Thrust self-aligning roller bearing clearance adjustment tool and adjustment method for high consistency pulper

Abstract

The present application relates to the technical field of assembly tooling, in particular to a thrust aligning roller bearing clearance adjustment tool and adjustment method for a high consistency refiner, comprising: a tool shaft, a tool stop disc coaxially arranged at one end of the tool shaft; a front bearing and a rear bearing are sleeved on the tool shaft, a tool bearing chamber and a tool bearing chamber sleeve are arranged between the front bearing and the rear bearing, the front ends of the front bearing and the rear bearing are respectively in abutment with the tool stop disc and the tool bearing chamber, the front end of the rear bearing is in abutment with the tool bearing chamber sleeve, a pressing ring is arranged at the rear end of the rear bearing, and a push cylinder is arranged at the rear end of the pressing ring; a tool mandrel extending in the front-rear direction is arranged in the tool bearing chamber, a butterfly spring is sleeved on the tool mandrel, and the front and rear ends of the butterfly spring are respectively in abutment with the tool bearing chamber and the tool bearing chamber sleeve. The thrust aligning roller bearing clearance adjustment tool and adjustment method for the high consistency refiner are suitable for bearing assembly work of various models of high consistency refiners, and the problem of low machining precision is solved.

Description

Technical Field

[0001] This invention relates to the field of assembly tooling technology, specifically to a tooling and method for adjusting the clearance of a thrust self-aligning roller bearing for a high-consistency refiner. Background Technology

[0002] A high-consistency refiner is a single-disc refiner. Under normal operating conditions, the spindle speed can reach 1500-1800 rpm, and the axial force on the spindle during rotation is very large. Therefore, to ensure the normal operation of the spindle, the bearing design must meet two important conditions: high speed and large radial force. Currently, thrust self-aligning roller bearings are generally selected. During the assembly process of this type of bearing, the bearing clearance is particularly important. If the clearance is too small, the bearing resistance will be high, leading to overheating and damage, and even damage to the spindle. If the clearance is too large, it will cause equipment vibration and even damage.

[0003] Therefore, proper bearing clearance is a crucial step in the assembly process, with a standard clearance adjustment of 0.08-0.25mm. However, even with this conventional clearance adjustment method, situations where thrust self-aligning roller bearings are too tight or too loose still occur. The main reasons for this problem are:

[0004] 1. Different models of high-consistency pulpers use different types of bearings;

[0005] 2. The bearing housing is machined with low precision. Summary of the Invention

[0006] To address the technical problems existing in the background art, the present invention provides a tooling and method for adjusting the clearance of thrust self-aligning roller bearings for high-consistency refiners, applicable to the bearing assembly work of various models of high-consistency refiners; and overcomes the problem of low machining accuracy.

[0007] The technical solution adopted by this invention is:

[0008] A tooling for adjusting the clearance of a thrust self-aligning roller bearing for a high-consistency refiner includes: a tooling shaft, one end of which is coaxially fitted with a tooling retainer; a front bearing and a rear bearing are fitted onto the tooling shaft, and a tooling bearing housing and a tooling bearing housing sleeve are provided between the front bearing and the rear bearing; the front and rear ends of the front bearing abut against the tooling retainer and the tooling bearing housing respectively; the front end of the rear bearing abuts against the tooling bearing housing sleeve; a pressure ring is abutted against the rear end of the rear bearing; and a pusher is provided at the rear end of the pressure ring.

[0009] The tooling bearing chamber is provided with a tooling mandrel extending in the front-to-back direction. The tooling mandrel is fitted with a butterfly spring, and the front and rear ends of the butterfly spring abut against the tooling bearing chamber and the tooling bearing chamber sleeve, respectively.

[0010] Furthermore, the pusher is driven by a hydraulic device and moves in the front-to-back direction, and the pushing pressure of the pusher is determined according to the fluid supply pressure.

