A water quenching machine for roll production

Abstract

The present invention provides a water quenching machine for roll production, which relates to the technical field of water quenching machines and includes an inductive heating coil, a cooling water ring, and a driving assembly arranged on a base; an upper clamping mechanism and a lower clamping mechanism are arranged below the driving assembly, a moving table is slidably arranged on the base, and a linear driver is arranged on the base; the lower clamping mechanism includes a first receiving table, a first fixed table, a first inclined track, and a lower top block; the first receiving table moves downward and drives a plurality of lower top blocks to approach each other to clamp the lower end of the roll. When clamping the roll in the present invention, by moving the lower moving table, the moving table is deviated from directly below the upper clamping mechanism, reducing the interference between the lifting cable of the lifting mechanism and the upper clamping mechanism, which is beneficial to keeping the lifting cable concentric with the center of the installation position. At the same time, the lower clamping mechanism and the upper clamping mechanism respectively clamp and center the two ends of the roll, reducing the number of adjustments required during the installation process of the roll and improving the installation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of water quenching machines, and more particularly to a water quenching machine for roll production. Background Art

[0002] A roll is a component on a rolling mill that bears the rolling force and reduces the thickness of the rolled material. The roll contacts the rolled material and applies pressure during the rolling process, causing the rolled material to undergo plastic deformation, thereby producing products of various shapes and sizes. The manufacturing process of rolls includes multiple links such as casting, forging, and heat treatment. Among them, the heat treatment of rolls is usually carried out using a water quenching machine to rapidly cool the rolls heated to a certain temperature, preventing the transformation of austenite to martensite structure in a rapid cooling manner, thereby improving mechanical properties such as the hardness of the required thickness of the working layer of the roll.

[0003] The vertical water quenching machine installs the roll on the water quenching machine by clamping or pressing at both ends. The water quenching machine is provided with an inductive heating coil and a cooling water ring, which are concentrically sleeved on the roll, and the three are concentric. During water quenching, a motor is provided at the clamping mechanism at the upper part. The motor drives the clamping mechanism and the roll to rotate. The heating coil and the cooling water ring are integrally driven by a lead screw slider and gradually move upward from the bottom of the roll. The cooling water ring rapidly cools the heated area of the roll to achieve water quenching. For example, the patent document with the publication number CN113699358B discloses a roll processing water quenching device with heat recovery and its use method. A water quenching tank is provided on the workbench of the water quenching device. A placement plate is rotatably connected in the water quenching tank, and a roll is placed on the placement plate. A plurality of annular tubes are fixedly connected in the water quenching tank, and a plurality of electromagnetic spray guns are arranged annularly and equidistantly on the inner walls of the plurality of annular tubes with the placement plate as the center.

[0004] In the above water quenching device, the motor drives the placement plate to rotate, and then drives the roll to rotate, so that the electromagnetic spray gun sprays the surface of the roll. Since the installation position of the roll on the water quenching machine is fixed, and the roll is heavy, usually the roll is installed on the water quenching machine by hoisting. To accurately install the center position of the roll, it is necessary to keep the hoisting cable concentric with the center of the installation position. However, the clamping mechanism at the upper part of the water quenching machine will interfere with the hoisting cable, and the roll needs to be adjusted multiple times to be installed in place so that the inductive heating coil and the cooling water ring are concentric with the roll, thereby smoothly achieving water quenching. Summary of the Invention

[0005] In view of this, the present invention provides a water quenching machine for roll production, which solves the technical problem that when installing a roll on a vertical water quenching machine, the hoisting device interferes with the clamping mechanism at the top of the water quenching machine, and the roll needs to be adjusted multiple times.

[0006] To solve the above technical problems, the present invention provides a water quenching machine for roll production, which includes an induction heating coil and a cooling water ring arranged on a base, and a driving assembly for driving a roll on the base to rotate; an upper clamping mechanism and a lower clamping mechanism capable of clamping both ends of the roll are arranged below the driving assembly; a moving table is slidably arranged on the base, and a linear driver for driving the moving table to move is arranged on the base;

[0007] The lower clamping mechanism includes a first receiving table rotatably connected to the moving table and capable of moving up and down, a first fixed table elastically arranged below the first receiving table, a plurality of first inclined tracks obliquely arranged on the first fixed table, and lower top blocks slidably arranged on the first inclined tracks; the first receiving table is slidably connected to the lower top blocks, and the first receiving table moves downwards and drives the plurality of lower top blocks to approach each other to clamp the lower end of the roll;

[0008] A lower rotating shaft penetrating the first fixed table is fixedly connected below the first receiving table, a positioning through hole capable of allowing the lower rotating shaft to penetrate is formed on the moving table, a positioning cavity capable of being collinear with the axis of the positioning through hole is arranged on the base, and a cylinder capable of abutting against the lower rotating shaft is arranged in the positioning cavity.

