Bearing Installation Structure of Open Mill

Abstract

The present invention provides a bearing installation structure for an open mill, which enables the axial expansion and contraction of the installation shaft to be stable and reliable during temperature changes, and does not damage the connection between the bearing and the connecting shaft, ensuring the long-term stable operation of the entire structure and accurate acquisition of the expansion and contraction accuracy. Corresponding bearings are sleeved at both ends of the length of the installation shaft, and a bearing seat is arranged on the outer periphery of each bearing. The bottom of the bearing seat is supported on the support frame. A guide seat protrudes upward from the top of each bearing seat, and a fixed connection plate is arranged inside each guide seat. The fixed connection plate is fixedly connected to an external fixed structure. The fixed connection plate is provided with a laterally protruding guide rod. A guide hole is arranged on the guide seat, and the guide rod is inserted into the guide hole and protrudes outward. The guide rod is arranged parallel to the installation shaft. An external fixed seat is arranged on the outer side of one of the guide seats, and a locking bolt of the external fixed seat penetrates through a radial through hole of the guide rod.

Description

Technical Field

[0001] The present invention relates to the technical field of the structure of an open mill, and specifically to a bearing mounting structure of an open mill. Background Art

[0002] At the connecting ends of the installation shafts of the existing open mills, bearings are respectively fixedly provided. The bearings are placed in corresponding bearing seats. Since the temperature is relatively high when the open mill is working, the installation shafts will produce a small amount of axial expansion and contraction. Therefore, in the prior art during installation, a certain expansion gap is reserved between one end face of one bearing and the corresponding end face of the bearing seat, so that there is a margin for movement when the installation shaft expands and contracts axially. In this existing structure, the bearing and the bearing seat slide, and after long-term use, the sliding area will be worn, which is not easy to repair, and further leads to the failure of the entire bearing; and since the margin for movement is built into the bearing seat, the accuracy of the axial expansion and contraction cannot be accurately obtained. Summary of the Invention

[0003] In view of the above problems, the present invention provides a bearing mounting structure for an open mill, which enables the axial expansion and contraction of the installation shaft to be stable and reliable during the temperature change process, and does not damage the connection between the bearing and the connecting shaft, ensuring the long-term stable operation of the entire structure and enabling the expansion and contraction accuracy to be accurately obtained.

[0004] The bearing mounting structure of an open mill is characterized in that: it includes an installation shaft, corresponding bearings are sleeved at both ends of the installation shaft in the length direction, a bearing seat is arranged on the outer periphery of each bearing, the bottom of the bearing seat is supported on a support frame, a guiding seat protrudes upward from the top of each bearing seat, a fixed connection plate is arranged inside each guiding seat, the fixed connection plate is fixedly connected to an external fixed structure, the fixed connection plate is provided with a laterally protruding guiding rod, a guiding hole is arranged on the guiding seat, the guiding rod is inserted into the guiding hole and protrudes outward, the guiding rod is arranged parallel to the installation shaft, an external fixed seat is arranged on the outside of one of the guiding seats, a locking bolt of the external fixed seat penetrates through a radial through hole of the guiding rod, and a bearing is fixedly installed in the cavity formed by the bearing seat and the installation shaft.

[0005] It further has the following characteristics:

[0006] A first stop structure is arranged on the installation shaft corresponding to the outer end face of the inner ring of the bearing, and the inner end face of the first stop structure is closely attached to the outer end face of the inner ring of the bearing. The bearing seat includes a bearing housing, an inner end cover, and an outer end cover. The inner end cover is provided with a press-fitting convex ring, and the press-fitting convex ring abuts against the inner end face of the outer end of the bearing, ensuring the stable and reliable position of the bearing;

[0007] A guide seat is welded and connected to the upper part of the bearing housing. Corresponding guide holes are respectively arranged on the two side plates of the guide seat. An external fixing seat is fixedly installed on the outer side plate of one of the guide seats. A locking bolt is arranged on the external fixing seat. A driving runner is arranged on the upper part of the locking bolt. The locking bolt is vertically inserted into a radially penetrating hole to ensure the position fixation of the bearing seat at one end of the installation shaft.

[0008] A guide rail pair is arranged at the bottom of the bearing seat without an external fixing seat. The guide rail pair is embedded in the slide rail on the support frame to ensure the stable and reliable axial movement of the bearing seat relative to the installation shaft.

[0009] After adopting the present invention, the bearings at both ends of the installation shaft are respectively fixedly installed on the corresponding bearing seats. The bearing seat at one end is fixedly connected to the guide rod through an external fixing structure, and the bearing seat at the other end can axially shift along the guide rod. When the installation shaft axially expands and contracts due to temperature changes, the installation shaft drives the bearings, and further drives the bearing seats to expand and contract towards the other end. Since the bearing seats and the bearings move synchronously during expansion and contraction, it makes the axial expansion and contraction of the installation shaft stable and reliable during temperature changes, and will not damage the connection between the bearings and the connecting shaft, ensuring the long-term stable operation of the entire structure and the accurate acquisition of the expansion and contraction accuracy. Description of the Drawings

[0010] Figure 1 is the front view sectional structure schematic diagram of the present invention;

[0011] Figure 2 is Figure 1 the partial enlarged structure schematic diagram at A of

[0012] The names corresponding to the numbers in the figure are as follows:

[0013] Installation shaft 1, bearing 2, inner ring 21, outer ring 22, bearing seat 3, bearing housing 31, inner end cover 32, outer end cover 33, press-fitting convex ring 34, support frame 4, slide rail 41, guide seat 5, side plate 51, fixed connection connecting plate 6, guide rod 7, guide hole 8, external fixing seat 9, first stop structure 10, locking bolt 11, driving runner 12, guide rail pair 13. Detailed Embodiment

