CN210153107U

CN210153107U - Flexible coupling integrating radial bearing and thrust bearing

Info

Publication number: CN210153107U
Application number: CN201920688278.0U
Authority: CN
Inventors: 李典来; 李一兴; 周振东
Original assignee: 704th Research Institute of CSIC
Current assignee: 704th Research Institute of CSIC
Priority date: 2019-05-14
Filing date: 2019-05-14
Publication date: 2020-03-17
Anticipated expiration: 2029-05-14

Abstract

The utility model relates to an integrated radial and thrust bearing's flexible coupling has a pair of half-coupling, a pair of coupling shaft that can regard as axle journal and thrust dish to use, and a left side, right side coupling shaft are fixed in the half-coupling of homonymy through the round pin respectively, and a left side is in the same place through threaded connection between the coupling shaft of the right side, and a left side, right side coupling shaft overcoat has connect the tooth axle, tooth axle both ends external tooth respectively with left and right half-coupling internal tooth meshing connection, and the tooth axle can slide half-coupling rear end left, throw off with right half-coupling. The coupling can be used as a common fulcrum and a relative dead point of the driving shaft and the driven shaft in addition to the functions of connecting the driving shaft and the driven shaft and transmitting torque, so that the axial size of the rotary mechanical device is shortened.

Description

Flexible coupling integrating radial bearing and thrust bearing

Technical Field

The utility model relates to a coupling, especially a flexible coupling and mounting method.

Background

The coupling is a mechanical part used for firmly connecting a driving shaft and a driven shaft in different mechanisms to rotate together and transmitting motion and torque. Couplings can be divided into two broad categories, rigid couplings and flexible couplings. The rigid coupling has simple structure and low manufacturing cost, but does not have the buffer property and the capability of compensating the relative displacement of two axes, and the common rigid coupling comprises a flange coupling, a sleeve coupling, a clamping shell coupling and the like. Flexible couplings can be further divided into inelastic element flexible couplings and elastic element flexible couplings. The former type only has the capability of compensating relative displacement of two axes, but cannot buffer and damp vibration, and a sliding block coupling, a tooth type coupling, a universal coupling and the like are common. The latter type has the capability of compensating relative displacement of two axes due to the elastic element, and has the buffering and vibration damping functions of common elastic sleeve pin couplings, elastic pin couplings, quincunx couplings, tire type couplings, reed couplings and the like.

The existing coupling mainly plays a role in connecting a driving shaft and a driven shaft, and no coupling which can be simultaneously used as a common fulcrum and a relative dead point of the driving shaft and the driven shaft and has the functions of bearing support and thrust is available at present.

The prime mover and the driven machine of a conventional rotary machine are generally supported by four radial bearings, and the driving shaft (prime mover) and the driven shaft (driven machine) are respectively supported by two radial bearings and then coupled by a coupling. For application to rotating machines with severely restricted axial space dimensions, it is important to shorten the axial dimension. The utility model aims at using the shaft coupling as the common support point and the relative dead point of driving shaft and driven shaft, not only can shorten the journal part that former diaxon end supported the department, the diaxon can share a radial and thrust bearing moreover, has shortened the axial dimensions of diaxon by a wide margin.

Disclosure of Invention

The utility model aims to provide an integrated radial and thrust bearing's flexible coupling, this shaft coupling except the effect of hookup driving shaft and driven shaft, transmission moment of torsion, can also regard as the common fulcrum and the relative dead point of driving shaft and driven shaft to shorten rotating machinery's axial dimension.

In order to achieve the above purpose, the technical scheme of the utility model is that: a flexible coupling integrating radial and thrust bearings comprises a pair of half couplings which can be used as shaft necks and thrust discs and a pair of connecting shafts, wherein the left connecting shaft and the right connecting shaft are respectively fixed in the half couplings at the same side through pins, the left connecting shaft and the right connecting shaft are connected together through threads, a gear shaft is sleeved outside the left connecting shaft and the right connecting shaft, external teeth at two ends of the gear shaft are respectively meshed with internal teeth of the left half coupling and the right half coupling, and the gear shaft can slide to the rear end of the left half coupling and is separated from the right half coupling.

Furthermore, an oil retainer ring and a front elastic retainer ring are respectively arranged in the top parts of the left half coupling and the right half coupling, wherein a shaft sleeve and a rear elastic retainer ring are arranged in the right half coupling, two ends of the shaft sleeve are respectively in contact connection with the front elastic retainer ring and the inner side of the outer tooth at one end of the gear shaft, the rear elastic retainer ring is in contact connection with the outer side of the outer tooth at one end of the gear shaft, and an elastic retainer ring is arranged in the left half coupling; the shaft sleeve is provided with an annular groove.

Furthermore, the oil deflector ring and the shaft sleeve are of two-half structures.

Furthermore, the left half coupler and the right half coupler are respectively connected with the left rotating shaft and the right rotating shaft through a positioning pin and a bolt, and the bolt is provided with a stop washer.

Furthermore, bearing assemblies are mounted at the shaft necks of the left half coupling and the right half coupling, each bearing assembly consists of a radial bearing and two thrust pairs, and corresponding oil grooves are formed in the bearing assemblies to provide corresponding lubricating oil for the radial bearings, the two thrust pairs and the transmission tooth surface.

The utility model has the advantages that:

the utility model discloses an integrated radial and thrust bearing's flexible coupling has following advantage:

1. besides the connection of the driving shaft and the driven shaft, the connecting rod can also be used as a common fulcrum and a relative dead point of the driving shaft and the driven shaft, so that the axial size of the rotary mechanical device is shortened;

2. the drum-shaped gear transmission is adopted, so that the relative displacement of the axial line of the driving shaft and the axial line of the driven shaft can be compensated.

