CN214902212U - Grass cutter - Google Patents

Abstract

The utility model discloses a mower, which comprises an engine, a first driving device and a second driving device; the engine is positioned on one side of the center line, and the center line penetrates through the center of the cutter head along the walking direction; the first driving device comprises a first driving transverse shaft and a first driving longitudinal shaft, the first driving transverse shaft is in power connection with the output end of the engine, the first driving longitudinal shaft is provided with the cutter head, and the first driving transverse shaft is in power connection with the first driving longitudinal shaft; the second driving device comprises a second driving shaft provided with a travelling wheel and a gearbox arranged on the second driving shaft, and the output end of the engine is in power connection with the second driving shaft through the gearbox. The utility model discloses a lawn mower engine is located one side of central line, sets up the gearbox in the second drive shaft that is equipped with the walking wheel, and the whole height of equipment reduces by a wide margin, simple structure, convenient operation.

Description

Grass cutter

Technical Field

The utility model belongs to the agricultural machinery field, specifically speaking relates to a lawn mower.

Background

The mower is a common agricultural machine, because the rotating speed of a driving shaft for driving a mower cutter head is far greater than that of a driving shaft for driving a travelling wheel, the power transmitted to the cutter head driving shaft by an engine basically does not need to be reduced by a gearbox, and the power transmitted to the travelling wheel driving shaft needs to be reduced by the gearbox, so that the existing mower generally uses the engine to directly drive the cutter head to rotate, and the cutter head is driven by manpower or a second power source.

If only one engine is arranged, the existing engine is generally positioned on a central line of the mower (the central line is a line which passes through the center of the cutter head along the walking direction), the engine drives the cutter head driving shaft to rotate and simultaneously needs to transmit power to the walking wheel driving shaft, and due to position limitation, the engine and the gearbox need to be arranged up and down, so that the whole machine is high, and the use environment is limited.

In addition, the output end of the engine directly drives the cutter head to rotate, and the vibration is large when the cutter head works under the action of a resistance force, so that the vibration of the whole machine is large, and the loss of the mower is accelerated.

SUMMERY OF THE UTILITY MODEL

To the problem, the utility model discloses a lawn mower.

The utility model provides a mower, which comprises an engine, a first driving device and a second driving device; the engine is positioned on one side of the center line, and the center line penetrates through the center of the cutter head along the walking direction; the first driving device comprises a first driving transverse shaft and a first driving longitudinal shaft, the first driving transverse shaft is in power connection with the output end of the engine, the first driving longitudinal shaft is provided with the cutter head, and the first driving transverse shaft is in power connection with the first driving longitudinal shaft; the second driving device comprises a second driving shaft provided with a travelling wheel and a gearbox arranged on the second driving shaft, and the output end of the engine is in power connection with the second driving shaft through the gearbox.

Compared with the prior art, the mower engine is arranged on one side of the central line, the output end of the engine can transmit power to the driving front shaft and the gearbox respectively through a belt or a chain, the gearbox and the engine are not required to be arranged up and down, the difference between the arrangement heights of the gearbox and the engine is very small, and the overall height of the mower is greatly reduced; in addition, the output end of the engine drives the first driving transverse shaft through a belt or a chain, so as to drive the first driving longitudinal shaft to rotate, and the vibration of the engine caused by the vibration of the first driving longitudinal shaft can be weakened.

Preferably, the gearbox comprises a power switching assembly and a transmission system; the transmission system comprises a first gear directly or indirectly connected with the output end of the engine in a power mode, a first transmission shaft and a second gear arranged on the first transmission shaft; the first gear can be in power transmission with the first transmission shaft through the power switching assembly, and the first transmission shaft is in direct or indirect power connection with the second driving shaft through the second gear. The beneficial effect of this preferred scheme does: the gearbox comprises a power switching assembly which can control the connection or disconnection of power between the output end of the engine and the second driving shaft.

Preferably, the power switching assembly comprises a rotating member and a guide member, the rotating member is sleeved on the first transmission shaft, and the rotating member can move on the first transmission shaft along with the movement of the guide member; the rotating piece is provided with a first limiting part, the first gear is provided with a second limiting part, and when the rotating piece moves towards the direction of the first gear, the first limiting part can be matched with the second limiting part to enable the first gear to drive the first transmission shaft to rotate. The beneficial effect of this preferred scheme does: the transmission of power and the cutting-off process are easy to control through the arrangement of the rotating member and the guide member.