[0011] Furthermore, the relative end faces of the tooling bearing chamber and the tooling bearing chamber sleeve are provided with a gap.

[0012] Furthermore, an adjusting shim fitted around the tooling mandrel is provided in contact between the disc spring and the tooling bearing chamber.

[0013] The adjustment method for the thrust self-aligning roller bearing clearance adjustment fixture used in high-consistency refiners includes:

[0014] S1. Bearing Measurement:

[0015] Measure the axial distance of the front bearing and the axial distance of the rear bearing, and record the results.

[0016] S2. Tooling Installation:

[0017] The hydraulic equipment drives the pusher to sequentially mount the front bearing, the bearing housing, the bearing housing sleeve, the rear bearing, and the pressure ring onto the tooling shaft, pressing them together. At this time, the bearing housing and the bearing housing sleeve approach each other, causing the disc spring to contract and provide thrust. The tooling clearance between the opposite end faces of the bearing housing and the bearing housing sleeve is 0.27±0.01mm.

[0018] Record the adjusting shims that mate with the disc spring;

[0019] S3, Bearing assembly measurement:

[0020] Measure and record the axial distance between the outer end faces of the bearing assemblies of the front and rear bearings;

[0021] Dismantle the equipment.

[0022] Furthermore, S4, bearing assembly:

[0023] The high-consistency refiner includes: a rotating shaft and a bearing housing mounting frame, wherein a baffle is coaxially provided at one end of the rotating shaft;

[0024] The front bearing and the rear bearing are assembled on the rotating shaft. A bearing housing, a bearing housing sleeve and a shaft sleeve are provided between the front bearing and the rear bearing. The bearing housing is fixed on the bearing housing mounting bracket and the bearing housing sleeve is interlocked with the bearing housing.

[0025] The other end of the rotating shaft is fitted with a pressure port cylinder and a thrust nut is screwed on. A thrust washer fitted on the rotating shaft is sandwiched between the pressure port cylinder and the thrust nut.

[0026] The front and rear ends of the front bearing abut against the baffle and the bearing housing, respectively; the front and rear ends of the rear bearing abut against the bearing housing sleeve and the pressure port cylinder, respectively.

[0027] The bearing housing is provided with a mandrel extending in the front-to-back direction. A butterfly spring and an adjusting shim are sleeved on the mandrel. The front and rear ends of the butterfly spring abut against the bearing housing and the bearing housing sleeve, respectively. The adjusting shim is sandwiched between the bearing housing and the butterfly spring.

[0028] Furthermore, the bearing housing and the bearing housing sleeve have a clearance between their opposite end faces;

[0029] The right protrusion of the bearing housing sleeve relative to the bearing housing is the axial distance for positioning the bearing housing sleeve. This axial distance is used to calculate the clearance between the relative end faces of the bearing housing and the bearing housing sleeve.

[0030] Furthermore, the axial distance between the inner end faces of the bearing assembly of the front and rear bearings = the axial distance between the outer end faces of the bearing assembly - the axial distance between the front bearings - the axial distance between the rear bearings.

[0031] Furthermore, the axial distance of the bushing is equal to the axial distance of the inner end face of the bearing assembly.

[0032] Furthermore, chamfers are provided at the outer wall edges of both ends of the bushing.

[0033] The beneficial effects of the thrust self-aligning roller bearing clearance adjustment tooling and method for high-consistency refiners of the present invention are as follows:

[0034] 1. By machining the bushing with tooling, the axial spacing of the bearing is limited; by positioning the axial distance with the bearing housing sleeve, the tooling clearance is verified to be within a reasonable range; thus, it is applicable to the bearing assembly work of various models of high-consistency refiners, and the assembled bearings are within a reasonable stress range.

[0035] 2. Adjust the shims by machining with tooling, and use shims of different thicknesses to ensure that the elastic force of the disc spring is uniform. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the tooling in an example of the present invention;

[0037] Figure 2 This is an assembly diagram of an example of the present invention;

[0038] Figure 3 This is an example of the present invention. Figure 2 An enlarged schematic diagram of part A in the middle.

