JPH04281316A - Joint method for spiral rod in scraper type snow removing equipment - Google Patents

Abstract

PURPOSE:To make it possible to enhance the cost performance and workability of a joint for attaching a spiral rod to a drive shaft of the main body of a scraper type snow removing equipment capable of removing snow by creating a linear motion. CONSTITUTION:In a scraper type snow removing equipment, a spiral rod 4 having the inner diameter larger than the outer diameter of an electric conductor 1 is wound round the outer periphery of the electric conductor, and the spiral rod 4 is subjected to a linear motion for removing snow. And the spiral rod 4 is attached to a shaft 7 for driving the main body with a joint device. Joint device 10 comprises a guide cylinder having a curvature suited to the spiral rod 4, to which the tip of the spiral rod 4 is inserted and fixed, and a supporting base attached to the drive shaft 7 for supporting said guide cylinder in a freely rotatable manner.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a scraper-type snow removal device that removes snow by winding a spiral rod having an inner diameter larger than the outer diameter of an electric wire around the outer circumference of an electric wire and moving the spiral rod linearly. This invention relates to a joint method for attaching a rod to a drive shaft of a main body.

0002

[Prior Art] Conventionally, there has been a scraper-type snow removal device that winds a spiral rod having an inner diameter larger than the outer diameter of the wire around the outer circumference of the wire and moves the spiral rod in a straight line to remove snow from the wire. It is known (Japanese Patent Application No. 62-154087).

[0003] Further, the specific configuration of the drive device and the method of attaching the spiral rod to the drive shaft are also disclosed in the scraper type snow removal device (Japanese Patent Application No. 1-112711) filed by the present applicant. is being done.

[0004] The scraper type snow removal device according to this earlier application is
As shown in FIG. 5, a spiral rod 4 for snow removal having an inner diameter larger than the outer diameter of the electric wire is wound around the outer circumference of the electric wire 1, and power is obtained from the current transformer 2 and the rod is connected to the electric wire 1 through the control unit 9. By rotating the motor of the drive device 8 and linearly moving the drive shaft 7 and the spiral rod 4 for snow removal attached to the drive shaft 7, snow on the electric wires is dropped. In addition, 3 is a spiral rod for protecting the electric wire, and the electric wire 1 and the spiral rod 4 for snow removal are in direct contact,
In order to prevent damage to the outer surface of the electric wire 1, it is wound around the electric wire 1 in the opposite direction to the spiral rod 4 for snow removal.

[0005] Here, the snow removal spiral rod 4 is attached to the drive shaft 7 in the following manner. First, the spiral rod 4 for snow removal is machined to straighten the curvature of the tip of the snow removal spiral rod 4 so that it can be attached to the drive shaft 7 of the main body, and holes for bolts are drilled. Then, the gap between the spiral rod 4 for snow removal and the drive shaft 7 is supplemented by a spacer 5, and the spiral rod 4 for snow removal and the drive shaft 7 are connected by a bolt 6.

[0006]

[Problems to be Solved by the Invention] However, the above-described mounting structure for the spiral rod for snow removal (FIG. 5) is still insufficient in the following points.

(1) In order to attach the tip of the spiral rod for snow removal to the drive shaft, it is necessary to straighten the curvature of the tip of the spiral rod for snow removal, and it is necessary to straighten the curvature of the tip of the spiral rod for snow removal. Therefore, it is necessary to drill a hole at the tip of the spiral rod for snow removal. Therefore, cost performance and workability are very poor.

(2) Measures for Snow Removal Because the distance between the spiral rod for snow removal and the drive shaft changes depending on the size of the electric wire and the installation position of the device, it is necessary to newly change the curvature of the tip of the spiral rod for snow removal or increase the distance. A supplementary spacer is required.

(3) When dealing with multiple conductors, that is, removing snow from multiple electric wires, the number of snow removal devices equal to the number of conductors is required, resulting in very poor cost performance, ease of construction, and ease of handling. .

An object of the present invention is to provide a joint method that eliminates the drawbacks of the prior art described above and improves the cost performance and workability of a scraper type snow removal device.

[0011]

[Means for Solving the Problems] In the spiral rod joint method of the present invention, a spiral rod having an inner diameter larger than the outer diameter of the electric wire is wound around the outer circumference of the electric wire, and the spiral rod is moved linearly to remove snow. A joint device that attaches the spiral rod of the scraper-type snow removal device to the drive shaft of the main body has a guide tube that has a curvature that matches the spiral rod and into which the tip of the spiral rod is inserted and fixed as is, and a guide tube that is attached to the drive shaft and that guides the This uses a joint device consisting of a support base that rotatably supports the cylinder.

0012

[Operation] The guide tube of the joint device has a curvature that matches the spiral rod, so it can be inserted and fixed as is without deforming or processing the tip of the spiral rod. Since it is rotatably supported by a support base attached to the shaft, it is easy to insert and fix the tip of the spiral rod. Therefore, the cost performance and workability of the joint between the drive shaft and the snow removal spiral rod in the scraper-type snow removal device are improved.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below based on the illustrated embodiments.

