Drill rod for a portable ice drilling apparatus and portable ice drilling apparatus

Abstract

The utility model provides a kind of drill rod and portable ice drilling equipment for portable ice drilling equipment, drill rod is tubular structure, the both ends or inside of drill rod is provided with first filler, and first filler is non-water absorption structure;In the case where first filler and the inner wall of drill rod form sealed connection, first waterproof cavity is formed by first filler and the inner wall of drill rod in the length direction of its inside, or first filler is hollow structure, second waterproof cavity is formed by itself or first filler is solid integrated structure.The drainage volume of the first filler and the drill rod of the utility model is larger when completely immersed in water, which can provide sufficient buoyancy to prevent the ice drilling equipment from sinking into water.The first filler is arranged inside the drill rod, and there is no need to reserve a buoyancy block mounting portion on the outer wall, so the length of the drill rod can be designed short enough, and the drill rod and the ice drilling equipment can float on the water surface without bulky buoyancy block design, making it easy to carry.

Description

Technical Field

[0001] This utility model relates to the field of ice drilling technology, and in particular to a drill rod for a portable ice drilling device and a portable ice drilling device. Background Technology

[0002] Ice drilling equipment is a specialized tool designed for drilling operations on ice surfaces, typically used in conjunction with electric or manual drills. In practice, the operator mounts the ice drilling equipment on the output shaft of the electric or manual drill, drives the equipment to rotate, and, under the combined downward pressure applied by the operator, propels the drill bit into the ice layer. This type of equipment generally has an ice chip removal function, which promptly removes ice fragments generated during drilling, preventing ice chip accumulation that could affect drilling efficiency or cause the drill bit to jam. Drilling operations usually require complete penetration of the ice layer until contact with the water beneath the ice. Ice thickness varies significantly depending on region, season, and climate conditions, typically ranging from a few centimeters to over 150 centimeters. The required borehole diameter and depth also vary depending on the application scenario, such as ice fishing, hydrological surveying, ice and snow engineering, or polar scientific expeditions.

[0003] Currently, common ice drilling equipment, after successfully penetrating the ice layer, often encounters gaps between the equipment and the borehole due to the sudden appearance of water beneath the ice. Without an effective fall prevention mechanism, the entire machine or key components can easily detach from the operator's control under gravity and fall into the water. This not only leads to equipment loss and economic losses but can also pollute the aquatic environment and even endanger personnel safety. Especially in deep water areas or under conditions of flowing ice, the submerged equipment is difficult to retrieve, causing inconvenience to subsequent operations. Utility Model Content

[0004] In view of this, the present invention provides a drill rod for a portable ice drilling device to eliminate or improve one or more defects existing in the prior art.

[0005] One aspect of this utility model provides a drill rod for a portable ice drilling device. The drill rod has a tubular structure with a first connecting part and a second connecting part formed at its two ends, and a third connecting part formed on the outer wall of the drill rod. The first connecting part is used to connect to the drill bit, the second connecting part is used to directly or indirectly connect to the rotary drive mechanism, and the third connecting part is used to connect to the guide vane assembly. The drill rod is provided with a first filler at both ends or inside, and the first filler is a non-absorbent structure; When the first filler forms a sealed connection with the inner wall of the drill rod, a first waterproof cavity is formed inside the drill rod along its length direction by the first filler and the inner wall of the drill rod, or the first filler is a hollow structure that forms a second waterproof cavity, or the first filler is a solid integral structure. When the first filler forms a non-sealed connection with the inner wall of the drill pipe, the first filler is installed inside the drill pipe, and one or more of them are provided. The density of the first filler is less than that of water. The maximum width and length of the drill rod are configured such that the drill rod, with the help of the buoyancy of the first waterproof cavity, the second waterproof cavity or the first filler, can lift the drill rod-drill bit-blade assembly that has fallen into the water to the surface. The maximum width of the drill rod is 3cm to 5cm, and the length of the drill rod is 30cm to 150cm.

[0006] In some embodiments of this utility model, when the drill rod is a regular hexagonal tube, and the first waterproof cavity or the second waterproof cavity is equal to the inner cavity of the drill rod, or when the first filler completely fills the inner cavity of the drill rod, the length of the drill rod satisfies the following formula: Where L is the length of the drill pipe, W is the width of the drill pipe across its opposite sides, t is the wall thickness of the drill pipe, and ρ 杆 M is the density of the drill pipe material. other To remove the remaining weight of the drill rod from the ice drilling equipment, V other To remove the remaining volume of the drill rod from the ice drilling equipment, ρ 水 Let g be the density of water, g be the acceleration due to gravity, and c be the buoyancy margin coefficient, where 1.05 ≤ c ≤ 1.2.

[0007] In some embodiments of this utility model, W=3.8cm, t=0.16cm, the drill rod is made of aluminum alloy and ρ 杆 =2.73g / cm 3 M other =1062g, V other =640cm 3 , ρ 水 =1g / cm 3 g = 9.8 m / s 2 When c=1.05, the minimum length of the drill rod is L=63cm.

