JP2007104791A - Tightening tool and method for tightening member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tightening tool and a method for tightening a member, wherein the efficiency of work of tightening a bolt member, a nut member, or the like in electric facility installation work applying a live wire operation method, is significantly improved. <P>SOLUTION: The tightening tool includes: an attached body for applying tightening force to a tightened portion of a tightened member when it is attached to the tightened portion from the outer circumferential side and holds the tightened member; and a linear body for applying torque to the attached body for tightening. The attached body is in such a three-dimensional shape that it includes: a holding portion provided in its center for receiving the tightened portion and holding it; and a winding and disposing portion for winding and disposing the linear body in a position on the outer circumference of the holding portion. The linear body is wound and disposed on the winding and disposing portion with its one end fixed on the attached body. The linear body is so constructed that when the other end of the linear body is pulled, it is unwound and applies torque to the attached body. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a tightening tool such as a bolt or a nut member or a tightening method, and more specifically, in an electrical installation work for performing a tightening work of a distribution line, attachment of various members around a column, etc. In recent years, there has been widespread use of indirect hot wire tools such as hot sticks (insulating rods for hot wires) and keeping the wires in a live state without a power outage, and tightening suitable for such work The present invention relates to a tightening method for tools and members.

  FIG. 6 is a diagram illustrating an example of a standard mounting column in which uninterruptible work using an indirect hot-wire tool is performed. The pole 60 here includes a utility pole 61, arm brackets (arms) (62a, 62b), insulators (g1, g2, g3, g4, g5, g6), and a retaining part (c1, c2, c3, c4, c5, c6), electric wires (d10-d11-d12, d20-d21-d22, d30-d31-d32), and other members, and the distribution lines stretched between the power poles are retained. The various members arranged are held and electric power is supplied to consumers.

FIGS. 7-10 is a figure which shows the example of the tool used with the indirect hot wire construction method by an uninterruptible power failure.
FIG. 7 shows a common operation rod (hot stick, hot wire insulation rod). This common operation rod is made of an insulating material made of an elongated rod-like body, and is provided with twist lock fittings (1, 8) at both ends, and a tightening tool or the like is directly connected to the twist lock fitting 8 at one end. It can be connected and an operator can operate this from the other end side. Using this common operation rod, a tightening member or the like located at a position close to the charging unit can be remotely operated by an operator at a distance to perform a tightening operation.

FIG. 8 shows an insulating YAT used in the indirect hot wire method, the tip of which is provided with a tip fitting 1 and the other rod-shaped portion is made of an insulating material, and the tip fitting 1 is a lever linked to this. The operation of Yatco or its function can be performed using the 5.
FIG. 9 shows one of the tools used in the indirect hot wire method, which includes a hook 91 at the tip and an insulating rod 92 at the lower end, for example, as a bind punch for hitting a bind. It is a suitable tool to be used.

  FIG. 10 shows an indirect torque ratchet used in the indirect hot wire method, and a distal end portion is provided with a tightening portion a1 for receiving and tightening a bolt or a nut, and an arm portion b1 connected thereto and a rotatable joint portion c1. The other end portion is provided with a connecting portion d1. An insulating rod or the like is directly connected and connected to the connecting portion d1, and the arm portion b1 can be rotated around the tightening portion a1 by moving the connecting portion d1 up and down. By the vertical movement operation of the arm portion b1, the tightening portion a1 advances in a certain rotational direction, and the member set in the tightening portion a1 can be tightened or loosened with a desired torque.

  In electrical installation work using the uninterruptible indirect hot line method, when an operator installs or tightens a member such as a bolt or nut, the member is placed in a live line state or a position close to the live line. In such a case, since it is dangerous for an operator to approach these members, the worker must perform at least a predetermined distance (for example, 1.5 m or more). Therefore, by attaching a tool that enables tightening of the member to the tip of the hot stick (insulating bar), an operator who is holding the hot stick and is in a remote position operates the hot stick. These members were tightened.

