CN109026983B

CN109026983B - Can adjust wide and anti-dirt pulley of groove

Info

Publication number: CN109026983B
Application number: CN201811077560.1A
Authority: CN
Inventors: 李良
Original assignee: Zhongshan Nanbo Seoul Machinery Co Ltd
Current assignee: Zhongshan Nanbo Seoul Machinery Co Ltd
Priority date: 2018-09-15
Filing date: 2018-09-15
Publication date: 2020-03-27
Anticipated expiration: 2038-09-15
Also published as: CN109026983A

Abstract

The invention discloses a dirt-resistant pulley capable of adjusting groove width, which comprises: a positioning piece which is a hollow round platform frame with a hole in the middle; the wheel hub is a hollow cylindrical frame with a hole in the middle, an inner ring of the wheel hub is arranged in a protruding mode along the axial direction to form an embedded ring, the embedded ring is matched with a splicing ring with the outer diameter slightly smaller than that of the embedded ring to form a bearing assembly of the pulley, an outer ring of the wheel hub is arranged in a protruding mode along the axial direction in a reverse direction to form a second sleeved ring, and one end of the outer ring of the wheel hub is arranged in a protruding mode along the radial direction outwards to form a first; the movable part is a hollow circular frame, one end of the movable part is provided with a butting ring which protrudes outwards along the radial direction, the movable part is movably sleeved on the second sleeving ring, a guide groove is formed between the butting ring and the first limiting ring, and the movable part can horizontally move along the second sleeving ring to adjust the width of the guide groove. The pulley can meet the transmission requirements of strips, belts or threads with different sizes, and the problem that dust influences the rotation of the pulley is solved.

Description

Can adjust wide and anti-dirt pulley of groove

Technical Field

The invention relates to the technical field of pulleys, in particular to a antifouling pulley capable of adjusting the groove width.

Background

In the field of chain production, chains are conveyed by pulleys. In the prior art, a pulley for conducting a chain is used for fixing a wheel with a fixed groove width to a fastener through a bearing to realize the transmission of the chain.

The inventor finds that the existing guide wheel has at least the following defects: in the use, often need the not unidimensional chain of conveying, in order to satisfy the conveying demand of unidimensional chain, need use the wheel of different groove widths. After long-time use, the bearing position often can be accumulated a lot of dust, and under the condition that the dust is many, the guide wheel is influenced to rotate.

Disclosure of Invention

Objects of the invention

The invention aims to provide a antifouling pulley capable of adjusting the groove width, which meets the conveying requirements of strips, belts or threads with different sizes and avoids the problems that dust influences the rotation of a guide wheel after long-time use and the like.

(II) technical scheme

In order to solve the above problems, in one aspect, the present invention provides a positioning element, where the positioning element is a hollow circular truncated cone frame with an opening in the middle, an inner ring of the positioning element is axially protruded to form an insertion ring, an outer ring of the positioning element is axially protruded to form a first sleeve ring, and a width of the insertion ring is greater than a width of the first sleeve ring.

Furthermore, the inserting ring is of a circular ring structure with the same caliber, and the first sleeving ring is of a circular table structure with a large caliber outside and a small caliber inside.

In another aspect of the present invention, there is provided a dirt-resistant pulley capable of adjusting a groove width, the pulley being fixed to a fastening member, the pulley comprising:

a positioning piece, which is the positioning piece;

the hub is a hollow cylindrical frame with a hole in the middle, an inner ring of the hub is arranged in a protruding mode along the axial direction to form an embedded ring, the embedded ring is matched with the inserting ring with the outer diameter slightly smaller than that of the embedded ring to form a bearing assembly of the pulley, an outer ring of the hub is arranged in a protruding mode along the axial direction to form a second embedded ring in a protruding mode along the axial direction, and one end of the outer ring of the hub is arranged in a protruding mode along the radial direction to form a first limiting ring;

the movable piece is a hollow circular frame, one end of the movable piece is provided with a butting ring which protrudes outwards along the radial direction, the movable piece is movably sleeved on the second sleeving ring, a guide groove is formed between the butting ring and the first limiting ring, and the movable piece can horizontally move along the second sleeving ring to adjust the width of the guide groove.

Further, the movable piece is in interference fit with the second sleeving ring.

Furthermore, a through hole is formed in the center of the other end of the moving part.

Further, the embedded ring, the inserting ring and the second sleeving ring are of circular ring structures with basically consistent calibers.

Further, the width of the first nesting ring is smaller than the width of the embedded ring, and the width of the embedded ring is smaller than the length of the insertion ring.

