JP2016156204A - Fastening structure imparting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a male screw to be imparted, without processing an irregular-shaped bar.SOLUTION: A fastening structure imparting device 31 includes two or more divided cylindrical bodies 32 of a semi-cylindrical shape surrounding an outer periphery of an irregular-shaped bar 21 to which a fastening structure is to be imparted. An inner peripheral surface 32a of the divided cylindrical body 32 is formed to have a larger diameter than a part of the irregular-shaped bar 21 with a longitudinal rib 22a and a transverse rib 22b. An engaging projection 36 is formed on the inner peripheral surface 32a of each of the divided cylindrical bodies 32, the engaging projection being narrower in width than an interval between the transverse ribs 22b and projecting inward. A series of male screws 36 is formed on an outer peripheral surface 32b of all the divided cylindrical bodies 32. The fastening structure imparting device also includes a cylindrical rotary cylinder 33 having a female screw 39 formed on an inner peripheral surface, to be screwed with the male screw 36. The divided cylindrical body 32 is positioned and fixed on the irregular-shaped bar 21, by rotating the rotary cylinder 33 on the divided cylindrical body 32 for relatively shifting the divided cylindrical body 32 in a lengthwise direction of the irregular-shaped bar 21, and pressing the engaging projection 36 against the transverse rib 22b of the irregular-shaped bar 21.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a fastening structure imparting device that enables fastening using a screw to a rod-like body such as a deformed steel bar (deformed bar).

  Deformed steel bars are used for civil engineering anchors. For example, in order to fix a tunnel support or the like, it is necessary to have a deformed steel bar inserted and held in a rock drill, and a lock bolt having an external thread that is an end of the deformed steel bar and goes out of the drill.

  For example, as disclosed in Patent Document 1 below, this lock bolt is formed by connecting and integrating a bolt with one end surface of a deformed steel bar by friction welding. This is because, when the end portion of the deformed steel bar is cut to form the male screw portion, a processing apparatus becomes large and the processing accuracy is not easily improved.

  In addition to the lock bolt, as disclosed in Patent Document 2 below, friction welding is also used for attaching the fixing plate. That is, the screw body is friction-welded to the end surface of the deformed steel bar, and the fixing plate is screwed to the screw body.

  However, although friction welding is a method that can be joined by a relatively simple work, there is no difference in that it involves machining. That is, a friction welding machine is required and it takes time and effort for connection. In addition, it is necessary to perform processing with sufficient consideration so as not to cause poor pressure contact.

  As disclosed in Patent Document 3 below, a screw joint reinforcing nut for fixing a member to the thread joint is also proposed. The nut is composed of a pair of semi-cylindrical screw members having screw portions that are externally screwed into screw joints of the screw joint reinforcing bar, and a cylindrical body that is screwed and fitted to the outer periphery of the pair of screw members. Yes.

  The screw member has a shape having a flange at one end, and can be externally fitted to a screw node at an appropriate portion of the screw node reinforcing bar. In use, a set of screw members are externally fitted to a screw joint reinforcing bar, and a cylindrical body having a diameter larger than that of the screw joint reinforcing bar is screwed and fitted to the outer periphery of the screw member. Rotate and integrate until it touches the flange. In other words, the nut for fixing the screw joint rebar has a configuration in which the nut is divided into three parts. When the screw portion of the screw member rotates on the thread reinforcing bar, the nut moves on the thread reinforcing bar.

  However, such a configuration cannot be used for a deformed steel bar without a threaded joint. There are long vertical ribs along the longitudinal direction and transverse ribs in the direction perpendicular to the outer circumferential surface of the deformed steel bar. The size and arrangement of these ribs vary from product to product. The member could not be fixed.

  Patent Document 4 below discloses a structure for fixing a fixing body to a deformed reinforcing bar. This fixing body is composed of an outer cylinder and a pair of fixing pieces fitted inside. A plurality of concave grooves are formed at regular intervals on the inner peripheral surface of the fixing piece, and an inclined surface is formed on the outer peripheral surface of the fixing piece and the inner peripheral surface of the outer cylinder. That is, the fixing piece acts as a wedge to fix the outer cylinder to the outer periphery of the deformed reinforcing bar. However, with this configuration, it is not only possible to absorb the variation in the size and interval of the ribs and firmly fix the ribs, but it is also impossible to perform fastening using screws on the deformed reinforcing bars.

Utility Model Registration No. 2517918 Japanese Patent No. 3512360 Japanese Utility Model Publication No.59-84113 JP 2002-265617 A

  In view of this, the main object of the present invention is to provide a fastening structure that can be fixed using a nut without processing a rod-shaped body such as a deformed steel bar.

  Means therefor include a plurality of cylindrical divided bodies that surround the outer peripheral surface of the rod-shaped body to which the fastening structure is to be applied in a shape in which the cylinder is divided in the circumferential direction, and the rod-shaped body extends vertically along the longitudinal direction on the outer peripheral surface. A rib and a transverse rib extending in a direction perpendicular to the longitudinal direction and disposed with a gap in the longitudinal direction, and an inner peripheral surface of the cylindrical divided body includes the longitudinal rib of the rod-shaped body and the rib A locking ridge is formed on the inner peripheral surface that is narrower than the interval between the lateral ribs and protrudes inward, and is formed on the inner peripheral surface. A series of external threads are formed on the outer peripheral surface, and an abutment that becomes immovable in the longitudinal direction of the rod-shaped body by contacting an internal thread that engages with the external thread and a cylindrical tubular portion formed on the inner peripheral surface It is the fastening structure provision apparatus provided with the rotating cylinder which has a surface.

  With regard to the locking ridge, “one” means an elongated shape like a horizontal rib of a rod-like body and having a series and integrity in terms of form and function. It also means that it has a divided shape or a parallel shape in the short direction.

