An expansion member that is restrained in relation to a rig base

Abstract

The utility model relates to drilling rig equipment technical field, concretely is a kind of expansion piece fixed with drilling rig base restraint, it includes: expansion main part, drive assembly and limiting component;Expansion main part is hollow columnar structure, its lateral wall is equipped with the expansion joint extending along the axial direction, each expansion joint is rotatably connected with expansion plate through connecting assembly, and expansion main part inside is equipped with accommodating cavity;Drive assembly is installed in the accommodating cavity, for driving the expansion plate and radially expanding;Limiting component includes at least two limit blocks, and it is symmetrically arranged on the outer lateral wall of expansion main part, and the side, away from expansion main part, of limit block is equipped with click. Expansion plate is radially expanded by drive assembly, so that expansion plate and drilling rig base mounting hole inner wall closely adhere, cooperate the clamping effect of click of limiting component and the clamping groove of mounting hole inner wall, double guarantee the connection stability of expansion piece and drilling rig base, effectively avoid the problem of loosening caused by drilling rig vibration.

Description

Technical Field

[0001] This utility model relates to the field of drilling equipment technology, specifically to an expansion member that is constrained and fixed to the drilling rig base. Background Technology

[0002] During the installation of drilling equipment, relevant components need to be fixedly connected to the drilling rig base to ensure the stability of the drilling rig during operation. Currently, the commonly used fixing methods are bolt connections or pin connections. However, in the environment of long-term vibration operation of the drilling rig, bolts are prone to loosening and pins are prone to wear, resulting in reduced connection reliability and posing safety hazards. At the same time, the installation and disassembly process of traditional fixing methods is relatively cumbersome and requires the use of special tools, which affects construction efficiency.

[0003] Therefore, a new type of component that is constrained and fixed to the drilling rig base is needed to solve the above problems. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an expansion member that is constrained and fixed with the drilling rig base.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] An expansion component constrained and fixed to a drilling rig base includes an expansion body, a driving assembly, and a limiting assembly. The expansion body is a hollow cylindrical structure with an axially extending expansion slot on its side wall. Each expansion slot is rotatably connected to an expansion plate via a connecting assembly. The expansion body has an internal receiving cavity. The driving assembly is installed in the receiving cavity and is used to drive the expansion plate to expand radially. The limiting assembly includes at least two limiting blocks symmetrically arranged on the outer side wall of the expansion body. The limiting blocks have locking teeth on the side away from the expansion body.

[0007] Furthermore, the drive assembly includes a threaded rod, a movable block, and a support rod. The threaded rod is rotatably installed inside the expansion body, and the movable block is mounted on the side end of the threaded rod. The number of support rods corresponds to the number of expansion joints. One end of the support rod is rotatably connected to the movable block via a connecting assembly, and the other end of the support rod is rotatably connected to the side end of the expansion plate via a connecting assembly.

[0008] Furthermore, the connecting assembly includes a first connector and a second connector, wherein the first connector and the second connector are rotatably connected.

[0009] Furthermore, one end of the threaded rod extends out of the expansion body and is connected to an operating handle, which has anti-slip texture.

[0010] Furthermore, the number of expansion joints is 2-4, and they are evenly distributed on the sidewalls of the expansion body.

[0011] Furthermore, the limiting block and the expansion body are integrally formed, and the locking teeth are evenly distributed along the length direction of the limiting block.

[0012] Furthermore, the outer wall of the expansion body is provided with anti-slip protrusions, which are distributed in a ring array.

[0013] Furthermore, a retaining ring for supporting the threaded rod is fixedly installed inside the expansion body, and the threaded rod is rotatably connected to the retaining ring.

[0014] The explanations of the nouns, conjunctions, or adjectives used in the above technical solutions are as follows:

[0015] Fixed connection: refers to a connection in which parts or components are fixed in place and there is no relative movement. It is divided into two types: detachable connection and non-detachable connection.

[0016] (1) Detachable connection: Components are fixed together using threaded rods, splines, wedges, etc. This type of connection can be disassembled during maintenance without damaging the parts. However, the specifications of the connectors used must be correct (such as the length of bolts, keys, and wedges) and properly tightened.

