Lower roller adjusting device of blooming mill

Abstract

The utility model provides a lower roll adjusting device of a blooming mill, and belongs to the technical field of mechanical structures of blooming mills. According to the lower roller adjusting device, the structural design that the power assembly drives the worm to rotate, the worm rotates to drive the worm gear to rotate, and the worm gear rotates to drive the core ejecting component to move in the vertical direction is adopted, and the problems that in the prior art, the height position of a lower roller is adjusted by adding a gasket during roller replacement, operation is inconvenient, and the automation degree is low are solved. And the adjustment precision is difficult to guarantee. The device comprises a transmission assembly and a power assembly, wherein the power assembly adjusts the height of a bearing seat of a lower roller through the transmission assembly; the transmission assembly comprises a top core component, a top core component, a lower roller, a lower roller, a lower roller, a lower roller and a lower roller, the positioning shaft is fixedly installed, a positioning groove is formed in the bottom of the core ejecting component, and the positioning shaft and the positioning groove are in sliding fit in the vertical direction; threads are arranged on the inner wall of the worm gear, and the inner wall of the worm gear is meshed with the outer wall of the top core component; and the worm is meshed with the worm gear.

Description

Technical Field

[0001] This utility model belongs to the technical field of mechanical structure of billet rolling mill, and in particular relates to a lower roll adjustment device for billet rolling mill. Background Technology

[0002] A billet rolling mill is a piece of equipment used in the steel production process to roll raw materials (such as steel ingots and continuously cast billets) into billets that meet the requirements of subsequent processing. It is a core piece of equipment in the metallurgical rolling process. The lower roll is the core component of the billet rolling mill, which together with the upper roll completes the rolling deformation of the billet.

[0003] Because the rolling process involves a variety of dynamic changes and uncertainties, it is necessary to precisely control the position of the lower roll (including vertical pressing, axial alignment, tilt angle, etc.) to ensure the stability of the rolling process, the quality of billet forming, and the safe operation of the equipment.

[0004] In the existing technology, the lower roll height position of the billet rolling mill is adjusted by adding a shim set during roll changing. This adjustment method is inconvenient to operate, has a low degree of automation, and it is difficult to guarantee the accuracy of the adjustment. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a lower roll adjustment device for a billet rolling mill, which solves the problems of inconvenient operation, low degree of automation, and difficulty in ensuring adjustment accuracy caused by adjusting the lower roll height position by adding shims during roll changing in the prior art.

[0006] To achieve the above and other related objectives, this utility model provides a lower roll adjustment device for a billet rolling mill, used to adjust the height position of the bearing seat on which the lower roll is installed, including a transmission assembly and a power assembly. The power assembly adjusts the height of the bearing seat of the lower roll through the transmission assembly. The transmission assembly includes:

[0007] The top core component has threads on its outer wall, and the bearing seat of the lower roller is placed on top of the top core component;

[0008] The positioning shaft is fixedly installed, and a positioning groove is provided at the bottom of the top core component. The positioning shaft and the positioning groove slide together in the vertical direction.

[0009] The worm gear has threads on its inner wall, and the inner wall of the worm gear meshes with the outer wall of the top core component;

[0010] The worm gear meshes with the worm wheel;

[0011] The power component drives the worm to rotate, the rotation of the worm causes the worm wheel to rotate, and the rotation of the worm wheel drives the top core component to move in the vertical direction.

[0012] Optionally, it also includes a base, with the positioning shaft fixedly installed at the bottom of the base; the top core component, the worm gear, and the worm are all installed in the base.

[0013] Optionally, the power assembly includes an encoder and a hydraulic motor; the encoder controls the power output of the hydraulic motor, and the hydraulic motor drives the worm gear to rotate.

[0014] Optionally, the top core component includes a top core shaft, a top plate, and an intermediate bolt; the top plate has a countersunk through hole, the top core shaft has a threaded hole, the intermediate bolt passes through the countersunk through hole and is then screwed into the threaded hole to connect the top core shaft and the top plate; the bottom of the bolt head of the intermediate bolt and the bottom of the countersunk head of the countersunk through hole are provided with an adjustment gap, and the shank of the intermediate bolt and the countersunk through hole are clearance fitted.

