Backfilling mechanism and orchard ditching fertilizer applicator

Abstract

The utility model provides a backfilling mechanism and an orchard ditching fertilizer applicator, which are applied to the technical field of orchard fertilizer application machinery, and the technical scheme is as follows: the backfilling mechanism comprises a backfilling frame, a connecting frame hinged on the backfilling frame and two soil covering discs which are positioned on two sides of the connecting frame and are arranged on the connecting frame in a V shape; a pressure applying assembly capable of adjusting the downward pressure of the soil covering disc is arranged between the backfilling frame and the connecting frame; the connecting frame comprises a hinge rod hinged to the backfilling frame and a connecting rod adjustably installed on the hinge rod. The two soil covering plates are adjustably mounted at the two ends of the connecting rod; the pressure applying assembly comprises an adjusting rod and a spring; one end of the adjusting rod is hinged to the hinge rod through the hinge head, the other end of the adjusting rod is movably connected to the backfilling frame, the adjusting rod is sleeved with the spring, and the spring is limited between the hinge head and the backfilling frame; the method has the technical effects that the backfilling effect of the whole soil is ensured, so that the fertilizer can be fully absorbed by fruit trees, the purpose of increasing production and income is achieved, and the operation intensity of fruit farmers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of orchard fertilization operation machinery, in particular to a backfilling mechanism and an orchard trenching fertilization machine. Background Art

[0002] Fruit trees need to be fertilized at the root every year to ensure adequate nutrients. Domestic orchards use trenching fertilizer plows to apply fertilizer;

[0003] At present, a Chinese utility model with a publication number of CN206481600U discloses an integrated machine for ditching, fertilizing and covering soil for fruit trees, including a horizontal frame with a traction suspension arm at the front end, a fertilizer storage hopper on the frame, ditching and tamping plowshares are respectively installed on both sides below the front of the frame, and an inverted rotating plowshare is installed at the rear of each ditching and tamping plowshare as a backfilling mechanism, a discharge port is opened at the bottom of the fertilizer storage hopper on the frame, the discharge port is connected to a fertilizer delivery pipe leading to both sides, a spiral delivery device is arranged in the fertilizer delivery pipe, and both sides of the fertilizer delivery pipe are connected to a fertilizer discharge pipe leading to the rear of the ditching and tamping plowshare and between the covering rotary plowshare, a ground wheel is arranged at the rear of the frame, a sprocket is arranged on the ground wheel shaft, and the sprocket drives the spiral delivery shaft in the fertilizer delivery pipe through a chain;

[0004] Although the all-in-one machine for trenching, fertilizing and covering soil can realize the one-time operation of trenching, fertilizing and covering soil, the land in the fruit forest is rugged and uneven, and the existing backfilling mechanism cannot fully fill the soil into the trench that has been dug, and the fertilizer cannot be fully buried; thus affecting the use effect of the fertilizer, the fertilizer cannot be fully absorbed by the fruit trees, and further affecting the yield of the fruit trees, damaging the interests of farmers. Utility Model Content

[0005] The utility model aims to provide a backfilling mechanism and an orchard trenching and fertilizing machine, which has the advantage of ensuring the effect of the entire soil backfilling, thereby ensuring that the fertilizer is fully absorbed by the fruit trees, achieving the purpose of increasing production and income, and reducing the work intensity of fruit farmers.

[0006] In order to achieve the above purpose and other related purposes, the utility model provides the following technical solutions:

[0007] A backfilling mechanism comprises a backfilling frame, a connecting frame hinged to the backfilling frame, and two soil covering plates located on both sides of the connecting frame and arranged on the connecting frame in a V shape;

[0008] A pressure component capable of adjusting the downward pressure of the soil covering plate is arranged between the backfill frame and the connecting frame.

[0009] In one embodiment of the utility model, the connecting frame includes a hinged rod hinged on the backfill frame and a connecting rod adjustably mounted on the hinged rod; the two covering plates are adjustably mounted on both ends of the connecting rod.

