CN2566040Y - Coupling device - Google Patents

Abstract

A coupling device comprises a bearing seat, a transmission shaft penetrating the bearing seat, a connecting slide seat sleeved on the transmission shaft, and a working shaft, wherein the transmission shaft can rotate under the drive of power, one end part of the transmission shaft is formed into a working shaft support which is provided with an arc-shaped groove and a plurality of clamping parts arranged on the wall surface of the arc-shaped groove, the working shaft is provided with a shaft body and a connecting seat, the shaft body is provided with a gear part in a surrounding manner, the connecting seat is provided with a hollow sleeve, the inner ring part of the sleeve is formed with a gear part which can be connected with the gear part, and a plurality of through holes are radially arranged and can be connected with the clamping parts on the working shaft support. The utility model discloses can supply transmission working shaft to rotate the eccentricity and reduce and more can improve life and reduce the replacement part.

Description

Coupling

【Technical field】

The utility model relates to a shaft coupling device, in particular to a shaft coupling device which can improve the service life and link transmission efficiency in use.

【Background technique】

The shaft coupling is a driving device that drives the working shaft to rotate. As shown in Figure 1, an existing shaft coupling generally includes a base 10, a transmission shaft 20, a clutch handwheel 30, a bushing 40. A pressing block 50, and a working shaft 60.

The base 10 is positioned on a mechanical device, and has a hollow chamber 101 inside, and two bearings 102 disposed in the hollow chamber 101 .

The transmission shaft 20 can be inserted into the hollow chamber 101 through the bearing 102 to form a rotatable state. In addition, it has a working shaft support 201 opposite to the end that penetrates into the hollow chamber 101, and a buckle The C-shaped buckle 202 fixed on the end of the transmission shaft 20; the working shaft support 201 is located at the front end of the transmission shaft 20, and has an arc-shaped groove 203 coaxial with the transmission shaft 20, two longitudinally arranged Positioning bead holes 204 on both sides of the groove 203, a pivot hole 205 at the bottom of its right side, four screw holes 206 scattered on the front end, two pin holes 207 at the bottom of its front end, and An arc portion 208 and a ring portion 209 are formed at the rear end.

The clutch handwheel 30 has a matching opening 301 corresponding to the working shaft support 201, a perforation 302 corresponding to the pivot hole 205, a pin 303 that can be pivoted in the perforation 302, and a second ring on it. An insertion hole 304 at the top, two limiting members 305 respectively disposed in the insertion holes 304 , a recessed edge 306 formed on the front end thereof, and a pin hole 307 disposed on the recessed edge 306 .

The bushing 40 has a polygonal groove 401, a pair of protrusions 402 corresponding to the arc-shaped groove 203, four locking holes 403 corresponding to the screw holes 206, and two connecting holes 404 corresponding to the pin holes 207 of the working shaft support 201 , two bolts 405 that can be locked on the working shaft support 201 through the lock hole 403 and the screw hole 206, and two bolts 406 that can pass through the pin hole 207 and the connecting hole 404.

The pressing block 50 is provided with three connecting holes 501 corresponding to the pin holes 307 , and a pin 502 which can pass through each connecting hole 501 and be positioned in the pin hole 307 .

When assembling, install the two bearings 102 in the hollow chamber 101 of the base 10 in sequence, and then pass the transmission shaft 20 between the bearings 102 of the base 10, so that one of the bearings 102 abuts against the ring portion 209, The other bearing 102 is fastened with the C-shaped buckle 202, and then the working shaft support 201 is fitted with the fitting opening 301 of the clutch hand wheel 30, and then the pin 303 is passed through the shaft through hole 302 and the pivot hole 205. Be pivoted, then the bushing 40 is fixed on the working shaft support 201 with the bolt 405 and the latch 406, and then the pressure block 50 is fixed in the pin hole 307 of the clutch handwheel 30 with the latch 502 to achieve the purpose of assembly.

