Electric drive control device

Abstract

The invention relates to the field of automatic driving and unmanned driving of agricultural machinery, in particular to an electric drive control device which comprises an upper cover assembly, a disc body, a motor and a loudspeaker. A disc body mounting piece is arranged in the middle of the disc body, the motor comprises an upper shell and a motor shaft which penetrates through the upper shell and is connected with the disc body mounting piece, a circuit board is arranged in the upper shell, the circuit board is provided with a plurality of inductive switches, and the inductive switches are connected with the loudspeaker; a plurality of elastic sheets are arranged at the bottom of the disc body mounting piece, and inductive switch triggering parts are fixed on the lower surfaces of the outer sides of the elastic sheets; the lower surface of the upper cover assembly is provided with an upper cover top column, and the upper cover top column is sleeved with a spring and penetrates through the disc body installation piece to reach the upper portion of the upper surface of the outer side of the elastic piece. In the automatic driving or unmanned driving process, power is effectively supplied to the loudspeaker of the vehicle body or the loudspeaker is added, so that the loudspeaker makes a sound to attract the attention of people, the safety performance of the agricultural machine is greatly improved, and potential safety hazards are reduced.

Description

Technical Field

[0001] The present invention relates to the field of automatic driving and unmanned driving of agricultural machinery, and in particular to an electric drive control device. Background Art

[0002] In the field of automatic driving or unmanned driving of agricultural machinery, the control of agricultural machinery is usually driven by an electric drive control device to drive the steering and rotation of the agricultural machinery by driving the steering column of the agricultural machinery. The electric drive control device turns on the power supply to make the body horn make a sound, attracting people's attention and reducing personal risks. Therefore, the body horn function is very important.

[0003] In traditional or existing agricultural machinery, agricultural machinery automatic driving, and agricultural machinery unmanned driving related vehicles, electric drive control devices or mechanical triggering devices, etc., are usually carried out through cables or contact springs to turn on the circuit, and after a series of conduction, the body horn makes a sound.

[0004] The external cable trigger device is usually set at the steering wheel position, where the space is small, the cables or related windings are many, the cables are complex, the failure rate is high, and it is not easy to maintain. The electric steering wheel conducts the horn circuit through the contact point. In the harsh environment of agricultural machinery, it is easy to be blocked and adhered by wind, rain and sand, resulting in poor contact or failure of the horn circuit. In addition, during the vibration of agricultural machinery, there will be a phenomenon that the trigger cannot be turned on. It causes unnecessary losses to users or creates safety hazards.

[0005] Therefore, in this field, there is an urgent need for a device that can effectively conduct the vehicle body speaker circuit and is not easily damaged in such an environment. Summary of the invention

[0006] The present application provides an electric drive control device, which can simply and effectively conduct the vehicle body speaker circuit to make the vehicle body speaker make a sound, while at the same time not being easily eroded and affected by harsh environments such as wind, sand and rain in the agricultural field.

[0007] The object of the present invention is to provide an electric drive control device to solve the problems raised in the above background technology.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0009] An electric drive control device comprises an upper cover assembly, a disc body, a motor and a speaker;

[0010] A disc body mounting piece is provided in the middle of the disc body, the motor comprises an upper shell and a motor shaft penetrating the upper shell and connected to the disc body mounting piece, a circuit board is provided in the upper shell, the circuit board is provided with a plurality of induction switches, and the induction switches are connected to the speaker;

[0011] A plurality of spring sheets are provided at the bottom of the disk mounting member, and an induction switch triggering part is fixed on the lower surface of the outer side of the spring sheets;

[0012] The lower surface of the upper cover assembly is provided with an upper cover top column, the upper cover top column is sleeved with a spring and penetrates the disc body mounting piece to reach above the upper surface of the outer side of the spring sheet.

[0013] Preferably, the induction switch is a magnetically controlled sensor, and the corresponding induction switch triggering part is a magnet; or the induction switch is a Hall sensor, and the corresponding induction switch triggering part is a magnet; or the induction switch is a photoelectric sensor, and the corresponding induction switch triggering part is a reflective sticker; or the induction switch is a metal sensor, and the corresponding induction switch triggering part is a metal part. When the magnetically controlled switch is operated manually or in use, the on and off of the horn is not affected by the electric drive control device. The Hall sensor can set the corresponding sensitivity and the corresponding sensing height through software.

[0014] Preferably, a top column protrusion is provided at the bottom of the top column of the upper cover.

