New short stress tie rod prestressed universal rolling mill

Abstract

The invention provides a new type of short stress tie rod prestressed universal rolling mill, including a vertical roller beam, an upper horizontal roller system, a lower horizontal roller system, a vertical roller, a hydraulic assembly, a tie rod, and a trolley. A vertical roller beam is fixed on the top of the trolley. The horizontal roller system is installed on the vertical roller beam through a bearing seat. The upper horizontal roller system and the lower horizontal roller system are arranged in parallel. Both ends of each bearing seat extend to both sides to form a mounting block. A hydraulic assembly is installed on each mounting block corresponding to the upper horizontal roller system. Through holes corresponding to the tie rod are opened on the mounting block and the vertical roller beam. The tie rod passes through the hydraulic assembly, the mounting block corresponding to the upper horizontal roller system, the vertical roller beam, and the mounting block corresponding to the lower horizontal roller system in sequence through the through hole. A pressure plate for supporting the lower horizontal roller system is fixed at the bottom of the tie rod through a locking pin. The new type of short stress tie rod prestressed universal rolling mill described in the invention solves the problems that there is still a certain gap between the various components of the existing short stress rolling mill, the compaction effect is not good, the roll changing efficiency is low, and it is not convenient to disassemble and assemble.

Description

Technical Field

[0001] The invention belongs to the technical field of universal rolling mills, and in particular relates to a novel short stress tie rod prestressed universal rolling mill. Background Art

[0002] Traditional short stress rolling mills are divided into two types: Danieli and Pomini. Their structures are mostly balanced by balancing nuts, clamping nuts, spherical pads, and elastic damping bodies. According to the balancing principle, the balancing nut is closely matched with the column thread. The balancing force of the elastic damping body comes from the balancing nut, which acts on the bearing end cover to lift the entire weight of the bearing seat. The force is transmitted upward from the lower part of the bearing seat to the spherical pad, so that there is a lower gap between the clamping nut and the screw, reducing the gap between the pressing screw and the screw. There is still a certain gap between the various components of the existing short stress rolling mill, the clamping effect is not good, and the roll changing efficiency is low, which is not convenient for disassembly and assembly. Summary of the invention

[0003] In view of this, the present invention proposes a new type of short stress tie rod prestressed universal rolling mill to solve the problems of existing short stress rolling mills, such as certain gaps between various components, poor clamping effect, low roll changing efficiency, and inconvenient disassembly and assembly.

[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:

[0005] The new type of short stress tie rod prestressed universal rolling mill includes an upper horizontal roll system, a lower horizontal roll system, a vertical roll assembly, a hydraulic component, a tie rod, and a trolley. A vertical roll beam is fixed on the top of the trolley. There are two vertical roll assemblies, which are relatively installed on the inner side of the vertical roll beam. The lower horizontal roll system is installed on the lower part of the vertical roll beam through a bearing seat, and the upper horizontal roll system is installed on the upper part of the vertical roll beam through a bearing seat. The upper horizontal roll system and the lower horizontal roll system are arranged in parallel, and both ends of each bearing seat extend to both sides to form a mounting block. Each mounting block corresponding to the upper horizontal roll system A hydraulic component is installed on each mounting block, and there are multiple pull rods, all of which are set on the vertical roller beam and correspond to the mounting blocks on both sides of the horizontal roller system respectively. Through holes corresponding to the pull rods are opened on the mounting blocks and the vertical roller beam. The pull rods pass through the hydraulic component, the mounting block corresponding to the upper horizontal roller system, the vertical roller beam, and the mounting block corresponding to the lower horizontal roller system in sequence through the through holes. A pressure plate for supporting the lower horizontal roller system is fixed to the bottom of the pull rod by a locking pin. A pressing component for adjusting the upper horizontal roller system and the lower horizontal roller system is also installed on the vertical roller beam.

