CN112005639A

CN112005639A - Combined type mechanical weeding machine

Info

Publication number: CN112005639A
Application number: CN202011021283.XA
Authority: CN
Inventors: 奚小波; 霍中洋; 张洪程; 张瑞宏; 金亦富; 张剑峰
Original assignee: Nanjing Woyang Machinery Technology Co ltd
Current assignee: Nanjing Woyang Machinery Technology Co ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2020-12-01

Abstract

The invention discloses a combined type mechanical weeding machine in the technical field of agricultural machinery, which comprises a rack, wherein a plurality of upright posts are arranged at the front part of the rack, the lower parts of the upright posts are hinged with movable frames, the lower parts of the movable frames are rotatably connected with connecting shafts, a plurality of loosening plates I are arranged on the connecting shafts, one upward ends of the movable frames are connected with return tension springs connected with the rack, connecting rods I which are in one-to-one correspondence with the upright posts and can swing back and forth are connected on the rack behind the upright posts, grass pulling shovels are connected on the connecting rods I, at least one group of grass pulling assemblies I are arranged on the lower sides of the grass pulling shovels, the grass pulling assemblies I comprise a plurality of grass pulling teeth I which are arranged in the same row, connecting rods II which are in one-to-one correspondence with the connecting rods I are connected on the rack behind the connecting rods I, grass pressing shovels are connected below the connecting rods II, at least one; the invention has simple structure, can weed in line and has good weeding effect.

Description

Combined type mechanical weeding machine

Technical Field

The invention belongs to the technical field of agricultural machinery, and particularly relates to a combined type mechanical weeding machine.

Background

Weeding is an important work in field operation, and in the traditional technology, weeding is usually carried out by using a herbicide, so that time and labor are wasted, and the cost is high. The development and use of various weeders become the important tool of field weeding, the prior art, disclose the name "attach the hanging dry land weeder", the publication number is TWM541193U, the publication date is 2017.05.11 patent, the weeder includes weeding group, weeding group is a buffer seat and is set up walking wheel, ploughshare, weeding harrow and grass raking claw from front to back and form, borrow the traction of the power tool and let the ploughshare can dig deeply in the soil, break the soil and dig the grass by the weeding harrow, the rear grass raking claw is collected and dragged the row weed, thus realize the dry land and weed, this kind of weeding technology is suitable for weeding when there is no crop in the field, when there is crop in the field, can't weed.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, provides the combined type mechanical weeding machine, solves the technical problem that weeding cannot be carried out when crops exist in the field in the prior art, has a simple structure, can weed in lines and has a good weeding effect.

The purpose of the invention is realized as follows: a combined type mechanical weeding machine comprises a machine frame, wherein a plurality of vertical rods are arranged at the front part of the machine frame, movable frames are hinged at the lower parts of the vertical rods, connecting shafts are rotatably connected at the lower parts of the movable frames, a plurality of soil loosening plates I are arranged at the periphery of the connecting shafts, a reset tension spring is connected at one end of each movable frame, the upper end of each reset tension spring is connected onto the machine frame, a first connecting rod I which can swing back and forth and corresponds to the position of each vertical rod one by one in the left-right direction is connected onto the machine frame at the rear part of each vertical rod, at least one group of first weeding assemblies are arranged at the lower side of each weeding shovel, each first weeding assembly comprises a plurality of first weeding teeth arranged in the same row, a second connecting rod which corresponds to the first connecting rod in the left-right direction in a one-to-one manner is connected onto the machine frame at the rear part of each connecting rod, a first weed pressing, the first grass pressing component comprises a plurality of first grass pressing teeth arranged in the same row.

