Horizontal quenching integrated device for inner and outer surfaces of roller sleeve of large wide and thick plate supporting roller

Abstract

The invention discloses a horizontal quenching integrated device for the inner and outer surfaces of a roller sleeve of a large wide and thick plate supporting roller, and belongs to the technical field of large supporting rollers. The device comprises a horizontal supporting assembly, an inner surface cooling system, a rotary driving assembly and a separation assembly, wherein the horizontal supporting assembly comprises a lower load-bearing supporting frame and an upper supporting frame; the inner surface cooling system comprises a left hollow shaft and a right hollow shaft which are connected in a screwed mode through internal threads and external threads, the left hollow shaft and the right hollow shaft penetrate through an inner hole of the roller sleeve and are each provided with a threaded hole distributed in a spiral line shape, and high-pressure air nozzles are installed in the threaded holes. The rotary driving assembly comprises a gear motor, a rotary pinion and a rotary bull gear, the gear motor is in transmission connection with the rotary pinion, the rotary pinion is meshed with the rotary bull gear, and the inner side surface of the rotary bull gear is in compression connection with the side surface of the roller sleeve; the separating assembly is used for separating the inner surface and the outer surface of the roller sleeve, the outer surface of the roller sleeve is located in the quenching oil bath, and the inner surface of the roller sleeve forms an independent closed space.

Description

Technical Field

[0001] The invention belongs to the technical field of large-scale support rollers, and in particular relates to a horizontal quenching integrated device for the inner and outer surfaces of a roller sleeve of a large-scale wide and thick plate support roller. Background Art

[0002] As an important equipment in modern industry, the thick plate rolling mill produces thick plate products that are widely used in key fields such as national defense, military industry, and energy equipment. As the core component of the thick plate rolling mill, the manufacturing quality of the support roller directly affects the performance and service life of the rolling mill. At present, large-scale thick plate support rollers mostly adopt a combined structure of roller sleeves and roller shafts, among which the manufacturing process of the roller sleeves is particularly critical. The traditional roller sleeve heat treatment process has obvious defects: overall oil quenching will result in the same hardness on the inner and outer surfaces, and the hardness of the inner hole is too high, and subsequent separate tempering treatment is required, which not only prolongs the process flow, but also increases energy consumption and equipment investment. What's more serious is that this process cannot accurately control the hardness gradient of the inner and outer surfaces, which easily causes the micro-wear of the inner surface of the roller sleeve and the mating surface of the roller shaft to increase, affecting the overall performance and service life of the support roller.

[0003] Existing horizontal quenching equipment generally suffers from a single function, failing to achieve simultaneous yet independent cooling control of the inner and outer surfaces of the roller sleeves. This makes it difficult to meet the differentiated hardness requirements of large, thick plate support rollers. Furthermore, conventional equipment also has shortcomings in controlling quenching uniformity, particularly for roller sleeves exceeding 5 meters in length, where uniform cooling of the inner surface is difficult to ensure. These issues severely hinder the quality improvement and cost control of large, thick plate support rollers. Addressing these issues, existing technology urgently needs improvement. Summary of the Invention

[0004] The present invention provides a horizontal quenching integrated device for the inner and outer surfaces of a large wide and thick plate support roller sleeve, which has the advantages of achieving differentiated hardness control of the inner and outer surfaces of the roller sleeve, shortening the process flow, and improving cooling uniformity.

[0005] The present invention provides a horizontal quenching integrated device for the inner and outer surfaces of a large-scale wide and thick plate support roller sleeve, which adopts the following technical solutions: The large-scale wide and thick plate support roller sleeve inner and outer surface horizontal quenching integrated device comprises: A horizontal support assembly, comprising a lower load-bearing support frame and an upper support frame detachably connected to the lower load-bearing support frame, both of which have a half hole for carrying a hollow shaft; An inner surface cooling system, comprising a left hollow shaft and a right hollow shaft screwed together by internal and external threads, the left hollow shaft and the right hollow shaft passing through the inner hole of the roller sleeve whose axis is horizontally placed, and both of which are provided with a high-pressure cooling air inlet chamber and a cooling air outlet chamber, and the left hollow shaft and the right hollow shaft are provided with threaded holes distributed along a spiral line, and high-pressure air nozzles are installed in the threaded holes; A rotary drive assembly, comprising a reduction motor, a rotating pinion and a rotating gear. The reduction motor is disposed on the top of the upper support frame, the reduction motor is in transmission connection with the rotating pinion, the rotating pinion is meshed with the rotating gear, the rotating gear is respectively sleeved on the left hollow shaft and the right hollow shaft, the inner side of the rotating gear is pressed and connected with the side of the roller sleeve, and is used to drive the roller sleeve to rotate in the quenching oil pool; A separation component is used to separate the inner and outer surfaces of the roller sleeve, so that the outer surface of the roller sleeve is in the quenching oil pool and the inner surface of the roller sleeve forms an independent closed space.

