WO2017215051A1

WO2017215051A1 - Power equipment and control method

Info

Publication number: WO2017215051A1
Application number: PCT/CN2016/088720
Authority: WO
Inventors: 蒋锋
Original assignee: 常州格力博有限公司
Priority date: 2016-06-14
Filing date: 2016-07-05
Publication date: 2017-12-21

Abstract

Disclosed is a power equipment, comprising a drive motor located within a shell of the power equipment, with the drive motor providing self-propelled power; and a control system, comprising a guide rail (2) fixed on a push rod (1) extending from the shell, and a panel assembly (3) sliding along the guide rail. The drive system is provided with a locking assembly capable of converting between an artificial power drive mode and a self-drive mode. The power equipment can solve the problem of speed control during movement.

Description

Power equipment and control method

Technical field

The invention relates to the field of garden tools, in particular to a power device and a control method.

Background technique

At present, the self-propelled lithium electric pusher speed regulation in the industry generally controls the speed of the machine by dialing the speed control switch. Inspired by the inductive function of the human body. When we push the machine, we will be affected by the ground resistance, the unevenness of the ground, the slope and many other factors that affect the speed of the pusher and the user.

Summary of the invention

The technical problem to be solved by the present invention is to provide a power device and a control method capable of adjusting the speed of the lawn mower according to the magnitude of the thrust applied by the user.

In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a power device including: a driving motor located in a power device housing to provide self-propelled power; a motor located in the power device housing to provide rotational power; The control system includes a rail mounted on a push rod extending from the housing, and a panel assembly that slides the rail; the drive system is provided with a locking assembly that switches between a manual power drive and a self-propelled drive mode. Convenient for the operator.

In a preferred embodiment of the invention, the panel assembly includes a sliding potentiometer, and the sliding electric The positioner includes a potentiometer base and a sliding pin movably connected to the potentiometer base, the sliding potentiometer being connected to a driving motor for controlling the speed of the power device, the driving motor being on the potentiometer base according to the sliding needle The moving distance is used to change the speed to adjust the speed of the power. The output signal of the sliding positioner is transmitted to the motor control circuit to control the output power of the driving motor.

In a preferred embodiment of the present invention, the panel assembly is provided with a locking assembly, and the locking assembly includes a knob to which at least one lock shaft that is engaged with the push rod is coupled.

In a preferred embodiment of the present invention, the sliding potentiometer includes a front adjustment distance and a rear adjustment distance, and the acceleration generated when the sliding needle moves within the front adjustment distance is smaller than when the sliding needle moves within the rear adjustment distance. Acceleration. Since the adjustment distance of the front section is the self-propelled start-up phase, the operator walks slowly, so the acceleration is small, and the operator can be provided with a certain reaction time.

In a preferred embodiment of the present invention, the potentiometer base is fixedly disposed on the rail, and the sliding end is fixedly disposed on the panel assembly.

In a preferred embodiment of the present invention, the potentiometer base is fixedly disposed on the panel assembly, and the sliding end is fixedly disposed on the rail.

In a preferred embodiment of the invention, the knobs are provided with locking shafts on both sides thereof, and the locking shafts are inserted into the push rod holes of the push rods to lock the panel assembly.

In a preferred embodiment of the invention, the knob is in contact with a self-propelled switch, and the rotation of the knob controls the on and off of the self-propelled switch.

In a preferred embodiment of the invention, the panel assembly is provided with a reset lever. The reset lever is used to automatically return the panel assembly to its original position. The initial position has a velocity of zero.

In a preferred embodiment of the present invention, the panel assembly is provided with a safety starting device, and the safety starting device comprises a button assembly, a connecting component and an operating component, and the button assembly moves downward The communication component connects the connection component to the operation component, and the movement operation component moves the communication component to press the self-propelled switch to trigger the self-propelled switch.

