JP2015188989A - Cable storage tube cutting device and cable storage tube cutting method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to easily cut a cable storage tube and further to prevent a stored cable from being damaged.SOLUTION: A cable storage tube cutting device includes: a sleeve unit which is so assembled in a cable storage pipe as to surround a cable; a rotary ring unit which is rotatably provided along an outer peripheral surface of the sleeve unit; a stationery ring unit which is fixed to the sleeve unit and has an annular form; a cutting blade which is attached to the rotary ring unit; and a cutting blade mover mechanism which moves the cutting blade outwards in a radial direction, and further has: a cutting unit 27 which is rotated in association with rotation of the rotary ring unit and cuts the cable storage tube in a circumferential direction; and a drive unit 29 which rotates the rotary ring unit. It is unnecessary to provide the cable storage tube cutting device outside the cable storage tube.

Description

  The present invention relates to a cable housing tube cutting device and a cable housing tube cutting method.

  Conventionally, when laying cables such as power cables and communication cables, cables are usually used so that they are not damaged by heavy loads such as vehicles, or when excavator touches during excavation work. It is housed in a cable housing tube and buried in the ground.

  By the way, when power demand, communication demand, etc. change, it is necessary to change or branch the existing cable laying route. In that case, the cable housing pipe is cut at a predetermined location, and the stored cable After exposing the cable, the cable is cut or connected to another cable.

  For this purpose, the operator first excavates the soil around the cable housing tube to expose the cable housing tube, and then uses a ratchet-type cutting machine according to the material of the cable housing tube. The sleeve is cut in the circumferential direction at two locations at a predetermined distance in the axial direction to form a sleeve having a predetermined length, and then the sleeve is cut in the axial direction at two locations in the circumferential direction. By doing so, the halved state is removed.

  However, in order to operate the cutting machine, it is necessary to secure a working space of at least 35 [mm] or more. Usually, a plurality of cable housing pipes are embedded in the ground in close proximity. It is difficult to secure a working space of 35 mm or more between the cable housing tube to be tried and the adjacent cable housing tube.

  In order to secure the work space, it is conceivable to excavate the soil around each cable housing pipe on a large scale and move the adjacent cable housing pipe. The cost for changing the laying route or branching becomes high.

  In view of this, there has been provided a tube cutter as a cable housing tube cutting device capable of cutting the cable housing tube from the inner peripheral surface side of the cable housing tube (see, for example, Patent Document 1).

  In the tube cutter, for example, a rotating body is inserted into the cable housing tube from the end (opening) of the cable housing tube in a manhole or the like, and a cutting blade attached to the tip of the rotating body is inserted into the cable housing tube. The rotating body is rotated while being in contact with the peripheral surface.

  In this case, since the cable housing tube is cut from the inner peripheral surface side, it is not necessary to secure a work space around the cable housing tube.

JP 2006-130583 A

  However, in the conventional tube cutter, since it is necessary to insert a rotating body into the cable housing tube from the end of the cable housing tube, the cable housing tube is cut at a location away from the end of the cable housing tube. I can't.

  Further, since the gap between the cable and the inner peripheral surface of the cable housing tube varies depending on the type of cable, the outer diameter of the cable, the cable arrangement in the cable housing tube, etc., the cutting blade is rotated when the rotating body is rotated. Therefore, it is necessary to carefully operate the tube cutter so as not to damage the cable, and the work for cutting is troublesome.

  The present invention solves the problems of the conventional tube cutter, and can easily cut the cable housing tube even when the work space is small, and does not damage the accommodated cable. An object of the present invention is to provide a storage tube cutting device and a cable storage tube cutting method.

  The cable housing tube cutting device of the present invention is used to cut a cable housing tube in which a cable is housed.

  A sleeve unit that surrounds and assembles the cable in the cable housing tube and forms a cylindrical body having a cylindrical shape; and wraps and assembles the sleeve unit in the cable housing tube. A rotating ring unit that forms an annular body that is rotatably disposed along the outer peripheral surface, and an annular body that is assembled to surround the sleeve unit in the cable housing tube and is fixed to the sleeve unit. A fixed ring unit, a cutting blade attached to the rotating ring unit and formed to protrude radially outward, and a cutting blade moving mechanism for moving the cutting blade radially outward; The cable receiving tube is rotated in accordance with the rotation of the rotating ring unit, and the cable receiving tube is cut in the circumferential direction. The cross-sectional unit, connected to a drive source, transmits the rotation of the driving source to the rotary ring unit, and a drive unit for rotating the rotary ring unit.

