KR101299870B1 - A coupling device equipped with the moving roller - Google Patents

Abstract

PURPOSE: A coupling device using a movable roller is provided to improve durability on a heavy load, and smoothly transmit power, and efficiently prevent components from being damaged due to the load. CONSTITUTION: A coupling device (100) using a movable roller comprises a pair of hub flanges (30,31), a pair of fixing covers (20,21), a plurality of fixing grooves (22,32), and a plurality of movable rollers (40,41). A pair of the hub flanges includes penetration holes (34,35) so that different rotary shafts are connected on both sides in a horizontal state. A pair of the fixing covers stably connects the hub flanges on both sides by being individually connected to the outside of the hub flanges and includes penetration holes (20a,21a) in the inner center. A plurality of the fixing grooves is formed on the inner circumference of sleeves (25,26) of the fixing covers and on the outer circumference of the one side of the hub flange. A plurality of the movable rollers is connected by being individually inserted into the fixing grooves on the upper side and the lower side.

Description

A coupling device equipped with the moving roller}

The present invention relates to a coupling device using a flow roller, and more particularly, a predetermined fixing groove is provided on the outer periphery of both side hub flanges connected to each other and the inner periphery of the fixing cover for coupling the hub flange. The present invention relates to a coupling device using a flow roller which is installed to fit a flow roller in a fixing groove to prevent the abrasion and breakage of the connection parts of both hub flanges and the impact caused by an external impact.

In general, a coupling is a mechanical part that directly connects two shafts to transmit rotation or power, and is mainly driven by a drive shaft connected to a motor side that generates rotational power and a rotational force transmitted from the drive shaft to the drive unit. It is one of the power transmission device for connecting power at both ends of the driven shaft to transmit power from the drive shaft to the driven shaft.

These couplings have a variety of types to reduce the vibrations and shocks that may occur in the structure, material, usage, shaft joint structure, connection direction, allowable torque or rotational speed, and connecting parts interconnecting two axes. It is manufactured and used.

Coupling in the technical field to which the present invention belongs mainly relates to the field of metal coupling of rigid structure that transmits a large rotational power, one of the conventional metal coupling is mainly used for gear coupling, an embodiment thereof is shown in FIG. It is.

In the case of such a gear coupling 10, the external gear 5 is machined on the outer periphery of the two shaft ends on both sides, and the internal gear 6 is formed on the inner circumference of the flange joining the two shaft ends to form a flange on the drive shaft. In addition, the power transmission is made to the driven shaft, so that it is easy to transmit the powerful rotating force at high speed.

However, in the case of such a gear coupling 10, wear occurs on the contact surface of the internal gear 5 and the external gear 6 to which power is transmitted when the gear coupling 10 is used for a certain period of time, and the gear breaks when excessive force is transmitted. Or severe backlash occurred, which acted as a disadvantage in delivering smooth rotational force.

In addition, since a large number of gears must be processed, the production is difficult and the unit cost is increased, and precise machining of the gears is required, resulting in a lot of quality differences depending on the processing state of the gears.

As another example of a metal coupling, Korean Utility Model Model No. 20-377153 (name: grid coupling) is disclosed.

In the case of grid coupling, teeth are formed on the flange circumferential surface of the cylindrical hub to which each axis is coupled, and the two separate shafts are inserted by inserting an elastic grid of cycle waveform into the groove between the teeth so that each hub flange is connected. It is configured to connect, the cover is detachable to the outer side of the hub flanges coupled by the elastic grid is configured to secure both hubs.

The conventional grid coupling having such a structure also needs to form a plurality of teeth in the circumferential direction on the hub flange, so that the machining is difficult, the structure is complicated, the processing cost is increased, and maintenance after installation is difficult, and thus the use efficiency is inferior. there was.

Korea Utility Model Registration No. 20-377153 (Registration Date: February 18, 2005) Korean Laid-Open Patent Publication No. 10-2011-15450 (published: 2011.02.15)

The present invention has been made to solve the disadvantages of the conventional metal coupling as described above, the present invention is to simplify the structure of the hub flange coupled to both shafts to improve productivity, lower costs and convenient post-management It is an object of the present invention to provide a coupling device using a flow roller.

In particular, a flow roller is installed between the outer circumference of the hub flange coupled to both shafts and the inner circumference of the fixed cover facing the outer circumference of the hub flange to enable smooth power transmission while improving durability against strong loads. Another object of the present invention is to provide a coupling device using a flow roller that can effectively prevent the occurrence of component damage due to the load generated between both shafts or the coupling device in the event of a misalignment between the shafts.