  In this configuration, the plurality of cylindrical divided bodies that surround the outer periphery of the rod-shaped body are held on the rod-shaped body by the rotating cylinder. In this holding state, one locking protrusion protruding from the inner peripheral surface of the cylindrical divided body is positioned in the gap between the lateral ribs of the rod-shaped body, and even if it is attempted to remove the cylindrical divided body from the rod-shaped body, The locking ridges can come into contact with the vertical ribs and are prevented from rotating on the rod-shaped body. When the internal thread of the rotating cylinder rotates on the external thread of the cylindrical divided body, the cylindrical divided body relatively moves in the longitudinal direction of the rod-shaped body in the direction opposite to the direction in which the rotating cylindrical body advances. After the abutment surface of the rotating cylinder is in contact with the rod-like body indirectly or directly to be positioned and fixed, the further rotation of the rotating cylinder causes the locking protrusions of the cylindrical divided body to be lateral. The position of the cylindrical divided body on the rod-shaped body is fixed by being engaged with the rib, and a fastened state is obtained. “When the abutment surface of the rotating cylinder is in contact with the rod-like body indirectly or directly and positioned and does not move”, the abutment surface of the rotating cylinder has a relationship with the rod-like body. When it becomes impossible to rotate because it hits the flange or the end of the rod-like body formed on the fastening material or the rod-like body, or when the rotating cylinder acts on the rod-like body by the action of another cylindrical divided body There is a fixed time.

  According to the present invention, it is possible to provide a fastening structure that can be fastened using screws only by mechanically attaching to a rod-like body that is a fastening structure provision target. Since it is not necessary to process a rod-shaped body such as a deformed reinforcing bar or a deformed steel bar, it is possible to prevent inconveniences such as processing defects without taking time and effort. In addition, since one locking protrusion is formed on each of the plurality of cylindrical divided bodies, and each of these can be locked to the lateral rib, a strong fixed state having a large number of locking portions can be obtained.

The perspective view of the anchor frame which applied the fastening structure provision apparatus. The enlarged front view of the principal part of FIG. The perspective view of a fastening structure provision apparatus. Sectional drawing of the use condition of a fastening structure provision apparatus. The perspective view of a deformed steel bar and a cylindrical division body. Explanatory drawing which shows the relationship of the magnitude | size of a deformed steel bar and a cylindrical division body. The perspective view of the state which assembled the cylindrical division body. The front view which shows the connection state of a cylindrical division body. Sectional drawing which shows an action state. AA sectional drawing of FIG. Sectional drawing which shows the other example of the use condition of a fastening structure provision apparatus. Sectional drawing of the fastening structure provision apparatus which concerns on another example. Sectional drawing of the fastening structure provision apparatus which concerns on another example. The perspective view of the cylindrical division body of FIG. The perspective view of the state which assembled the cylindrical division body of FIG. Sectional drawing of the fastening structure provision apparatus which concerns on another example. Sectional drawing which shows the other example of the use condition of a fastening structure provision apparatus. Sectional drawing which shows the other example of the use condition of a fastening structure provision apparatus. Sectional drawing which shows the other example of the use condition of a fastening structure provision apparatus. The front view which shows the other example of the use condition of a fastening structure provision apparatus. Sectional drawing which shows the other example of the use condition of a fastening structure provision apparatus. Sectional drawing which shows the other example of a fastening structure provision apparatus. Sectional drawing which shows the other example of a fastening structure provision apparatus. The top view which shows the other example of an engagement slide structure. The top view which shows the other example of an engagement slide structure. The top view which shows the other example of an engagement slide structure. The top view which shows the other example of an engagement slide structure.

An embodiment for carrying out the present invention will be described below with reference to the drawings.
FIG. 1 is a perspective view of an anchor frame 11 used for various foundations for structures such as buildings and signboards. The anchor frame 11 shown in this figure includes a plurality of anchor bolts 12, a plate-like lower plate 13 that supports the lower ends of the anchor bolts 12, and a plate that is fixed to the upper ends of the plurality of anchor bolts 12. And a fixing leg 15 and fixing means 16 fixed on the installation surface in a state where the lower plate material 13 is floated from the installation surface.

  The anchor bolt 12 uses a deformed steel bar 21 having a streak-like rib on the surface in order to improve adhesion with concrete. The deformed steel bar 21 has ribs 22 protruding in the outer peripheral direction on the outer peripheral surface. As is known, the ribs 22 are a plurality of vertical ribs 22a and a plurality of horizontal ribs 22b. Specifically, the longitudinal ribs 22a extending longitudinally (longitudinal direction) at two opposite points on the straight line passing through the center of the circumference, and the lateral extending between the longitudinal ribs 22a in the direction orthogonal to the longitudinal direction (longitudinal direction). Ribs 22b are provided. The lateral ribs 22b are disposed with a gap in the longitudinal direction of the deformed steel bar 21, and are formed in steps on both sides of the longitudinal ribs 22a.

  The upper plate member 14 and the lower plate member 13 are fixed to the upper and lower ends of the anchor bolt 12 made of the deformed steel bar 21, respectively. A device that enables this fixing is the fastening structure imparting device 31. That is, as shown in FIG. 2 which is a partially enlarged side view of FIG. 1, the fastening structure imparting device 31 performs cutting or friction welding on the deformed steel bar 21 as a rod-shaped body to which the fastening structure is imparted. Fastening using screws is possible without forming a male threaded part by a simple process.

  As shown in FIG. 3, the fastening structure imparting device 31 includes a plurality of cylindrical divided bodies 32 that surround the outer peripheral surface of the deformed steel bar 21 in a shape in which the cylinder is divided in the circumferential direction, and a cylindrical split that surrounds the deformed steel bar 21. A rotating cylinder 33 is provided that linearly moves the cylindrical divided body 32 along the longitudinal direction of the deformed bar 21 by holding the body 32 on the deformed bar 21 and rotating it.

