Bearing sleeve

Abstract

The bearing sleeve comprises an adapter sleeve, a limiting backing ring and a locking nut, an external thread section is arranged on the small-diameter side of the adapter sleeve, a through groove is formed in the adapter sleeve in the axial direction, internal threads matched with the external thread section are arranged on the inner side of the locking nut, mounting grooves are evenly formed in the large-diameter end of the adapter sleeve in the axial direction towards the small-diameter end, and the limiting backing ring is arranged in the mounting grooves. The mounting grooves extend to the external thread section and do not penetrate through the side wall of the adapter sleeve, wear-resisting strips are detachably clamped in the mounting grooves, the wear-resisting strips are in an arc shape matched with the inner side of the adapter sleeve, clamping grooves are formed in the portions, corresponding to the external thread section, of the wear-resisting strips, and clamping blocks matched with the clamping grooves are arranged on the inner side of the limiting backing ring. According to the utility model, the wear-resisting strip can be worn firstly during working, and a new wear-resisting strip can be replaced after the wear-resisting strip is worn, so that the locking effect of the adapter sleeve and the limiting backing ring is enhanced, and the service life of the bearing sleeve is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to bearing tight bush technology field, concretely relates to a bearing bush. BACKGROUND

[0002] The bearing bush is a kind of bearing fixing mechanism for sleeving shaft rod to keep stable when high-speed rotating, and the bearing tight bush is one kind of bearing bush, which is used to fix conical hole plunger bearing (plunger ball bearing, plunger roller bearing) on shaft shoulderless shaft, and has simple structure, reliable work, convenient bearing replacement and wide use in textile, light industry, papermaking, metallurgy, belt transportation and conveying equipment industries.

[0003] The existing bearing tight bush is prone to slight sliding due to high-speed rotation of shaft rod during use, and is prone to internal wear of shaft bush after long use time, reducing the service life of bearing tight bush;And the locking of the existing locking nut and the limiting washer is through the clamping pieces evenly distributed on the outer periphery of the limiting washer to knock into the clamping groove on the outer periphery of the locking nut after locking, this locking mode needs the clamping groove and the clamping piece to be aligned when the locking nut is tightened, which has certain influence on the locking effect, and the gap is large in long-term use, which also causes the phenomenon of looseness, affecting the service life. UTILITY MODEL CONTENTS

[0004] In order to overcome the deficiencies of the prior art, the utility model provides a bearing bush.

[0005] The utility model employs the technical scheme that a bearing bush includes tight bush, limiting washer and locking nut, the small-diameter side of the tight bush is provided with an external thread section, the tight bush is axially provided with a through groove, the inner side of the locking nut is provided with an internal thread matched with the external thread section, the large-diameter end of the tight bush is uniformly provided with a mounting groove along the axial direction to the small-diameter end, the mounting groove extends to the external thread section and does not penetrate the side wall of the tight bush, the wear-resistant strip is detachably clamped in the mounting groove, the wear-resistant strip is arc-shaped matched with the inner side of the tight bush, the part of the wear-resistant strip corresponding to the external thread section is provided with a clamping groove, and the inner side of the limiting washer is provided with a clamping block matched with the clamping groove.

[0006] Further, the limiting washer includes first half ring and second half ring, the connecting ears on both sides of the first half ring and the second half ring are provided, the connecting holes are formed in the connecting ears, and the connecting ears corresponding to the first half ring and the second half ring are connected by bolts and nuts.

[0007] Further, the mounting groove is provided with an insertion groove on both sides of the bottom, the wear-resistant strip is matched with the mounting groove, and the wear-resistant strip is provided with an insertion strip matched with the insertion groove on both sides of the bottom.