[0006] Furthermore, the hydraulic assembly includes a locking cylinder and a locking nut. The locking cylinder is installed on a fixed block corresponding to the upper horizontal roller system. The locking nut is arranged on the upper part of the locking cylinder. The pull rod passes through the locking cylinder and the locking nut. The pull rod is provided with a threaded portion. The pull rod is threadedly connected to the locking nut through the threaded portion, and the locking nut is pressed on the locking cylinder.

[0007] Furthermore, the vertical roller beam includes a cross bar and a side bar. The side bar is arranged parallel to the horizontal roller system. A cross bar is connected between the same ends of the two side bars. A vertical roller assembly is installed on the inner side of each cross bar. The top of the side bar is connected to the bearing seat. A mounting piece is fixed to the outer side of the side bar. The side bar is connected to the trolley through the mounting piece. A through hole corresponding to the pull rod is opened on the side bar, and the pull rod passes through the through hole.

[0008] Furthermore, the pressing assembly includes a pulling beam and a pressing nut. There are four pulling beams. The upper and lower parts of each side rod are connected to the pulling beam by bolts. The pulling beam is arranged in parallel with the side rod. The pulling beam located on the vertical roller beam is arranged at the bottom of the mounting block. The pulling rod runs through the pulling beam. A pressing nut is fixed on the pulling beam. A threaded hole corresponding to the pressing nut is opened on the pulling beam. The pressing nut is threadedly connected to the pulling beam through the threaded hole. A pressing device for driving its rotation is connected to the top of the pulling rod, and the bottom of the pulling rod is spaced apart from the trolley.

[0009] Furthermore, a retaining ring is fixed on the pull rod at a position inside the side rod, and a groove corresponding to the retaining ring is opened on the side rod, and the retaining ring is arranged in the groove.

[0010] Furthermore, a keyway is provided on the pull rod, a key corresponding to the keyway is provided on the inner side of the press-down nut, and the press-down nut is key-connected to the pull rod.

[0011] Furthermore, it also includes a ground plate, slide rails are installed on both sides of the ground plate, and a slider corresponding to the slide rail is provided at the bottom of the trolley. The trolley is slidably connected to the slide rail, and the slide rail is arranged in parallel with the upper horizontal roller system. One end of the upper horizontal roller system and the lower horizontal roller system are connected to a universal joint, and a shaft connecting bracket for supporting the universal joint is also installed at the end of the slide rail close to the universal joint, and a roller changing assembly is installed on the side of the shaft connecting bracket away from the trolley.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] (1) The novel short stress tie rod prestressed universal rolling mill created by the present invention has a tie rod that penetrates the hydraulic assembly, the bearing seat, the tie rod, and the vertical roller beam. The operation is simple and convenient, and each structural part can be quickly disassembled. The rollers can be quickly changed while the overall compression can be achieved.

[0014] (2) The roller opening degree can be adjusted by adjusting the distance between the upper and lower nuts of the clamping nut.

[0015] (3) Prestress is applied through the hydraulic locking cylinder to eliminate the gaps in the roller bearing seat, clamping nut, vertical roller assembly beam, etc., and prestress is applied to the tie rod to increase the stiffness of the short stress rolling mill.

[0016] (4) The prestress applied by the hydraulic assembly is mechanically locked by the locking nut on the hydraulic locking cylinder to achieve the effect of prestress mechanical locking. The prestress applied to the tie rod by the hydraulic locking cylinder increases the rigidity of the rolling mill, ensures that the pre-positioning roll gap position of the rolling mill remains unchanged, and ensures the rolling accuracy.

