JP4353830B2 - Protective tube desorption device - Google Patents

Description

  The present invention relates to a protective tube detaching apparatus, and more particularly, to a device that can smoothly connect a protective tube even when a so-called leg portion protruding from a main body portion of a protective tube that accommodates an electric wire is large.

Conventionally, in order to prevent an electric shock by touching an electric wire or damaging the electric wire itself during construction work, the protective wire is put on the electric wire before construction work is performed. (For example, refer to Patent Document 1). This protective pipe is generally attached to the electric wire using a protective pipe desorption device, and since the electric wire is installed to ensure insulation from the outside, the protective pipe is protected according to the voltage flowing through the electric wire. The type of tube is also properly used (see, for example, Patent Document 2).
JP 2000-188816 A JP 2000-197225 A

  Here, for example, as shown in FIG. 9A, the protective tube 100 that accommodates the 6 KV electric wire has a main body portion 101 formed in a long cylindrical shape, and one end side of the main body portion 101. A receiving portion 102 that is formed and expands in a trumpet shape and a plug portion 103 that is formed on the other end side of the main body portion 101 and is inserted into the receiving portion 102 are provided. When the insertion portion 103 is inserted into the receiving portion 102, the protective tube 100 has a flange-shaped portion 103a at the tip of the insertion portion 103 attached to the ring-shaped portion 102a whose inner diameter is enlarged in the middle of the receiving portion 102. A plurality of them can be connected by engaging them, and the receiving part 102 and the plug-in part 103 can be separated by applying a certain pulling force.

  Further, as shown in FIG. 9B, the protective tube 100 is formed with leg portions 104 that protrude from the outer surfaces of the main body portion 101, the receiving portion 102, and the insertion portion 103 and continue in the extending direction. The leg portion 104 has a structure in which two leg plates 104a and 104b with the outer surfaces on both sides are extended to face each other to ensure a distance from the inside of the main body portion 101 to the end side (insulation from the inside). For this reason, the protective tube 100 has a structure in which the leg plates 104a and 104b of the leg portion 104 are expanded so as to be separated from each other so that the electric wire D is accommodated and attached while the electric wire D is pulled out and detached. It has become. The protective tube 100 can easily engage and release the ring-shaped portion 102a of the receiving portion 102 and the flange-shaped portion 103a of the insertion portion 103 by expanding the leg portion 104.

  However, for example, as shown in FIG. 10, the protective tube 200 that accommodates the 22 KV electric wire is similar to the 6 KV protective tube 100, the main body portion 201, the receiving portion 202, the insertion portion 203, A leg portion 204 is provided, and a plurality of pieces can be separably connected by engaging the ring shape portion 202a of the receiving portion 202 and the flange shape portion 203a of the insertion portion 203. Since it corresponds to a high voltage, the leg part 204 is formed wide. For example, the width of the leg portion 104 (width from the main body portion 101 to the end side) is about half of the diameter of the main body portion 101 in the 6KV protective tube 100, whereas the leg portion is in the 22KV protective tube 200. The width of 204 is set to about the diameter of the main body 201.

  Therefore, when the leg portion 204 is expanded so that the electric wire can be accommodated in the main body portion 201 of the 22 KV protection tube 200 guided by the guide device, the leg portion of the previous protection tube 200 is provided. If one of the leg plates 204a and 204b hits 204, it cannot be connected so that the leg 204 overlaps in the front and back, which may hinder smooth connection work.

  This problem is likely to occur only in the connecting operation of the large 22 KV protective tube 200 of the leg 204, and may also occur in the connecting operation of the relatively small 6 KV protective tube 100 of the leg 104. Is not only a significant problem.

  Therefore, an object of the present invention is to provide a protective tube detaching device that realizes smooth connection of the protective tubes regardless of the size of the leg portions and is excellent in compatibility.

