JP5872519B2 - Ratchet tool for indirect hot wire work - Google Patents

Description

  The present invention relates to an indirect hot-wire work ratchet tool for fastening electric wire connecting bolts by an indirect hot-wire method using an insulating operation rod.

  The work of connecting the high-voltage pull-down line to the overhead power distribution high-voltage line is performed by an indirect hot wire method using an insulating operation rod.

  12 to 15 show a conventional operation of connecting a high-voltage pull-down line to an aerial power distribution high-voltage line. As shown in FIG. 12, when connecting a high voltage pull-down line to the overhead power distribution high-voltage line 110, a pull-down line connector 111 is used. A high voltage pull-down line (not shown) is connected to the lower end of the underline connector 111. The underline connector 111 includes clamp fittings 111a and 111b. By clamping the overhead power distribution high voltage line 110 between the clamp fittings 111a and 111b by tightening the bolt 112, the high voltage pull-down line becomes the overhead power distribution high voltage line. 110 is connected.

  The connection work of the high-voltage pull-down line to the overhead power distribution high-voltage line 110 is performed using the common operation rod 100 as an insulation operation rod. The connection holding part 2 is detachably mounted on the common operation rod 100 via a lock screw 103. An indirect ratchet wrench 3 is held by the connection holding part 2 so as to be rotatable about the axis P1. The indirect ratchet wrench 3 has a ratchet mechanism 31. The ratchet mechanism 31 is restricted in one direction of tightening rotation, and is idled when rotated in the reverse direction. One side of the ratchet mechanism 31 is connected to the socket 4 to which the head of the bolt 12 can be fitted.

  When the high-voltage pull-down line is connected to the overhead power distribution high-voltage line 110, the common operation rod 100 is operated in the vertical direction as indicated by the arrow F3 with the socket portion 4 fitted to the head of the bolt 112, and The upper end side of the common operation rod 100 is operated to draw a circle as indicated by an arrow F4. Thereby, the indirect ratchet wrench 3 rotates around the axis P <b> 2, and the bolt 12 of the underline connector 111 is tightened through the indirect ratchet wrench 3, so that the high voltage pull-down line passes through the underline connector 111. It is connected to the overhead power distribution high voltage line 110.

  As an example of the prior art of the present invention, an indirect hot wire drawing apparatus is known (for example, see Patent Document 1). This device has a tensioner and a gripper, and a ratchet wrench is attached to the end of the tension / sag adjustment mechanism.

JP 2013-62960 A

  However, in the operation of connecting the high-voltage pull-down line shown in FIG. 12 to FIG. 15 to the overhead power distribution high-voltage line, the ratchet mechanism 31 of the pull-down line connector 111 exhibits the ratchet function when the bolt 112 is loose. And the bolt 112 cannot be tightened using the ratchet function. Therefore, conventionally, as shown by an arrow F4, the upper end side of the common operation rod 100 is rotated many times many times, and the bolt 112 is rotated around the axis P2 in the tightening direction. Since the high-voltage line 110 swings greatly, the socket part 4 of the indirect ratchet wrench 3 may come off from the head of the bolt 112 during operation. That is, as shown in FIG. 13, when the upper end side of the common operation rod 100 is rotated many times, the overhead power distribution high-voltage line 110 connected to the underline connector 111 swings greatly, as shown in FIG. In addition, there is a problem that the socket part 4 fitted with the bolt 112 is disengaged from the head of the bolt 112 and the work does not proceed smoothly.

  Therefore, the present invention is an indirect method in which the loosened bolt can be rotated to a state where the ratchet mechanism can exert the function of the ratchet without repeatedly rotating the upper end side of the insulating operating rod many times. An object is to provide a ratchet tool for hot-line work.

In order to achieve the above-mentioned object, the invention according to claim 1 is connected to the distal end side of the insulating operation rod via a connection holding portion, and is rotatable about the connection holding portion by operation of the insulation operation rod. An indirect ratchet wrench, a ratchet mechanism part incorporated in a free end side opposite to the connection holding part of the indirect ratchet wrench, the tightening rotation direction being limited in one direction, and an axial direction of the ratchet mechanism part A socket connected to one side and engageable with the head of a bolt for connecting an electric wire, and connected to the other side in the axial direction of the ratchet mechanism, and the socket is rotated via the ratchet mechanism. an input shaft portion capable of being connected to the input shaft portion, the outer peripheral edge Ri by the insulated operating rod and another insulated operating rod comprises a disc having a graspable diameter, another insulating the The circle by the operation stick If but which is being gripped turning operation, indirect hot working ratcheting tool is characterized in that and a rotating plate capable of rotating the socket portion via the ratchet mechanism It is.