  As shown in FIG. 3, the cylindrical divided body 32 has a shape in which a cylinder having an arc-shaped inner peripheral surface 32 a and an outer peripheral surface 32 b is vertically divided into two. In other words, the cylindrical divided body 32 has a semi-cylindrical shape, and its cross-sectional shape is a semicircular arc shape. When both side edges of the two cylindrical divided bodies 32 are combined, it becomes a cylindrical shape. Two or more such cylinder division bodies 32 are provided with a deformed steel bar 21 interposed therebetween. In other words, two cylindrical divided bodies 32 forming a pair, or three or more cylindrical divided bodies 32 obtained by adding one or more cylindrical divided bodies 32 arranged in the longitudinal direction of the deformed steel bar 21 to the two cylindrical divided bodies 32 are provided. Yes. A state in which the plurality of cylindrical divided bodies 32 are gathered is hereinafter referred to as a “cylindrical body 34”. In this cylindrical body 34, there may be a gap between the pair of cylindrical divided bodies 32. A space is provided between the cylindrical divided bodies 32 arranged in the longitudinal direction of the deformed steel bar 21. The end faces located at the outer sides in the longitudinal direction of the deformed bar 21 in the four cylindrical divided bodies 32 shown in FIG. 3, that is, the upper and lower ends are horizontal.

  The division position of the cylindrical divided body 32 is set as appropriate. Here, as shown in FIGS. 4 and 5, the division position is set at a position corresponding to the vertical rib 22 a of the deformed steel bar 21. That is, the cylindrical divided body 32 has a shape divided at a position corresponding to the vertical rib 22a, and is an intermediate portion in the width direction between another cylindrical divided body 32 and the vertical rib 22a disposed on both side edges with the deformed bar 21 interposed therebetween. Are opposed to each other at a position corresponding to.

  An engagement slide structure 35 is formed on a cylindrical divided body 32 disposed with the deformed bar 21 sandwiched therebetween so as to be movable relative to each other in the longitudinal direction of the deformed bar 21. The engagement slide structure 35 includes a ridge 35a and a groove 35b that engage with each other long along the longitudinal direction of the deformed steel bar 21.

  On the opposing surface 32c on both side edges of one cylindrical divided body 32 of the cylindrical divided bodies 32 arranged with the deformed steel bar 21 interposed therebetween, a ridge 35a extending in a L-shaped cross section forward from the outer peripheral surface 32a is formed. On the outer peripheral surface 32a side at a position retracted from the opposing surface 32c on both side edges of the other cylindrical divided body 32, a concave line 35b with which the convex line 35a engages is formed. The ridges 35a and the ridges 35b have such a size that an appropriate gap for absorbing the difference in dimensions of the deformed steel bar 21 is formed between them.

  As shown in FIGS. 4 and 6, the inner peripheral surface 32 a of the cylindrical divided body 32 is formed to have a slightly larger diameter than the portion having the vertical rib 22 a and the horizontal rib 22 b of the deformed steel bar 21. That is, the diameter D1 of the inner peripheral surface 32a is larger than the diameter D2 of the portion having the ribs 22. The inner peripheral surface 32a is formed with one locking protrusion 36 that protrudes inward with a width (W2) narrower than the interval W1 between the lateral ribs 22b. The locking protrusion 36 has a shape that is long in the circumferential direction, and is constituted by one.

  The locking protrusion 36 does not have a shape that fits between the lateral ribs 22b, but is formed to have a required rigidity while being considerably narrower than the interval W1 between the lateral ribs 22b. The magnitude | size of the latching protrusion 36 is suitably set according to the prescription | regulation standard dimension of the deformed steel bar 21, such as the average space | interval of the horizontal rib 22b, and the height of the horizontal rib 22b. About the height of the latching protrusion 36, it is good to be comparable as the height of the vertical rib 22a and the horizontal rib 22b. Since the locking protrusion 36 is set in this way, the locking protrusion 36 is formed of the deformed steel bar 21 when the inner peripheral surface 32a of the cylindrical divided body 32 overlaps the surfaces of the vertical rib 22a and the horizontal rib 22b. It enters between the lateral ribs 22b and allows the cylindrical divided body 32 to move within a certain range in the longitudinal direction of the deformed steel bar 21, but prevents the deformed steel bar 21 from coming off. That is, even when the cylindrical body 34 is moved on the deformed steel bar 21 in the longitudinal direction and is pulled out, the locking protrusion 36 is caught by the lateral rib 22b and cannot be pulled out.

  The length of the locking protrusion 36 is formed so as to fit between the vertical ribs 22a, and at least one end in the longitudinal direction of the locking protrusion 36 is a contact portion 36a that contacts the side surface of the vertical rib 22a. In this example, the cylindrical divided body 32 has a shape divided into two at positions corresponding to the vertical ribs 22 a, and the locking protrusion 36 is formed of a single elongated shape, so that the abutting portion 36 a is formed of the locking protrusion 36. It will be formed at both ends. As shown in FIGS. 3, 5, and 6, the contact portion 36 a is formed obliquely in accordance with the inclination of the side surface of the vertical rib 22 a. The position and size of the abutting portion 36a are set so as to absorb the variation in dimensions of the deformed steel bar 21. Since there is the locking protrusion 36 having such an abutting portion 36a, when the cylindrical divided body 32 is held on the outer periphery of the deformed steel bar 21, the cylindrical divided body 32 becomes non-rotatable on the deformed steel bar 21, and is deformed. It can move only in the longitudinal direction of the steel bar 21.

  As described above, one locking protrusion 36 is formed on one cylindrical divided body 32. The height of the cylindrical divided body 32 is set according to the position where it is disposed so that this is possible. That is, there is no problem even if the inner peripheral surface 32a of the outer end portion in the longitudinal direction of the deformed steel bar 21 in the cylindrical divided body 32 is longer than the gap (interval W1) between the lateral ribs 22b. When a plurality of deformed steel bars 21 are provided in the longitudinal direction and can be locked to the lateral ribs 22b adjacent in the longitudinal direction, the inner peripheral surface of the cylindrical divided body 32 on the inner side in the longitudinal direction of the deformed steel bar 21. The height of 32a must be smaller than the gap (interval W1) between the lateral ribs 22b.

