Pulley Folding Mechanism

Abstract

The invention relates to a pulley folding mechanism that enables the pulley (600) located at the end of the telescopic main boom (300) of mobile cranes to be transported safely by folding it in the transfer position.

Description

1 TARIFF Pulley Folding Mechanism Technical Area The invention is a pulley folding mechanism used in telescopic booms of mobile cranes. It is related to. The invention specifically concerns the transfer of the pulley located at the end of the telescopic boom in mobile cranes. A pulley system that allows the hoist to be safely folded and transported in its current position. It is related to the mechanism. State of the Art 15 The pulley system used in telescopic boom systems employed in mobile cranes is used for lifting loads. It is one of the basic elements of lifting operations. In these types of cranes, the pulley system is used. When moving from the working position to the transfer position, usually near the boom tip It is held in place at this point by mechanical fastening elements. However, in current practices, 20 It is often possible to completely fix the pulley in its transfer position. This is not the case. Even though the pulley is attached to the boom end while the vehicle is in motion. However, it oscillates because it has a certain degree of freedom. This oscillation, physical contact with the boom body, cabin, or other structural elements on the vehicle. This can lead to contacts, resulting in both equipment damage and operational issues. This creates risks. In current systems, moving the hoist to the transfer position requires the operator to be careful and attentive. a laborious task that often requires the simultaneous intervention of multiple personnel It is a process. Bringing the pulley to the correct position and releasing the rope by the correct amount. 30 or steps such as wrapping and correctly positioning the fastening elements, This creates a process susceptible to human error. Therefore, the risk of workplace accidents for personnel is high. The probability is high, especially when manually manipulating heavy pulley blocks. During this process, risks such as being trapped, being struck, and falling arise. In addition, The hoist is positioned near the boom tip in the transfer position, crane 35 It restricts the operator's field of vision in the cabin. During transfer, the vehicle is cramped. 2 This limitation becomes even more pronounced when the vehicle needs to maneuver in these areas, and This makes safe driving more difficult. The reduced field of vision affects both the operator and... This negatively affects the safety of personnel in the surrounding area. In the current technology, there are 5 ways to reduce the volume occupied by the pulley in the transfer position. No solution has been found. The pulley hangs down from the boom end. Because it is moved, it increases both the overall height of the vehicle and the movement of the vehicle. during this time, there is a greater tendency to oscillate due to the effect of aerodynamic and dynamic loads. This is especially true when driving at high speeds or on uneven terrain. Increased vibration levels can lead to more serious safety issues. 10 Current techniques ensure that the pulley is precisely positioned during transfer. inability to secure it, inability to eliminate the risks of oscillation and collision, operator The field of vision is limited, and the pulley system fixing process is laborious and risky. It involves technical problems such as the inability to reduce the volume occupied by the pulley. This 15 These shortcomings reduce both operational efficiency and occupational safety. This poses significant risks. In conclusion, the existence of the above problems and the inadequacy of the current solutions, This has made it necessary to make improvements in the technical field. 20 Purpose of the Invention The present invention eliminates the aforementioned disadvantages and contributes to the relevant technical field. It relates to the pulley folding mechanism, which brings new advantages. 25 The main purpose of the invention is to replace the pulley located at the end of the telescopic boom in mobile cranes. A pulley system that allows the vehicle to be safely folded and transported during transfer. The goal is to create a folding mechanism. The purpose of the invention is to fold the hoist towards the boom axis in the transfer position, 30 A pulley system that minimizes the volume it occupies thanks to its positioning. The goal is to reveal the mechanism. Another objective of the invention is to allow the pulley to swing freely during transfer. a pulley system that eliminates the risk of collision with the boom and vehicle body by blocking them 35 The goal is to create a folding mechanism. 3 Another objective of the invention is to position the hoist parallel to the boom body in the transfer position and Thanks to its compact positioning, the field of vision in the operator's cab is improved. The goal is to develop a pulley folding mechanism that prevents its restriction. Another aim of the invention is to automate the processes required for securing the pulley. a pulley system that reduces operator intervention and simplifies the fastening process by introducing a pulley system. The goal is to create a folding mechanism. Another aim of the invention is to eliminate the need for manual steering of the pulley, making it 10 a system that reduces the risk of workplace accidents for the operator and / or personnel during transfer The goal is to develop a pulley folding mechanism. To fulfill all the objectives mentioned above and those that can be derived from the detailed explanation. The invention relates to 15 telescopic booms used in mobile cranes and connected to the crane chassis. vertical