KR100903947B1 - Low voltage supply system of Rubber Tired Gantry Crane used cable chain and carriage - Google Patents

Abstract

The present invention relates to a low-voltage power supply system of the RTGC using a cable chain and a bogie, which will be described in more detail by using an energy supply system of a container tire unloading equipment RTGC (Rubber Tired Gantry Crane) to reduce the cost It was made.

RTGC low voltage power supply system composed of the cable chain, chain guide and the balance of the present invention, the power supply is low voltage of 460V, easy to remove the connection when changing the lane (LANE) and the weight applied to the RTGC significantly compared to the conventional Not only is it less expensive, there is less investment, and especially if one RTGC is electrically damaged due to the use of a low voltage power supply, it does not affect the operation of the other RTGCs, which is very practical and economical.

RTGC, Cable Chain, Low Voltage Power Supply System

Description

Low voltage supply system of Rubber Tired Gantry Crane used cable chain and carriage}

The present invention relates to a low-voltage power supply system of the RTGC using a cable chain and the balance of the energy supply system as a cable chain method.

Conventional RTGC is a generator method using diesel, which has disadvantages such as an increase in the cost burden due to a rise in oil price. Thus, the land power supply system using a high-voltage cable reel has been known to be improved. It takes a lot of weight, and the weight of the RTGC equipment is about 6 tons, and the main power of 6600V is used in common, so when the electrical failure occurs on one RTGC, the main power is cut off due to sensitive cut-off operation such as a high-voltage relay, so that the entire RTGC cannot be operated. In order to solve the above problems, the present invention devised a land power supply system using a cable chain method.

The present invention relates to a low-voltage power supply system of the RTGC using a cable chain and a bogie, which will be described in more detail by reducing the cost and productivity by using the energy supply system of the container tire unloading equipment RTGC (Rubber Tired Gantry Crane) It is to increase the.

In the past, RTGC's energy supply system, which is a container unloading equipment installed in a port or a yard, was operated by using a generator method using oil, but this increased the cost burden due to rapid oil price as well as an increase in operating costs due to air pollution and frequent maintenance of the engine generator. As a result, the energy supply system was changed from oil to a land power supply system using a high voltage cable reel. However, the high voltage cable reel type uses a main power of 6,600 V, so that an electrical failure occurs in one RTGC. Due to the characteristics of the high voltage relay, the main power is cut off and the entire RTGC cannot be operated.In addition, a 6600V / 460V transformer is installed to convert the used voltage to every installed RTGC. Depending on the initial investment costs There was a problem such as required.

The present invention has been made to solve the above problems, the present invention is a low-voltage power supply system of RTGC composed of a cable chain, chain guide and bogie, using a low voltage power supply of 460V as a supply voltage, In addition, when the RTGC 10 is moved, the power connection part is in the horizontal direction due to the meandering operation of the RTGC 10, and in the vertical direction due to the error range of 80 cm outside and the tire vibration of the RTGC 10, respectively. Even when the RTGC 10 is separated by an error range of 30 cm, the bogie (4) absorbing the above-mentioned displacement range using the connecting rod 6 always moves linearly along the chain guide (1). By operating stably to prevent the separation of the RTGC (10) connected to the bogie (4), and also the upper end of the connection portion 6 and the fixed shaft (7) of the connection rod (6) angle detection sensor (purse encoder Release of RTGC (10) In addition to providing information to the equipment control unit in real time, using a low-voltage power supply, even if one RTGC (10) is an electrical failure does not affect the operation of the other RTGC using a cable chain and bogie A low voltage power supply system of an RTGC.

As described above, the present invention relates to a low-voltage power supply system of RTGC using a cable chain and a bogie, which can reduce energy costs by about 85 to 90% compared to a conventional method of operating a generator using oil. Compared to the cable reel method, the structure is simpler and the supply voltage of the power switchboard uses 460V branched low voltage. Therefore, if one RTGC has an electrical failure, it does not affect the operation of the other RTGC. Low voltage terminal wiring is easy to remove, and in case of failure due to breakage of supply system, the existing engine generator can be operated immediately by removing connecting rod and wiring, and the weight applied to RTGC can be pulled out compared to cable reel method. It is solved by the fixed bracket of about 500kg, and the structure is simpler than the cable reel method and the construction period can be shortened. In addition to reducing installation costs, it is possible to prevent damage due to accidents of the power supply device due to deviation during movement of the RTGC, which is a very economical and practical effect.

This will be described in detail with reference to the drawings as follows.

The present invention relates to a low-voltage power supply system of RTGC which is a device for unloading containers at a port or a yard.

형상으로 형성된 체인가이드(1)를 설치한 후, 상기한 체인가이드(1)의 요입홈(1a)속에 다수의 전원용 케이블(3)을 내장한 케이블 체인 (2)을 장입하고 상기 케이블 체인 (2)의 선단측에는 바퀴가 전·후양측에 각각 설치된 대차(4)를 설치하되 상기한 대차(4)의 선단측에는 상기한 수직축(5)을 설치하고 이 수직축(5)의 상부 외주연에는 좌우 및 상하 방향으로 피벗운동을 하도록 양단부에 스페리컬 베어링이 장착된 연결로드(6)의 일측단을 삽입하고, 상기한 연결로드(6)의 타단부와 체결되는 고정축(7)은 RTGC(10)의 일측 측면부에 연결 고정 설치되므로서 RTGC(10)의 이탈시에도 상기한 대차(4)는 연결로드를 이용하여 RTGC(10)의 변위를 흡수하여 체인가이드(1)를 따라 상기한 대차(4)가 직선운동을 하므로서 RTGC(10)가 기계적으로 안정하게 작동하게 하며, 상기 케이블 체인 (2)에 장입된 케이블(3)은 대차(4)의 선단측에서 인출되어 RTGC(10)의 배전반(8)에 연결되며 상기의 고정축(7)과 체결되는 연결로드(6)의 타측단 상단부에는 펄스 인코더(pulse encoder) 또는 리미트 스위치(limit switch)로 된 각도검출센서(pulse encoder)(9)를 부착하여 RTGC(10)의 이탈정도를 실시간에 측정하여 운전석의 전원제어부(미도시)에 전달하도록 구성한 것이다.On the ground where the RTGC 10 moves to unload containers at the port or yard (CY)

