Stainless steel threaded fastener assembly

Abstract

The utility model relates to bolt fastener technical field discloses a stainless steel thread fixing assembly, including gasket, bolt body and nut with its thread cooperation, the one end of bolt body is integrative fixed connection and has bolt head, the other end of bolt head is provided with big cross groove, the built -in screw is rotatably connected in big cross groove inner wall, the built -in screw outer wall is connected with gasket through adjusting assembly, the other end of bolt body is provided with built -in thread groove, the built -in thread groove inner wall is combined with screw rod with thread cooperation. In the utility model, through adjustable gasket structure promotion fastening close precision, gasket cover bolt body can move freely, rotates small cross groove can drive built -in screw, slider and sliding plate linkage, accurately adjusts gasket axial position, makes it close to the surface of the component to be fixed, eliminates the clearance, and the reinforced bolt locking gasket and sliding plate, avoid vibration displacement, guarantee the uniform stress.

Description

Technical Field

[0001] This utility model relates to the field of bolt fastener technology, and in particular to a stainless steel threaded fastening assembly. Background Technology

[0002] A bolt is a mechanical part, a cylindrical threaded fastener that is fitted with a nut. It consists of a head and a threaded shank, and is used to fasten two parts with through holes. This type of connection is called a bolted connection. In the field of mechanical connections, a bolt, as a cylindrical threaded fastener fitted with a nut, consists of a head and a threaded shank, and needs to be fitted with a nut to achieve a detachable fastening connection between two parts with through holes. A screw, on the other hand, relies on the principle of inclined plane rotation and friction to fasten machine parts. Both are basic threaded connections.

[0003] Currently, in complex working conditions, the position of the washers of traditional bolts is fixed after being fitted, and the axial position cannot be adjusted according to the thickness or surface flatness of the component to be fixed. Uneven force is easily caused by the fitting gap, which can aggravate loosening under equipment vibration and even cause component displacement. It is difficult to meet the requirements of stable fastening and long-term use. Therefore, there is an urgent need for optimized stainless steel threaded fastening components. In view of this technical problem, this application proposes a stainless steel threaded fastening component. Utility Model Content

[0004] The purpose of this invention is to solve the shortcomings of existing technologies where uneven force distribution and easy loosening are caused by gaps in the fit of the gasket. A stainless steel threaded fastening component is proposed, which improves the fastening accuracy through an adjustable gasket structure. The gasket can move freely on the bolt body. Rotating the small cross groove can drive the built-in screw, slider and slide plate to adjust the axial position of the gasket precisely so that it fits tightly against the surface of the part to be fixed and eliminates gaps.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A stainless steel threaded fastening assembly includes a washer, a bolt body, and a nut that is threadedly engaged with it. One end of the bolt body is integrally fixedly connected to a bolt head, and the other end of the bolt head has a large cross groove. An internal screw is rotatably connected to the inner wall of the large cross groove. The outer wall of the internal screw is connected to the washer via an adjustment assembly. The other end of the bolt body has an internal threaded groove, and a combined screw is threadedly engaged with the inner wall of the internal threaded groove. A reinforcing sleeve is fixedly connected to the other end of the combined screw for reinforcing the nut.

[0006] Furthermore, the adjusting assembly includes a slider threadedly connected to the outer wall of the built-in screw, the outer wall of the slider being slidably connected to the inner wall of the bolt body, and sliding plates being fixedly connected to both ends of the outer wall of the slider.

[0007] Furthermore, the inner wall of the slide plate is provided with a mating groove, and a reinforcing bolt is threaded into the inner wall of the mating groove. The outer wall of the reinforcing bolt is threaded to the inner wall of the gasket.

[0008] Furthermore, the outer wall of the bolt body is provided with grooves on both sides, and the outer wall of the slide plate is slidably connected to the inner wall of the grooves.

[0009] Furthermore, the built-in screw has a small cross groove at one end, the shape of which is the same as that of the large cross groove but only one-sixth the size.

[0010] Furthermore, the washer is fitted onto the outer wall of the bolt body and can move freely.

[0011] Furthermore, the inner wall of the reinforcing cylinder has a hollow structure, and the inner diameter of the reinforcing cylinder is larger than the outer diameter of the bolt body.

