Supporting roller bushing hot charging positioning and guiding device for pit-type heating furnace and using method of supporting roller bushing hot charging positioning and guiding device

Abstract

The invention provides a supporting roller bushing hot charging positioning and guiding device for a pit type heating furnace and a using method, and belongs to the technical field of large metallurgical rollers. A roller sleeve vertical positioning taper sleeve, a roller shaft vertical positioning taper sleeve and a heating furnace door opening and closing cover are arranged on the rotating disc. The roller sleeve vertical positioning taper sleeve or the roller shaft vertical positioning taper sleeve is aligned with a furnace opening of the pit type heating furnace by changing the position of the rotating disc, and the axis perpendicularity in the vertical lifting process of the roller sleeve and the roller shaft and opening and closing of a heating furnace door opening and closing cover are guaranteed. By changing the position of the rotating disc, the roller sleeve vertical positioning taper sleeve or the roller shaft vertical positioning taper sleeve on the rotating disc is aligned with the furnace mouth of the pit type heating furnace, the roller sleeve or the roller shaft enters from the roller sleeve vertical positioning taper sleeve or the roller shaft vertical positioning taper sleeve, and the perpendicularity of the roller sleeve and the roller shaft entering the heating furnace is guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of large-scale metallurgical rollers, and in particular to a support roller sleeve hot-installation positioning guide device for a pit-type heating furnace and a use method thereof. Background Art

[0002] The diameter and length of the large sleeved support roller are relatively large. During the sleeve hot installation process, the roller sleeve is first heated to a certain temperature in a heating furnace, and then the roller shaft is vertically inserted into the inner hole of the roller sleeve to achieve hot installation. However, due to the large volume and weight of the large roller sleeve, it is difficult to ensure the verticality and stability of the roller axis during the lifting and assembly process. If the verticality of the roller shaft cannot be guaranteed, the roller sleeve and the roller shaft will be locked prematurely before the roller shaft is fully inserted into the roller sleeve, which will cause great economic losses. Summary of the Invention

[0003] In view of this, in order to solve the technical problem in the prior art that it is difficult to ensure the verticality of the roller axis during the lifting and assembly of large roller sleeves, on the one hand, the present invention provides a support roller sleeve hot-installation positioning guide device for a pit-type heating furnace. By changing the position of the rotating disk, the roller sleeve vertical positioning cone sleeve or the roller shaft vertical positioning cone sleeve on it is aligned with the furnace mouth of the pit-type heating furnace, and the roller sleeve or roller shaft enters from the roller sleeve vertical positioning cone sleeve or the roller shaft vertical positioning cone sleeve to ensure the verticality of the roller sleeve and the roller shaft when entering the heating furnace.

[0004] To achieve the above object, the present invention provides the following technical solutions: A support roller sleeve hot-fitting positioning and guiding device for a pit-type heating furnace, comprising: A rotating disk is provided with a roller sleeve vertical positioning cone sleeve, a roller shaft vertical positioning cone sleeve and a heating furnace door opening and closing cover; By changing the position of the rotating disk, the roller sleeve vertical positioning cone sleeve or the roller shaft vertical positioning cone sleeve is aligned with the furnace mouth of the pit-type heating furnace, thereby ensuring the verticality of the axis during the vertical lifting process of the roller sleeve and the roller shaft, as well as the opening and closing of the heating furnace door opening and closing cover.

[0005] Preferably, it also includes: Slideways are located on both sides of the pit-type heating furnace mouth; a support column, slidably connected to the slideway; The rotating disk is rotatably connected to the supporting column, so as to enable the rotating disk to rotate around the supporting column.

[0006] Preferably, the rotating disk and the supporting column are rotatably connected via a thrust cylindrical roller bearing.

[0007] Preferably, the roller sleeve vertical positioning cone sleeve and the roller shaft vertical positioning cone sleeve adopt an upper and lower two-section cone sleeve design, and the taper and cone surface length of the upper cone sleeve are greater than the taper and cone surface of the lower cone sleeve.

[0008] Preferably, a high-temperature resistant internal circulation fan is provided on the rotating disk, and the air suction port and air blowing port of the high-temperature resistant internal circulation fan are respectively aligned with the inner hole of the roller sleeve and the outer area of ​​the outer surface of the roller sleeve, so as to uniformly heat the inner and outer surfaces of the roller sleeve.

