Rock core drilling equipment

Abstract

The utility model provides rock core drilling equipment which comprises an outer pipe, an inner pipe and a pressurizing part, the inner pipe is arranged in the outer pipe in a penetrating mode, and the inner pipe is used for drilling a rock core; the pressurizing part is arranged between the outer pipe and the inner pipe and is used for cutting off the rock core in the inner pipe; wherein a preformed hole is formed in the side wall of the inner pipe, and the pressurizing part penetrates through the preformed hole to cut off a rock core in the inner pipe. According to the scheme, the inner pipe is used for containing the rock core, the outer pipe surrounds the inner pipe and the pressurizing part, and the protection effect is achieved. And the pressurizing part penetrates through the preformed hole to cut off the collected rock core, so that the rock core is collected in the inner pipe. According to the scheme, the problem that the drilled rock core cannot be broken off is solved, and the rock core with the complete length can be obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine equipment, in particular to a core drilling device. Background Art

[0002] In the process of core drilling, if the drilling length is short, the core often does not break. If the drilling length is too long, the core will be squeezed and broken. It is particularly difficult to drill a complete length of core, which has a huge impact on the later data analysis and calculation in the process of ground stress measurement.

[0003] Therefore, a core drilling device capable of cutting the core is needed to obtain the core of complete length. Utility Model Content

[0004] The utility model provides a core drilling device to solve the problem that the core drilled in the prior art cannot be broken.

[0005] In order to solve the above problems, the utility model provides a core drilling device, comprising an outer tube, an inner tube and a pressurizing part, wherein the inner tube is inserted into the interior of the outer tube, and the inner tube is used for drilling the core; the pressurizing part is arranged between the outer tube and the inner tube, and the pressurizing part is used for cutting the core in the inner tube; wherein the side wall of the inner tube has a reserved hole, and the pressurizing part passes through the reserved hole to cut the core in the inner tube.

[0006] With this solution, the inner tube is used to accommodate the core, and the outer tube surrounds the inner tube and the pressurizing part to protect it. The pressurizing part cuts the collected core through the reserved hole, so that the core is collected in the inner tube. With this solution, the problem that the drilled core cannot be broken is solved, and the core of full length can be obtained.

[0007] Furthermore, the pressurizing part includes a pressurizing member and a connecting member, the connecting member is drivingly connected to the pressurizing member, the connecting member drives the pressurizing member to move radially along the inner tube, and the pressurizing member passes through the reserved hole to pressurize the core to cut off the core.

[0008] With such arrangement, the connecting member drives the pressurizing member to move axially so that the pressurizing member extends or retracts. After the pressurizing member extends, it pressurizes the core to cut the core, thereby obtaining a core of complete length, solving the problem of the core not being easily broken in the prior art.

[0009] Furthermore, the pressurizing part also includes a limiting structure, the pressurizing member and the connecting member are threadedly matched, the connecting member is rotatably connected to the outer tube, the limiting structure limits the pressurizing member circumferentially, and the connecting member rotates to drive the pressurizing member to move axially.

[0010] With this arrangement, the pressure piece and the connecting piece are threadedly matched, and the limiting structure limits the pressure piece circumferentially, so that the pressure piece cannot rotate. The connecting piece rotates to drive the pressure piece to move axially, thereby achieving extension or retraction of the pressure piece.

[0011] Furthermore, the limiting structure includes a fixing member and a limiting key connected to each other, the fixing member is arranged around the reserved hole, the pressure member has a limiting groove, the limiting groove is arranged along the length direction of the pressure member, and the limiting groove and the limiting key are slidably matched.

[0012] In this arrangement, the fixing member is used to fix the limit key, and the limit groove is arranged along the length direction of the pressure member, so that the limit key slides along the limit groove, realizing the circumferential limit of the pressure member, and the pressure member can only move axially.

[0013] Furthermore, the pressure member is a stud, the connecting member is a nut, and the stud and the nut are threadedly matched.

[0014] With such arrangement, the stud and the nut thread cooperate so that the stud can be driven to move axially during the rotation of the nut.