According to a first aspect of the protective tube detaching apparatus that solves the above-described problem , a guide is inserted between the legs of the protective tube, and the outer peripheral protruding portion on the rear end side is moved to the guide side to move the protective tube. An apparatus for attaching and detaching a pipe to an electric wire, wherein the leg part is detached from the guide and the main part of the protective pipe sent out to the electric wire side is installed, and the engaging part is brought into contact with the outer peripheral protruding part and engaged therewith; A restricting portion for restricting rotation of the protective tube by setting the leg portion of the protective tube with which the engaging portion engages with the outer peripheral protruding portion, and an arm body including the engaging portion and the restricting portion on one end side A support member that rotatably supports the other end side of the arm body and allows the engaging portion and the restricting portion on one end side to move between the movement path of the protective tube and the outside of the movement path; A locking arm equipped with is attached to the distal end side of the guide that sends the protective tube to the electric wire side The engaging surface of the engaging portion that is engaged with the outer peripheral protruding portion of the protective tube is rotated so that the separation distance from the rotation fulcrum on the other end side of the arm body is separated from the moving path of the protective tube. It is formed in the slope which inclines so that the back end side may become long rather than the front end side of a direction .

According to the present invention, the protective tube sent to the electric wire side is properly fitted with the outer peripheral protrusion on the rear end side being engaged and the rotation of the leg is restricted so that the position of the subsequent protective tube and the leg coincides. Locked (temporarily stopped) in posture . Then, when the succeeding protective pipe that has the guide inserted between the legs is connected to the protective pipe that has been sent to the wire side earlier, the previous protective pipe is moved along with the movement of the subsequent protective pipe. The engaging surface that hits the outer peripheral protrusion of the tube is pushed. The engagement surface is inclined so as to be separated from the rotation fulcrum of the locking arm toward the rear end side rather than the front end side in the rotation direction to be separated from the movement path of the protection tube. The abutment portion begins to slide from the front end side to the rear end side in the separation rotation direction, and is disengaged from the movement path so as to allow the protective tube to be fed out. Therefore, it is possible to continuously connect to the previous protective tube simply by feeding the next protective tube while guiding it to the guide, and connecting the protective tubes sequentially by simply feeding the protective tube continuously. A plurality of protective pipes can be connected in succession by repeatedly releasing the engaging part and the restricting part from the movement path of the protective pipe.

According to a second aspect of the protective tube detaching apparatus that solves the above-mentioned problems, in addition to the specific matters of the first aspect, the arm main body moves upward to move the engaging portion and the restricting portion of the protective tube. The supporting member is supported by the supporting member so as to be separated from the path, and the supporting member urges the arm body in the upward rotation direction, and the engaging portion and the restricting portion are caused by the own weight of the arm body side. A torsion spring that is set to an urging force that is lowered to the moving path of the protective tube is provided .

In this invention, the locking arm provided with the engaging portion and the restricting portion on one end side is lowered by its own weight while being urged in the upward direction by the torsion spring, and the engaging portion and the restricting portion are moved along the movement path of the protective tube. Located within. Therefore, the torsion spring urges the locking arm in the upward direction when the engaging surface of the engaging portion hits the outer peripheral protruding portion of the protective tube and tries to slide upward from the moving path. Can assist.

According to a third aspect of the protective tube detaching apparatus that solves the above-mentioned problems, in addition to the specific matters of the first or second aspect, the support member includes a screw that is fixed to or removed from the apparatus main body. It is characterized by being fixed in a removable manner .

According to the present invention, the locking arm that temporarily stops the protective tube previously attached to the electric wire in an appropriate posture can be attached to and detached from the apparatus main body according to circumstances such as workability. Therefore, it is possible to prevent the protective pipe from being suspended unnecessarily.

