CN102644675A - Squeezing and twisting combined-type elastic coupler - Google Patents

Abstract

The invention discloses an extrusion and torsion composite elastic coupling, which comprises an input disc, an output disc, an extruded rubber block and a torsion transmission assembly; The rubber block is set in the arc-shaped groove, and the output plate is provided with a protrusion extending into the arc-shaped groove and moving along the arc-shaped groove; the twist transmission assembly includes a twist rubber sleeve, a first transmission piece and a second transmission piece , the two ends of the torsion rubber sleeve are respectively fixedly connected with the first transmission piece and the second transmission piece. The coupling transmits power from the input disk to the output disk through the torsion transmission assembly and the extruded rubber block. Due to the torsional deformation of the torsional rubber sleeve, the extrusion and torsion composite elastic coupling can compensate the angle of the transmission shaft system. At the same time, because both the torsion rubber sleeve and the extruded rubber block have the function of buffering and damping, the extrusion and torsion compound elastic coupling has the advantages of low transmission noise, small vibration and long service life of the coupling.

Description

Extrusion and Torsion Compound Elastic Couplings

technical field

The invention relates to a transmission connecting piece in the mechanical field, in particular to a highly elastic coupling. the

Background technique

Elastic coupling is an important part connecting the power device and the drive system. According to the classification of elastomer materials, it can be divided into metal type and rubber type. Due to the characteristics of high rigidity, high hardness, and weak impact resistance of metal materials, it often causes problems in the transmission system such as vibration, noise, impact, poor reliability, and short life. Disadvantages of angular displacement. In order to solve these problems, the use of rubber with high elastic modulus and strong impact resistance to replace metal materials has been listed as a frontier topic in the scientific research field of high efficiency, energy saving and environmental protection in mechanical transmission systems. The rubber coupling transmits the torque through the shear or compression deformation of the elastic body, which can compensate the angular displacement and at the same time reduce vibration and noise. the

Contents of the invention

In view of this, the purpose of the present invention is to provide an extrusion and torsion composite elastic coupling, which has the characteristics of high torsional vibration stiffness, good vibration and noise reduction effect, and large compensation displacement. Concrete scheme of the present invention is:

The present invention is an extrusion and torsion composite elastic coupling, comprising an input disc, an output disc, an extruded rubber block and a torsion transmission assembly;

There are at least two arc-shaped grooves extending along the circumferential direction of the input plate, and the arc-shaped grooves are evenly arranged along the circumferential direction of the input plate. The extruded rubber blocks are arranged in the arc-shaped grooves. The output disc is provided with a protrusion that extends into the arc groove and can move along the arc groove;

The torsion transmission assembly includes a torsion rubber sleeve, a first transmission piece fixedly connected to the input disk, and a second transmission piece fixedly connected to the output disk, and the two ends of the torsion rubber sleeve are respectively fixed to the first transmission piece and the second transmission piece connect.

Further, both ends of the torsion rubber sleeve are arc-shaped protrusions, grooves matching the arc-shaped protrusions are provided on the first transmission piece and the second transmission piece, and threads are provided on the inner concave surface of the grooves , the first transmission piece, the torsion rubber sleeve and the second transmission piece are formed into an integral structure by molding and vulcanization;

Further, the input disc is also provided with a rubber column at the end of the arc groove, and the protrusion is located between the extruded rubber block and the rubber column;

Further, the extruded rubber block is cylindrical, and the cylindrical surface of the extruded rubber block is attached to the arc surface of the arc groove;

Further, the second transmission plate and the output disk are connected by screws, and the first transmission plate is provided with mounting holes corresponding to the screws.

Beneficial effects of the present invention: the extrusion and torsion composite elastic coupling of the present invention transmits power from the input disc to the output disc through the torsion transmission assembly and the extruded rubber block. Due to the torsional deformation of the torsional rubber sleeve, the extruded The compound elastic coupling with torsion and torsion can compensate the angular displacement error of the transmission shaft system. At the same time, because the torsion rubber sleeve and the extruded rubber block have the function of buffering and damping, the extruded and torsion compound elastic coupling has the transmission It has the advantages of low noise, small vibration and long service life of the coupling. the

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments. the

Fig. 1 is the front view of extrusion and torsion composite elastic coupling of the present invention;

Fig. 2 is a sectional view along A-A of Fig. 1;

Fig. 3 is a schematic diagram of the combined structure of the input disc, the extruded rubber block and the rubber column;

Fig. 4 is the front view of output disc;

Fig. 5 is a sectional view along B-B of Fig. 4 .

Detailed ways

The extrusion and torsion composite elastic coupling in this embodiment includes input disc 1, output disc 2, extruded rubber block 3 and torsion transmission assembly;

The input disk 1 is provided with an arc-shaped groove 1a extending along its circumferential direction, the number of the arc-shaped grooves 1a is four and evenly arranged along the circumferential direction of the input disk 1, and the extruded rubber block 3 is arranged in the arc-shaped groove In 1a, the output disk 1 is provided with a protrusion 2a that extends into the arc-shaped groove 1a and can move along the arc-shaped groove; When the pressing rubber block 3 rotates to contact with the bump 2a on the output disc 2, the pressing rubber block 3 will push the bump 2a to rotate, thereby transmitting the power from the input disc 1 to the output disc 2;

The torsion transmission assembly includes a torsion rubber sleeve 4, a first transmission piece 5 fixedly connected to the input disk 1 and a second transmission piece 6 fixedly connected to the output disk 2, and the two ends of the torsion rubber sleeve 4 are connected to the first transmission piece respectively. 5 and the second transmission plate 6 are fixedly connected; the transmission mode of the torsion transmission assembly is: the power is transmitted to the output disk 2 through the input disc, the first transmission plate 5, the torsion rubber sleeve 4 and the second transmission plate 6 in sequence.

