DE102007061110A1 - Ski piste processing method for e.g. runway, involves arranging mechanical and/or hydraulic shock absorber and/or compensator between anchor point and ropes to relieve stress peaks or oscillation occurring in ropes - Google Patents

Abstract

The method involves connecting a ski processing vehicle (1) with anchor points (6, 7) by ropes (3, 4), where the anchor points are anchored in ground above a piste region that is to be processed. A mechanical and/or hydraulic shock absorber and/or compensator is arranged between the anchor point and the ropes to relieve stress peaks or oscillation occurring in the ropes, where the anchor points are arranged at the point of a frame towering from a bottom (9). The frame is anchored with a ground anchor in the ground. An independent claim is also included for a device for arrangement between the rope and an anchor point for absorbing peak loads in the rope of a piste processing machine.

Description

The The invention relates to a method and a device for processing Ski slopes.

ski slopes require a complex preparation with corresponding machines, usually chain-driven Machines are used, which provided with Räumschilden are able to modulate a slope contour and also with rear side attached signs a contouring and compaction of snow cover enable. Usually, such runway processing at night carried out.

at Slope handling can happen in steep areas the power transmission of the tracks to the snow, especially during Moving larger amounts of snow, but also in the Spring, when the snow surface is tangling, no more is sufficiently possible. This means that the traction is not enough and the snow machines with their Caterpillar drive buried in the snow and the slope and where appropriate damage the underlying surface.

Around this negative impact of snow grooming machinery on the Underground and avoid the slope itself, were called Winding machines developed in which the Pistenbe processing machine over a winch and a crane arm, which up to over a front-side cab extends over. about the crane arm is guided by the winch a rope, wherein the rope end at an anchor point above the terrain to be worked to be led.

By the control of the winch can extend the rope or be shortened, so that the slope processing machine in addition to the crawler vehicle in the Underground registered force over the rope and the winch can pull up on a slope. This will cause damage the runway and the subsoil, especially on very steep working surfaces and less viable subsoil (volcanic), effectively counteract worked.

Such winching machines for slope processing are offered for example by the company Kässbohrer Geländefahrzeug AG and are widely used. Such is for example also from the DE 100 45 524 A1 known.

In such processing methods ( 4 However, it has proved to be disadvantageous in operation that it occurs relatively frequently that the rope cuts into the terrain contour and in particular in Schneebuckel and is trapped in this terrain contour or in the snow. During movements of the snow groomer here it comes to tensions in the rope, which is discharged when the rope out of the terrain contour, be it by shortening the rope and driving the machine in the direction anchor point or by a transverse movement of the machine and extreme loads in the rope to lead. As a result, on the one hand the life of the rope is shortened, on the other hand, it comes in the already massive trained crane arms as well as in the rotatable shots of the winch and the crane arms on the chassis chassis to considerable loads that lead to breakage and failure of the components or component groups. In particular, it has been found that by the speeding out of the rope considerable longitudinal and transverse vibrations act through the rope on the winching machine.

Of the Applicant has to minimize such damaging influences already developed a system in which the anchor point for the cable of the winch by means of a rack and one under the rack ground anchor anchored in the ground so far in height will that in an area of up to 400 m around an anchor point the rope is guided above the terrain contour, so it's not in the terrain contour and in particular into the snow or piste. With this system could already significant success in terms of lifetime extension of the piste working machines and ropes.

nevertheless can thereby damage the damaging influences, especially in the long range over 400 m away from the anchor point or in areas where the anchor point is in a shallower area is disposed while the winching machine is removed therefrom must work in a steeper area or the terrain has particularly strong contours, can not be excluded.

task The invention is a method for processing slopes by means of To create winch machines, which increases the reliability and reduces the load on the winching machines and ropes used.

The The object is achieved by a method having the features of the claim 1 solved.

advantageous Further developments are characterized in the subclaims.

