Well drilling equipment

Abstract

The present application provides a well-opening tool, which relates to the field of maintenance equipment. The well-opening tool includes a support mechanism, which includes a main beam and two support units. Each group of support units includes two support legs, and both support legs are rotatably matched with the main beam to switch between an expanded position and a folded position. The support legs can switch between an expanded position and a folded position. When in the folded position, the support legs are in close contact with the main beam. The overall structure is compact, small in size, and occupies a small space, which is convenient for storage and transportation. At the same time, when it is needed, the support legs are adjusted to the expanded position, and the main beam is supported by the support legs, and the main beam is located above the manhole cover to be opened. The manhole cover can be lifted by using a lifting mechanism. The construction saves time and labor, and the manhole cover is easy and quick to disassemble, and the construction efficiency is high.

Description

Technical Field

[0001] The present invention relates to the field of maintenance equipment, in particular to a well drilling tool. Background Art

[0002] In the existing technology, underground wells are used more and more frequently. They can not only serve as transfer stations for underground waterways, but also be used for projects such as underground power transmission. During community maintenance, sanitation work, municipal construction, etc., it is necessary to open the manhole cover first, and then facilitate the inspection of pipes, valves, cables, etc. in the well. The manhole cover materials are mostly cast iron or concrete materials, which are generally bulky. There are generally at least two opening holes reserved on the manhole cover to facilitate the opening of the manhole cover. In addition, the shape of the manhole cover is not limited to a disc shape. With the continuous increase in application scenarios, the use of manhole covers with square plate structures is becoming more and more frequent. When opening a well, the well opening equipment is generally used to lift the manhole cover, and then close the manhole cover after maintenance or inspection.

[0003] The inventors have found that the existing well drilling equipment has at least the following disadvantages:

[0004] Well drilling equipment is bulky and inconvenient to store and transport. Summary of the Invention

[0005] The object of the present invention is to provide a well-digging tool, which can adjust the structural shape as needed, has a compact structure and a small volume after folding, and is easy to store and transport.

[0006] The embodiment of the present invention is achieved as follows:

[0007] The present invention provides a well drilling tool, comprising:

[0008] The support mechanism includes a main beam and two support units, each group of the support units includes two support legs, and the two support legs are rotatably matched with the main beam to switch between an unfolded position and a folded position.

[0009] In an optional embodiment, when in the expanded position, the angle between the two supporting legs is α, and the angle α is an acute angle.

[0010] In an optional embodiment, the main beam includes a beam body and a mounting seat, and the mounting seat is fixedly connected to the beam body; the mounting seat is provided with a first positioning cavity and a second positioning cavity that are connected, and the support leg is connected to the mounting seat; when in the expanded position, the support leg is embedded in the first positioning cavity and abuts against the inner wall of the first positioning cavity; when in the folded position, the support leg is located in the second positioning cavity.

[0011] In an optional embodiment, the first positioning cavity has two first limiting walls arranged relatively parallel to each other, the two first limiting walls cooperate to clamp the support legs, and the angle between the first limiting walls on the two mounting seats for positioning the two support legs of the same support unit is α; the second positioning cavity has two opposite second limiting walls, the first limiting wall and the second limiting wall are arranged at an acute angle, and the angle between the second limiting walls on the two mounting seats for positioning the two support legs of the same support unit is β, and the angle of β is greater than the angle of α.

[0012] In an optional embodiment, the mounting seat includes a first side plate, a bottom plate, a second side plate, a first inclined plate and a second inclined plate, the first side plate, the bottom plate and the second side plate are connected in sequence, and the first side plate and the second side plate are arranged in parallel and spaced apart, and the second positioning cavity is formed between the first side plate and the second side plate; the first inclined plate is connected to the bottom plate and the first side plate at the same time, and the second inclined plate is connected to the bottom plate and the second side plate at the same time, the first inclined plate and the second inclined plate are arranged in parallel and spaced apart and jointly define the first positioning cavity.