[0015] Furthermore, the pressurizing part also includes a driving member, which is drivingly connected to the connecting member.

[0016] With such arrangement, the driving member drives the connecting member to rotate, thereby causing the pressurizing member to move axially, thereby achieving extension and retraction of the pressurizing member.

[0017] Furthermore, the pressurizing part also includes a first transmission wheel, a second transmission wheel and a transmission belt. The first transmission wheel is connected to the output shaft of the driving member, the second transmission wheel is connected to the connecting member, and the transmission belt is respectively connected to the first transmission wheel and the second transmission wheel. The transmission belt transmits the power of the first transmission wheel to the second transmission wheel.

[0018] With such arrangement, the output shaft of the driving member drives the first transmission wheel to rotate, and the transmission belt transmits the power of the first transmission wheel to the second transmission wheel, thereby driving the connecting member to rotate.

[0019] Furthermore, there are multiple pressurizing parts, which are distributed along the circumference of the inner tube, and there are multiple reserved holes, with each pressurizing part corresponding to a reserved hole.

[0020] In this way, multiple pressurizing parts are distributed along the circumference of the inner tube, and pressurize the core from multiple positions in the circumference, so that the core breaks. The reserved holes correspond to the pressurizing parts one by one, and the pressurizing piece of each pressurizing part extends from the corresponding reserved hole to pressurize the core.

[0021] Furthermore, the core drilling equipment also includes a first switch, which is electrically connected to the pressurizing part. The first switch is arranged at one end of the inner tube away from the rock formation. When the core fills the inner tube, the first switch is squeezed to open the pressurizing part through the first switch to cut off the core.

[0022] In this way, when the length of the core fills the inner tube, the core squeezes the first switch, causing the first switch to open the pressurizing part, thereby cutting off the core. When the core is broken, the pressure of the core on the first switch becomes smaller, the first switch rebounds, and the pressurizing part stops pressurizing.

[0023] Furthermore, the pressurizing part includes a pressurizing member, which is used to cut off the core through the reserved hole. The core drilling equipment also includes a second switch, which is arranged at the end of the outer tube away from the rock formation. The second switch is electrically connected to the pressurizing part, and the second switch controls the retraction of the pressurizing member.

[0024] With such arrangement, when coring is completed, the core drilling device is taken out from the rock formation, and the second switch is pressed to retract the pressure member and take the core out from the inner tube, thereby obtaining a core of a complete length.

[0025] By applying the technical solution of the utility model, a core drilling device is provided, including an outer tube, an inner tube and a pressurizing part. The inner tube is inserted into the inner tube and is used for drilling cores. The pressurizing part is arranged between the outer tube and the inner tube and is used for cutting off the cores in the inner tube. The side wall of the inner tube has a reserved hole, and the pressurizing part cuts off the cores in the inner tube through the reserved hole. With this solution, the inner tube is used to accommodate the cores, and the outer tube surrounds the inner tube and the pressurizing part to prevent the rock formation from colliding with the inner tube and the pressurizing part and causing damage. The outer tube protects the inner tube and the pressurizing part. The pressurizing part cuts off the collected cores through the reserved hole, so that the cores are collected in the inner tube. After the coring is completed, the cores are taken out of the inner tube to obtain cores of complete length. With this solution, the problem that the drilled core cannot be broken is solved, and the cores of complete length can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0027] Figure 1 A schematic structural diagram of a core drilling device provided in an embodiment of the utility model is shown;

[0028] Figure 2 Shows Figure 1 Inner tube of core drilling equipment;

[0029] Figure 3 Shows Figure 1 A cross-sectional view of a core drilling device in FIG.

[0030] Figure 4 Shows Figure 1 A schematic diagram of the structure of the pressurizing part of the core drilling equipment;

[0031] Figure 5 Shows Figure 1 An overhead view of the core drilling equipment in Figure 1.