[0008] Further, the lock nut is provided with a mounting hole at the end face away from the limiting washer, the mounting hole penetrates the lock nut, a spring and a limiting clamping strip are sequentially arranged in the mounting hole from the end away from the limiting washer along the axial direction, a base is arranged at the bottom of the limiting clamping strip, the base abuts against the spring, a limiting lug is arranged at the middle upper portion of the limiting clamping strip, the upper portion of the limiting lug extends out of the mounting hole, the head of the limiting clamping strip is provided with an inclined surface, the end face of the limiting washer close to the lock nut is provided with a ring of inclined surface clamping blocks matched with the limiting clamping strip, the inclined surface of the limiting clamping strip abuts against the inclined surface of the inclined surface clamping block when the lock nut is screwed, and the back surface of the inclined surface of the limiting clamping strip abuts against the back surface of the inclined surface of the inclined surface clamping block when the lock nut is loosened.

[0009] Further, the lock nut is provided with a mounting hole at the end face away from the limiting washer, the mounting hole penetrates the lock nut, a spring and a limiting clamping strip are sequentially arranged in the mounting hole from the end away from the limiting washer along the axial direction, a base is arranged at the bottom of the limiting clamping strip, the base abuts against the spring, a limiting lug is arranged at the middle upper portion of the limiting clamping strip, the upper portion of the limiting lug extends out of the mounting hole, the head of the limiting clamping strip is provided with an inclined surface, the end face of the limiting washer close to the lock nut is provided with a ring of inclined surface clamping blocks matched with the limiting clamping strip, the inclined surface of the limiting clamping strip abuts against the inclined surface of the inclined surface clamping block when the lock nut is screwed, and the back surface of the inclined surface of the limiting clamping strip abuts against the back surface of the inclined surface of the inclined surface clamping block when the lock nut is loosened.

[0010] The utility model discloses a detachable wear -resisting strip is arranged in the inside of the lock sleeve, and the wear -resisting strip is abraded first when working, and the new wear -resisting strip can be replaced after the wear -resisting strip is abraded, thereby prolonging the service life of the bearing sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structure schematic drawing of the utility model.

[0012] Figure 2 It is the structure schematic drawing of the utility model lock sleeve.

[0013] Figure 3 It is the structure schematic drawing of the utility model wear -resisting strip.

[0014] Figure 4 It is the structure schematic drawing of the utility model lock sleeve and wear -resisting strip cooperation.

[0015] Figure 5 It is the structure schematic drawing of the utility model limiting washer.

[0016] Figure 6 It is the structure schematic drawing of the utility model lock nut and top ring cooperation.

[0017] Figure 7 It is the structure schematic drawing in the mounting hole of the utility model lock nut.

[0018] In the diagram: 100. Set sleeve, 101. External thread section, 102. Through groove, 103. Mounting groove, 1031. Slot, 200. Limiting washer ring, 201. First half ring, 202. Second half ring, 203. Locking block, 204. Angled locking block, 205. Connecting ear, 300. Locking nut, 301. Mounting hole, 302. Spring, 303. Limiting strip, 3031. Base, 3032. Limiting ear, 400. Wear-resistant strip, 401. Slot, 402. Insert strip, 500. Top ring. Detailed Implementation

[0019] To better understand the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, further illustrates this utility model.

[0020] like Figures 1-7 As shown, a bearing sleeve includes a retaining sleeve 100, a limiting washer 200, and a locking nut 300. The retaining sleeve 100 has an external thread section 101 on its small diameter side and an axially formed through groove 102. The locking nut 300 has an internal thread that mates with the external thread section 101. The retaining sleeve 100 has mounting grooves 103 evenly formed axially from its large diameter end to its small diameter end. The mounting grooves 103 extend to the external thread section 101 but do not penetrate the sidewall of the retaining sleeve 100. Wear-resistant strips 40 are detachably engaged within the mounting grooves 103. 0. The wear-resistant strip 400 is an arc shape that matches the inner side of the locking sleeve 100. The wear-resistant strip 400 has a groove 401 on the part corresponding to the external thread section 101. The inner side of the limiting washer 200 is provided with a locking block 203 that cooperates with the groove 401. In use, first install the wear-resistant strip 400 from the large diameter end of the locking sleeve 100 into the mounting groove 103, then fit the bearing onto the locking sleeve 100, then pass the shaft into the locking sleeve 100, and then install the limiting washer 200 so that the locking block 203 of the limiting washer 200 corresponds to the groove 401 of the wear-resistant strip 400.

