CN211791113U

CN211791113U - Direct-connected motor

Info

Publication number: CN211791113U
Application number: CN202020290427.0U
Authority: CN
Inventors: 姚松保; 蔡荣辉; 戴更强
Original assignee: Zhejiang Nanyuan Pump Industry Co ltd
Current assignee: Zhejiang Nanyuan Pump Industry Co ltd
Priority date: 2020-03-10
Filing date: 2020-03-10
Publication date: 2020-10-27
Anticipated expiration: 2030-03-10

Abstract

The utility model discloses a directly link motor, include the motor, install the motor shaft on the motor to and the pump shaft, the outer end of motor shaft is equipped with first scarf and the first screw thread coaxial with the motor shaft, second scarf and second screw thread have been seted up to the pump shaft in the one end that is connected with the motor shaft, second scarf and second screw thread and the coaxial setting of pump shaft, second scarf and first scarf phase-match, second screw thread and first screw thread phase-match. The utility model discloses an adopt screw thread and wedge face to realize fixing between motor shaft and the pump shaft, replace traditional friction welding fixed mode, the axle extension can be adjusted wantonly, and the commonality is good, and the cooperation of screw thread and wedge face is used, has realized the auto-lock fastening.

Description

Direct-connected motor

Technical Field

The utility model relates to a directly link motor.

Background

At present, direct-connected motors are numerous in the market, and a motor shaft and a pump shaft of the direct-connected motors are usually friction-welded, so that the direct-connected motor has the advantages of compact structure, lower cost than that of a common split type, and obvious defects: the manufacturing cycle is long, and the shaft extension size of one motor is a fixed value and cannot be replaced, so that the universality is poor.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a directly link motor adopts screw thread and wedge face to realize fixing between motor shaft and the pump shaft, replaces traditional friction welding fixed mode, and the axle is stretched and can be adjusted wantonly, and the commonality is good, has effectively solved the problem of pointing out among the background art.

The utility model adopts the technical proposal that:

the utility model provides a directly link motor, includes the motor, installs the motor shaft on the motor to and the pump shaft, the outer end of motor shaft is equipped with first scarf and the first screw thread coaxial with the motor shaft, second scarf and second screw thread have been seted up to the pump shaft in the one end that is connected with the motor shaft, second scarf and second screw thread and the coaxial setting of pump shaft, second scarf and first scarf phase-match, second screw thread and first screw thread phase-match.

Preferably, the first wedge surface and the second wedge surface are locked with each other when the first thread and the second thread are screwed.

Preferably, the first and second threads rotate in a direction opposite to a direction of rotation of the motor shaft when tightened.

Preferably, the first wedge surface is a tapered surface coaxial with the first screw, and the second wedge surface is a tapered surface coaxial with the second screw.

Preferably, the first thread is an internal thread formed at the outer end of the motor shaft, the first wedge surface is an internal conical surface formed at the outer end of the motor shaft, the first wedge surface and the first thread are sequentially distributed from the outer end of the motor shaft to the inner end, the second thread is an external thread formed at one end, connected with the motor shaft, of the pump shaft, and the second wedge surface is an external conical surface formed at one end, connected with the motor shaft, of the pump shaft.

Preferably, the first thread is an external thread arranged at the outer end of the motor shaft, the first wedge surface is an external conical surface arranged at the outer end of the motor shaft, the first thread and the first wedge surface are sequentially distributed from the outer end of the motor shaft to the inner end, the second thread is an internal thread arranged at one end, connected with the motor shaft, of the pump shaft, and the second wedge surface is an internal conical surface arranged at one end, connected with the motor shaft, of the pump shaft.

The utility model has the advantages that:

1. the fixing between the motor shaft and the pump shaft is realized by adopting the threads and the wedge surfaces, the traditional friction welding fixing mode is replaced, the shaft extension can be adjusted at will, the universality is good, and the self-locking fastening is realized by matching the threads and the wedge surfaces;

2. in the process of screwing the pump shaft, friction force is generated between the first wedge surface and the second wedge surface to generate a self-tightening effect, the locking of the motor shaft and the pump shaft is realized, the rotation direction of the screwing pump shaft is opposite to the rotation direction of the motor shaft when the motor operates, and in the process of operating the motor, looseness cannot be generated between the pump shaft and the motor shaft and only the pump shaft can be tightened more and more.

Drawings

FIG. 1 is a schematic view of a split structure of embodiment 1;

FIG. 2 is a schematic view of the combined structure of embodiment 1;

FIG. 3 is a schematic view of a split structure of embodiment 2;

fig. 4 is a schematic view of the combined structure of embodiment 2.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description of specific embodiments thereof, which is illustrated in the accompanying drawings.

Example 1

As shown in fig. 1 and 2, a direct connection motor comprises a motor 1, a motor shaft 2 installed on the motor 1, and a pump shaft 3, wherein the outer end of the motor shaft 2 is provided with a first wedge surface 21 and a first thread 22 which are coaxial with the motor shaft 2, the pump shaft 3 is provided with a second wedge surface 31 and a second thread 32 at one end connected with the motor shaft 2, the second wedge surface 31 and the second thread 32 are coaxially arranged with the pump shaft 3, the second wedge surface 31 is matched with the first wedge surface 21, and the second thread 32 is matched with the first thread 22.

