CN115067003B

CN115067003B - Crop pest control device

Info

Publication number: CN115067003B
Application number: CN202210779676.XA
Authority: CN
Inventors: 赵丽娜; 崔娟; 孙健智
Original assignee: Jilin Agricultural Science and Technology College
Current assignee: Jilin Agricultural Science and Technology College
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2023-11-14
Anticipated expiration: 2042-06-30
Also published as: CN115067003A

Abstract

The application discloses a crop pest control device, which comprises a hand lever and a U-shaped bracket which is arranged at the bottom end of the hand lever and is provided with a forward opening, wherein a main shaft is rotatably arranged at the front end of the U-shaped bracket, a truckle is arranged on the main shaft, the main shaft is driven to rotate when the hand lever is pushed to move, and a rectangular blade is sleeved at the rear end of the U-shaped bracket.

Description

Crop pest control device

Technical Field

The application relates to the technical field of agricultural tillage equipment, in particular to a crop pest control device.

Background

Crop diseases and insect pests are one of main agricultural disasters in China, and have the characteristics of multiple types, large influence and frequent outbreaks of disasters, and the occurrence range and the severity of the crop diseases and insect pests often cause great losses to national economy of China, particularly agricultural production.

In rural areas, two main means for preventing diseases and insect pests are adopted, namely pesticide spraying and killing the diseases and insect pests by using the pesticide; secondly, manual weeding is performed, as the normal growth of crops is mostly affected by weeds in the field, and diseases and insect pests on the weeds spread on the crops and in soil to damage, the weeds in the field are cleaned timely, and the weeding device is also an indispensable link for preventing the diseases and insect pests.

At present, when farmers clear up field weeds, especially for dry crops such as cotton, corn and the like planted at intervals, the hoe is mainly used for manually weeding in the field, nutrient supply of the weeds is cut off by turning up the roots of the weeds, and the weeds are killed rapidly by sunlight insolation, so that the field weeds can be effectively removed and diseases and insect pests can be effectively prevented, the whole manual weeding process is time-consuming and labor-consuming, the labor intensity of the farmers is high, the weeding efficiency is low, and even if the farmers do not work for good harvest, the weeding efficiency is low, the effective prevention and treatment of the diseases and insect pests are still unavoidable, and further the effective prevention and treatment of the diseases and insect pests are seriously influenced;

although automatic weeding equipment exists in the current market, the size is relatively large, the automatic weeding equipment is not suitable for fields in which crops grow normally, the equipment purchasing cost and the use cost are relatively high, meanwhile, the equipment is relatively heavy due to the influence of a power unit, the automatic weeding equipment is not suitable for non-intensive labor force personnel, and particularly for families in which the intensive labor force is required to go out after the farming is finished, the manual weeding mode of the hoe is the most common choice, so that the crop pest control device is provided.

Disclosure of Invention

The application aims to provide a crop pest control device for solving the problems in the background technology.

In order to achieve the above purpose, the present application provides the following technical solutions: the crop pest control device comprises a hand bar and a U-shaped bracket which is arranged at the bottom end of the hand bar and is provided with a forward opening, wherein a main shaft is rotatably arranged at the front end of the U-shaped bracket, casters are arranged on the main shaft and drive the main shaft to rotate when pushing the hand bar to move, and a rectangular blade is sleeved at the rear end of the U-shaped bracket;

a through groove perpendicular to the travelling direction of the caster wheel is formed in the rear end position of the U-shaped bracket, a bearing shaft is penetrated in the through groove in a sliding manner, two ends of the bearing shaft are respectively connected with two sides of the rectangular blade, a linkage part is arranged between the main shaft and the rectangular blade, and the rectangular blade is driven to repeatedly transversely move by the linkage part when the main shaft rotates;

and a loosening part is arranged at the tail part of the rectangular blade, and when the rectangular blade repeatedly moves transversely, the loosening part is utilized to loosen the soil scooped up by the rectangular blade.

