PL229011B1 - Asymmetric arm folding fork-gripper with the function of the forced pushing bales of the fork section - Google Patents

Abstract

The subject of the invention is an asymmetric arm folding forklift with the function of forced pushing bales from the fork section. It differs from other grippers in that its gripping arms fold onto its supporting frame, giving it many times smaller dimensions. It is used to grip and transport compressed bales of hay, straw, green fodder, silage and haylage, various sizes and shapes, also foiled bales. Both gripping and by piercing with the fork section, with the possibility of forced pushing of the transported bales from it. To the carrying frame (1) limited on both sides by catch plates (2), in sliding sockets (3) are bolted: internal gripper frame (4) and external gripper frame (5). The ends of the arms permanently have working counter arms (6), connected with each other by a working cylinder (7). The movement aversion of the gripper arms is ensured by the alternating connector (8). A fork beam (9) with working forks (10) is attached to the upper part of the carrying frame.

Description

(21) Filing number: 403866 _{A01D g7 / og (200601)}

A01D 87/06 (2006.01)

Patent Office of the Republic of Poland (22) Date of filing: 13 May 2013

Asymmetric-arm folding forklift with the function of forced pushing the bales from the fork section

(43) Application was announced: 24/11/2014 BUP 24/14 (73) The right holder of the patent: SZORC KRZYSZTOF, Piłatowszczyzna, PL (45) The grant of the patent was announced: 30.05.2018 WUP 05/18 (72) Inventor (s): KRZYSZTOF SZORC, Piłatowszczyzna, PL

σ>

CM

CM

Ω.

PL 229 011 B1

Description of the invention

The subject of the invention is an asymmetric-arm foldable forklift with the function of forced pushing the bales from the fork section. It is used for catching and transporting pressed bales of hay, straw, green fodder, also silage and haylage, of various sizes and shapes, including foil bales. Both grippingly, - realizing a bilaterally alternating asymmetric three-point equal-pressure grip of the transferred bale, thanks to which there is an even pressure on each pressed surface of the bale (important in the case of foil bales), it also causes an even load on the gripper arms; - as well as by piercing with a fork section, with the possibility of forced pushing of the transported bales from it. The forklift is an active, interchangeable machine, coupled with "TUR" type front loaders or industrial loaders, as well as with "three-point linkage" it is mounted on the front or back of an agricultural tractor. Thanks to the option of folding the working arms, the length of the machine decreases many times, which is particularly desirable for safety reasons when transporting the set on public roads, as well as gives greater maneuverability of the set when working in tight spaces. The function of forced pushing of bales from the working forks is particularly useful when loading or storing bales in high rows, because if it is impossible to remove the forks while driving away from the stored bale, the entire row of previously stacked bales falls to the ground. Fork-lift grab equipped with two special arms - pikes, fixed vertically to the gripper's arms in the middle of their length, at least one of which has a cutting blade, can be successfully used for cutting bales of rolled fodder.

In agriculture, both grippers and forks for carrying bales are used separately (as two different machines), which makes them more expensive and makes it difficult to attach them. These grippers come in many versions, but they share a common feature, i.e. the gripping arms are symmetrical to each other, and that they do not fold, thus creating large dimensions. On the other hand, the common feature of the bale transfer forks is that they do not have the possibility of forced pushing of the transferred bale, this is especially important in the case of highly compressed bales. The aim of the invention was to eliminate the above-mentioned drawbacks by creating a new machine combining the functions of the previous ones, and to extract new possibilities resulting from this fact.

The essence of the invention is an asymmetric-arm foldable forklift with the function of forced pushing the bales from the fork section, characterized by the fact that the frame of the machine is limited on both sides by covers with catch hooks, on both of its extreme sides, in the sliding sockets, asymmetric gripper arms are bolted, from which one arm does not have a background, and in the form of an openwork frame describes the opposite arm, so that the gripper arms can fold over each other, laying parallel on the frame itself. The gripper's arms are hydraulically driven, while the synchronization of the arms' movements is ensured by an alternate connector. Above the proper frame on the forklift there is a fork beam with the working forks pointing upwards, but the claw beam can also be locked with the proper frame in position, - forks forward.

The presented asymmetric-arm folding forklift with the function of forced pushing the bales from the fork section is a strong and durable machine, at the same time light and cheap. Adapted to perform complex tasks related to the transfer of bales, depending on individual needs, it is possible to freely select the type of work (grab or fork), it is decided by the operator from the cabin. The solutions contained in the machine significantly expand the possibilities of working with large-size bales.

An example of an asymmetric-arm folded forklift with the function of forced pushing of bales from the fork section made according to the invention is shown in Fig. 1.