[0015] Optionally, the bottom of the top plate and the top of the top mandrel are opposite each other, and both are provided with corresponding arc surfaces.

[0016] Optionally, the top core component further includes a sealing ring plate and a sealing ring gasket, wherein the sealing ring plate is fixed to the bottom of the top plate; the inner wall of the sealing ring plate is fitted onto the outer wall of the top core shaft, and a sealing ring gasket is provided between the two.

[0017] Optionally, it also includes a connecting rod, a coupling, and a gear pair; there are two sets of the transmission assembly; the worms in the two sets of transmission assemblies are connected by a connecting rod, the connecting rod and the two worms are coaxial, a coupling is installed on the connecting rod, and the power assembly transmits power to one of the worms through the gear pair; the rotation of one worm drives the connecting rod to rotate, and the rotation of the connecting rod drives the other worm to rotate.

[0018] As described above, the lower roll adjustment device for a billet rolling mill of this utility model has at least the following beneficial effects:

[0019] The lower roll adjustment device of this billet rolling mill is designed by using a power assembly to drive a worm gear to rotate. The rotation of the worm gear drives the worm wheel to rotate, and the rotation of the worm wheel drives the mandrel component to move vertically. This design allows operators to conveniently and accurately adjust the height of the lower roll bearing seat, thereby adjusting the position of the lower roll. Compared to adding shims, the level of automation is significantly improved. At the same time, the sliding fit design of the positioning shaft and positioning groove in the vertical direction ensures that the mandrel component can only slide in the vertical direction, preventing the mandrel component from rotating with the worm wheel, which could lead to slippage, deviation, or other problems that would cause the adjustment device to malfunction. Attached Figure Description

[0020] Figure 1The diagram shown is a schematic of the lower roll adjustment device of a billet rolling mill according to this utility model.

[0021] Figure 2 Displayed as Figure 1 AA sectional view.

[0022] Figure 3 Displayed as Figure 1 BB cross-sectional view.

[0023] Figure 4 Displayed as Figure 3 A magnified view of a portion of the image.

[0024] Component designation explanation

[0025] Transmission assembly 1, top core component 11, positioning groove 111, top core shaft 112, top plate 113, intermediate bolt 114, countersunk through hole 115, threaded hole 116, adjustment interval 117, sealing ring plate 118, sealing ring gasket 119.

[0026] Positioning shaft 12, worm gear 13, worm 14;

[0027] Power assembly 2, encoder 21, hydraulic motor 22;

[0028] 3. Connecting rod; 4. Coupling; 5. Gear pair; 6. Base. Detailed Implementation

[0029] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0030] Please see Figures 1 to 4 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0031] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0032] Please see Figure 1 This utility model provides a lower roll adjustment device for a billet rolling mill. Like existing lower roll adjustment devices, it is used to adjust the height of the bearing seat on which the lower roll is installed. The difference from existing technology is that this lower roll adjustment device includes a transmission assembly 1 and a power assembly 2. The power assembly 2 adjusts the height of the bearing seat of the lower roll through the transmission assembly 1. The transmission assembly 1 includes:

[0033] like Figure 2 and Figure 3 The top core component 11 shown has threads on its outer wall, and the bearing seat of the lower roller is placed on top of the top core component 11.

[0034] like Figure 2 The positioning shaft 12 shown is fixedly installed. The bottom of the top core component 11 is provided with a positioning groove 111. The positioning shaft 12 and the positioning groove 111 slide together in the vertical direction.

[0035] like Figure 3 The worm gear 13 shown has threads on its inner wall, and the inner wall of the worm gear 13 meshes with the outer wall of the core component 11.

[0036] like Figure 3 The worm 14 shown meshes with the worm wheel 13.

[0037] The power component 2 drives the worm gear 14 to rotate, which in turn drives the worm wheel 13 to rotate. The rotation of the worm wheel 13 drives the top core component 11 to move vertically. That is, the structure of the transmission component 1 is similar to the design of a lead screw, which allows the operator to conveniently and accurately adjust the height of the bearing seat of the lower roller, thereby adjusting the position of the lower roller. Compared with the method of adding shims, the degree of automation is significantly improved. At the same time, the design of the fixedly installed positioning shaft 12 and the positioning groove 111 opened at the bottom of the top core component 11 sliding in the vertical direction ensures that the top core component 11 can only slide in the vertical direction, preventing the top core component 11 from rotating with the worm wheel 13, which would cause slippage, deviation, or other problems that would cause the adjustment device to fail.