According to the present invention, in a state where the indirect ratchet wrench is stationary, the socket part is interposed via the ratchet mechanism part by gripping the outer peripheral edge part of the disk by another insulating operation rod and turning the turning board. The bolt that has been rotated and has been loosened is tightened until the ratchet mechanism portion can exert the function of the ratchet.

  According to a second aspect of the present invention, in the ratchet tool for indirect hot-wire work according to the first aspect, the rotating disk is detachable from the input shaft portion.

According to a third aspect of the invention, in an indirect hot working ratcheting tool according to claim 1 or 2, wherein the disc is characterized and Turkey, such a transparency acrylic plate.

According to a fourth aspect of the present invention, in the ratchet tool for indirect hot-wire work according to any one of the first to third aspects, the disk has a plurality of gripping plates arranged along the outer peripheral edge. The gripping plate is held rotatably with respect to the disk.

  According to a fifth aspect of the present invention, in the ratchet tool for indirect hot-wire work according to any one of the first to fourth aspects, the insulating operation bar is constituted by a common operation bar on which various tools can be mounted. It is characterized by being.

  According to the first aspect of the present invention, the loosened bolt is rotated to a state where the ratchet mechanism can exert the function of the ratchet by rotating the rotating disk with another insulating operation rod. Therefore, it is not necessary to rotate the upper end side of the insulating operation rod many times as in the prior art, and the peristalsis of the electric wire connected via the bolt can be suppressed. Thereby, it can prevent that the socket part by which the head part of a volt | bolt fits remove | deviates from the head part of a volt | bolt, and can perform the bolting operation | work smoothly.

  According to the second aspect of the present invention, since the turntable is detachable from the input shaft portion, the turntable can be detached from the input shaft portion in a work process that does not require the turntable. Moreover, the weight reduction of the ratchet tool for indirect hot wire work can be achieved. Therefore, the burden on the operation of the insulating operation rod can be reduced by the weight reduction of the ratchet tool for indirect hot wire work.

  According to the third aspect of the present invention, the rotating disk has a disk made of a transparent acrylic plate that can be rotated by an operation with another insulating operating bar. Thus, the position of the bolt can be confirmed, and the positioning of the head of the bolt and the socket portion is facilitated.

  According to the invention described in claim 4, since the grip plate arranged along the outer peripheral edge of the disk is held so as to be rotatable with respect to the disk, the grip plate is gripped by another insulating operation rod. Even if the disk is rotated in such a state, the frictional force between the gripping plate and another insulating operation rod accompanying the rotation of the disk can be reduced, and the disk can be smoothly rotated.

  According to the fifth aspect of the present invention, since the insulating operation bar is composed of a common operation bar on which various tools can be mounted, it is not necessary to newly manufacture a dedicated insulating operation bar, and the cost can be reduced. In addition, since the bolt can be tightened by operating the common operation rod familiar with the indirect hot wire method, the work can be smoothly performed.

