Rolling type import and export dual-purpose guide

Abstract

The application relates to the technical field of rail rolling, in particular to a rolling type import and export dual-purpose guide, which comprises a lower guide seat, an upper guide seat, two lower rollers and two upper rollers; a lower inlet guide structure and an upper inlet guide structure are matched, a lower transition guide structure and an upper transition guide structure are matched, and a lower outlet guide structure and an upper outlet guide structure are matched, which not only play a guiding role, but also prevent the high-temperature rail from being twisted. In the process that the high-temperature rail rapidly passes through the lower guide groove and the upper guide groove, the two lower rollers and the two upper rollers are matched, which not only play a guiding role, but also prevent the high-temperature rail from being twisted, and sliding friction between the guide and the high-temperature rail is completely avoided, so that the degree of surface scratch of the high-temperature rail is effectively reduced, and the quality of the finished product is guaranteed.

Description

Technical Field

[0001] This application relates to the field of rail rolling technology, and in particular to a rolling inlet / outlet dual-purpose guide. Background Technology

[0002] In the rail rolling process, inlet / outlet guides are key process equipment installed on the inlet / outlet sides of the rolling mill. As the rail enters the mill for rolling / completes rolling and exits from the roll pass, the inlet / outlet guides guide, clamp, and straighten the workpiece, preventing it from shifting, twisting, or warping. This ensures the stability of the rolling process and the dimensional accuracy of the product, while also reducing hard friction between the guides and the rail, significantly lowering the risk of scratches on the finished product.

[0003] Currently, sliding inlet / outlet guides are widely used on rail rolling lines. These are typically made of wear-resistant alloy materials and have guide grooves that match the profile of the rail cross-section. High-temperature rails pass through the guide grooves of the sliding outlet guides at high speeds of several meters per second.

[0004] The existing technical solutions described above have the following drawbacks: When the high-temperature steel rail rapidly passes through the guide groove of the sliding inlet guide / sliding outlet guide, intense sliding friction occurs between the rail and the guide groove, resulting in severe scratches on the rail. Simultaneously, the rail undergoes a certain degree of torsion, further exacerbating the scratches. Summary of the Invention

[0005] To avoid sliding friction and torsion, and to reduce the degree of scratches on the rail surface, this application provides a rolling inlet / outlet dual-purpose guide.

[0006] This application provides a rolling dual-purpose inlet and outlet guide, which adopts the following technical solution: A rolling inlet / outlet dual-purpose guide, comprising: The lower guide seat has a lower guide groove inside, a lower inlet guide structure at one end, a lower outlet guide structure at the other end, and a lower transition guide structure in the middle of the interior. The upper guide seat is located above the lower guide seat. It has an upper guide groove inside, an upper inlet guide structure at one end, an upper outlet guide structure at the other end, and an upper transition guide structure in the middle of the interior. There are two lower rollers; one lower roller is rotatably mounted in the lower guide seat, located between the lower inlet guide structure and the lower transition guide structure; the other lower roller is rotatably mounted in the lower guide seat, located between the lower transition guide structure and the lower outlet guide structure. There are two upper rollers; one upper roller is rotatably mounted inside the upper guide seat, located between the upper inlet guide structure and the upper transition guide structure; the other upper roller is rotatably mounted inside the upper guide seat, located between the upper transition guide structure and the upper outlet guide structure.

[0007] By adopting the above technical solution, before the rail enters the lower and upper guide slots, the lower and upper inlet guide structures work together to both guide the rail and prevent the high-temperature rail from twisting. After the rail enters the lower and upper guide slots, the lower and upper transition guide structures work together to both guide the rail and prevent the high-temperature rail from twisting. When the rail moves out of the lower and upper guide slots, the lower and upper outlet guide structures work together to both guide the rail and prevent the high-temperature rail from twisting. During the rapid passage of the high-temperature rail through the lower and upper guide slots, the two lower rollers and two upper rollers work together to both guide the rail and prevent it from twisting, and completely avoid sliding friction between the guide and the high-temperature rail, thereby effectively reducing the degree of scratches on the surface of the high-temperature rail and ensuring the quality of the finished product.

[0008] This application further specifies that: the lower inlet guide structure is provided with a first side sliding support, a first middle sliding support, and a second side sliding support in sequence from one side to the other; the top surface of the first side sliding support is higher than the top surface of the second side sliding support in the vertical direction; the top surface of the first middle sliding support is higher than the top surface of the first side sliding support in the vertical direction; the upper inlet guide structure is provided with a first side sliding limit part, a first middle sliding limit part, and a second side sliding limit part in sequence from one side to the other; the bottom surface of the first side sliding limit part is lower than the bottom surface of the second side sliding limit part in the vertical direction; the bottom surface of the first middle sliding limit part is lower than the bottom surface of the first side sliding limit part in the vertical direction; The lower outlet guide structure is provided with a third sliding support, a second middle sliding support, and a fourth sliding support in sequence from one side to the other; the top surface of the third sliding support is higher than the top surface of the fourth sliding support in the vertical direction; the top surface of the second middle sliding support is higher than the top surface of the third sliding support in the vertical direction. The upper outlet guide structure is provided with a third sliding limit part, a second middle sliding limit part, and a fourth sliding limit part in sequence from one side to the other; the bottom surface of the third sliding limit part is lower than the bottom surface of the fourth sliding limit part in the vertical direction; the bottom surface of the second middle sliding limit part is lower than the bottom surface of the third sliding limit part in the vertical direction. The lower transition guide structure is provided with a fifth sliding support, a third middle sliding support, and a sixth sliding support in sequence from one side to the other; the top surface of the fifth sliding support is higher than the top surface of the sixth sliding support in the vertical direction; the top surface of the third middle sliding support is higher than the top surface of the fifth sliding support in the vertical direction; the upper transition guide structure is provided with a fifth sliding limit part, a third middle sliding limit part, and a sixth sliding limit part in sequence from one side to the other; the bottom surface of the fifth sliding limit part is lower than the bottom surface of the sixth sliding limit part in the vertical direction; the bottom surface of the third middle sliding limit part is lower than the bottom surface of the fifth sliding limit part in the vertical direction.

[0009] By adopting the above technical solution, before the rail enters the lower and upper guide grooves, the first side sliding support, the first middle sliding support, the second side sliding support, the first side sliding limiter, the first middle sliding limiter, and the second side sliding limiter cooperate to both guide the rail and prevent the high-temperature rail from twisting. When the rail moves out of the lower and upper guide grooves, the third side sliding support, the second middle sliding support, the fourth side sliding support, the third side sliding limiter, the second middle sliding limiter, and the fourth side sliding limiter cooperate to both guide the rail and prevent the high-temperature rail from twisting. After the rail enters the lower and upper guide grooves, the fifth side sliding support, the third middle sliding support, the sixth side sliding support, the fifth side sliding limiter, the third middle sliding limiter, and the sixth side sliding limiter cooperate to both guide the rail and prevent the high-temperature rail from twisting.