[0009] By adopting the above technical solution, the linear driver drives the moving table to move, so that the moving table extends out directly below the upper clamping mechanism. The hoisting mechanism is used to transfer the roll onto the first receiving table, reducing the interference between the hoisting cable and the driving assembly. The first receiving table moves downwards, the distance between the first receiving table and the first fixed table decreases, and the lower top blocks on the first inclined tracks move towards the direction close to the axis of the first receiving table. The plurality of lower top blocks approach each other and clamp the lower end of the roll, realizing the centering of the roll; the linear driver drives the moving table to retreat, so that the moving table resets. The axis of the positioning through hole and the axis of the positioning cavity are collinear, and the lower rotating shaft penetrates the positioning through hole and falls into the positioning cavity, realizing the positioning of the roll. The upper clamping mechanism clamps the upper part of the roll, the driving assembly drives the roll to rotate, the cooling water ring is located below the induction heating coil, and the cooling water in the cooling water ring is sprayed to the induction heating coil to perform water quenching on the roll.

[0010] Preferably, a receiving frame is slidably arranged on one side of the moving table, a top rod is elastically connected to the receiving frame, a top wheel capable of abutting against the side wall of the roll is rotatably connected to one end of the top rod, the axis of the top wheel is parallel to the axis of the roll, an elastic pin for positioning the top rod is arranged on the receiving frame, and a receiving frame hydraulic cylinder for driving the receiving frame to slide towards or away from the first receiving table is arranged on the moving table.

[0011] By adopting the above technical solution, the receiving frame hydraulic cylinder can drive the receiving frame to move, so that the top wheel abuts against the side wall of the roll, realizing the buffering of the roll during hoisting, reducing the phenomenon that it is not easy to position due to the inertial reciprocating swing when the roll arrives. After the roll arrives, the top rod is compressed, and the elastic pin locks the top rod, facilitating the stable downward fall of the roll.

[0012] Preferably, a ring-shaped lifting plate is rotatably connected below the first fixed platform. A lifting block is fixedly connected below the lifting plate. The positioning through hole is a stepped hole, and a sealing cavity into which the lifting block can extend is provided on the side wall of the positioning through hole. The sealing cavity is filled with hydraulic oil, and a hydraulic oil pipeline is connected between the sealing cavity and the bearing frame hydraulic cylinder.

[0013] By adopting the above technical solution, the roll is installed on the first bearing platform. After the linear driver drives the moving platform to reset, the lower rotating shaft passes through the positioning through hole and falls into the positioning cavity. While the lower rotating shaft descends, it drives the first fixed platform to descend. The first fixed platform drives the lifting plate and the lifting block to descend. The lifting block compresses the sealing cavity, so that the hydraulic oil in the sealing cavity enters the bearing frame hydraulic cylinder through the hydraulic oil pipeline. The bearing frame hydraulic cylinder drives the bearing frame to move away from the roll, thereby driving the top wheel away from the roll to make way for the up and down movement of the inductive heating coil and the cooling water ring.

[0014] Preferably, two guide plates that can penetrate the positioning through hole and extend into the positioning cavity are provided below the lifting plate. The cylinder has a piston, and a top head that can push the guide plate to move upward is provided on the upper end surface of the piston;

[0015] A limit nut is installed at the lower part of the first fixed platform. The limit nut is sleeved on the lower rotating shaft. A keyway is opened on the lower rotating shaft, and a key that cooperates with the keyway is provided on the limit nut.

[0016] By adopting the above technical solution, after water quenching is completed, air is introduced into the cylinder, and the top head of the piston pushes the guide plate to move upward to above the positioning cavity, so that the bottom end of the guide plate is located in the positioning through hole, which is convenient for the linear driver to drive the moving platform to move and realize the unloading of the roll. The connection between the limit nut and the lower rotating shaft is a key connection, which can realize the synchronous rotation of the lower rotating shaft and the first fixed platform. At the same time, the keyway can limit the lifting stroke of the lower rotating shaft so that the lower rotating shaft does not break away from the first fixed platform.

[0017] Preferably, two ejector rods are provided on the bearing frame. The ends of the two ejector rods are both installed on the connecting piece. Hooks are provided at both ends of the connecting piece on the side far away from the ejector rods. A protective belt that can protect the roll is detachably connected to the hooks, and the two top wheels are installed between the two hooks.

[0018] By adopting the above technical solution, the protective belt is arranged around the side wall of the roll, which is beneficial to improving the stability of the roll during movement.

[0019] Preferably, a side bracket is installed on one side of the base. The driving assembly includes a lifting plate slidably arranged on the side bracket and a driving motor installed on the lifting plate. A first lead screw lifting mechanism that can drive the lifting plate to lift is provided on the side bracket.