[0015] Preferably, the number of the upper cover top pillars is several and evenly distributed, the number of the spring sheets is several and evenly distributed, and the number of the induction switches is several and evenly distributed.

[0016] Preferably, the diameter of the spring gradually increases from top to bottom.

[0017] Preferably, the magnet is a magnetic ring.

[0018] Preferably, the magnetically controlled sensor is a reed switch.

[0019] Preferably, the upper cover top column is provided with an upper cover top column reinforcement rib, and the upper cover top column reinforcement rib has a taper.

[0020] Preferably, four threaded holes are provided above and below the motor shaft.

[0021] An automatic driving agricultural machine comprises: an electric drive control device as described in any one of the above items.

[0022] Compared with the prior art, the beneficial effects achieved by the present invention are: during the process of automatic driving or unmanned driving, the present application effectively provides power to the vehicle body horn, adopts contactless on-off control to make it make a sound, attract people's attention, greatly improve the safety performance of agricultural machinery, and reduce safety hazards.

[0023] Based on the structure of the original electric steering wheel, the present application installs an induction switch trigger structure at the bottom of the steering wheel body and an induction switch on the circuit board, thereby realizing wireless control of the speaker and avoiding many troubles of wired control. The structure is simple, the cost is low, and the safety is high, thereby achieving unexpected technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 is an overall exploded view of an embodiment of the present invention;

[0026] Figure 2 It is a diagram of the upper cover parts of an embodiment of the present invention;

[0027] Figure 3 It is a parts diagram of the upper housing of a motor according to an embodiment of the present invention;

[0028] Figure 4 is an internal wiring diagram of a motor according to an embodiment of the present invention;

[0029] Figure 5 It is an assembly plan view of an embodiment of the present invention;

[0030] Figure 6 yes Figure 5 Middle partial schematic diagram;

[0031] Figure 7 It is a schematic diagram of the fixing position of the wire nose screw;

[0032] Figure 8 is a schematic diagram of the overall structure of the photoelectric sensor used as an inductive switch in an embodiment of the present invention;

[0033] Fig. 9 yes Figure 8 Schematic diagram of the corresponding upper shell structure;

[0034] Among them, the upper cover assembly 012, the upper cover 1, the upper cover top column 2, the spring 3, the upper end of the spring 3-1, the lower end of the spring 3-2, the disk body 4, the mounting part 4-1, the positioning position 5, the disk body through hole 6, the magnetic ring assembly 078, the spring 7, the magnetic ring 8, the spring hole position 9, the spring screw 10, the upper shell 11, the upper shell hole position 11-1, the reed switch 12, the circuit board 13, the motor connector 14, the motor shaft 15, the circuit board cable 16, the connector 17, the pin hole 17-1, the circuit board screw 18, the circuit board cable 2 19, the stator hole position 20, the wire nose screw 21, the wire nose 21-1, the upper cover moving position 22, the spring pressing position 23, the top column protrusion 25, the motor 26, the lower shell 27, the lower shell internal threaded hole 28, the annular structure 30, the plastic part 31, the photoelectric sensor 32, and the upper shell hole position 2 34. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The present invention provides a technical solution, and the specific structure is referred to Figures 1 to 9 .

[0037] An unmanned electric drive device includes a steering wheel cover (hereinafter referred to as the cover), a spring, a disk body, screws, shrapnel, a magnetic ring, an upper shell, a reed switch, a circuit board, a motor, a wire nose, screws and other related components.

[0038] The spring is fixed to the upper cover through the upper cover top column, and multiple springs are fixed to the mounting piece in the middle of the disk body through spring screws. The magnetic ring is glued to the multiple springs through strong glue. The disk body is fixed to the upper end surface of the motor shaft through the hole on the mounting piece. The upper cover is connected to the steering wheel body. The reed switch is fixed to the circuit board and is evenly distributed. The circuit board passes through the circuit board hole through the circuit board screw and is fixed to the upper surface hole inside the upper shell. The reed switch is located between the upper surface inside the upper shell and the circuit board, and the circuit board does not affect the rotation of the internal rotor. The upper shell is fixed to the lower shell through screws. Two groups of cables come out of the circuit board, namely circuit board cable 1 and circuit board cable 2, both of which pass downward from the stator hole. Among them, one end of circuit board cable 1 is connected to a pin line hole on the motor connector through a connector, and the other end is connected to the circuit board, while one end of circuit board cable 2 is connected to the circuit board, and the other end is connected to the wire nose, which is fixed to the threaded hole inside the lower shell through the wire nose screw. The upper shell is fixed to the lower shell through screws.