Its use, as shown in Figures 1, 2, and 3, pushes the clutch hand wheel 30 with the hand and bends toward the base 10 to form a predetermined angle (as Figure 3), and the polygonal groove 401 can be opened, so that one with a corresponding The head end 601 of the working shaft 60 of the polygonal groove 401 can be connected with it, and then the clutch hand wheel 30 is pulled back to the original position, then the purpose of the shaft coupling can be achieved. A transmission power source (not shown) is provided to drive its rotation, so when the transmission shaft 20 is running, the working shaft 60 can be linked through the multi-sided groove 401 and its combination relationship, and then achieve the purpose of coupling transmission. However, although the existing coupling device can achieve the effect of driving the working shaft 60, there are still many deficiencies in the actual transmission that need to be improved urgently:

1. Since the working shaft 60 and the coupling device are linked by the butt joint between the head end 601 of the working shaft 60 and the polygonal groove 401, the head end 601 of the working shaft 60 needs to be processed to form a polygonal groove that can be matched with each other. The shape of 401, and the precision must be quite precise to be inserted into each other, but the length of the working shaft 60 is often quite long. In addition to being difficult to process, it also requires a high processing cost to make the working shaft 60 and the polygonal groove 401 Therefore, it has become a great disadvantage in product practice.

2. As mentioned above, after the working shaft 60 and the polygonal groove 401 are connected, it is inevitable that there will be machining tolerances, so there must be a gap between the two, so the working shaft 60 is connected to the transmission shaft 20 During operation, it is very easy to interfere with the transmission efficiency due to the gap, and when starting or stopping, the joint position of the working shaft 60 and the polygonal groove 401 will form an anti-shock mutual impact, thus making the working shaft 60 The service life of the head end 601 of the head end 601 and the bushing 40 of the shaft coupling is shortened successively, so the consumption replacement rate on this type of components is high, and the cost of relatively replacing this type of components is also high.

【Content of utility model】

The purpose of this utility model is to provide a coupling device that can improve the above-mentioned deficiency, reduce the rotation eccentricity of the transmission working shaft, improve the service life and reduce replacement parts.

The utility model provides a shaft coupling device, which comprises a bearing seat, a transmission shaft pierced in the bearing seat, a connecting sliding seat sleeved on the end of the transmission shaft, and a joint joint with the transmission shaft. A working shaft, one end of the transmission shaft is provided with a set of working shaft supports connected to the working shaft, which is characterized in that:

The working shaft support has an arc-shaped groove coaxial with the transmission shaft, and several engaging parts arranged on the wall surface of the arc-shaped groove. The working shaft has a shaft body and a set of sockets. The end of the body is spherical, and a toothing part is provided on the ring of the largest diameter. The assembly seat has a hollow sleeve, and the inner ring of the sleeve is provided with a toothing part that engages with the toothing part. The radial direction is provided with several perforations to assemble with the engaging portion on the working shaft support.

The coupling device is characterized in that:

The connecting slide seat is provided with a group of connection holes in the axial direction, and the inner ring wall of the group of connection holes is provided with several slots in the axial direction. The working shaft support further has a support body and several centering transmission columns. The seat body is provided with several axial grooves on its outer ring, and the centering transmission column is locked in each of the axial grooves and protrudes from the outer ring of the seat body.

The coupling device is characterized in that:

The connecting slide seat is connected with the transmission shaft, and the bearing housing has a push block outside it, and the link slide seat is provided with an arc groove relative to the push block.

The coupling device is characterized in that:

The bearing housing has a flange piece at its front end.

Hereby the effect and the advantage that the shaft coupling device of the present utility model can obtain are summarized as follows:

1. One end of the shaft body 41 of the working shaft 4 of the present invention is formed into a spherical shape, so when the transmission shaft 2 is driven, it can absorb the slight amplitude of the rotation without bending due to the deviation of the transmission force Deformation leads to wear and tear damage.

2. This utility model can support the axis of the working shaft 4 by means of the centering transmission column 212, and increase the contact area and the force-bearing surface, so the concentricity of the transmission can be improved, and the transmission of the rotational torque can be improved, and it is practical in application Can improve the precision of processing.

3. The utility model supports the shaft center of the working shaft 4 by means of the heart-seeking transmission column 212, and the center-seeking transmission column 212 is in the shape of a round rod, and the medium of the transmission through the joint of the outer ring arc surface of the center-seeking transmission column 212 does not Friction and impact on the angle are generated, so the abrasion and noise on the rotation are less likely to be generated.

