JP2979505B1 - Concrete joint surface treatment equipment - Google Patents

Abstract

The present invention provides a concrete jointing surface treatment apparatus that enhances the degree of freedom of a movable range of a brush, and a brush always contacts a treated surface of concrete with a constant ground pressure, and can easily replace a brush. provide. A brush (10) is supported by a frame (9) that can swing up and down and around a shaft (9j). The brush 10 is provided with a lifting means 12 for lifting the brush 10 by a lifting force that is constantly adjusted. The brush 10 is supported at one point via a wire 13. Brush 10
And a buffer means 19 for buffering upward movement of the vehicle. When the brush 10 is arranged at a lower portion, the brush 10 is provided with a suspended portion 22 suspended by the lifting device 3 to facilitate replacement of the brush 10. The frame 9 includes a mounting portion (38) provided at an end of the brush 10 and a rotatable mounted portion (30) to which the mounting portion (38) can be mounted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for treating a joint surface of concrete.

[0002]

2. Description of the Related Art For example, in the construction of concrete dams, it is an important issue in dam concrete construction to remove unnecessary materials such as latencies that have floated and solidified on a joint surface of concrete. However, the roughness of the joint surface is greatly affected by compaction management after the concrete is cast, and there is a portion where unevenness of several tens of mm occurs. It is necessary to deal with such irregularities.

[0003] As a processing device for the joint surface of concrete,
Conventionally, for example, there is one disclosed in Japanese Patent Application Laid-Open No. 7-163774. Hereinafter, an outline of the technology disclosed in the publication will be described with reference to the reference numerals used in the figures in the publication.

[0004] In the conventional concrete joining surface treatment apparatus having the configuration as shown in the publication, while rotating the short cylindrical brushes 1a around their shafts 3,.
By moving each of the brushes 1a,... On the joint surface of concrete for each of the processing apparatuses, and polishing the surface with each of the brushes 1a,. It has become.

Since the brushes 1a are the same, only the brush 1a will be described below. At both ends of the shaft 3 of the brush 1a, semi-cylindrical guides 4, 4 are provided so that their spherical portions 4a, 4a face outward. Spherical portions 4a, 4a of the kamaboko type guides 4, 4
The guides 4, 4 are slid up and down while contacting the inside of the channel-shaped bearings 5, 5 at their most convex portions.
Are provided with channel-shaped bearings 5 and 5 on both sides thereof.

The brush frame 7 supporting the brush 1a is suspended by a lifting mechanism such as a spring 8 provided on the main body frame 2.

[0007] The brush frame 7 includes a pivotable joint 1.
It is rotatably connected to the support frame 12 of the spring 8 via 3. The upper end of a spring 8 is fixed to the support frame 12, and the support frame 12 is urged upward by the spring 8.

Here, a pair of bolts 9, 9 and nuts 10, 10 provided on the upper part of the main body frame 2 and a plate 11 bridged between the bolts 9, 9 constitute a stroke adjusting member. However, the lower end of the spring 8 is fixed to the upper part of the plate 11 of the stroke adjusting member.

Therefore, by adjusting the vertical fixing position of the plate 11 and adjusting the length of expansion and contraction of the spring 8, the lifting force of the support frame 12 by the spring 8 can be adjusted. The ground pressure can be adjusted.

Next, the operation will be described. Since both ends of the shaft 3 of the cylindrical brush 1a are in a free state with respect to the channel-shaped bearings 5 and 5 via the cam-shaped guides 4 and 4, when the processing apparatus is moved on the concrete surface, Both ends of the shaft 3 of the brush 1a independently slide up and down according to the unevenness of the concrete surface.

Further, since the brush frame 7 is rotatably connected to the support frame 12 of the spring 8 through the rotatable joint 13, both ends of the shaft 3 of the brush 1a are independently movable in the horizontal direction. Moving.

Therefore, the brush 1a can move according to the irregularities of the concrete surface.

[0013]

However, the technique disclosed in Japanese Patent Application Laid-Open No. Hei 7-163774 has the following problems.

First, since the lifting mechanism of the brush 1a is configured to lift the brush 1a only directly above, the degree of freedom of the movable range of the brush 1a is poor.

Further, when the kamaboko type guides 4, 4 slide up and down, the guides 4, 4 are scraped by friction with the channel-like bearings 5, 5, etc., and flakes are generated. There is a problem in that the flakes accumulate on the sliding portion, so that the kamaboko guides 4, 4 cannot move up and down.

