Non-shaft extension end convenient core-pulling type automatic centering bearing component and fan rotor

Abstract

The invention relates to the field of high-speed heavy-load double-suction centrifugal fans, in particular to a non-shaft extension end convenient core-pulling type automatic centering bearing component and a fan rotor. According to the non-shaft extension end convenient core-pulling type automatic centering bearing component, the whole bearing chamber is a cylinder, and a semicircular flange is arranged on the lower portion of the cylinder; the outer side bearing gland is of a whole circle structure and is connected with the outer side face of the bearing chamber. The inner side bearing gland is connected with the inner side surface of the bearing chamber; the inner side bearing gland adopts a center-split type and is formed by butting an inner side upper half part bearing gland and an inner side lower half part bearing gland; the two rolling bearings are installed on the bearing sleeve in an interference mode and separated through the bearing spacer ring, the bearing sleeve is arranged in the bearing chamber, the grease nipple is arranged on the top of the bearing chamber, and the lower end of the grease nipple is aligned with the bearing spacer ring. And the bearing sleeve is fixed on the shaft by the bearing sleeve pressing ring. The rolling bearing is convenient to disassemble and assemble, the problem that the rolling bearing is stressed abnormally due to the fact that the concentricity of the bearing seats at the two ends cannot be guaranteed is solved, and equipment reliability is high.

Description

Technical Field

[0001] The invention relates to the field of high-speed and heavy-load double-suction centrifugal fans, and in particular to a non-shaft extension end convenient core-pulling type automatic centering bearing component and a fan rotor. Background Art

[0002] In major projects such as large power stations, high-speed, heavy-load, double-suction centrifugal fans are widely used electromechanical equipment. Their main function is to provide forced ventilation to relevant areas, and their reliability is very important.

[0003] At present, the rotor parts of common high-speed and heavy-load double-suction centrifugal fans are supported at both ends, and the supporting parts at both ends are basically equipped with split-type flat base bearing seats, but there are the following problems in actual engineering applications:

[0004] 1. The split flat base bearing seats at both ends cannot ensure concentricity, resulting in abnormal force on the rolling bearings installed in the bearing seats and aggravated wear and failure, seriously affecting the reliability of the equipment.

[0005] 2. The inner ring of the rolling bearing is directly installed on the fan shaft with interference fit. When carrying out equipment maintenance, special tools are required to disassemble and assemble the rolling bearing in a narrow space, which is very inconvenient.

[0006] Therefore, it is necessary to develop a convenient core-pulling automatic centering bearing component at the non-shaft extension end to effectively solve the above problems and ensure the reliability of the equipment. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a non-shaft extension end convenient core-pulling automatic centering bearing component and a fan rotor, which is convenient for disassembly and assembly of the rolling bearing, avoids abnormal force problems of the rolling bearing caused by the inability to ensure concentricity of the bearing seats at both ends, and ensures the reliability of the equipment.

[0008] The present invention provides a non-shaft extension end convenient core-pulling type automatic centering bearing component, comprising: an outer bearing gland, a bearing chamber, an inner bearing gland,

[0009] The bearing chamber is a cylindrical body with a semicircular flange at the bottom.

[0010] The outer bearing gland is a full-circle structure and is connected to the outer side of the bearing chamber;

[0011] The inner bearing gland is connected to the inner side of the bearing chamber;

[0012] The inner bearing gland is of center split type, consisting of the inner upper half bearing gland and the inner lower half bearing gland connected together;

[0013] Two rolling bearings are installed on the bearing sleeve with interference fit, and the two rolling bearings are separated by a bearing spacer ring.

[0014] The bearing sleeve is arranged in the bearing chamber.

[0015] A grease nipple is provided on the top of the bearing chamber, and the lower end of the grease nipple is aligned with the bearing spacer ring;

[0016] The bearing sleeve retaining ring secures the bearing sleeve to the shaft.

[0017] In a specific embodiment of the present invention, a full-circular boss is machined on the inner side of the outer bearing cover for axially limiting the outer side of the rolling bearing.

