An automaton

Abstract

The application discloses a self-walker, which comprises a shell assembly, a power output assembly, a power assembly and a transmission assembly. The power assembly comprises a motor, and a driving pinion is arranged on the motor. The power output assembly comprises a long shaft and an output part large gear. The shell assembly comprises a motor cover, a main machine shell and a secondary machine shell. The long shaft passes through the main machine shell and the secondary machine shell. The transmission assembly comprises a centrifugal assembly and a transmission part shaft pin. The centrifugal assembly comprises a transmission disc, a centrifugal movable block, a movable block fixed gear and a return torsional spring. The transmission disc is provided with a transmission pinion, and at least one movable block clamping groove is arranged on the transmission disc. When the self-walker normally operates, the components are in a normal meshing state. When the rotating speed of the output part large gear is greater than the rotating speed of the motor, the output part large gear cannot drive the movable block fixed gear to rotate by the transmission disc and the centrifugal movable block. When the motor stops operating, the centrifugal movable block is folded, so that the resistance received by the mower when retreating is smaller.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of garden tools, in particular to a self-walker. BACKGROUND

[0002] The mower is a mechanical tool for trimming lawns, vegetation, etc. The mower is conducive to promoting the development of agricultural mechanization, improving work efficiency and improving agricultural production efficiency, which is extremely important in our agricultural country. The mower, as an important tool in agricultural production, has the most direct influence on crop yield. Its invention is a great progress of human civilization.

[0003] In the prior art, in order to make the use of the mower more convenient, a self-walker is installed in the mower to reduce the burden of the user when pushing the mower to mow. However, the current self-walker can only provide driving power for the wheels on both sides of the mower, and the clutch function is complex. When the mower encounters a situation that the advancing speed of any one side wheel is greater than the driving speed (such as downhill, turning and driving motor off, etc.) during use, the driving motor in the self-walker will be dragged in reverse, causing the self-walker to be damaged. When the self-walker is in the off state and the mower is walking backward, the driving motor needs to be disconnected from the driving wheel by operating the clutch, which is complicated to use and has a high possibility of failure. Therefore, it needs to be improved. SUMMARY

[0004] The present application provides a new self-walker to solve the defects that the self-walker is easily dragged in reverse in the prior art.

[0005] In order to solve the above technical problems, the present application realizes the following technical scheme:

[0006] The utility model provides an autotraveler, including shell assembly, power output assembly, power assembly, transmission assembly, the power assembly includes motor, the motor is provided with driving pinion, the power output assembly includes long shaft, the shell assembly includes motor cover, main casing, vice casing, the long shaft passes through the main casing with vice casing, the transmission assembly includes centrifugal assembly, transmission part axle pin, the centrifugal assembly includes transmission disc, centrifugal movable block, movable block fixed gear, return torsional spring, the number of centrifugal movable block, return torsional spring is at least one, one centrifugal movable block with one return torsional spring is fixed on movable block fixed gear through an axle pin, centrifugal movable block with movable block fixed gear is rotatory connection, the arm of return torsional spring is opposite with centrifugal movable block and the other arm of return torsional spring is clamped with movable block fixed gear, transmission disc with movable block fixed gear is covered on transmission part axle pin, the power output assembly still includes output part big tooth, the long shaft is fixedly connected with output part big tooth, the motor is placed in the motor cover cavity, the motor cover with main casing is fixedly connected through screw, the motor is fixed on main casing through screw, driving pinion is engaged with movable block fixed gear, transmission disc is provided with transmission small tooth, transmission small tooth is engaged with output part big tooth, centrifugal movable block forms transmission position and retraction position with transmission disc through return torsional spring, movable block fixed gear, when centrifugal movable block is in transmission position, transmission disc is engaged, when centrifugal movable block is in retraction position, transmission disc is disengaged, transmission disc is provided with at least one movable block clamping groove, centrifugal movable block is clamped into movable block clamping groove when in transmission position, centrifugal movable block is provided with A surface and B surface, return torsional spring is opposite with B surface, centrifugal movable block is in transmission position and is forced to transmission disc through A surface.

