JP2010265720A - Temporary scaffold - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a temporary scaffold with nuts being free from becoming loose by fixing the scaffold to the nuts. <P>SOLUTION: The temporary scaffold 1 is characterized as follows. It is provided with a scaffold body 2 having a pre-determined length that is to be fixed to a nut N for screwing into a scaffold bolt B to be attached to a utility pole P and that projects in the direction intersecting the scaffold bolt B and with a fixing means 3 enabling the scaffold body 2 to be fixed to the nut N. The fixing means 3 is integrally provided with sockets 31a, 31b to be fixed with the sockets 31a, 31b to the nut N and is provided with rachet mechanisms 32a, 32b for fixing the scaffold body 2 to the nut N in the direction for the nut N to be tightened while allowing the scaffold body 2 to rotate under its own weight in the direction for the nut N to loosen. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a temporary scaffold that is temporarily installed using a nut screwed into a bolt attached to a utility pole when working on the utility pole.

  Conventionally, an operator has used a scaffold bolt as a scaffold for working on a utility pole. The scaffold bolt includes a bolt, a nut separate from the bolt, and a (spring) washer. The scaffold bolt is attached to the utility pole by being screwed into a scaffold socket embedded in the utility pole. Furthermore, the scaffold bolts are prevented from falling off the scaffold socket by tightening a washer and a nut (see, for example, paragraphs 0013 to 0016 of Patent Document 1).

JP 2001-25143 A

  However, all the various operations performed on the utility pole are limited in that they can be handled only by scaffold bolts provided in advance at predetermined locations on the utility pole. Therefore, due to the work performed on the utility pole, the worker may not be able to secure a sufficient scaffold. Therefore, the worker who performs such work may not be able to work smoothly.

  Therefore, when such work is involved, it is conceivable to temporarily install a scaffolding on the utility pole to secure the insufficient scaffolding. For example, as a method of temporarily installing a scaffold on a utility pole, a method of attaching a temporary scaffold to a nut screwed to a bolt attached to the utility pole can be considered.

  Here, when attaching a temporary scaffold to the nut, an operator must attach the temporary scaffold at a position where force is applied in a direction in which the nut is tightened. For example, if the worker attaches the temporary scaffold at a position where a force is applied in the direction in which the nut is loosened, the nut is loosened. Therefore, the worker cannot attach the temporary scaffold to the nut.

  Then, an object of this invention is to provide the temporary scaffold which a nut does not loosen by fixing to a nut in view of the problem mentioned above.

  The temporary scaffold according to the present invention is fixed to a nut that is screwed to a bolt attached to a utility pole, and has a predetermined length projecting in a direction intersecting the bolt, and the scaffold main body can be fixed to the nut. A temporary scaffold including a fixing means, wherein the fixing means allows the scaffold body to rotate by its own weight with respect to a direction in which the nut is loosened, and fixes the scaffold body to the nut in a direction in which the nut is tightened. And a ratchet mechanism.

  According to this configuration, when the temporary scaffold is fixed to the nut at a position where a force is applied in the direction in which the nut is loosened, the fixing means allows the scaffold body to rotate by its own weight. Therefore, the fixing means rotates the scaffold body by its own weight without rotating the fixed nut. And the scaffold main body will be in the state which fell below from the position which fixed the temporary scaffold to the nut. Since the temporary scaffolding is in such a position, the worker cannot put on his / her foot. Therefore, even if the temporary scaffold is fixed to the nut at a position where a force is applied in the direction in which the nut is loosened, no force is applied in the direction in which the nut is loosened. Therefore, the nut does not loosen by fixing the temporary scaffold so as not to move.

  In addition, when the temporary scaffold is fixed to the nut at a position where a force is applied in the tightening direction of the nut, the fixing means fixes the scaffold main body to the nut. Therefore, the scaffold main body remains in a position where the temporary scaffold is fixed to the nut. Since the temporary scaffold is in such a position, the worker can put his / her foot on the temporary scaffold. And even if an operator puts his foot on the temporary scaffold, the weight of the operator is added to the nut in the tightening direction. Therefore, the nut does not loosen by fixing the temporary scaffold so as not to move.

  Therefore, even if the worker fixes the temporary scaffold to the nut at a position where force is applied in either the direction in which the nut is loosened or tightened, the nut is loosened by fixing the temporary scaffold so that it does not move. There is no.

  The ratchet mechanism of the temporary scaffold according to the present invention includes a first ratchet mechanism capable of attaching a nut to an opening on one side of a through hole into which a bolt provided at one end of a scaffold main body can be inserted, and the through It has a 2nd ratchet mechanism which can attach a nut to the opening of the other side of a hole, and it can constitute so that the direction of rotation of the 1st ratchet mechanism and the 2nd ratchet mechanism may be reversed.

  According to such a configuration, first, the first ratchet mechanism is attached to a nut provided in the bolt by inserting the bolt from the opening on one side of the through hole. Then, when the temporary scaffold is fixed so as not to move to the nut at a position where force is applied in the direction in which the nut is loosened, the fixing means allows the scaffold body to be rotated by its own weight. Therefore, the scaffold main body is in a state of being lowered below the position where the temporary scaffold is fixed to the nut. Therefore, the worker cannot place his / her foot because the temporary scaffold is in such a position.

