Automatic clutch of the screwdown device of the universal rolling mill

Abstract

The present invention provides an automatic clutch for a universal rolling mill press-down device, which is arranged on the operating side of a horizontal press-down device. The horizontal press-down device comprises a motor, a gear 1, a spline sleeve 1, a spline shaft 1, a coupling, a spline shaft 2, a spline sleeve 2, an automatic clutch, and a gear 2, which are sequentially connected from the transmission side to the operating side. The gear 1 is connected to the press-down box on the transmission side, and the gear 2 is connected to the press-down box on the operating side. The automatic clutch controls the connection between the spline sleeve 2 and the gear 2. The disconnection and connection between the press-down box on the operating side and the press-down box on the transmission side of the horizontal roller horizontal press-down device of the present invention are controlled by hydraulic pressure, which improves the degree of automation, overcomes the shortcomings of the prior art, and saves time and effort.

Description

Technical Field

[0001] The invention belongs to the field of rolling mills, and particularly relates to an automatic clutch for a universal rolling mill screwdown device. Background Art

[0002] Hot-rolled sections are widely used due to their excellent mechanical properties in fields such as civil construction, industrial construction, bridge construction, petroleum industry, high-rise buildings, subway tunnels, mine roadways, and industrial steel structures. With the rapid development of China's economy, the demand for the output and quality of sections is increasing day by day, and higher requirements are placed on section production lines. Along with the wide application of H-sections in various fields, H-section rolling mills are gradually developing and improving, evolving from the original portal universal rolling mills to the current connecting plate universal rolling mills, short stress line universal rolling mills, and prestressed universal rolling mills. These rolling mills have higher stiffness compared to the previous universal rolling mills and can roll H-sections with better mechanical properties, more economical, thinner, and lighter.

[0003] With the development of rolling technology, the requirements for the automation of the rolling process are getting higher and higher. The short stress line universal rolling mill is one of the most widely used high-strength universal rolling mills. As shown in Figure 1 it includes a horizontal screwdown device 1, a roll assembly device 2, a bracket assembly device 3, a vertical roll side pressing device 4, and a transverse trolley assembly 5. When this rolling mill is rolling, the roll gap adjustment of the horizontal rolls is completed by the horizontal roll horizontal screwdown device 1. If the upper and lower horizontal rolls are not parallel during installation or rolling, it is necessary to adjust one side of the rolls. It is necessary to disconnect the drive side and the operating side screwdown boxes of the horizontal roll horizontal screwdown device 1, adjust the rolls to be parallel, and then connect them. Currently, the operating side screwdown box and the drive side screwdown box of the horizontal roll horizontal screwdown device 1 of the universal rolling mill are connected by a coupling. When adjustment is required, it is necessary to manually open the coupling. The coupling is located at the top of the entire rolling mill, and people need to climb up for disassembly and assembly. This is not only dangerous but also time-consuming, affecting the production rhythm. Summary of the Invention

[0004] In view of this, the present invention aims to propose an automatic clutch for a universal rolling mill screwdown device. When adjusting the non-parallelism of the horizontal rolls of the rolling mill, it is necessary to manually disassemble the coupling for adjustment, which is highly dangerous and time-consuming, affecting production.

[0005] To achieve the above object, the technical solution of the present invention is realized as follows:

[0006] The automatic clutch of the universal rolling mill's press-down device is arranged on the operating side of the horizontal press-down device. The horizontal press-down device includes a motor, gear one, spline sleeve one, spline shaft one, a coupling, spline shaft two, spline sleeve two, an automatic clutch, and gear two, which are sequentially connected from the transmission side to the operating side. The gear one is connected to the press-down box on the transmission side, the gear two is connected to the press-down box on the operating side, and the automatic clutch controls the connection between the spline sleeve two and the gear two.

[0007] Furthermore, the automatic clutch comprises a torsion bar sleeved on the outside of the second spline sleeve, one end of the torsion bar passes through the side wall of the operating side pressure box and is connected to the second gear through an end face key, the operating side pressure box is provided with a through hole corresponding to the torsion bar, and the other end of the torsion bar is fixed with a bearing seat structure;

[0008] A hydraulic structure is arranged between the bearing seat structure and the outer side wall of the operating side pressure box having a through hole, and the hydraulic structure is provided with a piston for pushing the torsion bar to connect and separate with the second gear.

[0009] Furthermore, the bearing seat structure includes a screw baffle, a bearing, and a bearing seat. The baffle is fixed to the end of the torsion bar away from gear two by bolt two, and the baffle is fixed to the bearing seat near the outer edge of the torsion bar side. The inner side of the bearing seat is rotatably connected to the outer side of the piston near the baffle by setting a bearing.

