Cardan shaft bracket device of intermediate rolling unit

Abstract

The utility model provides an intermediate rolling unit cardan shaft bracket device which comprises a bracket body, an upper supporting shaft sleeve and a lower supporting shaft sleeve, the upper supporting shaft sleeve and the lower supporting shaft sleeve are connected to the bracket body in a sliding mode in the vertical direction, and an upper buffering unit connected with the upper supporting shaft sleeve is arranged on the upper portion of the bracket body. A lower buffering unit connected with the lower supporting shaft sleeve is arranged on the side portion of the bracket body, the bracket body is further connected with a jacking unit, and the jacking unit is used for adjusting the distance between the upper supporting shaft sleeve and the lower supporting shaft sleeve. According to the universal shaft bracket device of the intermediate rolling unit, through the arrangement of the upper buffering unit and the lower buffering unit, the stress condition of the universal shaft in the steel passing process is improved, the service life of the universal shaft is prolonged, meanwhile, the upper supporting shaft sleeve and the lower supporting shaft sleeve are driven by the jacking unit to get close to each other or get away from each other in a back-to-back mode, and the service life of the universal shaft is prolonged. The positions of the two cardan shafts are symmetrically adjusted, the operation frequency of manually adjusting the distance between the cardan shafts is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rolling mill equipment, and in particular relates to a universal shaft bracket device for an intermediate rolling mill group. Background Art

[0002] During the steel rolling production process, the universal joint is a key component for transmitting power and torque to the rolling rollers. It is subjected to large axial force, radial force and torsional force during operation. The rolling mill needs a universal joint bracket to effectively support and position the universal joint during operation to reduce the swing of the universal joint and thereby improve the stress condition of the universal joint.

[0003] Existing universal joint brackets often utilize a fixed spacing design, which lacks the ability to adapt to axial offsets and angular variations under complex operating conditions. Long-term use can lead to increased wear at the contact points between the bracket and the universal joint, increased noise, damage to the universal joint bearings, and decreased transmission efficiency. Furthermore, during mill or roll changes, repeated adjustments to the distance between the two universal joints to accommodate roll coupling are time-consuming, significantly reducing operational efficiency. Utility Model Content

[0004] The embodiment of the utility model provides a universal joint bracket device for an intermediate rolling mill, which can improve the stress condition of the universal joint during the steel passing process, thereby increasing the service life of the universal joint. At the same time, the positions of the two universal joints are symmetrically adjusted through the supporting unit, thereby reducing the number of manual operations for adjusting the distance between the universal joints and improving the working efficiency.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a universal joint bracket device of a medium rolling mill group, including a bracket body, an upper support shaft sleeve and a lower support shaft sleeve, the upper support shaft sleeve and the lower support shaft sleeve are respectively connected to the bracket body in an up and down direction, and the lower support shaft sleeve is located below the upper support shaft sleeve, the upper part of the bracket body is provided with an upper buffer unit connected to the upper support shaft sleeve, the side part of the bracket body is provided with a lower buffer unit connected to the lower support shaft sleeve, and the bracket body is also connected to a top support unit located between the upper support shaft sleeve and the lower support shaft sleeve, and the top support unit is used to adjust the distance between the upper support shaft sleeve and the lower support shaft sleeve.

[0006] As another embodiment of the present invention, the upper support sleeve and the lower support sleeve both include a shaft sleeve sleeved on the outer periphery of the universal shaft and two support shafts symmetrically connected on both sides of the shaft sleeve. The outer peripheries of the two support shafts of the upper support sleeve are rotatably connected to an upper slider that slides with the bracket body, and the outer peripheries of the two support shafts of the lower support sleeve are rotatably connected to a lower slider that slides with the bracket body. The upper buffer unit and the upper slider are arranged in a one-to-one correspondence, and the lower buffer unit and the lower slider are arranged in a one-to-one correspondence.

[0007] As another embodiment of the present invention, the upper buffer unit includes an upper guide rod, a first elastic member and a first crimping member. The upper guide rod is connected to the upper slider and is arranged to pass through the top wall of the bracket body upward, and the upper guide rod and the bracket body are slidably matched. The first crimping member is sleeved on the outer periphery of the upper guide rod. The first elastic member is sleeved on the outer periphery of the upper guide rod and elastically abuts between the first crimping member and the top wall of the bracket body.

