Planetary multi-purpose lawn mower

Abstract

The present invention relates to garden equipment, in particular to a planetary multifunctional lawn mower. It comprises a vehicle body, a fixed frame hinged to the front end of the vehicle frame, the fixed frame comprises a swing frame and a frame body at the front end thereof, a supporting wheel is arranged at the lower part of the frame body, and a lifting mechanism is arranged between the swing frame and the vehicle frame; swing arms hinged to the two ends of the frame body are respectively arranged, a swing oil cylinder is arranged between the frame body and the swing arm, the front ends of the two swing arms are respectively hinged to the connecting rod, and the front ends of the two connecting rods are hinged; a grass cutting and raking device is respectively installed at the front end of the swing arm, and the grass cutting and raking device comprises a differential of a planetary gear structure, the planetary frame of the differential is fixedly connected to the swing arm, a grass raking rake is installed on the internal gear of the differential, and a first pruning knife is installed on the driving shaft of the sun gear of the differential; a second pruning knife is installed at the front end of the connecting rod; the differential and the second pruning knife are respectively driven by a power device; and a conveying and collecting device is arranged between the fixed frame and the rear part of the vehicle frame. The present invention can complete the operations of mowing, raking grass clippings and collecting grass clippings at the same time, and the operation efficiency is high.

Description

Technical Field

[0001] The invention relates to gardening equipment, in particular to a planetary multifunctional lawn mower. Background Art

[0002] As people pay more and more attention to the construction of ecological civilization, the phenomenon of planting lawns to green the environment is becoming more and more widespread. In order to maintain the beauty of the lawn, people need to regularly trim the lawn with lawn mowing equipment.

[0003] Traditional manual mowing equipment (such as backpack and push-type) is used to mow large areas of lawn, which is inefficient, has poor lawn mowing flatness, and is prone to fatigue for operators. In the process of mowing, existing lawn mowers often scatter grass clippings on the lawn and cannot be recycled, reducing work efficiency. Summary of the invention

[0004] The present invention aims to solve the above technical problems and provide a planetary multifunctional lawn mower with high operating efficiency.

[0005] The technical solution adopted by the present invention to solve the technical problem is:

[0006] A planetary multifunctional lawn mower comprises a body and pruning shears. The body comprises a frame and a head disposed at the front end of the frame. A fixed frame hinged to the frame is provided at the front end of the frame. The fixed frame comprises a swing frame and a frame body at the front end thereof. A supporting wheel is provided at the lower part of the frame body. A lifting mechanism is provided between the swing frame and the frame. Swing arms hinged to the frame are provided at both ends of the frame body. A swing cylinder is provided between the frame body and the swing arm. The front ends of the two swing arms are hinged to connecting rods respectively. The front ends of the two connecting rods are hinged. A mowing and raking device is installed at the front ends of the swing arms. The mowing and raking device comprises a differential of a planetary gear structure. The planetary frame of the differential is fixedly connected to the swing arm. A grass rake is installed on the internal gear of the differential. A first pruning shear is installed on the driving shaft of the differential sun gear. A mowing disc is installed at the front end of the connecting rod. The differential and the mowing disc are driven by a power device respectively. A conveying and collecting device is provided between the fixed frame and the rear part of the frame.

[0007] Compared with the prior art, the present invention using the above technical solution has the following beneficial effects:

[0008] The width and height of the mowed lawn are adjustable, with good mowing effect and strong practicality. The mowing, raking and collecting of grass clippings can be automatically completed at the same time, with high working efficiency. It is easy to operate, saves time and labor, and has a wide range of applications.

[0009] Further, the optimization scheme of the present invention may be:

[0010] The lifting mechanism includes a frame, a swing frame, and a lifting cylinder. The swing frame is a rectangular welded component. The swing frame includes a support frame and a swing shaft. The two support frames are longitudinally arranged. The rear end of the support frame is provided with a swing shaft. The two ends of the swing shaft are respectively hinged to the longitudinal beam of the frame. Lifting cylinders are respectively provided on both sides of the bottom of the swing frame. The cylinder body of the lifting cylinder is hinged to the lifting cylinder seat. The lifting cylinder seat is fixedly connected to the crossbeam of the frame. The piston rod of the lifting cylinder is hinged to the support frame of the swing frame.