[0032] The above drawings include the following reference numerals:

[0033] 10. External management;

[0034] 20. Inner tube;

[0035] 21. Reserved holes;

[0036] 30. Pressurizing unit;

[0037] 31. Pressurizing member; 311. Limiting groove;

[0038] 32. Connectors;

[0039] 33. Limiting structure;

[0040] 331, fixings;

[0041] 332, limit key;

[0042] 34. Driving parts;

[0043] 35. First transmission wheel;

[0044] 36. Second transmission wheel;

[0045] 37. Transmission belt;

[0046] 40. First switch;

[0047] 50. Second switch. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0049] like Figures 1 to 5 As shown, an embodiment of the utility model provides a core drilling device, including an outer tube 10, an inner tube 20 and a pressurizing part 30, wherein the inner tube 20 is inserted into the interior of the outer tube 10, and the inner tube 20 is used for drilling cores; the pressurizing part 30 is arranged between the outer tube 10 and the inner tube 20, and the pressurizing part 30 is used for cutting off the core in the inner tube 20; wherein the side wall of the inner tube 20 has a reserved hole 21, and the pressurizing part 30 cuts off the core in the inner tube 20 through the reserved hole 21.

[0050] In this solution, the inner tube 20 is used to accommodate the core, and the outer tube 10 surrounds the inner tube 20 and the pressurizing part 30 to prevent the rock formation from colliding with the inner tube 20 and the pressurizing part 30 and causing damage. The outer tube 10 protects the inner tube 20 and the pressurizing part 30. The pressurizing part 30 cuts the collected core through the reserved hole 21, so that the core is collected in the inner tube 20. After the coring is completed, the core is taken out from the inner tube 20 to obtain a core of complete length. Through this solution, the problem that the drilled core cannot be broken is solved, and the core of complete length can be obtained.

[0051] like Figure 3 As shown, the pressurizing part 30 includes a pressurizing member 31 and a connecting member 32. The connecting member 32 is drivingly connected to the pressurizing member 31. The connecting member 32 drives the pressurizing member 31 to move radially along the inner tube 20. The pressurizing member 31 passes through the reserved hole 21 to pressurize the core to cut the core.

[0052] With such arrangement, the connecting member 32 drives the pressurizing member 31 to move axially, so that the pressurizing member 31 extends or retracts. After extending, the pressurizing member 31 presses the core to cut the core, thereby obtaining a core with a complete length, solving the problem that the core is not easily broken in the prior art.

[0053] In a specific embodiment of the present invention, the end of the pressure member 31 close to the rock core is designed to be conical or pointed, so that the pressure member 31 can break the rock core more easily.

[0054] like Figure 3 As shown, the pressurizing part 30 also includes a limiting structure 33, the pressurizing member 31 is threadedly matched with the connecting member 32, the connecting member 32 is rotatably connected to the outer tube 10, the limiting structure 33 limits the pressurizing member 31 circumferentially, and the connecting member 32 rotates to drive the pressurizing member 31 to move axially.

[0055] In this arrangement, the pressure piece 31 and the connecting piece 32 are threadedly matched, and the limiting structure 33 limits the pressure piece 31 circumferentially, so that the pressure piece 31 cannot rotate. The connecting piece 32 rotates to drive the pressure piece 31 to move axially, thereby realizing the extension or retraction of the pressure piece 31.

[0056] Furthermore, the limiting structure 33 includes a fixing member 331 and a limiting key 332 connected to each other. The fixing member 331 is arranged around the reserved hole 21. The pressure member 31 has a limiting groove 311, which is arranged along the length direction of the pressure member 31. The limiting groove 311 is slidably matched with the limiting key 332.

[0057] In this way, the fixing member 331 is arranged around the reserved hole 21, and the fixing member 331 is used to fix the limit key 332. The limit groove 311 is arranged along the length direction of the pressure member 31, so that the limit key 332 slides along the limit groove 311, thereby realizing the circumferential limitation of the pressure member 31, and the pressure member 31 can only move axially.

[0058] In a specific embodiment of the present invention, the pressure member 31 is a stud, the connecting member 32 is a nut, and the stud and the nut are threadedly matched. In this way, the stud and the nut are threadedly matched, so that the stud can be driven to move axially during the rotation of the nut.

