CN211859843U

CN211859843U - Automatic reversing device for motor

Info

Publication number: CN211859843U
Application number: CN202020812713.9U
Authority: CN
Inventors: 张建文; 肖静
Original assignee: East China Institute of Technology
Current assignee: East China Institute of Technology
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2020-11-03
Anticipated expiration: 2030-05-15

Abstract

The utility model discloses a motor automatic reversing arrangement, including drain pan, upper cover, fastening bolt, carousel, rotation motor, first bearing, inner chamber, rotation gear, mounting groove, internal rotation seat, spacing groove, first rack, second bearing and transmission pivot. The utility model has the advantages that: the groove formed in the top end of the rotating shaft of the rotating motor is aligned to the limiting groove on one side of the mounting groove, the positioning pins are inserted in the limiting groove and the groove, the rotating disc and the rotating motor can be positioned and mounted, the rotating disc can be ensured to rotate synchronously along with the rotating shaft of the rotating motor, the first rack and the second rack are semicircular arc-shaped racks, the first rack and the second rack are arranged in opposite directions, the first rack and the second rack are sequentially meshed with the rotating gear to be connected with each other along with the rotation of the rotating disc, and further the rotating gear can be driven to rotate positively or reversely, the rotating gear, lubricating oil is coated on the first rack and the second rack, and the wearing of meshing between the gears is reduced.

Description

Automatic reversing device for motor

Technical Field

The utility model relates to a switching-over device specifically is a motor automatic switching-over device, belongs to motor drive technical field.

Background

When using the motor to carry out the transmission, to some mechanisms that need reciprocating motion, often need the motor to carry out corotation or reversal, need the motor promptly to turn to automatically, and to current automatic commutation motor, adopt alternating current motor mostly, in order to realize corotation or reversal of motor through the flow direction that changes the electric current, drive the switching-over of motor promptly, but when frequently changing alternating current motor direction of rotation on the one hand, alternating current motor frequently changes the direction of rotation and can lead to the temperature rise of self very high, the extreme condition still can burn out the motor, on the other hand, still need the positive negative pole of manual change electric current, do not realize full automatic switching-over.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a motor automatic reversing arrangement for solving above-mentioned problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose: an automatic reversing device of a motor comprises a bottom shell, an upper cover, a fastening bolt, a rotary disc, a rotary motor, a first bearing, an inner cavity, a rotary gear, a mounting groove, an inner rotary seat, a limiting groove, a first rack, a second bearing and a transmission rotary shaft; the bottom shell and the upper cover form a shell structure of the reversing device, the upper cover is placed above the bottom shell, the upper cover is fixedly connected with the bottom shell through a fastening bolt, the rotary disc is arranged in the bottom shell, the rotary motor is arranged below the bottom shell and is electrically connected with an external power supply, an inner cavity is formed in the rotary disc, an inner rotary seat is arranged at the center of the inner cavity of the rotary disc, an installation groove is formed in the center of the inner rotary seat, a limit groove is arranged on one side of the installation groove, a rotary shaft of the rotary motor penetrates through a through hole formed in the bottom shell and is inserted into the installation groove formed in the center of the inner rotary seat, a first bearing is arranged in a through hole between the rotary shaft of the rotary motor and the bottom shell, the first rack is fixedly arranged on the outer side wall of the inner rotary seat, and the second rack is fixedly arranged on the inner side wall of the, the rotating gear is arranged in the inner cavity of the turntable and is positioned on one side of the inner rotating seat, one end of the transmission rotating shaft is arranged above the upper cover, and the other end of the transmission rotating shaft penetrates through a through hole formed in the upper cover and is fixedly connected with the rotating gear.

Preferably, in order to improve the sealing property and the firmness of the connection between the bottom shell and the upper cover, a rubber gasket is arranged at the joint between the bottom shell and the upper cover, and the fastening bolts respectively penetrate through the four through holes formed in the outer side edge of the upper cover to be in threaded connection with the bottom shell.

Preferably, in order to enable the turntable and the rotating motor to be positioned and installed, the groove formed in the top end of the rotating shaft of the rotating motor is aligned to the limiting groove on one side of the installation groove, and the limiting groove and the groove are internally provided with positioning pins.

