CN211018604U

CN211018604U - High-speed copper rotor suitable for screw compressor uses

Info

Publication number: CN211018604U
Application number: CN201922391910.8U
Authority: CN
Inventors: 施玲艳
Original assignee: Regal Beloit Suzhou Co Ltd
Current assignee: Regal Beloit Suzhou Co Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-07-14
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a high-speed copper rotor suitable for screw compressor uses, including rotor body, the conducting bar, end links and gland, rotor body comprises a plurality of rotor punching stack, the rotor punching sets up a plurality of conducting bar hole along its edge, conducting bar hole stack forms the conducting bar groove, the conducting bar sets up at the conducting bar inslot, the outside extension in both ends of conducting bar sets up the installation piece, correspond the fixed orifices that the position set up installation piece at the end links, the end links are installed at rotor body both ends, and fixed with the conducting bar, the concave annular groove that establishes of gland, the gland sets up at rotor body both ends, and the end links set up the interference setting in the annular groove. The utility model discloses increase the fixed block at the gib tip, adopt the end links to fix the fixed block, increase end links intensity through the gland, prevent that the rotor from the fracture of welding seam department when high-speed operation, improve the reliability of rotor.

Description

High-speed copper rotor suitable for screw compressor uses

Technical Field

The utility model relates to the field of electric machines, in particular to high-speed copper rotor suitable for screw compressor uses.

Background

Because the cast aluminum rotor has high resistivity, the loss of the motor is large, and the efficiency is low, so that the cast aluminum rotor is usually replaced by the cast copper rotor or the copper rotor inserted with a conducting bar structure at one time, namely, the copper is cast in a guide groove formed by overlapping the rotor punching sheets, so that the loss of a current loop is reduced, and the motor efficiency is further improved. However, the cast copper rotor has the disadvantages of high investment cost of production process equipment and poor stability of the production process, and particularly serious loss of a mold.

SUMMERY OF THE UTILITY MODEL

In view of the defects existing in the prior art, the main object of the present invention is to overcome the defects of the prior art, and to disclose a high-speed copper rotor suitable for a screw compressor, which comprises a rotor body, guide bars, an end ring and a gland, wherein the rotor body is formed by overlapping a plurality of rotor punching sheets, the rotor punching sheets are provided with a plurality of guide bar holes along the edges thereof, the guide bar holes are overlapped to form guide bar grooves, the guide bars are arranged in the guide bar grooves, the two ends of the guide bars are outwardly extended to be provided with mounting blocks, fixing holes for mounting the mounting blocks are arranged at the corresponding positions of the end ring, and the end ring is mounted at the two ends of the rotor body and is fixed with the guide bars; the end ring and the guide bar can be fixed in a welding mode. The gland is concavely provided with an annular groove, the gland is arranged at two ends of the rotor body, and the end rings are in interference fit in the annular groove.

Furthermore, the guide strip hole is in a water drop shape, and the thin end faces to the circle center of the rotor punching sheet.

Furthermore, the outer side surface of the mounting block is a first plane perpendicular to the radial direction, a second plane is arranged on the fixing hole, and the first plane and the second plane are in clearance fit and are fixed through welding during mounting.

Further, the mounting block is welded and fixed with the fixing hole.

Further, the shape of the guide bar is the same as that of the guide bar groove.

Further, after installation, the gap between the first plane and the second plane is 0.5-0.8 mm.

Further, the lead bars and the end rings are made of copper.

The utility model discloses the beneficial effect who gains:

the utility model discloses increase the fixed block at the gib tip, adopt the end links to fix the fixed block, increase end links intensity through the gland, prevent that the rotor from the fracture of welding seam department when high-speed operation, improve the reliability of rotor.

Drawings

Fig. 1 is a schematic structural view of a high-speed copper rotor for a screw compressor according to the present invention;

fig. 2 is a cross-sectional view of a high speed copper rotor suitable for use in a screw compressor in accordance with the present invention;

fig. 3 is a schematic view of an end structure of a high-speed copper rotor for a screw compressor according to the present invention;

FIG. 4 is a schematic structural diagram of a conducting bar;

FIG. 5 is a schematic structural view of an end ring;

FIG. 6 is a schematic structural view of a rotor sheet;

FIG. 7 is a schematic structural view of the gland;

the reference numbers are as follows:

