JPH06108700A - Safety cover for lift post with ladder - Google Patents

Abstract

PURPOSE:To ensure impact resistance under low temperature or flexibility by covering the peripheral surface of a lift post with a ladder with a safty cover, and covering ribs, bolts, etc., projected from the foundation of the post to maintain safety of skiers even in the case of less snowing. CONSTITUTION:The peripheral surface of a lift post 6 except part of a ladder 4 is covered, and a plurality of leaf springs bringing the front end into contact with the peripheral surface of the post 6 are combined with main panels 8 on the circumference. After that, auxiliary panels 10 covering a part of the ladder 4 of the lift post 6 in double swinging system capable of opening and closing are connected to the main panels 8. At that time, the main panels 8 and auxiliary panels 10 are manufactured of bridge formation polynoboane resin. The perimeter of a reinforced rib projected to the foundation of the lift post 6 is covered with an anchor panel 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety cover for a lift column with a ladder used in a ski resort, and more particularly, it has excellent impact resistance and flexibility at low temperatures and can be easily used when necessary. The present invention relates to a safety cover for a lift column with a ladder that can use a ladder for the.

[0002]

2. Description of the Related Art There is no end to accidents in which a skier crashes into a lift pillar of a ski resort and is injured. Therefore, in each ski area, (1) snow is piled up on the lower part of the lift column, (2) a foam mat is wrapped, (3) an air mat is wrapped, and (4) around the lift column. Make a gap with a spacer and cover it with a net, (5)
For example, by stretching the net around the lift column in a conical shape,
Various measures are adopted for shock absorption.

However, the method (1) of stacking snow is uneconomical because the snow at the bottom of the lift column is easily blown away by the wind, and the stacking operation is frequent. (2)
However, since the foamed mat absorbs water and increases its weight, it is difficult to adjust the mounting position up and down according to changes in the amount of snow. If the mat's mounting position is not corrected in response to an increase in the amount of snow, wind pressure will cause the area around the mat to become like a skirt, impairing safety. Moreover, the mat must be removed during the off-season due to aesthetic issues.
In the air mat of (3), the stock is often pierced to cause puncture or air leakage. The methods of stretching the net in (4) and (5) have problems such that the skier is easily caught on the net, and moreover, the spacer collides, the maintenance frequency is high, and the vertical position is difficult to correct.

By the way, there are two types of causes of fatal injury to skiers due to lift props: crash into props and catch on props or foundation parts (anchors, reinforcing ribs), ladders, shock absorbing covers, etc. It can be roughly divided. Therefore, it is desired that the safety cover for the lift column be made of a material and a shape that effectively absorbs the impact at the time of a collision, and is hard to be caught by the tip of the ski or the body of the skier, and is slippery. In addition, it is easy to correct the upper and lower positions according to the amount of snow, does not impair the aesthetics even if it is not removed during the off-season, has excellent weather resistance and durability, and is easy to disassemble when removing. ,And,
Many characteristics are desired, such as being lightweight, having a small bulk when stored, and being inexpensive.

However, conventional safety covers for lift columns are insufficient in terms of safety, appearance, weather resistance, durability, and workability (installation, removal, vertical movement, etc.). Therefore, as shown in JP-A-2-253,023, a safety cover made of a polynorbornene resin has been developed.

[0006]

However, in the safety cover disclosed in this publication, the case where the lift column is provided with a ladder is not specifically considered, and the cover of the ladder part is a problem. there were. In addition, in the basic part of the pillar,
Although ribs, bolts, and nuts are provided so as to project, a safety cover that covers the ribs, bolts, and nuts of this basic portion has not been developed in the conventional safety cover. The base of the stanchion is
It is safe to hide under the snow and is invisible, but there was a risk of collision for skiers when there was little snowfall.

The present invention has been made in view of the above circumstances, and covers the outer periphery of a lift column with a ladder without impairing its aesthetic appearance, and is excellent in impact resistance and flexibility at low temperatures,
Effectively mitigating the impact force at the time of a skier's collision,
It is a first object of the present invention to provide a safety cover for a lift column with a ladder that can be easily used without removing the entire cover even when using a ladder. A second object of the present invention is to provide a safety cover for a lift column with a ladder that covers the ribs, bolts and nuts that project from the base of the column and is excellent in safety even when there is little snowfall. .