In the invention, the frame is connected to the rear part of the walking device, and the forward and backward reciprocating speed of the connecting rod I is higher than the advancing speed of the walking device; the number of the first connecting rods is set according to actual conditions, each grass removing shovel is arranged in a row, the first grass removing teeth comprise a first grass removing part which is fixed on the lower side of the first grass removing shovel and inclines downwards from front to back, the rear side of the first grass removing part is connected with a second grass removing part which extends backwards and upwards in an inclined mode, and the upper side of the second grass removing part is fixed on the lower side of the first grass removing shovel; the grass pressing shovel provides support for the movable frame and limits the depth of the soil loosening plate for loosening soil; in a natural state, the first connecting rod and the second connecting rod are in a vertical state, and each tension spring is in a stretching state; when the weeding machine works, the first soil loosening plate rotates forwards along with the traveling device, the first soil loosening plate firstly loosens the soil for the operation field, then the first connecting rod swings back and forth in a reciprocating mode, the connecting rod drives the weeding shovel to swing back and forth, and the weeding teeth continuously swing back and forth to pull out the grass; the grass pressing shovel moves forwards, grass is pressed to the lower side of the grass pressing shovel, and the first grass pressing tooth further presses the pulled grass into soil for further weeding; in the weeding process, when resistance such as climbing is met, the first soil loosening plate senses terrain change, the first soil loosening plate swings backwards, the movable frame swings backwards, the upper part of the movable frame can incline downwards, the reset tension spring stretches downwards, the first grass pressing shovel swings backwards, after the resistance is crossed, the movable frame resets under the action of the reset tension spring and is attached to the side, facing forwards, of the vertical rod, the grass pressing shovel resets, the positions of the first soil loosening plate and the position of the grass pressing shovel can be changed in a self-adaptive mode according to the terrain change, the weeding effect is further improved, and the service life of each component is prolonged; the weeding machine is simple in structure, soil is loosened between a pair of rows through the soil loosening plate, the weeding shovel continuously reciprocates back and forth, the first weeding part and the second weeding part are combined, grass is continuously pressed and then is separated from soil with loosened soil, weeding is easier, the weeding effect is improved, the weeding shovel and the weeding teeth are combined, and the pulled grass is pressed into the soil, so that the weeding effect is further improved; can be applied to the weeding work among rows, in particular to the weeding work in paddy fields.

In order to further avoid leaking the weeding, the downside of weeding shovel still arranges at least a set of subassembly two of weeding, subassembly two of weeding includes a plurality of teeth two of weeding that set up with arranging, the setting of staggering in the left and right directions of tooth one of weeding and tooth two of weeding.

In order to further realize the height adjustment of the weeding shovel, a first intermediate rod is connected in the first connecting rod, a plurality of first adjusting holes are distributed in the first intermediate rod in the height direction, and a first connecting hole which can be coaxial with the first adjusting holes is formed in the first connecting rod.

In order to further improve the weeding effect, the upper portion of connecting rod two articulates in the frame, and connecting rod two can swing backward, and the sub-unit connection of connecting rod two has intermediate lever two, and intermediate lever two is connected with lower extension spring two towards the one end in back, the one end that two backward just downward slopping of lower extension spring is connected in the upper end of pressing the grass shovel, and the lower part of pressing the grass shovel in two the place ahead of lower extension spring is articulated with intermediate lever two.

In order to further realize the reset of the first connecting rod in the front-back direction, a plurality of upper tension springs in one-to-one correspondence with the first connecting rod are connected to the rack, and one end, extending backwards, of each upper tension spring is connected with the upper portion of the first connecting rod.

In order to further realize the back-and-forth reciprocating motion of the weeding shovel, a transmission shaft is rotatably connected to the rack below the upper tension spring, a plurality of eccentric wheels are connected to the transmission shaft, the upper part of one forward end of the connecting rod is in contact with the outer edge of the eccentric wheel, and the rack is hinged to the connecting rod below the eccentric wheels.

In order to further realize the rotation of the transmission shaft, a transmission case is fixedly connected to the rack, and the transmission shaft is connected to the transmission case; wherein, be connected with the input shaft on the transmission case, running gear in the frame the place ahead drives the input shaft and rotates.

In order to further improve the rotating reliability of the transmission shaft, a plurality of mounting seats are connected to the rack, and the transmission shaft is rotatably connected to the mounting seats.

In order to further reduce the sliding resistance, the forward end of the weeding shovel is tilted upwards, and the backward end of the weeding shovel is tilted upwards; in this design, the front portion of the grass pulling shovel is tilted forward, and during weeding, the grass pulling shovel presses grass into the lower side of the grass pulling shovel, so that the grass pulling effect is improved.

In order to further improve the effect of weeding, the shovel of weeding includes the horizontal part, the rear side of horizontal part is connected with the connecting portion of perk upwards, and the front side of horizontal part is connected with one side kickdown kickup and outside convex grass pressing portion, the inclined part that inclines upwards is connected to the one side forward of grass pressing portion.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a first perspective view of the present invention.

