KR102078130B1 - Extendable waterjet attachment and, methods for concrete chipping using the same - Google Patents

Abstract

The present invention relates to an extendable water jet attachment capable of enabling an efficient work by adjusting its width according to the width of concrete to be repaired, while providing convenience of transportation, and a concrete chipping method using the same. The expandable water jet attachment according to the present invention comprises: a main guide unit (110); an auxiliary guide unit (130); an injection unit (170) for injecting water jet; and an expansion means (160) for moving the auxiliary guide unit (130) to increase or decrease the horizontal movement width of the injection unit (170).

Description

Extendable waterjet attachment and, method for concrete chipping using the same

The present invention relates to an expandable waterjet attachment, and more specifically, to increase and decrease the width, the transport is convenient, and the width can be adjusted in response to the width of the concrete to be repaired. It is about.

In addition, the present invention also includes a concrete chipping method using the extended waterjet attachment.

In general, concrete chipping is to remove and repair the concrete surface that needs to be repaired with water jet (ultra high pressure water), which produces small dust and vibration, does not generate impact, does not damage the reinforcing steel, and deteriorates the concrete. Only the part can be selectively removed, the construction speed is fast, because the unevenness occurs on the concrete surface after the work has the advantage that the adhesion to the reinforced concrete is increased.

An apparatus for performing concrete chipping is disclosed in Korea Patent Publication No. 10-2006-0028445. The apparatus includes a main body 11, a track 12 for movement of the main body 11, and an attachment 20 provided in front of the main body 11, as shown in FIGS. 1 and 2. do.

The attachment 20 is installed at the front of the main body 11, it can be lifted vertically along the vertical 14 by the hoist (13). The attachment 20 may include a guide member 22, a spray unit 23 for spraying a water jet (ultra high pressure water), a splash prevention part 29 for preventing splashing of the removed concrete, and the like. Attachment 20 may be redirected by turning drive 21.

The injection unit 23 receives the power from the hydraulic motor and injects the waterjet while moving left and right along the guide member 22. However, since the length of the guide member 22 is fixed, the left and right moving widths of the spray unit 23 are fixed, whereby when the width of the concrete to be removed is wider than the length of the guide member 22, the concrete is removed at once. The problem is that they can't be removed.

In addition, when carrying the chipping device, since the length of the guide member 22 is fixed, there is a problem that a vehicle having a loading space larger than the width of the attachment 20 is required.

The present invention has been proposed to solve the above problems, it is possible to adjust the width of the left and right according to the width of the concrete to be removed, thereby completing the concrete removal work in one time, so that the expansion of the waterjet attachment can increase the work efficiency The purpose is to provide.

Still another object of the present invention is to provide an expandable waterjet attachment that is easy to carry and economical since the width of the attachment can be reduced.

Still another object of the present invention is to provide a concrete chipping method using the extended waterjet attachment.

In order to achieve the above object, the expandable waterjet attachment 100 according to the present invention includes: a main guide part 110 formed to extend in left and right directions; An auxiliary guide part 130 installed at at least one of both ends of the main guide part 110; A spray unit 170 for spraying a water jet while moving from side to side along the main guide unit 110 and the auxiliary guide unit 130; And, expansion means 160 for moving the auxiliary guide portion 130 to increase or decrease the left and right movement width of the injection unit 170; includes.

The auxiliary guide part 130 may be installed on both sides of the main guide part 110, respectively. In this case, the auxiliary guide part 130 of one side of the auxiliary guide part 130 of both sides is connected to the first frame 150 and the auxiliary guide part 130 of the other side is connected to the second frame 155.

The first and second frames 150 and 155 form a path through which the nozzle 175 of the injection unit 170 moves, and the portions except the path cover the surrounding concrete to prevent the removed concrete from splashing to the outside. do.

First and second frames 150 and 155 in a state where the first frame 150 is inserted inside the second frame 155 when the auxiliary guide 130 is moved left and right by the expansion means 160. The widths of the first and second frames 150 and 155 are adjusted by sliding with respect to each other.

On the other hand, the auxiliary guide unit 130 may be installed only on one side of the main guide unit 110. In this case, the auxiliary guide part 130 may be connected to the first frame 150 and the main guide part 110 may be connected to the second frame 155.