Further, as described above, the kamaboko type guide 4,
If the brush 4 cannot move up and down, the lifting force on the brush 1a and the brush frame 7 cannot be adjusted, so that the ground pressure of the brush 1a cannot be adjusted.

In addition, before that, in order to adjust the lifting force, it was necessary to determine the longitudinal positions of the two bolts for fixing the plate 11 and fix the plate 11 here. There is a problem that it takes time to adjust the force, and a problem that it takes time to grasp the correlation between the fixed position of the plate 11 and the ground pressure of the brush 1a.

On the other hand, as a characteristic of the cylindrical brush, the unevenness of the processing surface and the change in the coefficient of friction of the ground contact surface due to the condition of the concrete cause the cylindrical brush 1a to bounce due to the reaction of rotation, resulting in a finish of the processing surface. There was a big unevenness.

In addition, when replacing the brush 1a, the brush shaft 3
Also need to be removed together, which is a large-scale operation for handling a heavy object, and has a problem that it takes time to replace the brush 1a.

Accordingly, an object of the present invention is to increase the degree of freedom of the movable range of the brush, and at the same time, the brush always comes into contact with the concrete processing surface with a constant ground pressure, and in addition, the brush can be easily replaced with concrete. It is to provide a joint surface treatment device.

[0021]

According to the first aspect of the present invention,
In the concrete joining surface treatment device that moves on the joining surface of concrete while operating the brush and removes unnecessary matter on the joining surface, it is supported by a frame that can swing up and down around the fulcrum, And a brush that swings up and down with the swing of the frame around the fulcrum, and the frame has a shaft extending from the fulcrum toward the tip of the frame, The frame is swingable around the axis of the shaft, and the frame swings around the axis of the shaft, and the brush also swings around the axis of the shaft. .

According to the first aspect of the present invention, the frame is supported by a frame which can swing up and down around the fulcrum, and swings up and down with the up and down swing of the frame around the fulcrum. Since the moving brush is provided, the degree of freedom in the vertical direction of the brush is obtained, and the brush can move up and down in accordance with the unevenness of the concrete surface. Moreover, since the swing mechanism hardly deteriorates, the same operation can be obtained constantly.

Further, the frame has a shaft extending from the fulcrum toward the front end of the frame, the frame is swingable around the axis of the shaft, and
Since the frame swings around the axis of the shaft and the brush also swings around the axis of the shaft, the degree of freedom of the brush in the direction around the axis of the shaft of the frame is obtained. The brush swings in a direction around the axis of the shaft portion of the frame according to the unevenness of the concrete surface. Moreover,
Since the swing mechanism hardly deteriorates, the same operation can be obtained constantly.

Here, as the brush, for example, a brush having a cylindrical shape and rotating around a central axis of the cylindrical shape in a state where the side peripheral portion is in contact with the ground may be mentioned.
In addition, for example, the concrete surface is brushed and polished, for example, one having an annular grounding portion and rotating in the horizontal direction, and one having a rectangular grounding portion and reciprocating in the horizontal direction. Anything that is suitable for

The frame has, for example, a fork shape in which a forked rod portion is formed at a tip portion, a brush is held between the two rod portions, and a fork-shaped shaft portion is further provided. A fulcrum is provided at the base end of the fulcrum, and the fulcrum can be swung up and down around the fulcrum, but the brush can be supported and can swing up and down around the fulcrum. The specific configuration of the frame is arbitrary as long as the frame is one.

According to a second aspect of the present invention, there is provided the concrete joining surface treatment apparatus according to the first aspect, further comprising a lifting means for lifting the brush by a lifting force that is constantly adjusted.

According to the second aspect of the present invention, since the brush is provided with the lifting means for lifting the brush with the lifting force constantly adjusted to be constant, the brush can be always lifted with the constant lifting force. Therefore, even if the brush moves freely due to a change in the state of the concrete surface such as unevenness, the ground pressure of the brush can be always kept constant.

As the lifting means, for example, there is a means using a device called a spring balancer having a structure capable of pulling a wire with a constant force. In this case, one end of the wire fed from the spring balancer may be locked to a frame or the like supporting the brush via a pulley or the like.

According to a third aspect of the present invention, in the concrete joining surface treatment apparatus according to the second aspect, the brush is
It is characterized in that it is supported at one point by the lifting means via a wire.

