CN218940976U

CN218940976U - Motor driver and delivery flow control system thereof

Info

Publication number: CN218940976U
Application number: CN202320147380.6U
Authority: CN
Inventors: 刘子彬; 朱孔帅; 何晓涛; 王平; 林锦晖; 司徒选; 李建彬; 黄天放; 王博良; 方宇星; 王亭霖; 黄伟文; 程国红; 张红伟; 黄庆磊; 聂煜洋
Original assignee: Guangzhou Port Xinsha Stevedoring Co ltd; Hefei Honen Mechanical & Electronic Technology Co ltd; CCCC Fourth Harbor Engineering Institute Co Ltd
Current assignee: Guangzhou Port Xinsha Stevedoring Co ltd; Hefei Honen Mechanical & Electronic Technology Co ltd; CCCC Fourth Harbor Engineering Institute Co Ltd
Priority date: 2023-02-03
Filing date: 2023-02-03
Publication date: 2023-04-28
Anticipated expiration: 2033-02-03

Abstract

The utility model relates to a motor driver and a delivery flow control system thereof. The motor driver comprises a containing shell, a circuit board arranged in an inner cavity of the containing shell and a photoelectric switch. The photoelectric switch is arranged on one side outside the accommodating shell, and pins of the photoelectric switch penetrate through the accommodating shell and extend into an inner cavity of the accommodating shell, so that the photoelectric switch is welded with the circuit board. The photoelectric switch is directly and fixedly arranged on the shell of the driver, and the pins of the photoelectric switch penetrate through the shell and are electrically connected with the internal circuit board to realize signal transmission, so that wiring of the photoelectric switch is effectively saved, and the installation difficulty and operation and maintenance cost of devices are effectively reduced; on the other hand, the adaptability of the motor driver to the bin bottom environment can be improved, faults such as abrasion and the like of a circuit of the photoelectric switch due to grain particles and dust sputtered near the gate are effectively overcome, and the motor driver can be ensured to operate stably.

Description

Motor driver and delivery flow control system thereof

Technical Field

The utility model relates to the technical field of motor drivers, in particular to a motor driver and a delivery flow control system thereof.

Background

The stepper motor driver is an actuator that converts electrical pulses into angular displacements, and when the motor driver receives a pulse signal, it drives the stepper motor to rotate a fixed angle (called "step angle") in a set direction. In the field of horizontal warehouse grain, the grain delivery flow is regulated by a gate driven by a stepping motor at the bottom of a granary, however, due to the rotation inertia of the motor and the existence of some interference factors, in the control process of a motor driver, the problem that the rotation angle value does not meet the actual control requirement and the motor is out of position is likely to occur.

At present, a common solution is to install a photoelectric switch near an output shaft of a motor to judge the rotation condition of the motor, but the common photoelectric switch is generally connected with a related main control chip through a wire, and an additional wiring is needed in a site installation link at the bottom of a granary, so that the installation is inconvenient. In addition, dust and throwing particles in the environment near the bin bottom gate are more, abrasion is easily caused to a circuit of the photoelectric switch, and the probability of faults such as motor dislocation and short circuit of the gate can be further increased after long-time use.

Disclosure of Invention

Based on the above, it is necessary to solve the technical problems that in the prior art, in the process of detecting the rotation angle of a stepping motor of a bin bottom gate, the conventional motor driver is inconvenient to wire with a photoelectric switch and is easy to wear due to the wire, and the motor driver and the discharging flow control system thereof are provided.

The utility model discloses a motor driver, which comprises a containing shell, a circuit board arranged in an inner cavity of the containing shell and a photoelectric switch. The photoelectric switch is arranged on one side outside the accommodating shell, and pins of the photoelectric switch penetrate through the accommodating shell and extend into an inner cavity of the accommodating shell, so that the photoelectric switch is welded with the circuit board.

As a further improvement of the above solution, the optoelectronic switch employs a slot-type optoelectronic sensor comprising a light emitter and a receiver arranged opposite each other, thereby forming a recess area facing away from the housing as the sensing end of the optoelectronic switch.

As a further improvement of the scheme, one side of the outer part of the accommodating shell is provided with a mounting groove communicated with the inner cavity. The photoelectric switch is embedded and fixed in the mounting groove.