[0008]

In order to achieve the above object, a safety cover for a lift column with a ladder according to the present invention covers the periphery of the lift column other than the portion where the ladder is provided, and is provided on the outer peripheral surface of the column. It has a main panel with a plurality of leaf-shaped spring parts, whose tips abut against each other, which are integrally provided on the inner peripheral surface, and an auxiliary panel which is connected to the main panel and covers the ladder part of the lift column in a double-opening manner. However, the main panel and the auxiliary panel are each made of a crosslinked polynorbornene-based resin. The safety cover further has a reinforcing rib protrudingly provided on the base portion of the lift column, and an anchor panel covering the periphery of the bolt and the nut, and the anchor panel is made of a crosslinked polynorbornene resin. desirable.

[0009]

In the cover for the lift column with ladder of the present invention, the periphery of the lift column other than the portion where the ladder is provided is covered with the main panel integrally provided with the leaf-shaped spring portion on the inner peripheral surface. Since this main panel is made of cross-linked polynorbornene resin, it has excellent impact resistance and flexibility at low temperatures, and even if the skier collides, the leaf-shaped spring portion bends, causing collision. The impact force at the time can be effectively mitigated. Further, it has a function of moving the skier in a safe direction when the tip of the ski or the body of the skier is hard to be caught and when the vehicle collides from a position other than the front.

In addition, when the ladder provided on the lift column is used for regular inspection or the like, by opening the auxiliary panels on both sides, the ladder can be used without removing the entire cover.

Further, if the reinforcing ribs, bolts and nuts projecting from the base of the lift column are covered with an anchor panel made of polynorbornene resin, even if there is little snowfall. Safe for skiers, with no exposed reinforcement ribs, bolts and nuts. It is also preferable in terms of appearance.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings. FIG. 1 is a perspective view showing a use state of a safety cover for a lift column with a ladder according to an embodiment of the present invention, FIG. 2 is a front view and a side view of a main panel used in the same embodiment, and FIG. 3 is a main panel and an auxiliary. FIG. 4 is a schematic perspective view showing an example of connecting with a panel.
5 is a perspective view showing a cover mounting structure of the embodiment, FIG.
Is a perspective view of an anchor panel assembled, FIG. 6 is a schematic view of a support base portion to which the anchor panel is attached,
FIG. 7 is a schematic view showing a method of attaching the anchor panel.

As shown in FIG. 1, a safety cover 2 according to an embodiment of the present invention is a cover for covering a lower portion of a lift column 6 having a ladder 4, and includes a plurality of main panels 8 and
It has a plurality of auxiliary panels 10 connected to the main panel 8. As shown in FIG. 2, the main panel 8 has a plurality of holes 12 formed at appropriate intervals.
The leaf-shaped spring portion 14 is integrally formed on the top of the. The leaf-shaped spring portion 14 has a convex leaf spring shape, but the shape of the leaf-shaped spring portion 14 is not limited to this, and one end of the leaf spring portion is cut from the panel,
Alternatively, it is possible to make various modifications such as a shape in which the leaf spring portions are crossed. In addition, the hole 12 and the leaf-shaped spring portion 1
The installation location and the number of 4 can be variously modified. Further, the shape of the hole 12 can be various shapes such as a horizontally long rectangle and a circle, other than the vertically long rectangle. Although the auxiliary panel 10 is formed of a material having excellent impact resistance in cold weather, it may have a strong impact depending on the direction due to the projection of a ladder. Therefore, the surface of the auxiliary panel 10 on the ladder side is made of polyurethane. A cushioning material such as may be adhered.

The main panel 8 having the leaf-shaped spring portion 12 can be integrally formed by reaction injection molding (RIM) using a norbornene-based monomer, as described later. The auxiliary panel 10 can also be integrally formed by reaction injection molding (RIM) using a norbornene-based monomer, as described later.

