CN114467482A - Prevent lawn mower of stone and adaptation topography - Google Patents

Abstract

The invention belongs to the technical field of mowers, and particularly relates to a stone-proof and terrain-adaptive mower which comprises a self-walking rod, a push rod part, a clutch pull rod, an accelerator switch, a lower push rod, an engine, a locking handle, a grass collecting bag, a rear wheel, a front wheel, a protecting cover and a cutting mechanism, wherein in work, if a slope angle is touched, after the slope angle is reached, when the cutting machine does not swing to the other side of the slope angle, most of rotary fixed height wheels are still positioned on the side of the slope angle at a certain moment, and the cutting machine is always kept in a state of being basically parallel to the slope angle; when the cutting machine swings to the other side of the slope angle, most of the rotating fixed height wheels swing to be in a state of being basically parallel to the slope angle on the other side at a certain moment, and all the blades swing to be in a state of being basically parallel to the slope angle on the other side at the moment.

Description

Prevent lawn mower of stone and adaptation topography

Technical Field

The invention belongs to the technical field of mowers, and particularly relates to a mowers capable of preventing stones and adapting to terrains.

Background

The power of the hand-push type mower is generally larger than that of the brush cutter, so a steel blade is generally used for mowing; when the utility model touches stones, the situation of breaking the knife is easy to occur; even if the hand-push type mower is provided with the plastic fence, accidents that the broken knives and the broken particles fly out to hurt people often occur.

In addition, the common hand-push mower has the function of height adjustment, and the height of the walking wheels can be adjusted so as to adjust the height of the cutting part and the ground, so that the requirement on the grass height is met; however, when the hand mower is used for mowing the slope after being lifted, the grass at the slope angle is often cut very short as shown in fig. 3; the grass length is different from the grass length on the plane of the ground, which affects the beauty.

When the designed mower has the function of preventing the grass at stones and slope angles from being cut too short, the adjustment is convenient, and the adjustment difficulty is not increased.

The structure below the protecting cover can be called as a cutting component, and the cutting component is specially designed to solve the problems, so that the cutting component of the existing mower is only required to be replaced and improved, and the production and use cost is low.

The invention designs a lawn mower capable of preventing stones and adapting to terrains to solve the problems.

Disclosure of Invention

In order to achieve the purpose, the invention adopts the following technical scheme:

a lawn mower capable of preventing stones and adapting to terrain comprises a self-walking rod, a push rod part, a clutch pull rod, an accelerator switch, a lower push rod, an engine, a locking handle, a grass collecting bag, a rear wheel, a front wheel, a protecting cover and a cutting mechanism, wherein a telescopic shaft sleeve is fixedly installed on an output shaft of the engine, a telescopic inner shaft is installed in the telescopic shaft sleeve in a sliding mode through matching of a guide block and a guide groove, and a first spring is installed between the telescopic inner shaft and the telescopic shaft sleeve; the lower end of the telescopic inner shaft is provided with an installation rotating shaft through a cross universal joint; the second mounting disc is mounted on the telescopic inner shaft, and the second mounting disc is in transmission connection with the telescopic shaft sleeve through a gear ring, a planet wheel, a planet carrier and a sun wheel; the first mounting disc is rotatably mounted on the telescopic inner shaft through the rotary matching of the annular guide block and the annular groove, a plurality of guide sliding rods are uniformly and fixedly mounted at the upper end of the first mounting disc in the circumferential direction, and the guide sliding rods are in sliding fit with the second mounting disc; the first fixed disc is rotatably arranged on the mounting rotating shaft through the rotary matching of the annular guide block and the annular groove, the first fixed disc is connected with the first mounting disc through an annular universal joint, and the swinging center of the annular universal joint is the same as that of the cross universal joint; the second fixed disk is fixedly arranged at the lower end of the installation rotating shaft, and a plurality of cutting structures and a plurality of fixed height wheels which are uniformly distributed in the circumferential direction are uniformly arranged on the second fixed disk.

The cutting mechanism comprises a fixed rotating shaft, a blade mounting disc and blades, wherein the fixed rotating shaft is rotatably mounted on the second fixed disc, the blade mounting disc is fixedly mounted at the lower end of the fixed rotating shaft, and a plurality of blades are uniformly arranged on the blade mounting disc in a circumferential direction in a swinging mode; the fixed rotating shaft is in transmission connection with the first mounting disc through a gear ring and a gear.

