JP7341092B2 - anchor driving rod - Google Patents

Description

The present invention relates to an anchor driving rod .

Generally, anchor driving work is required when attaching equipment such as brackets and lighting fixtures to the walls of structures such as concrete. Specifically, after drilling a hole to a predetermined depth in a wall using a hammer drill or the like, an anchor is driven into the hole, and the equipment is fixed to the wall using bolts and nuts attached to the anchor. Conventionally, anchor driving is performed by an operator using a hammer, or by connecting a dedicated anchor driving rod to a power tool such as a hammer drill that has a striking action.

As a prior art document of the above-mentioned anchor driving rod, there is an anchor driving tool disclosed in Japanese Patent Application Laid-open No. 2009-264007 (Patent Document 1). This Patent Document 1 aims to provide an anchor driving tool and an anchor driving unit that can perform anchor driving work with a simple, compact, and lightweight structure. In order to solve this problem, Patent Document 1 states, ``The tool is connected to a tool drive machine via a tool connection member, receives the driving force from the tool drive machine, and drills a hole for driving an anchor into a building material. An anchor driving tool for driving an anchor, comprising a held part that is detachably held by the tool connecting member, and a held part that extends in one direction from the held part and rotates about an axis parallel to the longitudinal direction of the held part. a drill part having a shape to drill a hole for driving the anchor into the building material by applying driving force from the tool driver; and a drill part extending from the held part to the side opposite to the drill part, the center of the drill part. and a hammer portion having a shape to strike the anchor and drive the anchor into the hole by applying a vibration force in a direction parallel to the axis from the tool driving machine. .

Japanese Patent Application Publication No. 2009-264007

Anchor driving is a task that is relatively often performed on unstable and narrow scaffolding, so improvements in work efficiency and safety are required. In addition, in recent years, the decline in the number of construction companies due to the declining birthrate and aging population has become a problem, and there is a need for labor-saving and improved work efficiency in construction work.
When driving an anchor, the operator must support the anchor with one hand, align it with the prepared hole in the wall, and operate the anchor striking device with the other hand. Therefore, if the hand supporting the anchor is accidentally struck, or if the anchor is not supported sufficiently, the anchor may fall.
Additionally, when driving an anchor, the nut is usually not attached to the anchor's bolt (male thread), and after the driving is complete, the nut is attached and the nut is tightened. There is. When using anchor driving tools, from the perspective of reducing man-hours, prepare a large number of anchor bolts with nuts attached, and use the anchors with these nuts attached to drive the anchor. It is possible to do this. However, the nut attached to the bolt part of the anchor inadvertently moves toward the wall due to the impact vibration of the anchor striking device, and the nut comes into contact with the wall before the anchor is driven to the specified depth. If it is removed, there is a problem that it becomes impossible to drive any more anchors.

The anchor driving tool described in Patent Document 1 is a tool that is equipped with a drill on one side and a hammer surface on the other side, so that drilling for anchor driving and anchor driving work can be performed using a single tool. However, it is necessary for the operator to support the anchor with one hand and operate the anchor striking device with the other hand. Furthermore, Patent Document 1 does not take into consideration the fact that a nut is pre-installed on the bolt part of the anchor when driving the anchor, and the nut is not considered when the nut is pre-installed on the bolt part of the anchor. The rotation of is not considered at all.

An object of the present invention is to eliminate the need for a worker to support the anchor by hand when driving the anchor into a wall using a striking device, and to drive the anchor into the wall at a predetermined depth by attaching a nut to the male threaded portion in advance. To provide an anchor driving rod that can be driven upright.

In order to achieve the above object, the anchor driving rod of the present invention is constructed as described in the claims.
Specifically, the anchor driving rod is, for example, an anchor driving rod that is connected to a striking device and drives an anchor with a nut attached into a hole in a wall, and the anchor driving rod grips the anchor. The gripping part includes a gripping part and a connecting part connected to a striking device, and the gripping part has a nut rotation prevention mechanism that prevents rotation of the nut in a state in which the anchor is gripped. For example, the nut rotation prevention mechanism includes a pin plunger, and the part of the pin plunger's outer periphery that is closest to the longitudinal axis of the gripping part is outside the inscribed circle of the nut when the gripping part grips the anchor. , and located inside the circumscribed circle of the nut. Two pin plungers are provided, and in each of the two pin plungers, the portion of the outer periphery of the pin closest to the longitudinal axis of the gripping portion is outside the inscribed circle of the nut when the gripping portion grips the anchor, The two pin plungers are located inside the circumscribed circle of the nut, and are arranged at a position where the two pin plungers are not simultaneously pushed in by the nut when the grip portion grips the anchor.