[0010] Furthermore, the torsion bar is sleeved on the outside of the spline sleeve, and the torsion bar is connected to the spline sleeve via key 2, and key 2 is a long key.

[0011] Furthermore, the hydraulic structure also includes an end cover, a key 1, a bolt 3, and a cylinder sleeved on the outside of the piston. The end cover is fixedly connected to a side wall of the operating side pressure box having a through hole, and one end of the cylinder close to the end cover is fixedly connected to the end cover.

[0012] The piston comprises a circular sleeve sleeved on the outside of the torsion bar, a convex ring is arranged in the middle of the outer side of the circular sleeve, a key is arranged between the inner ring of the end cover and the outer wall of the circular sleeve, the outer diameter of the convex ring corresponds to the inner diameter of the cylinder, the inner wall of the cylinder near one end of the bearing seat extends inward to form a limiting ring, the cylinder is provided with an L-shaped oil circuit corresponding to the limiting ring, one end of the L-shaped oil circuit opens toward the outside of the cylinder to form an oil port B, and the other end opens toward the convex ring, and a hydraulic chamber is formed between the side of the limiting ring close to the convex ring and the side of the convex ring close to the limiting ring;

[0013] The end cover is fixed with a cylinder corresponding to the convex ring, the outer diameter of the cylinder corresponds to the inner diameter of the cylinder, and the inner diameter of the cylinder corresponds to the outer diameter of the sleeve. An L-shaped oil circuit 2 is opened on the end cover, and one end of the L-shaped oil circuit 2 opens toward the outer side of the end cover to form an oil port A, and the other end is opened at one end of the cylinder close to the convex ring, and a hydraulic chamber 2 is formed between the side of the cylinder close to the convex ring and the side of the convex ring close to the cylinder.

[0014] Further, a sealing ring is arranged on the inner side wall of the cylinder corresponding to the outer side wall of the circular sleeve, a sealing ring is arranged on the outer side wall of the convex ring corresponding to the inner wall of the cylinder barrel, and a sealing ring is arranged on the inner side wall of the limiting ring corresponding to the outer side wall of the circular sleeve.

[0015] Further, an oil cup is arranged on the baffle corresponding to the bearing, lubricating oil is arranged in the oil cup, and dust-proof rings are arranged on the bearing seat corresponding to the near end face of the cylinder barrel and on the inner side wall of the limiting ring corresponding to the outer side wall of the circular sleeve.

[0016] Compared with the prior art, the automatic clutch of the universal rolling mill screw down device of the present invention has the following beneficial effects:

[0017] (1) For the horizontal roll horizontal screw down device of the present invention, the disconnection and connection between the operating side screw down box and the drive side screw down box are controlled hydraulically, improving the degree of automation, overcoming the deficiencies of the prior art, and saving time and effort.

[0018] (2) The torsion bar and the second gear of the present invention are connected and separated through end face keys, which can transmit greater torque, can also achieve stepless engagement, and do not require adjustment when the two are connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0020] Figure 1 is the overall structure diagram of the universal rolling mill according to the embodiment of the present invention;

[0021] Figure 2 is the schematic diagram of the horizontal screw down device according to the embodiment of the present invention;

[0022] Figure 3 is the transmission diagram of the connection force between the automatic clutch and the second gear according to the embodiment of the present invention;

[0023] Figure 4 is the transmission diagram of the disconnection force between the automatic clutch and the second gear according to the embodiment of the present invention;

[0024] Figure 5 is the structure diagram of the automatic clutch according to the embodiment of the present invention;

[0025] Figure 6 is the connection structure diagram between the automatic clutch and the second gear according to the embodiment of the present invention;

[0026] Figure 7 is the disconnection structure diagram between the automatic clutch and the second gear according to the embodiment of the present invention.

[0027] Description of the reference numerals:

[0028] 1 - Horizontal rolling device; 11 - Motor; 12 - Gear 1; 121 - Drive side rolling box; 13 - Spline sleeve 1; 14 - Spline shaft 1; 15 - Coupling; 16 - Spline shaft 2; 17 - Spline sleeve 2; 18 - Gear 2; 181 - Operating side rolling box; 19 - Automatic clutch; 191 - End cover; 1911 - Dust seal; 1912 - Torsion bar; 1913 - Sealing ring; 1914 - Key 2; 1915 - Bolt 3; 1916 - Bolt 4; 1917 - Oil port A; 192 - Key 1; 193 - Cylinder barrel; 1931 - Oil port B; 194 - Piston; 1941 - Round sleeve; 1942 - Convex ring; 195 - Bolt 1; 196 - Oil cup; 197 - Baffle; 198 - Bolt 2; 199 - Bearing; 1991 - Bearing seat; 2 - Roll assembly device; 3 - Bracket assembly device; 4 - Vertical roll side pressing device; 5 - Transverse trolley assembly. Detailed implementation mode

[0029] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0032] The present invention will be described in detail below with reference to the drawings and in combination with embodiments.