According to the third aspect of the present invention, since the brush is supported at one point by the lifting means via a wire, the degree of freedom when the brush moves depending on the state of the concrete surface or the like is further increased. Accordingly, the movement of the brush becomes more flexible and smooth.

Further, if the frame is provided at different positions in the direction from the fulcrum toward the distal end with respect to the fulcrum, locked portions for locking one end of the wire drawn out from the lifting means are provided. By changing the locked portion for locking one end of the wire, the ground pressure of the brush can be easily adjusted by the so-called leverage principle. further,
It is possible to adjust to a desired ground pressure if necessary by checking in advance which one of the locked parts should be locked with one end of the wire and what the ground pressure of the brush will be. .

As the locked portion, a shackle may be used, and a hook may be provided at one end of the wire. In this case, the hook is easily locked to the locked portion. However, the specific configuration of the locked portion is arbitrary.

According to a fourth aspect of the present invention, there is provided the concrete joining surface treatment apparatus according to any one of the first to third aspects, further comprising a buffer means for buffering upward movement of the brush. I have.

According to the fourth aspect of the present invention, since the cushioning means for buffering the upward movement of the brush is provided, the state of the concrete surface such as the unevenness of the concrete surface and the friction coefficient of the concrete surface changes. The brush can be prevented from bouncing upward.

As the buffer means, for example, a hydraulic damper mechanism may be used.
Any material can be used as long as a desired damping action can be obtained, such as a pneumatic damper mechanism or a damper mechanism using a compression coil spring.

According to a fifth aspect of the present invention, in the apparatus for treating a joint surface of concrete according to any one of the first to fourth aspects, the brush is disposed below the processing apparatus and is suspended by a lifting device. And a suspended portion that is suspended, whereby a lower portion of the processing apparatus is directed sideways.

According to the fifth aspect of the present invention, a brush is provided at a lower portion of the processing apparatus, and a suspended portion suspended by a lifting device is provided, and the suspended portion is suspended. The brush can be easily replaced because the lower part of the processing device faces sideways.

As the suspended portion, for example, an elongated column-shaped bracket is provided in the processing apparatus so that the base end thereof can rotate, and the tip of the bracket is connected to the tip of the arm of the lifting device. Although connection with a part etc. is mentioned, the shape and configuration of the bracket are arbitrary, and it is not always necessary to use the bracket.

According to a sixth aspect of the present invention, in the concrete joining surface treatment apparatus according to any one of the first to fifth aspects, the brush is a cylindrical brush, and a frame for supporting the cylindrical brush. A mounting portion provided on the cylindrical end surface of the brush; and a mounted portion rotatably provided on a portion of the frame corresponding to the mounting portion and to which the mounting portion is mounted. It is characterized by:

According to the sixth aspect of the present invention, a frame for supporting the cylindrical brush, a mounting portion provided on the cylindrical end surface of the brush, and a frame for the frame corresponding to the mounting portion. A rotatable portion and a mounting portion to which the mounting portion is mounted, so that the brush can be easily replaced simply by mounting the mounting portion on the mounting portion.

As the cylindrical brush, for example,
A hollow body penetrating both end faces of the cylindrical shape is formed, and a relatively light one is exemplified. In this way, there is no need to perform a large-scale operation for handling heavy objects, and the operation can be performed more easily.

The frame has, for example, a fork shape in which a forked rod portion is formed at the tip as described above, and the cylindrical brush is held between the two rod portions. The specific configuration of the frame is arbitrary as long as it can support the brush.

The mounting portion may have a disk shape corresponding to an end face of the cylindrical brush.

The mounting portion has, for example, a disk shape corresponding to the mounting portion, and its outer peripheral portion is formed so as to open to two parts around a hinge. There is an example in which a groove that opens inward is formed so as to surround the outer peripheral portion of the mounting portion.

Further, in a state where the mounting portion and the mounted portion are combined, a bolt is passed through the mounting portion and the mounted portion to fix the mounting portion and the mounted portion. Although the configuration may be cited, the specific shape and the specific assembling method of the mounting portion and the mounted portion are arbitrary.

The attachment portion may be provided on both end surfaces of the cylindrical brush, or may be provided on one end surface.

[0047]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a concrete jointing surface treatment apparatus according to the present invention will be described below with reference to FIGS.