[0009] Preferably, a lower guide cone sleeve and an upper guide column sleeve are provided near the furnace mouth of the pit-type heating furnace, and the upper guide column sleeve is provided on the lower guide cone sleeve.

[0010] Preferably, the rotating disk drives a coupling via a reduction motor, which in turn drives a bevel gear meshing with the rotating disk to rotate, thereby driving the rotating disk to rotate.

[0011] Preferably, the support column is mounted on the slideway by means of bolts and washers, with a fixed pressure plate placed in the middle.

[0012] Preferably, the rotating disk comprises: The left guide positioning cone sleeve and the heating furnace door opening and closing integrated rotating disk have a semicircular structure on the left roller sleeve vertical positioning cone sleeve and the left roller shaft vertical positioning cone sleeve; The right side guide positioning cone sleeve and the heating furnace door opening and closing integrated rotating disk have a semicircular structure on the right side roller sleeve vertical positioning cone sleeve and the right side roller shaft vertical positioning cone sleeve; The roller sleeve vertical positioning cone sleeve is formed after the left roller sleeve vertical positioning cone sleeve and the right roller shaft vertical positioning cone sleeve are rotated and aligned; The roller shaft vertical positioning taper sleeve is formed after the left roller shaft vertical positioning taper sleeve and the right roller shaft vertical positioning taper sleeve are rotated and aligned.

[0013] On the other hand, the present invention also provides a method for using the above-mentioned support roller sleeve shrink-fitting positioning guide device for a pit-type heating furnace, comprising the following steps: When a large roller sleeve needs to be placed in a pit-type heating furnace for heating and hot loading, first rotate the rotary disk to align the roller sleeve vertical positioning cone sleeve with the pit-type heating furnace mouth, and the roller sleeve enters from the roller sleeve vertical positioning cone sleeve; When the roller sleeve is placed in the pit-type heating furnace and fixed in position, the rotating disk rotates, the heating furnace door opening and closing cover on it seals the furnace opening, and heating begins; When the roller sleeve is heated, the rotary disk rotates to align the roller vertical positioning cone sleeve with the pit-type heating furnace mouth, and the roller enters from the roller vertical positioning cone sleeve and is hot-fitted with the heated roller sleeve, thus completing the hot-fitting process.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention provides a hot-installation positioning guide device for support roller sleeves for pit-type heating furnaces, which has a high degree of positioning accuracy. By adjusting the position of the rotating disk, it is possible to ensure that the vertical positioning cone sleeve of the roller sleeve or the vertical positioning cone sleeve of the roller shaft is accurately aligned with the furnace mouth of the pit-type heating furnace. This design can effectively ensure the verticality of the roller sleeve and the roller shaft when entering the heating furnace, avoid installation problems caused by position deviation, and improve installation efficiency. The device simplifies the hot-installation process of the support roller sleeve. The operator only needs to adjust the position of the rotating disk to complete the positioning, without the need for complex manual adjustments or multiple attempts, thereby greatly shortening the installation time. Through precise guidance and positioning, the deflection or jamming of the roller sleeve and the roller shaft during the installation process is avoided, equipment failures and safety hazards caused by improper installation are reduced, and the safety and stability of the equipment are enhanced.

[0015] (2) The roller sleeve vertical positioning taper sleeve and the roller shaft vertical positioning taper sleeve of the present invention adopt an upper and lower two-section taper sleeve structure. Specifically, the taper of the upper taper sleeve and the length of the taper surface are designed to be larger than those of the lower taper sleeve. This design enables the roller sleeve vertical positioning taper sleeve and the roller shaft vertical positioning taper sleeve to be placed on two independent rotating disks. By adjusting the positions of the two rotating disks, not only can the verticality of the axis be achieved during the vertical lifting of the roller sleeve, but also during the hot installation process of the roller shaft being vertically inserted into the roller sleeve, the position of the roller shaft can be ensured to remain perpendicular to the axis. It can significantly improve the efficiency of lifting and hot installation, and can ensure the smooth progress of the hot installation process, thereby improving the overall production efficiency and product quality.

