CN114303526A - Ditching device - Google Patents

Abstract

The invention discloses a trencher which comprises a fixed frame, an engine positioned in the fixed frame and a trenching assembly in transmission connection with the engine, wherein a handle is arranged on one side of the fixed frame, which is far away from a supporting frame, and the top of the handle is provided with a switch; a mounting frame is arranged on one side, far away from the handle, of the bottom of the fixing frame; the electric ditching machine comprises a fixing frame, a motor, a ditching assembly, an arc holding rod and a connecting rod, wherein the fixing frame is arranged on the outer side of the fixing frame, the arc holding rod is arranged on the outer side of the fixing frame, the connecting rod is arranged between the fixing frame and the holding rod, and the connecting rod plays a role of reinforcing a structure.

Description

Ditching device

Technical Field

The invention relates to the technical field of trenchers, in particular to a trencher.

Background

The planting industry is one of the main components of agriculture, and the crop planting field needs to dig grooves for planting crops before planting the crops by utilizing the living functions of the plants and obtaining the social production departments of grains, non-staple food, feed and industrial raw materials through artificial cultivation.

Most of the existing methods use tools manually to dig ditches on the planting field, the manual efficiency is low, the ditching efficiency on the planting field is low, the use of people is inconvenient, and in addition, for some narrow and deep ditches, no corresponding tool is produced in the market, and the invention is yet to be invented.

Disclosure of Invention

The present invention is directed to a trencher that solves the above-mentioned problems of the prior art.

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

a trencher characterized by: the ditching device comprises a fixed frame, an engine positioned in the fixed frame and a ditching assembly in transmission connection with the engine.

The invention is further optimized, a handle is arranged on one side of the fixed frame, which is far away from the supporting frame, and a switch is arranged on the top of the handle;

a mounting frame is arranged on one side, far away from the handle, of the bottom of the fixing frame;

and the arc-shaped holding rod is arranged outside the fixed frame, a connecting rod is arranged between the fixed frame and the holding rod, and the function of reinforcing the structure is achieved through the connecting rod.

Further preferably, a first protective cover is arranged at one end, close to the connecting rod, of the engine;

a fixing plate is arranged on one side of the engine close to one end of the first protective cover;

a rotating shaft penetrating into the supporting frame is arranged on one side, far away from the engine, of the fixing plate, a driven wheel is arranged on the outer side of one end of the rotating shaft, and power transmission is achieved between the driven wheel and the engine through a transmission belt;

a second protective cover is arranged at one end, close to the driven wheel, of the fixing plate;

a baffle is arranged at one end of the fixing plate, which is far away from the second protective cover;

and an oil filling port with a plug is arranged at the top of the engine.

The invention is further optimized, and the baffle comprises a vertical plate body and a transverse plate body which are integrally formed;

one side of the vertical plate body, which is far away from the fixed plate, extends outwards to form an integrally formed extension plate;

wherein a mud blocking cavity is formed among the extension plate, the vertical plate body and the transverse plate body; the soil is convenient to flow back and tumble, and fully contacts with the conical separation strip and the tooth-shaped separation strip, so that the effect of efficiently dispersing the soil is achieved.

A plurality of conical separation strips for separating soil are formed on the inner side surfaces of the transverse plate bodies; this is a construction for better separation of the soil, from the longitudinal direction.

The side edges of the extension plates extend inwards to form tooth-shaped separation strips, and the structure is used for better separating soil, separating the soil transversely and not concentrating the soil together, so that the overall efficiency can be improved for trenching. This structure and toper separation strip cooperate each other for earth is all-round to be separated, has improved the operating efficiency.

The invention is further optimized, the mounting frame comprises a U-shaped frame body, the U-shaped frame comprises a mounting top plate matched and fixed with the fixed frame and a U-shaped support positioned at the bottom of the mounting top plate, and 2 groups of mounting clamping grooves are formed at the bottom of the U-shaped support and are matched, mounted and fixed with the movable frame.

Further preferably, the trenching assembly comprises a support frame, wherein a first groove is formed in one end of the interior of the support frame, and a second groove is formed in one end of the interior of the support frame, which is far away from the first groove;

one end of the first groove is provided with a first gear matched with the rotating shaft;

an adjusting frame is arranged inside the second groove;

a second gear is arranged in the adjusting frame, and a fixed shaft is arranged in the middle of the inner part of the second gear;

a movable groove is formed in the middle position, close to one end of the adjusting frame, in the supporting frame;

an adjusting rod penetrating to one end of the adjusting frame is arranged inside the movable groove;

and chains are arranged on the outer sides of the first gear and the second gear.

