Constructive arrangement in support for extensor mechanism

Abstract

The present invention describes a support for an extensor mechanism used in conjunction with crane booms, including articulated cranes, truck-mounted cranes, loader cranes or other similar equipment used for lifting loads or various movements, such as in industrial automation equipment. The proposed support has means of attachment to the sleeve of the extensor mechanism, generally an extensor cylinder, which uses pins and screws. The sleeve of the mechanism, in turn, has specific mounting plates on its body that allow fastening the support in place, replacing the conventional flanges and trunnions. The present constructive arrangement provides the advantages of reducing the space required for mounting, reducing the total weight of the support and mechanism assembly, and optimising the alignment thereof relative to the base in applications in which several mechanisms are used, such as for example in crane wherein multiple hydraulic cylinders are employed.

Description

[0001] CONSTRUCTIONAL ARRANGEMENT IN SUPPORT OF EXTENSION MECHANISM

[0002] Subject:

[0003]

[0001] This Utility Model Patent describes a support for an extension mechanism used with crane booms, including articulated cranes, vehicle-mounted cranes, truck-mounted cranes, or other similar equipment used for lifting loads or various movements, such as in industrial automation equipment. The proposed support has means of fixing it to the sleeve of the extension mechanism, generally an extension cylinder, using pins and screws. The sleeve of the mechanism, in turn, has specific support plates on its body that allow the support to be fixed, replacing traditional flanges and trunnions.As advantages, the present constructive arrangement reduces the space required for assembly, reduces the total weight of the support and mechanism assembly, and optimizes the alignment of the same in relation to the base in situations where several mechanisms are used, such as, for example, in crane booms, where several hydraulic cylinders are used.

[0004] State of the Art:

[0005]

[0002] In the search for the state of the art, documents were found that mention articulation and angle adjustment systems in lifting arm structures in machines, mainly cranes, forklifts and other load handling devices. These documents include solutions for arm articulation, angle control by means of hydraulic actuators, and methods for connecting and aligning boom segments.

[0006]

[0003] With regard to patent references relating to mechanisms that address lifting arm structures in machines, focusing on articulation and angle adjustment systems, document MU 7603365-1, filed on 05 / 12 / 1996 by MADAL PALFINGER S / A, entitled “CONSTRUCTIVE ARRANGEMENT IN A BOOM FOR A VEHICLE-MOUNTED HYDRAULIC CRANE”, is known. It presents a vehicle-mounted hydraulic crane with a hydraulically actuated extendable boom. The structure includes a rotating base fixed to the vehicle chassis, which supports an articulated arm actuated by a hydraulic cylinder. This arm articulates a support element for retractable booms, with additional hydraulic cylinders that control the extension of the boom elements. The cylinders are fixed by lateral supports and support projections.

[0007]

[0004] Document US2014271078, filed by KOCH RODNEY and published on 09 / 18 / 2014, entitled “LIFTING ARM STRUCTURE WITH ARTICULATED PORTION,” describes an articulated lifting arm structure comprising a main portion connected to a knee portion, which, in turn, articulates with the vertical structure of the machine. The articulation between these parts can be fixed or adjustable with an actuator, such as a hydraulic cylinder, to control the bending angle. In this case, the cylinders are fixed at the end of the rod and by the sleeve. One of the cylinders is fixed to the articulated parts using plates fixed to the equipment, at whose end the cylinder is fixed by the sleeve of the same, using a pin.

[0008]

[0005] Document CN207483272, published on 12 / 06 / 2018 by GUO JIANXING, entitled “FORKLIFT EXTENSION ARM LIFTING DEVICES”, describes a device mounted on the forklift forks, consisting of a base attached to a square tubular telescopic arm. The main hydraulic cylinder is fixed at the opposite end of the base using a support. The rod of the lower hydraulic cylinder is connected to the support arm by means of a joint, transmitting hydraulic force to the arm. Additionally, two secondary hydraulic cylinders are fixed directly onto the support arm with lateral supports. The telescopic arms are sliding and coupled to the upper hydraulic cylinders for controlled extension and lifting.