[0020] By adopting the above technical solution, the first lead screw lifting mechanism drives the lifting plate and the driving motor to lift, realizing the water quenching of rolls with different heights, and also facilitating the clamping and disassembly of the rolls.

[0021] Preferably, an upper clamping mechanism is provided below the lifting plate. The upper clamping mechanism includes a second fixed table fixedly connected to the output shaft of the driving motor, a second receiving table elastically connected below the second fixed table, a plurality of second inclined rails inclined below the second fixed table, and upper jacking blocks slidably arranged on the second inclined rails; the second receiving table is slidably connected to the upper jacking blocks, and when the second receiving table moves upward, it drives the plurality of upper jacking blocks to approach each other to clamp the upper end of the roll.

[0022] By adopting the above technical solution, after the lower part of the roll is positioned, the first lead screw lifting mechanism drives the lifting plate and the driving motor to move downward, the driving motor drives the second fixed table to move downward, the second fixed table drives the second receiving table to move downward, so that the upper end of the roll abuts against the lower end surface of the second receiving table. As the second fixed table continues to move downward, the distance between the second fixed table and the second receiving table decreases, and the upper jacking blocks on the second inclined rails move in the direction close to the axis of the second receiving table, and the plurality of upper jacking blocks approach each other and clamp the upper end of the roll, realizing the fixation of the roll.

[0023] Preferably, one side of the inductive heating coil and the cooling water ring are both fixedly installed on the fixing member. The fixing member is slidably connected in the telescopic box. An elastic member is connected between the telescopic box and the fixing member. A limit pin is fixed below the fixing member. A positioning rod is arranged on the moving table. A positioning hole into which the limit pin can be inserted is opened at the end of the positioning rod. A second lead screw lifting mechanism capable of driving the telescopic box to lift is provided on the side bracket.

[0024] By adopting the above technical solution, during the process of the linear actuator driving the moving table to move, the positioning rod drives the fixing member, the inductive heating coil and the cooling water ring to move synchronously, reducing the eccentricity phenomenon of the inductive heating coil and the cooling water ring relative to the roll, which is beneficial to improving the water quenching quality. During water quenching, the second lead screw lifting mechanism drives the telescopic box, the inductive heating coil and the cooling water ring to move upward in sequence, and water quenches the roll from bottom to top.

[0025] The beneficial effects of the above technical solutions of the present invention are as follows:

[0026] 1. When clamping the roll in the present invention, by moving the lower moving table to deviate from directly below the upper clamping mechanism, it is beneficial to reduce the interference between the hoisting cable and the upper clamping mechanism when the hoisting mechanism hoists the roll, and it is beneficial for the hoisting cable to maintain a vertical state, thereby being beneficial to keeping the hoisting cable concentric with the center of the installation position. At the same time, the lower clamping mechanism and the upper clamping mechanism respectively clamp the two ends of the roll and achieve centering, reducing the number of adjustments required during the installation process of the roll and improving the installation efficiency.

[0027] 2. A sealing cavity is provided below the mobile station, and the sealing cavity is filled with hydraulic oil, which is beneficial to the stable downward movement of the receiving table one with the roll. The top wheel abuts against the side wall of the roll, realizing the buffering of the roll during hoisting, reducing the phenomenon that the roll is not easy to be positioned due to inertial reciprocating swing when it reaches the position. The protective belt is arranged around the side wall of the roll, which is beneficial to improving the stability of the roll during movement.

[0028] 3. During the process of the linear driver driving the mobile station to move, the positioning rod drives the fixing piece, the inductive heating coil and the cooling water ring to move synchronously, reducing the eccentric phenomenon of the inductive heating coil and the cooling water ring relative to the roll, which is beneficial to improving the water quenching quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the water quenching machine for roll production of the present invention;

[0030] Figure 2 is Figure 1 an enlarged view of part A in

[0031] Figure 3 is Figure 1 an enlarged view of part B in

[0032] Figure 4 is a schematic structural diagram of the mobile station and the receiving frame of the present invention;

[0033] Figure 5 is a schematic structural diagram of the lower clamping mechanism of the present invention;

[0034] Figure 6 is a sectional view of the water quenching machine for roll production of the present invention;

[0035] Figure 7 is Figure 6 an enlarged view of part C in

[0036] Figure 8 is a sectional view of the mobile station and the receiving frame of the present invention;

[0037] Figure 9 is a partial structural schematic diagram of the base of the present invention.