A plurality of main panels 8 are connected according to the size of the pillar 6. Then, as shown in FIGS. 3 and 4, the auxiliary panel 10 is connected to one end of the connected main panel 8 to form the cover structure 19. The main panels 8 are connected to each other or the main panel 8 and the auxiliary panel 10 are connected to each other by, for example, fixing the rivets 16 by the riveter 18. Alternatively, other means may be used.

The main panel 8 and the auxiliary panel 10 are shown in FIG.
In order to attach to the support column 6 shown in FIG. 1, the cover structure 1 in which the auxiliary panel 10 is connected with the rivets 16 or the like to one end of the main panel 8 connected with the rivets 16 or the like to the required length
Prepare a pair of 9. Next, this pair of cover components 19
As shown in FIG. 4, the belt 20 is passed through the leaf-shaped spring portion 14 formed on the inside of the auxiliary panel 10,
The cover structure 19 is temporarily fixed to the column 6 so that both ends of 10 are butted, and the auxiliary panels 10 and 10 are located on the ladder 1 side. Belt 20
The ladder 4 and the ground wire (not shown) are configured to pass through.

Next, the butting portions of the auxiliary panels 10 and 10 are positioned so that they are located at the intermediate position of the ladder 4,
The belt 20 is tightened so that the top of the leaf-shaped spring portion 14 abuts on the outer periphery of the column 6 and the ends of the main panels 8 and 8 are butted against each other. At this time, since the main panel 8 and the auxiliary panel 10 are made of polynorbornene-based synthetic resin, the main panel 8 and the auxiliary panel 10 are bent conveniently along the outer circumference of the support column 6.

The abutting portions of the auxiliary panels 10 and 10 may then be connected so as to be openable and closable by using a fixing belt such as an Insulock. When using the ladder 4 for inspection of the lift, etc., open both auxiliary panels 10 and 10,
By hooking its end behind the ladder 4, the cover 2
The ladder 4 can be easily used without removing the whole. When the use of the ladder 4 is finished, the ends of the auxiliary panels 10 and 10 may be butted against each other and connected by a simple connecting means. Even if they are not connected to each other, the abutted state can be maintained by the elastic force of the panel.

In an area where a lot of snow falls, as shown in FIG.
The safety cover 2 can be configured as two or more stages along the safety cover 2.

Further, as shown in FIG. 1, an anchor panel assembly 30 is installed below the safety cover 2 composed of the above-mentioned cover structures 19 and 19 so as to be connected thereto. As shown in FIG. 6, the anchor panel assembly 30 has a shape that covers all of the foundation 36 and the reinforcing ribs 34 of the column 6. This panel assembly 30 is shown in FIG.
As shown in 7, curved corner anchor panel 3
2a and a flat plate-shaped connecting anchor panel 32b, which are connected by rivets or screws so that an opening 35 is formed in part.

When the panel assembly 30 is attached to the base portion of the column 6, as shown in FIG. 7, the elasticity of the panel assembly 30 is utilized to widen the opening 35 from which the column 6 is assembled. It attaches so that it may enter in the solid body 30.
Then, the belt 34 is wound around the ends of the panels 32 a, 32 a located in the opening 35, and the panel assembly 30 is fixed to the base portion of the column 6.

Panels 8, 10, 32a, 32b described above
Is composed of a well-known polynorbornene-based synthetic resin obtained by polymerizing dicyclopentadiene, dihydrodicyclopentadiene, tetracyclododecene, tricyclopentadiene and the like. That is, dicyclopentadiene,
A polynorbornene-based resin obtained by bulk ring-opening polymerization of a norbornene-based monomer typified by methyl tetracyclododecene in a mold in the presence of a metathesis catalyst system is excellent in heat distortion resistance and mechanical strength. Not only the impact resistance at room temperature is high, but also the impact resistance, elastic modulus, flexibility, etc., are small even at low temperatures, and a large-sized molded product can be easily molded by the RIM method, which is inexpensive. A preferable polynorbornene-based resin has a glass transition temperature (Tg) of 100 ° C., and has a small amount of elastomer whose impact resistance is modified.

