CN212581409U - Direct-drive variable-frequency speed regulation lifting equipment for low-speed permanent magnet synchronous motor - Google Patents
Direct-drive variable-frequency speed regulation lifting equipment for low-speed permanent magnet synchronous motor Download PDFInfo
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- CN212581409U CN212581409U CN202021536784.7U CN202021536784U CN212581409U CN 212581409 U CN212581409 U CN 212581409U CN 202021536784 U CN202021536784 U CN 202021536784U CN 212581409 U CN212581409 U CN 212581409U
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- winding drum
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- magnet synchronous
- synchronous motor
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Abstract
A low-speed permanent magnet synchronous motor direct-drive variable frequency speed regulation lifting device comprises a low-speed permanent magnet synchronous motor, a winding drum type lifting device, a coupler for connecting a transmission shaft of the low-speed permanent magnet synchronous motor and a winding drum central shaft, and a housing window type depth indicator arranged beside the winding drum type lifting device; a brake disc and a hydraulic brake connected to the brake disc are sleeved on one side of the winding drum, and a winding drum rotary encoder is installed at the outer end of a central shaft of the winding drum; a motor transmission shaft rotary encoder is arranged at the outer end of a transmission shaft of the low-speed permanent magnet synchronous motor; a limit sensor is arranged on the memorial archway type depth indicator, and a winding drum rotary encoder, a motor transmission shaft rotary encoder, the limit sensor and a hydraulic system are all connected with a PLC control system; an air duct blowing cold air downwards is arranged above the low-speed permanent magnet synchronous motor. The utility model discloses simple structure, maintenance convenience, safe and reliable just practice thrift the running cost.
Description
Technical Field
The utility model belongs to the technical field of hoisting equipment, concretely relates to variable frequency speed governing hoisting equipment who is directly driven by PMSM.
Background
Traditional lifting means structure is mostly motor, speed reducer, lifting means and connects through middle mechanical transmission spare each other, and the transmission connecting piece is more, and the structure is complicated, and equipment operational reliability is not high. With the development of the permanent magnet synchronous motor and the variable frequency speed control technology, the low-speed permanent magnet synchronous motor is used for directly driving the main winding drum of the lifting equipment, so that the structure of the lifting equipment is simplified, and the safety and reliability of the operation of the equipment are further improved.
Disclosure of Invention
An object of the utility model is to solve the not enough of prior art, provide a simple structure, maintain convenient, safe and reliable and practice thrift running cost's low-speed PMSM directly drives variable frequency speed governing lifting means.
The utility model adopts the following technical scheme:
a low-speed permanent magnet synchronous motor direct-drive variable frequency speed regulation lifting device comprises a low-speed permanent magnet synchronous motor (3), a reel type lifting device, a coupling (4) for connecting a transmission shaft of the low-speed permanent magnet synchronous motor and a reel central shaft, and a housing window type depth indicator (8) arranged beside the reel type lifting device; the two ends of a central shaft of a winding drum (6) of the winding drum type lifting equipment are respectively arranged in bearing seats on a winding drum support (5), a brake disc (6) is sleeved on one side of the winding drum (7), a hydraulic brake (10) connected to the brake disc is fixedly arranged on a base (13), and a winding drum rotary encoder (9) is arranged at the outer end of the central shaft of the winding drum; a motor transmission shaft rotary encoder (1) is arranged at the outer end of the transmission shaft of the low-speed permanent magnet synchronous motor; a limit sensor (14) is arranged on the memorial archway type depth indicator, and the winding drum rotary encoder (9), the motor transmission shaft rotary encoder (1), the limit sensor (14) and a hydraulic system for controlling the hydraulic brake (10) are all connected with a PLC control system; and an air duct (12) which is used for forcedly cooling the low-speed permanent magnet synchronous motor and blows cold air downwards is arranged above the low-speed permanent magnet synchronous motor (3).
The utility model discloses directly ally oneself with low-speed PMSM and lifting means reel, do not have middle transmission speed change mechanism, carry out lifting means's speed governing through variable frequency speed governing and control system. Signals of a winding drum rotary encoder, a motor transmission shaft rotary encoder, a limit sensor of the memorial archway type depth indicator and a hydraulic system for controlling the hydraulic brake are connected into the PLC control system, so that the functions of speed control, digital elevation display calibration, safe speed reduction, limit protection, safe braking and the like of the lifting equipment are realized. And cooling the low-speed permanent magnet synchronous motor by forced air cooling.