  Here, an indirect hot wire method (uninterruptible work) using hot sticks will be described with a specific example. In order to prevent bird nests from being built on or around the poles (electric poles), there is a work to install a nest prevention device that can deter bird placement on the arm of the electric pole. FIG. 4 is a diagram showing an example of the shelter device, and the windmill-type shelter device 43 here is attached to the arm metal 42 of the utility pole 41 by using a hot stick (hot wire insulating rod). .

  The nest device 43 is mounted and mounted on the arm metal 42 of the utility pole 41. For this purpose, a mounting bracket 43a having a crotch shape or a heel shape having an inverted U-shaped cross section (a cross-section "U" shape), and this A lateral support arm portion 43b that is supported by being extended from the mounting bracket 43a in a substantially horizontal direction, and a vertical support arm portion 43c that is supported by being extended from the support arm portion 43b to a celestial direction at a right angle are integrally provided. A windmill portion 43d that rotates in the horizontal direction is provided at the upper end of the vertical support arm portion 43c. This nest device 43 has a mechanism for rotating the windmill portion 43d by the wind, and can prevent the birds from flying or stopping there, thereby preventing the bird's nest from being formed. is there.

The attachment portion 43a of the nest device 43 has three surfaces, that is, left and right side surfaces (a1, a2) and an upper surface portion a3, and the lower side is a downward open side surface portion a4. When the nest device 43 is attached to the arm metal 42 of the utility pole 41, it is disposed at a predetermined position of the arm metal 42 via the space between the open side surface portion a4 or the upper surface portion a3 and the bolt B1.
Here, the inner (interval) dimension of the left and right side surfaces (a1, a2) of the web protection device 43 is formed to match the dimension between the left and right side surfaces of the arm metal 42, and the upper surface of the attachment portion 43a. When the inner surface of a3 is arranged on the upper surface of the arm metal 42, the inner surface of the side surface portions (a1, a2) of the attachment portion 43a is designed to come into contact with both the left and right side surfaces of the arm metal 42.

  And since the lower side of the attachment part 43a of this nest device 43 becomes the open side part a4, after arrange | positioning the attachment part 43a in the predetermined position of this arm metal 42, two side parts (a1, a2) The mounting portion 43a is fixed to the arm metal 42 by inserting a bolt B1 that passes through the bolt B1, inserting a nut N1 into the bolt B1, tightening the nut N1, and applying a tightening force to the open side surface a4.

  At this time, the bolt B1 is inserted from right to left in FIG. 4B, but the nut member N1 and the washer w1 are inserted into the bolt B1 from left to right. Then, as the nut member N1 is rotated and tightened and proceeds from the left side to the right direction, the washer w1 also moves from left to right, preventing the nut member N1 and the washer w1. Tightening (rotation) of the nut member N1 is continued until the nest device 43 comes into contact with the outer surface of the left side surface portion a2 and cannot move.

  Further, when the nut member N1 is tightened to the bolt B1, it is preferable that the members do not rotate together. Specifically, in FIG. 4 (2), the inner surface Bt ′ of the head Bt at the right end of the bolt B1 is in a position in contact with the right outer surface of the right side surface a1 in FIG. 4 (2). In this case, a structure is formed in which the mutual members are locked or engaged with each other to prevent rotation and prevent co-rotation.

  Further, in FIG. 4 (2), the left end portion of the bolt B1 passes through the hole of the left side surface portion a2 and is inserted in the left direction, but the bolt B1 is connected to the left side surface portion a2. Is set so as to protrude from the outer surface to the left by a predetermined length (h1). This is to anticipate a longer length with a margin so that it can be easily tightened using an indirect hot wire tool when attaching the nest device 43 to the brace 42 in accordance with the indirect hot wire method in an uninterruptible state, This is because the bolt B1 is designed.

  Thus, as shown in FIG. 4 (2), when attaching the nest prevention device 43 to the arm metal 42, the nut N1 is first screwed from the left end of the bolt B1, and tightened while turning the nut N1. In other words, it is necessary to move h1 by a predetermined distance. In the indirect hot wire method using uninterruptible power, the nut N1 is tightened using an indirect ratchet as shown in FIG. However, since the length of the bolt B1 is considerably long, the distance when the nut N1 is turned and tightened becomes long, and in the tightening method using the indirect ratchet, the hot stick in the unstable work place at the high place is used. There is a problem that it takes a long time and the workability is poor.