It is a front view of the ratchet tool for indirect hot wire work concerning Embodiment 1 of the present invention. It is a perspective view of the ratchet tool for indirect hot wire work of FIG. It is a front view which shows the connection structure of the input shaft part and rotation board in the ratchet tool for indirect hot wire work of FIG. It is an expanded sectional view which follows the AA line of FIG. It is an expanded sectional view which follows BB of FIG. It is a front view of the rotation board in the ratchet tool for indirect hot wire work of FIG. It is a partial expanded sectional view of the turntable in the ratchet tool for indirect hot wire work of FIG. It is a front view which shows the state which made the ratchet tool for indirect hot wire operation | work of FIG. 1 approach the bolt of the connector for an underline. FIG. 3 is a front view showing a state in which the ratchet tool for indirect hot-line work of FIG. 1 is attached to a bolt of a connector for downline, and another common operation bar is brought close to a rotating board. It is a front view which shows the bolting operation | work of the bolt of the connector for the underlining by the ratchet tool for indirect hot wire operation | work of FIG. It is a front view which shows the whole common operation rod with which the ratchet tool for indirect hot-line work of FIG. 1 was mounted | worn. It is a perspective view which shows the bolting operation | work of the bolt of the connector for a draw-down line with the conventional ratchet tool for indirect hot wire work. It is a front view which shows the operation state of the ratchet tool for indirect hot-line work of FIG. It is a front view which shows the state which the ratchet tool for indirect hot wire operation | work of FIG. 12 removed from the volt | bolt of the connector for an underline.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 11 show an embodiment of the present invention. FIG. 11 shows a state where the ratchet tool 1 for indirect hot-line work according to the present invention is mounted on a common operation rod 100 as an insulating operation rod. In FIG. 11, the common operation rod 100 includes a connection shaft 101, a connection pin 102, a lock screw 103, a connection portion 105, an operation rod main body 106, and an insulating umbrella portion 107. The connection shaft 101 is located at the uppermost part of the common operation rod 100 and is a part to which the connection holding part 2 on the side of the indirect hot-line work ratchet tool 1 is fitted, and is formed in a columnar shape. The connection pin 102 is fixed to the connection shaft 101 and extends in a direction perpendicular to the axis of the common operation rod 100. The connection pin 102 can be engaged with a terminal end portion of a lock groove formed in the connection holding portion 2 on the side of the indirect hot-wire work ratchet tool 1.

  The lock screw 103 is screwed with a screw portion (not shown) formed below the connection shaft 101, and the connection holding portion 2 of the ratchet tool 1 for indirect hot-wire work that is engaged with the connection pin 102 is moved upward. It has a function to press. The connection holding part 2 is prevented from moving in the vertical direction and around the axis of the common operation rod 100 with respect to the connection shaft 101 by the pressing of the lock screw 103. The connecting portion 105 connects the connecting shaft 101 and the operating rod main body 106. The operation rod main body 106 is composed of a member having high electrical insulation and extends in the vertical direction. A plurality of truncated cone-shaped insulating umbrella portions 107 are provided in the middle of the operation rod main body 106 in the axial direction. The insulating umbrella portion 107 has a function of preventing rain attached to the upper end portion of the operating rod body 106 from flowing down to the lower end side of the operating rod body 106.

  FIG. 1 shows a ratchet tool 1 for indirect hot-line work. As shown in FIG. 1, the indirect hot-wire work ratchet tool 1 is used to tighten a bolt 112 of a pull-down connector 111. As shown in FIG. 1, when connecting a high voltage pull-down line (not shown) to the overhead power distribution high-voltage line 110, a draw-down connector 111 is used. The high voltage pull-down line is connected to the lower end of the underline connector 111. The high voltage pull-down line is an electric wire for supplying electric power from the high-voltage main line side to the low-voltage main line side, and the end of the high-voltage pull-down line is connected to the pole transformer side for converting voltage, for example. The underline connector 111 includes clamp fittings 111a and 111b. By clamping the overhead power distribution high voltage line 110 between the clamp fittings 111a and 111b by tightening the bolt 112, the high voltage pull-down line becomes the overhead power distribution high voltage line. 110 is connected.

  As shown in FIG. 1, the ratchet tool 1 for indirect hot wire operation includes a connection holding part 2, an indirect ratchet wrench 3, a socket part 4, an input shaft part 5, and a rotating board 6. The connection holding part 2 has a rotating shaft 2a and a holding part 2b. The rotation shaft 2 a extends in the lateral direction with respect to the common operation rod 100, and the axis P <b> 1 is orthogonal to the axis of the common operation rod 100. The rotation shaft 2a is rotatable around the axis P1, and a holding portion 2b is fixed to the end portion on the free end side. The holding portion 2 b has a function of holding one end portion of the indirect ratchet wrench 3.