[0008] As another embodiment of the present invention, the lower buffer unit includes a lower guide rod, a second elastic member and a second crimping member. The lower guide rod is connected to the lower support sleeve and is slidably connected to the side wall of the bracket body along the up and down directions. The second crimping member is sleeved on the outer periphery of the lower guide rod. The second elastic member is sleeved on the outer periphery of the lower guide rod and elastically abuts between the second crimping member and the side wall of the bracket body.

[0009] As another embodiment of the present invention, the outer end of the support shaft of the lower support sleeve is threadedly connected to a horizontally extending connecting screw, the connecting screw passes through the side wall of the bracket body, the outer periphery of the connecting screw is provided with a connecting sleeve, and the lower end of the lower guide rod is connected to the connecting sleeve.

[0010] As another embodiment of the present invention, the first crimping member and the second crimping member both include a locking nut threadedly connected to the outer periphery of the upper guide rod or the lower guide rod and a baffle sleeved on the outer periphery of the upper guide rod or the lower guide rod, and the baffle is used to press the first elastic member or the second elastic member under the pushing action of the locking nut.

[0011] As another embodiment of the present invention, the supporting unit includes an adjusting screw, two sliding sleeves and two groups of push rod assemblies. The adjusting screw is connected to the bracket body by rotation in the horizontal direction. The two sliding sleeves are respectively threaded on the outer periphery of the adjusting screw and are respectively arranged near the two ends of the adjusting screw. The two groups of push rod assemblies are respectively located on the upper and lower sides of the adjusting screw and are respectively arranged in one-to-one correspondence with the two shaft sleeves. The push rod assembly includes a connecting piece connected to the shaft sleeve and two push rods symmetrically hinged on the connecting piece. The two push rods in each group of push rod assemblies are respectively hingedly connected to the two sliding sleeves. One end of the adjusting screw is arranged through the side wall of the bracket body and is connected to a handwheel.

[0012] As another embodiment of the present invention, the connecting member is an electromagnet, and the connecting member can be magnetically adsorbed to the shaft sleeve.

[0013] As another embodiment of the present invention, both ends of the sliding sleeve are respectively provided with a stop platform protruding toward the outer periphery, the outer peripheral sliding sleeve of the sliding sleeve is provided with a connecting support, a third elastic member is connected between the stop platform and the connecting support, the third elastic member is sleeved on the outer periphery of the sliding sleeve, and the push rod is hingedly connected to the connecting support.

[0014] As another embodiment of the present invention, the connecting member includes a connecting seat and a connecting block. The connecting seat is hinged to the two push rods in the same group of push rod assemblies respectively. The connecting block is hinged to the connecting seat through a hinge axis. The hinge axis is arranged perpendicular to the central axis of the shaft sleeve. The connecting block is connected to the outer peripheral wall of the shaft sleeve, and the connecting block can swing vertically around the hinge axis.

[0015] The beneficial effects of the universal shaft bracket device of a rolling mill provided by the utility model are as follows: compared with the prior art, the universal shaft bracket device of the rolling mill provided by the utility model provides a buffer for the vibration of the universal shaft through the setting of the upper buffer unit and the lower buffer unit, reduces the friction between the upper support shaft sleeve and the lower support shaft sleeve and the bracket body, improves the stress condition of the universal shaft during the steel passing process, increases the service life of the universal shaft, and has the advantages of simple structure and easy maintenance; at the same time, the upper support shaft sleeve and the lower support shaft sleeve are driven to approach each other or move away from each other through the supporting unit to symmetrically adjust the positions of the two universal shafts, reduces the number of operations for manually adjusting the distance between the universal shafts, and improves the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 A schematic structural diagram of a universal shaft bracket device for a medium rolling mill provided by an embodiment of the present utility model;

[0018] Figure 2 For the embodiment of the utility model Figure 1 A schematic diagram of the enlarged structure of the middle part A;

[0019] Figure 3 For the embodiment of the utility model Figure 1 A schematic diagram of the enlarged structure of the middle B part;

[0020] Figure 4 This is a schematic structural diagram of the upper support sleeve and push rod assembly provided in an embodiment of the present utility model.