Patent documents related to the technical field of the present invention include the following.
JP 2005-172752 A Utility Model Registration No. 3073464

As mentioned above, in electrical installation work such as uninterruptible indirect hot-wire construction, workers cannot do it directly with regard to tightening bolts and nut members, etc. ) Or an indirect ratchet or other indirect hot tool, and tightening must be performed. However, such a tightening work requires skill in an unstable work place at a high place, and there is a problem that the work efficiency is not good because it takes a lot of time and labor for workers.
In view of such problems, the present invention provides a tightening tool and a member tightening method capable of greatly improving the efficiency of tightening work such as bolts and nut members in electrical installation work and the like. It is an object.

(1) A mounting body that is attached to and holds the tightening portion of the tightening member from the outer peripheral side, and applies a tightening force to the tightening portion;
A tightening tool comprising: a linear body for applying a rotational force for tightening to the mounting body;
The mounting body has a holding portion provided at the center for receiving and holding the tightening portion, and a winding for winding and arranging the linear body at an outer peripheral position of the holding portion. A three-dimensional shape having an arrangement part;
One end side of the linear body is fixed to the mounting body and is wound around the winding arrangement portion, and the other end side of the linear body is pulled while the winding is unwound. The tightening tool was configured to give a rotational force to the mounting body.

(2) In the tightening tool of (1),
The mounting body is configured by disposing a cut portion for attaching and detaching the tightening portion to and from the holding portion between an outer surface and the holding portion.

(3) A member tightening method using the tightening tool of (1) or (2),
Attaching the tightening tool obtained by winding a linear body around a mounting body to a tightening site of the tightening member;
Pulling one end side of the linear body of the tightening tool, applying a rotational force to the mounting body while unwinding the linear body, and temporarily tightening the tightening member;
Removing the mounting body from the tightening site;
Using a tool for indirect hot wire, performing the final tightening of the tightening member;
A method of tightening a member characterized by comprising:

Further, the tightening method of the member can include a step of arranging the tightening member at a predetermined mounting position.
(A) After attaching the tightening tool wound around the mounting body to the tightening portion of the tightening member, the tightening member on which the tightening tool is mounted is used for indirect hot wire. Using a tool, place it at a predetermined mounting position,
(B) After the fastening member is arranged at a predetermined mounting position using an indirect hot wire tool, the fastening tool in which the linear body is wound around the mounting body is used with an indirect hot wire tool. It is good to carry out by either attaching to the fastening site | part of the said fastening member.

  According to the tightening tool of the present invention, bolts and nuts can be used in electrical installation work such as an uninterruptible indirect hot wire method without using an indirect hot wire tool such as a hot stick (hot wire insulation rod) or an indirect ratchet. The member tightening work such as can be performed, and the work efficiency can be greatly improved. In addition, the member tightening method using the tightening tool according to the present invention greatly improves the efficiency of work processes including member tightening work such as bolts and nuts in electric construction using an indirect hot wire tool. Can do.

Next, an embodiment according to a tightening tool according to the present invention and a member tightening method using the tightening tool will be described in detail with reference to the accompanying drawings.
FIG. 1 (1) is an external perspective view showing an embodiment of a tightening tool according to the present invention, and FIG. 1 (2) is an external perspective view showing another embodiment of the same tightening tool.
The tightening tool 100 of FIG. 1 (1) has an annular solid shape as a whole of a thread winding member, and a mounting body 10 provided with a hollow hole 11 and a holding portion 12 in the center, and this mounting tool. A linear body 16 that is wound around the body 10 and rotates the mounting body 10 is a main component.

