JPS6268907A - Spur forming machine of cross-country course - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention provides a system in which a slide is placed on a frame to be connected to a vehicle, and a device for transmitting pressure to the slide is installed between the entire vehicle and the seven frames. This invention relates to a cross-country course forming device.

[Conventional technology]

This type of spur-forming equipment is used to create cross-country courses, and is used for the construction of tracks and snowmobiles for laying ski courses in the form of steered ski sheds and motorcycles. Manufactured and used raw as a device. The spur forming device for courses has a slide, under which a deformed shoe is attached, which forms the original spur groove on the course.

In the case of a spur forming device which is constructed as an example type device, one or two weights are attached to the top of the slide to press down on the spur forming shoe. In this case, the slide is connected to the steering and traction frame, which frame is still supported on the front slide in the case of a traction machine.

The traction frame supports the knife bar in front of the slide, and if the word is hard, the knife bar descends to loosen the N, and the spur forming shoe can form the spur.

The traction frame X7 is connected to the traction train via the traction @1 in the case of traction-type instruments. In the case of a draw-type device, the draw train cannot always have a draw-type spur forming device on hand, and each time it is used to prepare a course, it must be installed and removed manually. Furthermore, the weights on which the slides are loaded are rarely changeable during use. However, towable devices have the particular advantage of being widely used, as they can be towed by any suitable vehicle.
Therefore, it is becoming more and more convenient. In the case of mounted machines, the steering frame is connected to the pull train via a joint (ball joint or universal joint). The steering frame is normally acted upon by a hydraulic cylinder supported by a tow train. This hydraulic cylinder allows the penetration depth of the spur forming device to be adjusted to the snow quality at each time, and when the spur forming device is not in use, the hydraulic cylinder can also be used to swing the spur forming device into a fixed position. Therefore, this mounted spur forming instrument can be easily equipped for towing.
It is possible to do so. Control of the mounted spur forming machine is carried out from the operator's console of the tow train.

[Problem that the invention seeks to solve]

Only in the case of conventional instruments, the above advantages are countered by two disadvantages. f the instrument can only be conveniently used in conjunction with a vehicle suitably equipped (hydraulic) for operating the spur-forming machine; furthermore, the maneuverability of the spur-forming machine is impaired by the incompressibility of the working fluid, and the known instrument It is possible to barely or insufficiently follow the unevenness of the surface.

The K to this extent required a substantial and expensive hydraulic system.

[Means and effects for solving the problems] This invention has the following features:
The object of the present invention is to provide a course forming instrument that combines the advantages of a guide-type instrument and an attached-type instrument without having their disadvantages. In spur-forming devices of the type mentioned at the outset, this objective is achieved by configuring the pressure device as a helical spring or a torsion bar spring. By constructing the spur forming device according to the invention, the device can follow the irregularities of the ground almost exactly and the desired pressing force can be kept almost constant over a wide range.

In one embodiment of the invention, one end of the spring, whether constructed with a coil spring or a torsion bar spring, is supported by a frame constructed as a steering frame, which can be connected to a vehicle, and the other end is mounted on a slide. The connecting rod is supported by the connecting rod used for the vehicle, and its length can be changed arbitrarily in order to arbitrarily change the stress of the coil spring or torsion rod spring. , which is kinematically advantageous.

A particularly preferred simple construction, taking into account the severe weather conditions in which the sprue-forming device is used, is that the torsion bar spring consists, as is known, of two non-circular, in particular square cross-section, tube elements, one of which is connected to the other. It is characterized in that it is inserted and elastically supported via a rubber cylinder on the inner wall of the outer tube element, and the outer tube element is firmly connected to the connecting rod and the inner tube element to the frame.

The frame, connecting rod, and coupler form a 4-bar link mechanism metal, the 7 frames of the spur forming device and the coupler form both rank parts of the 4-bar link mechanism, and the connecting rod is the connecting part of the 4-bar link mechanism. This arrangement is particularly easy to manufacture and simple to operate.

If the frame is connected to the vehicle through a clutch, a guide surface facing the clutch is provided to lift the slide off the ground (when in the transport position)
It has turned out to be particularly advantageous to support support elements arranged on the frame, for example rollers, on guide surfaces such that their outer periphery rests on both guide surfaces (rather than on the buttons at the same time). This clutch arrangement virtually eliminates any play between the rollers and the guide surface (when lifting up the spool) and ensures that the spur forming device is completely stationary and centered on the shaft of the pulley. !
This is particularly advantageous in the case of spur-forming devices having a spool-forming device, but a clutch designed in this way can also be used in spur-forming devices that do not have the spring arrangement according to the invention described above.

In other cases, it is particularly desirable to arrange the guide surface downwards (toward the ground) and widen.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings. One embodiment of the invention is illustrated in FIG. 1.2, and in FIG.
A second embodiment is shown in FIG.

A steering frame 2 is attached to a slide l supporting a spur-forming shoe 21. One end of the steering frame is connected to the swing shaft 3 through a swing shaft 3, and the other end is connected to a pulley 1 through a joint 4.
They are connected to the clutches 8 of 3 respectively.

A rubber-elastic bushing 5 serving as a torsion bar spring element serves to adjust and stabilize the slide l.

The steering frame 2 supports an electric spindle and cylinder unit that completely breaks down the ice layer if there is one on the course and forms a joint 14 as well as a cutting tool bar 9 that can be operated by a lever 11. This unit has a universal joint at one end.
G metal clutch 8, the other end connected to the connecting rod 1 via a ball joint 15
It is tied to 2.

As shown in FIG. 1.2, a connecting rod 12 is connected via a joint 6 to a spring e-cylinder unit 20, which is connected via a beam and a joint 7 to a frame constructed as a frame 2. The spring cylinder/tick unit 20 consists of an actual cylinder, a piston rod 13 and a compression spring 10.