As a further improvement of the scheme, a plurality of hole sites penetrating through the wall thickness of the containing shell are formed on the side wall of the mounting groove. The mounting groove is communicated with the cavity of the accommodating shell through the hole site, and pins of the photoelectric switch extend into the inner cavity of the accommodating shell from the hole site.

As a further improvement of the above scheme, an insulating sleeve for enveloping the corresponding pin is embedded in each hole site.

As a further improvement of the above-mentioned aspect, the housing includes a cover and a housing having an opening, the cover being detachably attached to the side of the housing having the opening, thereby forming an inner cavity structure of the housing.

As a further improvement of the scheme, one of the cover body and the shell is provided with a plurality of screw holes, and the other one of the cover body and the shell is provided with a plurality of bolts, so that the cover body and the shell are detachably connected through the threaded connection of the bolts and the screw holes.

As a further improvement of the above, the motor driver further includes a connection terminal. The connection terminal is mounted on a side adjacent to a side of the housing having the photoelectric switch, and is electrically connected to the circuit board. The circuit board is connected with an external switching power supply through a connecting terminal.

As a further improvement of the above, the motor driver further includes a heat radiating fin. The radiating fins are provided with a plurality of radiating fins and are connected on one side of the accommodating shell with the photoelectric switch in parallel.

The utility model also discloses a discharging flow control system, which comprises: funnel gate, step motor and motor driver.

The funnel gate is arranged at the bottom of one machinery bungalow and is used for adjusting the discharge flow of materials in the machinery bungalow.

The stepper motor adjusts the opening and closing degree of the funnel gates through the rotation of the output shaft of the stepper motor.

The motor driver is used for controlling the rotation of the output shaft of the stepping motor. The motor driver adopts any one of the motor drivers.

Wherein, a separation blade is fixedly connected with in the circumference of step motor's output shaft, and this separation blade can pass through photoelectric switch's induction end along with the rotation of output shaft, and then to the circuit board output positioning signal of motor driver.

Compared with the prior art, the technical scheme disclosed by the utility model has the following beneficial effects:

1. the photoelectric switch is directly and fixedly arranged on the shell of the driver, and the pins of the photoelectric switch penetrate through the shell and are electrically connected with the internal circuit board to realize signal transmission, so that wiring of the photoelectric switch is effectively saved. On one hand, when related personnel install the bin bottom gate, the motor and the motor driver, extra wiring is not needed, so that the installation difficulty and the operation and maintenance cost of the device are effectively reduced; on the other hand, the adaptability of the motor driver to the bin bottom environment can be improved, faults such as abrasion and the like of a circuit of the photoelectric switch due to grain particles and dust sputtered near the gate are effectively overcome, and the motor driver can be ensured to operate stably.

2. The delivery flow control system has the same beneficial effects as the motor driver by applying the motor driver, and is not repeated here.

Drawings

FIG. 1 is a schematic diagram of the process of discharging three rooms of a mechanized bungalow in a preferred embodiment of the utility model;

FIG. 2 is an enlarged view of a portion of the single bay of FIG. 1 with multiple hopper gates and a conveyor apparatus;

FIG. 3 is a perspective view showing a motor driver according to a preferred embodiment of the present utility model;

FIG. 4 is a perspective view of FIG. 3 at another view angle;

FIG. 5 is an opposite side view of the motor drive of FIG. 3 with a stop on the output shaft;

FIG. 6 is a perspective view of the cover of FIG. 3;

FIG. 7 is a perspective view of the cover and pins of FIG. 6;

fig. 8 is a perspective view of the optoelectronic switch of fig. 3.

Description of the main reference signs

1. A housing case; 11. a cover body; 111. a screw hole; 12. a housing; 121. a bolt; 2. an optoelectronic switch; 21. pins; 22. a light emitter; 23. a receiver; 4. a recessed region; 5. a mounting groove; 6. hole sites; 61. an insulating sleeve; 7. a connection terminal; 8. a heat radiation fin; 9. an output shaft; 91. a baffle.

The foregoing general description of the utility model will be described in further detail with reference to the drawings and detailed description.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that when an element is referred to as being "mounted to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "or/and" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, the present embodiment provides a delivery flow control system, including: funnel gate, step motor and motor driver. In fig. 2, the hopper gate is arranged at the bottom of a machinery bung and is used for adjusting the discharge flow of the materials in the machinery bung.