[0017] (2) Non-removable connections: These mainly refer to welding, riveting, and tenon joints. Since disassembly requires forging, sawing, or oxyacetylene cutting for repair or replacement, the parts generally cannot be reused. At the same time, attention should be paid to process quality, technical inspection, and remedial measures (such as correction and polishing) during connection.

[0018] The beneficial effects of this utility model are:

[0019] 1. The expansion plate is radially expanded by the drive component, so that the expansion plate fits tightly against the inner wall of the mounting hole of the drilling rig base. With the locking action of the locking teeth of the limiting component and the locking groove of the inner wall of the mounting hole, the connection stability between the expansion component and the drilling rig base is doubly guaranteed, effectively avoiding the loosening problem caused by drilling rig vibration.

[0020] 2. This expansion component can be expanded and contracted simply by rotating the operating handle. No special tools are required for installation and disassembly, making it simple and labor-saving, and improving construction efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall device according to an embodiment of the present invention;

[0023] Figure 2 This is a cross-sectional view of the overall device according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the expansion body according to an embodiment of the present utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the driving component according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the first connecting member in an embodiment of this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the second connector in an embodiment of this utility model.

[0028] In the diagram: 1. Expansion body; 2. Drive assembly; 3. Limiting assembly; 4. Expansion joint; 5. Expansion plate; 6. Receiving cavity; 7. Limiting block; 9. Clamping tooth; 10. Threaded rod; 11. Moving block; 12. Support rod; 13. Connecting assembly; 14. First connecting piece; 15. Second connecting piece; 16. Operating handle; 17. Anti-slip protrusion; 18. Fixing ring. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] An expansion joint that is constrained and fixed to the drilling rig base, such as Figures 1-5 As shown, it includes an expansion body 1, a driving component 2, and a limiting component 3. The expansion body 1 is a hollow columnar structure with an axially extending expansion slit 4 on its side wall. Each expansion slit 4 is rotatably connected to an expansion plate 5 via a connecting component 13. The expansion body 1 has an internal receiving cavity 6. The driving component 2 is installed in the receiving cavity 6 and is used to drive the expansion plate 5 to expand radially. The limiting component 3 includes at least two limiting blocks 7, symmetrically arranged on the outer side wall of the expansion body 1. The limiting block 7 has a locking tooth 9 on the side away from the expansion body 1.

[0031] The hollow columnar structure of the expansion body 1, combined with the axially extending expansion joint 4, provides reasonable space for the radial expansion of the expansion plate 5. This allows the expansion plate 5 to expand flexibly outward under the action of the drive assembly 2, thus tightly fitting against the inner wall of the drilling rig base mounting hole and forming a firm initial fixation. Meanwhile, the symmetrically arranged limiting blocks 7 in the limiting assembly 3, with their teeth 9 on the side furthest from the expansion body 1, can engage with the corresponding structure of the mounting hole inner wall or the drilling rig base, further restricting the axial and circumferential displacement of the expansion component. This dual fixing mechanism significantly improves the overall connection stability and effectively avoids loosening caused by vibration during drilling operation. The structural design of each component facilitates installation and adjustment. The drive assembly 2 can directly drive the expansion plate 5 to achieve expansion without complex tools or procedures. Combined with the expansion joint 4 guiding the rotation trajectory of the expansion plate 5, it can precisely control the degree of expansion to meet the installation requirements of different hole diameters. Simultaneously, the symmetrically distributed limiting blocks 7 can play a positioning role during installation, facilitating the quick placement of the expansion component into the preset position and improving installation efficiency. The expansion plate 5 is rotatably connected to the expansion body 1 via the connecting component 13, ensuring smooth expansion action and structural durability, and avoiding component damage that may be caused by rigid connections. The symmetrical arrangement of the limiting blocks 7 ensures even force distribution, reduces local stress concentration, and extends the service life of the expansion components. Furthermore, the overall structure is compact, with clearly defined functions and coordinated cooperation among components. While achieving secure fixation, it does not excessively increase the size and weight of the expansion components, making it suitable for various drilling rig base installation scenarios.

