TESTING DEVICE FOR MOVABLE CRANE CABLES

Abstract

The invention relates to a test device that simulates the reciprocating motion of festoon cables used in mobile cranes under controlled conditions during operation. The test device comprises a drive carriage (1), at least one collector carriage (2) that enables the cable to be transported in a festoon arrangement, a final carriage (3), and a drive system that provides controlled reciprocating motion to the drive carriage. The system can be adapted to different cable lengths thanks to the ability to change the number of collector carriages according to the length of the cable to be tested. In the preferred application, linear motion is generated by a servo motor (13), a straight pinion gear (12), and a straight rack gear (6). This structure allows observation of the rotational, torsional, and / or knotting behavior of the cable during repetitive motion.

Description

1 TARIFF TESTING DEVICE FOR MOVABLE CRANE CABLES Technical Area The invention relates to cable trolleys (festoon trolleys) that are mounted on mobile cranes and transported. Simulate the effect that will be exerted on the cables used as power cables during the movement of the crane. 5 It is related to a testing device. State of the Art Festoon systems are particularly suitable for overhead cranes, gantry cranes, and similar mobile cranes. In lifting systems, electrical energy and control signals are transmitted to the moving parts. These are cable carrying systems that enable the transmission of electricity and control. cables are placed on cable carts that move along a conveyor line running along the crane. They are transported by being suspended (on festoon trolleys). As the crane moves, the cable trolleys are carried along the line. It moves along the system, and the cables unwind depending on the system's movement. They are collected. In this way, the cables are controlled together with the movable crane sections. The aim is to transport the cables in this manner and to maintain the continuity of the cable connections. 15 However, the constant back-and-forth movement of the system, the repetitive mechanical action of the cables... exposed to stresses and the emergence of various business problems over time This can cause it to come out. The main drawbacks encountered in festoon systems are the repeated bending of the cables and Exposure to tensile forces causes wear and cracks in the cable sheaths, 20 fatigue-related breakages in conductor wires and damage occurring at cable connections. These are damages. In addition, the uneven movement of the cable cars on the rail, the wheels and wear on bearings, entanglement of cable rings, or crane construction issues. Problems such as entanglement may occur. Especially at high speeds of movement, sudden movements acceleration and deceleration, wind effects in the external environment, and unsuitable cable 25 Their lengths can cause excessive oscillation of the cables and add extra strain on the support system. This can lead to mechanical stresses on the cables. shortens the service life, interrupts electrical energy or control signals. This leads to disruptions and increases the need for maintenance and repair, thus reducing crane performance. This causes problems. 30 2 As a result of research conducted on this subject, the code CN118961453A was encountered. The relevant code... This document relates to mobile crane cable systems and is used on mobile cranes. from simulating the bending movement of cables in a real working environment It is mentioned. However, the current technical cable can only be moved back and forth under controlled conditions. It does not include a testing device for testing by movement. 5 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. Purpose of the Invention The invention was created by drawing inspiration from existing situations and addressing the aforementioned drawbacks. 10 It aims to solve the problem. The main purpose of the invention is to create a test device that simulates the movement of a mobile crane. The purpose is to position it so that the cable moves during operation on the crane. The rotational movements and knotting in the cable were observed during the test. can be detected 15 The other purpose of the invention is to detect any twisting or knotting in the cable until The goal is to ensure the test continues. To fulfill the purposes described above, the invention is used in mobile cranes. By simulating the back-and-forth movement of festoon cables during operation, the cable's a 20 that allows observation of rotational, torsional and / or knotting behaviors It is a testing device, its feature is;  a cable that forms the initial connection and starting point of movement drive carriage,  at least one collector that enables the cable to be carried in a festoon configuration car, 25  a final carriage that forms the end point and reference of the cable, and  A drive system that provides controlled forward and backward movement to the drive carriage. It includes. 3 The structural and characteristic features and all the advantages of the invention are given in the figures below. This becomes clearer thanks to the detailed explanation written with references to these figures. This will be understood as such, and therefore the evaluation will also take these forms and detailed explanations into account. This should be done taking that into consideration. Figures to Help Understand the Invention 5 Figure 1 shows a general view of the testing device. Figure 2 shows a view of the drive cart, the collector cart, and the final cart. Explanation of Part References 1. Drive carriage 2. Collector cart 10 3. Final car 4. Support plate 5. Threaded lower block 6. Straight rack gear 7. Drive lever 15 8. Drive arm adapter 9. Engine base plate 10. Engine top plate 11. Stop sign 12. Straight pinion gear 20 13. Servo motor 14. Base 15. Base plate 4 Detailed Description of the Invention This detailed description outlines the preferred configurations of the test device that is the subject of the invention. This explanation is provided solely to facilitate a better understanding of the subject. The test device that is the subject of this invention, used in festoon systems shown in Figure 1, In its most basic form, the cable is tested by moving it back and forth under controlled conditions. 5 It is a device that enables this with a servo-controlled linear motion system. The movements of the cable are observed during operation on the crane using the test device. The test results can detect rotational movements and knots in the cable. Then, changes were made to the cable design, and the new design cable... The process continues by manufacturing and retesting the cable. This test checks any 10 of the cable. It continues until no twisting or knotting is observed. The mechanical components and operating principle of the test device, which is the subject of this invention, are as follows: The main support body of the device is mounted on the base (14) and base plate (15). This The structure ensures rigid and precise alignment of all mechanical elements. The straight rack gear (6), which forms the basis of the linear motion mechanism, gear bottom 15 It is fixed to the base plate (15) via the wedge (5). Thus, high precision A reliable reference line is established for linear motion. This is the source of the motion. A 3.5 kW – 3000 rpm servo motor (13) is mounted on the motor top plate (10). In order for the servo motor to carry the loads in a balanced manner, the motor base plate (9) It is supported. The motor base plate (9) also holds the motor on the sliding system 20 It enables precise linear positioning. The rotation of the servo motor The motion is transmitted to the straight rack gear (6) via the straight pinion gear (12) and Thus, the rotational motion of the motor is converted into linear reciprocating motion. The resulting linear motion is transmitted to the drive arm (7) via the drive arm adapter (8). It is transmitted. The drive lever (7) transmits the linear motion to the drive carriage (1) test 25 It activates the system. The mentioned drive carriage (1) is the first connection of the cable. and is the starting point of the movement. Controlled by the servo motor (13) The motion is transmitted from this drive carriage (1) to the cable. In the device that is the subject of the invention, the cable is then passed through the collector cars (2) The number of collector cars (2) is 30 depending on the length of the cable to be tested. By increasing or decreasing the cable lengths, the same system can be used with different cable lengths. Thus, the system can be used in various ways. It can adapt to test scenarios. The endpoint of the cable is the final vehicle. (3). The final car (3) is in a fixed position and does not move during the test. Thus While the other end of the cable is kept as a reference point, movement is only permitted when necessary. They are created in the regions. One application of the invention is that the test equipment is unaffected by mechanical vibrations. A support plate (4) is used for this purpose. This part connects the test device to the main 5 By keeping it at a certain distance from the structure, it reduces the risk of contact, supports the chassis, and It minimizes oscillations that may occur during movement. The invention is a... In its application, the stop plate (11) is placed at the movement limits for the safe operation of the system. The stop plate (11) prevents cars from going off the rails, thus both It ensures the safety of both the equipment and the operator. 10 In summary, thanks to the structure described above, the servo motor (13), straight pinion gear (12), Precision created by rack gear (6), drive lever (7) and drive lever adapter (8). linear motion via drive car (1), collector cars (2) and final car (3) It is applied to the cable in a controlled manner. Support plate (4), base structure and stop plate (11) ensures the system's sensitivity, mechanical strength and operational safety. 15 This increases [the potential of the invention], which can be easily adapted to different cable lengths. Servo-controlled, precise movement, reduced vibration, and safety features. A test device for reinforced, modular, festoon systems has been developed. is placed.

