Anti-snapping induction device for electrical sliding towing cable of metallurgical ladle crane

Abstract

The invention relates to an anti-snapping induction device for an electrical sliding towing cable of a metallurgical ladle crane, and belongs to the technical field of special equipment. According to the technical scheme, a movable pull rod is connected with a movable separation blade; one end of the high-strength spring is connected with the movable separation blade, and the other end of the high-strength spring and the slideway trolley are connected to the fixing ring; the fixed separation blade is connected with the movable separation blade through an adjusting bolt; the fixed blocking piece and the movable blocking piece are connected with the positive electrode and the negative electrode of a 24V power source respectively, and the 24V power source is connected with a control power box. The device has the beneficial effects that by sensing and detecting the change of the tension in real time, the risk possibly causing tensile failure can be found in time, the occurrence of tensile failure accidents is avoided, and the safety and reliability of the crown block are improved; and analysis and statistics can be carried out according to specific data, so that a reference basis is provided for maintenance and management of the crown block, the service life of the crown block is prolonged, and the method is safe and effective and plays a positive role in promoting industrial production.

Description

Technical Field

[0001] The present invention relates to an anti-pulling-break induction device for an electrical sliding cable of a metallurgical casting crane, belonging to the technical field of special equipment. Background Art

[0002] In China, the types of beam and gantry cranes with electric hoists as the hoisting mechanism include electric single-girder suspension cranes, electric single-girder cranes, electric hoist double-girder cranes, and electric hoist gantry cranes, etc. When the electric hoist runs on the beam, a long cable is required for power supply, and the cable needs to move back and forth with the trolley. Usually, a towing rope is connected between two adjacent trolleys. The moving trolley fixes both the cable and the towing rope, and the towing rope plays a role in protecting the cable to prevent it from being pulled off. However, this structure requires the cable to be fixed, and the cable will be squeezed during fixation. There will be a section of cable between two adjacent moving trolleys. Usually, the weight of this section of cable itself will increase the wear at the fixing point of the cable and the moving trolley. At the same time, the movement of the cable itself will also generate a pulling force on the cable, thereby reducing the service life of the cable. Summary of the Invention

[0003] The purpose of the present invention is to provide an anti-pulling-break induction device for an electrical sliding cable of a metallurgical casting crane. By real-time sensing and detecting the change of the pulling force, it can timely discover the risk that may cause the cable to be pulled off, avoid the occurrence of pulling-off accidents, and improve the safety and reliability of the overhead crane. It can also analyze and statistically process specific data to provide a reference basis for the maintenance and management of the overhead crane, extend the service life of the overhead crane, which is safe and effective and plays a positive role in promoting industrial production, and effectively solves the above problems existing in the background art.

[0004] The technical solution of the present invention is: an anti-pulling-break induction device for an electrical sliding cable of a metallurgical casting crane, which includes a switch upper cover, a movable pull rod, an adjusting bolt, a high-strength spring, a fixed stop, a movable stop, a switch lower cover, and a pulling force sensor. The electrical sliding cable is fixed on the slide trolley, and both sides of the electrical sliding cable are respectively connected to the trolley control device and the control power supply box; the switch upper cover and the switch lower cover are tightly connected to form a switch housing, the fixed stop and the movable stop are installed inside the switch housing, and the movable pull rod is connected to the movable stop; one end of the high-strength spring is connected to the movable stop, and the other end is connected to the slide trolley on the fixed ring and wired in the control power supply box; the fixed stop is connected to the movable stop through the adjusting bolt; the fixed stop and the movable stop are respectively connected to the positive and negative poles of the 24V power supply, and the 24V power supply is connected to the control power supply box; the pulling force sensor is arranged at the fixed position of the electrical sliding cable.

[0005] It also includes an alarm indicator light, and the alarm indicator light is installed on the outer surface of the switch upper cover and is connected to the control power supply box.

[0006] It also includes a fixed pull rod which is installed at one end of the switch housing opposite to the movable pull rod.

[0007] The slideway crossbeam is an H-shaped steel structure. There is a chute inside its lower flange plate. Rollers are installed on both sides of the slideway trolley and are respectively placed in the chute. A metal hoop is provided at the lower part of the slideway trolley, and a rubber anti-slip pad is installed inside the metal hoop. The electrical sliding cable is fastened through the rubber anti-slip pad.

[0008] A hanging ring is provided on one side of the movable flap adjacent to the high-strength spring. The high-strength spring and the movable flap are hung through the hanging ring.

[0009] The switch upper cover and the switch lower cover are fastened by a hexagon socket head cap screw 1 with a specification of M10*20. The gap value between the switch upper cover and the switch lower cover is less than 0.05 mm.

[0010] The tension sensor is connected to the data acquisition and processing system through a wire, and a tension threshold is set on the data acquisition and processing system.