According to the present invention, when driving an anchor into a wall surface using a striking device, there is no need for the operator to support the anchor by hand, and the anchor, which has a nut attached to the male screw portion in advance, is inserted into the wall surface at a predetermined depth. It is now possible to type in
Problems, configurations, and effects other than those described above will be made clear by the following description of the embodiments.

It is a perspective view of the anchor driving rod of the Example of this invention. It is a front view of the anchor driving rod of the Example of this invention. It is a side view of the anchor driving rod of the Example of this invention. It is a side view showing an example of an anchor. FIG. 2 is a perspective view of an anchor being gripped by an anchor driving rod according to an embodiment of the present invention. FIG. 4 is a cross-sectional view of the anchor driving rod taken along the line AA shown in FIG. 3. FIG. 3 is a sectional view of the anchor driving rod taken along the line BB shown in FIG. 2; FIG. 3 is a sectional view of the anchor driving rod taken along the line CC shown in FIG. 2; FIG. 3 is a front view of the anchor inserted into the grip of the anchor driving rod according to the embodiment of the present invention (when one corner of the nut attached to the anchor is between two pin plungers). FIG. 2 is a front view of the anchor inserted into the grip of the anchor driving rod according to the embodiment of the present invention (when the nut attached to the anchor is located directly above one pin plunger and the pin plunger is pushed down) ). It is a perspective view of the state (state of FIG. 10) in which the anchor was inserted into the grip part of the anchor driving rod of the Example of this invention. FIG. 3 is a diagram showing a state in which the anchor driving rod is connected to a driving device and the anchor is gripped by the anchor driving rod. FIG. 2 is a diagram of an anchor platform loaded with a plurality of anchors. 1 is a flowchart showing the basic flow of an anchor driving method using an anchor driving rod according to an embodiment of the present invention. 15 is a schematic diagram showing the operation of step S3 shown in FIG. 14. FIG. FIG. 15 is a schematic diagram showing the operation from step S4 to step S7 shown in FIG. 14. FIG.

First, before explaining the embodiments of the present invention in detail, the circumstances leading to the present invention will be explained. The present invention was developed in the process of studying automation of anchor driving work using a robot arm, but is not limited to automation of anchor driving work using a robot arm, and is not limited to automation of anchor driving work using a robot arm. It can also be applied to work.
As described above, anchor driving is a work that is relatively often performed on unstable and narrow scaffolding, and therefore improvements in work efficiency and safety are required. In addition, in recent years, the decline in the number of construction companies due to the declining birthrate and aging population has become a problem, and there is a need for labor-saving and improved work efficiency in construction work.
Against this background, the present inventors have considered automating the anchor driving work using a robot or the like. As an example of a configuration in which a robot is used to automate anchor driving work, a striking device (hitting section) is provided at the tip of a robot arm, and the anchor driving work is performed by the striking device (hitting section). When automating the anchor driving work in such a configuration, an issue to be considered is how to grip the anchor to be driven. To simulate the anchor driving work performed by a worker, it is possible to make the robot have two arms, gripping the anchor with one hand and gripping the striking device (striking part) with the other while driving the anchor, but it is possible to do the anchor driving work using two arms. Robots become more complex as they require more work. Therefore, if an anchor driving rod (gripping part) that can grip the anchor is connected to the striking device (hitting part), the driving work can be done by a single-bowl robot, and the robot will not be complicated (the robot can be made into a single-bowl type). If there is, the operator will be able to support the anchor striking device with both hands during driving work.) Therefore, the present inventors have previously proposed an anchor driving device as Japanese Patent Application No. 2019-223646. In this anchor driving device, an anchor striking device is installed at the tip of a robot arm, and the anchor striking device is composed of a striking section and an anchor gripping section connected to the striking section. By connecting the gripping part that grips the anchor to the striking part, anchor driving work can be performed with one robot arm without complicating the mechanism.
As mentioned above, when driving an anchor, the nut is usually not attached to the male thread of the anchor, and after the driving process is completed, the nut is attached and the nut is tightened. . However, in this case, after driving the anchor, the robot is required to perform the work of attaching the nut to the male threaded portion, which makes the robot complicated. Even in the anchor driving work performed by an operator, the number of man-hours can be reduced by performing the anchor driving work using an anchor with a nut attached. However, according to the studies of the present inventors, if the anchor is simply gripped by the anchor gripping part, the nut attached to the male threaded part of the anchor may be inadvertently moved toward the wall due to the impact vibration of the anchor hitting part. A problem was discovered in which the nut may come into contact with the wall surface before the anchor is driven to a predetermined depth, making it impossible to drive the anchor any further. This is particularly an obstacle to automating anchor driving work using robots. Therefore, the present inventors developed an anchor gripping part that allows the anchor to be driven into a wall to a predetermined depth even when using an anchor equipped with a nut suitable for improving workability. It was discovered that it is important to provide a mechanism to prevent rotation of the nut.