[0011] The frame is a U-shaped welded component, with swing cylinder seats on both sides of the middle of the frame bottom plate, vertical side panels on both sides of the frame, swing arm seats and return spring ears on the outer sides of the side panels, and the swing arm seat is located behind the return spring ear; the rear end of the swing arm is hinged to the swing arm seat, and the inner and outer sides of the rear end of the swing arm are respectively provided with swing arm ears and spring seats, the cylinder body of the swing cylinder is hinged to the swing cylinder seat, the piston rod of the swing cylinder is hinged to the swing arm ear, one end of the return spring is connected to the return spring ear, and the other end of the return spring is connected to the spring seat.

[0012] The driving device is a first hydraulic motor and a second hydraulic motor. The housing of the first hydraulic motor is fixedly connected to the swing arm, and the output shaft of the first hydraulic motor is connected to the driving shaft of the sun gear of the differential. The housing of the second hydraulic motor is fixedly connected to the connecting rod, and its output shaft is connected to the mowing disc. The mowing disc includes a knife shaft and a second pruning knife arranged at the lower end of the knife shaft. The output shaft of the second hydraulic motor is connected to the knife shaft.

[0013] The grass rake comprises a rake frame, a support rod and a grass rake rod. The annular rake frame is fixedly connected to the inner gear, the support rod is radially arranged on the outer circumference of the rake frame, and a plurality of vertical grass rake rods are arranged at the outer end of the support rod.

[0014] The lower end planes of the plurality of grass raking rods are arranged to be inclined relative to the horizontal plane, and the inclination angle is 1.5 degrees to 3 degrees.

[0015] The conveying and collecting device includes a swing arm, a support rod, a buffer device, a suction head, a suction head ear, a straw, a tube bracket and a storage box. The suction head is placed under the frame. The suction head is a flat box structure with an open front bottom. The rear end of the suction head is connected to one end of the straw, and the other end of the straw is connected to the storage box. The storage box is placed at the rear of the frame, and the storage box is provided with a negative pressure device; suction head ears are respectively provided on both sides of the front end of the suction head, one end of the two swing arms is respectively hinged to the suction head ears, and the other ends of the two swing arms are respectively hinged to the suction head seats at the bottom of the frame; both sides of the rear end of the suction head are respectively fixed to one end of the two support rods, and the other ends of the two support rods are hinged to the suction head seats.

[0016] The buffer device includes a buffer spring, a fixing plate, a bolt and a nut. An outwardly extending support rod ear is provided on the outer side of the rear end of the support rod. The buffer spring is installed on the upper part of the support rod ear. A horizontal fixing plate is installed on the upper part of the spring. The fixing plate is fixedly connected to the support frame. A bolt passing through the buffer spring is installed between the fixing plate and the support rod ear. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0018] Figure 2 A schematic diagram of a vehicle body structure according to an embodiment of the present invention;

[0019] Figure 3 It is a schematic diagram of the upper part of the fixing frame structure according to an embodiment of the present invention;

[0020] Figure 4 A schematic diagram of the bottom portion of a fixing frame structure according to an embodiment of the present invention;

[0021] Figure 5 A schematic diagram of the structure of a mechanical arm according to an embodiment of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of a conveying device according to an embodiment of the present invention;

[0023] Figure 7 A schematic diagram of the connection between the suction pipe and the frame of the conveying device according to an embodiment of the present invention;

[0024] Figure 8 It is a schematic structural diagram of a buffer device according to an embodiment of the present invention;

[0025] Fig. 9 A schematic diagram of the structure of a grass mowing and raking device according to an embodiment of the present invention;

[0026] Fig.10 Schematic diagram of the differential structure of an embodiment of the present invention;

[0027] Fig.11 Schematic diagram of the structure of a mowing disc according to an embodiment of the present invention.