[0013] In an optional embodiment, the mounting seat is provided with a first positioning hole and a second positioning hole, the first positioning hole simultaneously passes through the first side plate and the first inclined plate, and the portion of the first positioning hole located in the first side plate is provided with a first reaming portion extending in a direction away from the bottom plate; the second positioning hole simultaneously passes through the second side plate and the second inclined plate, and the portion of the second positioning hole located in the second side plate is provided with a second reaming portion extending in a direction close to the bottom plate; the two first side plates of the two mounting seats for positioning the same support unit are located between the two second side plates;

[0014] The main beam also includes a positioning shaft, which is simultaneously inserted into the first positioning hole and the second positioning hole, and can slide and rotate relative to the first positioning hole and the second positioning hole; the supporting leg is fixedly connected to the positioning shaft.

[0015] In an optional embodiment, a first fixing hole is provided on the first side panel, and a second fixing hole is provided on the second side panel; the main beam also includes a fixing pin, which is used to be inserted into the first fixing hole and the second fixing hole at the same time to lock the support leg in the expanded position, thereby preventing the support leg from moving from the first positioning cavity to the second positioning cavity.

[0016] In an optional embodiment, a walking wheel set is installed at the end of each supporting leg.

[0017] In an optional embodiment, the well drilling tool further includes a walking rail for laying on the ground, and the supporting legs are slidably engaged with the walking rail.

[0018] In an optional embodiment, the well opening tool further includes a plurality of lifting mechanisms, and the plurality of lifting mechanisms are all installed on the main beam and are arranged at intervals in the longitudinal direction of the main beam.

[0019] The beneficial effects of the embodiments of the present invention are:

[0020] In summary, the well opening tool provided in this embodiment has support legs that rotatably cooperate with the main beam to switch between an extended position and a folded position. When in the folded position, the support legs are in close contact with the main beam, resulting in a compact overall structure, a small size, and a small footprint, making it easy to store and transport. Furthermore, when needed, the support legs are adjusted to the extended position, the main beam is supported by the support legs, and the main beam is positioned above the manhole cover to be opened. The manhole cover can then be lifted using the lifting mechanism, saving time and effort during construction, making the manhole cover easy and quick to disassemble, and achieving high construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 A schematic structural diagram of a well drilling tool from one perspective according to an embodiment of the present invention;

[0023] Figure 2 A schematic structural diagram of a well drilling tool from another perspective according to an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of a partially folded structure of a well drilling tool according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic structural diagram of the main beam according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic structural diagram of a mounting base according to an embodiment of the present invention;

[0027] Figure 6 This is a schematic structural diagram of the support legs and positioning shaft according to an embodiment of the present invention;

[0028] Figure 7 Schematic diagram of the structure of the running rail according to an embodiment of the present invention.

[0029] icon:

[0030] 001-support mechanism; 100-main beam; 110-beam body; 111-first outer side surface; 112-second outer side surface; 120-mounting seat; 121-first side plate; 1211-first fixing hole; 122-bottom plate; 123-second side plate; 1231-second fixing hole; 124-first inclined plate; 125-second inclined plate; 126-first positioning cavity; 127-second positioning cavity; 128-first positioning hole; 1281-first reaming portion; 129-second positioning hole; 1291-second reaming portion; 130-positioning shaft; 200-support unit; 210-support leg; 300-walking wheel group; 002-walking rail; 021-guide ridge. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0034] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like indicate positions or locations based on the positions shown in the accompanying drawings, or the positions or locations in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0036] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0037] Currently, when opening a manhole cover, the well-opening equipment is transported to the site using an engineering vehicle, and the corresponding manhole cover is opened using the well-opening equipment. The well-opening equipment is generally a monolithic structure and cannot be adjusted. This results in the well-opening equipment being large and taking up a lot of space, making it inconvenient to store and transport. It requires an engineering vehicle with sufficient space for transportation. Furthermore, the high center of gravity during transportation requires additional equipment to tie it to the engineering vehicle. This makes transportation of the well-opening equipment very inconvenient, thereby increasing construction costs.

