CN215293322U - Toothed chain type coupling structure - Google Patents

Abstract

The utility model relates to the field of protective film production equipment, and discloses a toothed chain type coupling structure, which comprises chain wheels respectively arranged at two shaft ends, wherein the two chain wheels are respectively and fixedly connected with the shaft ends in a coaxial manner; the two chain wheels are coaxially butted, a chain is sleeved on the peripheries of the two chain wheels, grooves are formed in the positions of the chains opposite to the teeth of the two chain wheels, and the teeth of the two chain wheels extend into the grooves of the chains; the chain comprises a plurality of chain links which are connected end to form a ring, one end of each chain link in the length direction is provided with a clamping head, the other end of each chain link is provided with a clamping groove, the clamping heads and the clamping grooves are respectively provided with a matched pin hole, and an expansion pin is inserted into the pin hole. The utility model discloses utilize public chain, simultaneously with the same sprocket meshing side by side of two tooth numbers, only need when needing to pull down pull out arbitrary one expansion round pin can, easy dismounting has avoidd the problem that the tradition adopted the ring flange butt joint to need to use a plurality of bolt fastening dismouting complicacies, has also avoidd the problem that ageing messenger's ring flange was not hard up easily when using the rubber gasket.

Description

Toothed chain type coupling structure

Technical Field

The utility model relates to a protection film production facility field, concretely relates to chain gear coupling structure.

Background

In the protection film production and processing process, the output shaft coupling of shaft coupling and motor or reduction gear need be passed through to equipment such as agitator, commentaries on classics roller that use, and traditional coupling mode utilizes the ring flange butt joint, and the ring direction sets up a plurality of screws on the ring flange, and it is fixed to penetrate to carry out the coupling behind the bolt.

Rubber gaskets are required to be added between the flanges in the use process of the flange plate coupling, so that bolts are ensured to be screwed tightly; but raw materials melting stirring, protection film blowing process all need high temperature in the protection film production process, can lead to the rubber gasket to age fast when the temperature is too high, lead to the ring flange to connect easily not hard up. And the shaft coupling mode of disassembly and assembly needs to screw a plurality of bolts, so that the operation is complex.

SUMMERY OF THE UTILITY MODEL

Based on above problem, the utility model provides a chain wheel coupling structure utilizes public chain, simultaneously with the same sprocket meshing side by side of two tooth numbers, only need when needing to pull down pull out arbitrary one expansion pin can, easy dismounting has avoidd the problem that the tradition adopted the ring flange butt joint to need to use the complicated dismouting of a plurality of bolt fastening, has also avoidd the problem that ageing messenger's ring flange was not hard up easily when using rubber gasket.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a chain type shaft coupling structure comprises chain wheels which are respectively arranged at two shaft ends, the number of teeth, the root circle and the addendum circle of the two chain wheels are the same, and the two chain wheels are respectively and fixedly connected with the shaft ends in a coaxial manner; the two chain wheels are coaxially butted, a chain is sleeved on the peripheries of the two chain wheels, grooves are formed in the positions of the chains opposite to the teeth of the two chain wheels, and the teeth of the two chain wheels extend into the grooves of the chains; the chain comprises a plurality of chain links which are connected end to form a ring, one end of each chain link in the length direction is provided with a clamping head, the other end of each chain link is provided with a clamping groove, the clamping heads and the clamping grooves are respectively provided with a matched pin hole, and an expansion pin is inserted into the pin hole.

Furthermore, the expansion pin is made of elastic metal materials, the expansion pin is of a hollow structure cylinder structure, one end of the expansion pin is sealed, the other end of the expansion pin is coaxially provided with a threaded hole and a smooth unthreaded hole of the inner wall, an adjusting bolt is installed in the threaded hole, a dowel bar with one end capable of stretching into a cavity of the expansion pin is arranged in the unthreaded hole, the dowel bar and the adjusting bolt are coaxially and integrally formed, and hydraulic oil is filled in the hollow structure of the expansion pin.

Furthermore, an annular groove is formed in the side wall of the middle of the unthreaded hole, and an annular sealing ring is installed in the annular groove.

