An integrated roll bending cylinder pad block device

Abstract

This utility model discloses an integral bending roll cylinder pad block device, including a frame, with lower roll bearing seats at both ends of the frame, and pad blocks on the upper surfaces of the two lower roll bearing seats; a lower roll is rotatably mounted between the two lower roll bearing seats, and an indicator ring is fixedly sleeved on the tail end shaft of the lower roll. This utility model replaces two independent pad blocks with a single integral bending roll cylinder pad block. The integral pad block is made of high-strength, wear-resistant material and is formed by precision casting or forging. Surface hardening treatment is applied to the contact surfaces of the integral pad block with the piston rod and the working roll bearing seat to improve surface hardness and wear resistance, reducing wear and deformation. High-precision positioning bosses are provided on the integral pad block, corresponding to grooves on the lower working roll bearing seat, ensuring accurate positioning of the pad block during installation and preventing displacement during rolling.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling technology, specifically to an integral bending roller cylinder pad block device. Background Technology

[0002] The bending cylinder pad is a mechanical component in the rolling mill bending roll system. It is mainly used to transmit the force of the bending cylinder and control the bending deformation of the roll.

[0003] The hydraulic thrust or pull output by the bending roll cylinder through the piston rod needs to be transmitted to the bearing housing or roll neck of the roll through the pad block, thereby applying a bending moment to the roll and adjusting the roll shape. In the Voestalpine 5-meter wide and thick plate rolling mill, the piston rod of the lower bending roll cylinder is pressed against the work roll bearing housing through the pad block, and the roll shape is adjusted by controlling the force on the pad block.

[0004] The lower bending roll cylinder designed by Voestalpine for 5-meter wide and thick plates is installed inside the rolling mill stand. During normal rolling, the two piston rods of the lower bending roll cylinder rest on the two pads of the bending roll cylinder. The two pads are respectively embedded in the bearing seat of the lower work roll. However, due to various reasons, the work roll moves around, causing the piston of the bending roll cylinder to shift and the pads to shift. This results in uneven force on the piston of the bending roll cylinder, causing damage and affecting normal production.

[0005] If the roll moves axially, either to the left or right, the contact surface between the pad and the piston rod will deviate from its designed center position. The originally vertical force will be decomposed into a lateral component, forcing the piston rod to tilt or be subjected to force on one side. This will accelerate the wear of the piston rod and cylinder seals, cause localized stress concentration and cracking of the pad, and may even lead to oil leakage in the bending cylinder or hydraulic system failure. Furthermore, axial movement of the roll will cause the contact line between the work roll and the support roll and the workpiece to shift, resulting in uneven distribution of rolling force and causing edge waviness, deviation, or thickness deviation in the strip.

[0006] Therefore, it is necessary to invent an integral bending roller cylinder pad block device to solve the above problems. Utility Model Content

[0007] The purpose of this invention is to provide an integral bending roller cylinder pad block device to solve the above-mentioned shortcomings in the technology.

[0008] To achieve the above objectives, the present invention provides the following technical solution: an integral bending roller cylinder pad block device, including a frame, with lower roller bearing seats provided at both ends of the upper part of the frame, and pad blocks provided on the upper surfaces of the two lower roller bearing seats;

[0009] A lower roll is rotatably mounted between the two lower roll bearing seats. An indicator ring is fixedly sleeved on the tail end shaft of the lower roll. An axial limiting mechanism is provided on the outer side of one of the lower roll bearing seats. A displacement sensor is fixedly mounted on the inner side of the other lower roll bearing seat at a position corresponding to the indicator ring.

[0010] The axial limiting mechanism includes:

[0011] A worm gear is disposed on the outer side of one of the lower roller bearing seats, and a worm is disposed below the worm gear. The worm gear and the worm are meshed and connected. A motor is fixedly installed on the back of one of the lower roller bearing seats.

[0012] A crossbar is provided on the front side of the worm gear, a ball bearing is provided at the front end of the crossbar, and a connector is provided on one side of the ball bearing.