[0006] Preferably, the partition assembly includes an internal thread locking ring, an inner sealing ring and an outer sealing ring, the outer sealing ring is arranged between the rotating large gear and the left hollow shaft and the right hollow shaft, and the internal thread locking ring and the inner sealing ring are arranged between the outer sealing ring and the rotating large gear.

[0007] Preferably, the left hollow shaft and the right hollow shaft are connected to the rotating large gear through double-row tapered roller bearings, and do not rotate with the roller sleeve.

[0008] Preferably, the high-pressure air nozzle is a solid conical nozzle, the included angle between the axes of two adjacent high-pressure air nozzles is 60°, and they are symmetrically distributed about the axis of the left hollow shaft or the right hollow shaft.

[0009] Preferably, the high-pressure air nozzle adopts a variable height design, wherein the high-pressure air nozzle in the middle position has the largest height and gradually becomes smaller towards both sides.

[0010] Preferably, the high-pressure cooling air inlet chambers of the left hollow shaft and the right hollow shaft are connected to the high-pressure cooling air access pipe through a one-way valve and a sealing gasket.

[0011] Preferably, the high-pressure air nozzle is connected to the threaded hole by internal and external threads, and the distance between the high-pressure air nozzle and the inner surface of the roller sleeve is controlled by adjusting the screw-in depth. The distance in the middle is the smallest and gradually increases towards both sides.

[0012] Preferably, the upper support frame is provided with an exhaust hole, and the lower load-bearing support frame is provided with an annular exhaust groove, and the exhaust hole is connected to the annular exhaust groove.

[0013] Preferably, an oil fence is provided on the upper support frame to prevent quenching oil from splashing into the reduction motor; the reduction motor is connected to the rotating pinion through a flat key and is axially fixed by a shaft end retaining ring and a countersunk screw.

[0014] Preferably, the high-pressure cooling air cavities of the left hollow shaft and the right hollow shaft are independent of each other and do not communicate with each other.

[0015] Beneficial effects of the present invention: (1) Differentiated quenching of inner and outer surfaces is achieved, and hardness parameters are precisely controlled: The present invention separates the inner and outer surfaces of the roller sleeve, and the inner and outer surfaces of the roller sleeve can be quenched simultaneously using different media. The outer surface of the roller sleeve is immersed in a quenching oil pool for cooling and quenching, and the inner surface of the roller sleeve is cooled by high-pressure cooling air. In addition, the cooling speed and cooling temperature of the inner surface of the roller sleeve can be controlled separately, which can adapt to different hardness requirements of the inner surface of the roller sleeve.

[0016] (2) Ensure quenching uniformity and improve the quality stability of the roller sleeve: In the present invention, the inner and outer surfaces of the roller sleeve are separated during quenching, and the rotating large gear drives the roller sleeve to rotate in the oil pool, while the left and right hollow shafts do not rotate, which can ensure that the outer surface of the roller sleeve is evenly cooled in the oil pool and its inner surface is sprayed with high-pressure cooling air; the outer surface of the roller sleeve is evenly contacted with the quenching oil, ensuring the uniformity of the hardness of the outer surface and the consistency of the depth of the hardened layer, and significantly improving its wear resistance; the inner surface adopts a spirally distributed rotating nozzle design, and by setting the spiral pitch, the nozzle spray angle and the tapered sleeve rotating device, the high-pressure cooling air evenly covers the inner surface to avoid cooling "dead zones"; the adjacent nozzle axes are symmetrically distributed at an angle of 60° to prevent airflow interference, and the inner surface can be fully cooled by rotating 180°, ensuring the hardness and hardness uniformity of the inner surface.