Preferably, the rotating member includes a first rotating portion and a second rotating portion connected by a first connecting portion, the first rotating portion and the second rotating portion are provided with a first accommodating space and a second accommodating space for sleeving the first transmission shaft, and a third accommodating space for accommodating a guide member is formed between an outer surface of the first connecting portion and the first rotating portion and the second rotating portion; the surface of the first transmission shaft is provided with a third limiting part, a fourth limiting part is arranged in the first containing space and/or the second containing space, and the third limiting part is matched with the fourth limiting part, so that the rotating piece can drive the first transmission shaft to rotate. The beneficial effect of this preferred scheme does: because the setting of spacing part for the connection between rotating member and first gear and the first transmission shaft is more stable, thereby it influences the transmission of power to be difficult for producing the phenomenon of skidding, has guaranteed the stability among the power transmission process.

Preferably, the gearbox further comprises a shell, a second connecting portion is arranged on the guide piece and used for being connected with a push rod, and one end of the push rod extends to the outside of the shell to form a push rod extending portion. The beneficial effect of this preferred scheme does: set up the casing, protect the gearbox, catch bar one end extends to form the catch bar extension outside the casing, convenient operation.

Preferably, the beneficial effects of the preferred scheme are as follows: the second driving shaft comprises a second transmission shaft and a third transmission shaft, the transmission system further comprises a third gear, the third gear is meshed with the second gear, a differential assembly is further arranged in the third gear, the differential assembly is composed of a fourth gear, a fifth gear and a planetary gear, the fourth gear and the fifth gear are symmetrically arranged and are connected, the second transmission shaft is connected with the fourth gear, the third transmission shaft is connected with the fifth gear, and the planetary gear is meshed between the fourth gear and the fifth gear; and/or the transmission system further comprises a sixth gear, the sixth gear is connected with the first gear, a fourth transmission shaft is arranged in the middle of the sixth gear, and the fourth transmission shaft is in power connection with the output end of the engine. The beneficial effect of this preferred scheme does: the differential assembly is arranged in the third gear, so that two wheels connected with the second transmission shaft and the third transmission shaft can realize different rotating speeds, the mower equipment can realize stepless differential running, the running condition of the equipment on uneven road surfaces and during turning is ensured to be good, and the mower is suitable for various complex working environments; set up sixth gear, fourth transmission shaft etc. between first gear and engine output, conveniently set up the gearbox casing, set up first gear in the casing, stretch out the gearbox through the fourth transmission shaft and be connected with engine output power, in addition, can further change speed through the gear ratio between first gear and the second gear.

Preferably, the impeller includes a rotating assembly including a plurality of support tabs disposed on the first drive longitudinal axis, the support tabs diverging outwardly along the first drive longitudinal axis; the edge of the supporting sheet is provided with a first blade, and the first blade is connected with the supporting sheet at an angle; and a second blade is connected to the support sheet and/or the first blade. The beneficial effect of this preferred scheme does: the first blade is arranged at the edge of the supporting sheet and is connected with the supporting sheet at an angle, so that a groove is formed between the first blade and the supporting sheet, when the first driving longitudinal shaft drives the rotating assembly to rotate, the rotating assembly can rotate to form effective air flow, and the air flow drives cut grass to move, so that the cut grass cannot be accumulated in the cutter head shield; the supporting sheet and/or the first blade is/are connected with the second blade, and the first blade and the second blade are matched to crush the cut grass, so that the grass is convenient for subsequent treatment.

Preferably, the rotating assembly is symmetrical about the first drive longitudinal axis. The beneficial effect of this preferred scheme does: when the first driving longitudinal shaft drives the rotating assembly to rotate, the dynamic balance is better.

Preferably, one end of the second blade is tilted, and the tilted end is far away from the support sheet and/or the first blade. The beneficial effect of this preferred scheme does: on the one hand, when the rotating assembly is rotatory, because the effect of centrifugal force, the perk end of second blade can outwards throw away, because the perk end is kept away from backing sheet or first blade, also can form the recess between second blade and backing sheet or the first blade, have the air pocket effect, can increase the intensity of air current or the scope of air current, on the other hand, because one end perk, make and form certain slope between the second blade both ends, the grass stubble up end that obtains during the cutting is the slope, that is to say the cutting edge of second blade is cutting grass when cutting is inclining, it is easier to compare horizontal cutting, and under equal transverse distance, the cutting length of second blade is longer, cutting efficiency is higher, the garrulous grass effect is better. In addition, in order to reserve a wind sweeping space and form effective airflow, the supporting sheet cannot be too close to the ground and the upper part of the cutter head shield, so that the cutting height is limited, and the grass close to the cutter head shield is easy to accumulate.

