Replacing device for backing ring bearing of converter

Abstract

The invention provides a converter backing ring bearing replacing device. The converter backing ring bearing replacing device comprises a supporting base and a plurality of jacking pieces. Each jacking piece comprises a telescopic rod, a connecting base and a supporting piece. The supporting base is of a frame structure with a preset height, and the jacking pieces can stretch out and draw back at the same time. The bottom of the telescopic rod is arranged on the top surface of the supporting seat; the connecting base comprises a connecting disc and connecting supporting arms arranged on the two sides of the connecting disc, the telescopic rod is inserted into the center of the connecting base, and the supporting pieces are inserted into the two sides of the connecting base. The height of the supporting seat is set to be consistent with the height of the backing ring bearing to be replaced, so that a hoisting replacement mode in the prior art is replaced, and higher safety is achieved. The plurality of jacking pieces are jacked at the same time, so that the mounting precision when the backing ring and the bearing are assembled is ensured, and the problem that the backing ring and the bearing are not concentric is solved. And through the arrangement of the connecting base, high-altitude falling after the supporting piece topples over is avoided. And through the arrangement of the cushion block, the adjusting range of the jacking piece is increased, and the application scenarios of the device are increased.

Description

Technical Field

[0001] The present application relates to the technical field of steel plant maintenance, and in particular to a device for replacing a converter support ring bearing. Background Art

[0002] The converters in existing stainless steel mills have a long service life, so the frequency of replacement of the support ring bearings in the converters has increased. For example, the old line of Baosteel Desheng Stainless Steel Mill has a total of 4 70t converters. As the equipment has been used for many years, the frequency of replacement of the support ring bearings has increased, and they need to be replaced about once every three years.

[0003] Before removing the converter support ring bearing, it is necessary to lift the U-shaped support ring in the air so that the converter support ring bearing is in a relaxed state, and then pull out the converter support ring bearing.

[0004] In the prior art, due to the high position of the converter support ring, there is a problem of difficulty in operation when lifting the U-shaped support ring in the air. There are also risks of falling objects and collapse in high-altitude operations, and it takes a huge amount of manpower and material resources. In addition, there is a problem of misalignment between the bearing sleeve and the bearing during the lifting of the U-shaped support ring, which will lead to problems such as difficulty in disassembly and replacement, and manual adjustment is required, which wastes time and is accompanied by various dangers.

[0005] In summary, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Summary of the invention

[0006] The purpose of the embodiments of the present application is to provide a replacement device for a converter support ring bearing, which can assist in completing the replacement of the bearing support ring and is safe and reliable.

[0007] The embodiment of the present application provides a replacement device for a converter support ring bearing, comprising:

[0008] A support base, wherein the support base is a frame structure and has a predetermined height;

[0009] A plurality of jacking members, each of which is disposed on the top surface of the support seat, and the plurality of jacking members can be extended and retracted simultaneously; each of the jacking members comprises:

[0010] A telescopic rod, the bottom of which is disposed on the top surface of the support seat;

[0011] The connecting seat comprises a connecting disc and connecting arms arranged on both sides of the connecting disc, wherein a first through hole is arranged at the center of the connecting disc, and the connecting disc is sleeved on the telescopic rod through the first through hole; the connecting arms are extended to both sides; and a second through hole is arranged on the connecting arms;

[0012] A support member is inserted into the second through hole and arranged parallel to the telescopic rod; the length of the support member is adjustable.

[0013] In one practicable manner, the support member includes a screw rod and a screw sleeve arranged up and down, an external thread section is provided at the top of the screw rod, a connecting hole is provided at the bottom of the screw sleeve, and an internal thread is provided on the inner wall of the connecting hole; the screw rod and the screw sleeve are connected by threads.

[0014] In one practicable manner, a rotation groove is provided on the outer wall of the wire sleeve.