[0017] (3) Optimize the cooling system and improve the quenching efficiency: The left and right hollow shafts are split structures with internal and external thread connections. The high-pressure cooling air cavities in the middle of the hollow shafts are not interconnected, which can avoid insufficient cooling pressure of the nozzle in the middle part caused by the excessive length of the roller sleeve; the left and right hollow shafts are designed with independent high-pressure cooling air inlet and outlet cavities, so that the high-pressure cooling air in the closed space of the inner hole is in a flowing state, avoiding local overheating and improving the cooling efficiency; the inner and outer surfaces of the roller sleeve are quenched with dual media at the same time, which greatly shortens the processing time and reduces equipment investment and energy consumption.

[0018] (4) Adapt to various sizes and enhance the versatility of the equipment: The mounting hole of the high-pressure air nozzle on the hollow shaft is a threaded hole. The nozzle height and axial position can be adjusted according to the actual length and diameter of the roller sleeve. In addition, the nozzle length adopts a variable height design with a large height in the middle and gradually decreasing heights on both sides, which facilitates the flow of compressed air to the outlets on both sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] For ease of explanation, the present invention is described in detail with reference to the following specific implementations and accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 for Figure 1 Middle AA section view; Figure 3 for Figure 1 Middle BB, CC, DD, and EE cross-sectional views; Figure 4 for Figure 1 Partial view at center Ⅰ; Figure 5 It is a schematic diagram of the hollow shaft structure on the left; Figure 6 for Figure 5 Partial view at center II; Figure 7 for Figure 5 Partial view at center III; Figure 8 It is the left view of the rotating gear; Figure 9 It is a cross-sectional view of the rotating gear; Figure 10 is a cross-sectional view of the lower load-bearing support frame; Figure 11 It is the main view of the upper support frame; Figure 12 is a cross-sectional view of the upper support frame; Figure 13 is a cross-sectional view of the outer sealing ring; Figure 14 This is the left side view of the outer sealing ring.

[0021] In the picture: 1-Lower load-bearing support frame; 2-Left hollow shaft; 3-One-way valve; 4-Sealing gasket; 5-High-pressure cooling air inlet pipe; 6-Upper support frame; 7-Oil fence; 8-Reduction motor; 9-Rotating small gear; 10-Flat key; 11-Shaft end retaining ring; 12-Countersunk screw; 13-Internal thread locking ring; 14-Inner sealing ring; 15-Outer sealing ring; 16-Rotating large gear; 17-Double row tapered roller bearing; 18-High-pressure air nozzle; 19-Right hollow shaft; 20-Roller sleeve 20; 21-Quenching oil pool. DETAILED DESCRIPTION

[0022] The following are specific embodiments of the present invention, which, in conjunction with the accompanying drawings, further describe the technical solutions of the present invention. However, the present invention is not limited to these embodiments. In the following description, specific details such as specific configurations and components are provided only to facilitate a comprehensive understanding of the embodiments of the present invention. Therefore, it should be clear to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present invention. In addition, for the sake of clarity and brevity, descriptions of known functions and structures have been omitted.

[0023] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

[0024] In existing technology, the heat treatment of the backup roll sleeves 20 in thick plate mills typically utilizes a monolithic oil quenching process. After quenching, the hardness of the inner and outer surfaces is uniform, requiring secondary tempering to reduce the inner bore hardness. This traditional process is complex, requires significant equipment investment, and wastes energy. Furthermore, the inability to independently control the cooling rates of the inner and outer surfaces results in a hardness difference that is difficult to meet operational requirements. Furthermore, the stationary cooling of the roll sleeves 20 in the quenching oil pool 21 is prone to localized overcooling or uneven cooling, affecting hardness uniformity.

[0025] To address this issue, existing technology fails to isolate the cooling medium between the inner and outer surfaces of the roller sleeve 20, resulting in simultaneous cooling. Analysis revealed that if the inner and outer surfaces could be treated separately—the outer surface undergoes oil quenching while the inner surface uses a separate cooling medium—then independent temperature control of both could be achieved. Furthermore, considering the large size of the roller sleeve 20 and the need for horizontal quenching, a support structure adaptable to different specifications was required. To address the issue of dynamic cooling of the inner surface, a rotary spray solution was proposed, using spirally distributed nozzles combined with a rotating motion to achieve uniform coverage.