[0009]

[0006] In practice, in cranes and telescopic arms, the hydraulic cylinders that allow the extension of the arms or part thereof are fixed to the outside of said arms or booms, generally using cylinder sleeve fixing flanges or trunnions that act as supports for the same.

[0010]

[0007] In this way, various means of fixing the extension mechanisms, generally hydraulic cylinders, used for extending or articulating machine parts or in cranes and load lifting equipment, are already known in the state of the art.

[0011]

[0008] However, all known fastening methods present technical problems related to the fact that they occupy a lot of space and arrange the cylinders geometrically far from the telescopic boom. In this matter, it should be borne in mind that many pieces of equipment, such as cranes, have telescopic booms that use a plurality of cylinders, reaching various stages of extension. This configuration, using means known as flanges and trunnions, greatly hinders the installation and operation of the various mechanisms, and prevents the use of several mechanisms together in situations where there is little space available. In addition, this known configuration increases the weight of the assembly and results in difficult maintenance.

[0012]

[0009] Therefore, no documents and / or references were found in the state of the art that present or suggest the present solution regarding means of fixing the extension mechanism such as the present constructive arrangement, so the solution proposed here has novelty and inventive step.

[0013] Inventive Concept:

[0014]

[0010] The present Constructive Arrangement in Extension Mechanism Support was developed with the objectives of: a) Reducing the space required for the installation of extension mechanisms, generally hydraulic cylinders;

[0015] b) To allow for better alignment between the extension mechanism and the telescopic boom or arm, as the support serves as a support and adjustment for its position;

[0016] c) Facilitate the attachment of extension mechanisms to the equipment, which also results in easier maintenance;

[0017] d) Reducing the amount of material needed to manufacture the support, as well as reducing the overall weight, directly influences the equipment's efficiency.

[0018]

[0011] To achieve the above objectives, a compact extension mechanism support was developed that can be used in various types of equipment that utilize telescopic booms or arms, such as articulated cranes, truck-mounted cranes, and others, which use a pivoting mechanism where extension mechanisms, generally hydraulic cylinders, are used as extension means. The use of this support eliminates the need for traditional flanges and trunnions.

[0019]

[0012] In the present possible configuration, the extension mechanism is shown as a hydraulic cylinder fixed by the sleeve to the fixed portion of the boom or extension arm, and at the end of the rod to the movable portion of the boom or extension arm. The rod is fixed to the movable portion using a support, generally U-shaped, known in the art. However, the cylinder sleeve is fixed using the present support, requiring that a support plate and a pair of orthogonal plates with holes be permanently fixed, preferably by welding, to the cylinder sleeve. The support, in turn, which is fixed to the movable portion of the boom or extension arm, comprises two orthogonal plates, each with a hole that houses the pin where the sleeve pivots, and a base for supporting the sleeve with its respective holes to house the connecting elements.

[0020]

[0013] This design allows for the installation of multiple extension mechanisms in a reduced space, optimizing the alignment between these and the booms, as well as reducing the total weight of the assembly. The solution also simplifies the assembly and maintenance process, minimizing the use of machined parts, resulting in a more economical alternative for lifting and moving loads.

[0021]

[0014] The hydraulic cylinder here is being used as a possible embodiment as an extension mechanism, as it is the device most commonly used in practice to extend and / or move and articulate telescopic or non-telescopic arms or booms. However, the present support can be used in conjunction with other mechanical, pneumatic, hydropneumatic extension mechanisms or other possible combinations.

[0022]

[0015] The term sleeve is used here to refer to the outer part or outer casing of the extension mechanism. Since the most commonly used extension and articulation mechanism today is the hydraulic cylinder, whose main body, a tube or cylinder, serves as an enclosure where the hydraulic fluid acts on the piston, and is normally called a sleeve, this term has been used in this description. However, the use of the term sleeve is not restricted to hydraulic cylinders.