[0028] In the figure: vehicle body 1; mechanical arm 2; mowing and raking device 3; mowing disc 4; fixing frame 5; conveying and collecting device 6; supporting wheel 7; vehicle head 11; vehicle frame 12; storage box 13; negative pressure device 131; swing arm 21; swing arm ear 211; spring seat 212; connecting rod 22; swing cylinder 23; cylinder body 231; piston rod 232; return spring 24; first trimming knife 31; raking and raking rake 32; differential 33; sun gear 331; planetary gear 332; internal gear 333; planetary carrier 334; first hydraulic motor 335; driving shaft 336; Rake frame 337; planetary gear shaft 338; second pruning knife 41; second hydraulic motor 42; knife shaft 43; frame body 51; swing cylinder seat 52; swing arm seat 53; return spring ear 54; suction head seat 55; swing frame 56; support wheel seat 57; lifting cylinder 58; lifting cylinder seat 59; swing shaft 561; support frame 562; swing rod 61; support rod 62; support rod ear 621; buffer device 63 buffer spring 631; fixing plate 632; bolt 633; ​​nut 634; suction head 64; suction head ear 65; suction pipe 66; pipe support 67. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0030] See also Figure 1 , Figure 2 The present embodiment is a planetary multifunctional lawn mower, which is composed of a vehicle body 1, a mechanical arm 2, a mowing device 3, a mowing disc 4, a fixing frame 5, a conveying and collecting device 6, and a supporting wheel 7. The vehicle body 1 is composed of a vehicle head 11, a vehicle frame 12, a storage box 13, and wheels 14. The vehicle frame 12 is a welded component, and the wheels 14 are installed at the lower part thereof. The vehicle head 11 is installed at the upper part of the front end of the vehicle frame 12, and the storage box 13 is installed at the upper part of the rear end of the vehicle frame 12. The upper part of the storage box 13 is provided with a negative pressure device 131 connected thereto. The negative pressure device 131 is a fan, and the fan is driven by a motor, and the motor is electrically connected to the control system. The negative pressure device 131 is used to generate negative pressure for the conveying and collecting device 6.

[0031] The front end of the frame 12 is provided with a fixing frame 5 ( Figure 3 , Figure 4As shown in the figure, the fixed frame 5 is composed of a frame body 51 and a swing frame 56, etc. A support wheel 7 is installed below the frame body 51, and the support wheel 7 is installed at the lower part of the inverted U-shaped wheel frame. A vertical screw rod is welded to the upper end of the wheel frame, and a nut is welded to the frame body 51. The screw rod cooperates with the nut, and the height of the support wheel 7 can be adjusted. The support wheel 7 supports the dead weight of the mechanical arm 2, the mowing and raking device 3, and the mowing disc 4, etc., so that they are stably fixed to the front end of the vehicle head 11. The swing frame 56 is a rectangular welded component, and the swing frame 56 is composed of a support frame 562 and a swing shaft 561. The two support frames 562 are arranged longitudinally, and the cross section of the support frames 562 is L-shaped. The rear ends of the two support frames 562 are welded with a horizontal swing shaft 561, and the two ends of the swing shaft 561 are respectively hinged to the longitudinal beams on both sides of the frame 12. A lifting mechanism is provided between the swing frame 56 and the vehicle frame 12, and the lifting mechanism is composed of the vehicle frame 12, the swing frame 56 and the lifting cylinder 58. Lifting cylinders 58 are provided on both sides of the bottom of the swing frame 56 respectively. The cylinder body of the lifting cylinder 58 is hinged to the lifting cylinder seat 59, and the lifting cylinder seat 59 is welded to the crossbeam of the vehicle frame 12. The piston rod of the lifting cylinder 58 is hinged to the support frame 562 through a hinge seat and a pin shaft.