  According to the present invention, the cable housing tube cutting device is used for cutting a cable housing tube in which a cable is housed.

  A sleeve unit that surrounds and assembles the cable in the cable housing tube and forms a cylindrical body having a cylindrical shape; and wraps and assembles the sleeve unit in the cable housing tube. A rotating ring unit that forms an annular body that is rotatably disposed along the outer peripheral surface, and an annular body that is assembled to surround the sleeve unit in the cable housing tube and is fixed to the sleeve unit. A fixed ring unit, a cutting blade attached to the rotating ring unit and formed to protrude radially outward, and a cutting blade moving mechanism for moving the cutting blade radially outward; The cable receiving tube is rotated in accordance with the rotation of the rotating ring unit and cuts the cable receiving tube in the circumferential direction. The cross-sectional unit, connected to a drive source, transmits the rotation of the driving source to the rotary ring unit, and a drive unit for rotating the rotary ring unit.

  In this case, when the drive unit transmits the rotation of the drive source disposed outside the cable housing tube to the rotary ring unit, the rotary ring unit is rotated along the outer peripheral surface of the sleeve unit. The cutting unit is rotated, and the inner peripheral surface of the cable housing tube is cut in the circumferential direction by the cutting blade.

  Therefore, since it is not necessary to attach the cable housing tube cutting device to the outside of the cable housing tube, the cable housing tube can be cut only by securing a small working space around the cable housing tube to be cut.

  Moreover, since it is not necessary to insert a cutting unit into the cable housing tube from the end of the cable housing tube, the cable housing tube can be cut even at a location away from the end of the cable housing tube.

  Furthermore, even if the gap between the cable and the inner peripheral surface of the cable housing tube is different depending on the type of cable, the outer diameter of the cable, the arrangement state of the cable in the cable housing tube, etc., the cable is surrounded by the sleeve unit. The cable housing tube can be easily cut without damaging the cable with the cutting blade. Therefore, the work for cutting the cable housing tube can be simplified.

  Further, since the fixing ring unit is assembled in the cable housing tube to form an annular body, it is possible to prevent the cable housing tube from becoming flat. Therefore, since the inner peripheral surface of the cable housing tube can be cut with a constant force by the cutting blade, the construction quality can be improved.

It is a perspective view of the cable accommodation pipe cutting device in an embodiment of the invention. It is a longitudinal section showing the state where the cable accommodation pipe cutting device in an embodiment of the invention was assembled in the cable accommodation pipe. It is a cross-sectional view showing the state which assembled | attached the cable housing pipe cutting device in embodiment of this invention in the cable housing pipe. It is a perspective view showing the state which assembled | attached the cable accommodation pipe cutting device in embodiment of this invention in the cable accommodation pipe. It is a disassembled perspective view of the cable accommodation pipe cutting device in an embodiment of the invention. It is a perspective view of the inner sleeve in embodiment of this invention. It is a perspective view of the 1st outer guide in an embodiment of the invention. It is a perspective view of the 2nd outer guide in an embodiment of the invention. It is a perspective view of a cutting ring unit and a cutting unit in an embodiment of the invention. It is a perspective view of the cutting unit in an embodiment of the invention. It is the 1st perspective view which looked at the cutting unit in an embodiment of the invention from the back side. It is the 2nd perspective view which looked at the cutting unit in an embodiment of the invention from the back side. It is a side view of the cutting unit in an embodiment of the invention. It is a 1st figure for demonstrating operation | movement of the cutting blade moving mechanism in embodiment of this invention. It is a 2nd figure for demonstrating operation | movement of the cutting blade moving mechanism in embodiment of this invention. It is a perspective view of the drive unit in an embodiment of the invention. It is a side view of the drive unit in an embodiment of the invention. It is a 1st figure for demonstrating the operation | movement procedure at the time of assembling | attaching the cable housing pipe cutting device in embodiment of this invention to a cable housing pipe. It is a 2nd figure for demonstrating the operation | movement procedure at the time of assembling | attaching the cable housing pipe cutting device in embodiment of this invention to a cable housing pipe. It is a 3rd figure for demonstrating the operation | movement procedure at the time of assembling | attaching the cable housing pipe cutting device in embodiment of this invention to a cable housing pipe. It is a 4th figure for demonstrating the operation | movement procedure at the time of assembling the cable housing pipe cutting device in embodiment of this invention to a cable housing pipe. It is a 5th figure for demonstrating the operation | movement procedure at the time of assembling the cable housing pipe cutting device in embodiment of this invention to a cable housing pipe. It is a 6th figure for demonstrating the operation | movement procedure at the time of assembling | attaching the cable housing pipe cutting device in embodiment of this invention to a cable housing pipe. It is a 7th figure for demonstrating the operation | movement procedure at the time of assembling the cable housing pipe cutting device in embodiment of this invention to a cable housing pipe.