[0013] As a preferred embodiment of this utility model, an upper roller bearing seat is provided above the corresponding positions of the two lower roller bearing seats. A hydraulic cylinder is fixedly installed at both ends of the top of each upper roller bearing seat, and a limit plate is provided at both ends of the bottom of each upper roller bearing seat. The output end of the hydraulic cylinder passes through the bottom of the upper roller bearing seat and is fixedly connected to the corresponding limit plate.

[0014] As a preferred embodiment of this utility model, the upper surface of the lower roller bearing seat is provided with a groove, the pad is embedded in the groove, both sides of the pad are provided with protrusions that are adapted to the groove, and both ends of the pad are movably installed with pull rings, and every two limiting plates at the same end correspond to the two ends of a pad.

[0015] As a preferred embodiment of this utility model, a through hole is provided on the outer side of one of the lower roller bearing seats, and the two end shafts of the lower roller are respectively rotatably connected to the two lower roller bearing seats. The through hole corresponds to the position of the shaft of the lower roller.

[0016] As a preferred embodiment of this utility model, the connector is located inside the through hole, the front end of the connector is fixedly connected to the end corresponding to the lower roller, the connector has a frustum-shaped structure, and the tail end of the connector is fixedly connected to the outer ring of the ball bearing.

[0017] As a preferred embodiment of this utility model, the inner ring of the ball bearing is fixedly connected to the front end of the crossbar, the tail end of the crossbar is fixedly connected to the middle position of the worm gear, the worm is horizontally rotatably mounted on the outside of a lower roller bearing seat, and the output end of the motor is fixedly connected to the front end of the worm.

[0018] As a preferred embodiment of this utility model, piston rods are provided on both sides of the lower roller bearing seat, and the two piston rods are connected to the two ends of the corresponding pads. The displacement sensor is electrically connected to the controller through a wire, and the motor is electrically connected to the controller through a wire.

[0019] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0020] By replacing two independent pads with a single integral curved roller cylinder pad, the integral pad is made of high-strength, wear-resistant material and is formed by precision casting or forging. The contact surfaces of the integral pad with the piston rod and the work roll bearing seat are surface hardened to improve surface hardness and wear resistance, reduce wear and deformation. High-precision positioning bosses are set on the integral pad, which correspond to the grooves on the lower work roll bearing seat to ensure that the pad can be accurately positioned during installation and prevent displacement during rolling.

[0021] By adding an axial limiting structure to the end of one of the lower rolls, axial movement of the roll during the rolling process is restricted. When the roll is subjected to axial force, the added axial limiting structure can provide a counterforce in time to maintain the axial position of the roll stable. An indicator ring is installed on the shaft at one end of the roll, and a displacement sensor is set to monitor the axial displacement of the roll in real time. Once the displacement exceeds the set threshold, the control system immediately issues an alarm, automatically adjusts the rolling parameters, and activates the bearing limiting mechanism to correct the roll position. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 This is a first-view perspective perspective view of the overall structure of this utility model;

[0024] Figure 2 This is a second-view perspective perspective view of the overall structure of this utility model;

[0025] Figure 3 This is a first-view exploded view of the overall structure of this utility model;

[0026] Figure 4 This is a second-view exploded view of the overall structure of this utility model;

[0027] Figure 5 This is an exploded view of the axial limiting structure of this utility model;

[0028] Figure 6 This is a connection diagram of the lower roller and the axial limiting mechanism of this utility model;

[0029] Figure 7 This utility model Figure 6 Enlarged view of area A.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Frame; 2. Lower roller bearing housing; 3. Upper roller bearing housing; 4. Lower roll; 5. Indicator ring; 6. Displacement sensor; 7. Axial limiting mechanism;

[0032] 22. Groove; 23. Piston rod; 24. Pad; 25. Pull ring; 26. Through hole;

[0033] 31. Hydraulic cylinder; 32. Limit plate;

[0034] 71. Motor; 72. Worm gear; 73. Worm wheel; 74. Crossbar; 75. Ball bearing; 76. Connector. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0036] This utility model provides, for example Figure 1-7 The integrated bending roller cylinder pad block device shown includes a frame 1, with lower roller bearing seats 2 provided at both ends of the upper part of the frame 1, and pad blocks 23 provided on the upper surface of the two lower roller bearing seats 2.

