CN204387145U - Double-conical-surface friction is without binding axial organ - Google Patents

Abstract

The utility model discloses a double-cone friction keyless shaft coupling, which comprises a conical shaft, two fastening sleeves, a cylindrical pin and a retaining ring, and is characterized in that two fastening sleeves are set on the conical shaft, A retaining ring is installed on the outside of the tightening sleeve, and the cylindrical tip passes through the through hole on the tightening sleeve and is inserted into the retaining ring so that the tightening sleeve, the retaining ring and the tapered shaft are fixed together. The utility model has the characteristics of high coaxiality, reliable connection, compact structure, convenient disassembly and assembly, can transmit motion and power, has overload protection function and the like.

Description

Double cone friction keyless coupling

technical field

The utility model relates to a shaft coupling, in particular to a double-cone friction keyless shaft coupling.

Background technique

Coupling is a widely used device in mechanical transmission. Its main function is to connect two shafts to transmit torque and motion. If necessary, through proper design, the coupling can also be used as a safety device to prepare for overloading of the machine. Play the role of protecting important parts. However, the current rigid coupling has a large volume and structure, and mostly relies on set screws to transmit torque, so it is difficult to guarantee the coaxiality. To realize the function of overload protection, it is necessary to add a pin structure, which greatly weakens the strength of the shaft.

Contents of the invention

The purpose of this utility model is to provide a double-cone friction keyless coupling, which overcomes the above-mentioned problems and deficiencies of the prior art, not only ensures the performance of the coupling, but also is convenient and quick to disassemble, and meets the needs of actual use. Increased productivity.

The purpose of this utility model is achieved in this way: a double-cone friction keyless coupling, including a conical shaft, two fastening sleeves, a cylindrical pin, and a retaining ring, which is characterized in that the conical shaft is fitted There are two fastening sleeves, a stop ring is installed on the outer side of the fastening sleeve, and the cylindrical tip is inserted into the stop ring through the through hole on the fastening sleeve so that the fastening sleeve, the stop ring and the tapered shaft are fixed together.

The two ends of the tapered shaft are outer tapered structures.

The fastening sleeve adopts a threaded structure.

The outer tapered surfaces at both ends of the coupling cooperate with the inner tapered surfaces of the two connected shafts to complete the positioning between the two shafts, and then complete the connection between the coupling and the connecting shaft through the thread structure of the fastening sleeve, and at the same time the fastening sleeve The pressing force is transmitted to the taper surfaces at both ends through the shaft shoulder or the retaining ring, so that friction is generated between the taper surfaces, so as to achieve the purpose of torque transmission.

When in use, engage the outer tapered surface of the central shaft of the coupling with the inner tapered surface of the connected shaft, and turn the tightening sleeve to retract the outer tapered surface of the central shaft of the coupling with the inner tapered surface of the connected shaft. Tighten to the required matching tolerance, the tightening process requires uniform force, and the shaft and the coupling are joined together. When the coupling needs to be disassembled, just loosen the fastening sleeves, and the coupling can be removed immediately. Save labor and time, convenient and quick.

The utility model realizes the fusion of advantages such as convenient processing, convenient and reliable installation of the thread structure, reliable positioning of the cone structure, and large contact area through the structure of the cone surface positioning and thread fastening, and avoids the thread structure that cannot guarantee the coaxiality, The disadvantage of only one-way transmission of motion and power makes the double-cone friction keyless coupling have the characteristics of high coaxiality, reliable connection, compact structure, convenient disassembly, transmission of motion and power, and overload protection function. The utility model has a simple and compact structure, is easy to manufacture and process, and at the same time ensures better coaxiality and can reliably transmit motion, and is suitable for low-power mechanical equipment.

Description of drawings

Fig. 1 is a structural diagram of the utility model.

Fig. 2 is a schematic diagram of the connection structure of the present invention.

In the figure, 01-cone shaft, 02-clamping sleeve 1, 03-clamping sleeve 2, 04-cylindrical pin, 05-stop ring, 06-connected shaft 1, 07-double cone friction keyless coupling , 08- is coupled axis 2.

Detailed ways

Below with reference to accompanying drawing, the concrete implementation of the present utility model is described in further detail.

As shown in Figure 1, the double cone friction keyless coupling of the present invention consists of a cone shaft (01), a fastening sleeve 1 (02), a fastening sleeve 2 (03), a cylindrical pin (04), The retaining ring (05) is composed of five parts. First put the clamping sleeve 1 (02) and clamping sleeve 2 (03) into the tapered shaft (01) opposite to each other, then put the retaining ring (05) in, and finally Insert the cylindrical tip (04) into the retaining ring (05) through the through hole on the retaining sleeve 2 (03), so that the retaining sleeve 2 (03), retaining ring (05) and the tapered shaft (01) are fixed together , fix the clamping sleeve 1 (02) in the same way. Both ends of the tapered shaft (01) are outer tapered structures. Clamping sleeve 1 (02) and clamping sleeve 2 (03) adopt thread structure.

Fig. 2 shows the connection structure diagram of the utility model. Insert the outer cone at one end of the double-cone friction keyless coupling (07) into the inner cone of the connected shaft 1 (06). Similarly, the other end of the double-cone friction keyless coupling (07) and The taper surface of the connected shaft 2 (08) fits, because the connection is the positioning of the taper surface, which ensures the connection between the double-cone friction keyless coupling (07) and the connected shaft 1 (06) and the connected shaft 2 (08). There is a high coaxiality between them, which ensures that the entire connection structure is relatively compact, and at the same time increases the contact area between the connected shaft and the coupling, reduces the gap between the connection structure, and improves the force of the connection structure. Then the double cone The threaded structure of the tightening sleeve 1 (02) and the tightening sleeve 2 (03) of the surface friction keyless coupling (07) generates a pressing force, and the pressing force passes through the collar and the stopper of the tapered shaft (01) respectively. The ring (05) and the cylindrical pin (04) are transferred to the tapered surface, so that the double-cone surface friction between the keyless coupling (07) and the connected shaft 1 (06) and the connected shaft 2 (08) Tight fit, reducing the gap between the contact cones, not only can increase the rigidity of the structure, but also can increase the contact area between the cones, improve the stress state, so that the double cone friction keyless coupling (07) and the A large friction force is generated between the coupling shaft 1 (06) and the coupled shaft 2 (08), so as to achieve the purpose of torque transmission, and because it is a friction transmission, the double cone friction keyless coupling (07) It will slip when overloaded and can protect other components. In this way, through the tapered structure at both ends of the double-cone friction keyless coupling (07), a good coaxiality between the coupled shaft 1 (06) and the coupled shaft 2 (08) is ensured; at the same time, due to The tapered surface structure increases the contact area between the connected shaft and the coupling, coupled with the screw fastening structure, the entire connection structure has better rigidity and higher reliability.

Claims (1)

1. A double-cone friction keyless shaft coupling, comprising a cone shaft, two fastening sleeves, a cylindrical pin, and a retaining ring, is characterized in that the two ends of the cone shaft are outer cone structures, and the Two fastening sleeves are set on the tapered shaft. The fastening sleeve adopts a threaded structure, and a stop ring is installed on the outside of the fastening sleeve. The ring is secured to the tapered shaft.