[0021] Among them, the reference numerals in the figures are:

[0022] 1. Bracket body; 11. Upper slide groove; 12. Lower slide groove; 2. Upper support sleeve; 21. Shaft sleeve; 22. Support shaft; 3. Lower support sleeve; 4. Upper buffer unit; 41. Upper guide rod; 42. First elastic member; 43. First crimping member; 5. Lower buffer unit; 51. Lower guide rod; 52. Second elastic member; 53. Second crimping member; 531. Locking nut; 532. Blocking piece; 54. Connecting screw; 55. Connecting sleeve; 6. Support unit; 61. Adjusting screw; 62. Sliding sleeve; 621. Blocking platform; 622. Connecting support; 63. Push rod assembly; 631. Connecting member; 6311. Connecting seat; 6312. Connecting block; 632. Push rod; 64. Third elastic member; 7. Upper slider; 8. Lower slider. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "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 limiting the present invention. The terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0025] Please also refer to Figures 1 to 4Now, a universal shaft bracket device for a rolling mill provided by the present invention is described. The universal shaft bracket device for a rolling mill comprises a bracket body 1, an upper support sleeve 2 and a lower support sleeve 3. The upper support sleeve 2 and the lower support sleeve 3 are respectively connected to the bracket body 1 in an up-down sliding manner, and the lower support sleeve 3 is located below the upper support sleeve 2. An upper buffer unit 4 connected to the upper support sleeve 2 is provided on the upper part of the bracket body 1, and a lower buffer unit 5 connected to the lower support sleeve 3 is provided on the side of the bracket body 1. A supporting unit 6 located between the upper support sleeve 2 and the lower support sleeve 3 is further connected to the bracket body 1. The supporting unit 6 is used to drive the upper support sleeve 2 and the lower support sleeve 3 to move closer to each other or away from each other to adjust the distance between the upper support sleeve 2 and the lower support sleeve 3.

[0026] The present embodiment provides a universal shaft bracket device for a rolling mill. Compared with the prior art, the arrangement of the upper buffer unit 4 and the lower buffer unit 5 provides a buffer for the vibration of the universal shaft, reduces the friction between the upper support shaft sleeve 2 and the lower support shaft sleeve 3 and the bracket body 1, improves the stress condition of the universal shaft during the steel passing process, increases the service life of the universal shaft, and has the advantages of simple structure and easy maintenance. At the same time, the upper support shaft sleeve 2 and the lower support shaft sleeve 3 are driven to move closer to each other or away from each other through the supporting unit 6 to symmetrically adjust the positions of the two universal shafts, thereby reducing the number of operations for manually adjusting the distance between the universal shafts and improving the working efficiency.

[0027] It should be noted that a rolling mill primarily consists of a main machine, a reduction gearbox, two universal joints, and two rolls. One end of the universal joint is connected to the reduction gearbox output, and the other end is connected to the rolls. The billet passes between the two rolls, where it is rolled and formed to the desired size and shape (called "passing"). When the rolling path of the rolls becomes excessively worn, a roll change is required. However, because the spacing between the two reduction gearbox outputs differs from the spacing between the two roll heads, manual adjustment of the spacing between the two universal joints is required during the roll change to align with the spacing between the roll heads.

[0028] In this embodiment, the upper and lower universal joints are rotatably connected to the upper support sleeve 2 and the lower support sleeve 3, respectively. The upper and lower support sleeves 2 and 3 are driven toward or away from each other by the supporting unit 6 to adjust the distance between them. This allows for symmetrical and precise adjustment of the positions of the two universal joints, reducing the labor intensity during roll changing operations. During mill operation, the upper and lower buffer units 4 and 5 act as buffers for the two universal joints, respectively. The supporting unit 6 also allows for symmetrical movement and buffering of the two universal joints, improving their operational performance.

[0029] As a specific embodiment of the universal shaft bracket device of the intermediate rolling mill provided by the present invention, see Figure 1and Figure 4 The upper support sleeve 2 and the lower support sleeve 3 both include a shaft sleeve 21 sleeved on the outer periphery of the universal shaft and two support shafts 22 symmetrically connected to both sides of the shaft sleeve 21. The outer peripheries of the two support shafts 22 of the upper support sleeve 2 are rotatably connected to the upper slider 7 that slides with the bracket body 1. The outer peripheries of the two support shafts 22 of the lower support sleeve 3 are rotatably connected to the lower slider 8 that slides with the bracket body 1. The upper buffer unit 4 is arranged in a one-to-one correspondence with the upper slider 7, and the lower buffer unit 5 is arranged in a one-to-one correspondence with the lower slider 8.