The main guide part 110 may include a first pipe 111.

And, the auxiliary guide portion 130 is installed to be inserted into the first tube 111, the inserted length is adjusted by the expansion means 160, the through-hole 132 is formed long along the longitudinal direction Two tubes 131; An expansion cylinder 140 installed inside the second pipe 131; And, the first state is installed so as to be elevated through the through-hole 132 by the expansion cylinder 140 to rise to the same height as the outer peripheral surface of the first tube 111, and than the inner peripheral surface of the first tube 111 And a support 135 including a second state descending downward.

After the second tube 131 is moved outward by the expansion means 160, the expansion cylinder 140 is operated to raise the support 135 to the same height as the outer circumferential surface of the first tube 111 injection unit Since the 170 may move left and right along the first and second pipes 111 and 131, the horizontal movement of the injection unit 170 increases.

On the other hand, after the expansion cylinder 140 operates in reverse, the support 135 descends below the inner circumferential surface of the first tube 131, and then the second tube 131 is extended by the expansion means 160. Moving to the center of the 111, the left and right movement width of the injection unit 170 is reduced.

The injection unit 170 includes a motor 172; And a roller 173 that is rotated by the rotational force transmitted from the motor 172 and travels along the first and second pipes 111 and 131. Unevenness may be formed on at least one of the outer circumferential surface of the first and second pipes 111 and 131 and the outer circumferential surface of the roller 173.

Preferably, a first sensor may be installed at both ends of the first tube 111, and a second sensor may be installed at the tip of the second tube 131.

When the auxiliary guide unit 130 is inserted into the inside of the main guide unit 110, the first sensor detects the injection unit 170 and transmits a signal to the control unit. Move to.

When the auxiliary guide unit 130 is moved to the outside of the main guide unit 110, when the second sensor detects the injection unit 170 and transmits a signal to the control unit, the control unit may include the injection unit 170. Move in the opposite direction.

Concrete chipping method is another aspect of the present invention, (a) adjusting the width of the attachment corresponding to the width of the concrete to be removed; And (b) driving the injection unit 170 to remove concrete after the step (a).

In the step (a), the auxiliary guide part 130 is slid with respect to the main guide part 110 to adjust the width. In the step (b), the jet unit 170 jets the water jet while driving along the main guide part 110 or traveling along the main guide part 110 and the auxiliary guide part 130.

The step (a) may include: (a1) moving the auxiliary guide part 130 to the outside of the main guide part 110 corresponding to the width of the concrete; And (a2) elevating the support 135 to the same height as the main guide part 130 through the through part 132 of the auxiliary guide part 130. In step (b), the injection unit 170 travels along the support 135 and the main guide part 110.

The present invention has the following effects.

First, the right and left working width can be adjusted according to the width of the concrete to be removed, and thus the work efficiency can be improved since the concrete removal work can be completed at one time.

Second, it is convenient and economical to transport because it can reduce the width of the attachment.

1 is a side view showing a concrete chipping device with a waterjet attachment according to the prior art.
Figure 2 is a front view showing the concrete chipping device of FIG.
3 is a front perspective view showing an expandable waterjet attachment according to a preferred embodiment of the present invention.
4 is a rear perspective view showing the expandable waterjet attachment.
FIG. 5A is a front view showing an expandable waterjet attachment, in which the auxiliary guide portion is extended outward and the support is raised; FIG.
FIG. 5B is an enlarged view of a portion A of FIG. 5A. FIG.
6A is a cross-sectional view of the end of the expandable waterjet attachment of FIG. 5A.
FIG. 6B is an enlarged view of a portion B of FIG. 6A. FIG.
FIG. 7 is a perspective view illustrating the auxiliary guide unit of FIG. 5. FIG.
8 is a perspective view illustrating an extension cylinder and a support installed in the auxiliary guide part of FIG. 5.
FIG. 9A is a front view showing an expandable waterjet attachment, in which the auxiliary guide portion extends outward and the support lowers; FIG.
FIG. 9B is an enlarged view of a portion C of FIG. 9A. FIG.
10A is a cross-sectional view of the end of the expandable waterjet attachment of FIG. 9A.
10B is an enlarged view of a portion D of FIG. 10A.
11A is a front view illustrating an extended waterjet attachment, in which the auxiliary guide part is inserted into the main guide part;
FIG. 11B is an enlarged view of a portion E of FIG. 11A; FIG.
12A is a cross-sectional view of the end of the expandable waterjet attachment of FIG. 11A.
12B is an enlarged view of a portion F of FIG. 12A.
13 is a perspective view showing a spray unit.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as being limited to the ordinary or dictionary meanings, and the inventors should properly explain the concept of terms in order to best explain their own inventions. It should be interpreted as meaning and concept corresponding to the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in the specification and the drawings shown in the drawings are only embodiments of the present invention and do not represent all of the technical idea of the present invention, various equivalents that may be substituted for them at the time of the present application It should be understood that there may be variations and examples.