[0015] In an operative manner, a rotary bearing is disposed on an outer wall of the screw rod or the screw sleeve, and the rotary bearing rotatably connects the support member and the connecting arm.

[0016] In one practicable manner, the support seat includes a transversely arranged crossbeam and a vertically arranged support beam, and a diagonal brace is provided between the crossbeam and the support beam.

[0017] In one practicable manner, the support base further includes a ladder disposed on the side.

[0018] In one practicable manner, one or more cushion blocks are sleeved on the top end of the telescopic rod.

[0019] In an practicable manner, the diameter of the cushion block is greater than the diameter of the telescopic rod; a slot is provided on the bottom surface of the cushion block, and the diameter of the slot is equal to the diameter of the telescopic rod.

[0020] In one practicable manner, a connecting boss is provided on the top surface of the cushion block, the diameter of the connecting boss is the same as the inner diameter of the slot, and the connecting boss is used to connect with the slot of the cushion block adjacent to the top.

[0021] In one practicable manner, the plurality of telescopic rods are telescopic rods of a hydraulic jack, and each of the telescopic rods is connected to a hydraulic system via an oil pipe;

[0022] The hydraulic system includes a flow divider and a solenoid valve for controlling the opening and closing of the flow divider. The solenoid valve is controlled to ensure that the same flow of hydraulic oil is introduced into the plurality of telescopic rods, thereby achieving synchronous telescopic extension and retraction.

[0023] Compared with the prior art, the beneficial effects of this application are:

[0024] In the technical solution of this application, by. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of a device for replacing a converter support ring bearing according to an embodiment of the present invention.

[0026] Figure 2 It is a structural schematic diagram of a support seat in a device for replacing a converter support ring bearing according to an embodiment of the present invention.

[0027] Figure 3 It is a structural schematic diagram of a connecting seat in a replacement device for a converter support ring bearing according to an embodiment of the present invention.

[0028] Figure 4 It is a structural schematic diagram of a support member in a device for replacing a converter support ring bearing according to an embodiment of the present invention.

[0029] Figure 5 The present invention is a schematic diagram of the assembly structure of the telescopic rod in the replacement device for the converter support ring bearing according to the embodiment of the present invention.

[0030] Figure 6 It is a structural schematic diagram of a cushion block in a device for replacing a converter support ring bearing according to an embodiment of the present invention.

[0031] The reference numerals are described as follows:

[0032] 1. Support seat; 11. Crossbeam; 12. Support beam; 13. Diagonal brace; 2. Lifting member; 21. Telescopic rod; 22. Connecting disc; 23. Support member; 231. Sleeve; 232. Screw rod; 233. Rotating groove; 24. Connecting arm; 25. Cushion block; 251. Connecting boss; 252. Slot; 26. Oil pipe; 3. Support ring. DETAILED DESCRIPTION

[0033] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Furthermore, in the description of the present invention, unless otherwise specified, “plurality” means two or more.

[0037] See also Figures 1 to 6 The present application provides a replacement device for a converter support ring bearing, comprising:

[0038] The support seat 1 is a frame structure and has a predetermined height. By setting the support seat 1, the height of the support seat 1 is set according to the height of the bearing support ring 3, and the lifting member 2 can be set at a position corresponding to the bearing support ring 3.

[0039] In this embodiment, the support base 1 has a length of 5 m, a width of 4.3 m, and a height of 6.2 m.

[0040] A plurality of jacking members 2, each of which is disposed on the top surface of the support seat 1, and the plurality of jacking members can be extended and retracted simultaneously; each of the jacking members 2 comprises:

[0041] A telescopic rod 21, the bottom of which is disposed on the top surface of the support seat 1;

[0042] The connecting seat comprises a connecting disc 22 and connecting arms 24 arranged on both sides of the connecting disc 22. A first through hole is arranged at the center of the connecting disc 22, and the connecting disc 22 is sleeved on the telescopic rod 21 through the first through hole; the connecting arms 24 are extended to both sides; and a second through hole is arranged on the connecting arms 24;

[0043] The support member 23 is inserted into the second through hole and arranged parallel to the telescopic rod 21; the length of the support member 23 is adjustable.