The utility model discloses simple structure, maintenance work load is little, operation safe and reliable, and control is nimble accurate, and equipment transmission is efficient, the running cost is low.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic view of a brake rotor being nested on a spool;
fig. 3 is a schematic diagram of a forced cooling air duct arranged above a low-speed permanent magnet synchronous motor.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1, a low-speed permanent magnet synchronous motor direct-drive variable-frequency speed-regulating lifting device comprises a low-speed permanent magnet synchronous motor 3, a reel type lifting device, a coupling 4 for connecting a transmission shaft of the low-speed permanent magnet synchronous motor and a reel central shaft, and a memorial archway type depth indicator 8 arranged beside the reel type lifting device; the two ends of the central shaft of the winding drum 7 of the winding drum type lifting equipment are respectively arranged in bearing seats on the winding drum bracket 5, and a brake disc 6 for system safety braking is sleeved on one side of the winding drum 7. As shown in fig. 2, the hydraulic brakes 10 connected to the front and rear of the disc are fixedly mounted on the base 13, and the mounting structure and brake control of the drum 7 and the disc 6 thereof and the hydraulic brakes 10 are conventional. A drum rotary encoder 9 is arranged at the outer end of a drum central shaft, and a groove turning device 11 is arranged right below the drum and used for installing a drum lining plate shaping cutter (the drum lining plate shaping cutter is an original technical part); a motor transmission shaft rotary encoder 1 is arranged at the outer end of the transmission shaft of the low-speed permanent magnet synchronous motor; a limit sensor 14 is mounted on the memorial archway-type depth indicator. Signals of the winding drum rotary encoder 9 and the motor transmission shaft rotary encoder 1 are connected into a PLC control system, and functions of speed control, digital elevation display calibration and the like during the working of the lifting equipment are achieved. Signals of a limit sensor 14 of the memorial archway type depth indicator are connected into a PLC control system and are matched with digital elevation control to realize protection functions of safe speed reduction, limit and the like. An oil pipe of the hydraulic system is connected with the hydraulic brake 10, the hydraulic system realizes normal parking of the lifting equipment through the PLC control system, and safe braking is executed according to received signals of digital elevation, faults, accidents and the like, and the brake disc 6 is tightly braked.
As shown in fig. 1 and 3, an air duct 12 for forcibly cooling the low-speed permanent magnet synchronous motor by blowing cool air downward is provided outside the cooling air inlet 2 of the low-speed permanent magnet synchronous motor 3.
The utility model discloses a low-speed PMSM directly drives variable frequency speed governing lifting means can be according to different work condition, through variable frequency control system and PLC control system realization speed given and control.
Low-speed PMSM 3, memorial archway formula depth indicator 8 are prior art equipment. The PLC control system is also a control system in the prior art, and a person skilled in the art can perform PLC control programming according to the operation requirement of equipment.
The utility model discloses a cancellation traditional lifting means's transmission speed change mechanism realizes speed control through variable frequency speed control system and PLC control system to reach the purpose of simplifying equipment structure, lifting means fail safe nature, improve equipment transmission efficiency, reduction maintenance work load, reduction equipment running cost.
Above just the utility model discloses an implementation mode, the all technical scheme with this embodiment equivalence all belong to the utility model discloses a protection scope.
Claims (1)
1. A low-speed permanent magnet synchronous motor direct-drive variable frequency speed regulation lifting device is characterized by comprising a low-speed permanent magnet synchronous motor (3), a reel type lifting device, a coupler (4) for connecting a transmission shaft of the low-speed permanent magnet synchronous motor and a reel central shaft, and a memorial archway type depth indicator (8) arranged beside the reel type lifting device; two ends of a central shaft of a winding drum (7) of the winding drum type lifting equipment are respectively installed in bearing seats on a winding drum support (5), a brake disc (6) is sleeved on one side of the winding drum (7), a hydraulic brake (10) connected to the brake disc is fixedly installed on a base (13), and a winding drum rotary encoder (9) is installed at the outer end of the central shaft of the winding drum; a motor transmission shaft rotary encoder (1) is arranged at the outer end of the transmission shaft of the low-speed permanent magnet synchronous motor; a limit sensor (14) is arranged on the memorial archway type depth indicator, and the winding drum rotary encoder (9), the motor transmission shaft rotary encoder (1), the limit sensor (14) and a hydraulic system for controlling the hydraulic brake (10) are all connected with a PLC control system; and an air duct (12) which is used for forcedly cooling the low-speed permanent magnet synchronous motor and blows cold air downwards is arranged above the low-speed permanent magnet synchronous motor (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021536784.7U CN212581409U (en) | 2020-07-29 | 2020-07-29 | Direct-drive variable-frequency speed regulation lifting equipment for low-speed permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021536784.7U CN212581409U (en) | 2020-07-29 | 2020-07-29 | Direct-drive variable-frequency speed regulation lifting equipment for low-speed permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212581409U true CN212581409U (en) | 2021-02-23 |
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ID=74658281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021536784.7U Active CN212581409U (en) | 2020-07-29 | 2020-07-29 | Direct-drive variable-frequency speed regulation lifting equipment for low-speed permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212581409U (en) |
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2020
- 2020-07-29 CN CN202021536784.7U patent/CN212581409U/en active Active
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