[0016] (3) The present invention realizes a multifunctional integrated design of the rotating disk by designing the roller sleeve guide cone sleeve, the roller shaft guide cone sleeve and the heating furnace door opening and closing cover at different positions of the rotating disk, thereby improving the integration degree and space utilization of the equipment. A reduction motor is connected to the bevel gear through a coupling, and the bevel gear drives the rotating disk with an internal helical gear to rotate. This transmission method has a compact structure and high transmission efficiency. It can stably and reliably realize the rotation movement of the rotating disk, thereby ensuring the accurate realization of the guiding function and the opening and closing insulation function of the heating furnace door. The present invention can realize multiple functions such as guiding and heating of the roller sleeve and opening and closing insulation of the heating furnace door through the rotation of the rotating disk. It is easy to operate, reduces the difficulty of operation and labor intensity, and improves work efficiency.

[0017] (4) Uniform heating of the inner and outer surfaces of the roller sleeve is achieved by opening and closing the high-temperature internal circulation forced convection fan installed above the furnace cover. The air intake of the convection fan is aimed at the inner hole of the roller sleeve, and the air outlet is aimed at the outer area of ​​the outer surface of the roller sleeve. This layout ensures uniform heat distribution, effectively reduces thermal stress and thermal strain during the heating process, and improves heating efficiency and product quality.

[0018] (5) The rotating disk is tightly connected to the support column by passing through the inner hole of the support column. A cylindrical thrust bearing is used as a connecting piece between the two to ensure the smooth rotation of the rotating disk. The bottom of the support column is placed on a slide with a V-shaped cross section, so that the rotating disk can not only rotate 360 ​​degrees, but also achieve linear motion on both sides. This unique combination of movement allows the position of the rotating disk to be precisely adjusted, thereby meeting the special needs of opening and closing the heating furnace cover and ensuring the flexibility and efficiency of the heating furnace operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a specific structural diagram of the present invention; Figure 2 This is a schematic diagram of the rotating disk after rotation and centering; Figure 3 It is the CC section view; Figure 4 It is the local view of location II; Figure 5 It is the AA section view; Figure 6 It is a partial view of point B; Figure 7 It is the DD section view; Figure 8 It is a partial view at location I; In the figure, 1. slide; 2. bell mouth; 3. roller sleeve; 4. pit-type heating furnace; 5. high-temperature resistant internal circulation fan; 6. left-side guide and positioning cone sleeve and heating furnace door opening and closing integrated rotating disk; 7. bevel gear; 8. cylindrical hole self-aligning ball bearing; 9. bearing bracket; 10. coupling; 11. reduction motor; 12. fixed pressure plate; 13. hexagonal head bolt; 14. spring washer; 15. lower guide cone sleeve; 16. upper guide column sleeve; 17. air suction port; 18. supporting column; 19. thrust cylindrical roller bearing; 20. right-side guide and positioning cone sleeve and heating furnace door opening and closing integrated rotating disk; 21. air blowing port. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work shall fall within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the present invention.

[0022] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean 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 an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0023] like Figure 1-2 As shown, the present invention provides a support roller sleeve heat-inserting positioning guide device for a pit-type heating furnace 4, comprising: The rotating disk is equipped with a vertical positioning cone sleeve for the roller sleeve 3, a vertical positioning cone sleeve for the roller shaft, and a heating furnace door opening and closing cover. By changing the position of the rotating disk, the vertical positioning cone sleeve for the roller sleeve 3 or the roller shaft can be aligned with the furnace opening of the pit-type heating furnace 4, ensuring the verticality of the axis of the roller sleeve 3 and the roller shaft during the vertical lifting process, and the opening and closing of the heating furnace door opening and closing cover.

[0024] In the present invention, by adopting two sets of rotating disk designs, namely, the left-side guiding and positioning cone sleeve and the heating furnace door opening and closing integrated rotating disk 6 respectively arranged on the left side of the furnace mouth of the pit-type heating furnace 4, and the right-side guiding and positioning cone sleeve and the heating furnace door opening and closing integrated rotating disk 20 arranged on the right side of the furnace mouth, the stable opening and closing and precise positioning of the furnace door are achieved. Each set of rotating disks is equipped with a semicircular roller sleeve 3 vertical positioning cone sleeve and a roller shaft vertical positioning cone sleeve. When the rotating disk rotates, the semicircular roller sleeve 3 vertical positioning cone sleeve on the left side and the roller sleeve 3 vertical positioning cone sleeve on the right side are aligned to form a channel for the roller sleeve 3 to pass through. Similarly, the left roller shaft vertical positioning cone sleeve and the right roller shaft vertical positioning cone sleeve are aligned to form the left side of the channel for the roller sleeve 3 to pass through. This design not only enhances the stability and load-bearing capacity of the rotating disk, but also ensures the precise guidance and positioning of the furnace door during the opening and closing process, effectively avoids the problem of furnace door deviation or shaking, and improves the overall safety and operating efficiency of the heating furnace.