[0044] The present application provides a replacement device for a converter bearing support ring 3, which is safer by setting the height of the support seat 1 to be consistent with the height of the bearing support ring 3 to be replaced, so as to replace the hoisting replacement method in the prior art. By lifting multiple lifting members 2 at the same time, the installation accuracy of the support ring 3 and the bearing is guaranteed, and the problem of non-concentricity between the support ring 3 and the bearing is avoided. By setting a connecting seat, the telescopic rod 21 is connected to the support member 23, so as to avoid the support member 23 from falling from a high altitude after being tilted, thereby reducing safety hazards.

[0045] In one practicable manner, if Figure 4 As shown, the support member 23 includes a screw rod 232 and a wire sleeve 231 arranged up and down, an external thread section is arranged at the top of the screw rod 232, a connecting hole is arranged at the bottom of the wire sleeve 231, and an internal thread is arranged on the inner wall of the connecting hole; the screw rod 232 is connected to the wire sleeve 231 by a thread. By setting the support member 23 as a screw rod 232 and a wire sleeve 231 structure, the length of the support member 23 can be adjusted to adapt to the different lengths of the telescopic rod 21, and the telescopic rod 21 is assisted to support the support ring 3, thereby ensuring the lifting effect and improving the installation accuracy. In addition, by adopting the structure of the screw rod 232 and the wire sleeve 231, it can be ensured that the two components of the support member 23 remain coaxial during the length adjustment process, thereby ensuring the support effect and making the support more stable.

[0046] In one practicable manner, if Figure 4 As shown, the outer wall of the silk sleeve 231 is provided with a rotation groove 233, and after the operation part such as a wrench is connected to the rotation groove 233, the silk sleeve 231 is rotated. By setting the rotation groove 233, it is convenient to rotate the silk sleeve 231.

[0047] In an practicable manner, a rotation bearing is disposed on the outer wall of the screw rod 232 or the screw sleeve 231 , and the rotation bearing rotationally connects the support member 23 and the connecting arm 24 .

[0048] Specifically, the rotating bearing includes an outer sleeve and an inner sleeve that are rotatably connected. The outer sleeve of the rotating bearing is fixedly connected to the second through hole of the connecting arm 24, and the inner sleeve of the rotating bearing is fixedly connected to the threaded sleeve 231 or the screw rod 232 in the support member 23. By setting the rotating bearing, it is possible to ensure that the screw rod 232 or the threaded sleeve 231 rotates and retracts normally while preventing the threaded sleeve 231 or the screw rod 232 from falling from the second through hole.

[0049] In one practicable manner, if Figure 2As shown, the support seat 1 includes a horizontally arranged crossbeam 11 and a vertically arranged support beam 12, and a diagonal brace 13 is arranged between the crossbeam 11 and the support beam 12, and the diagonal brace 13 is used to increase the strength of the support seat 1. The specifications of the crossbeam 11 and the support beam 12 are determined according to the installation conditions of the support ring 3.

[0050] It should be noted that, in this embodiment, the cross beam 11 and the support beam 12 are both made of 40a H-shaped steel, and the diagonal brace 13 is made of 25# channel steel.

[0051] In one practicable manner, a ladder is provided on the side of the support base 1 , and the ladder is fixedly connected to the side of the support base 1 , so as to allow workers to climb to the top of the support base 1 to perform operations.

[0052] In one practicable manner, if Figure 5 As shown, one or more cushion blocks 25 are sleeved on the top of the telescopic rod 21. When the lifting height of the support ring 3 exceeds the adjustment range of the lifting member 2, the support ring 3 is supported by the support member 23, and after the lifting member 2 is retracted, a cushion block 25 of a predetermined thickness is sleeved on the telescopic rod 21 of the lifting member 2, and the lifting member 2 is lifted again to increase the adjustment range of the lifting member 2.