[0059] like Figure 4 As shown, the pressurizing part 30 further includes a driving member 34, which is drivingly connected to the connecting member 32. In this configuration, the driving member 34 drives the connecting member 32 to rotate, thereby causing the pressurizing member 31 to move axially, thereby achieving extension and retraction of the pressurizing member 31.

[0060] like Figure 4 As shown, the pressurizing part 30 also includes a first transmission wheel 35, a second transmission wheel 36 and a transmission belt 37. The first transmission wheel 35 is connected to the output shaft of the driving member 34, the second transmission wheel 36 is connected to the connecting member 32, and the transmission belt 37 is respectively connected to the first transmission wheel 35 and the second transmission wheel 36. The transmission belt 37 transmits the power of the first transmission wheel 35 to the second transmission wheel 36.

[0061] In this configuration, the output shaft of the driving member 34 drives the first transmission wheel 35 to rotate, and the transmission belt 37 transmits the power of the first transmission wheel 35 to the second transmission wheel 36, thereby driving the connecting member 32 to rotate.

[0062] In a specific embodiment of the present utility model, the first transmission wheel 35 and the second transmission wheel 36 can be sprockets, and the transmission belt 37 can be a transmission chain; the first transmission wheel 35 and the second transmission wheel 36 can be pulleys, and the transmission belt 37 can be a belt; the first transmission wheel 35 and the second transmission wheel 36 can be synchronous wheels, and the transmission belt 37 can be a synchronous belt.

[0063] like Figure 5 As shown, there are multiple pressurizing parts 30 , which are distributed along the circumference of the inner tube 20 , and there are multiple reserved holes 21 , with each pressurizing part 30 corresponding to a reserved hole 21 .

[0064] In this way, multiple pressurizing parts 30 are distributed along the circumference of the inner tube 20, and pressurize the core from multiple positions in the circumference to break the core. The reserved holes 21 correspond to the pressurizing parts 30 one by one, and the pressurizing member 31 of each pressurizing part 30 extends from the corresponding reserved hole 21 to pressurize the core.

[0065] In a specific embodiment of the present invention, there are four pressurizing parts 30 and four reserved holes 21. The four reserved holes 21 correspond to the four pressurizing parts 30 one by one. The four pressurizing parts 30 pressurize the core from all directions to cut the core.

[0066] like Figure 2As shown, the core drilling equipment also includes a first switch 40, which is electrically connected to the pressurizing part 30. The first switch 40 is arranged at one end of the inner tube 20 away from the rock formation. When the core fills the inner tube 20, the first switch 40 is squeezed to open the pressurizing part 30 through the first switch 40 to cut off the core.

[0067] In this way, when the length of the core fills the inner tube 20, the core squeezes the first switch 40, so that the first switch 40 opens the pressurizing part 30, thereby cutting off the core. When the core is broken, the pressure of the core on the first switch 40 becomes smaller, the first switch 40 rebounds, and the pressurizing part 30 stops pressurizing.

[0068] like Figure 1 As shown, the pressurizing part 30 includes a pressurizing member 31, which is used to cut off the core through the reserved hole 21. The core drilling equipment also includes a second switch 50, which is arranged at the end of the outer tube 10 away from the rock formation. The second switch 50 is electrically connected to the pressurizing part 30, and the second switch 50 controls the retraction of the pressurizing member 31.

[0069] With such arrangement, when coring is completed, the core drilling device is taken out of the rock formation, and the second switch 50 is pressed to retract the pressure member 31 and take the core out of the inner tube 20, thereby obtaining a core of a complete length.

[0070] In summary, the embodiment of the utility model provides a core drilling device, wherein the outer tube 10 surrounds the inner tube 20 and multiple pressurizing parts 30 to prevent the rock formation from damaging the pressurizing parts 30 and the inner tube 20, and the outer tube 10 plays a protective role. The pressurizing part 30 includes a pressurizing member 31, a connecting member 32 and a limiting structure 33, wherein the connecting member 32 drives the pressurizing member 31 to extend to cut off the core, and the limiting structure 33 circumferentially limits the pressurizing member 31 so that the pressurizing member 31 cannot rotate.

