CN211580701U

CN211580701U - Hand-held electric preserved szechuan pickle cutter

Info

Publication number: CN211580701U
Application number: CN201922150975.3U
Authority: CN
Inventors: 叶进; 杨仕; 李晓东
Original assignee: Southwest University
Current assignee: Southwest University
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-09-29
Anticipated expiration: 2029-12-04

Abstract

The utility model discloses an electronic preserved szechuan pickle cutterbar of hand-held type, including handheld sleeve pipe, install saw bit and the handle at handheld sleeve pipe both ends respectively, the saw bit is connected with and drives its pivoted motor, and motor fixed mounting is in the rear end of handle, and the hollow setting of handheld intraduct portion, the rotor of motor are connected with the axle center of saw bit through passing the transmission mechanism of handheld intraduct, and the motor electricity is connected with the singlechip. When the preserved szechuan pickle is harvested, the motor is no longer positioned at the front end of the handheld sleeve, so that the defect of blocking the cutting part of the preserved szechuan pickle is overcome; in addition, the singlechip controls the voltage of the motor in a pulse width modulation mode, so that the rotating speed of the motor is stabilized at the set rotating speed required by harvesting the preserved szechuan pickle no matter how the load changes, the rotating speed can be adjusted by adjusting the voltage for cutting other kinds of vegetables or plants, the stability is good, and the automation degree is high; in addition, the single chip microcomputer is also electrically connected with a temperature sensor, a current sensor and a voltage sensor, and plays a role in monitoring and protecting the motor and the battery.

Description

Hand-held electric preserved szechuan pickle cutter

Technical Field

The utility model relates to the technical field of agricultural machinery, especially, relate to an electronic preserved szechuan pickle cutterbar of hand-held type for reaping leaf vegetables such as preserved szechuan pickle.

Background

When the preserved szechuan pickle is harvested, the leaf and the root of the preserved szechuan pickle need to be removed, and the part of the preserved szechuan pickle is harvested. The preserved szechuan pickle results, cuts the leaf and cuts the root process, needs stable cutting speed, and cutting speed is too high can splash, the breakage, and cutting speed is low excessively can produce and tear, and cutting process load changes great and frequent.

The structure of the prior handheld electric mower adopting the scheme of the front motor is shown in figure 1, and comprises a cutter bar 1, a saw blade 2 arranged at the front end of the cutter bar 1 and a motor 3 for driving the saw blade, wherein the rear end of the cutter bar is provided with a handle 4, the middle part of the cutter bar is provided with a handle 5 and a sling mount 6, the sling mount 6 is connected with a sling, the handle 4 is provided with a start-stop switch 7 for controlling the motor 3, and the motor 3 is externally connected with a power supply or a battery; when the harvester is used for harvesting the preserved szechuan pickle, the motor 3 is close to the saw blade 2, so that the cutting part of the preserved szechuan pickle is easily blocked by the huge volume of the harvester, and the preserved szechuan pickle is difficult to cut; the adopted motor is a permanent magnet synchronous motor, an inverter is needed to convert a battery direct current power supply into alternating current for driving, the product is constant-frequency inversion, has no rotating speed feedback and setting functions, and cannot select or set the cutting speed by a user; another hand-held electric mower is a mode of a rear direct current permanent magnet motor, and has no rotating speed setting and rotating speed feedback control functions.

Those skilled in the art have therefore endeavored to develop a hand-held power cutter with a rotational speed setting and automatic rotational speed stabilization for harvesting mustard tuber and other vegetables.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defects in the prior art, the technical problem to be solved in the present invention is to provide a hand-held electric cutter with rotation speed setting and rotation speed automatic stabilization functions.

In order to realize the above object, the utility model provides an electronic preserved szechuan pickle cutterbar of hand-held type, include handheld sleeve pipe, install respectively the saw bit and the handle at handheld sleeve pipe both ends, the saw bit is connected with and drives its pivoted motor, on hand install with the start-stop switch that the motor electricity is connected, motor fixed mounting is in the rear end of handle, the hollow setting in handheld sleeve pipe inside, the rotor of motor is through passing handheld sheathed tube inside drive mechanism with the axle center of saw bit is connected, the motor electricity is connected with the singlechip.