It is also an object of the invention to provide an apparatus for carrying out the method, which increases the reliability of the use of wind machines and the Belas tion of ropes and used winch machines can be reduced and thus the process can be carried out more effectively and economically.

The The object is achieved with a device having the features of the claim 4 solved.

advantageous Further developments are in the dependent claims characterized.

The inventive method provides on a Anchor point for hooking in the rope of the winch Piste processing machine a mechanical and / or hydraulic To arrange shock absorbers or compensators, wherein the compensator, the occurring in the rope longitudinal vibrations and transversal vibrations and the peak loads in the rope, d. H. between wind machine and anchor point and thus also the wind machine intercept.

The Device according to the invention is a mechanical and / or hydraulic compensator or shock absorber, which is designed so that it exceeds the normal load in the Pistenbetrieb lying impact loads by free-blown Catches ropes and breaks down immediately.

in this connection Different types of devices have proven themselves.

at In a first embodiment, the device comprises springs with different spring constants, preferably a combination from at least one coil spring and at least one plate spring, which are connected in series, is applied.

at a further advantageous embodiment, the Damping hydraulically in the manner of a shock absorber, wherein the hydraulic valves are set to be only open when an overload occurs and corresponding return springs are present to the device to move back to an initial state.

at a third advantageous embodiment, the two aforementioned embodiments by parallel or series connection combined together.

at The invention is advantageous that in a simple, cost-effective and most effectively done a slope editing and in particular the life of the machines involved and facilities is significantly increased.

in this connection the device according to the invention is very robust and cost-effective.

The The invention will be explained in more detail with reference to a drawing. It shows:

1 : a system for snow grooming with the device according to the invention;

2 : the device according to the invention in a schematic longitudinal section in a first embodiment;

3 a second purely hydraulic embodiment of the invention;

4 : An arrangement for slope processing according to the prior art.

In 4 the state of the art is shown. A piste working vehicle 101 has a rotatable winch construction 102 , where a winch rope 103 over a crane jib 104 is led in front of the vehicle front and from there to a point of articulation 106 is guided. At the anchor point 106 is this rope 103 hooked.

In a further advantageous embodiment, which comes from the applicant, in the ground is a ground anchor 107 embedded, being over a scaffold 108 the point of attack 109 for the rope 103 so far moved up that the rope 103 not in a terrain contour 110 cuts. Responsible for this is that the soul axis of the rope 103 above the furthest projecting terrain contour 110 lies. As already stated, this is not always possible with very long ropes, so that cutting in very long ropes is inevitable.

This can happen, for example, if you look like in 1 shown the rope according to the slope slope at which a piste working vehicle 1 stands, presents extended to the left.

In the method according to the invention or the arrangement according to the invention has a known Pistenbearbeitungsfahrzeug 1 a known rotary structure 2 who is on the vehicle 1 is arranged rotatably about the vertical axis and a winch (not shown) comprises. Starting from the winch becomes a rope 3 respectively. 4 via a crane arm device 5 led over the vehicle to the front, with the rope from there free to an anchor point 6 respectively. 7 runs.

In a first advantageous embodiment, the rope runs 3 . 4 from the crane arm device 5 free to an anchor embedded in the ground 7 , wherein between the anchor point located on a ground surface 7 and the rope 4 the device according to the invention 8th is arranged. The device according to the invention 8th is then for example on the ground 9 (Rock, concrete base, etc.), in the anchor too 7 is admitted. In 1 is the device 8th drawn to scale greatly enlarged.

In a further advantageous embodiment, the starting point for a rope 3 or for the device 8th from the ground 9 moved away to the top of the rope 3 . 4 from the terrain contour or on the ground 9 snow layer at least in the vicinity of let loose. In this advantageous embodiment runs from the anchor point 6 an anchor rod 11 to one in the ground 9 arranged anchor plate 12 which is the forces that are above the anchor point 6 be registered, intercepts. Around the anchor point 6 To move upwards is a corresponding per se known framework 13 intended.