Further preferably, the chain comprises a plurality of chain sections, and the chain sections are provided with blades;

the blade comprises a cutter handle part, a bending part, a soil breaking part and a cutter opening part which are integrally formed; the structure can improve the integral structural strength and is of an integral structure.

The knife edge part is positioned at the front end of the knife handle part and comprises an arc-shaped knife edge, and 3 arc-shaped auxiliary blades are respectively formed on two sides of the arc-shaped knife edge; an upward arc-shaped sheet is formed at the rear end of the arc-shaped knife edge; the arc-shaped knife edge can easily break soil and dig ditches, a three-dimensional knife edge can be formed through the arc-shaped auxiliary blade to loosen the soil and dig ditches, and the structure is not available on the market. Wherein the evagination height of 3 arc auxiliary blade is inwards for increasing in proper order from arc edge of a knife department, and the arc edge of a knife forms the incision of multilayer multichannel each other with 6 arc auxiliary blade of both sides and digs soil, and whole digging efficiency is high.

The bent part is positioned between the tool opening part and the tool handle part and comprises an arc-shaped bent opening, and convex arc-shaped bent edges are formed on two sides of the arc-shaped bent opening, the arc-shaped bent edges are positioned on the rear side of the arc-shaped bent opening, and the distance between the arc-shaped bent edges and the arc-shaped bent opening is 0.5-1 mm; one end of the arc-shaped bent edge is connected with the ground breaking part, and the other end of the arc-shaped bent edge is connected with the knife edge part; this structure can realize the high efficiency and loosen the soil, and especially formula arc bead forms a three-dimensional bending opening of loosening the soil together with the arc crimp, loosens the soil through sword oral area portion before and breaks the soil, then carries out earth with the help of the kink and spills, and efficiency is showing and is improving.

The ground breaking part comprises a tungsten steel cutter head positioned at the top of the rear end of the cutter handle part, and the cross section of the tungsten steel cutter head is of a trapezoidal structure; the tungsten steel cutter head is higher than the cutter opening part, and the cross sectional area is also larger than that of the cutter opening part, so that soil can be excavated in a wider range, particularly after soil is excavated and loosened at the cutter opening part and the bending part, the soil can be excavated in a wider range at the broken opening part, and efficient trenching operation is met.

The adjusting frame is movably connected with the supporting frame through the second groove, external threads are arranged on the outer side of the adjusting rod, a threaded hole matched with the adjusting rod is formed in one end of the movable groove, the adjusting rod is in threaded connection with the supporting frame through the threaded hole, a bearing is arranged at one end of the adjusting frame, and the adjusting rod penetrates into the bearing to meet tightness adjustment.

The brake device is further preferred, the brake device further comprises a movable frame, rotating wheels are arranged at two ends of the movable frame, a push rod is arranged on the outer side of the movable frame, a handle is arranged at one end, far away from the movable frame, of the push rod, and a brake controller is arranged on the outer side of one end, close to the handle, of the push rod.

The invention is further optimized, the movable frame comprises 2 main rods and auxiliary rods which are arranged in parallel, and also comprises an auxiliary plate which can be matched, installed and fixed with the fixed frame, so that the ditching operation can be well pushed when the soil is loosened, and the overall ditching efficiency is improved.

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

1. according to the invention, the first gear and the driven wheel are fixed through the rotating shaft, so that the driven wheel and the first gear rotate synchronously, the trencher is fixed on the movable frame through the mounting frame, the brake controller is connected with the switch, the trencher can move more easily through the moving wheel, the driven wheel is driven to rotate through the transmission belt, the driven wheel drives the first gear to rotate through the rotating shaft, the second gear and the second groove to rotate through the fixed shaft, the chain can rotate through the first gear and the second gear, the blade is driven to rotate through the rotating chain, the planting field is rapidly trenched through the blade, and the working efficiency of the trencher is improved.

2. According to the invention, the adjusting rod and the adjusting frame can rotate through the bearing, the adjusting frame and the supporting frame can move left and right through the second groove, the external threads on the outer side of the adjusting rod are matched with the threaded holes on one side of the movable groove, so that the adjusting rod drives the adjusting frame to move left and right, left and right adjustment of the second gear is realized, the distance between the first gear and the second gear can be adjusted, the tensioning and adjusting effect of the chain is better, the detection on the trencher is convenient, and the practicability of the trencher is improved.