[0038] In another implementation, please refer to Figure 1 and Figure 3 The lower roll adjustment device of this billet mill also includes a base 6, and the positioning shaft 12 is fixedly installed at the bottom of the base 6; the top core component 11, the worm gear 13 and the worm 14 are all installed in the base 6, providing a stable installation and fixing position for the transmission assembly 1, and ensuring the reliability of this lower roll adjustment device.

[0039] In another implementation, please refer to Figure 1The power assembly 2 includes an encoder 21 and a hydraulic motor 22; the encoder 21 controls the power output of the hydraulic motor 22, which drives the worm gear 14 to rotate; the encoder 21 is a sensor used to detect and provide feedback on the position, speed or angle of mechanical motion, and its core function is to convert mechanical motion into electrical signals so that the control system can monitor and adjust the equipment status in real time; through the joint cooperation of the hydraulic motor 22 and the encoder 21, precise control of the lifting distance of the top core component 11 is achieved.

[0040] In another implementation, please refer to Figure 3 and Figure 4 The core component 11 includes a core shaft 112, a top plate 113, and an intermediate bolt 114. The top plate 113 has a countersunk hole 115, and the top of the core shaft 112 has a threaded hole 116. The intermediate bolt 114 passes through the countersunk hole 115 and is then screwed into the threaded hole 116, connecting the core shaft 112 and the top plate 113. An adjustment gap 117 is provided between the bottom of the bolt head of the intermediate bolt 114 and the bottom of the countersunk head of the countersunk hole 115 (allowing the top plate 113 to swing appropriately). The shank of the intermediate bolt 114 and the countersunk hole 115... 15 Clearance fit; that is, although the intermediate bolt 114 fixes the top plate 113 and the top core shaft 112 together, the top plate 113 can also slide a certain distance along the rod of the intermediate bolt 114. The bearing seat of the lower roller is installed on the top plate 113. The bearing seat of the lower roller slides up and down with the top plate 113, and the lower roller slides up and down with it. The structural design of this embodiment provides a specific structural design for the top core component 11, while also preventing the problem of unreliable operation of the lower roller adjustment device due to excessive movement distance of the top core component 11.

[0041] In another implementation, please refer to Figure 3 and Figure 4 The bottom of the top plate 113 and the top of the top core shaft 112 are opposite each other and are both provided with corresponding arc surfaces. Because the bearing seat of the lower roller will shake to a certain extent during operation, the structure of this embodiment is designed to provide a certain buffer when the bearing seat of the lower roller shakes, thus ensuring the structural stability of the lower roller adjustment device during operation.

[0042] In another implementation, please refer to Figure 3 and Figure 4 The top core component 11 also includes a sealing ring plate 118 and a sealing ring gasket 119. The sealing ring plate 118 is fixed to the bottom of the top plate 113. The inner wall of the sealing ring plate 118 is fitted onto the outer wall of the top core shaft 112, and a sealing ring gasket 119 is provided between the two. This prevents foreign objects from entering the working space of the device and ensures the working stability of the device.

[0043] In another implementation, please refer to Figure 1 The lower roll adjustment device of this billet rolling mill also includes: a connecting rod 3, a coupling 4, and a gear pair 5; there are two sets of the transmission assembly 1; the worm gear 14 in the two sets of transmission assemblies 1 are connected by the connecting rod 3, the connecting rod 3 and the two worm gears 14 are coaxial, the coupling 4 is installed on the connecting rod 3, and the power assembly 2 transmits power to one of the worm gears 14 through the gear pair 5; the rotation of one worm gear 14 drives the connecting rod 3 to rotate, and the rotation of the connecting rod 3 drives the other worm gear 14 to rotate; the structural form of this embodiment, through the design of connecting the worm gears 13 in the two sets of transmission assemblies 1 by the connecting rod 3, makes it possible to drive the top core component 11 in the two sets of transmission assemblies 1 to lift the bearing seats of the two lower rolls with only one power assembly 2, thereby driving the lifting and lowering of the two lower rolls; moreover, the design of one power assembly 2 driving two sets of transmission assemblies 1 also ensures the smoothness of the movement of this device when adjusting the position of the lower rolls; the design of the coupling 4 allows the operator to cut off the transmission of the connecting rod 3 as needed, improving the applicability of this adjustment device.