The fixed height wheel comprises a walking wheel support, a walking wheel and a second spring, wherein a limiting rod is rotatably mounted at the upper end of the walking wheel support, the limiting rod is vertically and slidably mounted on a second fixed disc, and the second spring is mounted between the walking wheel support and the second fixed disc; and a limiting mechanism is arranged between the first fixed disc and the limiting rod.

As a preferred scheme, a gear ring is fixedly installed on the telescopic shaft sleeve, a planet carrier is fixedly installed on the protective cover through three connecting rods which are uniformly distributed in the circumferential direction, three planet wheels are rotatably installed on the planet carrier, and the three planet wheels are meshed with the gear ring; the sun wheel is rotatably arranged on the planet carrier and is meshed with the three planet wheels; the sun gear is fixedly connected with the second mounting plate.

Preferably, a toothed ring is fixedly mounted on the lower side of the first fixed wheel, a first gear is fixedly mounted at the upper end of each fixed rotating shaft, and the first gear is meshed with the toothed ring.

As a preferred scheme, a plurality of clamping grooves are uniformly formed in the limiting rod from top to bottom.

A limiting mechanism is arranged between the first fixed disk and the limiting rod and comprises a limiting block, a third spring, an installation sleeve and a connection pull rope, wherein the installation sleeve is fixedly arranged on the lower side of the first fixed disk, the limiting block is slidably arranged in the installation sleeve, and the third spring is arranged between the limiting block and the sliding sleeve; the third spring is a compression spring; the limiting blocks are matched with the clamping grooves on the corresponding limiting rods; the one end fixed mounting that the stopper is located the installation cover has the connection stay cord, connects the stay cord and wears out the installation cover outside, connects whether the cooperation of stay cord steerable stopper and draw-in groove through the pulling.

Preferably, the upper end of the first fixed disk is fixedly provided with a fixed ring, a third connecting ring is vertically and slidably arranged on the first fixed disk, and the third connecting ring is fixedly connected with the connecting pull rope; the second connecting ring is rotatably arranged on the fixed ring; the first connecting ring is rotatably arranged on the upper side of the third connecting ring; fixed mounting has the fixed stay on the second go-between, and fixed mounting has the fag end between fixed stay and the protecting cover, and the one end fixed mounting of adjusting the stay cord is on first go-between, and the other end of adjusting the stay cord penetrates in the fag end after passing the second go-between, and it has the pull ring to wear out the after-fixing from the protecting cover.

Preferably, the fixed ring is uniformly provided with a plurality of guide chutes distributed up and down in the circumferential direction, the inner circumferential surface of the third connecting ring is uniformly and fixedly provided with a plurality of guide sliders in the circumferential direction, and the third connecting ring is mounted on the fixed ring through the sliding fit of the guide sliders and the guide chutes.

Preferably, a first guide wheel for guiding the adjusting rope is mounted on the upper side of the second connecting ring.

Preferably, a second guide wheel for guiding the connection pull rope is mounted on the lower side of the first fixed disc.

Preferably, a plurality of guide rods uniformly distributed in the circumferential direction are fixedly mounted at the upper end of the first connecting ring, and the guide rods are in sliding fit with the second connecting ring.

Compared with the prior art, the invention has the advantages that:

1. when the height-fixing wheel is used for fixing height, firstly, the walking wheel is heightened through an adjusting mechanism on the mower, meanwhile, the pull ring pulls the adjusting pull rope, the adjusting pull rope pulls the first connecting ring to move upwards relative to the second connecting ring, the first connecting ring drives the third connecting ring to move upwards, the third connecting ring pulls the connecting pull rope, the connecting pull rope pulls the corresponding limiting block to move outwards relative to the clamping groove on the limiting rod, the limiting on the limiting rod is relieved, then, the height of the height-fixing wheel is adjusted, after the adjustment is completed, the pull ring is loosened, the limiting block extends out under the action of the third spring, and finally, the limiting block is clamped in the clamping groove of the limiting rod, and the height direction of the height-fixing wheel is limited; the adjustment is more convenient.