[0017] (5) The clamping nut is installed in the vertical roller beam. The key installed on the tie rod drives the clamping nut to rotate on the beam to achieve simultaneous symmetrical adjustment. The roller bearing seat is directly seated on the clamping nut. The tie rod is tightened by the prestressed hydraulic cylinder to achieve rolling requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of a novel short stress tie rod prestressed universal rolling mill according to an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of a novel short stress tie rod prestressed universal rolling mill according to an embodiment of the present invention;

[0021] Figure 3 A schematic cross-sectional view of a novel short stress tie rod prestressed universal rolling mill according to an embodiment of the present invention;

[0022] Figure 4 A schematic side view of a novel short stress tie rod prestressed universal rolling mill according to an embodiment of the present invention;

[0023] Figure 5 A schematic diagram of the pull rod, vertical roller assembly, and vertical roller beam described in the embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the pull rod, the clamping nut, and the vertical roller beam described in the embodiment of the present invention;

[0025] Figure 7 A schematic diagram of a shaft-connecting bracket according to an embodiment of the present invention;

[0026] Figure 8 It is a front view schematic diagram of a novel short stress tie rod prestressed universal rolling mill described in an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1. Trolley; 11. Anchor plate; 12. Slide rail; 13. Locking nut; 14. Keyway; 17. Vertical roller assembly; 2. Lower horizontal roller system; 3. Upper horizontal roller system; 31. Bearing seat; 32. Mounting block; 4. Vertical roller beam; 41. Cross bar; 42. Side bar; 43. Mounting piece; 5. Pull beam; 6. Roller changing assembly; 61. Support seat; 62. Roller changing hydraulic cylinder; 7. Shaft bracket; 71. U-shaped frame; 72. Card plate; 73. Support bar; 74. Screw; 8. Pull rod; 81. Retaining ring; 82. Pressing nut; 83. Pressure plate; 84. Locking pin; 9. Hydraulic assembly; 91. Locking cylinder; 92. Locking nut; 10. Pressing device. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 cannot be understood as a limitation on 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 number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0031] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.

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

[0033] like Figures 1 to 4As shown, the novel short stress tie rod prestressed universal rolling mill comprises an upper horizontal roll system 3, a lower horizontal roll system 2, a vertical roll assembly 17, a hydraulic assembly 9, a tie rod 8, and a trolley 1. A vertical roll beam 4 is fixed on the top of the trolley 1. There are two vertical roll assemblies 17, which are relatively mounted on the inner side of the vertical roll beam 4. The lower horizontal roll system 2 is mounted on the lower part of the vertical roll beam 4 through a bearing seat 31, and the upper horizontal roll system 3 is mounted on the upper part of the vertical roll beam 4 through a bearing seat 31. The upper horizontal roll system 3 and the lower horizontal roll system 2 are arranged in parallel, and both ends of each bearing seat 31 extend to both sides to form a mounting block 32, each corresponding to the upper horizontal roll system 3. A hydraulic component 9 is installed on each mounting block 32, and there are multiple pull rods 8, all of which are arranged on the vertical roller beam 4, corresponding to the mounting blocks 32 on both sides of the horizontal roller system respectively. Through holes corresponding to the pull rods 8 are opened on the mounting blocks 32 and the vertical roller beam 4. The pull rods 8 pass through the hydraulic component 9, the mounting blocks 32 corresponding to the upper horizontal roller system 3, the vertical roller beam 4, and the mounting blocks 32 corresponding to the lower horizontal roller system 2 in sequence through the through holes. A pressure plate 83 for supporting the lower horizontal roller system 2 is fixed to the bottom of the pull rod 8 by a locking pin 84. A pressing component for adjusting the upper horizontal roller system 3 and the lower horizontal roller system 2 is also installed on the vertical roller beam 4.

[0034] like Figures 1 to 4 As shown, the hydraulic assembly 9 includes a locking cylinder 91 and a locking nut 92. The locking cylinder 91 is installed on a fixed block corresponding to the upper horizontal roller system 3. The locking nut 92 is arranged on the upper part of the locking cylinder 91. The pull rod 8 passes through the locking cylinder 91 and the locking nut 92. The pull rod 8 is provided with a threaded portion. The pull rod 8 is threadedly connected to the clamping nut 13 through the threaded portion, and the clamping nut 13 is clamped on the locking cylinder 91.