  In order to obtain a cylindrical body 34 with good unity by such a plurality of cylindrical divided bodies 32, when a plurality of cylindrical divided bodies 32 are provided in the longitudinal direction of the deformed steel bar 21, as shown in FIG. An inclined surface 37 inclined in the same direction is formed on the entire opposing surface of the cylindrical divided body 32 facing each other in the longitudinal direction. The inclined surface 37 in this example is an inclined surface 37 that is inclined so as to draw a spiral extending in the same direction. The inclination angle of the inclined surface 37 is appropriately set according to the interval between the lateral ribs 22b.

  Further, the cylindrical divided body 32 is formed so as to be able to connect all the three or more cylindrical divided bodies 32 having the engaging slide structure 35 and disposed with the deformed steel bar 21 interposed therebetween as described above. FIG. 7 is a perspective view of a cylindrical body 34 composed of four cylindrical divided bodies 32. As shown in FIG. 7, at least one side of the opposite ends of the cylindrical divided body 32 is engaged with an sliding structure. 35 is formed in a shape to engage with each other.

  In the example of FIG. 7, among the four cylindrical divided bodies 32 arranged in two upper and lower stages in the longitudinal direction of the deformed steel bar 21, the highest portion of the upper cylindrical divided bodies 32 is located at the upper stage. Opposite end portions of a cylindrical divided body (upper left side in FIG. 7) 32 and a cylindrical divided body 32 (lower right side in FIG. 7) having the highest portion among the lower cylindrical divided bodies 32 located in the lower stage, That is, the lower corner portion 37a of the upper cylindrical divided body 32 and the upper corner portion 37b of the lower cylindrical divided body 32 are engaged with each other. FIG. 8 is a front view showing an engaged state between the opposed end portions. Thereby, all the cylindrical division bodies 32 which comprise the cylindrical body 34 are connected in the state which can be relatively moved in the longitudinal direction of the deformed steel bar 21.

In other words, since the upper and lower surfaces of the cylindrical body 34 composed of the four cylindrical divided bodies 32 are horizontal as described above, the lengths of both side edges of all the cylindrical divided bodies 32 are shorter than the other. Or it becomes long (refer FIG.3, FIG.5, FIG.6, FIG.7).

A series of external threads 38 are formed on the entire outer peripheral surface 32 b of the cylindrical divided body 32. That is, when the cylindrical divided body 32 becomes the cylindrical body 34, the external thread 38 is connected.

  As shown in FIG. 3, the rotary cylinder 33 has a nut-like shape as a whole, and has a cylindrical portion 33a in which an internal thread 39 that engages with an external thread 38 of the cylindrical divided body 32 is formed on the inner peripheral surface. That is, the whole is the cylindrical portion 33a. The outer peripheral surface of this cylindrical part 33 is formed in a hexagonal shape.

  The rotating cylinder 33 has an abutment surface that does not move in the direction in the deformed steel bar 21. In the rotating cylinder 33 of this example, one end thereof, that is, the end surface in the direction of screwing when rotated and screwed is the contact surface 33c.

  The fastening structure imparting device 31 including the cylindrical divided body 32 and the rotating cylindrical body 33 is used for assembling the anchor frame 11 as follows.

  As shown in FIG. 2, an example in which the lower plate member 13 is fixed to the lower end portion of the deformed steel bar 21 will be described. First, one fastening structure is provided at a position above the position where the lower plate material 13 is attached in the deformed steel bar 21. The rotating cylinder 33 of the device 31 is held.

  Next, as shown in FIG. 9 (see (a) and (b)), the lower plate member 13 is inserted into the deformed steel bar 21, and the outer periphery of the deformed steel bar 21 at a predetermined position above the lower plate material 13 is shown. A cylindrical divided body 32 of one fastening structure imparting device 31 is arranged to be a cylindrical body 34. At this time, the cylindrical divided bodies 32 are connected to each other by the engagement slide structure 35 and the position of each cylindrical divided body 32 in the longitudinal direction of the deformed steel bar 21 is adjusted to The distance between the horizontal ribs 22b for locking them is made equal. The cylindrical body 34 obtained in this manner is screwed with the previously held rotary cylinder 33. When the internal thread 39 of the rotating cylinder is screwed into the external thread 38 of the cylindrical body 34, the rotating cylindrical body 33 holds the cylindrical divided body 32 (cylindrical body 34) on the deformed steel bar 21 in cooperation with the locking protrusion 36. To do.

  Subsequently, on the outer periphery of the deformed steel bar 21 at a predetermined position below the lower plate member 13, the cylindrical divided body 32 of another fastening structure imparting device 31 is arranged as described above to form a cylindrical body 34. The rotating cylinder 33 of another fastening structure applying device 31 is screwed to the body 34. By this screwing, the cylindrical divided body 32 is held by the deformed steel bar 21 even below the lower plate member 13 as in the case of the upper plate.