[0025] like Figure 3-6 As shown, in the present invention, it also includes: Slide 1, located on both sides of the furnace mouth of the pit type heating furnace 4; A support column, slidably connected to the slideway 1; The rotating disk is rotatably connected to the support column, so as to enable the rotating disk to rotate around the support column. First, the support column 18 is installed on the slide 1 via bolts (preferably hexagonal bolts 13) and washers (preferably spring washers 14), with a fixed pressure plate 12 placed in the middle. The hexagonal bolts 13 are connected to the slide 1 via threads. In the working state, after the bolts are tightened, the fixed pressure plate 12 presses the support column 18 to fix the position of the support column 18. When the position of the support column 18 needs to be adjusted, first loosen the bolts 13. The support column 18 can move linearly in its groove. After moving to the target position, tighten the bolts. During the adjustment process, only the support column 18 can move linearly along its upper slide groove. The hexagonal bolts 13, the slide 1, the fixed pressure plate 12, and the spring washer 14 remain fixed.

[0026] Secondly, the left-side guide and positioning cone sleeve and the heating furnace door opening and closing integrated rotating disk 6 and the right-side guide and positioning cone sleeve and the heating furnace door opening and closing integrated rotating disk 20 are connected to the support column 18 through a thrust cylindrical roller bearing 19, so that the two rotating disks can rotate on the support column.

[0027] The advantages of this design are mainly reflected in the following aspects: First of all, the connection between the support column 18 and the slide 1 is stable and reliable. The use of the hexagonal bolt 13 and the spring washer 14 not only ensures the convenience of installation, but also greatly enhances the tightness and stability of the connection, providing a solid foundation for the stable operation of the entire structure.

[0028] Secondly, the design cleverly utilizes thrust cylindrical roller bearings 19 to connect the support columns 18 with the left and right guide and positioning cones and the rotating disc that opens and closes the heating furnace door. This connection not only allows the rotating disc to rotate flexibly on the support columns 18, but also significantly reduces friction and resistance during rotation, improving the operating efficiency and stability of the entire structure. Furthermore, the thrust cylindrical roller bearings 19 have a strong load-bearing capacity and can adapt to various complex operating conditions, further enhancing the reliability and durability of the entire structure.

[0029] In this invention, the vertical positioning taper sleeves for the roller sleeve 3 and the roller shaft utilize a two-stage design, with the upper sleeve's taper and surface length both greater than those of the lower sleeve. This design not only enhances the tight fit between the sleeves, the roller sleeve 3, and the roller shaft, but also improves positioning accuracy and stability. By optimizing the taper and surface length, this invention effectively reduces assembly errors and enhances overall equipment efficiency and performance.

[0030] like Figure 7As shown, in the present invention, a high-temperature-resistant internal circulation fan 5 is provided on the rotating disk, achieving uniform heating of the inner and outer surfaces of the roller sleeve 3. This design effectively improves heating efficiency and ensures temperature uniformity of the roller sleeve 3, thereby enhancing overall operating performance and product quality. The air intake 17 and air outlet 21 of the high-temperature-resistant internal circulation fan 5 (wherein the air intake 17 and air outlet 21 are preferably bell-shaped) are respectively aligned with the inner hole of the roller sleeve 3 and the outer area of ​​the outer surface of the roller sleeve 3, thereby achieving uniform heating of the inner and outer surfaces of the roller sleeve 3. This design effectively improves heating efficiency and ensures temperature uniformity of the roller sleeve 3, thereby enhancing overall operating performance and product quality. The air intake 17 and air outlet 21 of the high-temperature-resistant internal circulation fan 5 are respectively aligned with the inner hole of the roller sleeve 3 and the outer area of ​​the outer surface of the roller sleeve 3. This layout allows heat to be transferred to the roller sleeve 3 more directly and efficiently, reducing heat loss and waste. The air suction port 17 and the air blowing port 21 are preferably designed as a bell mouth 2. This design not only enhances the air suction and blowing effects of the fan, but also improves the heat transfer efficiency, further improving the uniformity and efficiency of heating.

[0031] In summary, the advantages of the present invention are that it achieves uniform heating of the roller sleeve 3, improves heating efficiency and product quality, and reduces heat loss and waste.