In both embodiments, the steering frame 2, the connecting rod 12 & the O-spindle cylinder unit 14 form a 4-bar link mechanism, and the crank part is made up of the steering frame 2, the spindle fist cylinder unit 14, and the connecting rod 12. be.

In the embodiment shown in FIGS. 1 and 2, the force exerted by the cylinder on the connecting rod 12 is approximately the same as that of the joint 15 and the universal joint 6? Intermediate clutch 8,
Therefore, it is transmitted to the crank (spindle cylinder unit) 14 connected to the pull wheel 23. clutch 8
The spindle and
The length of the cylinder unit 14 varies, the spindle cylinder unit 20 is more or less compressed, and the spindle
When the cylinder unit is extended, the spur-forming device is pressed against the spring, the force with which the slide 1 compresses the spring being proportional to the compression of the spring cylinder 20.

The spring turret cylinder unit 20 is arranged to allow vertical movement of the slide or the spur forming device without substantially increasing the force required for it, so that the spur forming device can accurately adapt to irregularities in the ground without any problems. can be followed. The kinematic design of the four-bar linkage can be such that in both embodiments the pressing force of the slide l changes only slightly when moving up and down within the operating range.

When the spindle/cylinder unit 14 contracts, the connection 1
112 is supported by the steering frame 2 via a spring e-cylinder unit 20, resulting in a three-bar linkage with hinge points 4, 15, and 16, the lower side of which is the spindle cylinder 22) 14. The entire spool-forming device becomes shorter (contracted) and pivots upwards about the hinge point 4 of the clutch 8, leaving the fixed position advantageous for normal driving (when not forming a spool). .

In the second embodiment (FIGS. 3 and 4), the spring/cylinder (22) 20 is replaced by a torsion bow element, a so-called roaster element. This element has two longitudinal tube elements 17.24 of non-circular cross-section, square in the illustrated embodiment. A tube element 17 is inserted into the tube element 24 and the inner tube element 17
is supported on the inner wall of the outer tube element 24 via a rubber cylinder 25.

The outer tube element 24 is connected to the connecting rod 12, and the inner tube element 17 is connected to the frame (
Each is firmly connected to Kajishio frame 2.

The structural elements 12.14 can also be integrated into a vehicle.

, the clutch 8 has a guide surface 22 similar to an oval. Rollers 18, supported on a frame 2, are located between two mutually facing guide surfaces 22, which rollers are sufficiently spaced from the guide surfaces 22 when the spur forming device is in the operating position, and are located at a sufficient distance from the guiding surfaces 22 when the spur forming device is in the operating position. can follow the towing vehicle 23 like a trailer when forming a spur.

The guide surface 22 widens toward the ground.
There is virtually no play between the tip roller 18 and the guide surface 22 in the raised position. This allows the spur forming device to rest and to be centered on the axis of the pull wheel 23. Clutch 8 therefore has a centering function with respect to the spur forming device (centering clutch).

〔Effect of the invention〕

The present invention makes it possible to provide a spur forming instrument that combines the advantages of the prior art and also overcomes the drawbacks of the prior art.

That is, the instrument of the present invention can be towed by any suitable vehicle and can adequately follow the irregularities of the course without the need for expensive hydraulic equipment.

[Brief explanation of drawings]

FIG. 1 is a side view showing one embodiment of the device of the present invention. Figure 2 is a plan view of Figure M1. Figure 3 is a side view showing a second embodiment of the device of the present invention. FIG. 4 is a plan view of FIG. 3.

Claims (6)

[Claims] (1) A pressurizing device in a spur forming device for a cross-country course, in which a sliding tree is arranged on a frame for connecting to a vehicle, and a device for transmitting pressure to the sliding tree is provided between the vehicle and the frame. A spur forming device, characterized in that the spring is constructed as a coil spring 20 or as a torsion bar spring 17, 24, 25. (2) Whether configured as a coil spring 20 or as a torsion bar spring 17, 24, 25, one end of the spring is supported by a frame configured as, for example, a steering frame 2 that can be connected to a vehicle, and the other end is supported by a connecting rod 12 that acts on the slide 1, and connected via a connector 14 whose length can be arbitrarily changed in order to arbitrarily change the stress of the coil spring 20 or torsion bar springs 17, 24, 25. A spur forming device according to claim 1, characterized in that it is connected to a vehicle, in particular to a clutch 8 thereof. (3) Two non-circular torsion bar springs 17, 24, 25;
It consists of tube elements 17, 24 with a particularly square cross section, one of which 17 is inserted into the other 24 and is supported elastically on the inner wall of the outer tube element 24 via a rubber cylinder 25, the outer tube element 24 being connected to the connecting rod 12, 3. Spool-forming instrument according to claim 2, characterized in that the inner tube elements (17) are each rigidly connected to a cradle. (4) A four-bar link mechanism is formed by the frame, the connecting rod 12, and the coupler 14, and in this case, the frame of the spur forming device and the coupler 14 form both crank parts of the four-bar link mechanism, and the coupler 14 forms a four-bar link mechanism. The spur forming instrument according to claim 2 or 3, characterized in that the rod 12 is a connecting part of a four-bar linkage mechanism. (5) When the mount is connected to the vehicle via the clutch,
In the spur forming device according to any one of claims 1 to 4, the guide surface 2 faces the clutch 8.
2 is provided, and when the sliding tree 1 is lifted from the ground (
Spool-forming device characterized in that (in the transport position) supporting elements arranged on the pedestal, such as rollers 18, are supported on guide surfaces. (6) The spur forming instrument according to claim 5, wherein the guide surface 22 is disposed in a downward direction (towards the ground) and widens toward the end.