2. When the slope angle is cut, the fixed height wheel can be adjusted up and down relative to the protecting cover according to the height of the slope angle, and in the process, the installation rotating shaft, the telescopic inner rod, the first fixing disc and the second fixing disc can slide up and down relative to the telescopic shaft sleeve; and the design of direction slide bar also guarantees to decide the high wheel according to the relative protecting cover of the height of slope angle in-process from top to bottom, and first mounting disc and second mounting disc can carry out the transmission smoothly.

3. According to the invention, the rotation direction of the blade is opposite to the revolution direction through the transmission of the gear ring, the planet gear, the sun gear, the first gear and the gear ring, the rotation speed of the blade is improved through the transmission, and the cutting efficiency is improved through the change of the direction and the improvement of the rotation speed of the blade. When the cutting part of the invention is an improvement of the cutting part of the original mower, the defect that the speed of the blade cutting line is not enough after the original large blade is changed into the small blade is overcome.

4. The cutting part consists of a plurality of cutting mechanisms which are uniformly distributed in the circumferential direction, and blades in each cutting mechanism are uniformly arranged on a blade mounting disc in a swinging mode in the circumferential direction; because the blade is small and the moment of inertia is small, the blade is easy to stop in time when meeting stones, and meanwhile, because the blade is arranged on the blade mounting disc in a swinging mode, the blade can swing to avoid the stones after meeting the stones, namely the blade designed by the invention has the function of protecting the blade if meeting the stones in the using process.

5. In operation, if the cutting machine runs to one side of a slope angle and does not swing to the other side of the slope angle after the cutting machine runs to the one side of the slope angle, most of the rotating fixed height wheels are still positioned at the side of the slope angle at a certain moment, and the cutting machine is always kept in a state of being basically parallel to the slope angle; when the cutting machine swings to the other side of the slope angle, most of the rotating fixed height wheels swing to be in a state of being basically parallel to the slope angle on the other side at a certain moment, and all the blades swing to be in a state of being basically parallel to the slope angle on the other side at the moment. The cross universal joint and the annular universal joint can enable the cutting mechanism to adapt to two slopes of the slope angle and the slope angle.

Drawings

Fig. 1 is an external view of an entire part.

Fig. 2 is a schematic view of the overall component distribution.

Fig. 3 is a schematic view of the slope cutting principle of a conventional cutting machine.

Figure 4 is a schematic view of the protective cover construction.

Fig. 5 is a schematic view of the adjustment cord installation.

FIG. 6 is a schematic view of the setting wheel and cutting mechanism installation.

Fig. 7 is a schematic view of a fixed-height wheel distribution.

Fig. 8 is a schematic view of the positioning wheel and cutting mechanism arrangement.

Fig. 9 is an installation schematic view of the first fixed disk and the second fixed disk.

FIG. 10 is a schematic view of an annular gimbal mounting.

FIG. 11 is a cross-joint installation schematic.

Fig. 12 is a schematic view of the leveling wheel and blade mounting.

Figure 13 is a schematic view of a fixed height wheel installation.

Fig. 14 is a schematic view of the engagement between the stopper and the stopper rod.

Fig. 15 is a schematic view of the primary and secondary connecting rings being installed.

Number designation in the figures: 1. a protective cover; 2. adjusting the pull rope; 3. a fixed height wheel; 4. a cutting mechanism; 5. a first fixed disk; 6. a second fixed disk; 7. a connecting rod; 8. a telescopic shaft sleeve; 9. a first spring; 10. a telescopic inner shaft; 11. an annular gimbal; 12. a cross universal joint; 13. installing a rotating shaft; 14. a ring gear; 15. a planet wheel; 16. a planet carrier; 17. a guide slide bar; 18. a first mounting plate; 19. a second mounting plate; 20. a sun gear; 21. a first gear; 22. a blade mounting plate; 23. a blade; 24. a toothed ring; 25. a traveling wheel bracket; 26. a card slot; 27. a second spring; 28. a limiting block; 29. a third spring; 30. installing a sleeve; 31. a guide chute; 32. a first connecting ring; 33. connecting ropes; 34. a second connection ring; 35. a first guide wheel; 36. a limiting rod; 37. a third connecting ring; 38. a fixing ring; 39. a guide slider; 40. a second guide wheel; 41. a self-propelled boom; 42. a push rod part; 43. a clutch pull rod; 44. an accelerator switch; 45. a lower push rod; 46. an engine; 47. locking the handle; 48. a grass collecting bag; 49. a rear wheel; 50. a front wheel; 56. connecting a pull rope; 57. fixing the rotating shaft; 58. a traveling wheel; 59. a guide bar; 60. and (7) fixing and supporting.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples or figures are illustrative of the present invention and are not intended to limit the scope of the present invention.