Hereinafter, the anchor driving rod of the present invention and the anchor driving method using the same will be explained based on the illustrated embodiments. In addition, in each figure, the same code|symbol is attached|subjected to the same structure, and when description overlaps, the description may be abbreviate|omitted. Note that in this embodiment, the "anchor driving rod" corresponds to the gripping part that grips the anchor in Japanese Patent Application No. 2019-223646. The gripping portion that grips the anchor of this embodiment in the following description corresponds to the portion that grips the anchor (the portion of the gripping portion excluding the connection axis) in Japanese Patent Application No. 2019-223646. That is, in this embodiment, the "anchor driving rod" is composed of a connecting shaft connected to a striking device (anchor striking section) and a grip section that grasps the anchor (details will be described later).

First, FIG. 4 shows an example of the anchor 1 driven into a prepared hole drilled in a wall surface by the anchor driving rod 100 of this embodiment. FIG. 4 is a schematic diagram (side view) of the anchor 1 used in the description of this embodiment. Although the anchor 1 in FIG. 4 is a wedge type anchor, it may be of any type as long as it is a driving type anchor. In the configuration example of the anchor shown in FIG. 4, the anchor 1 includes a male screw portion 2 into which a nut 3 is screwed into the head, and a three-sided wedge 4 which is attached to the insertion end of the anchor 1 in an annular manner and whose legs can be opened. It consists of When driving the anchor 1, normally, the anchor 1 is inserted into a pilot hole with the same diameter as the anchor 1 drilled in the wall using a hammer, the nut 3 is tightened, and the three-sided wedge 4 is inserted into the wall. opens its legs and anchor 1 is fixed. Conventionally, when the anchor 1 is inserted by impact with a hammer or the like, the nut 3 is not attached to the male threaded portion 2, but the nut 3 is attached to the male threaded portion 2 after the impact insertion. In the present invention, when inserting the anchor 1 by impact, the nut 3 is attached to the male threaded portion 2 in advance.

<Configuration of anchor driving rod>
Next, the structure of the anchor driving rod 100 according to the embodiment of the present invention will be explained. A perspective view, a front view, and a side view of an anchor driving rod 100 according to an embodiment of the present invention are shown in FIG. 1, FIG. 2, and FIG. 5, details of the gripping portion of the anchor driving rod 100 are shown in FIGS. 6 and 7, and details of the mechanism for preventing accidental rotation of the nut attached to the anchor in the anchor driving rod 100 are shown in FIGS. It is shown in FIG. Further, FIG. 12 shows a state in which the anchor driving rod 100 is connected to the striking device 10 and the anchor 1 is gripped by the anchor driving rod 100.

As shown in FIGS. 1 and 3, the anchor driving rod 100 of this embodiment includes a gripping portion 101 that grips the anchor 1 and a connecting shaft 102 that is a connecting portion between the anchor driving rod 100 and the impact device 10. Become. Note that, as an example of the striking device 10 in this embodiment, a hammer drill having a striking mode capable of applying a striking force perpendicularly to the anchor driving rod 100 is assumed. As shown in FIG. 5, the connecting shaft 102 and the longitudinal axis of the anchor 1 gripped by the gripping part 101 are held coaxially and connected. Normally, the striking shaft of the striking device 10 and the connecting shaft 102 of the anchor driving rod 100 are connected on the same axis, so by operating the striking shaft of the striking device 10 in the driving direction, the striking force can be adjusted to drive the anchor. It can be transmitted to the anchor 1 via the rod 100 and the anchor 1 can be driven.