  Further, when the temporary scaffold is fixed so as not to move to the nut at a position where force is applied in the direction in which the nut is tightened, the fixing means fixes the scaffold body to the nut. Therefore, the scaffold main body remains in a position where the temporary scaffold is fixed to the nut. Therefore, since the temporary scaffold is in such a position, the worker can put his / her foot on the temporary scaffold.

  On the other hand, the rotating direction of the second ratchet mechanism is reversed from the rotating direction of the first ratchet mechanism. Accordingly, the second ratchet mechanism is attached to a nut provided in the bolt by inserting the bolt from the opening on the other side of the through hole. At this time, like the fixing means of the first ratchet mechanism, the second ratchet mechanism is fixed when the temporary scaffold is fixed so as not to move to the nut at a position where force is applied in the direction in which the nut loosens. Allows the scaffold body to rotate by its own weight. And the scaffold main body will be in the state which fell below from the position which fixed the temporary scaffold to the nut. Since the temporary scaffolding is in such a position, the worker cannot put on his / her foot.

  Further, when the temporary scaffold is fixed so as not to move to the nut at a position where force is applied in the direction in which the nut is tightened, the fixing means fixes the scaffold body to the nut. Therefore, the scaffold main body remains in a position where the temporary scaffold is fixed to the nut. Since the temporary scaffold is in such a position, the worker can put his / her foot on the temporary scaffold.

  Therefore, the operator inserts the bolt through the opening on one side and the other side of the through-hole, and moves the temporary scaffold to the nut at a position where force is applied in either the loosening direction or the tightening direction of the nut. Even if it fixes so that it may not, a nut does not loosen by fixing a temporary scaffold.

  In addition, the ratchet mechanism of the temporary scaffold according to the present invention has a claw in part, and the claw can be configured to be detachable from the ratchet by the inclination of the scaffold body.

  According to such a configuration, when the temporary scaffold is fixed so that it does not move to the nut at a position where a force is applied in the direction in which the nut is loosened, or the scaffold body tilts so that the claw is detached from the ratchet, the fixing means is The scaffold body is allowed to rotate by its own weight. And the scaffold main body will be in the state which fell below from the position which fixed the temporary scaffold to the nut. Since the temporary scaffolding is in such a position, the worker cannot put on his / her foot. Therefore, even if the temporary scaffold is fixed so as not to move to the nut at a position where a force is applied in the direction in which the nut is loosened, no force is applied in the direction in which the nut is loosened. Therefore, the nut does not loosen by fixing the temporary scaffold.

  In addition, when the temporary scaffold is fixed to the nut at a position where force is applied to the tightening direction of the nut, and the scaffold body is tilted so that the pawl is attached to the ratchet, the fixing means moves the scaffold body to the nut. Fix so that there is no. Therefore, the scaffold main body remains in a position where the temporary scaffold is fixed to the nut. Since the temporary scaffold is in such a position, the worker can put his / her foot on the temporary scaffold. And even if an operator puts his foot on the temporary scaffold, the weight of the operator is added to the nut in the tightening direction. Therefore, the nut does not loosen by fixing the temporary scaffold.

  Therefore, even if the worker fixes the temporary scaffold so that it does not move to the nut at a position where force is applied in either the direction in which the nut is loosened or tightened, the nut must be loosened by fixing the temporary scaffold. There is no.

  Moreover, the said scaffold main body of the temporary scaffold which concerns on this invention can be comprised so that it may be provided with the latching member which can latch the movement to the axial center direction of the volt | bolt of the said nut and fixing means. According to such a configuration, the temporary scaffold can lock the movement of the bolt in the axial direction.

  Moreover, the said scaffold main body of the temporary scaffold which concerns on this invention can be comprised so that it may be equipped with the suspension part for suspending work objects, such as a tool and material required on a utility pole. According to such a configuration, the worker can suspend the work object on the suspending portion.

  As described above, the temporary scaffold according to the present invention has an excellent effect that the nut is not loosened by being fixed to the nut.

(A) of the state where the temporary scaffold according to the first embodiment is attached to the nut, (a) is an external view of the state where the temporary scaffold is attached in the tightening direction of the nut, and (b) is an enlarged main portion around the nut of FIG. Figure. (A) of the temporary scaffold which concerns on 1st embodiment, sectional drawing cut | disconnected by the centerline of the longitudinal direction of the surface of a scaffold main body, (b) is AA sectional drawing of Fig.1 (a), (c) ) Shows a BB cross-sectional view of FIG. (A) of the state where the temporary scaffold according to the first embodiment is attached to the nut, (a) is an external view of the state where the temporary scaffold is attached in the loosening direction of the nut, and (b) is an enlarged view of the main part around the nut of FIG. Figure. (A) of the state which attached the temporary scaffold which concerns on 2nd embodiment to the nut is the external view seen from the upper part of a utility pole, (b) shows a side view.