Preferably, the edge position of the rectangular blade is serrated.

Preferably, the linkage component comprises a vertical shaft arranged on the U-shaped bracket, a transverse rod is arranged on the vertical shaft, one end of the transverse rod extends to the upper side of the rectangular blade, a through transverse through hole I is formed in the position, above the rectangular blade, of the transverse rod, a stand column is arranged at the top of the rectangular blade, and the stand column passes through the through hole I and is in sliding connection with the inner wall of the stand column;

the rectangular knife blade is characterized by further comprising a pushing mechanism arranged on the U-shaped support, wherein the pushing mechanism is connected with the main shaft and matched with one end of the transverse rod, which is far away from the transverse through hole I, and the transverse rod is pushed to repeatedly deflect in the left direction and the right direction when the main shaft rotates so that the rectangular knife blade repeatedly moves transversely.

Preferably, the pushing mechanism comprises a driving sprocket arranged on the main shaft, an extension shaft parallel to the main shaft is rotatably arranged on the U-shaped bracket, a driven sprocket is arranged on the extension shaft, and a transmission chain is arranged outside the driving sprocket and the driven sprocket so as to drive the extension shaft to continuously rotate when the caster runs;

and still install the backup pad on U type support run through in the backup pad and be provided with the pivot, extend the axle tip and install drive bevel gear the driven bevel gear with the drive bevel gear interlock is installed to the pivot bottom, in order to order about pivot synchronous rotation when the main shaft is rotatory, and install the camshaft on the pivot top the jackshaft is installed to the tip of camshaft, and the one end that the transverse rod kept away from transverse through hole one has seted up transverse through hole two that run through, the jackshaft runs through transverse through hole two, and with its inner wall sliding connection, in order to when the pivot is rotatory, utilizes the jacking shaft is come the rotatory left and right deflection of jacking transverse rod.

Preferably, the end part of the main shaft is sleeved with a first ratchet mechanism, the driving sprocket is sleeved with a second ratchet mechanism, the U-shaped support penetrates through the first ratchet mechanism, the outer ring of the second ratchet mechanism is connected with the U-shaped support, and the extension shaft penetrates through the inner ring of the second ratchet mechanism and is connected with the inner ring of the second ratchet mechanism, so that the extension shaft rotates unidirectionally and does not drive the rectangular blade and the loose part to act when the caster is pulled by the hand rod to move.

Preferably, the loosening component comprises bearing seats respectively installed at two sides of the tail of the rectangular blade, an outer sleeve rod is arranged between the two bearing seats, a plurality of first extending plates are installed on the outer sleeve rod at equal intervals, an inner rod is arranged in the outer sleeve rod in a penetrating mode, the inner rod is connected with the outer sleeve rod in a rotating mode, installation through holes are formed in positions, located between the first adjacent extending plates, of the outer sleeve rod, extension plates II are installed in positions, located in the installation through holes, of the inner rod, and the second extending plates extend to the outer side of the outer sleeve rod from the installation through holes and are flush with the first extending plates;

the outer sleeve rod is driven to drive the extension plate to deflect when the rectangular blade moves leftwards, and the inner rod is driven to drive the extension plate to deflect when the rectangular blade moves rightwards.

Preferably, the first deflection connecting piece and the second deflection connecting piece comprise a telescopic rod and a guide rail rod, the telescopic rod is correspondingly arranged on the corresponding outer sleeve rod and inner rod, the guide rail rod is correspondingly arranged at the side edge position of the U-shaped bracket and is correspondingly arranged on the first deflection connecting piece and the second deflection connecting piece, and a penetrating guide rail hole is formed in the end part of the telescopic rod;

the guide rail rod comprises a straight rod section and an arc rod section, the straight rod section is arranged on the U-shaped support, the arc rod section is arranged at the end part of the straight rod section, and the telescopic rods of the first deflection connecting piece and the second deflection connecting piece are respectively sleeved on the corresponding straight rod sections through guide rail holes.

