VACUUM LEG SYSTEM FOR INCREASED STABILITY IN MOBILE CRANES.

Abstract

The invention is a vacuum leg system for increasing stability in mobile cranes, comprising at least one crane leg (4), at least one leg shoe (5) connected to the crane leg (4), at least one flexible vacuum chamber (1) made of a flexible material integrated into the leg shoe (5) and suitable for creating a vacuum zone by contacting the ground surface, at least one suction line (2) connected to the flexible vacuum chamber (1) and at least one vacuum source (3) which creates negative pressure by evacuating the air inside the flexible vacuum chamber (1) through the suction line (2).

Description

1 TARIFF VACUUM LEG SYSTEM FOR INCREASED STABILITY IN MOBILE CRANES. Technical Area The invention relates to a vacuum leg system for increasing stability in mobile cranes. State of the Art 5 Mobile cranes and lifting platforms, tipping that occurs during operation. It is traditionally opened to provide balance and stability against moments. It is equipped with supporting leg systems. In current technology, these legs are attached to the vehicle. by extending horizontally from its chassis and applying vertical pressure force to the ground It expands the base area and thus creates resistance against tipping over. (Statement 10) In these systems, stability depends solely on the pressure load applied by the feet to the ground. (compression force) is used to provide contact between the ground and the foot. It is maintained passively solely by the influence of gravity. This known approach in current technology has a significant shortcoming under certain operating conditions. It includes. A certain threshold of 15 for lifting load or dynamic operational forces. If it exceeds this limit, the resultant force on the supporting legs will be in the direction of pressure. It can reverse to the pulling direction. In this case, it depends only on the compressive force. Traditional, structured footing systems detach from the ground and compromise stability. is completely lost. In current technology, there is no active connection between the foot and the ground. any mechanism that provides resistance against tensile forces by forming 20 It is not present; accordingly, there is an integrated system where the ground is stressed in the tensile direction. No stabilization solution has been found. In conclusion, due to the negative aspects described above and the current solutions being the subject of discussion... Due to its shortcomings, an improvement is needed in the relevant technical field. It has been made. 25 Purpose of the Invention The invention was created by drawing inspiration from existing situations and overcoming the aforementioned drawbacks. It aims to solve the problem. 2 The main purpose of the invention is to replace traditional folding platforms on mobile cranes and lifting platforms. by expanding the functionality of the systems, both compressive and tensile forces A new stabilization system has emerged that can support the load and provide active grip with the ground. to place. To this end, the invention relates to the lower 5 supporting legs extending from the vehicle chassis. It is based on the principle of creating a controlled vacuum zone on the surface. Vacuum By creating a zone between the foot and the ground surface, the foot is only passive. not through compressive force, but through an active negative pressure force. It grips the ground; thus, it is also effective against forces applied in the pulling direction. Resistance is being created. 10 The technical problem solved by this invention is that traditional systems are by nature only one-way. This stems from the fact that it allows for the transmission of force. As is known, the existing In engineering, the moment the downward force on a supporting leg drops to zero, from that point... This is considered a technical indicator that the system has lost its stability. However, The vacuum foot system developed within the scope of the invention ensures that the loss of stability is much lower than this critical threshold. It allows for movement beyond that point. The destabilizing forces are on the ground. Since the pulling effect it creates will be counteracted by the vacuum force, the stability of the system is ensured. Not at the point where the compressive force is zero, but at the maximum tension that the vacuum can provide. It will truly end at the point where resistance is overcome. This approach, stability It structurally expands the margin of safety significantly. 20 Another aim of the invention is to create a compatible, integrated structure for existing supporting leg structures. The aim is to offer a solution. The invention is not limited to new cranes and platforms, but also includes existing ones. It can also be adapted to other equipment. Thus, the invention has a wide range of applications in the industry. It aims to contribute to reducing the risk of tipping over in the equipment range. In conclusion, the invention combines the vacuum principle with active adhesion to the ground, creating a dynamic 25 enabling safe operation even under operational conditions and based on the fundamental principles of current technology. An integrated stabilization and rollover prevention system that structurally overcomes its limitations. It offers a system. The structural and characteristic features and all the advantages of the invention are given in the figures below. Thanks to the detailed explanation written with references to these figures, 30 is understood more clearly. This will be understood, and therefore the evaluation should also take these forms and detailed explanations into consideration. It needs to be done by taking precautions. 