The following are bolted to the support frame 1 on both sides by the catch plates 2, in the slide sockets 3 the following are bolted: the internal gripper's frame 4 and the external gripper's frame 5. The ends of the arms permanently have counter-working arms 6, connected with each other by a working cylinder with cables 7. Movement aversion the gripper frames are provided with an alternating connector 8. A fork beam 9 with working forks 10 is attached to the upper part of the support frame.

The principle of operation of the asymmetric-arm folded forklift with the function of forced pushing of the bales from the fork section, made according to the invention, is as follows: after hanging by the hooks located in the machine 2 hitch shoes, on the support frame of the front loader and securing it in pin sockets, and connecting the loader's power hydraulics with cables to actuator 7 the machine is ready for operation. For the operation of the machine in the gripper version, only the gripping arms of the machine are used: internal 4 and external 5, which are driven by the working cylinder 7 through the counter arms 6.

Due to the above, in order to catch a bale of rolled forage, the extension of the piston rod of the hydraulic cylinder 7 should be reduced to a position in which, opening the arms 4 and 5 of the gripper allows it to run over on the fodder bales, and then through the overhang of the piston rod 7 the bale is clamped in the gripping arms 4 and 5, the bale so grabbed is transported to its destination. To work when transporting bales with a forklift system, the gripper arms 4 and 5 must be folded to the maximum, while the working frame of the front loader to which the forklift is attached must be tilted forward by approx. 90 degrees, so that the working forks are parallel to the ground. Then, during the drive-on, they pierce the lying bale, then they are lifted and transported by the loader to the destination. In both cases, in order to get the bale out of the forklift, repeat the steps performed for catching it in the reverse order.

When working in the forced pushing system of bales from the fork section, the arms 4 and 5 of the forklift are folded to the maximum, while the fork beam 9 with the working forks 10 is tilted forward by approx. 90 angular degrees, so that the working forks 10 are parallel to the ground. In this way, the bale inserted and transferred to its destination is pushed off the working forks by opening the arms 4 and 5 of the forklift.

Claims (7)

Patent claims 1. Asymmetric-arm folding forklift with the function of forced pushing the bales from the fork section, consisting of a carrying frame (1) with catch plates (2), in which the inner (4) and outer gripper arms (4) are bolted through the sliding seats (3). 5), the ends of which have opposite working arms (6), connected with each other by a working cylinder (7) and an alternating connector (8), while a replaceable fork beam (9) with working forks (10) is attached to the upper part of the support frame through a quick coupler. ), characterized in that it has two different in terms of shape, internal (4) and external (5) gripping arms, of which one inner gripping arm (4) has an outer outline smaller than the inner outline of the frame of the other outer gripping arm (5). ). 2. Asymmetric-arm foldable forklift with the function of forced pushing the bales from the fork section, according to claim The gripping arm according to claim 1, characterized in that the inner (4) and outer (5) gripping arms fold over each other along the supporting frame (1) of the machine, while in the opposite extreme position, the inner (4) and outer (5) gripping arms open to a size larger than the outer contour of the bales to be caught 3. Asymmetric-arm foldable forklift with the function of forced pushing the bales from the fork section, according to claim The machine according to claim 1 or 2, characterized in that the upper part of the supporting frame (1) of the machine has a multi-position quick coupler to which a replaceable fork beam (9) provided with working forks (10) is attached. 4. Asymmetric-arm foldable forklift with the function of forced pushing the bales from the fork section, according to claim 1 or 2 or 3, characterized in that the replaceable working beam (9) is mounted in relation to the supporting frame (1) of the machine in the following positions: forks upright and forks forward, in which the working forks (10) are located right next to over the operating zone of the inner (4) and outer (5) grasping arms. 5. Asymmetric-arm foldable forklift with the function of forced pushing the bales from the fork section, according to claim 1 or 2, characterized in that the replaceable working beam (9) provided with working forks (10) is placed in the lower part of the supporting frame (1) of the machine and is located just below the operating zone of the inner (4) and outer (5) gripping arms. ). 6. Asymmetric-arm foldable forklift with the function of forced pushing the bales from the fork section according to claim The method of claim 1 or 2, characterized in that two actuators are used for folding and unfolding the inner (4) and outer (5) working arms, and an oil flow divider is used for their synchronization. 7. Asymmetric-arm foldable forklift with the function of forced pushing the bales from the fork section according to claim 1 or 2 or 6, characterized in that the inner (4) and outer (5) working arms do not have working counter arms (6), and the cylinders for folding and unfolding the inner (4) and outer (5) working arms are directly connected to the attached to them in front of the sliding seats (3).