JPS61193675A - Master rope mount apparatus for raising utility pole - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention provides a method for attaching an auxiliary rope, one end of which is fixed to the worker's waist, etc., so that the other end can be slid and fixed when working on a utility pole or the like. This invention relates to a main rope attachment device for fixing a main rope for lifting and lowering along a utility pole.

[Conventional technology]

In order to peek the upper end of the main rope for lifting and lowering a utility pole into the fixing bracket at the top of the utility pole, which has a ground clearance of approximately tom, conventionally one end of the main rope is locked to the tip of the pole, and the pole is operated from the ground to secure the above-mentioned fixation. One end of the main rope is peeked through the metal fitting, and the other end of the main rope is fixed to the bottom of the utility pole. For example, there is a method such as Utility Model No. 5R-Asst No. 1 (problem to be solved by this invention).However, these conventional methods are difficult to attach one end of the main rope from the ground to the fixing bracket at the top of the utility pole. Attach one end to the tip of the operating rod, hang it on the above-mentioned fixing bracket, pull down one end of the main rope using a weight provided at one end of the main rope, and attach one end of the main rope to the pre-loaded ring connected to the other end of the main rope. to lock. Since these operations are performed using a long rod, the operations are complicated, require skill, and have poor workability.

In addition, since it is extremely complicated to attach the main rope for climbing up and down to utility poles, etc., there is an idea to permanently install the main rope to the utility pole etc. During these repair works, these main lines become a nuisance, and if they are permanently installed on all utility poles, it would be too expensive, and they also have disadvantages such as being unsightly.

[Means for solving problems]

The present invention has been made in view of these points, and it is an object of the present invention to provide a main rope attachment device for lifting and lowering utility poles, which allows the upper end of the main rope to be attached to the fixing fitting at the top of the utility pole extremely easily and reliably by ground operation. be. That is, in the configuration of the first invention, a gripping base having an opening groove on its periphery into which a fixing fitting protruding from the outer periphery of a telephone pole can be freely inserted is detachably fixed to the upper part of an appropriate operating rod.

A rotating hook ring having an opening notch corresponding to the opening groove is rotatably provided on the base body, and the rotating hook ring can freely close the opening of the opening groove into which the fixing metal fitting is inserted. One end of each of the main rope and reserve rope is fixed to both sides of the opening notch.

More I! The configuration of the λ invention comprises, in addition to the device main body of the first invention, a rod-shaped main body that can freely hold the above-mentioned fixing metal fitting in the opening groove of the base plate 1, and a child rope hook projecting from the rod-like main body and extending approximately parallel thereto. This child rope hook is arranged so as to be located under the base between the pre-loading and the main rope when the rod-shaped main body is gripped by the opening groove of the base.

[For production]

To attach the main rope to a telephone pole or the like using the device of this invention, fix the gripping base to the upper part of the operating rod, align the opening cutout of the rotary hook ring with the opening groove of the base, and then attach the gripping base on the upper part of the operating rod. Bring the fixture to the protruding part of the top of the telephone pole, etc., and insert the fixture into the opening groove in the base. When you pull the main rope from the ground, the rotating hook ring rotates,
Close the opening of the open groove. In this state, the operating rod is removed from the gripping base, the other end of the main rope is fixed to the lower part of a telephone pole, etc., and the main rope is stretched along the telephone pole, etc. To remove the main rope after working on a utility pole, etc., first remove the lower end of the main rope from the bottom of the utility pole, etc., and then pull the pre-sheathing to rotate the rotating hook ring and open the opening of the opening groove on the gripping base. , the gripping base comes off from the fixing metal fitting, and the upper end of the master rope also comes off from the fixing metal fitting.

At this time, in the second invention, the preload is caught on the child rope hook of the fixing metal fitting, and when the preload is let out from the ground, the gripping base and the main rope come down to the ground, and finally the preload is hooked, and the preload is pulled out from the fixing metal fitting on the top of the utility pole. This is to remove the end of the