[0026] Therefore, this application proposes a horizontal quenching integrated device for the inner and outer surfaces of the roller sleeve 20 of a large-scale wide and thick plate support roller, such as Figures 1-14As shown, the device includes a horizontal support assembly, an inner surface cooling system, a rotary drive assembly, and a partition assembly. The horizontal support assembly comprises a lower load-bearing support frame 1 and an upper support frame 6 detachably connected to the lower load-bearing support frame 1, both of which have half-holes for supporting hollow shafts. The inner surface cooling system includes a left hollow shaft 2 and a right hollow shaft 19, which are screwed together by internal and external threads. The left hollow shaft 2 and the right hollow shaft 19 pass through the inner bore of a horizontally positioned roller sleeve 20, and both are internally provided with a high-pressure cooling air inlet chamber and a cooling air outlet chamber. The left hollow shaft 2 and the right hollow shaft 19 are both provided with threaded holes distributed along a spiral line, and high-pressure air nozzles 18 are installed in the threaded holes. The rotary drive assembly includes a reduction motor 8, a rotating pinion 9, and a rotating gear 16. The reduction motor 8 is arranged on the top of the upper support frame 6. The reduction motor 8 is connected to the rotating pinion 9 in a transmission manner. The rotating pinion 9 is meshed with the rotating gear 16. The rotating gear 16 is respectively sleeved on the left hollow shaft 2 and the right hollow shaft 19. The inner side of the rotating gear 16 is tightly connected to the side of the roller sleeve 20, which is used to drive the roller sleeve 20 to rotate in the quenching oil pool 21. The separation assembly is used to separate the inner and outer surfaces of the roller sleeve 20, so that the outer surface of the roller sleeve 20 is in the quenching oil pool 21, and the inner surface of the roller sleeve 20 forms an independent closed space.

[0027] Specifically, the roller sleeve 20 is placed horizontally in the half hole of the support assembly, and the left hollow shaft 2 and the right hollow shaft 19 pass through the inner hole of the roller sleeve 20 and are connected to form a cooling channel. High-pressure air enters from the inlet chamber and is sprayed onto the inner surface through the spirally distributed high-pressure air nozzles 18. The exhaust gas is discharged from the outlet chamber. The reduction motor 8 drives the rotating small gear 9 to drive the rotating large gear 16 to rotate. The rotating large gear 16 contacts the end face of the roller sleeve 20 to transmit torque, so that the roller sleeve 20 rotates at a uniform speed in the oil pool. The separator assembly seals both ends of the roller sleeve 20, so that the outer surface is completely immersed in quenching oil, and the inner surface forms a closed space for air cooling. The high-pressure air nozzles 18 are distributed along the spiral line, forming dynamic coverage during the rotation of the roller sleeve 20 to avoid local overcooling caused by fixed injection.

[0028] Through the above-mentioned technical solution, this application achieves independent control of the cooling rates of the inner and outer surfaces of the roller sleeve 20. The outer surface achieves high hardness through oil cooling, while the inner surface maintains a lower hardness through air cooling, meeting the required hardness difference between the inner and outer surfaces. The dynamically rotating high-pressure air nozzles 18, combined with a spiral distribution design, eliminate blind spots in the inner surface cooling and improve hardness uniformity. The removable support structure simplifies equipment adjustment and adapts to the quenching requirements of roller sleeves 20 of different sizes. This reduces the overall process steps and significantly reduces energy consumption and equipment investment.

[0029] The present application further proposes that the separation assembly includes an internal thread locking ring 13, an inner sealing ring 14 and an outer sealing ring 15. The outer sealing ring 15 is arranged between the rotating large gear 16 and the left hollow shaft 2 and the right hollow shaft 19. The internal thread locking ring 13 and the inner sealing ring 14 are arranged between the outer sealing ring 15 and the rotating large gear 16.