On the other hand, the waterjet attachment according to the invention is used is mounted to the body portion of the concrete chipping device. The main body is not only the structure is known in the art, but also the Republic of Korea Patent Publication No. 10-2006-0028445 and the like, so that the description will be omitted here.

In the drawings below, x, y, and z axes are added for better understanding, and are three axes of the Cartesian coordinate axis and are perpendicular to each other.

3 is a front perspective view showing an expandable waterjet attachment according to a preferred embodiment of the present invention, and FIG. 4 is a rear perspective view showing the expandable waterjet attachment. 5A is a front view showing the expandable waterjet attachment.

As shown in the drawing, the expandable waterjet attachment 100 may include a main guide part 110, auxiliary guide parts 130 provided at both sides of the main guide part 110, and auxiliary auxiliary parts 130 at both sides. First and second frames 150 and 155, expansion means 160 for moving the auxiliary guide portion 130, and the injection unit 170 for spraying the water jet.

The main guide part 110 is formed to extend in the left and right directions (x direction). The main guide part 110 includes a first pipe 111 formed to extend in a left and right direction (x direction) and a fastening part 114 for mounting to a main body part of the concrete chipping apparatus.

The first tube 111 is a tube whose interior is empty. Preferably, the first tube 111 is a rectangular tube that can travel in a state where the roller 173 is seated on its outer peripheral surface. In order to prevent the roller 173 from slipping, irregularities, for example, knurling may be formed on the outer circumferential surface of the first tube 111.

Preferably, both ends of the first tube 111 may be provided with a first sensor (not shown) for detecting the injection unit 170. When the auxiliary guide unit 130 is inserted into the inside of the main guide unit 110, when the first sensor detects the injection unit 170 and transmits a signal to the control unit (not shown), the control unit sprays the injection unit. The unit 170 is moved in the opposite direction, so that the injection unit 170 reciprocates between two first sensors.

The fastening part 114 is installed at the rear of the main guide part 110. The fastening part 114 includes a fastening hole, which is provided with a fastening member for coupling the attachment 100 and the main body part.

The auxiliary guide part 130 is installed at both ends of the main guide part 110. Specifically, one end of the auxiliary guide portion 130 is inserted into the end of the first tube 111, the inserted length is adjusted by the expansion means 160 to increase or decrease the right and left working width of the attachment 100 do. The other end of the auxiliary guide unit 130 is installed to be connected to and supported by the first and second frames 150 and 155.

As shown in FIGS. 6A to 8, the auxiliary guide part 130 is formed by the second tube 131, the expansion cylinder 140 installed in the second tube 131, and the expansion cylinder 140. And lifting support 135.

The second tube 131 is a tube formed to extend in the x direction, and one end of the second tube 131 is slidably inserted into the first tube 111. This inserted length is adjusted by the expansion means 160.

The penetrating portion 132 is formed long in the second tube 131 along the x direction (the longitudinal direction of the second tube). The through part 132 is formed in the upper and lower portions of the second tube 131, respectively.

The expansion cylinder 140 is installed to be fixed to the inside of the second tube 131. The expansion cylinder 140 includes a cylinder body and a rod 142 connected to the cylinder body. The rod 142 is moved forward and backward by the cylinder body. The link 136 is installed in the rod 142.

