A stainless steel anti-theft bolt assembly

Abstract

The utility model discloses a kind of stainless steel anti-theft bolt assemblies, including screw rod, the head of screw rod is sleeved with screw rod hexagonal sleeve, the end of screw rod is equipped with locking groove, locking structure is installed between the cooperation of screw rod hexagonal sleeve in locking groove;Nut is further threadedly connected on the tail end of the screw rod, nut hexagonal sleeve is further sleeved on the nut, locking assembly for pre-tightening nut to the screw rod is equipped between the inner side wall of the nut hexagonal sleeve and the outer side wall of nut cooperation;The adjacent surface of screw rod hexagonal sleeve and nut is equipped with flat pad and high-strength locking piece respectively.The utility model has the advantages compared with prior art: provide a kind of stainless steel anti-theft bolt assembly and its use method, which can be conveniently operated and used, and can be operated for theft prevention.

Description

Technical Field

[0001] This utility model relates to the technical field of anti-theft bolts for wellhead pumping unit pipelines, specifically to a stainless steel anti-theft bolt assembly. Background Technology

[0002] Currently, wellhead flange connections for oil pumping units typically use ordinary screws, nuts, and standard flat and spring washers. This greatly facilitates oil theft. To address this issue, some manufacturers use conical surfaces instead of hexagonal ones. However, in the complex environment of the field, the requirements for conical contact surfaces are often extremely high. Impacts or contamination of the conical surface can cause difficulties in subsequent maintenance, leading to on-site damage and significant waste. Furthermore, conical sleeve installation tools are easily counterfeited. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the above-mentioned technical defects and provide a stainless steel anti-theft bolt assembly that is easy to operate and use and can be used for anti-theft operations.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a stainless steel anti-theft bolt assembly, including a screw rod, a hexagonal sleeve of the screw rod is sleeved on the head of the screw rod, a locking groove is provided at the end of the screw rod, and a locking structure is installed in the locking groove and the hexagonal sleeve of the screw rod in cooperation.

[0005] The screw is also threaded with a nut at its tail end, and a hexagonal nut sleeve is fitted onto the nut. A locking component for pre-tightening the nut onto the screw is provided between the inner wall of the hexagonal nut sleeve and the outer wall of the nut.

[0006] The adjacent surfaces of the hexagonal sleeve of the screw and the nut are respectively provided with flat washers and high-strength locking plates.

[0007] Preferably, the locking structure includes a special high-strength magnet and an invisible steel pin that are slidably disposed in the locking groove;

[0008] The outer wall of the screw is connected to the locking groove and is provided with a pin groove that can accommodate the sliding of the concealed steel pin.

[0009] The inner wall of the hexagonal screw sleeve is recessed near the locking groove to accommodate a special high-strength magnet, and the inner side wall of the hexagonal screw sleeve is also recessed near the concealed steel pin to accommodate the concealed steel pin.

[0010] Preferably, the end of the special high-strength magnet that is fitted with the invisible steel pin is also recessed with a groove.

[0011] Preferably, the inner wall of the hexagonal sleeve of the screw and the screw are connected by a number of steel balls in a rotating sleeve.

[0012] Preferably, a dustproof ring is fitted between the inner wall of the hexagonal sleeve of the screw and the outer wall of the screw near the flat washer.

[0013] Preferably, the locking assembly includes a locking groove formed on the outer wall of the nut and a locking ball sliding in the locking groove, wherein the inner wall of the hexagonal sleeve of the nut abuts against the locking ball;

[0014] The locking groove has an L-shaped cross-section and multiple sets are provided around the circumference of the nut.

[0015] Preferably, the outer wall of the nut and the inner wall of the hexagonal nut sleeve are connected by a plurality of steel balls in a rotating manner.

[0016] Preferably, a dustproof ring is also fitted between the outer wall of the nut and the inner wall of the hexagonal nut sleeve.

[0017] The advantages of this utility model compared with the prior art are as follows: In this application, the existing screw is improved by adding nuts at its end and tail to cooperate with the hexagonal sleeve of the screw to complete the functions of rotation locking. Based on the locking structure and locking components, the bolt is rotated, tightened and reset in an integrated manner, and then slides relative to each other, so that it can only be disassembled with the help of special tools, thus ensuring the anti-theft effect. Attached Figure Description

[0018] Figure 1 This is a structural diagram of a stainless steel anti-theft bolt assembly.

[0019] Figure 2 A cross-section of a stainless steel anti-theft bolt assembly Figure 1 .

