JP2019035469A - Gradient washer corotation prevention tool, gradient washer to channel material and attaching method of bolt - Google Patents

Abstract

To provide a gradient washer corotation prevention tool capable of retaining a gradient washer and a bolt without corotation easily with one-hand, and to provide an attaching method of a gradient washer and a bolt to a channel material using the corotation prevention tool.SOLUTION: A gradient washer 60, and a bolt 50 or a nut 70 which penetrates the washer are retained at the same time with a head 10 and it is prevented that the gradient washer 60 is rotated in following-up with fastening of the bolt 50. A pair of heads 10, 20 are provided, each head 10, 20 is provided with a rotation prevention part which is attached to the gradient washer 60 and a bolt head part 51 or nut 70, the heads 10, 20 are connected with a connection member 30 while corresponding the heads 10, 20 to each bolt head part 51 or the nut 70 which are opposite to each other, and an abutting part 40 which is elongated in such a direction as to intersect with an axis of the bolt 50 on the heads 10, 20 and is abutted on a fixed member is provided.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a gradient washer rotation prevention device and a method of attaching a gradient washer and a bolt to a channel material. In more detail, the gradient washer and the bolt that penetrates the gradient washer are simultaneously held by the head, and the gradient washer rotation prevention device that prevents the gradient washer from rotating following the tightening of the bolt and a channel using the same. The present invention relates to a method of attaching a gradient washer and a bolt to a material.

  As the anti-rotation device as described above, the one described in the following Patent Document 1 is known. According to this document, since it is difficult to fasten the gradient washer and the bolt at the same time, a receiving portion for individually fitting both the gradient washer and the bolt head is provided.

  However, according to the technique of the same document, since it is configured as a spanner for a single bolt, it must be held by hand while maintaining the posture of this spanner, and the nut must be operated with another spanner. When the working environment was high, etc., further reduction of work labor was expected.

JP 2003-191171 A

  In view of such a conventional situation, the present invention provides a gradient washer rotation prevention device capable of holding a gradient washer and a bolt more easily and without rotation with one hand, and a gradient to a channel material using the same. It aims at providing the attachment method of a washer and a bolt.

  In order to achieve the above object, the gradient washer anti-rotation device according to the present invention is characterized in that the gradient washer and the bolt or nut passing through the gradient washer are simultaneously held by the head, and the gradient washer follows the tightening of the bolt. A pair of the heads, each head is provided with an anti-rotation portion fitted to the side face of the gradient washer and the bolt head or nut, and the pair of bolts are provided for each flange of the channel material, etc. The heads correspond to the bolt heads or nuts facing each other through the fixed member, and the heads are connected by connecting members, and at least one of the heads intersects the axis of the bolt. A contact portion extending in a direction to contact the fixed member is provided.

  According to this feature, the gradient washer is prevented from being shifted with respect to the inclination of the flange by the rotation of the gradient washer along with the bolt in the rotation preventing portion provided in the pair of heads. Even if it is fitted to both bolts and the nut is tightened, the abutting part prevents the rotation of the gradient washer rotation prevention tool. It is very easy to work because it is possible to fasten the nut by tightening the nut from the outside with another spanner by simply holding the gradient washer rotation prevention tool with one hand.

  In the above feature, the abutting portion may be only one of the two heads, or may be provided on both. By providing the abutting portions on both of the heads, it is possible to effectively cope with the torque generated in the nut, and the posture of the gradient washer rotation prevention tool with respect to the channel material is further stabilized.

  In the above feature, each head may correspond to a bolt having a different nominal diameter.

  On the other hand, the method of attaching the gradient washer and the bolt to the channel material using the gradient washer anti-rotation device is characterized in that the gradient washer and the bolt or nut passing through the gradient washer are simultaneously held by the head, and the gradient washer is In the method for preventing the rotation following the tightening of the bolt, the gradient washer rotation prevention tool has a pair of heads, and each head is fitted to the side surface of the gradient washer and the bolt head or nut. The heads correspond to the bolt heads or the nuts in a posture in which a pair of bolts pass through the flanges of the channel material, and the heads are connected to each other by a connecting member. And a contact portion that extends in a direction intersecting the axis of the bolt and contacts the fixed member. The heads are fitted to the bolt heads or the nuts and the gradient washers that are in contact with each other, and the gradient washer rotation prevention device is attached to the channel member in a state where the contact portion is in contact with the end face of the flange. It is to press to the web side and to fasten the nut screwed to the tip of each bolt or each bolt head.

  According to the above features of the gradient washer rotation preventing device according to the present invention and the method of attaching the gradient washer and the bolt to the channel material using the same, the gradient washer and the bolt can be more easily held with one hand without being rotated. It became possible to do.

  Other objects, configurations, and effects of the present invention will become apparent from the following embodiments of the present invention.

