Converter oxygen lance hoisting auxiliary device

Abstract

The utility model discloses a converter oxygen lance hoisting auxiliary device which comprises a walking assembly and an oxygen lance protection assembly, and a buffer spring is arranged between the walking assembly and the oxygen lance protection assembly. The converter oxygen lance hoisting auxiliary device can effectively prevent a new oxygen lance nozzle from being rubbed and scratched in the hoisting process, the service life of the oxygen lance and the hoisting auxiliary device is prolonged, the cost of spare parts and the labor intensity are reduced, and meanwhile, the converter oxygen lance hoisting auxiliary device has the advantages of being high in efficiency, low in cost, safe and reliable.

Description

Technical Field

[0001] The utility model belongs to the technical field of converter steelmaking equipment, and specifically relates to a converter oxygen lance hoisting auxiliary device. Background Art

[0002] The oxygen lance is a key equipment in converter steelmaking. During the blowing process in the converter furnace, the oxygen lance nozzle is constantly flushed and soaked by the splashing high-temperature slag and metal droplets, which makes it very easy for the molten steel to adhere to the end face of the nozzle. With the accumulation of sticky steel, the thermal conductivity of the nozzle is damaged, and finally the nozzle is corroded and leaks, and can no longer be used and is forced to be taken offline for replacement.

[0003] In the prior art, a hoist is usually used to lift the new oxygen lance from the oxygen lance repair room to the hoisting hole of the converter platform in parallel, and then the hoist of the converter high-rise platform is used to lift the new oxygen lance vertically to the oxygen lance rack on the converter high-rise platform. If effective protection and auxiliary lifting measures are not taken for the new oxygen lance nozzle, during the lifting process of the oxygen lance, not only is the oxygen lance nozzle easy to fall to the ground and cause friction damage, but it is also very easy to collide with the hoisting hole guardrail, causing equipment damage.

[0004] The patent document with the authorization announcement number CN204401041 U discloses an oxygen lance transport auxiliary pulley, which mainly includes: a car body, a sliding mechanism and an oxygen lance fixing mechanism. The oxygen lance fixing mechanism includes a semicircular sleeve and a clamping ring. The two sides of the semicircular sleeve are connected to the through holes at the top of the two sides of the car body through a rotating shaft. The clamping ring is fixed to the opening side of the semicircular sleeve. The sliding mechanism includes an axle and a wheel. The two axles are respectively fixed to the front and rear ends of the two sides of the car body. The two protruding ends of the axles are respectively connected to the wheels. The pulley can slide along the tracks laid in the converter workshop and the maintenance workshop. The device is used to transfer the oxygen lance between the converter platform and the maintenance workshop at a short distance. When the oxygen lance is transferred from the converter workshop to the maintenance workshop, the converter workshop crane lifts the oxygen lance vertically, places the oxygen lance head in a semicircular sleeve, and locks it with a clamp ring. As the crane descends, the pulley slides along the track laid in the maintenance workshop under the gravity of the oxygen lance until the oxygen lance is placed horizontally and the clamp ring is released. Similarly, when the oxygen lance is transferred from the maintenance workshop to the converter workshop, the oxygen lance head is fixed in the pulley semicircular sleeve. As the large crane is lifted, the pulley slides along the track laid in the converter workshop until the oxygen lance is vertical and the clamp ring is released to complete the transfer. This device plays a good protective role for the oxygen lance nozzle during the commissioning of the new oxygen lance, but the device is not protective enough for the nozzle part, and it needs to lay a special track in the oxygen lance repair room for use, and the equipment cost investment is relatively high. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides a converter oxygen lance lifting auxiliary device, the purpose of which is to improve the applicability and service life of the equipment.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is: a converter oxygen lance lifting auxiliary device includes a walking assembly and an oxygen lance protection assembly, and a buffer spring is arranged between the walking assembly and the oxygen lance protection assembly.

[0007] A plurality of buffer springs are provided.

[0008] The traveling assembly comprises a wheel axle and two wheels arranged on the wheel axle, and the buffer spring is arranged on the wheel axle.

[0009] The wheel axles are provided with two, and the two wheel axles are parallel to each other.

[0010] The buffer springs are arranged between the two wheel axles and the oxygen gun protection assembly and the semicircular clamp.