Furthermore, the groove on the chain is a through groove with the same thickness as the chain.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses utilize public chain, simultaneously with the same sprocket meshing side by side of two tooth numbers, only need when needing to pull down pull out arbitrary one expansion round pin can, easy dismounting has avoidd the problem that the tradition adopted the ring flange butt joint to need to use a plurality of bolt fastening dismouting complicacies, has also avoidd the problem that ageing messenger's ring flange was not hard up easily when using the rubber gasket.

Drawings

FIG. 1 is a schematic structural view of a toothed chain coupling structure in an embodiment;

FIG. 2 is a schematic perspective view of a link and an expansion pin according to an embodiment;

FIG. 3 is a schematic structural view of an expansion pin in the embodiment;

FIG. 4 is a schematic structural view of an adjusting bolt and a polish rod in the embodiment;

FIG. 5 is a schematic view of the connection of the sprocket to the shaft end in the embodiment;

wherein: 1. a shaft end; 2. a sprocket; 3. a chain; 4. a chain link; 5. clamping a head; 6. a card slot; 7. a pin hole; 8. an expansion pin; 9. a bolt; 10. a dowel bar; 11. hydraulic oil; 12. a through groove; 13. an annular seal ring.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.

Example (b):

referring to fig. 1-5, a toothed chain type shaft coupling structure comprises chain wheels 2 respectively arranged at two shaft ends 1, wherein the number of teeth, the root circle and the addendum circle of the two chain wheels 2 are the same, and the two chain wheels 2 are respectively coaxially and fixedly connected with the shaft ends 1; the two chain wheels 2 are coaxially butted, the periphery of each chain wheel 2 is sleeved with a chain 3, a groove is formed in the position of each chain 3 opposite to the tooth connected with each chain wheel 2, and the teeth of the two chain wheels 2 extend into the grooves of the chains 3; the chain 3 comprises a plurality of chain links 4 which are connected end to form a ring shape, one end of each chain link 4 in the length direction is provided with a clamping head 5, the other end of each chain link is provided with a clamping groove 6, the clamping heads 5 and the clamping grooves 6 are respectively provided with a pin hole 7 matched with each other, and an expansion pin 8 is inserted into the pin hole 7.

In the embodiment, the chain wheel 2 and the shaft can be connected in a welding mode, or the chain wheel 2 and the shaft can be integrally formed; when two shafts need to be coaxially connected, the clamping heads 5 and the clamping grooves 6 of the chain links 4 are firstly utilized to connect the chain links 4 end to end into a chain shape, and the insertion joints of the clamping heads 5 and the clamping grooves 6 are inserted into the pin holes 7 by adopting expansion pins 8; because of two sprocket 2 coaxial fixation respectively need be connected axle head 1, with two sprocket 2 coaxial conflict butt joints, then sheathe the chain 3 that a plurality of chain links 4 formed in 2 peripheries of sprocket, fix into the chain ring through expansion pin 8 with dop 5 and the draw-in groove 6 of the head and the tail of chain 3 again, realize the centering of two axles and connect. The embodiment utilizes the public chain 3, simultaneously with the meshing of two parallel chain wheels 2 that the number of teeth is the same, only need pull out when needing to pull down arbitrary one expansion pin 8 can, easy dismounting, avoided the tradition adopt the ring flange butt joint need use the problem that the fixed dismouting of a plurality of bolts 9 is complicated, also avoided the problem that ageing messenger's ring flange was not hard up easily when using the rubber gasket.