  In this state, when the rotating cylinders 33 of the two fastening structure imparting devices 31 are respectively rotated with respect to the cylindrical divided body 32 (cylindrical body 34) above and below the lower plate member 13, the locking protrusions of the cylindrical divided body 32 are obtained. Since the abutting portion 36a of 36 abuts the side surface of the vertical rib 22a, the cylindrical divided body 32 does not rotate, and moves linearly in the longitudinal direction of the deformed steel bar 21 by the rotation of the rotating cylindrical body 33. As the rotating cylinder 33 continues to rotate, the abutting surface 33c of the rotating cylinder 33 comes into contact with some part and becomes immobile in the longitudinal direction of the deformed steel bar 21. In this example, as shown in FIG. 9 (see (c)), the abutting surface 33c of each rotating cylinder 33 directly abuts on the lower plate member 13, so that the rotating cylinder 33 is divided into a cylindrical divided body 32 (cylindrical body 34). ) In the longitudinal direction of the deformed steel bar 21 is moved relative to the direction opposite to the direction having the contact surface 33c, and the locking protrusion 36 of the cylindrical divided body 32 is locked to the lateral rib 22b. When the upper and lower fastening structure imparting devices 31 above and below the lower plate member 13 are viewed as a whole, the cylindrical divided bodies 34 in the respective rotating cylinders 33 move in directions away from each other.

  By this movement, as shown in FIG. 4, the locking protrusions 36 of the many cylindrical divided bodies 32 constituting the cylindrical body 34 are pressed against the lateral ribs 22 b of the deformed steel bar 21 from the lower plate member 13 side, and The cylindrical body 34 is pulled with the deformed steel bar 21 upward, and the lower cylindrical body 34 is pulled with the deformed steel bar 21 downward. As a result, the position of the cylindrical body 34 on the deformed bar 21 can be fixed in a state where tension is applied to the deformed bar 21 by the cylindrical body 34 and the rotating cylinder 33, and a fastening state can be obtained. In this example, since the lower plate member 13 is sandwiched and fixed, the position fixing of the cylindrical body 34 is fastening for fixing the lower plate member 13.

  In FIG. 9, only the fastening structure applying device 31 above the lower plate member 13 is illustrated for convenience. The same applies to FIG. 11, FIG. 12, FIG. 13, and FIG.

  10 is a cross-sectional view taken along the line AA in FIG. As shown in this figure, the cylindrical divided body 32 that is screwed with the rotating cylinder 33 and is held by the rotating cylinder 33 has a locking rib 36 that indicates the screwing direction of the rotating cylinder 33 in the lateral rib 22b. Lock on the surface. Further, the gap 35 c of the engagement slide structure 35 absorbs the dimensional error of the deformed reinforcing bar 21. Even if there is such a gap 35c, the locking protrusion 36 is pressed against and fixed to the lateral rib 22b, so that a firm fixed state is obtained.

  The fixed height of the lower plate 13 can be adjusted by the amount of rotation of the upper and lower rotary cylinders 33 of the lower plate 13.

  Although not shown, a washer may be provided between the rotating cylinder 33 and the lower plate member 13 and the upper plate member 14.

  If necessary depending on conditions such as the interval between the lateral ribs 22b of the deformed steel bar 21, the adjustment washer 41 may be sandwiched between the rotating cylinder 33 and the lower plate 13 as shown in FIG. The adjustment washer 41 is formed in an annular shape like a general washer, and a plurality of types of thicknesses are prepared. The material of the adjustment washer 41 may be metal or rubber. The adjustment washer 41 has an annular shape, and can be inserted during fixing work as long as it has a notch 41a as shown by a virtual line.

  In the anchor frame 11 configured in this way, the lower plate member 13 and the upper plate member 14 can be coupled without processing the deformed steel bar 21 such as cutting, so that the standard can be maintained, and performance and stability can be maintained. Contribute to the improvement of

  Moreover, since the fastening structure imparting device 31 is fastened with screws, the vertical position of the lower plate member 13 and the upper plate member 14 can be finely adjusted.

  The fastening structure imparting device 31 is attached by allocating a cylindrical divided body 32 to the outer periphery of the deformed steel bar 21 and replacing the cylindrical rotating cylinder 33 having a hole larger than the thickness of the deformed steel bar 21 with the cylindrical divided body 32. Since it only needs to be screwed together, it can be easily performed on site. A device for attachment is not required, and the attachment work can be easily performed in synchronization with the fastening work. The fact that the cylindrical divided body 32 has a two-divided shape also contributes to the ease of attachment work.

  The cylindrical divided body 32 has an engagement slide structure 35, and has an inclined surface 37 on the opposing surface of the cylindrical divided body 32 opposed to each other in the longitudinal direction of the deformed steel bar 21, so that all the cylindrical divided bodies 32 are connected in series. It is a shape that can be. Also from this point, the attaching work of the fastening structure applying device 31 can be easily performed.

  Moreover, since the cylindrical divided body 32 has a shape obtained by dividing the cylinder at positions corresponding to the vertical ribs 22a of the deformed steel bar 21, the cylindrical divided body 32 has a simple configuration and the locking protrusions 36 of the cylindrical divided body 32 are arranged between the vertical ribs 22a. Since it is attached so that it fits in, it fits well, and handling is good from this point. As a result, the workability of attaching the fastening structure imparting device 31 is very good.

  Moreover, since the latching protrusion 36 of the cylindrical division body 32 engages with the horizontal rib 22b of the deformed steel bar 21, a strong latching state can be easily obtained. In addition, one cylindrical protrusion 32 is provided with one locking protrusion 36, and many of these can be locked to the lateral rib 22b. As described above, when the four cylindrical divided bodies 32 are provided, they can be locked at a maximum of four locations. In this way, many locking points are obtained. In addition, the locking protrusion 36 has a single long shape similar to the lateral rib 22b, and therefore has high rigidity. As a result, stronger fixation is possible.

  As described above, when a plurality of stages of the cylindrical divided bodies 32 are provided in the longitudinal direction of the deformed steel bar 21, the engaging protrusions 36 of some of the plurality of cylindrical divided bodies 32 arranged in the longitudinal direction of the deformed steel bar 21 are engaged. Even if the stop is weak, one of the other locking protrusions 36 is surely locked firmly, so that a firmly fixed state can be obtained with certainty.