[0020] Figure 3 A cross-section of a stainless steel anti-theft bolt assembly Figure 2

[0021] Figure 4 This is a schematic diagram of the existing technology.

[0022] As shown in the figure: 1. Screw, 2. Screw hexagonal sleeve, 3. Locking groove, 4. Nut, 5. Nut hexagonal sleeve, 6. Flat washer, 7. High-strength locking plate, 8. Special high-strength magnet, 9. Invisible steel pin, 10. Linkage groove, 11. Pin groove, 12. Groove, 13. Steel ball one, 14. Dustproof ring one, 15. Locking steel ball, 16. Locking groove, 17. Steel ball two, 18. Dustproof ring two. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] Combined with appendix Figure 1-3As shown, a stainless steel anti-theft bolt assembly includes a screw 1, a hexagonal sleeve 2 sleeved on the head of the screw 1, a locking groove 3 at the end of the screw 1, and a locking structure installed in the locking groove 3 in cooperation with the hexagonal sleeve 2.

[0025] The screw 1 is also threadedly connected to a nut 4 at its tail end. A hexagonal nut sleeve 5 is fitted onto the nut 4. A locking component for pre-tightening the nut 4 onto the screw 1 is provided between the inner wall of the hexagonal nut sleeve 5 and the outer wall of the nut 4.

[0026] In use, the adjacent surfaces of the hexagonal sleeve 2 and the nut 4 are respectively provided with a flat washer 6 and a high-strength locking piece 7, which are used to contact the upper and lower walls of the flange ring.

[0027] The locking structure includes a special high-strength magnet 8 that slides in the locking groove 3 and an invisible steel pin 9.

[0028] The outer wall of the screw 1 is connected to the locking groove 3 and is provided with a pin groove that can accommodate the sliding of the concealed steel pin 9.

[0029] The inner wall of the hexagonal sleeve 2 is recessed near the locking groove 3 and has a linkage groove 10 that can accommodate a special high-strength magnet 8. The inner side wall of the hexagonal sleeve 2 is also recessed near the concealed steel pin 9 and has a pin groove 11 that can accommodate the concealed steel pin 9. The special high-strength magnet and the concealed steel pin 9 are moved by magnetic force and respectively locked into the corresponding locking grooves to complete the integrated rotation of the hexagonal sleeve 2 and the screw 1.

[0030] The end of the special high-strength magnet 8 that is matched with the invisible steel pin 9 is also provided with a recessed groove 12, which allows the invisible steel pin 9 and the special high-strength magnet 8 to lock together after being reset through the groove 12.

[0031] To ensure its anti-theft effect, the inner wall of the hexagonal sleeve 2 and the screw 1 are rotated and connected by several steel balls 13. At the same time, a dustproof ring 14 is also fitted between the inner wall of the hexagonal sleeve 2 and the outer wall of the screw 1 near the flat washer 6.

[0032] When the special high-strength magnet 8 and the invisible steel pin 9 are not slipped out for integrated locking and fixing, only the hexagonal sleeve 2 of the screw can be rotated without affecting the rotation of the screw 2.

[0033] In one embodiment:

[0034] The locking assembly includes a locking groove 16 formed on the outer wall of the nut 4 and a locking ball 15 sliding in the locking groove 16, wherein the inner wall of the nut hexagonal sleeve 5 abuts against the locking ball 15;

[0035] The locking groove 16 has an L-shaped cross section and multiple sets are arranged around the circumference of the nut 4. The outer wall of the nut 4 and the inner wall of the nut hexagonal sleeve 5 are rotatably connected by several steel balls 17. A dustproof ring 18 is also fitted between the outer wall of the nut 4 and the inner wall of the nut hexagonal sleeve 5.

[0036] By using the locking ball 15 in conjunction with the locking groove 16, the nut can be tightened when rotating forward, and rotates freely when rotating in reverse, and cannot be disassembled.

[0037] In its specific implementation, this utility model includes the following steps:

[0038] S1: After connecting the flat washer 6 to the screw 1, insert it into the oil pipe flange hole;

[0039] S2: The high-strength locking piece 7 is sleeved on the other end of the screw 1, and the mounting nut 4 is tightened;

[0040] S3: Select a hexagonal sleeve with magnetic attraction capability and connect it with the hexagonal sleeve 2 of the screw. The high-strength magnet 8 with attraction characteristics and the invisible steel pin 9 slide to the linkage groove 10 and the pin groove 11 respectively.