[0039] Two cables are connected to the motor connector, which are respectively connected to the positive and negative poles of the speaker on the car body.

[0040] When people encounter a situation, they press any position of the upper cover, and at the same time, the upper cover top column located inside the upper cover moves downward, so that the upper cover assembly moves downward, contacts the spring located on the mounting part and moves downward, and at the same time drives the magnetic ring to move downward, and then the magnetic ring assembly moves downward. When the magnetic ring assembly moves downward, the magnetic ring carries a magnetic field. When the magnetic ring is very close to the reed switch, the magnetic field produces different polarities near the end point of the reed, so that the reed is magnetized and attracts the conduction circuit. At the same time, the speaker is turned on through the corresponding cable and makes a sound. When the external magnetic field moves away, the reed gradually demagnetizes, and the circuit is disconnected due to the separation of its own elastic contacts. At the same time, the speaker circuit is disconnected synchronously, and the sound is cut off.

[0041] Through contactless movement, the circuit is conducted, so that the speaker is powered on and off to make a sound.

[0042] The motor shaft contains four threaded holes on the top and bottom, and two spline connector installation methods can be used, the spline can be installed on the top or on the bottom. The upper end of the spline is fixed to the threaded hole of the motor shaft, and the lower end of the spline is fixed to the external spline of the agricultural machinery steering column.

[0043] Specific connection method

[0044] The upper cover includes an upper cover top column, an upper cover top column reinforcement rib with a taper, a spring through the upper end of the spring, fixed on the upper cover top column, 6 springs are fixed on the upper cover top column, forming an upper cover assembly, a mounting piece is located on the disk body, and multiple groups of holes are opened in the middle of the mounting piece. The spring piece is fixed on a group of holes on the mounting piece through the spring piece screw, and at the same time, a positioning convex point is opened near the spring piece hole, and is positioned at a positioning position near a group of holes on the mounting piece, so as to facilitate the determination of the spring piece installation position and spring piece installation direction. A total of multiple spring pieces are fixed to the mounting piece, located under the upper cover top column, and the upper cover top column moves along the Z direction through the disk body through the hole, and can squeeze the spring piece to move downward. The magnetic ring is pasted on all the spring pieces through high-strength glue, and is integrated with the spring piece to form a magnetic ring assembly. The magnetic ring assembly is located between the bottom of the mounting piece and the upper surface of the upper shell. Another set of holes on the mounting part is fixed to the four threaded holes on the upper end of the motor shaft through corresponding screws. The upper cover assembly is connected to the disk body through corresponding equally divided buckles. At the same time, there is a certain gap between the groove of the upper cover and the disk body. The upper cover is placed on the mounting part through 6 springs, and there is a certain rebound. By pressing the upper cover assembly, the upper cover assembly moves up and down along the Z direction between the groove of the upper cover and the disk body. At the same time, the top column of the upper cover squeezes the spring sheet to make the magnetic ring assembly move up and down along the Z direction.

[0045] The upper shell of the motor has a group of upper shell holes on its inner upper surface. Several reed switches are welded to the circuit board. The circuit board is fixed to the upper shell hole by screws through the mounting holes on the circuit board. The reed switch is located between the circuit board and the inner surface of the upper shell and does not contact the inner surface of the upper shell. The upper shell is made of aluminum.

[0046] There are two groups of wires connected to the circuit board, namely, circuit board cable 1 and circuit board cable 2. The two groups of cables are relatively close. The corresponding stator holes are opened on the stator so that the two groups of cables can pass through. In the stator hole, one end of the circuit board cable 1 is connected to the circuit board, and the other end is connected to a connector pin hole on the motor connector through a connector, and then connected to the negative pole of the vehicle body battery through the corresponding cable. At the same time, the motor connector extends the corresponding cable to connect to the positive pole of the speaker. One end of the circuit board cable 2 is connected to the circuit board, and the other end passes through the stator hole, connected to the wire nose, and passes through the hole on the wire nose through the wire nose screw, and is connected to the lower shell internal threaded hole on the lower shell, that is, through this hole, connected to the motor body, and then connected to the vehicle body, and then grounded. The upper shell is connected to the lower shell by screws.

