CN110921472A - Permanent-magnet direct-drive type mine hoist - Google Patents
Permanent-magnet direct-drive type mine hoist Download PDFInfo
- Publication number
- CN110921472A CN110921472A CN201911343946.7A CN201911343946A CN110921472A CN 110921472 A CN110921472 A CN 110921472A CN 201911343946 A CN201911343946 A CN 201911343946A CN 110921472 A CN110921472 A CN 110921472A
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- China
- Prior art keywords
- permanent magnet
- brake
- synchronous motor
- magnet synchronous
- spindle unit
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B15/00—Main component parts of mining-hoist winding devices
- B66B15/08—Driving gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
- B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/26—Operating devices pneumatic or hydraulic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention provides a permanent magnet direct-drive type mine hoist, which is characterized in that a main shaft device is arranged on bases of a left main shaft device and a right main shaft device, a permanent magnet synchronous motor is arranged on the axis of the main shaft devices, a shaft end of the main shaft devices is connected with the shaft end of the permanent magnet synchronous motor by adopting a coupler to play a role in transmitting torque.
Description
Technical Field
The invention relates to the technical field of mine hoists, in particular to a permanent magnet direct-drive type mine hoist which directly drives a hoist main shaft device by adopting a low-speed permanent magnet synchronous motor.
Background
China reserves coal resources and finds out that the reserve is 11800 hundred million tons. Wherein: the basic storage capacity is 3260 hundred million tons, and the resource capacity is 8540 hundred million tons. In the basic reserves, the remaining exploratory recoverable reserves are 1768 hundred million tons, and the ascertained resource reserves of five provinces (districts) of inner Mongolia, Shanxi, Xinjiang, Shanxi and Guizhou are 9561 million tons and account for 81 percent of the whole country. At present, the yield of coal in China reaches the capacity of 30 hundred million tons of coal in recent years, and the total energy demand of coal in China is estimated to be greatly increased by 2020, and the energy demand exceeds 50 hundred million tons of standard coal, wherein more than 80 percent of the energy demand is promoted by a well worker; over 90% of metal mines need to be lifted by well workers.
The mine hoist is throat equipment for connecting the ground and the underground in an underground mine; ultra-deep mine hoisting equipment is a key equipment necessary to exploit mineral resources deeper in the earth. The safe, reliable and efficient operation of the lifting equipment plays a great role in development and utilization of mineral resources, and plays an extremely important role in industrial production and economic construction. Mine extension and the continuous increase in demand for coal and non-coal mine resources provide a market foundation for mine hoists.
As shown in fig. 1, a mine hoist in the prior art generally adopts a transmission mode of a motor 10+ a reducer 13+ a main shaft device 4, a steel wire rope is wound on a winding drum of the main shaft device 4, a heavy object at the other end of the steel wire rope is lifted or lowered through rotation of the winding drum, a matched motor is a three-phase asynchronous motor, a power factor when the mine hoist operates at rated power is generally 72-88%, and the mine hoist is used as mine hoisting equipment, because of different load properties, the maximum hoisting weight is taken as a calculation basis during design, and a certain margin is considered on the basis, but in the actual use process, the use frequency of the maximum hoisting weight is very low, the light load working time accounts for more than 90%, and under the working condition of the situation, the use power can only reach 50% of the design power and is even lower (namely, a large horse-drawn trolley phenomenon), so that the; in addition, the mechanical efficiency of the equipment is further reduced, the efficiency of the whole machine is low, and energy loss and waste are caused due to the transmission of two-stage high-speed couplings (the high-speed coupling 11 is connected between the speed reducer 13 and the motor 10, and the low-speed coupling 12 is connected between the speed reducer 13 and the main shaft device 4) and the speed reducer 13; the high-speed coupling 11 is generally an elastic coupling, and because the service life of an elastic element is limited, regular inspection and maintenance are required, and the speed reducer 13 also needs to be inspected regularly and lubricating oil is replaced, the workload of equipment maintenance is large.
The low-speed permanent magnet synchronous motor is a novel motor developed in recent years, a motor rotor adopts a permanent magnet to replace a traditional coil winding, and the motor has the advantages of high efficiency, energy conservation, low noise, small heat generation, large starting torque and the like, and is widely applied to equipment such as elevators, mining belt conveyors and the like.
