A device for replacing heat radiation tubes of steel rolling heating furnace

Abstract

The present application relates to the field of steel rolling machinery, and specifically, to a device for replacing heat radiation tubes of a steel rolling heating furnace, comprising a lower guide rail and an upper guide rail, wherein the two opposite sides of the outer side surface of the lower guide rail are provided with a plurality of groove wheels, and at least two X-shaped scissor frames are provided between the upper guide rail and the lower guide rail, wherein the scissor frames are telescopically used to drive the upper guide rail to rise and fall, wherein the upper guide rail is provided with a driving member for driving the scissor frames to telescope, wherein a bearing seat is rotatably provided at the top of the upper guide rail, wherein a rolling frame is provided at the top of the bearing seat, wherein a plurality of rolling wheels are provided on the rolling frame, and wherein the plurality of rolling wheels are used to support the radiation tube. The utility model has the technical effect of facilitating the replacement of the radiation tube.

Description

Technical Field

[0001] The present application relates to the field of steel rolling machinery, and in particular to a device for replacing heat radiation tubes of a steel rolling heating furnace. Background Art

[0002] The heating method of the non-oxidizing roller bottom heating furnace is that the flame generated by the burner enters the inner tube of the radiation tube, and is heated by indirect heating through the radiation tube. Its heating components are mainly composed of radiation tube, burner and inner tube, and the inner tube and burner are installed inside the radiation tube. In daily production, when the gas and air ratio is abnormal, the inner tube will be broken, or when the radiation tube is placed in the same position for a long time, due to the continuous burning at high temperature, the radiation tube will be adhered or burned through and cannot be used anymore, and it is difficult to remove and install.

[0003] The heat treatment furnace is nearly closed in structure. The working temperature of most radiation tubes in the furnace is 480-920℃. Long-term high-temperature operation and the above problems occur. Every once in a while, they need to be overhauled and replaced. Since the radiation tubes are heavy and the position in the furnace is inconvenient, they need to cooperate with the overhead crane. The personnel outside the furnace need to lift and pry the tubes. The personnel inside the furnace need to carry them on their shoulders or backs. It often takes 6-8 people and 2-3 hours to replace a tube, which is time-consuming, labor-intensive, and increases the safety risk factor. During the replacement of radiation tubes, there are problems such as the need for multiple people to work together, slow work efficiency, high work intensity, and many safety hazards. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a device for replacing the heat radiation tube of a steel rolling heating furnace, which can solve the technical problems of low working efficiency, high strength and many safety hazards of the radiation tube during the replacement process.

[0005] The embodiment of the present application provides a device for replacing heat radiation tubes of a steel rolling heating furnace, which adopts the following technical solution:

[0006] A device for replacing heat radiation tubes in a steel rolling heating furnace comprises a lower guide rail and an upper guide rail, a plurality of groove wheels are arranged on opposite sides of the outer side surface of the lower guide rail, at least two X-shaped scissor frames are arranged between the upper guide rail and the lower guide rail, the scissor frames are telescopically extended to drive the upper guide rail to rise and fall, the upper guide rail is provided with a driving member for driving the scissor frames to telescope, a bearing seat is rotatably arranged on the top of the upper guide rail, a rolling frame is arranged on the top of the bearing seat, a plurality of rolling wheels are arranged on the rolling frame, and the plurality of rolling wheels are used to support radiation tubes.

[0007] Furthermore, the scissors frame includes a first connecting rod and a second connecting rod, a rotating shaft is connected between the first connecting rod and the second connecting rod, two ends of the first connecting rod are respectively provided with a lower fixed shaft and an upper follower shaft, the end of the lower fixed shaft is rotatably connected to the side wall of the lower guide rail, the upper follower shaft is provided with an upper roller, and the upper roller is rollingly connected to the upper guide rail, and two ends of the second connecting rod are respectively provided with an upper fixed shaft and a lower follower shaft, the end of the upper fixed shaft is rotatably connected to the side wall of the upper guide rail, the lower follower shaft is provided with a lower roller, and the lower roller is rollingly connected to the lower guide rail.