Preferably, a connecting rod which is inclined upwards and backwards is arranged at the top of the U-shaped bracket, and a screw hole I is formed in the top end of the connecting rod;

the connecting screw rod is installed to the hand lever bottom, just hand lever utilizes connecting screw rod and screw one to come with the connecting rod releasable connection.

Preferably, the hand lever is of a T-shaped lever structure, and a rubber jacket is sleeved on a transverse section at the tail part of the hand lever.

Preferably, a second screw hole is formed in the tail end of the U-shaped support, and after the hand rod is installed at the second screw hole through a connecting screw rod, the U-shaped support and the casters can be pulled to move, and the rectangular blade and the loosening component are overhead.

Compared with the prior art, the application has the beneficial effects that:

compared with the prior art, when the weeding machine is used for manually weeding crops, the hand bars are held, the rectangular blades are placed in soil below weeds, and then the casters are pushed to drive the U-shaped brackets to move, so that the rectangular blades can be used for turning up the weeds and the soil at the root parts of the weeds to achieve the purpose of quick weeding, the weeding burden of farmers can be effectively reduced, the weeding efficiency can be effectively improved, and the effective prevention of diseases and insect pests is ensured;

in addition, in the pushing weeding process, the rectangular cutter head can continuously transversely move left and right and is matched with the serrated cutter edge to saw and cut forward, so that the advancing resistance of the rectangular cutter blade in soil is effectively reduced, the manual pushing resistance is further reduced, meanwhile, the loosening part at the tail part is utilized, the loosening part can also be used for effectively loosening the turned-up suddenly, the weed roots can be effectively separated from the soil to accelerate death of the weed roots, and the soil can be effectively loosened to ensure the air permeability of the soil, so that the soil can be grown in a beneficial manner.

Drawings

FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present application;

FIG. 2 is a schematic view of the enlarged partial structure of FIG. 1 according to the present application;

FIG. 3 is an enlarged schematic view of the area A of FIG. 2 according to the present application;

FIG. 4 is a schematic view of the structure of FIG. 1 in another orientation in accordance with the present application;

FIG. 5 is an enlarged schematic view of the structure of the area B in FIG. 4 according to the present application;

FIG. 6 is a schematic view of the alternate orientation of FIG. 4 in accordance with the present application;

FIG. 7 is an enlarged schematic view of the structure of the area C in FIG. 6 according to the present application;

FIG. 8 is a schematic view of the alternate orientation of FIG. 6 in accordance with the present application;

FIG. 9 is an enlarged schematic view of the structure of the area D in FIG. 8 according to the present application;

FIG. 10 is a schematic view of a portion of the loose part construction of the present application;

FIG. 11 is a schematic overall structure of embodiment 2 of the present application;

fig. 12 is a schematic view of the walking beam of the present application in a towed state.

In the figure: 1. a walking bar; 11. a U-shaped bracket; 12. a main shaft; 13. casters; 14. a rectangular blade; 15. a through groove; 16. A bearing shaft; 2. a linking member; 21. a vertical shaft; 22. a transverse rod; 23. a first transverse through hole is formed; 24. a column; 25. a top-moving mechanism; 251. a drive sprocket; 252. an extension shaft; 253. a driven sprocket; 254. a drive chain; 255. a support plate; 256. a rotating shaft; 257. a drive bevel gear; 258. a driven bevel gear; 259. a cam shaft; 260. a top shaft; 261. a transverse through hole II; 27. a ratchet mechanism I; 28. a ratchet mechanism II; 3. loosening the component; 31. a bearing seat; 32. an outer sleeve rod; 33. an extension board I; 34. an inner rod; 35. mounting through holes; 36. an extension plate II; 37. deflecting the first connecting piece; 38. a second deflection connecting piece; 39. a telescopic rod; 310. a guide rail rod; 311. a guide rail hole; 312. a straight rod section; 313. an arc rod section; 4. A connecting rod; 41. a screw hole I; 42. a connecting screw; 43. a rubber jacket; 44. and a screw hole II.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Referring to fig. 1-10, the present application provides a technical solution: the utility model provides a crop pest control device, including hand lever 1 and install in hand lever 1 bottom and opening forward U type support 11, rotate at the front end of U type support 11 and install main shaft 12, be provided with truckle 13 on main shaft 12, drive main shaft 12 rotatory when promoting hand lever 1 and remove, and the rear end cover at U type support 11 is equipped with rectangular blade 14, when U type support 11 utilizes truckle 13 and hand lever 1 propelling movement, can drive rectangular blade 14 quick turn up weeds with soil together even root, realize quick weeding;