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

  1 is a perspective view of a cable housing tube cutting device according to an embodiment of the present invention. FIG. 2 is a longitudinal sectional view showing a state in which the cable housing tube cutting device according to the embodiment of the present invention is assembled in a cable housing tube. FIG. 4 is a transverse sectional view showing a state in which the cable housing tube cutting device in the embodiment of the present invention is assembled in the cable housing tube, and FIG. 4 is a state in which the cable housing tube cutting device in the embodiment of the present invention is assembled in the cable housing tube. FIG. 5 is an exploded perspective view of the cable housing tube cutting device according to the embodiment of the present invention.

  In the figure, 11 is a cable housing tube, and 12 is a cable such as a power cable or a communication cable housed in the cable housing tube 11. Normally, a plurality of cables 12 are accommodated in the cable accommodating tube 11, and in the present embodiment, three cables 12 are accommodated. In addition, each cable 12 is accommodated in the cable accommodating tube 11 in a wound state as necessary.

  Reference numeral 21 denotes a cable housing tube cutting device for cutting the cable housing tube 11 from the inner peripheral surface side. The cable housing tube cutting device 21 surrounds and assembles each cable 12 in the cable housing tube 11. The inner sleeve 22 as a sleeve unit having a cylindrical shape, the inner sleeve 22 is surrounded and fixed to the inner sleeve 22 at both ends of the inner sleeve 22, and has a ring shape. A pair of first and second outer guides 23 and 24 as a fixing ring unit, the inner sleeve 22 is surrounded, and the outer sleeve 22 is rotatable along the outer circumferential surface of the inner sleeve 22 in the circumferential direction of the inner sleeve 22. The cutting ring unit 26 as a rotating ring unit that is slidably disposed and has a ring shape, A cutting unit 27 that is attached to a predetermined portion in the circumferential direction of the cutting ring unit 26, is rotated along with the rotation of the cutting ring unit 26, and cuts the cable housing tube 11 in the circumferential direction from the inner peripheral surface side; A drive unit 29 is connected to a drive source (not shown) such as an electric tool disposed outside the cable housing tube 11, transmits the rotation of the drive source to the cutting ring unit 26, and rotates the cutting ring unit 26. A radial face gear 25 as a rotation transmission element on the driven side is formed on the end surface of the cutting ring unit 26 facing the first outer guide 23.

  A cutting blade 28 for cutting is attached to the outer peripheral surface of the cutting unit 27 so as to protrude outward in the radial direction. Further, a connecting shaft sh1 is formed on the outer peripheral surface of the drive unit 29 so as to protrude outward in the radial direction, and the connecting shaft sh1 is connected to the output shaft of the drive source and rotated from the drive source. To be rotated. A rotation transmission shaft sh2 is formed on the inner peripheral surface of the drive unit 29 so as to protrude radially inward, and a bevel gear serving as a rotation transmission element on the drive side is formed at the tip of the rotation transmission shaft sh2. 30 is attached, and the bevel gear 30 and the face gear 25 are engaged with each other.

  In the present embodiment, a predetermined portion of the cable housing tube 11, the top of the tube has a rectangular shape by a predetermined cutting device, and the dimension of the cable housing tube 11 in the axial direction is about 20 cm. An opening 31 having a circumferential dimension of about 10 cm is formed, and the inner sleeve 22, the first and second outer guides 23 and 24, and the cutting ring unit are formed through the opening 31. 26 is inserted into the cable housing tube 11, the cutting unit 27 is attached to the cutting ring unit 26, and the drive unit 29 is stretched between the two inner peripheral edges eg 1 and eg 2 extending in the axial direction of the opening 31. Thus, the cable housing pipe cutting device 21 is assembled to the cable housing pipe 11. In the present embodiment, the opening 31 is formed at the top of the cable housing tube 11, but another cable housing is buried adjacent to the top of the cable housing tube 11. If it is, it can be formed at a location other than the top of the tube where the cutting device can be used.

  Next, the inner sleeve 22, the first and second outer guides 23 and 24, the cutting ring unit 26, the cutting unit 27, and the drive unit 29 will be described.