In order to achieve the above object, a coupling device using a flow roller according to the present invention is a pair of hub flanges are coupled to the inner surface of the through-hole is formed so that different rotating shafts are coupled in a horizontal state on both sides ; A pair of fixing covers coupled to the pair of hub flanges outside to firmly couple both side hub flanges; The inner periphery of the hub flange fixed to the fixing cover and positioned on the inner side of the fixing cover, and the inner sleeve of the sleeve of the fixing cover facing the outer periphery of the hub flange, respectively, while maintaining a predetermined interval in the circumferential direction, A plurality of fixing grooves formed; And a plurality of flow rollers which are respectively fitted into the plurality of upper and lower fixing grooves to transfer the rotational force of the hub flange to which the rotating shaft is coupled.

In particular, the fixing groove formed on the outer periphery of the hub flange and the inner periphery of the fixing cover is made of an oval or rectangular shape having a long length in the installation direction of the rotation shaft compared to its width.

In addition, the flow roller coupled to the fixing groove is installed in the same shape as the shape of the fixing groove made of a long oval or rectangular shape in the installation direction of the rotary shaft, fixed to the outer periphery of the hub flange and the inner periphery of the fixing cover The flow roller is fitted into the groove is preferably made of a size slightly smaller than the size of the fixed groove so that it can be idle or flow in a predetermined range in the upper and lower fixed grooves in the case of an overload or shock transmitted from the rotating shaft.

The coupling device using the flow roller according to the present invention having the above-described configuration is simple in its internal structure to facilitate maintenance and improve the use efficiency.

In addition, the present invention is provided with a flow roller as a medium for performing power transmission between the hub flange and the fixed cover, so that the power transmission can be smoothly while minimizing the friction force generated at the connection portion, strong load and To provide a coupling device with improved durability that can withstand shocks sufficiently.

In addition, a predetermined play is maintained between the flow roller and the fixed groove so that the power transmission efficiency can be maintained even when a slight parallel error or an angular error and a torsional error occurs between two axes connected to both sides of the coupling device. In addition, it provides a useful effect to prevent component damage by preventing overload caused by errors.

1 is a partially cut perspective view of a conventional gear coupling;
2 is an exploded perspective view of a coupling device according to the present invention;
3 is a partial cut cross-sectional view of the coupling state of the coupling device according to the present invention;
Figure 4 is a vertical longitudinal cross-sectional view of the coupling state of the coupling device according to the present invention.

Coupling device using a flow roller according to the present invention is made of a configuration to simplify the structure of the hub flange to which both shafts are coupled to make the production is convenient to lower the manufacturing cost, more convenient after-care.

In particular, a flow roller is installed between the outer circumference of the hub flange to which both shafts are coupled and the inner circumference of the fixed cover facing the outer circumference of the hub flange, wherein the flow roller has a slight flow in the fixed groove formed up and down. It is configured to have a structure capable of smoothly transmitting power while improving the durability of the coupling device by preventing damage or abrasion between both hub flanges even when a strong load is applied to the coupling device.

In addition, in the event of a mismatch between the two axes due to vertical, horizontal, left and right errors and torsion between the two axes connected at both sides of the coupling device, the error is eliminated by the flow of the flow roller, and the component is unreasonable due to excessive load of the coupling device. It is configured to effectively prevent damage.

Hereinafter, the characteristic configuration and structure of the present invention will be described in more detail with reference to the accompanying drawings.

Figure 2 is an exploded perspective view of the entire configuration of the coupling device 100 according to the present invention, a different rotation axis, for example, each end of the drive motor shaft and the power transmission shaft through the inside to be coupled in a horizontal state on both sides (34,35) are formed, the pair of hub flanges (30,31) are coupled to each other and abut each inner side, and the pair of hub flanges (30,31) are respectively coupled to the outside of both hub flanges ( Basically, a pair of fixing covers 20 and 21 formed with through holes 20a and 21a in the inner central portion so as to firmly couple the 30 and 31 to each other.

In addition, one side outer periphery of the hub flanges 30 and 31 positioned on the inner surfaces of the fixing covers 20 and 21 and fixed by the fixing covers 20 and 21, and of the hub flanges 30 and 31, respectively. A plurality of fixing grooves formed to be recessed to a certain depth while maintaining a predetermined interval in the circumferential direction on each of the inner circumferential surfaces of the sleeves 25 and 26 of the fixing covers 20 and 21 facing the outer circumferences of the hub flanges 30 and 31 during the combination ( 22 and 32 are formed and the fixing grooves 32 and the fixing cover 20 formed in the hub flanges 30 and 31 when the hub flanges 30 and 31 are coupled to the inside of the fixing covers 20 and 21. A plurality of flow rollers are fitted to the inside of the upper and lower fixing grooves (22, 24, 32, 33) facing the mutually opposed fixing grooves (22, 24) formed on the inner peripheral surface of the sleeve (25, 26) of (21) ( 40, 41).

