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

Abstract

The invention 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 the disc taper shank is fixedly connected to the output end of the hydraulic push rod. 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] The invention relates to the technical field of steel rolling, in particular to a novel hot rolling coiling front gear box type wear-resistant disc side guide plate. Background Art

[0002] In the hot rolling production process, after the strip comes out of the finishing mill, it runs into the coiler at a high speed. The front side guide of the coiler can adjust the opening degree to guide the strip to the center of the coiler for coiling around the coiling shaft, thereby improving the coil quality of the steel coil; it can make the strip enter the coiler smoothly along the prescribed path, effectively preventing the strip from forming defects such as tower shape and loose coils during coiling; by correcting the deviation, the strip tension can be prevented from suddenly changing. The wear-resistant liner can protect the base material of the side guide from the wear, corrosion and high temperature of the strip. In the hot rolling environment, the temperature of the strip is high, and there will be some impurities such as iron oxide. In addition, the high impact load of the high-speed steel belt on the liner will damage the base material of the side guide. The strip wear-resistant liner can isolate the base material of the side guide from these harmful factors to avoid damage to the base material, thereby reducing the maintenance and replacement cost of the side guide.

[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. The frequency of replacement of wear-resistant strip liners has increased, which has affected production and increased maintenance costs. The biggest problem is that thermal burrs accumulate in the friction grooves of the strip wear-resistant liners, which fall off the surface of the steel plate and are coiled, resulting in more and more quality objections in the next process.

[0004] The domestic patent "A side guide disc lining device" patent number "CN207929776U" adopts a wear-resistant disc and ratchet transmission method. The ratchet transmission of this invention is external, the disc is complicated to disassemble, and the disc is easily blocked after being subjected to bending moment force, and it cannot operate stably for a long time in a high temperature and high humidity environment;

[0005] The domestic patent "A side guide device with a rotating liner" patent number "CN105880300A" is complicated to disassemble the rotating liner. The locking nut of the rotating disc is lower than the surface of the disc and a pit appears. The irregular wave edge of the steel belt edge hits the pit and there is a risk of flying steel failure; the pit collides with the edge of the jumping steel plate and deforms, making it difficult to disassemble the tightening nut; there is a gap between the locking nut and the disc, which is easy to corrode and loosen in a high temperature, high humidity and high impact load environment; the sliding bearing is easy to be damaged when subjected to bending moment for a long time;

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

[0007] "Wear-resistant side guide plate of the front disc of hot rolling coiler" was published in the journal "First Heavy Industries Technology" Issue 4, 2023 (Total Issue 214). At the beginning of 2020, China First Heavy Industries independently developed a front disc wear-resistant side guide plate for the coiler on this basis, and applied it to the front side guide plate of a domestic 1250mm hot rolling coiler, realizing the localization of this technology and solving the technical difficulties of improving the service life of the liner in the steel industry; however, it is still difficult to promote it at present. The wear-resistant disc of this technology is connected to the rotating shaft by a pressure cover, and there is a gap between the pressure cover and the disc, which is easy to corrode and loosen under high temperature, high humidity and high load impact; this technology uses chain drive, and there are problems of low transmission accuracy and insufficient self-locking force. Therefore, a new type of hot rolling coiler front gearbox type wear-resistant disc side guide is urgently needed to solve the above problems. Summary of the invention

[0008] 1. Technical issues to be solved

[0009] In view of the deficiencies of the prior art, the present invention provides a novel hot rolling coiling front gear box type wear-resistant disc side guide plate.

[0010] (II) Technical solution

[0011] The technical solution of the present invention to solve the above technical problems is as follows: a new type of hot rolling coiling front gear box type wear-resistant disc side guide plate, including a roller support beam, a hydraulic push rod is installed on the side wall of the roller support beam, the output end of the hydraulic push rod is fixedly connected to the guide plate beam, the guide plate beam is internally installed with a socket plate type gear box, the top of the socket plate type gear box is fixedly installed with a reducer, the output shaft of the reducer is fixedly connected with a first bevel gear, the socket plate type gear box is internally rotatably connected with a rotating shaft, and the outside of the rotating shaft is fixedly connected with a gear meshing with the first bevel gear. The second bevel gear, one end of the rotating shaft away from the second bevel gear is fixedly connected with a transmission gear, a number of idler gears are mounted on the side wall of the socket plate type gear box, a disc cone handle is mounted inside the guide plate beam, a disc liner is connected to the outside of the disc cone handle by interference fit, a gear shaft is sleeved on the outside of the disc cone handle, a screw is connected to the internal thread of the gear shaft, the screw passes through the center hole of the gear shaft and extends to the inside of the disc cone handle, a cooling water pipe is fixedly installed on the top of the guide plate beam, and a heat insulation plate is mounted on the side of the guide plate beam close to the disc liner.