Preferably, the second blade is positioned on the upper surface or the lower surface of the support sheet or the first blade; when the second blade is positioned on the supporting sheet or the upper surface of the first blade, one end of the second blade tilts upwards; when the second blade is positioned on the lower surface of the support sheet or the first blade, one end of the second blade tilts downwards. The beneficial effect of this preferred scheme does: one end of the second blade arranged on the lower surface of the supporting sheet or the first blade tilts downwards, so that the cutting height is lower, and due to the fact that the cutting heights of the second blade are different, when the rotating assembly rotates, the second blade which rotates to the advancing direction performs cutting work, the second blade which does not rotate to the advancing direction can also cut residual over-high stubbles, and the blade utilization rate is higher; one end of the second blade arranged on the supporting sheet or the upper surface of the first blade is tilted upwards, so that cut grass can be effectively crushed, and the grass is prevented from being accumulated on the upper part of the supporting sheet to influence the rotation of the rotating assembly.

Preferably, the first driving longitudinal shaft is provided with an upper mounting part and a lower mounting part for mounting the support sheet. The beneficial effect of this preferred scheme does: because the grass that cuts probably is the length overlength, piles up easily and be not convenient for subsequent processing, sets up installation department installation backing sheet from top to bottom, can better garrulous grass. If the same grass is first cut by the blade of the upper blade (first blade and/or second blade), the lower blade may cut excessively tall stubble, and if the same grass is first cut by the lower blade, the upper blade may crush the cut grass.

Preferably, the support sheets on the upper mounting part and the support sheets on the lower mounting part are arranged in a staggered manner. The beneficial effect of this preferred scheme does: the supporting pieces on the upper mounting part and the lower mounting part are arranged in a staggered mode to better break grass, and the grass can be cut more frequently when meeting the blades in the process of rotation due to the staggered arrangement on the basis that the supporting pieces with the same number are arranged.

Preferably, still include the open-ended blade disc guard in below, rotating assembly sets up in the blade disc guard, the lower extreme of first drive vertical axis is located in the blade disc guard, the upper end of first drive vertical axis is in the upper portion of blade disc guard extends to outside the blade disc guard. The beneficial effect of this preferred scheme does: the cutter head shield can prevent the blades from hurting people, and a relatively closed space is formed, so that the airflow formed by the rotating assembly effectively drives the grass chopper to move in the space.

Preferably, the side surface of the cutterhead shield comprises a forward side and a non-forward side, and the non-forward side of the side surface of the cutterhead shield is provided with a grass outlet. The beneficial effect of this preferred scheme does: the advancing side of the side surface of the cutter head shield can be opened, grass can enter the cutter head shield more easily to be cut, and the side surface of the cutter head shield can also be closed, grass can enter the shield only from the lower part of the cutter head shield, and although the grass is inconvenient to cut, the safety is better; the grass outlet is arranged, and grass can be uniformly led out of the cutter head shield.

Preferably, the non-advancing side of the side face of the cutterhead shroud is partially or completely arc-shaped, and the center of the arc is located on the axis of the first driving longitudinal shaft. The beneficial effect of this preferred scheme does: the arc-shaped side surface enables the grass chopping to move along the track of the side surface more easily, and then the grass chopping is thrown out from the grass outlet.

Preferably, the grass blocking device further comprises a grass blocking piece, and the grass blocking piece is arranged outside the advancing side of the side face of the cutter head shield. The beneficial effect of this preferred scheme does: the grass blocking piece can press and bend grass in the advancing direction of the mower in advance, and cutting is facilitated.

Preferably, a mower frame is also included. The beneficial effect of this preferred scheme does: the mower frame can be connected with other structures to play a supporting role.

Preferably, the mower further comprises an auxiliary wheel, and the auxiliary wheel is connected with the mower frame or the cutter head shield. The beneficial effect of this preferred scheme does: the structure of the mower is not stable enough, the auxiliary wheels can be arranged on a mower rack or a cutter head shield, the auxiliary support is preferably arranged, the two auxiliary wheels are respectively arranged at two ends of the advancing side of the cutter head shield, and the auxiliary wheels are preferably universal wheels capable of rotating by 360 degrees.

Drawings

Fig. 1 is a schematic top view of a mower according to embodiment 1 of the present invention;

fig. 2 is a schematic view of the overall structure of the transmission case in embodiment 1 of the present invention;

fig. 3 is a schematic view of a rotating member of a transmission case according to embodiment 1 of the present invention;

FIG. 4 is a cross-sectional view of the first drive shaft of FIG. 2 taken along line AA';

fig. 5 is a schematic view of a transmission system of a transmission case according to embodiment 1 of the present invention;

fig. 6 is a schematic view of a differential assembly of a transmission case according to embodiment 1 of the present invention;

fig. 7 is a schematic view of a first chamber of a transmission case according to embodiment 1 of the present invention;

FIG. 8 is a schematic structural diagram of the first driving device in FIG. 1;

FIG. 9 is a schematic view of the attachment of the first drive longitudinal shaft to the cutter head of FIG. 8;

FIG. 10 is a top view of FIG. 9;

FIG. 11 is a top view of the rotating assembly of FIG. 9;

fig. 12 is an enlarged perspective view of fig. 11 at B.