  According to the present invention, even a protection tube having a large leg can be continuously connected while maintaining a proper posture, without requiring an operation of gripping the previous protection tube with another tool or the like. Can be easily connected. In addition, by making the function of temporarily stopping the protective pipe while making the posture of the protective tube detachable from the apparatus main body, it is possible to prevent the work from being hindered when such a function is unnecessary. . Therefore, it is possible to smoothly connect the protective pipes regardless of the size of the legs, and it is possible to realize a protective pipe attaching / detaching device having excellent compatibility.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, the best embodiment of the invention will be described with reference to the drawings. FIGS. 1-10 is a figure which shows one Embodiment of the protective-tube removal | desorption apparatus based on this invention. 1 to 3, 7, and 8 are views showing a detachable main body device for attaching or detaching a protective tube for electric wires, and FIGS. 4 and 5 are attached to a distal end portion where insulation is secured. FIG. 6 is a diagram showing a power device for operating the detachable main body device, and FIGS. 9 and 10 are diagrams showing an example of the protective tube.

  In FIG. 1, the detachable main body device 10 includes a guide 11, a tire 12, a rotating device 13, a roller set 14, an auxiliary arm 15, and a holding device 16. 9 is attached to the electric wire D by sending the protective tube 100 shown in FIG. 9 from the rear end side (right side in FIG. 1) to the front end side (left side in FIG. 1). It can be pulled out to the rear end side and separated from the electric wire D.

  The guide 11 is inserted into the body portion 101 of the protective tube 100 to guide the inner surface of the edge portion 21 and the insertion rod that protrudes from the rear end side of the edge portion 21 and is inserted into the receiving portion 102 of the protective tube 100. 22 and an interruption plate 23 that is inserted between the leg plates 104a and 104b of the leg portion 104 of the protective tube 100 into which the insertion rod 22 is inserted and is expanded. The edge portion 21 is configured to guide the protective tube 100 along the electric wire D when the distal end side is close to the extending position of the electric wire D, and at the same time, the leg portion where the interrupt plate 23 is expanded. The electric wire D is inserted between the leg plates 104a and 104b of the 104 so that the electric wire D is accommodated in the main body 101 and the protective tube 100 is attached. The guide 11 can be attached with the auxiliary guide 25 shown in FIG. 2. The insertion guide 22 and the interrupt plate 23 are extended by the auxiliary guide 25, so that the protective tube 100 can be easily inserted and attached. It can also be made possible.

  The tire 12 is rotatably held so as to be in pressure contact with the edge portion 21 of the guide 11, and is rotated by a rotating device 13. The tire 12 rotates while being deformed, so that the tire 12 moves in close contact so as to grip the protective tube 100 guided by the guide 11, and is attached to the electric wire D (tip direction) or detached direction ( The protective tube 100 is advanced and retracted in the rear end direction). The rotating device 13 includes a joint 27 (described later in detail) that is connected to an operation rod 40 that will be described later, and an umbrella-like shape that changes the direction of the rotation axis so that the tire 12 is rotated by the rotation of the joint 27. A gear train 13a, and receives the rotational force transmitted from the operation rod 40 to drive the tire 12 to rotate.

  The roller set 14 is disposed on the edge portion 21 of the guide 11 closely contacting the tire 12 so that the rotation direction of the outer peripheral surface coincides with the advancing / retreating direction of the protective tube 100 guided by the guide 11 (rotation of the tire 12). The three rollers 31 to 33 are rotatably supported in parallel so as to be continuous in the direction. The roller set 14 is configured to rotate and send out the protective tube 100 to which the tire 12 is pressed and supported by each of the three rollers 31 to 33. As a result, the protective tube 100 is greatly deformed and damaged. It is possible to advance and retreat while preventing this.

  The auxiliary arm 15 rotatably supports the auxiliary roller 15a on the front end side, and guides the protective tube 100 between the auxiliary roller 15a and the front end side of the edge portion 21 of the guide 11. Accordingly, the auxiliary arm 15 prevents the inner surface of the main body 101 from being separated from the edge portion 21 of the guide 11 when the leg portion 104 of the protective tube 100 is expanded.