[0039] In the picture:

[0040] 10. Tooling shaft; 11. Tooling retainer; 12. Pressure ring; 13. Push cylinder.

[0041] 21. Front bearing; 22. Rear bearing.

[0042] 31. Tooling bearing housing; 32. Tooling bearing housing sleeve; 33. Tooling mandrel; 34. Disc spring.

[0043] 100. Rotary shaft; 101. Baffle plate; 102. Pressure port cylinder; 103. Thrust nut; 104. Thrust washer; 105. Bearing housing mounting bracket.

[0044] 301. Bearing housing; 302. Bearing housing sleeve; 303. Mandrel; 304. Jacket seat.

[0045] 200, bushing,

[0046] 401. Axial distance of the front bearing; 402. Axial distance of the rear bearing; 403. Tooling clearance; 404. Axial distance of the outer end face of the bearing assembly; 405. Axial distance of the bearing housing sleeve positioning; 406. Axial distance of the inner end face of the bearing assembly. Detailed Implementation

[0047] To more clearly and explicitly illustrate the specific objectives and implementation methods of this invention, a complete description of the technical solution of this invention will be provided below. The described embodiments are only a part of the embodiments of this invention, not all of them. Without creative effort, all other embodiments based on the embodiments described in this invention are within the protection scope of this invention.

[0048] This invention relates to a thrust self-aligning roller bearing clearance adjustment fixture for a high-consistency pulp refiner, such as... Figure 1 As shown, it includes: a tooling shaft 10, one end of which is coaxially provided with a tooling baffle 11; a front bearing 21 and a rear bearing 22 are sleeved on the tooling shaft 10, and a tooling bearing chamber 31 and a tooling bearing chamber sleeve 32 are provided between the front bearing 21 and the rear bearing 22. The front and rear ends of the front bearing 21 abut against the tooling baffle 11 and the tooling bearing chamber 31 respectively, the front end of the rear bearing 22 abuts against the tooling bearing chamber sleeve 32, and the rear end of the rear bearing 22 abuts against a pressure ring 12. The rear end of the pressure ring 12 is provided with a push cylinder 13, which is driven by a hydraulic device and moves in the front-rear direction. The pushing pressure of the push cylinder 13 is determined according to the liquid supply pressure.

[0049] A tooling mandrel 33 extending in the front-to-back direction is provided inside the tooling bearing chamber 31. A butterfly spring 34 is sleeved on the tooling mandrel 33. The front and rear ends of the butterfly spring 34 abut against the tooling bearing chamber 31 and the tooling bearing chamber sleeve 32, respectively. The opposite end faces of the tooling bearing chamber 31 and the tooling bearing chamber sleeve 32 are separated by a gap. An adjusting shim sleeved on the tooling mandrel 33 is provided in contact between the butterfly spring 34 and the tooling bearing chamber 31.

[0050] According to the specific structure of the thrust self-aligning roller bearing clearance adjustment tooling for the high-consistency refiner in the above embodiments, such as Figure 2 , Figure 3 As shown below, the adjustment method of the thrust self-aligning roller bearing clearance adjustment fixture for high-consistency refiners will be further explained:

[0051] S1. Bearing Measurement:

[0052] Measure the axial distance 401 of the front bearing 21 and the axial distance 402 of the rear bearing 22, and record the results.

[0053] S2. Tooling Installation:

[0054] The hydraulic equipment drives the pusher 13 to sequentially mount the front bearing 21, the tool bearing chamber 31, the tool bearing chamber sleeve 32, the rear bearing 22, and the pressure ring 12 onto the tooling shaft 10, pressing them together. At this time, the tool bearing chamber 31 and the tool bearing chamber sleeve 32 approach each other, causing the disc spring 34 to contract and provide thrust. The tooling clearance 403 between the opposite end faces of the tool bearing chamber 31 and the tool bearing chamber sleeve 32 is 0.27±0.01mm.

