Nut capable of adjusting fastening force

Abstract

The utility model discloses a nut capable of adjusting fastening force, which relates to the technical field of nuts and comprises a nut body, threads I are arranged on the inner wall of the nut body, and sliding holes are circumferentially arranged on the nut body. A user can rotate a rotating sleeve, under the action of threaded connection of a fourth thread and a third thread, the rotating sleeve and an annular plate can move downwards, a wedge-shaped groove is extruded through downward movement of an annular inclined chamfer on the annular plate, and therefore all sliding columns are driven to slide towards the axis of a nut body at the same time; all the second threads are close to the surface of the bolt at the same time, the fastening force of the nut body can be indirectly adjusted and improved through mutual extrusion of the second threads and the threads on the surface of the bolt, all the sliding columns and the second threads can be evenly stressed through simultaneous movement of all the sliding columns, and the stability of the nut body during threaded connection is further improved.

Description

Technical Field

[0001] This utility model belongs to the field of nut technology, and in particular relates to a nut with adjustable fastening force. Background Technology

[0002] A nut is a fastening part that is screwed together with a bolt or thread. It is widely used in various mechanical equipment and structures. Because some nuts are installed in harsh environments, they often loosen after a certain period of time. Therefore, it is necessary to adjust the tightening force of the nut during installation.

[0003] Radial adjusting nuts are common types of nuts that allow for adjustable tightening force. They are made by incorporating adjustable structures, such as eccentric wheels or wedges, in the radial direction of the nut. Rotating the adjusting components changes the radial clearance between the nut and the bolt, thereby indirectly adjusting the tightening force. However, most radial adjusting nuts currently have multiple sets of rotating adjusting components and wedges. Installers need to rotate each adjusting component individually during installation, which is not only cumbersome but also makes it impossible to ensure that each wedge is evenly stressed.

[0004] Therefore, it is necessary to improve the existing technology to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide an adjustable fastening nut. By moving the annular chamfered edge of the ring plate downwards, the wedge groove is squeezed, thereby driving all the sliding columns to slide simultaneously toward the axis of the nut body. This allows all the threads to approach the bolt surface at the same time, solving the problem that in the use of existing radial adjusting nuts, the installer needs to rotate each rotating adjustment component individually, which is not only cumbersome to operate but also cannot guarantee the uniform force on each wedge.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model relates to an adjustable fastening force nut, comprising a nut body, wherein the inner wall of the nut body has a threaded first thread, and the nut body has circumferentially arranged sliding holes, each of which is slidably connected to a sliding post, and each sliding post has a threaded second thread connected to one end near the axis of the nut body. The upper end of the outer wall of the nut body has an annular groove, and each sliding post has a wedge-shaped groove. The annular groove contains an annular plate that can move up and down, and the lower end of the outer wall of the annular plate has an annular chamfer.

[0008] Furthermore, the second thread is connected and fits into the first thread.

[0009] Furthermore, the inner wall of the annular groove near the axis of the nut body is provided with a third thread, and a rotating sleeve is threadedly connected to the third thread. The lower end of the outer wall of the rotating sleeve is fixedly connected to the upper end of the outer wall of the annular plate. The inner wall of the rotating sleeve is provided with a fourth thread, and the fourth thread is threadedly connected to the third thread.

[0010] Furthermore, a rotating block is fixedly installed on the upper end of the outer wall of the rotating sleeve.

[0011] Furthermore, a cross-shaped groove is provided on the outer wall of the nut body and at each of the sliding holes, and a cross-shaped sliding block is fixedly installed at the end of each sliding post away from the second thread, and the cross-shaped sliding block is slidably connected to the cross-shaped groove.

[0012] This utility model has the following beneficial effects:

[0013] 1. When this utility model is in use, after the nut body is connected to the external thread, the user can rotate the sleeve. Under the action of the threaded connection of thread four and thread three, the rotating sleeve and the annular plate will move downward. The downward movement of the annular chamfer on the annular plate will squeeze the wedge groove, thereby driving all the sliding columns to slide towards the axis of the nut body at the same time, so that all the thread two will approach the bolt surface at the same time. The mutual squeezing between the thread two and the thread on the bolt surface can indirectly adjust and improve the fastening force of the nut body. Furthermore, the simultaneous movement of all the sliding columns can make all the sliding columns and thread two evenly stressed, further improving the stability of the nut body when threaded.

[0014] 2. When in use, this utility model can limit the position of the sliding column in the sliding hole by sliding the cross-shaped sliding block and the cross-shaped countersink, preventing the sliding column and the second thread from rotating randomly in the sliding hole and destroying the continuity of the first thread on the nut body, thereby improving the practicality of the device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the annular sinkhole of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the four threads of this utility model;