[0030] In this embodiment, an upper slide groove 11 and a lower slide groove 12 are provided on the two opposite side walls of the bracket body 1, which respectively slide with the upper slider 7 and the lower slider 8. When the universal joint vibrates up and down, the support shaft 22 of the upper support sleeve 2 drives the upper slider 7 to slide up and down along the upper slide groove 11, and the support shaft 22 of the lower support sleeve 3 drives the lower slider 8 to slide up and down along the lower slide groove 12. At this time, the two upper buffer units 4 and the two lower buffer units 5 are used to buffer the two sides of the upper support sleeve 2 and the lower support sleeve 3, respectively, thereby improving the stability of the universal joint.

[0031] When working, the universal joint will swing vertically at a certain pitch angle. The rotational connection between the support shaft 22 and the upper slider 7 or the lower slider 8 provides a certain angle range for the above-mentioned swing of the universal joint, which can absorb the excess torsional force on the universal joint and adapt well to the installation error of the universal joint, thereby reducing the difficulty of installation, reducing the additional load caused by installation error, and helping to extend the service life of the universal joint.

[0032] As a specific embodiment of the universal shaft bracket device of the intermediate rolling mill provided by the present invention, see Figure 1 The upper buffer unit 4 includes an upper guide rod 41, a first elastic member 42 and a first crimping member 43. The upper guide rod 41 is connected to the upper slider 7 and is arranged to pass through the top wall of the bracket body 1 upward. The upper guide rod 41 slides with the bracket body 1. The first crimping member 43 is sleeved on the outer periphery of the upper guide rod 41. The first elastic member 42 is sleeved on the outer periphery of the upper guide rod 41 and elastically abuts between the first crimping member 43 and the top wall of the bracket body 1.

[0033] In this embodiment, by adjusting the position of the first crimping member 43 on the upper guide rod 41, the first elastic member 42 is placed in a certain preloaded state. When the upper support sleeve 2 is forced to move the upper slider 7 downward, the upper guide rod 41 simultaneously drives the first crimping member 43 downward. The first elastic member 42 is compressed and generates a reverse thrust to resist the downward movement of the upper support sleeve 2, thereby effectively absorbing the radial impact force of the universal joint, reducing the vibration of the device, and improving the stability and service life of the device. Specifically, the first elastic member 42 is a high-strength spring.

[0034] As a specific embodiment of the universal shaft bracket device of the intermediate rolling mill provided by the present invention, see Figure 1 and Figure 3 The lower buffer unit 5 includes a lower guide rod 51, a second elastic member 52 and a second crimping member 53. The lower guide rod 51 is connected to the lower support sleeve 3 and is slidably connected to the side wall of the bracket body 1 along the up and down directions. The second crimping member 53 is sleeved on the outer periphery of the lower guide rod 51. The second elastic member 52 is sleeved on the outer periphery of the lower guide rod 51 and elastically abuts between the second crimping member 53 and the side wall of the bracket body 1.

[0035] In this embodiment, the lower support sleeve 3 is located directly below the upper support sleeve 2, so the lower buffer unit 5 is arranged on the outside of the bracket body 1. Specifically, a mounting plate extending horizontally outward is connected to the outer wall of the bracket body 1, and the lower guide rod 51 passes through the mounting plate and slides with the mounting plate. The lower sliding groove 12 is arranged to pass through the side wall of the bracket body 1 in the horizontal direction, so as to facilitate the connection between the lower support sleeve 3 and the lower buffer unit 5 located on the outside. The lower guide rod 51 can be connected to the lower slider 8, or directly connected to the support shaft 22 of the lower support sleeve 3. As long as the up and down movement of the lower support sleeve 3 can drive the up and down movement of the lower guide rod 51, the second elastic member 52 can be elastically deformed to provide a buffering effect. Specifically, the second elastic member 52 is a high-strength spring.

[0036] As a specific embodiment of the universal shaft bracket device of the intermediate rolling mill provided by the present invention, see Figure 3 The outer end of the support shaft 22 of the lower support sleeve 3 is threadedly connected to a horizontally extending connecting screw 54, which passes through the side wall of the bracket body 1. The outer periphery of the connecting screw 54 is provided with a connecting sleeve 55, and the lower end of the lower guide rod 51 is connected to the connecting sleeve 55.