[0055] Record the adjusting shims that mate with the disc spring 34;

[0056] S3, Bearing assembly measurement:

[0057] Measure and record the axial distance 404 between the outer end faces of the bearing assembly of the front bearing 21 and the rear bearing 22;

[0058] Dismantle the equipment.

[0059] S4. Bearing assembly:

[0060] A high-consistency refiner includes: a rotating shaft 100 and a bearing housing mounting frame 105, wherein a baffle 101 is coaxially provided at one end of the rotating shaft 100;

[0061] The front bearing 21 and the rear bearing 22 are assembled on the rotating shaft 100. A bearing housing 301, a bearing housing sleeve 302 and a bushing 200 are provided between the front bearing 21 and the rear bearing 22. The axial distance of the bushing 200 is equal to the axial distance of the inner end face of the bearing assembly 406. Chamfers are provided at the outer wall edges at both ends of the bushing 200. The bearing housing 301 is fixed on the bearing housing mounting bracket 105. The bearing housing sleeve 302 is interlocked with the bearing housing 301.

[0062] The other end of the rotating shaft 100 is fitted with a pressure port cylinder 102 and a thrust nut 103 is screwed on. A thrust washer 104 fitted on the rotating shaft 100 is sandwiched between the pressure port cylinder 102 and the thrust nut 103.

[0063] The front and rear ends of the front bearing 21 abut against the baffle 101 and the bearing housing 301, respectively; the front and rear ends of the rear bearing 22 abut against the bearing housing sleeve 302 and the pressure cylinder 102, respectively.

[0064] A mandrel 303 extending in the front-to-back direction is provided inside the bearing housing 301. A butterfly spring 34 and an adjusting shim are sleeved on the mandrel 303. The front and rear ends of the butterfly spring 34 abut against the bearing housing 301 and the bearing housing sleeve 302, respectively. The relative end faces of the bearing housing 301 and the bearing housing sleeve 302 are separated by a gap. The adjusting shim is sandwiched between the bearing housing 301 and the butterfly spring 34. The right protrusion of the bearing housing sleeve 302 relative to the bearing housing 301 is the bearing housing sleeve positioning axial distance 405. The bearing housing sleeve positioning axial distance 405 is used to calculate the relative end face gap of the bearing housing 301 and the bearing housing sleeve 302.

[0065] The axial distance 406 between the inner end faces of the bearing assembly of the front bearing 21 and the rear bearing 22 is equal to the axial distance 404 between the outer end faces of the bearing assembly - the axial distance 401 between the front bearing and the rear bearing - the axial distance 402 between the rear bearing.

[0066] Based on the specific structure of the thrust self-aligning roller bearing clearance adjustment fixture for high-consistency refiners in the above embodiments, the adjustment method of the thrust self-aligning roller bearing clearance adjustment fixture for high-consistency refiners will be further explained below:

[0067] In summary, the above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the invention. Based on the above description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of the present invention is not limited to the contents of the specification; all equivalent variations and modifications of the shape, structure, features, and spirit described within the scope of the claims should be included within the scope of the claims.

