CN209761419U

CN209761419U - Loading device directly driven by permanent magnet motor

Info

Publication number: CN209761419U
Application number: CN201920487233.7U
Authority: CN
Inventors: 陈效栋
Original assignee: SHANGHAI CHUANGLI GROUP CO Ltd
Current assignee: SHANGHAI CHUANGLI GROUP CO Ltd
Priority date: 2019-04-11
Filing date: 2019-04-11
Publication date: 2019-12-10
Anticipated expiration: 2029-04-11

Abstract

The utility model discloses a permanent-magnet machine direct drive's loading attachment, including the shovel board that is used for the splendid attire material and install on the shovel board and be used for driving a pair of drive arrangement that the equipment of the next process was carried to the material on the shovel board, wherein, drive arrangement includes: a driving seat fixedly arranged on the shovel plate; the permanent magnet motor is arranged on the driving seat, and an output shaft of the permanent magnet motor extends out of the driving seat; the frequency converter is connected with the permanent magnet motor and is used for controlling the permanent magnet motor to work; the rotating disk is connected with an output shaft key of the permanent magnet motor and is sleeved outside the upper part of the driving seat; and the loading mechanism is fixedly connected with the rotating disc and is used for driving and conveying materials. The utility model discloses a loading device, compact structure, it is small, light in weight, start torque is big, efficient, operates steadily, and the noise is low, simple to operate.

Description

Loading device directly driven by permanent magnet motor

Technical Field

the utility model relates to a mining machinery technical field especially relates to a can be applied to drive loading attachment of equipment such as continuous miner, entry driving machine, coal charger, strip mine continuous mining equipment.

Background

At present, the loading device of continuous coal mining machines, heading machines, coal loaders and strip mine continuous mining equipment which are mainstream in China adopts a hydraulic motor or an electric motor to drive a speed reducer to drive the loading device. When the hydraulic motor is adopted for driving, a large pump station is needed for supporting, the volume of an oil tank is large, and the conversion efficiency is low; when the motor is adopted to drive the speed reducer, the speed reducer is large in size, high in manufacturing, maintaining and maintaining cost and low in transmission efficiency, so that the design structure of the shovel plate is complicated.

disclosure of Invention

The utility model aims at providing a permanent-magnet machine direct drive's loading attachment.

In order to realize the above object of the present invention, the utility model provides a permanent-magnet machine direct drive's loading attachment, including the shovel board that is used for splendid attire material and install on the shovel board and be used for driving a pair of drive arrangement that the equipment of next process was carried to material on the shovel board, wherein, drive arrangement includes: a driving seat fixedly arranged on the shovel plate; the permanent magnet motor is arranged on the driving seat, and an output shaft of the permanent magnet motor extends out of the driving seat; the frequency converter is connected with the permanent magnet motor and is used for controlling the permanent magnet motor to work; the rotating disk is connected with an output shaft key of the permanent magnet motor and is sleeved outside the upper part of the driving seat; and the loading mechanism is fixedly connected with the rotating disc and is used for driving and conveying materials.

And a bearing is arranged between the driving seat and the rotating disc, and a round nut used for limiting the axial direction of the bearing is installed at the bottom of the bearing.

The round nut is mounted on an output shaft of the permanent magnet motor and is positioned at the lower part of the rotating disc.

Wherein the ring outer diameter of the round nut is larger than the inner diameter of the bearing.

The loading mechanism is sleeved outside the rotating disc and fastened on the rotating disc through a positioning pin and a bolt.

Wherein, the driving seat is fixed on the shovel plate through a bolt.

compared with the prior art, the utility model discloses permanent-magnet machine direct drive's loading attachment has compact structure, and is small, light in weight, and starting torque is big, and is efficient, operates steadily, and the noise is low, simple to operate's advantage.

The present invention will be described in detail with reference to the accompanying drawings.

drawings

Fig. 1 is a schematic view of a loading device directly driven by a permanent magnet motor according to the embodiment (a shovel plate is a strip mine continuous mining equipment shovel plate);

FIG. 2 is a perspective view of a driving device directly driven by a permanent magnet motor according to the embodiment;

Fig. 3 is a sectional view of a driving apparatus directly driven by the permanent magnet motor according to the embodiment.