[0037] In this embodiment, a threaded hole is defined at the outer end of the support shaft 22. The inner end of a connecting screw 54 is threadedly engaged within the threaded hole and tightened with a nut, achieving a removable connection between the connecting screw 54 and the support shaft 22, facilitating installation. The lower end of the lower guide rod 51 is connected to the connecting screw 54 via a connecting sleeve 55. This allows the lower support sleeve 3 to move upward via the connecting screw 54, thereby compressing the second elastic member 52 to provide a cushioning effect. Furthermore, the connecting sleeve 55, fixedly attached to the lower end of the lower guide rod 51, creates a rotational fit between the lower guide rod 51 and the connecting screw 54, providing circumferential displacement for the lower support sleeve 3 as it rotates in pitch and roll with the universal joint.

[0038] As a specific embodiment of the universal shaft bracket device of the intermediate rolling mill provided by the present invention, see Figure 1 and Figure 3The first crimping member 43 and the second crimping member 53 both include a locking nut 531 threadedly connected to the outer periphery of the upper guide rod 41 or the lower guide rod 51 and a baffle 532 sleeved on the outer periphery of the upper guide rod 41 or the lower guide rod 51, and the baffle 532 is used to press the first elastic member 42 or the second elastic member 52 under the pushing action of the locking nut 531.

[0039] In this embodiment, the baffle 532 is a circular washer whose outer diameter is larger than the maximum outer diameter of the first elastic member 42 or the second elastic member 52. By rotating the locking nut 531 to push the baffle 532 to pre-tighten the first elastic member 42 or the second elastic member 52, the first elastic member 42 or the second elastic member 52 has a certain pre-tightening force, which helps to ensure the stability of the universal joint.

[0040] As a specific embodiment of the universal shaft bracket device of the intermediate rolling mill provided by the present invention, see Figure 1 and Figure 2 The supporting unit 6 includes an adjusting screw 61, two sliding sleeves 62 and two groups of push rod assemblies 63. The adjusting screw 61 is connected to the bracket body 1 in a horizontal direction. The two sliding sleeves 62 are respectively threaded on the outer periphery of the adjusting screw 61 and are respectively arranged near the two ends of the adjusting screw 61. The two groups of push rod assemblies 63 are respectively located on the upper and lower sides of the adjusting screw 61 and are respectively arranged in one-to-one correspondence with the two shaft sleeves 21. The push rod assembly 63 includes a connecting piece 631 connected to the shaft sleeve 21 and two push rods 632 symmetrically hinged on the connecting piece 631. The two push rods 632 in each group of push rod assemblies 63 are respectively hingedly connected to the two sliding sleeves 62 in a one-to-one correspondence. One end of the adjusting screw 61 is arranged through the side wall of the bracket body 1 and is connected to a handwheel.

[0041] In this embodiment, the adjusting screw 61 is a bidirectional screw. The hand wheel is turned to rotate the adjusting screw 61, driving the two sliding sleeves 62 to move closer to each other or away from each other, and respectively driving the upper support sleeve 2 and the lower support sleeve 3 to move closer to each other or away from each other through the push rod assembly 63, thereby realizing symmetrical adjustment of the distance between the two universal joints.

[0042] After adjusting the distance between the universal joints and completing the roller replacement operation through the supporting unit 6, the connecting piece 631 can be separated from the shaft sleeve 21 to avoid interference with the buffering effect of the upper buffer unit 4 and the lower buffer unit 5. Alternatively, the adjusting screw 61 can be freely rotated with the bracket body 1. When the two shaft sleeves 21 vibrate up and down, the two sliding sleeves 62 are pushed back by the push rod assembly 63. Since the adjusting screw 61 can rotate freely, the two shaft sleeves 21 can move synchronously and symmetrically, which helps to improve the balance and stability between the two universal joints.

[0043] As a specific embodiment of the universal joint bracket device of the intermediate rolling mill provided by the present invention, the connecting member 631 is an electromagnet, and the connecting member 631 can be magnetically adsorbed to the shaft sleeve 21.