  As shown in FIG. 3, the holding device 16 is disposed on the opposite side of the guide 11 (opposite position of the guide 11) across the advancing / retreating path of the protective tube 100 and hooks on the electric wire D to position the detachable body device 10 itself. A positioning member 35 to be held, a contact member 36 to be positioned and held with respect to the guide 11 with the electric wire D sandwiched between the positioning member 35, and a joint that is rotated by being connected to an operation rod 40 described later. 37 (which will be described in detail later) and functions to position and hold the electric wire D at the attaching / detaching position of the protective tube 100 guided by the guide 11 and to hold the attaching / detaching main body device 10 in the vicinity of the electric wire D. .

  The positioning member 35 and the abutting member 36 of the holding device 16 are formed at portions where the positioning portion 35a and the abutting portion 36a face each other so as to position and hold the electric wire D, and extend in the facing direction. The groove-shaped portion 35b is formed on the positioning member 35 side and the rib-shaped portion 36b is formed on the contact member 36 side so as to mesh with each other. Thereby, the positioning member 35 and the contact member 36 can be slid in the direction in which the positioning portion 35a and the contact portion 36a are brought close to or away from each other, and the electric wire D can be held and released.

  Further, the positioning member 35 and the abutting member 36 of the holding device 16 are provided with male screws and female screws (not shown) whose screwing directions coincide with the extending directions of the groove-shaped portion 35b and the rib-shaped portion 36b. One of the male screw and the female screw can be relatively rotated in conjunction with a joint 37 that connects an operation rod 40 and the like described later. As a result, the positioning member 35 and the contact member 36 rotate the joint 37 to rotate one of the male screw and the female screw relative to the other, thereby increasing the distance between the positioning portion 35a and the contact portion 36a. Thus, the electric wire D can be positioned and held.

  Further, the holding device 16 is formed with a stopper member 38 and a separation preventing member 39. The stopper member 38 is provided so as to be positioned on the back side when the electric wire D is held with the positioning portion 35a and the contact portion 36a separated from each other, and the stopper member 38 is overrun by stopping when holding the electric wire D. It functions as a guide when restricting and gripping. The separation preventing member 39 is formed by extending the tip of the positioning portion 35a toward the contact portion 36a so as to face the stopper member 38, and the separation interval between the positioning portion 35a and the contact portion 36a is narrowed. By doing so, the electric wire D is prevented from being carelessly detached from the gap. As a result, the detachable body device 10 is sandwiched between narrow members that are out of the position where the electric wire D should be positioned and held (between the positioning portion 35a and the contact portion 36a), and extra work and time are required. It is possible to easily hold the electric wire D while avoiding the above and to prevent the electric wire D from coming off during the operation.

  3 is attached in a curved shape so as to cover the corner portion of the holding device 16, and the sliding plate 34 of the protective tube 100 guided toward the paper surface so as to be attached to the electric wire D. It slides so that corners do not hit and stop. In order to reduce the weight, the sliding plate 34 is appropriately cut out like other members.

  Next, in FIG. 4, the operation rod 40 includes a free rotation shaft 41, a grip portion 42, a coupling rod 43, a distal end side coupling device 44, and proximal end side coupling devices 45 and 46. While gripping the grip part 42 on the end (lower part in FIG. 4) side, a power unit 60 (to be described later) is connected to the base end side coupling device 45 or 46 and the free rotation shaft 41 is rotated, whereby the tip ( The attachment / detachment main body device 10 attached to the tip side coupling device 44 in the upper part in FIG. 4 is operated.

  The operating rod 40 has a base end side of a free rotating shaft 41 rotatably accommodated and supported in a gripping portion 42, and a distal end side of the free rotating shaft 41 is connected to the gripping portion 42 and connected to a shaft. It is rotatably supported by a support portion 47 on the distal end side of the connecting rod 43 parallel to the center. Further, a distal end side umbrella cover 48 and a proximal end side umbrella cover 49 are attached to the free rotating shaft 41 and the connecting rod 43. Thereby, the operating rod 40 is branched to the connecting rod 43 side without a dripping path such as rainwater from the distal end side of the free rotating shaft 41 being continuous to the gripping portion 42 side. The umbrella cover 48 attached to the distal end side of the connecting rod 43 drips moisture from the electric wire D side, and the base position side umbrella cover 49 indicates the limit position where the work can be safely performed. Ensure safety when operating.

