CN219795896U - Coupling assembly and elevator hoist - Google Patents

Abstract

The utility model provides a coupler assembly and an elevator hoist, the coupler assembly comprises a coupler and a connecting piece, wherein N equally-spaced radial rectangular grooves are formed in a first port of the coupler, the connecting piece comprises a cylindrical body, a coaxial groove body axially formed in the first end of the cylindrical body and N radial rectangular protrusions circumferentially and equally-spaced at least on the outer surface of a second end side of the cylindrical body, the outer diameter of the cylindrical body is matched with the inner caliber of the first port of the coupler, and the N radial rectangular protrusions are matched with the structures of the N radial rectangular grooves so that the second end of the connecting piece can be coaxially and centrally clamped into the first port of the coupler. The embodiment of the utility model can reduce the maintenance failure rate, is convenient for maintenance and has low maintenance cost.

Description

Coupling assembly and elevator hoist

Technical Field

The utility model relates to the technical field of couplings, in particular to a coupling assembly and an elevator hoist.

Background

In the use process of the combined crane lifting hoist, the inside motor and the coupling are often damaged due to connection abrasion, the motor and the coupling are required to be replaced together during maintenance, the maintenance time is long, and the maintenance cost is high.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides a novel coupler assembly and an elevator hoist. The coupling assembly and the elevator hoist can reduce the maintenance failure rate, are convenient to maintain and have low maintenance cost.

Specifically, the present utility model provides a coupling assembly comprising:

the first port of the coupler is provided with N equally-spaced radial rectangular grooves;

the connecting piece comprises a cylindrical body, a coaxial groove body and N radial rectangular protrusions, wherein the coaxial groove body is formed in the first end of the cylindrical body along the axial direction, the N radial rectangular protrusions are at least arranged on the outer surface of the second end side of the cylindrical body at equal intervals in the circumferential direction, the outer diameter of the cylindrical body is matched with the inner caliber of the first port of the coupler, and the N radial rectangular protrusions are matched with the structures of the N radial rectangular grooves so that the second end of the connecting piece can be coaxially clamped into the first port of the coupler in a centering mode.

According to an embodiment of the present utility model, in the above coupling assembly, the coaxial groove is in the shape of a cylindrical groove.

According to an embodiment of the present utility model, in the above coupling assembly, a first connection structure is disposed in the coaxial slot body, and the first connection structure and the second connection structure form a detachable connection structure.

According to an embodiment of the present utility model, in the above coupling assembly, the detachable connection structure is a pin connection structure or a screw connection structure.

According to an embodiment of the present utility model, in the above coupling assembly, the coaxial groove body is a through hole groove;

according to an embodiment of the present utility model, in the above-described coupling assembly, each of the radial rectangular projections is arranged continuously in the axial direction on the outer surface of the cylindrical body.

According to one embodiment of the present utility model, in the above coupling assembly, the second end of the cylindrical body extends axially outwardly a predetermined length.

According to one embodiment of the present utility model, in the above-described coupling assembly, the radial rectangular protrusion has a height equal to a thickness of the first port of the coupling.

According to an embodiment of the present utility model, in the above coupling assembly, a top surface of the radial rectangular protrusion is an arc surface.

According to an embodiment of the present utility model, in the above coupling assembly, N is equal to 4, and the width of the radial rectangular protrusion is greater than 1/3 of the outer diameter of the cylindrical body and less than or equal to the outer diameter of the cylindrical body.

The utility model also provides an elevator hoist, which comprises a motor, a gear box and any coupler assembly, wherein the first end of the connecting piece is connected with a rotor shaft of the motor in an interference fit connection mode or a detachable connection mode, the second end of the connecting piece is coaxially and centrally clamped into the first port of the coupler, and the second port of the coupler is connected to the gear box through a bearing.

It is to be understood that both the foregoing general description and the following detailed description of the present utility model are exemplary and explanatory and are intended to provide further explanation of the utility model as claimed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. In the accompanying drawings:

fig. 1 is a schematic structural view of a coupling assembly according to one embodiment of the present utility model.

Fig. 2 illustrates an isometric cross-sectional view of the coupling assembly of fig. 1.

Fig. 3 shows a second end axial view of two example connectors of the present utility model.

Fig. 4 is a schematic structural view of a coupling assembly connected to a rotor shaft of an electric machine according to one embodiment of the present utility model.

Reference numerals illustrate:

coupling assembly 100

Coupling 101

Radial rectangular groove 1011

Connector 102

Cylindrical body 1021

Coaxial slot 1022

Radial rectangular projection 1023

Rotor shaft 401

Detailed Description

Embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. Reference will now be made in detail to the preferred embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Furthermore, although terms used in the present utility model are selected from publicly known and commonly used terms, some terms mentioned in the present specification may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Furthermore, it is required that the present utility model is understood, not simply by the actual terms used but by the meaning of each term lying within.