[0008] Furthermore, a mounting block is disposed on the upper fixed shaft, a driving block is disposed on the upper follower shaft, and the driving member includes a screw rod rotatably disposed on the mounting block, and the screw rod is threadedly connected to the driving block.

[0009] Furthermore, a crank is provided at the end of the screw rod.

[0010] Furthermore, a lower base plate is provided on the top of the upper guide rail, and guide sleeves are fixedly provided at the four end corners of the lower base plate. An upper base plate is provided on the top of the lower base plate, and the guide sleeve movably passes through the upper base plate. An adjusting coil spring is movably sleeved on the guide sleeve, and both ends of the adjusting coil spring are respectively fixedly connected to the lower base plate and the upper base plate, and the bearing seat is rotatably provided on the top of the upper base plate.

[0011] Furthermore, the top end of the guide sleeve is threadedly connected with a limiting bolt.

[0012] Furthermore, guardrails are provided on two opposite sides of the rolling frame.

[0013] Furthermore, a fastening bolt is threadedly connected between the rolling frame and the bearing seat.

[0014] Beneficial effects of the utility model:

[0015] The tube replacement device provided by the utility model greatly reduces the friction of pulling out the radiation tube, reduces the wear and tear of the hanging parts, and saves the potential safety hazards caused by manual shoulder-carrying and back-carrying sticks. After the burner of the radiation tube installed on the outside of the heating furnace is removed, the radiation tube is pulled out by a wire rope in cooperation with the overhead crane. When a new radiation tube is installed, the principle is the same as above, and the process is reversed. The utility model has strong practicality and can realize load, movement and precise adaptive adjustment functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0018] Figure 2 It is a side schematic diagram of an embodiment of the utility model;

[0019] Figure 3 It is a front schematic diagram of an embodiment of the utility model;

[0020] Figure 4 A top view of an embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the limit rail structure of an embodiment of the utility model;

[0022] Figure 6 This is a schematic diagram of the structure behind the hidden heating furnace of one embodiment of the utility model;

[0023] Figure 7 This is an exploded schematic diagram of an embodiment of the utility model;

[0024] Figure 8 This is an exploded schematic diagram of an embodiment of the utility model;

[0025] The reference numerals in the drawings are as follows: 1. limit rail; 2. web; 3. turn pin; 5. groove pulley; 6. V-belt; 7. lower guide rail; 8. lower fixed shaft; 10. lower follower shaft; 11. scissors frame; 12. rotating shaft; 13. upper roller; 14. crank; 15. upper fixed shaft; 16. lead screw; 19. upper follower shaft; 20. upper guide rail; 21. lower base plate; 22. upper base plate; 23. guide sleeve; 24. adjusting coil spring; 25. limit bolt; 26. positioning shaft; 27. end bearing; 28. fastening bolt; 29. ​​bearing seat; 30. rolling frame; 31. guardrail; 32. heating furnace; 33. radiation tube; 34. roller table. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0029] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] The present application embodiment discloses a device for replacing heat radiation tubes of a steel rolling heating furnace, referring to Figure 1-8 , including a lower guide rail 7 and an upper guide rail 20, a plurality of groove wheels 5 are installed on opposite sides of the outer side of the lower guide rail 7, one end of the groove wheel 5 is rotatably supported on the outer side wall of the lower guide rail 7, and two X-shaped scissor frames 11 are arranged between the upper and lower guide rails 7. The scissor frame 11 includes a first connecting rod and a second connecting rod, and a rotating shaft 12 is rotatably connected between the middle of the first connecting rod and the second connecting rod. The first connecting rod and the second connecting rod rotate freely around the rotating shaft 12, and the two ends of the first connecting rod are respectively fixed in the horizontal direction. A lower fixed shaft 8 and an upper follower shaft 19 are installed, the end of the lower fixed shaft 8 is rotatably supported on the inner wall of the lower guide rail 7, the upper follower shaft 19 is coaxially fixedly installed with an upper roller 13, and the upper roller 13 is rollingly connected to the upper guide rail 20. The two ends of the second connecting rod are respectively fixedly installed with an upper fixed shaft 15 and a lower follower shaft 10 in the horizontal direction, the end of the upper fixed shaft 15 is rotatably supported on the inner wall of the upper guide rail 20, and the lower follower shaft 10 is coaxially fixedly installed with a lower roller, and the lower roller is rollingly connected to the lower guide rail 7.

