阅读说明：本技术 一种空压机及其螺杆与电机转子的连接结构 (Air compressor and connection structure of screw rod and electric motor rotor thereof ) 是由 钟仁志 袁军 杨国富 于 2021-08-03 设计创作，主要内容包括：本发明涉及空压机领域,尤其是一种空压机及其螺杆与电机转子的连接结构,包括空压机螺杆、电机转子套、电机转子和电机转子压盖；空压机螺杆的一端设置有圆台形的第一连接部,且该圆台的顶面位于空压机螺杆的端部；电机转子套的内侧设置有第一连接孔和第二连接孔,第一连接孔位于靠近第一连接部的那端,第一连接孔的形状与第一连接部匹配,电机转子套通过第一连接孔与第一连接部相连；电机转子套的外侧面上设置有定位凸缘,电机转子的一端通过定位凸缘设置电机转子套上,电机转子的另一端设置有电机转子压盖,电机转子压盖上设置有按压部,按压部压在电机转子的端面上。本专利连接部与电机转子套之间为锥形连接,便于这两者的组装和拆卸。(The invention relates to the field of air compressors, in particular to an air compressor and a connecting structure of a screw rod and a motor rotor of the air compressor, which comprises an air compressor screw rod, a motor rotor sleeve, a motor rotor and a motor rotor gland; one end of the air compressor screw is provided with a first connecting part in a circular truncated cone shape, and the top surface of the circular truncated cone is positioned at the end part of the air compressor screw; the inner side of the motor rotor sleeve is provided with a first connecting hole and a second connecting hole, the first connecting hole is positioned at the end close to the first connecting part, the shape of the first connecting hole is matched with that of the first connecting part, and the motor rotor sleeve is connected with the first connecting part through the first connecting hole; be provided with the location flange on the lateral surface of motor rotor cover, motor rotor's one end sets up motor rotor through the location flange and sheathes in, motor rotor's the other end is provided with motor rotor gland, is provided with on the motor rotor gland and presses the splenium, presses splenium pressure on motor rotor's terminal surface. For the toper between this patent connecting portion and the motor rotor cover is connected, be convenient for these assembly and dismantlement between them.)

1. A connecting structure of a screw rod and a motor rotor of an air compressor is characterized by comprising an air compressor screw rod (1), a motor rotor sleeve (2), a motor rotor (3) and a motor rotor gland (4); one end of the air compressor screw rod (1) is provided with a first connecting part (11) in a circular truncated cone shape, and the top surface of the circular truncated cone is positioned at the end part of the air compressor screw rod (1); a first connecting hole (21) and a second connecting hole (22) are formed in the inner side of the motor rotor sleeve (2), wherein the first connecting hole (21) is located at the end close to the first connecting part (11), the shape of the first connecting hole (21) is matched with that of the first connecting part (11), and the motor rotor sleeve (2) is connected with the first connecting part (11) through the first connecting hole (21); the second connecting hole (22) is positioned at the end far away from the first connecting part (11); the motor rotor cover comprises a motor rotor sleeve (2), and is characterized in that a positioning flange (23) is arranged on the outer side surface of the motor rotor sleeve (2), one end of the motor rotor (3) is arranged on the motor rotor sleeve (2) through the positioning flange (23), a motor rotor gland (4) is arranged at the other end of the motor rotor (3), a pressing part (41) is arranged on the motor rotor gland (4), the pressing part (41) is pressed on the end surface of the motor rotor (3), and the motor rotor (3) is axially limited on the motor rotor sleeve (2).

2. The connection structure of the screw rod and the motor rotor of the air compressor according to claim 1, wherein a through hole (42) is formed in the middle of the motor rotor gland (4), a threaded hole (111) coaxial with the through hole (42) is formed in the end of the first connection portion (11), and the screw (5) penetrates through the through hole (42) to be connected with the threaded hole (111).

3. The connection structure of the screw rod and the motor rotor of the air compressor according to claim 2, wherein the motor rotor gland (4) is provided with a second connection portion (43), and the second connection portion (43) is in threaded connection with the second connection hole (22).