Unless otherwise specified, in the present invention, if there is an orientation or positional relationship indicated by terms of "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, rather than to indicate or imply that the device or element so referred to must be of a particular length, orientation, configuration and operation in a particular orientation, therefore, the terms describing orientation or positional relationship in the present invention are used for illustrative purposes only, and should not be construed as limiting the present patent, specific meanings of the above terms can be understood by those of ordinary skill in the art in light of the specific circumstances in conjunction with the accompanying drawings.

Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are used broadly and encompass, for example, being fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, the device comprises a self-propelled rod 41, a push rod part 42, a clutch pull rod 43, an accelerator switch 44, a lower push rod 45, an engine 46, a locking handle 47, a grass collecting bag 48, a rear wheel 49, a front wheel 50, a protecting cover 1 and a blade 23, as shown in fig. 4 and 5, an extension shaft sleeve 8 is fixedly installed on an output shaft of the engine 46, as shown in fig. 8 and 9, an extension inner shaft 10 is installed in the extension shaft sleeve 8 in a sliding manner through matching of a guide block and a guide groove, and a first spring 9 is installed between the extension inner shaft 10 and the extension shaft sleeve 8; as shown in fig. 11, the lower end of the telescopic inner shaft 10 is provided with a mounting rotating shaft 13 through a universal joint cross 12; as shown in fig. 6, 9 and 11, the second mounting plate 19 is mounted on the inner telescopic shaft 10, and the second mounting plate 19 is in transmission connection with the telescopic shaft sleeve 8 through a gear ring 14, a planet gear 15, a planet carrier 16 and a sun gear 20, the gear ring 14 is fixedly connected with the telescopic shaft sleeve 8, and the sun gear 20 is fixedly connected with the second mounting plate 19; the first mounting plate 18 is rotatably mounted on the telescopic inner shaft 10 through the rotation matching of the annular guide block and the annular groove, as shown in fig. 11, a plurality of guide slide bars 17 are uniformly and fixedly mounted on the upper end of the first mounting plate 18 in the circumferential direction, and the guide slide bars 17 are in sliding fit with the second mounting plate 19; the first fixed disk 5 is rotatably installed on the installation rotating shaft 13 through the rotary matching of the annular guide block and the annular groove, the first fixed disk 5 is connected with the first installation disk 18 through the annular universal joint 11, and the swinging center of the annular universal joint 11 is the same as that of the cross universal joint 12; the second fixed disk 6 is fixedly installed at the lower end of the installation rotating shaft 13, as shown in fig. 7, 8 and 12, a plurality of cutting structures and a plurality of fixed height wheels 3 which are evenly distributed in the circumferential direction are evenly installed on the second fixed disk 6 in the circumferential direction.

As shown in fig. 12, the cutting mechanism 4 includes a fixed rotating shaft 57, a blade mounting plate 22 and blades 23, wherein the fixed rotating shaft 57 is rotatably mounted on the second fixed plate 6, the blade mounting plate 22 is fixedly mounted at the lower end of the fixed rotating shaft 57, and a plurality of blades 23 are uniformly and circumferentially and swingably mounted on the blade mounting plate 22; the fixed rotating shaft 57 is in transmission connection with the first mounting plate 18 through the gear ring 24 and the gear.

The self-walking rod 41, the push rod part 42, the pull ring, the accelerator switch 44, the lower push rod 45, the engine 46, the locking handle 47, the grass collecting bag 48, the rear wheel 49, the front wheel 50 and the protective cover 1 are all the existing structures of the existing products.

