JP3015210B2 - Propeller take-up device for propulsion method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a propulsion method propulsion body provided with a winding portion for winding a propulsion method propulsion body formed by freely bending a plurality of propulsion pipes having an electric cable therein. It relates to a winding device.

[0002]

2. Description of the Related Art Conventionally, in the above-described propelling body take-up device for a propulsion method, as shown in FIG. 11, the take-up portion is disposed so that its rotation axis is horizontal or substantially horizontal, and The electric cable 48 extending from the rear end of the propulsion pipe while being housed inside is cut off on the inner peripheral side of the cylindrical rotary shaft 25 of the winding portion, and the electric cable 48a located in the rotary shaft 25 is separated. The portion and the portion of the electric cable 48b located outside the rotary shaft 25 are connected via a sliding contact 70 using a known brush.

[0003]

However, in the above configuration, the winding portion is arranged so that the rotation axis thereof is horizontal or almost horizontal. There is a drawback that it hangs outward and easily rubs the base and ground during winding, so that the rotation resistance of the winding part becomes large and the rotation is not performed smoothly, and furthermore, the propulsion body hangs down Since the direction and the rotation direction of the take-up unit are both vertical and coincide with each other, after stopping the propulsion of the propulsion unit, the take-up unit is pulled and rotated by the propulsion unit that hangs down by its own weight. However, there is a disadvantage that the safety is poor. And
When the brush is used at the sliding contact point 70 as described above, noise is easily generated due to the sliding contact of the brush, and there is a drawback that various control devices and measuring devices are adversely affected. As a solution to this drawback of noise generation, it is conceivable to mount the rotating drum relative to the rotating shaft so as to be freely rotatable and wind it around the rotating drum without breaking the electric cable. In this case, the electric cable is twisted with the rotation of the rotating body, and there is a problem that the durability of the electric cable is apt to be extremely reduced. The present invention solves the above-mentioned conventional drawbacks, can smoothly wind the propulsion body, and can prevent the winding section from unexpectedly rotating after the propulsion of the propulsion body is stopped. It is another object of the present invention to provide a propulsion body take-up device for a propulsion method that can be connected to external electric equipment without using a sliding contact point.

[0004]

In order to achieve the above object, a propelling body take-up device for a propulsion method according to the present invention has a take-up portion arranged such that a rotation axis thereof is vertical or almost vertical. A collar portion for receiving and supporting the propelled body in the wound state is provided on the winding portion, and an electric wire for winding an electric cable extending from a rear end portion of the propulsion tube in a state of being installed in the propulsion tube. A cable winding drum is connected to a rotating shaft of the winding section, and the electric cable winding drum is constituted by a rotating drum that rotates integrally with the rotating shaft; A take-out portion configured to be able to take out a portion on the winding start end side of the cable into the inside of the rotating drum, and a fixing portion for fixing a portion on the winding end end side of the wound electric cable in a fixed position. Equipped with an electric cable winding section, Provided biasing means winding diameter of the electric cable for biasing the electrical cable in the direction of diameter,
A support member is provided on the rotary drum for receiving the electric cable whose winding diameter is increased by the urging means as the electric cable rotates in a rewind direction at a predetermined rotation angle. The operation and effect are as follows.

[0005]

In other words, since the winding portion is arranged so that the rotation axis thereof is vertical or almost vertical, it is possible to prevent the propulsion body from sagging outward in the radial direction. In this case, the propelled body in the wound state tends to hang down in the axial direction of the winding section, but is received and supported by a flange provided in the winding section, and the shaft center is located above the flange. No longer hang in the direction. As a result, sliding contact of the propulsion body with the base or the ground during winding can be prevented, and the propulsion body can be smoothly wound. In addition, even if the propulsion body hangs between the flange and the base or the ground, in the above-described configuration, the direction in which the propulsion body hangs is the vertical direction, whereas the rotation direction of the winding unit is Is horizontal, so that after the propulsion of the propulsion body is stopped, it is possible to prevent the rewinding portion from being pulled by the propulsion body hanging down by its own weight and rotating. Further, in the electric cable winding drum, the rotating drum of the electric cable winding portion is configured to rotate integrally with the winding portion for winding the propulsion body for the propulsion method. The electric cable wound around the outer periphery of the cable does not rotate relative to the rotation axis, and is therefore not twisted. Then, when the electric cable winding unit rotates in the unwinding direction at a predetermined rotation angle of the electric cable integrally with the winding unit for winding the propulsion body for the propulsion method as described above,
The urging force of the urging means acts on the wound electric cable,
The electric cable expands its winding diameter without being tangled while being supported by the support member. Since the winding end portion of the wound electric cable is fixed at a fixed position by the fixing portion, the electric cable does not escape to the outside when the winding diameter is increased.

