Anti-falling adapter sleeve

Abstract

The utility model relates to the technical field of adapter sleeves, in particular to an anti-falling adapter sleeve. According to the technical scheme, the device comprises a fastening sleeve, a metal gasket and a nut, the outer surface of the fastening sleeve is sleeved with the metal gasket and the nut, fixing threads are arranged at the position, close to the lower surface, of the outer surface of the fastening sleeve, and a penetrating opening is formed in the outer surface of the fastening sleeve; and first sealing grooves are symmetrically formed in the positions, close to the upper surface and the lower surface, of the inner wall of the fastening sleeve, second sealing grooves are symmetrically formed in the positions, close to the two sides of the inserting opening, of the inner wall of the fastening sleeve, and sealing rubber strips are arranged in the two first sealing grooves and the two second sealing grooves correspondingly. In the using process of the adapter sleeve, lubricating oil is prevented from permeating between the adapter sleeve and the shaft, and therefore displacement and slipping of the adapter sleeve on the shaft are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of adapter sleeves, in particular to an anti-falling-off adapter sleeve. Background Art

[0002] The adapter sleeve is the most commonly used component when the bearing with a tapered hole is positioned on a cylindrical shaft. It is easy to install and does not need to be fixed on the shaft. This sleeve can be used for both smooth shafts and stepped shafts. When the adapter sleeve is used on a smooth shaft, the bearing can be positioned at any position on the shaft; when used together with a step ring on a stepped shaft, the bearing can be accurately positioned axially and the removal of the bearing is also convenient.

[0003] The current adapter sleeve is usually composed of a fastening sleeve sleeved on the shaft and a nut and a metal washer sleeved on the fastening sleeve. After the bearing is fixed on the shaft by the adapter sleeve, lubricating oil is usually applied to the bearing to lubricate the bearing. However, during long-term use, the lubricating oil will gradually penetrate between the shaft and the fastening sleeve. Since the outer surface of the shaft and the inner wall of the fastening sleeve are smooth, the friction coefficient between the fastening sleeve and the shaft is reduced. When the equipment vibrates, the fastening sleeve is easily displaced and slipped off the shaft. For this reason, we propose an anti-falling adapter sleeve. Utility Model Content

[0004] The utility model aims to provide an anti-falling adapter sleeve, which has the advantages of preventing lubricating oil from penetrating between the adapter sleeve and the shaft during use of the adapter sleeve, thereby preventing the adapter sleeve from being displaced and slipping on the shaft, and solves the problem that the current adapter sleeve is usually composed of a adapter sleeve sleeved on the shaft and a nut and a metal washer sleeved on the adapter sleeve, and after the bearing is fixed on the shaft by the adapter sleeve, lubricating oil is usually applied to the bearing to lubricate the bearing, but in the process of long-term use, the lubricating oil will gradually penetrate between the shaft and the adapter sleeve, and because the outer surface of the shaft and the inner wall of the adapter sleeve are smooth, the friction coefficient between the adapter sleeve and the shaft is reduced, and when the equipment vibrates, the adapter sleeve is easily displaced and slipped from the shaft.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-falling tightening sleeve, comprising a tightening sleeve, a metal washer and a nut, the outer surface of the tightening sleeve is sleeved with the metal washer and the nut, the outer surface of the tightening sleeve is provided with a fixing thread near the lower surface, the outer surface of the tightening sleeve is provided with an insertion opening, the inner wall of the tightening sleeve is symmetrically provided with first sealing grooves near the upper surface and the lower surface, the inner wall of the tightening sleeve is symmetrically provided with second sealing grooves near the two sides of the insertion opening, and sealing strips are provided inside the two first sealing grooves and the two second sealing grooves.

[0006] Preferably, a limiting ring is provided on the upper outer surface of the fastening sleeve near the upper surface, and the limiting ring serves to limit the bearing on the fastening sleeve.

[0007] Preferably, a limiting protrusion is provided on the inner wall of the metal washer, and the limiting protrusion is located inside the insertion opening. The limiting protrusion and the metal washer are integrally processed to limit the metal washer and prevent the metal washer from rotating.

[0008] Preferably, the metal washer is located above the nut, and the outer surface of the nut is provided with a number of bite grooves equidistantly spaced in a circular array, and each of the bite grooves has a threaded hole on its inner wall. The setting of the bite grooves facilitates the use of a hook-type torque wrench to tighten the nut.

[0009] Preferably, the outer surface of the metal washer is provided with a notch, and a rotating plate is rotatably installed inside the notch, the outer surface of the rotating plate is provided with a through hole, and a locking screw is provided inside the through hole. After the rotating plate is rotated, it enters the inside of the engaging groove, and the locking screw is turned so that one end of it is inserted into the threaded hole. This fixes the rotating plate and limits the rotation of the nut, thereby preventing the nut from loosening.

[0010] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. The utility model achieves the effect of preventing lubricating oil from penetrating between the fastening sleeve and the shaft during the use of the fastening sleeve by arranging a fastening sleeve, a metal washer, a nut, a first sealing groove, a second sealing groove and a sealing strip, thereby preventing the fastening sleeve from being displaced and slipped on the shaft. When the fastening sleeve is sleeved on the shaft, the sealing strip inside the first sealing groove and the second sealing groove can prevent lubricating oil from penetrating between the fastening sleeve and the shaft, thereby preventing the friction coefficient between the fastening sleeve and the shaft from being reduced, and preventing the fastening sleeve from being displaced and slipped from the shaft.