[0021] Specifically, the limiting ring 200 includes a first half-ring 201 and a second half-ring 202. Both sides of the first half-ring 201 and the second half-ring 202 are provided with connecting ears 205. Each connecting ear 205 has a connecting hole. The connecting ears 205 corresponding to the first half-ring 201 and the second half-ring 202 are connected by bolts and nuts. In use, the first half-ring 201 and the second half-ring 202 are put on the locking sleeve 100 so that the locking block 203 corresponds to the locking groove 401, and then the bolts and nuts are tightened.

[0022] Specifically, slots 1031 are provided on both sides of the bottom of the mounting groove 103. The wear-resistant strip 400 matches the mounting groove 103 and inserts 402 that cooperate with the slots 1031 are provided on both sides of the bottom of the wear-resistant strip 400. When installing the wear-resistant strip 400, the inserts 402 are inserted into the slots 1031.

[0023] Preferably, the lock nut 300 is provided with a mounting hole 301 at the end away from the limiting grommet 200, the mounting hole 301 penetrates the lock nut 300, the mounting hole 301 is sequentially provided with a spring 302 and a limiting clamping strip 303 from the end away from the limiting grommet 200 along the axial direction, the limiting clamping strip 303 is provided with a base 3031 at the bottom, the base 3031 abuts against the spring 302, the limiting clamping strip 303 is provided with a limiting lug 3032 at the upper part, the part above the limiting lug 3032 of the limiting clamping strip 303 protrudes out of the mounting hole 301, the head of the limiting clamping strip 303 is provided as an inclined surface, the limiting grommet 200 is provided with a circle of inclined surface clamping blocks 204 at the end surface close to the end of the lock nut 300, the inclined surface of the limiting clamping strip 303 abuts against the inclined surface of the inclined surface clamping block 204 when the lock nut 300 is tightened, and the back surface of the inclined surface of the limiting clamping strip 303 abuts against the back surface of the inclined surface of the inclined surface clamping block 204 when the lock nut 300 is loosened.

[0024] Preferably, the lock nut 300 is provided with a plurality of screw holes at the end away from the limiting grommet 200, the screw holes do not interfere with the mounting hole 301, the outer side of the screw holes is provided with a top ring 500, the top ring 500 is provided with through holes corresponding to the screw holes, and the top ring 500 is fixed with the lock nut 300 through bolts, in use, the limiting clamping strip 303 and the spring 302 are sequentially installed into the mounting hole 301, then the top ring 500 abuts against the spring 302, the top ring 500 is locked with the lock nut 300 through bolts, after the wear-resistant strip 400, the limiting grommet 200 and the lock nut 100 are installed in place, the lock nut 300 is tightened on the external thread section 101 of the lock nut 100, when the limiting clamping strip 303 contacts the inclined surface clamping block 204, the inclined surface of the limiting clamping strip 303 abuts against the inclined surface of the inclined surface clamping block 204, and the spring 302 is compressed, the lock nut 300 is smoothly tightened, when the lock nut 300 and the limiting grommet 200 are loosened during work, the back surface of the inclined surface of the limiting clamping strip 303 abuts against the back surface of the inclined surface of the inclined surface clamping block 204, thereby preventing the lock nut 300 and the limiting grommet 200 from being loosened.