It is a perspective view which shows the construction method using the gradient washer rotation prevention tool concerning this invention. It is the perspective view which described the state by which a channel material is assembled | attached. It is a longitudinal cross-sectional view of the state of FIG. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a figure which shows the gradient washer rotation prevention tool which concerns on this invention, (a) is a front view, (b) is a left view, (c) is a right view, (d) is a top view, (e) is a figure. Since it is a bottom view and the back view is symmetrical with the front view, it is omitted. It is a perspective view of the gradient washer rotation prevention tool which concerns on this invention. It is a longitudinal cross-sectional view of the gradient washer rotation prevention tool which concerns on this invention. It is FIG. 3 equivalent view which shows the construction example of different nut arrangement | positioning using the gradient washer rotation prevention tool which concerns on this invention.

  Next, the gradient washer rotation preventing device 1 according to the present invention will be described in more detail with reference to FIGS.

  As shown in FIGS. 1 to 4, the gradient washer rotation preventing device 1 according to the present invention includes two bolts 50, a gradient washer 60 and a nut for two horizontal channel members 100 b with respect to a pair of flanges 102 of the vertical channel member 100 a. 70 is to be fixed.

  The channel member 100 which is a member to be fixed is formed such that the pair of flanges 102 become thinner toward the tip, and as a result, the inside of the flange 102 is tapered. Since the bolt 50 or the nut 70 is inclined to contact with the taper, a gradient washer 60 having a gradient corresponding to the taper is used. The bolt 50, the gradient washer 60, and the nut 70 in this embodiment are fixed to both flanges 102 having different nominal diameters. The first bolt 50a, the first gradient washer 60a, and the first nut 70a have a large nominal diameter, and the second bolt 50b, the second gradient washer 60b, and the second nut 70b have a small nominal diameter. The through holes 103, 103 of both flanges 102, 102 are formed at the same position in the flange. Note that the shortest distance from the center of the through hole 103 to the end of the flange 102 and the shortest distance from the center of the first inner rotation preventing portion 11 described later to the surface in contact with the end of the flange 102 of the contact portion 40 are substantially the same. The first inner rotation preventing portion 11 is formed so as to be. The same applies to the shortest distance from the center of the second inner rotation preventing portion 21 to the surface in contact with the end of the flange 102 of the abutting portion 40.

  As shown in FIGS. 1 to 9, the gradient washer rotation prevention tool 1 is provided on a pair of heads 10, 20, a connecting member 30 that connects these heads 10, 20, and these heads 10, 20. A contact portion 40 extending in a direction M intersecting the axes L1 and L2 and contacting the channel material 100 is provided. The first head 10 includes a first inner rotation preventing portion 11 fitted to the first bolt 50a or the first nut 70a having a large nominal diameter, and a first outer rotation preventing portion 12 fitted to the first gradient washer 60a. I have. On the other hand, the second head 20 includes a second inner rotation preventing portion 21 fitted to the second bolt 50b or the second nut 70b having a small nominal diameter, and a second outer rotation preventing portion 22 fitted to the second gradient washer 60b. It has.

  The abutting portion 40 extends in a direction M perpendicular to and intersects with the connecting member 30 arranged in the longitudinal direction in parallel with the axes L1 and L2 of the bolt 50 so as to abut on the edge of the flange 102 of the channel member 100. It is provided. In the present embodiment, the contact portion 40 is stable because almost the entire back surface thereof is in contact with the edge of the flange 102. However, since the contact portion 40 is intended to endure the torque generated in the bolt 50, it may be configured to contact the flange 102 only at the tip portion having a larger rotational moment. The contact portion 40 may be provided on only one side of the first and second heads 10 and 20.

  In use, as shown in FIGS. 1 to 5, the bolts 50 are respectively passed through the through holes 103 of the flange 102 in the vertical channel member 100 a and the through holes 104 of the web 101 in the horizontal channel member 100 b. Each bolt 50 has the bolt head 51 inside the flange 102, passes through the gradient washer 60, passes through the through holes 103 and 104, and manually tightens the nut 70.

  After aligning the direction of the gradient washer 60 and the bolt head 51, the rotation of the gradient washer is adjusted so that the rotation prevention portions 11, 12, 21, 22 are fitted to the gradient washers 60a, 60b and the bolts 50a, 50b. The prevention tool 1 is brought close to the flange 102 of the vertical channel member 100a. With each hand 40 in contact with the flange 102 with one hand, the spanner 200 is operated with the other hand to tighten the nut 70 and the fixing of the lateral channel member 100b is completed.

  The first bolt 50a and the second bolt 50b may be temporarily fixed at the same time to perform the fixing operation. However, the first bolt 50a and the second bolt 50b may be temporarily fixed individually to perform the fixing operation one by one. You can go.

  Further, unlike the above, as shown in FIG. 9, the fixing operation may be performed by positioning the threaded portion 51 and the nut 70 of each bolt 50 inside the flange 102 of the vertical channel member 100a. In this case, the nut 70 is fitted to the first and second inner rotation preventing portions 11 and 21, and the bolt heads 51 of the respective bolts 50 are operated by the spanner 200.