  As shown in FIG. 1, the indirect ratchet wrench 3 has a ratchet wrench body 3a and a switching lever 3b. The indirect ratchet wrench 3 is rotatable about the axis P <b> 1 of the rotation shaft 2 a of the connection holding portion 2 by operating the common operation rod 100. The indirect ratchet wrench 3 has a ratchet mechanism 31. The ratchet mechanism 31 is incorporated on the free end side of the ratchet wrench body 3a located on the opposite side of the holding portion 2b of the connection holding portion 2. The ratchet mechanism 31 is restricted in one direction of tightening rotation, and is idled when rotated in the reverse direction. In this embodiment, the ratchet mechanism 31 cannot perform the ratchet function when the bolt 112 to be tightened is loosened, but when the bolt 112 is tightened with a constant torque, The ratchet function is demonstrated.

  A socket portion 4 is connected to one side of the ratchet mechanism portion 31 in the axial direction. The socket part 4 is comprised from the connection shaft 4a and the socket main-body part 4b. The socket body 4b can be fitted to the head of the bolt 112. The socket body 4b is formed in a cylindrical shape, and the inner surface side is formed in a hexagon that can be fitted to the head of the bolt 112. One end of the socket body 4b in the axial direction is connected to the connecting shaft 4a. The connecting shaft 4a is detachably connected to the ratchet mechanism 31. Thereby, the socket part 4 can be attached to and detached from the ratchet mechanism part 31, and another socket part for fastening a bolt of a shape other than the bolt 112 can be attached to the ratchet mechanism part 31. Yes.

  The input shaft portion 5 is connected to the other side of the ratchet mechanism portion 31 in the axial direction. The input shaft portion 5 has a function of rotating the socket portion 4 via the ratchet mechanism portion 31. As shown in FIG. 5, the input shaft portion 5 is formed in a cylindrical shape on one end side in the axial direction, and a female spline 5b is formed on the inner surface. The other end side in the axial direction of the input shaft portion 5 is formed as a solid connecting shaft 5 a, and the connecting shaft 5 a is connected to the ratchet mechanism portion 31. On the inner surface side of the female spline 5b of the input shaft portion 5, an engagement hole 5c that functions to prevent detachment is formed.

  A rotation board 6 is detachably connected to the input shaft portion 5. As shown in FIG. 1, the rotating board 6 has a function of rotating the socket portion 4 via the ratchet mechanism portion 31 by an operation with the common operation rod 100 and another common operation rod 200. The rotating disk 6 has a fitting shaft part 61, a disk 62, and a gripping plate 63. As shown in FIG. 4, the fitting shaft portion 61 has a shaft main body 61a that can be fitted to the input shaft portion 5, and a male spline 61b is formed on the outer peripheral surface of the shaft main body 61a. The male spline 61 b can be fitted to the female spline 5 b of the input shaft portion 5. The male spline 61b and the female spline 5b are slidable in the axial direction, and are engaged only in the direction around the axis P2. On the outer peripheral surface side of the male spline 61b of the shaft body 61a, an engagement ball 61c is attached so as to be able to appear and retract. The engagement ball 61c is configured such that a part thereof protrudes from the outer peripheral surface of the male spline 61b by a compression coil spring 61d. In a state where the input shaft portion 5 and the turntable 6 are connected, the engagement ball 61c enters the engagement hole 5c of the input shaft portion 5 and engages with the engagement hole 5c.

  The disc 62 is made of a transparent acrylic plate. A fitting shaft 61 is located at the center of the disk 62, and the disk 62 is connected to the fitting shaft 61. A plurality of gripping plates 63 are disposed on the disk 62 along the outer peripheral edge 62a. As shown in FIG. 7, the grip plate 63 is made of, for example, a material having a high friction coefficient, for example, rubber. The grip plate 63 is held so as to be rotatable with respect to the disk 62. The holding plate 63 has a holding shaft 63 a that is inserted into a holding hole 62 b formed in the disk 62, and a holding portion 63 b that is connected to the holding shaft 63 a and is located on both sides of the disk 62. The holding plate 63 is rotatable with respect to the disk 62 about the holding shaft 63a.

  Next, the procedure and operation of the connection work of the high-pressure pull-down line using the indirect hot-wire work ratchet tool 1 will be described.