Fig. 4 is a second perspective view of the present invention.

Fig. 5 is a partially enlarged view of B in fig. 4.

Fig. 6 is a partially enlarged view at C in fig. 4.

Fig. 7 is a three-dimensional structure diagram of the present invention.

The device comprises a 1 furrow clearing device, a 2 scarification plate I, a 3 scarification plate II, a 4 movable frame, a 5 rack, a 6 tooth groove II, a 7 tooth groove I, a 8 grass pressing component II, a 801 grass pressing tooth II, a 9 grass pressing component I, a 901 grass pressing tooth I, a 10 grass pressing shovel, a 11 grass pulling component II, a 1101 grass pulling tooth II, a 12 grass pulling component I, a 1201 grass pulling tooth I, a 13 grass pulling shovel, a 1301 horizontal part, a 1302 connecting part, a 1303 inclined part, a 1304 grass pressing part, a 14 middle rod I, a 15 lower pulling spring I, a 16 middle rod II, a 17 lower pulling spring II, an 18 adjusting hole II, a 19 connecting hole II, a 20 connecting rod II, a 21 limiting plate, a 22 rear tension spring, a 23 sliding groove, a 24 connecting rod I, a 25 eccentric wheel, a 26 upper tension spring, a 27 vertical rod, a 28 connecting shaft, a 29 connecting hole I, a 30 adjusting hole I, a 31 transmission case, a 32 input shaft, a 33 transmission shaft, 34 mounting seat, a 35 reset tension spring, a 36 seat, a.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1 to 6, a combined type mechanical weeding machine comprises a frame 5, a plurality of upright posts 27 are arranged at the front of the frame 5, movable frames 4 are hinged at the lower parts of the upright posts 27, a connecting shaft 28 is rotatably connected at the lower parts of the movable frames 4, a plurality of first soil loosening plates 2 and second soil loosening plates 3 are arranged at the periphery of the connecting shaft 28, a second soil loosening plate 3 is arranged on the connecting shaft 28 between two adjacent first soil loosening plates 2, a plurality of first tooth sockets 7 are arranged at the outward ends of the first soil loosening plates 2, a plurality of second tooth sockets 6 are arranged at the outward ends of the second soil loosening plates 3, the first tooth sockets 7 and the second tooth sockets 6 are staggered in the left-right direction, a reset tension spring is connected at the upward end of the movable frame 4, the upward end of the reset tension spring is connected to the frame 5, the backward end of the upper part of the movable frame 4 can be abutted against the forward side of the upright posts 27, a first connecting rod 24 capable of swinging back and forth in, the connecting rod I24 is provided with a sliding groove 23, a plurality of hinge seats 36 are distributed on the rack 5, the hinge seats 36 are connected with the connecting rod I24 through a pin shaft, the connecting rod I24 can rotate relative to the pin shaft in the front-back direction, the connecting rod I24 moves up and down relative to the hinge seats 36 in the height direction, the connecting rod I24 is connected with the grass-removing shovel 13, the forward end of the grass-removing shovel 13 is tilted upwards, and the backward end of the grass-removing shovel 13 is tilted upwards; the weeding shovel 13 comprises a horizontal part 1301, a connecting part 1302 which is tilted upwards is connected to the rear side of the horizontal part 1301, a grass pressing part 1304 which is bent downwards and protrudes outwards is connected to the front side of the horizontal part 1301, an inclined part 1303 which inclines upwards is connected to the forward side of the grass pressing part 1304, at least one group of weeding assemblies I12 are distributed on the lower side of the weeding shovel 13, in the embodiment, the weeding assemblies I12 are provided with two groups, each weeding assembly I12 comprises a plurality of weeding teeth I1201 which are arranged in the same row, a middle rod I14 is connected in a connecting rod I24, a plurality of adjusting holes I30 are distributed in the middle rod I14 in the height direction, and a connecting hole I29 which can be coaxial with the adjusting holes I30 is formed in the connecting rod I24; one rearward end of the lower part of the first connecting rod 24 is connected with a first lower tension spring 15, one rearward and downward inclined end of the first lower tension spring 15 is connected with one upward end of the weeding shovel 13, the weeding shovel 13 can rotate relative to the first connecting rod 24, and the lower part of the first intermediate rod 14 is hinged with the weeding shovel 13; a second connecting rod 20 which is in one-to-one correspondence with the first connecting rod 24 in the left-right direction is connected to the rack 5 behind the first connecting rod 24, the upper portion of the second connecting rod 20 is hinged to the rack 5, the second connecting rod 20 can swing backwards, a limiting plate 21 is arranged on the forward side of the upper portion of the second connecting rod 20, the limiting plate 21 is in contact with the downward side of the rack 5, a plurality of second connecting lugs are distributed in the length direction of the rack 5, the second connecting lugs are arranged on the rack 5 at the hinged position of the rack 5 and the first connecting rod 24, rear tension springs 22 are connected to the second connecting lugs, one ends, extending backwards, of the rear tension springs 22 are connected with the forward side of the second connecting rod 20, a second middle rod 16 is detachably connected to the lower portion of the second connecting rod 20, a plurality of second adjusting holes 18 are distributed in the height direction of the second middle rod 16, a second connecting, the lower portion of the middle rod II 16 is hinged with a grass pressing shovel 10, at least one group of grass pressing assemblies I9 and two groups of grass pressing assemblies II 8 are arranged on the lower side of the grass pressing shovel 10, in the front-back direction, the grass pressing assemblies I9 and the two groups of grass pressing assemblies II 8 are arranged at intervals, in the embodiment, the grass pressing assemblies I9 are provided with two groups, the grass pressing assemblies II 8 are provided with one group, one group of grass pressing assemblies II 8 are arranged between the two groups of grass pressing assemblies I9, each grass pressing assembly I9 comprises a plurality of grass pressing teeth I901 which are arranged in the same row, each grass pressing assembly II 8 comprises a plurality of grass pressing teeth II 801 which are arranged in the same row, each grass pressing tooth II 801 and each grass pressing tooth I901 are arranged in a staggered mode, one rearward end of the middle rod II 16 is connected with a lower tension spring II 17, one end, extending backwards and downwards, is connected to the upper end of the grass pressing shovel 10, and the front of the.