[0037] In this embodiment, the upper ends of the lower roller bearing seat 2 are provided with mounting pads 23, and the grooves 21 are adapted to the protrusions of the pads 23 to achieve embedded installation. The cooperation between the grooves 21 and the pads 23 can restrict the horizontal movement of the pads 23, ensuring that the pads 23 are accurately positioned and stably transmitting the force of the bending roller cylinder. The integral design of the pads 23 reduces the problem of uneven force caused by inconsistent displacement of the independent pads 23. The high-strength, wear-resistant materials and surface hardening treatment improve the wear resistance and deformation resistance of the pads 23 and extend their service life. The cooperation between the protrusions and the notches on both sides of the grooves 21 ensures that the pads 23 are accurately installed and prevents displacement during the rolling process. The pull ring 24 facilitates the installation, disassembly and maintenance of the pads 23.

[0038] A lower roller 4 is rotatably mounted between two lower roller bearing seats 2. An indicator ring 5 is fixedly sleeved on the tail end shaft of the lower roller 4. An axial limiting mechanism 7 is provided on the outer side of one lower roller bearing seat 2. A displacement sensor 6 is fixedly mounted on the inner side of one lower roller bearing seat 2 at the corresponding position of the indicator ring 5.

[0039] In this embodiment, the lower roll 4, as a key component in the rolling process, performs the rolling operation on the sheet metal. The indicator ring 5, in conjunction with the displacement sensor 6, can visually reflect the axial displacement of the lower roll 4, facilitating real-time monitoring and control. The indicator ring 5, working in conjunction with the displacement sensor 6, serves as an indicator component for monitoring the axial displacement of the lower roll 4, enabling the displacement sensor 6 to more conveniently and accurately obtain information on changes in the axial position of the lower roll 4, thus facilitating timely detection of axial movement.

[0040] The axial limiting mechanism 7 includes:

[0041] A worm gear 73 is located on the outside of a lower roller bearing housing 2. A worm 72 is located below the worm gear 73. The worm gear 73 and the worm 72 are meshed and connected. A motor 71 is fixedly installed on the back of a lower roller bearing housing 2.

[0042] A crossbar 74 is provided on the front side of the worm gear 73, a ball bearing 75 is provided at the front end of the crossbar 74, and a connector 76 is provided on one side of the ball bearing 75.

[0043] In this embodiment, the worm gear 73 in the axial limiting mechanism 7 is meshed with the worm 72, and a crossbar 74 is provided on the front. The worm 72 is driven to rotate by the motor 71, which in turn drives the worm gear 73 to rotate. The worm gear 73 is then connected to one end of the lower roll 4 via the crossbar 74, ball bearing 75, and connector 76, thereby achieving axial limiting control of the lower roll 4. The connector 76 provides a mechanical connection between the axial limiting mechanism 7 and the lower roll 4, transmitting the force of the axial limiting mechanism 7 to the lower roll 4 and restricting its axial movement. Its frustum-shaped structure facilitates connection with the lower roll 4's shaft. The motor 71 provides the power source for the axial limiting mechanism 7 and can precisely control the rotation of the worm 72 according to the control system commands, thereby achieving precise adjustment and limitation of the axial position of the lower roll 4.

[0044] Furthermore, in the above technical solution, an upper roller bearing seat 3 is provided above the corresponding positions of the two lower roller bearing seats 2. A hydraulic cylinder 31 is fixedly installed at both ends of the top of each upper roller bearing seat 3, and a limit plate 32 is provided at both ends of the bottom of each upper roller bearing seat 3. The output end of the hydraulic cylinder 31 passes through the bottom of the upper roller bearing seat 3 and is fixedly connected to the corresponding limit plate 32.

[0045] In this embodiment, hydraulic cylinders 31 are fixedly installed at both ends of the top of the upper roller bearing seat 3, and limiting plates 32 are set at both ends of the bottom. They cooperate with the lower roller bearing seat 2, pad block 23, etc. to form a complete bending roller system. The hydraulic cylinders 31 control the output force through the hydraulic system, which can accurately adjust the position of the limiting plates 32. The limiting plates 32 can limit the pad block 23, help ensure the stability of the position of the pad block 23 during the rolling process, prevent the pad block 23 from being displaced excessively, and enable the bending roller cylinder force to be stably and accurately transmitted to the lower roller 4.