[0018] In a specific embodiment of the present invention, a semicircular boss is processed on the inner side of the inner lower half bearing cover for positioning in coordination with the arc of the bearing chamber.

[0019] In a specific embodiment of the present invention, a felt ring is provided at the inner side of the inner bearing gland where it contacts the shaft.

[0020] In a specific embodiment of the present invention, the bearing sleeve is a bilaterally symmetrical L-shaped sleeve; a keyway is machined in the inner hole of the bearing sleeve for transmitting torque through the key and the shaft.

[0021] In a specific embodiment of the present invention, the round nut locks the bearing sleeve compression ring, and a round nut locking gasket is arranged between the round nut and the bearing sleeve compression ring.

[0022] In a specific embodiment of the present invention, the inner upper half bearing cover and the inner lower half bearing cover are connected by bolts.

[0023] In a specific embodiment of the present invention, a bearing sleeve adjusting ring is further included. The bearing sleeve adjusting ring is arranged in the bearing sleeve, close to a side of the inner bearing gland.

[0024] The present invention provides a fan rotor, comprising: a convenient core-pulling automatic centering bearing component whose fixed end is the non-shaft extension end described in the above technical solution;

[0025] The shaft and the shaft extension end have convenient core-pulling automatic centering bearing components and the two end support bearing components have automatic centering integral supports;

[0026] The two ends of the shaft are respectively inserted into the convenient core-pulling automatic centering bearing component at the shaft extension end and the convenient core-pulling automatic centering bearing component at the non-shaft extension end;

[0027] The convenient core-pulling automatic centering bearing component at the shaft extension end and the convenient core-pulling automatic centering bearing component at the non-shaft extension end are fixed on the automatic centering integral support of the supporting bearing components at both ends.

[0028] In a specific embodiment of the present invention, the floating end of the fan rotor is a convenient core-pulling automatic centering bearing component at the shaft extension end;

[0029] The convenient core-pulling automatic centering bearing component at the shaft extension end comprises:

[0030] The inner bearing cover of the swimming end, the bearing chamber of the swimming end, the outer bearing cover of the swimming end,

[0031] The whole of the movable end bearing chamber is a cylinder, and the lower part of the cylinder is a semicircular flange;

[0032] The inner bearing gland of the swimming end and the outer bearing gland of the swimming end are respectively connected to the inner side and the outer side of the bearing chamber of the swimming end;

[0033] The inner bearing gland of the swimming end is of center split type, which is composed of the upper inner bearing gland of the swimming end and the lower inner bearing gland of the swimming end.

[0034] The outer bearing gland of the swimming end is of the middle split type, consisting of the upper outer bearing gland of the swimming end and the lower outer bearing gland of the swimming end;

[0035] The two rolling bearings are installed on the floating end bearing sleeve with interference fit, and the two rolling bearings are separated by the floating end bearing spacer ring.

[0036] The movable end bearing sleeve is arranged in the movable end bearing chamber.

[0037] A grease nipple is provided on the top of the movable end bearing chamber, and the lower end of the grease nipple is aligned with the movable end bearing spacer ring;

[0038] The movable end bearing sleeve press ring fixes the movable end bearing sleeve on the shaft.

[0039] Compared with the prior art, the non-shaft extension end convenient core-pulling type automatic centering bearing component and the fan rotor of the present invention have the following beneficial effects:

[0040] (1) The non-shaft extension end convenient core-pulling automatic centering bearing component of the present invention can fundamentally solve the problem that the bearing seats at both ends cannot ensure concentricity, resulting in abnormal force on the rolling bearing and aggravated wear and failure;

[0041] (2) The non-axial extension end convenient core-pulling type automatic centering bearing component of the present invention can fundamentally solve the problem of inconvenient disassembly and assembly of rolling bearings. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A two-dimensional general assembly diagram of a non-shaft extension end convenient core-pulling automatic centering bearing component provided by the present invention;

