Movable pit digging device for seedling planting

Abstract

The invention relates to the technical field of agricultural machinery, in particular to a movable pit digging device for seedling planting. The invention provides the movable pit digging device for seedling planting, which can discharge soil on the spiral drill rod, prevent the soil from flowing back and improve the pit digging efficiency and quality. A movable pit digging device for nursery stock planting comprises a crawler, bolts, a connecting frame, a pit digging mechanism and a soil retaining mechanism, the connecting frame is detachably connected to the upper side of the crawler through a plurality of bolts, the pit digging mechanism capable of digging pits in the ground is arranged on the connecting frame, and the soil retaining mechanism capable of retaining soil is arranged on the pit digging mechanism. When the spiral drill rod rotates downwards to dig holes, a baffle is always attached to the spiral drill rod through the acting force of a second spring, soil on the spiral drill rod is discharged to the outer side of a baffle frame through the baffle, and the effects that the soil on the spiral drill rod can be discharged, soil backflow is avoided, and the hole digging efficiency and quality are improved are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural machinery, and in particular to a mobile pit digging device for planting seedlings. Background Art

[0002] In the process of seedling planting, digging holes is a labor-intensive and time-consuming task. The mobile seedling planting pit digging device is a device specially used for digging tree pits during the seedling planting process. This type of device can greatly reduce the intensity of manual labor and improve work efficiency. It is suitable for large-scale greening projects, garden construction and other scenarios.

[0003] The existing mobile seedling planting hole digging device is to move the mobile vehicle to the seedling planting position, move the spiral drill rod downward and rotate to drill holes in the ground. When the spiral drill rod rotates and drills into the soil, the soil will be brought to the top of the ground by the spiral blades. However, some of the soil may slide back into the dug hole along the spiral blades, which affects the quality and efficiency of the hole digging.

[0004] Therefore, a mobile seedling planting digging device has been developed that can discharge the soil on the auger rod, avoid soil backflow, and improve the digging efficiency and quality. Summary of the invention

[0005] In order to overcome the disadvantage of the existing mobile pit digging device for planting seedlings, that part of the soil may slide along the spiral blades back into the already dug pit, resulting in affecting the quality and efficiency of pit digging, the present invention provides a mobile pit digging device for planting seedlings, which can discharge the soil on the spiral drill rod, avoid soil backflow, and improve the efficiency and quality of pit digging.

[0006] The technical solution of the present invention is: a mobile hole-digging device for planting seedlings, including a tracked vehicle, bolts, a connecting frame, a hole-digging mechanism and a soil retaining mechanism. The upper side of the tracked vehicle is detachably connected to the connecting frame by multiple bolts, the connecting frame is provided with a hole-digging mechanism capable of digging holes on the ground, and the hole-digging mechanism is provided with a soil retaining mechanism capable of retaining soil.

[0007] As a preferred technical solution of the present invention, the digging mechanism includes a rotating frame, a first motor, a transmission assembly, a support frame, a rodless cylinder, a sliding frame, a fixed block, a second motor and a spiral drill rod. The rotating frame is rotatably connected to the connecting frame, the first motor is connected to the front of the crawler vehicle, and a transmission assembly is provided between the first motor and the rotating frame. The upper front side of the rotating frame is connected to the support frame, the front side of the support frame is connected to the rodless cylinder, the sliding frame is connected to the slider of the rodless cylinder, the lower front side of the sliding frame is rotatably connected to the fixed block, the second motor is connected to the fixed block, and the spiral drill rod is connected to the output shaft of the second motor. Start the first motor, rotate the rotating frame through the transmission assembly, drive the support frame to rotate, adjust the spiral drill rod to above the digging position, then start the rodless cylinder to move the sliding frame downward, and then start the second motor on the fixed block to rotate the spiral drill rod, so that the spiral drill rod moves downward and rotates to dig a hole on the ground.

[0008] As a preferred technical solution of the present invention, the transmission assembly includes a gear and a gear ring, the upper side of the first motor output shaft is connected to the gear, the lower part of the rotating frame is connected to the gear ring, and the gear ring is meshed with the gear.