As shown in FIGS. 6A to 6B, in the state in which the rod 142 is advanced by the expansion cylinder 140, the support 135 maintains the raised state (first state) through the through part 132. In this state, the support 135 has the same height as the outer circumferential surface of the first tube 111, and thus the spray unit 170 removes concrete while traveling along the main guide part 110 and the auxiliary guide part 130. You can work.

In addition, as shown in FIGS. 9A to 10B, in the state in which the rod 142 is reversed by the expansion cylinder 140, the support 135 descends through the through part 132, so that the support 135 is formed in the first pipe ( Located at a height lower than the inner circumferential surface of the 111 (second state), and when the expansion means 160 contracts in this state, as shown in FIGS. It is inserted inside.

 The support 135 is connected to the rod 142 by a link 136. One end of the link 136 is rotatably installed on the support 135 and the other end of the link 136 is rotatably installed on the rod 142. And guide pieces 137 for guiding the lifting and lowering of the support stand 135 are provided in both ends of the support stand 135. As shown in FIG. The guide piece 137 prevents the support 135 and the second pipe 131 from interfering with each other when the support 135 is moved up and down.

Therefore, when the rod 142 moves forward, the support 135 rises under the guide of the guide piece 137 (first state. See FIGS. 6A to 6B), and when the rod 142 moves backward, the support 135 moves toward the guide piece. It descend | falls under the guide of 137 (2nd state. See FIGS. 10A-10B).

Meanwhile, a second sensor (not shown) for detecting the injection unit 170 may be installed at the front end of the second tube 131. When the auxiliary guide unit 130 extends to the outside of the main guide unit 110, when the second sensor detects the injection unit 170 and transmits a signal to the control unit, the control unit causes the injection unit 170 to face in the opposite direction. Move to. Accordingly, the injection unit 170 reciprocates between the two second sensors.

The expansion means 160 increases or decreases the right and left working width of the attachment 100 by moving the auxiliary guide 130 to the inside of the main guide 110 or to the outside of the main guide 110. For example, when the loading space of the vehicle to carry the attachment 100 is narrow, the auxiliary guide part 130 is moved to the inside of the main guide part 110 to reduce the left and right widths, and the width of the concrete to be removed is wide. In the auxiliary guide 130 is moved to the outside of the main guide portion 110 to increase the work efficiency.

Both expansion means 160 may operate simultaneously or only one. For example, in FIG. 3, the expansion means 160 on the left side of the expansion means 160 on both sides operates to move the left auxiliary guide part 130 outward, and the expansion means 160 on the right side does not operate. The auxiliary guide part 130 may maintain a state inserted into the first tube 111.

Preferably, the expansion means 160 is a hydraulic cylinder. One end of the hydraulic cylinder 160 is connected to the main guide portion 110 and the other end is connected to the first and second frames 150 and 155. Accordingly, when the expansion means 160 extends, the first and second frames 150 and 155 and the auxiliary guide part 130 move outwards, and when the expansion means 160 contracts, the first and second frames 150 move. The 155 and the auxiliary guide part 130 are moved toward the main guide part 110.

 The first and second frames 150 and 155 are installed to be connected to the auxiliary guide part 130. The first and second frames 150 and 155 cooperate with each other to form a path through which the nozzle 175 of the injection unit 170 moves, and the remaining portions except the path cover the surrounding concrete to be removed by the waterjet. Prevents concrete from splashing outside.

One end of the first frame 150 remains inserted into the second frame 155, and in this state, when the expansion means 160 extends or contracts, the first and second frames 150 and 155 are provided. The widths of the first and second frames 150 and 155 are adjusted by sliding with respect to each other. The guide line protrusion 151 is formed on the outer surface of the first frame 150 to guide the sliding, and the groove line is formed on the inner surface of the second frame 155 to mate with the guide line protrusion 151. have.

As shown in FIG. 13, the injection unit 170 includes a bracket 171, a motor 172 installed in the bracket 171, a gear assembly for adjusting a driving force and a rotational speed of the motor 172, and a gear assembly. The roller 173 is connected to and rotated, and a nozzle 175 for spraying the waterjet.