[0011] The beneficial effects of the present invention are as follows: By real-time sensing and detecting the change of tension, the risk that may cause breakage can be discovered in time, avoiding the occurrence of breakage accidents, and improving the safety and reliability of the overhead crane. It can also analyze and count according to specific data, providing a reference basis for the maintenance and management of the overhead crane, extending the service life of the overhead crane, being safe and effective, and playing a positive promoting role in industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the use state of the present invention; Figure 2 is a top view of the present invention; Figure 3 is a front view of the present invention; Figure 4 is a schematic diagram of the internal structure of the present invention; Figure 5 is a bottom view of the present invention; In the figure: switch upper cover 1, alarm indicator light 2, hexagon socket head cap screw 1 3, movable pull rod 4, hexagon socket head cap screw 2 5, fixed pull rod 6, adjusting bolt 7, high-strength spring 8, fixed flap 9, movable flap 10, switch lower cover 11, trolley control device 12, control power supply box 13. DETAILED DESCRIPTION OF THE INVENTION

[0013] In order to make the purpose, technical solution and advantages of the invention implementation cases clearer, the following will, in combination with the attached drawings in the implementation cases, clearly and completely describe the technical solutions in the implementation cases of the present invention. Obviously, the described implementation cases are a small part of the implementation cases of the present invention, rather than all of them. Based on the implementation cases in the present invention, all other implementation cases obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

[0014] A metallurgical casting crane electrical sliding cable anti-pulling and breaking induction device, comprising a switch upper cover 1, a movable pull rod 4, an adjusting bolt 7, a high-strength spring 8, a fixed stop 9, a movable stop 10, a switch lower cover 11 and a tensile sensor. The electrical sliding cable is fixed to the slideway trolley, and both sides of the electrical sliding cable are respectively connected to the trolley control device 12 and the control power supply box 13. The switch upper cover 1 and the switch lower cover 11 are firmly connected to form a switch housing. The fixed stop 9 and the movable stop 10 are installed inside the switch housing, and the movable pull rod 4 is connected to the movable stop 10. One end of the high-strength spring 8 is connected to the movable stop 10, and the other end is connected to the slideway trolley on the fixed ring and wired in the control power supply box 13. The fixed stop 9 is connected to the movable stop 10 through the adjusting bolt 7. The fixed stop 9 and the movable stop 10 are respectively connected to the positive and negative poles of the 24V power supply, and the 24V power supply is connected to the control power supply box 13. The tensile sensor is arranged at the fixed position of the electrical sliding cable.

[0015] It further comprises an alarm indicator light 2, and the alarm indicator light 2 is installed on the outer surface of the switch upper cover 1 and is connected to the control power supply box 13.

[0016] It further comprises a fixed pull rod 6, and the fixed pull rod 6 is installed at one end of the switch housing opposite to the movable pull rod 4.

[0017] The slideway cross beam is an H-shaped steel structure, and a chute is provided inside the lower flange plate thereof. Rollers are installed on both sides of the slideway trolley and are respectively placed in the chute. A metal hoop is provided at the lower part of the slideway trolley, and a rubber anti-slip pad is installed inside the metal hoop, and the electrical sliding cable is fastened through the rubber anti-slip pad.

[0018] One side of the movable stop 10 adjacent to the high-strength spring 8 is provided with a hanging ring, and the high-strength spring 8 is hung on the movable stop 10 through the hanging ring.

[0019] The switch upper cover 1 and the switch lower cover 11 are fastened by the first hexagon socket head cap screw 3, and the specification of the first hexagon socket head cap screw 3 is M10*20. The gap value between the switch upper cover 1 and the switch lower cover 11 is less than 0.05mm.

[0020] The tensile sensor is connected to the data acquisition and processing system through a wire, and a tensile threshold is set on the data acquisition and processing system.

[0021] In practical applications, the slideway crossbeam is made of H-shaped steel structure and is used for the movement of the slideway trolley; the electrical sliding cable is fixed on the slideway trolley; both sides of the electrical sliding cable are effectively connected to the trolley control device and the control power supply respectively; the switch upper cover 1 and the switch lower cover 11 are installed and fastened by the hexagon socket head cap screw M10*20 No. 3; the movable pull rod 4 and the movable stop piece 10 are effectively connected; one end of the high-strength spring 8 is hung on the hanging ring of the movable stop piece 10, and the other end is connected to the fixed ring on the slideway trolley and wired in the control power supply box; the fixed stop piece 9 is connected to the movable stop piece 10 by using the adjusting bolt 7.

[0022] The movable pull rod 4 and the movable stop piece 10 are connected together, and the high-strength spring 8 is connected to the movable stop piece 10. After each stretching of the movable pull rod, when the pulling force does not reach the prefabricated stretching force of the spring 8, the movable stop piece 10 and the fixed stop piece 9 are still in a connected state.

[0023] The present invention has a self-resetting function. After the movable pull rod 4 is stretched, when the pulling force decreases, due to the stretching of the high-strength spring 8, relying on the self-shrinking property of the high-strength spring 8, the movable pull rod 4 can be pulled back to its original position. Among them, the adjusting bolt 7 has the function of adjusting the prefabricated stretching force of the high-strength spring 8.