[0020] Figure 5 This is a schematic diagram of the sliding column of this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 100. Nut body; 110. Thread 1; 120. Sliding hole; 130. Annular countersunk groove; 200. Sliding column; 210. Thread 2; 300. Wedge groove; 310. Annular plate; 320. Annular chamfer; 400. Thread 3; 410. Rotating sleeve; 420. Thread 4; 500. Rotating block; 600. Cross-shaped countersunk groove; 610. Cross-shaped sliding block. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Please see Figure 1-4 As shown, this utility model is an adjustable fastening nut, including a nut body 100, the inner wall of the nut body 100 is provided with a thread 110, the thread 110 is used to connect with the thread of an external bolt. The nut body 100 has circumferentially arranged sliding holes 120, and each sliding hole 120 is slidably connected to a sliding post 200. Each sliding post 200 is connected to a threaded second 210 at one end near the axis of the nut body 100. The upper end of the outer wall of the nut body 100 has an annular groove 130, and each sliding post 200 has a wedge-shaped groove 300. The annular groove 130 is provided with an annular plate 310 that can move up and down. The lower end of the outer wall of the annular plate 310 has an annular chamfer 320. When the nut body 100 is threadedly connected to the outside, the downward movement of the annular chamfer 320 on the annular plate 310 compresses the wedge-shaped groove 300, thereby driving all the sliding posts 200 to slide towards the axis of the nut body 100 at the same time, so that all the threads 210 approach the bolt surface at the same time. The mutual compression between the threads 210 and the threads on the bolt surface can indirectly adjust and increase the tightening force of the nut body 100. Thread 210 and thread 110 are connected and fit together, thus ensuring the smooth rotation of the nut body 100 when it is connected to the bolt thread.

[0025] Among them, such as Figure 4As shown, the annular groove 130 has a threaded third 400 on its inner wall near the axis of the nut body 100. A rotating sleeve 410 is threaded onto the threaded third 400. The lower end of the outer wall of the rotating sleeve 410 is fixedly connected to the upper end of the outer wall of the annular plate 310. The inner wall of the rotating sleeve 410 has a threaded fourth 420, which is threadedly connected to the threaded third 400. When the rotating sleeve 410 rotates, the threaded connection between the threaded fourth 420 and the threaded third 400 causes the rotating sleeve 410 to move downward, thereby driving the annular plate 310 to move downward. A rotating block 500 is fixedly installed on the upper end of the outer wall of the rotating sleeve 410, allowing the user to easily rotate the rotating sleeve 410 by rotating the rotating block 500.

[0026] Among them, such as Figure 1-5 As shown, a cross-shaped countersunk groove 600 is provided on the outer wall of the nut body 100 and at each sliding hole 120. A cross-shaped sliding block 610 is fixedly installed at the end of each sliding post 200 away from the second thread 210. The cross-shaped sliding block 610 is slidably connected to the cross-shaped countersunk groove 600. Through the slidable connection between the cross-shaped sliding block 610 and the cross-shaped countersunk groove 600, the position of the sliding post 200 in the sliding hole 120 can be limited, preventing the sliding post 200 and the second thread 210 from rotating arbitrarily in the sliding hole 120 and disrupting the continuity of the first thread 110 on the nut body 100.

[0027] A specific application of this embodiment is as follows: In use, the sliding post 200 is first inserted into the corresponding sliding hole 120. Thread 110 is used for threaded connection between the nut body 100 and the external bolt. Thread 210 is connected and engaged with thread 110 to ensure smooth rotation of the nut body 100 when threaded with the bolt. After the nut body 100 is threadedly connected to the external bolt, the user can easily rotate the rotating sleeve 410 by rotating the rotating block 500. When the rotating sleeve 410 rotates, the threaded connection of thread 420 and thread 400 causes the rotating sleeve 410 to move downwards, thereby driving the annular plate 310 to move downwards. The downward movement of the annular chamfer 320 on the annular plate 310 compresses the wedge groove 300, thereby causing all the sliding pillars 200 to slide simultaneously toward the axis of the nut body 100, allowing all the threads 210 to approach the bolt surface at the same time. The mutual compression between the threads 210 and the threads on the bolt surface can indirectly adjust and increase the tightening force of the nut body 100. At the same time, the sliding block 610 can slide and connect with the cross-shaped countersunk groove 600 to limit the position of the sliding pillars 200 in the sliding hole 120, preventing the sliding pillars 200 and threads 210 from rotating arbitrarily in the sliding hole 120 and disrupting the continuity of the threads 110 on the nut body 100.

[0028] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. A nut with adjustable tightening force, comprising a nut body (100), characterized in that: The nut body (100) has a threaded first (110) on its inner wall and sliding holes (120) arranged in a circular pattern on its surface. Each sliding hole (120) is slidably connected to a sliding post (200). Each sliding post (200) is connected to a threaded second (210) at one end near the axis of the nut body (100). The upper end of the outer wall of the nut body (100) has an annular groove (130). Each sliding post (200) has a wedge-shaped groove (300). The annular groove (130) has an annular plate (310) that can move up and down inside it. The lower end of the outer wall of the annular plate (310) has an annular chamfer (320).

2. The adjustable fastening force nut according to claim 1, characterized in that, The second thread (210) is connected and fits into the first thread (110).

3. The adjustable fastening force nut according to claim 1, characterized in that, The annular groove (130) has a threaded third (400) on its inner wall near the axis of the nut body (100). A rotating sleeve (410) is threaded onto the threaded third (400). The lower end of the outer wall of the rotating sleeve (410) is fixedly connected to the upper end of the outer wall of the annular plate (310). A threaded fourth (420) is provided on the inner wall of the rotating sleeve (410). The threaded fourth (420) is threaded onto the threaded third (400).

4. The adjustable fastening force nut according to claim 3, characterized in that, A rotating block (500) is fixedly installed on the upper end of the outer wall of the rotating sleeve (410).

5. The adjustable fastening force nut according to claim 1, characterized in that, A cross-shaped groove (600) is provided on the outer wall of the nut body (100) and at each of the sliding holes (120). A cross-shaped sliding block (610) is fixedly installed at the end of each sliding post (200) away from the thread (210). The cross-shaped sliding block (610) is slidably connected to the cross-shaped groove (600).

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