[0006]

As a result, the propelling body can be smoothly wound up, so that the workability is excellent. In addition, after the propulsion of the propelling body is stopped, the winding portion is pulled by the propelling body hanging down by its own weight and rotated. Because it is possible to prevent such troubles, it is excellent in safety, and it is possible to wind and unwind electric cables that are not divided in the middle without using sliding contact points without tangling or twisting. It is possible to provide a propelling body take-up device for a propulsion method capable of smoothly taking up and feeding out the obtained electric cable while avoiding generation of noise.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 8, a propulsion unit 5 (an example of a propulsion body for a propulsion method) in which a plurality of propulsion tubes T having a fixed length are flexibly connected, and the propulsion unit 5 is connected to a first and a second construction. A propulsion unit delivery mechanism 7 for delivering the underground between the pits A and B is provided. A propulsion body take-up device 60 for the propulsion method is provided on the vehicle 30 outside the ground portion of the first construction pit A. A flexible pipe holding device 2 is installed outside the construction pit B above the ground to constitute a flexible pipe burying device for a propulsion method.

A method of burying a flexible pipe by the above-mentioned flexible pipe burying apparatus for a propulsion method will be described. First, the propulsion unit 5 is propelled in the ground between the first and second construction pits A and B, and an underground hole is formed there. Is formed, and the winding corrugated pipe 1 of the flexible pipe holding device 2 is attached to the distal end of the propulsion unit 5 inserted into the underground hole.
Then, the propulsion unit 5 is taken up by the propulsion body take-up device 60 for the propulsion method, and the corrugated pipe 11 is dragged into the ground and buried. FIG. 8 shows a state in which the corrugated pipe 11 is buried underground.

The present invention relates to the propulsion method winding device 60 for a propulsion method, and the structure of the propulsion method winding device 60 will be described in detail below.

As shown in FIGS. 1, 2 and 3, the propelling body winding device 60 for the propulsion method includes a propulsion unit winding drum 6 for winding the propulsion unit 5, and And a winding and unwinding device 61 for winding and unwinding the electric cable 48 extending from the rear end of the propulsion tube T in this state. As shown in FIG. 6, the electric cable 48 has a structure in which a plurality of conductive wires 48a are housed in a flexible tubular body 48A composed of a bellows-like flexible tube. The flexible tubular body 48A is provided with each conductive wire 48A.
It is made of a material that is more slippery than the outer surface of a.

To form the drum 6 for winding the propulsion unit, the reel 3 for winding the propulsion unit (an example of a winding section) is formed in a pentagonal shape as viewed in the direction of the axis of the rotation axis. Or, it is disposed on the base 1 so as to be substantially vertical, and a reel supporting wheel 21 is provided on a lower edge of the reel 3.
In the circumferential direction, a plurality of annular rails 20 for receiving the wheels 21 are provided on the base 1, and between the reel 3 and the base 1, the relative rotation of the reel 3 with respect to the base 1 can be prevented. A stopper mechanism 19 is provided, and a rotation driving device 4 for rotating and driving the reel 3 is provided inside the reel 3. It is.

The base 1 is made of a channel member and has a rotating shaft support 18 having a height approximately half the vertical width of the reel 3.
And a rotation driving device support base 17 lower than that are provided on a square frame 28, and casters 23 are provided on the bottom surface. The rail 20 has a rising wall 24 formed on the inner circumference over the entire circumference.

