Rolling mill cardan shaft fixing device

Abstract

The utility model provides a rolling mill cardan shaft fixing device which comprises two clamping assemblies, and a clamping position for clamping a rolling mill cardan shaft is formed between clamping plates of the two clamping assemblies. The clamping assembly comprises a mounting seat, a clamping assembly and a clamping assembly, wherein the mounting seat is fixedly connected with the rolling mill frame; the sliding plate is movably connected to the mounting seat; the clamping plate is connected with the sliding plate; and the driving assembly is used for driving the sliding plate to move. The fixing device has the advantages that compared with a traditional frame type fixing device, the two fixing devices are more convenient to maintain, the clamping assembly on one side can be independently maintained, and the fixing device is simpler in structure, not prone to deformation and lower in failure rate.

Description

Technical Field

[0001] This utility model belongs to the technical field of rolling mill equipment, and in particular relates to a rolling mill universal joint fixing device. Background Technology

[0002] During the roll changing process in the rolling mill, a universal joint fixing device is needed to temporarily fix the rolling mill universal joint. The current universal joint fixing device structure uses a hydraulic cylinder to drive the frame structure to move upward, and the frame structure has a support plate to support the universal joint. This fixing device has the following problems during use: First, the frame structure has low strength. When deformation occurs and maintenance is needed, the entire frame needs to be disassembled, resulting in low maintenance efficiency; Second, it only supports the universal joint, and the universal joint is prone to shaking, which affects the safety of the roll installation. Utility Model Content

[0003] In view of this, the present invention aims to provide a rolling mill universal joint fixing device in order to solve at least one of the above-mentioned technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A rolling mill universal joint fixing device includes two clamping assemblies, and a clamping position for clamping the rolling mill universal joint is formed between the clamping plates of the two clamping assemblies;

[0006] The clamping assembly includes:

[0007] Mounting base, which is fixedly connected to the rolling mill stand;

[0008] A sliding plate, which is movably connected to the mounting base;

[0009] A clamping plate, which is connected to a sliding plate;

[0010] A drive component for driving the sliding plate to move.

[0011] Furthermore, the mounting base has a guide boss arranged along the moving direction of the sliding plate, and the sliding plate has a guide groove that matches the guide boss, with the guide boss located inside the guide groove.

[0012] Furthermore, the mounting base has a first threaded hole, and the sliding plate has a strip-shaped hole corresponding to the first threaded hole, the strip-shaped hole being arranged along the moving direction of the sliding plate;

[0013] The strip-shaped hole is equipped with a limiting bolt, which is threaded through the through hole and connected to the first threaded hole. The diameter of the limiting bolt is smaller than the width of the strip-shaped hole, and there is a gap between the head of the limiting bolt and the sliding surface.

[0014] Furthermore, a mounting plate is fixedly provided at one end of the sliding plate guide groove. The mounting plate has a mounting hole, and the clamping plate has a second threaded hole corresponding to the mounting hole. The mounting hole is provided with a connecting bolt, which passes through the mounting thread and is connected to the inside of the second threaded hole. The clamping plate is detachably connected to the mounting plate through the connecting bolt.

[0015] Furthermore, the end face of the clamping plate near the clamping position is an arc-shaped surface. There are various models of clamping plates, and the arc-shaped surface diameter of different models of clamping plates is different, which are suitable for rolling mill universal joints of different diameters.

[0016] Furthermore, the mounting plate has a reinforcing rib fixed to the end face of the clamping plate, the driving component is a hydraulic cylinder, the hydraulic cylinder housing is fixedly connected to the guide boss, and the hydraulic cylinder output shaft is connected to the reinforcing rib.

[0017] Furthermore, a connecting plate is fixed on the output shaft of the hydraulic cylinder. The connecting plate has a connecting groove that matches the reinforcing rib. The reinforcing rib has a first insertion hole corresponding to the connecting plate. The connecting plate has a second insertion hole corresponding to the first insertion hole. The insertion rod passes through the second insertion hole and the first insertion hole in sequence. The insertion rod is set perpendicular to the ground.

[0018] Furthermore, a mounting boss is fixedly provided at the lower end of the mounting plate, and a groove corresponding to the mounting boss is opened at the lower end of the clamping plate.