[0032] The frame 51 is horizontally welded to the front end of the swing frame 56. The frame 51 is a U-shaped welded member ( Figure 5 As shown in the figure, swing cylinder seats 52 are welded to both sides of the middle of the bottom plate of the frame 51, and vertical side plates are welded to both ends of the bottom plate of the frame 51. Swing arm seats 53 and reset spring ears 54 are welded to the outer sides of the side plates. The reset spring ears 54 are rectangular frame structures, and the swing arm seats 53 are located at the rear of the reset spring ears 54. A mechanical arm 2 is provided at the front of the frame 51. The mechanical arm 2 is composed of a swing arm 21 and a connecting rod 22. The swing arm 21 is a structural member. The rear ends of the two swing arms 21 are respectively hinged to the two swing arm seats 53 through pins. The front ends of the swing arms 21 are provided with seat holes. The front ends of the two swing arms 21 are respectively hinged to the rear ends of the two connecting rods 22. The front ends of the two connecting rods 22 are respectively provided with ear plates and U-shaped seats, and the ear plates and the U-shaped seats are hinged. A swing arm ear 211 is welded to the inner side of the rear end of the swing arm 21, a spring seat 212 is welded to the outer side of the rear end of the swing arm 21, a cylinder body 231 of the swing oil cylinder 23 is hinged to the swing oil cylinder seat 52, and a piston rod 232 of the swing oil cylinder 23 is hinged to the swing arm ear 211. One end of the return spring 24 is connected to the return spring ear 54, and the other end of the return spring 24 is connected to the spring seat 212. Under the action of the swing oil cylinder 23 and the return spring 24, the swing arm 21 drives the connecting rod 21 to adjust the lateral angle together, so as to adjust the mowing width.

[0033] The seat holes at the front ends of the two swing arms 21 are respectively provided with the mowing and raking devices 3 ( Fig. 9 , Fig.10 , Fig.11As shown in the figure, the mowing and raking device 3 is composed of a first pruning knife 31, a raking rake 32, a differential 33, a first motor 335 and a driving shaft 336. The differential 33 is a planetary gear structure, which is composed of a sun gear 331, a planetary gear 332, an internal gear 333 and a planet carrier 334. The sun gear 331 is meshed with the planetary gear 332, the planetary gear 332 is meshed with the internal gear 333, the planetary gear 332 is connected to the planetary gear shaft 338 by a key, and the planetary gear shaft 338 is connected to the planet carrier 334 by a revolving pair. The planet carrier 334 is connected to the seat hole of the swing arm 21 by bolts, the first motor 335 is placed above the differential 33, and the housing of the first motor 335 is connected to the seat hole of the swing arm 21 by bolts. The sun gear 331 is connected to the vertical driving shaft 336 via a key. The upper end of the driving shaft 336 is connected to the output shaft of the first motor 335. The lower end of the driving shaft 336 is installed with the horizontal first trimming knife 31. The first trimming knife 31 is in a straight line shape.

[0034] The internal gear 333 of the differential 33 is connected to the grass rake 32. The grass rake 32 is composed of a rake frame 337, a support rod 339 and a grass rake rod 340. The rake frame 337 is annular and connected to the internal gear 332. The circular support rod 339 is radially installed on the outer circumference of the rake frame 337. A plurality of vertical grass rake rods 340 are installed at the outer end of the support rod 339. The upper ends of the grass rake rods 340 are fixedly connected to the support rod 339. The differential 33 realizes the high-speed rotation of the first pruning knife 31 and the low-speed rotation of the grass rake 32. The plane formed by the lower ends of the grass rake rods 340 of the plurality of support rods 339 is inclined relative to the horizontal plane, and the inclination angle is 1.5 degrees to 3 degrees, which ensures that the lower end of the grass rake 32 on the side close to the width center line of the vehicle body 1 is higher than the grass clipping plane, and the lower end of the grass rake 32 on the opposite side is lower than the grass clipping plane, so that the grass clippings are raked to the vicinity of the width center line of the vehicle body.

[0035] A vertical blade shaft 43 is installed in the hinge hole at the front end of the two connecting rods 22, and a horizontal second pruning knife 41 is installed at the lower end of the blade shaft 43. The blade shaft 43 is driven by a second hydraulic motor 42. The housing of the second hydraulic motor 42 is connected to the connecting rod 22 by bolts. The output shaft of the second hydraulic motor 42 is connected by the blade shaft 42. The second pruning knife 41 is in a straight line shape, and the length of the second pruning knife 41 is less than that of the first pruning knife. When working, the second hydraulic motor 42 drives the second pruning knife 41 to rotate at a high speed. The second hydraulic motor 42 and the second pruning knife 41 are adjusted in position together with the connecting rod 22, so as to trim the part of the lawn missed by the mowing and raking device 3.