[0025] Working principle: when using, first install the wear-resistant strip 400 from the large diameter end of the locking sleeve 100 into the installation groove 103, then sleeve the bearing with the locking sleeve 100, then pass the shaft into the locking sleeve 100, then sleeve the first half ring 201 and the second half ring 202 on the locking sleeve 100, make the clamping block 203 correspond to the clamping groove 401, then lock the bolt and nut, then sequentially install the limiting clamping strip 303 and the spring 302 into the installation hole 301, then use the top ring 500 to abut against the spring 302, lock the top ring 500 with the locking sleeve 100 by using the bolt, when the wear-resistant strip 400, the limiting gasket ring 200 and the locking sleeve 100 are installed in place, tighten the locking nut 300 on the external thread section 101 of the locking sleeve 100, when the limiting clamping strip 303 contacts the inclined surface clamping block 204, the inclined surface of the limiting clamping strip 303 abuts against the inclined surface of the inclined surface clamping block 204, the spring 302 is compressed, the locking nut 300 is smoothly tightened, when the locking nut 300 and the limiting gasket ring 200 are loosened during work, the back surface of the inclined surface of the limiting clamping strip 303 abuts against the back surface of the inclined surface of the inclined surface clamping block 204, preventing the locking nut 300 and the limiting gasket ring 200 from being loosened. When the wear-resistant strip 400 needs to be replaced, unscrew the bolt for fixing the top ring 500, then unscrew the locking nut 300, take off the locking sleeve 100 from the shaft, unscrew the bolt and nut of the first half ring 201 and the second half ring 202, make the clamping block 203 disengage from the clamping groove 401, take out the wear-resistant strip 400 from the large diameter end, and insert a new wear-resistant strip 400.

[0026] The above only describes the preferred embodiments of the present application, and equivalent changes or modifications made according to the structure, features and principles of the present application patent application range are included in the present application patent application range.

Claims

1. A bearing sleeve comprising a lock sleeve, a limit washer and a lock nut, the lock sleeve is provided with an external thread section at the small diameter side, the lock sleeve is axially provided with a through slot, the lock nut is provided with an internal thread at the inner side which cooperates with the external thread section, characterized in that, The mounting groove is uniformly arranged on the large-diameter end of the tight sleeve along the axial direction to the small-diameter end, the mounting groove extends to the outer thread section and does not penetrate the side wall of the tight sleeve, the wear-resistant strip is detachably arranged in the mounting groove, the wear-resistant strip is arc-shaped and matched with the inner side of the tight sleeve, the mounting groove is arranged on the part of the wear-resistant strip corresponding to the outer thread section, and the inner side of the limiting grommet is provided with the clamping block matched with the clamping groove.

2. A bearing sleeve according to claim 1, wherein The limiting grommet comprises a first half ring and a second half ring, the first half ring and the second half ring are provided with connecting ears on both sides, the connecting ears are provided with connecting holes, and the connecting ears corresponding to the first half ring and the second half ring are connected through bolts and nuts.

3. A bearing sleeve according to claim 1, wherein The mounting groove is uniformly arranged on the large-diameter end of the tight sleeve along the axial direction to the small-diameter end, the mounting groove extends to the outer thread section and does not penetrate the side wall of the tight sleeve, the wear-resistant strip is detachably arranged in the mounting groove, the wear-resistant strip is arc-shaped and matched with the inner side of the tight sleeve, the mounting groove is arranged on the part of the wear-resistant strip corresponding to the outer thread section, and the inner side of the limiting grommet is provided with the clamping block matched with the clamping groove.

4. A bearing sleeve according to claim 1, wherein The end face of the locking nut away from the limiting grommet is provided with a mounting hole, the mounting hole penetrates the locking nut, a spring and a limiting clamping strip are sequentially arranged in the mounting hole from the end away from the limiting grommet along the axial direction, the bottom of the limiting clamping strip is provided with a base, the base abuts against the spring, a limiting ear is arranged in the middle of the limiting clamping strip, the part above the limiting ear of the limiting clamping strip protrudes out of the mounting hole, the head of the limiting clamping strip is provided with an inclined surface, the end face of the limiting grommet close to the locking nut is provided with a ring of inclined surface clamping blocks matched with the limiting clamping strip, the inclined surface of the limiting clamping strip abuts against the inclined surface of the inclined surface clamping block when the locking nut is screwed, and the back surface of the inclined surface of the limiting clamping strip abuts against the back surface of the inclined surface of the inclined surface clamping block when the locking nut is loosened.

5. A bearing sleeve according to claim 4, wherein The end of the locking nut away from the limiting grommet is provided with a plurality of screw holes, the screw holes do not interfere with the mounting hole, the outer side of the screw hole is provided with a top ring, the top ring is provided with a through hole matched with the screw hole, and the top ring is fixed with the locking nut through bolts.

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