The invention also provides a method for controlling the propulsion of a self-propelled power device,

A) providing a variable speed automatic propulsion power plant, the power equipment comprising:

i) an outer casing to which a drive motor is attached and with a shifting transmission for propelling the power plant;

Ii) a handle attached to the outer casing, comprising a push rod and a panel assembly;

Iii) a locking assembly that controls the opening of the self-propelled drive motor and the locking of the control panel;

Iv) variable speed slide controller, according to the relative displacement of the panel assembly and the push rod held by the operator is proportional to the output power of the drive motor;

B) When the operator wants to drive the motor, rotate the locking component to open the self-propelled drive motor and unlock the control panel. The operator pushes the panel assembly. The relative displacement of the panel assembly and the push rod, signal output, and self-driven power equipment. The operator wants to lock the locking component when manually driven. Since the locking function is integrated with the switching function on the locking component, when the control panel is locked, the self-propelled driving motor is turned off. The purpose of the drive mode conversion is achieved.

The invention provides a power device comprising a drive motor located in a power device housing, providing self-propelled power; and a control system comprising a guide rail fixed on a push rod extending from the housing, and a panel assembly sliding the guide rail; The power device comprises a locking component, which can fix the walking speed of the power device to different values, and switch the driving mode of the power device by shifting self-propelled, fixed speed self-propelled, and manual self-propelled.

In a preferred embodiment of the invention, the power unit includes a locking assembly that fixes the travel speed of the power unit to a certain value. The fixing method is the way to position the hole or lock the slider.

In a preferred embodiment of the present invention, the push rod has positioning holes at different positions, and when the panel assembly is locked at different positioning hole positions, the traveling speed is also fixed at different values. The value is a minimum of 0 and a maximum of 3.5 m/s.

The invention also provides a method of controlling the propulsion of a self-propelled power device:

Iii) controlling the switch to control the opening of the self-propelled driving motor;

Iv) locking the component and controlling the locking of the control panel;

v) a variable speed slide controller, which is proportional to the output power of the drive motor according to the relative displacement of the panel assembly and the push rod held by the operator;

B) controlling the opening and closing of the switch to complete the transition of the self-propelled drive and the manual drive mode;

C) When the control switch is turned on, the locking component is locked and unlocked, and the transition of the fixed speed self-propelled driving and the variable speed self-propelled driving mode is completed.

In a preferred embodiment of the invention, the power equipment is a lawn mower, a snow blower, and a ripper.

In a preferred embodiment of the present invention, the mowing function control system and the self-propelled drive control system of the lawn mower are independent systems.

The beneficial effects of the present invention are: the power device and the control method of the present invention can adjust the speed of the lawn mower according to the magnitude of the thrust applied by the user.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained according to these drawings without any creative work, wherein:

1 is a schematic structural view of a movable panel structure of a lawnmower according to a preferred embodiment of the present invention;

Figure 2 is a schematic view showing the reset state of the movable panel structure shown in Figure 1;

Figure 3 is an exploded perspective view showing the structure of the movable panel shown in Figure 1;

Figure 4 is a schematic structural view of the lower panel shown in Figure 3;

Figure 5 is a schematic view showing the movement state of the reset lever shown in Figure 3;

Figure 6 is a schematic structural view of a start switch device of a grass pusher;

Figure 6 is a partial structural schematic view of the starting switch device shown in Figure 6;

Figure 8 is a schematic view showing the open state of the start switch device shown in Figure 6;

Figure 9 is a schematic structural view of a sliding potentiometer of a grass pusher;

Figure 10 is a schematic structural view of a self-propelled locking device of a grass pusher;

Figure 11 is a cross-sectional view of the self-propelled locking device of Figure 10;

Figure 12 is a partial structural view of the self-propelled locking device shown in Figure 11;

Figure 13 is a partial structural view of the self-propelled locking device shown in Figure 11;

Figure 14 is a schematic structural view of a safety starter of a grass pusher;

Figure 15 is a schematic view showing the closed state of the safety starting device of the lawnmower;