  Moreover, the locking protrusions 36 of the cylindrical divided body 32 are formed smaller than between the lateral ribs 22b of the deformed steel bar 21, and the cylindrical divided body 36 is movable in the direction along the longitudinal direction of the deformed steel bar 21, so that the deformed shape is obtained. Even if there is a variation in the interval between the horizontal ribs 22b of the steel bar 21, it has an effect of absorbing it. For this reason, the fastening structure imparting device 31 can be applied to the deformed steel bars 21 of different manufacturers, and the usable range is wide.

Other examples will be described below. In this description, parts that are the same as or equivalent to those in the above-described configuration are given the same reference numerals, and detailed descriptions thereof are omitted.
FIG. 12 is a cross-sectional view showing an example in which the cylindrical divided body 32 of the fastening structure imparting device 31 is composed of two pairs that sandwich the deformed steel bar 21. In other words, the cylindrical divided body 32 is configured to have one stage in the longitudinal direction of the deformed steel bar 21. The upper and lower surfaces of the cylindrical divided body 32, that is, portions corresponding to both sides in the longitudinal direction of the deformed steel bar 21 are horizontal.

  Such a fastening structure imparting device 31 is also used in the same manner as described above, and has the same effect.

  FIG. 13 is a cross-sectional view of a fastening structure imparting device 31 in which the cylindrical divided body 32 is provided in three stages in the longitudinal direction of the deformed steel bar 21. That is, six semi-cylindrical cylindrical divided bodies 32 are provided. FIG. 14 is a perspective view of six cylindrical divided bodies 32. In this case, the cylindrical divided bodies 32 are arranged with a gap in three stages, but the upper and lower cylindrical divided bodies 32 have the same shape as described above. The middle-stage cylindrical divided body 32 has the same length of both side edges having the engagement slide structure 35, but has a different relative height and has a twisted shape.

  The difference from the case of the four cylindrical divided bodies 32 is that the upper and lower surfaces of the cylindrical body 34 are horizontal as shown in FIG. 15, and therefore the lengths of both side edges of all the upper and lower cylindrical divided bodies 32 are. One is shorter or longer than the other, whereas the lengths of both side edges of the middle cylindrical divided body 32 are the same. In FIG. 15, the illustration of the male screw 38 is omitted from the viewpoint of clarity.

  Even in such six cylindrical divided bodies 32, as shown in FIG. 15, all the cylindrical divided bodies 32 constituting the cylindrical body 34 are connected in a state of being relatively movable in the longitudinal direction of the deformed steel bar 21 as described above. Will be.

  Such a fastening structure imparting device 31 is also used in the same manner as described above, and has the same effect.

  FIG. 16 is a cross-sectional view illustrating an example in which two rotating cylinders 33 of the fastening structure imparting device 31 are provided. In this way, if two rotating cylinders 33 are stacked and the lower rotating cylinder 33 functions as a lock nut, loosening can be prevented. In this case, one end of each of the two rotating cylinders 33 is a contact surface 33c.

  FIG. 17 is a cross-sectional view showing the fastening structure applying device 31 used for fastening the fixing plate 17.

  The fastening structure imparting device 31 can be used in various ways other than the anchor frame 11 described above. The fixing plate 17 is an example. Other than the fixing plate 17 may be used. The fixing plate 17 is used in place of the reinforcing bar fixing method using a deformed steel bar with bent end portions, and is frequently used because there is no possibility of impeding the filling property of concrete.

  The fixing plate 17 is attached to a middle position in the longitudinal direction of the deformed steel bar 21 and has an annular plate shape having an appropriate thickness. The central through-hole 17 a has a size that can be fitted into the deformed steel bar 21, and the size of the outer peripheral surface 17 b is set to be larger than the size of the rotating cylinder 33.

  The cylindrical divided body 32 and the rotating cylinder 33 have the same configuration as described above, and are attached to the deformed steel bar 21 using the two fastening structure imparting devices 31 in the same manner as described above.

  FIG. 18 is a cross-sectional view showing a structure for holding the fixing plate 17 between the fastening structure applying device 31 and another member, instead of sandwiching the fixing plate 17 between the fastening structure applying devices 31.

  Another member is a pair of cylindrical divided members 45 having a shape divided into two at a portion corresponding to the vertical rib 22a of the deformed steel bar 21, like the cylindrical divided body 32 of the fastening structure imparting device 31. One end of the cylindrical dividing member 45 has a flange portion 46 that projects in the outer peripheral direction. The size and shape of the flange 46 are appropriately set. Further, a plurality of locking ridges 47 having the same configuration as the above-described locking ridge 36 are provided on the inner peripheral surface of the cylindrical dividing member 45 at intervals along the longitudinal direction of the deformed steel bar 21. The interval between the locking ridges 47 is appropriately set so that at least one locking ridge 47 is locked to the lateral rib 22b based on the interval between the lateral ribs 22b of the deformed steel bar 21. On the outer peripheral surface excluding the flange portion 46 of the cylindrical dividing member 45, a male screw 48 that is screwed with the female screw 39 of the rotating cylinder 33 of the fastening structure imparting device 31 is formed.

  In order to fix the fixing plate 17 using such a cylindrical dividing member 45, first, the cylindrical dividing member 45 is brought into contact with the deformed steel bar 21 at a predetermined position on the deformed steel bar 21, and the through hole of the fixing plate 17 is used. 17 a is inserted into the cylindrical dividing member 45, and the fixing plate 17 is held by the flange 46. Subsequently, the cylindrical divided body 32 of the fastening structure imparting device 31 is applied to a predetermined position on the outer peripheral surface of the deformed steel bar 21 and is held on the deformed steel bar 21 by the rotating cylinder 33. Then, the rotating cylinder 33 is rotated so that the contact surface 33 c side of the rotating cylinder 33 is screwed into the male screw 48 of the cylindrical dividing member 45. As a result, the fixing plate 17 is sandwiched between the rotary cylinder 33 and the flange 46 as described above.

  If such fixing is performed, one side of the fixing plate 17 in the deformed steel bar 21 can be kept thin.