Preferably, in order to drive the rotating gear to rotate forwards or backwards to realize automatic reversing, the first rack and the second rack are both semi-arc-shaped racks, and the first rack and the second rack are arranged in opposite directions.

Preferably, in order to reduce the wear of the engagement between the gears, the rotating gear, the first rack and the second rack are coated with lubricating oil.

The utility model has the advantages that: the automatic reversing device of the motor has reasonable design, the connecting part between the bottom shell and the upper cover is provided with a rubber gasket, and a fastening bolt respectively passes through four through holes arranged at the outer side edge of the upper cover to be in threaded connection with the bottom shell, thereby improving the tightness and firmness of the connection between the bottom shell and the upper cover, and simultaneously being convenient for disassembly and assembly, a groove arranged at the top end of a rotating shaft of the rotating motor is aligned with a limiting groove at one side of a mounting groove, and a positioning pin is inserted in the limiting groove and the groove, so that a turntable and the rotating motor can be positioned and mounted, further the turntable can be ensured to synchronously rotate along with the rotating shaft of the rotating motor, the first rack and the second rack are both semi-arc racks, and the first rack and the second rack are oppositely arranged, along with the rotation of the turntable, the first rack and the second rack are sequentially in meshed connection with the rotating gear, further the rotating, lubricating oil is coated on the rotating gear, the first rack and the second rack, so that the meshed abrasion among the gears is reduced, and the rotating flexibility is improved.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

fig. 2 is a schematic top view of the bottom case of the present invention;

FIG. 3 is a schematic view of a three-dimensional structure of the bottom case of the present invention;

fig. 4 is a schematic view of the connection structure of the bottom case and the upper cover of the present invention.

In the figure: 1. bottom shell, 2, upper cover, 3, fastening bolt, 4, carousel, 5, rotation motor, 6, first bearing, 7, inner chamber, 8, rotation gear, 9, mounting groove, 10, internal rotation seat, 11, spacing groove, 12, first rack, 13, second rack, 14, second bearing and 15, transmission pivot.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, an automatic motor reversing device includes a bottom case 1, an upper cover 2, a fastening bolt 3, a turntable 4, a rotating motor 5, a first bearing 6, an inner cavity 7, a rotating gear 8, an installation groove 9, a rotating base 10, a limiting groove 11, a first rack 12, a second rack 13, a second bearing 14, and a transmission shaft 15; the bottom shell 1 and the upper cover 2 form a shell structure of the reversing device, the upper cover 2 is placed above the bottom shell 1, the upper cover 2 and the bottom shell 1 are fixedly connected through a fastening bolt 3, the rotary table 4 is placed in the bottom shell 1, the rotary motor 5 is arranged below the bottom shell 1, an inner cavity 7 is formed in the rotary table 4, an inner rotary seat 10 is arranged at the center of the inner cavity 7 of the rotary table 4, an installation groove 9 is formed in the center of the inner rotary seat 10, a limit groove 11 is formed in one side of the installation groove 9, a rotary shaft of the rotary motor 5 penetrates through a through hole formed in the bottom shell 1 and is inserted into the installation groove 9 formed in the center of the inner rotary seat 10, a first bearing 6 is arranged in the through hole between the rotary shaft of the rotary motor 5 and the bottom shell 1, the rotary motor 5 is electrically connected with an external power supply, and a first rack 12 is fixedly arranged on the outer side wall of the inner rotary seat 10, the second rack 13 is fixedly arranged on the inner side wall of the rotary table 4, the rotating gear 8 is arranged in the inner cavity 7 of the rotary table 4, the rotating gear 8 is positioned on one side of the inner rotating seat 10, one end of the transmission rotating shaft 15 is arranged above the upper cover 2, and the other end of the transmission rotating shaft 15 penetrates through a through hole formed in the upper cover 2 and is fixedly connected with the rotating gear 8.