Further, a scale containing space is formed between the second sleeving ring and the first sleeving ring.

Furthermore, the outer diameter of the inserting ring is equal to or slightly smaller than the inner diameter of the embedding ring, and a preset gap is formed between the embedding ring and the first sleeving ring after the inserting ring is inserted into the hub.

Furthermore, the positioning piece, the wheel hub and the moving piece are all nylon wheels.

(III) advantageous effects

The technical scheme of the invention has the following beneficial technical effects:

1. the pulley is designed into a pulley with adjustable groove width through a positioning piece, a hub and a movable piece, and can adapt to the transmission of belts with different width sizes;

2. the second sleeve ring and the first sleeve ring form a scale receiving space, the first sleeve ring is designed into a round table structure with a caliber large outside and a caliber small inside, and the problem that the scale receiving space is not influenced by rotation of the pulley due to sliding of dust along the round table structure after long-time use is avoided.

3. Compared with the roller bearing in the prior art, the positioning piece, the hub and the moving piece are all nylon wheels, the cost is reduced by utilizing self-lubrication among the nylon wheels, the rotation smoothness is improved, and the design of the pulley ensures that the hub can always smoothly rotate around the positioning piece.

Drawings

FIG. 1 is a cross-sectional view of a sheave of the present invention capable of adjusting groove width;

FIG. 2 is a schematic perspective view of a sheave capable of adjusting a groove width according to the present invention;

FIG. 3a is a side view of the hub of the present invention;

FIG. 3b is a front view of the hub of the present invention;

FIG. 3c is a cross-sectional view A-A of FIG. 3 a;

FIG. 3d is a perspective view of the hub of the present invention;

FIG. 4a is a side view of the moveable member of the present invention;

FIG. 4b is a front view of the moveable member of the present invention;

FIG. 4c is a cross-sectional view A-A of FIG. 4 a;

FIG. 4d is a schematic perspective view of the moveable member of the present invention;

FIG. 5a is a side view of the spacer of the present invention;

FIG. 5b is a front view of the positioning member of the present invention;

FIG. 5c is a cross-sectional view A-A of FIG. 5 a;

fig. 5d is a schematic perspective view of the positioning member of the present invention.

Reference numerals:

2: the device comprises a positioning piece, a wheel hub 3, a movable piece 4, an embedding ring 5, a second sleeving ring 6, a first limiting ring 7, an abutting ring 8, a guide groove 9, a circular arc inclined surface 10, an inserting ring 11, a first sleeving ring 12, a fastening piece 13, a supporting frame 14, a gasket 15, a through hole 16 and a scale accommodating space 17.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.

Referring to fig. 5a to 5d, the positioning element 2 is a hollow circular truncated cone frame with an opening in the middle, an inner ring of the positioning element 2 is axially protruded to form an insertion ring 11, an outer ring of the positioning element 2 is axially protruded to form a first sleeve ring 12, and the width of the insertion ring 11 is greater than the width of the first sleeve ring 12.

In one embodiment of the present invention, the inserting ring 11 is a circular ring structure with a consistent diameter, and the first engaging ring 12 is a circular truncated cone structure with a larger diameter outside and a smaller diameter inside.

The invention relates to a pulley capable of adjusting groove width and resisting dirt, which is fixed on a fastener 13 (such as a bolt) for conveying a belt-shaped object, such as a zipper, please refer to fig. 1-2, the pulley comprises a positioning piece 2, a hub 3 and a movable piece 4, in this embodiment, in order to keep the smooth operation of the pulley, the positioning piece 2, the hub 3 and the movable piece 4 are hollow circular frames, wherein the positioning piece 2 is a hollow circular platform frame with a hole in the middle, the fastener 13 passes through the central hole of the positioning piece 2 to fix the pulley on a support frame 14, the outer edge of the fastener 13 is provided with threads, the threads of the fastener 13 can be connected with the threads on the support frame 14 for supporting the pulley into a whole, so that the positioning piece 2 can be positioned on the support frame 14, and a user can easily assemble the positioning piece 2 on the support frame 14 through a threaded connection manner, or the positioning member 2 is detached from the support frame 14.

Referring to fig. 3a-3d, the hub 3 is a hollow cylindrical frame with a hole in the middle, the inner ring of the hub 3 is protruded axially to form an engaging ring 5, the hub 3 is inserted into the positioning member 2 through the engaging ring 5, the engaging ring 5 is matched with an inserting ring 11 with an outer diameter slightly smaller than the engaging ring 5 to form a bearing assembly of the pulley, the outer ring of the hub 3 is protruded axially and reversely to form a second engaging ring 6, and one end of the outer ring of the hub 3 is protruded radially and outwardly to form a first limiting ring 7.