The cross universal joint 12 and the annular universal joint 11 designed in the invention have the functions of being capable of adapting to different slope angles in the use process, ensuring that the height of the sloping grass is equivalent to that of the sloping grass, and simultaneously ensuring the smooth transmission of the rotating force.

When a slope angle is cut, the fixed height wheel 3 can be vertically adjusted relative to the protecting cover 1 according to the height of the slope angle, and in the process, the installation rotating shaft 13, the telescopic inner rod, the first fixing disk 5 and the second fixing disk 6 can slide up and down relative to the telescopic shaft sleeve 8; and the design of the guide slide bar 17 also ensures that the first mounting disc 18 and the second mounting disc 19 can smoothly transmit in the process of adjusting the fixed high wheel 3 up and down relative to the protecting cover 1 according to the height of the slope angle.

The cutting part in the invention is composed of a plurality of cutting mechanisms 4 which are uniformly distributed in the circumferential direction, and the blade 23 in each cutting mechanism 4 is uniformly arranged on the blade mounting disc 22 in a swinging mode in the circumferential direction; because the blade 23 is small, the moment of inertia is small, and the blade is easy to stop in time when meeting stones, and meanwhile, because the blade 23 is arranged on the blade mounting disc 22 in a swinging mode, the blade 23 can swing to avoid stones after meeting stones, namely the blade 23 designed by the invention has the function of protecting the blade 23 when meeting stones in the using process.

As shown in fig. 13, the height fixing wheel 3 includes a walking wheel bracket 25, a walking wheel 58, and a second spring 27, wherein the upper end of the walking wheel bracket 25 is rotatably mounted with a limiting rod 36, the limiting rod 36 is slidably mounted on the second fixed disk 6 up and down, and the second spring 27 is mounted between the walking wheel bracket 25 and the second fixed disk 6; and a limiting mechanism is arranged between the first fixed disk 5 and the limiting rod 36.

The designed height fixing wheel 3 is of a universal wheel structure, and the reason for designing the height fixing wheel into the universal wheel is that the height fixing wheel 3 which rotates in the using process can swing and hide in a suitable mode through the universal wheel when the height fixing wheel touches obstacles such as stones.

As shown in fig. 11, a gear ring 14 is fixedly mounted on the telescopic shaft sleeve 8, as shown in fig. 10, a planet carrier 16 is fixedly mounted on the protecting cover 1 through three connecting rods 7 which are uniformly distributed in the circumferential direction, three planet wheels 15 are rotatably mounted on the planet carrier 16, and the three planet wheels 15 are meshed with the gear ring 14; the sun gear 20 is rotatably mounted on the planet carrier 16, and the sun gear 20 is meshed with the three planet gears 15; sun gear 20 is fixedly connected to second mounting plate 19.

As shown in fig. 12, a toothed ring 24 is fixedly mounted on the lower side of the first fixed wheel, a first gear 21 is fixedly mounted on the upper end of each fixed rotating shaft 57, and the first gear 21 is meshed with the toothed ring 24.

According to the invention, the rotation of an output shaft of an engine 46 can drive the telescopic shaft sleeve 8 to rotate, the rotation of the telescopic shaft sleeve 8 drives the telescopic inner shaft 10 to rotate, and the rotation of the telescopic inner shaft 10 drives the installation rotating shaft 13 to rotate through the cross universal joint 12; the mounting rotating shaft 13 rotates to drive the second fixed disk 6 to rotate, and the second fixed disk 6 rotates to drive the cutting mechanism 4 and the travelling mechanism to revolve around the axis of the mounting rotating shaft 13. The telescopic shaft sleeve 8 can drive the gear ring 14 to rotate while rotating, the gear ring 14 rotates to drive the three planet gears 15 to rotate, the three planet gears 15 rotate to drive the sun gear 20 to rotate, the sun gear 20 rotates to drive the second mounting disc 19 to rotate, the second mounting disc 19 rotates to drive the first mounting disc 18 to rotate through the guide slide bar 17, the first mounting disc 18 rotates to drive the first fixing disc 5 to rotate through the annular universal joint 11, the first fixing disc 5 rotates to drive the gear ring 24 to rotate, the gear ring 24 rotates to drive the first gear 21 to rotate, the first gear 21 rotates to drive the fixed rotating shaft 57 to rotate, the fixed rotating shaft 57 rotates to drive the blade mounting disc 22 to rotate, the blade mounting disc 22 rotates to drive the blade 23 to rotate, and the blade 23 can automatically expand under the centrifugal action to cut; that is, the blades 23 revolve around the mounting rotation shafts 13 while rotating around the corresponding fixed rotation shafts 57.