The basic principle and preferred embodiments of the present utility model will be discussed in more detail with reference to the accompanying drawings. Referring first to fig. 1, a coupling assembly 100 according to one embodiment of the present utility model generally includes a coupling 101 and a connecting member 102.

Wherein, the first port of the coupling 101 is opened with N radial rectangular grooves 1011 at equal intervals, wherein the pattern of each radial rectangular groove 1011 is various. For example, each radial rectangular groove 1011 may be an inner and outer annular arm shown in fig. 1 without radial groove arms, i.e. extending through the first port of the coupling 101; but is not limited to the version shown in fig. 1, and for another example, each radial rectangular recess 1011 may also be provided with two radial slotted arms, or with one radial slotted arm (i.e., one of the inner and outer annular arms extending through the first port of the coupling 101).

Wherein the connection member 102 includes a cylindrical body 1021, a coaxial groove 1022 opened in the axial direction at a first end of the cylindrical body 1021, and N radial rectangular protrusions 1023 arranged at equal intervals in the circumferential direction of the outer surface at least at a second end side of the cylindrical body 1021. Specifically, on the one hand, the outer diameter of the cylindrical body 1021 is matched with the inner caliber of the first port of the coupler 101, the cylindrical body 1021 plays a role in coaxially centering connection of the connecting piece 102 and the coupler 101, and on the other hand, the structure of the N radial rectangular protrusions 1023 and the N radial rectangular grooves 1011 is matched, the mutually matched structure can play a role in clamping the connecting piece 102 and the coupler 101, and the second end of the connecting piece 102 can be coaxially centered and clamped into the first port of the coupler 101 by matching the mutually matched structure.

In the preferred embodiment shown in fig. 1, the coaxial slot 1022 is in the shape of a cylindrical slot and is a through-hole slot through the cylindrical body 1021. In other embodiments, the coaxial slots 1022 may also be conventional slots having a bottom surface if the cylinder is sufficiently long. Also, in other embodiments, a first connection structure (e.g., while not limited to an internal thread structure, an external thread structure, a pin bore, etc.) is also provided in the coaxial slot 1022, the first connection structure and the second connection structure constituting a detachable connection structure, such as but not limited to a pin connection structure, a threaded connection structure, etc.

In the preferred embodiment shown in fig. 1, each radial rectangular protrusion 1023 is arranged axially consecutively on the outer surface of the cylindrical body 1021, i.e. from the second end of the cylindrical body to the second end. In other embodiments, if the cylinder is sufficiently long, a first location is disposed from the second end of the cylinder body, the first location being any location between the first end and the second end.

In the preferred embodiment shown in fig. 1, the second end of the cylindrical body 1021 is aligned with the radial rectangular protrusion 1023. In other alternative embodiments, the second end of the cylindrical body 1021 extends axially outward for a predetermined length to better perform the coaxial centering effect.

In the preferred embodiment shown in fig. 1, the port of the coupling 101 that interfaces with the connection member 102 is provided with a groove that is adapted to the outer diameter of the cylindrical body 1021 and the radial rectangular protrusion 1023 has a height that is adapted to the radial thickness of the groove, and the top surface of the radial rectangular protrusion 1023 is an arc surface. Additionally, in other alternative embodiments, the height of the radial rectangular protrusion 1023 may be less than the radial thickness of the groove of the first port of the coupling 101 or greater than the radial thickness of the groove of the first port of the coupling 101.

In the preferred embodiment shown in fig. 1, N is equal to 4. In other embodiments, N may be equal to any other value of 3, 5, 6, etc. In addition, in the present utility model, the width of the radial rectangular protrusion 1023 is greater than 1/3 of the outer diameter of the cylindrical body 1021 and less than or equal to the outer diameter of the cylindrical body 1021. FIG. 3 (a) is a second end axial view of an example connector 102; fig. 3 (b) is a second end axial view of another example connector 102, the radial rectangular protrusion 1023 of the example connector 102 having a width equal to the outer diameter of the cylindrical body 1021.

In addition, the present utility model provides an elevator hoist including a motor (e.g., a three-phase asynchronous motor), a gear box, and the coupling assembly 100 of the foregoing embodiment, wherein a first end of the connection member 102 is connected to a rotor shaft 401 of the motor in an interference fit connection or a detachable connection, as shown in fig. 4, and a second end of the connection member 102 is coaxially aligned to be engaged into a first port of the coupling 101, and a second port of the coupling 101 is connected to the gear box through a bearing.