1. rotor body, 2, conducting bar, 3, end ring, 4, gland, 11, rotor punching sheet, 12, conducting bar groove, 21, installation block, 31, fixed orifices, 41, annular groove, 111, conducting bar hole, 211, first plane, 311, second plane.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The utility model provides a high-speed copper rotor suitable for screw compressor is used, as shown in fig. 1-7, including rotor body 1, conducting bar 2, end ring 3 and gland 4, rotor body 1 comprises the stack of a plurality of rotor punching 11, rotor punching 11 sets up a plurality of conducting bar hole 111 along its edge, conducting bar hole 11 superposes and forms conducting bar groove 12, the shape of conducting bar 2 is the same with the shape of conducting bar groove 12, therefore, setting that conducting bar 2 can match is in conducting bar groove 12, the both ends of conducting bar 2 outwards extend and set up installation piece 21, end ring 3 sets up a plurality of fixed orifices 31 that match with installation piece 21 along its edge, end ring 3 sets up the both ends at rotor body 1, and installation piece 21 inserts in fixed orifices 31, connect installation piece 21 and fixed orifices 31 through the welded mode. The ring groove 41 is concavely arranged on the surface of the gland 4, the gland 4 is arranged at two ends of the rotor body 1, and the end ring 3 is arranged in the ring groove 41 in an interference manner, so that the strength of the end ring 3 is increased, and the welding seam of the rotor is prevented from cracking when the rotor runs at high speed. Wherein the conducting bars 2 and the end rings 3 are made of copper.

In one embodiment, as shown in fig. 1-7, the bar hole 11 is in the shape of a drop, and the thin end faces the center of the rotor sheet.

In one embodiment, as shown in fig. 1 to 7, the outer side surface of the mounting block 21 is a first plane 211, and after the mounting block 21 is mounted on the end ring 3, the first plane 211 is perpendicular to the end ring 3 in the radial direction. The fixing hole 31 is provided with a second plane 311, and when the fixing hole is installed, the first plane 211 is in clearance fit with the second plane 311. After the mounting block 21 and the end ring 3 are mounted, the mounting block is fixed in a welding mode; the welding liquid flows into the gap, and the mounting block 21 and the end ring 3 can be fixed better.

In one embodiment, as shown in fig. 1-7, after the conductive bar 2 is installed, the first plane 211 and the second plane 311 are spaced apart by 0.5-0.8mm, so that the fixing block 21 and the installation hole 31 are closely fitted to each other, thereby facilitating the inflow of the solder from the gap. The gland 4 and the end ring 3 are in interference fit, so that the strength of the rotor is increased.

In the above embodiment, as shown in fig. 1 to 7, when the rotor is rotated at a high speed, centrifugal force of the guide bars 2 toward the outside acts on the end ring 3, and the end ring 3 is strengthened by the gland 4, thereby further improving the reliability of the rotor.

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; the scope of the appended claims should be accorded the broadest interpretation so as to encompass all such modifications and equivalent arrangements as is within the spirit and scope of the present invention.

Claims

1. The utility model provides a high-speed copper rotor suitable for screw compressor uses, its characterized in that includes rotor body, gib, end ring and gland, rotor body comprises a plurality of rotor punching stack, the rotor punching sets up a plurality of gib hole along its edge, gib hole stack forms the gib groove, the gib sets up in the gib inslot, the outside extension in both ends of gib sets up the installation piece the end ring corresponds the position and sets up the installation the fixed orifices of installation piece, the end ring is installed rotor body both ends, and with the gib is fixed, the annular groove is established to the gland recess, the gland sets up rotor body both ends, and the end ring interference sets up in the annular groove.

2. The high-speed copper rotor suitable for the screw compressor as claimed in claim 1, wherein the guide bar hole is in a drop shape, and a thin end of the guide bar hole faces to a circle center of the rotor punching sheet.

3. The high-speed copper rotor suitable for the screw compressor is characterized in that the outer side surface of the mounting block is a first plane perpendicular to the radial direction, a second plane is arranged on the fixing hole, and the first plane and the second plane are in clearance fit and are fixed through welding when the high-speed copper rotor is mounted.

4. The high-speed copper rotor for a screw compressor of claim 1, wherein said mounting block is welded to said fixing hole.

5. A high speed copper rotor adapted for use in a screw compressor as claimed in claim 1 wherein said bar is the same shape as said bar groove.

6. A high speed copper rotor suitable for use in a screw compressor as claimed in claim 3 wherein the clearance between said first plane and said second plane is 0.5-0.8mm when installed.

7. A high speed copper rotor suitable for use in a screw compressor as claimed in claim 1 wherein said bars and said end rings are made of copper.