Split type stainless steel nut

Abstract

The utility model provides a split type's stainless steel nut, it is designed to solve the problem of the existing split type nut tightness, stability is poor and inconvenient installation, including the symmetrical setting semicircular cylindrical first nut and second nut, its connecting surface is equipped with the bump and recess that mutually cooperate respectively, the screw rod of inside fastening mechanism one end is fixed in first nut draw -in groove, the other end extends to second nut cavity, cooperates magnetic adsorption piece and inlay piece and enhances the connection stability, utilizes the bump and recess preliminary positioning and sticks together, the fastening mechanism of magnetic component adsorption and screw thread connection, the tightness of nut is improved obviously, prevents the loosening and falls off effectively, adapts complex working condition such as vibration, impact, split type structure cooperation screw thread connection's rotating piece, installation and removal are convenient, improve work efficiency, be applicable to fastener device under different scene, provide high reliability and convenient solution for each industry bolt connection.

Description

Technical Field

[0001] This utility model relates to the field of nut technology, and in particular to a split stainless steel nut. Background Technology

[0002] Split nuts, as a new type of basic mechanical fastener, emerged when traditional one-piece nuts could not meet the needs of installation in confined spaces, high-precision assembly, and stable connections under complex working conditions. With the rapid development of industries such as machinery manufacturing, electronics, and aerospace, higher requirements have been placed on the performance and applicability of nuts. The continuous evolution of split nut technology reflects the industrial production's demand for high-performance and multi-functional nuts.

[0003] The utility model with authorization announcement number CN208619619U relates to a split nut assembly, which includes two completely separate first and second nuts. The first and second nuts have the same pitch and lead and cooperate or move on the same threaded shaft. This utility model has the advantages of good gap elimination effect, long service life, and convenient disassembly. However, the split components of this utility model are connected by simple mechanical cooperation, which is prone to loosening and displacement during long-term use, resulting in a decrease in the tightness of the connection and failing to effectively ensure a stable and reliable connection between the nut and the bolt.

[0004] To improve tightness, a utility model with authorization announcement number CN209228971U discloses a "split-type lead screw nut," including a misaligned nut, a reverser, a lead screw, and ball bearings. The misaligned nut is sleeved on the lead screw and includes a left nut and a right nut. The right part of the left nut has a left semi-circular groove, and the left part of the right nut has a right semi-circular groove. The left semi-circular groove has a left helical groove, and the right semi-circular groove has a right helical groove. The reverser is located in the right semi-circular groove. At the same time, the left and right nuts are detachably fixed together, and the ball bearings are engaged in the closed helical groove formed by the left and right helical grooves. This utility model is easy to manufacture and has a low cost. However, the stability of the connection structure of this utility model is poor, and it lacks effective anti-loosening and anti-vibration measures, making the nut prone to loosening or even falling off during use, posing a safety hazard to equipment operation and increasing equipment maintenance costs and repair risks.

[0005] In summary, existing split-type nut assemblies typically have the following disadvantages: 1) Insufficient tightness: Some existing split nut devices rely on simple mechanical connections between the split parts. During long-term use, they are prone to loosening and displacement due to factors such as vibration and temperature changes. This leads to a decrease in the tightness of the connection and makes it impossible to effectively ensure a stable and reliable connection between the nut and the bolt, which affects the overall production efficiency and product quality. 2) Poor stability: Some existing split nut devices are designed for complex working conditions, such as alternating loads and impact loads. Their connection structure has poor stability and lacks effective anti-loosening and anti-vibration measures, which makes the nuts easy to loosen or even fall off during use, posing safety hazards to equipment operation and increasing equipment maintenance costs and repair risks. 3) Inconvenient installation: Some existing split nut devices have cumbersome installation operations. The connection and fixing of their split parts require special tools, and the installation steps are complicated, requiring high operating skills from the installers, which prolongs the equipment assembly and maintenance time and reduces work efficiency. Summary of the Invention

[0006] The purpose of this invention is to solve the problems in the prior art by proposing a split stainless steel nut that can solve the problems of insufficient tightness, poor stability and inconvenient installation.