  FIG. 6 is a perspective view of the inner sleeve in the embodiment of the present invention, FIG. 7 is a perspective view of the first outer guide in the embodiment of the present invention, and FIG. 8 is a second outer guide in the embodiment of the present invention. FIG. 9 is a perspective view of the cutting ring unit and the cutting unit in the embodiment of the present invention, FIG. 10 is a perspective view of the cutting unit in the embodiment of the present invention, and FIG. 11 is in the embodiment of the present invention. FIG. 12 is a second perspective view of the cutting unit viewed from the back side, and FIG. 13 is a side view of the cutting unit according to the embodiment of the present invention. FIG. 14 is a first diagram for explaining the operation of the cutting blade moving mechanism in the embodiment of the present invention, and FIG. 15 is a first diagram for explaining the operation of the cutting blade moving mechanism in the embodiment of the present invention. 2 FIG, 16 is a perspective view of the drive unit in the embodiment of the present invention, FIG 17 is a side view of a drive unit in the embodiment of the present invention.

  First, the inner sleeve 22 will be described.

  The inner sleeve 22 is assembled so as to surround each cable 12 in the cable housing tube 11 (FIG. 2), and when the cable housing tube 11 is cut by rotating the cutting ring unit 26 and the cutting unit 27, the cable 12. Protects the cable 12 from being damaged. For this purpose, the inner sleeve 22 includes a plurality of segments SLi (i = 1, 2,..., 4) which are connected to each other in a swingable manner and have an arc shape. Then, it is inserted into the cable housing tube 11 through the opening 31 in a state of extending in a band shape, and the cables 12 are surrounded and assembled in the cable housing tube 11 to form a cylindrical body. Each segment SLi is formed at an angle of 90 ° in the circumferential direction of the inner sleeve 22.

  In the present embodiment, the inner sleeve 22 is formed by four segments SLi. The number of segments depends on the gap between the cable housing tube 11 and the cable 12, the size of the opening 31, and the like. Can be changed.

  Each segment SLi is formed by projecting radially outward in the vicinity of both ends in the length direction of the main body 41 (the axial direction of the inner sleeve 22) of the main body 41 having an arc shape. A protrusion 42 having an arc shape is provided. When the inner sleeve 22 is assembled in the cable housing tube 11, the protrusions 42 are connected to form an annular protrusion 45 as a guide member.

  The projections 42 are connected by pins 43 between the segments SL1 and SL2, between the segments SL2 and SL3, and between the segments SL3 and SL4. The segments SL4 and SL1 are not connected to each other, and the end portions of the segments SL4 and SL1 are brought into contact with each other. Then, by attaching the first and second outer guides 23 and 24 to the outer peripheral surface of the inner sleeve 22, the contact state of the end portions of the segments SL4 and SL1 is maintained, and the inner sleeve 22 has a cylindrical shape. maintain.

  As the cutting unit 27 rotates, the cutting blade 28 is moved radially outward to a predetermined segment of the segment SLi, in the present embodiment, a predetermined position on the outer peripheral surface of the segment SL1. A cylindrical pin 48 serving as a locking member is formed so as to protrude.

  In addition, when the inner sleeve 22 rotates together with the rotation of the cutting ring unit 26 and the cutting unit 27, the position of the pin 48 with respect to the cutting unit 27 is shifted, and the cutting blade 28 is moved accurately outward in the radial direction. It becomes impossible to do. Therefore, in the present embodiment, the inner sleeve 22 is straddled between the inner peripheral edges eg1 and eg2 (FIG. 4) and connected to a drive unit 29 fixed to the cable housing tube 11 by a bolt (not shown). I am doing so. For this purpose, holes to be screwed with the bolts are formed at predetermined positions of the drive unit 29 and the inner sleeve 22.

  Next, the first and second outer guides 23 and 24 will be described.

  The first and second outer guides 23 and 24 are attached so as to surround the inner sleeve 22 at both ends of the inner sleeve 22 in the cable housing tube 11, and the outer peripheral surface of the inner sleeve 22 and the cable housing tube 11. An annular space for rotating the cutting ring unit 26 and the cutting unit 27 is formed between the inner circumferential surface and the inner circumferential surface.

  In the present embodiment, each of the first and second outer guides 23 and 24 is swingably connected to each other, and in the present embodiment, there are six segments GDj (j = 1, 2, ..., 6), and in the state of being extended in a band shape, in the cable housing tube 11 (the gap between the outer peripheral surface of the inner sleeve 22 and the inner peripheral surface of the cable housing tube 11) through the opening 31 (FIG. 2). The inner sleeve 22 is inserted and inserted into the cable housing tube 11 to form an annular body. Therefore, each segment GDj is formed to form an angle of 60 ° in the circumferential direction of the first and second outer guides 23 and 24.