Drawings

Fig. 1 is a schematic structural view of the flexible coupling integrated with radial and thrust bearings according to the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings and examples.

As shown in fig. 1, the flexible coupling integrated with radial and thrust bearings of the present invention is mainly composed of left and

right half couplings

7 and 16, a gear shaft 14, left and

right coupling shafts

4 and 17, a shaft sleeve 13, and auxiliary parts required for fastening and positioning these main parts. The left and

right half couplings

7, 16 can be used as a shaft neck and a thrust disc, and the inner teeth of the left and right half couplings are matched with the outer teeth of the gear shaft 14 respectively for transmission. The left and

right half couplings

7, 16, the left and

right coupling shafts

4, 17 and the gear shaft 14 are matched for processing and production, corresponding marks are engraved, any one part is damaged, and the whole set of parts is replaced. The left and

right coupling shafts

4, 17 are fixed to the left and right

half couplers

7, 16 by pins 5, respectively, and the left coupling shaft 4 and the right coupling shaft 17 are coupled together by screw threads. The gear shaft 14 can be slid into the first coupling half 7 to disengage the right coupling half 16. Once the left coupling shaft 4 is fixed to the left coupling half 7 and the right coupling shaft 17 is fixed to the right coupling half 16, they should not be separated. The left and

right coupling halves

7, 16 are then coupled to the respective shafts with the left and

right coupling shafts

4, 17 fixed thereto. The left half coupling 7, the right half coupling 16 and the rotating shaft are positioned through positioning pins and then connected through bolts 2, and the bolts 2 are provided with stop washers 3. After the left and

right half couplings

7, 16 are connected and fixed with the corresponding rotating shafts, the thrust surfaces and the shaft necks on the left and

right half couplings

7, 16 are processed together with the rotating shafts. And after the thrust surface and the shaft neck are machined, balancing the rotating shaft. After the rotating shaft is balanced, the half coupling fixedly connected with the rotating shaft is not separated any more unless the coupling needs to be replaced.

Before the left rotating shaft 1 and the right rotating shaft 18 are connected, the gear shaft 14 and the shaft sleeve 13 are firstly installed in the first half coupling 7, and then the elastic retainer ring 8 is installed. Before connecting the two rotating shafts, the right rotating shaft 18 is fixed by a special clamp. And moving the left rotating shaft 1 until the first left connecting shaft 4 is contacted with the right connecting shaft 17, then rotating the left rotating shaft 1, and simultaneously applying a certain thrust to the left rotating shaft 1 until the gap between the left and right

half couplers

7 and 16 reaches a set value, and connecting the left connecting shaft 4 and the right connecting shaft 17 to the right. The shaft sleeve 13 and the gear shaft 14 are moved to the right half coupling 16 together through the annular groove of the shaft sleeve 13 until the tail end of the shaft sleeve 13 is positioned at the middle of the gap between the left half coupling 7 and the right half coupling 16, the oil deflector ring 12 is arranged, and then the oil deflector ring 12, the shaft sleeve 13 and the gear shaft 14 are moved to the right coupling 16 through the annular groove of the gear shaft 14. The circlip 15 serves as an end stop for the gear shaft 14. After the oil slinger 9 is installed, the elastic slinger 10 is installed. The oil slinger 9, the oil slinger 12 and the shaft sleeve 13 are all designed in two halves.

The bearing assembly 11 consists of a radial bearing and two thrust pair main thrust pair and auxiliary thrust pair, and is arranged at the shaft necks of the left half coupling 7 and the right half coupling 16. Corresponding oil grooves are arranged in the bearing assembly to provide corresponding lubricating oil for the radial bearing, the two thrust pairs and the transmission tooth surface.

Claims

1. A flexible coupling incorporating radial and thrust bearings having a pair of coupling halves operable as a journal and thrust disc, a pair of coupling shafts, characterized in that: the left and right connecting shafts are fixed in the half couplers at the same side through pins respectively, the left and right connecting shafts are connected together through threads, the left and right connecting shafts are sleeved with gear shafts, external teeth at two ends of the gear shafts are respectively meshed with internal teeth of the left and right half couplers, and the gear shafts can slide to the rear end of the left half coupler and be separated from the right half coupler.

2. The flexible coupling incorporating radial and thrust bearings of claim 1, wherein: an oil retainer ring and a front elastic retainer ring are respectively arranged in the top parts of the left half coupling and the right half coupling, wherein a shaft sleeve and a rear elastic retainer ring are arranged in the right half coupling, two ends of the shaft sleeve are respectively in contact connection with the front elastic retainer ring and the inner side of the outer tooth at one end of the gear shaft, the rear elastic retainer ring is in contact connection with the outer side of the outer tooth at one end of the gear shaft, and an elastic retainer ring is arranged in the left half coupling; the shaft sleeve is provided with an annular groove.

3. The flexible coupling incorporating radial and thrust bearings of claim 2, wherein: the oil deflector ring and the shaft sleeve are of two-half structures.

4. The flexible coupling incorporating radial and thrust bearings of claim 1, wherein: the left half coupler and the right half coupler are connected with the left rotating shaft and the right rotating shaft through a positioning pin and a bolt respectively, and the bolt is provided with a stop washer.

5. The flexible coupling incorporating radial and thrust bearings of claim 1, wherein: and bearing assemblies are arranged at the shaft necks of the left half coupling and the right half coupling and consist of a radial bearing and two thrust pairs, and corresponding oil grooves are arranged in the bearing assemblies to provide corresponding lubricating oil for the radial bearing, the two thrust pairs and the transmission tooth surface.