JP2021126886A - Punching device - Google Patents

Abstract

To provide a punching device capable of punching a structure made of concrete while reducing the load of an operator.SOLUTION: A punching device comprises a body frame 10 having a rectangular solid shape with an opened front side, an elevation frame 20 provided so as to be elevated in the body frame 10 and a drifter 30 installed in the elevation frame 20 movably in a transverse motion and also movably forward and backward and drilling a structure S via the opened front side. The elevation frame 20 comprises a transverse motion member 40 transversely moving on the elevation frame 20, and the transverse motion member 40 comprises forward-backward member installed in the transverse motion member 40 so as to be reciprocated in a direction orthogonal in the movement direction of the transverse motion member 40 and moving the drifter 30 forward and backward.SELECTED DRAWING: Figure 2

Description

The present invention relates to a drilling device for drilling a concrete structure.

Seismic reinforcement work such as concrete structures that are in contact with the ground above ground, underground, or semi-underground, or concrete structures built on the ground near railways and roads, can be constructed from only one side. Is restricted.

As a construction method under such restrictions, a hole is drilled from one side of the structure, the hole is filled with a fixing material, and then a post-construction shear reinforcing bar (hereinafter referred to as "shear reinforcing bar") is inserted. There is a construction method that improves the shear strength of the structure by integrating it with the structure.

As a shear reinforcement method for a concrete structure, for example, Patent Document 1 (Japanese Unexamined Patent Publication No. 2016-037787) is known. The techniques described in Patent Document 1 include a drilling step of forming a bottomed reinforcing material insertion hole in a reinforced concrete wall, a loading step of loading a filler into the reinforcing material insertion hole, and a shear reinforcing material in the reinforcing material insertion hole. It is formed by the reinforcing material installation process to install. Then, in the loading step, the filler is continuously filled while increasing the pressure by using a filling jig provided with a presser diameter expanding portion at the tip of the discharge pipe. In the reinforcing material installation process, the shear reinforcing material is filled by pushing the shear reinforcing material into the filler in a state where the tip portion to which the tubular slide packing member of the shear reinforcing material is attached is pressed against the rear end portion of the filler. The tubular slide packing member is slid and moved toward the hole opening portion while increasing the pressure of the material.

Here, in the construction method of improving the shear strength of the structure with the shear reinforcing bar, a drilling device capable of drilling a relatively deep hole (for example, about 1 m) in the existing structure is used to embed the shear reinforcing bar. Be done. Specific drilling devices include a dripper that drills while applying striking force, rotational force, and thrust to a rod with a bit attached to the tip, and a rod with a cylindrical sawtooth bit attached to the tip that rotates and drills. There are core drills and so on.

Then, in the drilling work, the worker at the site firmly holds the handle and the side handle of the drilling device, which are heavy objects, with both hands, and then presses a bit against the drilling position of the structure to proceed with digging.

2016-037787

Now, in order to seismically retrofit a structure, it is necessary to make a large number of holes for embedding shear reinforcing bars. Then, the work using the conventional drilling device described above becomes heavy labor, and as a result, the work efficiency deteriorates.

The present invention has been made from the above-mentioned technical background, and an object of the present invention is to provide a drilling device capable of drilling a concrete structure while reducing the burden on an operator.

In order to solve the above problems, the drilling device of the present invention according to claim 1 has a main body portion having at least a rectangular parallelepiped shape with an open front surface, an elevating member provided so as to be able to elevate in the main body portion, and lateral movement. It is characterized by having a perforating means which is installed in the elevating member so as to be able to move forward and backward and which perforates a concrete structure through an open front surface.

In the invention according to claim 1, the drilling device of the present invention according to claim 2 can reciprocate between a traversing member that traverses on the elevating member and a direction orthogonal to the moving direction of the traversing member. It is characterized by further having an advancing / retreating member installed on the traversing member to advance / retreat the drilling means.

The drilling device of the present invention according to claim 3 is the invention according to claim 2, wherein the traversing member is a traversing guide rail provided in the elevating member extending in the lateral direction, and becomes longer in the front-rear direction. The drilling means is installed and the traverse body is slidably provided along the traverse guide rail, and the traverse body is screwed into the traverse body and rotationally driven by the traverse motor to slide and move the traverse body. It is characterized in that it is provided with a ball screw.

