High-speed rotor bearing for rotor spinning machine

Abstract

The invention relates to the technical field of rotor bearings, and discloses a high-speed rotor bearing for a rotor spinning machine, which comprises a rotor, a bearing rod and a bearing outer ring, one end of the bearing rod is detachably connected with the rotor, and the bearing outer ring is rotatably sleeved on the bearing rod; a pair of ball mechanisms is arranged between the bearing rod and the bearing outer ring and located at the two ends of the bearing outer ring respectively. A sliding outer sleeve is arranged between the ball mechanism far away from the revolving cup and the bearing outer ring, or sliding outer sleeves are respectively arranged between the pair of ball mechanisms and the bearing outer ring; according to the rotary cup bearing, the maximum threshold value of the rotating speed capable of being borne by the rotary cup bearing can be increased, and therefore the use efficiency of the rotary cup bearing is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rotor bearings, in particular to a high-speed rotor bearing for a rotor spinning machine. Background Art

[0002] Rotor spinning machines are widely used for processing fiber material or roving into processable yarn or thread by means of a spinning rotor of a spinning rotor assembly.

[0003] The bearings used in rotor spinning machines mainly use rolling elements installed between the outer ring and the core shaft and positioned with a cage. In actual applications, the rotor bearings using the existing assembly method have poor load-bearing capacity and cannot operate at high speeds. Summary of the invention

[0004] The object of the present invention is to provide a high-speed rotor bearing for a rotor spinning machine, aiming to solve or improve at least one of the above-mentioned technical problems.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides a high-speed rotor bearing for a rotor spinning machine, comprising a rotor, a bearing rod with one end detachably connected to the rotor, and a bearing outer ring rotatably sleeved on the bearing rod;

[0006] A pair of ball mechanisms are provided between the bearing rod and the bearing outer ring, and the pair of ball mechanisms are respectively located at two ends of the bearing outer ring;

[0007] A sliding sleeve is provided between the ball mechanism away from the rotating cup and the outer ring of the bearing, or a sliding sleeve is provided between a pair of the ball mechanisms and the outer ring of the bearing respectively;

[0008] A wave spring is arranged between the sliding sleeve and the bearing outer ring.

[0009] Optionally, a shock-absorbing and clearance-eliminating device is provided between the sliding sleeve and the bearing outer ring.

[0010] Optionally, the ball mechanism comprises:

[0011] A channel is circumferentially opened on the side wall of the bearing rod;

[0012] A retainer, arranged on the bearing rod;

[0013] A plurality of balls are circumferentially arranged on the retaining frame, and the ball clearance fits between the groove and the outer ring of the bearing, or the ball clearance fits between the groove and the sliding sleeve.

[0014] Optionally, dustproof gaskets are provided between both ends of the bearing outer ring and the bearing rod via compression springs.

[0015] Optionally, a dustproof groove is provided on the inner side wall of the dustproof gasket.

[0016] Optionally, an oil storage gasket is arranged between the dustproof gasket away from the rotor cup and the sliding sleeve, and an oil storage groove is arranged on the end surface of the oil storage gasket facing the rotor cup, and the oil storage gasket does not contact the sliding sleeve.

[0017] Optionally, the oil storage gasket is a porous structure.

[0018] Optionally, an oil filling hole is provided on the outer ring of the bearing, and the oil filling hole is connected to the gap between the outer ring of the bearing and the bearing rod, or the oil filling hole is connected to the oil storage gasket.

[0019] Optionally, a magnetic disk is connected to the bearing rod, a magnet groove is provided on the magnetic disk, a magnet is arranged in the magnet groove, and the magnet is attracted to the rotating cup.

[0020] Optionally, a sextuple connector coaxial with the bearing rod is provided at one end of the bearing rod close to the rotating cup, and a guide groove and a hexagonal groove coaxially connected to the guide groove are provided on the rotating cup, the bearing rod is inserted into the guide groove, and the sextuple connector is inserted into the hexagonal groove.

[0021] The present invention discloses the following technical effects:

[0022] 1. By setting a sliding sleeve between the ball mechanism and the outer ring of the bearing and using a wave spring to support the sliding sleeve, the contact efficiency between the sliding sleeve and the ball mechanism can be improved, so that the ball mechanism can withstand radial loads and axial loads in two directions, and the maximum speed threshold that the rotor bearing can withstand is increased to 15W, thereby improving the use efficiency of the rotor bearing.

[0023] 2. The bearing rod and the rotating cup in the present invention can be quickly disassembled and assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0025] Figure 1 A perspective view of the present invention;

[0026] Figure 2 It is a schematic diagram of the bearing rod structure of the present invention;

[0027] Figure 3 is a cross-sectional view of the present invention;

[0028] Figure 4This is a schematic diagram of the structure of Example 2.