Figure 16 is a schematic view showing the opening state of the safety starting device of the lawnmower;

17 is a control flow of a lawn mower according to an embodiment of the present invention;

18 is a control flow of a lawn mower according to another embodiment of the present invention;

The components of the drawings are marked as follows: 1, push rod, 2, guide rail, 3, panel assembly, 11, reset lever, 12, reset lever return torsion spring, 13, main rod, 14, sub-rod, 31, upper Panel, 32, lower panel, 33, card slot, 34, self-propelled switch, 41, button assembly, 42, operating components, 43, connecting components, 422, pull plate, 411, indenter, 431, sliding plate, 432, Mounting plate, 423, gear, 424, rack, 425, snap groove, 433, raised structure, 412, button, 426, pull plate return spring, 434, hook plate torsion spring, 413, button reset compression spring 5, sliding potentiometer, 51, potentiometer base, 52, slip needle, 61, self-propelled key, 62, knob, 63, lock shaft, 64, button body, 65, buckle groove, 66, positioning hole, 67 Positioning post, 68, self-propelled key button, 69, key reset compression spring, 7, key, 71, tie rod, 72, start switch, 73, pressure seat, 74, movable contact block, 75, elastic connection.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all of those obtained by those of ordinary skill in the art without creative efforts The embodiments thereof are all within the scope of protection of the present invention.

Referring to FIG. 1 to FIG. 4 , a grass pusher includes a push rod 1 connected to the fuselage, and two sides of the push rod 1 are provided with a guide rail 2, and the guide rail 2 is provided with a panel assembly that reciprocates on the guide rail 2 3. A reset lever 11 for resetting the panel assembly 3 is disposed between the guide rails 2. The reset lever 11 is movably connected to the push rod 1 at a fixed position, and is partially mounted on the panel assembly 3, and the panel assembly 3 is slid on the guide rail 2 to be reset. The lever 11 is rotated about the push rod 1, and the reset lever 11 is swung around the push rod 1 to slide the panel assembly 3 on the guide rail 2 to be reset.

In addition, the reset lever 11 is provided with at least one reset lever returning torsion spring 12, and the reset lever returning torsion spring 12 is connected at one end to the push rod 1.

In addition, the reset rod 11 includes a main rod 13 and a sub-rod 14 connected at two ends of the main rod. The sub-rod 14 is movably connected in a mounting hole in the push rod 1 and rotates around the mounting hole, and the main rod 13 is snapped onto the panel assembly 3. The reset lever 11 rotates around the push rod 1 with the panel assembly actively moving, and the reset lever returns the torsion spring 12 belt to cause the reset lever to rotate the panel back to the initial position. The main rod 13 and the sub-rod 14 are integrally formed, the main rod 13 has a cylindrical shape, and the sub-rod 14 has an L-shaped cross section.

In addition, the panel assembly 3 includes an upper panel 31 and a lower panel 32, and both ends of the upper panel 32 and the lower panel 31 are movably connected to the guide rail 2.

In addition, the lower panel 32 is provided with a card slot 33, and the reset lever 11 is partially fitted in the card slot 33.

In addition, the upper panel 31 is provided with a card slot 33, and the reset lever 11 is partially fitted in the card slot 33.

In addition, the push rod 1 is a U-shaped push rod.

Referring to FIG. 5 to FIG. 8, the panel assembly 3 is provided with a motor rotation switch 34. The panel assembly 3 is provided with an activation device. The activation device includes a button assembly 41, a communication assembly 43 and an operation assembly 42. The button assembly 41 is moved downwardly and pressured. The assembly 43, the communication assembly 43 is coupled to the operating assembly 42, and the moving operating assembly 42 moves the communication assembly 43 to press the motor rotary switch 34 to trigger the motor rotary switch 34.

