A rotary drilling rig head and rotary drilling rig capable of being quickly disassembled and assembled

Abstract

The application relates to the technical field of construction engineering machinery, in particular to a rotary drilling rig head capable of being quickly disassembled and assembled and a rotary drilling rig. The rotary drilling rig head comprises a drill rod and a drill bit; an assembly groove is arranged on the end face of the axial one end of the drill rod, a positioning column is arranged on the groove bottom of the assembly groove, a plurality of operation holes penetrating the drill rod in the radial direction are arranged on the groove wall of the assembly groove, and an operation block adapted to slide in the axial direction of the operation hole is arranged in the operation hole; the end face of the axial one end of the drill bit is connected with an assembly column adapted to be inserted into the assembly groove, a plurality of clamping blocks are elastically and slidably connected on the assembly column, a guide surface is arranged on the clamping block, when the guide surface contacts the groove edge of the assembly groove in the axial direction of the drill rod, the clamping block will elastically slide, and a positioning groove adapted to the insertion of the positioning column is arranged on the assembly column; wherein the positioning column and the positioning groove are inserted to limit the rotation of the drill bit. The application can realize the quick disassembly and assembly of the drill head, and can improve the maintenance efficiency.

Description

Technical Field

[0001] This application relates to the field of construction machinery technology, specifically to a rotary drilling rig head and rotary drilling rig that can be quickly disassembled and assembled. Background Technology

[0002] A drilling rig is a mechanical device used for drilling holes on the ground or in other specific professions. It mainly works by driving the drill bit to rotate or impact, and with the help of a pressure device, the drill bit is driven downward or into the body of other objects to form a hole. It is widely used in fields such as geological exploration, oil extraction and water well drilling.

[0003] Currently, when using drilling rigs on construction sites, the drill bit and the rotating rod are usually assembled by fixing them with bolts. However, this assembly method requires workers to use tools to unscrew or screw them in one by one during actual installation and subsequent dismantling, resulting in relatively low dismantling efficiency. Utility Model Content

[0004] This application aims to solve at least one of the technical problems in the background art by providing a rotary drilling rig head and rotary drilling rig that can be quickly disassembled and assembled.

[0005] This application is achieved through the following technical solution:

[0006] In a first aspect, this application provides a rotary drilling rig head that can be quickly disassembled and assembled, the rotary drilling rig head comprising:

[0007] The drill rod has an assembly groove on one end face along its axial direction. A positioning post is provided at the bottom of the assembly groove. Several radially penetrating operating holes are also provided on the wall of the assembly groove. An operating block suitable for sliding along the axial direction of the operating hole is provided in the operating hole.

[0008] The drill bit has an axial end face connected to an assembly post suitable for insertion into the assembly slot. Several locking blocks are elastically slidably connected to the assembly post. Each locking block has a guide surface. When the guide surface contacts the edge of the slot opening of the assembly slot along the axial direction of the drill rod, the locking block will elastically slide. The assembly post also has a positioning slot suitable for insertion of the positioning post.

[0009] The positioning pin, when inserted into the positioning groove, limits the rotation of the drill bit.

[0010] The rotary drilling rig head provided in this application features a quick-release design. The drill bit and drill rod are elastically connected, and an operating block is installed on the drill rod. After the operating block is inserted into the operating hole, the drill bit can be unlocked by pressing the operating block. This design is convenient and has a simple structure. Several operating blocks, when inserted into the operating hole, can limit the rotation of the drill bit. Simultaneously, the positioning pin and positioning groove, when inserted and engaged, further limit the rotation of the drill bit. This double limiting prevents the drill bit from rotating relative to the drill rod during drilling, avoiding significant torsional impact between the drill bit and drill rod, and thus ensuring the structural integrity of the rig head.

[0011] In some optional embodiments, the positioning post is a cross-shaped post and is located at the center of the bottom of the assembly slot.

[0012] In some optional embodiments, the assembly column is a square column, wherein movable slots are provided on the sides at both ends of the assembly column along its length, and the locking block is located in the movable slots.