The details of the grip portion 101 of the anchor driving rod 100 will be explained.
First, a mechanism for gripping the anchor in the gripping section 101 will be explained. A hollow portion 103 into which the male threaded portion 2 of the anchor 1 is inserted is formed at the center of the grip portion 101 of the anchor driving rod 100 in the longitudinal direction. The hollow part 103 is formed so that its inner diameter is slightly larger (for example, about 0.1 to 0.4 mm) than the diameter of the anchor 1 to be gripped (the outer diameter of the male threaded part 2). When performing driving work using anchors 1 having different diameters, a plurality of anchor driving rods 100 having hollow portions 103 corresponding to the diameters of the anchors 1 used are prepared and used properly. Further, as shown in FIGS. 2 and 6, ball plungers 104 are positioned at equal intervals of 120 degrees with respect to the cross section of the anchor 1 to be gripped, and the anchor 1 is supported at three points. Note that FIG. 6 is a cross-sectional view taken along line AA in FIG. 3. As shown in FIG. 7, the set of three-point supported ball plungers is provided at three locations: the front, the center, and the rear of the hollow portion 103. The number of sets of three-point supported ball plungers 104 is not particularly limited, and at least one set is sufficient. Note that FIG. 7 is a cross-sectional view taken along line BB in FIG. 2.

Such a structure of the grip portion 101 of the anchor 1 allows the longitudinal axis of the anchor 1 and the connection axis 102 (impact axis) of the anchor driving rod 100 to be coaxial. The ball plunger 104 is composed of a cylindrical housing, a spring placed inside the housing, and a ball installed at the tip of the spring. When a load is applied to the ball, the ball sinks into the housing. When the ball is pressed in and the load is removed, the restoring force of the spring inside the housing causes the ball to protrude back to its original position. A plurality of holes (in this embodiment, a total of nine screw holes, three in the circumferential direction and three in the longitudinal direction) are formed in the gripping portion 101 for installing the ball plunger 104. When the anchor 1 is inserted into the hollow part 103 of the gripping part 101, the balls at the tips of the plurality of ball plungers 104 clamp the anchor 1 with a force that pushes it in the direction of the central axis, and the male screw part 2 of the anchor 1 The ball is caught in the valley, creating a mechanism that provides an appropriate gripping force. Further, when the anchor 1 is attached to the anchor driving rod 100, the head of the male threaded portion 2 of the anchor 1 comes into contact with the bottom surface 103a of the hollow portion 103 of the grip portion 101. Since the force when striking the anchor 1 is transmitted from the bottom surface 103a of the hollow part 103 of the gripping part 101 to the anchor 1 (the head of the male screw part 2), a large load is not applied to the ball plunger 104 itself. Note that, when the anchor 1 is attached to the anchor driving rod 100, the head of the male threaded part 2 of the anchor 1 comes into contact with the bottom surface 103a of the hollow part 103 of the grip part 101, so that it is attached to the anchor 1. The position of the nut 3 is such that the length L from the head side surface of the nut 3 to the head of the male screw part 2 (see FIG. 4) is the depth of the hollow part 103 (from the bottom surface 103a of the hollow part to the grip part 101). The length up to the anchor insertion side surface (the surface facing the nut 3 when gripping the anchor) 101a is adjusted to be greater than or equal to the length up to the anchor insertion side surface 101a (the surface facing the nut 3 when gripping the anchor). In other words, when the anchor 1 is gripped by the gripping part 101, the nut 3 is held in such a way that the nut 3 does not come into contact with the gripping part 101 until the tip of the anchor facing the gripping part 101 comes into contact with the bottom surface 103a of the gripping part 101. The attachment position with respect to the anchor 1 has been adjusted.

Note that the mechanism for gripping the anchor in the grip portion 101 is not limited to a configuration using a ball plunger. In the case of a metal anchor, for example, the anchor may be held (grasped) by the anchor driving rod using magnetic force.

Next, a mechanism for preventing inadvertent rotation of a nut attached to an anchor due to vibration during anchor driving will be described.
As described above, the anchor driving operation in the present invention is performed with a nut attached to the anchor in advance. This reduces the number of man-hours required for anchor driving. However, according to studies by the present inventors, the nut attached to the male threaded part of the anchor was inadvertently moved toward the wall due to the impact vibration of the anchor's impact device, and the anchor did not reach a predetermined depth. There is a problem in that the nut comes into contact with the wall surface before being driven in, making it impossible to drive the anchor any further.