The drilling device of the present invention according to claim 4 is equipped with the advancing / retreating guide rail provided along the transverse body and the drilling means in the invention according to claim 3. It is characterized by including a slider provided so as to be slidable along the advancing / retreating guide rail, and an endless belt that is orbitally driven by an advancing / retreating motor to slide the slider.

In the invention according to any one of claims 1 to 4, the drilling device of the present invention according to claim 5 has a chain for suspending the elevating member and an elevating member for raising and lowering the chain. It is characterized by further having an elevating motor for raising and lowering.

The drilling device of the present invention according to claim 6 is installed in the main body portion in the invention according to any one of claims 1 to 5, and exerts a propulsive reaction force at the time of drilling the structure. It is characterized by further having a reaction force transmitting means for transmitting.

The drilling device of the present invention according to claim 7 is characterized in that, in the invention according to claim 6, the reaction force transmitting means is installed at an upper end portion of the main body portion.

The drilling device of the present invention according to claim 8 is attached to a traveling rail laid along the structure and a lower portion of the main body in the invention according to any one of claims 1 to 7. It is characterized by further having a plurality of rollers driven by a traveling motor and rolling on the traveling rail.

According to the present invention, a concrete structure can be drilled by the drilling means only by adjusting the height with the elevating member and adjusting the lateral direction, so that the structure S can be formed while reducing the burden on the operator. It becomes possible to pierce.

It is explanatory drawing which shows a part of the concrete structure which was seismically reinforced by inserting the shear reinforcing bar into the hole drilled by the drilling apparatus which concerns on one Embodiment of this invention. It is a side view which shows the drilling apparatus which concerns on one Embodiment of this invention. It is a front view of the drilling device of FIG. It is a top view of the drilling apparatus of FIG. It is sectional drawing along the VV line of FIG. It is sectional drawing along the VI-VI line of FIG. It is explanatory drawing which shows the arrangement of the chain provided in the drilling apparatus which concerns on one Embodiment of this invention.

Hereinafter, embodiments as an example of the present invention will be described in detail with reference to the drawings. In addition, in the drawing for demonstrating the embodiment, the same constituent elements are in principle given the same reference numerals, and the repeated description thereof will be omitted.

The drilling device A of the present embodiment is made of an existing concrete structure S in contact with the ground G as shown in FIG. 1, or an existing concrete structure constructed on the ground close to a building such as a railroad or a road. It is used to make a hole H from one side of a structure (not shown) as one step of reinforcement work. After filling the inside of the opened hole H with the fixing material M, the shear reinforcing bar R is inserted and integrated with the structure S to improve the shear strength of the structure S. As the shear reinforcing reinforcing bar R, for example, one side of a generally used reinforcing bar R1 is threaded, diagonally cut, and a hexagon nut (fixed body) R2 is attached to the tip end.

As shown in FIGS. 2 to 6, the drilling device A of the present embodiment includes a main body frame (main body portion) 10 formed of a rod-shaped steel material such as a column (square steel pipe) or H-shaped steel in a rectangular parallelepiped shape. Similarly, an elevating frame (elevating member) 20 which is formed of a rectangular steel material such as a column or H-shaped steel and is provided so as to be able to elevate in the main body frame 10, and a structure made of concrete in front of the elevating frame 20. It is provided with a drifter (perforation means) 30 for perforating an object S.

As shown in FIG. 3, the front and rear surfaces of the main body frame 10 are open, while as shown in FIGS. 2 and 5, girders 11 are attached to the side surfaces at a plurality of upper and lower locations (here, two locations). A brace (bracing) 12 is provided at the same time, and the required strength is secured. Further, as shown in FIGS. 4 and 6, the elevating frame 20 is composed of four frame rods 21 forming a rectangle, and extends vertically above the main body frame 10 as shown in FIGS. 2, 5 and 6. It is fitted into a guide rail 14 provided along the four pillar members 13, and moves up and down within the opening range on the front surface while being guided by the guide rail 14.

