Novel gearbox type wear-resistant disc side guide plate before hot rolling and coiling

Abstract

The utility model relates to the technical field of steel rolling, and discloses a novel gear box type wear-resistant disc side guide plate before hot rolling and coiling, which comprises a roller bed supporting beam, a hydraulic push rod is assembled on the side wall of the roller bed supporting beam, a guide plate beam is fixedly connected to the output end of the hydraulic push rod, a disc taper shank is assembled in the guide plate beam, and a gear box is arranged on the disc taper shank. A disc lining plate is connected to the outer portion of the disc taper shank in an interference fit mode, the disc taper shank is sleeved with a gear shaft, the interior of the gear shaft is in threaded connection with a screw rod, and the screw rod penetrates through a center hole of the gear shaft and extends into the disc taper shank. According to the novel gearbox type wear-resistant disc side guide plate before hot rolling and coiling, an integrated rotating body is combined through the pre-tightening force of the bolts, so that only one nut is needed for disassembling and assembling the disc; the rotation axis of the disc is ensured to be highly overlapped with the axis of the gear shaft by utilizing the Morse taper, so that the bending moment resistance and the radial impact load bearing capacity of the disc are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling technology, specifically a novel wear-resistant disc side guide plate for the gearbox type before hot rolling coiling. Background Technology

[0002] In the hot rolling process, after exiting the finishing mill, the strip steel enters the coiler at a high speed. The front guide plate of the coiler can be adjusted to guide the strip steel to the center position of the coiler and coil it around the coiling shaft, thereby improving the coil shape quality. It ensures that the strip steel enters the coiler smoothly along the prescribed path, effectively preventing strip steel from deviating and forming defects such as towering or loose coils during coiling. Correcting deviation can prevent sudden changes in strip steel tension. Wear-resistant liners protect the base material of the side guide plates from the effects of strip steel wear, corrosion, and high temperatures. In the hot rolling environment, the strip steel temperature is high, and there will be impurities such as iron oxide scale. In addition, the high impact load of the high-speed steel strip on the liner can damage the base material of the side guide plates. Strip-shaped wear-resistant liners can isolate the base material of the side guide plates from these harmful factors, preventing damage to the base material and reducing the maintenance and replacement costs of the side guide plates.

[0003] However, in order to meet customer needs and improve quality and efficiency, the steel industry has continuously increased the output of thin-gauge high-end hot-rolled plates and silicon steel. As a result, the frequency of replacement of wear-resistant strip liners has increased, which affects output and increases maintenance costs. The biggest problem is that the friction grooves of the strip wear-resistant liners accumulate hot burrs. After they fall off the steel plate surface and are rolled up, they cause more and more quality disputes in the next process.

[0004] The domestic patent "A Side Guide Plate Disc Liner Device" (patent number CN207929776U) uses a wear-resistant disc and ratchet drive. This invention uses ratchet drive and is externally mounted. The disc is complex to disassemble and is prone to jamming after being subjected to bending moment force, making it unable to operate stably for a long time in high temperature and high humidity environments.

[0005] The domestic patent "A Side Guide Plate Device with Rotating Liner" (patent number CN105880300A) has issues with the following: the rotating liner is difficult to disassemble; the locking nut of the rotating disc is lower than the surface of the disc, resulting in a pit; the irregular wavy edge of the steel strip may collide with the pit, posing a risk of steel flying off; after the pit collides and deforms with the edge of the bouncing steel plate, it is difficult to tighten and disassemble the nut; there are gaps between the locking nut and the disc, which are prone to corrosion and loosening in high temperature, high humidity and high impact load environments; and the use of sliding bearings is prone to damage under long-term bending moment.

[0006] The domestic patent "wear-resistant side guide disc type guide plate device" patent number "CN219985782U" adopts the transmission method of hydraulic drive rack and pinion. The problem is that the wear-resistant disc single bearing support method cannot bear high impact load; the disc cannot be quickly changed, and most guide plates do not have space to arrange long stroke hydraulic cylinders.