further, a through groove 15 perpendicular to the travelling direction of the caster wheel 13 is provided at the rear end of the U-shaped bracket 11, a bearing shaft 16 is slidably inserted into the through groove 15, both ends of the bearing shaft 16 are respectively connected to both sides of the rectangular blade 14, and a linkage member 2 is provided between the main shaft 12 and the rectangular blade 14.

As a technical means for the characteristic interlocking member 2, the interlocking member 2 comprises a vertical shaft 21 mounted on a U-shaped bracket 11, a transverse rod 22 is mounted on the vertical shaft 21, one end of the transverse rod 22 extends to the upper side of the rectangular blade 14, a through transverse through hole 23 is formed in the position of the transverse rod 22 above the rectangular blade 14, a stand column 24 is mounted on the top of the rectangular blade 14, and the stand column 24 passes through the through hole 23 and is in sliding connection with the inner wall of the rectangular blade 14;

the linkage part 2 also comprises a jacking mechanism 25 arranged on the U-shaped bracket 11, the jacking mechanism 25 comprises a driving sprocket 251 arranged on the main shaft 12, an extension shaft 252 parallel to the main shaft 12 is rotatably arranged on the U-shaped bracket 11, a driven sprocket 253 is arranged on the extension shaft 252, and a transmission chain 254 is arranged outside the driving sprocket 251 and the driven sprocket 253 so as to drive the extension shaft 252 to continuously rotate when the caster 13 runs;

the U-shaped bracket 11 is further provided with a supporting plate 255, a rotating shaft 256 is arranged on the supporting plate 255 in a penetrating manner, a driving bevel gear 257 is arranged at the end part of the extending shaft 252, a driven bevel gear 258 meshed with the driving bevel gear 257 is arranged at the bottom end of the rotating shaft 256 so as to drive the rotating shaft 256 to rotate synchronously when the main shaft 12 rotates, a cam shaft 259 is arranged at the top end of the rotating shaft 256, a top shaft 260 is arranged at the end part of the cam shaft 259, a penetrating traversing through hole 261 is formed at one end of the traversing rod 22 far away from the traversing through hole 23, the top shaft 260 penetrates through the traversing through hole 261 and is in sliding connection with the inner wall of the traversing through hole 261, so that the top shaft 260 is utilized to push the traversing rod 22 to deflect repeatedly left and right when the rotating shaft 256 rotates, and the end of the traversing rod 22 is utilized to design of the upright post 24 so as to drive the rectangular blade 14 to move repeatedly and transversely, and the cutting edge position of the rectangular blade 14 is saw-toothed so as to achieve the sawing effect, and the rectangular blade 14 can travel in a labor-saving manner in soil so as to effectively reduce the soil resistance and improve the efficiency.

In addition, the end part of the main shaft 12 is sleeved with a first ratchet mechanism 27, the driving sprocket 251 is sleeved and installed on the outer side of the first ratchet mechanism 27, the U-shaped bracket 11 is penetrated and provided with a second ratchet mechanism 28, the outer ring of the second ratchet mechanism 28 is connected with the U-shaped bracket 11, the extension shaft 252 penetrates and is connected with the inner ring of the second ratchet mechanism 28, so that the extension shaft 252 rotates unidirectionally, the rectangular blade 14 and the loose part 3 are not driven to act when the caster 13 is pulled to move by the hand rod 1, namely, the rectangular blade 14 is driven to repeatedly move transversely when the caster 13 moves, but the characteristics are not moved when the caster 13 moves backwards.

