CN217029865U

CN217029865U - Belt wheel mechanism

Info

Publication number: CN217029865U
Application number: CN202220309992.6U
Authority: CN
Inventors: 林才华
Original assignee: Fujian Yinghang Technology Co ltd
Current assignee: Fujian Yinghang Technology Co ltd
Priority date: 2022-02-16
Filing date: 2022-02-16
Publication date: 2022-07-22
Anticipated expiration: 2032-02-16

Abstract

The utility model relates to transmission equipment and discloses a belt pulley mechanism which comprises a belt pulley body (1) and a belt pulley inner core (2), wherein the belt pulley body (1) is connected with the belt pulley inner core (2) through a connecting unit; the connecting unit comprises a clamping block (3) arranged on the belt wheel body (1) and a clamping groove (4) which is arranged on the belt wheel inner core (2) and matched with the clamping block (3), or comprises a clamping groove (4) arranged on the belt wheel body (1) and a clamping block (3) which is arranged on the belt wheel inner core (2) and matched with the clamping groove (4). The belt wheel body and the belt wheel inner core are connected through the matching of the clamping block and the clamping groove, so that the belt wheel is convenient to install, firm in connection, not easy to fall off, free of frequent maintenance and convenient to disassemble and replace.

Description

Belt wheel mechanism

Technical Field

The utility model relates to transmission equipment, in particular to a belt pulley mechanism.

Background

At present, the utility model is named as a belt wheel component used on a take-up and pay-off machine, and the utility model patent application with the publication number of CN103603942A is characterized in that a belt wheel body is provided with a concave belt wheel groove on the outer surface of the belt wheel body, a belt wheel inner sleeve is arranged in the belt wheel body, the belt wheel inner sleeve is fixedly connected with a belt wheel main body through a screw, and the belt wheel body and the belt wheel inner sleeve are of a split structure and can be separately manufactured in the production process, the belt wheel body can be replaced, and the material cost is saved; however, a screw locking structure is adopted between the belt pulley body and the belt pulley inner sleeve, after a period of time, screws for locking the belt pulley body and the belt pulley inner sleeve are easy to loosen, frequent maintenance is needed, and the screws need to be locked again one by one during maintenance, which wastes time and labor; in addition, the screw is adopted for locking, the screw holes between the belt pulley inner sleeve and the belt pulley main body are not aligned well, and the installation is inconvenient.

Disclosure of Invention

The utility model provides a belt pulley mechanism aiming at the defects that in the prior art, frequent maintenance is needed by adopting a screw locking mode, the maintenance needs to be carried out one by one and re-locking is needed, screw holes are not well aligned during installation, and time is consumed.

In order to solve the technical problems, the utility model is solved by the following technical scheme:

the belt wheel mechanism comprises a belt wheel body and a belt wheel inner core, and the belt wheel body is connected with the belt wheel inner core through a connecting unit; the connecting unit is including setting up the fixture block on the band pulley body and setting on the band pulley inner core with fixture block complex draw-in groove, or including setting up the draw-in groove on the band pulley body and setting on the band pulley inner core with draw-in groove complex fixture block. After the clamping block one end and the clamping groove one end are aligned on the circumferential surface of the belt pulley body, the clamping block is embedded into the clamping groove by rotating the belt pulley body or the belt pulley inner core, so that the connection between the belt pulley body and the belt pulley inner core can be realized, and the clamping block is convenient and quick to assemble and disassemble.

Further, the width of the fixture block is gradually increased, and the width of the corresponding fixture groove is also gradually increased. The clamping blocks are wedge-shaped, can be tightened more and more in the rotating process of the belt pulley, are not easy to fall off, and play a role in strengthening fastening.

Furthermore, a bolt is additionally arranged between the clamping groove and the clamping block for locking. The belt wheel body and the belt wheel inner core are locked through the bolts, and the function of strengthening fastening is achieved.

Furthermore, a through hole is formed in the belt wheel inner core, a screw hole is formed in the belt wheel inner core and located in the through hole in the radial direction of the belt wheel inner core, the screw hole penetrates out of the bottom wall of the clamping groove, a screw hole is formed in the clamping block and corresponds to the clamping groove, and the bolt is matched and locked with the screw hole. The through holes are arranged, so that the bolts are hidden, and troubles (for example, the bolts exposed outside are easy to hook the outside objects) are reduced. When the screw holes are aligned, only one end of the clamping groove is aligned with the corresponding end of the clamping block, and then the two screw holes can be aligned.

Furthermore, the surface of the inner ring of the fixture block is an arc-shaped surface, and the bottom wall of the corresponding clamping groove matched with the surface of the inner ring of the fixture block is an arc-shaped surface. The clamping block can be conveniently embedded into the clamping groove.

Further, the outer ring of the belt wheel body is provided with a belt wheel groove, and a positioning boss is arranged in the belt wheel groove. Increase the area of contact between belt and the pulley groove, the belt is easy to skid or twist reverse when avoiding the band pulley body rotation.

