Rotary drilling rig bolt connecting assembly with anti-loosening function

Abstract

The utility model relates to the technical field of bolts, and solves the problems that during the operation of a rotary drilling rig, a large amount of vibration is generated, so that a component connecting structure is loosened, components fall off, safety accidents are caused, the service life of the components is shortened, and inconvenience is brought to later maintenance. The rotary drilling rig bolt connecting assembly with the anti-loosening function comprises a bolt and a nut, the bottom end of the bolt is sleeved with a spring piece A, triangular blocks A are arranged on the surface of the spring piece A in an annular array mode, a threaded section of the bolt is sleeved with a spring piece B, and a plurality of triangular blocks B are arranged at the bottom of the spring piece B in an annular array mode. The inclined face of the triangular block A inclines towards the head of the bolt, and the inclined face of the triangular block B inclines towards the screwing direction of the nut. The inner diameter of the spring piece A is in interference fit with a polished rod section at the bottom end of the bolt, and the inner diameter of the spring piece B is in clearance fit with a threaded section of the bolt.

Description

TECHNICAL FIELD

[0001] The utility model relates to bolt technical field, concretely is a rotary drilling rig bolt connection subassembly with anti -loose function. BACKGROUND

[0002] Rotary drilling rig is a kind of construction machinery suitable for hole forming operation in building foundation engineering. It is mainly suitable for sand, clay, silty soil and other soil layer construction, and is widely used in cast-in-place pile, continuous wall, foundation reinforcement and other various foundation construction, and its telescopic drill rod can be spliced to extend the operation depth; main and auxiliary winches are used in cooperation, and the efficiency of drilling tool is improved; drilling tool types include short spiral drill bit, rotary bucket, core drill bit, etc., to meet the dry or wet operation demand.

[0003] But rotary drilling rig will produce a large amount of vibration during operation, causing the loosening of component connection structure, further causing the falling of component, producing safety accident, and also reducing the service life of component, and bringing inconvenience to later maintenance. UTILITY MODEL CONTENT

[0004] To overcome the defects of prior art, the utility model provides a rotary drilling rig bolt connection subassembly with anti-loose function, solves the problems that rotary drilling rig will produce a large amount of vibration during operation, causing the loosening of component connection structure, further causing the falling of component, producing safety accident, and also reducing the service life of component, and bringing inconvenience to later maintenance.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a rotary drilling rig bolt connection subassembly with anti-loose function, including bolt and nut, the bottom end of bolt is sleeved with A spring sheet, A spring sheet surface annular array sets up A triangular block, the threaded section of bolt is sleeved with B spring sheet, the bottom of B spring sheet annular array sets up several B triangular blocks.

[0006] In a certain specific embodiment, the inclined surface of A triangular block is inclined towards the head direction of bolt, and the inclined surface of B triangular block is inclined towards the tightening direction of nut.

[0007] In a certain specific embodiment, the inner diameter of A spring sheet is interference fit with the smooth rod section of bolt bottom end, and the inner diameter of B spring sheet is clearance fit with the threaded section of bolt.

[0008] In a certain specific embodiment, the height of A triangular block is greater than the thickness of A spring sheet, and the height of B triangular block is less than the thickness of B spring sheet.

[0009] In a certain specific embodiment, the outer edge of A spring sheet extends to form a flange structure, and the diameter of flange structure is greater than the diameter of bolt head bottom surface.

[0010] In a specific embodiment, the top surface of the B spring sheet is provided with an annular protrusion, the height of the annular protrusion is matched with the depth of the nut bottom groove.

[0011] Compared with the prior art, the utility model provides a rotary drilling rig bolt connection assembly with anti-loosening function has the following beneficial effects:

[0012] In the technical scheme, the A spring sheet at the bottom end of the bolt and the A triangular block are designed, the A spring sheet is elastically deformed when being pressed, the A triangular block is enhanced in friction with the mounting surface, the bolt and the mounting surface are locked to prevent slipping, and the problem of bolt loosening due to vibration is solved; the B spring sheet and the B triangular block on the threaded section are deformed under the pressure of the nut when the nut is tightened, the B triangular block is engaged with the thread to form self-locking, the nut is prevented from rotating in the reverse direction and loosening, the double anti-loosening structure improves the connection stability; the height of the A triangular block is greater than the thickness of the spring sheet, the protruding part of the triangular block is embedded in the micro concave mark of the mounting surface, and the design that the height of the B triangular block is less than the thickness of the spring sheet respectively enhances the anchoring effect and avoids excessive wear; the flanging structure of the A spring sheet prevents the spring sheet from rotating circumferentially, and ensures the consistency of the direction of the triangular block; the annular protrusion at the top of the B spring sheet is matched with the nut groove, and the transverse vibration deviation of the nut is further inhibited. BRIEF DESCRIPTION OF DRAWINGS

[0013] The drawings described herein are used to provide further understanding of the present application, constitute a part of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0014] Figure 1 It is a whole structure schematic view of the utility model;

[0015] Figure 2 It is a bolt structure schematic view of the utility model;

[0016] Figure 3 It is a nut structure schematic view of the utility model;

[0017] Figure 4 It is a B spring sheet structure schematic view of the utility model.