[0010] This application further specifies that: each lower roller is provided with a first end rolling support, a first middle rolling support, and a second end rolling support in sequence from one end to the other; the top of the first end rolling support is higher than the top of the second end rolling support in the vertical direction; the top of the first middle rolling support is higher than the top of the first end rolling support in the vertical direction; the top of the first end rolling support is higher than the top surfaces of the first side sliding support, the third side sliding support, and the fifth side sliding support in the vertical direction; the top of the first middle rolling support is higher than the top surfaces of the first middle sliding support, the second middle sliding support, and the third middle sliding support in the vertical direction; the top of the second end rolling support is higher than the top surfaces of the second side sliding support, the fourth side sliding support, and the sixth side sliding support in the vertical direction. Each upper roller is provided with a first end rolling limit part, a first middle rolling limit part, and a second end rolling limit part in sequence from one end to the other. The bottom of the first end rolling limit part is lower than the bottom of the second end rolling limit part in the vertical direction. The bottom of the first middle rolling limit part is lower than the bottom of the first end rolling limit part in the vertical direction. The bottom of the first end rolling limit part is lower than the bottom surface of the first side sliding limit part, the third side sliding limit part, and the fifth side sliding limit part in the vertical direction. The bottom of the first middle rolling limit part is lower than the bottom surface of the first middle sliding limit part, the second middle sliding limit part, and the third middle sliding limit part in the vertical direction. The bottom of the second end rolling limit part is lower than the bottom surface of the second side sliding limit part, the fourth side sliding limit part, and the sixth side sliding limit part in the vertical direction.

[0011] By adopting the above technical solution, during the rapid passage of the high-temperature steel rail through the lower and upper guide grooves, the first rolling support, the first middle rolling support, the second rolling support, the first rolling limiter, the first middle rolling limiter, and the second rolling limiter work together to both guide the rail and prevent it from twisting, completely avoiding sliding friction with the high-temperature steel rail and effectively reducing the degree of scratches on the surface of the high-temperature steel rail. Furthermore, the top of the first rolling support is 3-5mm higher vertically than the top surfaces of the first, third, and fifth sliding supports. The top of the first middle rolling support is 3-5mm higher vertically than the top surfaces of the first, second, and third middle sliding supports. The top of the second rolling support is 3-5mm higher vertically than the top surfaces of the second, fourth, and sixth sliding supports. The bottom of the first rolling limit part is 3-5mm lower than the bottom surfaces of the first, third, and fifth sliding limit parts in the vertical direction. The bottom of the first middle rolling limit part is 3-5mm lower than the bottom surfaces of the first, second, and third middle sliding limit parts in the vertical direction. The bottom of the second rolling limit part is 3-5mm lower than the bottom surfaces of the second, fourth, and sixth sliding limit parts in the vertical direction. This effectively reduces the contact area between the high-temperature rail and the lower inlet guide structure / lower outlet guide structure / lower transition guide structure / upper inlet guide structure / upper outlet guide structure / upper transition guide structure, thereby effectively reducing the degree of scratches.

[0012] This application further includes: There are four height adjustment components; two of them are installed on the lower guide seat and are rotatably connected to the two lower rollers respectively, and are used to adjust the height of the corresponding lower rollers in the vertical direction; the other two height adjustment components are installed on the upper guide seat and are rotatably connected to the two upper rollers respectively, and are used to adjust the height of the corresponding upper rollers in the vertical direction.

[0013] By adopting the above technical solution, the distance between the top of the lower roller and the bottom of the upper roller can be adjusted according to the width of the rail head and rail web of the rolled rail, which not only ensures the guiding effect but also improves the versatility of the rolling exit guide.

[0014] This application further specifies that each height adjustment component includes: An eccentric shaft is rotatably mounted on the lower guide seat / upper guide seat; A rotating disk is detachably mounted on one end of an eccentric shaft to drive the eccentric shaft to rotate; multiple locking holes are formed on the rotating disk along the circumferential direction. The locking bolt can connect the rotating disk and the lower / upper guide seat through any of the locking holes; The first bearing has its inner wall fixedly connected to the outer wall of the eccentric shaft, and its outer wall fixedly connected to the inner wall of one end of the lower roller / upper roller. The second bearing has its inner wall fixedly connected to the outer wall of the eccentric shaft, and its outer wall fixedly connected to the inner wall of the other end of the lower / upper roller.

[0015] By adopting the above technical solution, when the rotating disk is disconnected from the lower / upper guide seat, the rotating disk is driven to rotate, thereby driving the eccentric shaft to rotate, thus precisely adjusting the height of the lower / upper roller in the vertical direction by a small margin. After the height adjustment is completed, locking bolts are used to connect the rotating disk to the lower / upper guide seat to restrict the rotating disk from rotating spontaneously.

[0016] This application further includes: The lower position adjustment component is connected at its top to the bottom of the lower guide seat, and is used to drive the lower guide seat to move along its own length. The upper position adjustment component is connected at its bottom to the top of the upper guide seat, and is used to drive the upper guide seat to move along its own length.

[0017] By adopting the above technical solution, the lower position adjustment component is used to drive the lower guide seat to move along its own length direction, so as to precisely adjust the distance between the lower inlet guide structure and the roll pass of the rolling mill in small increments. The upper position adjustment component is used to drive the upper guide seat to move along its own length direction, so as to precisely adjust the distance between the upper inlet guide structure and the roll pass of the rolling mill in small increments. In this way, it is possible to avoid damage to the roll / rolling exit guide caused by the lower / upper inlet guide structure being too close to the roll, and to avoid the high-temperature steel rail being unable to smoothly enter the rolling exit guide due to the excessive distance.

[0018] The present application further provides that: the bottom of the lower guide seat has a sliding groove formed on the opposite sides of the bottom, and a lower drive hole is formed at one end of the bottom; the top of the upper guide seat has an upper sliding groove formed on the opposite sides of the top, and an upper drive hole is formed at one end of the top. The lower position adjustment component includes: The lower fixed seat is used to connect to the frame of a rolling mill that is used in conjunction with a rolling inlet / outlet dual-purpose guide; The lower support is installed on the top of the lower fixed base, and a lower slide rail that matches the lower slide groove is formed on one side of the top. The lower screw is rotatably and axially movable at one end of the lower support base, and a lower drive ring is formed at one end; the lower drive ring is located in the lower drive hole. When the screw rotates, it drives the lower guide seat to move through the lower drive ring and the lower drive hole; The upper position adjustment component includes: The upper fixed seat is used to connect to the frame of a rolling mill that is used in conjunction with a rolling inlet / outlet dual-purpose guide; The upper support base is installed at the bottom end of the upper fixed base, and an upper slide rail that matches the upper slide groove is formed on one side of the bottom end; The upper screw is rotatable and movable along its own axis and is mounted on one end of the upper support base, with an upper drive ring formed at one end; the upper drive ring is located in the upper drive hole. When the upper screw 173 rotates, it drives the upper guide seat 120 to move through the upper drive ring 1731 and the upper drive hole.

[0019] By employing the above technical solution, the lower screw is driven to rotate, causing it to move along its own axial direction. This, in turn, drives the lower guide seat to move precisely in a small amplitude along its own length direction via the lower drive ring and lower drive hole. When the upper screw is driven to rotate, it moves along its own axial direction, driving the upper guide seat to move precisely in a small amplitude along its own length direction via the upper drive ring and upper drive hole.

[0020] The present application further comprises: a lower limit moving groove is formed on one side of the top of the lower fixed seat; and an upper limit moving groove is formed on one side of the bottom of the upper fixed seat. Also includes: The lower limit moving plate has its bottom end able to abut against the lower limit moving groove and its top end able to abut against the lower sliding groove to restrict the movement of the lower guide seat; The upper limit moving block has its top end able to abut against the upper limit moving groove and its bottom end able to abut against the upper sliding groove to restrict the movement of the upper guide seat.

[0021] This application further includes: The lifting ring is detachably installed on the top of the lower guide seat.

[0022] This application further includes: There are multiple floating pads, all of which are arc-shaped structures and are evenly distributed along the circumference of the lower roller. They are floatably installed on the outer wall of the lower roller. There are multiple floating pads, all of which are arc-shaped structures, evenly distributed along the circumference of the upper roller, and each can be floatably installed on the outer wall of the upper roller.