In addition, the operating assembly 42 includes a pull rod 71 and a pull rod 422 driven by the tension rod. The button assembly 41 includes a pressing head 411. The communication assembly 43 includes a sliding plate 431 movably coupled to the panel assembly 3 and a hanging connection movably connected to the sliding plate 431. The ejector 432 is disposed on the upper portion of the splicing plate 432. One end of the splicing plate 432 is located at an upper portion of the slab 422. The ram 411 is pressed down to engage the splicing plate 432 and the pull plate 422, and the pull rod 71 is pulled. The plate 422 drives the hitch plate 432 to move the slide plate 431 over the panel assembly 3 to trigger the motor rotation switch 34.

In addition, the lower end of the pull rod 71 is provided with a gear 423. The lower end of the pull plate 422 is provided with a rack 424. The gear 423 is meshed with the rack 424. The rotating rod 71 drives the pull plate 422 to move through the gear 423 and the rack 424, and the pull plate 422 is opened. There is a card slot 425.

In addition, the pull rod 71 is connected to the pull plate 422, and the pull rod 71 moves on the panel assembly 3 to drive the gear 423 to rotate. The pull plate 422 is provided with a snap groove 425.

In addition, one end of the hanging plate 432 is hinged on the sliding plate 431, and the other end is provided with a convex structure 433 which is engaged with the engaging groove 425.

In addition, a button 412 is connected to the upper end of the pressing head 411, and the pressing button 412 pushes the pressing head 411 downward.

In addition, between the pull plate 422 and the panel assembly 3, a pull plate return spring 426 for returning the pull plate 422 is disposed, and the hitch plate 432 is connected with a hitch plate torsion spring 434 for resetting the hitch plate 432, and the indenter 411 A button reset compression spring 413 for resetting the button 412 is provided between the button 412 and the button 412.

In addition, the button assembly 41 is disposed on the upper panel 31, and the communication assembly 43, the operation assembly 42, and the motor rotation switch 34 are disposed on the lower panel 32.

Referring to Figures 9 to 13, a slide potentiometer 5 is provided between the panel assembly 3 and the guide rail 2 to adjust the travel speed of the pusher according to the relative displacement distance between the panel assembly 3 and the guide rail 2.

In addition, the slide potentiometer 5 includes a potentiometer base 51 and a slide pin 52 movably connected to the potentiometer base 51. The slide potentiometer 51 is connected with a self-propelled motor that controls the speed of the pusher, and the self-propelled motor is driven according to the slide. The rotational speed of the needle 52 on the potentiometer base 51 is varied to adjust the speed of the pusher.

In addition, the sliding potentiometer 51 includes a front adjustment distance and a rear adjustment distance, and the acceleration generated when the slider 52 moves within the front adjustment distance is smaller than the acceleration generated when the slider moves within the rear adjustment distance.

In a preferred embodiment, the base of the potentiometer 51 is fixedly disposed on the guide rail 2, and one end of the slide 52 is fixedly disposed on the panel assembly 3.

In another preferred embodiment, the base of the potentiometer 51 is fixedly disposed on the panel assembly 3, and one end of the slide 52 is fixedly disposed on the guide rail 2.

In addition, the panel assembly 3 is provided with a self-propelled key 61 that moves up and down and a knob 62 located below the self-propelled key 61. The knob 62 is connected with at least one lock shaft 63 that is engaged with the push rod 1, and the self-propelled key 61 and the knob The 62 card is engaged and the knob 62 is rotated to cause the lock shaft 63 to exit the push rod 1 to unlock the panel assembly 3.

In addition, a button body 64 is disposed under the self-propelled key 61, and the knob 62 is provided with a buckle groove 65 that cooperates with the button body 64. The self-propelled key 61 is moved down and the self-propelled key 61 is rotated to engage the button body 64 in the buckle. In the slot 65, the self-propelled key 61 is rotated to drive the knob 62 to rotate.

In addition, a lock shaft is provided on both sides of the knob 62, and the lock shaft 63 is inserted into the push rod hole of the push rod 1 to lock the panel assembly 3.