After installing the chain guide 1 formed in the shape, a cable chain 2 having a plurality of power cables 3 embedded therein is inserted into the recess 1a of the chain guide 1, and the cable chain 2 On the tip side of the wheel), the wheels 4 are installed on both front and rear sides, respectively, but the vertical axis 5 is installed on the tip side of the cart 4, and the left and right and One end of the connecting rod 6 having spherical bearings is inserted into both ends to pivot in the vertical direction, and the fixed shaft 7 which is engaged with the other end of the connecting rod 6 is RTGC 10. Since the trolley 4 is fixedly installed at one side of the side, even when the RTGC 10 is detached, the trolley 4 absorbs the displacement of the RTGC 10 by using a connecting rod and thus the trolley 4 along the chain guide 1. RTGC (10) is mechanically stable by the linear movement, the cable sieve The cable 3 inserted in the phosphor 2 is drawn out from the front end side of the trolley 4 and connected to the switchboard 8 of the RTGC 10 and connected to the fixed shaft 7 of the connecting rod 6. At the upper end of the other end, a pulse encoder or pulse switch 9 is installed to measure the deviation of the RTGC 10 in real time. It is configured to deliver.

RTGC's low voltage power supply system composed of RTGC (10) cable chain, chain guide and trolley etc. uses low voltage power of 460V which supply power is required and meander operation of RTGC 10 when the RTGC 10 is moved. The RTGC 10 is moved out of the error range of 80 cm inside and outside in the horizontal direction by deviation, or the RTGC 10 is within the error range of 30 cm vertically in the vertical direction due to the tire vibration of the RTGC 10. Even when the driving path is deviated, the connecting rod 6 between the vertical axis 5 of the trolley 4 and the fixed shaft 7 of the RTGC 10 absorbs the displacement of the RTGC 10, thereby allowing the trolley ( 4) is a linear movement along the chain guide (1) installed in a straight line so that the RTGC (10) can work safely, and the other end of the connecting rod (6) and the part of the fixed shaft (7) is fastened The upper end of the angle detection sensor (9) is equipped to provide the departure information in real time to the equipment control unit In addition, the use of low pressure does not affect the operation of the other RTGC 10 even if one RTGC 10 is electrically broken.

In the low-voltage power supply system of the RTGC 10 using the cable chain 2 and the cart 4 of the present invention, the movement of the RTGC 10 configured as described above requires the yaw of the chain guide 1. The cable chain (2) having a plurality of power cables (3) in the mouth groove (1a) is moved along the RTGC (10) as described above is a system for supplying the energy required for the operation of the RTGC (10) to a low voltage (460V) power supply. .

In particular, the low voltage power supply system of the present invention uses a low voltage branch voltage of 460V, unlike a conventional cable reel system using a main source voltage of 6,600V, so that when an electrical failure occurs in one of the supply voltage facilities, only the low voltage terminal breaker In operation, other electrical equipment can be unloaded and continue unloading. In particular, the low voltage power supply system of the present invention is simple in structure, light in weight applied to the RTGC, and can shorten the installation period, thereby reducing initial investment cost and shortening the air.

1 is a front view of the RTGC equipped with the present invention

Figure 2 is a side view of the RTGC equipped with the present invention

3 is an enlarged view of portion A of FIG.

Figure 4 is an embodiment of meandering operation of the connecting rod

※ Explanation of symbols for main parts of drawing

1-Chain guide 1a-Indentation 2-Cable chain 3-Cable

4-bogie 5-vertical shaft 6-connecting rod 7-fixed shaft

8-switch 9-angle detection sensor 10-RTGC

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Claims (2)

On the floor

After installing the chain guide 1 formed in the shape, a cable chain 2 having a plurality of power cables 3 embedded therein is inserted into the recess 1a of the chain guide 1, and the cable chain 2 The trolley 4 is installed at the tip side of the front side, but a vertical shaft 5 is installed at the tip side of the trolley 4, and one end of the connecting rod 6 is inserted at the upper outer periphery of the vertical shaft 5, Fixed shaft (7) coupled to the other end of the connecting rod (6) is connected to one side of the RTGC (10), the other end of the connecting rod (6) and the upper end of the portion where the fixed shaft (7) is fastened A detection sensor (9) is mounted, and the power cable (3) is drawn out from the tip side of the cart (4) and connected to the switchboard (8) of the RTGC (10) RTGC using a cable chain Low voltage power supply system. The spherical bearing is connected to both ends of the RTGC 10, even if the RTGC 10 deviates from an error range of 80 cm inside and outside in the horizontal direction and 30 cm each up and down in the vertical direction by meandering operation. As the rod 6 absorbs the displacement of the RTGC 10, the trolley 4 has a linear motion along the chain guide 1 installed in a straight line, so that the RTGC 10 can safely work. RTGC low voltage power supply system using cable chain and trolley.

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