[0013] In some alternative embodiments, the card block and the assembly column are elastically slidably connected by a helical spring.

[0014] In some alternative embodiments, the guiding surface is an arc-shaped surface.

[0015] In some alternative embodiments, the operating block is elastically slidably connected to the drill pipe.

[0016] In some alternative embodiments, the operating block is slidably connected to the drill pipe via a corrugated spring.

[0017] In some optional embodiments, a limiting plate is also provided on the drill rod, and a guide block is provided on the drill bit. The limiting plate and the guide block are respectively provided with wedge surfaces that can fit together; wherein, when the assembly column is inserted into the assembly groove, the wedge surfaces on the limiting plate and the guide block fit together.

[0018] In some alternative embodiments, the wedge surfaces on the limiting plate and the guide block are respectively arc-shaped wedge surfaces.

[0019] Secondly, this application provides a rotary drilling rig, including any of the quick-disassembly rotary drilling rig heads described in the first aspect.

[0020] The rotary drilling rig provided in this application adopts a quick-disassembly rotary drilling rig head, which enables rapid maintenance and adjustment of the rotary drilling rig and can improve construction efficiency to a certain extent.

[0021] Compared with the prior art, this application has the following advantages and beneficial effects:

[0022] 1. The rotary drilling rig head that can be quickly disassembled and assembled provided in this application elastically connects the drill bit and drill rod, and sets an operating block on the drill rod. After the locking block is inserted into the operating hole, the drill bit can be unlocked by pressing the operating block. The operation is convenient and the structure is simple. Among them, after several locking blocks are inserted into the operating hole, the locking blocks can form a rotation limit for the drill bit. At the same time, the positioning pin and positioning groove can further limit the rotation of the drill bit after being inserted and matched. Through the double limit, the drill bit does not rotate relative to the drill rod during drilling, which can avoid large torsional impact between the drill bit and the drill rod and help ensure the structural integrity of the rig head.

[0023] 2. The rotary drilling rig provided in this application adopts a rotary drilling rig head that can be quickly disassembled and assembled, which can realize the rapid maintenance and adjustment of the rotary drilling rig and improve the construction efficiency to a certain extent. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the exemplary embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0025] Figure 1 A schematic diagram of the quick-assembly and disassembly rotary drilling rig head structure provided in the embodiments of this application;

[0026] Figure 2 A schematic diagram of the cross-sectional structure of a rotary drilling rig head that can be quickly disassembled and assembled, provided in an embodiment of this application;

[0027] Figure 3 A schematic diagram of the radial cross-sectional structure of a rotary drilling rig head that can be quickly disassembled and assembled, provided in an embodiment of this application.

[0028] Figure 4 for Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0029] The attached diagram shows the markings and corresponding component names:

[0030] 1-Drill pipe; 11-Drill bit; 21-Assembly post; 22-Positioning post; 23-Guide block; 24-Limiting plate; 25-Clamping block; 26-First slider; 27-Helical spring; 28-Operating block; 29-Second slider; 210-Wave spring. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this application are only for explaining this application and are not intended to limit this application.

[0032] Firstly, such as Figures 1-4 As shown in the figure, this application provides a rotary drilling rig head that can be quickly disassembled and assembled. The rotary drilling rig head that can be quickly disassembled and assembled includes a drill rod 1 and a drill bit 11.

[0033] The drill rod 1 has an assembly groove on one end face along its axial direction. A positioning post 22 is provided at the bottom of the assembly groove. Several radially penetrating operating holes are also provided on the wall of the assembly groove. An operating block 28 suitable for sliding along the axial direction of the operating hole is provided in the operating hole. The drill bit 11 has an assembly post 21 suitable for insertion into the assembly groove connected to one end face along its axial direction. Several locking blocks 25 are elastically slidably connected to the assembly post 21. The locking blocks 25 are constructed with guide surfaces. When the guide surfaces contact the edge of the groove opening along the axial direction of the drill rod 1, the locking blocks 25 will elastically slide, that is, the locking blocks 25 will avoid the groove opening of the assembly groove, so that the assembly post 21 can be continuously inserted into the assembly groove. The assembly post 21 also has a positioning groove suitable for the positioning post 22 to be inserted. The positioning post 22, after being inserted into the positioning groove, forms a rotation limit for the drill bit 11.