[0023] Summary:

[0024]

[0016] The present Constructive Arrangement in Support of an Extension Mechanism comprises two parallel plates, each with a hole, joined by a front base, on which the adjustable support can be placed. In addition, the sleeve of the extension element has a flat lower support and a pair of orthogonal plates, each with a hole for fitting the central fixing pin. Field of Application:

[0025]

[0017] The application of the Constructive Arrangement in Extension Mechanism Support occurs as a support for hydraulic cylinders in equipment in general.

[0026] Advantages:

[0027]

[0018] The Constructive Arrangement in Extension Mechanism Support presents the following advantages:

[0028] • The support's compact design allows for the installation of multiple extension mechanisms in a smaller space, improving space efficiency and being especially useful for equipment such as truck-mounted cranes and crane trucks;

[0029] • By acting as a support that adjusts the alignment of the mechanism in relation to the boom, it helps maintain precision and operational efficiency, minimizing common misalignment problems;

[0030] • Reduced assembly time and effort required for installation, contributing to easier and faster installation;

[0031] • The construction method and the use of simple pins significantly reduce manufacturing costs, resulting in a more economical final product;

[0032] • The compact design of the supports allows them to be more rigid and resistant, enabling weight reduction and / or increased load capacity of the equipment.

[0033] Illustrations

[0034]

[0019] In order to facilitate research and provide understanding of the present patent, as set forth in the report, according to a basic and preferred embodiment developed by the applicant, reference is made to the attached illustrations, which form part of and support this descriptive report where: FIG. 01 - presents the perspective of the assembly, including the support, the extension mechanism in its initial position as a hydraulic cylinder and its fastening means;

[0035] FIG. 02 - presents an exploded view of the assembly, including the support, the extension mechanism as a hydraulic cylinder and its fastening means;

[0036] FIG. 03 - shows a side view of the assembly, including the support, the extension mechanism as a hydraulic cylinder and its fastening means;

[0037] FIG. 04 - shows a top view of the assembly, including the support, the extension mechanism as a hydraulic cylinder and its fastening means;

[0038] FIG. 05 - shows the front view of the assembly, including the support, the extension mechanism as a hydraulic cylinder and its fastening means;

[0039] FIG. 06 - shows a side view of the assembly illustrating the installation of several hydraulic cylinders in the same piece of equipment, as a possible implementation method;

[0040] FIG. 07 - presents the perspective of the extension mechanism as a hydraulic cylinder;

[0041] FIG. 08 - shows a side view of the extension mechanism as a hydraulic cylinder;

[0042] FIG. 09 - shows the front view of the extension mechanism as a hydraulic cylinder;

[0043] FIG. 10 - shows detail B;

[0044] FIG. 11 - presents an exploded view detailing the fastening between the support and the extension mechanism; FIG. 12 - presents a perspective view of an assembly showing the installation of several hydraulic cylinders in the same equipment, as a possible implementation method;

[0045] FIG. 13 - shows a front view of an assembly illustrating the installation of several hydraulic cylinders in the same piece of equipment, as a possible implementation method.

[0046] Description:

[0047]

[0020] The Constructive Arrangement in Extension Mechanism Support refers to the support (1) used for fixing an extension mechanism (2) in equipment used for lifting loads or other types of movement required in industrial automation. In a preferred embodiment, the support is used in conjunction with a hydraulic cylinder applied to cranes, vehicle cranes, truck-mounted cranes or similar equipment, with the objective of lifting loads through a set of telescopic opening arms or booms. Said equipment may contain one or more hydraulic cylinders.

[0048]

[0021] In other possible embodiments, the support can be used to fix other extending mechanisms, such as mechanical, hydropneumatic, pneumatic or others, with said extending mechanisms being applied in machines used for industrial automation or other types of equipment.