[0012] This utility model has the following beneficial effects: 1. In this utility model, the fastening and fitting accuracy is improved by the adjustable gasket structure. The gasket can move freely on the bolt body. Rotating the small cross groove can drive the built-in screw, slider and slide plate to adjust the axial position of the gasket precisely so that it fits tightly against the surface of the part to be fixed, eliminating gaps. The gasket and slide plate are locked by the reinforcing bolt to avoid vibration displacement and ensure uniform force distribution. This solves the problems of poor fit and local stress concentration caused by the fixed position of the traditional gasket.

[0013] 2. In this utility model, after the nut is tightened, the combined screw and the built-in threaded groove cooperate to allow the reinforcing cylinder to abut against the nut to achieve secondary reinforcement, improve vibration resistance, and the reinforcing cylinder can also wrap the threaded section of the bolt body. Combined with the stainless steel material, it reduces dust intrusion and corrosion in the coking environment, protects the threads and extends the service life of the component. Attached Figure Description

[0014] Figure 1 This is a perspective view of a stainless steel threaded fastening assembly proposed in this utility model. Figure 2 This is a half-sectional view of the bolt body of a stainless steel threaded fastening assembly proposed in this utility model. Figure 3 This is a schematic diagram of the built-in screw structure of a stainless steel threaded fixing assembly proposed in this utility model.

[0015] Figure 4 This is a schematic diagram of the gasket structure of a stainless steel threaded fixing assembly proposed in this utility model.

[0016] Figure 5 This is a schematic diagram of the bolt body structure of a stainless steel threaded fastening assembly proposed in this utility model.

[0017] Figure 6 This is a schematic diagram of the reinforcing cylinder structure of a stainless steel threaded fixing assembly proposed in this utility model.

[0018] Legend: 1. Bolt body; 2. Bolt head; 3. Large cross groove; 4. Slide groove; 5. Washer; 6. Reinforcing bolt; 7. Nut; 8. Reinforcing sleeve; 9. Slide plate; 10. Slider; 11. Internal screw; 12. Small cross groove; 13. Combination screw; 14. Internal thread groove; 15. Mating groove. Detailed Implementation

[0019] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Reference Figure 1 and Figure 2 This utility model provides an embodiment of a stainless steel threaded fastening assembly, comprising a washer 5, a bolt body 1, and a nut 7 threadedly engaged therewith. One end of the bolt body 1 is integrally and fixedly connected to a bolt head 2. The other end of the bolt head 2 has a large cross groove 3. An internal screw 11 is rotatably connected to the inner wall of the large cross groove 3. The outer wall of the internal screw 11 is connected to the washer 5 via an adjusting assembly. The adjusting assembly includes a slider 10 threadedly connected to the outer wall of the internal screw 11. The outer wall of the slider 10 is slidably connected to the inner wall of the bolt body 1. Slide plates 9 are fixedly connected to both ends of the outer wall of the slider 10. (See reference) Figure 3 and Figure 4 The inner wall of the slide plate 9 is provided with a mating groove 15. The inner wall of the mating groove 15 is threaded with a reinforcing bolt 6. The outer wall of the reinforcing bolt 6 is threaded to the inner wall of the washer 5. The outer wall of the bolt body 1 is provided with sliding grooves 4 on both sides. The outer wall of the slide plate 9 is slidably connected to the inner wall of the sliding groove 4. The inner screw 11 has a small cross groove 12 at one end. The shape of the small cross groove 12 is the same as that of the large cross groove 3, but the size is only one-sixth of it. The washer 5 is fitted on the outer wall of the bolt body 1 and can move freely.

[0021] Specifically, the washer 5, bolt body 1, and nut 7 that mates with it are all made of stainless steel. The size of the groove 4 is less than one-twentieth of the threaded section on the outside of the bolt body 1, so it does not affect the normal threaded engagement of the nut 7 on the outer wall of the bolt body 1. The small cross groove 12 makes it easy for workers to tighten the washer 5 by rotating the built-in screw 11 with tools such as screwdrivers. The sliding plate 9 slides on the inner wall of the groove 4 to guide the movement of the washer 5.