The tightening tool 100 has a mounting body 10 which is formed in the shape of a bobbin body in appearance, and is mounted on a tightening portion of a tightening member such as a bolt or a nut from its outer peripheral side. Can accept it and hold it. The mounting body 10 is provided with a hollow hole 11 and a holding portion 12 in the center for mounting to a tightening site, and a tightening force can be applied while the tightening site is held there.
The mounting body 10 here can be formed from a material such as metal, wood, rubber, resin, etc., but as a tightening portion of a tightening member such as a bolt or nut, for example, a hexagonal tightening portion is common, By forming the mounting body 10 with a material having elasticity such as rubber or resin, the hexagonal tightening portion is inserted into the hollow hole 11 and the holding portion 12 to form a structure for receiving and holding it. be able to.

A linear body 16 is wound around the mounting body 10 of the tightening tool 100. The material of the linear body 16 is made of fiber, resin, metallic wire, thread, thin string, etc. For the convenience of use as a wire tool, it is preferable to use nylon fiber or carbon fiber which is insulative and tension is applied.
Further, the mounting body 10 of the tightening tool 100 has a winding arrangement portion 13 for winding and arranging the linear body 20 at a position on the outer circumference of the annular holding portion 12. The winding arrangement portion 13 is formed as a circumferential concave groove portion as shown in FIG.

  The linear body 16 is provided with a knob portion (knob portion) 16a at one end portion, and the other end portion is fixed (adhered) to a predetermined position on the side of the mounting body 10, for example, the winding arrangement portion 13. ing. Then, the linear body 16 here is slightly tightened so that the end portion is stretched slightly so that the end portion is pulled, and most of the linear body 16 is wound around the winding arrangement portion 13 of the mounting body 10. The tool 100 is prepared.

  The mounting body 10 of the tightening tool 100 is mounted on a tightening portion of a tightening member such as a bolt or a nut and applies a pulling force to the knob portion 16a side of the linear body 16. Then, the mounting body 10 starts to rotate in the pulling direction, and the linear body wound around the mounting body 10 is gradually released, and the mounting body 10 itself holds the tightening portion of the tightening member. Therefore, the tightening member that is the same body rotates together with the mounting body 10 as it is.

FIG. 1 (2) is an external perspective view showing another example of the tightening tool according to the present invention.
The tightening tool 200 shown in FIG. 1 (2) includes a mounting body 20 provided with a hollow hole 21 and a holding portion 22 in the center, and a linear body that is wound around the mounting body 20 and rotates the mounting body 20. 26 is a main component. The mounting body 20 is provided with a winding arrangement portion 23 formed of a concave groove portion in a circumferential shape, and one end of the linear body 26 is fixed to a fixing portion 23 a that is a predetermined part of the winding arrangement portion 23. . The linear body 26 of the tightening tool 200 is shown in a state in which it is unwound and is hung downward, and has a ring-shaped knob portion 26a at its lower end. Further, the holding portion 22 of the mounting body 20 is formed in a hexagonal cross section so as to conform to the shape of the tightened portion of the hexagon bolt or hexagon nut.

  FIG. 2 is a view showing an example in which the tightening tool is mounted on the tightening portion of the tightening member (here, the nut 52). FIG. 2 (1) shows a state before the tightening tool is mounted, and FIG. 2) is an external perspective view showing a state after the tightening tool is mounted. The fastening member shown in FIGS. 2 (1) and 2 (2) is a mounting bracket 50 similar to that shown in FIG. Can be mounted on the armature of a utility pole.

  The mounting portion 50 in FIG. 2 (1) has three plane portions, that is, left and right side portions (a1, a2) and an upper surface portion a3, and the lower side is a downward open side surface portion a4. A bolt 51 as a fastening member is provided through the left and right side surfaces (a1, a2) in parallel with the upper surface portion a3 so as to close the open side surface portion a4. A nut 52 is fitted to the end of the nut, and this becomes a tightening portion. 2 (2) is a view showing a state in which a tightening tool is attached to the nut 52 of FIG. 2 (1). 2 (1) and 2 (2), the head of the bolt 51 is behind the right side surface a1 and is not shown, but the head of the bolt 51 and the right side surface a1 do not rotate together. ing. Furthermore, although the nut 52 has been described here as a tightening part, the hexagonal head of the bolt 51 can be used as the tightening part.

