CS258726B1 - Self-driving chassis for inclined terrain - Google Patents

Abstract

The self-propelled chassis for inclined terrain is intended as a carrier of working equipment for work intended primarily for establishing, restoring forests or orchards, growing seedlings and for educational work in forest stands. Its design is intended for movement on slopes with a higher inclination, both for driving on the slope and on the contour. The chassis consists of a supporting frame on which the drive unit with a hydraulic system, servo steering and the operator's workplace are located. The frame consoles are mounted with supporting arms with flanges for attaching hydraulic motors, on which the wheels are mounted. One pair of wheels (rear) are adjustable for maneuverability. Each wheel can be height-controlled, which makes it possible to change the ground clearance under the machine, the wheelbase length, or level the machine on the slope. The greatest usability appears in forestry. When planting or maintaining vegetation on sloping terrain.

Description

The invention relates to a self-propelled bogie intended for driving on inclined terrains, pastures, meadows and forests. The chassis serves as a carrier of work equipment for seedlings, for artificial forest regeneration and for forest work. The chassis can overcome various obstacles such as terrain pits, rocks, stumps or lying logs.

To date, conventional wheeled agricultural tractors have been used which are either unsuitable for work on slopes or cost-intensive in relation to the work performed.

The aforementioned disadvantages are eliminated by the self-propelled undercarriage undercarriage, which is designed as a single purpose vehicle for moving both on the slope and contour lines to a certain slope of the terrain without moving the center of gravity of the undercarriage and thus the machine. and only when the terrain is heavily inclined does the chassis partially tilt. The movement of said bogie in sloping terrain differs from that of classic fixed axles.

The essence of the invention is that the chassis design has four wheels driven by hydraulic motors. Each wheel is hinged on a swivel suspension arm which is controlled by a linear hydraulic motor (hydraulic cylinder).

When traveling off-road, each suspension arm can be individually controlled, allowing easy maneuvering and overcoming obstacles in forested slope terrain.

Figure 1 is a front elevational view of the chassis showing the possibility of lifting the arms and hence the wheels.

Figure 2 shows a plan view of a self-propelled bogie concept for inclined terrain. The figure shows the mounting of the swivel arms with no wheels steered.

The self-propelled sloping bogie shown in Figures 1 and 2 consists of a support frame 11, which is made of steel profiles. It serves as an attachment of other components and also for the support of the hydraulic system. The suspension arms 12 are attached by means of the brackets 111 and the pivot bearing 112. Each suspension arm 12 is controlled by a linear hydraulic motor 13 which is rotatably mounted on the frame in the bracket 113 and the piston rod 131 in the bracket 121 of the suspension arm. 12. On the outside of the suspension arm is a hollow flange 122, in which a radial low-speed hydraulic motor 14 is mounted, on which the drive wheel 17 is mounted. In the rear part of the frame there are brackets 15 The spacer 16 is in its position mounted on the pin 161. The spacer arms of the support arm 16 are connected to each other via the bosses 162 and the connecting rod pin 163 to the connecting rod 18 through the eyes 181.

The steering of the wheels is provided by a linear steering motor 19 mounted on one side in the cylinder bracket, the steering 191 welded to the front wall of the frame 114, and the piston rod 192 through the eye 193 is mounted in the boss 162 of the support arm 16.

At the rear of the support frame 11 are brackets 115 for fastening the drive motor 20 and brackets 116 for accommodating the drive of the hydroenergy 21.

The transmission of the propellant is ensured by a hydraulic system consisting of pipes and distributors.

The R-directional controls are actuated by the rods 22 or the foot pedals 23. The direction of travel is controlled by the hydraulic power steering 24, the steering wheel 25 via a portable articulated shaft 26.

Self-propelled undercarriage for sloping terrain when driving - flat driving.

Depending on the need, the inclination of the suspension arms 12 can be varied to achieve varying ground clearance under machine "b" due to terrain unevenness, thereby automatically obtaining a wheelbase extension of "a" while ensuring horizontal support of the support frame 11 and thereby avoiding chassis.

Driving downhill

If necessary, a pair of wheels 17 mounted on the suspension arms 12 (front or rear lifted as shown in Fig. 1) can be up to the maximum inclination value given by "a". In this way the support frame 11 remains horizontal and to change the position of the center of gravity during the running of the chassis.

Driving along the contour line

Depending on the need for a pair of wheels 17 on the suspension arms 12, those which are uppermost in the direction of travel down the slope are always raised. In this manner of travel, the support frame 11 remains in a horizontal position and the chassis center of gravity does not change during travel.

Claims (2)

258726 PREDMET A self-propelled bogie for inclined platforms, characterized in that it comprises a carrying frame (11) of a drive unit (20) of a hydrostatic drive and on the frame (11) a suspension arm (12) provided with a hollow flange (122) to which hydraulic motors are mounted (14), the rectilinear hydromotors (13) determine the position of the suspension brackets relative to the frame. VYNALEZU 2. A self-propelled bogie for inclined terrain according to claim 1, characterized in that one pair of wheels (17) mounted on the suspension arms (12) is supported by a cone (51) and intermediate arms (16). ) rotatably mounted and their connecting position secured by a connecting rod (18). 2 sheets of drawings