[0038] In view of this, the designer provides a well-opening tool that can adjust its structural shape as needed and can be adjusted to a folded state during storage and transportation, making the overall structure compact, small in size, and occupying little space, making it easy to store, with a low center of gravity during transportation, safe and convenient transportation, and low construction cost.

[0039] It should be understood that the well opening tool can be used to open a disc-shaped manhole cover or a square manhole cover, etc., and is not specifically limited in this embodiment.

[0040] Please combine Figure 1-Figure 3 In this embodiment, the well drilling tool includes a support mechanism 001, which includes a main beam 100 and two support units 200. Each group of support units 200 includes two support legs 210. The two support legs 210 are rotatably matched with the main beam 100 to switch between an unfolded position and a folded position.

[0041] Based on the above, the working principle of the well opening tool provided in this embodiment is as follows:

[0042] The support legs 210 are rotatably matched with the main beam 100 and can be switched between an unfolded position and a folded position. When in the folded position, the support legs 210 are in close contact with the main beam 100. The overall structure is compact, small in size, and occupies little space, making it easy to store and transport. At the same time, when needed, the support legs 210 are adjusted to the unfolded position, and the main beam 100 is supported by the support legs 210, and the main beam 100 is positioned above the manhole cover to be opened. The manhole cover can be lifted using the lifting mechanism, which saves time and effort during construction, is convenient and quick to disassemble, and has high construction efficiency. In addition, after the manhole cover is lifted, the well opening tool can be used to move the manhole cover away from the wellhead, making it easier for operators to go up and down the well for inspection and maintenance.

[0043] The following examples illustrate the detailed structure of the well opening tool provided in this application.

[0044] Please combine Figure 1 、 Figure 4-Figure 6 In this embodiment, optionally, the main beam 100 includes a beam body 110, four mounting seats 120, four positioning shafts 130 and four fixing pins. The four mounting seats 120 are all fixed on the beam body 110, two mounting seats 120 form a group, and the two mounting seats 120 in the same group are used to respectively cooperate with the two support legs 210 of the same support unit 200. The four positioning shafts 130 are respectively connected to the four mounting seats 120, and the four support legs 210 are respectively connected to the four mounting shafts, so that the mounting shafts can realize rotatable cooperation with the mounting seats 120, so that each support leg 210 can switch between an unfolded position and a folded position. The four fixing pins are respectively connected to the four mounting seats 120, and each positioning pin can be removed from the mounting seat 120. When the positioning pin is connected to the mounting seat 120, the fixing pin can limit the position of the support leg 210, so that the support leg 210 remains in the unfolded position, which is more stable and reliable during the support process and less likely to cause safety accidents.

[0045] Please combine Figure 4Optionally, the main beam 100 is a square tube, and the main beam 100 has a first outer side surface 111 and a second outer side surface 112 adjacent and vertically arranged. Two mounting seats 120 are installed on the first outer side surface 111, and two mounting seats 120 are installed on the second outer side surface 112. The two mounting seats 120 on the first outer side surface 111 are symmetrically arranged, and the two mounting seats 120 on the second outer side surface 112 are symmetrically arranged. The two mounting seats 120 of the same support unit 200 are symmetrically arranged, that is, the two mounting seats 120 on the first outer side surface 111 are symmetrically arranged. They are respectively arranged near the first end and the second end of the main beam 100, and the two mounting seats 120 on the second outer side surface 112 are respectively arranged near the first end and the second end of the main beam 100, and the two mounting seats 120 corresponding to the first end and located on the first outer side surface 111 and the second outer side surface 112 cooperate to install the two support legs 210 of one support unit 200, and the two mounting seats 120 corresponding to the second end and located on the first outer side surface 111 and the second outer side surface 112 cooperate to install the two support legs 210 of another support unit 200.