  Further, the thickness (diameter dimension) of each segment GDj is set so that the first and second outer guides 23 and 24 can be inserted into the cable housing tube 11 and the outer peripheral surface of the inner sleeve 22 and the cable. It is made slightly smaller than the gap with the inner peripheral surface of the containing tube 11.

  In the present embodiment, the first and second outer guides 23 and 24 are formed by six segments GDj, but the gap between the cable housing tube 11 and the inner sleeve 22, the opening portion The number of segments can be changed according to the size of 31 or the like.

  A groove 52 having an arc shape is formed on the inner peripheral surface of each segment GDj. When the first and second outer guides 23 and 24 are assembled in the cable housing tube 11, the grooves 52 are connected to each other. Thus, an annular groove 55 as a guided portion is formed.

  Then, when the first and second outer guides 23, 24 are inserted into the cable housing tube 11 in a state of being extended in a band shape, the annular protrusion 45 is caused to enter the annular groove 55, and each segment GDj is Guided. The annular protrusion 45 also functions as a positioning member, positions the first and second outer guides 23 and 24 with respect to the inner sleeve 22, and the first and second outer guides 23 in the cable housing tube 11. , 24 is restricted from moving in the axial direction.

  The segments GD1 and GD2, the segments GD2 and GD3, the segments GD3 and GD4, the segments GD4 and GD5, and the segments GD5 and GD6 are connected by pins 51. The segments GD6 and GD1 are not connected to each other, and the end portions of the segments GD6 and GD1 are brought into contact with each other. When the first and second outer guides 23 and 24 are inserted into the cable housing tube 11, the outer peripheral surfaces of the first and second outer guides 23 and 24 come into contact with the inner peripheral surface of the cable housing tube 11. Therefore, the contact state of each end of the segments GD6 and GD1 is maintained, and the first and second outer guides 23 and 24 maintain an annular shape. Further, since the outer peripheral surfaces of the first and second outer guides 23 and 24 abut on the inner peripheral surface of the cable housing tube 11, the cable housing tube 11 is prevented from being flattened, and the circular shape is maintained. The

  Next, the cutting ring unit 26 will be described.

  The cutting ring unit 26 includes a plurality of segments RGk (k = 1, 2,..., 4) which are connected to each other in a swingable manner and have an arc shape in the present embodiment. In this state, the cable is inserted into the cable housing tube 11 through the opening 31, and the inner sleeve 22 is surrounded in the cable housing tube 11 and assembled into a cylindrical shape.

  In the present embodiment, one of the segments RGk, the cutting unit 27 is attached to the segment RG1. Therefore, the segment RG1 is formed so as to form a predetermined angle larger than 90 [°], for example, 120 [°] in the circumferential direction of the cutting ring unit 26, and each segment RG2 to RG4 is 80 [ It is formed to form an angle of [°]. In the axial direction of the cutting ring unit 26, the segment RG1 is shorter than the segments RG2 to RG4, and a notch for attaching the cutting unit 27 is formed.

  In the present embodiment, since the angle formed by each segment RGk of the cutting ring unit 26 and the angle formed by each segment SLi of the inner sleeve 22 are different in the circumferential direction, the connecting portion of each segment RGk and each segment The connecting portion of SLi does not coincide with the circumferential direction. Therefore, it is possible to prevent each segment RGk and each segment SLi from biting. The thickness of each segment RGk is such that the cutting ring unit 26 can be inserted into the cable housing tube 11 and can be rotated with respect to the inner sleeve 22 in the cable housing tube 11. The (diameter dimension) is slightly smaller than the gap between the outer peripheral surface of the inner sleeve 22 and the inner peripheral surface of the cable housing tube 11.

  In the present embodiment, the cutting ring unit 26 is formed by four segments RGk. However, depending on the gap between the cable housing tube 11 and the inner sleeve 22, the size of the opening 31, and the like. The number of segments can be changed accordingly.

  A plurality of teeth 61 are formed radially and at a predetermined pitch on one end face of each segment RGk, that is, the end face facing the first outer guide 23 in the present embodiment. When 26 is assembled in the cable housing tube 11, the face gear 25 is formed by the teeth 61.

  The segments RG1 and RG2, the segments RG2 and RG3, the segments RG3 and RG4, and the segments RG4 and RG1 are connected by pins (not shown).

  Next, the cutting unit 27 will be described.