According to the invention, the rotation direction of the blade 23 is opposite to the revolution direction through the transmission of the gear ring 14, the planet gear 15, the sun gear 20, the first gear 21 and the gear ring 24, the rotation speed of the blade 23 is improved through the transmission, and the cutting efficiency is improved through the change of the direction and the improvement of the rotation speed of the blade 23. When the cutting part of the invention is an improvement of the cutting part of the original mower, the defect that the speed of cutting the line by the blade 23 is not enough after the original large blade 23 is changed into the small blade 23 is overcome.

As shown in fig. 14, a plurality of slots 26 are uniformly formed on the limiting rod 36 from top to bottom.

As shown in fig. 14 and 15, the limiting mechanism installed between the first fixed disk 5 and the limiting rod 36 includes a limiting block 28, a third spring 29, an installation sleeve 30, and a connection pull rope 56, wherein the installation sleeve 30 is fixedly installed at the lower side of the first fixed disk 5, the limiting block 28 is slidably installed in the installation sleeve 30, and the third spring 29 is installed between the limiting block 28 and the sliding sleeve; the third spring 29 is a compression spring; the limiting blocks 28 are matched with the clamping grooves 26 on the corresponding limiting rods 36; the end of the limiting block 28 located in the mounting sleeve 30 is fixedly provided with a connecting pull rope 56, as shown in fig. 7, 8 and 9, the connecting pull rope 56 penetrates out of the mounting sleeve 30, and whether the limiting block 28 is matched with the clamping groove 26 can be controlled by pulling the connecting pull rope 56.

In the invention, after the limiting block 28 is inserted into the limiting groove, the limiting block 28 can limit the limiting rod 36, and the limiting rod 36 is locked by sliding up and down relative to the first fixing plate 5, that is, the height of the fixed height wheel 3 is fixed to be adapted to the height adjustment of the walking wheel 58.

As shown in fig. 7, 8 and 14, a fixing ring 38 is fixedly mounted at the upper end of the first fixing disk 5, a third connecting ring 37 is vertically slidably mounted on the first fixing disk 5, and the third connecting ring 37 is fixedly connected with a connecting pull rope 56; the second connection ring 34 is rotatably mounted on the fixed ring 38; the first connection ring 32 is rotatably installed at an upper side of the third connection ring 37; fixed mounting has the fixed stay 60 on the second go-between 34, and fixed mounting has the fag end between fixed stay 60 and the protecting cover 1, as shown in fig. 15, adjusts the one end fixed mounting of stay cord 2 on first go-between 32, and the other end of adjusting stay cord 2 penetrates in the fag end after passing second go-between 34, is fixed with the pull ring after wearing out from protecting cover 1.

In the invention, if the limiting block 28 does not completely fit with the clamping groove 26 after extending out under the action of the third spring 29, the height of the limiting rod 36 is slightly adjusted, so that the limiting block 28 and the clamping groove 26 are completely aligned and matched, and the limiting block 28 smoothly slides into the clamping groove 26 to limit the limiting rod 36.

As shown in fig. 15, a plurality of guide chutes 31 are uniformly arranged in the circumferential direction on the fixing ring 38, a plurality of guide sliders 39 are uniformly fixed in the circumferential direction on the inner circumferential surface of the third connecting ring 37, and the third connecting ring 37 is mounted on the fixing ring 38 by the sliding fit of the guide sliders 39 and the guide chutes 31.

As shown in fig. 14 and 15, a first guide wheel 35 for guiding the adjustment cord 2 is mounted on the upper side of the second connection ring 34.

As shown in fig. 15, a second guide roller 40 for guiding the connection cord 56 is installed on the lower side of the first fixed disk 5.

As shown in fig. 14, a plurality of circumferentially uniformly distributed guide rods 59 are fixedly mounted on the upper end of the first connecting ring 32, and the guide rods 59 are slidably fitted with the second connecting ring 34. The guide bar 59 guides the second connection ring 34.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.

