Two-end supporting type bearing part self-centering integral support and fan rotor

Abstract

The invention relates to the field of high-speed heavy-load double-suction centrifugal fans, in particular to a two-end supporting type bearing part self-centering integral support and a fan rotor. The self-centering integral support comprises a non-shaft extension end bearing part self-centering support and a shaft extension end bearing part self-centering support which are oppositely welded at the front end and the rear end of an upper panel; the bottom of the upper panel is connected with the lower panel; vertical rib plates are arranged outside the left side and the right side of the upper panel and are also fixed on the lower panel; first finish machining cushion blocks are arranged on the two sides of the non-shaft extension end bearing part automatic centering support and the two sides of the shaft extension end bearing part automatic centering support; position adjusting jackscrews are arranged on the two adjacent sides of the first finish machining cushion block. Second finish machining cushion blocks are arranged in the middles of the left side and the right side of the upper panel respectively; and lifting lugs are uniformly arranged around the upper panel. Integral supporting is adopted, the concentricity of the fixed end and the moving end of the fan rotor is guaranteed, and abnormal stress of the rolling bearing is avoided.

Description

Technical Field

[0001] The invention relates to the field of high-speed and heavy-load double-suction centrifugal fans, and in particular to an automatic centering integral support for a bearing component supported at both ends 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. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide an automatic centering integral support for a bearing component with two ends supported and a fan rotor, which adopts an integral support to ensure the concentricity of the fixed end and the floating end of the fan rotor and avoid abnormal stress on the rolling bearing.

[0007] The present invention provides an automatic centering integral support for a bearing component supported at both ends, comprising:

[0008] The automatic centering support for the bearing component at the non-shaft extension end and the automatic centering support for the bearing component at the shaft extension end are relatively welded at the front and rear ends of the upper panel.

[0009] The upper part of the automatic centering support of the bearing component at the non-shaft extension end is a semi-circular arc structure, and the upper part of the automatic centering support of the bearing component at the shaft extension end is a semi-circular arc structure;

[0010] The bottom of the upper panel is connected to the lower panel;

[0011] Vertical ribs are provided on the outside of the left and right sides of the upper panel, and the vertical ribs are also fixed to the lower panel;

[0012] First finishing pads are arranged on both sides of the automatic centering support of the non-shaft extension end bearing component and the automatic centering support of the shaft extension end bearing component; and position adjustment screws are arranged on the adjacent two sides of the first finishing pads;

[0013] A second finishing pad is provided in the middle of the left side and the right side of the upper panel respectively;

[0014] Lifting ears are evenly arranged around the upper panel.

[0015] In a specific embodiment of the present invention, the vertical surface of the automatic centering support 1 of the non-axial extension end bearing component is processed with flow grooves and welded with reinforcing ribs.

[0016] In a specific embodiment of the present invention, the concentricity difference between the upper semicircular arc structure of the automatic centering support 1 of the non-shaft extension end bearing component and the automatic centering support of the shaft extension end bearing component is less than 0.02 mm.

[0017] In a specific embodiment of the present invention, the entire upper panel is welded to the lower panel through vertical ribs and other reinforcing ribs.

[0018] In a specific embodiment of the present invention, a third finishing pad is provided at the bottom of the lower panel.

[0019] In a specific embodiment of the present invention, the flatness error of the four first finishing pads and the two second finishing pads is less than 0.02 mm.

[0020] In a specific embodiment of the present invention, the flatness error of the six third finishing pads is less than 0.02 mm.

[0021] The present invention provides a fan rotor, comprising: the automatic centering integral support of the bearing component with two ends supported as described in the above technical solution, a shaft, a convenient core-pulling automatic centering bearing component at the shaft extension end, and a convenient core-pulling automatic centering bearing component at the non-shaft extension end;

[0022] 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;

[0023] 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.

[0024] In a specific embodiment of the present invention, the shaft extension end convenient core-pulling type automatic centering bearing component comprises:

[0025] The inner bearing cover of the swimming end, the bearing chamber of the swimming end, the outer bearing cover of the swimming end,

[0026] The whole of the movable end bearing chamber is a cylinder, and the lower part of the cylinder is a semicircular flange;

[0027] 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;

[0028] 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.