[0009] As a preferred technical solution of the present invention, the soil retaining mechanism includes a fixed frame, a baffle frame, a first spring, a connecting rod, a baffle plate and a second spring. The fixed block is connected to the lower side of the fixed frame, the fixed frame is slidably connected to the baffle frame, a plurality of first springs are connected between the baffle frame and the fixed frame, the connecting rod is connected to the front side of the lower part of the baffle frame, the connecting rod is slidably connected to the baffle plate, and the second spring is connected between the baffle plate and the connecting rod. When the fixed block moves downward, the baffle frame moves downward and contacts the ground, and then the fixed frame moves downward relative to the baffle frame. The first spring is stretched, so that the auger rod drills into the soil. When the auger rod rotates downward to dig a hole, the baffle plate is always in contact with the auger rod through the action of the second spring, so that the baffle plate discharges the soil on the auger rod to the outside of the baffle frame.

[0010] As a preferred technical solution of the present invention, a plurality of fixing pins are provided on the lower side of the retaining frame.

[0011] As a preferred technical solution of the present invention, it also includes an adjusting mechanism, which includes a first connecting member, a first rotating block, an electric push rod, a second connecting member and a second rotating block. The first connecting member is connected to the front side of the sliding frame, the first connecting member is rotatably connected to the first rotating block, the electric push rod is connected to the lower side of the first rotating block, the second connecting member is connected to the front side of the fixed block, the second connecting member is rotatably connected to the second rotating block, the telescopic end of the electric push rod is connected to the second rotating block, and when it is necessary to dig holes on the slope to plant trees, the crawler vehicle is moved to the slope, and then according to the requirements for planting seedlings on the slope, the electric push rod is started to drive the second rotating block and the second connecting member to move, so that the fixed block rotates, which drives the spiral drill rod to rotate.

[0012] As a preferred technical solution of the present invention, it also includes a fertilizing mechanism, which includes a fixing part, a storage box, a feeding pipe, a regulating valve, a three-way pipe and a fertilizing rack. The left and right sides of the rotating rack are connected with fixing parts, and the storage box is connected to the fixing parts. The front upper side of the storage box is connected with a feeding pipe. A regulating valve is provided on the lower rear side of the rodless cylinder, and the feeding pipes are connected to the regulating valve. The lower rear side of the rodless cylinder is connected with a three-way pipe, which is located below the regulating valve, and the three-way pipe is connected to the regulating valve. The lower part of the baffle frame is connected with a fertilizing rack, and the three-way pipe is connected to the fertilizing rack. The fertilizer needed is stored in the storage box. When digging a pit, the valve on the regulating valve is rotated according to the fertilization demand, so that the fertilizer in the corresponding storage box flows from the feeding pipe into the three-way pipe, and then is sprayed from the fertilizing rack to the soil outside the baffle frame.

[0013] As a preferred technical solution of the present invention, a plurality of nozzles are provided on the fertilization frame.

[0014] As a preferred technical solution of the present invention, it also includes a prompt mechanism, which includes a guide rail, a sliding block, an alarm and a top block. The guide rail is connected to the right side of the lower part of the rodless cylinder, and the sliding block is connected to the guide rail through a damping sliding type. The sliding block is connected to the alarm, and the top block is connected to the left side of the alarm. According to the requirements of digging pits, the position of the sliding block on the guide rail is adjusted by sliding. After the sliding frame moves downward to the top block, the top block is squeezed to make the alarm sound an alarm.

[0015] As a preferred technical solution of the present invention, it also includes a storage mechanism, which includes a support plate and a storage frame. The support plate is connected to the rear side of the connecting frame, and the storage frame is connected to the support plate. The saplings are placed in the storage frame on the support plate.

[0016] Beneficial effects: 1. When the auger rod of the present invention rotates downward to dig a hole, the baffle plate is always in close contact with the auger rod through the action force of the second spring, so that the baffle plate discharges the soil on the auger rod to the outside of the baffle frame, thereby achieving the effect of being able to discharge the soil on the auger rod, avoiding soil backflow, and improving the efficiency and quality of digging holes.

[0017] 2. When it is necessary to dig a hole on the slope and plant trees, the present invention moves the crawler vehicle to the slope, and then starts the electric push rod according to the requirements of planting seedlings on the slope, drives the second rotating block and the second connecting member to move, so that the fixed block rotates, drives the auger rod to rotate, and achieves the effect of being able to adjust the angle of the auger rod to adapt to the needs of digging holes in different terrains.