  Hereinafter, a first embodiment of a temporary scaffold according to the present invention will be described with reference to FIGS.

<First embodiment>
The temporary scaffold which concerns on the embodiment demonstrates the example attached to the nut bolted by the scaffold bolt attached to the utility pole, specifically, this scaffold bolt. First, the scaffold bolt is screwed into a scaffold socket provided on the utility pole. Furthermore, the scaffold bolts are prevented from falling off the scaffold socket by tightening a washer and a nut.

  Specifically, the screw thread is formed along the peripheral surface of the scaffold bolt, and is attached to the utility pole by being screwed into a thread groove formed in the scaffold socket. At this time, the scaffold bolt can be loosened by rotating leftward toward the scaffold socket. Further, the scaffold bolt can be tightened by rotating rightward toward the scaffold socket.

  Further, the scaffold bolt is screwed with a nut in order to prevent the scaffold bolt from falling off the scaffold socket due to an applied force in the loosening direction. And this nut has prevented falling off by tightening toward a scaffold socket. At this time, the nut can be loosened by rotating leftward in the same manner as the scaffold bolt. Further, the nut can be tightened by rotating in the right direction. The temporary scaffold is attached to the nut attached to the scaffold bolt in this way.

  Next, the configuration of the temporary scaffold according to the first embodiment will be described with reference to FIGS. 1 and 2. 1A is an external view showing the temporary scaffold 1 fixed to the nut N for fixing the scaffold bolt B to the utility pole P, and FIG. 1B is the nut of FIG. It is a principal part enlarged view around N. FIG. 2A is a cross-sectional view of the temporary scaffold 1 cut along the center line in the longitudinal direction of the surface, and FIG. 2B is a cross-sectional view taken along the line AA in FIG. FIG. 2C is a cross-sectional view taken along the line BB in FIG.

  And the temporary scaffold 1 is fixed to the nut N for fixing the scaffolding bolt B to the utility pole P, and protrudes in the direction intersecting with the scaffolding bolt B, as shown in FIGS. 1 (a) and 1 (b). It is attached as follows. The temporary scaffold 1 includes a scaffold main body 2 having a predetermined length and a fixing means 3 capable of fixing the scaffold main body 2 to the nut N.

  As shown in FIG. 2, the scaffold main body 2 is a box having a hollow interior and a predetermined length. And the scaffold main body 2 has the holding part 21 which an operator hold | grips in order to attach the nut N to the intermediate part of a longitudinal direction. Further, the grip portion 21 is a portion that serves as a scaffold for putting a foot on, besides being gripped by an operator. Therefore, it is desirable that the length of the gripping portion 21 has a length that can be gripped by the operator and a length that allows the operator's feet to be hung.

  The scaffold body 2 has a through hole 22 into which a scaffold bolt B provided at one end in the longitudinal direction can be inserted. The through hole 22 penetrates both surfaces of the scaffold body 2. Further, the through hole 22 is also a portion into which the fixing means 3 is rotatably fitted. Details will be described later.

  Moreover, the scaffold body 2 includes a hanging portion for hanging the work object on the other end side opposite to the one end side having the through hole 22. The suspending portion according to the present embodiment is a suspending hole 23 that penetrates both surfaces in the same manner as the through hole 22. The work object is a tool, material, or the like required by the worker on the utility pole P. Specific examples of work objects include, for example, new expansion, replacement, and removal of power lines and communication lines (including optical fiber cables) on utility pole P, and new expansion, replacement, and removal of tools and equipment used for maintenance. In addition, materials such as cables, insulators, and fuses used during maintenance, and bags for storing these are included.

  Further, in order to fix the nut 3 so as not to move, the fixing means 3 includes a socket portion 31a having twelve corners and a ratchet mechanism that limits the rotation direction to one direction. The ratchet mechanism includes a first ratchet mechanism 32a capable of attaching a nut N to an opening on one side of the through hole 22, and a second ratchet capable of attaching a nut N to the opening on the other side of the through hole 22. And a mechanism 32b. Furthermore, the first ratchet mechanism 32a and the second ratchet mechanism 32b are integrated with the socket portions 31a and 31b, respectively.

  The socket portions 31a and 31b are sockets having a cylindrical outer shape. And the socket parts 31a and 31b have twelve angle numbers with respect to the hexagon nut N. Accordingly, the socket portions 31a and 31b can be fixed to the nut N fastened to the scaffold bolt B so as not to move at intervals of 30 degrees. And socket part 31a, 31b with which both surfaces of the scaffold main body 2 were equipped shall be the same size in this embodiment. Therefore, the temporary scaffold 1 may use any socket part 31a, 31b provided on both sides.

  The ratchet mechanisms 32a and 32b allow the scaffold body 2 to rotate by its own weight with respect to the direction in which the nut N is loosened, and fix the scaffold body 2 to the nut N in the direction in which the nut N is tightened. It is like that. That is, when the temporary scaffold 2 fixes the socket portions 31a and 31b to the nut N so as not to rotate, the scaffold main body 2 is allowed to rotate with respect to the direction in which the nut N is loosened, that is, the left rotational direction. At the same time, the nut N is fixed so as not to move with respect to the tightening direction of the nut N, that is, the rotation direction in the right direction.