[0007] In the prior art, in order to make the use of the mower more convenient, a self-walker is installed in the mower to reduce the burden of the user when pushing the mower to mow the grass. However, the current self-walker can only provide driving power for the wheels on both sides of the mower, and the clutch function is complex. The present application realizes the clutching function by the cooperation between the centrifugal movable block, the transmission disc, the return torsional spring and the movable block fixing gear. When the self-walker normally operates to output power, the motor drives the movable block fixing gear and rotates the centrifugal movable block fixed on the movable block fixing gear. The centrifugal movable block meshes with the transmission disc under the action of centrifugal force and drives the transmission disc to rotate by means of the A surface. The transmission disc further drives the power output assembly to complete the output of power. When the mower encounters a situation that the advancing speed of any one of the wheels is greater than the driving speed during use (such as downhill, turning and driving motor off, etc.), the output large gear drives the transmission disc to rotate, and the rotation speed of the transmission disc is greater than that of the motor. Since the movable block fixing gear is driven by the motor, the rotation speed of the output large gear is also greater than that of the movable block fixing gear. The centrifugal movable block is unfolded under the driving of the movable block fixing gear, the B surface of the centrifugal movable block contacts the transmission disc, the transmission disc cannot drive the centrifugal movable block to move, the centrifugal movable block cooperates with the movable block fixing gear to form a ratchet wheel that can only transmit driving force in one direction, and the situation that the motor is reversely dragged is avoided. When the motor stops moving, the movable block fixing gear stops rotating, and the centrifugal movable block returns to the folded position under the action of the return torsional spring, so as to separate the power assembly and the power output assembly, and the resistance received by the user when dragging the mower to retreat is smaller.

[0008] As preferred, the above-mentioned self-walker, the main shell and the motor cover jointly form a motor containing space, the main shell and the auxiliary shell jointly form a meshing space, the driving pinion gear arranged on the motor extends into the meshing space through the main shell, and the transmission assembly and the output large gear are arranged in the meshing space.

[0009] The main shell and the auxiliary shell jointly form a meshing space, so that the gears in the self-walker mesh in the meshing space, and the components can be better protected, and the sundries generated during the operation of the mower can be prevented from entering the self-walker to cause damage to the self-walker.

[0010] As preferred, the above-mentioned self-walker, the movable block fixing gear is provided with a movable block limiting column, one centrifugal movable block corresponds to one movable block limiting column, and the centrifugal movable block abuts against the movable block limiting column when the centrifugal movable block is in the folded position.

[0011] The centrifugal force is proportional to the distance of the object from the center of the circle, the greater the distance, the greater the centrifugal force, the setting of the movable block limiting column makes the centrifugal movable block faster from the folding position to the meshing position, which makes the starting speed of the application faster.

[0012] As a preferred, the self-walker, the power output assembly further comprises a large tooth fixed shaft pin, the output part large tooth is provided with a large tooth clamping groove, the large tooth fixed shaft pin passes through the long shaft and the large tooth fixed shaft pin is clamped into the large tooth clamping groove.

[0013] The cooperation of the large tooth clamping groove and the large tooth fixed shaft pin can better fix the output part large tooth on the long shaft, so that the output process of the driving force is more stable.

[0014] As a preferred, the self-walker, the transmission assembly further comprises a transmission part limiting bearing, the number of the transmission part limiting bearing is two and is installed at both ends of the transmission part shaft pin, one of the transmission part limiting bearing is abutted with the side of the transmission disc provided with the transmission pinion, the other of the transmission part limiting bearing is abutted with the movable block fixed gear, one of the transmission part limiting bearing is clamped into the main bearing groove provided on the main machine shell, the other of the transmission part limiting bearing is clamped into the auxiliary bearing groove provided on the auxiliary machine shell.