[0024] When the adjusting bolt 7 is screwed into the switch lower cover 11, the high-strength spring 8 is stretched by the movable stop piece 10, so that the prefabricated pulling force of the high-strength spring 8 increases. On the contrary, the prefabricated pulling force of the high-strength spring 8 decreases.

[0025] The present invention has a normally closed switch function. The fixed stop piece 9 and the movable stop piece 10 are respectively connected to the positive and negative poles of the 24V power supply. When the movable pull rod 4 is stretched due to the electrical sliding cable, the movable pull ring is elongated, so that the movable stop piece 10 is separated from the fixed stop piece 9, that is, the 24V power supply signal is disconnected. After giving a signal to the control power supply box and feeding back to the PLC, the walking power supply of the trolley control device is disconnected, ensuring that the electrical sliding cable no longer moves, so as to protect the electrical sliding cable and prevent accidents such as internal fracture of the cable due to excessive stretching of the electrical sliding cable.

[0026] The alarm indicator light 2 shows green under normal conditions, indicating that the device is used normally and the 24V signal power supply is not disconnected. When the 24V power supply, that is, when the movable stop piece 10 is disconnected from the adjusting bolt 7, the 24V power supply is disconnected, and the alarm indicator light 2 shows red and has a flashing warning function, prompting the spot inspector and the operator of the abnormal use of the electrical sliding cable, playing a warning role.

[0027] The tensile force sensor is connected to the data acquisition and processing system through a wire to transmit the collected data in real time.

[0028] Set a tensile threshold on the data acquisition and processing system, and judge whether the tensile force exceeds the threshold according to the real-time data. If the tensile force exceeds the threshold, promptly trigger the alarm indicator 2 and the emergency stop device to stop the operation of the overhead crane.

[0029] The above embodiments are only used to illustrate the design technical solutions of the present invention patent, and are not intended to limit it; although the present invention patent has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present patent.

Claims

1. An electrical sliding cable anti-pulling and breaking induction device for a metallurgical casting crane, characterized in that: It includes a switch upper cover (1), a movable pull rod (4), an adjusting bolt (7), a high-strength spring (8), a fixed stop (9), a movable stop (10), a switch lower cover (11) and a tension sensor. The electrical sliding cable is fixed to the slide trolley, and both sides of the electrical sliding cable are respectively connected to the trolley control device (12) and the control power supply box (13); the switch upper cover (1) and the switch lower cover (11) are firmly connected to form a switch housing, the fixed stop (9) and the movable stop (10) are installed inside the switch housing, and the movable pull rod (4) is connected to the movable stop (10); one end of the high-strength spring (8) is connected to the movable stop (10), and the other end is connected to the slide trolley on a fixed ring and wired in the control power supply box (13); the fixed stop (9) is connected to the movable stop (10) through the adjusting bolt (7); the fixed stop (9) and the movable stop (10) are respectively connected to the positive and negative poles of a 24V power supply, and the 24V power supply is connected to the control power supply box (3); the tension sensor is arranged at the fixed position of the electrical sliding cable.

2. The electrical sliding cable anti-pulling breakage induction device for a metallurgical casting crane according to claim 1, wherein: It further includes an alarm indicator light (2), and the alarm indicator light (2) is installed on the outer surface of the switch upper cover (1), and the alarm indicator light (2) is connected to the control power supply box (13).

3. An electrical sliding cable anti-pulling break induction device for a metallurgical casting crane according to claim 1, characterized in that: It further includes a fixed pull rod (6), and the fixed pull rod (6) is installed at one end of the switch housing opposite to the movable pull rod (4).

4. An electrical sliding cable anti-pulling break induction device for a metallurgical casting crane according to claim 1, characterized in that: The slide beam is an H-shaped steel structure, and a chute is provided inside the lower flange plate thereof. Rollers are installed on both sides of the slide trolley and are respectively placed in the chute; a metal hoop is provided at the lower part of the slide trolley, and a rubber anti-slip pad is installed inside the metal hoop, and the electrical sliding cable is fastened through the rubber anti-slip pad.

5. The electrical sliding cable anti-pulling and breaking induction device for a metallurgical casting crane according to claim 1, characterized in that: A hanging ring is provided on one side of the movable stop (10) adjacent to the high-strength spring (8), and the high-strength spring (8) is hung on the movable stop (10) through the hanging ring.

6. The electrical sliding cable anti-pulling and breaking induction device for a metallurgical casting crane according to claim 1, wherein: The switch upper cover (1) and the switch lower cover (11) are firmly fastened by hexagon socket head cap screws one (3), and the specification of the hexagon socket head cap screws one (3) is M10*20; the gap value between the switch upper cover (1) and the switch lower cover (11) is less than 0.05mm.

7. An electrical sliding cable anti-pulling breakage induction device for a metallurgical casting crane according to claim 1, characterized in that: The tension sensor is connected to the data acquisition and processing system through a wire, and a tension threshold value is set on the data acquisition and processing system.

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