As in 1 it can be seen at a near-earth anchor point 7 with a very long rope but also with an elevated anchor point 6 come to that, the winch rope 3 . 4 in a contour contours 10 in the snow ground or on the ground 9 is clamped or cuts into it. When breaking loose the winch rope 3 . 4 from such a contour Contouring 10 At about 4 t of static prestressing force of the winch rope, enormous dynamic mass forces in the winch rope axis arise in the snow ground. These vibrating mass forces in composite form of stress in the form of longitudinal and transverse forces are combined with the devices 8th at least reduced by 50%. The occurring forces, which can reach up to 50 kN, are thereby reliably trapped by the device, wherein the device can withstand forces up to 200 kN without further ado. In the method mentioned is thus advantageous that with relatively simple means a slope processing is made possible, which makes it possible to reduce the wear on the winch rope, the wheels or drive rollers, the chain shoes, the turntable and the winch arm effectively.

The device according to the invention ( 2 . 3 ) is an example cylindrical body with a cylinder jacket wall 20 , which in both end areas, each with a lid 21 . 22 is closed.

One of the lids 21 . 22 surrounds the cylinder jacket wall 20 and is on the outside of the Zylindermantelwandung 20 with a thread 23 screwed on and welded. The lid 21 has a retaining lug extending axially away from the cylinder 24 , At the eyelet 24 is an anchor ring 25 arranged in the manner of a shackle, wherein the anchor ring 25 two aligned anchor ring eyelets 26 . 27 owns, through which an anchor ring bolt 28 put through and with an anchor ring bolt nut 29 is screwed. The anchor ring bolt 28 also extends through the eyelet 24 so that the anchor ring 25 rotatable in the eyelet 24 at the device 8th is attached.

Diametrically opposite is the lid 22 also with a thread 30 on the outside of the cylinder jacket wall 20 screwed on and welded. The lid 22 has a central hole in the middle 31 ,

The central-central hole 31 is from a piston rod 32 passed through, with the piston rod 32 at a free, outer end a screwed ring nut 33 owns which over the lid 22 protrudes. At the ring nut 33 diametrically opposite end is a support plate 34 on the piston rod 32 put on, for example screwed and welded. Between the support plate 34 and the lid 22 is for damping shocks at least one spring package 35 arranged. The spring package 35 can consist of a coil spring in the simplest case. In the application, however, it has been shown that coil springs alone are not optimal. Preferably, there is the spring package 35 from a plurality of along the axis 36 the piston rod 32 arranged disc springs 37 , where the disc springs 37 all of them may have identical or different spring constants. The plate spring elements 37 itself can be formed from parallel plate spring elements.

In an advantageous embodiment is also in series a coil spring 38 present, with the coil spring 38 and the cup springs 37 indirectly via an intermediate plate 39 support each other. Thus, between the lid 22 and the intermediate plate 39 the package of disc springs 37 and between the intermediate plate 39 and the support plate 34 a coil spring 38 arranged. Instead of a single coil spring 38 can also be a plurality of nested coil springs arranged 38 , ie a parallel arranged coil spring package be present.

By the variation of coil springs 38 and disc springs 37 or within the disc springs 37 All possible spring constants can be realized, using the disc springs 37 In particular, a good progression can be achieved.

In a further advantageous embodiment, in which the same parts are provided with the same reference numerals, the support plate fulfills 34 the function of a piston of a hydraulic damper unit, which will not be further described, since hydraulic damper units are known per se. Here, the device 8th both as a hydraulic damping element with one or two fluid chambers on one or both sides of the support plate 34 be educated. Here is the interior with egg filled oil or a hydraulic fluid, wherein during axial movement of the piston rod 32 or the cylinder in the support plate 34 Channels and / or valves are present through which the oil must flow. In order to achieve a return to the initial position at an axial elongation of this hydraulic damper, can around the piston rod 32 around between the upper lid 22 and support plate 34 a return spring be present.