[0044] In this embodiment, if only the supporting unit 6 is used to adjust the distance between the universal joints, and the connector 631 needs to be separated from the shaft sleeve 21, the connector 631 can be configured as an electromagnet. When the electromagnet is energized, a magnetic field is generated that attracts and fixes the shaft sleeve 21, thereby connecting the connector 631 to the shaft sleeve 21 and enabling the connector 631 to drive the shaft sleeve 21 to move. When the electromagnet is de-energized, the magnetic field disappears, and the shaft sleeve 21 can be easily detached from the electromagnet, thereby disconnecting and separating the connector 631 from the shaft sleeve 21, so that the supporting unit 6 does not affect the buffering displacement of the shaft sleeve 21. By using an electromagnet as the connector 631, fast and flexible connection and disconnection can be achieved, thereby improving the adaptability and operating efficiency of the equipment.

[0045] As a specific embodiment of the universal shaft bracket device of the intermediate rolling mill provided by the utility model, see Figure 2 Both ends of the sliding sleeve 62 are respectively provided with a stop 621 protruding toward the outer periphery, and the outer periphery of the sliding sleeve 62 is provided with a connecting support 622. A third elastic member 64 is connected between the stop 621 and the connecting support 622. The third elastic member 64 is sleeved on the outer periphery of the sliding sleeve 62, and the push rod 632 is hingedly connected to the connecting support 622.

[0046] In this embodiment, after the roller changing operation is completed, the support unit 6 is used to adjust the spacing of the universal joint to the spacing required for the working state. At this time, the adjusting screw 61 is braked, and the up and down movement of the shaft sleeve 21 is converted into the axial movement of the connecting support 622 along the sliding sleeve 62 through the push rod assembly 63, thereby causing the third elastic member 64 to undergo elastic deformation, which not only provides a buffering effect, but also because the two corresponding push rods 632 are hinged to the same connecting support 622, the upper and lower shaft sleeves 21 can move synchronously and symmetrically.

[0047] To adjust the distance between the universal joints, the brake on adjusting screw 61 is released and the adjusting screw 61 is rotated, causing the two sliding sleeves 62 to move closer to or away from each other. The corresponding section of the third elastic member 64 is compressed to push the connecting support 622, which in turn drives the shaft sleeve 21 through the push rod assembly 63. The structural arrangement of this embodiment eliminates the need to separate the connecting member 631 from the shaft sleeve 21. The provision of the supporting unit 6 not only allows the position of the shaft sleeve 21 to be adjusted at any time, but also acts as a symmetrical buffer, thereby improving the practicality of the device.

[0048] As a specific embodiment of the universal shaft bracket device of the intermediate rolling mill provided by the utility model, see Figure 4 The connecting member 631 includes a connecting seat 6311 and a connecting block 6312. The connecting seat 6311 is hinged to the two push rods 632 in the same group of push rod assemblies 63 respectively. The connecting block 6312 is hinged to the connecting seat 6311 through a hinge axis. The hinge axis is arranged perpendicular to the central axis of the shaft sleeve 21. The connecting block 6312 is connected to the outer peripheral wall of the shaft sleeve 21. The connecting block 6312 can swing vertically around the hinge axis.

[0049] In this embodiment, to simplify installation, the connecting block 6312 can be fixedly connected to the shaft sleeve 21, and the push rod assembly 63 can drive the shaft sleeve 21 to move up and down via the connecting block 6312. The hinge axis is arranged perpendicular to the central axis of the shaft sleeve 21, so that the hinge direction of the connecting block 6312 and the connecting seat 6311 is perpendicular to the hinge direction of the push rod 632 and the connecting seat 6311. This allows the connecting block 6312 to swing with the shaft sleeve 21 within a vertical plane perpendicular to the adjusting screw 61, meeting the angular displacement requirements of the universal joint in pitch and roll, thereby improving the practicality of the device.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A universal shaft bracket device for a medium rolling mill, characterized in that: The cam is connected to the bottom bracket of the chassis and the bottom bracket is connected to the chassis, and the cam is connected to the bottom bracket by a screw thread, and the cam is connected to the bottom bracket by a screw thread.