The single chip microcomputer is arranged on a control circuit board fixedly installed at the rear end of the motor, the single chip microcomputer is further electrically connected with a start-stop switch, a function selection switch, a battery, a DC/DC conversion circuit, a driving circuit, a power tube and a rotating speed sensor, the motor is a direct-current permanent magnet motor, the battery is electrically connected with the single chip microcomputer through the DC/DC conversion circuit, the single chip microcomputer is sequentially and electrically connected with the driving circuit, the power tube and the motor, the motor is further electrically connected with the single chip microcomputer through the rotating speed sensor, and the function selection switch is arranged on the handle.

The rotating speed sensor comprises a Hall element electrically connected with the single chip microcomputer and a permanent magnet matched with the Hall element, a rear cover is installed at the rear end of the motor, the Hall element and the control circuit board are installed in the rear cover, the permanent magnet is fixedly installed in the center of the end portion of the rotating shaft of the rotor, and the Hall element surrounds the permanent magnet.

The singlechip is also electrically connected with a temperature sensor.

The single chip microcomputer is also electrically connected with a current sensor, and two ends of the current sensor are also electrically connected with the battery and the power tube respectively.

The single chip microcomputer is also electrically connected with a voltage sensor, and two ends of the voltage sensor are also electrically connected with the battery and the power tube respectively.

The handheld sleeve pipe is characterized in that one end of the handheld sleeve pipe is further provided with a dish supporting device located above the saw blade, and the dish supporting device is composed of a horizontally arranged partition plate and an arc-shaped baffle plate which is integrally arranged on the top of the partition plate and vertically extends upwards.

The radius of the partition plate is slightly larger than that of the saw blade and covers part of cutter teeth of the saw blade; the height of the arc-shaped baffle plate is larger than the radius of the saw blade.

The front end of the handle is provided with a retaining ring for retaining the handheld sleeve, the rear end of the handle is provided with a motor fixing ring, and the front end of a stator of the motor is connected with a connecting seat.

A fan and a fan fixing seat are further arranged between the front end of the stator and the connecting seat, the fan is fixedly sleeved on a rotating shaft of the rotor, and the connecting seat is provided with a through heat dissipation hole; the fan fixing seat is provided with a threaded hole, the connecting seat is provided with a through hole, and the motor fixing ring is provided with a bolt which penetrates through the through hole and is in threaded connection with the threaded hole.

The utility model has the advantages that: the utility model discloses an electronic preserved szechuan pickle cutterbar of hand-held type, including handheld sleeve pipe, install saw bit and the handle at handheld sleeve pipe both ends respectively, the saw bit is connected with and drives its pivoted motor, installs opening the stop switch of being connected with the motor electricity on hand, and motor fixed mounting is in the rear end of handle, the hollow setting of handheld cover intraduct, and the rotor of motor is connected with the axle center of saw bit through passing the transmission mechanism of handheld cover intraduct, and the motor electricity is connected with the singlechip. When the preserved szechuan pickle is harvested, the motor is no longer positioned at the front end of the handheld sleeve, so that the defect of blocking the cutting part of the preserved szechuan pickle is overcome; in addition, the single chip microcomputer controls the voltage of the motor in a pulse width modulation mode, the rotating speed of the motor is stabilized at the set rotating speed required by harvesting of the preserved szechuan pickle no matter how the load changes, the rotating speed can be adjusted by adjusting the voltage to be used for cutting other kinds of vegetables or plants, the stability is good, and the automation degree is high.

