrete for secondary lining is placed in a tunnel through a concrete formwork, and after curing and hardening, the concrete formwork is placed on a concrete placing surface. In the Keren method of removing residual concrete that has hardened and adhered to the concrete formwork after being separated from, in the left and right sides of the concrete formwork, a movable carriage is disposed so as to be movable in the front-rear direction of the concrete formwork, On the other hand, a belt provided with a large number of brush members on one side while maintaining a predetermined interval, and a moving lubricating member having the same height as the brush members between adjacent brush members is prepared, , A belt moving force point for moving the belt in the circumferential direction of the concrete formwork, a fulcrum,
A belt moving mechanism having an action point is provided, the brush member of the belt is brought into contact with the concrete formwork, the belt is hung on the outer peripheral surface of the concrete formwork, and both ends in the length direction of the belt are the belts of the moving carriage. The belt is moved in the circumferential direction of the concrete formwork by fixing the belt movement action points of the movement mechanism to the belt movement force points, and then exerting vertical movement pressing force on the belt movement force points. Characterized by moving in the front-back direction, sliding the brush member of the belt over the entire outer peripheral surface of the concrete formwork, and removing the residual concrete for secondary lining that has hardened and adhered to the concrete formwork, Alternatively, the belt moving mechanism of one of the movable carriages arranged on both the left and right sides in the concrete formwork may be replaced with a structure having a belt moving force point, a fulcrum, and an action point An elastic member for applying a biasing force to the belt, one end of the belt in the longitudinal direction is fixed to the elastic member, and sliding of the brush member of the belt in the circumferential direction of the concrete form is performed by the belt of the other belt moving mechanism. The feature is that it is performed only by the vertical movement pressing force applied to the moving force point.

In the apparatus of the present invention, a large number of brush members are provided on one side of the brush member at predetermined intervals, and a moving lubricating member having the same height as the brush members is provided between adjacent brush members. Belts are provided, and on the other hand, on the left and right sides of the concrete formwork, movable carriages are respectively arranged so as to be movable in the front-rear direction of the concrete formwork, and for moving the belts in the circumferential direction of the concrete formwork. A belt moving mechanism having a belt moving force point, a fulcrum, and a point of action is provided, the belt brush member is brought into contact with the concrete formwork, and the belt is hung on the outer peripheral surface of the concrete formwork. Both ends of the belt in the longitudinal direction are respectively fixed to the belt moving action points of the belt moving mechanism of the moving carriage, or left in a concrete formwork The belt moving mechanism of one of the moving carriages arranged on both sides is replaced with an elastic member for applying a biasing force to the belt instead of the structure having the belt moving force point, the fulcrum, and the acting point, and the belt length is set to this elastic member. It is characterized in that one end in the vertical direction is fixed.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION As shown in FIG. 1 to FIG. 6, a concrete form cleaning device according to the present invention has the following structure.

Concrete formwork 10 used in the present invention
Is provided with a base 12 movably and vertically movable on a floor surface 11, and an upper foam 14 and a base 1 are provided above the base 12.
The side foams 16 are provided on both sides of the base 2, and the lower foam 18 is provided under the base 12.

On both the left and right sides of the concrete form 10, movable carriages 20 are provided so as to be movable in the front-rear direction of the concrete form 10 (direction of arrow B).

As shown in FIG. 3, the moving mechanism of the moving carriage 20 includes traveling rails 2 along the front-rear direction of the concrete form 10 at the lower left and right sides inside the concrete form 10.
2 is laid, and the drive motor 2 is mounted on the traveling rail 22.
4 is installed and a wire 26 is stretched around the moving carriage 20 via the drive motor 24. The moving carriage 20 fixed on the traveling rail 22 by the wire 26 is driven by the driving force of the drive motor 24. Moves.

Further, it is desirable that the movements of both movable carriages 20 are synchronized with each other in order to improve work efficiency.

A belt moving mechanism 34 having a belt moving force point 28, a fulcrum 30, and an action point 32 for moving a belt 36, which will be described later, in the moving carriage 20 in the circumferential surface direction of the concrete form 10 (direction of arrow A). Is provided.