〔Example〕

A first embodiment of the present invention will be described below with reference to FIGS. 1 to 7. First, to explain the main body of the device, 1 is a gripping base consisting of two plates facing each other with a certain distance between them;
2 is an opening groove provided on one side of each plate of this base 1; 3 is a circular base with a substantially annular outer periphery provided at the periphery of the opening groove between these plates; 4 is a circular base of this circular base 3; This rotating hook ring 4 is a rotating hook ring that is rotatably attached to the outer circumference.
It has an opening notch 4a that is slightly larger than the opening groove 2 of the substrate 1, and the opening of the opening groove 2 of the base body 1 can be freely closed. 5 is a guide projecting plate provided integrally with the base body 1 above and below the opening of the opening groove 2 of the base plate 1, and 6 is this rotary hook ring 4.
7 is a master rope locking piece projecting from the outer periphery of one side sandwiching the opening notch 4a, 7 is a child rope locking body also protruding from the other side outer periphery, and 8 is an opposing plate forming the lower guide projecting plate 5. A plurality of rollers 9 are rotatably provided between the bodies, one end of which is fixed to the hole of the main rope locking piece 6, and a chain 10 that is inserted into the outer circumferential groove of the rotating hook ring 4, and 10 is the other end of the chain 9. 11 is a master rope with one end fixed, 11 is a pre-loaded rope that is hooked around the plurality of rollers 8 and meandered and fitted into the outer circumferential groove of the rotating hook ring 4, and one end is fixed to the child rope locking body 7; 12 is an upper guide The suppressing plate is attached to the free end of the spring 13 fixed between the opposing plates forming the projecting plate 5, so that the opening cutout 4a of the rotary hook ring 4 and the opening groove 2 of the base body 1 are located at the same position. At this time, the main rope locking piece 6 is pressed by the force of the spring 13 to prevent the rotating hook ring 4 from rotating.

14 is provided at each lower part of the plate forming the base l,
An insertion piece 15 having a notch 14a in the center is an operating rod, and the tip of the operation rod 15 has a metal fitting 15a into which the insertion piece 14 at the bottom of the base 1 can be freely inserted. 16
The receivers are provided on both sides of the metal fitting 15a, and the upper ends thereof are projecting protrusions, and the receivers 17 are protrusions projecting from the center of the front and rear sides of the metal fitting 15a.

Next, the fixing metal fitting □□□ fixed to a utility pole etc. will be explained based on FIGS. The upper side of the arm n is mounted and fixed on the tip of the arm n, and the lower side thereof is inclined obliquely outward. A chevron-shaped central portion 21a is formed at the center of the lower side of the main body 21, and sloped portions 21b are formed on both sides of this chevron-shaped central portion 21m. ``B'' is a sub-rope hook that protrudes rearward from both sides of the main body 21 and is bent so as to be approximately parallel to the inclined portion 21b, and the ends of the hooks on both sides face each other at a constant interval. ing.

In order to attach the upper end of the main rope to the fixing bracket provided on the upper part of the utility pole using the device of this embodiment, as shown in FIG. , the lower support supports the base of the telescopic operating rod 15. As mentioned above, the gripping base 1 is attached to the upper end of this operating rod 15. When this operating rod 15 is stretched by an appropriate means, the gripping base 1 is attached to the chevron-shaped central portion 211L of the fixture I. The upper surface of the lower guide plate 5 that protrudes laterally hits, and the operating rod 15 cannot be extended any further.

Therefore, as shown in FIG. 1, when the gripping base 1 is slightly moved closer to the telephone pole, the chevron-shaped central portion 211 with the fixing fitting attached
Then, it slides along the upper surface of the lower guide projecting plate 5 as shown by the arrow and enters the opening groove 2. After confirming that the chevron-shaped central portion 21& of the fixing fitting has entered the opening groove 2 of the base body 1 in this manner, the main rope 10 is pulled downward from the ground. Then, the main rope locking piece 6 of the rotating hook ring 4 comes off from the pressing plate 12 and the rotating hook ring 4 moves to the first position.
2 and 7 (Bl
The opening of the opening groove 2 is closed as shown in FIG. As the rotating hook ring rotates 40 times, the preload 11 is rolled into the outer circumferential groove. After that, while keeping this main rope 10 under tension, operate the operating rod 15.
When the is compressed by an appropriate means, the operating rod 15 is retracted as shown in FIG.
The metal fitting 15a of the upper end receiver is removed from the insertion piece 14 of the gripping base 1, and the operating rod 15 is further retracted to remove it from the utility pole U. At this time, the base body 1 gripping the chevron-shaped central portion 21k with the fixing fittings automatically slides from the chevron-shaped central portion 21a to one of the inclined portions 21b and settles on the lower part of one side of the bar-shaped main body 21.