[0034] In this embodiment, the drill rod 1 is cylindrical in shape, and one end face of the drill rod 1 is a plane. The specific shape of the assembly groove is not limited. For example, it can be a square groove, a circular groove, an elliptical groove, or other polygonal grooves. The assembly groove is opened from the center of the end face of the drill rod 1. That is, if the assembly groove is a square groove, the centroid of the square groove coincides with the center of the end face. If the assembly groove is a circular groove or an elliptical groove, the center of the assembly groove coincides with the center of the end face. This design can ensure that the wall thickness around the assembly groove has a small difference as much as possible.

[0035] The position of the positioning post 22 on the bottom of the trench is not limited. Its length direction can coincide with or not coincide with the axis of the drill rod 1. When the length direction of the positioning post 22 coincides with the axis of the drill rod 1, the load on the drill bit 11 is smaller after rotation, which helps to ensure its structural integrity. When the length direction of the positioning post 22 does not coincide with the axis of the drill rod 1, that is, the positioning post 22 is set off-center, which can further limit the rotation of the drill bit 11 and ensure the relative posture stability of the drill bit 11 and the drill rod 1. In actual implementation, due to the actual application of this application In this embodiment, the drill bit 11 can be well limited in rotation by several locking blocks 25. Therefore, the length direction of the positioning post 22 is designed to coincide with the axis of the drill rod 1. In this embodiment, the rotation limitation of the drill bit 11 by the positioning post 22 is achieved by designing the shape of the positioning post 22. For example, the positioning post 22 adopts a non-rotating body structure, such as a cuboid, cube, ellipse or other polygonal post. In this embodiment, a cross-shaped post is adopted. The cross-shaped post can form rotation limitation in multiple parts and has a simple structure and is easy to manufacture.

[0036] The specific type of operating hole is not limited, such as round hole, square hole, triangular hole, elliptical hole, or other polygonal hole. This does not affect the achievement of the purpose of this application. In actual implementation, the operating hole can be designed as a round hole for easy processing, for example, it can be directly drilled by a drilling machine without milling. The length direction of the operating hole coincides with the radial direction of the drill rod 1. The number of operating holes is not limited. In this embodiment, it is preferably designed as two, with the two operating holes evenly distributed around the circumference of the drill rod 1 to ensure that the force on the locking block 25 is uniform when it is located in the operating hole. That is, the number of locking blocks 25 on the assembly column 21 is set to two. At the same time, two operating blocks 28 are respectively provided in the two operating holes. The two operating blocks 28 are symmetrically distributed to facilitate manual operation. In other embodiments, the number of operating holes can be designed as, for example, three, four, five, etc. Of course, these operating holes are all evenly distributed around the circumference of the drill rod 1 to ensure that the corresponding number of locking blocks 25 are subjected to uniform force.

[0037] The drill bit 11 is cylindrical in shape, with one axial end face being flat, which is used to mate with the drill rod 1. An assembly post 21 is connected to this end face. The shape of the assembly post 21 is adapted to the shape of the assembly groove to achieve insertion, meaning the assembly post 21 is a square block. A positioning groove is formed from one end face along the length of the assembly post 21. The shape of the positioning groove is adapted to the shape of the positioning post 22, meaning the positioning groove is a cross-shaped groove. When the assembly post 21 is inserted into the assembly groove, the positioning post 22 is simultaneously inserted into the positioning groove. The assembly post 21 and the assembly groove, along with the positioning post 22 and the positioning groove, provide dual rotational limiting for the drill bit 11.