[0007] The article "Wear-Resistant Side Guide Plate for Front Disc of Hot Rolling Coiler" published in the journal "China First Heavy Industries Technology" in 2023, No. 4 (Total No. 214), describes how China First Heavy Industries independently developed a wear-resistant side guide plate for front disc of coiler in early 2020. This plate was applied to the front guide plate of a 1250 mm hot continuous rolling coiler in China, achieving the localization of the technology and solving the technical problem of improving the service life of liners in the steel industry. However, it is still difficult to promote its application. The wear-resistant disc of this technology is connected to the rotating shaft by a pressure cap, and there is a gap between the pressure cap and the disc, which is prone to corrosion and loosening under high temperature, high humidity, and high load impact. The chain drive used in this technology suffers from low transmission accuracy and insufficient self-locking force. Therefore, a new type of wear-resistant side guide plate for front gearbox of hot rolling coiler is urgently needed to solve these problems. Utility Model Content

[0008] Technical problems to be solved

[0009] To address the shortcomings of existing technologies, this utility model provides a novel wear-resistant disc side guide plate for the gearbox type before hot rolling coiling.

[0010] (II) Technical Solution

[0011] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A novel gearbox-type wear-resistant disc side guide plate for hot rolling coiling includes a roller support beam. A hydraulic push rod is mounted on the side wall of the roller support beam. A guide plate beam is fixedly connected to the output end of the hydraulic push rod. A socket plate gearbox is mounted inside the guide plate beam. A reducer is fixedly installed on the top of the socket plate gearbox. A first bevel gear is fixedly connected to the output shaft of the reducer. A rotating shaft is rotatably connected inside the socket plate gearbox. A meshing device is fixedly connected to the outside of the rotating shaft. The second bevel gear, the end of the shaft away from the second bevel gear is fixedly connected to a transmission gear, the side wall of the socket plate gearbox is equipped with a number of idler gears, the inside of the guide beam is equipped with a disc cone shank, the outside of the disc cone shank is interference-fitted with a disc liner, the outside of the disc cone shank is sleeved with a gear shaft, the inside of the gear shaft is threaded with a screw, the screw passes through the center hole of the gear shaft and extends into the inside of the disc cone shank, the top of the guide beam is fixedly installed with a cooling water pipe, and the side of the guide beam near the disc liner is equipped with a heat insulation plate.

[0012] The beneficial effects of this utility model are:

[0013] This novel hot-rolled front gearbox-type wear-resistant disc side guide plate creatively combines a Morse taper hollow gear shaft, a disc with a Morse taper shank, and high-strength connecting bolts into a single rotating body. The preload of the bolts integrates these components, allowing for disc disassembly and installation with just a single nut. The friction and clamping force between the tapered surfaces effectively resist torque, preventing loosening of the connected parts during operation. The Morse taper ensures that the disc's axis of rotation is highly aligned with the gear shaft's axis, significantly improving the disc's resistance to bending moment and radial impact loads. Compared to ordinary cylindrical connections, the Morse taper connection provides higher rigidity when transmitting torque.

[0014] This new type of wear-resistant disc side guide plate for the gearbox before hot rolling coiling takes into account the thickness and angle of the transition plate between discs, which can effectively prevent the disc from getting stuck in the gap due to the accumulation of sparks and burrs; the heat insulation plate with water groove can effectively reduce the temperature rise of the guide plate body and transmission system caused by heat radiation and heat conduction; high load-bearing bearing supports with sealing components are designed at both ends of the gear shaft to prevent debris and water from entering the bearing, thus improving the durability of the transmission part.

[0015] Based on the above technical solution, the present invention can be further improved as follows.

[0016] Furthermore, a water receiving box is installed inside the heat insulation plate, the water receiving box is located below the cooling water pipe, the bottom of the cooling water pipe has a water spray hole, and the interior of the heat insulation plate has an arc-shaped groove that matches the disc liner.

[0017] The beneficial effect of adopting the above-mentioned further solution is that the water from the spray hole falls into the water receiving box, and after the water receiving box of the heat insulation plate is full, it flows down from the surface of the heat insulation plate to the surface of the disc, which cools the disc and blocks and delays the heat conduction and heat radiation of the high-temperature steel strip to the guide plate beam.

[0018] Furthermore, a roller is mounted on the side wall of the roller support beam, and a transverse track is mounted between the guide beam and the roller.