[0008] In some embodiments of this utility model, when the first filler is sealed to the inner wall of the drill rod, the connection method between the first filler and the inner wall of the drill rod includes any one of tension connection, elastic compression, bonding and welding. There is one first filler, with its two ends located at both ends of the drill rod; or, there are two first fillers, with each first filler located at one end of the drill rod.

[0009] In some embodiments of this utility model, when the first filler is not sealed to the inner wall of the drill rod, the first filler fills the inner cavity of the drill rod or fills a portion of the inner cavity of the drill rod. The first filler is fixed relative to the drill pipe, or the first filler is movable relative to the drill pipe and is restricted from extending beyond both ends of the drill pipe by a sealing structure on the drill pipe.

[0010] In some embodiments of this utility model, the drill pipe further includes an extension assembly, which includes an extension rod and a second filler. The extension rod has a tubular structure, and the second filler is disposed inside the extension rod or at both ends. The second filler is a non-absorbent structure, and one end of the extension rod is detachably connected to the top of the drill rod. When the second filler forms a sealed connection with the inner wall of the extension rod, a third waterproof cavity is formed inside the extension rod along its length direction by the second filler and the inner wall of the extension rod, or the second filler is a hollow structure that forms a fourth waterproof cavity, or the second filler is a solid integral structure. When the second filler forms a non-sealed connection with the inner wall of the extension rod, the second filler is installed inside the extension rod, and one or more of them are provided. The density of the second filler is less than that of water. The maximum width and length dimensions of the extension rod are configured such that the extension assembly can float on the water surface by means of the buoyancy of the third waterproof cavity, the fourth waterproof cavity, or the second filler.

[0011] In some embodiments of this utility model, the second connecting part includes a first reinforcing member, which is a tubular structure. The first reinforcing member is located at the top of the drill rod. The first reinforcing member is integrally formed with the drill rod or separately disposed therefrom. The first reinforcing member is disposed on the outer or inner side of the drill rod.

[0012] In some embodiments of this utility model, the extension assembly further includes an extension connector and a second reinforcing component; The extension connector is fixedly disposed at one end of the extension rod and is used to connect with the first reinforcing component; The second reinforcing member is fixedly disposed at the other end of the extension rod. When the extension rod is installed on the drill rod, the second reinforcing member is used to connect the electric drill connector.

[0013] In some embodiments of this utility model, the first filling element includes any one of a plug, a sealing plate, a filling core, and an air bladder; and / or, The drill pipe cross-section is any one of polygon, rounded rectangle, circle, or ellipse; and / or, The wall thickness t of the drill rod is 0.1cm to 0.2cm. When the drill rod is a regular hexagonal pipe, the width W of the opposite sides of the drill rod is ≥15t.

[0014] Another aspect of this utility model provides a portable ice drilling device, including the aforementioned drill rod, and also including a guide vane assembly; When the drill pipe is polygonal or elliptical, the guide vane assembly is installed on at least a portion of the drill pipe, and the guide vane assembly includes a plurality of guide elements, the central axes of which coincide; The flow guide includes a sleeve and spiral blades; The inner bore shape of the casing is adapted to the outer shape of the drill rod. The casing is fixedly connected to the outer wall of the drill rod. The root of the helical blade is fixedly connected to the casing or integrally formed. The helical blade extends helically along the central axis of the casing.

[0015] The drill rod of this utility model for portable ice drilling equipment has a hollow structure, which significantly reduces weight compared to a solid drill rod, thus improving the equipment's buoyancy after submersion. The large drainage volume when the first filler and drill rod are fully submerged provides sufficient buoyancy to prevent the equipment from sinking. The first filler is located inside the drill rod, eliminating the need for a buoyancy block mounting portion on its outer wall. This allows for a sufficiently short drill rod length and eliminates the need for a bulky buoyancy block design, making the drill rod and ice drilling equipment easy to carry. The internal location of the first filler does not negatively impact the operation of the ice drilling equipment; for example, the absence of a buoyancy block at the top of the drill rod does not affect the discharge of ice debris during operation. Compared to solutions with a buoyancy block at the top of the drill rod, the drill rod of this utility model has no external components, thus maintaining its dynamic characteristics when in contact with air or water flow, avoiding additional external resistance, and preventing the risk of snagging or colliding with ice, transport devices, or other objects during drilling, carrying, or storage.

[0016] Additional advantages, objects, and features of this invention will be set forth in part in the description which follows, and will in part become apparent to those skilled in the art upon review of the description, or may be learned by practice of the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures specifically pointed out in the description and drawings.

[0017] Those skilled in the art will understand that the objectives and advantages achievable with this invention are not limited to those specifically described above, and that the above and other objectives achievable with this invention will become clearer from the following detailed description. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, do not constitute a limitation thereof. The components in the drawings are not drawn to scale but are merely for illustrating the principles of the present invention. For ease of illustration and description of certain parts of the present invention, corresponding portions in the drawings may be enlarged, i.e., may appear larger relative to other components in an exemplary device actually manufactured according to the present invention.

[0019] Figure 1 This is a three-dimensional structural diagram of the drill rod in one embodiment of the present invention.

[0020] Figure 2 This is a schematic cross-sectional view of the drill pipe in one embodiment of the present invention. Figure 1 .