Therefore, in this embodiment, a mechanism (nut rotation prevention mechanism) for preventing the rotation of the nut during impact work is provided in the grip portion 101 of the anchor driving rod 100. In this embodiment, pin plungers 105a and 105b are provided on the grip portion 101 as a mechanism to prevent the nut from rotating inadvertently.

The pin plungers 105a and 105b are installed in pin plunger insertion holes provided along the longitudinal direction of the gripping portion 101, as shown in FIG. Note that FIG. 8 is a cross-sectional view taken along line CC in FIG. 2. The pin plungers 105a and 105b have the same mechanism as the ball plunger 104 described above, that is, a cylindrical housing (pin plunger body), a spring disposed inside the housing, and a retractable pin installed at the tip of the spring. When a load is applied to this telescoping pin, the telescoping pin sinks into the housing, and when the load is removed, the telescoping pin protrudes back to its original position due to the restoring force of the spring inside the housing, resulting in a pin telescoping structure. There is. Further, as shown in FIG. 3, the pin plungers 105a and 105b are each fixed at two locations within the pin plunger insertion hole by set screws 105c. The pin plungers 105a and 105b may be fixed in the pin plunger insertion holes by adhesive, press-fitting, or the like. Note that the annular portion 101b of the gripping portion 101 that protrudes beyond the anchor insertion side surface 101a has a function of protecting the pin plungers 105a and 105b when the anchor driving rod 100 falls. However, the annular portion 101b may not be provided. If the anchor driving work is to be automated by a robot, the robot must also recognize the annular portion 101b when attaching the anchor 1 to the gripping portion 101, so it is more suitable for automation by the robot to not provide the annular portion 101b. In some cases.

FIG. 9 is a front view (anchor insertion side) of the state in which the anchor 1 is inserted into the grip portion 101 of the anchor driving rod 100. As shown in FIG. 9, the gripping part 101 includes pin plungers 105a and 105b, which are located at the portion closest to the longitudinal axis of the gripping part 101 (the outer periphery of each of the pin plungers 105a and 105b). (the portion closest to the longitudinal axis) is located outside the inscribed circle 3a of the nut 3 and inside the circumscribed circle 3b of the nut 3 when the anchor 1 is gripped. When driving work using anchors 1 with different sizes of attached nuts 3 as well as the diameter of the hollow part, an anchor driving rod 100 with a pin plunger arranged at a position corresponding to the size of the attached nut 3 is used. You will need to prepare several and use them accordingly.

In FIG. 9, one corner of the nut 3 attached to the anchor 1 is between the pin plungers 105a and 105b, and the retractable pins of the pin plungers 105a and 105b are in an extended (natural length) state. When vibration is applied to the anchor 1 during anchor driving, one of these telescoping pins comes into contact with one side of the nut 3, so the telescoping pin becomes an obstacle and the nut 3 cannot rotate any further.

Furthermore, when the anchor 1 is inserted into the gripping part 101, even if the nut is located directly above the pin plunger 105a as shown in FIG. Since it does not interfere with the nut 3 attached to the anchor 1, it does not interfere with the gripping of the anchor 1 by the gripping part 101 (hollow part 103). Furthermore, when the nut 3 begins to rotate due to vibrations during anchor driving, the position of the corner of the nut 3 is shifted, and the retractable pin of the pin plunger 105a, which had been contracted, is extended to its original natural length position. Therefore, the state shown in FIG. 9 is reached, and the pin plunger 105a or 105b comes into contact with one side of the nut 3, making it possible to prevent the nut 3 from rotating inadvertently.

FIG. 11 is an oblique view of the state shown in FIG. As shown in FIG. 11, when the pin plunger 105a and the pin plunger 105b are unloaded, the telescopic pin length is about the height of the nut 3. This is preferable because it does not come off the sides of the pin plunger 105a and the telescopic pin of the pin plunger 105b. Note that the lengths of the telescopic pins of the pin plunger 105a and the pin plunger 105b under no load are set in consideration of the position of the nut 3 attached to the anchor 1 when the anchor 1 is attached to the anchor driving rod 100. Ru.