[0043] Figure 2 A three-dimensional general assembly diagram of a non-shaft extension end convenient core-pulling automatic centering bearing component provided by the present invention;

[0044] Figure 3A three-dimensional diagram of a bearing chamber of a non-shaft extension end convenient core-pulling automatic centering bearing component provided by the present invention;

[0045] Figure 4 A three-dimensional diagram of the outer bearing gland of a non-shaft extension end convenient core-pulling automatic centering bearing component provided by the present invention;

[0046] Figure 5 A three-dimensional diagram of the inner bearing gland of a non-shaft extension end convenient core-pulling automatic centering bearing component provided by the present invention;

[0047] Figure 6 A three-dimensional diagram of a convenient core-pulling component of a non-shaft extension end convenient core-pulling automatic centering bearing component provided by the present invention;

[0048] Figure 7 A three-dimensional diagram of a bearing sleeve of a non-shaft extension end convenient core-pulling automatic centering bearing component provided by the present invention;

[0049] Figure 8 It is a two-dimensional assembly drawing of the convenient core-pulling automatic centering bearing component at the shaft extension end;

[0050] Fig. 9 It is a structural schematic diagram of an automatic centering integral support for bearing components supported at both ends;

[0051] In the figure, 1-outer bearing pressure cover; 2-bearing chamber; 3-grease nipple; 4-first bolt; 5-inner upper bearing pressure cover; 6-bearing sleeve adjustment ring; 7-felt ring; 8-inner lower bearing pressure cover; 9-bearing sleeve; 10-rolling bearing; 11-bearing spacer ring; 12-second bolt; 13-flat gasket; 14-bearing sleeve pressure ring; 15-round nut; 16-round nut locking gasket; 17-third bolt; 18-taper pin; 19-moving end bearing chamber; 20 - bearing cover on the inner upper part of the swimming end; 21- bearing cover on the inner lower part of the swimming end; 22- bearing cover on the outer upper part of the swimming end; 23- bearing cover on the outer lower part of the swimming end; 24- bearing sleeve of the swimming end; 25- bearing spacer ring of the swimming end; 26- bearing sleeve pressure ring of the swimming end; 27- automatic centering support of the bearing component at the non-extension end; 28- automatic centering support of the bearing component at the extension end; 29- lower panel; 30- upper panel; 31- vertical rib plate; 32- lifting ear. DETAILED DESCRIPTION

[0052] In order to further understand the present invention, the embodiments of the present invention are described below in conjunction with examples, but it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention, rather than limiting the present invention.

[0053] The embodiment of the present invention discloses a non-shaft extension end convenient core-pulling type automatic centering bearing component, such as Figures 1-2As shown, it includes: an outer bearing cover 1, a bearing chamber 2, an inner bearing cover,

[0054] like Figure 3 As shown, the entirety of the bearing chamber 2 is a cylinder, and the lower part of the cylinder is a semicircular flange;

[0055] A threaded through hole is processed on the top of the bearing chamber 2 for installing the grease nipple 3; a full-circular boss is processed at the center through hole of the bearing chamber 2 for the inner axial limit of the rolling bearing 10; threaded holes are evenly processed on the circular planes at both ends of the bearing chamber 2 for installing the first bolt 4; through holes are evenly processed on the semicircular flange plane at the bottom of the bearing chamber 2 for installing the second bolt 12; threaded holes are evenly processed on the semicircular flange plane at the bottom of the bearing chamber 2 for installing the top screw; conical holes are evenly processed on the semicircular flange plane at the bottom of the bearing chamber 2 for installing the conical pin 18.

[0056] like Figure 4 As shown, the outer bearing gland 1 is a full-circular structure, connected to the outer side of the bearing chamber 2 by a first bolt 4;

[0057] Through holes are evenly processed on the circular flange plane of the outer bearing cover 1 for installing the first bolt 4; threaded holes are evenly processed on the circular flange plane of the outer bearing cover 1 for installing the top screw; a full-circular boss is processed on the inner side of the outer bearing cover 1 for outer axial limiting of the rolling bearing 10.