FIG. 1 is an overall side view showing an application example of a concrete joining surface treatment apparatus as an embodiment of the present invention, and FIG. 2 is a concrete view of an embodiment of the concrete according to the present invention. FIG. 3 is a side view showing an application example of the joint surface treatment device, FIG. 3 is a plan view showing an application example of the concrete joint surface treatment device as an embodiment of the present invention, and FIG. It is a front view showing the example of application of the concrete jointing surface treating device as an example of an embodiment concerning the present invention seen from the side.

First, in FIG. 1, a supported portion 2 provided on an upper part of a concrete joining surface treatment device 1 is connected to a tip end of an arm 4 of a lifting device 3. In this state, the processing device 1 can be moved by moving the lifting device 3 or turning the arm 4 of the lifting device 3. The arm 4 has a rotating shaft 4
A mechanism is provided for swinging the front part 4b in the horizontal direction around the center a, so that the processing apparatus 1 can be translated in the horizontal direction. Further, the supported part 2 can be slid up and down within the housing 5. Therefore, within this sliding range, the lifting device 3
There may be a step at the position between the device and the processing device 1.

As shown in FIG. 2, the processing apparatus 1 is a vehicle schematically constituted by a supported portion 2, brush portions 6,..., A vehicle body 7, wheels 8,.

FIG. 6 is a plan view showing a brush section 6 as an embodiment according to the present invention. As shown in the figure, the frame 9 has a fork shape in which a forked rod portion 9k, 9k is formed at the distal end.
Further, the brush 10 has a cylindrical shape, and a hollow penetrating both end surfaces of the cylindrical shape is formed. Accordingly, the brush 10 is relatively light. Further, such a brush 10 is provided on both rod portions 9 of the frame 9.
k, 9k, and is rotatable around the center line of the cylindrical shape. Frame 9 of this brush 10
The specific method of providing the above will be described later.

At the base end of the frames 9,..., Fulcrums 9s,... Are provided as shown in FIG. The frames 9,... Are supported by the vehicle body 7 at the fulcrums 9s,..., And can swing up and down around the fulcrums 9s,. Further, the frames 9,...
Shafts 9j,... extending in the direction from s,. The frames 9,... Are rotatable around the axes of the shaft portions 9j,.

At this time, each of the brushes 10,. Therefore, the frames 9,... Swing up and down around the fulcrum 9s due to irregularities on the concrete surface where the brush 10 is grounded, and the brushes 10,. .., And the brushes 10,... Can also swing about the axes of the shaft portions 9j,.

A brush section 6 having such a brush 10 and a frame 9 is provided at a front portion of a lower portion of the vehicle body 7 of the processing apparatus 1 at two spaced apart left and right positions. A total of three brush parts are provided between the two brush parts 6 and 6.

At the upper part of each of the frames 9,..., There are provided locked members 11,. These locked members 11,... Are for locking hooks 14,. The locked members 11,...
It is provided so as to be curved along the upper part of 0,. And, these locked members 11,.
A plurality of locked parts 11k,... Arranged in the longitudinal direction are attached. These locked portions 11k,... Are shackles.

Reference numerals 12,... Denote spring balancers, which are fixed to the upper part of the vehicle body 7. The hooks 14,... Are provided at one ends of the wires 13,. And the wire 1
Extend through the pulleys 15 to the locked portions 11k of the locked members 11, respectively.
Are locked to the locked portions 11k.

The spring balancers 12,... Are devices each configured to be able to pull the wires 13,. Therefore, in the above state, the brush portions 6,... Are lifted by the spring balancers 12,... With a constant force via the pulleys 15,. Grounding pressure.

Reference numerals 16,... Denote motors. These motors 1
Power is transmitted to sprockets 18, via chains 17,. These sprockets 18,... Are provided on one side of the frames 9,. 23 are chain covers.

Dampers (buffer means) 19,... Are provided above the brush portions 6,. The dampers 19,... Contract as resistance when the brush parts 6,... Move upward, and extend without resistance when the brush parts 6,. Therefore, the behavior of the brushes 10,... To rebound can be buffered by unevenness of the concrete surface or a change in the friction coefficient of the concrete surface.

At the position corresponding to the base end of each of the brush portions 6,... Of the vehicle body 7, lower limit stoppers 20,. When the brush portions 6,... Move downward by a certain amount or more, the lower portions of the frames 9,... Of the brush portions 6,. It does not move downward.