[0029] In the figure: 1. rotating cup; 2. bearing rod; 3. outer ring of bearing; 4. ball mechanism; 41. groove; 42. retaining frame; 43. ball; 5. sliding sleeve; 6. wave spring; 7. shock-absorbing and gap-eliminating device; 8. clamping spring; 9. dust-proof gasket; 91. dust-proof groove; 10. oil storage gasket; 101. oil storage groove; 11. oil filling hole; 12. magnetic disk; 13. magnet; 14. six-point connector; 15. guide groove; 16. hexagonal groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Example 1, reference Figure 1-Figure 3 The present invention provides a high-speed rotor bearing for a rotor spinning machine, comprising a rotor 1, a bearing rod 2 whose one end is detachably connected to the rotor 1, and a bearing outer ring 3 rotatably sleeved on the bearing rod 2;

[0033] A pair of ball mechanisms 4 are provided between the bearing rod 2 and the bearing outer ring 3, and the pair of ball mechanisms 4 are respectively located at two ends of the bearing outer ring 3;

[0034] A sliding sleeve 5 is provided between the ball mechanism 4 away from the rotor cup 1 and the bearing outer ring 3;

[0035] A wave spring 6 is arranged between the sliding sleeve 5 and the bearing outer ring 3, and the pressure of the wave spring 6 is appropriate.

[0036] By providing a sliding sleeve 5 between the ball mechanism 4 and the bearing outer ring 3 and supporting the sliding sleeve 5 with a wave spring 6, the contact efficiency between the sliding sleeve 5 and the ball mechanism 4 can be improved, so that the ball mechanism 4 can withstand radial loads and axial loads in two directions, thereby increasing the maximum threshold value of the rotation speed that the rotor bearing can withstand, thereby improving the use efficiency of the rotor bearing.

[0037] Furthermore, the diameter of the bearing rod 2 is 6-12 mm.

[0038] Furthermore, the bearing rod 2 can be used for conventional belt drive or motor drive.

[0039] In a high-speed rotor bearing for a rotor spinning machine provided by the present invention, a shock-absorbing and backlash-eliminating device 7 is provided between a sliding outer sleeve 5 and a bearing outer ring 3 .

[0040] The vibration-absorbing and gap-eliminating device 7 is clearance-matched with the sliding sleeve 5 and the bearing outer ring 3 to eliminate the gap and reduce vibration.

[0041] In a high-speed rotor bearing for a rotor spinning machine provided by the present invention, the ball mechanism 4 comprises:

[0042] A groove 41 is circumferentially formed on the side wall of the bearing rod 2;

[0043] A retainer 42 is provided on the bearing rod 2;

[0044] A plurality of balls 43 are circumferentially arranged on the retaining frame 42, and preferably there are six balls 43;

[0045] One group of balls 43 is clearance-fitted between the groove 41 and the bearing outer ring 3 , and the other group of balls 43 is clearance-fitted between the groove 41 and the sliding sleeve 5 .

[0046] The ball 43 is restrained in position by the retaining frame 42, and through cooperation with the sliding sleeve 5 and the wave spring 6, the contact angle between the ball 43 and the groove 41 is "O" type, so that the ball 43 can withstand radial loads and axial loads in two directions.

[0047] Furthermore, the distance between a pair of channels 41 is 20-50 mm.

[0048] In a high-speed rotor bearing for a rotor spinning machine provided by the present invention, dustproof gaskets 9 are respectively arranged between the two ends of the bearing outer ring 3 and the bearing rod 2 through compression springs 8. The inner wall of the dustproof gasket 9 is provided with a dustproof groove 91.

[0049] The dustproof gasket 9 is used to improve the sealing performance of the rotor bearing, and the dustproof groove 91 in the dustproof gasket 9 can throw dust into the dustproof groove 91 for aggregation when the bearing rod 2 rotates at a high speed.

[0050] In a high-speed rotor bearing for a rotor spinning machine provided by the present invention, an oil storage gasket 10 is arranged between a dustproof gasket 9 away from the rotor 1 and a sliding sleeve 5, and an oil storage groove 101 is arranged on the end surface of the oil storage gasket 10 facing the rotor 1, and the oil storage gasket 10 does not contact the sliding sleeve 5.

[0051] The oil storage tank 101 can store lubricating grease to achieve long-term maintenance-free effect. During the operation of the rotor bearing, since the rotor 1 is always in a negative pressure state, the grease of the oil storage gasket 10 will move to one end of the rotor 1 to lubricate the gap in the rotor bearing.

[0052] In the high-speed rotor bearing for a rotor spinning machine provided by the present invention, the oil storage gasket 10 is a porous structure.

[0053] In a high-speed rotor bearing for a rotor spinning machine provided by the present invention, an oil filling hole 11 is provided on the bearing outer ring 3, and the oil filling hole 11 is connected to the gap between the bearing outer ring 3 and the bearing rod 2, or the oil filling hole 11 is connected to the oil storage gasket 10.

[0054] Lubricating oil can be injected into the rotor bearing through the oil filling hole 11.

[0055] In a high-speed rotor bearing for a rotor spinning machine provided by the present invention, a magnetic disk 12 is connected to a bearing rod 2, a magnet groove is provided on the magnetic disk 12, a magnet 13 is arranged in the magnet groove, and the magnet 13 is attracted to the rotor 1.