  FIG. 8 shows a state immediately before the bolt 112 is tightened in the operation of connecting the high voltage pull-down line to the overhead power distribution high voltage line 110. As shown in FIG. 8, when connecting a high voltage pull-down line to the overhead power distribution high-voltage line 110, a draw-down connector 111 is used. The insulation coating has already been removed from the portion of the overhead power distribution high voltage line 110 where the underline connector 111 is attached. The part where the insulation coating is removed is sandwiched between clamp fittings 111a and 111b, and bolts 112 are inserted into the clamp fittings 111a and 111b. In this state, as shown in FIG. 8, the common operation rod 100 is operated by the operator so that the indirect hot-line work ratchet tool 1 approaches the bolt 112, and the socket portion 4 faces the head of the bolt 112. It is positioned at the position to do. When the socket part 4 is aligned with the head of the bolt 112, the common operation rod 100 is operated so that the socket part 4 moves to the bolt 112 side, and the socket part 4 is moved to the head of the bolt 112. To fit.

  FIG. 9 shows a state in which the socket part 4 is fitted to the head of the bolt 112. In a state in which the socket portion 4 is fitted to the head of the bolt 112, another common operation rod 200 is operated by the same operator so as to face the turntable 6, and the YATCO attached to the tip portion of the common operation rod 200 is operated. The clamp part 201 called is positioned immediately below the turntable 6. Next, as shown in FIG. 1, the disk 62 of the rotating disk 6 is gripped by the clamp portion 201 of the common operation bar 200, and as shown by the arrow F <b> 1, the rotating disk 6 is rotated by the operation of the common operation bar 200. It will rotate around the heart P2. When the turntable 6 is turned, this turning force is transmitted to the socket portion 4 via the input shaft portion 5 and the ratchet mechanism portion 31. In this state, as shown by the arrow F2, the socket part 4 rotates around the axis P2, and the bolt 112 fitted to the socket part 4 is rotated. Thereby, the bolt 112 in a loose state can be rotated until reaching a torque that allows the ratchet mechanism 31 to exhibit the ratchet function.

  Here, since the plurality of gripping plates 63 are arranged along the outer peripheral edge 62 a on the disk 62 of the turntable 6, the common operation rod 200 is held with the gripping plates 63 gripped by the clamp portions 201. By operating, the turntable 6 rotates smoothly around the axis P2. That is, each holding plate 63 is rotatable with respect to the disk 62 about the holding shaft 63a. Even if the disk 62 is rotated with the gripping plate 63 held by the clamp part 201, the frictional force between the disk 12 and the clamp part 201 can be reduced, and the disk 62 can be smoothly rotated. Become. Thereby, the labor at the time of operating the common operation stick 200 is reduced.

  When the loosened bolt 112 is rotated to a state in which the ratchet mechanism 31 can exhibit the ratchet function by operating the turntable 6, the bolt 112 is tightened by the common operation rod 100. FIG. 10 shows a tightening operation of the bolt 112 by the common operation rod 100. When the loosened bolt 112 is tightened with a predetermined torque by operating the turntable 6, the ratchet mechanism 31 can exert the ratchet function, and as shown in FIG. By operating the operating rod 100 in the direction of arrow F3 and operating in the direction of arrow F4 so that the tip of the common operating rod 100 draws a circle, the socket portion 4 rotates around the axis P2 via the indirect ratchet wrench 3. Thus, the bolt 112 is tightened.

  The ratchet mechanism 31 in this embodiment has a torque limiter function, and when the torque exceeds a predetermined torque, the ratchet mechanism 31 rotates idly. Therefore, the bolt 112 is not excessively tightened, and the bolt 112 is tightened with the predetermined torque. Can be tightened. Further, since the bolt 112 is tightened to some extent by the operation of the turntable 6, the amount of tightening using the indirect ratchet wrench 3 is small. There is no need to rotate it many times, and the socket portion 4 will not come off the head of the bolt 112.

  In this way, by rotating the disk 62 of the rotating disk 6 with another common operation rod 200, the loosened bolt 112 is rotated until the ratchet mechanism 31 can exert the function of the ratchet. Therefore, it is not necessary to rotate the upper end side of the common operation rod 100 many times as in the prior art, and the peristalsis of the overhead power distribution high-voltage line 110 connected via the bolt 112 can be suppressed. it can. Thereby, it can prevent that the socket part 4 with which the head part of the volt | bolt 112 is fitted remove | deviates from the head part of the volt | bolt 112, and the tightening operation | work of the volt | bolt 112 can be advanced smoothly.