  As shown in FIG. 5, the distal end side connecting device 44 moves the distal end portion of the operating rod 40 in the axial direction of the free rotation shaft 41 so as to contact and separate from the joint 27 of the detachable main body device 10 shown in FIG. 1. The joint 27 is formed in a male-female structure that can be attached / detached by inserting or removing the outer sheath 40a at the tip. In the distal end side coupling device 44, an engagement pin 51 is erected on the outer surface (side surface) of the distal end portion exterior 40 a and a hexagonal hole 41 a is formed in the distal end surface of the free rotating shaft 41. As a result, the distal end side coupling device 44 inserts the engagement pin 51 into the engagement groove 27a of the joint 27 that is notched in the insertion direction and opened at the same time as the distal end exterior 40a is inserted into the joint 27. In addition, a hexagonal column 27b erected on the bottom surface of the joint 27 so as to be relatively rotatable can be inserted into and connected to the hexagonal hole 41a. In other words, the distal end side connecting device 44 connects the engagement pin 51 and the free rotating shaft 41 so that the gear train 13a (tire 12) can be rotated forward and backward relative to the joint 27.

  The engagement pin 51 is fixed to the exterior 40 a at the tip of the operation rod 40 and is covered with an exterior cover 51 b that is biased toward the exterior 40 a by a spring 51 a. When it is inserted into the groove 27a, the exterior cover 51b is prevented from retreating and fitting into the large hole portion 27c of the engagement groove 27a, thereby inadvertently coming off the joint 27. The free rotating shaft 41 may have a structure in which the rotating shaft itself is exposed to rotate, or, like the position where the hexagonal hole 41a is formed, an exterior cover may be attached and only the inside may rotate.

  Here, in the joint 27, the engaging groove 27a is also formed at a symmetrical position around the axis of the free rotation shaft 41 (on the back side of the paper surface in FIG. 1), and the operating rod 40 is connected without greatly rotating. Can be attached. Needless to say, the engaging groove 27a may be formed at three or more places, not limited to two places, as long as the strength of the joint 27 can be ensured.

  Similarly, the joint 37 can hook the engagement pin 51 into the bending groove 37b by engaging the engagement pin 51 of the distal end side coupling device 44 with the engagement groove 37a and rotating it forward and backward. In addition, since it only needs to be rotated at the time of the holding operation with the electric wire D of the detachable main body apparatus 10, it is possible to engage with an engaging pin of a separate operating rod not having a rotating function and rotate together with the operating rod. Good.

  Returning to FIG. 4, the proximal-side coupling device 45 is attached in the vicinity of the center of the grip portion 42, and includes a coupling shaft 45 a that is rotated by being coupled with a power device 60 described later. The proximal-side coupling device 46 is attached to the end of the grip portion 42, and includes a coupling shaft 46a that is rotated by a power device 60 described later.

  The connecting shaft 45a of the base end side connecting device 45 is connected to the free rotating shaft 41 via, for example, an umbrella-shaped gear train (not shown) that changes the direction of the rotating shaft. A power device 60 (to be described later) can be attached from the orthogonal direction to rotate the free rotation shaft 41 forward and backward. On the other hand, the connecting shaft 46 a of the base end side connecting device 46 is directly connected to the free rotating shaft 41, and a power device 60 (described later) is attached from the same direction as the operating rod 40 to rotate the free rotating shaft 41 forward and backward. Can be made.