[0012] The beneficial effects of the present invention are:

[0013] This new type of hot-rolled coiling front gearbox-type wear-resistant disc side guide plate creatively designs a simple combination of a Morse taper hollow gear shaft, a disc with a Morse taper shank and high-strength connecting bolts. The pre-tightening force of the bolts is used to synthesize the integrated rotating body, so that the disc can be disassembled and installed with only one nut; the friction and clamping force between the conical surfaces can effectively resist the torque, so that the connected parts will not loosen during operation; the Morse taper is used to ensure that the rotation axis of the disc is highly coincident with the axis of the gear shaft, which greatly improves the disc's ability to resist bending moment and withstand radial impact loads; compared with ordinary cylindrical fits, the Morse taper connection method can provide higher rigidity when transmitting torque.

[0014] The new hot-rolled coiling front gearbox-type wear-resistant disc side guide plate takes into account the edge thickness and angle of the transition plate between the discs in detail, which can effectively prevent the discs from being stuck in the gaps due to the accumulation of sparks and burrs; the heat insulation plate with a water trough can effectively reduce the temperature rise of the guide plate body and the transmission system caused by heat radiation and heat conduction; high-load-bearing supports are designed at both ends of the gear shaft with sealing components to prevent debris and water from entering the bearings, thereby improving the durability of the transmission part.

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

[0016] Furthermore, a water receiving box is installed inside the insulation board, and the water receiving box is located below the cooling water pipe. A water sprinkling hole is opened at the bottom of the cooling water pipe. An arc groove adapted to the disc liner is opened inside the insulation board.

[0017] The beneficial effect of adopting the above further scheme is that water from the water sprinkling hole falls into the water receiving box, and when the water receiving box of the insulation board overflows, it flows downward from the surface of the insulation board to the surface of the disc, thereby cooling the disc and blocking and delaying the heat conduction and heat radiation of the high-temperature steel belt to the guide plate beam.

[0018] Furthermore, rollers are installed on the side walls of the roller support beam, and transverse tracks are installed between the guide beam and the drag rollers.

[0019] Furthermore, the top of the socket-type gearbox is equipped with a gearbox breathing valve, the top of the cooling water pipe is fixedly connected with a cooling water pipe inlet, and the top of the socket-type gearbox is equipped with two lifting holes.

[0020] The beneficial effect of adopting the above further scheme is that the original integrated design of the socket plate gearbox and the reducer can be installed in one step in the side guide beam through the lifting holes.

[0021] Furthermore, a front bearing support seat is fixedly connected to the interior of the guide plate beam close to the disc lining plate, and a front bearing matching the disc cone handle is assembled inside the front bearing support seat. A rear bearing support seat is fixedly connected to the interior of the guide plate beam away from the disc lining plate, and a rear bearing support seat is assembled inside the rear bearing matching the gear shaft. High-temperature sealing rings are arranged inside the front bearing support seat and the rear bearing support seat.

[0022] The beneficial effect of adopting the above further solution is to prevent metal debris and water from entering the bearing.

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

[0024] The beneficial effect of adopting the above further solution is that the sealing is ensured by providing a gasket.

[0025] Furthermore, a transition plate is installed on one side of the guide beam close to the disc lining plate, the edge of the transition plate is thin, the disc lining plate has no less than ten plastics, and the transition plate is located between two disc lining plates.

[0026] The beneficial effect of adopting the above further solution is that the transition plates between the wear-resistant discs are designed to have thin edges to prevent the steel plates from colliding with the edges of the steel plates and causing flying steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 is a cross-sectional view of the guide plate beam structure of the present invention;

[0029] Figure 3 It is a structural schematic diagram of the guide plate beam in the present invention;

[0030] Figure 4 It is a structural cross-sectional view of the socket plate type gearbox in the present invention;

[0031] Figure 5 It is a structural schematic diagram of the socket plate type gearbox in the present invention;

[0032] Figure 6 It is a schematic diagram of the structure of the second bevel gear in the present invention.