3. The chain comprises a plurality of chain sections, and blades are arranged on the chain sections; the blade comprises a cutter handle part, a bending part, a soil breaking part and a cutter opening part which are integrally formed; this structure can improve holistic structural strength, structure as an organic whole, and the incision that forms multilayer multichannel between the arc edge of a knife and the 6 arc auxiliary blade of both sides each other loosens the soil and digs earth, and whole digging efficiency is high. The kink structure can realize the high-efficient opening of the earth, and especially formula arc bead forms a three-dimensional bending opening of loosening the earth together with the arc crimp, loosens the earth through sword oral area portion before and breaks the earth, then carries out earth with the help of the kink and spills, and broken portion can open earth more extensively, especially sword oral area portion and kink back that loosens the earth, and broken oral area portion ability more extensive digging satisfies high-efficient ditching operation.

The invention can well perform the trenching operation, generally perform the trenching operation with the width of about 30-50 mm and the depth of 700 and 800 mm, and of course, the blade can be adjusted according to the actual requirement, and the trenching operation can be performed on the trenches with different sizes.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Figure 2 is a cross-sectional view of the trenching assembly of the present invention.

Figure 3 is a top view of the trenching assembly of the present invention.

Fig. 4 is a partial structural schematic diagram of the present invention.

Fig. 5 is a schematic structural diagram of the mounting bracket of the present invention.

Fig. 6 is a schematic view of a blade according to the present invention.

Fig. 7 is a schematic view of a blade of the present invention.

Fig. 8 is a schematic view of a baffle plate in the present invention.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, an embodiment of a trencher of the present invention:

a trencher characterized by: the ditching device comprises a fixed frame 1, an engine 2 positioned in the fixed frame 1 and a ditching assembly in transmission connection with the engine 2. The side, far away from the support frame 3, of the fixing frame 1 is provided with a handle 101, the top of the handle 101 is provided with a switch 102, the switch 102 is used for controlling a motor, and the handle is convenient for an operator to hold and operate.

The bottom of the fixed frame 1 is provided with a mounting frame 103 at one side far away from the handle 101; wherein the mounting bracket 103 includes the U type support body, the frame U type includes the installation roof that matches fixed usefulness with mount 1, the U type support that is located the installation roof bottom, the bottom of U type support forms 2 sets of installation card groove 1031, and this installation card groove 1031 matches the installation each other with mobile jib 41 and subsidiary pole 42 and fixes, and both are connected for the dismantlement formula, and the installation is fixed very convenient nimble.

And an arc-shaped holding rod 104 arranged outside the fixed frame 1, a connecting rod 105 is arranged between the fixed frame 1 and the holding rod 104, a clamping hook (not shown) is formed on the connecting rod 105, and the connecting rod 105 and the push rod 402 are mutually clamped and locked and installed. One end of the engine 2 close to the connecting rod 105 is provided with a first protective cover 201, so that a protective effect is achieved. A fixing plate 202 is arranged on one side of the engine 2 close to one end of the first protective cover 201; a rotating shaft 203 penetrating into the supporting frame 3 is arranged on one side, far away from the engine 2, in the fixing plate 202, a driven wheel 204 is arranged on the outer side of one end of the rotating shaft 203, and power transmission is realized between the driven wheel 204 and the engine through a transmission belt 205; a second protective cover 206 is arranged at one end of the fixing plate 202 close to the driven wheel 204; a baffle 207 is arranged at one end of the fixing plate 202 far away from the second protective cover 206; the top of the engine 2 is provided with a plugged oil fill port 208. Referring to fig. 8, the baffle 207 includes a vertical plate 2071 and a horizontal plate 2072 which are integrally formed; one side of the vertical plate 2071, which is far away from the fixed plate 202, extends outward to form an integrally formed extension plate 2073; wherein a mud blocking cavity 2075 is formed among the extension plate 2073, the vertical plate 2071 and the transverse plate 2072; the soil is convenient to flow back and tumble, and fully contacts with the conical separation strip and the tooth-shaped separation strip, so that the effect of efficiently dispersing the soil is achieved. A plurality of conical separation bars 2074 for separating soil are formed on the inner side surface of the transverse plate body 2072; this is a construction for better separation of the soil, from the longitudinal direction. The sides of the extension plates extend inward to form castellated parting strips 2075, which are configured to better separate soil from the lateral direction without being concentrated together, and to improve overall efficiency for trenching. This structure and toper separation strip cooperate each other for earth is all-round to be separated, has improved the operating efficiency.