[0023] By adopting the above technical solution, multiple floating lower pads are used to replace the outer wall of the lower roller for flexible contact with the high-temperature steel rail, and multiple floating upper pads are used to replace the outer wall of the upper roller for flexible contact with the high-temperature steel rail, further reducing the degree of scratches on the high-temperature steel rail.

[0024] In summary, the beneficial technical effects of this application are as follows: 1. Before the rail enters the lower and upper guide slots, the lower and upper inlet guide structures work together to both guide the rail and prevent it from twisting due to the high temperature. After the rail enters the lower and upper guide slots, the lower and upper transition guide structures work together to both guide the rail and prevent it from twisting due to the high temperature. When the rail moves out of the lower and upper guide slots, the lower and upper outlet guide structures work together to both guide the rail and prevent it from twisting due to the high temperature. During the rapid passage of the high-temperature rail through the lower and upper guide slots, the two lower rollers and two upper rollers work together to both guide the rail and prevent it from twisting due to the high temperature, and completely avoid sliding friction between the guide and the high-temperature rail, thereby effectively reducing the degree of scratches on the surface of the high-temperature rail and ensuring the quality of the finished product. The rolling inlet / outlet dual-purpose guide can be used as an inlet guide to guide the rails into the rolling mill for the first time during rolling, as an inlet guide to guide the rails back into the rolling mill during the second rolling, and as an outlet guide to guide the rails out of the rolling mill.

[0025] 2. During the rapid passage of the high-temperature steel rail through the lower and upper guide grooves, the first rolling support, the first middle rolling support, the second rolling support, the first rolling limiter, the first middle rolling limiter, and the second rolling limiter work together to both guide the rail and prevent it from twisting, completely avoiding sliding friction with the high-temperature steel rail and effectively reducing surface scratches. Furthermore, the top of the first rolling support is vertically 3-5mm higher than the top surfaces of the first, third, and fifth sliding supports. The top of the first middle rolling support is vertically 3-5mm higher than the top surfaces of the first, second, and third middle sliding supports. The top of the second rolling support is vertically 3-5mm higher than the top surfaces of the second, fourth, and sixth sliding supports. The bottom of the first rolling limit part is 3-5mm lower in the vertical direction than the bottom surfaces of the first, third, and fifth sliding limit parts, respectively. The bottom of the first middle rolling limit part is 3-5mm lower in the vertical direction than the bottom surfaces of the first, second, and third middle sliding limit parts, respectively. The bottom of the second rolling limit part is 3-5mm lower in the vertical direction than the bottom surfaces of the second, fourth, and sixth sliding limit parts, respectively. This effectively reduces the contact area between the high-temperature rail and the lower inlet guide structure / lower outlet guide structure / lower transition guide structure / upper inlet guide structure / upper outlet guide structure / upper transition guide structure, thereby effectively reducing the degree of sliding scratches.

[0026] 3. Two height adjustment components are used to adjust the vertical height of the corresponding lower rollers, and the other two height adjustment components are used to adjust the vertical height of the corresponding upper rollers. The distance between the top of the lower roller and the bottom of the upper roller can be adjusted according to the width of the rail head and web of the rolled rail, ensuring both the guiding effect and improving the versatility of the rolling exit guide.

[0027] 4. When the rotating disk is disconnected from the lower / upper guide seat, drive the rotating disk to rotate, thereby driving the eccentric shaft to precisely adjust the vertical height of the lower / upper roller by a small margin. After completing the height adjustment, use locking bolts to connect the rotating disk to the lower / upper guide seat to restrict the rotating disk from rotating on its own.

[0028] 5. The lower position adjustment assembly drives the lower guide seat to move along its own length direction to precisely adjust the distance between the lower inlet guide structure and the roll pass of the rolling mill in small increments. The upper position adjustment assembly drives the upper guide seat to move along its own length direction to precisely adjust the distance between the upper inlet guide structure and the roll pass of the rolling mill in small increments. This avoids damage to the roll / roll exit guide caused by the lower / upper inlet guide structure being too close to the roll, and also avoids the high-temperature rail being unable to smoothly enter the roll exit guide due to excessive distance. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the cross-section of the rail; Figure 2 This is a schematic diagram of a structure of an embodiment of a rolling inlet / outlet dual-purpose guide; Figure 3 yes Figure 2 The diagram shows the combined structure of the lower guide seat and the lower roller in a rolling inlet / outlet dual-purpose guide. Figure 4 yes Figure 2 The diagram shows the combined structure of the upper guide seat and the upper roller in a rolling inlet / outlet dual-purpose guide. Figure 5 yes Figure 2 The front view of the rolling inlet / outlet dual-purpose guide shown; Figure 6 yes Figure 5 The rolling inlet / outlet dual-purpose guide shown is a cross-sectional view along AA. Figure 7 yes Figure 6 A magnified view of a portion of region B in the middle; Figure 8 yes Figure 2 The diagram shows the combined structure of the lower guide seat, lower roller, and lower position adjustment assembly in a rolling inlet / outlet dual-purpose guide. Figure 9 yes Figure 2 The diagram shows the combined structure of the upper guide seat, upper roller, and upper position adjustment assembly in a rolling inlet / outlet dual-purpose guide. Figure 10 yes Figure 2 The diagram shows the structure of the lower position adjustment component of the rolling inlet / outlet dual-purpose guide. Figure 11 yes Figure 2 The diagram shows the structure of the upper position adjustment component of the rolling inlet / outlet dual-purpose guide. Figure 12 This is a schematic diagram of the combined structure of another embodiment of the lower guide seat and the upper guide seat; Figure 13This is a schematic diagram of the combined structure of the lower roller and the lower floating pad; Figure 14 This is a schematic diagram of the combined structure of the upper roller and the upper floating pad.

[0030] Reference numerals: 110, Lower guide seat; 111, Lower inlet guide structure; 1111, First side sliding support; 1112, First middle sliding support; 1113, Second side sliding support; 1114, Lower support rib; 11141, Lower adjustment hole; 112, Lower outlet guide structure; 1121, Third side sliding support; 1122, Second middle sliding support; 1123, Fourth side sliding support; 113, Lower transition guide structure; 1131, Fifth side sliding support; 1132, Third middle sliding support; 1133, Sixth side sliding support; 114, Lower sliding groove; 120, Upper guide seat; 121, Upper inlet guide structure Structure; 1211, First side sliding limit part; 1212, First middle sliding limit part; 1213, Second side sliding limit part; 1214, Upper support rib; 12141, Upper adjustment hole; 122, Upper outlet guide structure; 1221, Third side sliding limit part; 1222, Second middle sliding limit part; 1223, Fourth side sliding limit part; 123, Upper transition guide structure; 1231, Fifth side sliding limit part; 1232, Third middle sliding limit part; 1233, Sixth side sliding limit part; 124, Upper slide groove; 130, Lower roller; 131, First end rolling support part; 132, First middle rolling support part; 133, Second end rolling support part Support part; 134, lower limit hole; 140, upper roller; 141, first end rolling limit part; 142, first middle rolling limit part; 143, second end rolling limit part; 144, upper limit hole; 150, height adjustment assembly; 151, eccentric shaft; 1511, lubricating oil inlet; 1512, lubricating oil outlet; 1513, lubricating oil flow channel; 152, rotating disk; 1521, locking hole; 153, locking bolt; 154, first bearing; 155, second bearing; 160, lower position adjustment assembly; 161, lower fixed seat; 1611, lower limit moving groove; 162, lower support seat; 1621, lower slide rail; 163, lower screw; 163 1. Lower drive ring; 164. Lower half nut; 170. Upper position adjustment assembly; 171. Upper fixed seat; 1711. Upper limit moving groove; 172. Upper support seat; 1721. Upper slide rail; 173. Upper screw; 1731. Upper drive ring; 174. Upper half nut; 181. Lower limit moving plate; 182. Upper limit moving block; 183. Lifting ring; 1911. Lower floating pad; 1912. Lower guide pin; 1913. Lower limit plate; 1914. Lower top spring; 1921. Upper floating pad; 1922. Upper guide pin; 1923. Upper limit plate; 1924. Upper top spring; 200. Rail; 210. Rail head; 220. Rail web; 230. Rail base. Detailed Implementation

[0031] It should be noted in advance that, if Figure 1 As shown, the rail 200 includes a rail head 210, a rail web 220, and a rail base 230 connected in sequence. During the rolling production of the rail 200, there are strict requirements for the dimensional accuracy of the width W1 of the rail head 210 and the width W2 of the rail web 220, while there are requirements for the width of the rail base 230, but the requirements are relatively more lenient.

