Hole puncher for well cellar

Abstract

The utility model discloses a well cellar puncher, which comprises a drilling unit, which comprises a bracket, a handheld rod arranged at the top of the bracket, a drill bit arranged at the bottom of the bracket, a flexible shaft connected with the drill bit, an engine connected with the flexible shaft, and a flexible shaft sleeve arranged at the joint of the drill bit and the flexible shaft; the telescopic unit comprises a shell installed on the support, a rack movably installed on the shell, a gear meshed with the rack, a motor connected with the gear and a membrane breaking ring connected with one end of the rack, and the membrane breaking ring is arranged outside the drill bit in a surrounding mode. According to the puncher, a film can be broken first and then punching can be conducted, part of downward pressing force can be provided, then the drilling operation can be completed without large pressure, meanwhile, the downward pressing speed is matched with the relative speed of the rack and the gear, the drilling operation is standardized, and the forming quality can be improved to a certain degree.

Description

Technical Field

[0001] This utility model relates to a well and cellar drilling tool, belonging to the field of well and cellar drilling technology for transplantation. Background Technology

[0002] Well-cellar transplanting is a method of transplanting flue-cured tobacco. It involves digging wells on ridges covered with mulch. The well opening is circular, the upper part of the well is cylindrical, and the lower part is conical. This method allows for timely early planting of tobacco leaves and deep planting on high ridges. It provides a suitable temperature and moisture environment for the growth of tobacco seedlings and has the advantages of cold resistance, heat preservation, and promoting early and rapid growth of tobacco seedlings. It is a cultivation method that makes tobacco seedlings grow strong and healthy.

[0003] Existing literature (CN203814152U) discloses a transplanting well hole drilling machine, a planting tool in the field of agricultural technology. It includes a backpack engine, handle, support rod, flexible shaft connecting sleeve, flexible shaft, and drill bit. The flexible shaft is connected to a rigid shaft within the flexible shaft connecting sleeve. The rigid shaft has a collar with a brake pin hole, and its lower end is threaded. The drill bit is conical, with a drill bit mounting hole at the center of its conical base. The drill bit is threaded to the lower end of the rigid shaft through the drill bit mounting hole. A film-breaking cover is also provided on the conical base of the drill bit. This device can simultaneously break the film during drilling. However, in practice, the applicant has found that the device still has the following problems: First, the drilling action precedes the film-breaking action, sometimes tearing the film and resulting in irregular film openings; second, drilling requires forceful downward pressure, which is laborious, and if the downward pressure speed is not properly controlled, it can affect the forming quality of the well holes to some extent. Utility Model Content

[0004] Based on the above, this utility model provides a well drilling tool to overcome the shortcomings of the prior art.

[0005] The technical solution of this utility model is: a well and cellar drilling tool, comprising:

[0006] A drilling unit includes a bracket, a hand handle disposed on the top of the bracket, a drill bit mounted on the bottom of the bracket, a flexible shaft connected to the drill bit, an engine connected to the flexible shaft, and a flexible shaft sleeve mounted at the connection between the drill bit and the flexible shaft.

[0007] The telescopic unit includes a housing mounted on a bracket, a rack movably mounted on the housing, a gear meshing with the rack, a motor connected to the gear, and a film-breaking ring connected to one end of the rack, the film-breaking ring surrounding the drill bit.

[0008] In one example, the support includes a base plate, a support column disposed on the base plate, and a top plate disposed on top of the support column; wherein the hand handle is disposed on the top plate, the flexible shaft sleeve is disposed on the base plate, and the drill bit is rotatably mounted on the bottom of the base plate.

[0009] In one example, the housing has a groove vertically mounted on the bracket and a limiting plate disposed at the top of the groove, and the rack is mounted in the groove.

[0010] In one example, the telescopic unit further includes a proximity sensor to sense the movement position of the rack; the proximity sensor is electrically connected to a controller, which is electrically connected to the motor.

[0011] In one example, the proximity sensor is a magnetic sensor, with the magnetic element of the magnetic sensor disposed on the upper outer side of the rack, and the magnetic sensing element of the magnetic sensor disposed on the limiting plate and the base plate.

[0012] In one example, the handgrip has a curved handle at the top.

[0013] In one example, the engine is a backpack engine.