[0033] Such asFigures 2 to 4 As shown, the automatic clutch of the universal rolling mill press-down device is arranged on the operating side of the horizontal press-down device 1, and the horizontal press-down device 1 includes a motor 11, a gear 12, a spline sleeve 13, a spline shaft 14, a coupling 15, a spline shaft 2 16, a spline sleeve 2 17, an automatic clutch 19, and a gear 2 18, which are sequentially connected from the transmission side to the operating side. The gear 12 is connected to the press-down box on the transmission side, and the gear 2 18 is connected to the press-down box on the operating side. The automatic clutch 19 controls the connection between the spline sleeve 2 17 and the gear 2 18.

[0034] The adjustment of the roll gap is achieved by transmitting the torque to gear 12 through motor 11, and gear 12 transmits the torque to the transmission side pressure box. The spline sleeve 13 is connected to gear 12, and the torque is transmitted to the spline shaft 14 through the spline sleeve 13. The spline shaft 14 and the spline shaft 2 16 are connected through the coupling 15, and the torque is transmitted from the spline shaft 2 16 to the spline sleeve 2 17. The spline sleeve 2 17 and the automatic clutch are connected through a key. When the automatic clutch is connected to the gear, the torque of the spline sleeve 2 17 is transmitted from the automatic clutch to the gear 2 18, so that the torque is transmitted to the operating side pressure box through the gear 2 18. This is the synchronous action of the transmission side pressure box and the operating side pressure box. When the automatic clutch is disconnected from the gear 2 18, the torque cannot be transmitted to the gear 2 18 through the automatic clutch. At this time, only the transmission side pressure box can move, and the operating side pressure box cannot move without the transmission inside, so that the single-sided adjustment of the roller is realized.

[0035] like Figures 2 to 7 As shown, the automatic clutch 19 includes a torsion bar 1912 sleeved on the outside of the spline sleeve 17, one end of the torsion bar 1912 passes through the side wall of the operating side pressing box and is connected to the gear 18 through the end face key, the operating side pressing box is provided with a through hole corresponding to the torsion bar 1912, and the other end of the torsion bar 1912 is fixed with a bearing seat structure;

[0036] A hydraulic structure is arranged between the bearing seat structure and the outer wall of the operating side pressure box having a through hole. The hydraulic structure is provided with a piston 194 that pushes the torsion bar 1912 to connect and separate with the gear 2 18.

[0037] The torsion bar 1912 and the gear 2 18 are connected by an end face key, which can transmit a larger torque and realize a stepless connection without adjustment when the two are connected.

[0038] like Figures 2 to 7As shown, the bearing seat structure includes a screw baffle 197, a bearing 199, and a bearing seat 1991. The baffle 197 is fixedly connected to one end of the torsion bar 1912 away from the second gear 18 by a second bolt 198. The bearing seat 1991 is fixedly connected to the outer edge near the side of the baffle 197 close to the torsion bar 1912. The inner side of the bearing seat 1991 and the outer side of the piston 194 close to the baffle 197 are rotatably connected by arranging a bearing 199.

[0039] The baffle 197 is fixedly connected to the torsion bar 1912 by a second bolt 198, and the baffle 197 is fixedly connected to the bearing seat 1991 by a first bolt 195.

[0040] As Figures 2 to 7 shown, the torsion bar 1912 is sleeved outside the spline sleeve. The torsion bar 1912 is connected to the spline sleeve by a second key 1914, and the second key 1914 is a long key.

[0041] The second key 1914 is set as a long key. On the one hand, it can transmit a greater torque, and on the other hand, it can be used as a guiding key so that the torsion bar 1912 will not deviate during movement.

[0042] As Figures 2 to 7 shown, the hydraulic structure further includes an end cover 191, a first key 192, a third bolt 1915, and a cylinder barrel 193 sleeved outside the piston 194. The end cover 191 is fixedly connected to the side wall of the operation side pressing box where a through hole is provided. One end of the cylinder barrel 193 close to the end cover 191 is fixedly connected to the end cover 191.