[0058] The inner bearing gland is connected to the inner side of the bearing chamber 2 by bolts;

[0059] like Figure 5 As shown, the inner bearing gland is of a center-split type, consisting of an inner upper half bearing gland 5 and an inner lower half bearing gland 8 connected together;

[0060] Through holes are evenly processed on the circular flange planes of the inner upper half bearing cover 5 and the inner lower half bearing cover 8 for installing bolts; a semicircular boss is processed on the inner side of the inner lower half bearing cover 8 for positioning with the arc of the bearing chamber 2.

[0061] A felt ring 7 is provided at the inner side of the inner bearing gland in contact with the shaft.

[0062] like Figure 6 As shown, two rolling bearings 10 are interference-mounted on the bearing sleeve 9, and the two rolling bearings 10 are separated by a bearing spacer ring 11.

[0063] like Figure 7 As shown, the bearing sleeve 9 is arranged in the bearing chamber 2, and the bearing sleeve 9 is a bilaterally symmetrical L-shaped sleeve; a keyway is machined in the inner hole of the bearing sleeve 9 for transmitting torque through the key and the shaft.

[0064] A grease nipple 3 is provided at the top of the bearing chamber 2, and the lower end of the grease nipple 3 is aligned with the bearing spacer ring 11;

[0065] The bearing sleeve pressing ring 14 fixes the bearing sleeve 9 on the shaft.

[0066] The round nut 15 locks the bearing sleeve pressing ring 14, and a round nut locking gasket 16 is arranged between the round nut 15 and the bearing sleeve 9 pressing ring.

[0067] The bearing sleeve adjusting ring 6 is a full-circle structure, and is used to adjust the axial position of the fan rotor by adjusting the thickness of the bearing sleeve adjusting ring 6 .

[0068] The bearing sleeve adjusting ring 6 is arranged in the bearing sleeve 9, close to the side of the inner bearing gland.

[0069] The assembly form of the non-axial extension end convenient core-pulling type automatic centering bearing component of the present invention is as follows:

[0070] 1. Assembly of automatic centering part

[0071] [1] Install the bearing chamber 2 on the equipment bearing seat bracket, and make the overall cylindrical structure of the bearing chamber 2 fit closely with the semicircular arc on the equipment bearing seat bracket to achieve the automatic centering function.

[0072] [2] Fit the lower semicircular flange end face of the bearing chamber 2 with the semicircular flange end face on the equipment bearing seat bracket.

[0073] [3] Install the flat gasket 13 on the second bolt 12, and pass the second bolt 12 with the flat gasket 13 through the through hole on the lower semicircular flange of the bearing chamber 2 to connect it to the threaded hole on the end face of the semicircular flange on the equipment bearing seat bracket.

[0074] [4] Pass the conical pin 18 through the conical hole on the lower semicircular flange of the bearing chamber 2 and connect it to the conical hole on the end face of the semicircular flange on the equipment bearing seat bracket.

[0075] [5] Connect the grease fitting 3 to the bearing chamber 2 through threads.

[0076] 2. Convenient assembly of the core pulling part

[0077] [1] Heat the inner rolling bearing 10 and install it on the bearing sleeve 9, so that the inner ring end face of the inner rolling bearing 10 is in contact with the boss end face of the bearing sleeve 9.

[0078] [2] Install the bearing spacer ring 11 on the bearing sleeve 9 and make the end face of the bearing spacer ring 11 fit with the end face of the inner ring of the inner rolling bearing 10.

[0079] [3] Heat the outer rolling bearing 10 and install it on the bearing sleeve 9, and make the inner ring end face of the outer rolling bearing 10 fit with the end face of the bearing spacer ring 11.

[0080] [4] Add appropriate grease to the two rolling bearings 10.

[0081] [5] Install the bearing sleeve adjusting ring 6 onto the shaft and make the end face of the bearing sleeve adjusting ring 6 fit with the end face of the shaft neck.