Referring to fig. 1 and 4, in the invention, a fixing groove is formed in the fixing frame 1, the engine 2 is fixedly connected with the fixing frame 1 through the fixing groove, so that the engine 2 can be conveniently fixed, fixing bolts are arranged at two ends of the mounting frame 103, the mounting frame 103 is detachably connected with the fixing frame 1 through the fixing bolts, the mounting frame 103 is better fixed, fixing holes are formed in the top end of the inner part of the mounting frame 103, the holding rod 104 is fixedly connected with the mounting frame 103 through the fixing holes, and the holding rod 104 is convenient for moving the trencher.

Please refer to fig. 1 and 4, in the present invention, a through hole is disposed at one side of the connecting rod 105 close to the holding rod 104, the connecting rod 105 is detachably connected to the holding rod 104 through the through hole, so as to limit the holding rod 104, a plurality of sets of fixing bolts are disposed at one side of the connecting rod 105 far from the holding rod 104, the connecting rod 105 is detachably connected to the fixing frame 1 through the fixing bolts, and mounting grooves are disposed at two ends of the bottom of the mounting frame 103, so as to facilitate mounting the trencher and the movable frame 4.

Please refer to fig. 1 and 4, in the present invention, a fixing plate 202 is welded to an engine 2, a mounting block is disposed on one side of the fixing plate 202 near one end of a baffle 207, the baffle 207 is detachably connected to the fixing plate 202 through the mounting block to achieve a splash-proof effect, so that the trencher has a better use effect, a plurality of sets of bolts are disposed on the outer side of a first shield 201, the first shield 201 is detachably connected to the engine 2 through the bolts, the first shield 201 and the engine 2 are fixed through the bolts, so as to achieve a better protection effect for the engine 2, a plurality of sets of bolts are disposed on the outer side of a second shield 206, the second shield 206 is detachably connected to the fixing plate 202 through the bolts, and the fixing plate 202 is protected through the second shield 206.

Referring to fig. 1 and 4, in the present invention, a bearing is disposed on a side of the fixing plate 202 close to the rotating shaft 203, the rotating shaft 203 is rotatably connected to the fixing plate 202 through the bearing, the rotating shaft 203 and the fixing plate 202 can rotate through the bearing, the driven wheel 204 is rotatably connected to the engine 2 through the transmission belt 205, the engine 2 drives the driven wheel 204 to rotate through the transmission belt 205, a mounting hole is disposed in the driven wheel 204, and the driven wheel 204 is fixedly connected to the rotating shaft 203 through the mounting hole, so as to fix the driven wheel 204 and the rotating shaft 203.

Referring to fig. 3-4 and 6-7, the trenching assembly of the present invention comprises a support frame 3, a first groove 301 is formed at an end of the interior of the support frame 3, and a second groove 303 is formed at an end of the interior of the support frame 3 away from the first groove 301;

a first gear 302 matched with the rotating shaft 203 is arranged at one end inside the first groove 301;

an adjusting frame 304 is arranged inside the second groove 303;

a second gear 305 is arranged inside the adjusting bracket 304, and a fixed shaft 306 is arranged in the middle inside the second gear 305;

a movable groove 307 is arranged at the middle position of one end of the support frame 3 close to the adjusting frame 304;

an adjusting rod 308 penetrating to one end of the adjusting frame 304 is arranged inside the movable groove 307;

a chain 309 is disposed outside the first gear 302 and the second gear 305.

In the present invention, the chain 309 comprises a plurality of chain sections, and the chain sections are provided with blades 310;

the blade 310 comprises a handle part 311, a bent part 312, a ground breaking part 313 and a blade part 314 which are integrally formed;

the knife edge part 314 is positioned at the front end of the knife handle part 311, the knife edge part 314 comprises an arc-shaped knife edge 3141, and 3 arc-shaped auxiliary blades 3142 are respectively formed on two sides of the arc-shaped knife edge 3141; the rear end of the arc-shaped knife edge 3141 forms an upward arc-shaped piece 3143;

the bending part 312 is located between the tool mouth part 314 and the tool shank part 311, and includes an arc-shaped bent mouth 3121, and convex arc-shaped bent sides 3122 are formed at two sides of the arc-shaped bent mouth 3121, the arc-shaped bent sides 3122 are located at the rear side of the arc-shaped bent mouth 3121, and the distance between the two is 0.5-1 mm; one end of the arc-shaped bent edge 3122 is connected with the ground breaking part 313, and the other end is connected with the knife edge part 314;

the ground breaking part 313 comprises a tungsten steel cutter head 3131 positioned at the top of the rear end of the cutter handle part 311, and the cross section of the tungsten steel cutter head 3131 is of a trapezoidal structure; the tungsten steel cutting head 3131 is higher than the cutting edge portion 314.