[0019] Furthermore, a gearbox breather valve is installed on the top of the socket-type gearbox, a cooling water pipe inlet is fixedly connected to the top of the cooling water pipe, and two lifting holes are installed on the top of the socket-type gearbox.

[0020] The beneficial effect of adopting the above-mentioned further solution is that the unique integrated design of the socket plate gearbox and reducer allows for one-time installation within the side guide beam through the lifting holes.

[0021] Furthermore, a front bearing support is fixedly connected inside the guide beam on the side near the disc liner, and a front bearing adapted to the disc cone shank is installed inside the front bearing support. A rear bearing support is fixedly connected inside the guide beam on the side away from the disc liner, and a rear bearing adapted to the gear shaft is installed inside the rear bearing support. Both the front and rear bearing support are equipped with high-temperature sealing rings.

[0022] The advantage of adopting the above-mentioned further solution is that it prevents metal debris and water from entering the bearing.

[0023] Furthermore, a washer is provided at the connection between the screw and the gear shaft, the transmission gear meshes with the idler gear, and the idler gear meshes with the gear shaft.

[0024] The advantage of adopting the above-mentioned further solution is that it ensures sealing by setting gaskets.

[0025] Furthermore, a transition plate is installed on the side of the guide beam near the disc liner, the edge of the transition plate is thin, the disc liner has no less than ten plastic parts, and the transition plate is located between two disc liners.

[0026] The beneficial effect of adopting the above-mentioned further solution is that the transition plate between the wear-resistant discs is designed with thin edges to prevent it from colliding with the edge of the steel plate and causing it to fly off. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a sectional view of the guide plate beam structure of this utility model;

[0029] Figure 3 This is a schematic diagram of the structure of the guide plate beam in this utility model;

[0030] Figure 4 This is a structural cross-sectional view of the socket-type gearbox of this utility model;

[0031] Figure 5 This is a schematic diagram of the structure of the socket-type gearbox in this utility model;

[0032] Figure 6 This is a schematic diagram of the structure of the second bevel gear in this utility model.

[0033] In the diagram: 1. Roller support beam; 2. Idler roller; 3. Guide beam; 4. Disc liner; 5. Reducer; 6. Transition plate; 7. Gearbox breather valve; 8. Cooling water pipe inlet; 9. Lifting hole; 10. Cooling water pipe; 11. Socket gearbox; 12. Heat insulation plate; 13. Front bearing support seat; 14. Front bearing; 15. Disc taper shank; 16. Rear bearing support seat; 17. Rear bearing; 18. Screw; 19. Washer; 20. Gear shaft; 21. First bevel gear; 22. Second bevel gear; 23. Transmission gear; 24. Idler gear. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] In the embodiments, by Figures 1-6 The present invention provides a novel wear-resistant disc side guide plate for gearbox type before hot rolling coiling. The present invention includes a roller support beam 1, a hydraulic push rod is mounted on the side wall of the roller support beam 1, a guide plate beam 3 is fixedly connected to the output end of the hydraulic push rod, a support roller 2 is mounted on the side wall of the roller support beam 1, and a transverse track is mounted between the guide plate beam 3 and the support roller 2.

[0036] Specifically, refer to Figure 5 The guide beam 3 is internally equipped with a socket-type gearbox 11. A reducer 5 is fixedly installed on the top of the socket-type gearbox 11. A first bevel gear 21 is fixedly connected to the output shaft of the reducer 5. A rotating shaft is rotatably connected inside the socket-type gearbox 11. A second bevel gear 22 that meshes with the first bevel gear 21 is fixedly connected to the outside of the rotating shaft. A transmission gear 23 is fixedly connected to the end of the rotating shaft away from the second bevel gear 22. A number of idler gears 24 are assembled on the side wall of the socket-type gearbox 11. The transmission gear 23 meshes with the idler gears 24.

[0037] Specifically, refer to Figure 4The guide beam 3 is internally fitted with a disc cone shank 15. The disc cone shank 15 is externally connected to a disc liner 4 with an interference fit. A gear shaft 20 is sleeved on the outside of the disc cone shank 15. A screw 18 is internally threaded onto the gear shaft 20. The screw 18 passes through the central hole of the gear shaft 20 and extends into the interior of the disc cone shank 15. An idler gear 24 meshes with the gear shaft 20. The disc liner 4 is fitted with a Morse taper shank and a Morse taper hole on the gear shaft 20. It is pre-tightened to the gear shaft 20 with high-strength bolts. This conical surface fit not only provides high axial positioning accuracy, but also allows for installation and disassembly with just one nut. Furthermore, it can withstand large bending moments and impact loads.