When the mounting portion 50 is disposed at a predetermined position of the arm of the utility pole, the mounting portion 50 is disposed at a predetermined position of the arm metal via the open side surface portion a4 in a state where the bolt 51 is not attached. be able to.
Even when the bolt 51 is attached, there is a space S between the upper surface portion a3 and the bolt 51, so that the arm metal can be inserted into the space S, and the attachment portion 50 is placed at a predetermined position of the arm metal. Can be arranged.

  3 (1) to 3 (3) are diagrams showing another embodiment of the tightening tool. The tightening tool 300 in FIG. 3A is configured by disposing a cut portion K (cut portion) between the winding arrangement portion 33 and the holding portion 32 on the outer surface side of the mounting body 30. Yes. Since the mounting body 30 of the tightening tool 300 is formed of a highly elastic material such as rubber or resin, it can be freely deformed and stretched, and the tightening part such as a nut or a bolt head can be attached to the holding portion 32. Placement insertion and removal can be easily performed. However, by providing a cut-off portion K on the mounting body 30 so that it can be opened and closed, the insertion and removal of the tightening portion can be performed more easily. it can. In addition, the cut portion K is provided with an enlarged opening k1 between the holding portion 32 and has a structure that is easier to open, thereby further detaching the tightened portion such as a nut or bolt head from the holding portion. It can be done easily.

  FIG. 3 (2) is a diagram showing a state when the tightening tool 300 is attached to a cross-sectional hexagonal member 38 such as a nut or a bolt head. The mounting body 30 can be attached to the cross-sectional hexagonal member 38, which is a tightening part of the tightening member, so as to be surrounded from the outer peripheral side, and can be held to apply a tightening force to the cross-sectional hexagonal member 38. The tightening force is given by the rotational force when the winding of the linear body 36 is unwound, which is executed by applying a downward tension T1 to the knob 36a at the end of the linear body 36. .

  FIG. 3 (3) is a diagram showing a state when the mounting body 30 mounted on the cross-sectional hexagonal member 38 is detached from the cross-sectional hexagonal member 38 following FIG. 3 (2). In FIG. 3B, when a tension T <b> 1 is applied to the linear body 36, the mounting body 30 mounted on the cross-sectional hexagonal member 38 rotates in the left direction and gives a rotational force to the cross-sectional hexagonal member 38. When the winding of the linear body 36 is completely unwound, the fixed portion 33a in the winding arrangement portion 33 is exposed and stops at a position where it cannot be rotated any more. When the tension T <b> 2 is further applied, the mounting body 30 is pulled and moved downward, so that the cut portion K expands left and right, and the mounting body 30 comes off from the cross-sectional hexagonal member 38.

Next, a member tightening method using the tightening tool 400 will be described with reference to FIG.
In the member tightening method according to the present invention, a construction is performed in which the nest device BS is attached to the arm 42 of the utility pole. At that time, the attaching portion 50 is placed on the arm 42 by the bolt 51 and the nut 52 penetrating. Shall be installed.
First, a step of attaching a tightening tool 400 in which a linear body is wound around a mounting body to a nut 52 which is a tightening portion of the tightening member is performed.
Next, one end side of the linear body of the tightening tool 400 is pulled to apply a rotational force to the mounting body while unwinding the linear body, and the nut 52 held by the mounting body is tightened to tighten the bolt 51 and The step of temporary tightening is performed.

Next, a step of removing the mounting body of the tightening tool 400 from the nut 52 is performed. In this step, if the attachment body of the tightening tool 400 has a cut (cut), it can be easily detached from the nut 52 by pulling the linear body strongly. If the attachment body of the tightening tool 400 has no cuts (cuts), it may be removed using an indirect hot wire tool such as an insulating Yatco.
Next, the nut 52 is finally tightened using an indirect hot wire tightening tool such as an insulating ratchet.

