CN107836209A - A kind of hay mover and sensor height control method - Google Patents

Abstract

The invention provides a lawn mower and a sensor height control method, including the overall structure of the vehicle body, a mowing mechanism, a transmission mechanism and a shifting mechanism. Frame, universal wheel, fixed frame, baffle; the mowing mechanism includes blades and brushes; the transmission mechanism includes the first synchronous pulley, the first synchronous belt, the second synchronous belt pulley, the second synchronous belt, and the third synchronous belt The shift mechanism includes a first gear, a second gear, a stepper motor, a drive shaft, a first thread, a fixed shaft, a driving shaft, a second thread, and a socket. By setting the tires, the first synchronous pulley, the first synchronous belt, the second synchronous belt, the second synchronous belt, and the third synchronous pulley, the synchronous pulleys of different sizes are used to drive the blade to rotate for mowing. The radius of the pulley and the number of teeth are different, and the rotation speed of the blade is higher than the rotation speed of the tire, so as to realize high-efficiency mowing.

Description

A lawn mower and sensor height control method

technical field

The invention relates to the technical field of mowing equipment, in particular to a lawn mower and a sensor height control method.

Background technique

A lawnmower is also called a weeder, a lawnmower, a lawn trimmer, etc. A lawnmower is a mechanical tool used to trim lawns and vegetation. The lawn mower is a tool that plays an important role in agricultural production. The development of agricultural mechanization, improvement of work efficiency, and improvement of agricultural production efficiency are extremely important in a large agricultural country like ours, and have the most direct impact on crop production. Its invention was a big step for human civilization.

Most of the current lawn mowers are driven by gasoline engines or electric motors, and need to carry engines or batteries, which makes the lawn mowers more complicated in structure, more expensive, and consumes fuel and electricity to waste energy. And that kind of portable lawnmower needs manual assistance to operate, increases people's physical labor, forms a burden, and existing technology is difficult to solve the above problems.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a lawn mower and a sensor height control method, which solves the problem that the above-mentioned existing lawn mowers are mostly driven by a gasoline engine or a motor, and need to carry an engine or a battery. Make lawnmower structure more complicated, price is more expensive, consumes oil and electricity and wastes energy. And that kind of portable lawn mower requires manual assistance to operate, increasing people's physical labor and forming a burden.

In order to achieve the above object, the present invention is achieved through the following technical solutions: a lawnmower and sensor, including the overall structure of the vehicle body, the mowing mechanism, the transmission mechanism and the shifting mechanism, the overall structure of the vehicle body includes handrails, telescopic push rods, tires , support rod, collection box, main frame, universal wheel, fixed frame, baffle; mowing mechanism includes blade, brush; transmission mechanism includes first synchronous pulley, first synchronous belt, second synchronous pulley, second Two synchronous belts, the third synchronous pulley, the shifting mechanism includes a first gear, a second gear, a stepper motor, a transmission shaft, a first screw thread, a fixed shaft, a driving shaft, a second screw thread, and a socket. The collection box is fixed on the surface of the main frame, the tire is connected to one side of the main frame through a shaft, the universal wheel is connected to the other side of the main frame through bolts, and the baffle is connected through screws Set on the surface of the main frame, the armrest and the telescopic push rod are fixed on the top of the main frame, the support rod is fixed inside the main frame, and the telescopic push rod is fixed on the support rod The top end of the first synchronous pulley is connected to both ends of the rear axle through bearings, the second synchronous pulley is connected to the first synchronous pulley through the first synchronous belt, and the third synchronous belt The wheel is connected with the second synchronous pulley through the second synchronous belt, the blade and the brush are arranged on the bottom end of the main body frame through the fixing frame, and the third synchronous pulley is passed through a bearing fixed on one side of the blade, the first gear and the second gear are fixed on the shaft of the second synchronous pulley, and the stepping motor is fixed on the surface of the first synchronous pulley , one side of the drive shaft is fixedly provided with the driving shaft, the surface of the driving shaft is fixedly provided with the first thread, and the first synchronous pulley is connected with the fixed shaft through the second thread .