[0032] The following is in conjunction with the appendix Figure 2-14 This application will be described in further detail.

[0033] Reference Figure 2 , Figure 3 and Figure 4 This application discloses a rolling dual-purpose inlet / outlet guide, including a lower guide seat 110, an upper guide seat 120, two lower rollers 130, and two upper rollers 140. The lower guide seat 110 has a lower guide groove formed inside. One end of the lower guide seat 110 has a lower inlet guide structure 111, and the other end has a lower outlet guide structure 112. A lower transition guide structure 113 is formed in the middle of the lower guide seat 110. The upper guide seat 120 is disposed above the lower guide seat 110 and has an upper guide groove formed inside. One end of the upper guide seat 120 has an upper inlet guide structure 121, and the other end has an upper outlet guide structure 122. An upper transition guide structure 123 is formed in the middle of the upper guide seat 120. One of the lower rollers 130 is rotatably mounted inside the lower guide seat 110 and is located between the lower inlet guide structure 111 and the lower transition guide structure 113. Another lower roller 130 is rotatably mounted within the lower guide seat 110 and is located between the lower transition guide structure 113 and the lower outlet guide structure 112. One upper roller 140 is rotatably mounted within the upper guide seat 120 and is located between the upper inlet guide structure 121 and the upper transition guide structure 123. Another upper roller 140 is rotatably mounted within the upper guide seat 120 and is located between the upper transition guide structure 123 and the upper outlet guide structure 122. It should be noted that... Figure 2The direction of the arrow indicates the travel direction of the high-temperature rail 200. Before the rail 200 enters the lower and upper guide slots, the lower inlet guide structure 111 and the upper inlet guide structure 121 cooperate to both guide and prevent the high-temperature rail 200 from twisting. After the rail 200 enters the lower and upper guide slots, the lower transition guide structure 113 and the upper transition guide structure 123 cooperate to both guide and prevent the high-temperature rail 200 from twisting. When the rail 200 moves out of the lower and upper guide slots, the lower outlet guide structure 112 cooperates to both guide and prevent the high-temperature rail 200 from twisting. During the rapid passage of the high-temperature steel rail 200 through the lower and upper guide grooves, the two lower rollers 130 and the two upper rollers 140 work together to guide the rail and prevent it from twisting. This also completely avoids sliding friction between the guide and the high-temperature steel rail 200, effectively reducing surface scratches and ensuring the quality of the finished product. It should be noted that the rolling inlet / outlet dual-purpose guide can be used as an inlet guide for the initial entry of the rail into the rolling mill during primary rolling, as an inlet guide for the rail's re-entry during secondary rolling, and as an outlet guide for the rail's exit from the rolling mill.

[0034] Reference Figure 3 and Figure 4In one embodiment, the lower inlet guide structure 111 is provided with a first side sliding support 1111, a first middle sliding support 1112, and a second side sliding support 1113 sequentially from one side to the other. The top surface of the first side sliding support 1111 is higher than the top surface of the second side sliding support 1113 in the vertical direction. The top surface of the first middle sliding support 1112 is higher than the top surface of the first side sliding support 1111 in the vertical direction. The first side sliding support 1111 provides sliding support for the bottom of the rail head 210 of the rail 200. The first middle sliding support 1112 provides sliding support for the bottom of the rail web 220 of the rail 200. The second side sliding support 1113 provides sliding support for the bottom of the rail bottom 230 of the rail 200. The upper inlet guide structure 121 is provided with a first side sliding limit 1211, a first middle sliding limit 1212, and a second side sliding limit 1213 sequentially from one side to the other. The bottom surface of the first sliding limiting part 1211 is lower than the bottom surface of the second sliding limiting part 1213 in the vertical direction. The bottom surface of the first intermediate sliding limiting part 1212 is lower than the bottom surface of the first sliding limiting part 1211 in the vertical direction. The first sliding limiting part 1211 provides a sliding limiting function for the top of the rail head 210 of the rail 200. The first intermediate sliding limiting part 1212 provides a sliding limiting function for the top of the rail web 220 of the rail 200. The second sliding limiting part 1213 provides a sliding limiting function for the top of the rail base 230 of the rail 200. Before the rail 200 enters the lower guide groove and the upper guide groove, the first side sliding support 1111, the first middle sliding support 1112, the second side sliding support 1113, the first side sliding limit 1211, the first middle sliding limit 1212 and the second side sliding limit 1213 cooperate to both guide and prevent the high-temperature rail 200 from twisting.

[0035] Reference Figure 3 and Figure 4In one embodiment, the lower outlet guide structure 112 is provided with a third side sliding support 1121, a second middle sliding support 1122, and a fourth side sliding support 1123 sequentially from one side to the other. The top surface of the third side sliding support 1121 is higher than the top surface of the fourth side sliding support 1123 in the vertical direction. The top surface of the second middle sliding support 1122 is higher than the top surface of the third side sliding support 1121 in the vertical direction. The third side sliding support 1121 provides sliding support for the bottom of the rail head 210 of the rail 200. The second middle sliding support 1122 provides sliding support for the bottom of the rail web 220 of the rail 200. The fourth side sliding support 1123 provides sliding support for the bottom of the rail bottom 230 of the rail 200. The upper outlet guide structure 122 is provided with a third side sliding limit 1221, a second middle sliding limit 1222, and a fourth side sliding limit 1223 sequentially from one side to the other. The bottom surface of the third sliding limit part 1221 is vertically lower than the bottom surface of the fourth sliding limit part 1223. The bottom surface of the second sliding limit part 1222 is vertically lower than the bottom surface of the third sliding limit part 1221. The third sliding limit part 1221 provides a sliding limit to the top of the rail head 210 of the rail 200. The second sliding limit part 1222 provides a sliding limit to the top of the rail web 220 of the rail 200. The fourth sliding limit part 1223 provides a sliding limit to the top of the rail base 230 of the rail 200. When the rail 200 moves out of the lower guide groove and the upper guide groove, the third side sliding support 1121, the second middle sliding support 1122, the fourth side sliding support 1123, the third side sliding limit 1221, the second middle sliding limit 1222 and the fourth side sliding limit 1223 cooperate to both guide and prevent the high temperature rail 200 from twisting.