[0018] 3. The present invention stores the fertilizers needed in a storage box. When digging a hole, the regulating valve is turned according to the fertilization demand, so that the fertilizer in the corresponding storage box flows from the feed pipe into the three-way pipe, and then is sprayed from the nozzle on the fertilizer rack to the soil outside the retaining frame, thereby achieving the effect of fertilizing the excavated soil and improving the efficiency of seedling planting.

[0019] 4. The present invention adjusts the position of the sliding block on the guide rail according to the digging requirements. After the sliding frame moves downward to the top block, the top block is squeezed to make the alarm sound, thereby achieving the effect of being able to prompt the digging depth of the spiral drill rod and improving the digging quality.

[0020] 5. The present invention achieves the effect of being able to store saplings and facilitate carrying to the planting area by placing the saplings in the storage frame on the support plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 It is a partial three-dimensional structural schematic diagram of the pit digging mechanism of the present invention.

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of part of the earth retaining mechanism of the present invention.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the adjustment mechanism of the present invention.

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of the first part of the fertilizing mechanism of the present invention.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the second part of the fertilizing mechanism of the present invention.

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the prompt mechanism of the present invention.

[0028] Figure 8 It is a schematic diagram of a partial three-dimensional structure of the storage mechanism of the present invention.

[0029] The markings in the figure are: 1-crawler, 2-bolt, 3-connecting frame, 4-digging mechanism, 41-rotating frame, 42-first motor, 43-transmission assembly, 44-support frame, 45-rodless cylinder, 46-sliding frame, 47-fixed block, 48-second motor, 49-auger rod, 5-soil retaining mechanism, 51-fixed frame, 52-blocking frame, 53-first spring, 54-connecting rod, 55-blocking plate, 56-second spring, 6-adjusting machine Structure, 61-first connecting piece, 62-first rotating block, 63-electric push rod, 64-second connecting piece, 65-second rotating block, 7-fertilization mechanism, 71-fixing piece, 72-storage box, 73-feeding pipe, 731-regulating valve, 732-tee pipe, 74-fertilization rack, 8-prompt mechanism, 81-guide rail, 82-sliding block, 83-alarm, 84-top block, 9-storage mechanism, 91-support plate, 92-storage frame. DETAILED DESCRIPTION

[0030] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

[0031] A mobile seedling planting pit digging device, such as Figure 1-Figure 8 As shown, it includes a crawler vehicle 1, bolts 2, a connecting frame 3, a pit digging mechanism 4 and a soil retaining mechanism 5. The upper side of the crawler vehicle 1 is detachably connected to the connecting frame 3 by four bolts 2, the connecting frame 3 is provided with a pit digging mechanism 4, and the pit digging mechanism 4 is provided with a soil retaining mechanism 5.

[0032] like Figure 1 and Figure 2 As shown, the digging mechanism 4 includes a rotating frame 41, a first motor 42, a transmission assembly 43, a support frame 44, a rodless cylinder 45, a sliding frame 46, a fixed block 47, a second motor 48 and a spiral drill rod 49. The rotating frame 41 is rotatably connected to the connecting frame 3, the first motor 42 is connected to the front of the crawler vehicle 1, and a transmission assembly 43 is provided between the first motor 42 and the rotating frame 41. The transmission assembly 43 includes a gear and a ring gear. The upper side of the output shaft of the first motor 42 is connected to the gear, the lower part of the rotating frame 41 is connected to the ring gear, and the ring gear is meshed with the gear. The upper front side of the rotating frame 41 is connected to the support frame 44, the front side of the support frame 44 is connected to the rodless cylinder 45, the slider of the rodless cylinder 45 is connected to the sliding frame 46, the lower front side of the sliding frame 46 is rotatably connected to the fixed block 47, the fixed block 47 is connected to the second motor 48, and the output shaft of the second motor 48 is connected to the spiral drill rod 49.