[0053] In one practicable manner, if Figure 6 As shown, the diameter of the cushion block 25 is greater than the diameter of the telescopic rod 21, so as to increase the contact area between the cushion block 25 and the support ring 3 and improve the stability of the support.

[0054] like Figure 6 As shown, a slot 252 is provided on the bottom surface of the cushion block 25, and the diameter of the slot 252 is equal to the diameter of the telescopic rod 21 of the lifting member 2. The slot 252 is sleeved on the top of the telescopic rod 21 to increase the adjustment range of the lifting member 2, so that the cushion block 25 and the telescopic rod 21 are kept coaxially arranged.

[0055] In one practicable manner, Figure 6 As shown, a connecting boss 251 is provided on the top surface of the cushion block 25, and the diameter of the connecting boss 251 is the same as the inner diameter of the clamping groove 252. The connecting boss 251 is used to connect with the clamping groove 252 of the cushion block 25 adjacent to the top. By providing the connecting boss 251 and the clamping groove 252, it is ensured that the multiple cushion blocks 25 are coaxially connected, and the stability of the multiple cushion blocks 25 after being stacked is increased.

[0056] In one practicable manner, if Figure 5As shown, the multiple telescopic rods 21 are telescopic rods 21 of hydraulic jacks, and each of the telescopic rods 21 is connected to the hydraulic system through an oil pipe 26. The hydraulic system includes a flow divider and a solenoid valve for controlling the opening and closing of the flow divider. The solenoid valve is controlled to ensure that the same flow of hydraulic oil is passed into the multiple telescopic rods 21, so as to perform synchronous extension and retraction.

[0057] It should be noted that the hydraulic system can be based on a programmable logic controller to control the solenoid valve to achieve automatic control of multiple lifting parts 2.

[0058] When this application is used, the following steps are included:

[0059] S1. Disassemble the converter, determine the height of the support seat 1 according to the converter conditions, and weld the support seat 1.

[0060] S2, such as Figure 2 As shown, a plurality of lifting members 2 are assembled on the top surface of the support seat 1 .

[0061] Specifically, the present embodiment includes four jacking members 2, and the four jacking members 2 are evenly distributed at the four corners of the support base 1. The operator can climb to the top of the support base 1 through a ladder, install the jacking member 2, and connect the oil pipe 26 to the jacking member 2.

[0062] S3. The telescopic rods 21 of the plurality of jacking members 2 are synchronously adjusted through the hydraulic system so that the top surfaces of the plurality of jacking members 2 are at a predetermined height. When the predetermined height is reached, a command is sent through the hydraulic system to close the solenoid valve and stop the flow of hydraulic oil. The plurality of jacking members 2 stop lifting and remain at the set height.

[0063] S4. Rotate the support member 23 so that the support member 23 and the lifting member 2 are arranged at the same height.

[0064] S5. Remove the tangential key of the converter, and lift out the reducer, the large gear and the bearing. After the bearing support ring 3 is disassembled, the bottom of the bearing support ring 3 is placed on the lifting member 2, so as to facilitate the replacement of the bearing.

[0065] In step S3, at least the following contents are included:

[0066] When the height of the lifting member 2 is less than the predetermined height, one or more cushion blocks 25 are arranged on the top of the telescopic rod 21 and are adjusted specifically according to the predetermined height.

[0067] It should be noted that when the lifting height of the telescopic rod 21 does not meet the height requirement, the bottom of the support ring 3 is supported by rotating the support member 23, the telescopic rod 21 is retracted, and a cushion block 25 of a predetermined thickness is sleeved on the telescopic rod 21, and then the telescopic rod 21 is lifted up.