[0056] The magnetic disk 12 and the bearing rod 2 are interference fit, and the magnet 13 and the magnet slot are bonded, which can improve the stability of the connection between the bearing rod 2 and the rotating cup 1.

[0057] In a high-speed rotor bearing for a rotor spinning machine provided by the present invention, a six-point connector 14 coaxial with the bearing rod 2 is provided at one end of the bearing rod 2 close to the rotor 1, a guide groove 15 and a hexagonal groove 16 coaxially connected to the guide groove 15 are provided on the rotor 1, the bearing rod 2 is inserted into the guide groove 15, and the six-point connector 14 is inserted into the hexagonal groove 16.

[0058] The connection stability between the bearing rod 2 and the rotor 1 is improved by the six-point connector 14 and the hexagonal groove 16. There is a clearance fit between the two, and there is a clearance fit between the guide groove 15 and the bearing rod 2, which is used to improve the axial assembly accuracy between the rotor 1 and the bearing rod 2.

[0059] The assembly method of the hexagonal groove 16, the six-point connector 14, the magnetic disk 12 and the magnet 13 can facilitate the disassembly and replacement of the rotor cup 1 when the rotor cup 1 is used for a long time and its surface is easily worn and needs to be replaced or cleaned from time to time.

[0060] Example 2, reference Figure 4 The difference between this embodiment and embodiment 1 is that a sliding sleeve 5 is respectively provided between a pair of ball mechanisms 4 and the bearing outer ring 3, which can further increase the maximum rotation speed threshold of the rotor bearing.

[0061] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0062] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A high-speed rotor bearing for a rotor spinning machine, characterized in that: It comprises a rotating cup (1), a bearing rod (2) one end of which is detachably connected to the rotating cup (1), and a bearing outer ring (3) rotatably sleeved on the bearing rod (2); A pair of ball mechanisms (4) are provided between the bearing rod (2) and the bearing outer ring (3), and the pair of ball mechanisms (4) are respectively located at two ends of the bearing outer ring (3); A sliding sleeve (5) is provided between the ball mechanism (4) away from the rotating cup (1) and the bearing outer ring (3), or a sliding sleeve (5) is provided between a pair of the ball mechanisms (4) and the bearing outer ring (3); A wave spring (6) is arranged between the sliding sleeve (5) and the bearing outer ring (3).

2. A high-speed rotor bearing for a rotor spinning machine according to claim 1, characterized in that: A shock-absorbing and clearance-eliminating device (7) is provided between the sliding outer sleeve (5) and the bearing outer ring (3).

3. The high-speed rotor bearing for a rotor spinning machine according to claim 1, characterized in that: The ball mechanism (4) comprises: A channel (41) is circumferentially arranged on the side wall of the bearing rod (2); A retaining frame (42) is arranged on the bearing rod (2); A plurality of balls (43) are circumferentially arranged on the retaining frame (42), and the balls (43) are clearance-fitted between the groove (41) and the bearing outer ring (3), or the balls (43) are clearance-fitted between the groove (41) and the sliding sleeve (5).

4. The high-speed rotor bearing for a rotor spinning machine according to claim 1, characterized in that: Dustproof gaskets (9) are provided between the two ends of the bearing outer ring (3) and the bearing rod (2) via compression springs (8).

5. A high-speed rotor bearing for a rotor spinning machine according to claim 4, characterized in that: The inner side wall of the dustproof gasket (9) is provided with a dustproof groove (91).

6. A high-speed rotor bearing for a rotor spinning machine according to claim 4, characterized in that: An oil storage gasket (10) is arranged between the dustproof gasket (9) away from the rotor cup (1) and the sliding sleeve (5); an oil storage groove (101) is arranged on the end surface of the oil storage gasket (10) facing the rotor cup (1); and the oil storage gasket (10) does not contact the sliding sleeve (5).

7. A high-speed rotor bearing for a rotor spinning machine according to claim 6, characterized in that: The oil storage gasket (10) is a porous structure.

8. The high-speed rotor bearing for a rotor spinning machine according to claim 1, characterized in that: The bearing outer ring (3) is provided with an oil filling hole (11), and the oil filling hole (11) is connected to the gap between the bearing outer ring (3) and the bearing rod (2), or the oil filling hole (11) is connected to the oil storage gasket (10).

9. The high-speed rotor bearing for a rotor spinning machine according to claim 1, characterized in that: The bearing rod (2) is connected to a magnetic disk (12), the magnetic disk (12) is provided with a magnet groove, a magnet (13) is arranged in the magnet groove, and the magnet (13) is attracted to the rotating cup (1).

10. The high-speed rotor bearing for a rotor spinning machine according to claim 1, characterized in that: A six-way connector (14) coaxial with the bearing rod (2) is provided at one end of the bearing rod (2) close to the rotating cup (1); a guide groove (15) and a hexagonal groove (16) coaxially connected to the guide groove (15) are provided on the rotating cup (1); the bearing rod (2) is inserted into the guide groove (15), and the six-way connector (14) is inserted into the hexagonal groove (16).

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