As shown in FIG. 5, the drifter 30 includes a rod 32 to which a bit 31 is attached to the tip thereof and a drifter main body 33 that applies striking force, rotational force, and thrust to the rod 32, with respect to a concrete structure S. To make a hole H having a predetermined depth. The drifter 30 can move laterally on the elevating frame 20 so that it can move to a desired position on the opened front surface, and can move forward and backward to drill a hole in the structure S through the opened front surface. It has become.

In the drifter 30 of the present embodiment, it is possible to make a relatively deep hole H having a depth of, for example, about 1 m. However, the depth of the hole H can be freely set, and is not limited to 1 m in the present embodiment.

Here, the traverse movement mechanism and the advance / retreat movement mechanism of the drifter 30 will be specifically described.

As shown in FIGS. 4 and 6, the elevating frame 20 is provided with a traversing member 40 that traverses on the elevating frame 20. Further, the traversing member 40 is provided with an advancing / retreating member 50 capable of reciprocating in a direction orthogonal to the moving direction of the traversing member 40. Then, the advancing / retreating member 50 advances / retreats the drifter 30, and the traversing member 40 traverses the advancing / retreating member 50, so that the drifter 30 can be traversed and reciprocated.

In FIG. 6, the traversing member 40 has a traversing guide rail 41 extending in the lateral direction along a frame rod 21 located at a rear portion forming a rectangular elevating frame 20, and the traversing member 40 is elongated in the front-rear direction. It includes a transverse body 42 that slides and moves the guide rail 41, and a ball screw 44 that is screwed into the transverse body 42 and is rotationally driven by the transverse motor 43. Further, the drifter 30 is installed on the transverse body 42 via the advancing / retreating member 50. Therefore, the rotation of the ball screw 44 causes the traversing body 42 to move along the traversing guide rail 41, so that the drifter 30 traverses the elevating frame 20 over the opening range on the front surface.

In FIGS. 4 and 6, the advancing / retreating member 50 is orbitally driven by an advancing / retreating guide rail 51 provided along the transverse body 42, a slider 52 that slides the advancing / retreating guide rail 51, and an advancing / retreating motor 53. The endless belt 54 for sliding the attached slider 52 is provided. Further, the drifter 30 is mounted on the slider 52. Therefore, the endless belt 54 orbits due to the rotation of the advancing / retreating motor 53, and the slider 52 moves along the advancing / retreating guide rail 51, so that the drifter 30 advances / retreats on the elevating frame 20. The endless belt 54 is a non-metal rubber belt in the present embodiment, but may be a metal belt.

Next, the elevating mechanism of the elevating frame 20 will be described.

As shown in FIG. 3, the elevating mechanism includes a chain 60 for suspending the elevating frame 20, an elevating motor 61 for raising and lowering the chain 60 to raise and lower the elevating frame 20, and a sprocket 62 on which the chain 60 is hung. Has been done.

The chain 60 is composed of a first chain 60a and a second chain 60b, one end of which is attached to the center of two opposite sides of the elevating frame 20, respectively. That is, as shown in FIGS. 3, 4 and 6, one end of the first chain 60a and the second chain 60b is a left and right frame rod 21 which is a component of the rectangular elevating frame 20. It is attached to the upper center. Further, the other ends of the first chain 60a and the second chain 60b are attached to the lower center of the frame rod 21 on the opposite side thereof.

The reason why the chain 60 is attached to the left and right frame rods 21 is that if the chain 60 is attached to the front and rear frame rods 21, it interferes with the drifter 30 that moves laterally.

Here, as shown in FIGS. 3 and 7, sprockets 62a and 62b are arranged in the center of the upper left and right in the front-rear direction on the main body frame 10, and the sprockets 62c and 62c are arranged in the center in the front-rear direction in the corresponding lower left and right. 62d is arranged. Further, the sprocket 62e is arranged between the elevating motor 61 and the sprocket 62d located in the vicinity of the elevating motor 61, and at a position slightly higher than the sprocket 62d. Further, a drive sprocket 61a is attached to the elevating motor 61.

The sprocket 62b, 62d, 62e on the side where the drive sprocket 61a and the elevating motor 61 are located (on the right side in the figure) are single and double sprockets in which the two sprockets are coaxially integrated. Therefore, two chains 60 (first chain 60a, second chain 60b) can be hung. Further, the sprockets 62a and 62c on the opposite side (left side in the drawing) are only one single sprocket, and only the first chain 60a can be hung.