[0033] In the figure: 1. Roller support beam; 2. Roller; 3. Guide beam; 4. Disc lining plate; 5. Reducer; 6. Transition plate; 7. Gear box breathing valve; 8. Cooling water pipe inlet; 9. Lifting hole; 10. Cooling water pipe; 11. Socket plate type gear box; 12. Heat insulation board; 13. Front bearing support seat; 14. Front bearing; 15. Disc cone handle; 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. Idle gear. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the embodiment, Figure 1-6 A novel hot rolling coiling front gear box type wear-resistant disc side guide plate is provided, which includes a roller support beam 1, a hydraulic push rod is installed 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 roller 2 is installed on the side wall of the roller support beam 1, and a transverse track is installed between the guide plate beam 3 and the drag roller 2.

[0036] Specifically, refer to Figure 5 A socket plate type gear box 11 is assembled inside the guide plate beam 3, a reducer 5 is fixedly installed on the top of the socket plate type gear box 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 type gear box 11, a second bevel gear 22 meshing with the first bevel gear 21 is fixedly connected to the outside of the rotating shaft, a transmission gear 23 is fixedly connected to one end of the rotating shaft away from the second bevel gear 22, and a plurality of idle gears 24 are assembled on the side wall of the socket plate type gear box 11, and the transmission gear 23 meshes with the idle gear 24.

[0037] Specifically, refer to Figure 4The guide plate beam 3 is internally assembled with a disc cone handle 15, and the disc cone handle 15 is externally connected with a disc liner 4 through interference fit. The outer sleeve of the disc cone handle 15 is provided with a gear shaft 20, and the internal thread of the gear shaft 20 is connected with a screw rod, which passes through the center hole of the gear shaft 20 and extends to the inside of the disc cone handle 15. The idler gear 24 is meshed with the gear shaft 20. The disc liner 4 adopts a Morse taper cone handle and a Morse taper hole on the gear shaft 20, and is pre-tightened and fastened to the gear shaft 20 with high-strength bolts. In this way, the conical surface fit not only has high axial positioning accuracy; installation and disassembly are solved by only one nut; and it can withstand larger bending moments and larger 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 plate gear box 11 are connected to change the transmission direction, the torque is transmitted through the transmission gear 23 fixed on the gear plate of the socket plate gear box 11, and the wear-resistant disc 4 is rotated after passing through the idler gear 24, so that all the disc liners 4 rotate synchronously, but there is no need to rotate in one direction; the synchronously rotating wear-resistant discs have different directions, so when the wear-resistant discs are subjected to the friction force of the steel belt in one direction, they can play a role in locking the rotation with each other, and the wear resistance of the disc liners 4 is improved by laser cladding; the friction area is increased by rotating it to increase the service life; the friction groove of the disc is intermittent, and the self-cleaning function of sparks and burrs can be realized by changing the groove position through rotation.

[0039] Specifically, refer to Figure 4 A cooling water pipe 10 is fixedly installed on the top of the guide beam 3, and a heat insulation plate 12 is installed on the side of the guide beam 3 close to 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 sprinkling hole is opened at the bottom of the cooling water pipe 10, and an arc groove adapted to the disc liner 4 is opened inside the heat insulation plate 12.

[0040] In this embodiment, in actual use, water from the water holes falls into the water receiving box. After the insulation board water receiving box is overflowing, it flows downward from the surface of the insulation board to the surface of the disc lining plate 4, thereby cooling the disc lining plate 4 and blocking and delaying the heat conduction and heat radiation from the high-temperature steel belt to the guide plate beam 3.

[0041] Specifically, refer to Figure 5 The top of the spigot-and-socket type gearbox 11 is provided with a gearbox breathing 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 spigot-and-socket type gearbox 11 is provided with two lifting holes 9.

[0042] In this embodiment, in actual use, the original integrated design of the socket plate gearbox and the reducer can be installed in the side guide beam 3 at one time through the lifting hole 9. The sealing design ensures the lubrication of the gears and only requires regular inspection every two years, ensuring efficient and stable operation.

[0043] Specifically, refer to Figure 4 A front bearing support seat 13 is fixedly connected to the inside of the guide beam 3 near the disc liner 4, and a front bearing 14 matched with the disc cone handle 15 is assembled inside the front bearing support seat 13. A rear bearing support seat 16 is fixedly connected to the inside of the guide beam 3 away from the disc liner 4, and a rear bearing 17 matched with the gear shaft 20 is assembled inside the rear bearing support seat 16. High-temperature sealing rings are arranged inside the front bearing support seat 13 and the rear bearing support seat 16, and a gasket 19 is arranged at the connection between the screw 18 and the gear shaft 20, and the sealing is ensured by arranging the gasket 19.