[0082] [6] Install the key into the keyway on the shaft.

[0083] [7] Install the bearing sleeve 9 assembled with the rolling bearing 10 and other components onto the shaft, so that the key matches the keyway in the inner hole of the bearing sleeve 9 and the end face of the bearing sleeve 9 fits with the end face of the bearing sleeve adjustment ring 6.

[0084] [8] Install the bearing sleeve pressure ring 14 onto the shaft so that the end face of the bearing sleeve pressure ring 14 fits with the end face of the inner ring of the outer rolling bearing 10.

[0085] [9] Install the round nut 15 and the round nut locking washer 16 onto the shaft and tighten them to prevent them from loosening.

[0086]

[10] Install the felt ring 7 into the inner lower half of the bearing cover 8.

[0087]

[11] Install the inner lower half bearing cover 8 on the bearing chamber 2 so that the semicircular boss of the inner lower half bearing cover 8 fits with the inner hole of the bearing chamber 2, and use bolts 4 to connect the inner lower half bearing cover 8 to the bearing chamber 2.

[0088]

[12] Install the felt ring 7 into the inner upper half of the bearing gland 5.

[0089]

[13] Install the inner upper bearing cover 5 on the bearing chamber 2, use the third bolt 17 to connect the inner upper bearing cover 5 and the inner lower bearing cover 8 as a whole, and use the bolt 4 to connect the inner upper bearing cover 5 to the bearing chamber 2.

[0090]

[14] Install the outer bearing cover 1 into the bearing chamber 2, adjust the thermal expansion gap to within the acceptable range through the outer bearing cover 1, and use the first bolt 4 to connect the outer bearing cover 1 to the bearing chamber 2.

[0091] The embodiment of the present invention further discloses a fan rotor, comprising a shaft, a fixed end, a movable end and an automatic centering integral support of a bearing component supported at both ends;

[0092] The fixed end of the fan rotor is the non-axial extension end convenient core-pulling automatic centering bearing component described in the above technical solution.

[0093] The floating end of the fan rotor is a convenient core-pulling automatic centering bearing component at the shaft extension end.

[0094] The two ends of the shaft are respectively inserted into the convenient core-pulling automatic centering bearing component at the shaft extension end and the convenient core-pulling automatic centering bearing component at the non-shaft extension end;

[0095] The convenient core-pulling automatic centering bearing component at the shaft extension end and the convenient core-pulling automatic centering bearing component at the non-shaft extension end are fixed on the automatic centering integral support of the supporting bearing components at both ends.

[0096] like Figure 8 As shown, the shaft extension end convenient core-pulling automatic centering bearing component includes:

[0097] The inner bearing cover of the swimming end, the bearing chamber 19 of the swimming end, the outer bearing cover of the swimming end,

[0098] The entirety of the movable end bearing chamber 19 is a cylinder, and the lower part of the cylinder is a semicircular flange;

[0099] The inner bearing gland of the swimming end and the outer bearing gland of the swimming end are respectively connected to the inner side and the outer side of the swimming end bearing chamber 19;

[0100] The inner bearing gland of the swimming end is of a split type, consisting of an upper inner bearing gland 20 of the swimming end and a lower inner bearing gland 21 of the swimming end, which are connected by bolts.

[0101] A felt ring is provided at the connection between the inner side of the bearing gland on the inner side of the floating end and the shaft;

[0102] The outer bearing gland of the swimming end is of a split type, consisting of an upper bearing gland 22 of the swimming end and a lower bearing gland 23 of the swimming end; the two are connected by bolts;

[0103] A felt ring is provided at the connection between the inner side of the outer bearing gland of the floating end and the shaft;

[0104] The two rolling bearings are interference-fitted on the movable end bearing sleeve 24, and the two rolling bearings are separated by the movable end bearing spacer ring 25.

[0105] The movable end bearing sleeve 24 is arranged in the movable end bearing chamber 19, and the movable end bearing sleeve 24 is a bilaterally symmetrical L-shaped sleeve; a keyway is machined in the inner hole of the movable end bearing sleeve 24 for transmitting torque through the key and the shaft.