[0010] In one embodiment of the utility model, the pressure-applying assembly includes an adjusting rod and a spring; one end of the adjusting rod is hinged to the hinged rod through a hinge joint, and the other end of the adjusting rod is movably connected to the backfilling frame, and the spring is sleeved on the adjusting rod, and the spring is confined between the hinge joint and the backfilling frame.

[0011] Through the above technical solution, two covering plates are arranged on both sides of the connecting frame and are in a V-shaped structure, so that the two covering plates can collect the soil on both sides outside the ditch and backfill it into the ditch; when the covering plates are backfilling the rugged land, the pressure assembly is used to adjust the downward pressure of the covering plates, and the articulated frame can move the covering plates along the land surface; thereby ensuring the effect of soil backfilling.

[0012] The utility model also provides an orchard trenching and fertilizing machine, comprising a frame, a fertilizer box arranged on the frame, a feed pipe connected to the fertilizer box, and an auger rotatably connected to the feed pipe; the feed pipe is provided with a discharge port;

[0013] The conveying pipe is provided with a trenching mechanism and the backfilling mechanism as described above, the trenching mechanism is located in front of the backfilling mechanism, and the discharge port is located between the trenching mechanism and the backfilling mechanism;

[0014] The frame is rotatably connected to a ground wheel, and the ground wheel is connected to the auger via a transmission mechanism;

[0015] The frame is provided with a hanging point connected with the tractor.

[0016] Through the above technical solution, the fertilizer box is used to hold fertilizer; the fertilizer box is connected to the feeding pipe, so that the fertilizer in the fertilizer box enters the feeding pipe, and the auger is used to transport the fertilizer entering the feeding pipe to the discharge port and discharge it from the discharge port; the trenching mechanism is located in front of the backfilling mechanism, and the discharge port is located between the trenching mechanism and the backfilling mechanism, so that when the trenching fertilizer spreader moves forward, the opening mechanism first opens a trench on the land, and the fertilizer then freely falls from the discharge port into the trench, and the backfilling mechanism then backfills the trench with the fertilizer spread with soil;

[0017] The hanging point is used to connect with the tractor, and the traction force of the tractor is used as the driving force for the trenching fertilizer spreader to move forward; under the traction of the tractor, the trenching fertilizer spreader moves forward, the ground wheel rotates, and the driving force of the ground wheel is transmitted to the auger through the transmission mechanism to realize the rotation of the auger; thereby, the one-time operation of trenching, fertilizing and backfilling of soil is realized, the tediousness of manual operation is reduced, and the entire operation process can be completed by one person and one vehicle, thereby improving the operation efficiency.

[0018] In one embodiment of the utility model, the fertilizer box is a double-funnel structure, and two feed outlets connected to feed pipes are provided at the bottom of the fertilizer box; both feed pipes are rotatably connected to an augers, and the two augers are coaxially arranged and connected by a transmission shaft.

[0019] Through the above technical solution, the fertilizer box has a double funnel structure, which increases the capacity of the fertilizer box and solves the problems of small fertilizer box capacity and residue in the fertilizer box; the double funnel structure connects two feed pipes, so that the single-sided fertilization and soil covering operations of two rows of fruit trees can be completed at one time, thereby improving work efficiency.

[0020] In one embodiment of the utility model, the frame is rotatably connected to two ground wheels, which are connected via a wheel axle. The transmission mechanism includes sprockets respectively arranged on the wheel axle and the transmission shaft, and chains sleeved on the two sprockets.

[0021] Through the above technical solution, the trenching fertilizer spreader is pulled by a tractor, the ground wheel rolls on the ground, and the chain and the sprocket cooperate to transmit the driving force of the ground wheel to the auger, thereby realizing the rotation of the auger.

[0022] In one embodiment of the utility model, the trenching mechanism includes a fixing plate, a trencher mounted on the fixing plate, and a U-shaped bolt sleeved on the conveying pipe and fixedly connected to the fixing plate.

[0023] Through the above technical solution, the trench opener is used to open trenches on the land, and the U-bolt and the fixing plate are used to fix the trench opener on the conveying pipe.

[0024] In one embodiment of the utility model, the trench opener is a J-shaped structure, and the trench opener includes a base connected to a fixed plate and two trenching plates fixedly connected to the base, and the two trenching plates are fixedly connected in a V shape; the discharge port is located between the two trenching plates.