The structure of the reel 3 will be described in detail.
A pair of upper and lower pentagonal frame bodies 8 are formed by angle members, and they are arranged concentrically around the cylindrical rotary shaft 25 so that both frame bodies 8 and both frame bodies 8 and the rotation Axis 25 and
Along with being integrally connected by an angle member or a channel member, a propulsion body receiving plate 9 is stuck radially outward between the respective outer peripheral portions of the pair of frame members 8 in a slightly swelled state. A collar 10 for receiving and supporting is provided spirally along the axis. The pitch of the flange 10 is set slightly larger than the diameter of the propulsion unit 5 so that the propulsion unit 5 wound on the reel 3 can be supported for each turn. In order to maintain the state reliably,
Is provided with a slope-shaped propulsion body detachment preventing portion 26 formed so as to be higher toward the outer peripheral side. The length of each side of the pentagon is set to be approximately three times the connection pitch P of the propulsion pipes T.

The rotating shaft 25 has a length substantially half the vertical width of the reel 3 and is provided from the upper side of the reel 3. The rotating shaft 25 is mounted on the rotating shaft support base 18. It is mounted so that the core is vertical and rotatably attached. In this mounting state, the length of the rotating shaft 25 is set so that most of the load on the reel 3 can be supported by the wheels 21. At the lower edge of the reel 3, a plurality of bearings C are provided in contact with the outer peripheral portion of the rising wall 24 in the circumferential direction. The end of the propulsion unit 5 wound around the reel 3 on the side opposite to the side connected to the propulsion head is fixed near the center of the reel 3, and the end opening is , And communicates with the internal space of the hollow rotary shaft 25 of the reel 3.

To construct the stopper mechanism 19, as shown in FIGS. 4 and 5, a bolt 16 as a stopper is disposed on the reel 3 side, and a tip of the bolt 16 is provided at a peripheral portion around the axis of the rail 20. A plurality of notches 15 for engaging the portions are provided at equal intervals in the circumferential direction, and bolts 16 are provided on the lower edge of the reel 3 so that the bolts 16 can be engaged and disengaged from the notches 15. The mounting state of the bolt 16 will be described. A bracket 27 having a concentric bolt insertion hole 27A and a female screw portion 27B is provided at the lower end edge of the reel 3 so that the bolt insertion hole 27A and the like face the notch 15. And the bolt 16 is screwed into the female screw portion 27B so as to be able to move back and forth.
Can be engaged and disengaged from the notch 15.
The hexagonal bolt 16 is rotated by a ratchet lever R. The bracket 27 is provided with a ball plunger 31 for ensuring the engagement of the bolt 16 with the notch 15.

The rotation drive unit 4 includes a drive sprocket S1 attached to a motor M mounted on the rotation drive unit support base 17.
On the other hand, the driven sprocket S
2 are externally fitted and fixed, the chain 12 is wound between them, and a tension sprocket D for giving tension to the chain 12 is provided.

Next, the winding and feeding device 61 will be described. As shown in FIGS. 6 and 7, the winding and unwinding device 61 includes an electric cable winding drum 51 that winds and unwinds the electric cable 48, and a case 65 that surrounds the same. It is located close to the upper position. Winding drum 5 for electric cable
1 is composed of a rotating drum 58 externally fitted to the rotating shaft 25, and two disk-shaped members 59 fixed to the rotating drum 58 in a horizontal posture, and driven by a motor M via the rotating shaft 25. It is composed. An electric cable winding section 52 is constituted by the rotating drum 58, a take-out section 55, a fixing section 56, and both disc-shaped members 59 described later, and the lower disc-shaped member 59 serves as an electric cable support section. I have. The rotary drum 58 is provided with a take-out portion 55 extending from the end of the propulsion unit 5 and taking out the electric cable 48 passing through the rotary shaft 25 into the electric cable take-up portion 52. The take-out portion 55 is configured by forming a communication hole 55a in the rotating drum 58 and the rotating shaft 25. Near the center of the disk-shaped member 59,
A U-bolt 63 is provided near the communication hole 55a as a fixture for fixing the electric cable 48 near the winding start end.
Is provided. A spiral spring (an example of an urging means) 57 for urging the electric cable 48 in a direction in which the winding diameter of the wound electric cable 48 is increased is provided around the rotating drum 58. The case 65 is provided with a fixing portion 56 for fixing the other end of the electric cable wound by the electric cable winding portion 52 to the case 65 side. This fixing part 56
Is configured such that a fixture 56 a having a U-shaped portion along the outer periphery of the electric cable 48 is attached to the case 65.