Disclosure of Invention
The invention aims to provide a permanent-magnet direct-drive mine hoist, and aims to solve the technical problems of energy loss and waste caused by reduced mechanical efficiency and low overall efficiency of mine hoist equipment in the prior art.
The technical scheme of the invention is as follows:
the utility model provides a permanent magnetism directly drives type mine winder, includes PMSM, shaft coupling, disc brake, spindle unit and spindle unit base, spindle unit installs on two spindle unit bases of left and right sides, and PMSM installs on spindle unit's axis, adopts the shaft coupling to couple together spindle unit's axle head and PMSM's axle head, plays the effect of transmission moment of torsion, and a plurality of disc brake symmetries are installed in both sides around spindle unit, are the safety brake device of lifting machine, and when disc brake loosens, spindle unit can the rotation work, and when disc brake closed, the lifting machine is in the shutdown state, in lifting machine operation process, if meet emergency, adopt emergency braking, can make disc brake closed, make the lifting machine park.
The permanent magnet direct-drive mine hoist is characterized in that the lower portion of a base of each main shaft device is fixed to a foundation through a first foundation bolt, the lower portions of two sides of each permanent magnet synchronous motor are fixed to the foundation through second foundation bolts, and the lower portions of two sides of each disc brake are fixed to the foundation through third foundation bolts.
The permanent magnet direct-drive mine hoist comprises a main shaft device, a permanent magnet direct-drive mine hoist body, a disc brake, a main shaft device, a hydraulic pump, a brake block assembly and a brake disc, wherein the disc brake comprises two brake discs and a brake block assembly combined with the brake discs, the two brake discs are symmetrically arranged at the end part frames of the two sides of the main shaft device, when the brake discs are closed, the brake discs are tightly braked, the brake discs are not rotated, the main shaft device is braked, the brake block assembly is communicated with the hydraulic pump through the hydraulic pipeline, and the.
The invention has the beneficial effects that the main machine of the permanent magnet direct drive type mine hoist adopts the low-speed permanent magnet synchronous motor to directly drive the main shaft device of the hoist, the motor is connected with the main shaft device by the coupler, and the driving mode has the advantages that:
1. simplify transmission structure, save installation space: because the main shaft device of the hoist is directly driven by the permanent magnet synchronous motor, the transition link of a high-speed coupler and a speed reducer is omitted, the axial size of the whole hoist is greatly reduced, a large amount of installation space can be saved, and particularly for underground application, a large amount of underground chamber development cost can be saved.
2. Reduce the equipment fixing degree of difficulty: when the elevator with the traditional structure is installed, the motor, the speed reducer and the spindle device need to be adjusted on the same axis, the adjustment is difficult, the permanent magnet direct drive type elevator only needs to adjust the axis coincidence of the permanent magnet synchronous motor and the spindle device, and the installation difficulty is greatly reduced.
3. The transmission efficiency is high, and energy conservation is showing: the permanent magnet synchronous motor adopts a permanent magnet as a motor rotor, the efficiency of the permanent magnet synchronous motor can reach more than 98 percent without rotor large exciting current and power loss in the running and starting processes, the efficiency of the permanent magnet synchronous motor can still reach more than 97 percent when the permanent magnet synchronous motor runs under the condition of low load, namely the power loss of the equipment is extremely low under the condition of 'big horse drawing a trolley', a speed reducer and a high-speed coupler are cancelled, the permanent magnet synchronous motor is adopted for direct driving, the transmission efficiency can be improved by more than 3 percent, and the comprehensive energy-saving effect can be improved by more than 20 percent.
4. The noise is low: the noise of the hoister mainly comprises a motor and speed reduction noise, because the rotor of the permanent magnet synchronous motor has no exciting current, the noise of the permanent magnet synchronous motor is about 60dB (A) and is reduced by about 25dB (A) when the permanent magnet synchronous motor runs, and the system has no speed reducer, the running noise of the whole hoister can be controlled within 65dB (A), the equipment runs with low noise, and a good working environment can be created for an operator.
Drawings
Fig. 1 is a schematic diagram of a prior art mine hoist construction.
Fig. 2 is a schematic structural view of a mine hoist embodying the present invention.