[0036] The conveying and collecting device 6 includes a swing rod 61, a support rod 62, a buffer device 63, a suction head 64, a suction head ear 65, a suction pipe 66, a pipe support 67 and a storage box 13. The suction head 64 is placed below the frame 51. The suction head 64 is a box structure with an open front lower part. The rear end of the suction head 64 is connected to one end of the suction pipe 66, and the other end of the suction pipe 66 is connected to the storage box 13. The storage box 13 is provided with a negative pressure device 131. The suction pipe 66 is fixed to the frame 12 by the pipe support 67. The suction head ears 65 are respectively provided on both sides of the front end of the suction head 64. One end of the swing rod 61 is hinged to the suction head ear 65, and the other end of the swing rod 61 is hinged to the suction head seat 55 at the bottom of the frame 51. The two sides of the rear end of the suction head 64 are respectively welded to one end of the support rod 62, and the other end of the support rod 62 is hinged to the suction head seat 55. The conveying and collecting device 6 can realize automatic height adjustment of the suction head 64, so that the suction head 64 can adapt to uneven grass and realize automatic storage of concentrated grass clippings in the storage box 13. The buffer device 63 is composed of a buffer spring 631, a fixing plate 632, a bolt 633 and a nut 634, etc., an outwardly extending support rod ear 621 is provided on the outer side of the rear end of the support rod 62, a buffer spring 631 is installed on the upper part of the support rod ear 621, a horizontal fixing plate 632 is installed on the upper part of the buffer spring 631, the fixing plate 632 is welded to the support frames 562 on both sides, a bolt 633 passing through the buffer spring is installed between the fixing plate 631 and the support rod ear 621, and a nut 634 is installed on the bolt 633.

[0037] The swing cylinder 23, the lifting cylinder 58, the first hydraulic motor 335 and the second hydraulic motor 42 are connected to the hydraulic valve group through hydraulic pipelines respectively.

[0038] The working principle of this embodiment is as follows: before the lawn mower is used for mowing, the fixed frame 5 is driven by the lifting cylinder 58 to swing the mechanical arm 2 connected thereto to a suitable height. According to the flatness of the lawn, the height of the support wheel 7 is manually adjusted, and the nut 635 of the buffer device 63 is rotated to adjust the height of the suction head 64 from the ground. During the mowing operation, the swing cylinder 23 is operated at any time according to the size of the lawn, and the swing arm 21 and the connecting rod 22 are swung back and forth under the combined action of the return spring 24, driving the positions of the mowing and raking devices 3 and the mowing disc 4 connected thereto to adjust the positions, so as to adjust the mowing width. When the two mowing and raking devices 3 are far apart, the mowing disc 4 completes the mowing of the missed part of the lawn in the middle; the first hydraulic motor 335 of the mowing and raking device 3 drives the differential 33, and the differential 33 drives the mowing rake 32 and the first pruning knife 31 to rotate at different speeds, so that the first pruning knife 31 mows the grass while the mowing rake 32 concentrates the grass clippings to the middle of the vehicle width to form a grass clipping belt. As the vehicle body moves forward, the suction head 64 arranged in the middle collects the grass clippings into the storage box 13 through the suction pipe 66 under the action of the negative pressure device 131. After the mowing operation is completed, the fixed frame 5 is driven by the lifting cylinder 58 to swing, and the mechanical arm 2, the mowing and raking device 3, and the mowing disc 4 connected thereto are folded to the front end of the vehicle body, making it convenient for the mowing vehicle to travel on the road.

[0039] The above description is only a preferred feasible embodiment of the present invention, and does not limit the scope of rights of the present invention. All equivalent structural changes made using the contents of the present invention description and drawings are included in the scope of rights of the present invention.