Preferably, the tire is connected to the fixed shaft through a bearing.

Preferably, the stepping motor is screwed to the first synchronous pulley, and the stepping motor is electrically connected to the first synchronous pulley by setting a sensor.

Preferably, the stepping motor is connected to the first synchronous pulley through fixing screws.

Preferably, the first synchronous belt is connected to the first gear or the second gear, and a buffer zone is provided between the first gear and the second gear.

Preferably, the driving shaft is connected to the fixed shaft through the first thread and the second thread.

Preferably, a lawn mower and a sensor height control method, the lawn mower advances, the tires rotate, and the first synchronous pulley on the rear axle also rotates, driving the second synchronous pulley to rotate, and then driving the third synchronous belt The wheel rotates, and the rotation of the big pulley drives the small pulley to rotate at a high speed. The baffle guides the vegetation next to the mower into the mower, cuts off the grass next to the mower, and allows the mower to have enough space to travel to avoid miscellaneous Grass enters the tires or timing pulleys to block the car body. The third timing pulley rotates at a high speed to drive the blade and the brush to rotate. The blade rotates to mow the grass. The high-speed rotating blade is easier to cut off the weeds and is not easy to jam the blade. , the brush sweeps the cut vegetation into the collection box for collection, and at the same time the stepping motor drives the active shaft to rotate, and the active shaft drives the first synchronous pulley to move through the force between the first thread and the second thread, and at the same time the first The timing belt shifts from the first gear to the second gear to realize the height control of the mower and the sensor.

The invention provides a lawnmower and a sensor height control method. Has the following beneficial effects:

The height control method of the lawn mower and the sensor adopts synchronous pulleys of different sizes to engage , to drive the blade to rotate for mowing. Due to the different radius and number of teeth of the synchronous pulley, the rotation speed of the blade is higher than the rotation speed of the tire to achieve high-efficiency mowing.

In the lawn mower and the sensor height control method, by setting the stepping motor, the first synchronous pulley, the transmission shaft, the driving shaft, the first screw thread, the fixed shaft, and the driving shaft, the stepping motor is equipped with the sensor and the first synchronous pulley The electrical connection can transmit information such as the rotational speed and torque of the first synchronous pulley through the sensor, and then realize the shifting of the first synchronous belt by adjusting the stepping motor, which improves the controllability of the lawn mower.

In the lawn mower and the sensor height control method, by setting the first gear and the second gear, and a buffer zone is set between the first gear and the second gear, it is very convenient to set the first synchronous belt in the first Changing between gear and second gear, increasing the torque when high torque is required, and switching to labor-saving mode when high torque is not required, improves the flexibility and diversity of the lawn mower.

The height control method of the lawn mower and the sensor can completely fix the first synchronous pulley after the gear position of the lawn mower is adjusted by setting the jack, which increases the stability of the lawn mower in use and improves the safety of the lawn mower.

Description of drawings

Fig. 1 is the overall structural representation of mower of the present invention;

Fig. 2 is the overall structure schematic diagram of the second synchronous pulley of the present invention;

3 is a schematic diagram of the overall structure of the first gear of the present invention;

4 is a schematic diagram of the overall structure of the first synchronous pulley of the present invention;