The technical route of the invention is as follows: the designed cutting component mainly solves the problems of cutting and preventing the broken stone blade 23 at the rear slope corner after the height is increased, and uses a cutting mechanism 4 with a small blade 23, two universal joint mechanisms and a fixed height wheel 3 for solving the problems. The cutting mechanism 4 with the small blades 23 needs to be designed with an acceleration transmission to achieve a higher rotation speed due to the improvement of the original mower. The series of structures disclosed in the present invention have been devised in consideration of the needs of the various structures described above.

The implementation mode is as follows: when the height of the height-fixing wheel 3 is fixed, firstly, the walking wheel 58 is heightened through an adjusting mechanism on the mower, meanwhile, the adjusting pull rope 2 is pulled by the pull ring, so that the adjusting pull rope 2 pulls the first connecting ring 32 to move upwards relative to the second connecting ring 34, the first connecting ring 32 drives the third connecting ring 37 to move upwards, the third connecting ring 37 pulls the connecting pull rope 56, the corresponding limiting block 28 is pulled by the connecting pull rope 56 to move outwards relative to the clamping groove 26 on the limiting rod 36, the limiting on the limiting rod 36 is released, then, the height of the height-fixing wheel 3 is adjusted, after the adjustment is completed, the pull ring is loosened, so that the limiting block 28 extends out under the action of the third spring 29 and is finally clamped in the clamping groove 26 of the limiting rod 36, the height direction of the height-fixing wheel 3 is limited, and the height-fixing wheel 3 is adjusted to be capable of working. The height adjustment of the travelling wheels 58 can ensure the height between the upper end of the cutting part and the ground, and the height adjustment of the fixed height wheels 3 can ensure the height between the cutting mechanism 4 and the ground.

As shown in fig. 3, in operation, if the cutting machine runs to one side of the slope angle and does not swing to the other side of the slope angle after the cutting machine runs to one side of the slope angle, most of the rotating fixed height wheels 3 are still positioned at the side of the slope angle at a certain moment, and the cutting machine is always kept in a state of being basically parallel to the slope angle; when the cutting machine swings to the other side of the slope angle, most of the rotating fixed height wheels 3 swing to be in a state of being basically parallel to the slope angle at the other side at a certain moment, and all the blades 23 swing to be in a state of being basically parallel to the slope angle at the other side at the moment; all the blades 23 will then also swing substantially parallel to the side bevel.

Claims (9)

1. The utility model provides a prevent lawn mower of stone and adaptation topography, it includes from walking pole, push rod position, separation and reunion pull rod, throttle switch, lower push rod, engine, locking handle, grass-collecting bag, rear wheel, front wheel, protecting cover, cutting mechanism, its characterized in that: a telescopic shaft sleeve is fixedly arranged on an output shaft of the engine, a telescopic inner shaft is slidably arranged in the telescopic shaft sleeve through the matching of a guide block and a guide groove, and a first spring is arranged between the telescopic inner shaft and the telescopic shaft sleeve; the lower end of the telescopic inner shaft is provided with an installation rotating shaft through a cross universal joint; the second mounting disc is mounted on the telescopic inner shaft, and the second mounting disc is in transmission connection with the telescopic shaft sleeve through a gear ring, a planet wheel, a planet carrier and a sun wheel; the first mounting disc is rotatably mounted on the telescopic inner shaft through the rotary matching of the annular guide block and the annular groove, a plurality of guide sliding rods are uniformly and fixedly mounted at the upper end of the first mounting disc in the circumferential direction, and the guide sliding rods are in sliding fit with the second mounting disc; the first fixed disc is rotatably arranged on the mounting rotating shaft through the rotary matching of the annular guide block and the annular groove, the first fixed disc is connected with the first mounting disc through an annular universal joint, and the swinging center of the annular universal joint is the same as that of the cross universal joint; the second fixed disk is fixedly arranged at the lower end of the mounting rotating shaft, and a plurality of cutting structures and a plurality of fixed height wheels which are uniformly distributed in the circumferential direction are uniformly arranged on the second fixed disk in the circumferential direction;