Further, a sled 21 is provided at a lower portion of a front portion of the vehicle body 7. This is to prevent the wheels 8,... From falling into the drain pit provided on the concrete surface of the dam.

On the upper part of the rear part of the vehicle body 7 of the processing apparatus 1, a suspended part 22, which is a long and narrow column-shaped bracket,
22 are provided. These suspended portions 22, 22
Can be rotated with each base end as a fulcrum.

Accordingly, the distal end of the arm 4 of the lifting device 3 is connected to the suspended portions 22,
Is raised, the rear part of the processing apparatus 1 is gradually lifted, and the suspended portions 22, 22 are gradually rotated around their base ends, so that the rear part of the processing apparatus 1 is turned upward. So that it can be suspended. Therefore, the brushes 10,... Provided at the lower part of the processing device 1 can be easily replaced from the side.

In the following, brushes 10,... And frames 9,
Will be described in detail with reference to FIGS. 6 to 9. Since each connection is the same, only one connection will be described.

As shown in FIG. 6, mounted portions 30 are provided inside the rod portions 9k of the frame 9, respectively. On the other hand, on both end surfaces of the cylindrical brush 10,
An attachment portion 38 is provided. Further, in a state where the mounting portion 38 of the brush is mounted on the mounting portion 30 of the frame 9, each mounting portion 30 is formed such that the brush 10 is rotatable around the center line of the cylindrical shape. It is rotatable with respect to the rod 9k of the frame 9.

FIG. 7 is a side view showing a connecting portion between the brush and the frame according to the present invention. FIGS. 8 and 9 are side views for explaining an assembling operation of the connecting portion between the brush and the frame according to the present invention. FIG. 4 is a perspective view illustrating an operation of assembling a connection portion between the brush and the frame according to the present invention.

As shown in FIGS. 7 to 10,
The mounting portion 38 has a disk-shaped schematic shape corresponding to the end face of the brush 10 having a cylindrical shape, and has a circular outer peripheral portion 39. The mounting portion 38 has an insertion hole 40 through which a bolt 41 described later is inserted.
Are provided so as to extend in the radial direction of the mounting portion 38.

On the other hand, the main portion 31 and the branch portion 32 of the mounted portion 30 can be opened and closed with a hinge 33 as a fulcrum. The attached portion 30 has a circular outer peripheral portion 34. A groove 34m opened toward the center is formed in the outer peripheral portion 34. The inner periphery of the groove 34m has such a size and shape that it comes into contact with the outer periphery 39 of the mounting portion 38 exactly. On the inner periphery of the groove 34m, a convex portion 37 to be inserted into the insertion hole 40,
There is provided a screw hole 35 for tightening a bolt 41, which will be described later, through which 0 has been inserted. The branch portion 32 of the attached portion 30 is provided with an insertion hole 36 for inserting the bolt 41. When the main portion 31 and the branch portion 32 of the attached portion 30 are closed, the screw hole 35, the convex portion 37,
The through holes 36 have a positional relationship such that they are aligned on a straight line.

The main portion 31 and the branch portion 3 of the attached portion 30
2 is opened with the hinge 33 as a fulcrum, and after the outer peripheral portion 39 of the mounting portion 38 is brought into contact with the inner circumference of the groove 34m of the mounted portion 30, the main portion 31 and the branch portion 32 of the mounted portion 30 are separated. In the closed state, the bolt 41 is inserted through the insertion hole 36 and the insertion hole 40, and the bolt 41 is screwed into the screw hole 35, whereby the mounted portion 30 and the mounting portion 38 are connected. .

Two connecting portions between the brush 10 and the frame 9 are provided for each of the brush portions 6,. In each of the brush portions 6, the brush 10, the mounting portion 38 provided on the brush 10, and the mounted portion 30 are integrally formed between the two rod portions 9k, 9k of the frame 11 to form the brush 10. It is rotatable around the axis.

Here, among the mounted portions 30,..., The mounted portions 30,... Provided on one side of the rod 9k of each frame 9,. ,..., And rotates with the operation of the motors 16,. Therefore, after the mounting portions 38,... And the mounting portions 30,... Are respectively connected as described above, the brushes 10,. Rotates.

It should be noted that the brush spring retainer 42 is
Is a plate having a size and a shape that covers about half of the annular side portion 10s. The brush fly retainer 42 is
Are held between the mounting portion 38 and the wires 10w so that the wires 10w are not obstructed when the brush 10 is replaced.