As shown in FIGS. 4 and 5, the belt 36 mounted on the present apparatus is provided with a large number of brush members 38 on one side thereof with a predetermined interval, and brushes are provided between adjacent brush members 38. A moving lubricating member 40 having the same height as the member 38 is provided.

The material of the belt 36 used in this example is preferably one having excellent durability, and a resin belt is particularly suitable.

The brush member 38 may be a brush made of a material such as chemical fiber, aluminum or the like, the width is the same as that of the belt 36, the length of each brush member 38 and the distance between the brush members 38. In order to reduce the distance of one movement of the belt 36 in the circumferential direction of the concrete form 10 at one time, and to prevent the concrete removed by the cleaning operation from being sandwiched between the brush members 38. The optimal range is 15 to 25 cm.

The moving lubricating member 40 is a single ball bearing, and two moving lubricating members 40 are arranged between each brush member 38 on one side surface of the belt 36. The moving lubricating member 40 manually moves the belt 36. This is to reduce the frictional force between the brush member 38 and the concrete form 10 when the concrete form 10 is slid back and forth in the circumferential direction.

The height of the moving lubricating member 40 is set to be the same as that of the brush member 38 when the belt 36 slides on the outer peripheral surface of the concrete form 10 in the height direction of the brush member 38. Side pressure is reduced and the brush member 38
This is to prevent abrasion of the.

The brush member 38 of the belt 36 is brought into contact with the concrete formwork 10 to hang the belt 36 on the outer peripheral surface of the concrete formwork 10, and the belt 36
Both ends in the length direction of the are fixed to the belt moving action point 32 of the belt moving mechanism 34.

Further, the added thickness of the belt 36 and the brush member 38 is set to be narrower than the distance between the secondary lining concrete placing surface 48 and the separated outer peripheral surface of the concrete form 10. Is essential.

To hang the belt 36 on the concrete formwork 10, after one end of the belt 36 in the length direction is positioned on one side of the concrete formwork 10, the lower edge of the concrete formwork 10 on one side is positioned. , On the outer peripheral surface of the concrete formwork 10,
After being positioned on the other side of the concrete formwork 10 via the lower edge of the other side of the concrete formwork 10, the belt moving action point 32 of the belt moving mechanism 34 of the moving carriages 20 on the left and right sides.
Then, both ends of the belt 36 in the length direction are fixed.

At this time, the work of mounting the belt 36 on the outer peripheral surface of the concrete form 10 is manually performed by the operator through the inspection window 42 and the concrete filling window 44 of the concrete form 10.

With this apparatus, concrete for secondary lining is placed in the tunnel 46 through the concrete formwork 10, cured and hardened, and then the concrete formwork 10 separated from the concrete placing surface 48 is placed. The method of removing the material is detailed below.

First, the two moving carriages 20 are driven by the drive motor 24.
The concrete formwork 10 is moved to either side via the.

Next, as described in (0023, 0024), the belt 36 is hung on the outer peripheral surface of the concrete form 10, and both ends in the length direction of the belt 36 are the belts of the left and right moving carriages 20. The moving mechanism 34 is fixed to each of the belt moving action points 32.

Next, an operator rides on each of the movable carriages 20, applies a vertical moving pressing force to each of the belt moving force points 30 of the belt moving mechanism 34 of each movable carriage 20, and makes both movable carriages 20 of the concrete type. The frame 10 is moved to the other side via the drive motor 24.

At this time, the vertical movement pressing force applied to the belt movement force point 30 of the belt movement mechanism 34 causes the belt movement action point 32 to move up and down with the belt movement fulcrum 30 as a fulcrum.

Therefore, the belt 36 fixed to the vertically moving belt moving action point 32 moves in the circumferential surface direction (direction of arrow A) on the outer peripheral surface of the concrete form 10, and the brush member of the belt 36. 38 slides back and forth on the outer peripheral surface of the concrete formwork 10 in the peripheral surface direction.

Further, if the belt movement action point 32 moves up and down (reciprocating) at least by the distance between the belt members 38 provided on the belt 36, a large number of brush members 38 of the belt 36. Will slide on the entire outer peripheral surface of the concrete form 10, so in this example, the optimum distance between the belt members 38 may be as short as 15 to 25 cm.