Detailed Description

As shown in fig. 1, for the loading device directly driven by the permanent magnet motor provided by the embodiment of the present invention adopts a schematic diagram of a shovel plate for continuous mining equipment of a strip mine, as shown in fig. 2 and fig. 3, which are respectively a perspective view and a cross-sectional view of a driving device in the loading device provided by the embodiment of the present invention.

as can be seen from fig. 1 to 3, the loading device of the present embodiment includes a shovel plate 10 for containing the material, and a pair of driving devices installed on the shovel plate 10 for driving the material on the shovel plate 10 to be conveyed toward the equipment of the next process, wherein the driving devices include; a driving seat 2 fixedly installed on the shovel plate 10; a permanent magnet motor 1 which is arranged on the driving seat 2 and the output shaft of which extends out of the driving seat 2; the frequency converter is connected with the permanent magnet motor 1 and is used for controlling the permanent magnet motor to work; the rotating disk 4 is connected with an output shaft key of the permanent magnet motor 1 and is sleeved outside the upper part of the driving seat 2; and the loading mechanism is fixedly connected with the rotating disk 4 and is used for driving and conveying materials.

Specifically, the shovel plate 10 of the present embodiment may be a shovel plate for loading and transporting materials on a continuous miner, a heading machine, a coal loader, a strip mine continuous mining equipment, etc., which may adopt a structure of the related art and will not be described herein.

The shovel plate 10 is provided with a driving seat 2, the driving seat 2 is a stepped shaft-shaped driving seat with a central through hole, the bottom of the driving seat is the part with the largest diameter, and the bottom of the driving seat is fixed on the shovel plate 10 through a plurality of bolts 9.

Install permanent-magnet machine 1 on drive seat 2, permanent-magnet machine 1 accessible a plurality of bolt fastening are on drive seat 2. The permanent magnet motor 1 can adopt a low-speed large-torque permanent magnet motor, the base of the permanent magnet motor is positioned below the driving seat 2, and the output shaft of the permanent magnet motor penetrates through the central through hole of the driving seat 2 and extends upwards.

the permanent magnet motor of the embodiment is connected with a frequency converter through a cable, and the frequency converter can be installed in an electric cabinet (not shown in the figure) of equipment such as a continuous miner, a heading machine, a coal loader, strip mine continuous mining equipment and the like. Because the permanent magnet motor adopts the frequency converter for power supply, the speed regulation range is wide, stepless speed change can be realized, the operation is convenient, flexible, strong in controllability, high in operation efficiency, small in impact on a power grid, simple in transmission chain, low in failure rate and basically free of maintenance, and middle mechanical transmission equipment is removed. In addition, the frequency converter is adopted to control the permanent magnet synchronous motor to be in soft start with large torque, dynamic tension impact is small during starting, the heavy-load starting effect is good, impact on electrical and mechanical equipment is greatly reduced, and compared with the traditional driving mode, the dynamic safety coefficient is higher under the condition of the same strength. In addition, the permanent magnet motor can be regulated according to the size of the loading capacity, the whole loading system is ensured to run under the optimal driving power, and the traditional loading device of the motor reduction gearbox can only run under the set power, so that the waste of electric energy is avoided.

Wherein, the output shaft of permanent-magnet machine 1 of this embodiment passes through the spline or the parallel key is connected with rotary disk 4 to can drive rotary disk 4 rotatory when making permanent-magnet machine 1 rotatory. The rotary disk 4 is in a stepped shaft shape and includes a smaller diameter portion located at an upper portion and a larger diameter portion connected to a bottom portion of the smaller diameter portion. The center of the bottom of the part with the larger diameter is provided with a counter bore extending along the axial direction of the part, and the inner wall of the counter bore is provided with a spline groove or a flat spline groove used for being connected with an output shaft of the permanent magnet motor 1. Correspondingly, the outer wall of the output shaft of the permanent magnet motor 1 is provided with a matched spline groove or a flat spline groove. Preferably, a spline connection may be used. In addition, an annular groove used for placing the upper part of the driving seat 2 is further annularly arranged on the outer side of the counter bore of the larger diameter part of the rotating disk 4, and the annular groove is a stepped groove which is narrow at the upper part and wide at the lower part along the axial direction of the output shaft of the permanent magnet motor.

Wherein, the inner hole diameter of the driving seat 2 is larger than the inner diameter of the annular groove of the rotating disk 4 so as to be convenient for assembly, and the length of the central through hole of the driving seat 2 along the axial direction is larger than the length of the annular groove of the rotating disk 4 along the axial direction. Between the inner wall of the drive socket 2 and the outer wall of the annular groove of the rotary disc 4, a bearing 5 is arranged, so that the rotary disc 4 can rotate relative to the drive socket 2.

In order to axially limit the bearing 5, a round nut 3 is mounted at the bottom of the bearing 5. The round nut 3 can be installed on the output shaft of the permanent magnet motor 1 through threaded connection and is positioned at the lower part of the rotating disk 4. During design, the outer diameter of the ring of the round nut 3 needs to be larger than the inner diameter of the bearing 5, so that the upper surface of the round nut can abut against the bottom of the bearing 5, the bearing 5 is prevented from moving on the output shaft of the permanent magnet motor 1 along the axial direction, and faults or noise is avoided during work.