Referring to fig. 4a-4d, the movable member 4 is a hollow circular frame, one end of the movable member 4 is provided with a contact ring 8 protruding outward in a radial direction, the movable member 4 is movably sleeved on the second contact ring 6, a guide groove 9 is formed between the contact ring 8 and the first limiting ring 7, and the movable member 4 can move horizontally along the second contact ring 6 to adjust the width of the guide groove 9.

In the present invention, one side of the guide groove 9 is integral with the hub 3, i.e., the first stopper ring 7 (stationary side), and the other side is movable in parallel in the axial direction with respect to the stationary side, i.e., the abutment ring 8 (movable side). In order to ensure that the movable edges can move in parallel, the movable part is designed into a circular ring structure.

Because the positioning member 2, the hub 3 and the movable member 4 are made of plastic and are light and thin, they have elasticity, and can generate a proper amount of deformation when pressed, and recover the original shape after pressed contact. Under the condition of normal use, the movable piece 4 can be firmly sleeved on the hub 3, and the movable piece can not be separated from the hub 3 carelessly in the use process.

Referring to fig. 1-2, in one embodiment of the present invention, the movable member 4 is an interference fit with the second sleeve ring 6.

Referring to fig. 1-2, in one embodiment of the present invention, a through hole 16 is formed in the center of the other end of the movable member 4. In order to prevent the other end of the moving part 4 from deforming, the center of the other end of the moving part 4 is opened to form a semi-closed end, and then a through hole 16 matched with a fixing fastener is reserved in the center of the semi-closed end for conveniently screwing the fixing part 13.

Referring to fig. 3a to 3d and 4a to 4d, the engaging ring 5, the inserting ring 11 and the second engaging ring 6 are circular rings with substantially the same caliber, and the engaging ring 5, the inserting ring 11 and the second engaging ring 6 are circular ring structures with the same caliber, which is convenient for processing.

As shown in fig. 3a-3d, 4a-4d, the width of the first nesting ring 12 is less than the width of the nesting ring 5, and the width of the nesting ring 5 is less than the width of the splicing ring 11. The fitting ring 5 is fitted with a socket ring 11 having an outer diameter slightly smaller than that of the fitting ring 5 to form a bearing assembly of the pulley. In order to further ensure the rotational fluency of the hub 3, the width of the engaging ring 5 is set to be smaller than the width of the first engaging ring 12, so as to prevent the engaging ring 5 from contacting the bottom of the positioning member 3 and generating sliding friction with the bottom after the positioning member 2 is engaged with the hub 3, thereby affecting the rotational fluency of the hub 3.

Referring to fig. 6, an arc inclined plane 10 is formed on the outer circumferential surface of the second engaging ring 6 to easily engage the movable member 4 with the second engaging ring 6, and in use, in order to facilitate the movable member 4 to be quickly engaged with the second engaging ring 6 of the hub 3, the outer edge of the second engaging ring 6 is set to be the arc inclined plane 10, so that the outer diameter of the outer edge of the second engaging ring 6 is smaller than the inner diameter of the abutting ring 8 of the movable member 4, and since the outer diameter of the outer edge of the second engaging ring 6 is smaller than the inner diameter of the abutting ring 8, a user can engage the movable member 4 with the second engaging ring 6 with only a small component force, and then the movable member 4 can be moved to a desired position by applying a small component force.

Referring to fig. 5a-5d, the inner ring of the positioning element 2 is axially protruded to form an insertion ring 11 inserted into the engagement ring 5 and extending out of a portion of the back of the hub 3, the outer ring of the positioning element 2 is axially protruded to form a first engagement ring 12 sleeved outside the engagement ring 5, the insertion ring 11 is a ring with a consistent caliber, the width of the insertion ring 11 is greater than the width of the engagement ring 5, in order to ensure the smooth rotation of the hub 3 and prevent the external fastening element from contacting the hub 3 and affecting the smooth rotation of the hub 3, the width of the insertion ring 11 is set to be greater than the width of the engagement ring 5, so that the external fastening element is only fixed to the positioning element, and the hub 3 rotates around the positioning element 2, thereby avoiding the problem that the smooth rotation is affected by the direct fixation with the external fastening element.