In embodiments where the coaxial slots 1022 are cylindrical slots (preferably slot through holes) having an inner diameter that matches the outer diameter of the rotor shaft 401 of the motor so that the rotor shaft 401 of the motor can be coaxially nested within and connected to the cylindrical slots in an interference fit connection or a removable connection.

Further, the coaxial slot 1022 at the first end of the connector 102 is coupled to the rotor shaft 401 of the motor, such as, but not limited to, by an interference fit connection using a temperature differential fit.

In addition, in the embodiment in which the first connection structure (for example, while not limited to, the internal thread structure, the external thread structure, the pin hole, etc.) is provided in the coaxial groove 1022, the shaft end of the rotor shaft 401 of the motor is also preferably provided with a second connection structure, which constitutes a detachable connection structure, such as, but not limited to, a pin connection structure, a thread connection structure, etc.

The coupling assembly 100 and elevator hoist of the present utility model may be used as a new product as well as a service for existing elevator hoists. In particular, for the latter, for example, the worn key teeth at the shaft end of the rotor shaft 401 of the motor in the existing elevator hoist can be worn out to leave the optical axis, the second end of the coupling 101 in the existing elevator hoist is provided with N grooves, and the optical axis worn out by the rotor shaft 401 and the coupling 101 with grooves are assembled and connected by the connecting piece 102 with the structure, so that the coupling 101 and the motor do not need to be replaced, and only the existing coupling 101 and the motor need to be subjected to secondary machining.

In summary, the utility model provides a coupling assembly and an elevator hoist with brand new structures. Compared with the prior elevator hoist, the coupling assembly and the elevator hoist have the advantages that the connecting structure between the motor and the coupling in the elevator hoist is less prone to abrasion, and the maintenance failure rate can be reduced. Further, particularly in the embodiment of the motor and the connecting piece connected in a detachable connection manner, even if the subsequent maintenance and replacement are needed, the maintenance can be realized only by replacing the connecting piece (without replacing the motor and the coupling), compared with the existing lifter hoist structure, the maintenance is more convenient, and the maintenance cost is lower.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present utility model without departing from the spirit and scope of the utility model. Therefore, it is intended that the present utility model cover the modifications and variations of this utility model provided they come within the scope of the appended claims and their equivalents.

Claims (10)

1. A coupling assembly, comprising:

the device comprises a coupler (101), wherein N equally-spaced radial rectangular grooves (1011) are formed in a first port of the coupler (101);

the connecting piece (102) comprises a cylindrical body (1021), a coaxial groove body (1022) which is formed in the first end of the cylindrical body (1021) along the axial direction, and N radial rectangular protrusions (1023) which are at least arranged on the outer surface of the second end side of the cylindrical body (1021) at equal intervals in the circumferential direction, wherein the outer diameter of the cylindrical body (1021) is matched with the inner caliber of the first port of the coupler (101), and the N radial rectangular protrusions (1023) are matched with the structures of the N radial rectangular grooves (1011) so that the second end of the connecting piece (102) can be coaxially clamped into the first port of the coupler (101).

2. The coupling assembly of claim 1, wherein the coaxial slots (1022) are cylindrical slots in shape.

3. The coupling assembly of claim 1, wherein the coaxial slot (1022) has a first connection structure disposed therein, the first connection structure and the second connection structure forming a detachable connection structure.

4. A coupling assembly according to claim 3, wherein the removable connection is a pin connection or a threaded connection.

5. The coupling assembly of claim 1, wherein the coaxial slots (1022) are through-hole slots;

each of the radial rectangular protrusions (1023) is continuously arranged in the axial direction on the outer surface of the cylindrical body (1021).

6. The coupling assembly of claim 1, wherein the second end of the cylindrical body (1021) extends axially outwardly a predetermined length.

7. The coupling assembly of claim 1, wherein the radial rectangular protrusion (1023) has a height equal to a thickness of the first port of the coupling (101).

8. The coupling assembly of claim 7, wherein the top surface of the radial rectangular projection (1023) is an arcuate surface.

9. The coupling assembly of claim 1, wherein N is equal to 4, the radial rectangular protrusion (1023) having a width greater than 1/3 of the outer diameter of the cylindrical body (1021) and less than or equal to the outer diameter of the cylindrical body (1021).

10. An elevator hoist, comprising:

a motor;

a gear box;

a coupling assembly according to any one of claims 1-9, wherein the first end of the connection member (102) is connected to the rotor shaft (401) of the electric machine in an interference fit connection or a detachable connection, the second end of the connection member (102) is coaxially centred snapped into the first port of the coupling (101), the second port of the coupling (101) being connected to the gearbox by means of a bearing.