[0106] A grease nipple is provided at the top of the movable end bearing chamber 19, and the lower end of the grease nipple is aligned with the movable end bearing spacer ring 25;

[0107] The movable end bearing sleeve pressing ring 26 fixes the movable end bearing sleeve 24 on the shaft.

[0108] The two-end support type bearing component automatic centering integral support, such as Fig. 9 As shown, including:

[0109] The non-shaft extension end bearing component automatic centering support 27 and the shaft extension end bearing component automatic centering support 28 are relatively welded to the front and rear ends of the upper panel 30.

[0110] The upper portion 27 of the automatic centering support of the non-shaft extension end bearing component is a semi-circular arc structure, on which the non-shaft extension end convenient core-pulling automatic centering bearing component is fixed, which is used for accurate automatic centering of the arc;

[0111] The semicircular flange end face of the automatic centering support 27 of the non-shaft extension end bearing component is uniformly processed with threaded holes and tapered holes; the vertical face of the automatic centering support 27 of the non-shaft extension end bearing component is processed with flow grooves and welded with reinforcing ribs.

[0112] The upper part of the automatic centering support 28 of the shaft extension end bearing component is a semi-arc structure, on which the convenient core-pulling automatic centering bearing component of the shaft extension end is fixed, which is used for accurate automatic centering of the arc; the semi-circular flange end face of the automatic centering support 28 of the shaft extension end bearing component is evenly processed with threaded holes and tapered holes; the vertical surface of the automatic centering support 28 of the shaft extension end bearing component is processed with flow grooves and welded with reinforcing ribs.

[0113] The concentricity difference of the upper semicircular arc structure of the non-shaft extension end bearing component automatic centering support 27 and the shaft extension end bearing component automatic centering support 28 is less than 0.02mm.

[0114] The bottom of the upper panel 30 is connected to the lower panel 29;

[0115] Vertical ribs 8 are provided on the outside of the left and right sides of the upper panel 7, and the vertical ribs 8 are also fixed on the lower panel 29;

[0116] The entire upper panel 30 is welded to the lower panel 29 through the vertical ribs 31 and other reinforcing ribs.

[0117] A plurality of third finishing pads are evenly arranged at the bottom of the lower panel 29. The flatness error of the six third finishing pads is less than 0.02 mm. First finishing pads are arranged on both sides of the non-axle extension end bearing component automatic centering support 27 and the shaft extension end bearing component automatic centering support 28; position adjustment screws are arranged on the adjacent two sides of the first finishing pads;

[0118] Preferably, the eight position adjustment screw devices are all welded to the overall upper panel 30, so as to achieve the front, back, left and right position adjustment.

[0119] Second finishing pads are respectively provided at the middle of the left and right sides of the upper panel 30;

[0120] The flatness error of the four first finishing pads and the two second finishing pads is less than 0.02 mm.

[0121] The upper panel 30 is evenly provided with lifting ears 32 around it. Preferably, all four lifting ears 32 are welded to the entire upper panel 30, so as to facilitate the lifting work of the entire support.

[0122] The components at both ends of the fan rotor and the integral automatic centering integral support of the end-supported bearing components ensure concentricity, ensure that the rolling bearing installed in the bearing seat is evenly stressed, avoid wear of the rolling bearing, and improve the reliability of the equipment.

[0123] The above embodiments are only used to help understand the method and core idea of ​​the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

[0124] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A non-shaft extension end convenient core-pulling type automatic centering bearing component, characterized in that: include: Outer bearing gland, bearing chamber, inner bearing gland, The bearing chamber is a cylindrical body with a semicircular flange at the bottom. The outer bearing gland is a full-circle structure and is connected to the outer side of the bearing chamber; The inner bearing gland is connected to the inner side of the bearing chamber; The inner bearing gland is of center split type, consisting of the inner upper half bearing gland and the inner lower half bearing gland connected together; Two rolling bearings are installed on the bearing sleeve with interference fit, and the two rolling bearings are separated by a bearing spacer ring. The bearing sleeve is arranged in the bearing chamber. A grease nipple is provided on the top of the bearing chamber, and the lower end of the grease nipple is aligned with the bearing spacer ring; The bearing sleeve retaining ring secures the bearing sleeve to the shaft.