[0046] It should be understood that the structures of the four mounting bases 120 can be set to be the same, and each support leg 210 is connected to the corresponding mounting base 120 in the same manner. In this embodiment, in order to avoid repetitive descriptions, the structure of a mounting base 120 on the first outer side surface 111 is used as an example for explanation.

[0047] Please combine Figure 4 and Figure 5Optionally, the mounting seat 120 includes a first side plate 121, a bottom plate 122, a second side plate 123, a first inclined plate 124, and a second inclined plate 125. The first side plate 121, the bottom plate 122, and the second side plate 123 are connected in sequence, and the bottom plate 122 is fixed to the first outer side surface 111 by fasteners such as bolts, and the first side plate 121 and the second side plate 123 are arranged in parallel and spaced apart. The first inclined plate 124 is connected to both the bottom plate 122 and the first side plate 121, and the second inclined plate 125 is connected to both the bottom plate 122 and the second side plate 123. The first inclined plate 124 and the second inclined plate 125 are arranged in parallel and spaced apart and jointly define a first positioning cavity 126. A second positioning cavity 127 is formed between the first side plate 121 and the second side plate 123. The first positioning cavity 126 is located outside the second positioning cavity 127, that is, the two second positioning cavities 127 on the two mounting seats 120 on the same first outer side surface 111 are located between the two first positioning cavities 126. At the same time, the first positioning cavity 126 has two first limiting walls arranged relatively parallel to each other. The two first limiting walls cooperate to clamp the support leg 210, and the angle between the first limiting walls on the two mounting seats 120 that position the two support legs 210 of the same support unit 200 is α, and the angle α is an acute angle. The second positioning cavity 127 has two second limiting walls that are relatively opposite to each other. The angle between the second limiting walls on the two mounting seats 120 that position the two support legs 210 of the same support unit 200 is β. Furthermore, the first limiting wall and the second limiting wall on the mounting seat 120 are arranged at an acute angle, and the angle β is greater than the angle α. For example, in this embodiment, β is a right angle, that is, when the mounting seat 120 is installed on the first outer side surface 111 of the beam body 110, the second limiting wall is perpendicular to the first outer side surface 111.

[0048] Please combine Figure 5 Furthermore, the mounting base 120 is provided with a first positioning hole 128 and a second positioning hole 129. The first positioning hole 128 penetrates both the first side plate 121 and the first inclined plate 124. The portion of the first positioning hole 128 located on the first side plate 121 is provided with a first reaming portion 1281 extending away from the bottom plate 122. The second positioning hole 129 penetrates both the second side plate 123 and the second inclined plate 125. The portion of the second positioning hole 129 located on the second side plate 123 is provided with a second reaming portion 1291 extending toward the bottom plate 122. The two first side plates 121 of the two mounting bases 120 that position the same support unit 200 are located between the two second side plates 123. The positioning shaft 130 is simultaneously passed through the first positioning hole 128 and the second positioning hole 129, and the positioning shaft 130 can slide and rotate relative to the first positioning hole 128 and the second positioning hole 129. The support leg is fixedly connected to the positioning shaft 130, and the length direction of the support leg is set at an acute angle or an obtuse angle with the axial direction of the positioning shaft 130.

[0049] Furthermore, a first fixing hole 1211 is provided on the first side plate 121, and a second fixing hole 1231 is provided on the second side plate 123. Both the first fixing hole 1211 and the second fixing hole 1231 are circular holes and are coaxially arranged. The axes of the first fixing hole 1211 and the second fixing hole 1231 are parallel to the first outer side surface 111, that is, perpendicular to the second limiting wall. A fixing pin is configured to be simultaneously inserted into the first fixing hole 1211 and the second fixing hole 1231 to lock the support leg 210 in the deployed position, thereby preventing the support leg 210 from moving from the first positioning cavity 126 to the second positioning cavity 127.