In order to further avoid missed weeding, at least one group of weeding assemblies II 11 are further arranged on the lower side of the weeding shovel 13, each weeding assembly II 11 comprises a plurality of weeding teeth II 1101 arranged in the same row, and the weeding teeth I1201 and the weeding teeth II 1101 are arranged in a staggered mode in the left-right direction.

In order to further realize the reciprocating motion of the connecting rod I24 in the front-back direction, a first connecting lug 38 which corresponds to the connecting rod I24 one by one is connected on the frame 5 in front of the connecting rod I24, an upper tension spring 26 is connected on the first connecting lug 38, one end of the upper tension spring 26 which extends backwards is connected with the upper part of the connecting rod I24, a transmission shaft 33 is rotatably connected on the frame 5 below the upper tension spring 26, a plurality of eccentric wheels 25 which correspond to the connecting rod I24 one by one are connected on the transmission shaft 33, the upper part of one end of the connecting rod I24 which faces forwards is contacted with the outer edge of the eccentric wheel 25 which faces backwards, and; the structure for realizing the rotation of the transmission shaft 33 is that the frame 5 is fixedly connected with a transmission case 31, and the transmission shaft 33 is connected with the transmission case 31; the frame 5 is connected with a plurality of mounting seats 34, and the transmission shaft 33 is rotatably connected with the mounting seats 34.