[0014] The beneficial effects of this utility model are as follows: Through the telescopic unit, when drilling wells and cellars, the drill bit can be controlled by holding the hand lever. First, the drill bit is positioned on the soil film to be drilled. Then, the motor rotates, driving the rack downwards, causing the film-breaking ring to move down and cut the film. Breaking the film before drilling avoids tearing the film with the drill bit. Alternatively, the film-breaking ring can be driven to the bottom of the drill bit first, and then the drill bit is placed on the soil film, where the film-breaking ring simultaneously cuts and breaks the film. After completion, the motor reverses and rotates at a predetermined speed. Simultaneously, the hand lever is appropriately pressed down, causing the drill bit to gradually move down to drill the hole. Because the hand grips the hand lever and presses down, the film-breaking ring maintains its relative position. The motor receives a downward reaction force from the rack, thus providing some downward pressure. This allows the drilling operation to be completed without excessive pressure. Furthermore, the downward pressing speed matches the relative speed of the rack and gear, thereby standardizing the drilling operation and improving the forming quality to a certain extent. Attached Figure Description

[0015] Figure 1 A schematic diagram of a well drilling tool;

[0016] Figure 2 This is a schematic diagram of the bracket and housing;

[0017] Figure 3 A schematic diagram showing the housing, gears, and rack mounted on the base plate;

[0018] Figure 4 A schematic diagram of the housing, gears, and rack.

[0019] Figure 5 A schematic diagram showing the shrinkage of the membrane rupture ring at the top of the drill bit;

[0020] Figure 6This is a schematic diagram showing the rupture ring moving down to the bottom of the drill bit.

[0021] Explanation of reference numerals in the attached figures:

[0022] Drilling unit: 11 bracket, 111 base plate, 112 support column, 113 top plate, 12 hand handle, 121 curved handle, 13 drill bit, 14 flexible shaft, 15 engine, 16 flexible shaft sleeve;

[0023] Telescopic unit: 21 housing, 211 slide groove, 212 limiting plate, 22 rack, 23 gear, 24 motor, 25 rupture ring, 26 magnetic component, 27 magnetic sensitive element. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0025] Please see Figures 1 to 6 This embodiment provides a well drilling tool, which includes a drilling unit and a telescopic unit.

[0026] The drilling unit includes a bracket 11, a handheld lever 12 mounted on top of the bracket 11, a drill bit 13 mounted on the bottom of the bracket 11, a flexible shaft 14 connected to the drill bit 13, an engine 15 connected to the flexible shaft 14, and a flexible shaft sleeve 16 mounted at the connection between the drill bit 13 and the flexible shaft 14. The engine 15 can be a backpack engine. The engine 15 drives the flexible shaft 14 to rotate, which in turn drives the drill bit 13 to rotate. The drill bit 13 can be operated via the handheld lever 12, making drilling more precise.

[0027] The telescopic unit includes a housing 21 mounted on a bracket 11, a rack 22 movably mounted on the housing 21, a gear 23 meshing with the rack 22, a motor 24 connected to the gear 23, and a membrane-breaking ring 25 connected to one end of the rack 22. The membrane-breaking ring 25 surrounds the drill bit 13. The housing 21 is vertically mounted on the bracket 11. The motor 24 drives the gear 23 to rotate, which in turn drives the rack 22 to move up and down, ultimately realizing the up and down movement of the membrane-breaking ring 25.

[0028] With the telescopic unit in place, when drilling wells and cellars, the drill bit 13 can be controlled by holding the hand lever 12. First, the drill bit 13 is positioned on the soil membrane to be drilled. Then, the motor 24 rotates, driving the rack 22 downwards, causing the membrane-breaking ring 25 to move downwards and cut the membrane. This membrane-breaking before drilling avoids the drill bit 13 tearing the membrane. Alternatively, the membrane-breaking ring 25 can be driven to the bottom of the drill bit 13 first, and then the drill bit 13 is placed on the soil membrane, where the membrane-breaking ring 25 simultaneously cuts and breaks the membrane. After completion, the motor 24 reverses and rotates at a predetermined speed. Simultaneously, the hand lever 12 is appropriately pressed down, causing the drill bit 13 to gradually move downwards to drill. Because the hand grips the hand lever 12 and presses down, the membrane-breaking ring 25 maintains its relative position. The motor 24 receives a downward reaction force from the rack 22, thus providing some downward pressure. This allows the drilling operation to be completed without excessive pressure. Furthermore, the downward pressing speed matches the relative speed of the rack 22 and gear 23, thereby standardizing the drilling operation and improving the forming quality to some extent.