  The first ratchet mechanism 32a is attached to the opening on the surface side in order to attach the surface of the scaffold body 2 toward the utility pole P side. Further, the second ratchet mechanism 32b is attached to the opening on the back surface side in order to attach the back surface of the scaffold body 2 toward the utility pole P side.

  Moreover, the 1st ratchet mechanism 32a and the 2nd ratchet mechanism 32b are attached so that the rotating direction may reverse. Therefore, when the first ratchet mechanism 32a is attached to the nut N that is inserted into the scaffold bolt N from one side of the through hole 22 (the surface side of the scaffold body 2) and is screwed to the base end of the scaffold bolt B, The one ratchet mechanism 32a allows the scaffold body 2 to rotate with respect to the direction in which the nut N is loosened, that is, the rotation direction in the left direction, and in the direction in which the nut N is tightened, that is, in the rotation direction in the right direction. It will be fixed so that it does not move. At this time, the rotation direction of the second ratchet mechanism 32b is reversed, and the scaffold body 2 is allowed to rotate with respect to the direction in which the nut N is tightened, that is, the rotation direction in the right direction. At the same time, the nut N is fixed so as not to move with respect to the loosening direction of the nut N, that is, the rotation direction in the left direction.

  However, when the second ratchet mechanism 32b is attached to the nut N, the first ratchet mechanism 32a reverses the front and back of the scaffold body 2 when the scaffold bolt N is inserted from one side of the through hole 22, that is, the scaffold. The bolt N is inserted from the other side of the through hole 22 (the back side of the scaffold main body 2) and attached to the nut N provided at the base end of the scaffold bolt B. At this time, since the second ratchet mechanism 32b reverses the direction of rotation when the first ratchet mechanism 32a is attached to the nut N, the scaffold body 2 is moved in the direction in which the nut N is loosened, that is, the rotation direction in the left direction. And is fixed so as not to move with respect to the direction in which the nut N is tightened, that is, the rotation direction in the right direction.

  The ratchet mechanisms 32a and 32b include ratchets 33a and 33b and claws 34a and 34b to restrict rotation in one direction and allow rotation in the other direction. The ratchets 33a and 33b are integrated with the sockets 31a and 31b, and the claws 34a and 34b are rotatably attached to the scaffold body 2.

  The ratchets 33a and 33b are a kind of gears and have a large number of teeth in the circumferential direction. The surfaces that face when the ratchets 33a and 33b rotate in one direction guide the claws 34a and 34b to other teeth in one direction, and also face when the ratchets 33a and 33b rotate in the other direction. The surface to be inclined is inclined in one direction so as to hook the claws 34a and 34b onto the teeth.

  The ratchets 33a and 33b each have an area larger than the opening area of the through hole 22. Therefore, the ratchets 33a and 33b can prevent the through holes 22 from falling off in the axial direction.

  Further, the claws 34 a and 34 b can be attached to and detached from the ratchets 33 a and 33 b by the inclination of the scaffold body 2. Specifically, the claws 34a, 34b include claw bodies 35a, 35b that can be attached to and detached from the ratchets 33a, 33b, and shaft portions 36a, 36b that rotatably attach the claw bodies 35a, 35b to the scaffold body 2. ing. And the nail | claw main body 35a, 35b has penetrated the base end part by this axial part 36a, 36b. The claws 34a and 34b are attached to the scaffold main body 2 so as to be rotatable about the shaft portions 36a and 36b. And the attached nail | claw main body 35a, 35b can be rotated in the range of the position where a front-end | tip part is hooked on the tooth | gear of ratchet 33a, 33b, and the position which is not hooked on the tooth | gear of this ratchet 33a, 33b.

  That is, when the scaffold body 2 is fixed so as not to move to the nut N at a position where the tips of the claws 34a and 34b are attached to the ratchets 33a and 33b by their own weight, the claws 34a and 34b are caught on the teeth of the ratchets 33a and 33b. Acts as a ratchet mechanism 32a, 32b. However, if the scaffold body 2 is fixed so that it does not move to the nut N at a position where the tips of the claws 34a, 34b are disengaged from the ratchets 33a, 33b due to their own weight, the claws 34a, 34b are not caught on the teeth of the ratchets 33a, 33b. The ratchet mechanisms 32a and 32b do not act and can be rotated.

  And since the ratchet mechanisms 32a and 32b which concern on this embodiment utilize as a scaffold, the temporary scaffold 1 is attached to the nut N in the position which cross | intersects the scaffold bolt B and becomes substantially horizontal. When the temporary scaffold 1 is fixed to the nut N so as not to move on the right side of the nut N, the scaffold body 2 is applied with a force in the clockwise direction of the nut N. That is, the force is applied to the scaffold body 2 in the direction in which the nut N is tightened. And the scaffold main body 2 is fixed in this attached position.