[0015] The setting of the transmission part limiting bearing can better fix the centrifugal assembly on the transmission part shaft pin, so that the engagement between the transmission pinion and the output part large tooth, the engagement between the centrifugal movable block and the movable block clamping groove and the engagement between the movable block fixed gear and the driving pinion can be more stable.

[0016] As a preferred, the self-walker, the long shaft is provided with a first limiting groove, the power output assembly further comprises a first shaft stop ring and a first output part limiting bearing, the first shaft stop ring is clamped into the first limiting groove, the first output part limiting bearing is sleeved on the long shaft, one side of the output part large tooth is abutted with the first shaft stop ring and the other side of the output part large tooth is abutted with the first output part limiting bearing, the first output part limiting bearing is clamped into the first bearing groove provided on the main machine shell.

[0017] The setting of the first shaft stop ring and the first output part limiting bearing can better fix the output part large tooth, so that it can better engage with the transmission pinion and will not affect the rotation of the output part large tooth.

[0018] As preferred, the self-walker as claimed in any one of the above embodiments, the long shaft is provided with a second limiting groove, the power output assembly further comprises a second shaft stopper and a second output part limiting bearing, the second shaft stopper is clamped into the second limiting groove, the second output part limiting bearing is sleeved on the long shaft and abuts against the second shaft stopper, and the second output part limiting bearing is clamped into a second bearing groove provided on the auxiliary machine shell.

[0019] The second shaft stopper and the second output part limiting bearing can better stabilize the long shaft, so that the long shaft does not shake during the operation of the self-walker, and the cooperation between the components is more stable.

[0020] As preferred, the self-walker as claimed in any one of the above embodiments, the power assembly further comprises a temperature protector and an inductance protector, the main machine shell and the motor cover jointly form a protector accommodating space, the protector accommodating space is communicated with the motor accommodating space, and the temperature protector and the inductance protector are arranged in the protector accommodating space.

[0021] The protector accommodating space communicated with the motor accommodating space is arranged to accommodate the temperature protector and the inductance protector, so that the condition of the motor during operation can be better detected, and the power supply can be cut off in time, so that the safety protection effect is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of the present application;

[0023] Figure 2 is an exploded view of the present application;

[0024] Figure 3 is a sectional view of the shell assembly in the present application;

[0025] Figure 4 is a structural schematic view of the power assembly in the present application;

[0026] Figure 5 is a structural schematic view of the transmission assembly in the present application;

[0027] Figure 6 is a partial perspective view of the present application;

[0028] Figure 7 is a structural schematic view of the transmission disc, the centrifugal movable block and the return torsion spring in the transmission position in the present application;

[0029] Figure 8 is a structural schematic view of the movable block fixing gear, the centrifugal movable block and the return torsion spring in the folding position in the present application;

[0030] Figure 9 is a structural schematic view of the output part gear in the present application;

[0031] Figure 10 A sectional view of the present application;

[0032] Figure 11 A structural schematic view of the long axis in the present application. DETAILED DESCRIPTION

[0033] The present application will be further described in detail by the following Figures 1-11 and the specific embodiments, but they are not limitations to the present application:

[0034] Example 1

[0035] The self-walker comprises a housing assembly 1, a power output assembly 2, a power assembly 3, a transmission assembly 4, the power assembly 3 comprises a motor 31, the motor 31 is provided with a driving pinion 311, the power output assembly 2 comprises a long shaft 21, the housing assembly 1 comprises a motor cover 11, a main machine shell 12, a secondary machine shell 13, the long shaft 21 passes through the main machine shell 12 and the secondary machine shell 13, the transmission assembly 4 comprises a centrifugal assembly, a transmission part shaft pin 41, the centrifugal assembly comprises a transmission disc 401, a centrifugal movable block 402, a movable block fixed gear 403, a return torsional spring 404, the number of the centrifugal movable block 402 and the return torsional spring 404 is at least one, one centrifugal movable block 402 and one return torsional spring 404 are fixed on the movable block fixed gear 403 through a shaft pin, the centrifugal movable block 402 and the movable block fixed gear 403 are rotationally connected, one arm of the return torsional spring 404 abuts against the centrifugal movable block 402 and the other arm of the return torsional spring 404 is clamped with the movable block fixed gear 403, the transmission disc 401 and the movable block fixed gear 403 are sleeved on the transmission part shaft pin 41, the power output assembly 2 further comprises an output part gear 22, the long shaft 21 is fixedly connected with the output part gear 22, the motor 31 is arranged in the cavity of the motor cover 11, the motor cover 11 is fixedly connected with the main machine shell 12 through screws, the motor 31 is fixed on the main machine shell 12 through screws, the driving pinion 311 is engaged with the movable block fixed gear 403, the transmission disc 401 is provided with a transmission pin 4011, the transmission pin 4011 is engaged with the output part gear 22, the centrifugal movable block 402 forms a transmission position and a folding position with the return torsional spring 404, the movable block fixed gear 403 and the transmission disc 401, the centrifugal movable block 402 is engaged with the transmission disc 401 in the transmission position, the centrifugal movable block 402 is disengaged from the transmission disc 401 in the folding position, the transmission disc 401 is provided with at least one movable block clamping groove 4012, the centrifugal movable block 402 is clamped into the movable block clamping groove 4012 in the transmission position, the centrifugal movable block 402 is provided with an A surface 4021 and a B surface 4022, the return torsional spring 404 abuts against the B surface 4022, the centrifugal movable block 402 applies force to the transmission disc 401 through the A surface 4021 in the transmission position.

[0036] Preferably, the main machine shell 12 and the motor cover 11 jointly form a motor containing space 101, the main machine shell 12 and the secondary machine shell 13 jointly form an engagement space 102, the driving pinion 311 provided on the motor 31 extends into the engagement space 102 through the main machine shell 12, the transmission assembly 4 and the output part gear 22 are arranged in the engagement space 102.

[0037] As preferred, the movable block fixing gear 403 is provided with a movable block limiting post 4031, and one centrifugal movable block 402 corresponds to one movable block limiting post 4031, and the centrifugal movable block 402 abuts against the movable block limiting post 4031 when in the folding position.

[0038] As preferred, the power output assembly 2 further comprises a gear fixing shaft pin 23, and the output gear 22 is provided with a gear clamping groove 221, and the gear fixing shaft pin 23 penetrates through the long shaft 21 and is clamped into the gear clamping groove 221 at both ends.

[0039] As preferred, the transmission assembly 4 further comprises two transmission part limiting bearings 42 installed at both ends of the transmission part shaft pin 41, one of which abuts against the side of the transmission disc 401 provided with transmission pinion 4011, and the other abuts against the movable block fixing gear 403, one of the transmission part limiting bearings 42 is clamped into the main bearing groove 121 provided on the main machine shell 12, and the other is clamped into the auxiliary bearing groove 131 provided on the auxiliary machine shell 13.

[0040] As preferred, the long shaft 21 is provided with a first limiting groove 211, and the power output assembly 2 further comprises a first shaft stop ring 24 and a first output part limiting bearing 25, the first shaft stop ring 24 is clamped into the first limiting groove 211, the first output part limiting bearing 25 is sleeved on the long shaft 21, one side of the output gear 22 abuts against the first shaft stop ring 24 and the other side abuts against the first output part limiting bearing 25, and the first output part limiting bearing 25 is clamped into the first bearing groove 122 provided on the main machine shell 12.