Simultaneously with the movement of the belt 36 in the circumferential direction of the concrete form 10, both moving carriages 20 move in the front-back direction of the concrete form 10 (direction of arrow B),
The belt 36 also moves on the outer peripheral surface of the cochleet form 10 in the front-back direction.

Therefore, the brush member 38 of the belt 36 is
Sliding on the outer peripheral surface of the concrete form 10 in the peripheral direction and the front-rear direction, a large number of brush members 38 provided on one side surface of the belt 36 reliably cleans the entire outer peripheral surface of the concrete form 10. It

Another example is shown in FIG.

In this example, the belt moving mechanism 3 of one moving carriage 20 disposed on the left and right sides of the concrete formwork 10 is used.
4 is replaced with a structure having a belt moving force point 28, a fulcrum 30, and an action point 32, and is an elastic member 50 for applying an urging force to the belt 36, such as a spring or a cylinder, and the length of the belt 36 is fixed to the elastic member 50. One end of the direction is fixed, and sliding of the brush member 38 of the belt 36 in the circumferential direction of the concrete form 10 is performed only by the vertical movement pressing force applied to the belt moving force point 28 of the other belt moving mechanism 34. Is.

At this time, the vertical movement pressing force acting on the belt moving force point 28 of the belt moving mechanism 34 needs to be increased as compared with the previous example, but the same effect as the previous example can be obtained.

[0037]

According to the method and apparatus for removing concrete formwork according to the present invention, a belt provided with a large number of brush members at a predetermined distance on one side is provided in the circumferential direction of the concrete formwork. And by moving it in the front-back direction, the concrete for the secondary lining of the tunnel is cast on the outer peripheral surface of the concrete formwork, so the residual concrete that has hardened and adhered to the concrete formwork is surely removed. can do.

Further, since the movement of the belt in the circumferential surface direction of the concrete formwork is the movement of only the vertical movement distance of the belt moving action point of the belt moving mechanism having the belt moving force point, the fulcrum, and the action point, The belt length can be kept slightly longer than the outer peripheral length of the concrete formwork,
Since the moving distance of the belt in the circumferential direction is short, the durability of the belt and the brush member can be improved.

Further, since the moving lubricating member is provided between the adjacent brush members of the belt, when the belt is manually slid back and forth in the circumferential direction of the concrete formwork,
The frictional force between the brush member and the outer peripheral surface of the concrete form can be reduced, and the work can be performed with a smaller force.

Further, since the height of the moving lubricating member is the same as that of the brush member, it is possible to reduce the pressure in the height direction of the brush member when the belt is slid on the outer peripheral surface of the concrete form. It is possible to prevent abrasion of the brush member.

Further, the belt moving mechanism of one of the movable carriages arranged on both the left and right sides in the concrete form is replaced with a structure having a belt moving force point, a fulcrum, and an action point, and an urging force is applied to the belt. As an elastic member, one end in the length direction of the belt is fixed to this elastic member, and sliding of the brush member of the belt on the outer peripheral surface of the concrete form acts on the belt moving force point of the other belt moving mechanism. By using only the dynamic pressing force, the structure can be made simpler, and one or two workers can perform the work of squeezing the concrete form, thereby reducing the number of workers.

[Brief description of the drawings]

FIG. 1 is a front view of a concrete form cleaning device according to the present invention.

FIG. 2 is an enlarged front view of a main part of the same.

FIG. 3 is an enlarged side view of a main part of the same.

FIG. 4 is an enlarged front view of the belt.

FIG. 5 is an enlarged side view of the belt.

FIG. 6 is a schematic perspective view showing a usage state.

FIG. 7 is a front view showing another example.

FIG. 8 is a schematic perspective view showing a conventional technique.

[Explanation of symbols]

 10 Concrete Formwork 20 Moving Bogie 28 Belt Moving Force Point 30 Belt Moving Support Point 32 Belt Moving Action Point 34 Belt Moving Mechanism 36 Belt 38 Brush Member 40 Moving Lubrication Member 46 Tunnel 48 Concrete Placing Surface 50 Elastic Member

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] February 23, 1996

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1 is a front view of a concrete form cleaning device according to the present invention.