The loading mechanism 6 for driving and conveying materials is sleeved on the outer wall of the rotating disc 4 and fixed on the rotating disc 4 through a plurality of positioning pins and bolts which extend in the axial direction of the permanent magnet motor. During design, a positioning pin hole 7 and a bolt hole 8 are respectively formed in corresponding positions of the loading mechanism 6 and the rotating disk 4, so that a positioning pin and a bolt sequentially penetrate through the positioning pin hole 7 and the bolt hole 8 in the loading mechanism 6 and the rotating disk 4 from top to bottom, the loading mechanism 6 is fixed on the rotating disk 4, and the loading mechanism 6 can rotate along with the rotating disk 4. The loading mechanism 6 of the present embodiment may be a star wheel loading mechanism (as shown in fig. 1-3) or a crab claw loading mechanism (not shown).

Next, the assembly and operation of the loading device of the present embodiment will be described with reference to fig. 1 to 3.

During assembly, the bearing 5 is fixed between the rotating disk 3 and the driving seat 2, the round nut 3 is used for fastening and positioning, the external spline of the output shaft of the permanent magnet motor 1 is aligned with the internal spline of the rotating disk 4, the permanent magnet motor is fixed on the driving seat through a bolt, the loading mechanism 6 is sleeved on the rotating disk, the positioning pin is worn on the rotating disk and fastened through the bolt, and then the driving seat is fixed on the shovel plate through the bolt according to the figure 1.

When the frequency converter controls the permanent magnet motor 1 to be in soft start, the rotating disc connected with the output shaft of the permanent magnet motor rotates relative to the driving seat along with the output shaft, and drives the loading mechanism fixedly connected with the rotating disc to rotate along with the output shaft, so that the loading mechanism can drive and convey materials falling onto the shovel plate to equipment of the next procedure.

Compared with the prior art, the utility model discloses permanent-magnet machine direct drive's loading attachment has following advantage:

1. the loading device of the embodiment has the advantages of compact structure, small volume, light weight, large starting torque, high efficiency, stable operation, low noise and convenient installation.

2. According to the loading device, the permanent magnet motor is powered by the frequency converter, the speed regulation range is wide, stepless speed change is achieved, convenience and flexibility are achieved, the control performance is high, the operation efficiency is high, impact on a power grid is small, a transmission chain is simple, middle mechanical transmission equipment is removed, the fault rate is low, and maintenance-free operation is basically achieved.

3. The loading device of this embodiment, heavily carry and start effectually, adopt the big moment of torsion soft start of converter control PMSM, dynamic tension strikes for a short time during the start, greatly reduced to electric and mechanical equipment's impact, compare with traditional drive mode, under the same intensity condition, dynamic safety coefficient is higher.

4. According to the loading device, the permanent magnet motor can be adjusted in speed according to the loading capacity, the whole loading system is guaranteed to run under the optimal driving power, and the traditional loading device of the motor reduction gearbox can only run under the set power, so that the waste of electric energy is avoided.

Although the present invention has been described in detail, the present invention is not limited thereto, and those skilled in the art can modify the principle of the present invention, and therefore, various modifications performed according to the principle of the present invention should be understood as falling into the protection scope of the present invention.

Claims

1. A permanent magnet motor direct drive's loading attachment, includes the shovel board that is used for splendid attire material and installs on the shovel board and be used for driving the material on the shovel board to carry towards the equipment of next process, its characterized in that, drive arrangement includes:

A driving seat fixedly arranged on the shovel plate;

The permanent magnet motor is arranged on the driving seat, and an output shaft of the permanent magnet motor extends out of the driving seat;

The frequency converter is connected with the permanent magnet motor and is used for controlling the permanent magnet motor to work;

The rotating disk is connected with an output shaft key of the permanent magnet motor and is sleeved outside the upper part of the driving seat;

And the loading mechanism is fixedly connected with the rotating disc and is used for driving and conveying materials.

2. The loading device according to claim 1, wherein a bearing is arranged between the driving seat and the rotating disc, and a round nut for axially limiting the bearing is mounted at the bottom of the bearing.

3. The loading device of claim 2, wherein the round nut is mounted on the output shaft of the permanent magnet motor and is located at a lower portion of the rotating disk.

4. The loading device of claim 1, wherein the loading mechanism is sleeved outside the rotating disk and fastened to the rotating disk by a positioning pin and a bolt.