Among them, 999-engine, 888-first drive unit, 777-second drive unit, 100-first drive longitudinal axis, 200-first drive longitudinal axis, 300-second drive shaft, 400-gearbox, 500-centerline, 600-mower housing, 700-road wheel, 800-auxiliary wheel;

1-a first gear, 11-a second limiting component, 2-a second gear, 3-a first transmission shaft, 31-a third limiting component, 41-a rotating component, 42-a guiding component, 43-a first limiting component, 44-a first rotating component, 45-a second rotating component, 46-a first accommodating space, 47-a second accommodating space, 48-a fourth limiting component, 49-a push rod, 410-a push rod extending part, 411-a connecting lever, 412-an operating cable, 413-an elastic component, 414-a first connecting part, 5-a shell, 51-a first accommodating cavity, 6-a third gear, 61-a fourth gear, 62-a fifth gear, 63-a planetary gear, 7-a second transmission shaft, 8-a third transmission shaft, 9-sixth gear, 10-seventh gear;

100-a first drive longitudinal axis, 101-an upper mount, 102-a lower mount, 110-a rotating assembly, 111-a support tab, 112-a first blade, 113-a second blade, 120-a head shroud, 121-an advance side of a side of the head shroud, 122-a non-advance side of the head shroud, 123-a grass outlet.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the embodiments of the present invention are combined below, and the technical solutions in the embodiments of the present invention are clearly and completely described.

Example 1

A lawnmower of the present embodiment, as shown in fig. 1 and 8, includes an engine 999, a first drive device 888, a second drive device 777, and a mower chassis 600; the engine 999 is positioned at one side of a center line 500, and the center line 500 passes through the center of the cutter disc along the walking direction; the first driving device 777 comprises a first driving transverse shaft 200 in power connection with the output end of the engine 999 and a first driving longitudinal shaft 100 provided with the cutter head, and the first driving transverse shaft 200 is in power connection with the first driving longitudinal shaft 100; the second driving device 777 includes a second driving shaft 300 with a traveling wheel 700 and a gearbox 400 disposed on the second driving shaft 300, the output end of the engine 999 is in power connection with the second driving shaft 300 through the gearbox 400, if not limited, the power connection means that the two are in transmission connection, and the two are in direct meshing transmission through gears on the shafts, or in transmission through gears on the shafts matching with chains, or in transmission through pulleys on the shafts matching with belts, or in transmission through shafts with gears additionally disposed between the two shafts.

As shown in fig. 2-7, the transmission 400 includes a power switching assembly and a transmission system, the transmission system includes a first gear 1 directly or indirectly connected with the output end of the engine through power, and further includes a first transmission shaft 3 and a second gear 2 disposed on the first transmission shaft 3, the second gear 2 can rotate along with the rotation of the first transmission shaft 3, and the first transmission shaft 3 and the second gear 2 rotate at the same speed; the first transmission shaft 3 is directly or indirectly in power connection with the second driving shaft 300 through the second gear 2, and the first gear 1 can transmit power with the first transmission shaft 3 through the power switching assembly.

As shown in fig. 2, the power switching assembly includes a rotating member 41 and a guiding member 42, the rotating member 41 is sleeved on the first transmission shaft 3, the rotating member 41 can move on the first transmission shaft 3 along with the movement of the guiding member 42, and the guiding member can be a shifting fork; the rotating piece 41 is provided with a first limiting part 43, the first gear 1 is provided with a second limiting part 11, and the first limiting part 43 is matched with the second limiting part 11; when the guide 42 moves towards the first gear 1, the rotating member 41 is driven to move towards the first gear 1, at this time, the first limiting member 43 can be matched with the second limiting member 11, and power can be transmitted from the first gear 1 to the second gear 2 through the rotating member 41 and the first transmission shaft 3, that is, the power is transmitted in the transmission system; when the guiding element 42 moves towards the second gear 2, the rotating element 41 is driven to move towards the second gear 2, at this time, the first limiting part 43 can be separated from the second limiting part 11, the power transmission between the first gear 1 and the rotating element 41 is cut off, that is, the power transmission in the transmission system is stopped. Further, the first limiting part 43 may be a limiting block, and the second limiting part 11 is a matching limiting groove; or the first position-limiting part 43 may be a position-limiting groove, and the second position-limiting part 11 is a matched position-limiting block.

As shown in fig. 3, the rotating member 41 includes a first rotating portion 44 and a second rotating portion 45 connected by a first connecting portion 414, and a first accommodating space 46 and a second accommodating space 47 for housing the first transmission shaft 3 are provided on the first rotating portion 44 and the second rotating portion 45; a third accommodating space for accommodating the guide 42 is formed between the outer surface of the first connecting portion 414 and the first rotating portion 44 and the second rotating portion 45, and the guide 42 can be sleeved on the third accommodating space, where the outer surface of the first connecting portion 414 refers to a surface of the first connecting portion 414 away from the first transmission shaft 3, and the guide 42 can slide up and down in the third accommodating space, as shown in fig. 3, but may also be configured not to slide up and down in the third accommodating space, and this is not limited herein.