[0011] The oxygen lance protection assembly includes an oxygen lance nozzle protection sleeve, one end of which is provided with a baffle for contacting the oxygen lance nozzle, and the other end of which is provided with a guide sleeve for guiding the oxygen lance into the oxygen lance nozzle protection sleeve.

[0012] The guide sleeve is a conical structure.

[0013] The converter oxygen lance lifting auxiliary device of the utility model can effectively prevent the new oxygen lance nozzle from being rubbed and scratched during the lifting process, thereby increasing the service life of the oxygen lance and the lifting auxiliary device, and reducing the spare parts cost and labor intensity. At the same time, the device has the characteristics of high efficiency, low cost, safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] This specification includes the following drawings, which show the following contents:

[0015] Figure 1 It is a side schematic diagram of the converter oxygen lance lifting auxiliary device of the utility model;

[0016] Figure 2 It is a front schematic diagram of the utility model converter oxygen lance lifting auxiliary device;

[0017] Figure 3 This is a schematic diagram of the use state of the utility model converter oxygen lance lifting auxiliary device;

[0018] Figure 4 It is a schematic diagram of the structure on one side of the anti-loosening washer;

[0019] Figure 5 It is a schematic diagram of the structure on the other side of the anti-loosening washer;

[0020] The markings in the figure are: 1. winch mechanism; 2. hook; 3. oxygen lance; 4. oxygen lance lifting auxiliary device; 401. baffle; 402. oxygen lance nozzle protection cover; 403. guide sleeve; 404. semicircular clamp; 405. locking device; 406. wheel; 407. gland; 408. gland bolt; 409. bearing; 410. lock nut; 411. wheel axle; 412. buffer spring; 413. fixing bolt; 414. first convex tooth; 415. second convex tooth. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the specific implementation methods of the utility model by describing the embodiments with reference to the accompanying drawings, with the aim of helping those skilled in the art to have a more complete, accurate and in-depth understanding of the utility model concept and technical solution of the utility model and facilitating its implementation.

[0022] It should be noted that, in the following embodiments, the “first” and “second” mentioned do not represent an absolute distinction in structure and / or function, nor do they represent a sequential order of execution, but are merely for the convenience of description.

[0023] like Figures 1 to 3 As shown, the utility model provides a converter oxygen lance lifting auxiliary device, including a semicircular clamp, a walking assembly and an oxygen lance protection assembly, a buffer spring 412 is arranged between the walking assembly and the oxygen lance protection assembly, and a plurality of buffer springs 412 are arranged, and the buffer spring 412 plays a role of buffering and shock absorption.

[0024] Specifically, if Figures 1 to 3 As shown, the travel assembly includes a wheel axle 411 and two wheels 406 arranged on the wheel axle 411, and a buffer spring 412 is arranged on the wheel axle 411. Two wheel axles 411 are arranged, and the two wheel axles 411 are parallel and have a certain distance between them. A total of four wheels 406 are arranged, and the four wheels 406 are distributed in a rectangular shape. A plurality of buffer springs 412 are arranged between one of the wheel axles 411 and the oxygen gun protection assembly, the oxygen gun protection assembly is located above the buffer spring 412, and the oxygen gun protection assembly and the buffer spring 412 are located between the two wheels 406. A plurality of buffer springs 412 are arranged between the other wheel axle 411 and the semicircular clamp, the semicircular clamp is located above the buffer spring 412, the semicircular clamp and the buffer spring 412 are located between the two wheels 406, and the semicircular clamp is used to clamp the oxygen gun. The device does not need to be equipped with a dedicated track. A buffering and shock-absorbing device is arranged between the wheel axle 411 and the oxygen lance nozzle protection cover 402 and the semicircular clamp 404, so that the lifting auxiliary device has rolling guide and buffering and shock-absorbing functions, thereby improving its applicability and equipment service life.

[0025] like Figures 1 to 3As shown, the oxygen lance protection assembly includes an oxygen lance nozzle protection sleeve 402, a baffle 401 for contacting the oxygen lance nozzle is provided at one end of the oxygen lance nozzle protection sleeve 402, and a guide sleeve 403 for guiding the oxygen lance into the oxygen lance nozzle protection sleeve 402 is provided at the other end of the oxygen lance nozzle protection sleeve 402. The oxygen lance nozzle protection sleeve 402 is a cylindrical structure with openings at both ends and a hollow interior. The inner diameter of the oxygen lance nozzle protection sleeve 402 is slightly larger than the diameter of the oxygen lance nozzle. The baffle 401 is used to close the opening at one end of the oxygen lance nozzle protection sleeve 402, and the baffle 401 plays a role in protecting the oxygen lance nozzle. The guide sleeve 403 is fixedly arranged at the opening at the other end of the oxygen lance nozzle protection sleeve 402.