In the drawings: the brake device comprises a permanent magnet synchronous motor 1, a coupler 2, a disc brake 3, a spindle device 4, a second foundation bolt 5, a first foundation bolt 6, a spindle device base 7, a third foundation bolt 8, a motor 10, a high-speed coupler 11, a low-speed coupler 12, a speed reducer 13, a brake disc 30 and a brake block assembly 31.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
As shown in fig. 2, an embodiment of a permanent magnet direct-drive mine hoist comprises a permanent magnet synchronous motor 1, a coupler 2, a disc brake 3, a spindle device 4 and spindle device bases 7, wherein the spindle device 4 is installed on the left spindle device base 7 and the right spindle device base 7, the permanent magnet synchronous motor 1 is installed on the axis of the spindle device 4, the coupler 2 is adopted to connect the shaft end of the spindle device 4 with the shaft end of the permanent magnet synchronous motor 1 to play a role in transmitting torque, a plurality of disc brakes 3 are symmetrically installed on the front side and the rear side of the spindle device 4, in the embodiment, four disc brakes 3 are adopted as safety brake devices of the hoist, when the disc brakes 3 are released, the spindle device 4 can work in a rotating manner, when the disc brakes 3 are closed, the hoist is in a shutdown state, and when the hoist runs, emergency braking is adopted, the disc brake 3 can be closed to stop the elevator.
In this embodiment, the lower part of each spindle device base 7 is fixed on a foundation through a first anchor bolt 6, the lower parts of the two sides of the permanent magnet synchronous motor 1 are fixed on the foundation through a second anchor bolt 5, and the lower parts of the two sides of each disc brake 3 are respectively fixed on the foundation through a third anchor bolt 8, so that the devices are more stably mounted, and the stability of the whole machine is improved.
In this embodiment, the disc brake 3 includes two brake discs 30 and a brake pad assembly 31 combined with the brake discs 30, the two brake discs 30 are symmetrically disposed at the two side end frames of the spindle device 4, when the brake discs 30 are closed, the brake discs are tightened, the brake discs are not rotated, so as to brake the spindle device 4, the brake pad assembly 31 is communicated with a hydraulic pump through a hydraulic pipeline, the brake pad assembly 31 is closed or released by hydraulically driving the brake discs 30, and the specific hydraulic principle and pipeline design of the disc brake 3 can refer to the disc brake 3 in the prior art.
When in use:
1. simplify transmission structure, save installation space: because the permanent magnet synchronous motor 1 is adopted to directly drive the main shaft device 4 of the elevator, the transition link of the high-speed coupler 11 and the speed reducer 12 is omitted, the axial size of the whole machine is greatly reduced, a large amount of installation space can be saved, and particularly for underground application, a large amount of underground chamber development cost can be saved.
2. Reduce the equipment fixing degree of difficulty: when the traditional structure hoister is installed, the three major parts of the motor 10, the reducer 12 and the spindle device 4 must be adjusted on the same axis, the adjustment is difficult, the permanent magnet direct drive type hoister only needs to adjust the axes of the permanent magnet synchronous motor 1 and the spindle device 4 to be superposed, and the installation difficulty is greatly reduced.
3. The transmission efficiency is high, and energy conservation is showing: the permanent magnet synchronous motor 1 adopts a permanent magnet as a motor rotor, no rotor large exciting current exists in the operation and starting processes, no power loss exists, the efficiency of the permanent magnet synchronous motor 1 can reach more than 98%, the efficiency of the permanent magnet synchronous motor 1 can still reach more than 97% when the permanent magnet synchronous motor 1 operates under the condition of low load, namely the power loss of equipment is extremely low under the condition of 'large horse pulling trolley', the speed reducer 12 and the high-speed coupler 11 are cancelled, the permanent magnet synchronous motor 1 is adopted for direct driving, the transmission efficiency can be improved by more than 3%, and the comprehensive energy-saving effect can be improved by more than 20%.
4. The noise is low: the noise of the hoister mainly comprises a motor 10 and deceleration noise, because the rotor of the permanent magnet synchronous motor 1 has no exciting current, the noise of the permanent magnet synchronous motor 1 is about 60dB (A) and is reduced by about 25dB (A) when in operation, and the system has no reducer 12, the operation noise of the whole hoister can be controlled within 65dB (A), the equipment operates with low noise, and a good working environment can be created for operation drivers.
In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.