[0018] In the drawings: 1, bolt; 2, nut; 3, A spring sheet; 4, A triangular block; 5, B spring sheet; 6, B triangular block. DETAILED DESCRIPTION

[0019] The embodiments of the present application will be described in detail below with the drawings and examples, so that the realization process of how the present application applies technical means to solve technical problems and achieves technical effects can be fully understood and implemented.

[0020] Figures 1-4For an embodiment of the utility model, a rotary drilling rig bolt connection assembly with anti-loosening function, including bolt 1 and nut 2, the bottom end of bolt 1 is sleeved with A spring piece 3, A spring piece 3 surface annular array sets up A triangular block 4, bolt 1 thread section is sleeved with B spring piece 5, and the bottom of B spring piece 5 is annular array and is provided with a plurality of B triangular blocks 6.

[0021] The specific problem that the embodiment is aimed at is that the rotary drilling rig produces a large amount of vibration during operation, which causes the loosening of the component connection structure, and further causes the falling of the components, which produces safety accidents, reduces the service life of the components, and brings inconvenience to the later maintenance. The A spring piece 3 at the bottom end of the bolt 1 and the A triangular block 4 thereof are designed, the A spring piece 3 is elastically deformed when being pressed, the inclined surface of the A triangular block 4 is enhanced by friction with the mounting surface, the anti-skid locking of the bolt 1 and the mounting surface is realized, the problem of loosening of the bolt due to vibration is solved, the B spring piece 5 and the B triangular block 6 on the threaded section are deformed under the pressure of the nut 2 when the nut 2 is tightened, the inclined surface of the B triangular block 6 is engaged with the thread to form self-locking, the reverse rotation loosening of the nut 2 is prevented, the double anti-loosening structure improves the connection stability, the height of the A triangular block 4 is greater than the thickness of the spring piece, the protruding part of the triangular block is embedded into the micro concave mark of the mounting surface, the height of the B triangular block 6 is less than the thickness of the spring piece, the anchoring effect is enhanced and excessive wear is avoided, the flanging structure of the A spring piece 3 prevents the circumferential rotation of the spring piece, and the consistency of the direction of the triangular block is ensured, the annular protrusion at the top of the B spring piece 5 is matched with the groove of the nut 2, and the transverse vibration deviation of the nut 2 is further inhibited.

[0022] The light rod section at the bottom end of the bolt 1 is sleeved into the A spring piece 3, the tip of the annularly distributed A triangular block 4 on the surface thereof faces downward, the threaded section is sleeved with the B spring piece 5, and the tip of the annularly distributed B triangular block 6 at the bottom thereof faces upward, when the nut 2 is tightened, the A spring piece 3 is pressed on the mounting surface, the A triangular block 4 is pierced into the micro hole of the mounting surface to form anchoring, after the B spring piece 5 is pressed downward by the nut 2, the B triangular block 6 is embedded into the thread gap to form self-locking, in the embodiment, the A / B spring piece 3 / 5 forms bidirectional anti-loosening, the A triangular block 4 vibrates more tightly when vibrating, the B triangular block 6 prevents the nut 2 from rotating, and the problem of loosening of the bolt of the rotary drilling rig is solved.

[0023] In the embodiment, the inclined surface of the A triangular block 4 is inclined toward the head direction of the bolt 1, and the inclined surface of the B triangular block 6 is inclined toward the tightening direction of the nut 2.

[0024] The inclined surface of the A triangular block 4 is inclined to the bolt head by about 45°, the A triangular block 4 is extruded outward to increase the friction with the mounting surface when the nut 2 is tightened, the inclined surface of the B triangular block 6 is inclined to the tightening direction of the nut by about 30°, the slight rotation of the nut 2 is blocked by the inclined surface of the B triangular block 6 when vibrating, the direction design of the inclined surface makes the A triangular block 4 generate expansion force, the B triangular block 6 forms one-way non-reversing, and the anti-loosening effect is improved.

[0025] In the specific embodiment, the inner diameter of the A spring sheet 3 is interference fit with the smooth rod section at the bottom end of the bolt 1, and the inner diameter of the B spring sheet 5 is clearance fit with the threaded section of the bolt 1;

[0026] The inner diameter of the A spring sheet 3 is 0.1-0.3mm smaller than the smooth rod section at the bottom end of the bolt 1, and needs to be pressed in to form a fixed; The inner diameter of the B spring sheet 5 is 0.5-1mm larger than the threaded section, and can slide freely; When the nut 2 is tightened, the B spring sheet 5 is pushed to the root of the threaded section, the interference fit ensures that the A spring sheet 3 does not fall off, and the clearance fit makes the B spring sheet 5 automatically align the position, and the installation tolerance is ±2mm.