[0033] like Figure 1 and Figure 3 As shown, the retaining mechanism 5 includes a fixed frame 51, a retaining frame 52, a first spring 53, a connecting rod 54, a baffle 55 and a second spring 56. The fixed block 47 is connected to the lower side of the fixed frame 47, the retaining frame 52 is slidably connected to the fixed frame 51, four first springs 53 are connected between the retaining frame 52 and the fixed frame 51, the lower front side of the retaining frame 52 is connected to the connecting rod 54, the baffle 55 is slidably connected to the connecting rod 54, eight fixing nails are provided on the lower side of the retaining frame 52 for easy fixing to the ground, and the second spring 56 is connected between the baffle 55 and the connecting rod 54.

[0034] When using the present invention, first control the crawler vehicle 1 to move to the seedling planting area, then start the first motor 42, and through the meshing movement of the gear ring and the gear in the transmission assembly 43, the rotating frame 41 rotates, driving the support frame 44 to rotate, and adjusting the auger rod 49 to above the digging position, then start the rodless cylinder 45 to move the sliding frame 46 downward, and then start the second motor 48 on the fixed block 47 to rotate the auger rod 49, so that the auger rod 49 moves downward and rotates to dig a hole on the ground. After the digging is completed, the auger rod 49 moves upward to reset, and while the fixed block 47 moves downward, the blocking frame 52 It moves downward and contacts the ground, and the fixing nails are inserted into the soil. Then the fixing frame 51 moves downward relative to the baffle frame 52, and the first spring 53 is stretched, so that the auger rod 49 drills into the soil. When the auger rod 49 rotates downward to dig a hole, the baffle plate 55 is always in contact with the auger rod 49 through the force of the second spring 56, so that the baffle plate 55 discharges the soil on the auger rod 49 to the outside of the baffle frame 52, thereby discharging the soil on the auger rod 49, avoiding soil backflow, and improving the efficiency and quality of digging a hole. After the auger rod 49 moves upward and resets, the first spring 53 rebounds, so that the baffle frame 52 is reset.

[0035] like Figure 1 and Figure 4 As shown, it also includes an adjusting mechanism 6, which includes a first connecting member 61, a first rotating block 62, an electric push rod 63, a second connecting member 64 and a second rotating block 65. The first connecting member 61 is connected to the front side of the sliding frame 46, the first connecting member 61 is rotatably connected to the first rotating block 62, the electric push rod 63 is connected to the lower side of the first rotating block 62, the second connecting member 64 is connected to the front side of the fixed block 47, the second connecting member 64 is rotatably connected to the second rotating block 65, and the telescopic end of the electric push rod 63 is connected to the second rotating block 65.

[0036] By using the adjustment mechanism 6 of the device, the angle of the auger rod 49 can be adjusted. When it is necessary to dig a hole on the slope to plant trees, the crawler vehicle 1 is moved to the slope, and then according to the requirements for planting seedlings on the slope, the electric push rod 63 is started to drive the second rotating block 65 and the second connecting member 64 to move, so that the fixed block 47 rotates, driving the auger rod 49 to rotate, thereby playing a role in adjusting the angle of the auger rod 49 to adapt to the needs of digging holes in different terrains.

[0037] like Figure 1 , Figure 5 and Figure 6As shown, it also includes a fertilizing mechanism 7, which includes a fixing part 71, a storage box 72, a feeding pipe 73, a regulating valve 731, a three-way pipe 732 and a fertilizing rack 74. The left and right sides of the rotating frame 41 are connected to the fixing parts 71, the storage box 72 is connected to the fixing parts 71, the front upper side of the storage box 72 is connected to the feeding pipe 73, the lower rear side of the rodless cylinder 45 is provided with a regulating valve 731, the feeding pipe 73 is connected to the regulating valve 731, the lower rear side of the rodless cylinder 45 is connected with a three-way pipe 732, the three-way pipe 732 is located below the regulating valve 731, the three-way pipe 732 is connected to the regulating valve 731, the lower part of the retaining frame 52 is connected to the fertilizing rack 74, the fertilizing rack 74 is provided with eight nozzles for evenly spraying fertilizer, and the three-way pipe 732 is connected to the fertilizing rack 74.

[0038] By using the fertilizing mechanism 7 of the present device, the excavated soil can be fertilized and the required fertilizer can be stored in the storage box 72. When digging a hole, according to the fertilization demand, the valve on the regulating valve 731 is turned to make the fertilizer in the corresponding storage box 72 flow from the feeding pipe 73 into the three-way pipe 732, and then sprayed from the nozzle on the fertilizing frame 74 to the soil outside the retaining frame 52, thereby fertilizing the excavated soil and improving the efficiency of seedling planting.