  However, when the temporary scaffold 1 is fixed to the nut N so as not to move to the left side of the nut N, the scaffold body 2 is applied with a force in the counterclockwise direction of the nut N. That is, a force is applied to the scaffold body 2 in the direction in which the nut N is loosened. In such a case, the scaffold main body 2 must be fixed at the attached position so that no force is applied to the direction in which the nut N is loosened. Therefore, the claws 34a and 34b are attached so as to be detached from the ratchets 33a and 33b at this position.

  Further, the ratchets 33a and 33b are provided with a plurality of teeth (18 in this embodiment). As a result, the angle of the temporary scaffold 1 changes depending on the tightening state of the nut N with respect to the scaffold bolt B, that is, the position and the position of the corner of the nut change. However, since one tooth contact adjustment angle of the ratchets 33a, 33b is 20 degrees (380 degrees / 18 = 20 degrees), the adjustment angle per corner of the twelve-angle socket portions 31a, 31b (360 degrees ÷ 12) (Angle = 30 degrees) can be adjusted more finely. Therefore, the attachment angle of the temporary scaffold 1 is not limited by the attachment angle of the nut N.

  Moreover, the 1st ratchet mechanism 32a and the 2nd ratchet mechanism 32b are each attached so that rotation is possible independently. That is, the 1st ratchet mechanism 32a and the 2nd ratchet mechanism 32b are provided with the partition plate 24 which isolates the surface side and the back surface side of the scaffold main body 2. The first ratchet mechanism 32 a and the second ratchet mechanism 32 b are restricted from moving in the axial direction of the through hole 22 across the partition plate 24. However, the partition plate 24 is provided with an opening that opens the opening on one side and the opening on the other side of the through hole 22 in order to allow the scaffold bolt B to be inserted into the through hole 22. The opening is an opening through which the scaffold bolt B including the head of the scaffold bolt B can be inserted.

  The distance in the axial direction from the opening of the through hole 22 to the partition plate 24 is longer than the thickness of the ratchets 33a and 33b. And each opening part of the through-hole 22 has a cylindrical part each extended toward inner side. Further, the ratchets 33 a and 33 b are disposed so as to be sandwiched between the cylindrical portion and the partition plate 24. Accordingly, the ratchets 33a and 33b can limit the movement of the through hole 22 in the axial direction. Therefore, the temporary scaffold 2 can securely fix the socket portions 31 a and 31 b to the nut N without shifting the socket portions 31 a and 31 b in the axial direction of the through hole 22.

  Next, a method for attaching the temporary scaffold according to the first embodiment will be described with reference to FIGS. 1 and 3. First, since the temporary scaffold 2 is of a size that can be easily carried by an operator, the operator can place the utility pole under the scaffold bolt B where the temporary scaffold 2 is necessary with the temporary scaffold 2 placed in a tool bag or the like. Ascend P.

  Then, the operator holds the grip portion 21 of the scaffold main body 2 and fixes the nut N to the fixing means 3 on both the front and back surfaces so as not to move. Specifically, in the present embodiment, the scaffold bolt B is inserted from the opening on one side (surface side) of the through hole 22 and the socket N is not moved to the nut N provided at the base end of the scaffold bolt B. To fix. Here, the temporary scaffold 1 is attached so as to be in an optimal position for the operator to use the grip portion 21 as a scaffold.

  For example, the socket portion 31a is fixed to the nut N so as not to move from the nut N as shown in FIGS. At this time, a force is applied to the temporary scaffold 1 to rotate it clockwise (rotate clockwise) with respect to the nut N by its own weight. However, since the claw 34a is attached to the ratchet 33a at this position, the ratchet mechanism 32a acts. Therefore, the scaffold body 2 is fixed at a position attached to the temporary scaffold 1. That is, the scaffold body 2 comes to be substantially horizontal from the nut N in the right direction. In the ratchet mechanism 32b, the nut N is not fixed to the socket portion 31b. Further, the nut N is not connected to the fixed socket portion 31a. Therefore, the ratchet mechanism 32a does not act at all.

  Further, the temporary scaffold 1 is fixed below the optimum position for using the gripping part 21 as a scaffold, and then rotated to the left (rotated counterclockwise) from there, and is substantially horizontal at the optimum position. You may fix by rotating the temporary scaffold 1 until it becomes. At this time, the temporary scaffold 1 is applied with a force to rotate (rotate clockwise) the nut N in the right direction. The scaffold body 2 is fixed to the nut N without rotating due to its own weight. However, when the temporary scaffold 1 is rotated counterclockwise (rotated counterclockwise) with respect to the nut N by an operator, the ratchet mechanism 32a acts to rotate the scaffold body 2. it can.

  Further, when the socket portion 31a is fixed so as not to move to the nut N so as to be substantially horizontal to the left from the nut N as shown in FIG. A force is applied to rotate leftward (counterclockwise). However, at this position, the claw 34a is disengaged from the ratchet 33a, so that the ratchet mechanism 32a does not act. Therefore, the scaffold main body 2 rotates with respect to the nut N by its own weight, falls downward from the position where the temporary scaffold 1 is fixed to the nut N, becomes substantially vertical, and stops rotating. Since the temporary scaffold 1 is in such a position, the worker cannot place his / her feet on the grip portion 21 of the scaffold body 2. Therefore, it can be recognized that the temporary scaffold 1 is attached at a position where a force is applied in the direction in which the nut N is loosened.