Furthermore, the cross section of the positioning boss is triangular or isosceles trapezoid-like with arc top edges. Increasing the contact area between the belt and the pulley body.

Further, the positioning boss is of an annular structure. The fit is convenient.

Furthermore, the locating bosses are at least two and are arranged on the circumferential surface of the belt wheel body side by side at intervals.

Due to the adoption of the technical scheme, the utility model has the remarkable technical effects that:

the belt wheel body and the belt wheel inner core are connected through the clamping block and the clamping groove in a matched mode, the installation is convenient, the connection is firm, the belt wheel body is not prone to falling off, frequent maintenance is not needed, the belt wheel is convenient to disassemble and replace, after the belt wheel groove is abraded, the clamping block is only required to be separated from the clamping groove, the belt wheel inner core can be disassembled, and the belt wheel body is convenient to replace. In order to improve the linking fastness between band pulley body and the band pulley inner core, the width crescent of fixture block can get more and more tight with the draw-in groove cooperation at rotatory in-process fixture block. Or bolts are added for locking, so that the matching firmness is improved. The belt pulley groove is provided with the positioning boss, so that the contact area between the belt pulley groove and the belt is increased, and the condition that the belt slips or twists is reduced.

Drawings

FIG. 1 is a block diagram of the present invention;

FIG. 2 is a block diagram of the pulley body of the present invention;

fig. 3 is a block diagram of the pulley core of the present invention.

The names of the parts designated by the numerical references in the drawings are as follows: the belt wheel comprises a belt wheel body 1, a belt wheel inner core 2, a clamping block 3, a clamping groove 4, a clamping jaw 5, a belt wheel groove 6, an inclined plane 7, a narrow end 8, a wide opening 9, an arc-shaped surface 10, a positioning boss 11, a screw hole 12, a through hole 13, a belt 14 and a positioning groove 15.

Detailed Description

The utility model is further described with reference to the following figures and examples.

Example 1

The belt wheel mechanism, as shown in fig. 1-3, comprises a belt wheel body 1 and a belt wheel inner core 2 in a split structure, wherein the belt wheel body 1 is connected with the belt wheel inner core 2 through at least one connecting unit.

The connecting unit comprises a clamping block 3 which is arranged on the inner ring of the belt wheel body 1 and protrudes out of the inner ring, and a clamping groove 4 which is arranged on a clamping jaw 5 of the belt wheel inner core 2 and is matched with the clamping block 3. The clamping groove 4 is a groove formed by inwards recessing the middle part of the clamping jaw 5 of the belt wheel inner core 2 along the axial surface and extending along the outer diameter of the belt wheel inner core 2. The length direction of the clamping block 3 is consistent with the inner diameter direction of the belt wheel body 1. A certain space is formed between the connecting units, so that one end of the fixture block 3 can be aligned with the inlet end of the corresponding clamping groove 4 on the circumferential surface of the belt wheel body 1, and the fixture block 3 can be inserted into the clamping groove 4.

In this embodiment, the number of the connecting units is the same as the number of the claws 5 on the pulley core 2, that is, each claw 5 has a connecting unit thereon to be engaged with the pulley body 1. In this embodiment, there are three claws 5 on the pulley core 2, and there are three connecting units.

The outer ring of the belt wheel body 1 is provided with a concave belt wheel groove 6, and a belt 14 is embedded and matched with the concave belt wheel groove.

Example 2

As shown in fig. 2 and 3, in addition to the above embodiment 1, the width of the latch 3 is gradually increased, that is, both side surfaces of the latch 3 in the longitudinal direction are the inclined surfaces 7, and the inclined directions of the inclined surfaces 7 are relatively inclined. The width of the corresponding slot 4 is gradually increased, that is, the two inner side walls of the corresponding slot 4 are also inclined planes 7 matched with the two side surfaces of the slot 4. When the belt pulley inner core 2 is installed, the narrow end 8 of the fixture block 3 is aligned with the wide opening 9 of the clamping groove 4, then the belt pulley inner core 2 is rotated, and the fixture block 3 can be installed after entering the clamping groove 4.

The direction of rotation of band pulley body 1 at the during operation is unanimous with the direction of 3 width crescent of fixture block, therefore the connection relation between fixture block 3 and draw-in groove 4 can be more and more inseparable when band pulley body 1 is rotatory, is difficult for droing.

Example 3

As shown in fig. 2-3, on the basis of the above embodiment 1, in order to further reduce the risk that the pulley core 2 is separated from the pulley body 1, a bolt is additionally installed between the locking groove 4 and the fixture block 3 for locking.

In this embodiment, in order not to affect the operation of the pulley mechanism and avoid some unnecessary troubles, a through hole 13 penetrating through the axial direction of the jaw 5 is provided on the jaw 5, a screw hole 12 arranged along the radial direction of the pulley inner core 2 is provided in the through hole 13 on the jaw 5, the screw hole 12 extends to the bottom wall of the clamping groove 4 and penetrates out of the bottom wall of the clamping groove 4, and a screw hole 12 is provided on the clamping block 3 corresponding to the clamping groove 4.