In a further advantageous embodiment, the device 8th formed as a gas spring, wherein the Zylindermantelwandung 20 the pressure tube forms and the piston rod 32 and the support plate 34 the piston. The pressure tube is filled with a compressed gas whose amount determines a preset internal pressure. Depending on the application can within the cylinder jacket wall 20 the piston, which is freely movable therein, the space inside the cylinder jacket wall 20 divide into a chamber or into two chambers, in the latter case, both sides of the piston are filled with gas. Also in this embodiment are in the support plate 34 Openings or valves through which the gas can flow, the cross-section or opening force of which determines the degree of damping. Preferably, the openings or valves are adjusted so that only the beating, ie lying above the normal static load loads lead to a change in length.

at the device according to the invention is advantageous that a relatively small easy-to-use device for intercepting created by oscillating peak loads in ropes of winch machines will cost effectively the equipment and equipment parts a winching machine from wear due to extreme load changes preserved.

at a length of 530 mm and a diameter of 170 mm and an average weight of 35 kg may be such Device advantageously take loads of over 200 kN, record and reduce or dampen the corresponding voltage peaks.

With the inventive method and the inventive Device is thus created the possibility that Slope processing cheaper, less expensive and make it safer.

1

Piste grooming vehicle

2

rotatable construction

3

rope

4

rope

5

Kranarmvorrichtung

6

anchor point

7

anchor point

8th

invention contraption

9

ground

10

Geländekonturenverschneiung

11

anchor rod

12

anchor plate

13

framework

20

Zylindermantelwandung

21

cover

22

cover

23

thread

24

retaining eye

25

anchor ring

26

flush Ankerringöse

27

flush Ankerringöse

28

Anchor eyebolts

29

Anchor ring bolt nut

30

thread

31

central central axial hole

32

piston rod

33

ring nut

34

support plate

35

spring assembly

36

Axle of the piston rod 32

37

Disc springs

38

coil spring

39

intermediate plate

101

Piste grooming vehicle

102

rotatable winch assembly

103

winch rope

104

crane boom

105

106

anchor point

107

ground anchor

108

framework

109

attackpoint

110

terrain contour

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10045524 A1 [0006]

Claims (5)

A method for processing ski slopes, wherein a piste processing vehicle is connected via a winch and a rope to an anchor point anchored in the area above a runway area to be worked, characterized in that between anchor point ( 6 . 7 ) and rope ( 3 . 4 ) At least one mechanical and / or hydraulic shock absorber or compensator is arranged, which degrades occurring in the rope voltage spikes or vibrations. Method according to claim 1, characterized in that the anchor point ( 6 . 7 ) at the top of one from the ground ( 9 ) is arranged towering frame and the frame is anchored in the terrain with a ground anchor. Method according to claim 1 or 2, characterized that a mechanical and / or hydraulic and / or pneumatic Compensator or shock absorber is used, designed so is that he is lying over the normal load in the runway Impact loads due to free-hanging ropes and degrades. Apparatus for trapping peak loads in ropes of winching and ropes-equipped piste working machines for placement between the rope and an anchor point anchored in the terrain, characterized in that the device comprises a gas spring and / or disc springs ( 37 ) and / or coil springs ( 38 ) and / or comprise hydraulic vibration damping elements on which the tension between rope and anchor point can act. Device according to the preceding claim, characterized in that the device is a cylindrical body with a cylinder jacket wall ( 20 ), which in both end regions each with a lid ( 21 . 22 ) is closed, the lids ( 21 . 22 ) the cylinder jacket wall ( 20 ) and on the outside of the Zylindermantelwandung ( 20 ) are screwed and welded, wherein one of the covers ( 21 . 22 ) one from the lid ( 21 . 22 ) extending away eyelet ( 24 ) and the opposite cover of a piston rod ( 32 ), wherein the piston rod ( 32 ) within the cylindrical housing from the outside via an eye on the piston rod ( 32 ) acting force on the disc springs ( 37 ) and / or coil springs ( 38 ) and / or gas pressure springs and / or hydraulic damping device transmits.