In this embodiment, a case has been described in which there are two pin plungers, but the above-mentioned functions can be obtained as long as there is at least one pin plunger. However, in the case of one pin, compared to the case of two pin plungers, when the pin plunger is initially compressed by the nut 3, the nut rotates due to the vibration when driving the anchor, and the position of the corner of the nut 3 shifts, It must be noted that the retractable pin of the pin plunger, which had been contracted, extends to its original natural length position, and the angle at which the nut rotates until it comes into contact with one side of the nut 3 is doubled. This means that when there are two pin plungers, when the anchor 1 is gripped by the gripping part 101, if the two pin plungers are in the position where they are simultaneously pushed (compressed) by the nut, only one pin plunger will be used. Since it can be said that the structures are similar, it means that it is better to arrange the two pin plungers in a position where they are not pushed (compressed) by the nut at the same time. Further, a pin plunger may be provided over the entire anchor insertion side surface 101a of the grip portion 101 like a universal socket wrench. In this case, the nut hardly rotates due to vibration when driving the anchor.

Furthermore, the mechanism for preventing inadvertent rotation of the nut attached to the anchor due to vibrations during anchor driving is not limited to one using a pin plunger. For example, the inner side of the annular portion 101b of the gripping portion 101 is made polygonal so that when the nut 3 rotates, the apex of the outer shape of the nut 3 contacts the side of the polygon, thereby preventing further rotation of the nut 3. be able to. Further, in the case of a metal nut, the rotation of the nut 3 may be suppressed using, for example, magnetic force.

In the present embodiment described above, the anchor driving rod 100 can be constructed without complicating the mechanism for gripping the anchor 1 and the mechanism for preventing rotation of the nut 3 attached to the anchor 1.
By configuring the anchor driving rod 100 as in this embodiment, the series of operations of gripping and driving the anchor 1 need not be performed while supporting the anchor 1 with one hand, and can be achieved safely and efficiently. be able to. That is, since the anchor driving rod 100 itself can grip and support the anchor 1, the striking device 10 can be supported with both hands when driving the anchor, and the anchor 1 can also be prevented from falling, resulting in safety. Able to perform work. In addition, since it is possible to prevent the nut 3 from rotating inadvertently due to vibrations when driving the anchor, there is no need to interrupt the installation and removal work of the nut 3 before or after the work, and the work during driving, which contributes to improved work efficiency.
Furthermore, since the anchor 1 can be gripped without depending on the initial angle of the nut 3 attached to the anchor 1, it becomes easy to introduce automation into the anchor driving work using a robot arm.

<Anchor driving method>
Next, an anchor driving method in which the anchor 1 is driven into a prepared hole 31 drilled in the wall surface 30 using the above-mentioned anchor driving rod 100 will be explained based on FIGS. 13 to 16. FIG. 13 shows an anchor stand 20 suitable for the anchor driving method of this embodiment, FIG. 14 is a flowchart showing the basic flow of the anchor driving method using the anchor driving rod 100 described above, and FIG. FIG. 16 is a schematic diagram showing the operation in some steps of the anchor driving method of this embodiment.

First, the number of anchors 1 to be used is loaded into an anchor stand 20 as shown in FIG. 13 (step S1). An anchor 1 with a nut 3 attached thereto is loaded onto the anchor base 20. At this time, the position of the nut 3 in the male threaded portion 2 of the anchor 1 is adjusted so that the length L shown in FIG. 4 is equal to or greater than the depth of the hollow portion 103. Further, the position of the nut 3 at this time is also adjusted as the position where the side surface of the telescoping pin contacts when the pin plunger is in an unloaded state when the anchor 1 is gripped by the anchor driving rod. In order to easily ensure a uniform predetermined length L, the anchor loading height H when the anchor 1 is loaded onto the anchor stand 20 is adjustable. The anchor loading height H is the distance from the tip of the anchor 1 to the bottom surface of the nut 3. When loading the anchor 1 onto the anchor base 20, the tip of the anchor 1 is arranged so as to be in contact with the lower surface of the anchor base 20, and the bottom surface of the nut 3 is arranged so as to be in contact with the upper surface of the anchor base 20. This ensures that each anchor 1 has a uniform predetermined length L.