[0025] Through the above technical solution, the two trenching pieces are fixedly connected in a V-shape, thereby ensuring the fluidity of the soil discharged from the trench and the forming effect of the trench.

[0026] In one embodiment of the utility model, the backfill frame is provided with a connecting arc plate which is fixedly mounted on the conveying pipe by U-shaped bolts.

[0027] Through the above technical solution, the U-shaped bolts cooperate with the fixing plate to fix the trench opener and the backfill mechanism on the conveying pipe.

[0028] In one embodiment of the present invention, three hanging points are arranged at the front of the frame; the three hanging points are distributed in a triangle.

[0029] Through the above technical solution, three hanging points connected to the tractor are arranged on the frame, thereby ensuring that the trenching fertilizer spreader can run more smoothly during work and ensuring perfect working results.

[0030] As described above, the backfilling mechanism and orchard trenching and fertilizing machine of the utility model have the following beneficial effects:

[0031] 1. The position of the ground wheel is reasonable to avoid idling during operation and ensure more uniform fertilization;

[0032] 2. The fertilizer box has a double funnel structure, which increases the capacity of the fertilizer box and solves the problem of small fertilizer box capacity and residue in the fertilizer box;

[0033] 3. The soil covering plate, downward pressure spring and connecting frame cooperate to ensure the effect of the entire soil backfill, thereby ensuring that the fertilizer is fully absorbed by the fruit trees, achieving the purpose of increasing production and income, and reducing the work intensity of fruit farmers;

[0034] 4. The trenching and fertilizing machine is driven by the traction of the tractor, which can realize the one-time operation of trenching, fertilizing and backfilling of soil, reducing the tediousness of manual operation. One person and one vehicle can complete the whole operation process, thereby improving the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the backfilling mechanism of Example 1 of the utility model;

[0036] Figure 2 It is a schematic diagram of the overall structure of Embodiment 2 of the present utility model;

[0037] Figure 3 It is a top view of the overall structure of Example 2 of the utility model;

[0038] Figure 4 It is a cross-sectional view of the overall structure of Embodiment 2 of the present utility model in the front view direction;

[0039] Figure 5 It is a cross-sectional view of the overall structure of Embodiment 2 of the present utility model from the side;

[0040] Figure 6 It is a structural schematic diagram of the ditching mechanism of Example 2 of the utility model;

[0041] Figure 7 It is a schematic diagram of the positional relationship among the trenching mechanism, the backfilling mechanism and the discharge port of Example 2 of the utility model.

[0042] Figure numerals: 1, backfill frame; 2, connecting frame; 3, soil cover plate; 4, pressure assembly; 201, hinged rod; 202, connecting rod; 41, adjusting rod; 42, spring; 9, hinged head; 10, frame; 11, fertilizer box; 12, feed pipe; 13, auger; 14, discharge port; 15, trenching mechanism; 16, ground wheel; 17, transmission mechanism; 18, hanging point; 19, discharge port; 20, transmission shaft; 21, wheel axle; 171, large sprocket; 172, small sprocket; 173, chain ; 151, fixing plate; 152, trencher; 153, U-bolt; 1521, base; 1522, trencher; 30, connecting arc plate; 101, supporting vertical rod; 102, connecting cross bar; 103, pressure cross bar; 34, first connecting ear; 35, first arc groove; 36, second connecting ear; 37, second arc groove; 38, limiting plug plate; 1511, adjusting plate; 1512, fixing sub-plate; 43, threaded hole; 44, bracket; 45, backfilling mechanism; 46, pad. DETAILED DESCRIPTION

[0043] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0044] See also Figures 1 to 7 It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportion relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0045] Example 1

[0046] See also Figure 1 The utility model provides a backfilling mechanism, comprising a backfilling frame 1, a connecting frame 2 hinged on the backfilling frame 1, and two soil covering plates 3 located on both sides of the connecting frame 2 and arranged on the connecting frame 2 in a V shape; a pressure applying component 4 capable of adjusting the downward pressure of the soil covering plate 3 is arranged between the backfilling frame 1 and the connecting frame 2;