The positioning member 43 has an elongated rod-like shape corresponding to each inner periphery of the insertion hole 40 of the mounting portion 38 and the insertion hole 36 of the mounting portion 30. The positioning member 43 is used when assembling the mounting portion 38 and the mounted portion 30, and a specific usage thereof will be described later.

Next, the operation will be described. <Processing operation of concrete surface by concrete joining surface treatment device> First, after placing the concrete joining surface treatment device 1 on a concrete surface, each motor 16,.
Each of the cylindrical brushes 10,... Is rotated around the central axis of the cylindrical shape via chains 17,..., Sprockets 18,. Then, the processing device 1 is moved on the concrete surface by turning or swinging the arm 4 of the lifting device 3.
In this way, unnecessary substances such as latencies floating on the concrete surface can be removed from the surface by the processing apparatus 1.

At this time, there are portions on the concrete surface where irregularities (irregularities) are formed. However, each frame 9 of each of the brush portions 6,... , The brushes 10,... Oscillate up and down in accordance with the up and down swing of each frame 9 in a portion where such unevenness exists.

Further, the shaft portions 9j of the frames 9,.
Are swingable around their respective axes. Therefore, depending on the size and shape of the irregularities and the positional relationship between the irregularities and the brushes 10, the axial directions of the shaft portions 9j,. Of the brushes 10,...
swings around the axis of j,.

Here, since these swing mechanisms hardly deteriorate, the same operation can be obtained constantly.

On the other hand, by the action of the spring balancers 12,..., The brushes 6,... Are lifted by the wires 13,. Since it is grounded at a constant ground pressure on the side circumference, even when crossing uneven ground,
The brushes 10,... Always contact the concrete surface with a constant contact pressure, and can constantly polish the concrete surface with a constant ability.

In addition, at this time, the brushes 6,... Are supported at one point by the wires 13, so that the vertical and axial swings of the brushes 10,. Done in

The hooks 14,...
The wires 13 are connected to the brush portions 6 only by being locked to the locked portions 11k of the brushes.
, The locked portions 11k,... Are arranged in a direction from each fulcrum 9s,.
Are provided, the positions at which the hooks 14,... Are locked can be easily adjusted, and the ground pressure of each of the brushes 10,. Here, to which of the locked portions 11k,... The hooks 14,.
If you check in advance what the ground pressure will be,
If necessary, it can be adjusted to a desired ground pressure.

On the other hand, there is a case where the brushes 10 attempt to bounce due to the reaction of rotation due to irregularities on the concrete surface or changes in the friction coefficient of the concrete surface.
, The upward movement of each of the brush portions 6,... Is buffered, and thus each of the brush portions 6,.
Does not rise sharply. Therefore, it is possible to prevent the polishing finish of the concrete surface from being uneven.

FIG. 5 is an overall side view showing a brush changing operation in the concrete joining surface processing apparatus according to the embodiment of the present invention.

When replacing the brushes 10,... Of the concrete joining surface treatment device 1, first, the distal end of the arm 4 of the lifting device 3 is attached to the upper portion of the rear portion of the treatment device 1. Connected to the hanging part 22.

In this state, the arm 4 of the lifting device 3 is lifted, and the processing device 1 is suspended with its rear side upward as shown in FIG. Thus, each of the brush portions 6,... Is in a state where it can be easily replaced from the side.

The bolts 41 provided at both ends of the first brush 10 are removed, and the mounting portion 30 is removed.
The main part 31 and the branch part 32 are opened centering on the hinge 33, and the brush 10 is removed from the front end of the frame 9. At this time, since the cylindrical brush 10 is formed with a hollow penetrating both end surfaces of the cylindrical shape, the brush 10 is relatively light and the removal operation can be easily performed.

Next, when attaching a new brush 10 to the tip of the frame 9, first, the wire 1 of the brush 10
0w,... And the mounting portion 38,
In between. Thereby, the wire 10 of the brush 10
.. are pressed down, and the mounting portion 38 provided on the brush 10 and the mounting portion 30 provided on the frame 9 are easily assembled, so that the brush 10 can be easily replaced.