  Therefore, in the temporary scaffold 1 according to the present embodiment, the nut N is loosened regardless of whether the nut N is tightened in the loosening direction or the tightening direction. Can be fixed so that there is no.

  Further, in the temporary scaffold 1 according to the present embodiment, when the scaffold body 2 is attached so as to protrude in the left direction of the nut N, the claw 34a is detached from the ratchet 33a and is rotatable. However, even if the claw 34a is attached to the ratchet 33a, the ratchet mechanism 32a is operated at this position, and the temporary scaffold 1 is lowered below the position where the temporary scaffold 1 is attached to the nut N. However, when the weight of the temporary scaffold 1 is reduced, the ratchet mechanism 32a may not work when the weight of the temporary scaffold 1 becomes smaller than the force acting on the ratchet mechanism 32a.

  Even in such a case, the temporary scaffold 1 according to the present embodiment is configured such that the claw 34a is detached from the ratchet 33a. Therefore, the temporary scaffold 1 according to the present embodiment can be lowered below the position where the temporary scaffold 1 is attached to the nut N regardless of the weight of the temporary scaffold 1. Therefore, it can be surely recognized that it is attached at a position where force is applied.

  Moreover, the temporary scaffold 1 which concerns on this embodiment can suspend a work target object using the suspending hole 23. FIG.

  Further, the temporary scaffold 1 according to the present embodiment is attached to an optimum inclination by adjusting the number of teeth of the ratchets 33a and 33b so that the inclination of the scaffold body 2 is not limited by the position where the nut N is tightened. Can do.

  Further, when the nut N is loose, when the temporary scaffold 1 is attached to the nut N at a position where the claw 34a is attached to the ratchet 33a, the ratchet mechanism 32a acts on the temporary scaffold 2. Therefore, the scaffold body 2 is fixed at a position attached to the temporary scaffold 1. Further, the nut can be tightened by rotating in the right direction. Therefore, it is not necessary to take out the socket wrench from the tool bag or the like, and it can be easily attached. Moreover, since the nut N is not loosened accidentally, the operator can perform the operation with peace of mind.

  Next, a second embodiment of the temporary scaffold according to the present invention will be described with reference to FIG. FIG. 4A is an external view of the temporary scaffold 1 ′ attached to the nut N as seen from above, and FIG. 4B is a side view thereof.

<Second embodiment>
In addition to the temporary scaffold 1 according to the first embodiment, the temporary scaffold 1 ′ according to the embodiment is further configured such that the nut N and the ratchet mechanisms 32a and 32b are movable in the axial direction of the scaffold bolt B. A locking member 4 that can be locked is provided.

  The locking member 4 has a long plate member 41 and concave portions 42 and 43 attached to both ends of the plate member 41 at substantially right angles. And this board member 41 has the length to the inner side of the other socket part 31b and the head of scaffolding volt | bolt B in the state which attached one socket part 31a of temporary scaffold 1 'to the nut N. . Moreover, one recessed part 42 has the hollow which can be latched by the other socket part 31b. The other concave portion 43 has a recess that can be hooked to a bolt portion in which the thread groove of the scaffold bolt B is cut. The locking member 4 is formed in a U shape.

  And after attaching the temporary scaffold 1 to the nut N, this latching member 4 makes one recessed part 42 contact | abut the inner side of the head of the scaffolding bolt B with the other socket part 31b. The other concave portion 43 is hooked on the bolt portion. Therefore, the temporary scaffold 1 ′ supports the scaffold body 2 with the one concave portion 42 of the locking member 4 even if the scaffold body 2 moves in the axial direction of the scaffold bolt B as the operator works. be able to. The temporary scaffold 1 'can restrict the movement of the scaffold bolt B in the axial direction and can lock the nut N and the socket portion 31a. Therefore, the temporary scaffold 1 can prevent the socket portion 31a from falling off the nut N by moving in the axial direction.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of this invention.

  Moreover, although the temporary scaffold which concerns on the said embodiment demonstrated the example from which the nail | claw 34a, 34b was attachable / detachable from the ratchet 33a, 33b by the inclination of the scaffold main body 2, it is not limited to this, A nail | claw May be prevented from coming off the ratchet due to the tilt of the scaffold body. For example, the claw is attached by an elastic member so as to be always pressed against the ratchet, or is formed by an elastic material and is attached at a position where it is always attached to the ratchet.

  In such a temporary scaffold, for example, the socket portion is fixed to the nut N so as to be substantially horizontal in the right direction from the nut. At this time, a force to rotate the temporary scaffold to the right (rotate clockwise) with respect to the nut by its own weight is applied, and the ratchet mechanism acts. Therefore, the scaffold main body is fixed at a position attached to the temporary scaffold, that is, becomes substantially horizontal in the right direction from the nut.

