Converter oxygen lance anti-falling trolley

Abstract

The utility model relates to an anti-falling trolley for a converter oxygen lance, which belongs to the technical field of converter steelmaking equipment and comprises an oxygen lance trolley and a transverse moving trolley, the oxygen lance trolley is positioned below the transverse moving trolley, an anti-falling device is arranged on the oxygen lance trolley, guide rails are respectively arranged on two sides of the oxygen lance trolley, and a plurality of anti-falling brake blocks are uniformly arranged on one side, close to the oxygen lance trolley, of each guide rail. According to the anti-falling device, the limitation that a traditional anti-falling device only plays a role when a steel wire rope is broken is broken through, under the condition that the steel wire rope or a connecting shaft is not broken, the reliability of the anti-falling process is greatly improved by means of a unique speed limiting induction and mechanical linkage anti-falling mechanism, and the anti-falling device has the advantages of being simple in structure, convenient to use and high in practicability. And the safety of equipment in the steelmaking production process can be effectively guaranteed, the economic loss is reduced, and the life safety of workers can be practically guaranteed.

Description

Technical Field

[0001] This utility model relates to a fall-prevention trolley, specifically a fall-prevention trolley for a converter oxygen lance, belonging to the technical field of converter steelmaking equipment. Background Technology

[0002] In steelmaking, the top-blown converter's double-winch oxygen blowing system uses a drum and wire rope to pull the oxygen lance lifting trolley to blow oxygen into the converter. However, during the smelting process, due to various reasons such as equipment aging and operational errors, lance falls often occur, which not only lead to unnecessary economic losses but may also endanger the lives of workers.

[0003] In the prior art, Chinese utility model patent application number CN201710455784.0 discloses an oxygen lance fall prevention device, which uses a guide rod, slide, return spring, and fall prevention block on the oxygen lance lifting trolley to prevent fall when the wire rope breaks. Another Chinese utility model patent application number CN202011569617.7 discloses a converter oxygen lance fall prevention trolley, which uses a main spring seat, fall prevention block, and fall prevention brake rod to stop the fall after the wire rope or connecting shaft breaks. However, these devices mainly rely on the fall prevention mechanism after the wire rope breaks. In actual production, however, not all oxygen lance lifting trolley falls are caused by wire rope breakage; therefore, the fall prevention reliability of these devices has limitations. Summary of the Invention

[0004] This utility model patent addresses the shortcomings of the prior art by providing a converter oxygen lance anti-fall trolley, which aims to achieve the following objectives: when the lifting speed of the oxygen lance trolley exceeds 10% to 30% of the rated speed without the wire rope or connecting shaft breaking, it can accurately and reliably achieve the anti-fall function, effectively ensuring the safety of equipment and the lives of workers in the steelmaking process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A converter oxygen lance anti-fall trolley includes an oxygen lance trolley and a transverse trolley. The oxygen lance trolley is located below the transverse trolley. The oxygen lance trolley is equipped with an anti-fall device. Guide rails are provided on both sides of the oxygen lance trolley. Several anti-fall brake blocks are evenly provided on the side of the guide rails closest to the oxygen lance trolley. Speed ​​limiters are provided on both sides of the upper part of the transverse trolley.

[0007] As a further improvement to the above technical solution:

[0008] The speed limiter is provided with a counterweight guide rail below it.

[0009] The fall protection device includes fall protection device frames respectively installed on both sides of the upper part of the oxygen lance trolley, with the two fall protection device frames arranged symmetrically.

[0010] Pins are inserted into the upper outer sides of the two fall arrestor frames, and the pins are inserted into the fall arrestor frames.

[0011] Two fall arrestor frames are each hinged with a fall arrestor brake rod. One end of the fall arrestor brake rod is located below the pin, and the pin presses down one end of the fall arrestor brake rod.

[0012] The other end of the anti-fall brake rod is connected to one end of the traction spring.

[0013] The other end of the traction spring is fixedly connected to the oxygen lance trolley.