Further, a loosening component 3 is mounted at the tail of the rectangular blade 14, as a technical means, the loosening component 3 comprises bearing seats 31 respectively mounted at two sides of the tail of the rectangular blade 14, an outer sleeve rod 32 is arranged between the two bearing seats 31, a plurality of first extending plates 33 are equidistantly mounted on the outer sleeve rod 32, an inner rod 34 is penetratingly arranged inside the outer sleeve rod 32, the inner rod 34 is rotatably connected with the outer sleeve rod 32, mounting through holes 35 are formed in the outer sleeve rod 32 at positions between the adjacent first extending plates 33, second extending plates 36 are mounted on the inner rod 34 at positions of the mounting through holes 35, and the second extending plates 36 extend to the outer side of the outer sleeve rod 32 from the positions of the mounting through holes 35 and are flush with the first extending plates 33;

the outer sleeve rod 32 drives the first extension plate 33 to deflect when the rectangular blade 14 moves leftwards, and drives the inner rod 34 to drive the second extension plate 36 to deflect when the rectangular blade 14 moves rightwards;

for the first deflection connecting piece 37 and the second deflection connecting piece 38, the first deflection connecting piece 37 and the second deflection connecting piece 38 respectively comprise a telescopic rod 39 and a guide rail rod 310, the telescopic rod 39 is correspondingly arranged on the corresponding outer sleeve rod 32 and the corresponding inner rod 34 in correspondence with the first deflection connecting piece 37 and the second deflection connecting piece 38, the guide rail rod 310 is correspondingly arranged at the side edge position of the U-shaped bracket 11 in correspondence with the first deflection connecting piece 37 and the second deflection connecting piece 38 respectively, and a through guide rail hole 311 is formed at the end part of the telescopic rod 39;

the guide rail rods 310 comprise straight rod sections 312 and arc rod sections 313, the straight rod sections 312 are arranged on the U-shaped support 11, the arc rod sections 313 are arranged at the end parts of the straight rod sections 312, the first deflection connecting piece 37 and the second deflection connecting piece 38 are sleeved on the corresponding straight rod sections 312 through guide rail holes 311, and by means of the design, when the rectangular blade 14 moves leftwards, the left expansion rod 39 can be driven to drive the outer sleeve rod 32 to deflect through the design of the arc rod sections 313, the right expansion rod 39 is positioned at the right straight rod section 312, namely the inner rod 34 is kept stable and not rotated, so that the first expansion plate 33 is singly turned upwards, when the rectangular blade 14 deflects rightwards, the second expansion plate 36 is singly turned upwards, and in the process that the first left deflection rectangular blade 14 is reset to be in an initial state, the first expansion plate 33 is reset, and effective separation of soil passing from the first expansion plate 33 and the upper part of the second expansion plate 36 from weed roots is ensured.

Example 2

The application provides an optimized technical scheme based on the embodiments 11-12: the top of the U-shaped bracket 11 is provided with a connecting rod 4 which is inclined upwards and backwards, and the top end of the connecting rod 4 is provided with a screw hole I41;

a connecting screw rod 42 is arranged at the bottom end of the hand lever 1, the hand lever 1 is detachably connected with the connecting rod 4 by utilizing the connecting screw rod 42 and the screw hole I41, and the hand lever 1 and the U-shaped bracket 11 can be separated by the design, so that the space occupation rate is reduced.

In addition, the hand lever 1 is of a T-shaped lever structure, and a rubber jacket 43 is sleeved on a transverse section of the tail of the hand lever to facilitate holding.