Claims (3)
1. The utility model provides a permanent magnetism directly drives type mine winder, its characterized in that, includes permanent magnet synchronous motor (1), shaft coupling (2), disc brake (3), spindle unit (4) and spindle unit base (7), spindle unit (4) are installed on controlling two spindle unit bases (7), and permanent magnet synchronous motor (1) is installed on the axis of spindle unit (4), adopts shaft coupling (2) to couple together the axle head of spindle unit (4) and the axle head of permanent magnet synchronous motor (1), and both sides around spindle unit (4) are installed to a plurality of platform dish brake (3) symmetries.
2. The mine hoist of claim 1, wherein each spindle unit base (7) is fixed to a foundation through a first anchor bolt (6) below the base, the permanent magnet synchronous motor (1) is fixed to the foundation through a second anchor bolt (5) below both sides of the permanent magnet synchronous motor, and each disc brake (3) is fixed to the foundation through a third anchor bolt (8) below both sides of the disc brake.
3. The mine hoist of claim 1, wherein the disc brake (3) comprises two brake discs (30) and a brake block assembly (31) combined with the brake discs (30), the two brake discs (30) are symmetrically arranged at the rims of the end parts of the two sides of the main shaft device (4), the main shaft device (4) is braked and stopped when the brake discs (30) are closed, the brake block assembly (31) is communicated with a hydraulic pump through a hydraulic pipeline, and the brake block assembly (31) is closed or loosened through the hydraulic drive of the brake discs (30).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343946.7A CN110921472A (en) | 2019-12-24 | 2019-12-24 | Permanent-magnet direct-drive type mine hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911343946.7A CN110921472A (en) | 2019-12-24 | 2019-12-24 | Permanent-magnet direct-drive type mine hoist |
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| CN110921472A true CN110921472A (en) | 2020-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911343946.7A Pending CN110921472A (en) | 2019-12-24 | 2019-12-24 | Permanent-magnet direct-drive type mine hoist |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115285870A (en) * | 2022-07-29 | 2022-11-04 | 江西华伍制动器股份有限公司 | Semi-direct-drive hoisting mechanism |
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| US20110073297A1 (en) * | 2008-12-22 | 2011-03-31 | Williams Kevin R | Permanent magnet direct drive drawworks |
| CN201873473U (en) * | 2010-09-26 | 2011-06-22 | 山西新富升机器制造有限公司 | Permanent magnet motor shaft hoist |
| CN204778251U (en) * | 2015-07-08 | 2015-11-18 | 山东欧瑞安电气有限公司 | Synchronous frequency conversion lifting machine of permanent magnetism |
| CN205061304U (en) * | 2015-09-21 | 2016-03-02 | 山东泰山天盾矿山机械股份有限公司 | New type mine hoist |
| CN106629456A (en) * | 2016-12-30 | 2017-05-10 | 山西新富升自动化工程有限公司 | Mine hoist compact in structure |
| CN206575249U (en) * | 2017-02-23 | 2017-10-20 | 沈阳寰博磁电科技有限公司 | A kind of magnetic material grinding machine permanent magnet direct-drive structure |
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2019
- 2019-12-24 CN CN201911343946.7A patent/CN110921472A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110073297A1 (en) * | 2008-12-22 | 2011-03-31 | Williams Kevin R | Permanent magnet direct drive drawworks |
| CN201873473U (en) * | 2010-09-26 | 2011-06-22 | 山西新富升机器制造有限公司 | Permanent magnet motor shaft hoist |
| CN204778251U (en) * | 2015-07-08 | 2015-11-18 | 山东欧瑞安电气有限公司 | Synchronous frequency conversion lifting machine of permanent magnetism |
| CN205061304U (en) * | 2015-09-21 | 2016-03-02 | 山东泰山天盾矿山机械股份有限公司 | New type mine hoist |
| CN106629456A (en) * | 2016-12-30 | 2017-05-10 | 山西新富升自动化工程有限公司 | Mine hoist compact in structure |
| CN206575249U (en) * | 2017-02-23 | 2017-10-20 | 沈阳寰博磁电科技有限公司 | A kind of magnetic material grinding machine permanent magnet direct-drive structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115285870A (en) * | 2022-07-29 | 2022-11-04 | 江西华伍制动器股份有限公司 | Semi-direct-drive hoisting mechanism |
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Application publication date: 20200327 |