RU2364534C1 - Support with bearing surface for slalom on hover platform - Google Patents

Abstract

FIELD: mechanical engineering.

SUBSTANCE: invention refers to hovercraft. Support with bearing surface for slalom on hover platform characterised in that box (1) of footing with bearing surface (2) is suspended on longitudinal cables (9, dwg. 2) and transverse cables (12, dwg. 3 and 4) or rests on them. Cables (9) and (12) are fixed in stands (10) with possibility to adjust cable tension. Relative layout of cables (9) and (12) creates bearing network structure of preset curvature in accordance with longitudinal and transverse profiles of slalom course. To side walls of box (1) air ducts (11, dwg. 2-4) of flexible material adhere which ducts communicate with box inner space. Fans supplying air to box (1) are driven by thermal engines. Exhaust manifolds of thermal engines feature branch lines to direct combustion products together with outdoor air into box (1) during atmospheric precipitation at low temperatures. Quantity of combustion products and air being directed into the box is adjusted depending on precipitation rate and air temperature.

EFFECT: intended for active rest and sport.

4 cl, 4 dwg

Description

The invention relates to vehicles on an air cushion and is intended for outdoor activities and sports, mainly for slalom or downhill skiing on a non-motorized platform on an air cushion.

Known invention, which can be taken as a prototype [1]. In this device, a support with a bearing surface for moving a non-motorized platform on an air cushion along it is made in the form of a hollow box, in the flat bearing surface of which automatic valves are integrated to allow air through them to be pumped into the interior of the support by stationary fans. When the platform moves with a person or a load above the bearing surface, the valves automatically open when the platform is above them. Air through the valves leaves the box up and enters the space between the bearing surface and the bottom of the platform. The resulting air cushion holds the platform with the person above the bearing surface. The valves automatically close as soon as the platform leaves the given place. Thus, an air cushion accompanies the platform everywhere, no matter in which part of the bearing surface the platform is.

The disadvantages of the prototype. The installation of a support with a bearing surface in order to use it for slalom or downhill descent requires the creation of a certain longitudinal and transverse track profiles. Intervention in the terrain will violate the integrity of the soil and vegetation, will change the natural ways of rainfall runoff. This will create conditions for the appearance of landslides and mudflows.

The length of the bearing surface for slalom or downhill can reach many hundreds of meters. Therefore, when air is supplied to distant sections of the support, significant pressure loss is possible inside the support with a bearing surface.

During precipitation at low temperature, the bearing surface may be covered with snow and ice, which will complicate its operation.

The aim of the invention is to develop such a support with a bearing surface for slalom or downhill on a platform on an air cushion, which would allow to build it with minimal damage to the natural landscape. In addition, the aim of the invention is to reduce the loss of air pressure in its path from the fans to the valves of the bearing surface. It is also important to increase the safety of operation and the operability of the support with a bearing surface, including at negative air temperature.

The purpose specified in the invention is achieved by the fact that the support box with the bearing surface is suspended on or supported by longitudinal and transverse ropes, the ropes are mounted on racks with the ability to adjust the tension of the ropes, while the relative position of the ropes forms a supporting mesh structure of a given curvature in accordance with the longitudinal and transverse profiles of the bearing surface for slalom.

Air ducts of flexible material are adjacent to the lateral sides of the support box with the bearing surface, the air ducts communicate with the interior of the support box with the bearing surface, while the sides of the air ducts facing the bearing surface are made of a material with a low coefficient of friction.

The fans that supply air to the support box with the bearing surface are driven by heat engines, the exhaust manifolds of which are made with bends for directing the products of fuel combustion during atmospheric precipitation at low temperature inside the box together with atmospheric air, while the amount of combustion products and air directed inward support boxes with a bearing surface, adjust depending on the intensity of precipitation and air temperature.

The bottom and side walls of the support box with the bearing surface, as well as the air ducts are made insulated.

Figure 1 shows a part of a support with a bearing surface (2) for slalom on a platform on an air cushion. (1) - a support box with a bearing surface (2); (3) - an automatic valve, (4) - the inner space of a support with a bearing surface, (5) - a pipe for communicating the valve (3) with the atmosphere, (6) - a flexible sheet at the top of the support with a bearing surface, (7) - a flexible sheet in the bottom of the support with a bearing surface.

Figure 2 shows a General view of the support with a bearing surface. (9) - a longitudinal bearing rope under a support with a bearing surface, (10) - a rack for ropes, (11) - an air duct.

Figure 3 shows the cross-section of the support (across the track) with the bearing surface for the case when the box (1) of the bearing with the bearing surface (2) rests on the ropes. (12) - transverse support rope under the bottom of the box (1) supports with a bearing surface (2); (13) - anchor, (14) - lanyard.

Figure 4 shows a cross section of a support with a bearing surface for the case when the box (1) is not supported, but suspended on the transverse ropes (12) and longitudinal ropes (9, Fig. 3).