And a screw hole II 44 is formed at the tail end of the U-shaped bracket 11, after the hand rest rod 1 is installed at the position of the screw hole II 44 by using the connecting screw rod 42, the U-shaped bracket 11 and the caster wheel 13 can be pulled to move, and the rectangular blade 14 and the loosening element 3 are overhead, so that collision between the rectangular cutter head 14 and the loosening element 3 and the ground can be effectively avoided, and effective protection is provided.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a crops pest control device, includes hand lever (1) and installs in hand lever (1) bottom and opening U type support (11) forward, its characterized in that: the front end of the U-shaped bracket (11) is rotatably provided with a main shaft (12), the main shaft (12) is provided with a castor (13), the main shaft (12) is driven to rotate when the hand lever (1) is pushed to move, and the rear end of the U-shaped bracket (11) is sleeved with a rectangular blade (14);

a through groove (15) perpendicular to the advancing direction of the caster wheel (13) is formed in the rear end position of the U-shaped bracket (11), a bearing shaft (16) is penetrated in the through groove (15) in a sliding way, two ends of the bearing shaft (16) are respectively connected with two sides of the rectangular blade (14), a linkage part (2) is arranged between the main shaft (12) and the rectangular blade (14), and when the main shaft (12) rotates, the linkage part (2) is utilized to drive the rectangular blade (14) to repeatedly move transversely;

a loosening part (3) is arranged at the tail part of the rectangular blade (14), and when the rectangular blade (14) repeatedly moves transversely, soil scooped up by the rectangular blade (14) is loosened by the loosening part (3);

the knife edge of the rectangular blade (14) is in a zigzag shape;

the linkage component (2) comprises a vertical shaft (21) arranged on the U-shaped bracket (11), a transverse rod (22) is arranged on the vertical shaft (21), one end of the transverse rod (22) extends to the upper side of the rectangular blade (14), a through transverse through hole I (23) is formed in the position, above the rectangular blade (14), of the transverse rod (22), and a stand column (24) is arranged at the top of the rectangular blade (14), and the stand column (24) penetrates through the transverse through hole I (23) and is in sliding connection with the inner wall of the stand column;

the device also comprises a jacking mechanism (25) arranged on the U-shaped bracket (11), wherein the jacking mechanism (25) is connected with the main shaft (12) and is matched with one end of the transverse rod (22) far away from the transverse through hole I (23), and when the main shaft (12) rotates, the transverse rod (22) is jacked to repeatedly deflect in the left direction and the right direction so as to repeatedly transversely move the rectangular blade (14);

the jacking mechanism (25) comprises a driving sprocket (251) arranged on the main shaft (12), an extension shaft (252) parallel to the main shaft (12) is rotatably arranged on the U-shaped bracket (11), a driven sprocket (253) is arranged on the extension shaft (252), and a transmission chain (254) is arranged outside the driving sprocket (251) and the driven sprocket (253) so as to drive the extension shaft (252) to continuously rotate when the caster (13) advances;

the U-shaped bracket (11) is also provided with a supporting plate (255), the supporting plate (255) is penetrated and provided with a rotating shaft (256), the end part of the extending shaft (252) is provided with a driving bevel gear (257), the bottom end of the rotating shaft (256) is provided with a driven bevel gear (258) meshed with the driving bevel gear (257) so as to drive the rotating shaft (256) to synchronously rotate when the main shaft (12) rotates, the top end of the rotating shaft (256) is provided with a cam shaft (259), the end part of the cam shaft (259) is provided with a top shaft (260), one end of the transverse rod (22) far away from the transverse through hole I (23) is provided with a through transverse through hole II (261), and the top shaft (260) penetrates through the transverse through hole II (261) and is in sliding connection with the inner wall of the transverse through hole II so as to utilize the top shaft (260) to top the transverse rod (22) to repeatedly deflect left and right when the rotating shaft (256) rotates;

the end part of the main shaft (12) is sleeved with a first ratchet mechanism (27), the driving sprocket (251) is sleeved and arranged on the outer side of the first ratchet mechanism (27), a second ratchet mechanism (28) is arranged on the U-shaped support (11) in a penetrating mode, the outer ring of the second ratchet mechanism (28) is connected with the U-shaped support (11), the extending shaft (252) penetrates through the inner ring of the second ratchet mechanism (28) and is connected with the inner ring of the second ratchet mechanism, so that the extending shaft (252) rotates unidirectionally, and the rectangular blade (14) and the loose part (3) cannot be driven to act when the caster (13) is pulled by the hand rod (1).