[0041] As preferred, the long shaft 21 is provided with a second limiting groove 212, and the power output assembly 2 further comprises a second shaft stop ring 26 and a second output part limiting bearing 27, the second shaft stop ring 26 is clamped into the second limiting groove 212, the second output part limiting bearing 27 is sleeved on the long shaft 21 and abuts against the second shaft stop ring 26, and at the same time, the second output part limiting bearing 27 is clamped into the second bearing groove 132 provided on the auxiliary machine shell 13.

[0042] As preferred, the power assembly 3 further comprises a temperature protector 32 and an inductance protector 33, and the main machine shell 12 and the motor cover 11 jointly form a protector containing space 103, the protector containing space 103 is in communication with the motor containing space 101, and the temperature protector 32 and the inductance protector 33 are arranged in the protector containing space 103.

[0043] In normal use, the motor 31 controls the rotation of the driving pinion 311, the driving pinion 311 meshes with the movable block fixed gear 403 and drives the movable block fixed gear 403 to rotate, in the process of rotation, the centrifugal movable block 402 fixed on the movable block fixed gear 403 is unfolded under the action of centrifugal force and clamped into the movable block clamping groove 4012, the A surface 4021 on the centrifugal movable block 402 abuts against the transmission disc 401 and drives the transmission disc 401 to rotate, the transmission small teeth 4011 on the transmission disc 401 drive the output part large teeth 22 to rotate, the output part large teeth 22 drive the long shaft 21 to rotate and finally complete the output of power.

[0044] When the rotation speed of the long shaft 21 is greater than the rotation speed of the motor 31 in the process of use, the long shaft 21 drives the transmission disc 401 to rotate through the transmission small teeth 4011, the motor 31 controls the rotation of the driving pinion 311, the driving pinion 311 meshes with the movable block fixed gear 403 and drives the movable block fixed gear 403 to rotate, in the process of rotation, the centrifugal movable block 402 fixed on the movable block fixed gear 403 is unfolded under the action of centrifugal force, the transmission disc 401 collides with the B surface 4022 of the centrifugal movable block 402 but the movable block clamping groove 4012 does not mesh with it and does not drive the movable block fixed gear 403 to rotate through the centrifugal movable block 402.

[0045] When the motor 31 of the application stops working, the motor 31 stops working, the centrifugal movable block 402 loses the action of centrifugal force and is folded under the action of the return torsional spring 404 and abuts against the movable block limiting column 4031.

[0046] In summary, the above only describes the preferred embodiment of the application, any equivalent changes and modifications made within the scope of the application should be included in the scope of the application.