[0036] Reference Figure 3 and Figure 4In one embodiment, the lower transition guide structure 113 is provided with a fifth side sliding support 1131, a third middle sliding support 1132, and a sixth side sliding support 1133 sequentially from one side to the other. The top surface of the fifth side sliding support 1131 is higher than the top surface of the sixth side sliding support 1133 in the vertical direction. The top surface of the third middle sliding support 1132 is higher than the top surface of the fifth side sliding support 1131 in the vertical direction. The fifth side sliding support 1131 provides sliding support for the bottom of the rail head 210 of the rail 200. The third middle sliding support 1132 provides sliding support for the bottom of the rail web 220 of the rail 200. The sixth side sliding support 1133 provides sliding support for the bottom of the rail base 230 of the rail 200. The upper transition guide structure 123 is provided with a fifth side sliding limit part 1231, a third middle sliding limit part 1232, and a sixth side sliding limit part 1233 sequentially from one side to the other. The bottom surface of the fifth side sliding limit part 1231 is vertically lower than the bottom surface of the sixth side sliding limit part 1233. The bottom surface of the third middle sliding limit part 1232 is vertically lower than the bottom surface of the fifth side sliding limit part 1231. The fifth side sliding limit part 1231 provides a sliding limit to the top of the rail head 210 of the rail 200. The third middle sliding limit part 1232 provides a sliding limit to the top of the rail web 220 of the rail 200. The sixth side sliding limit part 1233 provides a sliding limit to the top of the rail base 230 of the rail 200. After the rail 200 enters the lower guide groove and the upper guide groove, the fifth side sliding support 1131, the third middle sliding support 1132, the sixth side sliding support 1133, the fifth side sliding limit 1231, the third middle sliding limit 1232 and the sixth side sliding limit 1233 cooperate to both guide and prevent the high-temperature rail 200 from twisting.

[0037] It should be noted that the top of the cross-sections of the first sliding support 1112, the second sliding support 1122, and the third sliding support 1132 are arc-shaped, and the bottom of the cross-sections of the first sliding limiting part 1212, the second sliding limiting part 1222, and the third sliding limiting part 1232 are arc-shaped. This effectively avoids sharp edges, thereby effectively reducing the degree of scratches on the high-temperature steel rail 200. The end of the first sliding support 1112 away from the second sliding support 1122 is bent downwards, the end of the second sliding support 1122 away from the first sliding support 1112 is bent downwards, the end of the first sliding limiting part 1212 away from the second sliding limiting part 1222 is bent upwards, and the end of the second sliding limiting part 1222 away from the first sliding limiting part 1212 is bent upwards. The top surfaces of the first sliding support 1111 and the third sliding support 1121 are both inclined surfaces, as are the bottom surfaces of the first sliding limit part 1211 and the third sliding limit part 1221. This facilitates the smooth entry and exit of the high-temperature steel rail 200 from the guide groove.

[0038] Reference Figure 3 and Figure 4In one embodiment, each lower roller 130 is provided with a first end rolling support 131, a first middle rolling support 132, and a second end rolling support 133 sequentially from one end to the other. The top of the first end rolling support 131 is higher than the top of the second end rolling support 133 in the vertical direction. The top of the first middle rolling support 132 is higher than the top of the first end rolling support 131 in the vertical direction. The first end rolling support 131 provides rolling support to the bottom of the rail head 210 of the rail 200. The first middle rolling support 132 provides rolling support to the bottom of the rail web 220 of the rail 200. The second end rolling support 133 provides rolling support to the bottom of the rail bottom 230 of the rail 200. Each upper roller 140 is provided with a first end rolling limiter 141, a first middle rolling limiter 142, and a second end rolling limiter 143 sequentially from one end to the other. The bottom of the first rolling limit part 141 is lower than the bottom of the second rolling limit part 143 in the vertical direction. The bottom of the first intermediate rolling limit part 142 is lower than the bottom of the first rolling limit part 141 in the vertical direction. The first rolling limit part 141 provides rolling limit for the top of the rail head 210 of the rail 200. The first intermediate rolling limit part 142 provides rolling limit for the top of the rail web 220 of the rail 200. The second rolling limit part 143 provides rolling limit for the top of the rail bottom 230 of the rail 200. During the rapid passage of the high-temperature steel rail 200 through the lower and upper guide grooves, the first end rolling support 131, the first middle rolling support 132, the second end rolling support 133, the first end rolling limiter 141, the first middle rolling limiter 142, and the second end rolling limiter 143 work together to both guide the rail and prevent it from twisting, thus completely avoiding sliding friction with the high-temperature steel rail 200 and effectively reducing surface scratches. Furthermore, the top of the first end rolling support 131 is vertically 3-5mm higher than the top surfaces of the first side sliding support 1111, the third side sliding support 1121, and the fifth side sliding support 1131, respectively. Similarly, the top of the first middle rolling support 132 is vertically 3-5mm higher than the top surfaces of the first middle sliding support 1112, the second middle sliding support 1122, and the third middle sliding support 1132, respectively. The top of the second-end rolling support 133 is 3-5 mm higher than the top surfaces of the second-side sliding support 1113, the fourth-side sliding support 1123, and the sixth-side sliding support 1133 in the vertical direction. The bottom of the first-end rolling limiting part 141 is 3-5 mm lower than the bottom surfaces of the first-side sliding limiting part 1211, the third-side sliding limiting part 1221, and the fifth-side sliding limiting part 1231 in the vertical direction.The bottom of the first rolling limiting part 142 is 3-5 mm lower in the vertical direction than the bottom surfaces of the first sliding limiting part 1212, the second sliding limiting part 1222, and the third sliding limiting part 1232. Similarly, the bottom of the second rolling limiting part 143 is 3-5 mm lower in the vertical direction than the bottom surfaces of the second side sliding limiting part 1213, the fourth side sliding limiting part 1223, and the sixth side sliding limiting part 1233. This effectively reduces the contact area between the high-temperature steel rail 200 and the lower inlet guide structure 111, lower outlet guide structure 112, lower transition guide structure 113, upper inlet guide structure 121, upper outlet guide structure 122, and upper transition guide structure 123, thereby effectively reducing the degree of scratches.

[0039] Reference Figure 5 , Figure 6 and Figure 7In one embodiment, the rolling inlet / outlet dual-purpose guide further includes four height adjustment components 150. Two height adjustment components 150 are respectively mounted on the lower guide seat 110 and rotatably connected to two lower rollers 130, respectively, for adjusting the vertical height of the corresponding lower rollers 130. The other two height adjustment components 150 are respectively mounted on the upper guide seat 120 and rotatably connected to two upper rollers 140, respectively, for adjusting the vertical height of the corresponding upper rollers 140. In this way, the distance between the top of the lower roller 130 and the bottom of the upper roller 140 can be adjusted according to the width of the rail head 210 and the rail web 220 of the rolled rail 200, which not only ensures the guiding effect but also improves the versatility of the rolling outlet guide. Specifically, each height adjustment component 150 includes an eccentric shaft 151, a rotating disk 152, a locking bolt 153, a first bearing 154, and a second bearing 155. An eccentric shaft 151 is rotatably mounted on the lower guide seat 110 / upper guide seat 120. A rotating disk 152 is detachably mounted on one end of the eccentric shaft 151 to drive the eccentric shaft 151 to rotate. This facilitates the assembly, use, disassembly, and replacement of the rotating disk 152 and the eccentric shaft 151. Multiple locking holes 1521 are formed circumferentially on the rotating disk 152. A locking bolt 153 can connect the rotating disk 152 and the lower guide seat 110 / upper guide seat 120 through any one of the locking holes 1521. The inner wall of the first bearing 154 is fixedly connected to the outer wall of the eccentric shaft 151, and the outer wall is fixedly connected to the inner wall of one end of the lower roller 130 / upper roller 140. The inner wall of the second bearing 155 is fixedly connected to the outer wall of the eccentric shaft 151, and the outer wall is fixedly connected to the inner wall of the other end of the lower roller 130 / upper roller 140. When the rotating disk 152 is disconnected from the lower guide seat 110 / upper guide seat 120, the rotating disk 152 is driven to rotate, thereby driving the eccentric shaft 151 to rotate, thus precisely adjusting the vertical height of the lower roller 130 / upper roller 140 by a small margin. It should be noted that the rotating disk 152 can rotate 180°. After completing the height adjustment, the locking bolt 153 is used to connect the rotating disk 152 to the lower guide seat 110 / upper guide seat 120 to restrict the spontaneous rotation of the rotating disk 152.