[0038] In the figure: 1. Base; 11. Moving platform; 111. Positioning through hole; 112. Sealing cavity; 113. Boss; 12. Linear drive; 13. Positioning cavity; 131. Cylinder; 132. Piston; 133. Thrust head; 14. Side bracket; 15. Bearing bracket; 151. Thrust rod; 152. Connecting piece; 153. Second return spring; 154. Top wheel; 155. Elastic pin; 156. Hydraulic cylinder of bearing bracket; 157. Hook; 158. Hydraulic oil pipeline; 16. Slideway; 161. Limit groove; 17. Inductive heating coil; 18. Cooling water ring; 19. Fixing piece; 191. Telescopic box; 192. Elastic piece; 193. Limit pin; 194. Positioning rod; 195. Second lead screw lifting mechanism; 2. Lower clamping mechanism; 21. First bearing platform; 211. Lower rotating shaft; 212. First chute; 213. Keyway; 22. First fixing platform; 221. First return spring; 222. Limit nut; 223. Key; 23. First inclined track; 24. Lower top block; 25. Lifting plate; 251. Lifting block; 252. Guide plate; 3. Driving assembly; 31. Lifting plate; 32. Driving motor; 33. First lead screw lifting mechanism; 4. Upper clamping mechanism; 41. Second fixing platform; 411. Third return spring; 42. Second inclined track; 43. Second bearing platform; 431. Second chute; 432. Upper rotating shaft; 44. Upper top block; 5. Roll. Detailed implementation manners

[0039] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the Figures 1 - 9 accompanying drawings. Apparently, the described embodiments are only a part rather than all of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art shall fall within the scope of protection of the present invention.

[0040] Embodiment

[0041] This embodiment provides a water quenching machine for roll production, including a base 1 as shown in Figure 1 , a driving assembly 3 as shown in Figure 3 , a lower clamping mechanism 2 as shown in Figure 2 and an upper clamping mechanism 4 as shown in Figure 3 . The lower clamping mechanism 2 and the upper clamping mechanism 4 respectively clamp both ends of the roll 5, the driving assembly 3 drives the roll 5 to rotate, and an inductive heating coil 17 and a cooling water ring 18 are provided on the base 1 to achieve water quenching of the roll 5.

[0042] As shown in Figure 1 and Figure 4As shown, a moving table 11 is slidably provided on a base 1. A linear driver 12 for driving the moving table 11 to move is provided on the base 1. A lower clamping mechanism 2 capable of clamping the lower end of a roller 5 is provided on the moving table 11. The linear driver 12 is one of a hydraulic cylinder or a pneumatic cylinder.

[0043] As Figure 4 shown, the lower clamping mechanism 2 includes a first receiving table 21, a first fixing table 22, a first inclined track 23, and a lower top block 24.

[0044] As Figure 5 and Figure 7 shown, a positioning through hole 111 is formed on the moving table 11. The first receiving table 21 is located above the moving table 11. A lower rotating shaft 211 capable of passing through the positioning through hole 111 is fixedly installed below the first receiving table 21. Three first chutes 212 are formed on the first receiving table 21 in the radial direction.

[0045] As Figure 5 and Figure 7 shown, the first fixing table 22 is annular and arranged below the first receiving table 21. The lower rotating shaft 211 passes through the first fixing table 22. A first return spring 221 is provided between the first fixing table 22 and the first receiving table 21. The first return spring 221 is sleeved on the lower rotating shaft 211.

[0046] As Figure 5 and Figure 7 shown, a limit nut 222 is installed below the middle part of the first fixing table 22. The limit nut 222 is sleeved on the lower rotating shaft 211. A keyway 213 is formed on the lower rotating shaft 211. A key 223 matched with the keyway 213 is provided on the limit nut 222. The limit nut 222 and the lower rotating shaft 211 are in key connection, which can realize the synchronous rotation of the lower rotating shaft 211 and the first fixing table 22. At the same time, the keyway 213 can limit the lifting stroke of the lower rotating shaft 211 to prevent the lower rotating shaft 211 from disengaging from the first fixing table 22.

[0047] As Figure 5 and Figure 7 shown, three first inclined tracks 23 are provided and correspond to the three first chutes 212 one by one. One end of the first inclined track 23 is fixedly installed on the edge of the first fixing table 22, and the other end extends into the first chute 212. The first inclined track 23 is inclined from top to bottom towards the axis direction of the first fixing table 22.

[0048] As Figure 5 and Figure 7As shown, three lower ejector blocks 24 are also provided and correspond to the three inclined tracks 1-23 one by one. An inclined slot is provided below the lower ejector block 24, and the inclined track 1-23 is clamped in the inclined slot to realize the sliding connection between the lower ejector block 24 and the inclined track 1-23. Clamping blocks are provided on both sides of the lower ejector block 24, and clamping grooves cooperating with the clamping blocks are provided on both sides of the first chute 212 to realize the sliding connection between the lower ejector block 24 and the first chute 212. The downward movement of the first receiving platform 21 drives the three lower ejector blocks 24 to approach each other to clamp the lower end of the rolling mill roll 5.