[0007] To achieve the above objectives, this utility model proposes a split-type stainless steel nut, comprising a first nut, a second nut, a fastening mechanism, and a rotating component. The first and second nuts are both semi-cylindrical and symmetrically arranged. The inner arc surface of the first nut has a first internal thread, and the inner arc surface of the second nut has a second internal thread. The connecting surfaces of the first and second nuts are opposite to each other. The connecting surface of the first nut has a protrusion, and the connecting surface of the second nut has a corresponding groove. The protrusion and groove are fitted together. The first nut has a fastening mechanism inside, which includes a screw, a cavity, and a slot. The outer peripheral sidewall of the first nut has a slot, and the screw is fixed to the slot. The other end of the screw extends into the cavity of the second nut. The first nut has a slot along its central axis, and the rotating component is threadedly connected to the slot.

[0008] Preferably, the fastening mechanism further includes a magnetic adsorption block and a magnetic interlocking block, with the magnetic interlocking block embedded in the end of the screw, and the magnetic adsorption block disposed in the cavity of the second nut, the magnetic adsorption block and the magnetic interlocking block cooperating with each other.

[0009] Preferably, the outer periphery of the first nut is provided with a through hole, the axis of the through hole is perpendicular to the axis of the first nut, and the shape and size of the slot are adapted to the rotating part.

[0010] Preferably, the rotating component includes a rotating head, a rotating handle, and an external thread, wherein the rotating head and the rotating handle are integrally formed, and the external thread is located on the outside of the rotating head.

[0011] Preferably, the slot has a threaded section, the pitch and diameter of which match the external thread of the rotating component, and the rotating component is threadedly connected to the slot.

[0012] Preferably, the first nut further includes a washer, and the connecting surface of the first nut is provided with a washer, the washer being located around the protrusion.

[0013] Preferably, the first nut and the second nut are detachable, and the screw is detachably connected to the slot.

[0014] The beneficial effects of this utility model are: 1) Enhanced tightness: By setting a protrusion on the first nut connection surface and a corresponding groove on the second nut, the protrusion and groove are installed together, so that the separate parts can be accurately positioned and tightly fitted during the initial assembly; the magnetic adsorption block and magnetic interlocking block in the fastening mechanism cooperate with each other to further enhance the tightness of the connection, effectively solving the problem of insufficient tightness in other patents, ensuring that the nut can always maintain a good connection state during long-term use, and meeting the assembly requirements of high-precision equipment; 2) Improved Stability: The screw of the fastening mechanism is fixed in the slot, and the other end extends into the cavity of the second nut. The screw is rotated by a rotating component, achieving a tight connection between the first and second nuts, forming a stable connection structure that effectively resists complex working conditions such as vibration and impact. The cooperation between the magnetic adsorption block and the magnetic interlocking block also adds extra stability to the connection, preventing the nuts from loosening and falling off during use. This solves the problem of poor stability found in other patents, improving the safety and reliability of equipment operation. 3) Easy installation: The split structure allows the nut to be flexibly assembled in a small space. The threaded connection design between the rotating parts and the slot makes the installation and disassembly operations simple and quick, without the need for special tools, which greatly improves the installation efficiency, reduces the cost of use, and overcomes the shortcomings of other patents in terms of poor installation convenience. It is suitable for various mechanical assembly and maintenance scenarios.

[0015] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic cross-sectional view of the structure of this utility model; Figure 2 This is a schematic diagram of the rotating component structure of this utility model; Figure 3This is a schematic diagram of the external structure of the first nut of this utility model; Figure 4 This is a schematic diagram of the internal structure of the first nut of this utility model.