  FIG. 19 is a cross-sectional view of a fastening structure imparting device 31 according to another example showing a fixing state of the fixing plate 17. As shown in this figure, an internal thread 17 c that engages with an external thread 48 of the cylindrical dividing member 45 may be formed in the through hole 17 a of the fixing plate 17.

  The outer peripheral surface 17b of the fixing plate 17 may be circular, but it may be formed in a hexagonal shape so that a rotational force can be easily input. Since the fixing member 17 can hold the cylindrical dividing member 45 having the flange 46 on the deformed steel bar 21, the rotating operation of the rotating cylinder 33 is facilitated.

  20 is a front view showing an example in which the cylindrical dividing member member 45 with the flange 46 shown in FIGS. 18 and 19 is used for assembling the anchor frame 11 described above. In this way, the fixing plate 17 can be used other than fixing.

  FIG. 21 is a cross-sectional view of a fastening structure applying device 31 showing an example using a cylindrical dividing member 45 in which the fixing plate 17 is integrated. This fastening structure imparting device 31 has a configuration in which a portion corresponding to the flange portion 46 of the cylindrical dividing member 45 with the flange portion 46 shown in FIGS.

  Since the fixing plate portion 49 is integrally provided on the cylindrical dividing member 45 as described above, the number of parts can be reduced and the fixing operation can be simplified.

  FIG. 22 shows an example in which a fixing plate is attached to the end of the deformed steel bar 21, and the rotating cylinder 33 has a hook-shaped fixing plate action portion 33 d that functions as a fixing plate.

  The rotating cylinder 33 is formed with one end of a cylindrical cylindrical portion 33a having an internal thread 39 formed on the inner peripheral surface, and a plate-shaped fixing plate action portion 33d closing the cylindrical portion 33a. The cylindrical portion 33a may be circular in cross section, hexagonal in cross section, or other shapes. The shape of the outer peripheral surface of the fixing plate action portion 33d protruding from the outer periphery of the cylindrical portion 33a may be circular, hexagonal, or other shapes. However, since it is necessary to rotate the rotation cylinder 33 or to prevent the rotation, it is preferable that either the cylindrical portion 33a or the fixing plate action portion 33d has a shape other than a circular cross section.

  The contact surface 33c of the rotating cylinder 33 having such a shape is a portion (inner bottom surface of the rotating cylinder 33) in the cylindrical portion 33a of the fixing plate action portion 33d.

  The fastening structure imparting device 31 having such a configuration attaches the cylindrical divided body 32 to the end portion of the deformed steel bar 21, and then screwes the rotating cylindrical body 33 thereon. The rotation may be performed by rotating either the deformed steel bar 21 or the rotating cylinder 33. Due to the relative rotation of the rotating cylindrical body 33, the cylindrical divided body 32 is drawn, and the locking protrusions 36 of the cylindrical divided body 32 are locked to the lateral ribs 22b of the deformed steel bar 21, so that the deformed steel bar 21 has a contact surface 33c. Attract to. By tightening the end face of the deformed steel bar 21 in contact with the contact surface 33c, a firm fixed state can be obtained.

  FIG. 23 shows an example in which the deformed steel bars 21 are joined together by the fastening structure imparting device 31. That is, the configuration of the cylindrical divided body 32 of the fastening structure imparting device 31 is the same as described above, but two sets are provided. The rotating cylinder 33 is tubular and forms a cylindrical part 33a in an appropriate range on both side parts in the longitudinal direction. That is, two cylindrical portions 33a are provided. These cylindrical portions 33a have female threads 39 on the inner peripheral surface. The cylindrical divided body 32 is held in a portion provided with the female screw 39. These female screws 39 have different directions, one being a right screw and the other being a left screw.

  A closed portion 33 e that closes the rotating cylinder is formed in a portion between the female screws 39, that is, inside the longitudinal intermediate portion of the rotating cylinder 33. The closing portion 33e is composed of a short columnar member, and is housed inside the rotating cylinder 33, and then the rotating cylinder 33 is squeezed and fixed. The narrowed portion, that is, the narrowed portion 33f is preferably formed in a hexagonal cross section, but may be circular in cross section. In the rotary cylinder 33 having such a configuration, both end surfaces of the member constituting the closing portion 33e are the contact surfaces 33c. The contact surface 33 c can be formed by holding the closing member 33 e and can be formed of the same material as the rotating cylinder 33.

  The fastening structure imparting device 31 having such a configuration attaches the cylindrical divided body 32 to the end portions of the two deformed steel bars 21 and then screwes the rotating cylindrical body 33 thereon. The rotation may be performed by rotating either the deformed steel bar 21 or the rotating cylinder 33. Due to the relative rotation of the rotating cylindrical body 33, the cylindrical divided body 32 is drawn, and the locking protrusions 36 of the cylindrical divided body 32 are locked to the lateral ribs 22b of the deformed steel bar 21, so that the deformed steel bar 21 has a contact surface 33c. Attract to. By tightening the end surfaces of the two deformed steel bars 21 in contact with the contact surface 33c, a strong coupled state of the two deformed steel bars 21 is obtained.

  FIG. 24 shows another example of the engagement slide structure 35 of the cylindrical divided body 32. This engagement slide structure 35 is wider toward the tip side of the protrusion 35a and toward the back side of the recess 35b, and has a slide inclined surface 35d on the opposing surfaces of the protrusion 35a and the recess 35b. The slide inclined surface 35d is inclined in a direction that prevents separation of the cylindrical divided body 32. FIG. 24A shows an example in which the engaging slide structures 35 on both side edges have a line-symmetric shape, and FIG. 24B shows an example in which the shape is point-symmetric.