[0049] As Figure 7 shown, a positioning cavity 13 collinear with the axis of the positioning through hole 111 is provided on the base 1, and a cylinder 131 capable of abutting against the lower rotating shaft 211 is provided in the positioning cavity 13.

[0050] As Figure 4 shown, the linear actuator 12 drives the moving platform 11 to move, so that the moving platform 11 extends directly below the upper clamping mechanism 4 as Figure 3 shown. The rolling mill roll 5 is transferred to the first receiving platform 21 by using a hoisting mechanism, reducing the interference between the hoisting cable and the drive assembly 3. As Figure 2 and Figure 5 shown, after the rolling mill roll 5 is transferred to the first receiving platform 21, the first receiving platform 21 moves downward, and the distance between the first receiving platform 21 and the first fixed platform 22 decreases. The lower ejector blocks 24 on the inclined track 1-23 move in the direction close to the axis of the first receiving platform 21, and the multiple lower ejector blocks 24 approach each other and clamp the lower end of the rolling mill roll 5 to realize the centering of the rolling mill roll 5. The linear actuator 12 drives the moving platform 11 to retreat to reset the moving platform 11. As Figure 7 shown, the axes of the positioning through hole 111 and the positioning cavity 13 are collinear, and the lower rotating shaft 211 passes through the positioning through hole 111 and falls into the positioning cavity 13 to realize the positioning of the rolling mill roll 5. As Figure 3 shown, the drive assembly 3 drives the rolling mill roll 5 to rotate. The cooling water ring 18 is located below the inductive heating coil 17, and the cooling water in the cooling water ring 18 is sprayed onto the inductive heating coil 17 to perform water quenching on the rolling mill roll 5.

[0051] As Figure 1 and Figure 4As shown, a side bracket 14 is installed on one side of the base 1, and a receiving bracket 15 is slidably provided on one side of the moving platform 11. The receiving bracket 15 is also slidably connected to the side bracket 14. Two ejector rods 151 are slidably connected to the receiving bracket 15. One ends of the two ejector rods 151 close to the moving platform 11 are both installed on a connecting member 152. A second return spring 153 is sleeved on the ejector rod 151. Two ends of the second return spring 153 are respectively connected to the receiving bracket 15 and the connecting member 152. The connecting member 152 is a plate-like structure. Two top wheels 154 that can abut against the side wall of the roller 5 are rotatably installed on the connecting member 152. The axis of the top wheel 154 is parallel to the axis of the roller 5. Limit holes are provided on both of the two ejector rods 151, and elastic pins 155 that can be inserted into the limit holes are provided on the receiving bracket 15. The two elastic pins 155 correspond to the two limit holes one by one to realize the positioning of the ejector rod 151.

[0052] As Figure 4 shown, a receiving bracket hydraulic cylinder 156 for driving the receiving bracket 15 to slide toward or away from one side of the first receiving table 21 is provided on the moving platform 11. The receiving bracket hydraulic cylinder 156 can drive the receiving bracket 15 to move, so that the top wheel 154 abuts against the side wall of the roller 5, realizing the buffering of the roller 5 during hoisting, reducing the phenomenon that it is not easy to position due to the inertial reciprocating swing when the roller 5 arrives. After the roller 5 arrives, the ejector rod 151 is compressed, and the elastic pin 155 locks the ejector rod 151, facilitating the stable downward fall of the roller 5.

[0053] As Figure 4 shown, hooks 157 are provided at both ends of the connecting member 152 on the side far from the ejector rod 151. A protective belt (not shown in the figure) that can protect the roller 5 is detachably connected to the hooks 157. The two hooks 157 are located outside the two top wheels 154, that is, the two top wheels 154 are installed between the two hooks 157. The protective belt is elastic and is arranged around the side wall of the roller 5, which is beneficial to improving the stability of the roller 5 during movement.

[0054] As Figure 7 and Figure 8 shown, a ring-shaped lifting disc 25 is rotatably connected below the first fixed table 22. Two lifting blocks 251 are fixedly connected below the lifting disc 25. The two lifting blocks 251 are respectively located on both sides of the lower rotating shaft 211. The positioning through hole 111 on the moving platform 11 is a stepped hole, and the inner diameter of the upper end face of the stepped hole is larger than the inner diameter of the lower end face. Two sealing cavities 112 are provided on the side wall of the stepped hole. When the lifting disc 25 drives the lifting blocks 251 to move downward, the lifting blocks 251 can extend into the sealing cavities 112. The sealing cavities 112 are filled with hydraulic oil, and a hydraulic oil pipeline 158 is connected between the sealing cavities 112 and the receiving bracket hydraulic cylinder 156.