FIG. 1 shows how the spiral rod 4 for snow removal and the drive shaft 7 are connected by the joint method of the present invention, in which a normal spiral rod 4 for snow removal can be connected to the drive shaft 7 of the main body without deformation. For attachment, a joint device 10 is used as another jig having a curvature suitable for the snow removal spiral rod and a rotatable structure. Note that 3 is a spiral rod for protecting electric wires.

As shown in FIGS. 2 and 3, the joint device 10 consists of two members. One has a guide tube (steel pipe) 12 into which the spiral rod 4 for snow removal is inserted, a neck 13 extending in a T-shape from the guide tube, and a pivot shaft 14 extending coaxially from the lower end of the neck. This is the movable part 11 consisting of the following. The guide tube 12 of this movable part is processed to have a curvature that matches the curvature of the snow removal spiral rod 4.

The other one is a support base 15 which rotatably supports the movable part 11, and which supports the pivot shaft 1 of the guide tube 12.
4 is inserted into the bearing hole 16, and a threaded portion 17 for fixing the support base 15 to the drive shaft 7. This threaded portion 17 protrudes from the support base 15 in a direction perpendicular to the shaft 14, and is connected to the threaded hole 7 at the tip of the drive shaft 7.
The entire joint device 10 is attached to the drive shaft 7 by inserting it into the drive shaft 7.

In the joint device 10, the guide tube 12 of the movable part 11 is processed to have a curvature commensurate with the curvature of the spiral rod 4 for snow removal, so the tip of the spiral rod 4 for snow removal is processed into a straight state. You can put it in without any problems. Further, the guide cylinder 12 is supported by a support base 15 and can be rotated, that is, can be rotated around the axis A,
Furthermore, since the support stand 15 has a structure that allows it to rotate about the axis B relative to the drive shaft 7, it is extremely easy to insert the spiral rod 4 for snow removal into the guide tube 12. That is, when inserting the spiral rod 4 for snow removal into the guide tube 12, the guide tube 12 can rotate around the axis 14, and the entire joint device 10 can rotate around the threaded part 17, so the spiral rod 4 for snow removal can be inserted into the guide tube 12.
You will be able to enter smoothly.

In this way, the snow removal spiral rod 4
After being inserted into the guide tube 12, the snow removal spiral rod 4 is fixed to the guide tube 12 by stop rings 18 at both ends of the guide tube 12. The snow removal spiral rod 4 is thus connected to the drive shaft 7 by the joint device 10.

Although the above embodiment deals with the case where the electric wire 1 is one, the present invention can also be applied to the case where there are multiple conductors. FIG. 4 shows this example, and the joint device 20 here has extension parts 19 formed on both sides of the support base 15 as a part of the support base 15 or as a part of the neck part 13, and extension parts 19 formed on both ends of the support base 15, respectively. It has a configuration in which the above-mentioned movable part 11 is provided. According to the joint device 20 having this configuration, by simply connecting the joint device 20 to the drive shaft 7 of one snow removal device, the joint device 20 can control the individual spiral rods 4 for snow removal wound around each electric wire 1. They can be moved together, and the movement drive of each spiral rod 4 for snow removal can be covered by one snow removal device.

[0020]

[Effects of the Invention] As described above, according to the joint method of the present invention, the following excellent effects can be obtained.

(1) The spiral rod for snow removal can be attached to the drive shaft without changing the curvature of the tip end.

(2) Even if the distance between the snow removal spiral rod and the drive shaft changes, the connection can be made by changing only the joint device.

(3) Workability is good because the spiral rod for snow removal can be fixed simply by inserting it into the joint device and fixing it with a stop ring.

(4) The tip of the spiral rod for snow removal only needs to be machined to form a groove to stop the stop ring. Therefore, it leads to cost reduction.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing how a spiral rod for snow removal and a driving shaft are connected by the joint method of the present invention.

FIG. 2 is a side view of the joint device.

FIG. 3 is a front view of FIG. 2;

FIG. 4 is a diagram showing an example of application of the joint method of the present invention to two conductors.

FIG. 5 is a diagram showing a conventional scraper type snow removal device.

[Explanation of symbols]

1 Electric wire 2 Current transformer 3 Spiral rod for protecting electric wires 4 Spiral rod for snow removal 5 Spacer 6 bolts 7 Drive shaft 8 Main unit drive device 9 Control section 10 Joint device 11 Movable part 12 Guide tube (steel pipe) 13 Neck 14 Rotation axis 15 Support stand 16 Bearing hole 17 Threaded part 18 Stop ring 19 Extension part 20 Joint device

Claims (1)

[Claims] Claim 1: In a scraper-type snow removal device that removes snow by winding a spiral rod having an inner diameter larger than the outer diameter of the electric wire around the outer circumference of the electric wire and moving the spiral rod linearly, the spiral rod is attached to a driving shaft of the main body. The guide tube, which has a curvature commensurate with the spiral rod and into which the tip of the spiral rod is inserted and fixed, is attached to the joint part attached to the shaft, and the support base is attached to the drive shaft and supports the guide tube in a rotatable manner. A method for joining spiral rods in a scraper-type snow removal device characterized by using a joint device.