[0035] like Figure 1 to Figure 2 As shown, the vertical roller beam 4 includes a cross bar 41 and a side bar 42. The side bar 42 is arranged parallel to the horizontal roller system. A cross bar 41 is connected between the same ends of the two side bars 42. A vertical roller assembly 17 is installed on the inner side of each cross bar 41. The top of the side bar 42 is connected to the bearing seat 31. The outer side of the side bar 42 is fixed with a mounting member 43. The side bar 42 is connected to the trolley 1 through the mounting member 43. A through hole corresponding to the pull rod 8 is opened on the side bar 42, and the pull rod 8 passes through the side bar 42 through the through hole.

[0036] like Figure 1 , Figure 2 , Figure 6As shown, the pressing assembly includes a tension beam 5 and a pressing nut 82. There are four tension beams 5. The upper and lower parts of each side rod 42 are connected to the tension beam 5 by bolts. The tension beam 5 is arranged in parallel with the side rod 42. The tension beam 5 located on the vertical roller beam 4 is arranged at the bottom of the mounting block 32. The tension rod 8 passes through the tension beam 5. The tension beam 5 is fixed with a pressing nut 82. The tension beam 5 is provided with a threaded hole corresponding to the pressing nut 82. The pressing nut 82 is threadedly connected to the tension beam 5 through the threaded hole. The top of the tension rod 8 is connected with a pressing device 10 for driving the rotation thereof. The bottom of the tension rod 8 is spaced apart from the trolley 1. The pressing device 10 adopts but is not limited to a turbine box. The turbine box is a prior art and will not be described in detail here.

[0037] like Figures 1 to 4 As shown, a retaining ring 81 is fixed on the pull rod 8 at a position inside the side rod 42 , and a groove corresponding to the retaining ring 81 is opened on the side rod 42 , and the retaining ring 81 is arranged in the groove.

[0038] like Figure 6 As shown, a keyway 14 is provided on the pull rod 8, and a key corresponding to the keyway 14 is provided on the inner side of the press-down nut 82, so that the press-down nut 82 is connected to the pull rod 8 by a key.

[0039] like Figure 1 , Figure 2 , Figure 8 As shown, it also includes a base plate 11, and slide rails 12 are installed on both sides of the base plate 11. A slider corresponding to the slide rails 12 is provided at the bottom of the trolley 1. The trolley 1 is slidably connected to the slide rails 12. The slide rails 12 are arranged parallel to the upper horizontal roller system 3. One end of the upper horizontal roller system 3 and the lower horizontal roller system 2 are connected to a universal shaft. A shaft coupling bracket 7 for supporting the universal shaft is also installed at the end of the slide rail 12 close to the universal shaft, and a roller changing assembly 6 is installed on the side of the shaft coupling bracket 7 away from the trolley 1.

[0040] like Figure 2 , Figure 7 As shown, the shaft bracket 7 includes a U-shaped frame 71, a screw 74, and a clamping plate 72. The end of the U-shaped frame 71 is fixedly connected to the slide rail 12 through a fixed plate. There are three screws 74, one of which is installed on the top of the U-shaped frame 71 through a threaded seat. The screw 74 runs through the U-shaped frame 71. The bottom of the screw 74 is rotatably connected to the clamping plate 72. The other two screws 74 are threadedly connected to the fixed plate through threaded seats, and the top is rotatably connected to the clamping plate 72.

[0041] like Figure 7 As shown, a slot corresponding to the universal shaft is formed on the clamping plate 72, and support bars 73 for supporting the universal shaft are fixed at both ends of the bottom of the clamping plate 72;

[0042] A guide groove corresponding to the clamping plate 72 is formed on the inner side of the U-shaped frame 71 , and two sides of the clamping plate 72 are arranged in the guide groove.