  Further, since the turntable 6 can be attached to and detached from the input shaft portion 5, the worktable that does not require the turntable 6 can be detached from the input shaft portion 5 and indirectly live. The weight of the working ratchet tool 1 can be reduced. Therefore, the burden on the operation of the common operation rod 100 can be reduced by the weight reduction of the indirect hot-line work ratchet tool 1. Further, since the rotating board 6 has a disk 62 made of a transparent acrylic plate that can be rotated by an operation by another common operating rod 200, the operator of the shared operating bar 200 can use the bolt 112 via the disk 62. The position of the bolt 112 can be easily aligned with the socket portion 4.

  Since the grip plate 63 disposed along the outer peripheral edge 62 a of the disk 62 is rotatably held with respect to the disk 62, the disk 62 is held in a state where the grip plate 63 is gripped by another common operation rod 200. Even if the disc 62 is rotated, the frictional force between the grip plate 63 and the clamp portion 201 of the common operation rod 200 accompanying the rotation of the disc 62 can be reduced, and the disc 62 can be smoothly rotated. it can.

  Further, since the insulating operation rod is composed of the common operation rods 100 and 200 on which various tools can be mounted, it is not necessary to newly manufacture a dedicated insulating operation rod, and the cost can be reduced. And since the bolt 112 can be tightened by the operation of the existing common operation rods 100 and 200 familiar with the indirect hot wire method, the work can be smoothly advanced.

  The embodiment of the present invention has been described in detail above, but the specific configuration is not limited to the above-described embodiment, and even if there is a design change or the like without departing from the gist of the present invention, It is included in this invention. For example, in this embodiment, the turntable 6 is detachable from the input shaft portion 5, but the turntable 6 may be connected to the input shaft portion 5. In this embodiment, the female spline 5b is formed on the input shaft portion 5 side and the male spline 61b is formed on the turntable 6 side. However, the female spline 5b is formed on the turntable 6 side, The spline 61b may be formed on the input shaft portion 5 side. Furthermore, although the indirect hot-line work ratchet tool 1 showed the example operated by the common operation stick | rod 100 which can mount | wear with the various tools used with an indirect hot-wire method, the indirect hot-line work ratchet tool 1 is shown. It is good also as a structure which mounts | wears and uses for a dedicated insulation operating rod.

DESCRIPTION OF SYMBOLS 1 Ratchet tool for indirect hot wire work 2 Connection holding part 3 Indirect ratchet wrench 31 Ratchet mechanism part 4 Socket part 5 Input shaft part 5b Female spline 6 Turning board 61b Male spline 61c Engaging ball 62 Disc 63 Grasping plate 100 Shared operation rod (Insulation operation bar)
110 High-voltage wire (electric wire) for overhead power distribution
111 Underline connector 112 Bolt 200 Another common operation rod (another insulation operation rod)

Claims (5)

An indirect ratchet wrench connected to the distal end side of the insulating operation rod via a connection holding portion, and rotatable about the connection holding portion by operation of the insulation operation rod;
A ratchet mechanism part incorporated in the free end side of the indirect ratchet wrench that is located on the opposite side of the connection holding part, and the tightening rotation direction is limited to one direction;
A socket part that is coupled to one side of the ratchet mechanism in the axial direction, and can be fitted to the head of a bolt for connecting an electric wire,
An input shaft connected to the other side of the ratchet mechanism in the axial direction and capable of rotating the socket through the ratchet mechanism;
Is connected to the input shaft portion, the insulated operating rod and another with a disk outer peripheral edge Ri by the insulated operating rod has a graspable diameter, said another insulating operation rod the disc is gripped by the times of A rotating board capable of rotating the socket part via the ratchet mechanism part when it is operated and
A ratchet tool for indirect hot-line work characterized by comprising:   The ratchet tool for indirect hot-wire work according to claim 1, wherein the turntable is detachable from the input shaft portion. The circular plate has, indirect hot working ratcheting tool according to claim 1 or 2, characterized in the Turkey such a transparency acrylic plate. The disc has a plurality of gripping plate disposed along the outer peripheral edge, said gripping plate claims 1, characterized in that it is held rotatably relative to the disc 3 The ratchet tool for indirect hot wire work of any one of these .   The ratchet tool for indirect hot-wire work according to any one of claims 1 to 4, wherein the insulating operation bar is constituted by a common operation bar on which various tools can be mounted.

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