Here, the lower guide projecting plate 5 of the base body 1 is positioned on the child rope hook n of the fixing metal fitting I, and is in a state of being straddled over this. Then, as shown in FIG. 7(C), the lower end of the main rope 10 is held under tension and fixed to the U-shaped hook n at the tip of the lower support provided at the lower end of the utility pole U. In this way, the main rope 10 is stretched along the utility pole, and one end of the auxiliary rope is connected to the worker's waist, etc., and the other end of the auxiliary rope is slidably and fixedly attached to the main rope. Climb up and work on the upper part of the utility pole. To remove this main rope 10, first remove the lower end of the main rope 10 from the above U-shaped hook, and then pull the cable 11 downward from the ground. The rotating hook ring 4 rotates counterclockwise in FIG. 3, and the opening of the opening groove 2 opens as shown in FIG. Then, while tensioning the preload 11, when pulling the master rope 10 downward, the chevron-shaped central part 21a of the fixing bracket will come out of the opening groove 2 of the base l, and the base 1 will be removed from the fixing bracket. 11 is caught on the child rope hook n attached to the fixing metal fitting, and when the main rope 10 is pulled close to the main rope 10, the main rope IO1
The board 1° and the preload 11 descend in this order, and finally the end of the preload 11 passes through the child rope hook and falls to the ground. In this way, the gripping base 1, main rope 10, etc. are all removed from the fixing metal fittings on the top of the utility pole.

1 to 10 show a second embodiment of the present invention, in which the opening groove 2 of the gripping base 1 of the first embodiment is automatically closed. That is, the gripping base 10 of the first embodiment and the circular base 3 have a rotary ring drive piece I pivoted at approximately the center by a pin 31, and the rotary hook ring 4 is provided with a protrusion 32 that is pressed by this drive piece. , a spring is provided between the minus side of the rotary ring drive piece (part) and the pin 31, and the other configurations are almost the same as in the first embodiment.

In this embodiment, as in the first embodiment, insert the chevron-shaped center part 21& of the fixing metal into the opening groove 2, and push it further into the opening groove 2. The rotary ring drive piece is pushed by this chevron-shaped medium, and as a result, the rotary ring drive piece (to) rotates clockwise in the figure around pin 31 against the force of the spring, and the spring (Exceeds the put point.

Then, the rotating ring driving piece 30 is further urged to rotate by the spring, and this force pushes the protrusion n protruding from the rotating hook ring 4, and the rotating hook ring 4 rotates clockwise as shown in FIG. The opening of the opening groove 2 of the base body 1 is closed.Then, when the main rope 10 is pulled downward, the i-th
The rotating hook ring 4 rotates clockwise until the master rope locking piece 6 at one end of the master rope 10 comes to the lower part of the circular base 3, as shown in FIG. Accordingly, the child rope 11 also rotates the hook ring 4.
It gets caught up in the outer circumferential groove.

The opening 1'l#2 of the gripping base 1 is completely closed by the rotating hook ring 4 as shown in FIG. In this state, as in the seventh embodiment, the lower end of the main rope 10 is fixed to an appropriate location under the telephone pole, and the main rope 10 is stretched.

In this way, in this second embodiment, when the opening groove 2 of the gripping base 1 is hooked onto the fixing bracket and the fixing bracket is inserted into the opening groove 2, the opening of the opening groove 2 is automatically closed, and the spray The operation can be performed reliably and safely. Also, Figures 1/1 and 12 show a third embodiment of the present invention, in which the opening groove 2 of the gripping base 1 of the first embodiment is provided on the upper edge. The other configurations are the same as in the first embodiment.

Furthermore, in all of the above-mentioned first to third embodiments, regarding the connection between the gripping base 1 and the operating rod 15, the insertion piece 14 provided at the lower part of the gripping base 1 is connected to the receptacle provided at the upper end of the operating rod 15. After inserting the fixing fitting into the opening groove 2 of the gripping base 1 and closing the opening of the opening groove 2 with the rotating hook ring 4, when the operating rod 15 is pulled downward, the gripping base is 1, the upper end of the operating rod 15 can be removed. Therefore, in order to prevent the metal fitting 15a from coming off from the insertion piece 14 of the gripping base 1, the receiver of the operating rod 15 is installed when not in use.
A locking device may also be provided. For example, as shown in the third embodiment, a key piece U is provided on the outer periphery of the rotary hook ring 4, and a small hole is provided on the upper end side of one protruding piece 16 of the metal fitting 15a for the receiver of the operating rod 15, as shown in FIG. When the opening groove 2 is open as shown in FIG. 2, the key piece is inserted into and locked into the small hole, and the gripping base 1 and the operating rod 15 are locked and fixed. In addition, when the opening of the opening groove 2 of the gripping base 1 is closed with the rotary hook ring 4, the key piece is removed from the small hole as the rotary hook ring 4 rotates, and in this state, the operating rod 15 is pulled. The upper end of the operating rod 15 is removed from the gripping base 1.