Further, when assembling the mounting portion 38 and the mounted portion 30, the insertion hole 4
It is necessary to adjust the positional relationship between the mounting portion 38 and the mounted portion 30 so that the longitudinal direction of the mounting portion 30 and the insertion hole 36 and the convex portion 37 of the mounted portion 30 are aligned. There is. For this purpose, as shown in FIG. 9, one end of the positioning member 43 is fastened to the screw hole 35 of the projection 37 provided on the mounting portion 30, and the other end of the positioning member 43 is What is necessary is just to insert in the insertion hole 40 of the said attachment part 38.

With the positions of the mounting portion 38 and the mounted portion 30 adjusted as described above, the outer peripheral portion 39 of the mounting portion 38 is removed, and the positioning member 43 is removed. 34, the main portion 31 of the attached portion 30 and the branch portion 32
And close. In this state, the bolt 41 is inserted through the insertion hole 36 of the insertion attachment portion 30 and the insertion hole 40 of the attachment portion 38 in this order, and the bolt 41 is screwed into the screw hole 35 of the projection 37.
The connection between the mounted portion 30 and the mounting portion 38 can be easily performed simply by screwing the mounting portion 30 into the mounting portion 30.

The above-described brush replacement operation is similarly performed on the remaining two brushes.

In the above-described embodiment, three brush portions each including a brush and a frame are provided. However, the present invention is not limited to this configuration. Optional. Although the brush is a cylindrical brush, the shape of the brush is also arbitrary. further,
Specific configurations and structures of the frame, the lifting means, the locked member, the buffering means, the mounting portion, the mounted portion, the suspended portion, and the like are also arbitrary and can be appropriately changed. Of course.

[0091]

According to the apparatus for treating a joint surface of concrete according to the first aspect of the present invention, the frame is supported by a frame which can swing up and down about a fulcrum, and the frame is made about the fulcrum. Since the brush is provided with a brush that swings up and down with the swinging up and down, the degree of freedom of the brush in the up and down direction can be obtained, and the brush can move up and down according to the unevenness of the concrete surface. Moreover, since the swing mechanism hardly deteriorates, the same operation can be obtained constantly. Therefore, the concrete surface can always be polished in response to irregularities.

The frame has a shaft extending from the fulcrum toward the tip of the frame, the frame is swingable around the axis of the shaft, and
Since the frame swings around the axis of the shaft and the brush also swings around the axis of the shaft, the degree of freedom of the brush in the direction around the axis of the shaft of the frame is obtained. The brush swings in a direction around the axis of the shaft portion of the frame according to the unevenness of the concrete surface. Moreover,
Since the swing mechanism hardly deteriorates, the same operation can be obtained constantly. Therefore, it is possible to always more reliably polish the concrete surface corresponding to unevenness.

According to the apparatus for treating a joint surface of concrete according to the second aspect of the present invention, since the brush is provided with a lifting means for lifting the brush by a lifting force which is always adjusted to be constant, the brush is always lifted at a constant height. Can be lifted by force. Therefore, even if the brush moves freely due to a change in the state of the concrete surface such as unevenness, the ground pressure of the brush can be always kept constant. Accordingly, it is possible to prevent the brush from being deformed, to prevent the concrete surface from being excessively cut, or to prevent the shaving from being insufficiently cut, so that the concrete surface can be uniformly finished.

According to the concrete joining surface treatment apparatus according to the third aspect of the present invention, since the brush is supported at one point by the lifting means via the wire, the brush moves depending on the condition of the concrete surface or the like. The degree of freedom is increased. Further, provided that a locked portion for locking one end of the wire fed from the lifting means is provided at a plurality of locations at different positions in the direction from the fulcrum to the tip end of the frame, By changing the locked portion for locking one end, the ground pressure of the brush can be easily adjusted by the so-called leverage principle. Therefore,
A concrete joint surface treatment device can be used according to various types of concrete surfaces.

According to the apparatus for treating a joint surface of concrete according to the fourth aspect of the present invention, since there is provided a buffer means for buffering the upward movement of the brush, irregularities on the concrete surface, a friction coefficient of the concrete surface, etc. The brush can be prevented from bouncing upward due to the change in the state of the concrete surface. Therefore, the deformation of the brush can be more reliably prevented, and the concrete surface can be prevented from being excessively cut or insufficiently cut, so that the concrete surface can be finished more uniformly.