4. The utility model uses the centering transmission column 212 as the transmission medium, and the centering transmission columns 212 are set as replaceable, even if the centering transmission column 212 is worn and damaged, only these centering transmission columns 212 need to be replaced , without replacing the entire set of working shafts 4.

【Description of drawings】

The shaft coupling device of the present utility model is described in detail below through the best embodiment and accompanying drawings, in the accompanying drawings:

Fig. 1 is an exploded perspective view of a conventional shaft coupling.

Fig. 2 is a combined sectional schematic view of a conventional shaft coupling device.

Fig. 3 is a schematic diagram of the operation of a conventional coupling device.

Fig. 4 is an exploded perspective view illustrating a better embodiment of the shaft coupling device of the present invention.

FIG. 5 is an exploded perspective view of the preferred embodiment in another direction.

Fig. 6 is a schematic perspective view of the working shaft not assembled on the transmission shaft in the preferred embodiment.

Fig. 7 is a schematic cross-sectional view of the working shaft of the preferred embodiment not assembled on the transmission shaft.

FIG. 8 is a three-dimensional combined schematic view of the preferred embodiment.

Fig. 9 is a cut-away schematic diagram of the preferred embodiment.

【Detailed ways】

As shown in Figures 4, 5, and 6, a better embodiment of the shaft coupling device of the present invention includes a bearing seat 1, a transmission shaft 2 passing through the bearing seat 1, a set of Connected to the connecting slide 3 on the end of the transmission shaft 2, and a working shaft 4 that can be combined with the transmission shaft 2.

The bearing housing 1 has an axial perforation 11, a flange 12 formed on its front end edge, a push block 13, and two bearings 14 arranged in the perforation 11, and the flange 12 is evenly provided with Four locking knots 121 can be used for the push block 13 to be locked on one of the lock knots 121 as required, and the front end edge of the push block 13 is formed into a triangular arc-shaped curved portion 131, and the push block 13 is set Knotted behind the locking portion 121 of the flange 12 , the arc-shaped curved portion 131 protrudes out of the flange 12 .

The transmission shaft 2 can be inserted into the through hole 11 through the bearing 14 to form a rotatable state, and has an end opposite to the through hole 11 formed as a working shaft support 21, and a fastening The buckle 22 on the end of the transmission shaft 2; the working shaft support 21 is located at the front end of the transmission shaft 2, and has a seat body 211, a number-seeking transmission column 212, and a coaxial position with the transmission shaft 2. arc-shaped groove 213 in the direction, and several engaging parts 214 provided on the wall surface of the arc-shaped groove 213, the bearing body 211 is provided with several axial grooves 215 in the axial direction on the outer ring portion thereof, and the centering transmission columns 212 is threaded and locked in each of the axial grooves 215 to protrude from the outer circumference of the support body 211 .

The connecting slide 3 and the transmission shaft 2 are in a rotationally connected state, and the connecting slide 3 has an arc groove 31 set relative to the push block 13, an axial assembly hole 32, and the number is arranged axially on the The slot 33 on the inner ring wall of the set of connecting holes 32 .

The working shaft 4 has a shaft body 41 and a set of sockets 42. The end of the shaft body 41 is generally spherical, and a toothing part 411 is arranged around the largest diameter. The set of sockets 42 has a hollow A sleeve 421, the inner ring of the sleeve 421 is formed with a gear joint 422 that can be engaged with the gear joint 411 of the shaft body 41, and there are screw joints 423 on both sides of the gear joint 422. The cover 424 on each threaded portion 423 and several through holes 425 are provided in the radial direction to be assembled with the engaging portion 214 on the working shaft support 21 .