  The cutting unit 27 includes a pair of side walls 64, 65 arranged in parallel with each other at a predetermined interval, and one end side of each side wall 64, 65, in this embodiment, on the side of the segment RG4, the side wall 64. , 65, and a unit main body 66 that is movably disposed with respect to the side walls 64, 65 in the circumferential direction of the cutting ring unit 26, the other end of each of the side walls 64, 65, in the present embodiment. , A connecting pin 67 as a connecting member for connecting the end portion on the segment RG2 side, and swingable about the shaft sh3 disposed in the vicinity of the connecting pin 67 and extending toward the segment RG4 side The cutting blade 2 is rotated in accordance with the rotation of the first arm portion 69, the cutting blade 28 attached to the tip of the first arm portion 69, the cutting ring unit 26, and the cutting unit 27. The move radially outward of the cutting ring unit 26 comprises a cutting blade moving mechanism 75 and the like.

  The cutting blade moving mechanism 75 includes a rotary shaft sh4 that passes through the unit main body 66 and is rotatably supported by the unit main body 66 at the end of the unit main body 66 on the segment RG4 side, and the cutting unit. As a rotating body that is attached to the tip (lower end) of the rotation shaft sh4 on the back side of the rotation shaft 27 and is rotated along with the rotation of the cutting unit 27 along the outer peripheral surface of the inner sleeve 22, and a rotation detection unit The movable piece 77 as a movable member that is moved upward (in the direction approaching the gear 76) with the rotation of the rotary shaft sh4, and the swing piece sh5 with respect to the movable piece 77 as a center. And a pair of second and third arm portions 81, 82, etc. disposed so as to extend toward the segment RG2 side, the first arm portion 9 and the second, and the third arm portion 81, is swingably connected around a pivot shaft SH6. The rotation shaft sh4, the movable piece 77, and the second and third arm portions 81 and 82 constitute a movement direction conversion section that converts the rotation movement of the gear 76 into the straight movement of the cutting blade 28.

  The gear 76 includes six teeth as locked members formed at equal pitches in the circumferential direction, and each time the cutting ring unit 26 is rotated once on the inner sleeve 22, one tooth is a pin. 48 (FIG. 6) and is rotated 60 [°]. When the rotation shaft sh4 is rotated along with the rotation of the gear 76, the movable piece 77 is moved on the rotation shaft sh4 in a direction approaching the gear 76 by the amount of rotation of the rotation shaft sh4. 15, the first arm portion 69 and the second and third arm portions 81 and 82 are rotated, and the cutting blade 28 is moved outward in the radial direction of the cable housing tube 11. It is done.

  Accordingly, since the cutting blade 28 is moved radially outward of the cable housing tube 11 by the amount of rotation of the cutting ring unit 26 and the cutting unit 27, the inner peripheral surface of the cable housing tube 11 is made constant by the cutting blade 28. It is possible to cut with a stable force. As a result, the cable housing tube 11 is not cut rapidly, so that the cut surface of the cable housing tube 11 can be improved and the construction quality can be improved.

  In the present embodiment, a cylindrical pin 48 is used as a locking member. However, instead of the pin 48, a protrusion of another shape, for example, a plate-shaped locking piece is used. A protrusion formed at the tip can be used.

  Next, the drive unit 29 will be described.

  The drive unit 29 has a main body 32 and a main body 32 in the circumferential direction of the cable housing tube 11 on one end side (inner peripheral edge eg2 side) of the main body 32 facing the first outer guide 23. 32, a plate-like adjusting portion 33 that is movably disposed with respect to 32, and a groove m1 for engaging with the inner peripheral edge eg1 in the main body portion 32 causes the adjusting portion 33 to engage with the inner peripheral edge eg2. The grooves m2 are formed obliquely downward.

  Further, a pin 34 as a locking member is formed at a predetermined position of the main body 32, a long groove 35 is formed in the adjusting portion 33, and the pin 34 is movably disposed in the long groove 35. Is done. Therefore, the drive unit 29 can be assembled to the cable housing tube 11 by moving the adjustment portion 33 relative to the main body portion 32 in accordance with the dimension of the opening portion 31 in the circumferential direction.

  As described above, a connecting shaft sh1 is formed on the outer peripheral surface of the drive unit 29 so as to protrude radially outward, and the connecting shaft sh1 is connected to the output shaft of the drive source. Rotated in response to rotation from the drive source. A rotation transmission shaft sh2 is formed on the inner peripheral surface of the drive unit 29 so as to protrude radially inward, and a bevel gear 30 is attached to the tip of the rotation transmission shaft sh2. And the face gear 25 are engaged with each other.