[0033] A mounting block is fixedly mounted on the upper fixed shaft 15, a driving block is fixedly mounted on the upper follower shaft 19, and a driving member for driving the scissors frame 11 to extend and retract is arranged on the upper guide rail 20. Specifically, the driving member includes a screw rod rotatably arranged on the mounting block. The screw rod is arranged in a horizontal direction, and one end of the screw rod is rotatably supported on the side wall of the mounting block. The screw rod is threadedly connected to the driving block. When the operator rotates the screw rod, the screw rod drives the driving block to move toward or away from the mounting block, thereby driving the scissors frame 11 to extend and retract, thereby driving the upper guide rail 20 to rise and fall. At the same time, in order to facilitate the rotation of the screw rod, a crank 14 is fixedly mounted on the end of the screw rod.

[0034] A plurality of rollers are installed in the heating furnace. Two mutually parallel limit rails 1 are arranged at the bottom of the lower guide rail 7. The groove wheel 5 is rollingly connected to the limit rail 1. The two limit rails 1 are connected by the web 2. The ends of the web 2 are connected to the limit rail 1 by connecting bolts. The two webs 2 are installed in a scissor shape and connected by a swivel pin 3. When working, the replacement device needs to be moved into the heating furnace. The limit rail 1 is used to bear the load transmitted by the replacement device. At the same time, a V-belt 6 is connected between the multiple groove wheels 5 on the same side of the lower guide rail 7. The multiple groove wheels 5 are located in the V-belt 6, and the V-belt 6 is wrapped and connected to the multiple groove wheels 5, so as to realize the walking of the replacement device on the roller with spacing.

[0035] In addition, a lower base plate 21 is provided on the top of the upper guide rail 20, and guide sleeves 23 are fixedly installed at the four end corners of the lower base plate 21 in the vertical direction. An upper base plate 22 is provided on the top of the lower base plate 21, and the upper base plate 22 is located directly above the lower base plate 21. The guide sleeve 23 movably passes through the upper base plate 22, and an adjusting coil spring 24 is movably sleeved on the guide sleeve 23. The two ends of the adjusting coil spring 24 are respectively fixedly connected to the lower base plate 21 and the upper base plate 22. The adjusting coil spring 2424 is used to adjust the load from the working load, and the upper base plate 22 can be self-adjusted in all directions according to the load application point; at the same time, the top end of the guide sleeve 23 is threadedly connected to a limiting bolt 25 to prevent the upper base plate 22 from being seriously tilted after the asymmetric compression of the adjusting coil spring 24. The upper bottom plate 22 is provided with a bearing seat 29 for rotation at the top. The upper bottom plate 22 is provided with an end bearing 27. The end bearing 27 is fixed to the upper bottom plate 22 through a positioning shaft 26 and bears the load borne by the workbench. The positioning shaft 2626 is used to position the upper bottom plate 22 and the end bearing 2727. The outer ring of the end bearing 27 is installed on the bearing seat 29, and the inner ring is fixedly sleeved on the positioning shaft 26. The bearing seat 29 can rotate along the positioning shaft 26. A rolling frame 30 is fixedly installed on the top of the bearing seat 29. A fastening bolt 28 is threadedly connected between the rolling frame 30 and the bearing seat 29. A plurality of rolling wheels are provided on the rolling frame 30. The two ends of the rolling wheels are rotatably carried on the inner walls of the two opposite sides of the rolling frame 30. The plurality of rolling wheels are used to support the radiation tube. The opposite sides of the rolling frame 30 are provided with guardrails 31. When replacing the radiation tube, the guardrails 31 can prevent the radiation tube from accidentally slipping off the rolling frame 30.