[0019] Furthermore, the clamping plate has two mounting grooves on its arc-shaped surface. The mounting grooves are arranged along the axis of the universal joint. The mounting grooves are provided with pads, and the pads are detachably connected to the clamping plate by mounting bolts.

[0020] One of the pads is located above the axis of the universal joint, and the other pad is located below the axis of the universal joint.

[0021] Furthermore, a third threaded hole is provided at the bottom of the mounting groove, and a through hole corresponding to the mounting threaded hole is provided on the pad. The mounting bolt passes through the through hole and is threaded to the inside of the third threaded hole.

[0022] Compared with the prior art, the universal joint fixing device for rolling mills described in this utility model has the following advantages:

[0023] (1) The universal joint fixing device for rolling mill described in this utility model is more convenient to maintain by setting two clamping components, and the clamping component on one side can be repaired separately. It is also simpler in structure, less prone to deformation, and has a lower failure rate.

[0024] (2) The universal joint fixing device for rolling mill described in this utility model has a limiting bolt inside the strip hole, which not only limits the movement of the sliding plate, but also prevents the guide boss from disengaging from the guide groove along the axis of the universal joint. Attached Figure Description

[0025] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0026] Figure 1 This is a front view structural diagram of the device described in an embodiment of the present utility model;

[0027] Figure 2 As described in the embodiments of this utility model Figure 1 Schematic diagram of the structure at point A;

[0028] Figure 3 This is a three-dimensional structural diagram of the clamping assembly described in an embodiment of the present utility model;

[0029] Figure 4 This is a three-dimensional structural diagram of the mounting base described in an embodiment of the present utility model;

[0030] Figure 5 This is a three-dimensional structural diagram of the sliding plate described in an embodiment of the present utility model;

[0031] Figure 6 This is a three-dimensional structural diagram of the clamping plate described in an embodiment of the present utility model;

[0032] Figure 7 This is a three-dimensional structural diagram of the hydraulic cylinder described in an embodiment of the present utility model;

[0033] Figure 8 This is a schematic diagram of the three-dimensional structure of the pad described in an embodiment of the present utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Rolling mill stand; 2. Universal joint; 3. Sliding plate; 4. Mounting base; 5. Clamping plate; 6. Pad plate; 7. Hydraulic cylinder; 8. Insert rod; 9. Limit bolt; 10. Connecting bolt; 301. Guide groove; 302. Strip hole; 303. Mounting plate; 304. Mounting boss; 305. Reinforcing rib; 306. Insertion hole one; 401. Guide boss; 402. First threaded hole; 501. Groove; 502. Mounting groove; 503. Third threaded hole; 601. Through hole; 701. Connecting plate; 702. Connecting groove; 703. Insertion hole two. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0037] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] like Figures 1-8 As shown, a mill universal joint 2 fixing device includes two clamping assemblies, with clamping plates 5 of the two clamping assemblies forming a clamping position for clamping the mill universal joint 2. Each clamping assembly includes: a mounting base 4, fixedly connected to a mill frame 1; a sliding plate 3, movably connected to the mounting base 4; clamping plates 5, connected to the sliding plate 3; and a driving assembly for driving the sliding plate 3 to move. Figure 1 As shown, the clamping plates 5 of the two clamping assemblies are arranged facing each other, and the two clamping assemblies form a clamping group. Two clamping groups can be installed on a rolling mill, which are used to fix the universal joint 2 of the upper roll and the universal joint 2 of the lower roll of the rolling mill respectively.

[0041] The mounting base 4 has a guide boss 401 arranged along the moving direction of the sliding plate 3, and the sliding plate 3 has a guide groove 301 that matches the guide boss 401. The guide boss 401 is located inside the guide groove 301. The design of the guide boss 401 and the guide groove 301 makes the movement of the sliding plate 3 more stable, and the guide boss 401 provides support for the sliding plate 3.

