JP3101911U - Wrench for equipment inspection - Google Patents

Abstract

A wrench for inspecting equipment suitable for performing maintenance work on related equipment attached to a track has sufficient mechanical performance, is small and lightweight, is easy to carry, and realizes labor saving in maintenance work. The purpose was to do.
A wrench for inspecting equipment according to the present invention includes an integral reinforcing core material 1 formed of a steel plate and embedded in a light alloy body 2, and the reinforcing core material is provided on an inner wall surface of a spanner opening 1a. The surface is exposed, characterized in that the reinforcing core material is preferably made of carbon steel or carbon tool steel for machine structure, furthermore, the reinforcing core material, Those in which at least a part of the end face has undergone a curing treatment are particularly excellent.
[Selection diagram] Fig. 1

Description

  The present invention relates to a spanner suitable for being carried and used for maintenance and inspection of track-related equipment such as a track branching device and a signal security device in a railway.

  Conventionally, various related equipment installed alongside a railroad track includes a track branching device and a signal security device.These devices receive an impact each time a heavy vehicle travels on the track. When exposed to vibration, the bolts that connect the members that make up each device are likely to loosen, and if the bolts for mounting each device are loose, the running of the vehicle may be hindered. Therefore, careful patrol inspections are indispensable for track maintenance work, but there are many types of bolts for track-related equipment, and traveling with a wrench to tighten these bolts requires a lot of labor. It has become.

  However, in order to reduce the labor of such track maintenance work, it is considered effective to reduce the weight of tools to be carried, but spanners are usually made of forged steel or the like. However, it has been considered difficult to reduce the weight while maintaining the performance.

  The present invention is a tool for performing maintenance work on related equipment attached to a track in railway equipment, which has sufficient mechanical performance, is small and lightweight, is easy to carry, and is useful for maintenance work. The purpose of the present invention is to provide a wrench for checking equipment which can save labor.

  The wrench for checking equipment of the present invention has an integral reinforcing core made of a steel plate embedded in a light alloy body, and the surface of the reinforcing core is exposed on the inner wall surface of the spanner opening. It is characterized by.

  And in such a device inspection spanner of the present invention, the reinforcing core is preferably made of carbon steel or carbon tool steel for machine structure, and further, the reinforcing core is the If at least a part of the end face has been subjected to a curing treatment, a spanner having particularly excellent durability can be obtained.

  In addition, the light alloy is preferably an aluminum alloy in terms of economy and light weight. Further, when the aluminum alloy is strengthened by heat treatment, it is more advantageous in terms of strength. is there.

  Further, in the device inspection wrench of the present invention, if an insulating coating is provided on at least a part of the outer surface, occurrence of an accident due to a short circuit of an electric signal can be suppressed, or an accident such as an unexpected electric shock can be prevented. It has the advantage of being effective.

  The device inspection wrench of the present invention can be significantly reduced in weight without impairing the practical folding strength, so that it is easy to carry, reducing the burden on workers during maintenance work, etc. This has the effect of being easy and reliable and of improving the reliability of the construction itself. In addition, since the spanner is lightweight, the probability of accidents such as injuries due to removal is reduced, safety is greatly improved, and maintenance work efficiency is increased, so that overall equipment maintenance costs can be reduced. The effect is obtained.

  The device inspection wrench of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the examples disclosed in these drawings, and various modifications may be made without departing from the gist of the present invention. It is intended to include implementation with modification.

  FIG. 1 shows a first example A of a wrench for inspecting equipment of the present invention, and FIG. 1A is a front view showing a state in which a part of the wrench is cut out to expose a reinforcing core 1. FIG. 1B is a cross-sectional view of the spanner A at the XX position. FIG. 2 is a side view thereof. The reinforcing core material 1 used in this example is cut out of a structural carbon steel plate having a thickness of, for example, 6 mm, and has a wrench opening 1a that is compatible with a nut at one end, and a part of the peripheral wall for holding the posture. The projection 1b is provided.

  In the reinforcing core 1 thus prepared, the spanner opening 1a of the reinforcing core 1 is fitted into a wrench opening engaging portion formed on the inner wall of the spanner casting mold, and at the same time, the posture holding projection 1b is moved right and left. Was temporarily fixed in the mold so as to be sandwiched by a part of the mold. After that, a casting aluminum alloy melt such as AC2A, AC4A, AC5A or the like is injected into a space surrounding the reinforcing core 1 in the mold, and the reinforcing core 1 is embedded in the light alloy body 2. The spanner was cast.