[0038] In this embodiment, in actual use, after the first bevel gear 21 on the output shaft of the reducer 5 and the second bevel gear 22 of the socket-type gearbox 11 are connected and the transmission direction is changed, the torque is transmitted through the transmission gear 23 fixed on the gear plate of the socket-type gearbox 11. After the wear-resistant disc 4 is rotated through the idler gear 24, all the disc liners 4 rotate synchronously, but they do not need to rotate in one direction. The synchronously rotating wear-resistant discs have different directions, so when the wear-resistant discs are subjected to frictional force from the steel belt in one direction, they can lock each other in rotation. The wear resistance of the disc liners 4 is improved by laser cladding. The service life is improved by increasing the friction area through rotation. The disc friction grooves are discontinuous. With the rotation changing the position of the grooves, the self-cleaning function of spark burrs can be achieved.

[0039] Specifically, refer to Figure 4 A cooling water pipe 10 is fixedly installed on the top of the guide beam 3. A heat insulation plate 12 is installed on the side of the guide beam 3 near the disc liner 4. A water receiving box is installed inside the heat insulation plate 12. The water receiving box is located below the cooling water pipe 10. A water spray hole is opened at the bottom of the cooling water pipe 10. An arc-shaped groove that matches the disc liner 4 is opened inside the heat insulation plate 12.

[0040] In this embodiment, in actual use, water from the spray holes falls into the water receiving box. After the water receiving box of the heat insulation plate is full, it flows down from the surface of the heat insulation plate to the surface of the disc liner 4, which cools the disc liner 4 and blocks and delays the heat conduction and heat radiation of the high-temperature steel strip to the guide plate beam 3.

[0041] Specifically, refer to Figure 5 The top of the socket-type gearbox 11 is equipped with a gearbox breather valve 7, the top of the cooling water pipe 10 is fixedly connected with a cooling water pipe inlet 8, and the top of the socket-type gearbox 11 is equipped with two lifting holes 9.

[0042] In this embodiment, the unique integrated design of the socket plate gearbox and reducer allows for one-time installation within the side guide beam 3 via the lifting hole 9. Its sealing design ensures gear lubrication, requiring only a two-year scheduled inspection, thus ensuring efficient and stable operation.

[0043] Specifically, refer to Figure 4 The guide beam 3 is fixedly connected to the front bearing support 13 on the side near the disc liner 4. The front bearing support 13 is equipped with a front bearing 14 that matches the disc cone shank 15. The guide beam 3 is fixedly connected to the rear bearing support 16 on the side away from the disc liner 4. The rear bearing support 16 is equipped with a rear bearing 17 that matches the gear shaft 20. Both the front bearing support 13 and the rear bearing support 16 are equipped with high-temperature sealing rings. A washer 19 is provided at the connection between the screw 18 and the gear shaft 20. The sealing is ensured by the washer 19.

[0044] In this embodiment, in actual use, to prevent metal debris and water from entering the bearing, the two ends of the gear shaft 20 are mounted on the thick steel plates on both sides of the side guide plate of the guide beam 3 using flanged sliding bearings and fixed supports, which can withstand large bending moment forces and large impact loads.

[0045] Specifically, refer to Figure 3 A transition plate 6 is installed on the side of the guide beam 3 near the disc liner 4. The edge of the transition plate 6 is thin. There are no less than ten plastic parts in the disc liner 4. The transition plate 6 is located between two disc liners 4.

[0046] In this embodiment, in actual use, the transition plate 6 between the wear-resistant liners 4 is designed to be thin at the edges to prevent it from colliding with the edge of the steel plate and causing it to fly off. The thinning of the end of the transition plate 6 allows even if spark burrs are embedded, they can fall off naturally due to the reduced contact area, preventing the increased contact area from accumulating in the gap between the disc liner 4 and the transition plate 6 and then squeezing and restricting the rotation of the disc liner 4.