[0022] refer to Figure 5 and Figure 6 The bolt body 1 has an internal threaded groove 14 at the other end. The internal threaded groove 14 has a combined screw 13 threadedly fitted on its inner wall. The other end of the combined screw 13 is fixedly connected to a reinforcing cylinder 8 for reinforcing the nut 7. The inner wall of the reinforcing cylinder 8 is a hollow structure, and the inner diameter of the reinforcing cylinder 8 is larger than the outer diameter of the bolt body 1.

[0023] Specifically, the reinforcing sleeve 8 can completely enclose the threaded section of the bolt body 1 near the side where the nut 7 is unscrewed, and can also protect this threaded section from long-term exposure to external dust, which would affect the service life of the bolt body 1.

[0024] Working principle: When using this bolt, first place the washer 5 on the outer wall of the bolt body 1. Then, according to the thickness required at the location of the through hole in the fixing device, move the washer 5 closer to the bolt head 2. Then, rotate the internal screw 11 through the small cross groove 12 to make the slider 10 slide on the inner wall of the bolt body 1, thereby moving the two sliding plates 9 to the position of the washer 5. Then, rotate the reinforcing bolts 6 on both sides of the washer 5 so that they pass through the mating grooves 15 opened on the inner wall of the washer 5 and connect with the outer wall of the sliding plate 9, thereby combining the slider 10 and the washer 5. Finally, rotate the internal screw 11 to adjust the distance between the washer 5 and the bolt head 2. The shim 5 is separated from the bolt body 1 and connected to the bolt body 1. The axial position of the shim on the bolt body is precisely adjusted so that the shim can fit tightly against the preset contact surface of the part to be fixed, ensuring uniform force during initial tightening and avoiding connection loss caused by local stress concentration. Then, as with existing bolt fixing methods, the bolt body 1 is passed through the preset through hole of the device to be fixed. Then, the nut 7 is connected to the bolt body outer wall threaded on the other side of the through hole. Then, the reinforcing cylinder 8 abuts against the outer wall of the nut 7 through the internal thread groove 14 and the combined screw 13, thereby completing the secondary reinforcement of the nut 7 and improving the tightening effect.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stainless steel threaded fastening assembly, characterized in that, The assembly includes a washer (5), a bolt body (1), and a nut (7) that is threaded to it. One end of the bolt body (1) is integrally fixedly connected to a bolt head (2). The other end of the bolt head (2) is provided with a large cross groove (3). The inner wall of the large cross groove (3) is rotatably connected to an internal screw (11). The outer wall of the internal screw (11) is connected to the washer (5) through an adjustment component. The other end of the bolt body (1) is provided with an internal thread groove (14). The inner wall of the internal thread groove (14) is threadedly fitted with a combination screw (13). The other end of the combination screw (13) is fixedly connected to a reinforcing cylinder (8) for reinforcing the nut (7).

2. The stainless steel threaded fastening assembly according to claim 1, characterized in that: The adjustment assembly includes a slider (10) threadedly connected to the outer wall of the built-in screw (11), the outer wall of the slider (10) being slidably connected to the inner wall of the bolt body (1), and sliding plates (9) being fixedly connected to both ends of the outer wall of the slider (10).

3. A stainless steel threaded fastening assembly according to claim 2, characterized in that: The inner wall of the slide plate (9) is provided with a mating groove (15), and the inner wall of the mating groove (15) is threaded with a reinforcing bolt (6), and the outer wall of the reinforcing bolt (6) is threaded to the inner wall of the gasket (5).

4. A stainless steel threaded fastening assembly according to claim 2, characterized in that: The bolt body (1) has grooves (4) on both sides of its outer wall, and the outer wall of the slide plate (9) is slidably connected to the inner wall of the groove (4).

5. A stainless steel threaded fastening assembly according to claim 2, characterized in that: The built-in screw (11) has a small cross groove (12) at one end. The shape of the small cross groove (12) is the same as that of the large cross groove (3), but its size is only one-sixth of that of the large cross groove (3).

6. A stainless steel threaded fastening assembly according to claim 1, characterized in that: The gasket (5) is fitted onto the outer wall of the bolt body (1) and can move freely.

7. A stainless steel threaded fastening assembly according to claim 1, characterized in that: The inner wall of the reinforcing cylinder (8) is a cavity structure, and the inner diameter of the reinforcing cylinder (8) is larger than the outer diameter of the bolt body (1).

Images