According to the apparatus for treating a joint surface of concrete according to the fifth aspect of the present invention, a brush is provided at a lower portion of the processing apparatus, and a suspended portion suspended by a lifting device is provided. When the suspension unit is suspended, the lower part of the processing apparatus faces sideways, so that the brush can be easily replaced.

[0097] According to the apparatus for treating a joint surface of concrete according to the present invention, a frame for supporting the cylindrical brush, an attaching portion provided on the cylindrical end face of the brush, A mounting portion to be rotatably provided on a portion of the frame corresponding to the mounting portion and to which the mounting portion is mounted, so that the brush can be easily obtained simply by mounting the mounting portion to the mounting portion. Can be exchanged.

[Brief description of the drawings]

FIG. 1 is an overall side view showing an application example of a concrete joining surface treatment apparatus as an embodiment according to the present invention.

FIG. 2 is a side view showing an application example of a concrete joint surface treatment apparatus as an embodiment of the present invention.

FIG. 3 is a plan view showing an application example of a concrete joint surface treatment apparatus as an embodiment of the present invention.

FIG. 4 is a front view showing an application example of the concrete joining surface treatment apparatus as the embodiment of the present invention as viewed from the direction of arrow L in FIG. 2;

FIG. 5 is an overall side view showing a brush replacement operation in the concrete joining surface treatment apparatus as an embodiment according to the present invention.

FIG. 6 is a plan view showing a brush portion as an embodiment according to the present invention.

FIG. 7 is a side view showing a connecting portion between the brush and the frame according to the present invention.

FIG. 8 is a side view for explaining an assembling operation of a connecting portion between the brush and the frame according to the present invention.

FIG. 9 is a side view for explaining an assembling operation of a connecting portion between the brush and the frame according to the present invention.

FIG. 10 is a perspective view for explaining an assembling operation of a connecting portion between the brush and the frame according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 Concrete joining surface treatment device 2 Supported portion 3 Lifting device 6 Brush portion 9 Frame 9j Shaft portion 9s Support point 10 Brush 11 Locked member 12 Lifting means (spring balancer) 13 Wire 19 Buffering means (Damper) 22 Cover Hanging part 30 Mounted part 38 Mounting part

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Yasushi Kuwahara 3072 Ogami, Hiratsuka-shi, Kanagawa Prefecture Nishimatsu Construction Co., Ltd. (72) Inventor Koichi Owatani 3072 Ogami, Hiratsuka-shi, Kanagawa Nishimatsu Construction Co., Ltd. Hiratsuka Works (72) Inventor Toshiya Kazama 1-20-10 Toranomon, Minato-ku, Tokyo Nishimatsu Construction Co., Ltd. (72) Inventor Masanori Ishii 1-20-10 Toranomon, Minato-ku, Tokyo Nishimatsu Construction Co., Ltd. (56) Reference Patent 2534562 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04G 21/02 103 A46B 7/06 E01H 1/00 E02B 7/00

Claims (6)

(57) [Claims] An apparatus for treating a concrete joint surface that moves on a joint surface of concrete while operating a brush and removes unnecessary material on the joint surface, and swings up and down around a fulcrum. A brush supported by a free frame, and swinging up and down with the swinging of the frame up and down around the fulcrum, wherein the frame moves in a direction from the fulcrum toward the tip of the frame. An extending shaft, wherein the frame is swingable around the axis of the shaft, and the frame swings around the axis of the shaft, and the brush also swings around the axis of the shaft. Moving surface of the concrete. 2. The concrete joining surface treatment apparatus according to claim 1, further comprising a lifting means for lifting the brush by a lifting force that is constantly adjusted. 3. The concrete joining surface treatment apparatus according to claim 2, wherein the brush is supported at one point by the lifting means via a wire. 4. The concrete jointing surface treatment apparatus according to claim 1, further comprising a buffer means for buffering upward movement of the brush. 5. The brush is provided at a lower portion of the processing device, and includes a suspended portion suspended by a lifting device, and the suspended portion is suspended, so that the lower portion of the processing device is suspended. The concrete jointing surface treatment device according to any one of claims 1 to 4, wherein the device faces a side. 6. The brush is a cylindrical brush, a frame supporting the cylindrical brush, a mounting portion provided on the cylindrical end surface of the brush, and a brush corresponding to the mounting portion. The concrete joining surface treatment apparatus according to any one of claims 1 to 5, further comprising: an attached portion rotatably provided on a frame portion, to which the attaching portion is attached.