  Therefore, when the drive source is driven and the connecting shaft sh1 and the rotation transmission shaft sh2 are rotated, the bevel gear 30 is rotated, the face gear 25 is rotated, and the cutting ring unit 26 and the cutting unit 27 are connected to the inner sleeve. 22 to rotate.

  When the cutting ring unit 26 is rotated on the inner sleeve 22, the gear 76 and the rotation shaft sh4 are rotated, and the movable piece 77 is moved on the rotation shaft sh4. The cable housing tube 11 is moved outward in the radial direction, and the cable housing tube 11 is cut from the inner peripheral surface side.

  Next, an operation procedure when the cable housing tube cutting device 21 is assembled to the cable housing tube 11 will be described.

  FIG. 18 is a first view for explaining a work procedure when the cable housing tube cutting device according to the embodiment of the present invention is assembled to the cable housing tube, and FIG. 19 is a cable housing tube cutting device according to the embodiment of the present invention. FIG. 20 is a second diagram for explaining the work procedure when assembling the cable housing tube to the cable housing tube, and FIG. FIG. 3 is a fourth diagram for explaining the work procedure when assembling the cable housing tube cutting device in the embodiment of the present invention to the cable housing tube, and FIG. 22 is a diagram in the embodiment of the present invention. The 5th figure for explaining the work procedure at the time of attaching a cable accommodation pipe cutting device to a cable accommodation pipe, Drawing 23 is a cable accommodation pipe cutting device in an embodiment of the invention. FIG. 6 is a sixth diagram for explaining the work procedure when assembling the cable housing tube, and FIG. 24 is a diagram for explaining the work procedure when assembling the cable housing tube cutting device according to the embodiment of the present invention to the cable housing tube. FIG.

  First, the operator uses the cutting device to form the opening 31 at the top of the cable housing tube 11, and then opens the inner sleeve 22 in a state where the inner sleeve 22 is extended as shown in FIG. 18. The cable is inserted into the cable housing tube 11 via the portion 31, and each cable 12 is surrounded and assembled in a cylindrical shape in the cable housing tube 11.

  Next, as shown in FIGS. 19 and 20, the operator extends the cutting ring unit 26 in a band shape, and in the order of the segments RG4, RG3, RG2, and RG1, the inner sleeve is passed through the opening 31. 22 is inserted into the cable housing tube 11 so as to be wound around, the inner sleeve 22 is enclosed in the cable housing tube 11 and assembled into a cylindrical shape, the segments RG4 and RG1 are connected by the pins, and the cutting unit 27 is connected to the segment RG1. Install.

  Subsequently, as shown in FIGS. 21 and 22, the operator wraps the cable so that the first and second outer guides 23 and 24 are wound around the inner sleeve 22 through the opening 31 in a state where the first and second outer guides 23 and 24 are extended in a band shape. The tube is inserted into the housing tube 11, the inner sleeve 22 is surrounded in the cable housing tube 11, and the cutting ring unit 26 and the cutting unit 27 are sandwiched from both sides and assembled into a cylinder.

  23 and 24, the operator engages the inner peripheral edge eg1 of the opening 31 with the groove m1, engages the inner peripheral edge eg2 and the groove m2, and the bevel gear 30 The drive unit 29 is temporarily fixed to the cable housing tube 11 by meshing with the face gear 25.

  When the cable housing tube cutting device 21 is assembled to the cable housing tube 11 in this way, the operator moves the cable housing tube cutting device 21 in the axial direction of the cable housing tube 11 and adjusts the position of the cutting blade 28. By doing so, the cutting location of the cable housing tube 11 is adjusted.

  Subsequently, the drive unit 29 is fixed to the inner peripheral edges eg 1 and eg 2 of the opening 31 of the cable housing tube 11 by fixing the pins 34 to the main body 32.

  When the drive unit 29 transmits the rotation of the drive source disposed outside the cable housing tube 11 to the cutting ring unit 26, the cutting ring unit 26 is rotated along the outer peripheral surface of the inner sleeve 22. Accordingly, the cutting unit 27 is rotated, and the inner peripheral surface of the cable housing tube 11 is cut in the circumferential direction by the cutting blade 28.

  Thus, in this embodiment, since it is not necessary to dispose the cable housing tube cutting device 21 outside the cable housing tube 11, a small work space is secured around the cable housing tube 11 to be cut. Only the cable housing tube 11 can be cut.

  Further, since it is not necessary to insert the cutting unit 27 into the cable housing tube 11 from the end of the cable housing tube 11, the cable housing tube 11 can be cut even at a location away from the end of the cable housing tube 11.