In this embodiment, the mechanized bungalow may include 3 storehouse, each storehouse including 9 hopper gates therein. The conveying equipment can sequentially comprise a pit belt conveyor and a bucket elevator according to the conveying sequence, wherein a conveying belt of the pit belt conveyor is positioned below blanking of the 9 hopper gates, namely a feeding end of the pit belt conveyor is communicated with the 9 hopper gates between the storehouse. In fig. 3, a denotes 9 hopper gates, B denotes a pit belt conveyor, C denotes a bucket elevator, and D denotes a loading hopper. According to the delivery sequence of the delivery bin, the materials in the delivery bin sequentially pass through A, B, C and D.

The stepper motor adjusts the opening and closing degree of the plurality of hopper gates by the rotation of the self output shaft 9. The motor driver is used for controlling the rotation of the output shaft 9 of the stepping motor, and a baffle plate 91 is fixedly connected to the circumference of the output shaft 9 of the stepping motor, and the baffle plate 91 can pass through the sensing end of the photoelectric switch 2 along with the rotation of the output shaft 9, so as to output a positioning signal to the circuit board of the motor driver. The motor driver, as an inventive gist of the present utility model, will be described in detail in the present embodiment:

referring to fig. 4 to 8, the present embodiment provides a motor driver, which includes a housing 1, a circuit board (not shown), a photoelectric switch 2, a connection terminal 7, and a heat dissipation fin 8.

The housing case 1 may include a cover 11 and a case 12. An opening is provided on one side of the housing 12, and the cover 11 is detachably attached to the side of the housing 12 having the opening, thereby forming an inner cavity structure of the housing 1.

Wherein, the cover 11 can be provided with a mounting groove 5, and the side wall of the mounting groove 5 is also provided with four hole sites 6 penetrating through the wall thickness of the cover 11, and the mounting groove 5 is communicated with the cavity through the four hole sites 6.

In this embodiment, an insulating sleeve 61 may be further embedded in each hole 6, and the insulating sleeve 61 may be made of a rubber material with a high friction coefficient.

In addition, the cover 11 may be provided with a plurality of screw holes 111, and accordingly, the housing 12 may be provided with a plurality of bolts 121, and the cover 11 and the housing 12 may be detachably connected by the relative screwing of the bolts 121 and the screw holes 111.

The circuit board can be installed in the inner cavity of the accommodating shell 1 through screws, the model of the circuit board can be HEQD-SC22, and the circuit board comprises a motor driving chip, a driving circuit and a main control chip. The motor driving chip and the driving circuit are connected with the main control chip, and the photoelectric switch 2 can be connected with the main control chip. The motor driving chip and the driving circuit are used for driving the motor to rotate, the motor driving chip can be a TRINAMIC driving chip, and the driving circuit can be an H-bridge driving circuit. The photoelectric switch 2 can collect the rotation condition of the motor, and when the baffle piece 91 on the motor rotating shaft shields the switch groove, the photoelectric switch 2 outputs a signal. The main control chip can adopt an ARM chip for controlling the motor driving chip, adjusting parameters such as a fraction value, a current value, a rotation direction and the like of the motor driving chip through reading the dial switch, collecting the output of the photoelectric switch, processing the output as a feedback signal or directly controlling the driving chip, and controlling the reset of the motor to be zero. The photoelectric switch 2 can be embedded in the mounting groove 5 on the cover 11, and four pins 21 of the photoelectric switch 2 respectively penetrate through the insulating sleeves 61 in the four hole sites 6 and extend into the inner cavity of the shell 12, so that the photoelectric switch is welded with the circuit board, the insulating sleeves 61 can play an insulating role, and the pins 21 can be limited on the other hand, so that the axial movement and radial shaking of the pins 21 are prevented. In some embodiments, the gap between the photoelectric switch 2 and the mounting groove 5 can be filled with anti-slip rubber, so that pretightening force is provided for the photoelectric switch 2, stability of the photoelectric switch 2 on the accommodating shell 1 is further improved, stable operation of the driver is guaranteed, and service life is prolonged.

In this embodiment, the photoelectric switch 2 may be a groove-type photoelectric sensor of the type ITR9606 or ITR-9608, which includes a light emitter 22 and a receiver 23 disposed opposite to each other, thereby forming a recess region 4 facing away from the housing case 1 as a sensing end of the photoelectric switch 2. Wherein the light emitter 22 can emit infrared light towards the receiver 23, which light signal can be received by the receiver 23 to generate a corresponding electrical signal, whereas in the opposite case a cover is present in the recess area 4, no photoelectric signal is present.

