PL240129B1 - Single-axis device - Google Patents

Description

Description of the invention

The present invention relates to a uniaxial device for attaching a landscaping tool to which a removable tool is attached, most preferably a mower, a milling machine, a plow. Attachments are attached to the lower frame with swing arms. The swing arms are pivoted about pins and connected by toothed segments that form the pivot joint of the arms with a linkage to the lower support frame. The subject of the invention is intended primarily for landscaping in hard-to-reach and sloping areas.

The patent specification DE102016110810 describes a single-axis instrument carrier as an accessory. The holder consists of at least one controllable support roller. Every n one supporting roller is connected to the control of the wheel set such that the movement of the at least one supporting roller accelerates or slows down the wheels in a coordinated manner. The drive consists of a hydraulic worm gear, a hydraulic steering cylinder or an electric drive.

EP3210809 describes a single axle mowing device in which each axle is driven by its own hydraulic drive which is then connected to the main engine. The lack of a joint to drive the rear axle allows the engine to be centrally located close to the ground to lower the center of gravity along the central axis of the chassis.

Patent description EP3251481 describes a uniaxial carrier with a handle, which consists of at least one steerable support roller. The roller can be additionally equipped with spikes to improve adhesion. The support rollers used in the present invention are not steerable.

Patent description EP2510767 describes a multifunction device consisting of two drive mechanisms (wheel units) that can drive two identical or two different machines, depending on what they are equipped with. It is a single axle vehicle with a common axle perpendicular to the driving direction. The first patent claim shows a vehicle width of at least 3.5 meters. The wheel assemblies are slidably arranged at the end of the uniaxial vehicle.

Patent description US4964265 describes a remotely controlled self-propelled mower powered by electric motors powered by batteries. The rear wheels are driven, the machine is steered by the front wheels through a system of belts and pulleys connected to the front wheels. The road wheels are also equipped with cone-shaped hubs for operation on uneven terrain.

GB2 92 880 discloses a remotely controlled mower traveling gear having four arms on which the wheels are resiliently suspended. The frame has a motor unit with a drive shaft to drive the working mechanism and road wheels. The running wheels are rotated in running units around the vertical axis in an unlimited range of 360 ° angles.

The aforementioned solutions have common disadvantages, such as insufficient everywhere ability to move anywhere combined with difficulties in keeping the implement or the mowing and mowing heads level in relation to the ground. Another disadvantage is poor stability and maneuverability on extreme slopes and off-road. All two-axle machines have an insufficient ability to negotiate uneven terrain, while an operator is required for the currently available single-axle machines.

These deficiencies are largely eliminated by uniaxial devices for attaching the landscaping implements, the essence of which is to use a single axis, so that these devices can be most maneuverable and pivot around their vertical axis in a minimal space. The uniqueness also lies in the possibility of using two working devices that can be disassembled with a single-axis device. The subject matter of the invention therefore allows the use of two work tools, which need not even be of one type. The most commonly used work tools are mowers, plows, snow blowers and others. The invention relates to independent rotation of the wheel which allows the above rotation about the vertical axis. The subject of the invention is remotely controlled, without the need for the direct presence of a physical operator at the site of active operation of the subject of the invention. The object of the invention can move both forwards and backwards without having to pivot about its vertical axis. This contributes to even greater usability in hard-to-reach terrain. Moreover, the subject matter of the invention can move in all directions with the active participation of the work tool, which means that the work tool connected thereto is still active when the direction changes. The center of gravity is balanced by track rollers, which are part of the work tool. Work tools can be detachably attached to the Wah arms

By the handles at their ends. The swing arms are connected to each other by toothed segments, which ensures better operation in difficult terrain. This applies to both positive (bumps) and negative (pits) inequalities. A hydraulic cylinder connected to the oscillating arm is also provided to improve floatation by applying a pressing force to provide better grip between the drive wheels (drive axle) and the driven work tool shaft, allowing the work tools to float smoothly on the ground. The hydraulic cylinder thus absorbs the opposing forces acting on it. The hydraulic cylinder is pivotally connected to the swing arm and to a side wall which is permanently attached to the support frame. The vertical piston type motor mechanically drives the pump, which supplies the required amount of oil to the directional control valve. The directional control valve is electronically controlled by a control unit that determines the oil flow in the system based on the signal from the radio transmitter as required. Work tools can be connected to the hydraulic system of the subject of the invention, so that the work tools can be moved vertically and horizontally. As a further feature of the invention, the work tool is offset in the direction of the longitudinal vertical plane of the uniaxial device, which means, when used in the field during the movement of the uniaxial device for mounting the landscaping tool, that at least one wheel does not interfere with the surface being processed. Due to the improvement of adhesion by means of swing arms and a hydraulic cylinder, the device according to the invention is characterized by the possibility of automatic return to the working position up to an angle of 55 ° and continuous operation at an inclination of 45 °. The hydrau multiple cylinders can be operated independently of one another. The subject of the invention can be moved on wheels or tracks, depending on the need for use.

The invention will be described in more detail below using exemplary embodiments with the aid of drawing figures, wherein:

Figure 1 shows a plan view of the uniaxial device, Figure 2 shows a side view of a uniaxial device, Figure 3 shows a side view of the frame of a uniaxial device without drive, and Figure 4 shows a schematic view of the uniaxial device in three positions when working on rough terrain.