  In addition, when the socket part is fixed to the nut so as to be substantially horizontal to the left from the nut, the temporary scaffolding attempts to rotate leftward (rotate counterclockwise) with respect to the nut by its own weight. A force is applied and a ratchet mechanism acts. Therefore, the scaffold main body is rotated by its own weight, and is lowered below the position where the temporary scaffold is fixed to the nut. Then, the scaffold body stops at a position that is substantially vertical. Since the temporary scaffold is in such a position, the worker cannot put his / her foot on the grip portion of the scaffold main body. Therefore, it can be recognized that the temporary scaffold is erroneously attached at a position where force is applied in the direction of loosening the nut.

  Therefore, even if it is such a temporary scaffold, the nut will not be loosened regardless of whether the nut is fastened to the nut fastened to the scaffold bolt so that the nut is loosened or tightened. Can be fixed.

  Moreover, the temporary scaffold which concerns on the said embodiment demonstrated the example attached so that the nail | claw 34a, 34b might remove | deviate from the ratchet 33a, 33b in the position which the inclination of the scaffold main body 2 protrudes to the left side of the nut N. However, the present invention is not limited to this, and the position where the nail is removed from the ratchet may be set to another inclination.

  Specifically, when the temporary scaffold is fixed at a position where the temporary scaffold protrudes to the right side from the nut, the operator can easily put the foot on the temporary scaffold. However, if the temporary scaffold is fixed at a position that protrudes diagonally downward to the right from the nut, it is difficult for an operator to put his or her foot on the temporary scaffold with the scaffold main body facing diagonally downward to the right. Therefore, the case where a nail | claw remove | deviates from a ratchet when it attaches in such a position is demonstrated.

  First, the claw is attached to the ratchet with the scaffold body protruding rightward from the nut, and attached to the position where the scaffold body is detached from the ratchet with the scaffold body protruding diagonally downward to the right. It is done. Specifically, the claw is set to a position where the tip is lowered substantially in a state where the base end is fixed to the scaffold main body. That is, as shown in FIG. 2B, the claw is at a position approximately 45 degrees in the upper right direction with the center of the through hole 22 as the center point with the through hole 22 on the left side and the hanging hole 23 on the right side. The position to be attached to the ratchet.

  And if this temporary scaffold is fixed in the position which protrudes rightward from a nut, the nail | claw will be attached to the ratchet and a ratchet mechanism will act. Therefore, as in the present embodiment, the scaffold main body is fixed to the nut at a position where the temporary scaffold is attached to the nut. Further, when the temporary scaffold is fixed at a position that protrudes diagonally downward to the right from the nut, the claw is detached from the ratchet, and the ratchet mechanism does not act. Therefore, the scaffold body is lowered below the position where the temporary scaffold is attached to the nut without being fixed to the nut. Therefore, when the worker attaches the temporary scaffold to an inappropriate position with respect to the nut, the scaffold main body can be lowered below the position where the temporary scaffold 1 is attached to the nut N, and is attached to the inappropriate position. Can be recognized with certainty.

  Therefore, even if it is such a temporary scaffold, the nut will not be loosened regardless of whether the nut is fastened to the nut fastened to the scaffold bolt so that the nut is loosened or tightened. Can be fixed.

  Moreover, although the temporary scaffold which concerns on the said embodiment demonstrated the example provided with the suspension hole 23 which penetrates the front and back of the scaffold main body 2 in order that a suspension part may suspend a work target object, it is not limited to this. Instead, the hanging part may be one in which a hanging hook is hooked in the hanging hole, or may be a notch part in which a part of the scaffold main body is notched. If this notch is provided at the other end in the longitudinal direction of the scaffold body, it can be used by using either the front or back side.

  Moreover, although the temporary scaffold which concerns on the said embodiment demonstrated the example which equips one end part of the scaffold main body 2 with socket part 31a, 31b and ratchet mechanism 32a, 32b one on both surfaces of back and front, it is limited to this. Instead of this, fixing means may be provided at both ends in the longitudinal direction of the scaffold body, or a plurality of ratchet mechanisms provided at one end or both ends of the scaffold body may be provided.

  Specifically, in the case where fixing means are provided at both ends of the scaffold main body, the temporary scaffold further includes a ratchet mechanism instead of the hanging portion provided at the other end of the temporary scaffold 1 according to the above embodiment. ing. The rotation direction of the ratchet mechanism attached to the other end is attached so as to be the same as the ratchet mechanism provided at one end of the scaffold main body attached to the same surface.

  Moreover, when attaching the nail | claw of a ratchet mechanism so that attachment or detachment is possible, it attaches to the position where the position of the nail | claw attached to the ratchet mechanism which has one end part, and the point symmetry of a rotating shaft. Therefore, even if any of the four ratchet mechanisms attached to the scaffold main body is used, the temporary scaffold does not loosen and can be easily fixed to the nut.

  In addition, in the case where a plurality of ratchet mechanisms provided on one or both of the front and back sides of one end and both ends of the scaffold main body are provided, the ratchet mechanisms are provided in the longitudinal direction on one side (or the other side) and both sides. Are provided in a row on the central axis of the. The socket portions may have different sizes or the same size.