When the first thread 22 and the second thread 32 are screwed, the first wedge surface 21 and the second wedge surface 31 are locked with each other.

The first thread 22 and the second thread 32 rotate in the opposite direction to the rotation of the motor shaft 2 when they are tightened.

The first wedge surface 21 is a conical surface coaxial with the first thread 22, and the second wedge surface 31 is a conical surface coaxial with the second thread 32.

First screw thread 22 for offer the internal thread in motor shaft 2 outer end, first wedge 21 for offer the interior conical surface in motor shaft 2 outer end, just first wedge 21 and first screw thread 22 distribute in proper order by the inside end in motor shaft outer end, second screw thread 32 for offer the external screw thread that is connected one end at pump shaft 3 and motor shaft 2, second wedge 31 for offer the external cone face that is connected one end at pump shaft 3 and motor shaft 2.

In this embodiment, the motor shaft 2 and the pump shaft 3 are made of stainless steel, so that the fixing strength between the motor shaft 2 and the pump shaft 3 can be improved, and meanwhile, the corrosion resistance of the first wedge surface 21, the first thread 22, the second wedge surface 31 and the second thread 32 is improved, and the motor shaft 2 and the pump shaft 3 are prevented from being fixed and loosened after long-term use.

Example 2

As shown in fig. 3 and 4, a direct connection motor comprises a motor 1, a motor shaft 2 installed on the motor 1, and a pump shaft 3, wherein the outer end of the motor shaft 2 is provided with a first wedge surface 21 and a first thread 22 which are coaxial with the motor shaft 2, the pump shaft 3 is provided with a second wedge surface 31 and a second thread 32 at one end connected with the motor shaft 2, the second wedge surface 31 and the second thread 32 are coaxially arranged with the pump shaft 3, the second wedge surface 31 is matched with the first wedge surface 21, and the second thread 32 is matched with the first thread 22.

First screw thread 22 for offer the external screw thread in motor shaft 2 outer end, first wedge 21 for offer the outer conical surface in motor shaft 2 outer end, just first screw thread 22 and first wedge 21 distribute in proper order by the inside end in motor shaft outer end, second screw thread 32 for offer the internal thread in the one end that is connected with motor shaft 2 at pump shaft 3, second wedge 31 for offer the internal conical surface in the one end that is connected with motor shaft 2 at pump shaft 3.

Although the above embodiments have been described in detail, these descriptions are only illustrative, not limiting, and any inventions that do not exceed the spirit of the present invention are all within the scope of the present invention.

Claims

1. The utility model provides a directly link motor, its characterized in that includes motor (1), installs motor shaft (2) on motor (1) to and pump shaft (3), the outer end of motor shaft (2) is equipped with first scarf (21) and first screw thread (22) coaxial with motor shaft (2), second scarf (31) and second screw thread (32) have been seted up in pump shaft (3) the one end that is connected with motor shaft (2), second scarf (31) and second screw thread (32) and the coaxial setting of pump shaft (3), second scarf (31) and first scarf (21) phase-match, second screw thread (32) and first screw thread (22) phase-match.

2. A direct connection electric machine according to claim 1, characterized in that said first wedge surface (21) and said second wedge surface (31) are interlocked when said first thread (22) and said second thread (32) are tightened.

3. A direct connection motor according to claim 1, characterized in that the first thread (22) and the second thread (32) rotate in the opposite direction to the rotation of the motor shaft (2) when tightened.

4. A direct connection machine according to claim 1, characterized in that said first wedge surface (21) is a conical surface coaxial with said first thread (22) and said second wedge surface (31) is a conical surface coaxial with said second thread (32).

5. The direct connection motor of claim 1, 2, 3 or 4, wherein the first thread (22) is an internal thread formed at the outer end of the motor shaft (2), the first wedge surface (21) is an internal conical surface formed at the outer end of the motor shaft (2), the first wedge surface (21) and the first thread (22) are sequentially distributed from the outer end to the inner end of the motor shaft, the second thread (32) is an external thread formed at one end of the pump shaft (3) connected with the motor shaft (2), and the second wedge surface (31) is an external conical surface formed at one end of the pump shaft (3) connected with the motor shaft (2).

6. The direct connection motor of claim 1, 2, 3 or 4, characterized in that the first thread (22) is an external thread provided at the outer end of the motor shaft (2), the first wedge surface (21) is an external conical surface provided at the outer end of the motor shaft (2), the first thread (22) and the first wedge surface (21) are sequentially distributed from the outer end to the inner end of the motor shaft, the second thread (32) is an internal thread provided at one end of the pump shaft (3) connected with the motor shaft (2), and the second wedge surface (31) is an internal conical surface provided at one end of the pump shaft (3) connected with the motor shaft (2).