[0027] In the specific embodiment, the height of the A triangular block 4 is greater than the thickness of the A spring sheet 3, and the height of the B triangular block 6 is less than the thickness of the B spring sheet 5;

[0028] The height of the A triangular block 4 is 1.2 times thicker than the A spring sheet 3, for example, the spring sheet is 2mm thick, the triangular block is 2.4mm high, and the installation surface is 0.4mm deep; The height of the B triangular block 6 is 0.8 times the thickness of the B spring sheet 5, for example, the spring sheet is 3mm thick, the triangular block is 2.4mm high, and the threaded gap is half-embedded, the depth of the A triangular block 4 improves the pullout resistance, and the B triangular block 6 is half-embedded to avoid damage to the threads and prolong the service life of the bolt.

[0029] In the specific embodiment, the outer edge of the A spring sheet 3 extends to form a flange structure, and the diameter of the flange structure is greater than the diameter of the bottom surface of the bolt 1 head;

[0030] The outer edge of the A spring sheet 3 is folded outward to form a 3mm wide flange, and the diameter of the flange is 5mm larger than the bottom surface of the bolt head, so that the flange is tightly attached to the bottom surface of the bolt head during installation, preventing the spring sheet from rotating, and the flange structure limits the circumferential displacement of the A spring sheet 3, ensuring that the tip of the A triangular block 4 is always downward.

[0031] In the specific embodiment, a ring-shaped protrusion is provided on the top surface of the B spring sheet 5, and the height of the ring-shaped protrusion is matched with the depth of the groove at the bottom of the nut 2;

[0032] A 1.5mm high ring-shaped protrusion is machined on the top of the B spring sheet 5, and a 1.5mm deep groove is provided at the bottom of the nut 2, so that the protrusion is embedded in the groove after assembly to form a limit, and the transverse movement of the nut 2 is ≤0.2mm, and the protrusion and the groove cooperate to suppress the transverse vibration of the nut 2.

[0033] Working principle: when the nut 2 is screwed, the A spring sheet 3 at the bottom of the bolt 1 is pressed, the surface A triangular block 4 of the A spring sheet 3 is inserted into the installation surface to form anchoring, and the B spring sheet 5 of the threaded section is pressed by the nut 2 to make the B triangular block 6 wedge into the threaded gap; when vibrating, the A spring sheet 3 is elastically deformed to make the A triangular block 4 more deeply into the installation surface, the slope of the B triangular block 6 blocks the nut 2 from rotating, the flange structure of the A spring sheet 3 limits the circumferential displacement, the annular protrusion of the B spring sheet 5 cooperates with the groove of the nut 2 to suppress the transverse deviation, and the bidirectional anti-loosening of vibration enhancement is realized.

[0034] The control mode of the utility model is automatically controlled through the controller, the control circuit of the controller can be realized through simple programming of the person skilled in the art, the power supply also belongs to the public knowledge in the field, and the utility model is mainly used for protecting the mechanical device, so the control mode and the circuit connection of the utility model will not be explained in detail.

[0035] It should be noted that in this document, the terms "comprise", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, so that a process, method, article, or apparatus that comprises a list of elements does not only include those elements, but also includes other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those of ordinary skill in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary drilling rig bolt connection assembly with anti-loosening function, comprising a bolt (1) and a nut (2), characterized in that: The bottom end of the bolt (1) is sleeved with an A spring sheet (3), the surface of the A spring sheet (3) is annularly arranged with A triangular blocks (4), the threaded section of the bolt (1) is sleeved with a B spring sheet (5), and the bottom of the B spring sheet (5) is annularly arranged with B triangular blocks (6).

2. The bolted connection assembly of claim 1, wherein: The inclined surface of the A triangular block (4) is inclined towards the head direction of the bolt (1), and the inclined surface of the B triangular block (6) is inclined towards the tightening direction of the nut (2).

3. The bolted connection assembly with anti-loosening function for a rotary drilling rig according to claim 1, characterized in that: The inner diameter of the A spring sheet (3) is in interference fit with the light rod section of the bottom end of the bolt (1), and the inner diameter of the B spring sheet (5) is in clearance fit with the threaded section of the bolt (1).

4. The bolted connection assembly of claim 1, wherein: The height of the A triangular block (4) is greater than the thickness of the A spring sheet (3), and the height of the B triangular block (6) is less than the thickness of the B spring sheet (5).

5. The bolted connection assembly of claim 1, wherein: The outer edge of the A spring sheet (3) is extended to form a flanging structure, and the diameter of the flanging structure is greater than the diameter of the bottom surface of the head of the bolt (1).

6. The bolted connection assembly of claim 1, wherein: The top surface of the B spring sheet (5) is provided with an annular protrusion, and the height of the annular protrusion is adapted to the groove depth of the bottom of the nut (2).

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