[0017] The following numbers are used in the diagram: 1-First nut; 11-First internal thread; 2-Second nut; 21-Second internal thread; 3-Connecting surface; 31-Protrusion; 32-Groove; 33-Washer; 4-Fastening mechanism; 41-Screw; 42-Magnetic interlocking block; 43-Cavity; 44-Magnetic adsorption block; 45-Slot; 5-Through hole; 6-Slot; 7-Rotating component; 71-Rotating head; 72-Rotating handle; 73-External thread. Detailed Implementation

[0018] Example 1: See Figures 1 to 4 This utility model relates to a split-type stainless steel nut, such as... Figure 1 As shown, the device includes a first nut 1, a second nut 2, a fastening mechanism 4, and a rotating component 7. The first nut 1 and the second nut 2 are both semi-cylindrical and symmetrically arranged. The inner arc surface of the first nut 1 has a first internal thread 11, and the inner arc surface of the second nut 2 has a second internal thread 21. The connecting surfaces 3 of the first nut 1 and the second nut 2 are opposite to each other. The connecting surface 3 of the first nut 1 has a protrusion 31, and the corresponding position of the connecting surface 3 of the second nut 2 has a groove 32. The protrusion 31 and the groove 32 are fitted together. The fastening mechanism 4 is located inside the first nut 1. Figure 3 and Figure 4 As shown, the fastening mechanism 4 includes a screw 41, a cavity 43, and a slot 45. The first nut 1 has a slot 45 on its outer peripheral sidewall, and the screw 41 is fixed to the slot 45. The other end of the screw 41 extends into the cavity 43 of the second nut 2. Figure 2 As shown, the first nut 1 has a slot 6 along the central axis, and the rotating part 7 is threadedly connected to the slot 6.

[0019] The fastening mechanism 4 further includes a magnetic adsorption block 44 and a magnetic fitting block 42. The magnetic fitting block 42 is embedded in the end of the screw 41. The magnetic adsorption block 44 is disposed in the cavity 43 of the second nut 2, and the magnetic adsorption block 44 and the magnetic fitting block 42 cooperate with each other. A through hole 5 is provided on the outer periphery of the first nut 1. The axis of the through hole 5 is perpendicular to the axis of the first nut 1. The shape and size of the slot 6 are adapted to the rotating component 7. The rotating component 7 includes a rotating head 71, a rotating handle 72, and an external thread 73. The rotating head 71 and the screw 72 are connected to the rotating handle 73. The handle 72 is a one-piece molded structure, and the external thread 73 is provided on the outside of the rotating head 71; the slot 6 is provided with a threaded section, and the pitch and diameter of the threaded section match the external thread 73 of the rotating part 7. The rotating part 7 is threadedly connected to the slot 6; the first nut 1 also includes a washer 33, and the connecting surface 3 of the first nut 1 is provided with a washer 33, which is located around the protrusion 31; the first nut 1 and the second nut 2 are detachable structures, and the screw 41 is detachably connected to the slot 45.

[0020] In this embodiment, the first nut 1 and the second nut 2 are both semi-cylindrical, the protrusion 31 is a rectangular protrusion that fits tightly with the groove 32 on the connecting surface 3 of the second nut 2, the rotating part 7 is a cylindrical knob, the rotating head 71 is a disc, the rotating handle 72 is cylindrical, the external thread 73 is a triangular thread, the washer 33 is made of Teflon material, the screw 41 in the fastening mechanism 4 is cylindrical and fits tightly with the slot 45, and the threaded section is a triangular thread that matches the external thread 73 of the rotating part 7.