[0055] As Figure 1 and Figure 4As shown, the roll 5 is installed on the first receiving table 21. After the linear driver 12 drives the moving table 11 to reset, as Figure 7 and Figure 8 shown, the lower rotating shaft 211 passes through the positioning through hole 111 and falls into the positioning cavity 13. While the lower rotating shaft 211 descends, it drives the first fixed table 22 to descend. The first fixed table 22 drives the lifting disc 25 and the lifting block 251 to descend. The lifting block 251 compresses the sealing cavity 112, so that the hydraulic oil in the sealing cavity 112 enters the receiving frame hydraulic cylinder 156 through the hydraulic oil pipeline 158. The receiving frame hydraulic cylinder 156 drives the receiving frame 15 to move away from the roll 5, thereby driving the top wheel 154 away from the roll 5, making way for the up and down movement of the inductive heating coil 17 and the cooling water ring 18.

[0056] As Figure 7 and Figure 8 shown, two guide plates 252 are provided below the lifting disc 25. The two guide plates 252 are located on both sides of the lower rotating shaft 211 and can pass through the positioning through hole 111 and extend into the positioning cavity 13. The cylinder 131 in the positioning cavity 13 has a piston 132, and two top heads 133 capable of pushing the guide plates 252 upward are provided on the upper end surface of the piston 132. A gap allowing the lower rotating shaft 211 to pass through is left between the two top heads 133.

[0057] As Figure 2 shown, two strip-shaped bosses 113 are provided below the moving table 11. The two guide plates 252 are located between the two bosses 113. Two slide ways 16 enabling the bosses 113 to slide are provided on the base 1. As Figure 9 shown, a limiting groove 161 is provided between the two slide ways 16, and the positioning cavity 13 is arranged in the limiting groove 161 so that the lower rotating shaft 211 can pass through. After the water quenching is completed, as Figure 7 shown, air is introduced into the cylinder 131, and the top heads 133 of the piston 132 push the guide plates 252 upward to above the positioning cavity 13, so that the bottom ends of the guide plates 252 are located in the positioning through hole 111, facilitating the linear driver 12 to drive the moving table 11 to move and realizing the unloading of the roll 5.

[0058] As Figure 3 shown, the driving assembly 3 includes a lifting plate 31 slidably arranged on the side bracket 14 and a driving motor 32 installed on the lifting plate 31. A first lead screw lifting mechanism 33 capable of driving the lifting plate 31 to lift and lower is provided on the side bracket 14. The first lead screw lifting mechanism 33 is a prior art and will not be described in detail.

[0059] As Figure 1 and Figure 3 shown, the first lead screw lifting mechanism 33 drives the lifting plate 31 and the driving motor 32 to lift and lower, realizing the water quenching of rolls 5 with different heights and also facilitating the clamping and disassembling of the rolls 5.

[0060] As Figure 3 and Figure 5 shown, the upper clamping mechanism 4 includes a second fixed table 41, a second receiving table 43, a second inclined rail 42 and an upper top block 44. The structures of the upper clamping mechanism 4 and the lower clamping mechanism 2 are symmetrically arranged up and down.

[0061] As Figure 3 and Figure 5 shown, the second fixed table 41 is fixedly connected to the output shaft of the driving motor 32. The second fixed table 41 is annular, and three second inclined rails 42 are fixedly installed on the edge. The second inclined rails 42 are inclined downward from top to bottom in a direction away from the axis of the second fixed table 41.

[0062] As Figure 3 and Figure 6 shown, the second receiving table 43 is located below the second fixed table 41. A second upper rotating shaft 432 penetrating the second fixed table 41 is fixedly installed in the middle part of the upper end surface of the second receiving table 43. A third return spring 411 connecting the second receiving table 43 and the second fixed table 41 is sleeved on the second upper rotating shaft 432. The second upper rotating shaft 432 and the second fixed table 41 are also connected by a key.

[0063] As Figure 3 and Figure 5 shown, three chutes 431 are radially formed on the second receiving table 43. The lower ends of the second inclined rails 42 extend into the chutes 431. Three upper top blocks 44 are also provided. The sliding connection mode between the upper top block 44 and the second inclined rail 42 is the same as the sliding connection mode between the lower top block 24 and the first inclined rail 23; the sliding connection mode between the upper top block 44 and the chute 431 is the same as the sliding connection mode between the lower top block 24 and the first chute 212, and will not be described in detail. When the second receiving table 43 moves upward, the three upper top blocks 44 move closer to each other to clamp the upper end of the roll 5.

[0064] As Figure 1 and Figure 3 shown, after the lower part of the roll 5 is positioned, the first screw lifting mechanism 33 drives the lifting plate 31 and the driving motor 32 to move downward. The driving motor 32 drives the second fixed table 41 to move downward. The second fixed table 41 drives the second receiving table 43 to move downward, so that the upper end of the roll 5 abuts against the lower end surface of the second receiving table 43. As the second fixed table 41 continues to move downward, the distance between the second receiving table 43 and the second fixed table 41 decreases, and the upper top block 44 on the second inclined rail moves in a direction close to the axis of the second receiving table 43. The three upper top blocks 44 move closer to each other and clamp the upper end of the roll 5 to fix the roll 5.