The second limiting part 11 and the first limiting part 43 are matched or separated through the movement of the rotating part 41 on the first transmission shaft 3, so that the transmission and the cut-off of power in a transmission system are realized, the power switching mode of the utility model is simpler and easy to control, and the combination inside the transmission system is firmer and the phenomenon of slipping or mutual separation can not be generated through the mode of matching and limiting of the limiting block and the limiting groove during the power transmission; through setting up guide 42 between first rotating part 44 and second rotating part 45, can realize the removal through guide 42, promote the removal of first rotating part 44 or second rotating part 45, and then realize driving the removal of rotating part 41, this kind sets up simple structure, and fastness and controllability are better.

As shown in fig. 4, a third limiting member 31 is disposed on a surface of the first transmission shaft 3, as shown in fig. 3, a fourth limiting member 48 is disposed in the first accommodating space 46 and/or the second accommodating space 47, the fourth limiting member 48 can extend to the outside of the first accommodating space 46 and/or the second accommodating space 47, and the third limiting member 31 and the fourth limiting member 48 cooperate with each other to enable the rotating member 41 to drive the first transmission shaft 3 to rotate. Further, the third limiting part 31 may be a limiting block, and the fourth limiting part 48 is a matching limiting groove; or the third limiting part 31 can be a limiting groove, the fourth limiting part 48 is a matched limiting block, and the combination between the rotating part 41 and the first transmission shaft 3 is firmer and not easy to break away from and slip by a limiting block and a limiting groove matched limiting mode during power transmission, so that the stability of power transmission from the first gear 1 to the first transmission shaft 3 is ensured. Further, the number of the first stopper members 43 may be one or more than one, and the number of the third stopper members 31 may be one or more than one, and the number of the second stopper members 11 may be one or more than one.

In this embodiment, as a preferable scheme, the center lines of the first gear 1, the rotating member 41, the first transmission shaft 3 and the second gear 2 are on the same straight line, so as to ensure coaxial rotation.

As shown in fig. 2, the transmission case further includes a housing 5, a second connecting portion is disposed on the guide member 42, a push rod 49 is disposed on the second connecting portion, one end of the push rod 49 extends to the outside of the housing 5 to form a push rod extending portion 410, and the movement and the limiting of the guide member 42 are controlled by the push rod extending portion 410. Further, the push rod extension 410 is connected with an operation cable 412 through a connection lever 411, and the movement and the limit of the guide member 42 can be controlled by the operation cable 412.

As shown in fig. 2, when the cable 412 is in a tensioned state, the connecting lever 411 pushes the pushing rod 49 toward the inside of the housing 5, and at this time, the first limiting member 43 is disengaged from the second limiting member 11, the connection inside the transmission system is cut off, and power cannot be transmitted on the transmission system; when the operation cable 412 is loosened, the connecting lever 411 drives the pushing rod 49 to reset, at this time, the first limiting part 43 is matched with the second limiting part 11, power can be transmitted to the first transmission shaft 3 through the first gear 1 and the rotating piece 41, and further transmitted to the second gear 2, namely the power is transmitted on a traditional system, and the transmission and the cut-off of the power are controlled outside the shell 5 through the operation cable 412, so that the method is simple and practical.

As shown in fig. 2, an elastic component 413 is sleeved at the other end of the pushing rod 49, a first cavity 51 (shown in fig. 5 and 7) is arranged on the housing 5, the second connecting portion and the elastic component 413 are both located in the first cavity 51, and the elastic component 413 may be a spring.

When the power is cut off, that is, when the push rod 49 is pushed towards the inside of the housing 5 by the connecting lever 411, the elastic component 413 is compressed, when the power transmission is needed, the force applied to the push rod 49 disappears, the elastic component 413 can be elastically deformed to push the push rod 49 towards the outside of the housing 5, the reset state of the push rod 49 is further ensured, the first limiting component 43 is matched with the second limiting component 11, the power transmission is ensured, and the push rod 49 is prevented from being not reset so as to influence the matching of the first limiting component 43 and the second limiting component 11.