[0029] 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;

[0030] 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.

[0031] The movable end bearing sleeve is arranged in the movable end bearing chamber.

[0032] 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;

[0033] The movable end bearing sleeve press ring fixes the movable end bearing sleeve on the shaft.

[0034] In a specific embodiment of the present invention, the non-shaft extension end convenient core-pulling type automatic centering bearing component comprises:

[0035] The outer bearing cover of the fixed end, the bearing chamber of the fixed end, the inner bearing cover of the fixed end,

[0036] The bearing chamber at the fixed end is a cylinder, and the lower part of the cylinder is a semicircular flange;

[0037] The outer bearing gland of the fixed end is a full-circle structure and is connected to the side of the bearing chamber of the fixed end;

[0038] The bearing gland on the inner side of the fixed end is connected to the inner side of the bearing chamber on the fixed end;

[0039] The inner bearing gland of the fixed end is of center split type, consisting of the upper inner bearing gland of the fixed end and the lower inner bearing gland of the fixed end, which are connected by bolts.

[0040] Through holes are evenly processed on the circular flange planes of the upper inner half bearing cover and the lower inner half bearing cover of the fixed end for installing bolts; a semicircular boss is processed on the inner side of the lower inner half bearing cover of the fixed end for positioning with the arc of the fixed end bearing chamber.

[0041] Compared with the prior art, the automatic centering integral support for the bearing components supported at both ends and the fan rotor of the present invention adopt an integral support, which ensures the concentricity of the automatic centering supports at both ends, avoids abnormal force on the rolling bearing, reduces the wear of the fan rotor, and improves the reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A schematic diagram showing the structure of an automatic centering integral support for bearing components supported at both ends;

[0043] Figure 2 A schematic diagram showing the structure of a convenient core-pulling automatic centering bearing component at the shaft extension end;

[0044] Figure 3 A three-dimensional view showing the components of the convenient core-pulling self-centering bearing at the shaft extension end;

[0045] Figure 4 A schematic diagram showing the structure of a convenient core-pulling automatic centering bearing component at the non-shaft extension end;

[0046] Figure 5 A three-dimensional view showing the non-shaft extension end convenient core-pulling self-centering bearing component;

[0047] In the figure, 1-automatic centering support for the bearing component at the non-shaft extension end; 2-automatic centering support for the bearing component at the shaft extension end; 3-first fine-machined pad; 4-second fine-machined pad; 5-third fine-machined pad; 6-lower panel; 7-upper panel; 8-vertical rib plate; 9-lifting ear; 10-position adjustment screw device; 11-inner bearing cover of the swimming end; 12-swimming end bearing chamber; 13-outer bearing cover of the swimming end; 14-first rolling bearing; 15-swimming end bearing sleeve; 16-swimming end bearing spacer; 17-swimming end bearing sleeve pressure ring; 18-shaft; 19-outer bearing cover of the fixed end; 20-fixed end bearing chamber; 21-inner bearing cover of the fixed end; 22-second rolling bearing; 23-fixed end bearing spacer; 24-fixed end bearing sleeve; 25-fixed end bearing sleeve pressure ring. DETAILED DESCRIPTION

[0048] 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.

[0049] The embodiment of the present invention discloses an automatic centering integral support for a bearing component with two ends supported, such as Figure 1 As shown, including:

[0050] The non-shaft extension end bearing component automatic centering support 1 and the shaft extension end bearing component automatic centering support 2 are relatively welded at the front end and the rear end of the upper panel 7.

[0051] The upper part 1 of the automatic centering support of the bearing component at the non-shaft extension end is a semi-circular arc structure, which is used for accurate automatic centering of the arc;

[0052] The semicircular flange end face of the automatic centering support 1 of the bearing component at the non-shaft extension end is uniformly processed with threaded holes and tapered holes; the vertical face of the automatic centering support 1 of the bearing component at the non-shaft extension end is processed with flow grooves and welded with reinforcing ribs.