[0040] It should be noted that, as Figure 6 and Figure 7As shown, theoretically, to ensure the guiding effect and precisely control the width of the rail head 210 and rail web 220, the first end rolling support 131 of each lower roller 130 should be tightly fitted with the bottom end of the rail head 210, and the first middle rolling support 132 should be tightly fitted with the bottom end of the rail web 220. The first end rolling limit 141 of each upper roller 140 should be tightly fitted with the top end of the rail head 210, and the first middle rolling limit 142 should be tightly fitted with the top end of the rail web 220. Correspondingly, a certain gap should be reserved between the second end rolling support 133 of each lower roller 130 and the bottom end of the rail base 230, and a certain gap should be reserved between the second end rolling limit 143 of each upper roller 140 and the top end of the rail base 230, so that the width of the rail base 230 can be adaptively changed. In practical applications, a 0.5-1.5mm gap is reserved between the first end rolling support 131 of each lower roller 130 and the bottom end of the rail head 210, and a 0.5-1.5mm gap is reserved between the first end rolling support 132 and the bottom end of the rail web 220. A 0.5-1.5mm gap is reserved between the first end rolling limit 141 of each upper roller 140 and the top end of the rail head 210, and a 0.5-1.5mm gap is reserved between the first end rolling limit 142 and the top end of the rail web 220. A 1.5-2mm gap should be reserved between the second end rolling support 133 of each lower roller 130 and the bottom end of the rail base 230, and a 1.5-2mm gap should be reserved between the second end rolling limit 143 of each upper roller 140 and the top end of the rail base 230. In this way, the second end rolling support part 133 / second end rolling limit part 143 does not contact the rail bottom 230, leaving space for the deformation of the rail bottom 230.

[0041] Reference Figure 8 and Figure 9 In one embodiment, the rolling inlet / outlet dual-purpose guide further includes a lower position adjustment component 160 and an upper position adjustment component 170. The top end of the lower position adjustment component 160 is connected to the bottom end of the lower guide seat 110, and is used to drive the lower guide seat 110 to move along its own length direction to precisely adjust the distance between the lower inlet guide structure 111 and the roll pass of the rolling mill in small increments. The bottom end of the upper position adjustment component 170 is connected to the top end of the upper guide seat 120, and is used to drive the upper guide seat 120 to move along its own length direction to precisely adjust the distance between the upper inlet guide structure 121 and the roll pass of the rolling mill in small increments. In this way, it is avoided that the lower inlet guide structure 111 / upper inlet guide structure 121 is too close to the roll, which would cause damage to the roll / rolling outlet guide, and it is also avoided that the distance is too far, which would prevent the high-temperature steel rail 200 from smoothly entering the rolling outlet guide.

[0042] Reference Figure 8 , Figure 9 , Figure 10 and Figure 11In one embodiment, the lower guide seat 110 has sliding grooves 114 formed on opposite sides of its bottom, and a lower drive hole formed at one end of its bottom. The upper guide seat 120 has upper sliding grooves 124 formed on opposite sides of its top, and an upper drive hole formed at one end of its top. The lower position adjustment assembly 160 includes a lower fixed seat 161, a lower support seat 162, and a lower screw 163. The lower fixed seat 161 is used to connect to the frame of a rolling mill that is used with rolling inlet / outlet dual-purpose guides. The lower support seat 162 is mounted on the top of the lower fixed seat 161, and a sliding rail 1621 matching the sliding grooves 114 is formed on one side of the top. The sliding rail 1621 and the sliding grooves 114 cooperate to guide the movement of the lower guide seat 110. The lower screw 163 is rotatably and movably mounted on one end of the lower support seat 162, and a lower drive ring 1631 is formed at one end. The lower drive ring 1631 is located within the lower drive hole of the lower guide seat 110. When the lower screw 163 rotates, it drives the lower guide seat 110 to move via the lower drive ring 1631 and the lower drive hole. When the lower screw 163 is driven to rotate, it moves along its own axial direction, and drives the lower guide seat 110 to move precisely in a small amplitude along its own length direction via the lower drive ring 1631 and the lower drive hole. It should be noted that one end of the top surface of the lower support seat 162 has a receiving hole for accommodating and fixing the lower half nut 164, and the lower half nut 164 cannot rotate within the receiving hole. The outer wall of the lower screw 163 is screwed to the inner wall of the lower half nut 164. The upper position adjustment assembly 170 includes an upper fixed seat 171, an upper support seat 172, and an upper screw 173. The upper fixed seat 171 is used to connect to the stand of a rolling mill that is used with a rolling inlet / outlet dual-purpose guide. The upper support 172 is mounted on the bottom end of the upper fixed base 171, and an upper slide rail 1721 matching the upper slide groove 124 is formed on one side of the bottom end. The upper slide rail 1721 and the upper slide groove 124 cooperate to guide the movement of the upper guide seat 120. The upper screw 173 is rotatably and axially movable on one end of the upper support 172, and an upper drive ring 1731 is formed on one end. The upper drive ring 1731 is located in the upper drive hole of the upper guide seat 120. When the upper screw 173 rotates, it drives the upper guide seat 120 to move through the upper drive ring 1731 and the upper drive hole. When the upper screw 173 is driven to rotate, the upper screw 173 moves axially, and drives the upper guide seat 120 to move precisely in a small range along its own length direction through the upper drive ring 1731 and the upper drive hole. It should be noted that one end of the bottom of the upper support 172 has a receiving hole for accommodating and fixing the upper half nut 174. The upper half nut 174 cannot rotate within the receiving hole. The outer wall of the upper screw 173 is screwed to the inner wall of the upper half nut 174. It should be noted that the upper guide seat 120 and the lower guide seat 110 can move 0-15mm along their own length direction.

[0043] Reference Figure 12 In another embodiment, the lower inlet guide structure 111 further includes a lower support rib 1114. A lower adjustment hole 11141 is formed on the lower support rib 1114. The first side sliding support portion 1111 and the first middle sliding support portion 1112 are fixedly connected to the lower support rib 1114 through the lower adjustment hole 11141. The upper inlet guide structure 121 further includes an upper support rib 1214. An upper adjustment hole 12141 is formed on the upper support rib 1214. The first side sliding limiting portion 1211 and the first middle sliding limiting portion 1212 are fixedly connected to the upper support rib 1214 through the upper adjustment hole 12141. Before fine-tuning the positions of the first middle sliding support 1112 and the first middle sliding limit 1212 using the lower position adjustment component 160 and the upper position adjustment component 170, the positions of the first middle sliding support 1112 and the first middle sliding limit 1212 are first coarsely adjusted by means of the lower adjustment hole 11141 and the upper adjustment hole 12141. This ensures both efficiency and accuracy in position adjustment.