the cutting mechanism comprises a fixed rotating shaft, a blade mounting disc and blades, wherein the fixed rotating shaft is rotatably mounted on the second fixed disc, the blade mounting disc is fixedly mounted at the lower end of the fixed rotating shaft, and a plurality of blades are uniformly arranged on the blade mounting disc in a circumferential direction in a swinging mode; the fixed rotating shaft is in transmission connection with the first mounting disc through a gear ring and a gear;

the fixed height wheel comprises a walking wheel support, a walking wheel and a second spring, wherein a limiting rod is rotatably mounted at the upper end of the walking wheel support, the limiting rod is vertically and slidably mounted on a second fixed disc, and the second spring is mounted between the walking wheel support and the second fixed disc; and a limiting mechanism is arranged between the first fixed disc and the limiting rod.

2. The stone-resistant and terrain-adaptable lawnmower of claim 1, wherein: a gear ring is fixedly arranged on the telescopic shaft sleeve, the planet carrier is fixedly arranged on the protective cover through three connecting rods which are uniformly distributed in the circumferential direction, the three planet gears are rotatably arranged on the planet carrier, and the three planet gears are meshed with the gear ring; the sun gear is rotatably arranged on the planet carrier and is meshed with the three planet gears; the sun gear is fixedly connected with the second mounting plate.

3. The stone-resistant and terrain-adaptable lawnmower of claim 1, wherein: the downside fixed mounting of first tight pulley has the ring gear, every the equal fixed mounting in upper end of fixed rotating shaft has a first gear, first gear and ring gear meshing.

4. The stone-resistant and terrain-adaptable lawnmower of claim 1, wherein: a plurality of clamping grooves are uniformly formed in the limiting rod from top to bottom;

a limiting mechanism is arranged between the first fixed disk and the limiting rod and comprises a limiting block, a third spring, an installation sleeve and a connection pull rope, wherein the installation sleeve is fixedly arranged on the lower side of the first fixed disk, the limiting block is slidably arranged in the installation sleeve, and the third spring is arranged between the limiting block and the sliding sleeve; the third spring is a compression spring; the limiting blocks are matched with the clamping grooves on the corresponding limiting rods; the stopper is located the one end fixed mounting in the installation cover and is connected the stay cord, connects the stay cord and wears out the installation cover outside, connects whether cooperation of stay cord steerable stopper and draw-in groove through the pulling.

5. The anti-rock and terrain-compatible lawnmower of claim 4, wherein: the upper end of the first fixed disk is fixedly provided with a fixed ring, a third connecting ring is vertically and slidably arranged on the first fixed disk, and the third connecting ring is fixedly connected with a connecting pull rope; the second connecting ring is rotatably arranged on the fixed ring; the first connecting ring is rotatably arranged on the upper side of the third connecting ring; fixed mounting has the fixed stay on the second go-between, and fixed mounting has the fag end between fixed stay and the protecting cover, and the one end fixed mounting of adjusting the stay cord is on first go-between, and the other end of adjusting the stay cord penetrates in the fag end after passing the second go-between, and it has the pull ring to wear out the after-fixing from the protecting cover.

6. The stone-resistant and terrain-adaptable lawnmower of claim 5, wherein: the fixing ring is uniformly provided with a plurality of guide sliding grooves which are distributed up and down in the circumferential direction, the inner circular surface of the third connecting ring is uniformly and fixedly provided with a plurality of guide sliding blocks in the circumferential direction, and the third connecting ring is arranged on the fixing ring through the sliding fit of the guide sliding blocks and the guide sliding grooves.

7. The stone-resistant and terrain-adaptable lawnmower of claim 5, wherein: and a first guide wheel which plays a role in guiding the adjusting pull rope is arranged on the upper side of the second connecting ring.

8. The stone-resistant and terrain-adaptable lawnmower of claim 4, wherein: and a second guide wheel which plays a role in guiding the connection pull rope is arranged on the lower side of the first fixed disk.

9. The stone-resistant and terrain-adaptable lawnmower of claim 5, wherein: the upper end of the first connecting ring is fixedly provided with a plurality of guide rods which are uniformly distributed in the circumferential direction, and the guide rods are in sliding fit with the second connecting ring.

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