The norbornene-based monomer is preferably a tricyclic compound or more, and a polymer having a high heat distortion temperature can be obtained. The bulk ring-opening polymerization of norbornene-based monomers produces a solvent-insoluble crosslinked polymer, but in order to increase the degree of crosslinking of the polymer, at least 10% by weight, preferably 30% by weight or more of the total monomers are used. It is preferable.

Examples of the norbornene-based monomer include 2-norbornene, 5-methyl-2-norbornene, 5-ethylidene-2-norbornene, 5-phenyl-2-norbornene and other bicyclic norbornene-based monomers, and dicyclopentadiene. Tricycles such as dihydrodicyclopentadiene, tetracycles such as tetracyclododecene, pentacycles such as tricyclopentadiene, heptacycles such as tetracyclopentadiene, alkyl substitution products thereof (for example, Methyl, ethyl, propyl, butyl substitution, etc.), alkylidene substitution (eg, ethylidene substitution, etc.), aryl substitution (eg, phenyl, tolyl substitution, etc.) and the like.

On the other hand, the crosslinkable monomer is a polycyclic norbornene type monomer having two or more reactive double bonds, and specific examples thereof include dicyclopentadiene, tricyclopentadiene and tetracyclopentadiene. Therefore, when the norbornene-based monomer and the crosslinkable monomer are the same, it is not necessary to use another crosslinkable monomer. These norbornene-based monomers may be used alone or in combination of two or more.

Bicyclic rings such as 2-norbornene, 5-methyl-2-norbornene, 5-ethylidene-2-norbornene and 5-phenyl-2-norbornene which can be ring-opening polymerized with one or more of the above norbornene-based monomers. A norbornene-based monomer, a monocyclic cycloolefin such as cyclobutene, cyclopentene, cyclopentadiene, cyclooctene, and cyclododecene can be used in combination within a range not impairing the object of the present invention.

Like the auxiliary panel 10, the assembly panel 30 is also expected to receive a strong impact such as a point impact by the bolts and the foundation 36. Therefore, it is more preferable to stack the foam on the inside of the assembly panel 30 as in the case of the auxiliary panel 10.

Hereinafter, more specific examples of the present invention will be specifically described, but the present invention is not limited to these examples. Parts and% are based on weight unless otherwise specified. Example 1 Phenolic antioxidant (trade name: Irganox 101)
0, manufactured by Ciba-Geigy Co., Ltd.) in a proportion of 2% [that is, dicyclopentadiene (DCP) 85%
And 15% of methyltetracyclododecene] in two containers, one containing 100 parts of the monomer mixture with diethylaluminum chloride (DEAC) at 0.
4 parts, 0.15 parts of n-propanol, 0.36 parts of silicon tetrachloride, and 6 parts of a styrene-isoprene-styrene block copolymer (Kreton 1170, manufactured by Shell Co.) were added (solution A). On the other hand, 0.3 part of tri (tridecyl) ammonium molybdate was added to 100 parts of the monomer mixture (solution B).

Liquids A and B were respectively sent to a power mixer by a gear pump so as to have a volume ratio of 1: 1 and then, in a space of a mold formed by a convex mold and a concave mold, Injection was performed at a mold temperature of 70 ° C. The reaction was carried out in the mold for 3 minutes. These series of operations were performed under a nitrogen atmosphere. A plate-shaped molded body having a length of 800 mm × width of 880 mm × thickness of 2.5 mm shown in FIG. 4, having five holes each having a width of 50 mm and a length of 150 mm, each having a width of 45 mm and a height of 100 mm. A main panel as a molded body obtained by integrally molding the leaf-shaped spring portion of was obtained. Further, a panel constituting an auxiliary panel and an anchor panel assembly was obtained by the same method except that the mold was changed to change the shape.