In the invention, the front side of a frame 5 is connected with a walking device suitable for walking in a paddy field, an input shaft 32 is connected on a transmission case 31, and the walking device in front of the frame 5 drives the input shaft 32 to rotate; the advancing direction of the frame 5 is taken as the front, and the direction opposite to the advancing direction is taken as the back; a plurality of height-adjustable ditch arranging devices 1 can be detachably connected to the machine frame 5 in front of the upright rods 27, the number of the ditch arranging devices 1 is set according to actual needs, and two ditch arranging devices 1 are arranged in the embodiment; the traveling speed of the speed walking device with the first connecting rod 24 swinging back and forth in a reciprocating manner is that in a natural state, the backward end of the upper part of the movable frame 4 is attached to the forward side of the upright rod 27, the horizontal part 1301 of the weeding shovel 13 is in a horizontal state, the second connecting rod 20 is in a vertical state, and all the tension springs are in a stretching state; the number of the first connecting rods 24 is set according to actual conditions, the number of the first connecting rods 24 is the same as that of the second connecting rods 20, each grass-removing shovel 13 and each grass-pressing shovel 10 are arranged in a row, the first grass-removing teeth 1201 and the second grass-removing teeth 1101, the first grass-pressing teeth 901 and the second grass-pressing teeth 801 are the same or similar in structure, angles of the first grass-removing parts and the second grass-removing parts can be set according to actual requirements, the first grass-removing teeth 1201 comprise the first grass-removing parts which are fixed on the lower sides of the grass-removing shovels 13 and incline downwards from front to back, the rear sides of the first grass-removing parts are connected with the second grass-removing parts which incline backwards and upwards, and the upper sides of the second grass-removing parts are fixed on; the depth of the first intermediate rod 14 and the second intermediate rod 16 inserted into the first connecting rod 24 and the second connecting rod 20 is adjusted according to actual needs; the grass pressing shovel 10 provides support for the movable frame 4 and limits the depth of the soil loosened by the soil loosening plate 2; during operation, the first soil loosening plate 2 rotates forwards along with the traveling device, the first soil loosening plate 2 and the second soil loosening plate 3 loosen the soil in an operation field, the first tooth socket 7 and the second tooth socket 6 are arranged in a staggered mode to avoid soil leakage, meanwhile, the first tooth socket 7 or the second tooth socket 6 are arranged to realize block soil loosening and reduce soil loosening resistance, then, the inclined portion 1303 presses grass into the lower portion of the inclined portion, the grass pressing portion 1304 further presses the grass into the first grass pulling tooth 1201, the transmission case 31 acts, the transmission shaft 33 rotates, the transmission shaft 33 drives the eccentric wheel 25 to rotate, the eccentric wheel 25 drives the connecting rod one 24 to swing back and forth, the connecting rod one 24 drives the grass pulling shovel 13 to swing back and forth, the first grass pulling tooth 1201 and the second grass pulling tooth 1101 to pull the grass continuously back and forth, in the specific grass pulling process, the first grass pulling portion moves forwards, the first grass pulling portion presses the grass while loosening the grass, the second grass pulling portion moves backwards, the second soil portion presses the grass while further separating the grass from the grass, the weeding is realized, the weeding effect is good, the weeding teeth II 1101 weed on the basis of the weeding teeth I1201, the weeding leakage is avoided, and the weeding effect is further improved; the grass pressing shovel 10 moves forwards, grass is pressed to the lower side of the grass pressing shovel 10, the first grass pressing tooth 901 further presses the pulled grass into soil, the second grass pressing tooth 801 presses the grass which is not pressed by the first grass pressing tooth 901 into the soil, grass leakage is avoided, the weeding effect is further improved, when large resistance such as climbing is met, the first soil loosening plate 2 and the second soil loosening plate 3 sense terrain change to drive the movable frame 4 to swing backwards, the grass pressing shovel 10 also swings backwards, the weeding shovel 13 senses the terrain change to push the middle rod to move upwards, the first connecting rod 24 moves upwards through the sliding groove 23, when the resistance is not met or the resistance is small, the movable frame 4 resets under the action of the reset tension spring, the second connecting rod 20 resets under the action of the reset tension spring 22, the positions of the first soil loosening plate 2 and the grass pressing shovel 10 can be changed in a self-adaptive mode according to the terrain change, the weeding effect is further improved, and the service lives of all parts are prolonged; in the weeding process, when an obstacle is encountered, the inclined part 1303 is firstly contacted with the obstacle, the obstacle pushes against the inclined part 1303, the weeding shovel 13 rotates backwards and upwards to enable the weeding teeth to leave the ground, and when the weeding shovel passes by the obstacle, the weeding shovel 13 is reset under the action of the first lower tension spring 15, so that the direct impact between the weeding shovel 13 and the obstacle is avoided, the weeding teeth are protected, and the service life of the weeding shovel is prolonged; the grass-pulling shovel 13 is simple in structure, the continuous reciprocating back-and-forth movement of the grass-pulling shovel 13 is realized through the combined arrangement of the eccentric wheel 25 and the upper tension spring 26, the structure is ingenious, the combination of the first grass-pulling part and the second grass-pulling part and the back-and-forth reciprocating movement of the first grass-pulling part and the second grass-pulling part continuously press grass and then separate the grass from soil, and the grass-pulling effect is good; can be applied to the weeding work among rows, in particular to the weeding work in paddy fields.