  Next, in FIG. 6, the power unit 60 includes a hydraulic motor main body 61 that is connected to the connecting shafts 45 a and 46 a of the base end side connecting devices 45 and 46, and a hydraulic pressure supply device that generates hydraulic pressure that drives the hydraulic motor main body 61. 62, and a hydraulic hose 63 that forms a hydraulic flow path between the hydraulic motor main body 61 and the hydraulic pressure supply device 62. The power unit 60 supplies the supply hydraulic pressure from the hydraulic supply unit 62 via the forward hose 63a of the hydraulic hose 63, and supplies the return hydraulic pressure from the hydraulic motor main body 61 via the return hose 63b of the hydraulic hose 63. By returning, the hydraulic motor body 61 can be driven by circulating the hydraulic pressure between the hydraulic pressure supply device 62. As a result, the power unit 60 can rotate the free rotation shaft 41 of the operation rod 40 forward and backward, and the rotation of the free rotation shaft 41 is transmitted to the tire 12 via the joint 27 to rotate and remove it. The protective tube 100 can be moved forward and backward by the main body device 10 to be attached to and detached from the electric wire D.

  The hydraulic motor main body 61 is configured to connect the drive rotation shaft 61 a to the connection shafts 45 a and 46 a of the base end side connection devices 45 and 46. The hydraulic motor main body 61 is attached to the operating rod 40 by the holder 61b so as to avoid an unnecessary load from being applied to the connecting portion by an external force.

  The hydraulic pressure supply device 62 is provided with an adjustment lever 62 a for switching the start or interruption of the supply of hydraulic pressure to the hydraulic motor main body 61 and adjusting the hydraulic pressure supplied to the hydraulic motor main body 61, and driving / stopping the hydraulic motor main body 61. In addition, the rotational speed of the hydraulic motor main body 61 can be freely adjusted and can be remotely operated from a position via the hydraulic hose 63.

  The hydraulic hose 63 has a length that allows the operator to install the hydraulic supply device 62 away from the operation rod 40 in, for example, a bucket on which an operator is boarded, and the load applied to the operation rod 40 is reduced. Only a lightweight hydraulic motor main body 61 can be provided with a simple configuration.

Then, as shown in FIG. 7A, the detachable main body device 10 of the protective tube detaching device has its electric wire on the tip side of the guide 11 (near the positioning member 35 of the holding device 16 that positions and holds the electric wire D). it is possible to attach and detach the locking arm 7 0 to suspend delivery of the protective tube 200 attached to the D. The locking arm 70 is pivotally supported at its one end by a columnar support member 71 detachably fixed to the holding device 16 by a thumbscrew 71a and a shaft 71b provided on the head of the support member 71. The arm main body 72, and the head portion 73 that is integrally formed with the other end of the arm main body 72 and engages the receiving portion 202 of the protective tube 200 shown in FIG.

  The support member 71 includes a torsion spring (not shown) mounted on the head shaft 71b and biases the arm main body 72 in the upward direction. The torsion spring of the support member 71 receives the load on the arm main body 72. In response, while allowing the electric wire D to descend to a position where the electric wire D passes through the inside of the head portion 73 described later, the arm body 72 is rotated upward to assist the force of raising the head portion 73.

As shown in FIG. 7B, the head portion 73 is formed by integrally forming a circular portion 75 and a continuous portion 76 on the arm main body 72. The circular portion 75 is formed in a substantially semicircular shape having a larger diameter than the main body portion 201 of the protective tube 200 and simultaneously having a smaller diameter than the receiving portion 202. For this reason, the circular portion 75 allows the main body portion 201 of the protective tube 200 to enter the internal space 75a and enter the interior state, while restricting the main body portion 201 in the interior state from swinging in the left-right direction. Even if the receiving portion 202 of the protective tube 200 tries to enter the internal space 75a, the peripheral corner portion (outer peripheral protruding portion) 205 of the receiving portion 202 hits and collides with the wall surface 75b. The continuous portion 76 connects the circular portion 75 to the arm main body 72 and includes an internal space 76 a continuous to the internal space 75 a of the circular portion 75. The connecting portion 76 allows the circular portion 75 to allow the leg portion 204 of the protective tube 200 in the interior state to enter the internal space 76a, while allowing the leg portion 204 to swing such as rotating in the left-right direction. Restrict. That is, the circular portion 75 constitutes an engaging portion in which the wall surface 75 b abuts against and engages with the peripheral corner portion 205 of the protective tube 200. Further, the connecting portion 76 constitutes a restricting portion that restricts rotation with the leg portion 204 of the protective tube 200 in the interior state.