[0047] The backfill frame 1 includes a support vertical rod 101 and a connecting cross bar 102 and a pressure cross bar 103 welded to the support vertical rod 101. The connecting cross bar 102 and the pressure cross bar 103 are relatively fixed on two side surfaces of the support vertical rod 101; the connecting cross bar 102 and the pressure cross bar 103 are both arranged vertically with the support vertical rod 101;

[0048] The connecting frame 2 includes an articulated rod 201 hinged at the bottom of the supporting vertical rod 101 and a connecting rod 202 adjustably mounted on the articulated rod 201; the connecting rod 202 is vertically arranged with the articulated rod 201; two first connecting ears 34 are welded at the middle of the connecting rod 202, the first connecting ears 34 are vertically arranged on the connecting rod 202, and the two first connecting ears 34 are both provided with a first arc groove 35; a first mounting hole is provided on the side wall of the articulated rod 201 away from one end of the supporting vertical rod 101, the articulated rod 201 is located between the two first connecting ears 34, the first mounting hole is matched with the first arc groove 35, and the connecting rod 202 and the articulated rod 201 are fixed together by bolts; wherein the mounting position of the first arc groove 35 and the first fixing hole can be adjusted, so as to adjust the angle between the end face of the connecting rod 202 and the ground;

[0049] The two covering plates 3 are adjustably mounted at the two ends of the connecting rod 202; second mounting holes are provided on the sides of the connecting rod 202 near the two ends, and second connecting ears 36 are provided in the centers of the two covering plates 3, and second arc grooves 37 are provided on the two second connecting ears 36, and the two second connecting ears 36 are respectively attached to the connecting rod 202, and the second mounting holes cooperate with the second arc grooves 37 and the covering plates 3 and the connecting rod 202 are fixed together by bolts; wherein the installation positions of the second arc grooves 37 and the second fixing holes can be adjusted, and the working angles of the covering plates 3 can be changed, so as to realize free control of the soil backfilling amount by the covering plates 3; wherein, the covering plate 3 and the second connecting ears 36 can be fixedly connected or the covering plate 3 can be rotatably connected to the second connecting ears 36. In this embodiment, the covering plate 3 is preferably rotatably connected to the second connecting ears 36.

[0050] The pressure assembly 4 includes an adjusting rod 41 and a spring 42; one end of the adjusting rod 41 is hinged to the hinge rod 201 through the hinge joint 9, and the other end of the adjusting rod 41 is movably connected to the pressure cross bar 103, and the spring 42 is sleeved on the adjusting rod 41, and the spring 42 is restricted between the hinge joint 9 and the backfill frame 1.

[0051] Example 2

[0052] See also Figures 1 to 7 The utility model also provides an orchard trenching fertilizer spreading machine, comprising a frame 10, a fertilizer box 11 arranged on the frame 10, a feeding pipe 12 connected to the fertilizer box 11, and an auger 13 rotatably connected to the feeding pipe 12; a discharge port 14 is arranged on the feeding pipe 12;

[0053] Two coaxially arranged feed pipes 12 are welded on the frame 10, and the two feed pipes 12 are both rotatably connected with an auger 13, and the two auger 13 are coaxial and connected through a transmission shaft 20; the fertilizer box 11 is a double funnel structure, and the fertilizer box 11 is installed on the feed pipe 12 through a connecting plate bolt; two feed outlets 19 are respectively connected to the two feed pipes 12 at the bottom of the fertilizer box 11; the double funnel structure connects the two feed pipes 12, so that the single-side fertilization and soil covering operation of two rows of fruit trees can be completed at one time;

[0054] In this embodiment, two independent limit plates 38 are provided at the two feeding ports 19. The limit plates 38 are movably connected to the fertilizer box 11. The distance between the two limit plates is adjustable, so that the amount of fertilizer to be fed can be adjusted.

[0055] The two conveying pipes 12 are both provided with a trenching mechanism 15 and a backfilling mechanism 45 as described above at one end away from the fertilizer box 11. The trenching mechanism 15 is located in front of the backfilling mechanism 45, and the discharge port 14 is located between the trenching mechanism 15 and the backfilling mechanism 45.

