Connecting shaft bracket and steel rolling production line

Abstract

The connecting shaft bracket comprises a sleeve body and a bearing sleeve, the sleeve body is of an integrally-formed structure, a connecting part is arranged on the front section of the sleeve body, and a roller hole is formed in the rear section of the sleeve body; a bearing sleeve is arranged on the periphery of the sleeve body, and a bearing unit is arranged between the bearing sleeve and the sleeve body. According to the connecting shaft bracket and the steel rolling production line, the sleeve body is directly made into an integral structure, so that the defect that a bolt is easily cut by a flat-head sleeve is fundamentally overcome, the stability and the safety of the connecting shaft bracket can be greatly improved, and the product production efficiency is effectively improved; in addition, the position of the threaded sleeve can be rapidly adjusted by rotating the round nut, and on the premise that the length of the bearing sleeve is suitable, the design can be compatible with installation of bearing units with different lengths.

Description

Technical Field

[0001] This utility model relates to the field of steel section rolling technology, and in particular to a shaft support bracket and a steel rolling production line. Background Technology

[0002] As a widely used material, the level of steel production is an important indicator of a country's modernization level. In recent years, with the rapid development of my country's steel product market, hot-rolled steel has been widely used due to its excellent mechanical properties in civil construction, industrial construction, bridge construction, industrial applications, underground railways, and industrial steel structural components.

[0003] With the increasing demand for both the output and quality of structural steel, manufacturers have higher requirements for the rolling mills used in the production of structural steel. As an important component of the universal rolling mill on the structural steel production line, the universal joint bracket is located on the transmission side of the universal rolling mill. It is used to transmit the torque of the universal joint and balance the weight of the universal joint, eliminating the interference of the instability of the gearbox and the universal joint on the rolling process.

[0004] See appendix Figure 3 As shown, Figure 3 A schematic diagram of a flat-head sleeve for an existing shaft connector bracket is shown. It mainly consists of an inner spline sleeve and an outer spline sleeve, which are fixed together by bolts. However, in actual production, the flat-head sleeve of the shaft connector bracket has the defect that the bolts are easily cut off, resulting in a significant reduction in production efficiency and productivity.

[0005] Therefore, how to solve the defects of cutting bolts, increase the safety and stability of equipment, and improve production efficiency has become an important problem that urgently needs to be solved. Utility Model Content

[0006] The purpose of this utility model is to provide a shaft connector bracket and a steel rolling production line. By making the original split flat-head sleeve into a whole, the defect of easy-to-cut bolts in the flat-head sleeve is fundamentally solved, greatly increasing the stability of the shaft connector bracket, thereby improving production efficiency and ensuring product specifications.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A coupling bracket, comprising:

[0009] The sleeve body is an integrally formed structure, with a connecting part at the front and a roller hole at the rear.

[0010] A bearing sleeve is disposed on the outer periphery of the sleeve body, and a bearing unit is provided between the bearing sleeve and the sleeve body.

[0011] In some embodiments, the sleeve body is provided with a first stepped surface and a second stepped surface with decreasing outer diameter from front to back.

[0012] The bearing sleeve portion is disposed on the first stepped surface, the bearing unit is disposed on the second stepped surface, and the thickness difference between the first and second stepped surfaces is smaller than the outer ring thickness of the bearing unit.

[0013] In some embodiments, a pressing component is provided behind the bearing sleeve to confine the bearing unit within the bearing sleeve.

[0014] In some embodiments, the pressure-absorbing component includes:

[0015] A threaded sleeve is disposed on the outer periphery of the sleeve body, and the threaded sleeve is used to press against the inner ring of the bearing unit;

[0016] A round nut is disposed on the outer periphery of the threaded sleeve and threadedly connected thereto;

[0017] An end cap is disposed on the outer periphery of the round nut, and the end cap is used to press against the outer ring of the bearing unit;

[0018] A semi-ring is located behind the round nut and is partially embedded in the sleeve body.

[0019] In some embodiments, a pressure block is provided between the round nut and the semi-ring.

[0020] In some embodiments, the end cap is provided with an oil injection hole that extends to the bearing unit.

[0021] In some embodiments, a first sealing ring is provided between the front end of the bearing sleeve and the sleeve body, and a second sealing ring is provided between the round nut and the end cap.

[0022] In some embodiments, both the first and second sealing rings are lip-shaped sealing rings.

[0023] In some embodiments, the bearing unit includes at least two bearings, wherein a spacer ring is provided between adjacent bearings.

[0024] A steel rolling production line includes the aforementioned shaft support bracket.