Further, a second accommodating cavity (not shown in the figure) can be arranged on the housing 5 on the opposite side of the first accommodating cavity 51, the second accommodating cavity is used for accommodating the push rod 49, the elastic component 413 sleeved on the push rod 49 can not enter the second accommodating cavity along with the push rod 49, when the push rod 49 pushes towards the inside of the housing 5, the push rod 49 can enter the second accommodating cavity, the elastic component 413 is compressed, and when the push rod 49 resets outwards, the elastic component 413 generates elastic deformation and can push the push rod 49 to reset. Through setting up first appearance chamber 51, can be spacing to the second connecting portion on the guide 42, with second connecting portion and catch bar 49 restriction removal in first appearance chamber 51, restrict the moving direction of guide 42 to a certain extent promptly, prevent that guide 42 from appearing the deviation when removing, influence the removal of rotating member 41 on first transmission shaft 3, first appearance chamber 51 can also carry out the spacing of a certain extent to elastomeric element 413 simultaneously, control elastomeric element 413 compression and elastic deformation's direction, prevent that elastomeric element 413 from taking place the deviation on compression and elastic deformation time direction, finally influence the removal of rotating member 41 on first transmission shaft 3.

As shown in fig. 5, in this embodiment as a preferable scheme, the second driving shaft 300 includes a second transmission shaft 7 and a third transmission shaft 8, the transmission further includes a third gear 6, the third gear 6 is engaged with the second gear 2, two ends of the third gear 6 are respectively connected with the second transmission shaft 7 and the third transmission shaft 8, the second transmission shaft 7 and the third transmission shaft 8 extend to the outside of the housing 5 and are used for being connected with a wheel, at this time, when power is transmitted to the third gear 6, the second transmission shaft 7 and the third transmission shaft 8 can be further driven to rotate, and then the wheel is driven to rotate.

As shown in fig. 6, the third gear 6 is meshed with the second gear 2, a differential assembly is further arranged in the third gear 6, the differential assembly is composed of a fourth gear 61, a fifth gear 62 and a planetary gear 63, the fourth gear 61 is connected with the third gear 6 and rotates with the third gear 6, and the rotating speeds of the fourth gear 61 and the third gear 6 are the same; the fifth gear 62 and the fourth gear 61 are symmetrically arranged; the second transmission shaft 7 is connected with the fourth gear 61, and the rotating speeds of the second transmission shaft 7 and the fourth gear 61 are consistent; the third transmission shaft 8 is connected with the fifth gear 62, and the rotating speeds of the third transmission shaft 8 and the fifth gear 62 are consistent; the planetary gear 63 is engaged between the fourth gear 61 and the fifth gear 62.

In the working process of the mower, power is transmitted to the fourth gear 61 and the fifth gear 62 through the third gear 6, so that the second transmission shaft 7 and the third transmission shaft 8 are driven to rotate, when the road surface is leveled, the resistance borne by the two wheels is the same, the stress on the second transmission shaft 7 is the same as that on the third transmission shaft 8, at the moment, the planetary gear 63 only revolves along with the third gear 6, and the rotating speeds of the two wheels are the same; when the road surface is uneven or turns, the two wheels are subjected to different resistances, for example, when the wheels turn inwards, the resistance on the inner side is large, and at the moment, the second transmission shaft 7 and the third transmission shaft 8 are subjected to different stresses, so that the planetary gear 63 can rotate, the fourth gear 61 and the fifth gear 62 on the two sides generate a rotation speed difference, and further, the stepless differential speed of the output power of the mower equipment is realized, and the equipment can smoothly turn or move.

In this embodiment, as a preferable scheme, the first gear 1 is indirectly connected with the output end of the engine through power, the transmission system further includes a sixth gear 9, the sixth gear 9 is connected with the first gear 1, a fourth transmission shaft (not shown in the figure) is arranged in the middle of the sixth gear 9, and the fourth transmission shaft extends to the outside of the housing 5 and is used for being connected with the output end of the engine. Further, a seventh gear 10 may be provided between the sixth gear 9 and the first gear 1, and the seventh gear 1 is engaged with the sixth gear 9 and the first gear 1 to transmit power, as shown in fig. 5.

The sixth gear 9 is connected with the output end of the engine through a fourth transmission shaft for power transmission, the torque on the sixth gear 9 is large, and when the sixth gear 9 is small and the seventh gear 10 is large, the power transmission between the sixth gear 9 and the seventh gear 10 is unstable, the seventh gear 10 is arranged between the sixth gear 9 and the first gear 1, the stability of power transmission can be ensured, and further, when the seventh gear 10 is larger than the sixth gear, the power transmission process is more stable.

As shown in fig. 9, the cutter head of the mower of the present embodiment includes a first driving longitudinal axis 100, a rotating assembly 110 symmetrical with respect to the first driving longitudinal axis 100, and a cutter head shield 120 with an opening at a lower portion, where the rotating assembly 110 is disposed in the cutter head shield 120, a lower end of the first driving longitudinal axis 100 is located in the cutter head shield 120, and an upper end of the first driving longitudinal axis 100 is located at an upper portion of the cutter head shield 120 and extends to the outside of the cutter head shield 120.