[0043] like Figure 2 , Figure 8 As shown, the roller changing assembly 6 includes a support seat 61 and a roller changing hydraulic cylinder 62 . The roller changing hydraulic cylinder 62 is installed on the support seat 61 . The telescopic rod of the roller changing hydraulic cylinder 62 passes through the U-shaped frame 71 , and the end is fixedly connected to the trolley 1 .

[0044] The novel short stress tie rod prestressed universal rolling mill created by the present invention has a tie rod 8 that penetrates the hydraulic assembly 9, the bearing seat 31, the tie rod 8, and the vertical roller beam 4. The operation is simple and convenient, and each structural part can be quickly disassembled to achieve rapid roll replacement.

[0045] The locking cylinder 91 presses the bearing seat 31 and the vertical roller beam 4. The main structure of the rolling mill is a prestressed tie rod 8 located on the tie beam 5 assembly (which can move up and down within a certain range). The top of the tie rod 8 is splined and connected to the pressing device 10. By rotating the tie rod 8 through the pressing device 10, the clamping nut (left and right rotating nut) located on the tie beam 5 assembly can be controlled to move up and down. The upper and lower roller system bearing seats 31 are directly in contact with the clamping nut on the vertical roller beam 4. The roller system opening degree can be adjusted by adjusting the distance between the upper and lower nuts of the clamping nut. A hydraulic locking cylinder 91 is installed on the upper horizontal roller system 3 bearing seat 31. The hydraulic locking cylinder 91, the upper horizontal roller system 3, the vertical roller beam 4, the clamping nut 13, the lower horizontal roller system 2, the lower horizontal roller pressure plate 83, the locking pin 84 plate, and the vertical roller beam 4 are locked together through the tie rod 8. Prestress is applied through the hydraulic locking cylinder 91 to eliminate the gaps in the assembly of the roller bearing seat 31, the clamping nut, the vertical roller beam 4, etc., and prestress is applied to the tie rod 8 to increase the rigidity of the short stress rolling mill. Due to the prestress applied by the hydraulic assembly 9, the mechanical locking of the locking nut 92 on the hydraulic locking cylinder 91 achieves the effect of prestressed mechanical locking, and the hydraulic system can stop working when the rolling mill is working. The prestress applied to the tie rod 8 by the hydraulic locking cylinder 91 increases the rigidity of the rolling mill, ensures that the pre-placed roll gap position of the rolling mill remains unchanged, and ensures the rolling accuracy.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. New short stress tie rod prestressed universal rolling mill, characterized by: The invention comprises an upper horizontal roller system (3), a lower horizontal roller system (2), a vertical roller assembly (17), a hydraulic assembly (9), a pull rod (8), and a trolley (1). A vertical roller beam (4) is fixed on the top of the trolley (1). There are two vertical roller assemblies (17). The two vertical roller assemblies (17) are relatively mounted on the inner side of the vertical roller beam (4). The lower horizontal roller system (2) is mounted on the lower part of the vertical roller beam (4) through a bearing seat (31). The upper horizontal roller system (3) is mounted on the vertical roller beam (4) through a bearing seat (31). The upper horizontal roller system (3) and the lower horizontal roller system (2) are arranged in parallel. Both ends of each bearing seat (31) extend to both sides to form a mounting block (32). Each mounting block (32) corresponding to the upper horizontal roller system (3) is mounted with a A hydraulic assembly (9) is installed, and there are multiple pull rods (8), all of which are arranged on the vertical roller beam (4) and correspond to the mounting blocks (32) on both sides of the horizontal roller system. Through holes corresponding to the pull rods (8) are opened on the mounting blocks (32) and the vertical roller beam (4). The pull rods (8) pass through the hydraulic assembly (9), the mounting block (32) corresponding to the upper horizontal roller system (3), the vertical roller beam (4), and the mounting block (32) corresponding to the lower horizontal roller system (2) in sequence through the through holes. A pressure plate (83) for supporting the lower horizontal roller system (2) is fixed at the bottom of the pull rod (8) through a locking pin (84). A pressing assembly for adjusting the upper horizontal roller system (3) and the lower horizontal roller system (2) is also installed on the vertical roller beam (4); The hydraulic assembly (9) comprises a locking cylinder (91) and a locking nut (92). The locking cylinder (91) is mounted on a fixed block corresponding to the upper horizontal roller system (3). The locking nut (92) is arranged on the upper part of the locking cylinder (91). The pull rod (8) passes through the locking cylinder (91) and the locking nut (92). The pull rod (8) is provided with a threaded portion. The pull rod (8) is threadedly connected to the clamping nut (13) through the threaded portion. The clamping nut (13) is clamped on the locking cylinder (91). The vertical roller beam (4) comprises a cross bar (41) and a side bar (42). The side bar (42) is arranged in parallel with the horizontal roller system. A cross bar (41) is connected between the same ends of the two side bars (42). A vertical roller assembly (17) is installed on the inner side of each cross bar (41). The top of the side bar (42) is connected to the bearing seat (31). A mounting member (43) is fixed on the outer side of the side bar (42). The side bar (42) is connected to the trolley (1) through the mounting member (43). A through hole corresponding to the pull rod (8) is opened on the side bar (42). The pull rod (8) passes through the side bar (42) through the through hole. The pressing assembly comprises a tension beam (5) and a pressing nut (82). There are four tension beams (5). The upper and lower parts of each side rod (42) are connected to the tension beam (5) by bolts. The tension beam (5) and the side rod (42) are arranged in parallel. The tension beam (5) located on the vertical roller beam (4) is arranged at the bottom of the mounting block (32). The tension rod (8) passes through the tension beam (5). A pressing nut (82) is fixed on the tension beam (5). A threaded hole corresponding to the pressing nut (82) is opened on the tension beam (5). The pressing nut (82) is threadedly connected to the tension beam (5) through the threaded hole. A pressing device (10) for driving the rotation of the tension rod (8) is connected to the top of the tension rod (8). The bottom of the tension rod (8) is spaced apart from the trolley (1).