[0025] Compared with the prior art, the beneficial effects of this utility model include at least the following:

[0026] 1. By making the sleeve body into a single integral structure, the defect of easy-to-cut bolts in flat-head sleeves is fundamentally solved. This method can greatly increase the stability and safety of the shaft bracket and effectively improve the efficiency of product production.

[0027] 2. The position of the threaded sleeve can be quickly adjusted by rotating the round nut. Provided that the bearing sleeve length is suitable, this design can accommodate the installation of bearing units of different lengths. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of the shaft bracket of this utility model.

[0029] Figure 2 This is a schematic diagram of the structure of the pressure-reducing component of this utility model.

[0030] Figure 3 This is a schematic diagram of the structure of a connecting shaft bracket in the prior art.

[0031] In the figure: 1. Sleeve body; 11. Connecting part; 12. Roll hole; 13. First stepped surface; 14. Second stepped surface; 2. Bearing sleeve; 3. Bearing unit; 31. Bearing; 32. Spacer ring; 4. Pressing assembly; 41. Threaded sleeve; 42. Round nut; 43. End cover; 431. Oil injection hole; 44. Half ring; 45. Pressure block; 46. First sealing ring; 47. Second sealing ring; 5. Inner spline sleeve; 6. Outer spline sleeve. Detailed Implementation

[0032] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore repeated descriptions of them will be omitted.

[0033] The terms used to describe position and direction in this utility model are illustrated with the accompanying drawings, but changes can be made as needed, and all such changes are included within the scope of protection of this utility model.

[0034] See Figure 1 As shown, this utility model discloses a shaft support bracket, including a sleeve body 1, a bearing sleeve 2, and a bearing unit 3.

[0035] The sleeve body 1 is an integrally formed structure. Its front section is provided with a connecting part 11 for connecting the universal joint (not shown) on the transmission side of the rolling mill, and its rear section is provided with a roll hole 12 for connecting with the shaft head of the insert roll. The torque required for rolling is transmitted through the extrusion of the sleeve body 1.

[0036] The bearing sleeve 2 is set on the outer periphery of the sleeve body 1, and a bearing unit 3 is provided between the bearing sleeve 2 and the sleeve body 1 to realize the relative rotation between the sleeve body 1 and the bearing sleeve 2. The bearing sleeve 2 restricts the radial runout of the sleeve body 1 to reduce free runout and extend the service life of the shaft bracket.

[0037] Compared to the existing flat-head sleeves (inner and outer spline sleeve combination) of the shaft connector bracket, the shaft connector bracket of this application directly makes the sleeve body 1 into an integral structure, which fundamentally solves the defect of easy cutting of bolts by the flat-head sleeve. This method can greatly increase the stability and safety of the shaft connector bracket and effectively improve the efficiency of product production.

[0038] Or as Figure 1 As shown, in this shaft bracket, the sleeve body 1 is provided with a first stepped surface 13 and a second stepped surface 14 with decreasing outer diameters from front to back. The bearing sleeve 2 is partially disposed on the first stepped surface 13, and its inner corner is used to press against the (front) outer ring of the bearing unit 3. The bearing unit 3 is disposed on the second stepped surface 14, and the thickness difference between the first and second stepped surfaces 14 and 15 is smaller than the thickness of the outer ring of the bearing unit 3, thereby forming a stepped structure for pressing against the (front) inner ring of the bearing unit 3.

[0039] See you later Figure 2 As shown, a pressing component 4 is provided at the rear of the bearing sleeve 2 to confine the bearing unit 3 within the bearing sleeve 2, thereby achieving the installation and fixation of the bearing unit 3.

[0040] Specifically, the pressing assembly 4 includes a threaded sleeve 41, a round nut 42, an end cap 43, and a semi-ring 44. The threaded sleeve 41 is located on the outer periphery of the sleeve body 1 and presses against the (rear) inner ring of the bearing unit 3; the threaded sleeve 41 is axially slidable. The round nut 42 is located on the outer periphery of the threaded sleeve 41 and is threadedly connected to it. By rotating the round nut 42, the threaded sleeve 41 can be moved back and forth, thereby tightening the inner rings of bearing units 3 of different lengths. The end cap 43 is located on the outer periphery of the round nut 42 and presses against the (rear) outer ring of the bearing unit 3; the end cap 43 can be fixed in position by being bolted to the bearing sleeve 2. The semi-ring 44 is located behind the round nut 42 and partially embedded in the sleeve body 1; it is used to tightly press against the round nut 42, keeping its position fixed.