Claims

1. A self-walker, comprising a housing assembly (1), a power output assembly (2), a power assembly (3), a transmission assembly (4), the power assembly (3) comprising a motor (31), the motor (31) being provided with a driving pinion (311), the power output assembly (2) comprising a long shaft (21), characterized in that: The shell assembly (1) includes a motor cover (11), a main shell (12), a secondary shell (13), the long shaft (21) passes through the main shell (12) and the secondary shell (13), the transmission assembly (4) includes a centrifugal assembly, a transmission part shaft pin (41), the centrifugal assembly includes a transmission disc (401), a centrifugal movable block (402), a movable block fixed gear (403), a return torsion spring (404), the number of the centrifugal movable block (402) and the return torsion spring (404) is at least one, one centrifugal movable block (402) and one return torsion spring (404) are fixed on the movable block fixed gear (403) by a shaft pin, the centrifugal movable block (402) and the movable block fixed gear (403) are rotationally connected, one arm of the return torsion spring (404) abuts against the centrifugal movable block (402) and the other arm of the return torsion spring (404) is clamped with the movable block fixed gear (403), the transmission disc (401) and the movable block fixed gear (403) are sleeved on the transmission part shaft pin (41), the power output assembly (2) further includes an output part large tooth (22), the long shaft (21) is fixedly connected with the output part large tooth (22), the motor (31) is arranged in the cavity of the motor cover (11), the motor cover (11) is fixedly connected with the main shell (12) by screws, the motor (31) is fixed on the main shell (12) by screws, the driving pinion (311) is engaged with the movable block fixed gear (403), the transmission disc (401) is provided with a transmission pinion (4011), the transmission pinion (4011) is engaged with the output part large tooth (22), the centrifugal movable block (402) forms a transmission position and a folding position with the return torsion spring (404), the movable block fixed gear (403) and the transmission disc (401), the centrifugal movable block (402) is engaged with the transmission disc (401) when being in the transmission position, the centrifugal movable block (402) is disengaged from the transmission disc (401) when being in the folding position, the transmission disc (401) is provided with at least one movable block clamping groove (4012), the centrifugal movable block (402) is clamped into the movable block clamping groove (4012) when being in the transmission position, the centrifugal movable block (402) is provided with an A surface (4021) and a B surface (4022), the return torsion spring (404) abuts against the B surface (4022), the centrifugal movable block (402) applies force to the transmission disc (401) by the A surface (4021) when being in the transmission position; ​ The main shell (12) and the motor cover (11) jointly form a motor containing space (101), the main shell (12) and the auxiliary shell (13) jointly form a meshing space (102), the driving pinion (311) provided on the motor (31) extends into the meshing space (102) through the main shell (12), and the transmission assembly (4) and the output part gear (22) are arranged in the meshing space (102). The movable block limiting column (4031) is arranged on the movable block fixing gear (403), one centrifugal movable block (402) corresponds to one movable block limiting column (4031), and the centrifugal movable block (402) abuts against the movable block limiting column (4031) in the folding position.

2. The automaton of claim 1, wherein: The power output assembly (2) further comprises a gear fixing shaft pin (23), the output part gear (22) is provided with a gear clamping groove (221), the gear fixing shaft pin (23) passes through the long shaft (21), and the two ends of the gear fixing shaft pin (23) are clamped into the gear clamping groove (221).

3. The automaton of claim 1, wherein: The transmission assembly (4) further comprises two transmission part limiting bearings (42) which are arranged at the two ends of the transmission part shaft pin (41), one of the transmission part limiting bearings (42) abuts against one side of the transmission disc (401) provided with the transmission pinion (4011), the other transmission part limiting bearing (42) abuts against the movable block fixing gear (403), one transmission part limiting bearing (42) is clamped into the main bearing groove (121) arranged on the main shell (12), and the other transmission part limiting bearing (42) is clamped into the auxiliary bearing groove (131) arranged on the auxiliary shell (13).

4. The automaton of claim 1, wherein: The long shaft (21) is provided with a first limiting groove (211), the power output assembly (2) further comprises a first shaft stop ring (24) and a first output part limiting bearing (25), the first shaft stop ring (24) is clamped into the first limiting groove (211), the first output part limiting bearing (25) is sleeved on the long shaft (21), one side of the output part gear (22) abuts against the first shaft stop ring (24), the other side of the output part gear (22) abuts against the first output part limiting bearing (25), and the first output part limiting bearing (25) is clamped into the first bearing groove (122) arranged on the main shell (12).

5. The automaton of claim 1, wherein: The long shaft (21) is provided with a second limiting groove (212), the power output assembly (2) further comprises a second shaft stop ring (26) and a second output part limiting bearing (27), the second shaft stop ring (26) is clamped into the second limiting groove (212), the second output part limiting bearing (27) is sleeved on the long shaft (21) and abuts against the second shaft stop ring (26), and meanwhile the second output part limiting bearing (27) is clamped into the second bearing groove (132) arranged on the auxiliary shell (13).

6. The automaton of claim 1, wherein: The power assembly (3) further comprises a temperature protector (32) and an inductance protector (33), the main shell (12) and the motor cover (11) jointly form a protector containing space (103), the protector containing space (103) is communicated with the motor containing space (101), and the temperature protector (32) and the inductance protector (33) are arranged in the protector containing space (103).

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