[0050] The adjustment method of the support leg 210 and the mounting base 120 provided in this embodiment is as follows:

[0051] In the initial state, the support legs 210 are in the deployed position. At this point, one end of the positioning shaft 130 is inserted into the first positioning hole 128 on the first inclined plate 124, and the other end of the positioning shaft 130 is inserted into the second positioning hole 129 on the second inclined plate 125. Furthermore, the support legs 210 are located in the first positioning cavity 126, clamped between the two first limiting walls. The support legs 210 form an acute angle with the first outer side surface 111, and the angle between the two support legs 210 of the same support unit 200 is α. This means that when deployed, the two support legs 210 of the same support unit 200 form an acute angle, resulting in a smaller span, less space required for support, and greater adaptability to environmental conditions. Furthermore, after the manhole cover is lifted, the support legs 210 are subjected to less torque in the rotational deployment direction, resulting in more stable support. Furthermore, to ensure the positional stability of the support legs 210, fixing pins can be inserted into both the first fixing hole 1211 and the second fixing hole 1231. When the hoisting is completed, pull out the fixing pin, first apply force to the support leg 210 to make it withdraw from the first positioning cavity 126, and the positioning shaft 130 enters the first reaming portion 1281 and the second reaming portion 1291 together with the support leg 210. At this time, rotate the support leg 210 outward by a certain angle, that is, operate the support leg 210 to rotate a certain angle in the direction away from the support leg 210 on the second outer side surface 112, so that it is basically perpendicular to the first outer side surface 111 of the beam body 110. Next, rotate the support leg 210 in the direction close to the beam body 110 until it is in contact with the first outer side surface 111. During the rotation process, the support leg 210 is always between the second limiting wall and is not easy to interfere with the first limiting wall. After the folding action of the support leg 210 is completed, the support leg 210 is parallel to the beam body 110, with a compact structure, small size, and small space occupied.

[0052] Please combine Figure 1 and Figure 7In this embodiment, optionally, the well opening tooling also includes a walking rail 002 for laying on the ground and a lifting mechanism for lifting the manhole cover (not shown). There are two walking rails 002, which are independent of each other and laid parallel to the ground when in use. A guide ridge 021 is provided on the top of each walking rail 002. A walking wheel group 300 is installed at the bottom of each support leg 210. The walking wheel group 300 is clamped on the guide ridge 021 and can move in the length direction of the walking rail 002, thereby driving the support mechanism 001 and the manhole cover to move together. The design of the guide ridge 021 can improve the stability during walking. The lifting mechanism is installed on the beam body 110 and can be connected to the manhole cover, thereby driving the manhole cover to rise and fall.

[0053] Optionally, the number of lifting mechanisms can be one or more. When there are multiple lifting mechanisms, the multiple lifting mechanisms are all installed on the beam body 110 and arranged at intervals in the length direction of the beam body 110. For example, in this embodiment, the number of lifting mechanisms is two, and the manhole cover is lifted by cooperating with the two lifting mechanisms, which has high stability and safety.

[0054] It should be understood that the lifting mechanism can be but is not limited to an electric hoist.

[0055] In other embodiments, the mounting base 120 may be configured as an integrated structure. Furthermore, the two mounting bases 120 used to assemble the two support legs 210 of the same support unit 200 may be configured as an integrated structure, which makes installation more convenient.

[0056] In other embodiments, the support leg 210 can optionally be configured as a segmented structure. The portion of the support leg 210 that engages with the mounting base 120 can be made of a wear-resistant material. This prevents wear and tear when in contact with the first and second limiting walls, resulting in increased stability. The portion that engages with the ground can be made of a lower-cost material, thereby saving costs.

[0057] The well-opening tool provided in this embodiment can adjust its structural shape as needed. When folded, it has a compact structure and a small volume, which makes it easy to store and transport, thereby reducing construction costs.

