JPS6033925B2 - Avalanche protection cover, method for cutting snow eaves at entrances and exits of tunnels, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to avalanche protection coverings in areas with heavy snowfall, and a method for cutting snow eaves that occur at the entrances and exits of side streets and the like.

This kind of snow eaves that forms at entrances and exits is extremely dangerous because it cannot withstand its own weight due to snowfall or changes in temperature and suddenly falls onto the road or track. Removal of this kind of snow eaves is important for road and track management in winter. This is one of the tasks.

However, currently there is no dedicated snow removal machine for this type of snow eaves removal, so workers have to climb onto the roof of the entrance to remove the snow eaves, which is extremely dangerous and requires a lot of effort. be.

In addition, the applicant proposed in Japanese Patent Publication No. 55-31246 a method in which a rope connected at an angle to a hoop mounted on a movable platform so that it can move freely is cut by intervening in a snow eave and moving the movable platform. ing.

However, this was dangerous because the rope was stretched diagonally, so the snow eaves at the entrance had to be cut diagonally, leaving the base of the snow eaves remaining.

The present invention has been made in view of the above circumstances, and provides avalanche protection covers that can eliminate the above-mentioned conventional drawbacks, and a method for cutting the snow eaves at the entrances and exits of pig roads. The rope is vertically moved by the operation of the lifting device, which can be raised and lowered freely in the horizontal direction of the entrance.The rope is then cut in the horizontal direction at the base of the snow eave and cut from the bottom to the top, thereby raising and lowering the rope. By simply equipping an inexpensive device for this purpose, workers can easily dispose of snow cornices while on the ground.

Next, the snow eaves treatment method of the present invention will be explained with reference to the accompanying drawings showing examples. FIG. 1 is a perspective view of the first embodiment, in which a pole 3 is erected on one side of the entrance/exit 2 of the avalanche protection cover 1, a pair of guide rollers 4 are provided on the top of the pole 3, and a bottom of the pole 3 is provided with a pair of guide rollers 4. A pair of winches 5, 5a are provided in the , one side of the guide wire rope 6 is wound around one of the winches 5, and the winding side of the guide wire rope 6 is engaged with the guide roller 4, and then the other winch 5 is wound up. It is wound around the winch 5a, one end of the wire rope a for cutting the snow eaves is connected 7 to the guide wire rope 6 above the winch 5a, and the other end is fixed 7a to the other end of the roof 2a of the entrance 2. A wire rope (a) for cutting the snow eaves is installed almost horizontally in the lateral direction at the lower part of the roof part 2a. 8 in the figure is a roof portion 2a for supporting the wire rope 6a in a standby state.
It is a rope holder installed in. Therefore, the wire rope a for cutting the snow eaves, which is installed almost horizontally in the middle of the lower part of the roof part 2a, is located below the base of the snow eaves c.
When the winch 5 is operated to wind up the guide wire rope 6 and the other winch 5a is operated to let out the guide wire rope 6, the connecting portion 7 at one end of the wire rope a for cutting the snow eave gradually rises and the eaves are cut. The wire rope a is inclined around the other end fixing part 7a, intervenes in the lower lateral and middle direction of the root of the snow eaves c, and is further cut up from the bottom to the top to cut the snow eaves c from the root.

After cutting the snow eaves c, the winch 5a winds up the wire rope 6, and another winch 5 lets out the guide wire rope 6, lowers the connecting part 7, and cuts the snow eave cutting wire rope a to the lower part of the roof 2a. Wait in the middle direction.