Drawings

FIG. 1 is a schematic view of a prior art hand-held electric mower;

fig. 2 is a schematic structural diagram of the present invention;

fig. 3 is a schematic diagram of the circuit principle structure of the present invention;

fig. 4 is a structural sectional view of the present invention;

FIG. 5 is an exploded view of the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 5;

FIG. 7 is a schematic diagram of the front structure of the elastic buffer ring;

FIG. 8 is a schematic view of the back structure of the elastic buffer ring;

fig. 9 is a schematic view of the structure of the saw blade.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, wherein it is noted that, in the description of the invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular manner, and therefore should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 2 to 8, a handheld electric preserved szechuan pickle cutter comprises a handheld sleeve 16, a saw blade 2 and a handle 4 which are respectively arranged at two ends of the handheld sleeve 16, wherein the saw blade 2 is connected with a motor 3 for driving the saw blade to rotate, a start-stop switch 7 electrically connected with the motor 3 is arranged on the handle 4, the motor 3 is fixedly arranged at the rear end of the handle 4, the handheld sleeve 16 is arranged in a hollow manner, a rotor 8 of the motor 3 is connected with the axis of the saw blade 2 through a transmission mechanism penetrating through the interior of the handheld sleeve 16, the motor 3 is electrically connected with a single chip microcomputer, the motor 3 is a direct current permanent magnet motor, and the handheld electric; when the preserved szechuan pickle is harvested, the motor 3 is no longer positioned at the front end of the handheld sleeve 16, so that the defect of blocking the cutting part of the preserved szechuan pickle is overcome; in addition, the single chip microcomputer controls the voltage of the motor in a pulse width modulation mode, the rotating speed of the motor is stabilized at the set rotating speed required by harvesting of the preserved szechuan pickle no matter how the load changes, the rotating speed can be adjusted by adjusting the voltage to be used for cutting other kinds of vegetables or plants, the stability is good, and the automation degree is high.

In this embodiment, the singlechip is arranged on a control circuit board 9 fixedly installed at the rear end of the motor 3, the singlechip is further electrically connected with a start-stop switch 7, a function selection switch 10, a battery, a DC/DC conversion circuit, a driving circuit, a power tube and a rotation speed sensor, the battery is electrically connected with the singlechip through the DC/DC conversion circuit, the singlechip is sequentially electrically connected with the driving circuit, the power tube and the motor 3, the motor 3 is further electrically connected with the singlechip through the rotation speed sensor, the function selection switch 10 is arranged on the handle 4, and the function selection switch 10 is used for adjusting the rotation speed of the motor so as to meet different cutting requirements. Under the ordinary cutting function, start-stop switch 7 controls the cutter to start and stop, does not control the motor speed, and the control speed is higher, and the rotational speed drops greatly when having cutting load, does not have overload protection ability. The function is used for cutting branches, trimming hedges, mowing grass and the like.

The rotating speed sensor comprises a Hall element 12 electrically connected with the single chip microcomputer and a permanent magnet 11 matched with the Hall element 12, a rear cover 15 is installed at the rear end of the motor 3, the Hall element 12 and a control circuit board 9 are installed in the rear cover 15, the permanent magnet 11 is fixedly installed in the center of the end portion of a rotating shaft of the rotor 8, the Hall element 12 surrounds the permanent magnet 11, when the rotor 8 rotates, the Hall element 12 measures a pulse signal, and the frequency of the pulse signal reflects the rotating speed of the shaft of the motor 3.

In this embodiment, the single chip is also electrically connected with a temperature sensor; the single chip microcomputer is also electrically connected with a current sensor, and two ends of the current sensor are also electrically connected with the battery and the power tube respectively. When the temperature sensor detects that the temperature of the motor is too high, the motor 3 stops working and enters a temperature protection state. When the current sensor detects that the current of the motor continuously exceeds the overload protection current, the motor enters a load protection state; when the current of the motor 3 exceeds the locked-rotor protection current, the motor enters a load protection state; when the load protection state is entered, the motor 3 is stopped, and the load protection state lasts for two seconds, and during these 2 seconds, the motor 3 does not operate even if the start-stop switch 7 is pressed. After two seconds, the load protection state is released, the start-stop switch 7 is pressed, and if the conditions needing protection, such as locked rotor, overload, overhigh temperature and the like, do not exist, the motor 3 can run.

The singlechip is also electrically connected with a voltage sensor, and two ends of the voltage sensor are also electrically connected with the battery and the power tube respectively. When the voltage sensor monitors that the power supply voltage is too low, the system enters an undervoltage protection state, and the motor 3 stops working so as to prevent the over-discharge of the battery power supply.