[0014] A steel wire rope is fixedly connected to the upper end of the pin.

[0015] The wire rope is connected to the counterweight block via a speed limiter and a counterweight block guide rail.

[0016] The anti-fall brake rod and the anti-fall device frame are connected by a pin.

[0017] The present invention, by adopting the above technical solution, has the following advantages compared with the prior art:

[0018] This invention breaks through the limitation of traditional fall protection devices that only function when the wire rope breaks. Even if the wire rope or connecting shaft does not break, the unique speed limiting sensing and mechanical linkage fall protection mechanism greatly improves the reliability of the fall protection process. It can not only effectively protect the equipment safety in the steelmaking process and reduce economic losses, but also effectively protect the lives of workers.

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] Appendix Figure 1 This is a schematic diagram of the structure of a converter oxygen lance anti-fall trolley in an embodiment of this utility model;

[0021] Appendix Figure 2 This is a schematic diagram of the anti-fall device of a converter oxygen lance anti-fall trolley in an embodiment of this utility model;

[0022] Appendix Figure 3 It is attached Figure 2 Rear view;

[0023] Appendix Figure 4 This is a schematic diagram of the anti-fall brake lever of a converter oxygen lance anti-fall trolley in an embodiment of this utility model when it is opened.

[0024] In the diagram, 1-speed limiter, 2-wire rope, 3-pin, 4-shaft pin, 5-traction spring, 6-counterweight guide rail, 7-oxygen lance trolley, 8-counterweight, 9-lateral trolley, 10-fall protection device frame, 11-fall protection brake lever, 12-fall protection brake block, 13-guide rail. Detailed Implementation

[0025] Example: As attached Figure 1-4 As shown, a converter oxygen lance anti-fall trolley includes an oxygen lance trolley 7 and a transverse trolley 9. The oxygen lance trolley 7 is located below the transverse trolley 9. The oxygen lance trolley 7 is equipped with an anti-fall device. Guide rails 13 are provided on both sides of the oxygen lance trolley 7. Several anti-fall brake blocks 12 are evenly provided on the side of the guide rails 13 near the oxygen lance trolley 7. Speed ​​limiters 1 are provided on both sides above the transverse trolley 9. A counterweight guide rail 6 is provided below the speed limiters 1.

[0026] The fall arrestor includes two fall arrestor frames 10 respectively installed on both sides of the upper part of the oxygen lance trolley 7. The two fall arrestor frames 10 are symmetrically arranged. A fall arrestor brake rod 11 is hinged inside each of the two fall arrestor frames 10. A pin 4 is provided between the fall arrestor brake rod 11 and the fall arrestor frame 10, and the two frames are hinged by the pin 4. A pin 3 is inserted into the upper outer side of each of the two fall arrestor frames 10. One end of the fall arrestor brake rod 11 is located below the pin 3. The pin 3 prevents the fall arrestor from entering the frame. One end of the anti-fall brake lever 11 is pressed down, and the other end of the anti-fall brake lever 11 is connected to one end of the traction spring 5. The other end of the traction spring 5 is fixedly connected to the oxygen lance trolley 7. When the pin 3 presses down the anti-fall brake lever 11, the traction spring 5 is stretched and stores elastic potential energy. When the pin 3 is raised, the traction spring 5 releases elastic potential energy and contracts, causing one end of the anti-fall brake lever 11 to rise and the other end to press down. The anti-fall brake lever 11 changes to the open state and works in conjunction with the anti-fall brake block 12 to achieve the anti-fall function.

[0027] A steel wire rope 2 is fixedly connected to the upper end of the pin 3. The steel wire rope 2 is fixedly connected to the counterweight 8 via the speed limiter 1 and the counterweight guide rail 6. When the oxygen lance trolley 7 moves up and down normally, the counterweight 8 is pulled up and down smoothly within the counterweight guide rail 6 by the steel wire 2, which effectively avoids collision problems caused by shaking and ensures the stability of the entire speed sensing system.