[0021] Figure 3 This is a schematic cross-sectional view of the drill pipe in one embodiment of the present invention. Figure 2 .

[0022] Figure 4 This is a schematic cross-sectional view of the drill pipe in one embodiment of the present invention. Figure 3 .

[0023] Figure 5 This is a three-dimensional structural diagram of a portable ice-drilling device according to one embodiment of the present invention.

[0024] Figure 6 This is a cross-sectional schematic diagram of the extension rod in one embodiment of the present invention.

[0025] Figure 7 This is a schematic diagram of the structure of the first reinforcing component and the electric drill connector in one embodiment of the present invention.

[0026] Figure 8 This is an exploded view of the drill rod and extension rod in one embodiment of the present invention.

[0027] Figure 9 This is a schematic diagram of the structure of the guide vane assembly in one embodiment of the present invention.

[0028] Reference numerals: 1. Drill rod; 11. First connecting part; 12. Second connecting part; 13. Third connecting part; 14a. First filler I; 14b. First filler II; 14c. First filler III; 15. First waterproof cavity; 16. Second waterproof cavity; 17. First reinforcing member; 171. Through hole; 172. Connecting hole; 173. Snap-fit ​​groove; 18. Electric drill connector; 181. Cylindrical section; 182. Limiting plate; 183. Electric drill connecting section; 2. Drill bit assembly; 3. Guide vane assembly; 31. Sleeve; 32. Spiral blade; 4. Extension rod; 41. Second filler; 42. Extension connector; 43. Second reinforcing member. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this utility model are used to explain the present utility model, but are not intended to limit the present utility model.

[0030] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0031] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, element, step, or component, but does not exclude the presence or addition of one or more other features, elements, steps, or components.

[0032] It should also be noted that, unless otherwise specified, the term "connection" in this article can refer not only to a direct connection, but also to an indirect connection involving an intermediary.

[0033] In the following description, embodiments of the present invention will be illustrated with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar parts, or the same or similar steps.

[0034] To address the problem that ice drilling equipment sinks in water after being dropped in existing technologies, this utility model provides a drill rod for portable ice drilling equipment. The drill rod has a built-in buoyancy structure, which, through its own structural design, can provide sufficient buoyancy so that the entire ice drilling equipment can float on the water surface after being dropped.

[0035] Reference Figure 1 , Figure 5 and Figure 7This utility model provides a drill rod for a portable ice-drilling device. The drill rod 1 is a tubular structure with a first connecting portion 11 and a second connecting portion 12 at both ends, and a third connecting portion 13 on the outer wall of the drill rod 1. The first connecting portion 11 is used to connect to the drill bit assembly 2, the second connecting portion 12 is used to directly or indirectly connect to the rotary drive mechanism, and the third connecting portion 13 is used to connect to the guide vane assembly 3. A first reinforcing member 17 can be directly or indirectly connected to the rotary drive mechanism, such as an electric drill or a hand drill. Under the drive of the rotary drive mechanism, the second connecting portion 12 transmits torque to the drill rod 1, which drives the drill bit assembly 2 to cut the ice layer, while simultaneously driving the guide vane assembly 3 to remove chips.

[0036] Reference Figures 2 to 4 The drill rod 1 has a first filler at both ends or inside. The first filler is non-absorbent, ensuring that it will not fail due to water absorption even after long-term use or in a humid environment, and that the buoyancy performance is stable and durable. In this embodiment, the buoyancy structure is integrated into both ends or inside the drill rod 1, without changing the key functional connection parts on the outside of the drill rod 1 that connect the drill bit assembly 2, the first reinforcing member 17, and the guide vane assembly 3. The guide vane assembly 3 can be disposed on part or all of the outer side wall of the drill bit assembly 2 along its length.

[0037] The first filler can be sealed to the inner wall of the drill pipe 1, reducing the amount of the first filler required; alternatively, it can be non-sealed, reducing the sealing process and lowering manufacturing difficulty. For example, the first filler can be configured in the following ways: Method 1: Refer to Figure 2 When the first filler I14a forms a sealed connection with the inner wall of the drill rod 1, a first waterproof cavity 15 is formed inside the drill rod 1 along its length by the first filler I14a and the inner wall of the drill rod 1. The first filler I14a can be placed only at the bottom end of the drill rod to prevent water from entering the bottom of the drill rod after it falls into the water; the first filler I14a can also be placed at both ends of the drill rod to prevent water from entering the bottom and top of the drill rod after it falls into the water. For example, the two ends of the drill rod 1 can be sealed with plugs made of PE material, and the plugs and the inner wall of the drill rod can be fixed by adhesive, while the adhesive applied to the outer circumference of the plugs has a sealing effect; or sealing plates of the same or different materials as the drill rod 1 can be welded to both ends of the drill rod 1.