That is, the fixing covers 20 and 21 are formed with sleeves 25 and 26 which protrude a predetermined length to the left and right, and outer diameters larger than the sleeves 25 and 26 and a plurality of penetrating left and right in the installation direction of the rotation shaft. A fastening hole 23 is formed to have a shape with fastening parts 27 and 28 contacted to face each other.

In addition, the pair of hub flanges (30, 31) also has a similar shape to the fixed cover (20, 21) protrudes a predetermined length to the left and right and the sleeves 36 and 37 are provided with through holes 34 and 35, respectively And a constraining portion having an outer diameter larger than that of the sleeves 36 and 37 so as to be constrained to the inner sides of the sleeves 25 and 26 of the fixing covers 20 and 21 so as to be in surface contact with each other. 38, 39) is provided.

In addition, fixing grooves 22, 24, 32, and 33 formed on the outer circumference of the restraints 38 and 39 of the hub flanges 30 and 31 and the inner circumferences of the sleeves 25 and 26 of the fixing covers 20 and 21. ), The depth of each of the flow rollers (40, 41) corresponds to 1/2 of the height or somewhat less than half of the size is preferably made of a structure capable of wrapping the flow rollers (40, 41) at the same time In addition, the fixing grooves 32 and 33 formed on the outer circumference of the hub flanges 30 and 31 are preferably made of an oval or rectangular shape having a length longer than a depth in the longitudinal direction of the rotating shaft to be installed.

Of course, the flow rollers 40 and 41, which are fitted into the fixing grooves 32 and 33 of the hub flanges 30 and 31, respectively, are also provided in the installation direction of the rotating shaft in the same way as the shape of the fixing grooves 32 and 33. It is made of a long oval or rectangular shape, the length of the fixing grooves (32, 33) rather than the length of the flow roller (40, 41) is formed to have a predetermined free space, the upper and lower fixing grooves 22, The width of one fixed groove formed by the 24, 32, 33 is also formed somewhat larger than the outer diameter of the flow roller (40, 41) to be constrained, so that the flow roller (40, 41) is the upper and lower fixed grooves (22, 24, 32) More preferably, it is made of a structure that can flow within a predetermined range inside the 33.

On the other hand, the fixing groove 22 formed in the inner circumference of the fixing cover (20, 21) to cover and fix the flow rollers (40, 41) while corresponding to the fixing grooves (32, 33) of the hub flange (30, 31) , 24 is formed in the longitudinal direction, such as the fixing grooves (32, 33) of the hub flanges (30, 31), one end is located on the inner surface where both fixing cover (20, 21) is in contact with the fixing groove ( 22, 24 is maintained in the open state as it is, the inner end of the fixing grooves (22, 24) toward the outside of the sleeve and the fixing grooves (32, 33) of the hub flange (30, 31) Similarly, the step rollers 29 are formed to constrain the flow of the flow rollers 40 and 41.

On the other hand, Figure 3 and Figure 4 is a partial cross-sectional view and a full longitudinal cross-sectional view, respectively, so that it is easy to see the coupling state of both hub flanges (30, 31) in the coupling state of the coupling device according to the present invention having the above-described configuration Doing.

3 and 4, the restraints 38 and 39 of the hub flanges 30 and 31 are positioned inside the fixing covers 20 and 21, and are closely attached to the inner faces of the restraints 38 and 39. Or both of the fixing covers 20 and 21 which restrain the restraint portions 38 and 39 of the hub flanges 30 and 31 are coupled to the fastening portions 27 and 28. It is firmly coupled by a plurality of fastening bolts (23a).

In addition, the hub flanges 30 and 31, each of which has a rotation shaft coupled to each other and received a rotational force, are provided through flow rollers 40 and 41 fitted to the outer circumference of the restraints 38 and 39 respectively formed at the inner ends thereof. It is configured to transmit the rotational force from one side to the other side.