[0038] In use, align the drill bit 11 axially with the drill rod 1, and adjust the direction of the mounting post 21 so that the mounting post 21 and the mounting slot correspond. Push the drill bit 11 axially closer to the drill rod 1, and the mounting post 21 and the mounting slot will interlock. The locking block 25 on the mounting post 21 will elastically slide under the action of the guide surface to avoid the mounting slot, allowing the mounting post 21 to be fully inserted into the mounting slot. Due to the setting of the operating hole, after the locking block 25 and the operating hole are aligned radially in the drill rod 1, the locking block 25 will elastically slide into the operating hole, thereby axially limiting the drill bit 11 and simultaneously limiting its rotation. When the drill bit 11 needs to be replaced or maintained, press the operating block 28 in the operating hole so that the operating block 28 pushes the locking block 25 radially along the drill rod 1. The locking block 25 will then disengage from the operating hole, and the drill bit 11 can be pulled out.

[0039] The rotary drilling rig head provided in this application features a quick-release mechanism. The drill bit 11 and drill rod 1 are elastically connected, and an operating block 28 is provided on the drill rod 1. After the locking block 25 is inserted into the operating hole, the drill bit 11 can be unlocked by pressing the operating block 28. This mechanism is convenient to operate and has a simple structure. Furthermore, after several locking blocks 25 are inserted into the operating hole, they can limit the rotation of the drill bit 11. Simultaneously, the positioning pin 22 and the positioning groove, when inserted and engaged, further limit the rotation of the drill bit 11. This dual limitation prevents the drill bit 11 from rotating relative to the drill rod 1 during drilling, avoiding significant torsional impact between the drill bit 11 and the drill rod 1, thus ensuring the structural integrity of the drilling rig head.

[0040] In some optional embodiments, the assembly column 21 is a square column, wherein movable grooves are provided on the sides at both ends of the assembly column 21 along its length, and the locking block 25 is located in the movable grooves.

[0041] In this embodiment, the movable groove is a square groove to prevent the locking block 25 from rotating accidentally, thus stabilizing the position and posture of the guide surface on the locking block 25 and ensuring the efficient insertion of the drill bit 11 and the drill rod 1. In actual implementation, the locking block 25 is connected to two first sliders 26. The groove wall of the movable groove is provided with a sliding groove adapted to the first sliders 26. The first sliders 26 are located in the sliding groove to form a sliding fit. The length direction of the sliding groove is parallel to the length direction of the movable groove. The end of the sliding groove away from the movable groove passes through the assembly post 21 and can be sealed with an end cap to limit the first sliders 26. A helical spring 27 is connected between the locking block 25 and the bottom of the movable groove.

[0042] In some alternative embodiments, the guiding surface is an arc-shaped surface.

[0043] In this embodiment, the arc-shaped surface design can prevent sharp edge contact, reduce structural wear, and ensure the structural integrity of the assembly groove and the locking block 25.

[0044] In some alternative embodiments, the operating block 28 is elastically slidably connected to the drill pipe 1.

[0045] In this embodiment, the elastic sliding connection between the operating block 28 and the drill rod 1 enhances the pressing rod and facilitates operation; at the same time, the operating block 28 can automatically return to its original position under elastic action, which can prevent the operating block 28 from interfering with the locking block 25 during the connection between the drill bit 11 and the drill rod 1.

[0046] In some optional embodiments, the operating block 28 is slidably connected to the drill rod 1 via a corrugated spring 210. In actual implementation, two second sliders 29 are connected to the operating block 28. A groove adapted to the second slider 29 is opened on the wall of the operating hole. One end of the groove passes through the drill rod 1 to make the groove and the assembly groove communicate. This end can be sealed by an end cap. A corrugated spring 210 is connected between the second slider 29 and the end cap.

[0047] In this embodiment, the operating hole on the drill rod 1 is small. The operating block 28 is slidably connected to the drill rod 1 by the corrugated spring 210, which can provide a large elastic force and prevent the operating block 28 from sliding easily due to accidental contact. At the same time, the corrugated spring 210 has excellent shock absorption and vibration absorption capabilities, and is suitable for high-frequency vibration applications such as drilling rigs.