 The outer circumferential surface of the roller 173 may be formed with irregularities, for example, knurling, to prevent sliding between the first tube 111 and the support 135.

The motor 172 may be driven by hydraulic or compressed air. When the motor 172 is driven, the roller 173 rotates, so that the injection unit 170 reciprocates along the main guide part 110 and the auxiliary guide part 130. At this time, the nozzle 175 sprays the waterjet in a state inserted into the first and second frames 150 and 155.

On the other hand, in the above described the auxiliary guide portion 130 and the expansion means 160 are respectively installed on both sides of the main guide portion 110, the auxiliary guide portion 130 and the expansion means 160 is the main guide portion 110 It may be installed only on one side of the). For example, in FIG. 3, the auxiliary guide unit 130 and the expansion unit 160 may be installed only on the right side of the main guide unit 110, and the auxiliary guide unit 130 and the expansion unit 160 may not be installed on the left side of the main guide unit 110. have. In this case, the first frame 150 is connected to the auxiliary guide part 130 and the second frame 155 is connected to the main guide part 110.

In addition, although the above described the unevenness is formed in the first tube 111 and the support 135 and the roller 173, the unevenness is formed only in the first tube 110 and the support 135 or only the roller 173 It may be formed, this will be apparent to those skilled in the art with reference to the present specification.

11: body part of the concrete chipping device 12: track
13: hoist 14: vertical
20: attachment 22: guide member
21: turning drive 23: injection unit
29: splash protection
100: extended water jet attachment 110: main guide portion
111: first tube 114: fastening portion
130: auxiliary guide portion 131: second tube
132: penetrating portion 135: support
136: Link 137: Guide
140: expansion cylinder 142: rod
150: first frame 151: guide line projection
155: second frame 160: expansion means
170: injection unit 171: bracket
172: motor 173: roller
175: nozzle

Claims (9)