In addition, the buckle body 64 and the groove body 65 are coupled to each other. The cross section may be a cross, a cross or a star.

In addition, the panel assembly 3 is provided with a plurality of positioning holes 66. The self-propelled key 61 is provided with a plurality of positioning posts 67. The positioning posts 67 are snapped into the positioning holes 66 to fix the self-propelled key 61.

Further, the number of the positioning holes 66 is four, and the number of the positioning posts 67 is two.

Further, the self-propelled key 61 is provided with a self-propelled key button 68, and the knob 62 is provided with a key reset compression spring 69 for resetting the key 61.

Further, the knob 62 is provided on the lower panel 32, and the self-propelled key button 68 and the self-propelled key 61 are provided on the upper panel 32.

Referring to Figures 14 to 17, another form of safety device, the panel assembly 3 is provided with a panel assembly 3 a key 7 that moves up and down, a pull rod 71 that is movably connected to the panel assembly 3, and a start switch 72 that is disposed in the panel assembly 3, and the key 7 is moved down to the bottom of the panel assembly 3, and the lower portion of the key 7 is pushed by the bottom of the pull rod 71. Touching the start switch 72 causes the start switch 72 to open, and moving the key 7 up causes the bottom of the key 7 to disengage from the start switch 72 to open the start switch 72.

In addition, the bottom of the pull rod 71 is provided with a pressing seat 73. The pressing seat 73 is rotated by the pull rod 71 to push the key 7 to contact the start switch 72. The distance between the start switch 72 and the pressing seat 73 is greater than the translation distance generated by the rotation of the pressing seat 73.

In addition, the bottom of the key 7 is provided with a movable contact block 74. One end of the movable contact block 74 is movably connected to the key 7, and the other end is suspended in front and rear. The movable contact block 74 is pushed into contact with the start switch 72 by the pressing seat 73. The start switch 72 is turned on.

In addition, one end of the movable contact block 74 is movably coupled to the key 7 via the elastic connecting member 75.

In addition, the elastic connector is a 75 metal dome or spring.

Further, the key 7 is mounted on the lower panel 32 through the upper panel 31, and the pull rod 71 and the start switch 72 are both mounted on the lower panel 32.

When the key 7 is pulled out, or the key 7 is not pressed above the panel assembly 3, the lever 71 is operated at this time, since the pressing seat 73 on the lever 71 cannot touch the movable contact block 74, The start switch 72 is touched. When the key 7 is pressed and the key 7 is moved down to the bottom of the lower panel 32, the lever 71 is operated, and the pressing seat 73 of the lever 71 comes into contact with the movable contact block 74 to make the movable contact block The action of the pressure seat 73 of the pull rod 71 touches the start switch 72, and the start switch 72 is turned on.

Referring to Figure 18, the operation method of the self-propelled lawn mower,

104 knob switch state: When the knob switch is not turned on, the self-propelled insurance is not opened, the self-propelled key button 68 indicates the right 45-degree angular position in front of the panel, and the left and right lock shafts 63 are inserted into the holes of the push rod 1 at this time, the entire panel assembly 3 is not able to slide along the push rod 1. This mode is the manual drive mode.

101 Safety device activation: Press the safety device and press the button assembly 41 to snap the hook plate 432 and the pull plate 422.

102 lever start: The pull rod 71 drives the hitch plate 432 through the pull plate 422 to move the slide plate 431 on the panel assembly 3 to trigger the motor rotation switch 34.

103 mowing motor starts: the mower starts to run and manually pushes the mower to start working.