Then, as shown in FIG. 3, the first chain 60a sequentially extends upward from the upper mounting position on the left side of the elevating frame 20 to the sprocket 62a, the sprocket 62b, the sprocket 62e, the drive sprocket 61a, the sprocket 62d, and the sprocket 62c. It is hung and reaches the lower mounting position on the left side of the elevating frame 20. Further, the second chain 60b is sequentially hung on the sprocket 62b, the sprocket 62e, the drive sprocket 61a and the sprocket 62d upward from the mounting position on the right side of the elevating frame 20, and is placed at the lower mounting position on the right side of the elevating frame 20. It has reached.

In FIG. 3, when the elevating motor 61 rotates clockwise to rotate the first chain 60a and the second chain 60b, the elevating frame 20 is lifted by these chains 60 and ascended. Similarly, in FIG. 3, when the elevating motor 61 rotates counterclockwise and the first chain 60a and the second chain 60b orbit in opposite directions, the elevating frame 20 is suspended by these chains 60 and lowered. do.

By the way, as shown in FIGS. Power transmission means) 70 is installed. The reaction force transmitting unit 70 includes a suction pad 71 that is attracted to the structure S by a negative pressure suction force of a vacuum pump (not shown), and a slide jack 72 that moves the suction pad 71 forward and backward. Then, at the time of drilling, the suction pad 71 is extended forward by the slide jack 72 and pressed against the structure S, and the suction pad 71 is attracted to the structure S by the vacuum pump, so that the structure S is drilled by the drifter 30. Propulsion reaction force is obtained, and it becomes possible to perform drilling smoothly.

It is desirable that the reaction force transmitting portions 70 are installed at two locations on the left and right of the upper end portion of the main body frame 10 as in the present embodiment, but one location on either the left or right side of the upper end portion and one location on the upper end central portion. , Or it may be installed at a place other than the upper end.

By the way, as shown in FIGS. 2, 3 and 5, in the drilling device A of the present application, the traveling rail 80 is laid along the concrete structure S to be drilled. A plurality of (four in the present embodiment) rollers 82 that are driven by the traveling motor 81 and roll on the traveling rail 80 are attached to the lower portion of the main body frame 10. The rollers 82 are two drive rollers 82a (see FIGS. 2, 3, and 6) mounted coaxially with a travel drive shaft 84 that is rotationally driven by a travel motor 81 via a belt 83, and drive rollers. It is composed of two driven rollers 82b (see FIGS. 3 and 6) that are arranged at opposite positions of 82a and rotate according to the rotation of the driving roller 82a.

When the drilling device A having the above configuration is used to make a hole H for inserting the shear reinforcing reinforcing bar R into the concrete structure S, the drilling device A is moved on the traveling rail 80 to form the drilling device A in the structure S. Move to the perforation position of. Then, the suction pad 71 is extended forward by the slide jack 72 and pressed against the structure S to be sucked. Next, the elevating motor 61 moves the elevating frame 20 to the drilling height, and the traversing motor 43 moves the traversing body 42 to align the drifter 30 with the drilling position.

Then, the power of the drifter 30 is turned on, the slider 52 is slid and moved by the advancing / retreating motor 53 to move the drifter 30 forward, and the bit 31 at the tip of the rod 32 is pressed against the drilling position of the structure S to drill.

When the drilling is completed, the slider 52 is moved in the direction away from the structure S to move the drifter 30 backward, and the drifter 30 is returned to the standby position. Then, when the next drilling position is in the vertical direction, drilling is performed while raising and lowering the elevating frame 20. When the next drilling position is in the lateral direction, drilling is performed while moving the transverse body 42 in the lateral direction.

As described above, according to the drilling device A of the present embodiment, the concrete structure S can be drilled by the drifter 30 only by adjusting the height by the elevating frame 20 and adjusting the lateral direction. It becomes possible to drill the structure S while reducing the burden on the operator.

Although the invention made by the present inventor has been specifically described above based on the embodiments, the embodiments disclosed in the present specification are exemplary in all respects and are limited to the disclosed technology. is not it. That is, the technical scope of the present invention is not limitedly interpreted based on the description in the above-described embodiment, but should be interpreted according to the description of the claims, and the scope of claims. All changes are included as long as they do not deviate from the description technology and the technology equivalent to the above and the gist of the claims.