In this embodiment, the expansion pin 8 is made of an elastic metal material, the expansion pin 8 is a hollow cylindrical structure, one end of the expansion pin 8 is sealed, the other end of the expansion pin is coaxially provided with a threaded hole and an unthreaded hole with a smooth inner wall, an adjusting bolt 9 is installed in the threaded hole, a dowel bar 10 with one end capable of extending into the cavity of the expansion pin 8 is arranged in the unthreaded hole, the dowel bar 10 and the adjusting bolt 9 are coaxially and integrally formed, and the hollow structure of the expansion pin 8 is filled with hydraulic oil 11. The expansion pin 8 is generally of a thin-wall hollow cylinder structure, the outer diameter of the cylinder structure is equal to the diameter of the pin hole 7, and the extension amount of the dowel bar 10 in the hollow structure is adjusted by screwing the adjusting bolt 9, so that the pressure of hydraulic oil 11 in the hollow structure is adjusted; when the clamping head 5 and the clamping head 6 need to be fixed through the expansion pin 8, the adjusting bolt 9 is screwed to enable the dowel bar 10 to extend into the hollow structure, hydraulic oil 11 pressurizes the cylinder wall, and the cylinder wall expands to tightly abut against the inner walls of the pin holes 7 of the clamping head 5 and the clamping head 6, so that the clamping head 5 and the clamping head 6 are fixed; when the chain link 4 needs to be disassembled, the bolt 9 only needs to be unscrewed to release the pressure of the hydraulic oil 11, and the cylinder wall shrinks, so that the chain link 4 can be disassembled.

The groove on the chain 3 is the through groove 12 with the same thickness as the chain 3, and the teeth of different sizes can be met and stretched into the through groove 12, so that the chain links 4 or the chain 3 are guaranteed to be applied to the periphery of the chain wheels 2 of different sizes to be sleeved.

The annular groove is formed in the side wall of the middle of the unthreaded hole, the annular sealing ring 13 is installed in the annular groove, the sealing performance between the dowel bar 10 and the inner wall of the unthreaded hole can be guaranteed, hydraulic oil 11 is prevented from leaking, the inner wall of the pinhole 7 can be tightly abutted in the using process of the expansion pin 8, and the phenomenon of chain dropping is not prone to occurring.

The embodiment of the present invention is the above. The specific parameters in the above embodiments and examples are only for the purpose of clearly showing the verification process of the present invention, and are not used to limit the protection scope of the present invention, which is still subject to the claims, and all the equivalent structural changes made by using the contents of the specification and drawings of the present invention should be included in the protection scope of the present invention.

Claims (4)

1. The utility model provides a toothed chain coupling structure which characterized in that: the chain wheel structure comprises chain wheels (2) which are respectively arranged at two shaft ends (1), the number of teeth, the root circle and the addendum circle of the two chain wheels (2) are the same, and the two chain wheels (2) are respectively and fixedly connected with the shaft ends (1) in a coaxial manner; the two chain wheels (2) are coaxially butted, chains (3) are sleeved on the peripheries of the two chain wheels (2), grooves are formed in the positions, opposite to the teeth of the chain wheel (2), of the chains (3), and the teeth of the two chain wheels (2) extend into the grooves of the chains (3); chain (3) are connected into annular chain link (4) by a plurality of end to end and constitute, every chain link (4) are provided with dop (5) along length direction one end, and the other end is provided with draw-in groove (6), all be provided with assorted pinhole (7) on dop (5) and draw-in groove (6), pinhole (7) interpolation is equipped with expansion pin (8).

2. The toothed chain coupling structure according to claim 1, wherein: the expansion pin (8) is made of elastic metal materials, the expansion pin (8) is of a hollow-structure cylindrical structure, one end of the expansion pin (8) is sealed, the other end of the expansion pin is coaxially provided with a threaded hole and a smooth unthreaded hole of the inner wall, an adjusting bolt (9) is installed in the threaded hole, a dowel bar (10) with one end capable of extending into the cavity of the expansion pin (8) is arranged in the unthreaded hole, the dowel bar (10) and the adjusting bolt (9) are coaxially formed in an integrated mode, and hydraulic oil (11) is filled in the hollow structure of the expansion pin (8).

3. The toothed chain coupling structure according to claim 2, wherein: an annular groove is formed in the side wall of the middle of the unthreaded hole, and an annular sealing ring (13) is installed in the annular groove.

4. The toothed chain coupling structure according to any one of claims 1 to 3, wherein: the groove on the chain (3) is a through groove (12) with the same thickness as the chain (3).

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