[0048] In some optional embodiments, the drill rod 1 is further provided with a limiting plate 24, which is located on one end face of the drill rod 1 along the axial direction. This means that there is a gap between the drill rod 1 and the drill bit 11 suitable for accommodating the limiting plate 24. The limiting plate 24 is installed at an angle, and the drill bit 11 is provided with a guide block 23. The limiting plate 24 and the guide block 23 are respectively provided with wedge surfaces that can fit together. When the assembly column 21 is inserted into the assembly groove, the wedge surfaces on the limiting plate 24 and the guide block 23 fit together.

[0049] In this embodiment, the limiting plate 24 and the guide block 23 can further limit the radial movement of the drill bit 11, which is beneficial to improving the radial positioning of the drill bit 11. At the same time, they can provide a certain radial support for the drill bit 11 and share the radial load for the positioning post 22.

[0050] In some alternative embodiments, the wedge surfaces on the limiting plate 24 and the guide block 23 are respectively arc-shaped wedge surfaces.

[0051] Secondly, this application provides a rotary drilling rig, including any of the quick-disassembly rotary drilling rig heads described in the first aspect.

[0052] The rotary drilling rig provided in this application embodiment adopts a rotary drilling rig head that can be quickly disassembled and assembled, which enables rapid maintenance and adjustment of the rotary drilling rig and can improve construction efficiency to a certain extent.

[0053] The specific embodiments described above illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application is presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details are included in the above description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0054] It should be noted that in this specification, similar reference numerals and letters in the above figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this application, it should be noted that unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0055] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A quick detachable rotary drilling rig head, characterized in that, include: The drill rod (1) has an assembly groove on one end face of the axial direction. A positioning post (22) is provided at the bottom of the assembly groove. Several operation holes that penetrate the drill rod (1) radially are also provided on the wall of the assembly groove. An operation block (28) suitable for sliding along the axial direction of the operation hole is provided in the operation hole. The drill bit (11) has an axial end face connected to an assembly column (21) suitable for insertion into the assembly slot. The assembly column (21) has several locking blocks (25) elastically slidably connected to it. The locking blocks (25) have a guide surface. When the guide surface contacts the edge of the slot opening of the assembly slot along the axial direction of the drill rod (1), the locking blocks (25) will elastically slide. The assembly column (21) also has a positioning slot suitable for the positioning column (22) to be inserted. The positioning pin (22) is inserted into the positioning groove to limit the rotation of the drill bit (11).

2. The quick detachable rotary drilling rig head according to claim 1, characterized in that, The positioning post (22) is a cross post and is located at the center of the bottom of the assembly slot.

3. The quick detachable rotary drill head according to claim 1, wherein, The assembly column (21) is a square column, wherein the sides of both ends of the assembly column (21) in the length direction are provided with movable grooves, and the locking block (25) is located in the movable groove.

4. The quick detachable rotary drill head of claim 1, wherein, The card block (25) and the assembly column (21) are elastically slidably connected by a helical spring (27).

5. The quick detachable rotary drill head of claim 1, wherein, The guiding surface is an arc-shaped surface.

6. The quick detachable rotary drill head of claim 1, wherein, The operating block (28) is elastically slidably connected to the drill rod (1).

7. The quick detachable rotary drill head according to claim 6, wherein, The operating block (28) is slidably connected to the drill rod (1) via a corrugated spring (210).

8. The quick detachable rotary drill head of claim 1, wherein, The drill rod (1) is also provided with a limiting plate (24), and the drill bit (11) is provided with a guide block (23). The limiting plate (24) and the guide block (23) are respectively provided with wedge surfaces that can fit together; wherein, when the assembly column (21) is inserted into the assembly groove, the wedge surfaces on the limiting plate (24) and the guide block (23) fit together.

9. The quick detachable rotary drill head of claim 8, wherein, The wedge surfaces on the limiting plate (24) and the guide block (23) are respectively arc-shaped wedge surfaces.

10. A rotary drilling rig, characterized by Including the rotary drilling rig head that can be quickly disassembled as described in any one of claims 1 to 9.

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