[0065] As Figure 2 and Figure 5As shown, one side of the inductive heating coil 17 and the cooling water ring 18 are both fixedly installed on the fixing member 19. The fixing member 19 is a rod-shaped structure. The fixing member 19 is slidably connected in the telescopic box 191. An elastic member 192 is connected between the telescopic box 191 and the fixing member 19. The elastic member 192 is an elastic pull rod. A limit pin 193 is fixed below the fixing member 19. A positioning rod 194 is provided on the moving table 11. A positioning hole into which the limit pin 193 can be inserted is opened at the end of the positioning rod 194. A second lead screw lifting mechanism 195 capable of driving the telescopic box 191 to lift and lower is provided on the side bracket 14. The second lead screw lifting mechanism 195 is also a prior art and will not be described in detail.

[0066] As Figure 2 and Figure 4 shown, during the process of the linear driver 12 driving the moving table 11 to move, the positioning rod 194 drives the fixing member 19, the inductive heating coil 17 and the cooling water ring 18 to move synchronously, reducing the eccentricity phenomenon of the inductive heating coil 17 and the cooling water ring 18 relative to the rolling mill roll 5, which is beneficial to improving the quality of water quenching. During water quenching, the second lead screw lifting mechanism 195 drives the telescopic box 191, the inductive heating coil 17 and the cooling water ring 18 to move upward in sequence, and water quenches the rolling mill roll 5 from bottom to top.

[0067] The implementation principle of a water quenching machine for roll production in this embodiment:

[0068] The linear driver 12 drives the moving table 11 to move, so that the moving table 11 extends out directly below the upper clamping mechanism 4. The positioning rod 194 drives the fixing member 19, the inductive heating coil 17 and the cooling water ring 18 to move synchronously. The rolling mill roll 5 is sequentially passed through the inductive heating coil 17 and the cooling water ring 18 by using the hoisting mechanism and transferred to the first receiving table 21, reducing the interference between the hoisting cable and the upper clamping mechanism 4; before hoisting, the elastic pin 155 is pulled out, so that the top wheel 154 abuts against the side wall of the rolling mill roll 5, realizing the buffering of the rolling mill roll 5 during hoisting;

[0069] After the rolling mill roll 5 is transferred to the first receiving table 21, the first receiving table 21 moves downward, and the lower top block 24 on the inclined track 23 moves in the direction close to the axis of the first receiving table 21. The three lower top blocks 24 approach each other and clamp the lower end of the rolling mill roll 5, realizing the centering of the rolling mill roll 5;

[0070] A protective belt is installed on the hook 157, and the protective belt is arranged around the side wall of the rolling mill 5, which is beneficial to improving the stability of the rolling mill 5 during the moving process; the linear driver 12 drives the moving table 11 to retreat, so that the moving table 11 is reset, and the axes of the positioning through holes 111 and the positioning cavity 13 are collinear. The lower rotating shaft 211 passes through the positioning through hole 111 and falls into the positioning cavity 13 to realize the positioning of the rolling mill 5; while the lower rotating shaft 211 descends, it drives the first fixed table 22 to descend, and the first fixed table 22 drives the lifting disc 25 and the lifting block 251 to descend. The lifting block 251 compresses the sealing cavity 112, so that the hydraulic oil in the sealing cavity 112 enters the support frame hydraulic cylinder 156 through the hydraulic oil pipeline 158. The support frame hydraulic cylinder 156 drives the support frame 15 to move away from the rolling mill 5, and then drives the top wheel 154 to move away from the rolling mill 5, to make way for the up and down movement of the induction heating coil 17 and the cooling water ring 18, and the protective belt is removed;

[0071] The first screw rod lifting mechanism 33 drives the lifting plate 31 and the driving motor 32 to move downward. The driving motor 32 drives the second fixed table 41 to move downward, and the second fixed table 41 drives the second receiving table 43 to move downward, so that the upper end of the rolling mill 5 abuts against the lower end surface of the second receiving table 43. As the second fixed table 41 continues to move downward, the upper top blocks 44 on the inclined track 42 move towards the direction close to the axis of the second receiving table 43. The three upper top blocks 44 approach each other and clamp the upper end of the rolling mill 5 to realize the fixation of the rolling mill 5;

[0072] The driving motor 32 drives the second fixed table 41 to rotate, and then drives the rolling mill 5 to rotate. The second screw rod lifting mechanism 195 drives the telescopic box 191, the induction heating coil 17 and the cooling water ring 18 to move upward in sequence, and quenches the rolling mill 5 from bottom to top;

[0073] After the quenching is completed, the cylinder 131 is inflated, and the top head 133 of the piston 132 pushes the guide plate 252 to move upward above the positioning cavity 13, so that the bottom end of the guide plate 252 is located in the positioning through hole 111. The linear driver 12 drives the moving table 11 to move, and the first screw rod lifting mechanism 33 drives the lifting plate 31 and the driving motor 32 to move upward to release the clamping of the upper end of the rolling mill 5, and the rolling mill 5 is removed by using the hoisting mechanism.