In different implementations, the number of arc-shaped grooves 1a can be adjusted, but the number is at least two. the

In this extrusion and torsion composite elastic coupling, the input disk 1 can be connected to the power input shaft through bolts, and the output disk 2 is provided with a spline hole, which is matched with the output shaft through splines; of course, in different embodiments, The extrusion and torsion composite elastic coupling can also be connected with the input shaft and the output shaft through other connection methods. the

The extrusion and torsion composite elastic coupling transmits power from the input disk to the output disk through the torsion transmission assembly and the extrusion rubber block. Due to the torsional deformation of the torsional rubber sleeve 4, the extrusion and torsion composite elastic coupling The shaft device can compensate the angular displacement error of the transmission shaft system. At the same time, because the torsion rubber sleeve 4 and the extrusion rubber block 3 both have the function of buffering and damping, the extrusion and torsion composite elastic coupling has low transmission noise and low vibration. The advantages of small size and long service life of the coupling.

In this embodiment, the two ends of the torsion rubber sleeve 4 are arc-shaped protrusions, and the first transmission piece 5 and the second transmission piece 6 are provided with grooves matching the arc-shaped protrusions. Threads are provided on the inner concave surface of the body, and the first transmission piece 5, the torsion rubber sleeve 4 and the second transmission piece 6 are formed into an integral structure through molding and vulcanization. This structure twists the transmission assembly, and the two ends of the twisted rubber sleeve 4 are arc-shaped protrusions, which can increase the contact area with the first transmission piece 5 and the second transmission piece 6; the first transmission piece 5 and the second transmission piece Threads are provided on the groove of sheet 6, which can increase the connection strength between it and the torsion rubber sleeve 4; therefore, the torsion transmission assembly has good structural stability and strong force transmission capacity in the torsion direction. the

As an improvement to this embodiment, the input disc 1 is also provided with a rubber post 8 at the end of the arc-shaped groove 1a, and the protrusion 2a is located between the extruded rubber block 3 and the rubber post 8 . When the reverse occurs, the rubber column 8 can prevent the protrusion 2a on the output disk 2 from directly contacting the input disk 1 hard. This structure can play the role of buffer protection and prolong the service life of the elastic coupling. the

As an improvement to this embodiment, the extruded rubber block 3 is cylindrical, and the cylindrical surface of the extruded rubber block 3 is in contact with the arc surface of the arc-shaped groove. This structure can reduce the friction between the input discs of the extruded rubber block 3 force, reduce the friction and heat of the extruded rubber block 3, thereby reducing the wear and tear of the extruded rubber block 3 and avoiding its aging, and prolonging its service life. the

As an improvement to this embodiment, the second transmission plate 6 is connected to the output disc 2 by screws 7 , and the first transmission plate 5 is provided with mounting holes 5 a corresponding to the screws 7 . The installation hole 5a is directly opposite to the screw 7, and the screw 7 can be easily disassembled through the installation hole 5a. This structure makes the extrusion and torsion composite elastic coupling better in assembly performance. the

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention. the

Claims (5)

1. An extrusion and torsion composite elastic coupling, characterized in that: it includes an input disc, an output disc, an extruded rubber block and a torsion transmission assembly; There are at least two arc-shaped grooves extending along the circumferential direction of the input plate, and the arc-shaped grooves are evenly arranged along the circumferential direction of the input plate. The extruded rubber blocks are arranged in the arc-shaped grooves. The output disc is provided with a protrusion that extends into the arc groove and can move along the arc groove; The torsion transmission assembly includes a torsion rubber sleeve, a first transmission piece fixedly connected to the input disk, and a second transmission piece fixedly connected to the output disk, and the two ends of the torsion rubber sleeve are respectively fixed to the first transmission piece and the second transmission piece connect. 2. The extrusion and torsion composite elastic coupling according to claim 1, characterized in that: both ends of the torsion rubber sleeve are arc-shaped protrusions, and the first transmission piece and the second transmission piece are provided with There is a groove matching the arc-shaped protrusion, and the inner concave surface of the groove is provided with threads, and the first transmission piece, the torsion rubber sleeve and the second transmission piece are formed into an integral structure through molding and vulcanization. 3. The extrusion and torsion composite elastic coupling according to claim 2, characterized in that: the input plate is also provided with a rubber column at the end of the arc groove, and the protrusion is located at the end of the extruded rubber between the block and the rubber post. 4. The extrusion and torsion composite elastic coupling according to claim 3, wherein the extruded rubber block is cylindrical, and the cylindrical surface of the extruded rubber block is in contact with the arc surface of the arc groove. 5. The extrusion and torsion composite elastic coupling according to claim 4, characterized in that: the second transmission piece and the output disk are connected by screws, and the first transmission piece is provided with a screw corresponding to the screw. the mounting holes.

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