During assembly, as shown in Figures 4, 6, and 7, the transmission shaft 2 is pivoted on the bearing seat 1 through the two bearings 14, so that it can be driven to rotate, and it is placed on the shaft support 21. Each of the centering transmission columns 212 is locked in the axial groove 215, and the push block 13 is locked on the locking part 121 of the flange 12 of the bearing seat 1, and then the combination of the connecting slide seat 3 The connecting hole 32 and the slot 33 fit the working shaft support 21, and the arc groove 31 of the connecting slide 3 fits the push block 13, so that the connecting slide 3 slides on the transmission shaft 2, and the One end section of the working shaft support 21 of the transmission shaft 2 will pass through the connecting slide 3; secondly, the shaft body 41 of the working shaft 4 is assembled with the assembly seat 42, so that the toothing part 411 on the shaft body 41 Align the toothed portion 422 on the inner ring of the sleeve 421, and use the two covers 424 to screw the toothed portion 422 to limit the end of the shaft body 41 that is engaged with the assembly seat 42, and finally The assembled working shaft 4 can be assembled by fitting the through hole 425 on the assembly seat 42 with the engaging portion 214 on the arc-shaped groove 213 of the working shaft support 21 .

During use, as shown in Figures 6, 8, and 9, when the working shaft 4 is aligned with the perforation 425 on its assembly seat 42, the working shaft support 21 protrudes from the card on the arc-shaped groove 213 of the connecting slide seat 3. When connecting part 214, the power source (not shown) can be used to drive the transmission shaft 2 to rotate, and the connecting slide 3 is connected to the transmission shaft 2 so that it can rotate synchronously, so it will also form a rotating state, but the When the connecting slide 3 rotates, the arc groove 31 on it fits on the push block 13 of the bearing housing 1, so as soon as the connecting slide 3 rotates, it will gradually pass through the arc edge of the push block 13 Sliding out towards the axial direction, then the working shaft support 21 protruding from its front end will be submerged in the assembly hole 32 of the connecting slide seat 3, so that the working shaft 4 ends on the working shaft support 21 will also Will enter the connecting slide 3 (as shown in Figure 8) along with the working shaft support 21, whereby, when the power source drives the transmission shaft 2, the working shaft 4 and the transmission shaft 2 will be driven simultaneously through the transmission shaft 2. When the connecting slide 3 rotates, the connecting slide 3, the working shaft 4 and the transmission shaft 2 will form a state similar to the direct connection of a circular shaft, so the axis of the working shaft 4 can be supported by the centering transmission column 212 in the transmission. , and increase the contact area and force-bearing surface, so the concentricity of the transmission can be improved, thereby improving the transmission of rotational torque, and the processing accuracy can be improved in practical applications.

In addition, the end of the shaft body 41 of the working shaft 4 is formed into a spherical shape, so when the transmission shaft 2 is transmitting, it can absorb the slight vibration amplitude in the rotation, and will not bend and deform due to the deviation of the transmission force and cause Abrasion damage phenomenon.

Claims (4)

1. A shaft coupling device, comprising a bearing seat, a transmission shaft passing through the bearing seat, a connecting sliding seat sleeved on the end of the transmission shaft, and a working shaft assembled with the transmission shaft Shaft, one end of the transmission shaft is provided with a set of working shaft supports connected to the working shaft, which is characterized in that: The working shaft support has an arc-shaped groove coaxial with the transmission shaft, and several engaging parts arranged on the wall surface of the arc-shaped groove. The working shaft has a shaft body and a set of sockets. The end of the body is spherical, and a toothing part is provided on the ring of the largest diameter. The assembly seat has a hollow sleeve, and the inner ring of the sleeve is provided with a toothing part that engages with the toothing part. The radial direction is provided with several perforations to assemble with the engaging portion on the working shaft support. 2. The shaft coupling device according to claim 1, characterized in that: The connecting slide seat is provided with a group of connection holes in the axial direction, and the inner ring wall of the group of connection holes is provided with several slots in the axial direction. The working shaft support further has a support body and several centering transmission columns. The seat body is provided with several axial grooves on its outer ring, and the centering transmission column is locked in each of the axial grooves and protrudes from the outer ring of the seat body. 3. The coupling device according to claim 1, characterized in that: The connecting slide seat is connected with the transmission shaft, and the bearing housing has a push block outside it, and the link slide seat is provided with an arc groove relative to the push block. 4. The shaft coupling device according to claim 1, characterized in that: The bearing housing has a flange piece at its front end.

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