One or more mounting portions may be disposed on the first driving longitudinal shaft 100 for mounting the supporting sheet 111, as a preferable scheme in this embodiment, two mounting portions are disposed, which are the upper mounting portion 101 and the lower mounting portion 102, respectively, and the supporting sheet 111 on the upper mounting portion 101 is disposed in a staggered manner with the supporting sheet 111 on the lower mounting portion 102; the rotating assembly 110 includes a plurality of support plates 111 disposed on the first driving longitudinal shaft 100, and further, the rotating assembly 110 further includes a first blade 112 and a second blade 113.

As shown in fig. 11 and 12, the support plate 111 diverges outward along the first driving longitudinal axis 100, specifically, one end of the support plate 111 may be mounted on a mounting portion (an upper mounting portion 101 or a lower mounting portion 102) of the first driving longitudinal axis 100, and the other end of the support plate 111 diverges outward away from the first driving longitudinal axis 100, or a center of the support plate 111 may be mounted on the mounting portion of the first driving longitudinal axis 100, and the two ends of the support plate 111 respectively diverge outward away from the first driving longitudinal axis 100, and the support plate 111 may be perpendicular to the first driving longitudinal axis 100 or may not be perpendicular to the first driving longitudinal axis 100. The edge of the support sheet 111 is provided with a first blade 112, the first blade 112 is connected with the support sheet 111 at an angle, if the direction in which the support sheet 111 diverges outward is referred to as a length direction, the edge of the support sheet 111 extending from one end to the other end in the length direction is referred to as a length edge, the first blade 112 is preferably arranged on the length edge, the first blade 112 may be arranged on only one length edge, or both the two length edges may be provided with the first blade 112, the edge of the support sheet 111 may be provided with only one first blade 112, or may be provided with a plurality of first blades 112, and the length of the first blade 112 may be smaller than the length of the support sheet 111, or may be greater than the length of the support sheet 111, or may be equal to the length of the support sheet 111. In this embodiment, as a preferable mode, the support plate 111 is disposed perpendicular to the first driving longitudinal axis 100, the upper and lower surfaces of the support plate 111 are also perpendicular to the first driving longitudinal axis 100, the center of the support plate 111 is mounted on the mounting portion of the first driving longitudinal axis 100, the two length edges of the support plate 111 are each provided with a first blade 112, the length of the first blade 112 is preferably half of the length of the support plate 111, if one side of the first blade 112 connected to the edge of the support plate 111 is referred to as a connecting side, and the side opposite to the connecting side is referred to as an opposite side, the connecting side is preferably higher than the opposite side, that is, the opening of the groove formed by the first blade 112 and the support plate 111 faces downward, the angle between the first blade 112 and the support plate 111 (i.e., the included angle between the two surfaces of the groove) is preferably greater than 90 degrees, grass chopping and air flow are easier, the preferable angle is based on the basis that the support plate 111 is perpendicular to the first driving longitudinal axis 100, if the support tab 111 is not perpendicular to the first longitudinal drive axis 100, the preferred angle may also be less than 90 °.

The supporting sheet 111 and/or the first blade 112 are connected with a second blade 113, one end of the second blade 113 tilts, and the tilting end is far away from the supporting sheet 111 or the first blade 112, specifically, the second blade 113 is located on the upper surface or the lower surface of the supporting sheet 111 or the first blade 112; when the second blade 113 is located on the upper surface of the support sheet 111 or the first blade 112, one end of the second blade 113 tilts upwards; when the second blade 113 is located on the lower surface of the support plate 111 or the first blade 112, one end of the second blade 113 tilts downward. In this embodiment, as a preferable scheme, the second blade 113 is disposed on the supporting sheet 111, and a plurality of second blades 113 are disposed on both upper and lower surfaces of the supporting sheet 111, and one second blade 113 on the upper surface and one second blade 113 on the lower surface are both located near the end point.

As shown in fig. 10, the side surface of the cutterhead shroud 120 includes a forward side 121 and a non-forward side 122, the non-forward side 122 of the side surface of the cutterhead shroud 120 is provided with grass outlets 123, a part or all of the non-forward side 122 of the side surface of the cutterhead shroud 120 is in an arc shape, and the center of the arc shape is located on the axis of the first driving longitudinal shaft 100.

Furthermore, the mower further comprises a grass blocking member (not shown in the figures), the grass blocking member is arranged outside the advancing side 121 of the cutter head shield 120, and when the mower works, the grass blocking member can bend grass towards the advancing direction of the mower in advance along with the advancing of the mower, so that the grass is convenient to cut; as shown in fig. 1, auxiliary wheels 800 are further provided at both ends of the advancing side 121 of the side surface of the cutter head shroud 120, and the auxiliary wheels 800 are preferably universal wheels.