In that case, the winch is shown as a manual type, but it may of course be an electric type, and may be remotely controlled.
Furthermore, although the pair of winches 5 and 5a are shown to be operated individually in the drawings, they may be connected by a gear or the like and operated synchronously. FIG. 2 is a perspective view of the second embodiment, with poles 13 on both sides of an arched entrance 12 like a pig passage 11.
A guide loaf 14 is provided at the top of the pole 13, and a pair of winches 5, 5a are provided at the bottom of the pole 13, and one side of the guide wire rope 16 is wound around one winch 15. The pond side of the guide wire rope 16 is engaged with the guide roller 14 and then wound around the other winch 15a, and one end of the snow eave cutting wire rope a is connected to the guide wire rope 16 on the one side.
17, and connect the other end to the guide wire rope 1 on the other side.
6 and a connection 17a, and a wire rope a for cutting the snow eave is installed almost horizontally in the lateral direction of the lower part of the arched roof part 12a. In the figure, 18 is a lobe receiver. Therefore, the wire rope a for cutting the snow eave c is installed almost horizontally in the lateral direction at the lower part of the roof part 12a, and the wire rope a for cutting the snow eave is positioned below the root of the snow eave c. While winding up the wire rope 16, the other winches 15a on both sides are operated to remove the guide wire 16.
When it is let out, the connecting parts 17 and 17a at both ends of the wire rope a for cutting the snow eave gradually rise, and the wire rope a for cutting the snow eave intervenes in the lateral and middle direction at the bottom of the root of the eave c, and then cuts it up from the bottom to the top to cut the eave c. The process involves cutting from the root.

In this case, it is of course possible to provide a rope receiver 18 at the top of the arched roof part 12a as shown in FIG. 3, so that the wire rope a for cutting the snow eaves can be held in a waiting state not horizontally but along the arched roof. .

Although it is preferable to have the wire rope a for cutting the snow eaves stand by at the bottom of the roofs 2a and 12a and cut the snow eaves c from the bottom to the top as in the first and second embodiments, the wire rope a is Of course, it is also possible to wait above the snow eaves 2a and 12a and cut the snow eaves c from the top to the bottom. In this case, winches 5, 5a, 15, 1
This can be easily carried out by simply reversing the operation in step 5a. Further, in the first and second embodiments, the rope guide b is composed of the poles 3, 13, guide rollers 4, 14, and wire ropes 6, 16, but the rope guide b may be modified as appropriate if the mechanism allows the rope to be moved in the vertical direction. Of course, it is possible.

Since the present invention is as described above, it exhibits the following effects.

First, a rope a, which can be raised and lowered freely via a rope guide b, is vertically moved by the operation of a lifting device, and a rope a is interposed in a horizontal direction at the base of the snow eaves c to lower it. This is an excellent snow eaves processing method, since the cutting process is performed from above upwards, so that a wider and medium-sized snow eave c can be cut immediately and reliably while the rope a is being moved in a relatively small vertical direction.

However, since the vertical movement of rope a can be easily performed on the ground, there is no need for workers to take the risk of climbing up to the roof to clear the snow eaves, which is an extremely safe way to clear the snow eaves. It becomes law.

Furthermore, by vertically moving the rope a installed in the horizontal and middle directions, it is possible to cut the wide and medium-sized snow eaves c at once.The structure and installation are simple, and all that is required is the rope a, its rope guide b, and a lifting device such as a winch. This makes it an inexpensive device.

Second, it is possible to cut the snow eaves C from the bottom to the top by intervening the rope a in the lateral and middle direction at the bottom of the eaves c, so the rope a intervenes at the bottom of the eaves c and cutting from below. Since the cut snow eaves c cannot withstand their own weight and fall after being cut to a certain extent, a more efficient and complete snow eaves cutting process is possible.

In this way, it is possible to safely and quickly cut off the snow eaves c that have formed at the entrances and exits of the avalanche protection cover over a wide area using the thin cutting rope a, thereby eliminating the drawbacks of the conventional methods for treating snow eaves of this type. This will promote improvements in processing efficiency, capacity and safety, reduce traffic stoppages during snow removal work, and facilitate smoother traffic flow during the winter.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIGS. 1 and 2 are overall perspective views, and FIG. 3 is a front view. a...Rope, b...Rope guide,
c... Snow eaves. Figure 2: Ship Figure 3

Claims (1)

[Claims] 1. A rope installed in the width direction of the entrance via a rope guide so that it can be raised and lowered is moved vertically from bottom to top by the operation of the lifting device, and the rope is cut up from bottom to top in the width direction below the base of the snow eaves. A method for cutting avalanche protection covers and snow eaves at entrances and exits of tunnels, etc., which is also characterized by cutting.