3 Figures that will help understand the invention. Figure 1 shows a representative view of the system that is the subject of the invention. Explanation of Part References 1 Flexible vacuum chamber 2 Suction lines 5 3 Vacuum sources 4 Crane legs shoe Detailed Description of the Invention This detailed description explains that the invention, a vacuum foot 10, provides increased stability in mobile cranes. The system's preferred structures are solely aimed at a better understanding of the subject. This is explained as follows. The invention concerns a vacuum footing system used in mobile cranes and lifting platforms. It was developed to increase stability and prevent tipping, and basically... It consists of five main elements that form a functional whole with each other. These 15 The elements are, respectively, flexible vacuum chamber (1), suction line (2), vacuum source (3), crane leg (4) and are described as foot shoes (5). When the working principle of the system is examined, it is positioned at the lower end of the crane leg (4) flexible on the foot shoe (5) in a way that makes direct contact with the ground surface The vacuum chamber (1) is integrated. The flexible vacuum chamber (1) has a flexible 20 The material from which it is made, the roughness of the floor surface at the moment of vacuum application, and This allows it to adapt to the slope; thus, air flows across the contact surface. By minimizing leakage, an effective vacuum zone can be created. The aforementioned The flexibility feature allows the system to operate reliably in different ground conditions. It is important in this respect. 25 System activation is flexible via suction line (2) by vacuum source (3). This is achieved by evacuating the air inside the vacuum chamber (1). As a result of air evacuation, atmospheric pressure inside the flexible vacuum chamber (1) a pressure level is created below; at this point, the external atmospheric pressure and the elastic vacuum The difference in pressure between the reservoir (1) and the ground is an active force connecting the system to the ground. 4 It functions as follows: Based on an atmospheric pressure difference of approximately 1 bar, this force... its magnitude is the effective contact area of ​​the flexible vacuum chamber (1) with the resulting pressure difference It is calculated by multiplying. In this context, an effective contact area of ​​approximately 0.1 m². a flexible vacuum chamber (1) has a vacuum force of approximately 9 kN. it can produce a balancer of the order of 2.5 to 4 ton·meters. It is anticipated that a moment can be obtained. In traditional folding leg systems, the pressure force on one leg is zero. reaching that point means that, from a technical standpoint, the system is considered to have lost its stability. It opens. However, this threshold becomes dysfunctional when the vacuum foot system is activated. This is because the vacuum created between the shoe (5) and the ground provides pressure. Even after the initial force is reduced to zero, it kicks in and applies pulling forces. It creates active resistance against it. Destabilizing operational forces, flexible vacuum. as long as the system does not exceed the maximum suction capacity that its reservoir (1) can provide It continues to maintain its stability; this situation structurally provides a stability safety margin. and is expanding it measurably. The resulting 15 ton·meters are on the order of 2.5 to 4. The balancing moment value makes a significant contribution to preventing overturning. is being evaluated. After the operation is complete, a vacuum is used to deactivate the system. Air is drawn into the flexible vacuum chamber (1) by releasing the source (3) in a controlled manner. The inlet is provided, the vacuum force is eliminated with pressure equalization, and 20 The active connection of the crane leg (4) with the ground is terminated. This stage The system can then be freely detached from the ground surface.

Claims

REQUESTS 1. Mobile cranes have a vacuum leg system for increased stability; its feature is:  at least one crane leg (4),  at least one foot shoe (5) connected to the crane leg (4),  integrated into the foot pad (5) and vacuum by making contact with the ground surface 5 at least one made of a flexible material suitable for creating a zone flexible vacuum chamber (1),  at least one suction line (2) connected to the flexible vacuum chamber (1) and  evacuate the air inside the flexible vacuum chamber (1) via the suction line (2) at least one vacuum source (3) 10 which is used to create negative pressure It includes.

2. The system complies with Claim 1 and its feature is that the vacuum can be terminated and the crane leg can be lowered. (4) Flexible vacuum to enable the active connection with the ground to be disconnected It contains a vacuum source (3) that allows air to enter into the reservoir (1).

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