[0053] The upper part of the automatic centering support 2 of the shaft extension end bearing component is a semicircular arc structure for accurate automatic centering of the arc; threaded holes and tapered holes are evenly processed on the semicircular flange end face of the automatic centering support 2 of the shaft extension end bearing component; flow grooves are processed on the vertical surface of the automatic centering support 2 of the shaft extension end bearing component and reinforced ribs are welded.

[0054] The concentricity difference of the upper semicircular arc structure of the automatic centering support 1 of the non-shaft extension end bearing component and the automatic centering support 2 of the shaft extension end bearing component is less than 0.02mm.

[0055] The bottom of the upper panel 7 is connected to the lower panel 6;

[0056] 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 6;

[0057] The entire upper panel 7 is welded to the lower panel 6 through the vertical ribs 8 and other reinforcing ribs.

[0058] A plurality of third finishing pads 5 are evenly arranged at the bottom of the lower panel 6. The flatness error of the six third finishing pads is less than 0.02 mm. First finishing pads 3 are arranged on both sides of the non-axle extension end bearing component automatic centering support 1 and the shaft extension end bearing component automatic centering support 2; position adjustment screws 10 are arranged on the adjacent two sides of the first finishing pad 3;

[0059] Preferably, the eight position-adjusting top screw devices 10 are all welded to the overall upper panel 7, so as to achieve the front, back, left, and right position adjustment.

[0060] The middle of the left and right sides of the upper panel 7 are respectively provided with a second finishing pad 4;

[0061] The flatness error of the four first finishing pads and the two second finishing pads is less than 0.02 mm.

[0062] Lifting ears 9 are evenly arranged around the upper panel 7. Preferably, all four lifting ears 9 are welded to the overall upper panel 7, so as to facilitate the lifting work of the entire support.

[0063] The assembly form of the automatic centering integral support of the bearing component supported at both ends of the present invention is as follows:

[0064] [1] The vertical ribs 8 and other multiple reinforcing ribs are welded to the overall lower panel 6.

[0065] [2] Weld the six third finely machined pads 5 to the overall lower panel 6.

[0066] [3] Weld the entire upper panel 7 to the vertical ribs 8 and other multiple reinforcing ribs.

[0067] [4] Weld the non-axle extension end bearing component automatic centering support 1 to the integral upper panel 7.

[0068] [5] Weld the shaft extension end bearing component automatic centering support 2 to the integral upper panel 7.

[0069] [6] Weld the four first finishing pads 3 to the overall upper panel 7.

[0070] [7] Weld the two second finishing pads 4 to the overall upper panel 7.

[0071] [8] Weld the four lifting ears 9 to the overall upper panel 7.

[0072] [9] Weld the 8 position adjustment screw devices to the overall upper panel 7.

[0073]

[10] Ensure that the flatness of the six third fine-machined pads 5 welded to the integral lower panel 6 meets standard requirements through mechanical processing.

[0074]

[11] Ensure through machining that the flatness of the four first finishing pads 3 and the two second finishing pads 4 welded to the overall upper panel 7 meets the standard requirements; and the parallelism of the four first finishing pads 3, the two second finishing pads 4 and the six third finishing pads 5 also needs to be controlled to meet the standard requirements.

[0075]

[12] Ensure through machining that the verticality of the semicircular flange end face of the automatic centering support 1 of the non-shaft extension end bearing component and the six third fine-machined pads 5 meets the standard requirements.

[0076]

[13] Ensure through machining that the verticality of the semicircular flange end face of the automatic centering support 2 of the shaft extension end bearing component and the six third fine-machined pads 5 meets the standard requirements.

[0077]

[14] Ensure that the concentricity of the upper semicircular arc structure of the automatic centering support 1 of the non-shaft extension end bearing component and the automatic centering support 2 of the shaft extension end bearing component meets the standard requirements through mechanical processing.