The propulsion pipe T has two types of first and second propulsion pipes T1 and T2 having the same length but different structures.
2 in the propulsion unit 5 and two second
One first propulsion tube T1 is arranged between the propulsion tubes T2, and they are connected to each other to form one unit, and a number of the units are connected.

[Another Embodiment] As shown in FIG. 9, two disk-shaped members 59 and a case 59 are formed in an inverted dish shape in which the position becomes lower toward the outer peripheral side, and is supported on the disk-shaped members 59. The disc-shaped member 59 may be provided with a function as the urging means 57 so that the electrical cable 48 thus formed slides down to the outer peripheral side by its own weight. The biasing force in this case is the gravity acting on the electric cable 48.

As shown in FIG. 10, the winding and feeding device 61 may be provided on the lower surface side of the reel 3.

The reel 3 may be formed in a circular shape when viewed in the direction of the rotation axis.

A wire such as a conductive wire may be directly provided inside without using the flexible tubular body 8A at all.

The winding / unwinding device 61 for the electric cable 48 of the present invention is not limited to the device for the interior of a buried pipe used in the above-described propulsion method, but may be used as a winding / unwinding device 61 for the electric cable 48 mounted on various types of rotary shafts 25. , Can be applied to various things.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a drum for winding a propulsion unit.

FIG. 2 is a partially cutaway explanatory view of a propulsion unit winding drum.

FIG. 3 is a front view of a propulsion unit winding drum.

FIG. 4 is a sectional view of a stopper mechanism.

FIG. 5 is a bottom view of the stopper mechanism.

FIG. 6 is a sectional view of a main part.

FIG. 7 is a cross-sectional plan view of the winding and feeding device.

FIG. 8 is an overall view of a flexible pipe burying device.

FIG. 9 is a sectional view of a main part of another embodiment.

FIG. 10 is a front view of another embodiment.

FIG. 11 is a cross-sectional view of the prior art.

[Explanation of symbols]

 Reference Signs List 3 Winding part 5 Propulsion body 10 Flange part 25 Rotating shaft 48 Electric cable 54 Rotating trunk 55 Take-out part 56 Fixing part 57 Urging means 58 Rotating trunk 59 Support member T Propulsion pipe

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazunori Tsujimoto 1-1-1, Hama, Amagasaki-shi, Hyogo Prefecture Inside Kubota Research Institute for Technology Development (72) Inventor Toshinori Kawabata 1-1-1, Hama, Amagasaki-shi, Hyogo Prefecture (56) References JP-U 4-115868 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B65H 75/34-75/50

Claims (1)

(57) [Claims] 1. A propulsion method having a winding portion (3) for winding a propulsion body (5) for a propulsion method, comprising a plurality of propulsion pipes (T) having electric cables installed therein and being flexibly connected. A winding unit (3), wherein the winding unit (3) is arranged so that its rotation axis (25) is vertical or almost vertical, and receives the wound propelling body (5). A supporting flange (10) is provided on the winding section (3), and an electric cable (48) extending from a rear end of the propulsion pipe (T) while being installed in the propulsion pipe (T) is provided. An electric cable winding drum (51) for winding is connected to a rotating shaft (25) of the winding section (3), and the electric cable winding drum (51) is configured by the rotating shaft. The rotating drum (5) that rotates integrally with (25)
8), a take-out portion (55) configured to be able to take out a portion on the winding start end side of the wound electric cable (48) into the inside of the rotary drum, and a wound electric cable (4).
8) An electric cable winding section (52) having a fixing section (56) for fixing the winding end portion at a fixed position is provided, and the winding diameter of the wound electric cable (48) is increased. An urging means (57) for urging the electric cable (48) in a radial direction is provided. As the electric cable (48) rotates in a rewinding direction at a predetermined rotation angle, the urging means (57) is provided. 57. A propulsion body take-up device for a propulsion method, wherein a support member (59) for receiving the electric cable (48) whose diameter is increased by 57) is provided on the rotary drum (58).