[0014] The bearing installation structure of the open mill is shown in Figure 1 、 Figure 2: It includes a mounting shaft 1. At both ends of the mounting shaft 1 in the length direction, corresponding bearings 2 are sleeved. On the outer circumference of each bearing 2, a bearing housing 3 is provided. The bottom of the bearing housing 3 is supported on a support frame 4. On the top of each bearing housing 3, a guiding seat 5 protrudes upwards. Inside each guiding seat 5, a fixed connection plate 6 is provided. The fixed connection plate 6 is fixedly connected to an external fixed structure (not shown in the figure and belonging to the fixed structure of the internal mixer). The fixed connection plate 6 is provided with a laterally protruding guiding rod 7. On the guiding seat 5, a guiding hole 8 is provided. The guiding rod 7 is inserted into the guiding hole 8 and protrudes outwards. The guiding rod 7 is arranged parallel to the mounting shaft 1. On the outer side of one of the guiding seats 5, an external fixed seat 9 is provided. The locking bolt 11 of the external fixed seat 9 is arranged through the radial through hole of the guiding rod 7. The bearing 2 is fixedly installed in the cavity formed by the bearing housing 3 and the mounting shaft 1.

[0015] At the outer end face of the inner ring 21 of the bearing 2 corresponding to the mounting shaft 1, a first stop structure 10 is provided. The inner end face of the first stop structure 10 is closely attached to the outer end face of the inner ring 21 of the bearing 2. The bearing housing 3 includes a bearing box body 31, an inner end cover 32, and an outer end cover 33. The inner end cover 32 is provided with a press-fitting convex ring 34. The press-fitting convex ring 34 is pressed against the inner end face of the outer end 22 of the bearing 2, ensuring the stable and reliable position of the bearing 2.

[0016] On the upper part of the bearing box body 31, the guiding seat 5 is welded. On the two side plates 51 of the guiding seat 5, corresponding guiding holes 8 are respectively provided. On the side plate 51 on the outer side of one of the guiding seats 5, the external fixed seat 9 is fixedly installed. On the external fixed seat 9, a locking bolt 11 is provided. On the upper part of the locking bolt 11, a driving runner 12 is provided. The locking bolt 11 is vertically inserted through the radial through hole of the guiding rod 7, ensuring the fixed position of the bearing housing 3 at one end of the mounting shaft 1.

[0017] At the bottom of the bearing housing 3 without the external fixed seat 9, a guide rail pair 13 is provided. The guide rail pair is installed in the slide rail 41 on the support frame 4, ensuring the stable and reliable axial movement of the bearing housing 3 relative to the mounting shaft 1.

[0018] In the specific embodiment, the bearing 2 is a double-row tapered roller bearing.

[0019] Its working principle is as follows: The bearings at both ends of the mounting shaft are fixedly installed in the corresponding bearing housings. One of the bearing housings is fixedly connected to the guiding rod through an external fixed structure, and the other bearing housing can axially offset along the guiding rod. When the mounting shaft axially expands and contracts due to temperature changes, the mounting shaft drives the bearings, and then drives the bearing housings to expand and contract towards the other end. Since the bearing housings and the bearings move synchronously during the expansion and contraction, it makes the axial expansion and contraction of the mounting shaft stable and reliable during the temperature change process, and will not damage the connection between the bearings and the connecting shaft, ensuring the long-term stable operation of the entire structure and the accurate acquisition of the expansion and contraction accuracy.

[0020] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0021] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Bearing installation structure of an open mill, characterized in that: It includes a mounting shaft, corresponding bearings are sleeved at both ends of the mounting shaft in terms of length, bearing seats are arranged on the outer periphery of each bearing, the bottom of each bearing seat is supported on a support frame, a guiding seat protrudes upward at the top of each bearing seat, a fixed connection plate is arranged inside each guiding seat, the fixed connection plate is fixedly connected to an external fixed structure, the fixed connection plate is provided with a laterally protruding guiding rod, a guiding hole is arranged on the guiding seat, the guiding rod is inserted and arranged in the guiding hole and protrudes outside, the guiding rod is arranged parallel to the mounting shaft, an external fixed seat is arranged on the outside of one of the guiding seats, and a locking bolt of the external fixed seat penetrates through a radial through-hole of the guiding rod, and a bearing is fixedly installed in a cavity formed by the bearing seat and the mounting shaft; The mounting shaft is provided with a first stop structure corresponding to the outer end face of the inner ring of the bearing; A guide rail pair is arranged at the bottom of the bearing seat without an external fixed seat, and the guide rail pair is installed in a slide rail on the support frame.

2. The bearing mounting structure of the open mill according to claim 1, wherein: The inner end face of the first stop structure is closely arranged against the outer end face of the inner ring of the bearing. The bearing seat includes a bearing box body, an inner end cover, and an outer end cover. The inner end cover is provided with a press-fitting convex ring, and the press-fitting convex ring is pressed against the inner end face of the outer end of the bearing.

3. The bearing mounting structure of the kneader according to claim 2, characterized in that: The upper part of the bearing box body is welded and connected with a guiding seat. Corresponding guiding holes are respectively arranged on the two side plates of the guiding seat. An external fixed seat is fixedly installed on the side plate on the outside of one of the guiding seats. A locking bolt is arranged on the external fixed seat, a driving runner is arranged on the upper part of the locking bolt, and the locking bolt is vertically inserted and arranged in a radial through-hole.

Images