In the figure: 1 tire, 2 first synchronous pulley, 3 first synchronous belt, 4 second synchronous pulley, 5 second synchronous belt, 6 third synchronous pulley, 7 fixed frame, 8 universal wheel, 9 gears Board, 10 main frame, 11 blade, 12 brush, 13 collection box, 14 retractable push rod, 15 support rod, 16 armrest, 17 first gear, 18 second gear, 19 stepper motor, 20 transmission shaft , 21 first thread, 22 fixed shaft, 23 driving shaft, 24, second thread, 25 socket.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The embodiment of the present invention provides a lawn mower and a sensor, including the overall structure of the vehicle body, the mowing mechanism, the transmission mechanism and the shifting mechanism as shown in Figures 1-4, the overall structure of the vehicle body includes handrails 16, telescopic push rods 14, tires 1. Support rod 15, collection box 13, main body frame 10, universal wheel 8, fixed frame 7, baffle plate 9; mowing mechanism includes blade 11, brush 12; transmission mechanism includes first synchronous pulley 2, first Synchronous belt 3, the second synchronous pulley 4, the second synchronous belt 5, the third synchronous pulley 6, the shift mechanism includes first gear 17, second gear 18, stepper motor 19, power transmission shaft 20, the first gear One screw thread 21, fixed shaft 22, active rotating shaft 23, second thread 24, jack 25, the collection box 13 is fixed on the surface of the main frame 10, the tire 1 is arranged on the side of the main frame 10 through the shaft connection, and the universal wheel 8 is connected by a bolt The connection is arranged on the other side of the main frame 10, the baffle plate 9 is arranged on the surface of the main frame 10 through screw connection, the armrest 16 and the telescopic push rod 14 are fixed on the top of the main frame 10, and the support rod 15 is fixed inside the main frame 10, which is telescopic. The push rod 14 is fixed on the top of the support rod 15, the first synchronous pulley 2 is connected to the two ends of the rear wheel shaft through the bearing, the second synchronous pulley 4 is connected with the first synchronous pulley 2 by the first synchronous belt 3, and the third The synchronous pulley 6 is connected with the second synchronous pulley 4 through the second synchronous belt 5, the blade 11 and the brush 12 are arranged on the bottom end of the main body frame 10 through the fixing frame 7, and the third synchronous pulley 6 is fixed on the blade 11 through a bearing. On one side, the first gear position 17 and the second gear position 18 are fixed on the shaft of the second synchronous pulley 4, the stepper motor 19 is fixed on the surface of the first synchronous pulley 2, and one side of the power transmission shaft 20 is fixedly provided with The driving shaft 23 is fixedly provided with a first thread 21 on the surface of the driving shaft 23 , and the first synchronous pulley 2 is connected to the fixed shaft 22 through a second thread 24 .

In summary, the height control method of the lawn mower and the sensor, by setting the tire, the first synchronous pulley, the first synchronous belt, the second synchronous pulley, the second synchronous belt, and the third synchronous pulley, adopts different sizes The synchronous pulley meshes to drive the blade to rotate for mowing. Due to the difference in the radius and number of teeth of the synchronous pulley, the rotational speed of the blade is higher than the rotational speed of the tire to achieve high-efficiency mowing.

Secondly, by setting the stepper motor, the first synchronous pulley, the transmission shaft, the driving shaft, the first thread, the fixed shaft, and the driving shaft, the stepping motor is electrically connected with the first synchronous pulley by setting the sensor, and the sensor can be used to Information such as the rotational speed and torque of the first synchronous pulley is transmitted, and then the shifting of the first synchronous belt is realized by adjusting the stepping motor, which improves the controllability of the lawn mower.

Moreover, by setting the first gear and the second gear, and a buffer zone is set between the first gear and the second gear, it is very convenient to place the first synchronous belt between the first gear and the second gear. It can be changed between times, increase the torque when high torque is needed, and switch to labor-saving mode when high torque is not needed, which improves the flexibility and diversity of the lawn mower.