  The member fixed to the vertical channel member 100a is not limited to the horizontal channel member 100b, and may be an angle member, a steel box or the like in which an instrument is stored. Moreover, as long as it is a member which requires the gradient washer 60, you may use it as a to-be-fixed member instead of the vertical channel material 100a. In the above embodiment, the heads 10 and 20 correspond to the bolts 50a and 50b having different nominal diameters. However, the heads 10 and 20 may correspond to the bolts 50 having the same nominal diameter.

  INDUSTRIAL APPLICABILITY The present invention can be used as a tool for fixing work using a nut at a high place such as a telephone base station or an antenna.

1: Gradient washer rotation prevention tool, 10, 20: Head, 10: First head, 20: Second head, 11, 12, 21, 22: Anti-rotation part, 11: First internal anti-rotation part, 12: First outer rotation prevention part, 21: second inner rotation prevention part, 22: second outer rotation prevention part, 30: connecting member, 40: contact part, 50: bolt, 50, 51: bolt head, 52: Threaded part, 60: Gradient washer, 70: Nut, 50a: First bolt, 60a: First gradient washer, 70a: First nut, 50b: Second bolt, 60b: Second gradient washer, 70b: Second nut, 100: Channel material (fixed member), 101: Web, 102: Flange, 103, 104: Through hole, 100a: Vertical channel material, 100b: Horizontal channel material, 200: Spanner, L1, L2: Bolt shaft, M : Crossing direction

  In order to achieve the above object, the gradient washer anti-rotation device according to the present invention is characterized in that the gradient washer and the bolt or nut passing through the gradient washer are simultaneously held by the head, and the gradient washer follows the tightening of the bolt. A pair of the heads, each head having a side surface of the gradient washer and a rotation preventing portion that fits to the bolt head or nut, and the pair of bolts in the axial direction of these bolts. The heads correspond to the bolt heads or the nuts facing each other in a posture that is separated and penetrates fixed members such as flanges of the channel material, and the heads are connected to each other by connecting members. At least one of them is provided with a contact portion that extends in a direction intersecting the axis of the bolt and contacts the fixed member.

On the other hand, the method of attaching the gradient washer and the bolt to the channel material using the gradient washer anti-rotation device is characterized in that the gradient washer and the bolt or nut passing through the gradient washer are simultaneously held by the head, and the gradient washer is In the method for preventing the rotation following the tightening of the bolt, the gradient washer rotation prevention tool has a pair of heads, and each head is fitted to the side surface of the gradient washer and the bolt head or nut. A prevention part is provided, and a pair of bolts are separated in the axial direction of these bolts, and the heads are connected to the bolt heads or nuts in a posture passing through the flanges of the channel material. And a contact portion that extends in a direction intersecting the axis of the bolt and is in contact with the fixed member. The heads are fitted to the bolt heads or the nuts and the gradient washers that are penetrated through the flanges and are spaced apart from each other in the axial direction of the bolts, and the abutting portions abut against the end surfaces of the flanges. In this state, the gradient washer rotation prevention tool is pressed against the web side of the channel material, and the nut screwed into the tip of each bolt or each bolt head is tightened.

Claims (4)

Gradient washer and a bolt or nut that passes through the gradient washer are simultaneously held by the head, and the gradient washer is prevented from rotating following the tightening of the bolt.
A pair of the heads are provided, each head is provided with an anti-rotation portion fitted to the side surface of the gradient washer and the bolt head or nut, and the pair of bolts face each other in a posture that penetrates fixed members such as flanges of the channel material. The heads correspond to the bolt heads or the nuts, and the heads are connected by a connecting member, and at least one of the heads extends in a direction crossing the axis of the bolt and contacts the fixed member. Gradient washer anti-rotation device provided with an abutting portion in contact therewith. The gradient washer anti-rotation device according to claim 1, wherein the abutting portion is provided on both the heads. The gradient washer rotation prevention tool according to claim 1 or 2, wherein each head corresponds to a bolt having a different nominal diameter. Gradient to channel material using a gradient washer anti-rotation device that simultaneously holds a gradient washer and a bolt or nut passing through the gradient washer with a head and prevents the gradient washer from rotating following the tightening of the bolt. A method for attaching washers and bolts,
The gradient washer rotation prevention device has a pair of the heads, each head including a rotation prevention portion fitted to the side surface of the gradient washer and the bolt head or nut, and the pair of bolts penetrates each flange of the channel material. The heads are made to correspond to the bolt heads or the nuts in the postures, the heads are connected by a connecting member, and the fixed member extends in a direction crossing the axis of the bolt to at least one of the heads. Is provided with a contact portion to contact
A state in which the heads are fitted to the bolt heads or the nuts and the gradient washers facing each other through the flanges, and the bolts are opposed to each other, and the contact portion is in contact with the end surface of the flange. The gradient washer and bolt are attached to the channel member by pressing the gradient washer anti-rotation device against the web side of the channel member and tightening the nut screwed to the tip of each bolt.

Images