As a result, as shown in FIG. 8, when the head portion 73 includes the protective tube 200 sent by the tire 12 of the detachable main body device 10, the continuous portion 76 limits the free rotation of the leg portion 204. Thus, the posture of the protective tube 200 is properly maintained. On the other hand, the circular portion 75 restricts the body portion 201 of the protective tube 200 from separating in the left-right direction, and the wall surface 75b stops (engages / locks) the peripheral corner portion 205 of the receiving portion 202 on the rear side. ) To pause. In this state, when the protective tube 200 to be attached to the electric wire D is moved by the tire 12 of the detachable main body device 10 next, the protective tube is in a state where the leg portion 204 is upright (a state that matches the posture guided by the guide 11). The insertion part 203 can be inserted into the receiving part 202 of the 200, and the front and rear protection pipes 200 can be connected to each other without obstructing the front and rear leg parts 204 even if the posture of the previous protection pipe 200 is not maintained. Can be linked.

The head portion 73 is formed on an inclined surface so that the wall surface 75b of the circular portion 75 is positioned in the direction in which the protective tube 200 is sent out downward, and the wall surface 75b of the circular portion 75 rotates the arm body 72. The separation distance from the shaft (rotation fulcrum) 71b of the support member 71 that freely supports the shaft is longer in the lower portion on the rear end side than the upper portion on the front end side in the rotation direction in which the protective tube 200 is separated from the movement path. It has become. For this reason, when the wall surface 75b of the circular part 75 is pressed with a strong force , the head part 73 is designed to slide upwards and escape upward. That is, the wall surface 75b of the circular portion 75 constitutes an engaging surface of the engaging portion.

As a result , as described above , the insertion portion 201 of the next protective tube 200 is inserted into the receiving portion 202 of the protective tube 200 that the head portion 73 of the locking arm 70 stops and temporarily stops the peripheral corner portion 205. after ligated by allowed inserted further, its the next protective tube 200 is Ru fed out by the tire 12 of the desorption main unit 10, the wall surface 75b of the head portion 73 of the locking arm 70 is protective tube 200 beyond It is pushed by the peripheral corner portion 205. Then, the wall surface 75b of the circular portion 75 of the head portion 73 of the locking arm 70 is formed on a slope inclined so as to be positioned in the feeding direction of the protective tube 200 toward the lower side. When it is pushed by the slid, it tries to slide upward with respect to the peripheral corner portion 205 from the state where the peripheral corner portion 205 stops. At the same time, the arm main body 72 of the locking arm 70 is assisted by a slight upward upward movement by the urging force of the torsion spring of the support member 71. As a result, the locking arm 70 releases the temporary stop after the succeeding protective tube 200 is connected to the temporarily stopped protective tube 200, and causes the head portion 73 to leave the movement path of the protective tube 200. The protective tube 200 can be connected continuously.

  Needless to say, the locking arm 70 may be attached to the detachable main body device 10 when the protective tube 100 is attached to the electric wire D. Similarly, the locking arm 70 is continuously stopped while the protective tube 100 is temporarily stopped. Can be connected.

  As described above, in this embodiment, the head portion 73 of the locking arm 70 can temporarily stop the receiving portion 202 of the protective tube 200 while keeping the posture of the leg portion 204, and in this state, the guide 11 is inserted into the receiving portion 202 of the previous protective tube 200, so that the protective tubes 200 can be connected to each other. When the next protective tube 200 is further sent out, the head portion 73 escapes and the temporary stop is released, so that the next connecting operation can be continued. Further, the locking arm 70 can be attached to and detached from the detachable main body device 10 as necessary, and does not get in the way. Therefore, when the protective tube 200 having a large leg 204 is attached / detached, the locking arm 70 can be attached and the protective tube 200 can be easily connected / released.