[0039] like Figure 1 and Figure 7 As shown, a prompt mechanism 8 is also included, which includes a guide rail 81, a sliding block 82, an alarm 83 and a top block 84. The guide rail 81 is connected to the right side of the lower part of the rodless cylinder 45, and the sliding block 82 is connected to the guide rail 81 through a damping sliding type. The sliding block 82 is connected to the alarm 83, and the top block 84 is connected to the left side of the alarm 83.

[0040] The prompt mechanism 8 of the device can be used to prompt the digging depth. According to the digging requirements, the position of the sliding block 82 on the guide rail 81 is slidably adjusted. After the sliding frame 46 moves downward to the top block 84, the top block 84 is squeezed, causing the alarm 83 to sound an alarm, thereby prompting the auger rod 49 to dig the depth and improving the quality of digging.

[0041] like Figure 1 and Figure 8 As shown, a storage mechanism 9 is also included. The storage mechanism 9 includes a support plate 91 and a storage frame 92. The support plate 91 is connected to the rear side of the connecting frame 3, and the storage frame 92 is connected to the support plate 91.

[0042] The storage mechanism 9 of the device can be used to store saplings, and the saplings are placed in the storage frame 92 on the support plate 91, so that the saplings can be stored and are easy to carry to the planting area.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A mobile seedling planting pit digging device, characterized in that: The invention comprises a crawler vehicle (1), bolts (2), a connecting frame (3), a pit digging mechanism (4) and a soil retaining mechanism (5); the upper side of the crawler vehicle (1) is detachably connected to the connecting frame (3) via a plurality of bolts (2); the connecting frame (3) is provided with a pit digging mechanism (4) capable of digging a pit on the ground; and the pit digging mechanism (4) is provided with a soil retaining mechanism (5) capable of retaining soil.

2. A mobile seedling planting pit digging device as claimed in claim 1, characterized in that: The digging mechanism (4) comprises a rotating frame (41), a first motor (42), a transmission assembly (43), a support frame (44), a rodless cylinder (45), a sliding frame (46), a fixing block (47), a second motor (48) and an auger rod (49). The rotating frame (41) is rotatably connected to the connecting frame (3). The front of the crawler vehicle (1) is connected to A first motor (42) is provided, a transmission assembly (43) is provided between the first motor (42) and the rotating frame (41), a support frame (44) is connected to the upper front side of the rotating frame (41), a rodless cylinder (45) is connected to the front side of the support frame (44), a sliding frame (46) is connected to the slider of the rodless cylinder (45), a fixed block (47) is rotatably connected to the lower front side of the sliding frame (46), a second motor (48) is connected to the fixed block (47), and an output shaft of the second motor (48) is provided. A screw drill rod (49) is connected to the upper part, and the first motor (42) is started to rotate the rotating frame (41) through the transmission component (43), driving the support frame (44) to rotate, and adjusting the screw drill rod (49) to the upper part of the hole digging position, and then starting the rodless cylinder (45) to move the sliding frame (46) downward, and then starting the second motor (48) on the fixed block (47) to rotate the screw drill rod (49), so that the screw drill rod (49) moves downward and rotates to dig a hole on the ground.

3. A mobile seedling planting pit digging device as claimed in claim 2, characterized in that: The transmission assembly (43) comprises a gear and a gear ring. The upper side of the output shaft of the first motor (42) is connected to the gear, and the lower part of the rotating frame (41) is connected to the gear ring. The gear ring is meshed with the gear.

4. A mobile seedling planting pit digging device as claimed in claim 2, characterized in that: The soil retaining mechanism (5) comprises a fixing frame (51), a retaining frame (52), a first spring (53), a connecting rod (54), a retaining plate (55) and a second spring (56); the fixing frame (51) is connected to the lower side of the fixing block (47); the retaining frame (52) is slidably connected to the fixing frame (51); a plurality of first springs (53) are connected between the retaining frame (52) and the fixing frame (51); the lower front side of the retaining frame (52) is connected to the connecting rod (54); the retaining plate (55) is slidably connected to the connecting rod (54); the retaining plate (55) and the connecting rod are connected to each other. A second spring (56) is connected between the fixing block (47) and the retaining frame (52). When the fixing block (47) moves downward, the retaining frame (52) moves downward to contact the ground. Then, the fixing frame (51) moves downward relative to the retaining frame (52). The first spring (53) is stretched, so that the auger rod (49) drills into the soil. When the auger rod (49) rotates downward to dig a hole, the baffle plate (55) is always in contact with the auger rod (49) through the action force of the second spring (56), so that the baffle plate (55) discharges the soil on the auger rod (49) to the outside of the retaining frame (52).