The heat distortion temperature of the obtained molded body is 140 ° C.
(JIS K-6911, load 8.5 kg), specific gravity is 1.04 g / cm ³ , bending elastic modulus of the plate-shaped molded body is 190 kg / mm ² (JIS K-7203), Izod impact strength is 30 kg.・ Cm / cm [JIS K
-7110 6.5 (with a notch)], and has rigidity and flexibility, is lightweight, and is excellent in heat resistance and impact resistance.

By combining these panels, a safety cover 2 as shown in FIG. 1 was assembled. The panels were easily bendable and did not crack. Further, when a load was applied and pushed, the leaf-shaped spring portion was deformed, and it functioned as a leaf spring.

[0032]

The safety cover for a lift column with ladder of the present invention is excellent in impact resistance and flexibility at low temperatures, and the leaf-shaped spring portion exhibits a cushioning effect to effectively protect the impact in the event of a collision. In addition to relaxing, the ski tip and the body of the skier are hard to be caught, and when the vehicle collides from a position other than the front, the skier is moved in a safe direction.

In addition, when the ladder provided on the lift column is used for regular inspection or the like, by opening the auxiliary panels on both sides, the ladder can be used without removing the entire cover.

Further, if the reinforcing ribs protrudingly provided on the base of the lift column are covered with an anchor panel made of polynorbornene resin, the reinforcing ribs can be provided even when there is little snowfall. Safe for skiers without exposure. It is also preferable in terms of appearance.

[Brief description of drawings]

FIG. 1 is a perspective view showing a usage state of a safety cover for a lift column with a ladder according to an embodiment of the present invention.

FIG. 2 is a front view and a side view of a main panel used in the embodiment.

FIG. 3 is a schematic perspective view showing an example of connecting a main panel and an auxiliary panel.

FIG. 4 is a perspective view showing a cover mounting structure of the embodiment.

FIG. 5 is a perspective view of an anchor panel in an assembled state.

FIG. 6 is a schematic view of a column base portion to which an anchor panel is attached.

FIG. 7 is a schematic view showing a method of attaching the anchor panel.

[Explanation of symbols]

 2 ... Safety cover 4 ... Ladder 6 ... Strut 8 ... Main panel 10 ... Auxiliary panel 14 ... Leaf-shaped spring part 16 ... Rivet 19 ... Cover structure 20 ... Belt 30 ... Anchor panel assembly 32a ... Corner anchor panel 32b ... Connection Anchor panel

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[Procedure amendment]

[Submission date] December 28, 1992

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0022

[Correction method] Change

[Correction content]

Panels 8, 10, 32a, 32b described above
Is composed of a well-known polynorbornene-based synthetic resin obtained by polymerizing dicyclopentadiene, dihydrodicyclopentadiene, tetracyclododecene, tricyclopentadiene and the like. That is, dicyclopentadiene,
A polynorbornene-based resin obtained by bulk ring-opening polymerization of a norbornene-based monomer typified by methyl tetracyclododecene in a mold in the presence of a metathesis catalyst system is excellent in heat distortion resistance and mechanical strength. Not only the impact resistance at room temperature is high, but also the impact resistance, elastic modulus, flexibility, etc., are small even at low temperatures, and a large-sized molded product can be easily molded by the RIM method, which is inexpensive. Preferred polynorbornene-based resins have a glass transition temperature (Tg)
The impact resistance is modified at 100 ° C. or higher with a small amount of elastomer.

Claims (2)

[Claims] 1. A safety cover for preventing a skier from directly colliding with a lift column with a ladder used in a ski resort, which covers the periphery of the lift column other than the portion where the ladder is provided. , A main panel integrally provided on the inner peripheral surface with a plurality of leaf-shaped spring parts whose tips come into contact with the outer peripheral surface of the pillar, and by connecting to this main panel, the ladder portion of the lift pillar can be opened and closed in a double-opening manner. A safety cover for a lift column with a ladder, which has an auxiliary panel for covering, and the main panel and the auxiliary panel are each made of a crosslinked polynorbornene resin. 2. The anchor panel that covers the periphery of a reinforcing rib provided on a base portion of the lift column, the anchor panel being made of a crosslinked polynorbornene-based resin. Safety cover for the lift column with ladder.