[0044] In other implementations, such as Figure 4 As shown, the sealing ring plate 118 is fixedly installed at the bottom of the top plate 113 by bolts, and the sealing ring plate 118 and sealing ring gasket 119 can be easily replaced as needed.

[0045] In summary, this invention utilizes a structural design where the power component 2 drives the worm gear 14 to rotate, which in turn drives the worm wheel 13 to rotate. The rotation of the worm wheel 13 then drives the top core component 11 to move vertically. This design allows operators to conveniently and precisely adjust the height of the lower roller's bearing seat, thereby adjusting the lower roller's position. Compared to adding shims, this significantly improves automation. Furthermore, the sliding fit between the positioning shaft 12 and the positioning groove 111 ensures that the top core component 11 can only slide vertically, preventing it from rotating with the worm wheel 13 and causing slippage, deviation, or other issues that could lead to the adjustment device malfunctioning. Therefore, this invention effectively overcomes the shortcomings of existing technologies and possesses high industrial application value.

[0046] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A lower roll adjustment device for a billet rolling mill, used to adjust the height position of the bearing seat on which the lower roll is installed, characterized in that: It includes a transmission assembly and a power assembly, wherein the power assembly adjusts the height of the bearing seat of the lower roller through the transmission assembly; The transmission assembly includes: The top core component has threads on its outer wall, and the bearing seat of the lower roller is placed on top of the top core component; The positioning shaft is fixedly installed, and a positioning groove is provided at the bottom of the top core component. The positioning shaft and the positioning groove slide together in the vertical direction. The worm gear has threads on its inner wall, and the inner wall of the worm gear meshes with the outer wall of the top core component; The worm gear meshes with the worm wheel; The power component drives the worm to rotate, the rotation of the worm causes the worm wheel to rotate, and the rotation of the worm wheel drives the top core component to move in the vertical direction.

2. A device for adjusting the lower roll of a breakdown rolling mill according to claim 1, characterized in that Also includes: The base has the positioning shaft fixedly installed at the bottom; the top core component, the worm gear, and the worm are all installed in the base.

3. The lower roll adjustment device for a billet rolling mill according to claim 1, characterized in that: The power components include an encoder and a hydraulic motor; The encoder controls the power output of the hydraulic motor, and the hydraulic motor drives the worm gear to rotate.

4. The lower roll adjustment device for a billet rolling mill according to claim 1, characterized in that: The top core component includes a top core shaft, a top plate, and intermediate bolts; The top plate has a countersunk through hole, and the top of the top mandrel has a threaded hole. The intermediate bolt passes through the countersunk through hole and is then screwed into the threaded hole to connect the top mandrel and the top plate. There is an adjustment gap between the bottom of the bolt head of the intermediate bolt and the bottom of the countersunk hole, and the shank of the intermediate bolt and the countersunk hole are clearance-fitted.

5. The lower roll adjustment device for a billet rolling mill according to claim 4, characterized in that: The bottom of the top plate and the top of the top core shaft are opposite each other, and both are provided with corresponding arc surfaces.

6. The lower roll adjustment device for a billet rolling mill according to claim 4, characterized in that: The top core component also includes a sealing ring plate and a sealing ring gasket, wherein the sealing ring plate is fixed to the bottom of the top plate; The inner wall of the sealing ring plate is fitted onto the outer wall of the top mandrel, and a sealing ring gasket is provided between the two.

7. A device for adjusting the lower roll of a breakdown rolling mill according to claim 1, characterized in that, Also includes: Connecting rods, couplings, and gear pairs; the transmission assembly consists of two sets; The worm gears in the two transmission assemblies are connected by a connecting rod. The connecting rod and the two worm gears are coaxial. A coupling is installed on the connecting rod. The power assembly transmits power to one of the worm gears through the gear pair. One of the worm gears rotates, causing the connecting rod to rotate, and the connecting rod rotates, causing the other worm gear to rotate.

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