Moreover, by providing the socket, the first synchronous pulley can be completely fixed after the mower has adjusted the gear position, which increases the stability of the mower during use and improves the safety of the mower.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. any such actual relationship or order exists between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (7)

1. A lawn mower and sensor, including the overall structure of the body, a mowing mechanism, a transmission mechanism and a gear shifting mechanism. The overall structure of the body includes a handrail (16), a retractable push rod (14), a tire (1), and a support rod (15), collection box (13), main frame (10), universal wheels (8), fixed frame (7), baffle (9); mowing mechanism includes blade (11), brush (12); The transmission mechanism includes the first synchronous pulley (2), the first synchronous belt (3), the second synchronous pulley (4), the second synchronous belt (5), and the third synchronous pulley (6), and the shifting mechanism includes The first gear (17), the second gear (18), the stepper motor (19), the transmission shaft (20), the first thread (21), the fixed shaft (22), the driving shaft (23), the second thread (24), socket (25), characterized in that: the collection box (13) is fixed on the surface of the main frame (10), and the tire (1) is arranged on the main frame (10) through a shaft connection ), the universal wheel (8) is set on the other side of the main frame (10) through bolt connection, and the baffle (9) is set on the surface of the main frame (10) through screw connection, so The armrest (16) and the telescopic push rod (14) are fixed on the top of the main frame (10), the support rod (15) is fixed inside the main frame (10), and the telescopic push rod (14) is fixed on the top of the support rod (15), the first synchronous pulley (2) is connected to both ends of the rear axle through bearings, and the second synchronous pulley (4) passes through the first The timing belt (3) is connected with the first timing pulley (2), and the third timing pulley (6) is connected with the second timing pulley (4) through the second timing belt (5) , the blade (11) and the brush (12) are set at the bottom end of the main body frame (10) through the fixing frame (7), and the third synchronous pulley (6) is fixed on the On one side of the blade (11), the first gear (17) and the second gear (18) are fixed on the shaft of the second synchronous pulley (4), and the stepping motor ( 19) fixed on the surface of the first synchronous pulley (2), the driving shaft (23) is fixedly installed on one side of the transmission shaft (20), and the surface of the driving shaft (23) is fixedly installed with The first thread (21), the first synchronous pulley (2) is connected with the fixed shaft (22) through the second thread (24). 2 . The lawnmower and sensor according to claim 1 , characterized in that: the tire ( 1 ) is connected to the fixed shaft ( 22 ) through a bearing. 3 . 3. A lawnmower and sensor according to claim 1, characterized in that: the stepping motor (19) is screwed to the first synchronous pulley (2), and the stepping motor ( 19) Electrically connect with the first synchronous pulley (2) by setting a sensor. 4. The lawn mower and sensor according to claim 1, characterized in that: the stepper motor (19) is connected to the first synchronous pulley (2) by fixing screws. 5. A lawnmower and sensor according to claim 1, characterized in that: the first timing belt (3) is connected to the first gear (17) or the second gear (18) connected, a buffer zone is set between the first gear (17) and the second gear (18). 6. The lawnmower and sensor according to claim 1, characterized in that: the driving shaft (23) and the fixed shaft (22) pass through the first thread (21) and the second threaded (24) connection. 7. A lawn mower and sensor height control method, characterized in that: the lawn mower advances, the tires rotate, and the first synchronous pulley on the rear wheel shaft also rotates accordingly, driving the second synchronous pulley to rotate, and then driving the second synchronous pulley to rotate. The three synchronous pulleys rotate, and the rotation of the large pulley drives the small pulley to rotate at a high speed. The baffle guides the vegetation next to the mower into the mower, cuts off the grass next to the mower, and allows the mower to have enough space to move forward. , to prevent weeds from entering the tires or the synchronous pulley and jamming the car body. The high-speed rotation of the third synchronous pulley drives the blade and the brush to rotate, and the blade rotates to mow the grass. The blade is stuck, and the brush sweeps the cut vegetation into the collection box for collection. At the same time, the stepping motor drives the active shaft to rotate, and the active shaft drives the first synchronous pulley to move through the force between the first thread and the second thread. At the same time, the first synchronous belt is shifted from the first gear to the second gear to realize the height control of the lawn mower and the sensor.