104 knob switch state: rotating the knob switch, the switch is rotated, the self-propelled key button 69 is pressed to drive the self-propelled key 61 to move downwards away from the key positioning hole 66, and the self-propelled key button 68 is rotated to match the button body 64 at the bottom of the self-propelled key 61. After entering the buckle groove 65 in the knob 62, the self-propelled key button 68 is continuously rotated at this time, and the self-propelled key knob 68 drives the self-propelled key 61 to rotate, so that the knob 62 is rotated, and the left and right lock shafts 63 connected to the knob 62 are rotated by the knob 62. Rotating to contract, away from the push rod 1, at this time the panel assembly 3 is unlocked and can slide on the push rod 1. When the self-propelled key button 68 is released, the self-propelled key 61 is pushed out by the key 62, and the self-propelled key 61 is inserted into the second position of the key positioning hole 66 through the positioning post 67 to enter the self-propelled mode.

103 mowing motor starts: the mower starts to run.

105 potentiometer position: push the panel assembly, the panel assembly 3 slides forward along the guide rail 2 on the push rod 1, and the reset rod 11 is rotated forward due to the sliding of the panel assembly 3, and the reset rod is stopped when the external force stops pushing the panel assembly 3 11 is rotated by the spring force to drive the reset rod 11 to rotate backward. At this time, the reset rod 11 drives the panel assembly 3 to slide back along the guide rail 2 to the initial position.

When the panel assembly 3 moves on the guide rail 2 to generate displacement, the slider 52 of the slide potentiometer 5 slides on the potentiometer base 51 to generate relative displacement, and the self-propelled motor is in the potentiometer according to the slide needle 52. The moving distance on the base 51 adjusts the self-propelled speed of the lawn mower. The sliding potentiometer includes a front adjustment distance and a rear adjustment distance. The acceleration generated when the slider 52 moves within the front adjustment distance is smaller than the sliding needle 52 in the rear stage. When the acceleration generated during the movement within the distance is adjusted, the greater the distance the panel assembly 3 moves on the guide rail 2, the larger the stroke of the slide potentiometer 5, and the faster the self-propelled speed of the lawn mower.

When it is necessary to close, the panel assembly 3 is reset, and then the self-propelled key 61 is rotated to insert the left lock shaft 63 on the knob 62 into the push rod 1, and then the self-propelled key button 68 is released, and the self-propelled key 61 is returned to the initial position.

Referring to Figure 19, a method of operating a lawn mower:

103 mowing motor starts: the mower starts to run.

109 Self-propelled switch: In the off state, it is the manual drive mode. To drive the motor, turn the switch on.

110 state of the locking device: when the locking device is locked, in the fixed speed self-propelled mode, according to the fixed Different positions on the putter are used to determine the self-propelled speed and realize the self-propelled function of the lawn mower.

When the locking device is unlocked, it is in the variable speed self-propelled mode.

When it is necessary to close, close the switch, touch the locking device, return the panel assembly to the initial position, release the lever, close the safety device, and the mower stops working.

Different from the prior art, the movable panel structure and the grass pushing machine of the invention can be switched between various driving modes, which is convenient for the operator to operate. The control system can also be used in a wheel-type driving device such as a snow blower or a ripper, and the principle thereof is also included in the protection scope of the patent, and details are not described herein again. The above is only the embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification of the present invention, or directly or indirectly applied to other related technical fields, The same is included in the scope of patent protection of the present invention.

Claims

A power device comprising:

a drive motor located in the power equipment housing to provide self-propelled power;

a motor located within the power unit housing that provides rotational power;

a control system comprising a guide rail fixed to a push rod extending from the housing, and a panel assembly sliding the guide rail;