For example, in the present embodiment, the drifter 30 is used as the drilling means, but the present invention is not limited to this. That is, various drilling means capable of drilling a concrete structure S, such as a core drill in which a cylindrical saw tooth bit is rotated and drilled by a rod attached to the tip thereof, can be applied.

Further, although the front and rear surfaces of the main body frame 10 of the present embodiment are open, it is sufficient that at least the front surface is open. Therefore, the rear surface and the side surface may be open or closed.

Further, in the present embodiment, the main body frame 10 which is a rod-shaped steel material is shown as an example of the main body portion, and the elevating frame 20 which is a rod-shaped steel material is shown as an example of the elevating member. It may be composed of.

Further, in the present embodiment, the chain 60 is of a circular type, but one end of the chain 60 is attached to the elevating frame 20 and the other end is attached to the rotating shaft of the elevating motor 61 for elevating. It may be a winding type in which the elevating frame 20 is moved up and down by being wound and rewound by the motor 61.

In the above description, the case where the drilling device of the present invention is used for drilling a hole for inserting a shear reinforcing bar into an existing structure made of concrete is shown, but the present invention is not limited thereto. , Can be widely applied to drilling holes in concrete structures.

10 Body frame (main body)
11 Girder 12 Brace 13 Pillar 14 Guide rail 20 Lifting frame (lifting member)
21 Frame rod 30 Drifter (perforation means)
31 Bit 32 Rod 33 Drifter body 40 Traverse member 41 Traverse guide rail 42 Traverse body 43 Traverse motor 44 Ball screw 50 Advancing / retreating member 51 Advancing / retreating guide rail 52 Slider 53 Advancing / retreating motor 54 Endless belt 60 Chain 60a First chain 60b Second chain 61 Lifting motor 61a Drive sprocket 62, 62a, 62b, 62c, 62d, 62e Sprocket 70 Reaction force transmission unit (reaction force transmission means)
71 Suction pad 72 Slide jack 80 Travel rail 81 Travel motor 82 Roller 82a Drive roller 82b Driven roller 83 Belt 84 Travel drive shaft A Drilling device H Hole R Shear reinforcement Reinforcing bar S Structure

Claims (8)

At least the main body, which has the shape of a rectangular parallelepiped with an open front,
An elevating member provided so as to be able to elevate in the main body,
A drilling means that is installed on the elevating member so that it can move in a traverse manner and can move forward and backward, and punches a concrete structure through an open front surface.
A drilling device characterized by having. A traversing member that traverses on the elevating member and
Further having an advancing / retreating member installed on the traversing member so as to be reciprocating in a direction orthogonal to the moving direction of the traversing member and advancing / retreating the drilling means.
The drilling device according to claim 1. The traversing member is provided with a traversing guide rail extending in the lateral direction in the elevating member, the drilling means extending in the front-rear direction, and slidably movable along the traversing guide rail. A ball screw that is screwed into the traversing body and is rotationally driven by a traversing motor to slide the traversing body is provided.
2. The drilling device according to claim 2. The advancing / retreating member is rotated by an advancing / retreating guide rail provided along the transverse body, a slider on which the drilling means is mounted and slidably provided along the advancing / retreating guide rail, and an advancing / retreating motor. Provided with an endless belt that is driven to slide the slider.
3. The drilling device according to claim 3. A chain that suspends the elevating member and
Further having an elevating motor for raising and lowering the chain to raise and lower the elevating member.
The drilling device according to any one of claims 1 to 4, wherein the drilling device is characterized. It is further provided with a reaction force transmitting means which is installed in the main body and transmits a propulsive reaction force at the time of drilling to the structure.
The drilling device according to any one of claims 1 to 5, wherein the drilling device is characterized. The reaction force transmitting means is installed at the upper end of the main body.
6. The drilling device according to claim 6. A traveling rail laid along the structure and
It further has a plurality of rollers attached to the lower part of the main body and driven by a traveling motor to roll on the traveling rail.
The drilling apparatus according to any one of claims 1 to 7.

Images