[0078] The embodiment of the present invention discloses a fan rotor, comprising: the automatic centering integral support of the bearing component with two ends supported as described in the above technical solution, a shaft, a convenient core-pulling automatic centering bearing component at the shaft extension end, and a convenient core-pulling automatic centering bearing component at the non-shaft extension end;

[0079] 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;

[0080] 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.

[0081] The convenient core-pulling automatic centering bearing component at the shaft extension end comprises:

[0082] The inner bearing cover 11 of the swimming end, the bearing chamber 12 of the swimming end, the outer bearing cover 13 of the swimming end,

[0083] The entirety of the movable end bearing chamber 12 is a cylinder, and the lower part of the cylinder is a semicircular flange;

[0084] The inner bearing gland 11 of the movable end and the outer bearing gland 13 of the movable end are respectively connected to the inner side and the outer side of the movable end bearing chamber 12;

[0085] The inner bearing gland 11 of the swimming end is of a split type, consisting of an upper inner bearing gland and a lower inner bearing gland.

[0086] The outer bearing gland 13 of the swimming end is of a center split type, consisting of an upper half bearing gland of the swimming end and a lower half bearing gland of the swimming end;

[0087] The two first rolling bearings 14 are interference-mounted on the movable end bearing sleeve 15, and the two first rolling bearings 14 are separated by a movable end bearing spacer ring 16.

[0088] The movable end bearing sleeve 15 is arranged in the movable end bearing chamber 12. The movable end bearing sleeve 15 is a bilaterally symmetrical L-shaped sleeve. A keyway is machined in the inner hole of the movable end bearing sleeve 15 for transmitting torque through the key and the shaft 18.

[0089] A grease nipple is provided at the top of the movable end bearing chamber 12, and the lower end of the grease nipple is aligned with the movable end bearing spacer ring 16;

[0090] The movable end bearing sleeve pressure ring 17 fixes the movable end bearing sleeve 15 on the shaft 18.

[0091] A felt ring is provided at the position where the inner side of the movable end inner bearing cover 11 contacts the shaft 18 .

[0092] A felt ring is provided at the contact position between the inner side of the outer bearing cover 13 of the movable end and the shaft 18 .

[0093] The movable end bearing chamber 12 is fixed on the automatic centering support 2 of the shaft extension end bearing component and is connected by various bolts, jackscrews and conical pins.

[0094] The non-shaft extension end convenient core-pulling type automatic centering bearing component comprises:

[0095] The outer bearing cover 19 of the fixed end, the bearing chamber 20 of the fixed end, the inner bearing cover 21 of the fixed end,

[0096] The fixed end bearing chamber 20 is a cylinder, and the lower part of the cylinder is a semicircular flange;

[0097] The outer bearing gland 19 of the fixed end is a full-circle structure and is connected to the side of the fixed end bearing chamber 20;

[0098] The fixed end inner side bearing gland 21 is connected to the inner side of the fixed end bearing chamber 20;

[0099] The inner bearing gland 21 of the fixed end is of a split type, consisting of an upper inner bearing gland and a lower inner bearing gland, which are connected by bolts.

[0100] Through holes are evenly processed on the circular flange planes of the upper inner half bearing cover and the lower inner half bearing cover of the fixed end for installing bolts; a semicircular boss is processed on the inner side of the lower inner half bearing cover of the fixed end for positioning with the arc of the fixed end bearing chamber 20.

[0101] A felt ring is provided at the inner side of the fixed end inner bearing cover 21 at the contact position with the shaft 18 .

[0102] The two second rolling bearings 22 are interference-mounted on the fixed-end bearing sleeve 20, and the two second rolling bearings 22 are separated by a fixed-end bearing spacer ring 23.

[0103] The fixed end bearing sleeve 24 is arranged in the fixed end bearing chamber 20, and the fixed end bearing sleeve 24 is a bilaterally symmetrical L-shaped sleeve; a keyway is machined in the inner hole of the fixed end bearing sleeve 24 for transmitting torque through the key and the shaft 18.