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

[0045] Specifically, refer to Figure 3 A transition plate 6 is installed on one side of the guide beam 3 close to the disc lining plate 4. The edge of the transition plate 6 is thin. The plastic of the disc lining plate 4 is not less than ten. The transition plate 6 is located between two disc lining plates 4.

[0046] In this embodiment, in actual use, the transition plate 6 between the wear-resistant lining plates 4 is designed to have a thin edge to prevent the flying steel from colliding with the edge of the steel plate. The thinning of the end of the transition plate 6 allows sparks and burrs to be embedded even if they are naturally dropped due to the reduced contact area, thereby preventing the contact area from increasing and accumulating in the gap between the disc lining plate 4 and the transition plate 6, which then squeezes and restricts the rotation of the disc lining plate 4.

[0047] Working principle:

[0048] By utilizing the idle time between two coils of steel, that is, starting the reducer 5 after receiving the coiler stop signal, the reducer 5 has its own encoder that rotates an angle (for example, 7 degrees, 11 degrees, 13 degrees), so that the friction belt formed on the disc lining 4 never overlaps. After constantly changing the angle and being rubbed by the steel belt, an annular friction belt without deep grooves is formed on the surface of the laser clad alloy of the disc, thereby fully utilizing the expensive alloy area, extending the service life, reducing the maintenance frequency and achieving the purpose of reducing costs.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

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

Claims

1. A novel hot rolling coiling front gearbox type wear-resistant disc side guide plate, 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), the output end of the hydraulic push rod is fixedly connected to a guide plate beam (3), a spigot plate type gear box (11) is mounted inside the guide plate beam (3), a reducer (5) is fixedly installed on the top of the spigot plate type gear box (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 spigot plate type gear box (11), a second bevel gear (22) meshing with the first bevel gear (21) is fixedly connected to the outside of the rotating shaft, and a transmission gear (23) is fixedly connected to one end of the rotating shaft away from the second bevel gear (22), A plurality of idler gears (24) are mounted on the side wall of the socket plate type gear box (11); a disc cone handle (15) is mounted inside the guide plate beam (3); the disc cone handle (15) is connected to the disc lining plate (4) through interference fit on the outside; a gear shaft (20) is sleeved on the outside of the disc cone handle (15); a screw is connected to the inside of the gear shaft (20) through threads; the screw passes through the center hole of the gear shaft (20) and extends to the inside of the disc cone handle (15); a cooling water pipe (10) is fixedly mounted on the top of the guide plate beam (3); and a heat insulation plate (12) is mounted on the side of the guide plate beam (3) close to the disc lining plate (4).

2. According to claim 1, a new type of hot rolling coiling front gear box type wear-resistant disc side guide plate is characterized in that: The heat insulation board (12) is internally provided with a water receiving box, the water receiving box is located below the cooling water pipe (10), a water spraying hole is provided at the bottom of the cooling water pipe (10), and an arc groove matching the disc lining plate (4) is provided inside the heat insulation board (12).

3. According to claim 1, a new type of hot rolling coiling front gear box type wear-resistant disc side guide plate is characterized in that: A roller (2) is mounted on the side wall of the roller support beam (1), and a transverse track is mounted between the guide beam (3) and the drag roller (2).

4. According to claim 1, a new type of hot rolling coiling front gear box type wear-resistant disc side guide plate is characterized in that: The top of the spigot-type gearbox (11) is provided with a gearbox breathing 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 spigot-type gearbox (11) is provided with two lifting holes (9).

5. According to claim 1, a new type of hot rolling coiling front gear box type wear-resistant disc side guide plate is characterized in that: A front bearing support seat (13) is fixedly connected to the inside of the guide plate beam (3) on the side close to the disc liner (4), and a front bearing (14) matched with the disc cone handle (15) is installed inside the front bearing support seat (13). A rear bearing support seat (16) is fixedly connected to the inside of the guide plate beam (3) on the side away from the disc liner (4), and a rear bearing (17) matched with the gear shaft (20) is installed inside the rear bearing support seat (16). High-temperature sealing rings are provided inside the front bearing support seat (13) and the rear bearing support seat (16).

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

7. The novel hot rolling coiling front gear box type wear-resistant disc side guide plate according to claim 1 is characterized by: A transition plate (6) is installed on one side of the guide beam (3) close to the disc lining plate (4), the edge of the transition plate (6) is thin, the disc lining plate (4) has no less than ten plastics, and the transition plate (6) is located between two disc lining plates (4).

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