[0044] Reference Figure 8 and Figure 9 In one embodiment, a lower limit moving groove 1611 is formed on one side of the top of the lower fixed seat 161. An upper limit moving groove 1711 is formed on one side of the bottom of the upper fixed seat 171. The rolling inlet / outlet dual-purpose guide also includes a lower limit moving plate 181 and an upper limit moving block 182. The bottom end of the lower limit moving plate 181 can abut against the lower limit moving groove 1611, and the top end can abut against the lower sliding groove 114 to restrict the movement of the lower guide seat 110. When the bottom end of the lower limit moving plate 181 disengages from the lower limit moving groove 1611 and the top end disengages from the lower sliding groove 114, the lower guide seat 110 can move along its own length direction. The top end of the upper limit moving block 182 can abut against the upper limit moving groove 1711, and the bottom end can abut against the upper sliding groove 124 to restrict the movement of the upper guide seat 120. When the top end of the upper limit moving block 182 disengages from the upper limit moving groove 1711 and the bottom end disengages from the upper sliding groove 124, the upper guide seat 120 can move along its own length direction.

[0045] Reference Figure 8 In one embodiment, the rolling inlet / outlet dual-purpose guide also includes a lifting ring 183. The lifting ring 183 is detachably mounted on the top of the lower guide seat 110 to facilitate its assembly and disassembly. The lifting ring 183 cooperates with a lifting device to facilitate the repositioning of the lower guide seat 110. The lifting ring 183 is removed before assembling the lower guide seat 110 and the upper guide seat 120.

[0046] Reference Figure 13 and Figure 14In another embodiment, the interior of the lower roller 130 has a plurality of lower limiting holes 134 uniformly formed circumferentially. The interior of the upper roller 140 has a plurality of upper limiting holes 144 uniformly formed circumferentially. The rolling inlet / outlet dual-purpose guide also includes a plurality of lower floating pads 1911, a plurality of lower guide pins 1912, a plurality of lower limiting plates 1913, a plurality of lower top springs 1914, a plurality of upper floating pads 1921, a plurality of upper guide pins 1922, a plurality of upper limiting plates 1923, and a plurality of upper top springs 1924. The plurality of lower floating pads 1911 are all arc-shaped structures, uniformly distributed circumferentially along the lower roller 130, and are respectively floatingly mounted on the outer wall of the lower roller 130. The plurality of lower limiting plates 1913 are installed in the lower limiting holes 134 in a one-to-one correspondence with the plurality of lower limiting holes 134. Multiple lower guide pins 1912 are fixedly connected at one end to the recessed side of multiple lower floating pads 1911, and at the other end to multiple lower limit plates 1913. Multiple lower top springs 1914 are sleeved on the lower guide pins 1912, one end abutting against the recessed side of the corresponding lower floating plate, and the other end abutting against the outer wall of the lower roller 130. Multiple upper floating pads 1921 are all arc-shaped structures, evenly distributed along the circumference of the upper roller 140, and are respectively floatingly installed on the outer wall of the upper roller 140. Multiple upper limit plates 1923 are installed in the upper limit holes 144, one-to-one with the upper limit holes 144. Multiple upper guide pins 1922 are fixedly connected at one end to the recessed side of multiple upper floating pads 1921, and at the other end to multiple upper limit plates 1923. Multiple upper top springs 1924 and multiple upper guide pins 1922 are correspondingly fitted onto the upper guide pins 1922, with one end abutting against the recessed side of the corresponding upper floating plate and the other end abutting against the outer wall of the upper roller 140. Multiple floating lower pads 1911 replace the outer wall of the lower roller 130 to make flexible contact with the high-temperature steel rail 200, and multiple floating upper pads 1921 replace the outer wall of the upper roller 140 to make flexible contact with the high-temperature steel rail 200, further reducing the degree of scratches on the high-temperature steel rail 200.

[0047] The implementation principle of this embodiment is as follows: Before the rail 200 enters the lower guide groove and the upper guide groove, the lower inlet guide structure 111 and the upper inlet guide structure 121 cooperate to both guide and prevent the high-temperature rail 200 from twisting. After the rail 200 enters the lower guide groove and the upper guide groove, the lower transition guide structure 113 and the upper transition guide structure 123 cooperate to both guide and prevent the high-temperature rail 200 from twisting. When the rail 200 moves out of the lower guide groove and the upper guide groove, the lower outlet guide structure 112 cooperates to both guide and prevent the high-temperature rail 200 from twisting. During the rapid passage of the high-temperature steel rail 200 through the lower and upper guide grooves, the two lower rollers 130 and the two upper rollers 140 work together to both guide the rail and prevent it from twisting, thus completely avoiding sliding friction between the high-temperature steel rail 200 and the rail. This effectively reduces the degree of scratches on the surface of the high-temperature steel rail 200 and ensures the quality of the finished product.

[0048] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A rolling inlet / outlet dual-purpose guide, characterized in that, include: The lower guide seat (110) has a lower guide groove inside, a lower inlet guide structure (111) at one end, a lower outlet guide structure (112) at the other end, and a lower transition guide structure (113) in the middle of the interior. The upper guide seat (120) is located above the lower guide seat (110), and has an upper guide groove inside. One end has an upper inlet guide structure (121), the other end has an upper outlet guide structure (122), and the middle part inside has an upper transition guide structure (123). There are two lower rollers (130); one of the lower rollers (130) is rotatably mounted in the lower guide seat (110) and located between the lower inlet guide structure (111) and the lower transition guide structure (113); the other lower roller (130) is rotatably mounted in the lower guide seat (110) and located between the lower transition guide structure (113) and the lower outlet guide structure (112); There are two upper rollers (140); one of the upper rollers (140) is rotatably mounted in the upper guide seat (120) and located between the upper inlet guide structure (121) and the upper transition guide structure (123); the other upper roller (140) is rotatably mounted in the upper guide seat (120) and located between the upper transition guide structure (123) and the upper outlet guide structure (122).

2. The rolling inlet / outlet dual-purpose guide according to claim 1, characterized in that, The lower inlet guide structure (111) is provided with a first side sliding support (1111), a first middle sliding support (1112), and a second side sliding support (1113) in sequence from one side to the other; the top surface of the first side sliding support (1111) is higher than the top surface of the second side sliding support (1113) in the vertical direction; the top surface of the first middle sliding support (1112) is higher than the top surface of the first side sliding support (1111) in the vertical direction; The upper inlet guide structure (121) is provided with a first side sliding limit part (1211), a first middle sliding limit part (1212), and a second side sliding limit part (1213) in sequence from one side to the other side; the bottom surface of the first side sliding limit part (1211) is lower than the bottom surface of the second side sliding limit part (1213) in the vertical direction; the bottom surface of the first middle sliding limit part (1212) is lower than the bottom surface of the first side sliding limit part (1211) in the vertical direction; The lower outlet guide structure (112) is provided with a third side sliding support (1121), a second middle sliding support (1122), and a fourth side sliding support (1123) in sequence from one side to the other; the top surface of the third side sliding support (1121) is higher than the top surface of the fourth side sliding support (1123) in the vertical direction; the top surface of the second middle sliding support (1122) is higher than the top surface of the third side sliding support (1121) in the vertical direction; The upper outlet guide structure (122) is provided with a third side sliding limit part (1221), a second middle sliding limit part (1222), and a fourth side sliding limit part (1223) in sequence from one side to the other side; the bottom surface of the third side sliding limit part (1221) is lower than the bottom surface of the fourth side sliding limit part (1223) in the vertical direction; the bottom surface of the second middle sliding limit part (1222) is lower than the bottom surface of the third side sliding limit part (1221) in the vertical direction; The lower transition guide structure (113) is provided with a fifth side sliding support (1131), a third middle sliding support (1132), and a sixth side sliding support (1133) in sequence from one side to the other; the top surface of the fifth side sliding support (1131) is higher than the top surface of the sixth side sliding support (1133) in the vertical direction; the top surface of the third middle sliding support (1132) is higher than the top surface of the fifth side sliding support (1131) in the vertical direction. The upper transition guide structure (123) is provided with a fifth side sliding limit part (1231), a third middle sliding limit part (1232) and a sixth side sliding limit part (1233) in sequence from one side to the other side; the bottom surface of the fifth side sliding limit part (1231) is lower than the bottom surface of the sixth side sliding limit part (1233) in the vertical direction; the bottom surface of the third middle sliding limit part (1232) is lower than the bottom surface of the fifth side sliding limit part (1231) in the vertical direction.