2. The non-axial extension end convenient core-pulling type automatic centering bearing component according to claim 1 is characterized in that: A full-circle boss is machined on the inner side of the outer bearing gland for axially limiting the outer side of the rolling bearing.

3. The non-axial extension end convenient core-pulling type automatic centering bearing component according to claim 1 is characterized in that: A semicircular boss is machined on the inner side of the inner lower half bearing cover for positioning in coordination with the arc of the bearing chamber.

4. The non-axial extension end convenient core-pulling type automatic centering bearing component according to claim 1, characterized in that: A felt ring is arranged at a position where the inner side of the inner bearing gland contacts the shaft.

5. The non-axial extension end convenient core-pulling type automatic centering bearing component according to claim 1, characterized in that: The bearing sleeve is a bilaterally symmetrical L-shaped sleeve; a keyway is machined in the inner hole of the bearing sleeve for transmitting torque through the key and the shaft.

6. The non-axial extension end convenient core-pulling type automatic centering bearing component according to claim 1, characterized in that: The round nut locks the bearing sleeve compression ring, and a round nut locking gasket is arranged between the round nut and the bearing sleeve compression ring.

7. The non-axial extension end convenient core-pulling type automatic centering bearing component according to claim 1, characterized in that: The inner upper half bearing cover and the inner lower half bearing cover are connected by bolts.

8. The non-axial extension end convenient core-pulling type automatic centering bearing component according to claim 1, characterized in that: It also includes a bearing sleeve adjusting ring, which is arranged in the bearing sleeve, close to one side of the inner bearing pressure cover.

9. A fan rotor, characterized in that: include: The fixed end is a non-axial extension end convenient core-pulling automatic centering bearing component as described in any one of claims 1 to 8; The shaft and the shaft extension end have convenient core-pulling automatic centering bearing components and the two end support bearing components have automatic centering integral supports; The two ends of the shaft are respectively inserted into the convenient core-pulling automatic centering bearing component at the shaft extension end and the convenient core-pulling automatic centering bearing component at the non-shaft extension end; The convenient core-pulling automatic centering bearing component at the shaft extension end and the convenient core-pulling automatic centering bearing component at the non-shaft extension end are fixed on the automatic centering integral support of the supporting bearing components at both ends.

10. The fan rotor according to claim 9, characterized in that: The floating end of the fan rotor is a convenient core-pulling automatic centering bearing component at the shaft extension end; The convenient core-pulling automatic centering bearing component at the shaft extension end comprises: The inner bearing cover of the swimming end, the bearing chamber of the swimming end, the outer bearing cover of the swimming end, The whole of the movable end bearing chamber is a cylinder, and the lower part of the cylinder is a semicircular flange; The inner bearing gland of the swimming end and the outer bearing gland of the swimming end are respectively connected to the inner side and the outer side of the bearing chamber of the swimming end; The inner bearing gland of the swimming end is of center split type, which is composed of the upper inner bearing gland of the swimming end and the lower inner bearing gland of the swimming end. The outer bearing gland of the swimming end is of the middle split type, consisting of the upper outer bearing gland of the swimming end and the lower outer bearing gland of the swimming end; The two rolling bearings are installed on the floating end bearing sleeve with interference fit, and the two rolling bearings are separated by the floating end bearing spacer ring. The movable end bearing sleeve is arranged in the movable end bearing chamber. A grease nipple is provided on the top of the movable end bearing chamber, and the lower end of the grease nipple is aligned with the movable end bearing spacer ring; The movable end bearing sleeve press ring fixes the movable end bearing sleeve on the shaft.

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