The connection part between the bottom shell 1 and the upper cover 2 is provided with a rubber gasket, and the fastening bolts 3 respectively pass through four through holes arranged on the outer side edge of the upper cover 2 to be in threaded connection with the bottom shell 1, so that the sealing property and firmness of the connection between the bottom shell 1 and the upper cover 2 are improved, and the connection is also convenient to disassemble and assemble, the groove arranged at the top end of the rotating shaft of the rotating motor 5 is aligned with the limiting groove 11 on one side of the mounting groove 9, and a positioning pin is inserted in the limiting groove 11 and the groove, so that the rotating disk 4 and the rotating motor 5 can be positioned and mounted, further the rotating disk 4 can be ensured to synchronously rotate along with the rotating shaft of the rotating motor 5, the first rack 12 and the second rack 13 are both semi-circular arc racks, and the first rack 12 and the second rack 13 are arranged oppositely, along with the rotation of the rotating disk 4, the first rack 12 and the second rack 13 are sequentially in meshed connection with the, so as to realize automatic reversing, lubricating oil is coated on the rotating gear 8, the first rack 12 and the second rack 13, so that the meshed abrasion among the gears is reduced, and the flexibility of rotation can be improved.

The working principle is as follows: when the motor automatic reversing device is used, the rotating motor 5 rotates after being powered on, and then the rotating disc 4 is driven to rotate, when the rotating gear 8 is meshed with the first rack 12, along with the rotation of the rotating disc 4, the rotating gear 8 rotates in the reverse direction, and when the rotating gear 8 is meshed with the second rack 13, along with the rotation of the rotating disc 4, the rotating gear 8 rotates in the same direction, so that the forward rotation and the reverse rotation of the rotating gear 8 can be realized, and the transmission rotating shaft 15 can be driven to automatically reverse.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a motor automatic reversing arrangement which characterized in that: the device comprises a bottom shell (1), an upper cover (2), a fastening bolt (3), a rotary table (4), a rotary motor (5), a first bearing (6), an inner cavity (7), a rotary gear (8), a mounting groove (9), a rotary seat (10), a limiting groove (11), a first rack (12), a second rack (13), a second bearing (14) and a transmission rotating shaft (15); the reversing device is characterized in that the bottom shell (1) and the upper cover (2) form a shell structure of the reversing device, the upper cover (2) is placed above the bottom shell (1), the upper cover (2) is fixedly connected with the bottom shell (1) through a fastening bolt (3), the turntable (4) is arranged in the bottom shell (1), the rotating motor (5) is arranged below the bottom shell (1), the rotating motor (5) is electrically connected with an external power supply, an inner cavity (7) is formed in the turntable (4), an inner rotating seat (10) is arranged at the center of the inner cavity (7) of the turntable (4), an installation groove (9) is formed at the center of the inner rotating seat (10), a limit groove (11) is formed in one side of the installation groove (9), and a rotating shaft of the rotating motor (5) penetrates through a through hole formed in the bottom shell (1) and is inserted into the installation groove (9) formed at the center of the inner rotating seat (10), and a first bearing (6) is arranged in a through hole between a rotating shaft of the rotating motor (5) and the bottom shell (1), the outer side wall of the inner rotating seat (10) is fixedly arranged on the first rack (12), the inner side wall of the rotating disk (4) is fixedly arranged on the second rack (13), the rotating gear (8) is arranged in the inner cavity (7) of the rotating disk (4), the rotating gear (8) is positioned on one side of the inner rotating seat (10), one end of the transmission rotating shaft (15) is arranged above the upper cover (2), and the other end of the transmission rotating shaft (15) penetrates through holes formed in the upper cover (2) and is fixedly connected with the rotating gear (8).

2. The automatic motor reversing device according to claim 1, wherein: the rubber gasket is arranged at the joint between the bottom shell (1) and the upper cover (2), and the fastening bolts (3) respectively penetrate through four through holes formed in the outer side edge of the upper cover (2) to be in threaded connection with the bottom shell (1).

3. The automatic motor reversing device according to claim 1, wherein: the groove formed in the top end of the rotating shaft of the rotating motor (5) is aligned to the limiting groove (11) on one side of the mounting groove (9), and the limiting groove (11) and the groove are internally provided with positioning pins.

4. The automatic motor reversing device according to claim 1, wherein: the first rack (12) and the second rack (13) are both semi-arc-shaped racks, and the first rack (12) and the second rack (13) are arranged in opposite directions.

5. The automatic motor reversing device according to claim 1, wherein: lubricating oil is coated on the rotating gear (8), the first rack (12) and the second rack (13).