[0042] The mounting base 4 has a first threaded hole 402, and the sliding plate 3 has a corresponding strip hole 302. The strip hole 302 is set along the moving direction of the sliding plate 3. The strip hole 302 is equipped with a limiting bolt 9, which is threaded through the through hole 601 and connected to the first threaded hole 402. The diameter of the limiting bolt 9 is smaller than the width of the strip hole 302, and there is a gap between the head of the limiting bolt 9 and the sliding plate. The limiting bolt 9 is inside the strip hole 302, which not only limits the movement of the sliding plate 3, but also prevents the guide boss 401 from disengaging from the guide groove 301 along the axis of the universal joint 2.

[0043] A mounting plate 303 is fixed at one end of the guide groove 301 of the sliding plate 3. The mounting plate 303 has a mounting hole, and the clamping plate 5 has a second threaded hole corresponding to the mounting hole. The mounting hole is provided with a connecting bolt 10. The connecting bolt 10 passes through the mounting thread and is connected to the inside of the second threaded hole. The clamping plate 5 is detachably connected to the mounting plate 303 through the connecting bolt 10.

[0044] The end face of the clamping plate 5 near the clamping position is an arc-shaped surface. There are various models of clamping plate 5, and the diameter of the arc-shaped surface of different models of clamping plate 5 is different, which is suitable for rolling mill universal shafts 2 of different diameters, thus improving the applicability of the device.

[0045] The mounting plate 303 has a reinforcing rib 305 fixedly attached to the end face of the clamping plate 5. The driving component is a hydraulic cylinder 7. The housing of the hydraulic cylinder 7 is fixedly connected to the guide boss 401, and the output shaft of the hydraulic cylinder 7 is connected to the reinforcing rib 305. A connecting plate 701 is fixedly attached to the output shaft of the hydraulic cylinder 7. The connecting plate 701 has a connecting groove 702 that matches the reinforcing rib 305. The reinforcing rib has a first insertion hole 306 corresponding to the connecting plate 701, and the connecting plate 701 has a second insertion hole 703 corresponding to the first insertion hole 306. The insertion rod 8 passes through the second insertion hole 703 and the first insertion hole 306 in sequence, and the insertion rod 8 is set perpendicular to the ground. The setting of the insertion rod 8 facilitates the disassembly of the sliding plate 3 for maintenance.

[0046] The mounting plate 303 has a mounting boss 304 fixed at its lower end, and the clamping plate 5 has a groove 501 at its lower end that corresponds to the mounting boss 304. The mounting boss 304 provides support for the clamping plate 5, reduces the vertical force on the connecting bolts 10, and extends their service life.

[0047] Two mounting grooves 502 are formed on the arc-shaped surface of the clamping plate 5. The mounting grooves 502 are arranged along the axis of the universal joint 2. The mounting grooves 502 are provided with a pad 6, which is detachably connected to the clamping plate 5 by mounting bolts; (e.g.) Figure 2 As shown in the diagram, where point a indicates the position of the axis of universal joint 2, one pad 6 is located above the axis of universal joint 2, and the other pad 6 is located below the axis of universal joint 2. The pad 6 is a structural component made of copper, which can prevent scratches on the surface of universal joint 2.

[0048] The lower pad 6 provides support, while the upper pad 6 acts as a limiter to prevent the universal joint 2 from shaking.

[0049] The bottom of the mounting slot 502 has a third threaded hole 503, and the pad 6 has a through hole 601 corresponding to the mounting threaded hole. The mounting bolt passes through the through hole 601 and is threaded to the inside of the third threaded hole 503.

[0050] Work process:

[0051] When this solution is implemented, when the roll needs to be disassembled, the output shaft of the hydraulic cylinder 7 extends, driving the sliding plate 3 to move. The pad 6 contacts the side wall of the universal joint 2 to fix the universal joint 2. After the roll is replaced, the output shaft of the hydraulic cylinder 7 retracts to release the fixation. Compared with the traditional frame-type fixing device, the maintenance is more convenient by setting two clamping components. The clamping components on one side can be repaired separately. Moreover, the structure is simpler and less prone to deformation, resulting in a lower failure rate.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rolling mill cardan shaft (2) fixing device, characterized in that, The present application relates to a universal shaft clamping device for rolling mill, which comprises two clamping assemblies, and a clamping position of a universal shaft (2) of a rolling mill is formed between clamping plates (5) of the two clamping assemblies. The clamping assembly comprises: a mounting seat (4) fixedly connected with a rolling mill frame (1); a sliding plate (3) movably connected with the mounting seat (4); a clamping plate (5) connected with the sliding plate (3); a driving assembly for driving the sliding plate (3) to move.