[0012] 2. The utility model achieves the effect of fixing the nut and preventing the nut from loosening by setting the notch, the rotating plate, the through hole and the threaded hole. After the rotating plate is rotated, it enters the inside of the bite groove, and the locking screw is turned so that one end is inserted into the threaded hole, so that the rotating plate is fixed and the rotation of the nut is restricted, thereby preventing the nut from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0014] Figure 2 It is a partial three-dimensional schematic diagram of the fastening sleeve of the utility model;

[0015] Figure 3 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the side sectional structure of the utility model.

[0017] Figure numerals: 1. Fastening sleeve; 2. Limiting ring; 3. Metal washer; 4. Insertion port; 5. Limiting protrusion; 6. Notch; 7. Locking screw; 8. Rotating plate; 9. Nut; 10. Engaging groove; 11. Threaded hole; 12. First sealing groove; 13. Sealing strip; 14. Second sealing groove; 15. Fixing thread; 16. Through hole. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Embodiment 1

[0020] like Figure 1-Figure 3 As shown, the utility model proposes an anti-falling fastening sleeve, including a fastening sleeve 1, a metal washer 3 and a nut 9. The outer surface of the fastening sleeve 1 is sleeved with the metal washer 3 and the nut 9. A limiting ring 2 is arranged near the upper surface of the upper outer surface of the fastening sleeve 1. The limiting ring 1 plays a limiting role for the bearing sleeved on the fastening sleeve 1. The bearing is located between the limiting ring 2 and the metal washer 3. A fixing thread 15 is arranged near the lower surface of the outer surface of the fastening sleeve 1. The nut 9 is tightened and fixed on the fastening sleeve 1 through the fixing thread 15. The outer surface of the fastening sleeve 1 is provided with an insertion port 4. The metal washer 3 A limiting protrusion 5 is provided on the inner wall, and the limiting protrusion 5 is located inside the insertion opening 4. The limiting protrusion 5 and the metal gasket 3 are integrally processed to limit the metal gasket 3 to prevent it from rotating. First sealing grooves 12 are symmetrically provided at the inner wall of the fastening sleeve 1 near the upper surface and the lower surface, and second sealing grooves 14 are symmetrically provided at the inner wall of the fastening sleeve 1 near the two sides of the insertion opening 4. The two first sealing grooves 12 and the two second sealing grooves 14 are connected end to end, and sealing strips 13 are provided inside the two first sealing grooves 12 and the two second sealing grooves 14.

[0021] When the utility model is in use, the fastening sleeve 1 is sleeved on the shaft, the bearing, the metal washer 3 and the nut 9 are sleeved on the outer surface of the fastening sleeve 2, and the metal washer 3 is located between the bearing and the nut 9, and the nut 9 is tightened and fixed on the fastening sleeve 1 by the fixing thread 15, so that the installation of the bearing is completed. During use, the sealing strip 13 inside the first sealing groove 12 and the second sealing groove 14 can prevent the lubricating oil from penetrating between the fastening sleeve 1 and the shaft, thereby avoiding the reduction of the friction coefficient between the fastening sleeve 1 and the shaft, and preventing the fastening sleeve 1 from shifting and slipping off the shaft.

[0022] Embodiment 2

[0023] like Figure 1 , Figure 3 and Figure 4As shown, the utility model proposes an anti-falling fastening sleeve. Compared with the first embodiment, this embodiment also includes a metal washer 3 located above the nut 9, and the outer surface of the nut 9 is provided with a plurality of bite grooves 10 equidistantly arranged in a ring array. The setting of the bite grooves 10 is convenient for tightening the nut 9 with a hook-type torque wrench. A threaded hole 11 is provided on the inner wall of each bite groove 10, a notch 6 is provided on the outer surface of the metal washer 3, and a rotating plate 8 is rotatably installed inside the notch 6, a through hole 16 is provided on the outer surface of the rotating plate 8, and a locking screw 7 is provided inside the through hole 16.

[0024] In this embodiment, after the rotating plate 8 rotates, it enters the engaging groove 10, and the locking screw 7 is turned so that one end thereof is inserted into the threaded hole 11, thereby fixing the rotating plate 8 and limiting the rotation of the nut 9, thereby preventing the nut 9 from loosening.

[0025] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. An anti-dropping fastening sleeve, comprising a fastening sleeve (1), a metal washer (3) and a nut (9), characterized in that: The outer surface of the fastening sleeve (1) is sleeved with a metal washer (3) and a nut (9); a fixing thread (15) is provided on the outer surface of the fastening sleeve (1) near the lower surface; an insertion opening (4) is provided on the outer surface of the fastening sleeve (1); first sealing grooves (12) are symmetrically provided on the inner wall of the fastening sleeve (1) near the upper surface and the lower surface; second sealing grooves (14) are symmetrically provided on the inner wall of the fastening sleeve (1) near the two sides of the insertion opening (4); and sealing strips (13) are provided inside the two first sealing grooves (12) and the two second sealing grooves (14).

2. The anti-dropping adapter sleeve according to claim 1, characterized in that: A limiting ring (2) is provided on the upper outer surface of the fastening sleeve (1) near the upper surface.

3. The anti-dropping adapter sleeve according to claim 1, characterized in that: The inner wall of the metal gasket (3) is provided with a limiting protrusion (5), and the limiting protrusion (5) is located inside the insertion opening (4).

4. The anti-dropping adapter sleeve according to claim 1, characterized in that: The metal washer (3) is located above the nut (9), and the outer surface of the nut (9) is provided with a plurality of engaging grooves (10) at equal intervals in a circular array, and the inner wall of each engaging groove (10) is provided with a threaded hole (11).

5. The anti-dropping adapter sleeve according to claim 4, characterized in that: The outer surface of the metal washer (3) is provided with a notch (6), and a rotating plate (8) is rotatably mounted inside the notch (6); the outer surface of the rotating plate (8) is provided with a through hole (16), and a locking screw (7) is provided inside the through hole (16).

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