[0041] S4: Rotate the hexagonal sleeve to make the screw 1 rotate, and continue to tighten the connection with the oil pipe flange;

[0042] S5: When nut 4 rotates with screw 1, the hexagonal sleeve 5 is held in place by a wrench and the hexagonal sleeve continues to rotate.

[0043] S6: Locking ball 15 and nut 4 are stuck together.

[0044] Specifically:

[0045] Utilizing a magnetic two-pronged approach, the hexagonal sleeve of the screw is fitted with a flat washer and inserted into the oil pipe flange hole. A high-strength locking washer is then placed on the screw. The nut is then manually screwed onto the screw until tightened. A magnetic hexagonal sleeve tool is then used, fitted onto the hexagonal sleeve. A special magnet and a concealed steel pin are aligned; the concealed steel pin is attracted, and the high-strength magnet is forcibly lifted by the magnet on the bottom of the tool. Rotating the tool causes the hexagonal sleeve and the screw to rotate, allowing for increased tightening of the screw. At this point, the nut and the high-strength locking washer are locked to the flange end face, preventing the nut from loosening. As the nut rotates with the screw, a regular wrench is used to hold it in place on the hexagonal sleeve. Rotating the tool causes the locking steel ball to lock the nut, achieving pre-tightening of the screw and nut. After installation, the nut wrench is rotated in the opposite direction to disengage the locking steel ball from the nut, allowing it to rotate freely in the opposite direction. In other words, the nut is pre-tightened when rotated forward and rotates freely in the opposite direction, preventing disassembly and providing anti-disassembly protection.

[0046] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0047] 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 claimed utility model.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0050] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0051] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A stainless steel anti-theft bolt assembly, characterized in that: Includes a screw (1), the head of the screw (1) is fitted with a screw hexagonal sleeve (2), the end of the screw (1) is provided with a locking groove (3), and a locking structure is installed in the locking groove (3) in cooperation with the screw hexagonal sleeve (2); The screw (1) is also threaded with a nut (4) at its tail end. A nut hexagonal sleeve (5) is also fitted on the nut (4). A locking component for pre-tightening the nut (4) to the screw (1) is provided between the inner wall of the nut hexagonal sleeve (5) and the outer wall of the nut (4). The adjacent surfaces of the hexagonal sleeve (2) and the nut (4) are respectively provided with a flat washer (6) and a high-strength locking piece (7).

2. The stainless steel anti-theft bolt assembly according to claim 1, characterized in that: The locking structure includes a special high-strength magnet (8) and an invisible steel pin (9) that are slidably disposed in the locking groove (3); The outer wall of the screw (1) is connected to the locking groove (3) and is provided with a pin groove that can accommodate the sliding of the invisible steel pin (9); The inner wall of the hexagonal sleeve (2) is recessed near the locking groove (3) and has a linkage groove (10) that can accommodate a special high-strength magnet (8). The inner side wall of the hexagonal sleeve (2) is also recessed near the invisible steel pin (9) and has a pin groove (11) that can accommodate the invisible steel pin (9).

3. A stainless steel anti-theft bolt assembly according to claim 2, characterized in that: The end of the special high-strength magnet (8) that is fitted with the invisible steel pin (9) is also provided with a recessed groove (12).

4. A stainless steel anti-theft bolt assembly according to claim 2 or 3, characterized in that: The inner wall of the hexagonal sleeve (2) of the screw is connected to the screw (1) by a number of steel balls (13) rotating together.

5. A stainless steel anti-theft bolt assembly according to claim 4, characterized in that: A dustproof ring (14) is also fitted between the inner wall of the hexagonal sleeve (2) and the outer wall of the screw (1) near the flat washer (6).

6. A stainless steel anti-theft bolt assembly according to claim 1, characterized in that: The locking assembly includes a locking groove (16) formed on the outer wall of the nut (4) and a locking ball (15) sliding in the locking groove (16), and the inner wall of the nut hexagonal sleeve (5) abuts against the locking ball (15); The locking groove (16) has an L-shaped cross section and multiple sets are provided around the circumference of the nut (4).

7. A stainless steel anti-theft bolt assembly according to claim 6, characterized in that: The outer wall of the nut (4) and the inner wall of the nut hexagonal sleeve (5) are rotatably connected by several steel balls (17).

8. A stainless steel anti-theft bolt assembly according to claim 7, characterized in that: A dustproof ring 2 (18) is also fitted between the outer wall of the nut (4) and the inner wall of the nut hexagonal sleeve (5).

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