Referring to fig. 1-2 and 5a-5d, a fouling space is formed between the second sleeve ring 6 and the first sleeve ring 12. The first sleeving ring 12 is a circular truncated cone structure with a large caliber outside and a small inside, in order to prevent the pulley from being affected by dust accumulated in the use process, the first sleeving ring is arranged in a circular truncated cone structure shape, a certain distance is arranged between the second sleeving ring 6 and the first sleeving ring 12 to form a dirt accommodating space 17 capable of storing dirt and dirt, in the use process, before the dirt accommodating space 17 is not filled with dirt, the rotation of the pulley is not affected by the dirt, the maintenance period is greatly prolonged, and the reliability is improved. In the case that the dirt containing space 17 has a small amount of dirt, the small amount of dirt can fall along the outer edge of the first sleeve ring 12, and the problem that the pulley cannot continue to rotate due to the influence of the dirt is solved.

As shown in fig. 5a and 5d, the distance between the plugging ring 11 and the first nesting ring 12 is much larger than the thickness of the tabling ring 5. In order to ensure the rotational fluency of the hub 3, the distance between the inserting ring 11 of the positioning element 2 and the first engaging ring 12 is set to be larger than the thickness of the engaging ring 5, so that the engaging ring 5 of the hub 3 does not rub against the first engaging ring 12 when rotating, and the rotational fluency of the engaging ring 5 is further affected.

Referring to fig. 3a to 3d and 5a to 5d, the inner diameter of the snap ring 5 is equal to the outer diameter of the insert ring 11. In order to ensure that the engaging ring 5 does not shake when rotating, the outer diameter of the inserting ring 11 is set to be equal to the inner diameter of the engaging ring 5, so that there is no displacement difference between the engaging ring 5 and the inserting ring 11 when rotating, that is, the engaging ring can stably rotate around the inserting ring 11 without eccentric rotation.

Referring to fig. 4a and 4d, the inner diameter of the movable member 4 is equal to the outer diameter of the second engaging ring 6, and the width of the movable member 4 is smaller than the width of the second engaging ring 6. In order for the mobile element 4 to be stably fitted on the hub 3 without being easily displaced, the internal diameter of the mobile element 4 must be equal to the external diameter of the second coupling ring 6.

In the invention, the positioning piece, the hub and the moving piece are all nylon wheels, and the self-lubricating property among nylon is utilized, and the nylon wheel rolling shaft is used for replacing the traditional bearing, so that the cost is reduced, and the smoothness of rotation is improved.

The invention aims to protect a pulley capable of adjusting groove width and resisting dirt, and the pulley is designed into a pulley with adjustable groove width through a positioning piece, a hub and a movable piece, so that the pulley can adapt to the transmission of belts with different width sizes; the second sleeve ring and the first sleeve ring form a scale receiving space, the first sleeve ring is designed into a round table structure with a caliber large outside and a caliber small inside, and the problem that the scale receiving space is not influenced by rotation of the pulley due to sliding of dust along the round table structure after long-time use is avoided. Compared with the roller bearing in the prior art, the positioning piece, the hub and the moving piece are all nylon wheels, the cost is reduced by utilizing self-lubrication among the nylon wheels, the rotation smoothness is improved, and the design of the pulley ensures that the hub can always smoothly rotate around the positioning piece.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. A pulley capable of adjusting groove width and resisting dirt is fixed on a fastener, and is characterized by comprising:

the positioning piece is a hollow circular truncated cone frame with a hole in the middle, an inner ring of the positioning piece is axially arranged in a protruding mode to form an inserting ring, an outer ring of the positioning piece is axially arranged in a protruding mode to form a first sleeving ring, and the width of the inserting ring is larger than that of the first sleeving ring;

2. The pulley according to claim 1, wherein the insert ring is a circular ring structure with a uniform diameter, and the first sleeve ring is a circular truncated cone structure with a larger diameter outside and a smaller diameter inside.

3. The pulley according to claim 2, wherein the movable member is an interference fit with the second sleeve ring.

4. The pulley according to claim 2, wherein the other end of the movable member is centrally provided with a through hole.

5. The pulley according to claim 2, wherein the engaging ring, the inserting ring and the second engaging ring are of substantially uniform diameter circular ring structure.

6. The pulley according to claim 2, wherein the width of the first nesting ring is less than the width of the nesting ring, which is less than the width of the insertion ring.

7. The pulley according to claim 2, wherein a scale receiving space is formed between the second sleeve ring and the first sleeve ring.

8. The pulley according to any one of claims 2 to 7, wherein the outer diameter of the insert ring is equal to or slightly smaller than the inner diameter of the insert ring, and a predetermined gap is formed between the insert ring and the first sleeve ring after the insert ring is inserted into the hub.

9. The pulley according to any one of claims 2-7, wherein the positioning member, the hub, and the movable member are nylon wheels.