4. The connection structure of the screw rod and the motor rotor of the air compressor according to claim 1, wherein the motor rotor gland (4) is provided with a second connection portion (43), and the second connection portion (43) is in threaded connection with the second connection hole (22).

5. The connection structure of the screw and the motor rotor of the air compressor according to claim 1, wherein the first connection portion (11) is connected with the motor rotor sleeve (2) through a key; the motor rotor sleeve (2) is connected with the motor rotor (3) through a key.

6. The structure for connecting the screw of the air compressor to the rotor of the motor according to claim 1, wherein the positioning flange (23) is annular.

7. The structure for connecting the screw of the air compressor to the rotor of the motor according to claim 1, wherein the pressing portion (41) is annular.

8. The structure for connecting a screw rod and a motor rotor of an air compressor according to claim 1, wherein a groove (211) is formed in the middle of the inner side of the connecting hole (21).

9. The structure for connecting the screw of the air compressor to the rotor of the motor according to claim 8, wherein the taper at the groove (211) is identical to that of the connecting hole (21).

10. An air compressor, characterized in that, the air compressor adopts a connection structure of a screw rod and a motor rotor of the air compressor of any one of claims 1 to 9.

Technical Field

The invention relates to the field of air compressors, in particular to an air compressor and a connecting structure of a screw rod and a motor rotor of the air compressor.

Background

In traditional air compressor machine, be connected through electric motor rotor straight handle cover between screw rod axle and the electric motor rotor, and screw rod axle diameter is greater than the aperture of electric motor rotor straight handle cover, and screw rod rotor axle and electric motor rotor straight handle cover are interference fit, and this cooperation requires that dimensional tolerance required precision requires highly. And the interference fit results in after-market maintenance difficulties. For example, when the motor rotor is to be replaced, the straight handle sleeve of the motor rotor is difficult to disassemble.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide an air compressor and a connection structure of a screw and a motor rotor thereof, in which a connection portion between a screw shaft and a motor rotor housing is changed into a circular truncated cone shape, so as to facilitate mounting, dismounting, and mounting between the screw shaft and the motor rotor housing.

For the purpose of the invention, the following technical scheme is adopted for implementation:

a connecting structure of a screw rod and a motor rotor of an air compressor comprises an air compressor screw rod, a motor rotor sleeve, a motor rotor and a motor rotor gland; one end of the air compressor screw is provided with a first connecting part in a circular truncated cone shape, and the top surface of the circular truncated cone is positioned at the end part of the air compressor screw; the inner side of the motor rotor sleeve is provided with a first connecting hole and a second connecting hole, wherein the first connecting hole is positioned at the end close to the first connecting part, the shape of the first connecting hole is matched with that of the first connecting part, and the motor rotor sleeve is connected with the first connecting part through the first connecting hole; the second connecting hole is positioned at the end far away from the first connecting part; be provided with the location flange on the lateral surface of motor rotor cover, motor rotor's one end sets up motor rotor and sheathes in through the location flange, and motor rotor's the other end is provided with motor rotor gland, is provided with on the motor rotor gland and presses the splenium, presses splenium pressure to press on motor rotor's terminal surface, with motor rotor axial spacing on motor rotor sheathes in.

Preferably, the middle part of the motor rotor gland is provided with a through hole, the end part of the first connecting part is provided with a threaded hole coaxial with the through hole, and a screw penetrates through the through hole and is connected with the threaded hole.

Preferably, the motor rotor gland is provided with a second connecting part, and the second connecting part is in threaded connection with the second connecting hole.

Preferably, the motor rotor gland is provided with a second connecting part, and the second connecting part is in threaded connection with the second connecting hole.

Preferably, the first connecting part is in key connection with the motor rotor sleeve; the motor rotor sleeve is connected with the motor rotor through a key.

Preferably, the locating flange is annular.

Preferably, the pressing portion is annular.

Preferably, the middle part of the inner side of the connecting hole is provided with a groove.

Preferably, the taper of the groove is consistent with that of the connecting hole.