[0030] Specifically, the outer sealing ring 15 is positioned between the rotating gear 16 and the contact surface of the hollow shaft, directly bearing the oil pressure of the quenching oil pool 21 and achieving dynamic sealing through a lip-shaped structure. The internal threaded locking ring 13 is screwed into the end of the hollow shaft via a threaded connection, pressing the inner sealing ring 14 against the end face of the rotating gear 16, forming a second sealing line of defense. When the rotating gear 16 drives the roller sleeve 20 to rotate, the lip-shaped structure of the outer sealing ring 15 follows and adheres to the surface of the hollow shaft. Under the pressure of the internal threaded locking ring 13, the inner sealing ring 14 maintains close contact with the end face of the rotating gear 16. This double sealing structure effectively blocks oil from seeping into the enclosed space on the inner surface of the roller sleeve 20 along the axial gap.

[0031] The present application further proposes that the left hollow shaft 2 and the right hollow shaft 19 are connected to the rotating gear 16 via double-row tapered roller bearings 17 , and do not rotate with the roller sleeve 20 .

[0032] Specifically, the inner ring of the double-row tapered roller bearing 17 is secured to the hollow shaft with an interference fit, while the outer ring is matingly connected to the mounting hole of the rotating gearwheel 16. When the reduction motor 8 drives the rotating pinion 9 to rotate the rotating gearwheel 16 around the hollow shaft, the outer ring of the double-row tapered roller bearing 17 rotates synchronously with the rotating gearwheel 16, while the inner ring of the double-row tapered roller bearing 17 and the hollow shaft remain stationary. The two rows of tapered rollers transmit rotational torque through rolling friction, while the contact angle of the conical surface decomposes the axial load, allowing the hollow shaft to maintain axial positioning despite the axial thrust generated by the rotation of the roller sleeve 20. This structure prevents the injection direction of the high-pressure air nozzle from shifting due to the rotation of the hollow shaft and prevents wear of the sealing structure of the air cavity pipeline inside the hollow shaft due to rotation.

[0033] The present application further proposes that the high-pressure air nozzle 18 is a solid conical nozzle, the axis angle between two adjacent high-pressure air nozzles 18 is 60°, and they are symmetrically distributed about the axis of the left hollow shaft 2 or the right hollow shaft 19.

[0034] Specifically, the high-pressure air nozzles 18 are distributed along a spiral line on the surface of the hollow shaft. When the roller sleeve 20 rotates, the conical airflow ejected by the high-pressure air nozzles 18 forms a continuously covered cooling area on the inner surface of the roller sleeve 20. Adjacent high-pressure air nozzles 18 are arranged at a 60° angle, so that a new nozzle covers the injection gap of the previous nozzle every 60° of rotation, thereby eliminating local insufficient cooling. The symmetrically distributed nozzles form complementary cooling paths during the rotation of the roller sleeve 20, ensuring that each circumferential point on the inner surface receives the same frequency of cooling. The solid structure of the conical nozzle causes the airflow to diffuse in a continuous conical shape, avoiding the annular cooling gap produced by traditional hollow nozzles and achieving blind spot coverage.

[0035] The present application further proposes that the high-pressure air nozzle 18 adopts a variable height design, where the high-pressure air nozzle 18 in the middle position has the largest height and gradually becomes smaller towards both sides.

[0036] Specifically, during the rotation of the roller sleeve 20, the cooling medium distribution in the central region is weak due to centrifugal force. At this time, the high-pressure air nozzles 18 at the highest height shorten their distance from the inner surface of the roller sleeve 20, thereby enhancing the impact of the airflow in this area. The design of the high-pressure air nozzles 18 with decreasing heights on both sides adjusts the airflow coverage angle according to the changing curvature of the roller sleeve 20's inner surface, avoiding the overlap of airflow in the edge areas caused by the equally spaced high-pressure air nozzles 18. The rotational motion causes the spirally distributed nozzle group to form a dynamic covering layer, which compensates for cooling differences at different axial positions of the roller sleeve 20 through height gradient changes, ultimately achieving balanced cooling rates in the circumferential and axial directions.

[0037] The present application further proposes that the high-pressure cooling air inlet chambers of the left hollow shaft 2 and the right hollow shaft 19 are connected to the high-pressure cooling air access pipe 5 through a one-way valve 3 and a sealing gasket 4.

[0038] The present application further proposes that the high-pressure air nozzle 18 is connected to the threaded hole with internal and external threads, and the distance between the high-pressure air nozzle 18 and the inner surface of the roller sleeve 20 is controlled by adjusting the screw-in depth. The distance in the middle position is the smallest and gradually increases towards both sides.