[0038] Method 2: Refer to Figure 3When the first filler element II 14b forms a sealed connection with the inner wall of the drill pipe 1, the first filler element II 14b is a hollow structure, forming a second waterproof cavity 16. Due to the presence of the first filler element II 14b, water cannot enter the interior of the second waterproof cavity 16. For example, the first filler element II 14b may include an air bladder, which is filled with air inside the drill pipe. The air bladder is made of elastic material and is tightly connected to the inner wall of the drill pipe or by an adhesive. (Example provided) Method 3: Refer to Figure 4 When the first filler element III14c forms a sealed connection with the inner wall of the drill pipe 1, the first filler element III14c is a solid, integral structure. Because the first filler element III14c is a solid structure, water cannot enter the internal space of the drill pipe occupied by the first filler element III14c, nor can it enter the gap between the first filler element III14c and the inner wall of the drill pipe 1. For example, the first filler element III14c includes a filling core, preferably made of a lightweight material such as foam, pearl cotton, or PE cotton. The filling core and the drill pipe 1 can be fixedly connected using an adhesive.

[0039] Method 4: Refer to Figure 4 In the case where the first filler forms a non-sealed connection with the inner wall of the drill pipe 1, the first filler is installed inside the drill pipe 1, and one or more fillers are provided. In this method, water cannot enter the internal space of the drill pipe occupied by the first filler, but can enter the gap between the first filler and the inner wall of the drill pipe 1. For example, the first filler includes a filling core, and one or more filling cores can be provided inside the drill pipe. The filling core does not need to be fixedly connected to the drill pipe, but only needs to be confined within the inner cavity of the drill pipe.

[0040] The common feature of the above four methods is that, compared to the hollow drill rods in the prior art, the first filling member and the drill rod 1 in this embodiment have a larger drainage volume when fully immersed in water, which can provide sufficient buoyancy, allowing the ice drilling equipment to float on the water surface. Compared to the prior art scheme of installing a buoyancy block at the top of the drill rod (near the part connected to the electric drill), the drill rod in this embodiment does not need to reserve a buoyancy block mounting part on its outer wall. The length of the drill rod can be designed to be short enough, and it can float on the water surface without a bulky buoyancy block design, making the drill rod and ice drilling equipment easy to carry.

[0041] In methods two, three, and four above, the density of the first filler is lower than that of water, which can further reduce the weight of the ice drilling equipment and help prevent it from sinking into the water.

[0042] It should be noted that the maximum width and length of drill rod 1 are configured such that, with the buoyancy of the first waterproof cavity 15, the second waterproof cavity 16, or the first filler, drill rod 1 can lift the drill rod-drill bit-blade assembly that has fallen into the water. The drill rod-drill bit-blade assembly can refer to an ice-drilling device including drill rod 1, the first filler, the guide vane assembly 3, and the drill bit assembly 2. Provided that the buoyancy provided by drill rod 1 and the first filler is sufficiently large, the length of drill rod 1 can be designed to be slightly larger if its maximum width is slightly smaller; conversely, the maximum width of drill rod 1 can be designed to be slightly larger if its length is slightly smaller.

[0043] In the above embodiments, the length L of the drill rod 1 is between 30cm and 150cm. This range is a theoretically calculated value, and for example, 30cm, 40cm, 60cm, 67cm, 90cm, 100cm, 120cm, or 150cm can be selected. In practical applications, the length L of the drill rod can be selected from 67cm to 110cm. Provided that the drill rod cross-section is of moderate size and the wall thickness can provide sufficient strength, a drill rod length of 67cm can just float on the water surface. If the drill rod length exceeds 110cm, it is inconvenient to carry.

[0044] The maximum width of drill rod 1 is 3cm to 5cm. This maximum width range not only allows the drill rod to have a larger drainage volume per unit length, increasing the buoyancy of the ice drilling equipment, but also prevents the weight of the drill rod per unit length from being too large, thus avoiding an excessively heavy overall weight of the ice drilling equipment. It also saves drill rod material and reduces costs. When the drill rod cross-section is square or regular hexagonal, the maximum width of drill rod 1 refers to the distance between opposite sides of the square or regular hexagon; when the drill rod cross-section is circular, the maximum width of drill rod 1 refers to the diameter of the circle.

[0045] In the above embodiments, the second connecting part 12 is used to directly connect to the rotary drive mechanism. For example, the rotating shaft of the rotary drive mechanism can be inserted into the drill rod, and then the second connecting part 12 and the rotary drive mechanism can be directly connected through a pin. The second connecting part 12 can also be used to indirectly connect to the rotary drive mechanism. For example, a transition component can be provided at the second connecting part 12 of the drill rod, and the transition component can be connected to the rotating shaft of the rotary drive mechanism. The transition component can be a combination of the first reinforcing component 17 and the electric drill connector 18 or an extension rod.

[0046] In this embodiment, the drill rod 1 has a hollow structure, which significantly reduces weight compared to a solid drill rod, thus improving the buoyancy of the ice drilling equipment after it sinks in water. The large drainage volume of the first filler and drill rod 1 when fully submerged provides sufficient buoyancy to prevent the ice drilling equipment from sinking. The first filler is located inside the drill rod, eliminating the need for a buoyancy block mounting portion on its outer wall. This allows for a sufficiently short drill rod length and eliminates the need for a bulky buoyancy block design, making the drill rod and ice drilling equipment easy to carry. The internal location of the first filler does not negatively impact the operation of the ice drilling equipment; for example, the absence of a buoyancy block at the top of the drill rod does not affect the discharge of ice debris during operation. Compared to solutions with a buoyancy block at the top of the drill rod, the drill rod in this embodiment has no external components, thus maintaining its dynamic characteristics when in contact with air or water flow, avoiding additional external resistance, and preventing the risk of snagging or colliding with ice, transport devices, or other objects during drilling, carrying, or storage.