[0021] The cylindrical design of the first nut 1 and the second nut 2 makes the nuts more flexible during installation and can adapt to installation requirements in different directions. The cooperation between the rectangular protrusion 31 and the groove 32 improves the tightness of the connection and the anti-rotation performance. The cylindrical knob rotating part 7 is easy to operate manually without the need for tools, which improves the convenience of installation and disassembly. The triangular thread has good self-locking performance and can effectively prevent the nut from loosening. The Teflon gasket 33 has excellent corrosion resistance and lubrication, which further enhances the sealing and corrosion resistance of the connection. The 316L stainless steel material is suitable for corrosive environments and is suitable for bolt connections in highly corrosive environments such as chemical and marine environments, such as chemical pipeline flange connections and marine equipment component fastening. Its good corrosion resistance and sealing performance ensure the reliability and stability of the nut in harsh environments.

[0022] Example 2: This embodiment is basically the same as Embodiment 1, except that: the first nut 1 and the second nut 2 are both hexagonal prism half-blocks, the connecting surface 3 is flat and smooth, the protrusion 31 is a semi-circular protrusion, the size of which is adapted to the groove 32 on the connecting surface 3 of the second nut 2, the rotating part 7 is in the shape of a hexagonal bolt, the rotating head 71 is hexagonal prism, the rotating handle 72 is cylindrical, the external thread 73 is a trapezoidal thread, the washer 33 is made of rubber, the screw 41 in the fastening mechanism 4 is hexagonal prism, the thread section that fits tightly with the slot 45 is a trapezoidal thread that matches the external thread 73 of the rotating part 7, and the material is 304 stainless steel, which has good corrosion resistance and mechanical properties.

[0023] In this embodiment, the hexagonal prism-shaped first nut 1 and second nut 2 increase the contact area of ​​the nuts and improve the stability of the connection. The semi-circular protrusion 31 and the groove 32 fit tightly to ensure the tightness of the nut connection. The hexagonal bolt-shaped rotating part 7 facilitates tightening with tools such as wrenches, improving installation efficiency. The trapezoidal thread has high strength and stability, suitable for bearing large loads. The rubber gasket 33 enhances the sealing of the connection surface and prevents liquid or impurities from seeping in. The 304 stainless steel material ensures the corrosion resistance and mechanical strength of the nuts. It is suitable for bolted connection occasions requiring high stability and sealing in industries such as machinery manufacturing and automobile assembly, such as the fastening of engine parts, chassis parts, etc.

[0024] Example 3: This embodiment is basically the same as embodiment 1, except that: the first nut 1 and the second nut 2 are both elliptical cylindrical half-pieces, the protrusion 31 is a wedge-shaped protrusion, the size of which is adapted to the groove 32 on the connecting surface 3 of the second nut 2, the rotating part 7 is a disc with finger grooves, the rotating head 71 is a disc, the rotating handle 72 is cylindrical, the external thread 73 is a sawtooth thread, the screw 41 in the fastening mechanism 4 is cylindrical and fits tightly with the slot 45; the thread section adopts a sawtooth thread, which matches the external thread 73 of the rotating part 7.

[0025] In this embodiment, the elliptical cylindrical first nut 1 and second nut 2 allow the nuts to better adapt to irregular installation spaces during installation, increasing their flexibility. The wedge-shaped protrusion 31 and the groove 32 improve the tightness of the connection and anti-rotation performance, ensuring that the nuts will not shift under force. The disc-shaped rotating part 7 with finger grooves facilitates manual operation without the need for tools, improving the convenience of installation and disassembly. The sawtooth thread has good self-locking performance, which can effectively prevent the nuts from loosening, while improving the strength and wear resistance of the thread. It is suitable for bolted connections in harsh environments such as marine engineering and chemical equipment, such as the connection of structural components of marine platforms and the fastening of corrosion-resistant components of chemical equipment.