boom, hinged connection to the vertical boom and lifted by means of a lifting cylinder The telescopic main boom is raised and lowered, allowing for linear movement within the telescopic main boom. an extendable boom, and an extension cylinder that enables the forward and backward movement of the extension boom, a rope winder that enables the up-and-down movement of the payload rope on the vertical boom It has a pulley folding mechanism, 20 - a device attached to the extension boom that can perform rotational movement and carry the load. the pulley system that enables its movement fits inside and on the extension boom axis This is related to the fact that it contains a pulley slot that ensures it folds correctly. The structural and characteristic features and all the advantages of the invention are given in Figure 25 below. And thanks to the detailed explanation written with references to these figures, it becomes clearer. This will be understood as such. Therefore, the evaluation should also include these forms and detailed explanations. This should be done taking that into consideration. Figures to Help Understand the Invention 30 Figure 1: Perspective view of the pulley folding mechanism, which is the subject of the invention. Figure 2: The folding mechanism of the pulley system, the subject of the invention, in the open position. It is the appearance. Figure 3: The folding mechanism of the pulley system, the subject of the invention, with the pulley system in the closed position at 35°. It is the appearance. 4 Figure 4: The pulley folding mechanism in an alternative configuration of the invention. This is the appearance of the pulley in its open position. Figure 5: The pulley folding mechanism in an alternative configuration of the invention. This is the appearance of the pulley in its closed position. Explanation of Part References 100. Vertical boom 200. Lifting cylinder 300. Telescopic main boom 10 301. Extension boom 302. Extension cylinder 400. Rope winder 401. Rope 500. Pulley socket 15 600. Palanga Detailed Description of the Invention In this detailed description, the subject of the invention is the preferred 20 pulley folding mechanism. alternatives, solely for the purpose of better understanding the subject and without any limitations It is explained in a way that will not create an impact. Figure 1 shows a perspective view of the pulley folding mechanism that is the subject of the invention. It has been given. Accordingly, the pulley folding mechanism, in its most basic form, is attached to the crane chassis at 25°. The connected vertical boom (100) is connected to the vertical boom (100) in an articulated manner and lifts The telescopic main boom (300) which is raised and lowered by means of the cylinder (200), telescopic main Extension boom (301) that can move linearly within the boom (300), extension boom (301) Extension cylinder (302) that enables forward-backward movement, located on the vertical boom (100) Rope winder (400) that enables the up and down movement of the load rope (401), load 30 It sits inside the pulley (600) that enables its transport and the extension boom (301) It contains a pulley housing (500) that allows it to fold towards its axis. The vertical boom (100) positioned on the crane chassis, the telescopic main boom (300) and It serves as the main support element of the extension booms (301). Lifting 35 cylinders (200) are attached to the vertical boom (100) at one end and to the telescopic main boom (300) at the other end. It is arranged in such a way that the telescopic main boom (300) and the telescopic main boom (300) enables the raising and lowering of the attached extension booms (301). Telescopic Extension cylinder (302) located between the main boom (300) and extension booms (301), It performs the extension and closing movement of the extension booms (301). As shown in Figure 2, when the pulley (600) is in the closed position; the rope winder (400) winds the rope (401) when released, from the pulley socket (500) which is connected to the extension boom (301) rope (401) which is connected to the pulley (600) passing through the pulley (600) pulley together with the pulley (600) It has also released its nest (500) downwards. At this point the system has a gravitational acceleration It moves with the help of. Rope winder (400) continues to release rope (401) 10 When it does, the pulley (600) separates from the pulley housing (500). Rope winder (400) When the rope (401) is wound back, the pulley (600) becomes a pulley as shown in Figure 3. It sits inside its nest (500). When the rope winder (400) continues to rewind the rope (401), pulley (600) and 15 The pulley housing (500) folds up and becomes parallel with the telescopic main boom (300). An alternative configuration of the invention shows the pulley folding mechanism in Figures 4 and 5. As seen, vertical boom (100), lifting cylinder (200), extension boom (301), extension It can also operate without the cylinder (302). Vertical boom (100) and telescopic main boom (300) 20 It can be in an integrated monoblock structure. The pulley housing (500) is directly telescopic. It can be mounted on the main boom (300).

Claims

6 REQUESTS 1. Telescopic booms used in mobile cranes and telescopic main boom (300) extension boom (301) that can move linearly inside, extension boom (301) Extension cylinder (302) that enables forward-backward movement, load 5 on the vertical boom (100) containing rope winder (400) which enables the up and down movement of the rope (401). It has a pulley folding mechanism, the feature of which is; - capable of making rotational movement on the extension boom (301) into the pulley (600) which connects and enables the load to be carried 10 It contains a pulley housing (500) that provides.

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