  FIG. 25 shows another example of the engagement slide structure 35 of the cylindrical divided body 32. The engagement slide structure 35 is only one side edge of the cylindrical divided body 32 facing each other. Each of the engagement slide structures 35 has a ridge 35a having a circular cross section at the tip, and a shape having a flared groove 35b inside the ridge 35a, and one ridge 35a is the other. It is formed to be slightly rotatable within 35b.

  The other side edge which does not have the engagement slide structure 35 is the opposing surface 32 which is entirely flat.

  In the case of having the engagement slide structure 35 having such a configuration, the cylindrical divided body 32 can be easily attached to the deformed steel bar 21 because the engagement slide structure 35 is engaged and rotated in the closing direction. .

  FIG. 26 shows another example of the engagement slide structure 35 of the cylindrical divided body 32. The engagement ride structure 35 is formed on both side edges of the cylindrical divided body 32, and is configured such that one cylindrical divided body 32 can be obliquely engaged with the other cylindrical divided body 32. That is, both of the cylindrical divided bodies 32 have a ridge 35a having a circular cross section at the tip, and a shape having a flat ridge 35b inside the ridge 35a, and one of the ridges 35a of the cylindrical divided body 32. The other protrusion 35a extends from the inner peripheral surface 32a side from the outer peripheral surface 32b side, is detachable from the oblique direction, and cannot be separated even if the cylindrical divided body 32 is opened straight in the opposite direction. It is formed into a shape.

  In the case of having the engagement slide structure 35 having such a configuration, the cylindrical divided body 32 can be attached to the deformed steel bar because one cylindrical divided body 32 can be engaged with the other cylindrical divided body 32 from the side. Simple.

  FIG. 27 shows another example of the engagement slide structure 35 of the cylindrical divided body 32. The engagement ride structure 35 is formed on both side edges of the cylindrical divided body 32, and includes a protruding line 35a protruding in the contact and separation direction of the cylindrical divided body 32, and a recessed line 35b that receives the protruding line 35a. The ridge 35a protrudes from the intermediate portion in the width direction of the facing surface 32c facing each other, and the ridge 35b is formed in the intermediate portion in the width direction of the facing surface 32c. FIG. 27A shows an example in which the engaging slide structures 35 on both side edges have a line-symmetric shape, and FIG. 27B shows an example in which the shape is point-symmetric.

  In the case of having the engagement slide structure 35 having such a configuration, the cylindrical divided body 32 can be attached to the deformed steel bar 21 because one cylindrical divided body 32 can be directly engaged with the other cylindrical divided body 32. Simple.

In the correspondence between the configuration of the present invention and the configuration of the above-described embodiment,
The rod-shaped body of the present invention corresponds to the above-described deformed steel bar 21,
The present invention is not limited to the above-described configuration, and other configurations can be employed.

  For example, the rod-shaped body can be an appropriate one having longitudinal ribs and transverse ribs, instead of the existing deformed steel bar.

  The cylindrical divided body can be formed into an appropriate shape according to the form of the rod-shaped body. Depending on the shape of the cylindrical divided body, the contact portion of the locking protrusion is formed only at one end.

  In the above-described example, the contact portions are formed at both ends of the locking ridge. However, a protrusion corresponding to the contact portion for preventing co-rotation may be provided separately from the locking ridge.

  If the length of the cylindrical divided body is formed so as to largely protrude from the rotating cylindrical body, the male screw of the cylindrical divided body can be used for fixing another member.

  The locking protrusions of the cylindrical divided body do not have to be able to be locked to the lateral ribs adjacent in the longitudinal direction of the rod-like body as in the above-described example, and may be possible to separate lateral ribs. In this case, the height of the cylindrical divided body 32 can be increased.

DESCRIPTION OF SYMBOLS 21 ... Deformed bar steel 22a ... Vertical rib 22b ... Horizontal rib 31 ... Fastening structure provision apparatus 32 ... Cylindrical division body 32a ... Inner peripheral surface 32b ... Outer peripheral surface 33 ... Rotating cylindrical body 33a ... Cylindrical part 33c ... Contact surface 35 ... Engagement Combined slide structure 36 ... Locking protrusion 37 ... Inclined surface 38 ... Male screw 39 ... Female screw

Claims (5)

A plurality of cylindrical divided bodies surrounding the outer peripheral surface of a rod-shaped body that is a fastening structure application target in a shape in which the cylinder is divided in the circumferential direction
The rod-shaped body is provided with a longitudinal rib extending along the longitudinal direction on the outer peripheral surface, and a lateral rib extending in a direction orthogonal to the longitudinal direction and disposed with a gap in the longitudinal direction,
The inner peripheral surface of the cylindrical divided body is formed to have a larger diameter than the portion having the vertical rib and the horizontal rib of the rod-shaped body,
On the inner peripheral surface, one locking protrusion that is narrower than the interval between the lateral ribs and protrudes inward is formed,
A series of external threads are formed on the outer peripheral surface of the cylindrical divided body,
Fastening structure comprising a cylindrical cylindrical portion formed on the inner peripheral surface of a female screw threadedly engaged with the male screw, and a rotating cylindrical body having an abutting surface that does not move in the longitudinal direction of the rod-shaped body Granting device. An engagement slide structure is formed on the cylindrical divided body to engage with another cylindrical divided body disposed with the rod-shaped body interposed therebetween so as to be relatively movable in the longitudinal direction of the rod-shaped body. The fastening structure imparting apparatus according to claim 1. The fastening structure imparting device according to claim 1, wherein the cylindrical divided body includes a plurality of stages in the longitudinal direction of the rod-shaped body. The rod-shaped body is provided with a plurality of the vertical ribs,
The fastening structure imparting device according to any one of claims 1 to 3, wherein the cylindrical divided body has a shape divided at a position corresponding to the vertical rib. The fastening structure imparting device according to claim 3 or 4, wherein inclined surfaces that are inclined in the same direction are formed on opposing surfaces of the cylindrical divided members facing each other in the longitudinal direction of the rod-shaped body.

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