The utility model provides an air compressor machine, this air compressor machine adopts foretell screw rod and electric motor rotor's of an air compressor machine connection structure.

In summary, the invention has the advantages that the connection part and the motor rotor sleeve are in conical connection, and the automatic centering of the connection part and the motor rotor sleeve is convenient during assembly. The air compressor screw, the motor rotor sleeve and the motor rotor gland are detachably connected, and the disassembly mode is simple and convenient, so that after-sale maintenance is facilitated.

Drawings

Fig. 1 is a sectional view of an upper structure of an air compressor.

Fig. 2 is a sectional view of a motor rotor bushing.

Fig. 3 is a cross-sectional view of another construction of a motor rotor bushing.

Fig. 4 is a cross-sectional view of a motor rotor gland.

Detailed Description

Example 1: as shown in fig. 1 and 2, a connection structure of a screw rod and a motor rotor of an air compressor comprises an air compressor screw rod 1, a motor rotor sleeve 2, a motor rotor 3 and a motor rotor gland 4.

The right end of the air compressor screw rod 1 is provided with a first connecting part 11 in the shape of a circular truncated cone, and the top surface of the circular truncated cone is positioned at the right side end part of the air compressor screw rod 1. The inside of the motor rotor housing 2 is provided with a first connection hole 21 and a second connection hole 22 which communicate with each other, wherein the first connection hole 21 is located at the end close to the first connection portion 11, the shape of the first connection hole 21 is matched with the first connection portion 11, and the motor rotor housing 2 is connected with the first connection portion 11 through the first connection hole 21. The second connection hole 22 is located at an end remote from the first connection portion 11. Preferably, the first connecting portion 11 is detachably connected to the motor rotor sleeve 2 by a key connection or the like, so that the first connecting portion 11 and the motor rotor sleeve 2 rotate coaxially.

The outer side of the motor rotor sleeve 2 is provided with a positioning flange 23, preferably the positioning flange 23 is ring-shaped. The left end of motor rotor 3 sets up motor rotor cover 2 through location flange 23 on, preferably, can dismantle through key-type connection etc. between motor rotor cover 2 and the motor rotor 3 and be connected for motor rotor cover 2 rotates with motor rotor 3 is coaxial.

The right end of the motor rotor 3 is provided with a motor rotor gland 4, and the motor rotor gland 4 is provided with a pressing part 41, preferably, the pressing part 41 is annular. The pressing part 41 presses on the end face of the motor rotor 3 to axially limit the motor rotor 3 on the motor rotor sleeve 2.

Example 2: as shown in fig. 1 and 4, on the basis of embodiment 1, the motor rotor gland 4 is provided with a through hole 42 in the middle, the end of the first connecting portion 11 is provided with a threaded hole 111 coaxial with the through hole 42, and the screw 5 passes through the through hole 42 and is connected with the threaded hole 111.

Example 3: as shown in fig. 1 and 4, in addition to embodiment 2, the motor rotor cover 4 is further provided with a second connecting portion 43, and the second connecting portion 43 is connected with the second connecting hole 22 by a screw thread.

Example 4: as shown in fig. 1 and 4, in embodiment 1, the motor rotor cover 4 is provided with a second connecting portion 43, and the second connecting portion 43 is connected with the second connecting hole 22 by a screw.

Example 5: as shown in fig. 1 and 3, on the basis of embodiment 1, a groove 211 is provided in the middle of the inner side of the connection hole 21, and the taper of the groove 211 is identical to that of the connection hole 21, so as to facilitate the installation and removal of the connection part 11.

The utility model provides an air compressor machine, this air compressor machine adopts above-mentioned screw rod and electric motor rotor's of air compressor machine connection structure.

The advantage of the above structure is that the connection part 11 and the motor rotor sleeve 2 are connected in a conical shape, which facilitates the automatic centering of the two parts during assembly. The air compressor screw 1, the motor rotor sleeve 2 and the motor rotor gland 4 are detachably connected, and the disassembly mode is simple and convenient, so that after-sale maintenance is facilitated.