Claims

1. A method for adjusting the clearance of a thrust self-aligning roller bearing in a high-consistency refiner, wherein the high-consistency refiner includes: A rotating shaft (100) and a bearing housing mounting bracket (105) are provided. A baffle (101) is coaxially mounted on one end of the rotating shaft (100). The adjustment fixture includes a fixture shaft (10), a fixture baffle (11) is coaxially mounted on one end of the fixture shaft (10), a front bearing (21) and a rear bearing (22) are fitted on the fixture shaft (10), a fixture bearing housing (31) and a fixture bearing housing sleeve (32) are provided between the front bearing (21) and the rear bearing (22), and the relative end faces of the fixture bearing housing (31) and the fixture bearing housing sleeve (32) are spaced apart. The front bearing (21) is positioned at the front end of the fixture bearing housing (31). The rear two ends abut against the tooling retainer (11) and the tooling bearing chamber (31) respectively. The front end of the rear bearing (22) abuts against the tooling bearing chamber sleeve (32). The rear end of the rear bearing (22) is provided with a pressure ring (12). The rear end of the pressure ring (12) is provided with a push cylinder (13). The tooling bearing chamber (31) is provided with a tooling mandrel (33) extending in the front-rear direction. The tooling mandrel (33) is sleeved with a butterfly spring (34). The front and rear ends of the butterfly spring (34) abut against the tooling bearing chamber (31) and the tooling bearing chamber sleeve (32) respectively. The characteristic is that: The adjustment method includes: S1. Bearing Measurement: Measure the axial distance (401) of the front bearing (21) and the axial distance (402) of the rear bearing (22), and record the results respectively. S2. Tooling Installation: The hydraulic equipment drives the pusher (13) to sequentially mount the front bearing (21), the tool bearing chamber (31), the tool bearing chamber sleeve (32), the rear bearing (22), and the pressure ring (12) onto the tooling shaft (10). At this time, the tool bearing chamber (31) and the tool bearing chamber sleeve (32) approach each other, causing the disc spring (34) to contract and provide thrust. The tooling clearance (403) between the opposite end faces of the tool bearing chamber (31) and the tool bearing chamber sleeve (32) is 0.27±0.01mm. Record the adjusting shims that mate with the disc spring (34); S3, Bearing assembly measurement: Measure and record the axial distance (404) between the outer end faces of the bearing sets of the front bearing (21) and the rear bearing (22); Dismantle the tooling; S4. Bearing assembly: The front bearing (21) and the rear bearing (22) are assembled on the rotating shaft (100). A bearing housing (301), a bearing housing sleeve (302) and a bushing (200) are provided between the front bearing (21) and the rear bearing (22). The bearing housing (301) is fixed on the bearing housing mounting bracket (105). The bearing housing sleeve (302) is snapped into the bearing housing (301). The gap between the opposite end faces of the bearing housing (301) and the bearing housing sleeve (302) is provided. The other end of the rotating shaft (100) is fitted with a pressure cylinder (102) and a thrust nut (103) is screwed on. A thrust washer (104) fitted on the rotating shaft (100) is sandwiched between the pressure cylinder (102) and the thrust nut (103). The front and rear ends of the front bearing (21) abut against the baffle (101) and the bearing housing (301) respectively, and the front and rear ends of the rear bearing (22) abut against the bearing housing sleeve (302) and the pressure cylinder (102) respectively. A spindle (303) extending in the front-to-back direction is provided inside the bearing housing (301). A butterfly spring (34) and an adjusting shim are sleeved on the spindle (303). The front and rear ends of the butterfly spring (34) abut against the bearing housing (301) and the bearing housing sleeve (302) respectively. The adjusting shim is sandwiched between the bearing housing (301) and the butterfly spring (34). The right protrusion of the bearing housing sleeve (302) relative to the bearing housing (301) is the bearing housing sleeve positioning axial distance (405), which is used to verify the relative end face clearance between the bearing housing (301) and the bearing housing sleeve (302).

2. The adjustment method of the thrust self-aligning roller bearing clearance adjustment fixture for a high-consistency refiner according to claim 1, characterized in that: The axial distance (406) between the inner end faces of the bearing assembly of the front bearing (21) and the rear bearing (22) is equal to the axial distance (404) between the outer end faces of the bearing assembly - the axial distance (401) between the front bearing and the rear bearing - the axial distance (402) between the rear bearing.

3. The adjustment method of the thrust self-aligning roller bearing clearance adjustment fixture for high-consistency refiners according to claim 2, characterized in that: The axial distance of the bushing (200) is equal to the axial distance of the inner end face of the bearing assembly (406).

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