[0043] The piston 194 includes a round sleeve 1941 sleeved outside the torsion bar 1912. A convex ring 1942 is arranged in the middle of the outer side of the round sleeve 1941. A first key 192 is arranged between the inner ring of the end cover and the outer side wall of the round sleeve 1941. The outer diameter of the convex ring 1942 corresponds to the inner diameter of the cylinder barrel 193. The inner side wall of one end of the cylinder barrel 193 close to the bearing seat 1991 extends inward to form a limiting ring. The cylinder barrel 193 is provided with an L-shaped oil passage one corresponding to the limiting ring. One end of the L-shaped oil passage opens towards the outside of the cylinder barrel 193 to form an oil port B 1931, and the other end opens towards the convex ring 1942. A hydraulic cavity one is formed between one side of the limiting ring close to the convex ring 1942 and one side of the convex ring 1942 close to the limiting ring.

[0044] A cylinder is fixedly arranged on the end cover 191 corresponding to the convex ring 1942. The outer diameter of the cylinder corresponds to the inner diameter of the cylinder barrel 193, and the inner diameter of the cylinder corresponds to the outer diameter of the round sleeve 1941. An L-shaped oil passage two is opened on the end cover 191. One end of the L-shaped oil passage two opens towards the outer side of the end cover to form an oil port A 1917, and the other end is opened at one end of the cylinder close to the convex ring 1942. A hydraulic cavity two is formed between one side of the cylinder close to the convex ring 1942 and one side of the convex ring 1942 close to the cylinder.

[0045] A key is provided between the end cap 191 and the piston 194 so that the piston 194 will not rotate together with the torsion bar 1912, making the structure more stable. The end cap 191 and the side wall of the operation side press-down box 181 where the through hole is provided are fixedly connected by bolt four 1916, and the end cap and the cylinder barrel 193 are fixedly connected by bolt three 1915.

[0046] As Figures 2 to 7 shown, a sealing ring 1913 is provided on the inner side wall of the cylinder corresponding to the outer side wall of the round sleeve 1941, a sealing ring 1913 is provided on the outer side wall of the convex ring 1942 corresponding to the inner wall of the cylinder barrel 193, and a sealing ring 1913 is provided on the inner side wall of the limiting ring corresponding to the outer side wall of the round sleeve 1941.

[0047] As Figures 2 to 7 shown, an oil cup 196 is provided for the baffle 197 corresponding to the bearing 199, lubricating oil is provided in the oil cup 196, and dust-proof rings 1911 are provided on the end face of the cylinder barrel 193 near one end corresponding to the bearing seat 1991 and on the inner side wall of the limiting ring corresponding to the outer side wall of the round sleeve 1941.

[0048] The dust-proof ring 1911 prevents external water, dust, etc. from entering this structure, maintaining smooth and stable sliding connection inside.

[0049] Working process:

[0050] As Figures 2 to 7 shown, when the upper and lower horizontal rolls of the rolling mill are not parallel during rolling, separate adjustments are required on the drive side and the operation side. At this time, oil port A 1917 is supplied with oil, pushing the piston 194 to the other side. The piston 194 drives the bearing seat structure and the torsion bar 1912 to move outward, disconnecting from gear two 18. At this time, there is no torque transmitted from the drive side on gear two 18, and there is no torque on the operation side press-down box. In this way, only the drive side press-down box can be adjusted while the operation side press-down box cannot be adjusted, achieving separate adjustment. When the upper and lower horizontal rolls are adjusted to be parallel, oil port B 1931 is supplied with oil to push the piston 194 to the other side. The piston 194 drives the above-mentioned bearing seat structure and the torsion bar 1912 to move inward. The torsion bar 1912 is connected to gear two 18, so that the drive side press-down box and the operation side press-down box are connected together, achieving synchronous rotation.

[0051] Through the invention of this structure, when the upper and lower horizontal rolls are not parallel, problems such as the operation danger of manually climbing onto the rolling mill to manually open the coupling 15, affecting the production rhythm, and being time-consuming and laborious are solved, improving the rolling efficiency and the automation of the rolling process.

