CN204739108U - A torsion spring elastic coupling - Google Patents

Abstract

The utility model belongs to the mechanical transmission field, concretely relates to torsional spring resilient coupling. Including the torsional spring that is used for the transmission moment of torsion, the end connection of one end and driving shaft one end of torsional spring, the other end of torsional spring and the end connection of driven shaft one end. Driving shaft and torsion spring connect's tip, driven shaft and torsion spring connect's tip do not set up the groove of threaded form, through the groove of this screw thread form, the downthehole of income torsional spring both ends can be twisted respectively with the driven shaft to the driving shaft, the realization torsional spring is connected with driving shaft, driven shaft. This shaft coupling can improve resilient coupling's buffering and inhale the ability of shaking, can simplify its structure simultaneously, and reduce cost reduces radial dimension.

Description

A torsion spring elastic coupling

【Technical field】

The utility model belongs to the field of mechanical transmission, in particular to a torsion spring elastic coupling.

【Background technique】

Couplings are commonly used components in mechanical transmission. The flexible coupling with elastic elements can not only compensate the relative displacement between the two shafts, but also has the ability of buffering and absorbing vibration. This type of coupling has been widely used, and there are more and more varieties. However, the existing flexible couplings with elastic elements generally have more complex structures, more parts, more expensive prices, larger radial dimensions, and some elastic couplings have weak buffering and vibration damping capabilities.

【Content of utility model】

The purpose of the utility model is to provide a torsion spring elastic coupling, which can improve the cushioning and shock absorbing ability of the elastic coupling, and at the same time can simplify its structure, reduce the cost, and reduce the radial size.

The utility model is achieved through the following technical solutions:

A torsion spring elastic coupling includes a torsion spring for torque transmission, one end of the torsion spring is connected to one end of a driving shaft, and the other end of the torsion spring is connected to one end of a driven shaft.

The end connected between the driving shaft and the torsion spring and the end connected between the driven shaft and the torsion spring are respectively provided with threaded grooves, through which the driving shaft and the driven shaft can be screwed into the holes at both ends of the torsion spring respectively. Inside, the torsion springs are respectively connected to the driving shaft and the driven shaft.

The pitches of the threaded grooves respectively provided at the end of the drive shaft connected to the torsion spring and the end of the driven shaft to the torsion spring are the same as the pitch of the torsion spring.

The lead angles of the threaded grooves respectively provided at the end of the drive shaft connected to the torsion spring and the end of the driven shaft to the torsion spring are the same as the helix angle of the torsion spring.

The cross-sectional shape of the threaded grooves provided at the end connected between the driving shaft and the torsion spring and the end connected between the driven shaft and the torsion spring is arc-shaped, and the diameter of the arc is the same as that of the steel wire of the torsion spring. of the same diameter.

The major diameters of the thread-like grooves respectively provided at the end of the driving shaft connected to the torsion spring and the end of the driven shaft connected to the torsion spring are smaller than the middle diameter of the torsion spring.

The minor diameters of the screw-shaped grooves respectively provided at the end connected between the driving shaft and the torsion spring and the end connected between the driven shaft and the torsion spring are the same as the inner diameter of the torsion spring.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model adopts a torsion spring to connect the driving shaft and the driven shaft to transmit torque. This coupling has a simple structure and fewer parts. When disassembling the coupling, it is only necessary to screw the driving shaft and the driven shaft Or screw it out of the torsion spring hole, easy to disassemble, low manufacturing cost, compact size;

Furthermore, since the intermediate connecting piece is a torsion spring, it has strong storage capacity and large elastic hysteresis performance, so it has strong buffering and vibration damping capacity, and can effectively reduce the dynamic load;

Furthermore, this type of coupling has a small radial dimension, which is especially suitable for occasions where the radial dimension is limited;

Furthermore, when the torsion spring is used for deformation, the coupling of the present invention has certain radial, axial and angular displacement compensation capabilities. In addition, the requirements for installation and processing accuracy are low, and the service life is long, which can be applied to higher rotational speeds. .

【Description of drawings】

Fig. 1 is the assembly drawing of the present utility model.

Fig. 2 is a shaft part diagram of the utility model.

Wherein, 1 is a driving shaft; 2 is a torsion spring; 3 is a driven shaft.

【Detailed ways】

Below in conjunction with accompanying drawing, the utility model is described in detail.