[0028] As the oxygen lance carriage 7 descends or ascends at an increasingly faster speed, the steel wire rope 2 drives the internal pulley of the speed limiter 1 to rotate at a correspondingly higher speed. When the speed of the oxygen lance carriage 7 reaches 110% to 130% of the preset rated speed value of the speed limiter 1, the speed limiter 1 brakes the steel wire rope 2, thereby causing the pin 3 to be pulled out of the anti-fall device frame 10. After the pin 3 is pulled out, the traction spring 5 instantly changes from a stretched state storing elastic potential energy to a contracted state releasing elastic potential energy, instantly opening the anti-fall brake lever 11, which, together with the anti-fall brake block 12, stops the oxygen lance carriage 7.

[0029] During normal operation, the wire rope 2 is connected to the pin 3, and the wire rope 2 is in a near-tight state. To prevent the pin 3 from being pulled out during normal operation, a baffle with a certain resistance is provided on the anti-fall device frame 10.

[0030] This invention breaks through the limitation of traditional fall protection devices that only function when the wire rope breaks. Even if the wire rope or connecting shaft does not break, the unique speed limiting sensing and mechanical linkage fall protection mechanism greatly improves the reliability of the fall protection process. It can not only effectively protect the equipment safety in the steelmaking process and reduce economic losses, but also effectively protect the lives of workers.

[0031] Finally, it should be noted that the above descriptions are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. The examples of implementation methods, and the parts not described in detail, are all common knowledge to those skilled in the art. Those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A converter oxygen lance anti-falling trolley, characterized in that: Including oxygen lance trolley (7) and horizontal moving trolley (9), oxygen lance trolley (7) is located below horizontal moving trolley (9), oxygen lance trolley (7) is equipped with anti-falling device, both sides of oxygen lance trolley (7) are respectively equipped with guide rail (13), the side close to oxygen lance trolley (7) of guide rail (13) is uniformly equipped with several anti-falling brake blocks (12), the upper side of horizontal moving trolley (9) is respectively equipped with speed limiter (1).

2. The converter oxygen lance anti-falling trolley according to claim 1, characterized in that: The lower side of the speed limiter (1) is equipped with a counterweight guide rail (6).

3. The converter oxygen lance anti-falling trolley according to claim 2, characterized in that: The anti-falling device includes anti-falling device frames (10) arranged on both sides of the upper side of the oxygen lance trolley (7), and the two anti-falling device frames (10) are symmetrically arranged.

4. The converter oxygen lance anti-falling trolley according to claim 3, characterized in that: The outer sides of the upper sides of the two anti-falling device frames (10) are respectively inserted with latches (3), and the latches (3) are inserted into the anti-falling device frames (10).

5. The converter oxygen lance anti-falling trolley according to claim 4, characterized in that: The inner sides of the two anti-falling device frames (10) are respectively hingedly connected with anti-falling brake rods (11), one end of the anti-falling brake rods (11) is located below the latches (3), and the latches (3) press down one end of the anti-falling brake rods (11).

6. The converter oxygen lance anti-falling trolley according to claim 5, characterized in that: The other end of the anti-falling brake rods (11) is connected with one end of a traction spring (5).

7. The converter oxygen lance anti-falling trolley according to claim 6, characterized in that: The other end of the traction spring (5) is fixedly connected with the oxygen lance trolley (7).

8. The converter oxygen lance anti-falling trolley according to claim 4, characterized in that: The upper end of the latch (3) is fixedly connected with a steel wire rope (2).

9. The converter oxygen lance anti-fall trolley according to claim 8, characterized in that: The steel wire rope (2) is fixedly connected with a counterweight (8) in sequence through the speed limiter (1) and the counterweight guide rail (6).

10. The converter oxygen lance anti-fall trolley according to claim 5, characterized in that: A pin shaft (4) is arranged between the anti-falling brake rod (11) and the anti-falling device frame (10), and the pin shaft (4) is hingedly connected.

Images