  Furthermore, even if the gap between the cable 12 and the inner peripheral surface of the cable housing tube 11 differs depending on the type of the cable 12, the outer diameter of the cable 12, the arrangement state of the cable 12 in the cable housing tube 11, and the like, the sleeve unit 22 Thus, the cable housing tube 11 can be easily cut without damaging the cable 12 by the cutting blade 28. Therefore, the work for cutting the cable housing tube 11 can be simplified.

  Moreover, since the 1st, 2nd outer guides 23 and 24 are assembled | attached in the cable accommodation pipe | tube 11 and an annular body is formed, it can prevent that the cable accommodation pipe | tube 11 becomes flat. Moreover, when the first and second outer guides 23 and 24 are inserted into the cable housing tube 11, the outer peripheral surface of the first and second outer guides 23 and 24 and the inner peripheral surface of the cable housing tube 11 are Since it abuts, the circular shape of the cable housing tube 11 can be maintained. Therefore, the cutting blade 28 can cut the inner peripheral surface of the cable housing tube 11 with a constant force, so that the construction quality can be improved.

  In the present embodiment, after the cutting ring unit 26 is assembled in the cable housing tube 11, the cutting unit 27 is attached to the segment RG1 before the first and second outer guides 23 and 24 are assembled. However, it is possible to attach the cutting unit 27 to the segment RG1 after assembling the cutting ring unit 26 in the cable housing tube 11 and subsequently assembling the first and second outer guides 23 and 24.

  In addition, this invention is not limited to the said embodiment, It can change variously based on the meaning of this invention, and does not exclude them from the scope of the present invention.

11 Cable receiving tube 12 Cable 21 Cable receiving tube cutting device 22 Inner sleeves 23, 24 First and second outer guides 26 Cutting ring unit 27 Cutting unit 28 Cutting blade 29 Drive unit 75 Cutting blade moving mechanism

Claims (8)

In a cable housing tube cutting device for cutting a cable housing tube containing a cable,
(A) a sleeve unit that surrounds and assembles the cable in the cable housing tube and forms a cylindrical body having a cylindrical shape;
(B) a rotating ring unit that surrounds and assembles the sleeve unit in the cable housing tube and forms an annular body that is rotatably disposed along the outer peripheral surface of the sleeve unit;
(C) a fixing ring unit that surrounds and assembles the sleeve unit in the cable housing pipe and forms an annular body that is fixed to the sleeve unit;
(D) a rotating ring that includes a cutting blade that is attached to the rotating ring unit and formed to protrude radially outward, and a cutting blade moving mechanism that moves the cutting blade radially outward; A cutting unit that is rotated along with the rotation of the unit and cuts the cable housing pipe in a circumferential direction;
(E) A cable housing pipe cutting device comprising: a drive unit that is connected to a drive source, transmits the rotation of the drive source to the rotary ring unit, and rotates the rotary ring unit. (A) The sleeve unit, the rotating ring unit, and the fixed ring unit are inserted into the cable housing tube through an opening formed in the cable housing tube,
(B) The cutting unit is attached to the rotating ring unit through the opening,
(C) The cable housing tube cutting device according to claim 1, wherein the drive unit is attached to the cable housing tube across the opening.   The cable according to claim 1, wherein the fixing ring unit forms an annular space for rotating the rotating ring unit and the cutting unit between an outer peripheral surface of the sleeve unit and an inner peripheral surface of the cable housing tube. Containment tube cutting device. (A) the drive unit includes a rotation transmission element on the drive side;
(B) the rotating ring unit includes a rotation transmission element on the driven side;
(C) The rotation of the drive source is transmitted to the rotary ring unit via the rotation transmission element on the driving side and the rotation transmission element on the driven side. apparatus.   The cutting blade moving mechanism includes: a rotating body that is rotated as the cutting unit is rotated along the outer peripheral surface of the sleeve unit; The cable housing tube cutting device according to claim 1, further comprising a conversion unit.   The cable accommodating tube cutting device according to any one of claims 1 to 5, wherein the sleeve unit, the rotating ring unit, and the fixed ring unit are formed by connecting a plurality of segments.   The cable receiving tube cutting device according to claim 6, wherein an angle formed by each segment forming the sleeve unit in the circumferential direction is different from an angle formed by each segment forming the rotating ring unit in the circumferential direction. The cable housing pipe cutting device according to any one of 1 to 7 is disposed inside a cable housing pipe in which a cable is housed,
A method for cutting a cable housing pipe, comprising cutting an inner peripheral surface of the cable housing pipe in a circumferential direction.

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