[0029] For ease of installation, the bracket 11 includes a base plate 111, a plurality of support columns 112 disposed on the base plate 111, and a top plate 113 disposed on the top of the support columns 112. The hand handle 12 is vertically mounted on the top and has a curved handle 121 on the upper part of the hand handle 12. The flexible shaft sleeve 16 is mounted on the base plate 111, and the drill bit 13 is rotatably mounted on the bottom of the base plate 111.

[0030] For ease of operation, the housing 21 has a vertically mounted slide groove 211 on the bracket 11, and a limiting plate 212 fixed to the top of the slide groove 211. A rack 22 is installed within the slide groove 211, which restricts the movement of the rack 22 while ensuring reliable sliding. Furthermore, the telescopic unit can be configured in two sets, with one membrane-breaking ring 25 connected to it by two symmetrically arranged racks 22 and gears 23. The motor 24 can also be a bidirectional motor. This structure results in more even force distribution and more stable operation.

[0031] For ease of operation, the telescopic unit also includes a proximity sensor to detect the movement of the rack 22. The proximity sensor is electrically connected to the controller, which in turn is electrically connected to the motor 24. This allows the motor 24 to be operated in both forward and reverse directions based on the position of the rack 22, reducing manual intervention. Specifically, the proximity sensor is a magnetic sensor. The magnetic element 26 of the magnetic sensor is mounted on the upper outer side of the rack 22, and the magnetic sensitive element 27 is mounted on the limiting plate 212 and the base plate 111, respectively defining the upper and lower positions of the rack 22. When the rack 22 moves to the upper limit position, the magnetic element 26 approaches the upper magnetic sensitive element 27. The magnetic sensitive element 27 detects the magnetic field signal and converts it into an electrical signal, which is then transmitted to the controller. At this time, the controller stops the motor 24. When the rack 22 moves to the lower limit position, the magnetic element 26 approaches the lower magnetic sensitive element 27. The magnetic sensitive element 27 detects the magnetic field signal and converts it into an electrical signal, which is then transmitted to the controller. At this time, the controller stops the motor 24 or reverses it at a predetermined speed.

[0032] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A well and cellar drilling tool, characterized in that, include: The drilling unit includes a bracket (11), a hand handle (12) disposed on the top of the bracket (11), a drill bit (13) mounted on the bottom of the bracket (11), a flexible shaft (14) connected to the drill bit (13), an engine (15) connected to the flexible shaft (14), and a flexible shaft sleeve (16) mounted at the connection between the drill bit (13) and the flexible shaft (14). The telescopic unit includes a housing (21) mounted on a bracket (11), a rack (22) movably mounted on the housing (21), a gear (23) meshing with the rack (22), a motor (24) connected to the gear (23), and a membrane-breaking ring (25) connected to one end of the rack (22), the membrane-breaking ring (25) surrounding the drill bit (13).

2. The well drilling tool according to claim 1, characterized in that, The support (11) includes a base plate (111), a support column (112) disposed on the base plate (111), and a top plate (113) disposed on the top of the support column (112). The hand handle (12) is located on the top, the flexible bushing (16) is located on the base plate (111), and the drill bit (13) is rotatably mounted on the bottom of the base plate (111).

3. The well drilling tool according to claim 1, characterized in that, The housing (21) has a slide groove (211) mounted vertically on the bracket (11) and a limiting plate (212) disposed on the top of the slide groove (211), and the rack (22) is installed in the slide groove (211).

4. The well drilling tool according to claim 3, characterized in that, The telescopic unit also includes a proximity sensor to sense the movement position of the rack (22); The proximity sensor is electrically connected to the controller, and the controller is electrically connected to the motor (24).

5. The well drilling tool according to claim 4, characterized in that, The proximity sensor is a magnetic sensor. The magnetic component (26) of the magnetic sensor is disposed on the upper outer side of the rack (22), and the magnetic sensitive element (27) of the magnetic sensor is disposed on the limiting plate (212) and the base plate (111).

6. The well drilling tool according to claim 1, characterized in that, The upper part of the hand lever (12) is provided with a curved handle (121).

7. The well drilling tool according to claim 1, characterized in that, The engine (15) is a backpack engine.

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