[0052] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. Automatic clutch for the screw down device of a universal rolling mill, characterized in that: The horizontal pressing device (1) is arranged on the operating side of the horizontal pressing device (1), and the horizontal pressing device (1) comprises a motor (11), a gear 1 (12), a spline sleeve 1 (13), a spline shaft 1 (14), a coupling (15), a spline shaft 2 (16), a spline sleeve 2 (17), an automatic clutch (19), and a gear 2 (18) which are sequentially connected in transmission from the transmission side to the operating side, wherein the gear 1 (12) is connected in transmission with the pressing box (121) on the transmission side, the gear 2 (18) is connected in transmission with the pressing box (181) on the operating side, and the automatic clutch (19) controls the connection between the spline sleeve 2 (17) and the gear 2 (18); The automatic clutch (19) comprises a torsion bar (1912) sleeved on the outside of the second spline sleeve (17); one end of the torsion bar (1912) passes through the side wall of the operating side pressure box (181) and is connected to the second gear (18) through an end face key; the operating side pressure box (181) is provided with a through hole corresponding to the torsion bar (1912); and the other end of the torsion bar (1912) is fixedly provided with a bearing seat structure; A hydraulic structure is provided between the bearing seat structure and the outer side wall of the operating side pressure box provided with a through hole, and the hydraulic structure is provided with a piston (194) for pushing the torsion bar (1912) to connect and separate with the second gear (18); The bearing seat structure comprises a baffle (197), a bearing (199), and a bearing seat (1991); the baffle (197) is fixed to an end of a torsion bar (1912) away from gear 2 (18) via a second bolt (198); a side of the baffle (197) close to the torsion bar (1912) is fixedly connected to the bearing seat (1991) near the outer edge; an inner side of the bearing seat (1991) is rotatably connected to an outer side of the piston (194) close to the baffle (197) via a bearing (199); The hydraulic structure further comprises an end cover (191), a key 1 (192), a bolt 3 (1915), and a cylinder barrel (193) sleeved on the outside of the piston (194); the end cover is fixedly connected to a side wall of the operating side pressure box having a through hole; an end of the cylinder barrel (193) close to the end cover is fixedly connected to the end cover (191). The piston (194) comprises a circular sleeve (1941) sleeved on the outside of the torsion bar (1912), a convex ring (1942) is arranged in the middle of the outside of the circular sleeve (1941), a key (192) is arranged between the inner ring of the end cover (191) and the outer wall of the circular sleeve (1941), the outer diameter of the convex ring (1942) corresponds to the inner diameter of the cylinder (193), the inner wall of one end of the cylinder (193) adjacent to the bearing seat (1991) extends inward to form a limiting ring, and the cylinder (193) is provided with an L-shaped oil circuit (193) corresponding to the limiting ring, one end of the L-shaped oil circuit opens toward the outside of the cylinder (193) to form an oil port B (1931), and the other end opens toward the convex ring (1942), and a hydraulic chamber (1942) is formed between the side of the limiting ring close to the convex ring (1942) and the side of the convex ring (1942) close to the limiting ring; The end cover (191) is fixedly provided with a cylinder corresponding to the convex ring (1942). The outer diameter of the cylinder corresponds to the inner diameter of the cylinder barrel (193), and the inner diameter of the cylinder corresponds to the outer diameter of the round sleeve (1941). An L-shaped oil passage II is opened on the end cover (191). One end of the L-shaped oil passage II is opened towards the outer side surface of the end cover (191) to form an oil port A (1917), and the other end is opened at one end of the cylinder close to the convex ring (1942). A hydraulic chamber II is formed between one side of the cylinder close to the convex ring (1942) and one side of the convex ring (1942) close to the cylinder.

2. The automatic clutch of the universal rolling mill screwdown device according to claim 1, characterized in that: The torsion bar (1912) is sleeved outside the spline sleeve II (17), and the torsion bar (1912) is connected to the spline sleeve II (17) through a key II (1914), and the key II (1914) is a long key.

3. The automatic clutch of the universal rolling mill screwdown device according to claim 1, characterized in that: Sealing rings (1913) are arranged on the inner side wall of the cylinder corresponding to the outer side wall of the round sleeve (1941), sealing rings (1913) are arranged on the outer side wall of the convex ring (1942) corresponding to the inner wall of the cylinder barrel (193), and sealing rings (1913) are arranged on the inner side wall of the limiting ring corresponding to the outer side wall of the round sleeve (1941).

4. The automatic clutch of the universal rolling mill screwdown device according to claim 3, characterized in that: A grease cup (196) is arranged on the baffle (197) corresponding to the bearing (199), lubricating oil is arranged in the grease cup (196), and dust-proof rings (1911) are arranged on the bearing seat (1991) corresponding to the end face of the cylinder barrel (193) close to one end and on the inner side wall of the limiting ring corresponding to the outer side wall of the round sleeve (1941).

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