[0056] The trenching mechanism 15 includes a fixing plate 151, a trenching device 152 mounted on the fixing plate 151, and a U-shaped bolt 153 sleeved on the conveying pipe and fixedly connected to the fixing plate 151; a backing plate 46 is provided between the fixing plate 151 and the conveying pipe;

[0057] The trencher 152 is a J-shaped structure, and includes a base 1521 connected to the fixing plate 151 and two trenching pieces 1522 welded and fixed to the base 1521, and the two trenching pieces 1522 are fixedly connected in a V shape; the discharge port 14 is located between the two trenching pieces 1522;

[0058] The fixed plate 151 includes an adjusting plate 1511 and a fixed sub-plate 1512. The adjusting plate 1511 is provided with a groove. The adjusting plate 1511 cooperates with the fixed sub-plate 1512 to form a receiving groove for accommodating the base 1521. A threaded hole 43 connected to the receiving groove is opened on the adjusting plate 1511. A limiting bolt with an end abutting against the side wall of the base 1521 is engaged in the threaded hole 43, thereby fixing the furrow opener 152 on the fixed plate 151; the height of the adjusting base 1521 fixed in the receiving groove can realize the free adjustment of the furrow depth to meet the depth requirements of different types of fertilizers.

[0059] The two trenching pieces 1522 are fixedly connected in a V shape to ensure the fluidity of the soil discharged from the trench and the forming effect of the trench; and the discharge port 14 is located between the two trenching pieces 1522. The trenching pieces 1522 can limit the fertilizer from spilling, ensuring that the fertilizer can easily reach the ideal position during the operation.

[0060] A connecting arc plate 30 is integrally formed on the connecting cross bar 102 away from one end of the supporting vertical bar 101, and the U-shaped bolt 153 fixes the connecting arc plate 30 on the conveying pipe; thereby, the U-shaped bolt 153 cooperates with the fixing plate 151 to fix the furrow opener 152 and the backfill mechanism 45 on the conveying pipe.

[0061] The frame 10 is rotatably connected to a ground wheel 16, and the ground wheel 16 is connected to the auger 13 via a transmission mechanism 17;

[0062] Two ground wheels 16 are rotatably connected to the bottom of the frame 10, and the two ground wheels 16 are connected by an axle 21. The transmission mechanism 17 includes sprockets respectively arranged on the axle 21 and the transmission shaft 20, and a chain 173 sleeved on the two sprockets; generally, the speed of the tractor in operation is slow, so the two sprockets are a large sprocket 171 fixed at the middle position of the axle 21 and a small sprocket 172 fixed at the middle position of the transmission shaft 20; the large sprocket 171 and the small sprocket 172 cooperate to match the rated speed, and the use of the reinforced double chain 173 ensures the uniformity of fertilizer spreading at any operating speed of the tractor, further improving the reliability of the machine operation.

[0063] A hanger 44 is welded to the front of the frame 10, a hanger point 18 is set on the top of the hanger 44, and the frame 10 on both sides of the hanger 44 is provided with hanger points 18. The three hanger points 18 are distributed in a triangle. The frame 10 is connected to the tractor through the three hanger points 18, thereby ensuring that the trenching fertilizer spreader can run more smoothly under the traction of the tractor.

[0064] A brief description of the use process: first, connect the trenching fertilizer spreader to the tractor; under the traction of the tractor, the ground wheel 16 rotates, and the driving force of the ground wheel 16 is transmitted to the auger 13 through the transmission mechanism 17; the fertilizer in the fertilizer box 11 enters the conveying pipe through the discharge port 19 under the action of gravity, and the auger 13 drives to transport the fertilizer in the conveying pipe to the end, and when the fertilizer is transported to the discharge port 14, the fertilizer falls under the action of gravity; while the auger 13 is transporting the fertilizer, the trencher 152 trenches on the land, so that the fertilizer falls into the soil where the trench has been trenched; while the trencher 152 trenches, the soil covering plate 3 rotates during the forward process to collect the soil on both sides outside the trench and backfill it into the trench, thereby realizing the one-time operation of trenching, fertilizing, and soil backfilling.