[0104] A grease nipple is provided at the top of the fixed end bearing chamber 20, and the lower end of the grease nipple is aligned with the fixed end bearing spacer ring 23;

[0105] The fixed end bearing sleeve pressing ring 25 fixes the fixed end bearing sleeve 24 on the shaft 18, and is connected by various bolts, jackscrews and conical pins.

[0106] A felt ring is provided at the inner side of the fixed end inner bearing cover 21 at the contact position with the shaft 18 .

[0107] The fixed end bearing chamber 20 is fixed on the automatic centering support 1 of the non-shaft extension end bearing component.

[0108] 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.

[0109] 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.

[0110] 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. An automatic centering integral support for a bearing component supported at both ends, characterized in that: include: The automatic centering support for the bearing component at the non-shaft extension end and the automatic centering support for the bearing component at the shaft extension end are relatively welded at the front and rear ends of the upper panel. The upper part of the automatic centering support of the bearing component at the non-shaft extension end is a semi-circular arc structure, and the upper part of the automatic centering support of the bearing component at the shaft extension end is a semi-circular arc structure; The bottom of the upper panel is connected to the lower panel; Vertical ribs are provided on the outside of the left and right sides of the upper panel, and the vertical ribs are also fixed to the lower panel; First finishing pads are arranged on both sides of the automatic centering support of the non-shaft extension end bearing component and the automatic centering support of the shaft extension end bearing component; and position adjustment screws are arranged on the adjacent two sides of the first finishing pads; A second finishing pad is provided in the middle of the left side and the right side of the upper panel respectively; Lifting ears are evenly arranged around the upper panel.

2. The automatic centering integral support for bearing components supported at both ends according to claim 1, characterized in that: The vertical surface of the automatic centering support 1 of the non-axial extension end bearing component is processed with a flow groove and welded with reinforcing ribs.

3. The automatic centering integral support for bearing components supported at both ends according to claim 1, characterized in that: The concentricity difference between the upper semicircular arc structure of the automatic centering support 1 of the non-shaft extension end bearing component and the automatic centering support of the shaft extension end bearing component is less than 0.02mm.

4. The automatic centering integral support for bearing components supported at both ends according to claim 1, characterized in that: The entire upper panel is welded to the lower panel through vertical ribs and other reinforcing ribs.

5. The automatic centering integral support for bearing components supported at both ends according to claim 1, characterized in that: A third finishing pad is arranged at the bottom of the lower panel.

6. The automatic centering integral support for bearing components supported at both ends according to claim 1, characterized in that: The flatness error of the four first finishing pads and the two second finishing pads is less than 0.02 mm.

7. The automatic centering integral support for bearing components supported at both ends according to claim 1, characterized in that: The flatness error of the 6 third finishing pads is less than 0.02mm.

8. A fan rotor, characterized in that: include: The automatic centering integral support for the bearing components supported at both ends, the shaft, the convenient core-pulling automatic centering bearing components at the shaft extension end, and the convenient core-pulling automatic centering bearing components at the non-shaft extension end as described in any one of claims 1 to 7; 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.

9. The fan rotor according to claim 8, characterized in that: 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.

10. The fan rotor according to claim 8, characterized in that: The non-shaft extension end convenient core-pulling type automatic centering bearing component comprises: The outer bearing cover of the fixed end, the bearing chamber of the fixed end, the inner bearing cover of the fixed end, The bearing chamber at the fixed end is a cylinder, and the lower part of the cylinder is a semicircular flange; The outer bearing gland of the fixed end is a full-circle structure and is connected to the side of the bearing chamber of the fixed end; The bearing gland on the inner side of the fixed end is connected to the inner side of the bearing chamber on the fixed end; The inner bearing gland of the fixed end is of center split type, consisting of the upper inner bearing gland of the fixed end and the lower inner bearing gland of the fixed end, which are connected by bolts. Through holes are evenly processed on the circular flange planes of the upper inner half bearing cover and the lower inner half bearing cover of the fixed end for installing bolts; a semicircular boss is processed on the inner side of the lower inner half bearing cover of the fixed end for positioning with the arc of the fixed end bearing chamber.

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