[0047] When people press the upper cover assembly, the upper cover top column moves in the through hole of the disk body along the Z direction. The upper cover moving position end surface contains a top column convex point, which is used to squeeze the magnetic ring assembly. The spring receives pressure and moves synchronously along the Z direction. The spring pressing position gradually accumulates force, and the magnetic ring assembly moves downward. The reed switch attachment will provide a magnetic field, and the reed switch spring will generate magnetic force, attracting the conduction circuit, the speaker circuit, that is, conduction, and the speaker sounds. When the pressure disappears, the spring will rebound and reset due to its own pressure, and continue to support the upper cover to rebound to its original position. The magnetic ring is away from the upper surface of the motor upper shell, the magnetic field near the reed switch disappears, the reed switch spring is demagnetized, and the circuit is disconnected due to the separation of its own elastic contacts, and the speaker sound disappears.

[0048] At the same time, the speaker power can be controlled to be on and off, which also includes several such solutions.

[0049] By drawing power from the speaker power line to the circuit board, the circuit board controls the on and off of the speaker switch based on the collection and processing results of the sensor signal.

[0050] 1. Use Hall sensors. Install several Hall sensors inside the upper shell. Press the steering wheel to make the magnet approach without contact. When it reaches a certain distance, it generates a magnetic field, which makes the Hall sensor generate a control signal, triggering the internal circuit board of the motor to respond. Through the circuit board, the negative pole of the speaker is controlled to be on and off, thereby realizing the on and off of the speaker.

[0051] 2. Use photoelectric sensors. Multiple holes are opened on the upper surface of the motor upper shell, and multiple plastic parts are inlaid. Several photoelectric sensors are fixed on the same circuit board. The circuit board is fixed on hole one of the upper shell. Two cables extend through the circuit board and are electrically connected to the speaker through the inside for power supply. The corresponding magnet position can also be replaced with any annular structure. A circle of annular reflective sticker is pasted on the side closest to the photoelectric sensor. The upper cover is pressed from the outside to move the upper cover assembly downward. At the same time, the annular structure is squeezed downward to shorten the distance between the photoelectric sensor and the photoelectric sensor. The light emitted by the photoelectric sensor is reflected, and the transmitting tube of the photoelectric sensor emits light, which passes through hole two of the upper shell and hits the reflective sticker. The corresponding light is reflected back through the reflective sticker, passes through hole two of the upper shell, and is received by the receiving tube of the photoelectric sensor, generating a control signal, which is transmitted to the internal circuit board of the motor, triggering the internal circuit board of the motor to respond. The on and off of the negative pole of the speaker is controlled through the circuit board to realize the on and off of the speaker.

[0052] 3. Use metal sensors, that is, cancel the magnetic ring assembly, embed metal parts on the bottom surface of the top column of the upper shell, and install several metal sensors on the top surface of the upper shell of the motor to generate a magnetic field. By pressing the steering wheel, the top column corresponding to the upper shell moves downward. When the lower end of the top of the upper shell enters the magnetic field, the embedded metal parts cut the magnetic field. The metal sensor generates a signal and transmits it to the internal circuit board of the motor. The circuit board controls the on and off of the negative pole of the speaker to realize the on and off of the speaker.

[0053] The specific installation effects are as follows:

[0054] (1) The upper cover assembly includes an upper cover and an upper cover top column. The upper cover can move in the Z direction, compress the spring, or rebound.

[0055] (2) During the compression of the spring, the protrusion of the top column squeezes the magnetic ring assembly, causing the magnetic ring assembly to move downward.

[0056] (3) The spring assembly moves downward, generating a magnetic field near the reed switch, causing the reed switch spring to generate magnetic force, which closes the circuit.

[0057] (4) Since the sound of the speaker is controlled by the on-off of the reed switch, when the reed switch spring is closed, the circuit is turned on and the speaker sounds.

[0058] (5) The two internal cables pass through the stator hole, one end is connected to the motor connector, and the other end is connected to the threaded hole of the motor lower shell.

[0059] (6) Since this function only uses one pin on the motor connector, it is easy to use without major modifications to the motor.

[0060] (7) Only two cables are used, so no electromagnetic interference will be generated internally, and the normal operation of the motor will not be affected.

[0061] (8) Cover the top column and design the top column bump to make the response more sensitive and improve the circuit conductivity.

[0062] Innovation:

[0063] 1) Reed switches are used in an electric drive control device and in the agricultural field to form an opening and closing circuit and control the sound of a speaker.

[0064] 2) It adopts contactless, open and close circuit, which has strong applicability, low failure rate and guaranteed quality in the harsh agricultural environment.

[0065] 3) The magnetic ring is installed below the structure on the disk, which has strong protection and is not easy to be damaged.