A support with a bearing surface for slalom on a platform on an air cushion consists of a box (1, Fig. 1), in which automatic valves (3) and pipes (5) are installed. Valves (3) with pipes (5) rest on the bottom of the box (1). Air with a pressure above atmospheric is supplied to the inner space (4) of the support with a bearing surface (2) using stationary fans (not shown). When the valves (3) are opened, the air leaves the box (1) up (Fig. 2) and holds the platform (8) with a person on the air cushion (Figs. 2-4).

To install supports with a bearing surface, racks (10) and anchors (13) (Figs. 2-4) are installed on both sides of the track for slalom or downhill. On the uprights (10), longitudinal ropes (9) and transverse ropes (12) are fixed. The ends of the ropes are fixed on the anchors (13). The relative position of the longitudinal ropes (9) and transverse ropes (12) in the plan can be either perpendicular to each other, or at an angle. Thus, the cells in the grid of ropes can be rectangular or diamond-shaped. The tension of the ropes (9 and 12) is performed by lanyards (14) so that they form a mesh structure of a given curvature in the transverse and longitudinal sections. The configuration of the track in the plan is determined by the position on the terrain of the racks (10) and anchors (13).

Depending on the size of the track and local conditions, at least two options for mounting the support with a bearing surface are possible. Figures 2 and 3 show an option when the box (1) of the support with a bearing surface (2) is located on top of a grid of ropes (9) and (12). In figure 4, the ropes (9) and (12) are threaded through the top of the box (1) so that the box (1) hangs on a grid of ropes. Due to the flexibility of the top sheet (6) and the bottom sheet (7) of the box (1), the support with the bearing surface (2) can take a curved shape, which forms a mesh structure of ropes (9) and (12).

On the sides of the support with a bearing surface (2) laid ducts (11, Fig.2-4) of flexible material, for example of technical fabric. Ducts (11) perform a dual function. Firstly, they provide additional air supply from the fans to the inside of the support with a bearing surface (2) through openings in the side walls of the box (1) (openings not shown). Thus, one of the goals is achieved - to reduce the loss of air pressure in its path from the fans to the valves (3).

Secondly, the sides of the ducts (11, FIGS. 2-4) facing the support with a bearing surface (2) are made of a material with a low coefficient of friction, for example, polyamide or nylon fabric. To exclude the accumulation of electrostatic charge during friction of the athlete’s clothes on the fabric, the duct material (11) may contain electrically conductive fibers (carbon, metallized, etc.). Thus, the duct (11) simultaneously performs the function of a soft fence support with a bearing surface (2).

During precipitation at low temperature, a layer of snow and ice may form on the bearing surface (2, Figs. 1-4). In order to counter this phenomenon, heat engines, such as diesel engines, are used to drive fans. With snowfall and low temperature, the exhaust gases of diesel engines along with an adjustable amount of atmospheric air are fed into the box (1). Thermotechnical calculations show that the heat of the exhaust gases of the fan drive motors is sufficient for melting snow and ice with an intensity of precipitation of 5-10 mm per day at an air temperature of at least -15 ° C. With more intense precipitation, removal of snow and ice is also possible, but at a lower rate. After removal of sediments, the exhaust gas supply is stopped. Air ducts (11) and the box (1) are purged with atmospheric air. In the case of fan drives using electric motors, the supports with the bearing surface (2) are heated using the heaters built into the air supply system. To effectively use the heat of exhaust gases from engines or air heaters, the side walls and the bottom of the box (1) of the support with a bearing surface (2), as well as air ducts (11), are thermally insulated.

Information sources

1. Patent RU 2271290 C2, IPC B60V 1/100; B60V 3/04 of 04/20/2004.

Claims (4)

1. A support with a bearing surface for moving the platform on an air cushion along it, made in the form of a hollow box, in the bearing surface of which automatic valves are built-in to allow air through them to be pumped into the interior of the support by stationary fans, wherein the box (1) supports with a bearing surface (2) are suspended on longitudinal ropes (9, FIG. 2) and transverse ropes (12, FIGS. 3 and 4), ropes (9) and (12) are mounted on racks (10) with the ability to adjust the tension of the ropes, while imnoe location ropes (9) and (12) forms a mesh structure supporting a predetermined curvature in accordance with the longitudinal and transverse profiles slalom track. 2. A support according to claim 1, characterized in that the ducts (11, FIGS. 2-4) of flexible material are adjacent to the sides of the box (1) of the support with a bearing surface (2), the ducts (11) communicate with the inner space ( 4) boxes (1) of the support with a bearing surface (2), while the sides of the ducts (11) facing the bearing surface (2) are made of a material with a low coefficient of friction. 3. The support according to claim 1, characterized in that the fan drive, supplying air to the box (1, Fig. 1), supports with a bearing surface (2), is carried out by heat engines, the exhaust manifolds of which are made with bends for directing the products of fuel combustion during atmospheric precipitation at low temperature inside the box (1) together with atmospheric air, while the amount of combustion products and air directed into the box (1) supports with a bearing surface (2) is regulated depending on the intensity of precipitation and temperature . 4. A support according to claim 1, characterized in that the bottom and side walls of the box (1, FIGS. 3 and 4) of the support with a bearing surface (2), as well as the ducts (11) are made insulated.

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