[0074] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0075] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A water quenching machine for roll production, comprising an inductive heating coil and a cooling water ring arranged on a base, and a driving assembly for driving a roll on the base to rotate; an upper clamping mechanism and a lower clamping mechanism capable of clamping both ends of the roll are arranged below the driving assembly; characterized in that: A moving table is slidably arranged on a base, and a linear driver for driving the moving table to move is arranged on the base; The lower clamping mechanism includes a first receiving table rotatably connected to the moving table and capable of moving up and down, a first fixed table elastically arranged below the first receiving table, a plurality of first inclined rails obliquely arranged on the first fixed table, and lower top blocks slidably arranged on the first inclined rails; the first receiving table and the lower top blocks are slidably connected, and the first receiving table moves downward and drives the plurality of lower top blocks to approach each other to clamp the lower end of the roll; A lower rotating shaft penetrating the first fixed table is fixedly connected below the first receiving table. A positioning through hole through which the lower rotating shaft can penetrate is formed on the moving table. A positioning cavity whose axis is collinear with the axis of the positioning through hole is arranged on the base. Two sliding ways for the moving table to slide are arranged on the base. A limiting groove is arranged between the two sliding ways. The positioning cavity is arranged in the limiting groove, and a cylinder capable of abutting against the lower rotating shaft is arranged in the positioning cavity; A receiving bracket is slidably arranged on one side of the moving table. A top rod is elastically connected to the receiving bracket. One end of the top rod is rotatably connected to a top wheel capable of abutting against the side wall of the roll. The axis of the top wheel is parallel to the axis of the roll. An elastic pin for positioning the top rod is arranged on the receiving bracket. A receiving bracket hydraulic cylinder for driving the receiving bracket to slide toward or away from the first receiving table is arranged on the moving table; A ring-shaped lifting plate is rotatably connected below the first fixed table. A lifting block is fixedly connected below the lifting plate. The positioning through hole is a stepped hole. A sealing cavity into which the lifting block can extend is arranged on the side wall of the positioning through hole. The sealing cavity is filled with hydraulic oil. A hydraulic oil pipeline is connected between the sealing cavity and the receiving bracket hydraulic cylinder; Two guide plates capable of penetrating the positioning through hole and extending into the positioning cavity are arranged below the lifting plate. The cylinder has a piston, and a top head for pushing the guide plate to move upward is arranged on the upper end surface of the piston; A limiting nut is installed at the lower part of the first fixed table. The limiting nut is sleeved on the lower rotating shaft. A key groove is formed on the lower rotating shaft, and a key matching the key groove is arranged on the limiting nut; 2. The water quenching machine for roll production according to claim 1, characterized in that: Two top rods are arranged on the receiving bracket. The ends of the two top rods are both installed on a connecting piece. Hooks are arranged at both ends of the connecting piece on the side far from the top rods. A protective belt for protecting the roll is detachably connected to the hooks. The two top wheels are installed between the two hooks; 3. The water quenching machine for roll production according to claim 2, characterized in that: A side bracket is installed on one side of the base. The driving assembly includes a lifting plate slidably arranged on the side bracket and a driving motor installed on the lifting plate. A first lead screw lifting mechanism for driving the lifting plate to lift is arranged on the side bracket; 4. The water quenching machine for roll production according to claim 3, characterized in that: An upper clamping mechanism is arranged below the lifting plate. The upper clamping mechanism includes a second fixed table fixedly connected to the output shaft of the driving motor, a second receiving table elastically connected below the second fixed table, a plurality of second inclined rails obliquely arranged below the second fixed table, and upper top blocks slidably arranged on the second inclined rails; the second receiving table and the upper top blocks are slidably connected, and the second receiving table moves upward and drives the plurality of upper top blocks to approach each other to clamp the upper end of the roll.

5. The water quenching machine for roll production according to claim 4, wherein: One side of the inductive heating coil and the cooling water ring are both fixedly installed on the fixing member. The fixing member is slidably connected in the telescopic box. An elastic member is connected between the telescopic box and the fixing member. A limiting pin is fixed below the fixing member. A positioning rod is arranged on the moving table. A positioning hole into which the limiting pin can be inserted is opened at the end of the positioning rod. A second screw rod lifting mechanism capable of driving the telescopic box to lift is provided on the side bracket.

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