[0068] It should also be noted that during the lifting process, the lifting conditions of each lifting member 2 should be monitored in real time. If the lifting speed or displacement of a lifting member 2 is found to be abnormal, the switch state of the solenoid valve should be adjusted in time through the hydraulic system to make corrections.

[0069] In summary, the present application provides a replacement device for a converter bearing support ring 3, which is safer by setting the height of the support seat 1 to be consistent with the height of the bearing support ring 3 to be replaced, so as to replace the hoisting replacement method in the prior art. By lifting multiple lifting members 2 at the same time, the installation accuracy of the support ring 3 and the bearing is guaranteed, and the problem of eccentricity between the support ring 3 and the bearing is avoided. By setting a connecting seat, the telescopic rod 21 is connected to the support member 23 to avoid falling from a high altitude after the support member 23 is tilted, thereby reducing safety hazards. By setting a cushion block 25, the adjustment range of the lifting member 2 is increased, and the application scenarios of the present application are increased.

[0070] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A replacement device for a converter support ring bearing, characterized in that: include: A support base, wherein the support base is a frame structure and has a predetermined height; A plurality of jacking members, each of which is disposed on the top surface of the support seat, and the plurality of jacking members can be extended and retracted simultaneously; each of the jacking members comprises: A telescopic rod, the bottom of which is disposed on the top surface of the support seat; The connecting seat comprises a connecting disc and connecting arms arranged on both sides of the connecting disc, wherein a first through hole is arranged at the center of the connecting disc, and the connecting disc is sleeved on the telescopic rod through the first through hole; the connecting arms are extended to both sides; and a second through hole is arranged on the connecting arms; A support member is inserted into the second through hole and arranged parallel to the telescopic rod; the length of the support member is adjustable.

2. The converter support ring bearing replacement device according to claim 1, characterized in that: The support member comprises a screw rod and a threaded sleeve arranged up and down, the top of the screw rod is provided with an external thread section, the bottom of the threaded sleeve is provided with a connecting hole, and the inner wall of the connecting hole is provided with an internal thread; the screw rod and the threaded sleeve are connected by threads.

3. The replacement device for converter support ring bearing according to claim 2, characterized in that: The outer wall of the wire sleeve is provided with a rotation groove.

4. The replacement device for converter support ring bearing according to claim 3, characterized in that: A rotating bearing is arranged on the outer wall of the screw rod or the screw sleeve, and the rotating bearing rotatably connects the support member with the connecting arm.

5. The converter support ring bearing replacement device according to claim 1, characterized in that: The support seat comprises a transversely arranged crossbeam and a vertically arranged support beam, and a diagonal brace is arranged between the crossbeam and the support beam.

6. The replacement device for converter support ring bearing according to claim 1, characterized in that: The support seat also includes a ladder arranged on the side.

7. The replacement device for converter support ring bearing according to claim 1, characterized in that: One or more cushion blocks are sleeved on the top end of the telescopic rod.

8. The replacement device for converter support ring bearing according to claim 7, characterized in that: The diameter of the cushion block is greater than the diameter of the telescopic rod; a slot is arranged on the bottom surface of the cushion block, and the diameter of the slot is equal to the diameter of the telescopic rod.

9. The replacement device for converter support ring bearing according to claim 8, characterized in that: A connecting boss is arranged on the top surface of the cushion block, the diameter of the connecting boss is the same as the inner diameter of the slot, and the connecting boss is used to connect with the slot of the cushion block adjacent to the top.

10. The replacement device for converter support ring bearing according to claim 1, characterized in that: The multiple telescopic rods are telescopic rods of a hydraulic jack, and each of the telescopic rods is connected to a hydraulic system via an oil pipe; The hydraulic system includes a flow divider and a solenoid valve for controlling the opening and closing of the flow divider. The solenoid valve is controlled to ensure that the same flow of hydraulic oil is introduced into the plurality of telescopic rods, thereby achieving synchronous telescopic extension and retraction.

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