〔Effect of the invention〕

In this way, in this invention, by inserting the fixing fitting provided in advance on the top of the utility pole into the opening groove of the gripping base that is detachably attached to the upper end of the operating rod, and pulling the main rope downward, the gripping base can be attached and removed. The opening of the opening groove in the base is closed, and the gripping base grips the fixing metal. When the operating rod is lowered downward, the operating rod comes off from the gripping base, and the lower end of the main rope is attached to the bottom of a utility pole, etc. If it is fixed to the pole, the main rope will be stretched along the pole. Therefore, for operation from the ground, all you have to do is hook the fixing metal fitting into the opening groove of the gripping base at the upper end of the operating rod, insert it, pull down the main rope, and then pull down the operating rod. can be securely attached to.

In addition, in the second invention, when the gripping base is gripped by the fixing metal fitting and the master rope is pulled downward, the gripping base moves in the fixing metal fitting, and the child rope hook of the fixing metal fitting is positioned below the gripping base. When removing the parent rope, even if you pull the child rope downwards to open the opening groove of the gripping base, the child rope will get caught in the child rope hook of the fixing bracket, and the gripping base will be unnecessarily pulled from the ground. Therefore, the upper end of the main rope can be removed from the fixing fittings extremely safely and easily.

[Brief explanation of the drawing]

7 to 3 are partially cutaway side views showing the procedure for attaching the gripping base to the fixing bracket according to the first embodiment of the present invention, and FIGS. 4 to 3 respectively show the fixing bracket of the present invention. A front view, a side view, and a plan view showing an example of FIG. 7(A),
(B) and (C) are explanatory side views showing the procedure for attaching the main rope to the utility pole in the 1% embodiment, respectively, and Figures WJt to 10 are respectively the fixing of the gripping base in the 2nd embodiment of the present invention. A partially sectional side view showing the procedure for attaching the gripping base to the fixture, and a partially sectional side view showing the procedure for attaching the gripping base to the fixing fixture in the third embodiment of the present invention. It is a diagram. In the figure, 1 is a gripping base, 2 is an opening groove, 3 is a circular base, 4 is a rotating hook ring, 5 is a guide projecting plate, 9 is a chain, 10 is a master rope, 11 is a child rope, 14 is an insertion piece, 15 is an operating rod, 15a is a receiving metal fitting, addition is a fixing metal fitting, 21 is a rod-shaped main body, 21JL is a chevron-shaped central part, n is an arm, Otsu is a child rope hook, Sae is a telephone pole, (capital) is a rotating ring drive piece , the wings are protrusions, and the wings are springs. Figure 3 Figure 1 Figure 2 Evening Figure 2θ Figure 11 Figure 12

Claims (2)

[Claims] (1) A gripping base having an opening groove on its periphery into which a fixing fitting protruding from the outer periphery of the utility pole can be freely inserted is removably fixed to the upper part of an appropriate operating rod, and this base has an opening notch corresponding to the opening groove. A rotary hook ring is rotatably provided, and this rotary hook ring can freely close the opening of the opening groove into which the fixing fitting is inserted, and a parent rope and a child rope are provided on both sides of the opening notch of the rotary hook ring. A main rope attachment device for lifting and lowering utility poles, characterized in that one end of each rope is fixed. (2) A gripping base having an opening groove on its periphery is removably fixed to the upper part of an appropriate operating rod, and a rotating hook ring having an opening notch corresponding to the opening groove is rotatably provided on this base; This rotating hook ring has an opening of an opening groove that can be closed freely, and a device main body with one end of each of a parent rope and a child rope fixed to both sides of the opening notch of this rotating hook ring, and the above rotating hook ring. A child rope hook is protruded from the rod-shaped main body that can be freely gripped in the opening groove with the opening closed, and is approximately parallel to the rod-shaped main body. 1. A main rope attachment device for lifting and lowering utility poles, characterized by comprising a fixing metal fitting positioned under the base between the main rope and the main rope.