3. The rolling inlet / outlet dual-purpose guide according to claim 2, characterized in that, Each of the lower rollers (130) is provided with a first end rolling support (131), a first middle rolling support (132), and a second end rolling support (133) sequentially from one end to the other; the top of the first end rolling support (131) is higher than the top of the second end rolling support (133) in the vertical direction; the top of the first middle rolling support (132) is higher than the top of the first end rolling support (131) in the vertical direction; the top of the first end rolling support (131) is higher than the first side sliding support (1111) in the vertical direction. The top surfaces of the third side sliding support (1121) and the fifth side sliding support (1131); the top of the first middle rolling support (132) is vertically higher than the top surfaces of the first middle sliding support (1112), the second middle sliding support (1122), and the third middle sliding support (1132); the top of the second end rolling support (133) is vertically higher than the top surfaces of the second side sliding support (1113), the fourth side sliding support (1123), and the sixth side sliding support (1133). Each of the upper rollers (140) is provided with a first end rolling limit part (141), a first middle rolling limit part (142), and a second end rolling limit part (143) sequentially from one end to the other; the bottom of the first end rolling limit part (141) is lower than the bottom of the second end rolling limit part (143) in the vertical direction; the bottom of the first middle rolling limit part (142) is lower than the bottom of the first end rolling limit part (141) in the vertical direction; the bottom of the first end rolling limit part (141) is lower than the first side sliding limit part (1211) in the vertical direction. The bottom surfaces of the third side sliding limit part (1221) and the fifth side sliding limit part (1231); the bottom of the first middle rolling limit part (142) is lower than the bottom surfaces of the first middle sliding limit part (1212), the second middle sliding limit part (1222), and the third middle sliding limit part (1232) in the vertical direction; the bottom of the second end rolling limit part (143) is lower than the bottom surfaces of the second side sliding limit part (1213), the fourth side sliding limit part (1223), and the sixth side sliding limit part (1233) in the vertical direction.

4. The rolling inlet / outlet dual-purpose guide according to any one of claims 1 to 3, characterized in that, Also includes: There are four height adjustment components (150); two of the height adjustment components (150) are respectively installed on the lower guide seat (110) and rotatably connected to the two lower rollers (130) in a one-to-one correspondence, and are respectively used to adjust the height of the corresponding lower rollers (130) in the vertical direction; the other two height adjustment components (150) are respectively installed on the upper guide seat (120) and rotatably connected to the two upper rollers (140) in a one-to-one correspondence, and are respectively used to adjust the height of the corresponding upper rollers (140) in the vertical direction.

5. The rolling inlet / outlet dual-purpose guide according to claim 4, characterized in that, Each of the height adjustment components (150) includes: An eccentric shaft (151) is rotatably mounted on the lower guide seat (110) / the upper guide seat (120); A rotating disk (152) is detachably mounted on one end of the eccentric shaft (151) and is used to drive the eccentric shaft (151) to rotate; a plurality of locking holes (1521) are formed on the rotating disk (152) along the circumferential direction; The locking bolt (153) can connect the rotating disk (152) and the lower guide seat (110) / the upper guide seat (120) through any one of the locking holes (1521); The inner wall of the first bearing (154) is fixedly connected to the outer wall of the eccentric shaft (151), and the outer wall is fixedly connected to the inner wall of one end of the lower roller (130) / the upper roller (140); The inner wall of the second bearing (155) is fixedly connected to the outer wall of the eccentric shaft (151), and the outer wall is fixedly connected to the inner wall of the other end of the lower roller (130) / the upper roller (140).

6. The rolling inlet / outlet dual-purpose guide according to any one of claims 1 to 3, characterized in that, Also includes: The lower position adjustment component (160) is connected at its top end to the bottom end of the lower guide seat (110) and is used to drive the lower guide seat (110) to move along its own length direction. The upper position adjustment component (170) is connected at its bottom end to the top end of the upper guide seat (120) and is used to drive the upper guide seat (120) to move along its own length direction.

7. The rolling inlet / outlet dual-purpose guide according to claim 6, characterized in that, The lower guide seat (110) has a sliding groove (114) formed on opposite sides of its bottom, and a lower drive hole formed at one end of its bottom; the upper guide seat (120) has an upper sliding groove (124) formed on opposite sides of its top, and an upper drive hole formed at one end of its top. The lower position adjustment component (160) includes: The lower fixed seat (161) is used to connect to the frame of the rolling mill that is used in conjunction with the rolling inlet and outlet dual-purpose guide; The lower support (162) is installed on the top of the lower fixed seat (161), and a lower slide rail (1621) matching the lower slide groove (114) is formed on one side of the top. The lower screw (163) is rotatably and movable along its own axis and is mounted on one end of the lower support (162), with a lower drive ring (1631) formed at one end; the lower drive ring (1631) is located in the lower drive hole; When the lower screw (163) rotates, it drives the lower guide seat (110) to move through the lower drive ring (1631) and the lower drive hole; The upper position adjustment component (170) includes: Upper fixed seat (171) is used to connect to the frame of the rolling mill that is used in conjunction with the rolling inlet and outlet dual-purpose guide; An upper support base (172) is installed at the bottom end of the upper fixed base (171), and an upper slide rail (1721) matching the upper slide groove (124) is formed on one side of the bottom end; The upper screw (173) is rotatably and movable along its own axis and is mounted on one end of the upper support (172), with an upper drive ring (1731) formed at one end; the upper drive ring (1731) is located in the upper drive hole; When the upper screw (173) rotates, it drives the upper guide seat (120) to move through the upper drive ring (1731) and the upper drive hole.

8. The rolling inlet / outlet dual-purpose guide according to claim 7, characterized in that, A lower limit moving groove (1611) is formed on one side of the top of the lower fixed seat (161); an upper limit moving groove (1711) is formed on one side of the bottom of the upper fixed seat (171). Also includes: The lower limit moving plate (181) has its bottom end able to abut against the lower limit moving groove (1611) and its top end able to abut against the lower sliding groove (114) to restrict the movement of the lower guide seat (110). The upper limit moving block (182) has its top end able to abut against the upper limit moving groove (1711) and its bottom end able to abut against the upper sliding groove (124) to restrict the movement of the upper guide seat (120).

9. The rolling inlet / outlet dual-purpose guide according to any one of claims 1 to 3, characterized in that, Also includes: The lifting ring (183) is detachably mounted on the top of the lower guide seat (110).

10. The rolling inlet / outlet dual-purpose guide according to any one of claims 1 to 3, characterized in that, Also includes: Multiple lower floating pads (1911) are all arc-shaped structures, evenly distributed along the circumference of the lower roller (130), and can be floatably installed on the outer wall of the lower roller (130); Multiple upper floating pads (1921) are all arc-shaped structures, evenly distributed along the circumference of the upper roller (140), and can be floatably installed on the outer wall of the upper roller (140).

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