[0047] In some embodiments, when the drill rod 1 is a regular hexagonal tube, and the first waterproof cavity 15 or the second waterproof cavity 16 is equal to the inner cavity of the drill rod 1, or the first filler completely fills the inner cavity of the drill rod 1, the length of the drill rod 1 satisfies the following formula: Where L is the length of the drill rod 1 (unit: cm), W is the width of the opposite sides of the drill rod 1 (unit: cm), t is the wall thickness of the drill rod 1 (unit: cm), and ρ 杆 M is the density of the material of the drill pipe 1 (unit: g / cm³). other V represents the remaining weight (in grams) of the drill rod removed from the ice drilling equipment. other ρ represents the remaining volume (in cm³) of the drill rod after removing it from the ice drilling equipment. 水 Let be the density of water (unit: g / cm³), g be the acceleration due to gravity (unit: cm / s², take g=980), and c be the buoyancy margin coefficient, 1.05≤c≤1.2.

[0048] The derivation of the formula is as follows: The cross-sectional area of ​​the drill pipe is: The cross-sectional area of ​​the drill pipe's outer contour is: The total mass of the ice drilling equipment is: The total drainage volume of the ice drilling equipment is: The conditions under which the ice drilling equipment does not sink are: ,Right now: Summarized as follows: Setting the buoyancy margin coefficient c, we get: This formula provides a precise calculation basis for the anti-sinking design of ice drilling equipment, comprehensively considering the geometric parameters and material properties of the drill pipe, the load on the drill bit and blade assembly, and environmental factors. The minimum drill pipe length L calculated using this formula theoretically ensures that the total buoyancy of the drill pipe-drill bit-blade assembly is greater than its total weight. A buoyancy margin coefficient compensates for minor deviations that may exist between theoretical calculations and actual manufacturing, increasing the tolerance of the anti-sinking function; its value can be selected according to actual needs.

[0049] In some embodiments, with W=3.8cm, t=0.16cm, and the drill rod being made of aluminum alloy and ρ 杆 =2.73g / cm 3 M other =1062g, V other =640cm 3 , ρ 水 =1g / cm 3 g = 9.8 m / s 2 With c=1.05, the minimum length of drill rod 1 is L=63cm. In this embodiment, the drill rod itself has a sufficiently large cross-sectional area, high enough strength, and short enough length, satisfying the comprehensive requirements of buoyancy, strength, portability, and economy.

[0050] The width W of the drill pipe 1 across its sides is 3cm to 5cm.

[0051] For example, with W=3.5cm, t=0.16cm, and the drill pipe is made of aluminum alloy and ρ 杆 =2.73g / cm 3 M other =1062g, V other =640cm 3 , ρ 水 =1g / cm 3 g = 9.8 m / s 2 When c=1.05, the minimum length of the drill pipe is L=76cm.

[0052] With W=4cm, t=0.16cm, and the drill rod being made of aluminum alloy with ρ 杆 =2.73g / cm 3 M other =1062g, V other =640cm 3, ρ 水 =1g / cm 3 g = 9.8 m / s 2 When c=1.05, the minimum length of the drill pipe is L=52.5cm.

[0053] With W=5cm, t=0.16cm, and the drill rod being made of aluminum alloy with ρ 杆 =2.73g / cm 3 M other =1062g, V other =640cm 3 , ρ 水 =1g / cm 3 g = 9.8 m / s 2 When c=1.05, the minimum length of the drill rod is L=30cm.

[0054] In the above specific embodiments, the size of the cutter holder (part of the drill bit structure) adapted to the drill rod or ice drilling equipment can be selected as 20cm, that is, the drilling diameter is 20cm. It should be noted that in order to drill holes with a diameter of 15cm to 25cm, drill bits of corresponding sizes can be selected; different sizes of drill bits correspond to different M... other and V other The parameter will correspond to the M of the specific drill bit. other and V other By substituting the parameters into the above formula and then appropriately selecting other parameters, the minimum length of the drill pipe can be obtained.

[0055] In some embodiments, when the first filler is sealed to the inner wall of the drill pipe 1, the connection method between the first filler and the inner wall of the drill pipe 1 includes any one of tension connection, elastic compression, bonding and welding.

[0056] Reference Figure 4 The first filler is provided in one piece, with its two ends located at both ends of the drill pipe 1. The length of the first filler can be selected from 5cm to 8cm; or, refer to Figure 2 There are two first filler elements, which are respectively set at both ends of the drill pipe 1.

[0057] In some embodiments, when the first filler is not sealed to the inner wall of the drill pipe 1, the first filler fills the inner cavity of the drill pipe 1 or fills a portion of the inner cavity of the drill pipe 1 (see reference). Figure 4 ).