2. A universal shaft bracket device for an intermediate rolling mill as claimed in claim 1, characterized in that: The upper support shaft sleeve and the lower support shaft sleeve both include a shaft sleeve sleeved on the outer periphery of the universal shaft and two support shafts symmetrically connected on both sides of the shaft sleeve. The outer peripheries of the two support shafts of the upper support shaft sleeve are rotatably connected to an upper slider that slides with the bracket body, and the outer peripheries of the two support shafts of the lower support shaft sleeve are rotatably connected to a lower slider that slides with the bracket body. The upper buffer unit is set in a one-to-one correspondence with the upper slider, and the lower buffer unit is set in a one-to-one correspondence with the lower slider.

3. A universal shaft bracket device for an intermediate rolling mill as claimed in claim 2, characterized in that: The upper buffer unit includes an upper guide rod, a first elastic member and a first crimping member. The upper guide rod is connected to the upper slider and is arranged to pass through the top wall of the bracket body upward, and the upper guide rod is slidably matched with the bracket body. The first crimping member is sleeved on the outer periphery of the upper guide rod. The first elastic member is sleeved on the outer periphery of the upper guide rod and elastically abuts between the first crimping member and the top wall of the bracket body.

4. A universal shaft bracket device for an intermediate rolling mill as claimed in claim 3, characterized in that: The lower buffer unit includes a lower guide rod, a second elastic member and a second crimping member. The lower guide rod is connected to the lower support sleeve and is slidably connected to the side wall of the bracket body along the up and down directions. The second crimping member is sleeved on the outer periphery of the lower guide rod. The second elastic member is sleeved on the outer periphery of the lower guide rod and elastically abuts between the second crimping member and the side wall of the bracket body.

5. A universal shaft bracket device for an intermediate rolling mill as claimed in claim 4, characterized in that: The outer end of the support shaft of the lower support sleeve is threadedly connected to a horizontally extending connecting screw, which passes through the side wall of the bracket body. A connecting sleeve is provided on the outer periphery of the connecting screw, and the lower end of the lower guide rod is connected to the connecting sleeve.

6. A universal shaft bracket device for an intermediate rolling mill as claimed in claim 4, characterized in that: The first crimping member and the second crimping member both include a locking nut threadedly connected to the outer periphery of the upper guide rod or the lower guide rod and a baffle sleeved on the outer periphery of the upper guide rod or the lower guide rod, and the baffle is used to press the first elastic member or the second elastic member under the pushing action of the locking nut.

7. The universal shaft bracket device of the intermediate rolling mill according to claim 2, characterized in that: The supporting unit includes an adjusting screw, two sliding sleeves and two groups of push rod assemblies. The adjusting screw is connected to the bracket body in a rotatable manner in a horizontal direction. The two sliding sleeves are respectively threadedly sleeved on the outer periphery of the adjusting screw and are respectively arranged near the two ends of the adjusting screw. The two groups of push rod assemblies are respectively located on the upper and lower sides of the adjusting screw and are respectively arranged in one-to-one correspondence with the two shaft sleeves. The push rod assembly includes a connecting piece connected to the shaft sleeve and two push rods symmetrically hinged on the connecting piece. The two push rods in each group of the push rod assemblies are respectively hingedly connected to the two sliding sleeves in a one-to-one correspondence. One end of the adjusting screw is arranged through the side wall of the bracket body and is connected to a handwheel.

8. A universal shaft bracket device for an intermediate rolling mill as claimed in claim 7, characterized in that: The connecting member is an electromagnet, and the connecting member can be magnetically adsorbed to the shaft sleeve.

9. The universal joint bracket device of the intermediate rolling mill according to claim 7, characterized in that: Both ends of the sliding sleeve are respectively provided with a stop platform protruding toward the outer periphery, the outer periphery of the sliding sleeve is provided with a connecting support, a third elastic member is connected between the stop platform and the connecting support, the third elastic member is sleeved on the outer periphery of the sliding sleeve, and the push rod is hingedly connected to the connecting support.

10. The universal joint bracket device for an intermediate rolling mill according to claim 8, characterized in that: The connecting member includes a connecting seat and a connecting block. The connecting seat is hinged to the two push rods in the same group of the push rod assembly respectively. The connecting block is hinged to the connecting seat through a hinge shaft. The hinge shaft is arranged perpendicular to the central axis of the shaft sleeve. The connecting block is connected to the outer peripheral wall of the shaft sleeve. The connecting block can swing vertically around the hinge shaft.

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