The control circuit board 9 is also provided with a loudspeaker and an interface of an alarm indicator light which are electrically connected with the single chip microcomputer, and after the loudspeaker and the alarm indicator light are connected with the interface, corresponding acousto-optic state indication is provided under each protection state.

Under the function of harvesting the preserved szechuan pickle, a motor soft start function is also arranged. And (3) pressing the start-stop switch 7, and controlling the power supply voltage of the motor to gradually rise by the single chip microcomputer within 0.5 second to finish the starting of the motor. This can reduce the starting current, reduce the impact on the battery power supply, power device on the control circuit board, improve the reliability and durability of the system.

One end of the handheld sleeve 16 is also provided with a vegetable holding device which is positioned above the saw blade 2 and consists of a partition plate 13 which is horizontally arranged and an arc-shaped baffle plate 14 which is integrally arranged at the top of the partition plate 13 and vertically extends upwards; in the embodiment, the radius of the partition 13 is slightly larger than that of the saw blade 2 and covers part of the cutter teeth of the saw blade 2, and only the front cutter teeth are exposed for cutting; the height of the arc-shaped baffle plate 14 is larger than the radius of the saw blade 2, so that the arc-shaped baffle plate is used for containing cut vegetable leaves, vegetable heads and the like, and meanwhile, adjacent plants can be blocked during cutting, so that the adjacent plants cannot be accidentally injured during cutting, and the cutting integrity of a single plant is ensured.

The front end of the handle 4 is provided with a retaining ring 17 for retaining the hand-held sleeve 16, the rear end is provided with a motor fixing ring 18, and the front end of a stator 19 of the motor 3 is connected with a connecting seat 20; a fan 21 and a fan fixing seat 22 are further installed between the front end of the stator 19 and the connecting seat 20, the fan 21 is fixedly sleeved on a rotating shaft of the rotor 8, and the connecting seat 20 is provided with a through heat dissipation hole 43 which provides a heat dissipation function when the motor runs; fan fixing base 22 is provided with screw hole 23, and connecting seat 20 is provided with through-hole 24, and motor retainer plate 18 is provided with the bolt that passes through-hole 24 and threaded connection screw hole 23, and simple structure makes things convenient for the dismouting maintenance.

The front end of the hand-held sleeve 16 is integrally provided with a steering transmission box 25, the axis of the saw blade 2 is connected with a power input shaft 26, and a transmission mechanism passes through the hand-held sleeve 16 and the steering transmission box 25 to connect the power input shaft 26 with the rotating shaft of the rotor 8.

A protective ring 36 extending downwards is integrally arranged at the bottom of the steering transmission box 25, an elastic buffer ring 27 sleeved on the power input shaft 26 is arranged on the protective ring 36, a buffer groove 28 for the protective ring 36 to be embedded axially is arranged on one surface of the elastic buffer ring 27, a limit table 29 protruding axially is arranged on the other surface of the elastic buffer ring 27, and a limit groove 30 for the limit table 29 to be embedded is arranged at the axis part of the saw blade 2; the power input shaft 26 is integrally provided with a drive gear 31, and the elastic buffer ring 27 is provided with a gear sleeve 32 engaged with the drive gear 31.

An upper cover 33 covered on the elastic buffer ring 27 is also arranged between the bottom of the clapboard 13 and the saw blade 2, the upper cover 33 ensures the cleanliness of the power input shaft 26 and the elastic buffer ring 27 and avoids dust entering; baffle 13 is provided with three equilateral arrangement's locating hole 40, the bottom of turning to transmission box 25 is provided with location connecting seat 34, location connecting seat 34 is provided with the reference column 35 of embedding locating hole 40, the front end of power input shaft 26 is provided with the external screw thread, threaded connection has fixing bolt 37 behind the baffle 13 is passed to the front end of power input shaft 26, still cup joint lower cover 38 and the shock attenuation dish 39 that is located between saw bit 2 and fixing bolt 37 on the power input shaft 26, lower cover 38 covers and establishes on shock attenuation dish 39, moreover, the steam generator is simple in structure, and the assembly is convenient.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides an electronic preserved szechuan pickle cutterbar of hand-held type, includes handheld sleeve pipe (16), installs respectively saw bit (2) and handle (4) at handheld sleeve pipe (16) both ends, saw bit (2) are connected with and drive its pivoted motor (3), install on handle (4) with start-stop switch (7), characterized by that motor (3) electricity is connected: the motor (3) is fixedly installed at the rear end of the handle (4), the interior of the handheld sleeve (16) is hollow, a rotor (8) of the motor (3) penetrates through a transmission mechanism in the handheld sleeve (16) and is connected with the axis of the saw blade (2), and the motor (3) is electrically connected with a single chip microcomputer.