Referring to fig. 1 and 5, the inside of two sets of wheels 401 that rotate all is provided with rotates the hole, it rotates with adjustable shelf 4 through rotating the hole to rotate wheel 401, can make removal wheel 402 take place to rotate with adjustable shelf 4 through rotating the hole, it is better to make the removal effect of ditching ware, the inside that push rod 402 is close to adjustable shelf 4 one end is provided with the movable hole, push rod 402 rotates with adjustable shelf 4 through the movable hole to be connected, can make push rod 402 take place to rotate with adjustable shelf 4 through the movable hole, the outside of adjustable shelf 4 is provided with multiunit installation piece, mount 1 can dismantle with adjustable shelf 4 through mounting bracket 103 and be connected, be convenient for carry out the dismouting to the ditching ware.

Referring to fig. 2 and 3, the adjusting bracket 304 is movably connected with the supporting frame 3 through the second groove 303, the outer side of the adjusting rod 308 is provided with an external thread, one end of the movable groove 307 is provided with a threaded hole matched with the adjusting rod 308, the adjusting rod 308 is connected with the supporting frame 3 through a threaded hole, a limiting effect is achieved, the adjusting rod 208 drives the adjusting bracket 304 to move left and right, one end of the adjusting bracket 304 is provided with a bearing, the adjusting rod 308 penetrates into the bearing, the adjusting rod and the adjusting bracket 304 can rotate, and the adjusting effect of the second gear 305 is better.

According to the invention, a fixing hole is formed in the first gear 302, the first gear 302 is fixedly connected with the rotating shaft 203 through the fixing hole, the first gear 302 and the rotating shaft 203 are fixed through the fixing hole, the first gear 302 is rotatably connected with the support frame 3 through the rotating shaft 203, a bearing is arranged in the second gear 305, the fixing shaft 306 penetrates into the bearing, the second gear 305 is rotatably connected with the fixing shaft 306 through the bearing, and the second gear 305 and the fixing shaft 306 can rotate through the bearing.

The invention further comprises a movable frame 4, rotating wheels 401 are arranged at two ends of the movable frame 4, a push rod 402 is arranged on the outer side of the movable frame 4, a grip 403 is arranged at one end, far away from the movable frame 4, of the push rod 402, and a brake controller 404 is arranged on the outer side of one end, close to the grip 403, of the push rod 402. The movable frame 4 comprises a main rod 41 and an auxiliary rod 42 which are arranged in parallel, and further comprises an auxiliary plate 43 which can be matched with the fixed frame for installation and fixation, and is locked and installed by means of the clamping hook and the push rod 402, so that the integral fixed installation is completed, the ditching operation is well pushed when the soil is loosened, the integral ditching efficiency is improved, and the labor intensity of workers is reduced.

The invention can well perform the ditching operation, generally perform the ditching operation on the ditches with the width of about 30-50 mm and the depth of 700-800 mm, and certainly can also adjust the blade according to the actual requirement and perform the ditching operation on the ditches with different sizes.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (10)

1. A trencher characterized by: the ditching device comprises a fixed frame (1), an engine (2) positioned in the fixed frame (1) and a ditching assembly in transmission connection with the engine (2).

2. A trencher as defined in claim 1 wherein: a handle (101) is arranged on one side of the fixed frame (1) far away from the support frame (3), and a switch (102) is arranged at the top of the handle (101);

a mounting rack (103) is arranged on one side, away from the handle (101), of the bottom of the fixing rack (1);

and the arc-shaped holding rod (104) is arranged on the outer side of the fixed frame (1), and a connecting rod (105) is arranged between the fixed frame (1) and the holding rod (104).

3. A trencher as defined in claim 1 wherein: a first protective cover (201) is arranged at one end, close to the connecting rod (105), of the engine (2);

a fixing plate (202) is arranged on one side, close to one end of the first protective cover (201), of the engine (2);

a rotating shaft (203) penetrating into the supporting frame (3) is arranged on one side, far away from the engine (2), in the fixing plate (202), a driven wheel (204) is arranged on the outer side of one end of the rotating shaft (203), and power transmission is achieved between the driven wheel (204) and the engine through a transmission belt (205);

a second protective cover (206) is arranged at one end of the fixing plate (202) close to the driven wheel (204);

a baffle (207) is arranged at one end, far away from the second protective cover (206), of the fixing plate (202);

the top of the engine (2) is provided with an oil filling port (208) with a plug.