[0032] In a preferred embodiment of this invention, the driving assembly 2 includes a threaded rod 10, a movable block 11, and a support rod 12. The threaded rod 10 is rotatably mounted inside the expansion body 1. The movable block 11 is mounted on the side end of the threaded rod 10. The number of support rods 12 corresponds to the number of expansion slots 4. One end of each support rod 12 is rotatably connected to the movable block 11 via a connecting assembly 13, and the other end of each support rod 12 is rotatably connected to the side end of the expansion plate 5 via the connecting assembly 13. When it is necessary to drive the expansion plate 5 to expand, the threaded rod 10 is rotated. Since the movable block 11 is mounted on the side end of the threaded rod 10, the rotation of the threaded rod 10 is converted into linear movement of the movable block 11 along the axial direction of the threaded rod 10. At this time, the support rod 12, which is rotatably connected to the movable block 11 via the connecting assembly 13, will change angle as the movable block 11 moves. Because the other end of the support rod 12 is rotatably connected to the side of the expansion plate 5 through the connecting component 13, the change in the angle of the support rod 12 will generate a thrust on the expansion plate 5, causing the expansion plate 5 to rotate around the connecting component 13 connected to the expansion body 1, and finally realize that the expansion plate 5 expands outward in the radial direction, so as to fit tightly against the inner wall of the drilling rig base mounting hole and achieve a fixing effect.

[0033] In a preferred embodiment of the present invention, the connecting component 13 includes a first connecting member 14 and a second connecting member 15, wherein the first connecting member 14 and the second connecting member 15 are rotatably connected.

[0034] In a preferred embodiment of this utility model, one end of the threaded rod extends out of the expansion body 1 and is connected to an operating handle 16, which has anti-slip texture. The operating handle 16 provides a convenient point of force for driving the threaded rod 10 to rotate. Operators can complete the expansion action of the expansion plate 5 by directly rotating the handle without the need for additional tools, which greatly simplifies the operation process and improves the efficiency of installation and disassembly.

[0035] As a preferred embodiment of this utility model, the number of expansion joints 4 is 2-4, which are evenly distributed on the side wall of the expansion body 1.

[0036] In a preferred embodiment of this invention, the limiting block 7 and the expansion body 1 are integrally formed, and the locking teeth 9 are evenly distributed along the length of the limiting block 7. The integrally formed structure makes the connection between the limiting block 7 and the expansion body 1 more secure and reliable, avoiding the loosening and detachment problems that may occur with assembled structures, improving the overall stability and load-bearing capacity of the structure, reducing the number of parts, simplifying the production process, and lowering manufacturing costs. The evenly distributed locking teeth 9 ensure a smoother and more uniform engagement between the limiting block 7 and the drilling rig base, guaranteeing a balanced distribution of constraint force at each contact point, enhancing the limiting effect, effectively preventing axial or circumferential displacement of the expansion component during use, and further improving the reliability of the fixation.

[0037] In a preferred embodiment of this invention, the outer wall of the expansion body 1 is provided with anti-slip protrusions 17, which are arranged in a ring array. The anti-slip protrusions 17 are in direct contact with the inner wall of the drilling rig base mounting hole. By increasing the roughness of the contact surface, the friction between the expansion body 1 and the mounting hole is significantly improved. This makes it less likely for the expansion component to slip relative to the drilling rig when it vibrates or is subjected to external forces, further consolidating the overall fixing effect and reducing the risk of loosening.

[0038] In a preferred embodiment of this invention, a fixing ring 18 for supporting the threaded rod 10 is fixedly installed inside the expansion body 1, and the threaded rod 10 is rotatably connected to the fixing ring 18. The fixing ring 18, fixedly installed inside the expansion body 1, provides stable support for the threaded rod 10, preventing it from shifting or wobbling due to its own weight or external forces during rotation, ensuring that the threaded rod 10 is always positioned on the preset rotation axis. The rotatable connection between the threaded rod 10 and the fixing ring 18 restricts the radial displacement of the threaded rod 10, making its rotation more stable and reducing sluggish operation of the drive assembly 2 caused by shaking. This ensures that the moving block 11 can move smoothly along the axial direction of the threaded rod 10, thereby guaranteeing the stable and reliable expansion action of the expansion plate 5.