  After the cast product thus manufactured was released from the mold, the portion 1b for holding the posture was cut off, and the inner surface of the spanner opening was finished flat. If necessary, a heat treatment or the like for increasing the strength of the light alloy body 2 and a hardening treatment on the inner surface of the spanner opening 1a of the reinforcing core material 1 may be performed, so that the device inspection spanner A of the present invention is used. Was manufactured.

  In the wrench of the present invention thus obtained, a reinforcing core 1 is embedded so as to penetrate at least into a shaft portion formed of a light alloy, and one end of the reinforcing core 1 is provided on an inner side surface of the spanner opening. Because the inner surface of the wrench opening 1a is exposed, not only does it have a large bending strength, but it also causes deformation of the inner surface of the wrench opening that occurs when a hex bolt is fitted into the wrench and tightened. Wear and the like can be effectively suppressed.

  In this way, when the spanner of the present invention having a nominal size of 20 mm and a tightening torque of 500 Nm was manufactured, the weight of the spanner was about 3 times that of a commercially available steel spanner of the same nominal size. / 5.

  Further, the wrench of the present invention was provided with an insulating coating layer of epoxy resin on the outer surface of the wrench opening to manufacture a high-insulation wrench for inspecting equipment. In addition, by applying powder coating of polyamide resin instead of epoxy resin, a similar high-insulation wrench for inspecting equipment could be obtained.

  FIG. 3 shows an example of an attached handle B which is used when tightening or loosening using the equipment inspection spanner A of the present invention. The attached handle B is manufactured using a steel pipe or the like having an oval insertion opening in cross section, and preferably has an outer surface provided with a synthetic resin insulating layer or the like. The spanner A of the present invention having such an attached handle B inserted therein has a form as shown in FIG.

  FIG. 5 shows a second example C of the device inspection spanner of the present invention. FIG. 5A is a front view showing a state in which a part of the spanner is cut out to expose the reinforcing core 1. FIG. 5B is a cross-sectional view of the spanner C at the YY position. FIG. 6 is a side view of the wrench C. The wrench C of this embodiment is different from the wrench A of the first embodiment in that the wrench A has one side and the wrench C has two sides.

  However, basically, the reinforcing core 1 is temporarily fixed in the mold so as to leave a gap surrounding the reinforcing core 1 inside the spanner casting mold, and a light alloy of light alloy is placed in the gap. It is possible to manufacture a spanner in which the reinforcing core material 1 is embedded in the light alloy body 2 by casting the molten metal, casting the post, and holding the posture maintaining protrusion 1b, and finishing the inner surface of the spanner opening flat. This is exactly the same as the case of the device inspection spanner A of the present invention.

  The thus-obtained device inspection wrench of the present invention has the features that it is strong, small, lightweight, excellent in portability, excellent in handling, and high in work safety. Is what it is.

  The wrench of the present invention is particularly advantageous for checking track-related equipment during maintenance work on railway-related equipment, and also includes tools mounted on moving vehicles such as four-wheeled vehicles and two-wheeled vehicles, and household appliances and other equipment. It can be used in many fields as a tool to be carried at the time of repair service for, taking advantage of its light weight and handleability.

FIG. 3A is a front view showing an example of a wrench for inspecting equipment of the present invention (Example 1), in which FIG. It is sectional drawing in the XX position in said (a). It is a side view of the said spanner. It is an external view which shows the example of the attached handle used when performing retightening or loosening in combination with the spanner of Example 1 above. It is an external view which shows the state which combined the spanner of the said Example 1, and the said attachment handle. FIG. 5A is a front view showing a state in which a part of the spanner for inspecting equipment of the present invention (Example 3) is cut out to expose a reinforcing core material, and FIG. () Is a cross-sectional view at the YY position in (a). It is a side view of the said spanner.

Explanation of reference numerals

A Spanner of Example 1 B Supplied handle C Spanner of Example 3 1 Reinforcing core material 1a Spanner opening 1b Posture for maintaining posture 2 Light alloy body

Claims (6)

  A wrench for inspecting equipment, wherein an integral reinforcing core formed of a steel plate is embedded in a light alloy body, and the surface of the reinforcing core is exposed on an inner wall surface of a spanner opening. .   The spanner for inspecting equipment according to claim 1, wherein the reinforcing core is made of carbon steel for machine structure or carbon tool steel.   The wrench for inspecting equipment according to claim 1 or 2, wherein the reinforcing core has at least a part of an end face subjected to a hardening treatment.   The wrench according to any one of claims 1 to 3, wherein the light alloy is an aluminum-based alloy.   The spanner for inspecting equipment according to claim 4, wherein the aluminum-based alloy is strengthened by heat treatment.   The wrench for inspecting equipment according to any one of claims 1 to 5, wherein an insulating coating is provided on at least a part of the outer surface.

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