2. The novel short stress tie rod prestressed universal rolling mill according to claim 1 is characterized in that: A retaining ring (81) is fixed on the pull rod (8) at a position inside the side rod (42), a groove corresponding to the retaining ring (81) is formed on the side rod (42), and the retaining ring (81) is arranged in the groove.

3. The novel short stress tie rod prestressed universal rolling mill according to claim 1 is characterized in that: A keyway (14) is provided on the pull rod (8), a key corresponding to the keyway (14) is provided on the inner side of the press-down nut (82), and the press-down nut (82) is key-connected with the pull rod (8).

4. The novel short stress tie rod prestressed universal rolling mill according to claim 1 is characterized in that: It also includes a base plate (11), slide rails (12) are installed on both sides of the base plate (11), a slider corresponding to the slide rails (12) is provided at the bottom of the trolley (1), the trolley (1) is slidably connected to the slide rails (12), the slide rails (12) are arranged in parallel with the upper horizontal roller system (3), one end of the upper horizontal roller system (3) and the lower horizontal roller system (2) are connected to a universal shaft, and a shaft bracket (7) for supporting the universal shaft is also installed at the end of the slide rail (12) close to the universal shaft, and a roller changing assembly (6) is installed on the side of the shaft bracket (7) away from the trolley (1).

5. The novel short stress tie rod prestressed universal rolling mill according to claim 4 is characterized in that: The roller changing assembly (6) comprises a support seat (61) and a roller changing hydraulic cylinder (62). The roller changing hydraulic cylinder (62) is mounted on the support seat (61). The telescopic rod of the roller changing hydraulic cylinder (62) passes through the U-shaped frame (71), and the end thereof is fixedly connected to the trolley (1).

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