[0049]

[0022] The boom (4) is permanently fixed to the support (1), which serves as a support for the extension mechanism (2). The extension mechanism (2) is mounted on the support (1) by means of a pin (3), responsible for supporting the longitudinal load of the extension mechanism (2), with the lower support (6) responsible for absorbing the vertical load of the extension mechanism (2). The element here referred to as the boom (4) is normally found in vehicle cranes, but also refers to arms used in other equipment and machines.

[0023] The outer casing of the extension mechanism (2) is here referred to as the sleeve (5). If the extension mechanism (2) is a hydraulic cylinder, the sleeve (5) contains the hydraulic fluid responsible for moving the internal piston.

[0050]

[0024] The same equipment or boom (4) may contain several extension mechanisms, depending on the application. Figure 02 shows two extension mechanisms (2), the first extension mechanism (2) being fixed at two points:

[0051] - the shirt (5) is fixed to the fixed portion (4.1) of the lance (4) by the support (1), - the rod (8) is fixed to the movable portion (4.2) of the lance (4) by the support (9).

[0052]

[0025] The second extension mechanism (2) is fixed to two movable portions (4.2) of the boom (4), as an alternative.

[0053]

[0026] Actuating the extension mechanism (2) causes the movable part (4.1) of the boom (4) to extend to the desired position, depending on its stroke, since it is also fixed to the fixed portion (4.2) of the boom (4), in a telescopic movement.

[0054]

[0027] The shirt (5) comprises a flat lower support (6) and a pair of orthogonal plates (7), each with a hole, which are fitted into the inside of the support (1), so that said holes are aligned with the holes (1.1) and allow the central pin (3) to fit.

[0055]

[0028] The plates (7) must be positioned in the sleeve (5) in order to serve as a fixing point through the central pin (3), guaranteeing the mobility and alignment necessary for possible adjustments needed in the final assembly stage of all the booms (4).

[0056]

[0029] The central pin (3) allows the extension cylinder (2) to have slight movement, facilitating alignment adjustment during component assembly. At the bottom of the cylinder sleeve (5) is located the support (6) used to support the extension cylinder (2), preventing its movement. This support system allows for alignment adjustment of the extension cylinder (2) in relation to the boom (4) in the vertical direction, generally necessary due to possible deformations during the welding stage of the support (1).

[0057]

[0030] The support (1), in addition to being more compact than previous ones, is manufactured in such a way as not to exceed the width of the shirt (5), allowing the installation of multiple extension mechanisms (2) in a reduced space. The support (1) is formed by two parallel plates (1.1) each having a hole (1.2), joined by a front base (1.3), on which the adjustable support (11) can be placed, as needed.

[0058]

[0031] If the extension mechanism (2) is a hydraulic cylinder, the rod (8) is the moving part of the same responsible for transmitting the hydraulic force generated by the internal piston to perform the extension movement of the boom (4).

[0059]

[0032] The support (1) on its lower face has an adjustable support system (11) that allows aligning the extension mechanism (2) in relation to the boom (4), it has a screw (12) and a nut (13) to ensure that the extension movement occurs without misalignment. Said alignment is possible through the adjustable support (11) which functions as a wedge that can be added or removed as needed.

Claims

CLAIMS 1. CONSTRUCTIONAL ARRANGEMENT IN EXTENSION MECHANISM SUPPORT is characterized by the fact that the support (1) comprises two parallel plates (1.1), each having a hole (1.2), joined by a front base (1.3), on which the adjustable support (11) can be placed.

2. CONSTRUCTIONAL ARRANGEMENT IN EXTENSION MECHANISM SUPPORT according to claim 1 is characterized by the fact that the sleeve (5) has a flat lower support (6) and a pair of orthogonal plates (7), each with a hole for fitting the central pin (3).

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