[0032] like Figure 1 As shown, in the present invention, a lower guide cone sleeve 15 and an upper guide column sleeve 16 are installed near the furnace mouth of the pit-type heating furnace 4. The upper guide column sleeve 16 is mounted on the lower guide cone sleeve 15. This ensures the stability and accuracy of the heating furnace during operation, effectively improving its operating efficiency and safety. This design also facilitates installation and maintenance, reducing operational difficulty and costs.

[0033] like Figure 1 、 3As shown in Figure 8, in the present invention, the rotating disk drives the coupling 10 through the reduction motor 11, and then drives the bevel gear 7 meshing with the rotating disk to rotate, thereby driving the rotating disk to rotate. When the rotating disk needs to rotate, the reduction motor 11 drives the coupling 10, thereby driving the bevel gear 7 to rotate. Since the bevel gear 7 is meshed with the inner helical gear of the rotating disk, the rotating disk is finally rotated. This design ensures the stable and precise rotation of the rotating disk. When the rotating disk needs to rotate, the reduction motor 11 can efficiently transmit power to the coupling 10, and then realize the rotation of the rotating disk through the meshing of the bevel gear 7 with the inner helical gear of the rotating disk. The power transmission in the whole process is smooth, the rotation is stable, and it is easy to adjust the rotation speed and direction by controlling the reduction motor 11, thereby improving the operational flexibility and work efficiency of the equipment. In addition, the meshing design of the bevel gear 7 and the inner helical gear also enhances the load-bearing capacity and service life of the rotating disk. One end of the coupling 10 is connected to the output end of the reduction motor 11 , and the other end is connected to the bevel gear 7 , and is rotatably connected via a cylindrical hole self-aligning ball bearing 8 located on a bearing bracket 9 .

[0034] On the other hand, the present invention also provides a method for using the support roller sleeve shrink-fitting positioning guide device for the pit-type heating furnace 4, which may specifically include the following steps: When a large roller sleeve 3 needs to be placed in the pit-type heating furnace 4 for heating or hot-loading, the rotating discs (the left-side guide positioning cone sleeve and heating furnace door opening and closing integrated rotating disc 6 and the right-side guide positioning cone sleeve and heating furnace door opening and closing integrated rotating disc 20) are rotated first, so that the semicircular roller sleeve 3 on the two rotating discs is vertically positioned and centered with the cone sleeve, thereby forming a circular opening with a larger diameter, and the roller sleeve 3 enters from the opening, thereby ensuring accuracy; When the roller sleeve 3 is placed in the pit-type heating furnace 4 and fixed in position, the two rotating disks rotate simultaneously to seal the furnace mouth and start heating; When the roller sleeve 3 is heated, the two rotating disks rotate again, so that the two small semicircular roller shafts are vertically positioned with the cone sleeves for centering, thereby forming a circular opening with a smaller diameter. The roller shaft enters from the opening and is then heat-fitted with the heated roller sleeve 3 while ensuring accuracy, thus completing the heat-fitting process.

[0035] The advantages of the guide device and the method of use provided by the present invention are mainly reflected in the following aspects: Efficient and accurate centering: The semicircular roller sleeve 3 on the rotating disk is used to vertically position the tapered sleeve for centering, which can quickly and accurately form a circular opening with a larger diameter, facilitating the entry of the large roller sleeve 3 and effectively ensuring the installation accuracy.

[0036] Flexible Sealed Heating: After the roller sleeve 3 is placed and fixed in position, the two rotating discs can rotate simultaneously to seal the furnace mouth and start the heating process. This design not only improves heating efficiency but also ensures safety during the heating process.

[0037] Convenient heat transfer operation: After heating, the rotary disc rotates again to form a circular opening with a smaller diameter, which is convenient for the roller to enter. This design makes the heat transfer process more convenient and also ensures the accuracy and efficiency of heat transfer.

[0038] In summary, the system achieves efficient and precise centering of the large roller sleeve 3, flexible sealing and heating, and convenient hot-loading operation through the design of the rotating disk, which significantly improves production efficiency and product quality.