[0066] 4) The reed switch is designed inside the motor and is not easy to be damaged. At the same time, the shell is made of aluminum, which will not interfere with the magnetic field, ensuring the accuracy and timeliness of the speaker's on and off.

[0067] 5) There are threading holes on the stator inside, so the circuit will not be damaged when the motor is working, thus increasing the service life of the equipment.

[0068] 6) At the same time, the shell is connected through a wire and grounded through the shell. The equipment is highly safe and there will be no personal safety issues.

[0069] 7) Using one of the pins of the motor connector does not affect the design of the original equipment and does not require too many changes or adjustments.

[0070] 8) The magnetic ring is fixed on multiple retaining rings, which is firmly installed and not easy to fall off or be damaged.

[0071] 9) Multiple reed switches are used inside the motor, which have sensitive magnetic field sensing and high accuracy in power on and off.

[0072] 10) The mounting parts fix multiple retaining springs to ensure that the user can exert effective force on the upper cover in any direction.

[0073] 11) The retaining ring adopts the positioning convex point positioning method, which can improve the installation efficiency and accuracy.

[0074] 12) The top column of the upper cover is designed with multiple reinforcing ribs, one for strengthening the strength of the upper cover, and the other for fixing the spring firmly to prevent it from falling off. If necessary, the spring can be fixed with glue.

[0075] 13) During the process of connecting the circuit board cable to the motor connector, a connector is designed for plugging and unplugging, which can effectively improve the assembly time of the whole machine and facilitate subsequent repairs.

[0076] 14) Four threaded holes are designed on the upper and lower parts of the motor shaft. Depending on the space size of the agricultural machinery steering wheel, it is convenient for technicians to install it by using the bottom spline method or the top spline method.

[0077] 15) The mounting piece has multiple sets of holes and positioning positions to facilitate the installation of the retaining ring and the installation of the disc body on the motor shaft. Or the installation of the spline on the mounting piece.

[0078] 16) The top column end surface of the upper cover is designed with a convex point to facilitate the extrusion of the magnetic ring assembly to be more sensitive and efficient.

[0079] 17) An electric drive control device, after installation, can make the original vehicle body horn normally connected and used, and can also be equipped with a corresponding horn for agricultural machinery without a horn to make it sound.

[0080] 18) The device adopts contactless conduction, without complicated cables and contact conduction, which improves product quality.

[0081] Reduce failure rate.

[0082] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0083] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electric drive control device, characterized in that: It includes an upper cover assembly, a plate body, a motor and a speaker; A disc body mounting piece is provided in the middle of the disc body, the motor comprises an upper shell and a motor shaft penetrating the upper shell and connected to the disc body mounting piece, a circuit board is provided in the upper shell, the circuit board is provided with a plurality of induction switches, and the induction switches are connected to the speaker; A plurality of spring sheets are provided at the bottom of the disk mounting member, and an induction switch triggering part is fixed on the lower surface of the outer side of the spring sheets; The lower surface of the upper cover assembly is provided with an upper cover top column, the upper cover top column is sleeved with a spring and penetrates the disc body mounting piece to reach above the upper surface of the outer side of the spring sheet.

2. The electric drive control device according to claim 1, characterized in that: The induction switch is a magnetically controlled sensor, and the corresponding induction switch triggering part is a magnet; or the induction switch is a Hall sensor, and the corresponding induction switch triggering part is a magnet; or the induction switch is a photoelectric sensor, and the corresponding induction switch triggering part is a reflective sticker; or the induction switch is a metal sensor, and the corresponding induction switch triggering part is a metal part.

3. The electric drive control device according to claim 1, characterized in that: A top column convex point is arranged at the bottom of the top column of the upper cover.

4. The electric drive control device according to claim 1, characterized in that: The number of the top cover pillars is several and evenly distributed, the number of the spring sheets is several and evenly distributed, and the number of the induction switches is several and evenly distributed.

5. The electric drive control device according to claim 1, characterized in that: The diameter of the spring increases gradually from top to bottom.

6. The electric drive control device according to claim 2, characterized in that: The magnet is a magnetic ring.

7. The electric drive control device according to claim 2, characterized in that: The magnetically controlled sensor is a reed switch.

8. The electric drive control device according to claim 1, characterized in that: The upper cover top column is provided with an upper cover top column reinforcement rib, and the upper cover top column reinforcement rib has a taper.

9. The electric drive control device according to claim 1, characterized in that: Four threaded holes are arranged on the upper and lower parts of the motor shaft.

10. An automatic driving agricultural machine, characterized in that: include: An electric drive control device as claimed in any one of claims 1 to 9.

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