Wherein, the groove width of the groove area 4 is about 5mm, and correspondingly, the thickness of the baffle piece 91 fixed on the output shaft 9 is less than 5mm, so that the baffle piece can smoothly pass through the groove area 4. Whenever the blocking piece 91 is located at the initial position, or after the output shaft 9 of the motor rotates one turn, the blocking piece 91 can be located at the center of the groove area 4, so as to block the photoelectric signal, and the photoelectric switch 2 outputs a low level, and then outputs a low level to the circuit board. Thus, when the motor needs to be reset, whether the reset work is finished or not can be judged through the output signal of the photoelectric switch 2, and whether the position is accurate or not can be judged.

In addition, the connection terminal 7 may be fixedly mounted on the housing 12 adjacent to the cover 11 and electrically connected to the internal circuit board. The circuit board is connected to an external switching power supply via connection terminals 7, thereby powering the device.

The heat dissipation fins 8 may be provided in plural pieces according to the outer shape of the housing case 1 and mounted on the cover 11 in parallel, but may be mounted on the case 12 in other embodiments. In addition, the local radiating fin can be further provided with an avoidance area staggered with the photoelectric switch 2, namely the avoidance area surrounds the photoelectric switch 2 and is not interfered with each other, and meanwhile, the photoelectric switch 2 can be protected.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.

Claims

1. A motor driver comprises a housing shell and a circuit board arranged in an inner cavity of the housing shell; the device is characterized by further comprising a photoelectric switch; the photoelectric switch is arranged on one side outside the accommodating shell, and pins of the photoelectric switch penetrate through the accommodating shell and extend into an inner cavity of the accommodating shell, so that the photoelectric switch is welded with the circuit board.

2. A motor driver according to claim 1, wherein the optoelectronic switch employs a slot-type optoelectronic sensor comprising a light emitter and a receiver disposed opposite each other, thereby forming a recessed area facing away from the housing as a sensing end of the optoelectronic switch.

3. The motor driver according to claim 1, wherein a mounting groove communicating with the inner cavity is formed on one side of the housing outer portion; the photoelectric switch is embedded and fixed in the mounting groove.

4. A motor driver according to claim 3, wherein a plurality of hole sites penetrating the wall thickness of the housing are formed in the side wall of the mounting groove; the mounting groove is communicated with the cavity of the accommodating shell through the hole site, and pins of the photoelectric switch extend into the inner cavity of the accommodating shell from the hole site.

5. The motor driver of claim 4 wherein each of said hole sites further has embedded therein an insulating sleeve for enveloping said pins.

6. The motor driver according to claim 1, wherein the housing includes a cover and a case having an opening, the cover being detachably attached to a side of the case having the opening, thereby constituting an inner cavity structure of the housing.

7. The motor driver of claim 6, wherein one of the cover and the housing is provided with a plurality of screw holes, and the other is provided with a plurality of bolts, and further the detachable connection between the cover and the housing is realized by the threaded connection of the bolts and the screw holes.

8. The motor driver of claim 1, further comprising a connection terminal; the terminal is arranged on one side adjacent to one side of the accommodating shell with the photoelectric switch and is electrically connected with the circuit board; the circuit board is connected with an external switching power supply through the wiring terminal.

9. The motor drive of claim 1, further comprising a heat sink fin; the radiating fins are provided with a plurality of radiating fins and are connected on one side of the accommodating shell with the photoelectric switch in parallel.

10. A discharge flow control system, comprising:

the hopper gate is arranged at the bottom of one machinery bungalow and is used for adjusting the discharge flow of materials in the machinery bungalow;

a stepping motor for adjusting the opening and closing degree of the plurality of hopper gates by rotation of its own output shaft; and

a motor driver for controlling rotation of the stepper motor output shaft;

-characterized in that the motor driver is a motor driver according to any one of claims 1 to 9;

wherein, a baffle is fixedly connected with the circumferential direction of the output shaft of the stepping motor, the baffle can pass through the induction end of the photoelectric switch along with the rotation of the output shaft, and then a positioning signal is output to the circuit board of the motor driver.