[0058] In other embodiments, the first filler is fixed relative to the drill pipe 1, or the first filler is movable relative to the drill pipe 1 and is limited by a sealing structure on the drill pipe 1 to prevent the first filler from extending beyond both ends of the drill pipe 1. The sealing structure may be a first reinforcing member 17 disposed at the top of the drill pipe or a drill bit assembly 2 disposed at the bottom of the drill pipe.

[0059] In some embodiments, drill pipe 1 further includes an extension assembly, as shown in the figure. Figure 6 The extension assembly includes an extension rod 4 and a second filler 41. The extension rod 4 is a tubular structure, and the second filler 41 is disposed inside the extension rod 4 or at both ends. The second filler 41 is a non-absorbent structure, and one end of the extension rod 4 is detachably connected to the top of the drill rod 1. When the ice thickness exceeds the working capacity of the standard drill rod, in order to adapt to thicker ice layers, the extension assembly of this embodiment can be installed on the drill rod 1 to increase the drilling depth without replacing the longer overall ice drilling equipment. Compared to the overall length of the drill rod, the separate arrangement of the drill rod and extension rod in this embodiment provides greater flexibility. For example, compared to the existing drill rod with an overall length of 120cm, the drill rod length in this embodiment can be 80cm, and the extension rod can be 40cm. In use, the drill rod can be drilled into the ice layer first, and then the extension rod can be connected to the drill rod to continue drilling. With this arrangement, when the operator uses the drill rod to drill, the top of the ice drilling equipment is located at the operator's waist, making it easier to apply downward pressure to the ice drilling equipment. If the existing 120cm drill rod is used, the top of the ice drilling equipment is located at the operator's chest level, making it inconvenient for the operator to exert force. The extension rod can be selected in lengths from 10cm to 50cm, such as 10cm, 30cm, 37cm, 40cm, or 50cm.

[0060] When the second filler 41 forms a sealed connection with the inner wall of the extension rod 4, a third waterproof cavity is formed inside the extension rod 4 along its length direction by the second filler 41 and the inner wall of the extension rod 4; or the second filler 41 is a hollow structure that forms a fourth waterproof cavity, or the second filler 41 is a solid integral structure. When the second filler 41 forms a non-sealed connection with the inner wall of the extension rod 4, the second filler 41 is installed inside the extension rod 4, and one or more are provided. The density of the second filler 41 is less than that of water. The maximum width and length dimensions of the extension rod 4 are configured such that the extension assembly can float on the water surface by means of the buoyancy of the third waterproof cavity, the fourth waterproof cavity, or the second filler 41.

[0061] The extension component in the above embodiment has significant buoyancy, allowing it to float on the water's surface after the entire ice-drilling setup, including the extension component, falls into the water. The second filler 41 can be installed in the extension rod 4 in the same way as the first filler is installed in the drill rod.

[0062] In some embodiments, the second connecting portion 12 includes a first reinforcing member 17, which is a tubular structure. The first reinforcing member 17 is located at the top end of the drill rod 1. The first reinforcing member 17 is integrally formed with the drill rod 1 or separately disposed therefrom. The first reinforcing member 17 is disposed on the outer or inner side of the drill rod 1.

[0063] When the first reinforcing component 17 is separately disposed from the drill rod, the first reinforcing component 17 can be disposed on the inner side of the drill rod. The external dimensions of the first reinforcing component 17 are slightly smaller than the internal dimensions of the drill rod. It can be fixed inside the drill rod by fasteners or crimping, making the overall shape of the drill rod more streamlined and compact. At least one first filler is disposed inside the drill rod 1, and the first filler abuts against one end of the first reinforcing component 17. The first reinforcing component 17 acts as a positioning structure for the first filler in the axial direction of the drill rod, effectively preventing the first filler from moving or shaking upwards inside the drill rod, for example, when the equipment is subjected to vibration or impact. At the same time, the first reinforcing component 17 can avoid problems such as sealing failure, change of buoyancy center, or abnormal noise that may be caused by displacement of the first filler, ensuring the long-term stability of the anti-sinking function. The outer wall of the first reinforcing component 17 fits against the inner wall of the drill rod 1. In this embodiment, the wall thickness of the drill rod is moderate. If the wall thickness of the drill rod is too large, it will affect the floating of the ice drilling equipment. If the wall thickness of the drill rod is too small, it will easily cause insufficient strength and structural damage. The top of the drill rod, namely the second connecting part 12, is used to indirectly connect the electric drill. During the torque transmission process, this part is the weakest part and is prone to deformation. In order to increase the strength of this part, the first reinforcing member 17 is set at the second connecting part 12, which can prevent structural damage at the second connecting part 12 and extend the service life of the drill rod.

[0064] The first reinforcing member 17 is also used to directly or indirectly connect the drill connector 18 or the extension rod 4. When the first reinforcing member 17 is connected to the drill connector 18, the drill rod can be connected to the drill through the drill connector 18. When the first reinforcing member 17 is connected to the extension rod 4, it can drill through thicker ice layers.