In the waterjet attachment for removing old concrete,
A main guide part 110 formed to extend from side to side;
An auxiliary guide part 130 installed at at least one of both ends of the main guide part 110;
A spray unit 170 for spraying a water jet while moving from side to side along the main guide unit 110 and the auxiliary guide unit 130; And,
And expansion means (160) for moving the auxiliary guide portion (130) to increase or decrease the horizontal movement of the injection unit (170).
The auxiliary guide part 130 is installed on both sides of the main guide part 110,
The auxiliary guide part 130 of one side of the auxiliary guide part 130 of both sides is connected to the first frame 150 and the auxiliary guide part 130 of the other side is connected to the second frame 155,
The first and second frames 150 and 155 form a path through which the nozzle 175 of the injection unit 170 moves, and the portions except the path cover the surrounding concrete to prevent the removed concrete from splashing to the outside. ,
First and second frames 150 and 155 in a state where the first frame 150 is inserted inside the second frame 155 when the auxiliary guide 130 is moved left and right by the expansion means 160. Sliding relative to each other, the extended waterjet attachment, characterized in that the overall width of the first and second frames (150, 155) is adjusted. delete In the waterjet attachment for removing old concrete,
A main guide part 110 formed to extend from side to side;
An auxiliary guide part 130 installed at at least one of both ends of the main guide part 110;
A spray unit 170 for spraying a water jet while moving from side to side along the main guide unit 110 and the auxiliary guide unit 130; And,
And expansion means (160) for moving the auxiliary guide portion (130) to increase or decrease the horizontal movement of the injection unit (170).
The auxiliary guide portion 130 is installed only on one side of the main guide portion 110,
The auxiliary guide part 130 is connected to the first frame 150 and the main guide part 110 is connected to the second frame 155.
The first and second frames 150 and 155 form a path through which the nozzle 175 of the injection unit 170 moves, and the portions except the path cover the surrounding concrete to prevent the removed concrete from splashing to the outside. ,
First and second frames 150 and 155 in a state where the first frame 150 is inserted inside the second frame 155 when the auxiliary guide 130 is moved left and right by the expansion means 160. Sliding relative to each other, the extended waterjet attachment, characterized in that the overall width of the first and second frames (150, 155) is adjusted. In the waterjet attachment for removing old concrete,
A main guide part 110 formed to extend from side to side;
An auxiliary guide part 130 installed at at least one of both ends of the main guide part 110;
A spray unit 170 for spraying a water jet while moving from side to side along the main guide unit 110 and the auxiliary guide unit 130; And,
And expansion means (160) for moving the auxiliary guide portion (130) to increase or decrease the horizontal movement of the injection unit (170).
The main guide unit 110 includes a first tube 111,
The auxiliary guide unit 130,
A second tube 131 installed to be inserted into the first tube 111, and the inserted length is adjusted by the expansion means 160, and the through part 132 is elongated along the length direction;
An expansion cylinder 140 installed inside the second pipe 131; And,
The first state is installed so as to be elevated through the through-hole 132 by the expansion cylinder 140, and rises to the same height as the outer peripheral surface of the first tube 111, and lower than the inner peripheral surface of the first tube 111 And a support 135 including a second state of descending,
After the second tube 131 is moved outward by the expansion means 160, the expansion cylinder 140 is operated to raise the support 135 to the same height as the outer circumferential surface of the first tube 111 injection unit Since the 170 may move left and right along the first and second pipes 111 and 131, the horizontal movement of the injection unit 170 increases and
After the expansion cylinder 140 operates in reverse, the support 135 descends below the inner circumferential surface of the first pipe 131, and then the second pipe 131 is moved by the expansion means 160 to the first pipe 111. When moving toward the center of the extended waterjet attachment, characterized in that the left and right movement width of the injection unit 170 is reduced. The method of claim 4, wherein
Injection unit 170,
Motor 172; And,
And a roller 173 rotated by the rotational force transmitted from the motor 172 and traveling along the first and second tubes 111 and 131.
At least one of the outer circumferential surface of the first and second pipes (111) (131) and the outer circumferential surface of the roller (173) is formed with an unevenness for preventing slipping. The method of claim 4, wherein
First sensors are installed at both ends of the first tube 111, and second sensors are installed at the tip of the second tube 131.
When the auxiliary guide unit 130 is inserted into the main guide unit 110, the first sensor detects the injection unit 170 and transmits a signal to the control unit. To go to
When the auxiliary guide unit 130 is moved to the outside of the main guide unit 110, the second sensor detects the injection unit 170 and transmits the signal to the control unit, the control unit is the injection unit 170 in the opposite direction An extended water jet attachment, characterized in that to move to. (a) adjusting the width of the attachment corresponding to the width of the concrete to be removed; And,
(b) driving the spray unit 170 to remove concrete after the step (a);
In the step (a), the auxiliary guide part 130 is slid with respect to the main guide part 110 to adjust the width,
In the step (b), the injection unit 170 travels along the main guide part 110 or travels along the main guide part 110 and the auxiliary guide part 130.
In step (a),
(a1) moving the auxiliary guide part 130 to the outside of the main guide part 110 corresponding to the width of the concrete; And,
(a2) raising the support 135 to the same height as the main guide part 130 through the through part 132 of the auxiliary guide part 130;
In the step (b) the injection unit 170 concrete chipping method, characterized in that traveling along the support 135 and the main guide portion (110). delete (a) adjusting the width of the attachment corresponding to the width of the concrete to be removed; And,
(b) driving the spray unit 170 to remove concrete after the step (a);
In the step (a), the auxiliary guide part 130 is slid with respect to the main guide part 110 to adjust the width,
In the step (b), the injection unit 170 travels along the main guide part 110 or travels along the main guide part 110 and the auxiliary guide part 130.
The auxiliary guide part 130 is installed on both sides of the main guide part 110,
The auxiliary guide part 130 of one side of the auxiliary guide part 130 of both sides is connected to the first frame 150 and the auxiliary guide part 130 of the other side is connected to the second frame 155,
The first and second frames 150 and 155 are installed to be slidable with respect to each other and form a path through which the nozzle 175 of the injection unit 170 moves, and portions except the path are removed by covering the surrounding concrete. Prevents concrete from splashing to the outside,
In the step (a), when the auxiliary guide part 130 is moved left and right by the expansion means 160, the first frame 150 is slid in the state of being inserted into the second frame 155 and thus the first, The concrete chipping method, characterized in that the overall width of the two frames 150, 155 is adjusted.

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