FIG. 2 is an enlarged front view of a main part of the same.

FIG. 3 is an enlarged side view of a main part of the same.

FIG. 4 is an enlarged perspective view of a belt.

FIG. 5 is a schematic perspective view showing a usage state.

FIG. 6 is a front view showing another example.

FIG. 7 is a schematic perspective view showing a conventional technique.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tsunehide Okubo 144 Shijo, Motosu-gun, Gifu Prefecture, 144 Shijo, Gifu Industry Co., Ltd.

Claims (4)

[Claims] 1. Tunnel through concrete formwork (10)
After placing concrete for secondary lining in (46) and curing and hardening, concrete formwork (10) is placed on the concrete placing surface.
After separating the concrete formwork (10) from the concrete formwork (10), remove the residual concrete that has hardened and adhered to the concrete formwork (10). A movable carriage (20) is arranged so as to be movable in any direction, and a large number of brush members (3
8) is provided, and a belt (36) provided with a moving lubricating member (40) having the same height as the brush member (38) between adjacent brush members (38) is prepared. In (20), a belt moving mechanism (34) having a belt moving force point (28) for moving the belt (36) in the circumferential direction of the concrete formwork (10), a fulcrum (30), and an action point (32). The brush member (38) of the belt (36) is brought into contact with the concrete formwork (10) to hang the belt (36) on the outer peripheral surface of the concrete formwork (10), and the belt (36) Both ends in the longitudinal direction of the belt are fixed to the belt moving action points (32) of the belt moving mechanism (34) of the moving carriage (20), and then the vertical moving pressing force is applied to the belt moving force points (28). Move the belt (36) in the circumferential direction of the concrete formwork (10) and move the carriage (20) to the concrete formwork (10).
For the secondary lining that has been hardened and adhered to the concrete formwork (10) by moving the brush member (38) of the belt (36) over the entire outer peripheral surface of the concrete formwork (10) by moving the brush member (38) in the front-back direction. A method for removing concrete formwork, characterized by removing the remaining concrete. 2. A belt moving mechanism (34) of one moving carriage (20) arranged on both left and right sides in a concrete formwork (10),
Instead of the structure having the belt moving force point (28), the fulcrum point (30), and the action point (32), an elastic member that applies a biasing force to the belt (36).
(50), one end in the length direction of the belt (36) is fixed to this elastic member (50), and sliding of the brush member (38) of the belt (36) in the circumferential direction of the concrete formwork (10). 2. The method for removing concrete formwork according to claim 1, wherein the step is performed only by the vertical movement pressing force applied to the belt moving force point (28) of the other belt moving mechanism (34). 3. A large number of brush members (38) are provided on one side of the brush member at predetermined intervals, and adjacent brush members (3) are provided.
A belt (36) provided with a moving lubricating member (40) having the same height as the brush member (38) is provided between 8), while the concrete formwork is provided on both left and right sides in the concrete formwork (10). A movable carriage (20) is arranged so as to be movable in the front-rear direction of (10), and a belt movement for moving the belt (36) to the movable carriage (20) in the circumferential direction of the concrete formwork (10). A belt moving mechanism (34) having a working point (28), a fulcrum (30) and an action point (32) is provided, and the brush member (38) of the belt (36) is brought into contact with the concrete formwork (10). The belt (36) is hung on the outer peripheral surface of the concrete formwork (10), and both ends of the belt (36) in the longitudinal direction are belts of the belt moving mechanism (34) of the moving carriage (20). A concrete formwork squeezing device characterized by being fixed to each of the moving action points (32). 4. A belt moving mechanism (34) of one moving carriage (20) arranged on both left and right sides in a concrete formwork (10),
Instead of the structure having the belt moving force point (28), the fulcrum point (30), and the action point (32), an elastic member that applies a biasing force to the belt (36).
4. The concrete mold squeezing device according to claim 3, wherein the elastic member (50) is fixed to one end of the belt (36) in the longitudinal direction.