[0065] Specifically, the first reinforcing member 17 can be a tubular structure. The outer wall of the first reinforcing member 17 is adapted to the inner wall of the drill rod 1. The interior of the first reinforcing member 17 has a through hole 171 for inserting the electric drill connector 18 or the extension connector 42. The side wall of the first reinforcing member 17 has a connecting hole 172 for fixed connection with the drill rod 1, the extension connector 42, or the electric drill connector 18. The side wall of the first reinforcing member 17 has a snap-fit ​​groove 173 for engaging with a protrusion formed by stamping on the inner side wall of the drill rod 1.

[0066] The electric drill connector 18 comprises a cylindrical section 181, a limiting plate 182, and an electric drill connecting section 183, which are sequentially fixed or integrally formed. The cylindrical section 181 has a connecting hole for fixed connection with the drill rod 1 or a reinforcing member. When the limiting plate 182 abuts against the end of the drill rod 1 or the reinforcing member, the connecting holes on the first reinforcing member and the cylindrical section 181 correspond in position. The electric drill connecting section has a regular hexagonal prism structure for connecting an electric drill.

[0067] In some embodiments, refer to Figure 8 The extension assembly also includes an extension connector 42 and a second reinforcing member 43. The extension connector 42 is fixedly disposed at one end of the extension rod 4 and is used to connect to the first reinforcing member 17. The second reinforcing member 43 is fixedly disposed at the other end of the extension rod 4. When the extension rod 4 is installed on the drill rod 1, the second reinforcing member 43 serves to strengthen the end of the extension rod and also connects to the drill connector 18. The extension connector 42 and the first reinforcing member 17, as well as the second reinforcing member 43 and the drill connector 18, all use a male-female connector, allowing for convenient and quick insertion and removal. They can be fixedly connected with screws, ensuring reliable connection performance and easy disassembly.

[0068] The cross-section of drill pipe 1 is any one of polygon, rounded rectangle, circle or ellipse.

[0069] The wall thickness t of drill rod 1 is 0.1cm to 0.2cm. When drill rod 1 is a regular hexagonal pipe, the width W of opposite sides of drill rod 1 is greater than or equal to 15t, which can ensure that the cross section of drill rod 1 is large enough, and thus has a large enough drainage volume when the length is fixed.

[0070] Another embodiment of this utility model provides a portable ice-drilling device, see reference... Figure 5 The portable ice drilling device includes a drill rod 1 and a flow guide vane assembly 3. When the drill rod 1 is polygonal or elliptical, the flow guide vane assembly 3 is installed on at least part of the drill rod 1. The flow guide vane assembly 3 includes multiple flow guides, and the central axes of each flow guide coincide.

[0071] Reference Figure 9 The flow guide includes a casing 31 and a helical blade 32; the axial length of the casing 31 and the axial length of the helical blade 32 can be the same, and the end of the casing 31 is flush with the end of the helical blade 32. In the length direction of the drill pipe, the casing 31 can fill the entire drill pipe or occupy part of the outer surface of the drill pipe.

[0072] The inner hole shape of the casing 31 is adapted to the outer shape of the drill rod 1. When the casing 31 is fitted onto the drill rod 1, since the mating surface of the two is polygonal or elliptical, the torque of the drill rod 1 can be directly transmitted to the casing 31 without the need for an additional torque transmission structure.

[0073] The casing 31 is fixedly connected to the outer wall of the drill pipe 1. The root of the spiral blade 32 is fixedly connected to the casing 31 or integrally formed. The spiral blade 32 extends spirally along the central axis of the casing 31. The rotation angle of the spiral blade 32 is 180°. Two adjacent spiral blades 32 are connected end to end to form a complete guide path.

[0074] It should be clarified that this utility model is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this utility model is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this utility model.

[0075] In this invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with or in place of features of other embodiments.

[0076] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. For those skilled in the art, various modifications and variations can be made to the embodiments of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A drill rod for a portable ice drilling device, characterized in that, The drill rod (1) is a tubular structure with a first connecting part (11) and a second connecting part (12) formed at both ends. A third connecting part (13) is formed on the outer wall of the drill rod (1). The first connecting part (11) is used to connect the drill bit assembly (2), the second connecting part (12) is used to directly or indirectly connect the rotation drive mechanism, and the third connecting part (13) is used to connect the guide vane assembly (3). The drill rod (1) is provided with a first filler at both ends or inside, and the first filler is a non-absorbent structure; When the first filler forms a sealed connection with the inner wall of the drill rod (1), a first waterproof cavity (15) is formed inside the drill rod (1) in its length direction by the first filler and the inner wall of the drill rod (1), or the first filler is a hollow structure and forms a second waterproof cavity (16), or the first filler is a solid integral structure. In the case where the first filler forms a non-sealed connection with the inner wall of the drill rod (1), the first filler is installed inside the drill rod (1), and one or more of them are provided. The density of the first filler is less than that of water. The maximum width and length of the drill rod (1) are configured such that the drill rod (1) can lift the drill rod-drill bit-blade assembly that has fallen into the water by means of the buoyancy of the first waterproof cavity (15), the second waterproof cavity (16) or the first filler. The maximum width of the drill rod (1) is 3cm to 5cm, and the length of the drill rod (1) is 30cm to 150cm.