During installation, after the clamping block 3 is introduced into the clamping groove 4, the bolt is inserted from the through hole 13 to lock the belt pulley body 1 and the belt pulley inner core 2, and the separation of the belt pulley body and the belt pulley inner core can be avoided.

In order to facilitate the alignment of the screw hole 12 on the fixture block 3 and the screw hole 12 on the clamping groove 4 during the installation, the length of the fixture block 3 can be designed to be the same as that of the clamping groove 4, when one end of the clamping groove 4 is aligned with the corresponding end of the fixture block 3, the two corresponding screw holes 12 can be aligned, and the bolt can be inserted into the two screw holes 12 for locking.

Example 4

As shown in fig. 2 and 3, on the basis of the above embodiment 2, a bolt structure is further installed between the slot 4 and the latch 3 for locking. The structure was the same as in example 3.

Example 5

As shown in fig. 2 and 3, on the basis of the above embodiment 1, further, in order to facilitate the fixture block 3 to be able to be buckled into the clamping groove 4 when the pulley inner core 2 rotates or rotates along with the pulley body 1, the inner ring surface of the fixture block 3 is an arc-shaped surface 10, and correspondingly, the bottom wall surface of the clamping groove 4, which is matched with the inner ring surface of the fixture block 3, is also an arc-shaped surface 10.

Example 6

The basic structure of the belt pulley is the same as that of the embodiment 1, and the difference is that the connecting unit comprises a clamping groove 4 arranged on the inner ring of the belt pulley body 1 and a clamping block 3 arranged on the inner core 2 of the belt pulley and matched with the clamping groove 4.

Example 7

As shown in fig. 1 and 2, on the basis of the above embodiment 1, further, an outwardly protruding positioning boss 11 is provided in the pulley groove 6 of the pulley body 1, and the positioning boss 11 may be of an annular structure, that is, penetrates through the circumferential surface of the pulley body 1; the positioning bosses 11 can also be a plurality of ones and are arranged on the circumferential surface of the belt wheel body 1 at intervals side by side. In this embodiment, the positioning boss 11 is annular in shape in order to ensure that the belt 14 can be better bonded to the pulley body 1.

The cross section of the positioning boss 11 is triangular or isosceles trapezoid-like with an arc top edge. In this embodiment, the cross section of the positioning boss 11 is isosceles trapezoid, so as to increase the contact area between the belt wheel body 1 and the belt 14, thereby improving the stability of the rotation of the belt 14, and preventing twisting and slipping.

The positioning boss 11 may be a part of the pulley body 1 extending outward, or may be a separate structure fixed in the pulley groove 6 by welding. In the present embodiment, to reduce the number of steps, the positioning boss 11 is a portion of the pulley body 1 that extends outward.

The lower part of the belt 14 is provided with a positioning groove 15 matched with the positioning boss 11.

In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made in the claims of the present invention should be covered by the claims of the present invention.

Claims

1. The belt wheel mechanism comprises a belt wheel body (1) and a belt wheel inner core (2), and is characterized in that the belt wheel body (1) is connected with the belt wheel inner core (2) through a connecting unit; the connecting unit comprises a clamping block (3) arranged on the belt wheel body (1) and a clamping groove (4) which is arranged on the belt wheel inner core (2) and matched with the clamping block (3), or comprises a clamping groove (4) arranged on the belt wheel body (1) and a clamping block (3) which is arranged on the belt wheel inner core (2) and matched with the clamping groove (4).

2. A pulley mechanism according to claim 1, characterized in that the width of the cartridges (3) increases gradually, as does the width of the corresponding slots (4).

3. The pulley mechanism according to claim 1 or 2, characterized in that a bolt is additionally arranged between the clamping groove (4) and the clamping block (3) for locking.

4. The pulley mechanism according to claim 3, wherein the pulley inner core (2) is provided with a through hole (13), the pulley inner core (2) is provided with a screw hole (12) in the through hole (13) along the radial direction of the pulley inner core (2), the screw hole (12) penetrates through the bottom wall of the clamping groove (4), the clamping block (3) is provided with a screw hole (12) at a position corresponding to the clamping groove (4), and the bolt is matched and locked with the screw hole (12).

5. A pulley mechanism according to claim 1 or 2, characterized in that the inner circumferential surface of the clamping block (3) is an arc-shaped surface (10), and the bottom wall of the corresponding clamping groove (4) which is matched with the inner circumferential surface of the clamping block (3) is an arc-shaped surface (10).

6. A pulley mechanism according to claim 1 or 2, characterized in that the pulley body (1) is provided with a pulley groove (6) on the outer circumference, and a positioning boss (11) is provided in the pulley groove (6).

7. A pulley mechanism according to claim 6, characterised in that the cross-section of the locating boss (11) is triangular or isosceles trapezium or isosceles trapezoid-like with a curved top edge.

8. A pulley mechanism according to claim 6, characterized in that the positioning boss (11) is of annular configuration.

9. A pulley mechanism according to claim 6, characterized in that the number of locating projections (11) is at least two, spaced side by side on the circumference of the pulley body (1).