2. A crop pest control device according to claim 1, characterized in that: the loosening component (3) comprises bearing seats (31) which are respectively arranged at two sides of the tail of the rectangular blade (14), an outer sleeve rod (32) is arranged between the two bearing seats (31), a plurality of first extending plates (33) are equidistantly arranged on the outer sleeve rod (32), an inner rod (34) is arranged inside the outer sleeve rod (32) in a penetrating mode, the inner rod (34) is rotatably connected with the outer sleeve rod (32), mounting through holes (35) are formed in positions, located between the adjacent first extending plates (33), of the outer sleeve rod (32), extension plates II (36) are arranged in positions, located in the mounting through holes (35), of the inner rod (34), and the extension plates II (36) extend to the outer side of the outer sleeve rod (32) from the mounting through holes (35) and are flush with the first extending plates (33);

the novel rectangular knife blade is characterized by further comprising a first deflection connecting piece (37) arranged between the outer loop bar (32) and the U-shaped support (11), wherein one end of the inner bar (34) away from the first deflection connecting piece (37) extends to the outer side of the outer loop bar (32), and a second deflection connecting piece (38) is arranged at one end of the inner bar (34) located outside the outer loop bar (32), so that the outer loop bar (32) is driven to drive the first extension plate (33) to deflect when the rectangular knife blade (14) moves leftwards, and the inner bar (34) is driven to drive the second extension plate (36) to deflect when the rectangular knife blade (14) moves rightwards.

3. A crop pest control device as claimed in claim 2, wherein: the first deflection connecting piece (37) and the second deflection connecting piece (38) comprise a telescopic rod (39) and a guide rail rod (310), the telescopic rod (39) is correspondingly arranged on the corresponding outer sleeve rod (32) and the corresponding inner sleeve rod (34) in a manner of corresponding to the first deflection connecting piece (37) and the second deflection connecting piece (38), the guide rail rod (310) is correspondingly arranged on the side edge position of the U-shaped bracket (11) in a manner of corresponding to the first deflection connecting piece (37) and the second deflection connecting piece (38), and a penetrating guide rail hole (311) is formed in the end part of the telescopic rod (39);

the guide rail rods (310) comprise straight rod sections (312) and arc rod sections (313), the straight rod sections (312) are arranged on the U-shaped support (11), the arc rod sections (313) are arranged at the end parts of the straight rod sections (312), and telescopic rods (39) of the first deflection connecting piece (37) and the second deflection connecting piece (38) are sleeved on the corresponding straight rod sections (312) through guide rail holes (311) respectively.

4. A crop pest control device as claimed in claim 3, characterised in that: a connecting rod (4) which is inclined upwards and backwards is arranged at the top of the U-shaped bracket (11), and a screw hole I (41) is formed in the top end of the connecting rod (4);

the bottom end of the hand rod (1) is provided with a connecting screw rod (42), and the hand rod (1) is detachably connected with the connecting rod (4) by the connecting screw rod (42) and the screw hole I (41).

5. A crop pest control device according to claim 4, characterized in that: the hand lever (1) is of a T-shaped lever structure, and a rubber jacket (43) is sleeved on the transverse section of the tail part of the hand lever.

6. A crop pest control device according to claim 5, characterized in that: screw holes II (44) are formed in the tail end of the U-shaped support (11), and after the hand rod (1) is installed at the screw holes II (44) through the connecting screw rod (42), the U-shaped support (11) and the casters (13) can be pulled to move, and the rectangular blade (14) and the loosening component (3) are overhead.