Referring to 1, in conjunction with Fig. 2, a torsion spring elastic coupling includes a torsion spring 2 for transmitting torque, one end of the torsion spring 2 is connected to the end of one end of the drive shaft 1, and the other end of the torsion spring 2 Connect with the end of one end of the driven shaft 3;

As shown in Figure 2, the end that the driving shaft 1 is connected to the torsion spring 2 and the end that the driven shaft 3 is connected to the torsion spring 2 are respectively provided with threaded grooves; The pitch is the same, the helix angle is the same, the cross-sectional shape of the groove is arc-shaped, and the diameter of the arc is the same as the diameter of the torsion spring 2 steel wire; the major diameter of the helical groove is less than the middle diameter of the torsion spring 2, The minor diameter of the threaded groove is the same as the inner diameter of the torsion spring 2 .

Through the groove, the driving shaft 1 and the driven shaft 3 can be respectively screwed into the holes at both ends of the torsion spring 2 to realize the connection between the torsion spring 2 and the driving shaft 1 and the driven shaft 3 .

When the utility model is in use, the driving shaft 1 rotates, the driving shaft 1 transmits the torque to the driven shaft 3 through the torsion spring 2, and the driven shaft 3 obtains the torque to rotate, and the process of torque transmission is realized.

In the process of torque transmission, the torsion spring 2 has a strong storage capacity and large elastic hysteresis performance, so the deformation of the torsion spring 2 makes the coupling of the utility model have a strong buffering and damping capacity, which can effectively reduce the dynamic At the same time, through the elastic deformation of the torsion spring 2, the coupling has certain radial, axial and angular displacement compensation capabilities, and has lower requirements for installation and machining accuracy, which increases the service life of the coupling and can be used for larger high speed.

The utility model is simple in structure, and the number of parts is small, through the screw-shaped grooves processed at the ends of the driving shaft 1 and the driven shaft 3, and then by screwing the ends into the holes at both ends of the torsion spring 2 to realize the connection. The installation of the shaft device can be screwed out when dismantling.

The driving shaft 1 of the coupling of the utility model is connected with the driven shaft 3 through the torsion spring 2. The radial dimension of this coupling is small, so the coupling is especially suitable for occasions where the radial dimension is limited.

Claims (7)

1. a torsion spring elastic coupling flexible coupling, it is characterized in that, comprise the torsion spring (2) for driving torque, one end of described torsion spring (2) is connected with the end of driving shaft (1) one end, and the other end of torsion spring (2) is connected with the end of driven shaft (3) one end.

2. a kind of torsion spring elastic coupling flexible coupling according to claim 1, it is characterized in that, the end that the end that described driving shaft (1) is connected with torsion spring (2), driven shaft (3) are connected with torsion spring (2) offers screw-shaped groove respectively, by this groove, driving shaft (1) and driven shaft (3) can be screwed in the hole at torsion spring (2) two ends respectively, realize torsion spring (2) respectively with the connection of driving shaft (1) and driven shaft (3).

3. a kind of torsion spring elastic coupling flexible coupling according to claim 2, it is characterized in that, described driving shaft (1) and the end that torsion spring (2) connects, driven shaft (3) are identical with the pitch of torsion spring (2) with the pitch of the screw-shaped groove that the end that torsion spring (2) is connected is offered respectively.

4. a kind of torsion spring elastic coupling flexible coupling according to claim 2, it is characterized in that, described driving shaft (1) and the end that torsion spring (2) connects, driven shaft (3) are identical with the helix angle of torsion spring (2) with the lead angle of the screw-shaped groove that the end that torsion spring (2) is connected is offered respectively.

5. a kind of torsion spring elastic coupling flexible coupling according to claim 2, it is characterized in that, the sectional shape of the screw-shaped groove that the end that the end that described driving shaft (1) is connected with torsion spring (2), driven shaft (3) are connected with torsion spring (2) is offered respectively selects circular arc, and the diameter of described circular arc is identical with torsion spring (2) gauge of wire.

6. a kind of torsion spring elastic coupling flexible coupling according to claim 1 and 2, it is characterized in that, the large footpath of the screw-shaped groove that the end that the end that described driving shaft (1) is connected with torsion spring (2), driven shaft (3) are connected with torsion spring (2) is offered respectively is less than the central diameter of torsion spring (2).

7. a kind of torsion spring elastic coupling flexible coupling according to claim 1 and 2, it is characterized in that, described driving shaft (1) and the end that torsion spring (2) connects, driven shaft (3) are identical with the internal diameter of torsion spring (2) with the path of the screw-shaped groove that the end that torsion spring (2) is connected is offered respectively.