[0065] In summary, the utility model can realize the one-time operation of soil trenching, fertilization and soil backfilling, reduce the tediousness of manual operation, and a single person and a single vehicle can complete the entire operation process, thereby improving the operation efficiency. Therefore, the utility model effectively overcomes various shortcomings of the prior art and has a high industrial utilization value.

[0066] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A backfilling mechanism, characterized in that: It comprises a backfill frame (1), a connecting frame (2) hinged to the backfill frame (1), and two soil covering plates (3) located on both sides of the connecting frame (2) and arranged in a V-shape on the connecting frame (2); A pressure component (4) capable of adjusting the downward pressure of the soil covering plate (3) is provided between the backfill frame (1) and the connecting frame (2); The connecting frame (2) comprises a hinged rod (201) hinged on the backfill frame (1) and a connecting rod (202) adjustably mounted on the hinged rod (201); the two covering plates (3) are adjustably mounted on both ends of the connecting rod (202); The pressure-applying assembly (4) comprises an adjusting rod (41) and a spring (42); one end of the adjusting rod (41) is hinged to the hinge rod (201) via a hinge joint (9), and the other end of the adjusting rod (41) is movably connected to the backfilling frame (1); the spring (42) is sleeved on the adjusting rod (41), and the spring (42) is confined between the hinge joint (9) and the backfilling frame (1).

2. Orchard ditching and fertilizing machine, characterized by: The invention comprises a vehicle frame (10), a fertilizer box (11) arranged on the vehicle frame (10), a feed pipe (12) connected to the fertilizer box (11), and an auger (13) rotatably connected to the feed pipe (12); the feed pipe (12) is provided with a discharge port (14); The conveying pipe (12) is provided with a trenching mechanism (15) and the backfilling mechanism described in any one of the above claims 1, the trenching mechanism (15) is located in front of the backfilling mechanism, and the discharge port (14) is located between the trenching mechanism (15) and the backfilling mechanism; The frame (10) is rotatably connected to a ground wheel (16), and the ground wheel (16) is connected to the auger (13) via a transmission mechanism (17); The vehicle frame (10) is provided with a hanging point (18) connected to a tractor.

3. The orchard trenching and fertilizing machine according to claim 2, characterized in that: The fertilizer box (11) is a double funnel structure, and the bottom of the fertilizer box (11) is provided with two feeding ports (19) respectively connected to feeding pipes (12); an auger (13) is rotatably connected in each of the two feeding pipes (12), and the two augers (13) are coaxially arranged and connected via a transmission shaft (20).

4. The orchard trenching and fertilizing machine according to claim 3, characterized in that: The frame (10) is rotatably connected to two ground wheels (16), the two ground wheels (16) are connected via a wheel axle (21), and the transmission mechanism (17) comprises sprockets respectively arranged on the wheel axle (21) and the transmission shaft (20), and a chain (173) sleeved on the two sprockets.

5. The orchard trenching and fertilizing machine according to claim 2, characterized in that: The furrowing mechanism (15) comprises a fixing plate (151), a furrowing device (152) mounted on the fixing plate (151), and a U-shaped bolt (153) sleeved on the conveying pipe and fixedly connected to the fixing plate (151).

6. The orchard trenching and fertilizing machine according to claim 5, characterized in that: The furrow opener (152) is of a J-shaped structure; the furrow opener (152) comprises a base (1521) connected to the fixed plate (151) and two furrow opening pieces (1522) fixedly connected to the base (1521), the two furrow opening pieces (1522) being fixedly connected in a V-shape; the discharge port (14) is located between the two furrow opening pieces (1522).

7. The orchard trenching and fertilizing machine according to claim 6, characterized in that: The backfill frame (1) is provided with a connecting arc plate (30) which is fixedly mounted on the conveying pipe by means of U-shaped bolts (153).

8. The orchard trenching and fertilizing machine according to claim 2, characterized in that: The front part of the vehicle frame (10) is provided with three hanging points (18); the three hanging points (18) are distributed in a triangle.

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