[0047] Working principle:

[0048] By utilizing the idle time between two coils of steel, i.e., after receiving the signal that the coiler has stopped working, the reducer 5 is started. The reducer 5 has a built-in encoder that rotates by an angle (e.g., 7 degrees, 11 degrees, 13 degrees), so that the friction band formed on the disc liner 4 never overlaps. After continuously changing the angle and being rubbed by the steel strip, the laser-clad alloy surface of the disc forms a ring-shaped friction band without deep grooves, thus making full use of the area of ​​the expensive alloy, extending its service life, reducing maintenance frequency, and achieving the goal of reducing costs.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel wear-resistant disc side guide plate of gearbox type before hot rolling coiling, comprising a roller support beam (1), characterized in that: A hydraulic push rod is mounted on the side wall of the roller support beam (1). A guide beam (3) is fixedly connected to the output end of the hydraulic push rod. A socket plate gearbox (11) is mounted inside the guide beam (3). A reducer (5) is fixedly installed on the top of the socket plate gearbox (11). A first bevel gear (21) is fixedly connected to the output shaft of the reducer (5). A rotating shaft is rotatably connected inside the socket plate gearbox (11). A second bevel gear (22) that meshes with the first bevel gear (21) is fixedly connected to the outside of the rotating shaft. A transmission gear (23) is fixedly connected to the end of the rotating shaft away from the second bevel gear (22). The side wall of the plate gearbox (11) is equipped with a number of idler gears (24). The inside of the guide beam (3) is equipped with a disc cone shank (15). The outside of the disc cone shank (15) is connected with a disc liner (4) by interference fit. The outside of the disc cone shank (15) is fitted with a gear shaft (20). The inside of the gear shaft (20) is connected with a screw (18). The screw (18) passes through the center hole of the gear shaft (20) and extends into the inside of the disc cone shank (15). A cooling water pipe (10) is fixedly installed on the top of the guide beam (3). A heat insulation plate (12) is installed on the side of the guide beam (3) near the disc liner (4).

2. The novel hot-rolled pre-coiling gearbox-type wear-resistant disc side guide plate according to claim 1, characterized in that: The heat insulation plate (12) is equipped with a water receiving box inside, which is located below the cooling water pipe (10). The bottom of the cooling water pipe (10) has a water spray hole, and the heat insulation plate (12) has an arc-shaped groove inside that is compatible with the disc liner (4).

3. The novel hot-rolled pre-coiling gearbox-type wear-resistant disc side guide plate according to claim 1, characterized in that: The roller support beam (1) is equipped with a roller (2) on its side wall, and a transverse track is installed between the guide beam (3) and the roller (2).

4. A novel wear-resistant disc side guide plate for gearbox type before hot rolling coiling according to claim 1, characterized in that: The top of the socket-type gearbox (11) is equipped with a gearbox breather valve (7), the top of the cooling water pipe (10) is fixedly connected with a cooling water pipe inlet (8), and the top of the socket-type gearbox (11) is equipped with two lifting holes (9).

5. A novel wear-resistant disc side guide plate for gearbox type before hot rolling coiling according to claim 1, characterized in that: The guide beam (3) is fixedly connected to the inside of the side near the disc liner (4) with a front bearing support seat (13). The front bearing support seat (13) is equipped with a front bearing (14) that matches the disc cone shank (15). The guide beam (3) is fixedly connected to the inside of the side away from the disc liner (4) with a rear bearing support seat (16). The rear bearing support seat (16) is equipped with a rear bearing (17) that matches the gear shaft (20). Both the front bearing support seat (13) and the rear bearing support seat (16) are equipped with high-temperature sealing rings.

6. A novel wear-resistant disc side guide plate for gearbox type before hot rolling coiling according to claim 1, characterized in that: A washer (19) is provided at the connection between the screw (18) and the gear shaft (20). The transmission gear (23) meshes with the idler gear (24), and the idler gear (24) meshes with the gear shaft (20).

7. A novel wear-resistant disc side guide plate for gearbox type before hot rolling coiling according to claim 1, characterized in that: A transition plate (6) is installed on the side of the guide beam (3) near the disc liner (4). The edge of the transition plate (6) is thin. The disc liner (4) has no less than ten plastic parts. The transition plate (6) is located between two disc liners (4).

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