[0039] Working principle and usage process of this utility model:

[0040] In use, the expansion component is placed into the mounting hole of the drilling rig base. The threaded rod 10 is rotated via the operating handle 16, causing the moving block 11 to move axially along the threaded rod 10. The moving block 11, through the support rod 12, pushes the expansion plate 5 to rotate around the connecting assembly 13, causing the expansion plate 5 to expand radially outward, thus tightly fitting against the inner wall of the mounting hole and achieving initial fixation. Simultaneously, the locking teeth 9 on the limiting block 7 can engage with the corresponding structure on the inner wall of the mounting hole or the drilling rig base, further enhancing the fixing effect and preventing the expansion component from rotating or shifting.

[0041] The anti-slip protrusions 17 increase the friction between the expansion body 1 and the inner wall of the mounting hole, improving the stability of the fixation. The retaining ring 18 supports the threaded rod 10, ensuring the stability of the threaded rod 10 during rotation. The anti-slip texture on the operating handle 16 facilitates the operator's application of force and prevents slippage during operation.

[0042] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims of this utility model.

Claims

1. An expansion member that is constrained and fixed to a drilling rig base, characterized in that, The device includes an expansion body (1), a driving assembly (2), and a limiting assembly (3). The expansion body (1) is a hollow columnar structure with an axially extending expansion slit (4) on its side wall. An expansion plate (5) is rotatably connected to each expansion slit (4) via a connecting assembly (13). The expansion body (1) has a receiving cavity (6) inside. The driving assembly (2) is installed in the receiving cavity (6) and is used to drive the expansion plate (5) to expand radially. The limiting assembly (3) includes at least two limiting blocks (7) symmetrically arranged on the outer side wall of the expansion body (1). The limiting block (7) has a locking tooth (9) on the side away from the expansion body (1).

2. The expansion member constrained and fixed to the drilling rig base according to claim 1, characterized in that, The drive assembly (2) includes a threaded rod (10), a moving block (11), and a support rod (12). The threaded rod (10) is rotatably installed inside the expansion body (1). The moving block (11) is installed on the side of the threaded rod (10). The number of support rods (12) corresponds to the number of expansion joints (4). One end of the support rod (12) is rotatably connected to the moving block (11) through a connecting assembly (13). The other end of the support rod (12) is rotatably connected to the side of the expansion plate (5) through the connecting assembly (13).

3. An expansion member constrained and fixed to the drilling rig base according to claim 2, characterized in that, The connecting component (13) includes a first connector (14) and a second connector (15), wherein the first connector (14) and the second connector (15) are rotatably connected.

4. An expansion member constrained and fixed to the drilling rig base according to claim 2, characterized in that, One end of the threaded rod extends out of the expansion body (1) and is connected to an operating handle (16), which has anti-slip texture.

5. An expansion member constrained and fixed to a drilling rig base according to claim 1, characterized in that, The number of expansion joints (4) is 2-4, and they are evenly distributed on the side wall of the expansion body (1).

6. An expansion member constrained and fixed to a drilling rig base according to claim 1, characterized in that, The limiting block (7) and the expansion body (1) are integrally formed, and the locking teeth (9) are evenly distributed along the length direction of the limiting block (7).

7. An expansion member constrained and fixed to a drilling rig base according to claim 1, characterized in that, The outer wall of the expansion body (1) is provided with anti-slip protrusions (17), which are distributed in a ring array.

8. An expansion member constrained and fixed to a drilling rig base according to claim 1, characterized in that, The expansion body (1) has a fixed ring (18) for supporting the threaded rod (10) inside, and the threaded rod (10) is rotatably connected to the fixed ring (18).

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