Claims

1. A planetary multifunctional lawn mower, comprising a body and a trimmer, wherein the body comprises a frame and a head disposed at the front end of the frame, and wherein the The front end of the frame is provided with a fixed frame hinged thereto, the fixed frame includes a swing frame and a frame body at its front end, a supporting wheel is provided at the lower part of the frame body, and a lifting mechanism is provided between the swing frame and the frame; swing arms hinged thereto are provided at both ends of the frame body, a swing cylinder is provided between the frame body and the swing arm, the front ends of the two swing arms are hinged to the connecting rods respectively, and the front ends of the two connecting rods are hinged; a mowing and raking device is installed at the front ends of the swing arms, and the mowing and raking device includes a differential of a planetary gear structure, the differential is composed of a sun gear, a planetary gear, an internal gear and a planetary gear frame, the sun gear is meshed with the planetary gear, the planetary gear is meshed with the internal gear, the planetary gear is connected to the planetary gear shaft by a key, the planetary gear shaft is connected to the planetary gear frame by a rotating pair, the planetary gear frame of the differential is fixedly connected to the swing arm, the internal gear of the differential is installed with a grass rake, and the driving shaft of the differential sun gear is installed with a first pruning knife; a second pruning knife is installed at the front end of the connecting rod; the differential and the second pruning knife are driven by a power device respectively; a conveying and collecting device is provided between the fixed frame and the rear part of the frame; The lifting mechanism includes a frame, a swing frame, and a lifting cylinder. The swing frame is a rectangular welded component. The swing frame includes a support frame and a swing shaft. The two support frames are arranged longitudinally. The rear end of the support frame is provided with a swing shaft. The two ends of the swing shaft are respectively hinged to the longitudinal beam of the frame. Lifting cylinders are respectively provided on both sides of the bottom of the swing frame. The cylinder body of the lifting cylinder is hinged to the lifting cylinder seat. The lifting cylinder seat is fixed to the crossbeam of the frame. The piston rod of the lifting cylinder is hinged to the support frame of the swing frame. The frame is a U-shaped welded component, with swing cylinder seats on both sides of the middle of the frame bottom plate, vertical side plates on both sides of the frame, swing arm seats and return spring ears on the outer sides of the side plates, and the swing arm seat is located at the rear of the return spring ear; the rear end of the swing arm is hinged to the swing arm seat, and the inner and outer sides of the rear end of the swing arm are respectively provided with swing arm ears and spring seats, the cylinder body of the swing cylinder is hinged to the swing cylinder seat, the piston rod of the swing cylinder is hinged to the swing arm ear, one end of the return spring is connected to the return spring ear, and the other end of the return spring is connected to the spring seat; The conveying and collecting device includes a swing rod, a support rod, a buffer device, a suction head, a suction head ear, a straw, a tube bracket and a storage box. The suction head is placed under the frame. The suction head is a flat box structure with an open front bottom. The rear end of the suction head is connected to one end of the straw, and the other end of the straw is connected to the storage box. The storage box is placed at the rear of the frame, and the storage box is provided with a negative pressure device; suction head ears are respectively provided on both sides of the front end of the suction head, one end of the two swing rods is respectively hinged to the suction head ears, and the other ends of the two swing rods are respectively hinged to the suction head seats at the bottom of the frame; both sides of the rear end of the suction head are respectively fixed to one end of the two support rods, and the other ends of the two support rods are hinged to the suction head seats.

2. The planetary multifunctional lawn mower according to claim 1, characterized in that : The driving device is a first hydraulic motor and a second hydraulic motor. The housing of the first hydraulic motor is fixedly connected to the swing arm, and the output shaft of the first hydraulic motor is connected to the driving shaft of the sun gear of the differential; the housing of the second hydraulic motor is fixedly connected to the connecting rod, and its output shaft is connected to the mowing disk. The mowing disk includes a knife shaft and a second pruning knife arranged at the lower end of the knife shaft, and the output shaft of the second hydraulic motor is connected to the knife shaft.

3. The planetary multifunctional lawn mower according to claim 1, characterized in that : The grass rake includes a rake frame, a support rod and a rake rod. The circular rake frame is fixedly connected to the internal gear, the support rod is radially arranged on the outer circumference of the rake frame, and a plurality of vertical rake rods are arranged on the outer end of the support rod.

4. The planetary multifunctional lawn mower according to claim 3, characterized in that : The lower end planes of the multiple raking rods are inclined relative to the horizontal plane, and the inclination angle is 1.5 degrees to 3 degrees.

5. The planetary multifunctional lawn mower according to claim 1, characterized in that The buffer device includes a buffer spring, a fixing plate, a bolt and a nut. An outwardly extending support rod ear is provided on the outer side of the rear end of the support rod. The buffer spring is installed on the upper part of the support rod ear. A horizontal fixing plate is installed on the upper part of the spring. The fixing plate is fixedly connected to the support frame. A bolt passing through the buffer spring is installed between the fixing plate and the support rod ear.

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