[0026] As a preferred example, Figure 2 As shown, the guide sleeve 403 is a conical structure, and the guide sleeve 403 is coaxially fixedly connected with the oxygen lance nozzle protection sleeve 402. The small diameter end of the guide sleeve 403 is fixedly connected with the end of the oxygen lance nozzle protection sleeve 402, and the two have the same diameter. The large diameter end of the guide sleeve 403 is far away from the oxygen lance nozzle protection sleeve 402. The small diameter end and the large diameter end of the guide sleeve 403 are opposite ends on the axis of the guide sleeve 403. The diameter of the large diameter end is larger than that of the small diameter end, which is convenient for guiding the oxygen lance nozzle into the oxygen lance nozzle protection sleeve 402.

[0027] like Figure 1 and Figure 2 As shown, the diameter of the semicircular clamp 404 is substantially the same as the diameter of the oxygen lance. The semicircular clamp 404 is used in conjunction with the locking device 405 to tighten and prevent the lifting auxiliary device from slipping.

[0028] like Figure 1 and Figure 2 As shown, two wheel axles 411 are fixedly connected through a connecting plate, and the two wheel axles 411 are fixedly connected to the two ends of the connecting plate respectively. A semicircular support cavity is provided on the connecting plate to facilitate the support and placement of the oxygen gun, and the support cavity is located between the semicircular clamp 404 and the oxygen gun protection assembly. The wheel 406 is mounted on the wheel axle 411 through a bearing 409, and a gland 407 is provided on the wheel axle 411. The gland 407 is located on the outside of the bearing 409. The gland 407 is fixedly mounted on the wheel axle 411 through a gland bolt 408, and the gland 407 is fixed to the wheel axle 411 through a lock nut 410. The lock nut 410 is threadedly connected to the wheel axle 411, and the lock nut 410 is located on the outside of the gland 407.

[0029] like Figure 1 and Figure 2 As shown, the buffer spring 412 is fixed to the wheel shaft 411 by a fixing bolt 413. Preferably, an anti-loosening washer can be sleeved on the fixing bolt 413, and the anti-loosening washer is clamped between the buffer spring 412 and the head of the fixing bolt 413 to prevent loosening and ensure that the buffer spring 412 is fixed more securely. Figure 4 and Figure 5 As shown, the two side surfaces of the anti-loosening washer that are in contact with the buffer spring 412 and the head of the fixing bolt 413 are provided with convex teeth arranged in a ring shape, and the center of the anti-loosening washer is provided with a central hole for the rod of the fixing bolt 413 to pass through. When tightening the fixing bolt 413, since the anti-loosening washer is provided between the buffer spring 412 and the head of the fixing bolt 413, and the convex teeth are provided on the two side surfaces of the anti-loosening washer, under the action of the clamping force, the convex teeth can be respectively embedded in the head surface of the buffer spring 412 and the fixing bolt 413, and after the fixing bolt 413 is tightened with the nut, the anti-loosening washer can prevent the fixing bolt 413 from loosening. The hardness of the head of the fixing bolt 413 is generally greater than that of the buffer spring 412, so the number of the second convex teeth 415 on the side where the anti-loosening washer contacts the head of the fixing bolt 413 is greater than the number of the first convex teeth 414 on the side where the anti-loosening washer contacts the buffer spring 412. Since the hardness of the head of the fixing bolt 413 is large, the number of the second protruding teeth 415 is large, and more second protruding teeth 415 are embedded in the head surface of the fixing bolt 413, while the buffer spring 412 has a small hardness and only needs a small number of first protruding teeth 414, thereby improving the anti-loosening effect and ensuring reliable installation. The first protruding teeth 414 are radially distributed on the side of the ring on one side of the anti-loosening washer, and the second protruding teeth 415 are radially distributed on the side of the ring on the other side of the anti-loosening washer and cover the entire side. In addition, the first protrusion is in the shape of an elongated strip, and its cross section is rectangular, and the second protruding teeth 415 are also in the shape of an elongated strip, and its cross section is triangular, and the tip is facing the side of the head of the fixing bolt 413, so that the second protruding teeth 415 can be easily embedded in the head surface of the fixing bolt 413.