[0058] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A well drilling tool, characterized in that: include: A support mechanism (001), the support mechanism (001) comprising a main beam (100) and two support units (200), each group of the support units (200) comprising two support legs (210), the two support legs (210) being rotatably matched with the main beam (100) to switch between an unfolded position and a folded position; When in the unfolded position, the angle between the two support legs (210) is α, and the angle α is an acute angle; a walking wheel set (300) is installed at the end of each support leg (210); The main beam (100) comprises a beam body (110) and a mounting seat (120), wherein the mounting seat (120) is fixedly connected to the beam body (110); the mounting seat (120) is provided with a first positioning cavity (126) and a second positioning cavity (127) that are in communication, and the support leg (210) is connected to the mounting seat (120); when in the unfolded position, the support leg (210) is embedded in the first positioning cavity (126) and abuts against the inner wall of the first positioning cavity (126); when in the folded position, the support leg (210) is located in the second positioning cavity (127); The first positioning cavity (126) has two first limiting walls arranged relatively parallel to each other, the two first limiting walls cooperate to clamp the support leg (210), and the angle between the first limiting walls on the two mounting seats (120) for positioning the two support legs (210) of the same support unit (200) is α; the second positioning cavity (127) has two second limiting walls opposite to each other, the first limiting wall and the second limiting wall are arranged at an acute angle, and the angle between the second limiting walls on the two mounting seats (120) for positioning the two support legs (210) of the same support unit (200) is β, and the angle β is greater than the angle α; The mounting seat (120) includes a first side plate (121), a bottom plate (122), a second side plate (123), a first inclined plate (124) and a second inclined plate (125), wherein the first side plate (121), the bottom plate (122) and the second side plate (123) are connected in sequence, and the first side plate (121) and the second side plate (123) are arranged in parallel and spaced apart, and a second positioning cavity (127) is formed between the first side plate (121) and the second side plate (123); the first inclined plate (124) is connected to the bottom plate (122) and the first side plate (121) at the same time, and the second inclined plate (125) is connected to the bottom plate (122) and the second side plate (123) at the same time, and the first inclined plate (124) and the second inclined plate (125) are arranged in parallel and spaced apart and jointly define the first positioning cavity (126).

2. The well opening tool according to claim 1, characterized in that: The mounting seat (120) is provided with a first positioning hole (128) and a second positioning hole (129), the first positioning hole (128) simultaneously passes through the first side plate (121) and the first inclined plate (124), and the portion of the first positioning hole (128) located on the first side plate (121) is provided with a first reaming portion (1281) extending in a direction away from the bottom plate (122); the second positioning hole (129) simultaneously passes through the second side plate (123) and the second inclined plate (125), and the portion of the second positioning hole (129) located on the second side plate (123) is provided with a second reaming portion (1291) extending in a direction close to the bottom plate (122); the two first side plates (121) of the two mounting seats (120) for positioning the same support unit (200) are located between the two second side plates (123); The main beam (100) further includes a positioning shaft (130), which is simultaneously inserted into the first positioning hole (128) and the second positioning hole (129), and the positioning shaft (130) can slide and rotate relative to the first positioning hole (128) and the second positioning hole (129); the supporting leg is fixedly connected to the positioning shaft (130).

3. The well drilling tool according to claim 1 or 2, characterized in that: A first fixing hole (1211) is provided on the first side plate (121), and a second fixing hole (1231) is provided on the second side plate (123); the main beam (100) further comprises a fixing pin, which is used to be inserted into the first fixing hole (1211) and the second fixing hole (1231) at the same time to lock the support leg (210) in the unfolded position, thereby preventing the support leg (210) from moving from the first positioning cavity (126) to the second positioning cavity (127).

4. The well opening tool according to claim 1, characterized in that: The well drilling tool further comprises a walking rail (002) for laying on the ground, and the supporting legs (210) are slidably matched with the walking rail (002).

5. The well opening tool according to claim 1, characterized in that: The well opening tool further comprises a plurality of lifting mechanisms, which are all mounted on the main beam (100) and arranged at intervals in the longitudinal direction of the main beam (100).

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