[0036] The implementation principle of a device for replacing a heat radiation tube for a steel rolling heating furnace in an embodiment of the present application is as follows: a person drills into the inspection hole of the heating furnace, moves on the roller conveyor at the bottom of the furnace, aligns the rolling frame 30 with the bottom of the radiation tube, and turns the crank 14 to utilize the rotation of the lead screw 16 and the upper follower shaft 19 to drive the scissor frame 11 to extend and retract, thereby driving the rolling frame 30 to rise and fall. When the rolling frame 30 moves to a height not far below the radiation tube, the lifting and falling stops. The radiation tube leaves the hanging piece of the heating furnace and is placed on the rolling frame 30 with the rolling frame 30, which greatly reduces the friction of pulling out the radiation tube, reduces the wear and tear of the hanging piece, and also saves the safety hazards caused by manual shoulder-carrying and back-carrying sticks. After the burner of the radiation tube installed on the outside of the heating furnace is removed, the radiation tube is pulled out by a wire rope in cooperation with the overhead crane. When installing a new radiation tube, the principle is the same as above, and the process is reversed. The utility model has strong practicality and can realize load, motion and precise adaptive adjustment functions.

[0037] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for replacing heat radiation tubes of a steel rolling heating furnace, characterized in that: It comprises a lower guide rail and an upper guide rail, a plurality of groove wheels are arranged on opposite sides of the outer side surface of the lower guide rail, at least two X-shaped scissor frames are arranged between the upper guide rail and the lower guide rail, the scissor frames are telescopically arranged to drive the upper guide rail to rise and fall, a driving member for driving the scissor frames to telescope is arranged on the upper guide rail, a bearing seat is rotatably arranged on the top of the upper guide rail, a rolling frame is arranged on the top of the bearing seat, a plurality of rolling wheels are arranged on the rolling frame, and the plurality of rolling wheels are used to support the radiation tube.

2. The device for replacing heat radiation tubes of a steel rolling heating furnace according to claim 1, characterized in that: The scissors frame includes a first connecting rod and a second connecting rod, a rotating shaft is connected between the first connecting rod and the second connecting rod, two ends of the first connecting rod are respectively provided with a lower fixed shaft and an upper follower shaft, the end of the lower fixed shaft is rotatably connected to the side wall of the lower guide rail, the upper follower shaft is provided with an upper roller, and the upper roller is rollingly connected to the upper guide rail, and two ends of the second connecting rod are respectively provided with an upper fixed shaft and a lower follower shaft, the end of the upper fixed shaft is rotatably connected to the side wall of the upper guide rail, the lower follower shaft is provided with a lower roller, and the lower roller is rollingly connected to the lower guide rail.

3. The device for replacing heat radiation tubes of a steel rolling heating furnace according to claim 2, characterized in that: The upper fixed shaft is provided with a mounting block, the upper follower shaft is provided with a driving block, and the driving member comprises a screw rod rotatably provided on the mounting block, and the screw rod is threadedly connected to the driving block.

4. The device for replacing heat radiation tubes of a steel rolling heating furnace according to claim 3, characterized in that: A crank is arranged at the end of the screw rod.

5. The device for replacing heat radiation tubes of a steel rolling heating furnace according to claim 1, characterized in that: A lower base plate is arranged on the top of the upper guide rail, and guide sleeves are fixedly arranged at the four end corners of the lower base plate. An upper base plate is arranged on the top of the lower base plate, and the guide sleeve movably passes through the upper base plate. An adjusting coil spring is movably sleeved on the guide sleeve, and two ends of the adjusting coil spring are respectively fixedly connected to the lower base plate and the upper base plate, and the bearing seat is rotatably arranged on the top of the upper base plate.

6. The device for replacing heat radiation tubes of a steel rolling heating furnace according to claim 5, characterized in that: The top end of the guide sleeve is threadedly connected to a limiting bolt.

7. The device for replacing heat radiation tubes of a steel rolling heating furnace according to claim 1, characterized in that: Guardrails are arranged on opposite sides of the rolling frame.

8. The device for replacing heat radiation tubes of a steel rolling heating furnace according to claim 1, characterized in that: A fastening bolt is threadedly connected between the rolling frame and the bearing seat.

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