Next, the anchor driving rod 100 is connected to the tip of the striking device 10 (step S2). Subsequently, the loaded anchor 1 is grasped and lifted from the anchor stand 20 (step S3). (a), (b), and (c) in FIG. 15 are schematic diagrams showing the operation of step S3 described above.

Thereafter, while holding the anchor 1, the striking device 10 is brought to the vicinity of the prepared hole 31 on the wall surface 30, and the tip of the anchor 1 is inserted into the prepared hole 31 (step S4). Then, the striking device 10 is driven to start driving the anchor 1 through the anchor driving rod 100 (step S5). After driving the anchor 1 to a predetermined depth (for example, 80 mm or more) (step S6), the striking device 10 is moved to the starting position for driving the anchor 1 (step S7). At this time, the anchor 1 driven into the pilot hole 31 of the wall surface 30 cannot be easily pulled out due to friction with the wall surface 30, so the anchor 1 is separated from the grip part 101 of the anchor driving rod 100. (a), (b), and (c) in FIG. 16 are schematic diagrams showing the operation of steps S4 to S7 described above.

With this, the anchor driving operation of driving the anchor 1 into the pilot hole 31 bored in the wall surface 30 using the anchor driving rod 100 is completed. In addition, in the anchor driving method shown in FIG. 14, the anchor stand 20 is used, but it is not essential. The anchor stand 20 is used to make it easier to grip the anchor 1 with the grip portion 101 of the anchor driving rod 100 and to improve workability. Therefore, if the anchor base 20 is not available, the anchor 1 may be manually inserted into the gripping portion 101 of the anchor and gripped.

Furthermore, the above-described anchor driving work is not limited to manual work, but is also applied when the striking device 10 to which the anchor driving rod 100 is connected is attached to a robot.

Note that the present invention is not limited to the above-described embodiments, and includes various modifications. For example, the embodiments described above are described in detail to explain the present invention in an easy-to-understand manner, and the present invention is not necessarily limited to having all the configurations described. Furthermore, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. Further, it is possible to add, delete, or replace a part of the configuration of each embodiment with other configurations.

In addition, the citation of other claims in a claim in a dependent form is a single-claim citation in order to make the statement of a claim in a dependent form easy to understand, but the present invention is applicable to multiple claims in a claim in a dependent form. This includes forms that cite (multiple cited terms) and forms that cite at least one multiple cited term.

DESCRIPTION OF SYMBOLS 1...Anchor, 2...Male thread part, 3...Nut, 4...3-sided wedge, 10...Blowing device, 20...Anchor base, 30...Wall surface, 31...Prepared hole, 100...Anchor driving rod, 101...Gripping part , 102... Connection shaft, 103... Hollow part, 104... Ball plunger, 105a, 105b... Pin plunger.

Claims (2)

In an anchor driving rod that is connected to a striking device and drives an anchor with a nut attached into a hole in a wall,
The anchor driving rod includes a grip portion that grips the anchor, and a connection portion that connects to the striking device,
The gripping portion includes a nut rotation prevention mechanism that prevents rotation of the nut while gripping the anchor,
A pin plunger is provided as the nut rotation prevention mechanism,
The pin plunger is provided such that when the gripping portion grips the anchor, the pin protrudes from the side of the gripping portion facing the nut, and the nut approaches the side of the gripping portion facing the nut. According to the above, the pin is provided so as to sink into the inside of the pin plunger body,
A portion of the outer periphery of the pin of the pin plunger that is closest to the longitudinal axis of the gripping portion is outside the inscribed circle of the nut when the gripping portion grips the anchor, and is located outside the circumscribed circle of the nut. It is located inside the
comprising two pin plungers,
In each of the two pin plungers, a portion of the outer periphery of the pin closest to the longitudinal axis of the gripping portion is outside the inscribed circle of the nut when the gripping portion grips the anchor, and located inside the circumscribed circle of the nut,
The anchor driving rod is characterized in that the two pin plungers are arranged at positions where the two pin plungers are not simultaneously pushed in by the nut when the grip portion grips the anchor. The anchor driving rod according to claim 1 ,
The gripping portion has a hollow portion larger in diameter than the male threaded portion of the anchor formed at its longitudinal center, ball plungers are provided at equal intervals with respect to the cross section of the anchor, and the gripping portion An anchor driving rod characterized in that when the anchor is gripped, the male threaded portion of the anchor is supported at three points by the ball plunger.

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