5. A mobile seedling planting pit digging device as claimed in claim 4, characterized in that: A plurality of fixing pins are arranged on the lower side of the retaining frame (52).

6. A mobile seedling planting pit digging device as claimed in claim 4, characterized in that: The invention also comprises an adjusting mechanism (6), which comprises a first connecting member (61), a first rotating block (62), an electric push rod (63), a second connecting member (64) and a second rotating block (65). The front side of the sliding frame (46) is connected with the first connecting member (61), the first rotating block (62) is rotatably connected to the first connecting member (61), the lower side of the first rotating block (62) is connected with the electric push rod (63), the front side of the fixed block (47) is connected with the second connecting member (64), the second rotating block (65) is rotatably connected to the second connecting member (64), and the telescopic end of the electric push rod (63) is connected to the second rotating block (65). When it is necessary to dig a hole on the slope to plant trees, the crawler vehicle (1) is moved to the slope, and then according to the requirements of planting seedlings on the slope, the electric push rod (63) is started to drive the second rotating block (65) and the second connecting member (64) to move, so that the fixed block (47) rotates, and the spiral drill rod (49) is driven to rotate.

7. A mobile seedling planting pit digging device as claimed in claim 6, characterized in that: The invention also comprises a fertilizer mechanism (7), which comprises a fixing member (71), a material storage box (72), a feeding pipe (73), a regulating valve (731), a three-way pipe (732) and a fertilizer frame (74). The left and right sides of the rotating frame (41) are connected to the fixing member (71), the material storage box (72) is connected to the fixing member (71), the front upper side of the material storage box (72) is connected to the feeding pipe (73), the lower rear side of the rodless cylinder (45) is provided with a regulating valve (731), the feeding pipe (73) is connected to the regulating valve (731), the lower rear side of the rodless cylinder (45) is connected to the A three-way pipe (732) is connected, the three-way pipe (732) is located below the regulating valve (731), the three-way pipe (732) is connected to the regulating valve (731), the lower part of the retaining frame (52) is connected to a fertilizer rack (74), the three-way pipe (732) is connected to the fertilizer rack (74), and the fertilizer required is stored in the storage box (72). When digging a pit, according to the fertilization demand, the valve on the regulating valve (731) is turned to make the fertilizer in the corresponding storage box (72) flow from the feeding pipe (73) into the three-way pipe (732), and then sprayed from the fertilizer rack (74) to the soil outside the retaining frame (52).

8. A mobile seedling planting pit digging device as claimed in claim 7, characterized in that: A plurality of spray nozzles are arranged on the fertilizing frame (74).

9. A mobile seedling planting pit digging device as claimed in claim 7, characterized in that: The invention also comprises a prompting mechanism (8), which comprises a guide rail (81), a sliding block (82), an alarm (83) and a top block (84). The right side of the lower part of the rodless cylinder (45) is connected with the guide rail (81), the sliding block (82) is connected with the guide rail (81) by a damping sliding manner, the sliding block (82) is connected with the alarm (83), and the left side of the alarm (83) is connected with the top block (84). According to the digging requirements, the position of the sliding block (82) on the guide rail (81) is adjusted by sliding, and after the sliding frame (46) moves downward to the top block (84), the top block (84) is squeezed, so that the alarm (83) sounds an alarm.

10. A mobile seedling planting pit digging device as claimed in claim 9, characterized in that: The invention also comprises a storage mechanism (9), the storage mechanism (9) comprising a support plate (91) and a storage frame (92), the support plate (91) is connected to the rear side of the connecting frame (3), the storage frame (92) is connected to the support plate (91), and the sapling is placed in the storage frame (92) on the support plate (91).

Images