2. The hand-held, electrically powered mustard tube cutter of claim 1, wherein: the single chip microcomputer is arranged on a control circuit board (9) fixedly arranged at the rear end of the motor (3), the single chip microcomputer is further electrically connected with a start-stop switch (7), a function selection switch (10), a battery, a DC/DC conversion circuit, a driving circuit, a power tube and a rotating speed sensor, the motor (3) is a direct-current permanent magnet motor, the battery is electrically connected with the single chip microcomputer through the DC/DC conversion circuit, the single chip microcomputer is sequentially and electrically connected with the driving circuit, the power tube and the motor (3), the motor (3) is further electrically connected with the single chip microcomputer through the rotating speed sensor, and the function selection switch (10) is arranged on the handle (4).

3. The hand-held, electrically powered mustard tube cutter of claim 2, wherein: the rotating speed sensor is characterized by comprising a Hall element (12) electrically connected with the single chip microcomputer and a permanent magnet (11) matched with the Hall element (12), a rear cover (15) is installed at the rear end of the motor (3), the Hall element (12) and the control circuit board (9) are installed in the rear cover (15), the permanent magnet (11) is fixedly installed at the center of the end part of a rotating shaft of the rotor (8), and the Hall element (12) surrounds the permanent magnet (11).

4. The hand-held electric mustard tube cutter as claimed in claim 1 or 2, wherein: the singlechip is also electrically connected with a temperature sensor.

5. The hand-held, electrically powered mustard tube cutter of claim 2, wherein: the single chip microcomputer is also electrically connected with a current sensor, and two ends of the current sensor are also electrically connected with the battery and the power tube respectively.

6. The hand-held, electrically powered mustard tube cutter of claim 2, wherein: the single chip microcomputer is also electrically connected with a voltage sensor, and two ends of the voltage sensor are also electrically connected with the battery and the power tube respectively.

7. The hand-held, electrically powered mustard tube cutter of claim 1, wherein: one end of the handheld sleeve (16) is further provided with a vegetable holding device located above the saw blade (2), and the vegetable holding device is composed of a horizontally arranged partition plate (13) and an arc-shaped baffle plate (14) which is integrally arranged at the top of the partition plate (13) and vertically extends upwards.

8. The hand-held, electrically powered mustard tube cutter of claim 7, wherein: the radius of the clapboard (13) is slightly larger than that of the saw blade (2) and covers part of cutter teeth of the saw blade (2); the height of the arc-shaped baffle plate (14) is larger than the radius of the saw blade (2).

9. The hand-held, electrically powered mustard tube cutter of claim 1, wherein: the front end of the handle (4) is provided with a retaining ring (17) for retaining the handheld sleeve (16), the rear end of the handle is provided with a motor fixing ring (18), and the front end of a stator (19) of the motor (3) is connected with a connecting seat (20).

10. The hand-held, electrically powered mustard tube cutter as claimed in claim 9, wherein: a fan (21) and a fan fixing seat (22) are further installed between the front end of the stator (19) and the connecting seat (20), the fan (21) is fixedly sleeved on a rotating shaft of the rotor (8), and the connecting seat (20) is provided with a through heat dissipation hole (43); the fan fixing seat (22) is provided with a threaded hole (23), the connecting seat (20) is provided with a through hole (24), and the motor fixing ring (18) is provided with a bolt which penetrates through the through hole (24) and is in threaded connection with the threaded hole (23).