2. A device for fixing a universal shaft (2) of a rolling mill according to claim 1, characterized in that: A guide boss (401) is arranged on the mounting seat (4) along the moving direction of the sliding plate (3), a guide groove (301) matched with the guide boss (401) is arranged on the sliding plate (3), and the guide boss (401) is located on the inner side of the guide groove (301).

3. A mill universal shaft (2) fixing device according to claim 2, characterized in that: A first threaded hole (402) is arranged on the mounting seat (4), and a strip-shaped hole (302) corresponding to the first threaded hole (402) is arranged on the sliding plate (3), and the strip-shaped hole (302) is arranged along the moving direction of the sliding plate (3). The strip-shaped hole (302) is provided with a limiting bolt (9), the limiting bolt (9) is threadedly connected with the first threaded hole (402) through a through hole (601), the diameter of the limiting bolt (9) is smaller than the width of the strip-shaped hole (302), and a gap exists between the head of the limiting bolt (9) and the sliding plate.

4. A device for fixing a universal shaft (2) of a rolling mill according to claim 1, characterized in that: One end of the sliding plate (3) is fixedly provided with a mounting plate (303) in the guide groove (301), the mounting plate (303) is provided with a mounting hole, the clamping plate (5) is provided with a second threaded hole corresponding to the mounting hole, the mounting hole is provided with a connecting bolt (10), the connecting bolt (10) is threadedly connected to the inner side of the second threaded hole, and the clamping plate (5) is detachably connected with the mounting plate (303) through the connecting bolt (10).

5. A mill universal shaft (2) fixing device according to claim 4, characterized in that: The end face of the clamping plate (5) near the clamping position is an arc face, the clamping plate (5) has multiple types, and the arc faces of clamping plates (5) of different types have different diameters and are suitable for rolling mill universal shafts (2) of different diameters.

6. A mill universal shaft (2) fixing device according to claim 4, characterized in that: The mounting plate (303) is fixedly provided with a reinforcing rib (305) at the end face of the clamping plate (5), the driving assembly is a hydraulic cylinder (7), the shell of the hydraulic cylinder (7) is fixedly connected with the guide boss (401), and the output shaft of the hydraulic cylinder (7) is connected with the reinforcing rib (305).

7. A mill universal shaft (2) fixing device according to claim 6, characterized in that: The output shaft of the hydraulic cylinder (7) is fixedly provided with a connecting plate (701), the connecting plate (701) is provided with a connecting groove (702) matched with the reinforcing rib (305), the reinforcing rib (305) is provided with a first insertion hole (306) corresponding to the connecting plate (701), the connecting plate (701) is provided with a second insertion hole (703) corresponding to the first insertion hole (306), and a plug rod (8) penetrates the second insertion hole (703) and the first insertion hole (306) in sequence.

8. A device for fixing a universal shaft (2) of a rolling mill according to claim 4, characterized in that: The mounting plate (303) is fixedly provided with a mounting boss (304) at the lower end, and the lower end of the clamping plate (5) is provided with a groove (501) corresponding to the mounting boss (304).

9. A device for fixing a universal shaft (2) of a rolling mill according to claim 4, characterized in that: The arc surface of the clamping plate (5) is provided with two installation grooves (502) arranged along the axis of the universal shaft (2), and the installation grooves (502) are provided with a backing plate (6) which is detachably connected with the clamping plate (5) through an installation bolt. One of the backing plates (6) is located above the axis of the universal shaft (2), and the other is located below the axis of the universal shaft (2).

10. A device for fixing a universal shaft (2) of a rolling mill according to claim 9, characterized in that: The bottom end of the installation groove (502) is provided with a third threaded hole (503), and the backing plate (6) is provided with a through hole (601) corresponding to the installation threaded hole, and an installation bolt is screwed into the inner side of the third threaded hole (503) through the through hole (601).

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