2. The drill rod for portable ice drilling equipment according to claim 1, characterized in that, When the drill rod (1) is a regular hexagonal tube, and the first waterproof cavity (15) or the second waterproof cavity (16) is equal to the inner cavity of the drill rod (1), or the first filler completely fills the inner cavity of the drill rod (1), the length of the drill rod (1) satisfies the following formula: Where L is the length of the drill rod (1), W is the width of the opposite side of the drill rod (1), t is the wall thickness of the drill rod (1), and ρ 杆 M is the density of the material of the drill rod (1). other To remove the remaining weight of the drill rod from the ice drilling equipment, V other To remove the remaining volume of the drill rod from the ice drilling equipment, ρ 水 Let g be the density of water, g be the acceleration due to gravity, and c be the buoyancy margin coefficient, where 1.05 ≤ c ≤ 1.

2.

3. The drill rod for portable ice drilling equipment according to claim 2, characterized in that, With W=3.8cm, t=0.16cm, and the drill rod (1) is made of aluminum alloy and ρ 杆 =2.73g / cm 3 M other =1062g, V other =640cm 3 , ρ 水 =1g / cm 3 g = 9.8 m / s 2 When c=1.05, the minimum length of the drill rod (1) is L=63cm.

4. The drill rod for portable ice drilling equipment according to claim 1, characterized in that, When the first filler is sealed to the inner wall of the drill rod (1), the connection method between the first filler and the inner wall of the drill rod (1) includes any one of tension connection, elastic compression, bonding and welding; There is one first filler, with the two ends of the first filler located at the two ends of the drill rod (1); or, there are two first fillers, with the two first fillers located at the two ends of the drill rod (1).

5. The drill rod for portable ice drilling equipment according to claim 1, characterized in that, When the first filler is not sealed to the inner wall of the drill rod (1), the first filler fills the inner cavity of the drill rod (1) or fills part of the inner cavity of the drill rod (1); The first filler is fixed relative to the drill rod (1), or the first filler is movable relative to the drill rod (1) and the first filler is restricted from extending beyond both ends of the drill rod (1) by the sealing structure on the drill rod (1).

6. The drill rod for portable ice drilling equipment according to claim 1, characterized in that, The drill pipe (1) also includes an extension assembly, which includes an extension rod (4) and a second filler (41). The extension rod (4) is a tubular structure, and the second filler (41) is disposed inside the extension rod (4) or at both ends. The second filler (41) is a non-absorbent structure, and one end of the extension rod (4) is detachably connected to the top of the drill rod (1). When the second filler (41) forms a sealed connection with the inner wall of the extension rod (4), a third waterproof cavity is formed inside the extension rod (4) along its length direction by the second filler (41) and the inner wall of the extension rod (4), or the second filler (41) is a hollow structure and forms a fourth waterproof cavity, or the second filler (41) is a solid integral structure. When the second filler (41) forms a non-sealed connection with the inner wall of the extension rod (4), the second filler (41) is installed inside the extension rod (4), and one or more are provided. The density of the second filler (41) is less than that of water. The maximum width and length dimensions of the extension rod (4) are configured such that the extension assembly can float on the water surface by means of the buoyancy of the third waterproof cavity, the fourth waterproof cavity or the second filler (41).

7. The drill rod for portable ice drilling equipment according to claim 1, characterized in that, The second connecting part (12) includes a first reinforcing member (17), which is a tubular structure. The first reinforcing member (17) is located at the top of the drill rod (1). The first reinforcing member (17) is integrally formed with the drill rod (1) or separately disposed. The first reinforcing member (17) is disposed on the outside or inside of the drill rod (1).

8. The drill rod for a portable ice drilling device according to claim 6, characterized in that, The extension assembly also includes an extension connector (42) and a second reinforcing component (43). The extension connector (42) is fixedly disposed at one end of the extension rod (4) for connection with the first reinforcing member (17); The second reinforcing member (43) is fixedly disposed at the other end of the extension rod (4). When the extension rod (4) is installed on the drill rod (1), the second reinforcing member (43) is used to connect the electric drill connector (18).

9. The drill rod for a portable ice drilling device according to claim 1, characterized in that, The first filling element includes any one of a plug, a sealing plate, a filling core, and an air bladder; and / or, The drill pipe (1) has a cross-section that is any one of a polygon, a rounded rectangle, a circle, or an ellipse; and / or, The wall thickness t of the drill rod (1) is 0.1cm to 0.2cm. When the drill rod (1) is a regular hexagonal pipe, the width W of the opposite side of the drill rod (1) is ≥15t.

10. A portable ice-drilling device, characterized in that, The drill pipe (1) as described in any one of claims 1-9 is further comprising a guide vane assembly (3). When the drill rod (1) is polygonal or elliptical, the guide vane assembly (3) is installed on at least part of the drill rod (1), and the guide vane assembly (3) includes a plurality of guide elements, the central axes of each guide element being coincident; The flow guide includes a sleeve (31) and a spiral blade (32). The inner hole shape of the casing (31) is adapted to the outer shape of the drill rod (1). The casing (31) is fixedly connected to the outer wall of the drill rod (1). The root of the spiral blade (32) is fixedly connected to the casing (31) or integrally formed. The spiral blade (32) extends spirally along the central axis of the casing (31).

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