When the mower cutter head of the embodiment is used, the first driving longitudinal shaft 100 drives the rotating assembly 110 to rotate, that is, the first driving longitudinal shaft 100 drives the supporting sheet 111 to rotate, so as to drive the first blade 112 and the second blade 113 to rotate, cut grass and form air flow, and meanwhile, under the action of centrifugal force, cut grass has a tendency of being thrown outwards and is thrown out of the cutter head shield 120 when rotating to the grass outlet 123 of the cutter head shield 120.

The above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims (10)

1. A lawn mower is characterized by comprising an engine, a first driving device and a second driving device;

the engine is positioned on one side of the center line, and the center line penetrates through the center of the cutter head along the walking direction;

the first driving device comprises a first driving transverse shaft and a first driving longitudinal shaft, the first driving transverse shaft is in power connection with the output end of the engine, the first driving longitudinal shaft is provided with the cutter head, and the first driving transverse shaft is in power connection with the first driving longitudinal shaft;

the second driving device comprises a second driving shaft provided with a travelling wheel and a gearbox arranged on the second driving shaft, and the output end of the engine is in power connection with the second driving shaft through the gearbox.

2. The mower of claim 1 wherein the gearbox includes a power switching assembly and a transmission system;

the transmission system comprises a first gear directly or indirectly connected with the output end of the engine in a power mode, a first transmission shaft and a second gear arranged on the first transmission shaft;

the first gear can be in power transmission with the first transmission shaft through the power switching assembly, and the first transmission shaft is in direct or indirect power connection with the second driving shaft through the second gear.

3. The mower of claim 2 wherein the power switching assembly includes a rotating member and a guide, the rotating member being nested on the first drive shaft, the rotating member being movable on the first drive shaft in response to movement of the guide;

the rotating piece is provided with a first limiting part, the first gear is provided with a second limiting part, and when the rotating piece moves towards the direction of the first gear, the first limiting part can be matched with the second limiting part to enable the first gear to drive the first transmission shaft to rotate.

4. The mower according to claim 3, wherein the rotary member comprises a first rotary part and a second rotary part connected by a first connecting part, the first rotary part and the second rotary part are provided with a first accommodating space and a second accommodating space for sleeving the first transmission shaft, and a third accommodating space for accommodating a guide member is formed between the outer surface of the first connecting part and the first rotary part and the second rotary part;

the surface of the first transmission shaft is provided with a third limiting part, a fourth limiting part is arranged in the first containing space and/or the second containing space, and the third limiting part is matched with the fourth limiting part, so that the rotating piece can drive the first transmission shaft to rotate.

5. The mower of claim 3 wherein the gearbox further comprises a housing, the guide member having a second connecting portion for connecting a push rod, the push rod having one end extending outside the housing to form a push rod extension.

6. The mower of claim 2, wherein the second drive shaft comprises a second drive shaft and a third drive shaft, the drive system further comprises a third gear, the third gear is engaged with the second gear, a differential assembly is further disposed in the third gear, the differential assembly is composed of a fourth gear, a fifth gear and a planetary gear, the fourth gear is symmetrically disposed with the fifth gear and is connected with the third gear, the second drive shaft is connected with the fourth gear, the third drive shaft is connected with the fifth gear, and the planetary gear is engaged between the fourth gear and the fifth gear;

and/or the presence of a gas in the gas,

the transmission system further comprises a sixth gear, the sixth gear is connected with the first gear, a fourth transmission shaft is arranged in the middle of the sixth gear, and the fourth transmission shaft is in power connection with the output end of the engine.

7. The mower of claim 1 wherein said cutter deck includes a rotating assembly, said rotating assembly including a plurality of support tabs disposed on said first longitudinal drive axis, said support tabs diverging outwardly along said first longitudinal drive axis;

the edge of the supporting sheet is provided with a first blade, and the first blade is connected with the supporting sheet at an angle;

and a second blade is connected to the support sheet and/or the first blade.

8. The mower of claim 7, wherein one end of the second blade is tilted, and the tilted end is far away from the support sheet or the first blade;

and/or an upper mounting part and a lower mounting part for mounting the support sheet are arranged on the first driving longitudinal shaft.

9. The mower of claim 7 further comprising a cutterhead shroud open at the lower end, said rotating assembly being disposed within said cutterhead shroud, said first drive longitudinal shaft having a lower end located within said cutterhead shroud and an upper end extending out of said cutterhead shroud at an upper portion of said cutterhead shroud;

the side surface of the cutter head shield comprises a forward side and a non-forward side, and the non-forward side of the side surface of the cutter head shield is provided with a grass outlet.

10. The mower of claim 9 wherein a portion or all of the non-advancing side of the deck shroud side is arcuate, the center of the arc being located on the axis of the first longitudinal drive axis.

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