The invention is not limited to the above embodiment, the first weeding component 12 and the first grass pressing component 9 can also be provided with one group, three groups, four groups and the like, and the number of the first weeding component 12, the second weeding component 11, the first grass pressing component 9 and the second grass pressing component 8 can be set according to actual needs; based on the technical solutions disclosed in the present invention, those skilled in the art can make various alterations and modifications to some technical features without creative efforts based on the disclosed technical contents, and the alterations and modifications are all within the protection scope of the present invention.

Claims

1. The utility model provides a combined type mechanical weeding machine, includes the frame, its characterized in that: the front part of frame has arranged a plurality of pole settings, the lower part of pole setting articulates there is the adjustable shelf, the lower part of adjustable shelf rotationally is connected with the connecting axle, and a plurality of scarification boards one are arranged to the periphery of connecting axle, and the adjustable shelf one end up is connected with the extension spring that resets, and the upper end of extension spring that resets is connected in the frame, is connected with in the frame at pole setting rear and controls the connecting rod one that can swing back and forth with the pole setting position one-to-one in the direction, be connected with the grass pulling shovel on the connecting rod one, the downside of grass pulling shovel has arranged at least a set of grass pulling subassembly one, the grass pulling subassembly one includes a plurality of grass pulling teeth one that arrange the same, is connected with in the frame at connecting rod one rear and controls the direction with connecting rod one and positions the connecting rod two that correspond one-to one, and the below of connecting rod two is connected with, the first grass pressing component comprises a plurality of first grass pressing teeth arranged in the same row.

2. A combined mechanical weeding machine according to claim 1, wherein: the downside of weeding shovel still arranges at least a set of subassembly two of weeding, subassembly two of weeding includes a plurality of teeth two of weeding that set up with arranging, the setting of staggering in the left and right directions of tooth one of weeding and tooth two of weeding.

3. A combined mechanical weeding machine according to claim 1, wherein: the first connecting rod is internally connected with a first intermediate rod, a plurality of first adjusting holes are distributed in the first intermediate rod in the height direction, and a first connecting hole which can be coaxial with the first adjusting holes is formed in the first connecting rod.

4. A combined mechanical weeding machine according to claim 1, wherein: the upper portion of the second connecting rod is hinged to the rack, the second connecting rod can swing backwards, the lower portion of the second connecting rod is connected with the second intermediate rod, one end, facing backwards, of the second intermediate rod is connected with the second lower tension spring, one end, extending backwards and downwards, of the second lower tension spring is connected to the upper end of the grass pressing shovel, and the grass pressing shovel in front of the second lower tension spring is hinged to the lower portion of the second intermediate rod.

5. A combined mechanical weeding machine according to claim 1, wherein: the rack is connected with a plurality of upper tension springs in one-to-one correspondence with the first connecting rods, and one ends of the upper tension springs extending backwards are connected with the upper portions of the first connecting rods.

6. A combined mechanical weeding machine according to claim 5, wherein: the upper tension spring is arranged on the upper tension spring, the rack below the upper tension spring is rotatably connected with a transmission shaft, the transmission shaft is connected with a plurality of eccentric wheels, the upper part of one forward end of the connecting rod is contacted with the outer edge of the eccentric wheel, which faces backwards, and the rack is hinged with the connecting rod below the eccentric wheel.

7. A combined mechanical weeding machine according to claim 6, wherein: the rack is fixedly connected with a transmission case, and the transmission shaft is connected to the transmission case.

8. A combined mechanical weeding machine according to claim 6, wherein: the rack is connected with a plurality of mounting seats, and the transmission shaft is rotatably connected to the mounting seats.

9. A combined mechanical weeding machine according to any one of claims 1 to 8, wherein: the forward end of the weeding shovel is tilted upwards, and the backward end of the weeding shovel is tilted upwards.

10. A combined mechanical weeding machine according to claim 9, wherein: the weeding shovel comprises a horizontal portion, the rear side of the horizontal portion is connected with a connecting portion which is tilted upwards, the front side of the horizontal portion is connected with a grass pressing portion which is bent upwards and protrudes outwards and faces downwards, and the grass pressing portion is connected with an inclined portion which is inclined upwards and inclined towards the front side.