  Although one embodiment of the present invention has been described so far, it is needless to say that the present invention is not limited to the above-described embodiment, and may be implemented in various forms within the scope of the technical idea.

It is a figure which shows one Embodiment of the protection pipe desorption apparatus which concerns on this invention, and is a top view which shows the schematic whole structure of the desorption main body apparatus. It is a top view which shows the auxiliary | assistant guide which can be attached or detached to the attachment or detachment main body apparatus of the protective tube removal | desorption apparatus. It is the elevation view seen from the rear end side which shows the principal part structure of the desorption main body apparatus of the protective tube desorption apparatus. It is a top view which shows the operating rod of the protection tube removal | desorption apparatus. It is a figure which shows the front-end | tip part of the operation rod, (a) is the top view seen from the extension direction outer side, (b) is the partial longitudinal cross-sectional view which expanded the front-end | tip part. It is a top view which shows the motive power apparatus of the protection tube removal | desorption apparatus. It is a top view which shows the latching member which can be attached or detached to the attachment or detachment main body apparatus of the protection tube removal | desorption apparatus. It is a state diagram showing the operation. It is a figure which shows the protective tube attached / detached to an electric wire with the protective tube removal | desorption apparatus, (a) is the top view, (b) is the AA sectional drawing. It is a figure which shows the protection pipe | tube different from FIG. 9, (a) is the top view, (b) is the AA sectional drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Desorption main body apparatus 11 Guide 12 Tire 13 Rotating apparatus 14 Roller set 15 Auxiliary arm 16 Holding apparatus 21 Edge part 22 Insertion bar 23 Interrupting plates 31-33 Roller 40 Operation bar 41 Free rotating shaft 42 Grasping part 43 Connecting rod 60 Power Device 61 Hydraulic motor main body 62 Hydraulic supply device 63 Hydraulic hose 70 Locking arm 71 Support member 72 Arm main body 73 Head portion 75 Circular portion 75b Wall surface 76 Connecting portion 100, 200 Protective pipe 101, 201 Main body portion 102, 202 Receiving portion 103 , 203 Insertion part 104, 204 Leg part 104a, 104b, 204a, 204b Leg plate

Claims (3)

A protective pipe detaching device that inserts a guide between the leg portions of the protective pipe and moves the outer peripheral protrusion on the rear end side of the protective pipe while positioning it on the guide side to attach the protective pipe to the electric wire. And
The main body part of the protective tube that has been removed from the guide and is sent to the electric wire side, and the engaging part that engages by engaging with the outer peripheral protruding part, and the protection that the engaging part engages with the outer peripheral protruding part A restriction part that restricts the rotation of the protective pipe with the tube leg in an interior state, an arm main body having an engagement part and a restriction part on one end side, and the other end side of the arm main body are rotatably supported And a support member that allows the engaging portion and the restricting portion on one end side to move between the movement path of the protective pipe and the outside of the movement path, and a guide that the locking arm includes to feed the protective pipe to the electric wire side. It is attached to the tip side of
The engaging surface of the engaging portion that abuts and engages with the outer peripheral protruding portion of the protective tube has a rotational direction in which the separation distance from the rotational fulcrum on the other end side of the arm body is separated from the movement path of the protective tube. A protective tube detaching device, wherein the protective tube detaching device is formed on a slope inclined so as to be longer toward the rear end side than to the front end side . The arm body is supported by a support member so as to disengage the engaging portion and the restricting portion from the movement path of the protective tube by rotating upward.
The support member urges the arm body in the upward rotation direction, and is set to an urging force enough to lower the engaging portion and the restricting portion into the movement path of the protective tube by its own weight on the arm body side. The protective tube attaching / detaching device according to claim 1 , further comprising a torsion spring that is provided . The protective tube detachment apparatus according to claim 1 or 2, wherein the support member is provided with a screw to be fixed to or removed from the apparatus main body, and is detachably fixed to the apparatus main body .

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