[0026] Working principle: During installation, the first nut 1 and the second nut 2 are first placed on both sides of the bolt to be connected, so that the external thread of the bolt corresponds to the thread of the inner arc surface of the first nut 1 and the second nut 2. The protrusion 31 on the connecting surface 3 of the first nut 1 engages with the corresponding groove 32 of the second nut 2, initially achieving alignment and positioning. The screw 41 is fixed in the slot 45 on the outer peripheral side wall of the first nut 1, and its other end extends into the cavity 43 of the second nut 2. During tightening, the screw 41 rotates in the cavity 43, causing the first nut 1 and the second nut 2 to move closer to each other. A magnetic interlocking block 42 is embedded in the end of the screw 41, and a magnetic interlocking block 42 is installed in the cavity 43 of the second nut 2. During the tightening process, the magnetic adsorption block 44 and the magnetic interlocking block 42 attract each other and fit tightly together, thereby further enhancing the connection stability between the first nut 1 and the second nut 2 and ensuring that they will not loosen under conditions such as vibration or impact. By rotating the rotating handle 72 of the rotating component 7, the screw 41 rotates in the cavity 43, causing the first nut 1 and the second nut 2 to move closer or further apart, thereby achieving the tightening or movement of the nuts. The design of the rotating component 7 makes the operation simple and efficient. The connecting surface 3 of the first nut 1 is provided with a gasket 33. The gasket 33 around the protrusion 31 is used to enhance the sealing and pressure resistance of the connecting surface and prevent liquid or impurities from seeping into the connecting part.

[0027] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A split-type stainless steel nut, comprising a first nut (1), a second nut (2), a fastening mechanism (4), and a rotating component (7), characterized in that: The first nut (1) and the second nut (2) are both semi-cylindrical and symmetrically arranged. The inner arc surface of the first nut (1) is provided with a first internal thread (11), and the inner arc surface of the second nut (2) is provided with a second internal thread (21). The connecting surfaces (3) of the first nut (1) and the second nut (2) are arranged opposite to each other. The connecting surface (3) of the first nut (1) is provided with a protrusion (31), and the connecting surface (3) of the second nut (2) is provided with a groove (32) at the corresponding position. The protrusion (31) and the groove (32) Installation: The first nut (1) is provided with a fastening mechanism (4), which includes a screw (41), a cavity (43) and a slot (45). The outer peripheral side wall of the first nut (1) is provided with a slot (45), the screw (41) is fixed in the slot (45), and the other end of the screw (41) extends into the cavity (43) of the second nut (2). The first nut (1) is provided with a slot (6) along the central axis, and the rotating part (7) is threadedly connected to the slot (6).

2. A split-type stainless steel nut as described in claim 1, characterized in that: The fastening mechanism (4) further includes a magnetic adsorption block (44) and a magnetic interlocking block (42). The end of the screw (41) is embedded with a magnetic interlocking block (42). The magnetic adsorption block (44) is disposed in the cavity (43) of the second nut (2). The magnetic adsorption block (44) and the magnetic interlocking block (42) cooperate with each other.

3. A split-type stainless steel nut as described in claim 1, characterized in that: The first nut (1) has a through hole (5) on its outer periphery. The axis of the through hole (5) is perpendicular to the axis of the first nut (1). The shape and size of the slot (6) are adapted to the rotating part (7).

4. A split-type stainless steel nut as described in claim 1, characterized in that: The rotating component (7) includes a rotating head (71), a rotating handle (72), and an external thread (73). The rotating head (71) and the rotating handle (72) are integrally formed, and the external thread (73) is located on the outside of the rotating head (71).

5. A split-type stainless steel nut as described in claim 1, characterized in that: The slot (6) is provided with a threaded section, the pitch and diameter of which match the external thread (73) of the rotating part (7), and the rotating part (7) is threadedly connected to the slot (6).

6. A split-type stainless steel nut as described in claim 1, characterized in that: The first nut (1) also includes a washer (33), and the connecting surface (3) of the first nut (1) is provided with a washer (33), which is located around the protrusion (31).

7. A split-type stainless steel nut as described in claim 1, characterized in that: The first nut (1) and the second nut (2) are detachable structures, and the screw (41) and the slot (45) are detachably connected.

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