Here, the material tightening method according to the present invention may include a step of arranging the tightening member 50 including the bolt 51 and the nut 52 at a predetermined mounting position of the arm metal 42.
At this time, it may be performed by any of the following.
(A) The tightening tool 400 in which the linear body is wound around the mounting body is mounted on the ground on the nut 52 fitted to the bolt 51 of the tightening member 50, and the tightening member on which the tightening tool 400 is mounted One set “clamping member 50 + bolt 51+ (clamping tool 400 + nut 52)” is prepared on the ground, and is arranged at a predetermined mounting position of the arm metal 42 on the mounting pillar using an indirect hot wire tool. ,

(B) Prepare one set of fastening members “fastening member 50 + bolt 51 + nut 52” on the ground, and place them at a predetermined mounting position of the arm metal 42 on the mounting pillar using an indirect hot wire tool. Then, the tightening tool 400 in which the linear body is wound around the mounting body is mounted on the nut 52, which is the tightening portion of the tightening member, using an indirect hot wire tool.

(1) is an external perspective view showing an embodiment of a tightening tool according to the present invention, and (2) is a view showing another embodiment. It is a figure which shows the example which mounts | wears with the fastening site | part (here nut) of the fastening member by the fastening tool by this invention. FIG. 6 shows another embodiment of a tightening tool according to the invention. It is a figure which shows attachment of a nest | blocking apparatus as an example of the equipment which can apply the fastening tool by this invention, and the fastening method of the member using this. It is explanatory drawing about the fastening method of the member using the fastening tool by this invention. It is a figure which shows the example of the standard mounting column in which the uninterruptible construction using an indirect hot wire tool is performed. It is a figure which shows a common operation stick as an example of the tool used with an indirect hot wire construction method. It is a figure which shows an insulating Yatco as an example of the tool used with an indirect hot wire construction method. It is a figure which shows a bind punch as an example of the tool used with an indirect hot wire construction method. It is a figure which shows an indirect torque ratchet as an example of the tool used with an indirect hot wire construction method. It is a figure which shows the support bracket attached to the armrest of a utility pole as an example of the equipment which can apply the fastening method of the fastening tool and member using this by this invention.

Explanation of symbols

100, 200, 300 Tightening tool 10, 20, 30 Mounted body 11, 21, 31 Hollow hole 12, 22, 32 Holding part 13, 23, 33 Winding arrangement part
16, 26, 36 Linear body 16a, 26a, 36a Knob part (knob part)
38 Hexagonal section member (nut or bolt head)
42 Arm of metal pole 50 Mounting member a1 Left side surface a2 Right side surface a3 Upper surface portion a4 Open side surface portion 51 Bolt 52 Nut S Space between upper surface portion a3 and bolt 51 K Cut portion (cut portion)
k1 Expansion opening BS

Claims (3)

A mounting body that is mounted on the tightening portion of the tightening member from the outer peripheral side and holds it, and applies a tightening force to the tightening portion;
A tightening tool comprising: a linear body for applying a rotational force for tightening to the mounting body;
The mounting body has a holding portion provided at the center for receiving and holding the tightening portion, and a winding for winding and arranging the linear body at an outer peripheral position of the holding portion. A three-dimensional shape having an arrangement part;
One end side of the linear body is fixed to the mounting body and is wound around the winding arrangement portion, and the other end side of the linear body is pulled while the winding is unwound. A tightening tool characterized by being configured to apply a rotational force to a mounting body. The tightening tool according to claim 1,
The tightening tool, wherein the mounting body is configured by disposing a cut portion for attaching / detaching the tightening portion to / from the holding portion between an outer surface and the holding portion. A member tightening method using the tightening tool according to claim 1 or 2,
Attaching the tightening tool obtained by winding a linear body around a mounting body to a tightening site of the tightening member;
Pulling one end side of the linear body of the tightening tool, applying a rotational force to the mounting body while unwinding the linear body, and temporarily tightening the tightening member;
Removing the mounting body from the tightening site;
Using a tool for indirect hot wire, performing the final tightening of the tightening member;
A method of tightening a member characterized by comprising:

Images