[0039] Specifically, during the quenching process of the inner surface of the roller sleeve 20, the cooling rate in the central region is prone to attenuation due to heat conduction. By inserting the high-pressure air nozzles 18 in the center position the deepest, bringing them closest to the inner surface, the airflow intensity in this region is enhanced. By gradually decreasing the insertion depth and increasing the nozzle spacing on either side, the cooling intensity gradient decreases. This asymmetric distribution compensates for axial temperature field variations, ensuring consistent cooling rates across the inner surface. Because the nozzle spacing is adjustable, when processing roller sleeves 20 of varying diameters, simply resetting the insertion depth is sufficient to match the new quenching parameters, without having to replace the nozzle assembly.

[0040] The present application further proposes that the upper support frame 6 be provided with a vent hole, and the lower load-bearing support frame 1 be provided with an annular vent groove, with the vent hole communicating with the annular vent groove. Specifically, the vent hole and the annular vent groove form a continuous vent path through an internal passage. During the quenching process, gases generated by temperature changes within the enclosed space on the inner surface of the roller sleeve 20 are evenly collected through the annular vent groove and then discharged to the external environment through the vent hole.

[0041] The present application further proposes that an oil retaining fence 7 is provided on the upper support frame 6 to prevent quenching oil from splashing into the reduction motor 8; the reduction motor 8 is connected to the rotating pinion 9 through a flat key 10 and is axially fixed by a shaft end retaining ring 11 and a countersunk screw 12.

[0042] Specifically, the oil retaining fence 7 forms a physical barrier around the outer periphery of the reduction motor 8. During the quenching process, any oil splashing onto the surface of the oil retaining fence 7 is diverted into the oil sump, preventing it from contacting the motor housing or seeping into the internal electrical components. A shaft end retaining ring 11 is installed on the side of the rotating pinion 9 facing away from the motor to limit axial movement of the gear. A countersunk screw 12 passes through the shaft end retaining ring 11 and screws into a threaded hole on the end face of the motor output shaft, forming a dual axial fixation structure to prevent axial movement of the rotating pinion 9 due to inertia or vibration during high-speed rotation.

[0043] The present application further proposes that the high-pressure cooling air cavities of the left hollow shaft 2 and the right hollow shaft 19 are independent of each other and do not communicate with each other.

[0044] Specifically, the left hollow shaft 2 and the right hollow shaft 19 each form a closed cooling air circulation path, and through independent control of the sub-cavities, differentiated cooling of different areas on the inner surface of the roller sleeve 20 is achieved. During the quenching process, the air cavities on both sides can independently adjust the inlet pressure and flow parameters. Since the air cavities are completely isolated, the cooling airflows on both sides will not form turbulent interference in the cavity, thereby ensuring that the cooling speed of each axial area of ​​the roller sleeve 20 strictly corresponds to the preset process parameters. Through the above technical solution, the present application realizes the axial partitioning control of the cooling medium on the inner surface of the roller sleeve 20, avoids the mutual interference phenomenon caused by the cooling medium during long-distance flow, and enables the cooling speed of different areas on the inner surface of the roller sleeve 20 to be independently adjusted according to the heat treatment requirements, thereby accurately controlling the axial distribution uniformity of the inner surface hardness after quenching.

[0045] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, tasks, devices, components and / or combinations thereof.

[0046] In the description of this application, it should be understood that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on this application.

[0047] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

Claims

1. A horizontal quenching device for the inner and outer surfaces of the sleeve of a large-scale thick plate support roller, characterized in that: include: A horizontal support assembly, comprising a lower load-bearing support frame (1) and an upper support frame (6) detachably connected to the lower load-bearing support frame (1), both of which have a half hole for supporting a hollow shaft; An inner surface cooling system, the inner surface cooling system comprising a left hollow shaft (2) and a right hollow shaft (19) connected by screwing of internal and external threads, the left hollow shaft (2) and the right hollow shaft (19) passing through the inner hole of a roller sleeve (20) whose axis is horizontally placed, and both are provided with a high-pressure cooling air inlet cavity and a cooling air outlet cavity, the left hollow shaft (2) and the right hollow shaft (19) are provided with threaded holes distributed along a spiral line, and high-pressure air nozzles (18) are installed in the threaded holes; A rotary drive assembly, the rotary drive assembly comprising a reduction motor (8), a rotating pinion (9) and a rotating gear (16), the reduction motor (8) being arranged on the top of the upper support frame (6), the reduction motor (8) being in transmission connection with the rotating pinion (9), the rotating pinion (9) being meshed with the rotating gear (16), the rotating gear (16) being respectively sleeved on the left hollow shaft (2) and the right hollow shaft (19), the inner side surface of the rotating gear (16) being pressed and connected with the side surface of the roller sleeve (20), and being used for driving the roller sleeve (20) to rotate in the quenching oil pool (21); A separation component is provided, wherein the separation component is used to separate the inner and outer surfaces of the roller sleeve (20), so that the outer surface of the roller sleeve (20) is located in the quenching oil pool (21), and the inner surface of the roller sleeve (20) forms an independent closed space.