[0071] The principles and beneficial effects of this solution are as follows:

[0072] 1. Drilling the core through the inner tube 20, the pressurizing part 30 clamps off the core in the inner tube 20, and a complete core can be obtained;

[0073] 2. The pressurizing unit 30 is activated by squeezing the core, so that the core can be cut off after ensuring that the core is long enough without being visible;

[0074] 3. The outer tube 10 protects the inner tube 20 and the pressurizing part 30 so that the inner tube 20 and the pressurizing part 30 will not be damaged by friction with the rock formation.

[0075] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

[0076] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0077] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0078] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0079] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0080] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

Claims

1. A core drilling device, characterized in that: include: Outer tube (10); an inner tube (20), the inner tube (20) being arranged inside the outer tube (10), and the inner tube (20) being used for drilling cores; a pressurizing part (30), the pressurizing part (30) being arranged between the outer tube (10) and the inner tube (20), the pressurizing part (30) being used to cut off the core in the inner tube (20); The side wall of the inner tube (20) has a reserved hole (21), and the pressurizing part (30) passes through the reserved hole (21) to cut off the core in the inner tube (20).

2. The core drilling equipment according to claim 1, characterized in that: The pressurizing part (30) comprises a pressurizing member (31) and a connecting member (32), wherein the connecting member (32) is drivingly connected to the pressurizing member (31), and the connecting member (32) drives the pressurizing member (31) to move radially along the inner tube (20), and the pressurizing member (31) passes through the reserved hole (21) to pressurize the core to cut off the core.

3. The core drilling equipment according to claim 2, characterized in that: The pressurizing part (30) further comprises a limiting structure (33), the pressurizing member (31) is threadedly matched with the connecting member (32), the connecting member (32) is rotationally connected to the outer tube (10), the limiting structure (33) limits the circumferential position of the pressurizing member (31), and the connecting member (32) rotates to drive the pressurizing member (31) to move axially.

4. The core drilling equipment according to claim 3, characterized in that: The limiting structure (33) comprises a fixing member (331) and a limiting key (332) which are connected to each other. The fixing member (331) is arranged around the reserved hole (21). The pressure member (31) has a limiting groove (311). The limiting groove (311) is arranged along the length direction of the pressure member (31). The limiting groove (311) is slidably matched with the limiting key (332).

5. The core drilling equipment according to claim 3, characterized in that: The pressurizing member (31) is a stud, the connecting member (32) is a nut, and the stud is threadably matched with the nut.

6. The core drilling equipment according to claim 2, characterized in that: The pressurizing part (30) further comprises a driving member (34), wherein the driving member (34) is drivingly connected to the connecting member (32).

7. The core drilling device according to claim 6, characterized in that: The pressurizing part (30) further comprises a first transmission wheel (35), a second transmission wheel (36) and a transmission belt (37); the first transmission wheel (35) is connected to the output shaft of the driving member (34); the second transmission wheel (36) is connected to the connecting member (32); the transmission belt (37) is respectively connected to the first transmission wheel (35) and the second transmission wheel (36); the transmission belt (37) transmits the power of the first transmission wheel (35) to the second transmission wheel (36).

8. The core drilling equipment according to claim 1, characterized in that: There are a plurality of pressurizing parts (30), and the plurality of pressurizing parts (30) are distributed along the circumference of the inner tube (20); there are a plurality of reserved holes (21), and each pressurizing part (30) corresponds to one reserved hole (21).

9. The core drilling equipment according to claim 1, characterized in that: The core drilling device also includes a first switch (40), which is electrically connected to the pressurizing part (30). The first switch (40) is arranged at an end of the inner tube (20) away from the rock formation. When the core fills the inner tube (20), the first switch (40) is squeezed to open the pressurizing part (30) through the first switch (40) to cut off the core.

10. The core drilling equipment according to claim 1, characterized in that: The pressurizing part (30) comprises a pressurizing member (31), and the pressurizing member (31) is used to cut off the core through the reserved hole (21). The core drilling device also comprises a second switch (50), and the second switch (50) is arranged at an end of the outer tube (10) away from the rock formation. The second switch (50) is electrically connected to the pressurizing part (30), and the second switch (50) controls the retraction of the pressurizing member (31).

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