The control system is characterized in that the control system is provided with a locking assembly that locks the panel assembly to the push rod for switching between the manual power drive and the self-propelled drive mode.
The power unit of claim 1 wherein said panel assembly includes a slide potentiometer comprising a potentiometer base and a slip pin movably coupled to the potentiometer base, said sliding potential The device is connected to a drive motor that controls the speed of the power device, and the drive motor adjusts the speed of the power according to the rotational speed of the slide needle moving distance on the potentiometer base.
The power unit of claim 1 wherein said panel assembly is provided with a locking assembly, said locking assembly including a knob to which is coupled at least one lock shaft that is engaged with the push rod.
The power unit according to claim 3, wherein the knob is in contact with a self-propelled switch, and the rotation of the knob controls the on and off of the self-propelled switch.
The power device according to claim 2, wherein the sliding potentiometer comprises a front adjustment distance and a rear adjustment distance, and the acceleration generated when the slide needle moves within the front adjustment distance is smaller than the rear adjustment distance of the slide needle The acceleration generated when moving.
The power unit according to claim 5, wherein the potentiometer base is fixedly disposed on the rail, and the sliding end is fixedly disposed on the panel assembly.
The power device according to claim 5, wherein the potentiometer base is fixedly disposed on the panel assembly, and the sliding end is fixedly disposed on the rail.
The power unit according to claim 3, wherein a lock shaft is provided on both sides of the knob, and the lock shaft is inserted into the push rod hole of the push rod to lock the panel assembly.
The power plant of claim 1 wherein said panel assembly is provided with a reset lever.
The power unit according to claim 1, wherein said panel assembly is provided with a safety starting device, and said safety starting device comprises a button assembly, a communication assembly and an operating assembly, said button assembly being moved downwardly The communication component connects the connection component to the operation component, and the movement operation component moves the communication component to press the self-propelled switch to trigger the self-propelled switch.
A method for controlling the propulsion of a self-propelled power device, characterized in that:

A) providing a variable speed automatic propulsion power plant, the power equipment comprising:

i) an outer casing to which a drive motor is attached and with a shifting transmission for propelling the power plant;

Ii) a handle attached to the outer casing, comprising a push rod and a panel assembly;

Iii) a locking assembly that controls the opening of the self-propelled drive motor and the locking of the control panel;

Iv) variable speed slide controller, according to the relative displacement of the panel assembly and the push rod held by the operator is proportional to the output power of the drive motor;

B) When the operator wants to drive the motor, rotate the locking component to open the self-propelled drive motor and unlock the control panel. The operator pushes the panel assembly. The relative displacement of the panel assembly and the push rod, signal output, and self-driven power equipment. When the operator wants to manually drive, the locking component is locked, the self-propelled driving motor is turned off, the control panel is locked, and the power driving device is manually driven.
a power device, including

a drive motor located in the power equipment housing to provide self-propelled power;

a motor located within the power unit housing that provides rotational power;

a control system comprising a guide rail fixed to a push rod extending from the housing, and a panel assembly sliding the guide rail;

It is characterized in that

The power device includes a locking component, and the driving speed of the power device is fixed at different values, and the driving mode of the power device is switched from a shifting self-propelled, a fixed speed self-propelled, and a manual driving walking.
A power plant according to claim 12, wherein the power device is locked The component can fix the walking speed of the power equipment to different values.
The power device according to claim 13, wherein the push rod has positioning holes at different positions, and when the panel assembly is locked at different positioning hole positions, the traveling speed is also fixed at different values, and the minimum value is 0, the maximum is 3.5m/s.
A method for controlling the propulsion of a self-propelled power device, characterized in that:

A) providing a variable speed automatic propulsion power plant, the power equipment comprising:

i) an outer casing to which a drive motor is attached and with a shifting transmission for propelling the power plant;

Ii) a handle attached to the outer casing, comprising a push rod and a panel assembly;

Iii) controlling the switch to control the opening of the self-propelled driving motor;

Iv) locking the component and controlling the locking of the control panel;

v) a variable speed slide controller, which is proportional to the output power of the drive motor according to the relative displacement of the panel assembly and the push rod held by the operator;

B) controlling the opening and closing of the switch to complete the transition of the self-propelled drive and the manual drive mode;

C) When the control switch is turned on, the locking component is locked and unlocked, and the transition of the fixed speed self-propelled driving and the variable speed self-propelled driving mode is completed.
A power plant according to any of claims 1-15, wherein said power plant is a lawn mower, a snowplow, and a ripper.
The power plant according to claim 16, wherein the mowing function control and the self-propelled driving of the lawn mower are independent systems.