2. The horizontal quenching integrated device for the inner and outer surfaces of the sleeve of a large-scale wide and thick plate support roller according to claim 1 is characterized in that: The separation assembly comprises an internal thread locking ring (13), an inner sealing ring (14) and an outer sealing ring (15), wherein the outer sealing ring (15) is arranged between the rotating gear (16) and the left hollow shaft (2) and the right hollow shaft (19), and the internal thread locking ring (13) and the inner sealing ring (14) are arranged between the outer sealing ring (15) and the rotating gear (16).

3. The horizontal quenching integrated device for the inner and outer surfaces of the roller sleeve of a large-scale wide and thick plate support roller according to claim 1 is characterized in that: The left hollow shaft (2) and the right hollow shaft (19) are connected to the rotating gear (16) via double-row tapered roller bearings (17), and do not rotate with the roller sleeve (20).

4. The horizontal quenching integrated device for the inner and outer surfaces of the sleeve of a large-scale wide and thick plate support roller according to claim 1 is characterized in that: The high-pressure air nozzle (18) is a solid conical nozzle, the axis angle between two adjacent high-pressure air nozzles (18) is 60°, and they are symmetrically distributed about the axis of the left hollow shaft (2) or the right hollow shaft (19).

5. The horizontal quenching integrated device for the inner and outer surfaces of the roller sleeve of a large-scale wide and thick plate support roller according to claim 1 is characterized in that: The high-pressure air nozzle (18) adopts a variable height design, wherein the high-pressure air nozzle (18) in the middle position has the largest height and gradually becomes smaller towards both sides.

6. The horizontal quenching integrated device for the inner and outer surfaces of the sleeve of a large-scale wide and thick plate support roller according to claim 1 is characterized in that: The high-pressure cooling air inlet chambers of the left hollow shaft (2) and the right hollow shaft (19) are connected to the high-pressure cooling air inlet pipe (5) through a one-way valve (3) and a sealing gasket (4).

7. The horizontal quenching integrated device for the inner and outer surfaces of the roller sleeve of a large-scale wide and thick plate support roller according to claim 1 is characterized in that: The high-pressure air nozzle (18) is connected to the threaded hole by internal and external threads. The distance between the high-pressure air nozzle (18) and the inner surface of the roller sleeve (20) is controlled by adjusting the screw-in depth. The distance is the smallest in the middle and gradually increases towards both sides.

8. The horizontal quenching integrated device for the inner and outer surfaces of the sleeve of a large-scale wide and thick plate support roller according to claim 1 is characterized in that: The upper support frame (6) is provided with an exhaust hole, and the lower load-bearing support frame (1) is provided with an annular exhaust groove, and the exhaust hole is communicated with the annular exhaust groove.

9. The horizontal quenching integrated device for the inner and outer surfaces of the roller sleeve of a large-scale wide and thick plate support roller according to claim 1 is characterized in that: The upper support frame (6) is provided with an oil retaining fence (7) for preventing quenching oil from splashing into the reduction motor (8); the reduction motor (8) is connected to the rotating pinion (9) via a flat key (10) and is axially fixed via a shaft end retaining ring (11) and a countersunk screw (12).

10. The horizontal quenching integrated device for the inner and outer surfaces of the roller sleeve of a large-scale wide and thick plate support roller according to claim 1 is characterized in that: The high-pressure cooling air cavities of the left hollow shaft (2) and the right hollow shaft (19) are independent of each other and do not communicate with each other.

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