Claims

6 REQUESTS 1. The back-and-forth movement of festoon cables used in mobile cranes during operation. simulating the movement of the cable including rotation, twisting and / or knotting. It is a testing device that allows for the observation of behavior, and its feature is;  a 5 that forms the initial connection and starting point of movement of the cable drive car (1),  at least one collector that enables the cable to be carried in a festoon configuration car (2),  a final carriage that forms the end point and reference of the cable (3) and 10  a drive that provides controlled forward-backward movement to the drive carriage (1) It includes the system.

2. A test device conforming to Claim 1, the characteristic of which is; the drive system in question. It includes a servo motor (13) as the source of motion.

3. It is a test device that complies with claim 2, and its feature is; the rotation of the servo motor (13) 15 straight pinion gear (12) to convert its motion into linear forward-backward motion and includes a straight rack gear (6).

4. A test device conforming to claim 3, whose characteristic is; driving linear motion. Drive lever adapter (8) and drive lever (7) for transferring to the car (1) It includes. 20 5. A test device that meets any of the previous requirements, and whose feature is: testing The number of collector cars (2) can be increased according to the length of the cable to be made It is reducible.

6. A test device suitable for any of the previous requirements, whose characteristic is mechanical. Base (14) and base 25 which ensure rigid and precise alignment of the elements (15) is included.

7. A test device that meets any of the previous requirements, and whose feature is: testing by keeping the device at a certain distance from the existing construction, and the risk of contact. 7 Support plate (4) that reduces oscillations that may occur during movement It includes.

8. A test device suitable for any of the previous requirements, whose characteristic is: drive. derailment of the car (1), the collector car (2) and the final car (3) It contains a stop plate (11) that prevents blocking. 5

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