As shown in the longitudinal cross-sectional view of Figure 4, the fixing grooves (32, 33) formed on the outer periphery of the restraints (38, 39) of the hub flange (30, 31) is made of a semi-elliptic shape flows to be seated inside Fixing grooves 22 and 24 formed in the inner circumference of the sleeves 25 and 26 of the fixing covers 20 and 21 to limit the movement of the rollers 40 and 41 and to surround the outer circumferences of the restraints 38 and 39. ) Is formed of a structure in which the stepped end 29 is formed at the outer end to be wrapped to restrain the separation of the flow rollers 40 and 41, and the inner end of the fixing grooves 22 and 24 is not provided with a separate stepped end. Constrains the flow rollers 40 and 41 through the outer circumferential pressurization of the flow rollers 40 and 41, and is configured to rotate by receiving the rotational force of the flow rollers 40 and 41.

In addition, the inner circumferential surfaces of the fixing grooves 32, 33, 22, and 24 formed in the hub flanges 30 and 31 and the fixing covers 20 and 21, respectively, are finer than the outer peripheral contact portions of the flow rollers 40 and 41. Larger, flow rollers 40 and 41 are rotated in a predetermined range in the inside of the upper and lower fixing grooves 32, 33, 22, and 24 during the overload or shock transmission transmitted from the rotating shaft to absorb and eliminate the overload and external impact. Configured to do so.

Coupling apparatus using a flow roller according to the present invention having such a configuration is the rotational force generated from the rotating shaft of the drive motor side through the flow roller 40 and the fixed cover (20, 21) through one hub flange (30) It is transmitted to the power transmission shaft via the other side flow roller 41 and the hub flange (31).

Therefore, the rotational force is smoothly maintained only when the horizontal state is maintained between the rotary shafts coupled to the left and right sides. Horizontal state error, left and right angle error and torsional error according to the axial flow may occur, but in the present invention, the medium for transmitting the rotational force is made through the elliptical or rectangular flow roller 40, the flow roller 40 Has a predetermined flow state inside the fixed groove (32, 33, 22, 24) with a constant play, even if a predetermined error occurs between the two shaft power transmission without generating a special load on the coupling device This is done smoothly.

On the other hand, the other configuration for the coupling device that is not mentioned in the above detailed description of the present invention will be carried out within the same or equivalent range to the conventional known art, those skilled in the art based on the detailed description of the present invention Implementation can be made easily.

5: External Gear 6: Internal Gear
10: gear coupling 20, 21: fixed cover
20a, 21a: Through hole 22,24: Fixed groove
23: fastening hole 23a: fastening bolt
25, 26: sleeve 27, 28: fastening portion
29: step 30,31: hub flange
32,33: fixing groove 34,35: through hole
36,37: sleeve 38,39: restraint part
40,41: flow roller 100: coupling device

Claims (5)

A pair of hub flanges having a through hole formed therein so that different rotating shafts are coupled in a horizontal state at both sides thereof, and the inner flanges are in contact with each other;
A pair of fixing covers coupled to the pair of hub flanges outside to firmly couple both side hub flanges;
The inner periphery of the hub flange fixed to the fixing cover and positioned on the inner side of the fixing cover, and the inner sleeve of the sleeve of the fixing cover facing the outer periphery of the hub flange, respectively, while maintaining a predetermined interval in the circumferential direction, A plurality of fixing grooves formed;
And a plurality of flow rollers which are respectively fitted into the plurality of upper and lower fixing grooves to transfer the rotational force of the hub flange to which the rotation shaft is coupled; and a coupling device using a flow roller.
The method of claim 1,
The coupling groove formed on the outer periphery of the hub flange and the inner periphery of the fixing cover is a coupling device using a flow roller, characterized in that made of an oval or rectangular long length in the installation direction of the rotary shaft relative to its width.
The method of claim 2,
The flow roller coupled to the fixing groove is a coupling device using a flow roller, characterized in that made in the same shape as the shape of the fixing groove is made of a long oval or rectangular in the installation direction of the rotary shaft.
4. The method according to any one of claims 1 to 3,
The fixed groove which is formed on the outer circumference of the hub flange and the inner circumference of the fixed cover to surround the flow roller is a flow roller so that the flow roller located inside the fixed groove is capable of idling or flowing in the event of an overload or external impact transmitted to the rotating shaft. Coupling apparatus using a flow roller, characterized in that consisting of a structure in which a predetermined clearance is formed between and.
The method of claim 1,
The fixing groove formed on the outer periphery of the sleeve of the hub flange is made of a semi-ellipse to surround a portion of the flow roller seated therein,
The fixing groove formed on the inner circumferential surface of the fixing cover has a predetermined step formed at one end of the fixing cover to prevent separation of the flow roller, and the other end of the inner surface to which both fixing covers are contacted is formed. Coupling apparatus using a flow roller, characterized in that the step is not formed and is configured to be kept open.

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