JPH0745601Y2 - Sleepers with anti-slip function - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a sleeper with an anti-slip function in which an anti-slip layer is formed on a sleeper used for railroad tracks.

[Conventional technology]

Most of the maintenance work of sleepers is performed at night, and the worker walks on the sleepers for this work. by the way,
At night, it was slippery due to night fog, and in winter it was dangerous because it became slippery due to freezing and frost.

Therefore, in order to prevent slipping, cloth sandpaper was sometimes adhered to the top surface of the sleepers.

[Problems to be solved by the device]

By the way, since sticking sandpaper to sleepers is almost a night work, there is a problem that the upper surface of the sleepers is often wet with night fog, frost, etc. and is not sufficiently adhered.
Moreover, since the thickness of the sandpaper is as thin as about 1 mm, it was worn and peeled off in a short period of time and could not be used for a long time.

In view of the above points, the present invention has an object to provide a sleeper with an anti-slip function in which a non-slip layer is formed on a walking surface in order to ensure the safety of an operator.

[Means for Solving the Problems]

The sleeper with an anti-slip function of the present invention is characterized in that a non-slip layer in which granular materials are adhered with a synthetic resin emulsion type adhesive is formed on at least the walking surface of the main body of the sleeper.

In this invention, the material of the sleeper main body which is subjected to the non-slip processing is not particularly limited, and is made of concrete, wood, synthetic wood (thermosetting resin foam in which long fibers such as glass roving are embedded). Etc. And the walking surface of the sleeper main body is the upper surface of the sleepers laid on the track subgrade, and refers to the tread surface when the worker walks at the time of maintenance and inspection of the sleepers, and is usually The central upper surface of the sleeper between the two rails or the outer upper surface of the rail is the walking surface.

In the sleeper of this invention, in order to form a non-slip layer,
Granules such as silica sand are mixed in advance with a synthetic resin emulsion type adhesive, and this is applied to the walking surface of the sleeper and dried,
Alternatively, it can be formed by applying a synthetic resin emulsion type adhesive to the walking surface of the sleeper, and in the undried state, by spraying a granular material thereon and drying and curing. For both, the process may be repeated multiple times.

The synthetic resin emulsion type adhesive is preferably one using water as a medium, and an acrylic emulsion adhesive,
Emulsion adhesives such as vinyl acetate emulsion adhesive and styrene-butadiene emulsion adhesive are listed, but acrylic emulsion paint, vinyl acetate emulsion paint, emulsion paint such as styrene-butadiene emulsion paint are also synthesized by this invention. It can be used as a resin emulsion type adhesive.

Among these synthetic resin emulsion type adhesives, acrylic emulsion type adhesives are particularly preferably used because they are excellent in weather resistance and abrasion resistance.

The viscosity of the synthetic resin emulsion type adhesive and the mixture of the granular material and the synthetic resin emulsion type adhesive is 500 to 100.
A coating of about 0 cps is particularly suitable because it is easy to apply.

Further, as the granular material, a granular solid material such as a sand grain is used, and for example, silica sand having a granularity of about 0.05 to 2 mm is preferably used.

When the particles are mixed with a synthetic resin emulsion type adhesive and applied to the walking surface of the sleeper body, the mixing ratio of the particles to the synthetic resin emulsion type adhesive is such that the particles are firmly adhered. The larger the range, the better. When the particle size is about 0.1 mm, 30 to 70% by weight of granules can be blended.

Further, as a method of applying the synthetic resin emulsion type adhesive or the synthetic resin emulsion type adhesive mixed with particles to the walking surface of the sleeper main body, various known coating methods can be used. For example, brush coating, roller coating, spray coating and the like.

Since the synthetic resin emulsion type adhesive has good adhesion to the surface wet with water, it can be applied to sleepers before laying in this invention, but the walking surface of sleepers that are easily wet after laying Is preferably applied to.

[Action]

In the sleeper with a slip prevention function of the present invention, a non-slip layer to which a granular material is adhered is formed on the walking surface, the frictional force with the bottom of the shoes is increased to prevent slipping, and the worker can walk safely.
Further, since the particles are adhered by the synthetic resin emulsion type adhesive, the particles are firmly adhered also to the surface of the sleeper which is wet due to night dew or the like.

〔Example〕

 Hereinafter, the present invention will be described with reference to the drawings.

In the drawings, reference numeral 1 denotes a sleeper body made of a hard urethane resin foam in which long fibers such as glass roving are embedded, and a synthetic resin emulsion is provided on a central upper surface portion between the rails 3 of the sleeper body 1. A silica sand is mixed to form an uneven slip prevention layer 2.

This non-slip layer 2 is processed by silica sand No. 5-6 (particle size 0.05
~ 0.1 mm) is mixed with acrylic emulsion at a weight ratio of 1: 1 and applied to the central surface of the sleeper body 1 by brushing at a coating amount of 1.5 kg / m ² for 30 to 60 minutes. After drying (20 ° C.), the same process as above was repeated again. As a result, a non-slip layer having a thickness of about 1.6 mm was formed by the two coating steps, a large number of silica sand 21 was projected on the surface of the non-slip layer to form the uneven anti-slip layer 2, and 3-4 hours after processing It became possible to walk at (20 ℃).

[Effect of device]

Since the sleeper with a sliding function of the present invention has a non-slip layer formed by adhering particulate matter on the walking surface, it does not slip,
Workers can walk safely during maintenance work on sleepers.

Further, since the granular material is formed on the walking surface of the sleeper main body with the synthetic resin emulsion type adhesive, the granular material layer is firmly adhered to the surface of the wet sleeper. Further, since the anti-slip layer is formed only by applying, the anti-slip layer can be easily formed on the walking surface of the sleeper after laying, which is extremely convenient.

[Brief description of drawings]

1 is a perspective view of an example of the sleeper of the invention, FIG. 2 is FIG.
FIG. 11 is a sectional view taken along line II-II. 1 ... Sleeper body, 2 ... Anti-slip layer, 21 ... Silica sand, 3 ...
…rail.

Claims (1)

[Scope of utility model registration request] 1. A sleeper with an anti-slip function, characterized in that at least a walking surface of a sleeper main body is provided with an anti-slip layer formed by adhering particles with a synthetic resin emulsion type adhesive.