[0039] The above description is merely a preferred embodiment of the present invention. However, the scope of protection of the present invention is not limited thereto; any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A support roller sleeve shrink-fitting positioning guide device for a pit-type heating furnace, characterized in that: include: A rotating disk is provided with a roller sleeve vertical positioning cone sleeve, a roller shaft vertical positioning cone sleeve and a heating furnace door opening and closing cover; By changing the position of the rotating disk, the roller sleeve vertical positioning cone sleeve or the roller shaft vertical positioning cone sleeve is aligned with the furnace mouth of the pit-type heating furnace, thereby ensuring the verticality of the axis during the vertical lifting process of the roller sleeve and the roller shaft, as well as the opening and closing of the heating furnace door opening and closing cover.

2. The support roller sleeve shrink-fitting positioning guide device for a pit-type heating furnace according to claim 1 is characterized in that: Also includes: Slideways are located on both sides of the pit-type heating furnace mouth; a support column, slidably connected to the slideway; The rotating disk is rotatably connected to the supporting column, so as to enable the rotating disk to rotate around the supporting column.

3. The support roller sleeve shrink-fitting positioning guide device for a pit-type heating furnace according to claim 2, characterized in that: The rotating disk and the supporting column are rotatably connected via a thrust cylindrical roller bearing.

4. The support roller sleeve shrink-fitting positioning guide device for a pit-type heating furnace according to claim 1, characterized in that: The roller sleeve vertical positioning taper sleeve and the roller shaft vertical positioning taper sleeve adopt an upper and lower two-section taper sleeve design, and the taper and taper surface length of the upper taper sleeve are greater than the taper and taper surface of the lower taper sleeve.

5. The support roller sleeve shrink-fitting positioning guide device for a pit-type heating furnace according to claim 1, characterized in that: A high-temperature resistant internal circulation fan is provided on the rotating disk, and the air suction port and the air blowing port of the high-temperature resistant internal circulation fan are respectively aligned with the inner hole of the roller sleeve and the outer area of ​​the outer surface of the roller sleeve, so as to uniformly heat the inner and outer surfaces of the roller sleeve.

6. The support roller sleeve shrink-fitting positioning guide device for a pit-type heating furnace according to claim 1, characterized in that: A lower guide cone sleeve and an upper guide column sleeve are arranged near the furnace mouth of the pit-type heating furnace, and the upper guide column sleeve is arranged on the lower guide cone sleeve.

7. The support roller sleeve shrink-fitting positioning guide device for a pit-type heating furnace according to claim 1, characterized in that: The rotating disk drives the coupling through the reduction motor, and then drives the bevel gear meshing with the rotating disk to rotate, thereby driving the rotating disk to rotate.

8. The support roller sleeve shrink-fitting positioning guide device for a pit-type heating furnace according to claim 1, characterized in that: The support column is mounted on the slideway through bolts and washers, with a fixed pressure plate placed in the middle.

9. A support roller sleeve shrink-fitting positioning guide device for a pit-type heating furnace according to any one of claims 1 to 8, characterized in that: The rotating disk comprises: The left guide positioning cone sleeve and the heating furnace door opening and closing integrated rotating disk have a semicircular structure on the left roller sleeve vertical positioning cone sleeve and the left roller shaft vertical positioning cone sleeve; The right side guide positioning cone sleeve and the heating furnace door opening and closing integrated rotating disk have a semicircular structure on the right side roller sleeve vertical positioning cone sleeve and the right side roller shaft vertical positioning cone sleeve; The roller sleeve vertical positioning taper sleeve is formed after the left roller sleeve vertical positioning taper sleeve and the right roller shaft vertical positioning taper sleeve are rotated and aligned; The roller shaft vertical positioning taper sleeve is formed after the left roller shaft vertical positioning taper sleeve and the right roller shaft vertical positioning taper sleeve are rotated and aligned.

10. A method for using a support roller sleeve shrink-fitting positioning guide device for a pit-type heating furnace according to any one of claims 1 to 9, characterized in that: The steps include: When a large roller sleeve needs to be placed in a pit-type heating furnace for heating and hot loading, first rotate the rotary disk to align the roller sleeve vertical positioning cone sleeve with the pit-type heating furnace mouth, and the roller sleeve enters from the roller sleeve vertical positioning cone sleeve; When the roller sleeve is placed in the pit-type heating furnace and fixed in position, the rotating disk rotates, the heating furnace door opening and closing cover on it seals the furnace opening, and heating begins; When the roller sleeve is heated, the rotary disk rotates to align the roller vertical positioning cone sleeve with the pit-type heating furnace mouth, and the roller enters from the roller vertical positioning cone sleeve and is hot-fitted with the heated roller sleeve, thus completing the hot-fitting process.

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