  Further, the temporary scaffold according to the above embodiment has been described by taking the fixing means 3 having the two ratchet mechanisms 32a and 32b as an example, but the present invention is not limited to this, and the fixing means has one ratchet mechanism. May be.

  However, when it is possible to insert a scaffold bolt from both sides into one ratchet mechanism as in the above embodiment, depending on which side is attached to the nut, the position where the temporary scaffold can be fixed to the nut and the temporary scaffold Reverses the pivotable position. Therefore, you may make it attach the lid | cover which can open and close the opening part of the one side which can insert a scaffolding bolt with an elastic member. The lid is configured to close one of the openings by the elastic force of the elastic member from the inside.

  When attempting to insert the scaffold bolt from the opening on one side, the opening on the one side is closed by the elastic member and cannot be inserted. On the other hand, if the scaffold bolt is to be inserted through the opening on the other side, the inside of the lid can be pushed open by the top of the scaffold bolt. Therefore, when the scaffold bolt is inserted through the opening that is not closed by the lid (on the other side) and fixed to the nut so as not to move, the scaffold body is rotated by its own weight with respect to the loosening direction of the nut. In addition, it is possible to prevent the nut from loosening by fixing the scaffold body so as not to move to the nut in the tightening direction of the nut.

  Moreover, although the temporary scaffold which concerns on the said embodiment demonstrated the example in which socket part 31a, 31b and ratchet mechanism 32a, 32b were integrated, it is not limited to this, A socket handle like a socket side is demonstrated. The concave portion may be provided so as to be detachable by providing a convex portion on the ratchet mechanism side. Such a temporary scaffold is provided with a plurality of sockets having recesses for each size of the nut, so that the socket can be replaced according to the size of the nut, so that a single temporary scaffold does not move to various sizes of nuts. It becomes possible to fix to.

  Moreover, although the temporary scaffold which concerns on the said embodiment demonstrated the example attached to the nut N which fixes the scaffolding bolt B, it is not limited to this, In order to attach a brace etc., it protrudes from the outer peripheral surface of a utility pole. You may fix so that it may not move to the nut screwed in the protrusion bolt attached in the state.

  In addition, the temporary scaffolding according to the above embodiment has been described with an example in which the socket portions 31a and 31b are twelve corners. However, the present invention is not limited to this, and in order to firmly fix the socket portion to the nut N, the nut It is good also as a hexagon according to the number of corners. In this case, the inclination at which the temporary scaffold can be fixed to the nut so as not to move is an interval of 30 degrees because the socket portion is hexagonal. However, the temporary scaffold according to the present embodiment can be adjusted to the intended inclination by changing the number of teeth of the ratchet. In addition, since the example in which the nut N is a hexagon has been described, the case where the socket portion is a hexagon or a twelve corner has been described. However, the present invention is not limited to this. In this way, the number of corners of the socket part and the number of teeth of the ratchet can be selected.

  DESCRIPTION OF SYMBOLS 1 ... Temporary scaffold, 2 ... Scaffolding body, 21 ... Holding part, 22 ... Through-hole, 23 ... Hanging hole (hanging part), 3 ... Fixing means, 31a, 31b ... Socket part, 32a ... 1st ratchet mechanism, 32b ... second ratchet mechanism, 33a, 33b ... ratchet, 34a, 34b ... claw, 35a, 35b ... claw body, 36a, 36b ... shaft, 4 ... locking member, 41 ... plate member, 42 ... (one) Recess, 43 ... (the other) recess, P ... utility pole, B ... scaffolding bolt, N ... nut

Claims (5)

A temporary scaffold comprising: a scaffold main body of a predetermined length that is fixed to a nut that is screwed to a bolt that is attached to a utility pole, and projects in a direction intersecting the bolt; and a fixing means that can fix the scaffold main body to the nut. There,
The fixing means includes a ratchet mechanism that allows the scaffold body to rotate by its own weight with respect to a direction in which the nut is loosened, and has a ratchet mechanism that fixes the scaffold body to the nut in a direction in which the nut is tightened. scaffold.   The ratchet mechanism includes a first ratchet mechanism capable of attaching a nut to an opening on one side of a through-hole through which a bolt provided at one end of a scaffold body can be inserted, and a nut on an opening on the other side of the through-hole. The temporary scaffolding according to claim 1, further comprising a second ratchet mechanism to which the first ratchet mechanism and the second ratchet mechanism can rotate.   The temporary ratchet according to claim 1 or 2, wherein the ratchet mechanism includes a claw in a part thereof, and the claw is detachable from the ratchet by inclination of the scaffold body.   The said scaffold main body is a temporary scaffold in any one of Claims 1-3 provided with the latching member which can latch the movement to the axial center direction of the volt | bolt of the said nut and fixing means.   The said scaffold main body is a temporary scaffold in any one of Claims 1-4 provided with the suspension part for suspending work objects, such as a tool and material required on a utility pole.

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