[0041] When assembling bearing unit 3, place bearing unit 3 inside bearing sleeve 2, with its front side abutting against the inner corner and stepped structure of bearing sleeve 2, and its rear side abutting against end cover 43 and threaded sleeve 41. For bearing units 3 of different lengths (different numbers of bearings 31), provided that the length of bearing sleeve 2 is applicable, the position of threaded sleeve 41 can be quickly adjusted simply by using round nut 42, which is convenient to operate and has good versatility.

[0042] In some embodiments, a pressure block 45 is provided between the round nut 42 and the half ring 44. When the bearing unit 3 is long, the forward movement of the round nut 42 will cause a gap between it and the half ring 44. The pressure block 45 can play the role of length compensation and anti-return, so that the position of the moved round nut 42 remains unchanged, thereby improving the stability of the bearing unit 3 after installation.

[0043] In some embodiments, the end cap 43 is provided with an oil injection hole 431, which extends to the bearing unit 3 for lubricating the bearing unit 3 with oil and reducing wear during use. Of course, in other embodiments, the oil injection hole 431 may also be provided on the bearing sleeve 2 (not shown), but regardless of the location of the oil injection hole 431, the hole must be in a blocked state during operation.

[0044] In some embodiments, a first sealing ring 46 is provided between the front end of the bearing sleeve 2 and the sleeve body 1, and a second sealing ring 47 is provided between the round nut 42 and the end cap 43, so as to prevent dust and oil leakage and extend the service life of the bearing unit 3.

[0045] Preferably, both the first sealing ring 46 and the second sealing ring 47 are lip seals, whose sealing surfaces can make close contact with the mating surfaces to achieve zero leakage and ensure the sealing performance of the bearing sleeve 2. In addition, the lip seals have good corrosion resistance and a long service life even under harsh working conditions.

[0046] In some embodiments, the bearing unit 3 includes at least two bearings 31. In this application, the bearings 31 may be deep groove ball bearings 31, which have high load-bearing capacity and can meet large radial and axial loads. In addition, a spacer ring 32 is provided between adjacent bearings 31 to form an effective gap to reduce friction and wear and ensure the normal operation of the bearings 31.

[0047] This utility model also discloses a steel rolling production line, including the aforementioned shaft bracket. By optimizing the structure of the flat-head sleeve, the production line solves the defect of the existing flat-head sleeve easily cut bolt, increases the stability and safety of the production line, and effectively improves production efficiency.

[0048] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and alterations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention, and all such changes should fall within the protection scope of the claims of the present invention.

Claims

1. A shaft bracket, characterized in that, include: The sleeve body (1) is an integrally formed structure, with a connecting part (11) at the front and a roller hole (12) at the rear. A bearing sleeve (2) is disposed on the outer periphery of the sleeve body (1), and a bearing unit (3) is provided between the bearing sleeve (2) and the sleeve body (1). A pressure-retaining component (4) is disposed behind the bearing sleeve (2) to confine the bearing unit (3) within the bearing sleeve (2); The pressure-reducing component (4) includes: A threaded sleeve (41) is disposed on the outer periphery of the sleeve body (1), and the threaded sleeve (41) is used to press against the inner ring of the bearing unit (3); A round nut (42) is disposed on the outer periphery of the threaded sleeve (41) and threadedly connected thereto; An end cap (43) is disposed on the outer periphery of the round nut (42), and the end cap (43) is used to press against the outer ring of the bearing unit (3); A semi-ring (44) is located behind the round nut (42) and is partially embedded in the sleeve body (1).

2. The shaft bracket according to claim 1, characterized in that, The sleeve body (1) is provided with a first stepped surface (13) and a second stepped surface (14) with decreasing outer diameter from front to back. The bearing sleeve (2) is partially disposed on the first stepped surface (13), the bearing unit (3) is disposed on the second stepped surface (14), and the thickness difference between the first and second stepped surfaces (13, 14) is smaller than the outer ring thickness of the bearing unit (3).

3. The shaft bracket according to claim 1, characterized in that, A pressure block (45) is provided between the round nut (42) and the half ring (44).

4. The shaft bracket according to claim 3, characterized in that, The end cap (43) is provided with an oil injection hole (431), which extends to the bearing unit (3).

5. The shaft bracket according to claim 1, characterized in that, A first sealing ring (46) is provided between the front end of the bearing sleeve (2) and the sleeve body (1), and a second sealing ring (47) is provided between the round nut (42) and the end cap (43).

6. The shaft bracket according to claim 5, characterized in that, Both the first and second sealing rings (46 and 47) are lip-shaped sealing rings.

7. The coupling bracket according to claim 1, characterized in that, The bearing unit (3) includes at least two bearings (31), wherein a spacer (32) is provided between adjacent bearings (31).

8. A steel rolling production line, characterized in that, Includes the coupling bracket as described in any one of claims 1-7.

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