[0046] Furthermore, in the above technical solution, a groove 21 is provided on the upper surface of the lower roller bearing seat 2, and a pad 23 is embedded in the groove 21. Both sides of the pad 23 are provided with protrusions that are adapted to the groove 21. Pull rings 24 are movably installed at both ends of the pad 23. Every two limiting plates 32 at the same end correspond to the two ends of a pad 23.

[0047] Furthermore, in the above technical solution, a through hole 25 is provided on the outer side of a lower roller bearing seat 2, and the two end shafts of the lower roller 4 are rotatably connected to the two lower roller bearing seats 2 respectively, with the through hole 25 corresponding to the position of the shaft of the lower roller 4.

[0048] Furthermore, in the above technical solution, the connector 76 is located inside the through hole 25, the front end of the connector 76 is fixedly connected to the end corresponding to the lower roller 4, the connector 76 has a frustum-shaped structure, and the tail end of the connector 76 is fixedly connected to the outer ring of the ball bearing 75.

[0049] In this embodiment, the through hole 25 provides installation space for the connector 76 of the axial limiting mechanism 7, so that the axial limiting mechanism 7 can be connected to the lower roll 4 and function. The installation of the displacement sensor 6 and the axial limiting mechanism 7 facilitates real-time monitoring and control of the axial displacement of the roll and prevents axial movement. The piston rod 22 is connected to the pad block 23, which can realize the transmission of the bending cylinder force.

[0050] Furthermore, in the above technical solution, the inner ring of the ball bearing 75 is fixedly connected to the front end of the crossbar 74, the tail end of the crossbar 74 is fixedly connected to the middle position of the worm gear 73, the worm 72 is horizontally rotatably mounted on the outside of a lower roller bearing seat 2, and the output end of the motor 71 is fixedly connected to the front end of the worm 72.

[0051] Furthermore, in the above technical solution, piston rods 22 are provided on both sides of the lower roller bearing seat 2, and the two piston rods 22 are connected to the two ends of the corresponding pads 23. The displacement sensor 6 is electrically connected to the controller through wires, and the motor 71 is electrically connected to the controller through wires.

[0052] In this embodiment, the displacement sensor 6 converts the displacement signal into an electrical signal and transmits it to the controller. Once the displacement exceeds the set threshold, it can promptly feed back to the control system, causing the control system to immediately issue an alarm and automatically adjust the rolling parameters or activate the axial limit mechanism 7 to prevent equipment damage and product quality problems caused by axial movement.

[0053] The working process of the integral bending roller cylinder pad block device provided by this utility model is as follows:

[0054] The integral bending roller cylinder pad is made of high-strength and wear-resistant material. The bending roller cylinder pad is accurately fitted into the groove 21 on the lower roller bearing seat 2 through its positioning boss, so that the pad 23 is stably positioned. At the same time, the pull rings 24 at both ends of the pad 23 can be used to assist in the installation, ensuring that the pad 23 is accurately positioned during the installation process.

[0055] Start the relevant equipment of the rolling mill, and the hydraulic system starts to work. The hydraulic cylinder 31 at the top of the upper roll bearing seat 3 outputs hydraulic thrust, which acts on the bending roll cylinder pad block through the limit plate 32 to initially adjust the roll shape so that the gap between the upper and lower rolls 4 meets the rolling process requirements.

[0056] The motor 71 of the axial limiting mechanism 7 is in standby mode, and components such as the worm gear 72 and worm wheel 73 are stationary. The displacement sensor 6 begins to monitor the axial displacement of the lower roll 4 in real time and transmits the initial position data to the controller. The bending cylinder outputs hydraulic thrust or pull through the piston rod 22. This force acts on the bending cylinder pad 23, which stably transmits the force to the bearing seat of the lower roll 4, applying a bending torque to the lower roll 4 and further precisely adjusting the roll profile to ensure the rolling thickness and shape accuracy of the sheet. During this process, if the axial force on the lower roll 4 is within the normal range, the axial limiting mechanism 7 does not activate, and the displacement sensor 6 continuously monitors the axial displacement of the lower roll 4, feeding the data back to the controller in real time.