The uniaxial device 1 according to an embodiment of the present invention consists of a frame on which the motor 2 and all the driving equipment of the subject of the invention are mounted.

The uniaxial device 1, its running part, which is made up of wheels 3 with a return mechanism driven separately by a vertical 2-piston motor located on the support frame 11, is remotely controlled by a transmitter that controls the control unit 4, which controls, inter alia, the direction of rotation of the wheels 3 The motor 2 mechanically drives a pump that supplies the required amount of oil to the directional control valve. The direction control valve is electronically controlled by a control unit 4 which determines the oil flow in the system based on the signal from the radio transmitter as required.

The uniaxial device 1 can rotate around its axis due to the independent rotation of the wheels 3. The independent rotation of the wheels 3 allows the wheels 3 to rotate in the opposite direction, so that the uniaxial device pivots about its vertical axis. The transmitter can control the speed of the uniaxial device 1, the travel speed and the on / off of the uniaxial device 1, and the hydraulic cylinder 8 can also be controlled if an attachment is connected to the hydraulic distribution of the uniaxial device 1. The uniaxial device 1 can be moved forwards and backwards without the need to rotate the object of the invention itself, even with the active activation of the work tool.

The rollers 9 are intended to balance the center of gravity and the tilt itself during the movement of the uniaxial device 1, where the rollers 9 are part of the work equipment, which are detachably connected to the swing arms 6 of the uniaxial device 1 by means of holders 10 at the ends of the swing arms 6. The swing arms 6 are pivotable about pins and connected by toothed segments 7 which form a pivot joint of the swing arms with connection to the support frame 11. When approaching uneven terrain, the front attachment 5, additional equipment, removably connected to the handle 10 of the swing arm 6, which is connected through mesh segments 7 toothed with the second swing arm 6, lifts the second roller 9 from the ground thanks to the connection. removably connected to the second swing arm 6. Thanks to the mesh 7-toothed segments of the 6 swinging arms, located in the center of the frame 11, the ground unevenness is perfectly preserved, and thanks to this, the wheels 3 achieve perfect traction and better transfer of forces from the wheels 3 to the ground, which is necessary for moving the machine 1

Unequaled on steep surfaces and to cope with uneven terrain and pits. This ensures satisfactory operation on uneven terrain with large unevenness. The hydraulic cylinder 8 contributes to achieving perfect traction by applying a pressing force to at least one of the swing arms 6 which act through mesh 7-toothed segments on the other 6 swing arm, thus eliminating undesirable sudden jumps in the field when the hydraulic cylinder 8 absorbs opposing forces acting on him.

The hydraulic cylinder 8 is pivotally connected to the pendulum arm and to a side wall which is firmly attached to the support frame 11 of the uniaxial device 1. Swinging arms 6 are equipped at adjacent ends with mesh segments 7 toothed, while the working equipment allows smooth movement and following the unevenness of the ground while driving along the contour of the ground.

The swing arms 6 are on one side attached to holders 10 to which removable work tools are connected. The work tool can be connected to the hydraulic circuit of the subject of the invention and thus allows additional vertical and horizontal movements of the work tool.

The uniaxial device 1 according to the present invention greatly facilitates the work in the field due to the lateral displacement of the work tool in relation to the longitudinal vertical plane P of the uniaxial device 1, where at least one wheel 3 does not collide with the surface to be treated, e.g. using a mower as 5 work tool. When actuated, the work tool 5 acts over a surface defined by the width of the work tool, with at least one wheel 3 of the uniaxial device 1 passing through the surface during movement. When working on a slope, the object of the invention can automatically return to the working position up to an angle of 55 ° and work continuously at an angle of 45 °. Thanks to its low center of gravity, double-sided operation and technical balancing solution, the 1 uniaxial device is suitable for work both on level terrain and on steep slopes or on uneven terrain. The uniaxial device 1 can move both on wheels and on tracks.

The uniaxial device for attaching landscaping equipment according to the invention is used for trimming brush, smoothing slopes or edges of roads. By connecting various attachments, the use of the single axle device is extended to other functions, preferably mower, snow blower, plow and the like.

Claims (6)

1. A single-axle device (1) for attaching landscaping tools, consisting of an engine (2), wheels (3) or tracks with independently controlled drives, a control unit (4), a hydraulic cylinder (8), a handle (10), frames (11), characterized in that two work attachments (5) with rollers (9) are connected to the uniaxial device (1), rotatably mounted by means of pivoting arms (6) and inclined to the side in relation to the longitudinal plane (P ) of a vertical single-axle device (1), one of which (5) is at the front and the other at the rear. 2. The device (1) according to claim 1 The work tool (5) as claimed in claim 1, characterized in that the swing arms (6) of the work tool (5) are provided at adjacent ends with mesh toothed segments (7). 3. The device (1) according to claim 1 The device of claim 1, characterized in that at least one wheel (3) of the uniaxial device is outside the area to be processed by the work tool (5). 4. The device (1) according to claim 1, A device according to claim 1, characterized in that at least one arm (7) is connected to the frame (11) by means of a hydraulic cylinder (8). 5. The device (1) according to claim 1 A machine as claimed in claim 1, characterized in that the working tools (5) are mowers and / or a mulching device and / or a plow and / or a cutter and / or a snow blower. 6. The device (1) according to claim 1 Device (1) according to any of the preceding claims, characterized in that two identical or different work tools (5) are connected to the uniaxial device (1).