[0030] Since the converter oxygen lance lifting auxiliary device with the above structure was put into use, the following effects have been achieved:

[0031] (1) Effectively prevent the new oxygen lance nozzle from friction and scratches during the lifting process, increase the service life of the oxygen lance and lifting auxiliary devices, and reduce spare parts costs and labor intensity.

[0032] (2) The device can not only prevent the surface of the new oxygen lance from being scratched during the lifting process, but also play a buffering and guiding role when the offline oxygen lance is lifted to the maintenance workshop.

[0033] (3) The device has a simple structure, is easy to use, saves time and effort, and has a relatively low production cost.

[0034] Example 1

[0035] When a new oxygen lance of the converter needs to be put online, the new oxygen lance is first hoisted from the maintenance workshop to the hoisting hole position of the converter high-rise platform; then, the locking device 405 is rotated, the semicircular clamp 404 is opened, and the oxygen lance hoisting auxiliary device 4 is inserted from the oxygen lance nozzle to ensure that the oxygen lance nozzle is completely embedded in the oxygen lance nozzle protection cover 402, and the oxygen lance nozzle is in conflict with the baffle 401; then, the locking device 405 is tightened to fix the semicircular clamp 404 and the oxygen lance 3 firmly; finally, the new oxygen lance 3 is hoisted from the tail of the lance by the hoist hook 2 and the hoist winch 1 of the converter high-rise platform. When the hoisted oxygen lance 3 is about to leave the ground, the operator rotates the locking device 405, opens the semicircular clamp 404, and the oxygen lance hoisting auxiliary device 4 is separated and dropped from the oxygen lance 3 by itself, completing the hoisting operation of the new oxygen lance online.

[0036] Example 2

[0037] When the converter oxygen lance needs to be taken offline for maintenance, the offline oxygen lance is first hoisted from the gun rack on the converter high-rise platform to the hoisting hole position; then, the oxygen lance is slowly lowered, and when the oxygen lance nozzle is about to touch the ground, the oxygen lance hoisting auxiliary device 4 is inserted from the oxygen lance nozzle, the locking device 405 is rotated, and the semicircular clamp 404 is opened, and the oxygen lance nozzle is completely embedded in the oxygen lance nozzle protection cover 402; then, the locking device 405 is tightened to fix the semicircular clamp 404 and the oxygen lance 3 firmly; finally, the ground winch is used to cooperate with the high-rise platform hoist to pull the offline oxygen lance 3 horizontally, so that the state of the offline oxygen lance 3 changes from vertical to horizontal. When the offline oxygen lance body 3 is completely horizontal, the operator rotates the locking device 405, opens the semicircular clamp 404, separates and removes the oxygen lance hoisting auxiliary device 4 from the oxygen lance body 3, and completes the offline hoisting operation of the old damaged oxygen lance 3.

[0038] The above is an exemplary description of the utility model in conjunction with the accompanying drawings. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model; or the above concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. The converter oxygen lance lifting auxiliary device includes a walking assembly and an oxygen lance protection assembly, which is characterized by: A buffer spring is arranged between the walking assembly and the oxygen lance protection assembly.

2. The converter oxygen lance lifting auxiliary device according to claim 1, characterized in that: A plurality of buffer springs are provided.

3. The converter oxygen lance lifting auxiliary device according to claim 1, characterized in that: The traveling assembly comprises a wheel axle and two wheels arranged on the wheel axle, and the buffer spring is arranged on the wheel axle.

4. The converter oxygen lance lifting auxiliary device according to claim 3 is characterized in that: Two wheel axles are provided, and the two wheel axles are parallel.

5. The converter oxygen lance lifting auxiliary device according to claim 4, characterized in that: The buffer spring is arranged between the two wheel axles and the oxygen gun protection assembly and the semicircular clamp.

6. The converter oxygen lance lifting auxiliary device according to any one of claims 1 to 5, characterized in that: The oxygen lance protection assembly includes an oxygen lance nozzle protection sleeve, one end of which is provided with a baffle for contacting the oxygen lance nozzle, and the other end of which is provided with a guide sleeve for guiding the oxygen lance into the oxygen lance nozzle protection sleeve.

7. The converter oxygen lance lifting auxiliary device according to claim 6, characterized in that: The guide sleeve is a conical structure.

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