4. A trencher as defined in claim 3 wherein: the baffle (207) comprises a vertical plate body (2071) and a transverse plate body (2072) which are integrally formed;

one side of the vertical plate body (2071) far away from the fixing plate (202) extends outwards to form an integrally formed extension plate (2073);

wherein a mud blocking cavity (2075) is formed among the extension plate (2073), the vertical plate body (2071) and the transverse plate body (2072);

a plurality of conical separation strips (2074) for separating soil are formed on the inner side surface of the transverse plate body (2072);

the side edges of the extension plates extend inwards to form tooth-shaped separation strips (2075).

5. A trencher as defined in claim 1 wherein: the mounting rack (103) comprises a U-shaped rack body, the U-shaped rack comprises a mounting top plate (1031) matched and fixed with the fixing rack (1) and a U-shaped bracket (1032) located at the bottom of the mounting top plate (1031), and 2 groups of mounting clamping grooves are formed in the bottom of the U-shaped bracket.

6. A trencher as defined in claim 1 wherein: the ditching assembly comprises a support frame (3), wherein a first groove (301) is formed in one end inside the support frame (3), and a second groove (303) is formed in one end, far away from the first groove (301), inside the support frame (3);

a first gear (302) matched with the rotating shaft (203) is arranged at one end inside the first groove (301);

an adjusting frame (304) is arranged inside the second groove (303);

a second gear (305) is arranged in the adjusting frame (304), and a fixed shaft (306) is arranged in the middle of the inner part of the second gear (305);

a movable groove (307) is arranged in the middle position of one end of the support frame (3) close to the adjusting frame (304);

an adjusting rod (308) penetrating to one end of the adjusting frame (304) is arranged in the movable groove (307);

chains (309) are arranged on the outer sides of the first gear (302) and the second gear (305).

7. A trencher as defined in claim 6 wherein: the chain (309) comprises a plurality of chain sections, and blades (310) are arranged on the chain sections;

the blade (310) comprises a handle part (311), a bent part (312), a ground breaking part (313) and a blade part (314) which are integrally formed;

wherein the knife edge part (314) is positioned at the front end of the knife handle part (311), the knife edge part (314) comprises an arc-shaped knife edge (3141), and 3 arc-shaped auxiliary blades (3142) are respectively formed on two sides of the arc-shaped knife edge (3141); the rear end of the arc-shaped knife edge (3141) forms an upward arc-shaped sheet (3143);

the bending part (312) is positioned between the tool opening part (314) and the tool handle part (311), and comprises an arc-shaped bent opening (3121), convex arc-shaped bent edges (3122) are formed on two sides of the arc-shaped bent opening (3121), the arc-shaped bent edges (3122) are positioned on the rear side of the arc-shaped bent opening (3121), and the distance between the arc-shaped bent edges and the arc-shaped bent edges is 0.5-1 mm; one end of the arc-shaped bent edge (3122) is connected with the ground breaking part (313), and the other end is connected with the knife edge part (314);

the ground breaking part (313) comprises a tungsten steel cutter head (3131) positioned at the top of the rear end of the cutter handle part (311), and the cross section of the tungsten steel cutter head (3131) is of a trapezoidal structure; the tungsten steel tool bit (3131) is higher than the tool edge part (314).

8. A trencher as defined in claim 4 wherein: the adjusting bracket (304) is movably connected with the support frame (3) through a second groove (303), an external thread is arranged on the outer side of the adjusting rod (308), a threaded hole matched with the adjusting rod (308) is formed in one end of the movable groove (307), the adjusting rod (308) is connected with the support frame (3) through the threaded hole, a bearing is arranged at one end of the adjusting bracket (304), and the adjusting rod (308) penetrates into the bearing.

9. A trencher as claimed in any of claims 1-9 wherein: still include adjustable shelf (4), the both ends of adjustable shelf (4) all are provided with and rotate wheel (401), the outside of adjustable shelf (4) is provided with push rod (402), push rod (402) are kept away from the one end of adjustable shelf (4) is provided with handle (403), push rod (402) are close to the outside of handle (403) one end is provided with brake controller (404).

10. A trencher as claimed in any of claim 9 wherein: the movable frame (4) comprises 2 main rods (41) and auxiliary rods (42) which are arranged in parallel, and also comprises an auxiliary plate (43).

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