[0057] When the lower roll 4 experiences axial movement, the indicator ring 5 moves along the shaft of the lower roll 4, and the displacement sensor 6 detects that the axial displacement exceeds the set threshold. The displacement sensor 6 quickly transmits the signal to the controller, which immediately issues an alarm to remind the operator and automatically starts the motor 71 of the axial limit mechanism 7. The motor 71 drives the worm gear 72 to rotate, and the worm gear 72 meshes with the worm wheel 73, causing the worm wheel 73 to rotate. The worm wheel 73 drives the connector 76 through the crossbar 74 and the ball bearing 75, applying a reverse force to the lower roll 4, limiting the axial movement of the lower roll 4 and maintaining the axial position stability of the lower roll 4.

[0058] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An integral bending roller cylinder pad block device, comprising a frame (1), characterized in that: The upper ends of the frame (1) are provided with lower roller bearing seats (2), and the upper surfaces of the two lower roller bearing seats (2) are provided with pads (23). A lower roller (4) is rotatably mounted between the two lower roller bearing seats (2). An indicator ring (5) is fixedly sleeved on the tail end shaft of the lower roller (4). An axial limiting mechanism (7) is provided on the outer side of one of the lower roller bearing seats (2). A displacement sensor (6) is fixedly installed on the inner side of one of the lower roller bearing seats (2) at the corresponding position of the indicator ring (5). The axial limiting mechanism (7) includes: A worm gear (73) is disposed on the outside of one of the lower roller bearing seats (2), and a worm (72) is disposed below the worm gear (73). The worm gear (73) and the worm (72) are meshed and connected. A motor (71) is fixedly installed on the back of one of the lower roller bearing seats (2). The worm gear (73) has a crossbar (74) on its front side, a ball bearing (75) is provided at the front end of the crossbar (74), and a connector (76) is provided on one side of the ball bearing (75).

2. The integral bending roller cylinder pad device according to claim 1, characterized in that: Above the corresponding positions of the two lower roller bearing seats (2), an upper roller bearing seat (3) is provided. A hydraulic cylinder (31) is fixedly installed at both ends of the top of each upper roller bearing seat (3). A limit plate (32) is provided at both ends of the bottom of each upper roller bearing seat (3). The output end of the hydraulic cylinder (31) passes through the bottom of the upper roller bearing seat (3) and is fixedly connected to the corresponding limit plate (32).

3. The integral bending roller cylinder pad device according to claim 2, characterized in that: The upper surface of the lower roller bearing seat (2) is provided with a groove (21), and the pad (23) is embedded in the groove (21). Both sides of the pad (23) are provided with protrusions that are adapted to the groove (21). Both ends of the pad (23) are movably installed with pull rings (24). Every two limiting plates (32) at the same end correspond to the two ends of a pad (23).

4. The integral bending roller cylinder pad block device according to claim 1, characterized in that: A through hole (25) is provided on the outer side of one of the lower roller bearing seats (2). The two ends of the lower roller (4) are rotatably connected to the two lower roller bearing seats (2) respectively. The through hole (25) corresponds to the position of the shaft of the lower roller (4).

5. The integral bending roller cylinder pad device according to claim 4, characterized in that: The connector (76) is located inside the through hole (25). The front end of the connector (76) is fixedly connected to the end corresponding to the lower roller (4). The connector (76) has a frustum-shaped structure. The tail end of the connector (76) is fixedly connected to the outer ring of the ball bearing (75).

6. The integral bending roller cylinder pad block device according to claim 1, characterized in that: The inner ring of the ball bearing (75) is fixedly connected to the front end of the crossbar (74), the tail end of the crossbar (74) is fixedly connected to the middle position of the worm gear (73), the worm (72) is horizontally rotatably mounted on the outside of a lower roller bearing seat (2), and the output end of the motor (71) is fixedly connected to the front end of the worm (72).

7. The integral bending roller cylinder pad device according to claim 1, characterized in that: Both sides of the lower roller bearing seat (2) are provided with piston rods (22), and the two piston rods (22) are connected to the two ends of the corresponding pads (23). The displacement sensor (6) is electrically connected to the controller through a wire, and the motor (71) is electrically connected to the controller through a wire.

Images