A high-strength composite torsion-shear bolt

Abstract

This utility model relates to the field of bolt technology and discloses a high-strength composite torque-shear bolt, including a bolt head and a threaded rod. The lower end of the threaded rod is connected to the upper end of the bolt head. A nut has an inner hole inside, and the nut is fitted onto the outer surface of the threaded rod through the inner hole. A storage groove is disposed inside the nut and extends through the lower end of the nut. The storage groove is used to store thread-locking adhesive. A slider is slidably connected to the storage groove, and the lower end face of the slider protrudes beyond the lower end face of the nut. This utility model uses the slider to compress the thread-locking adhesive inside the storage groove, causing the adhesive to flow out from the gap between the slider and the storage groove. This allows the thread-locking adhesive to gradually fill the nut, threaded rod, and fastening area. Thus, when the contact area between the nut and the fastening area is small, the thread-locking adhesive can completely fill the area, thereby enhancing the contact area between the nut and the fastening area and improving the fastening effect.

Description

Technical Field

[0001] This utility model relates to the field of bolt technology, specifically a high-strength composite torsion-shear bolt. Background Technology

[0002] Bolts are mechanical parts, cylindrical threaded fasteners that are fitted with nuts. They consist of a head and a threaded shank and require a nut to fasten two parts with through holes. This type of connection is called a bolted connection. If the nut is unscrewed from the bolt, the two parts can be separated, so bolted connections are detachable connections. According to the force applied to the connection, bolts are classified as ordinary bolts and bolts for bolts with reamed holes. According to the head shape, bolts are classified as hexagonal, round, square, countersunk, etc., with hexagonal heads being the most commonly used.

[0003] When installing and tightening existing composite torque-shear bolts, unevenness at the tightening point and a small contact area between the nut and the tightening point can cause the bolt to rotate easily after vibration, resulting in a loss of tightening effect between the nut and the bolt. Although thread-locking adhesive can be used to fill or bond the gap between the nut and the bolt, the thread-locking adhesive on the bolt will flow to the outside of the nut after being squeezed by the nut, resulting in only a small amount of thread-locking adhesive remaining between the nut and the bolt, and the tightening effect is still not guaranteed. Utility Model Content

[0004] This invention provides a high-strength composite torsion shear bolt, which has the beneficial effect of good fastening effect and solves the problem mentioned in the background art that the small contact area between the nut and the fastening point leads to poor fastening effect.

[0005] This utility model provides the following technical solution: a high-strength composite torsion-shear bolt, comprising:

[0006] Bolt head;

[0007] A screw, the lower end of which is connected to the upper end of a bolt head;

[0008] A nut, wherein the nut has an inner hole, and the nut is fitted onto the outer surface of the screw through the inner hole;

[0009] A storage slot is disposed inside the nut and extends through the lower end of the nut; the interior of the storage slot is used to store thread-locking adhesive.

[0010] A slider is slidably connected to the storage tank, and the lower end face of the slider protrudes from the lower end face of the nut. By sliding the slider, the threaded adhesive inside the storage tank is squeezed to the outer surface of the screw, the lower end of the nut, and the inner hole.

[0011] As an optional solution for the high-strength composite torsion shear bolt of this utility model, the lower end of the slider is provided with several guide grooves, and the thread adhesive at the storage groove flows to the lower end face of the nut through the guide grooves.

[0012] As an optional solution for the high-strength composite torsion-shear bolt of this utility model, a sealing ring is installed at the lower end of the nut. The sealing ring is made of rubber and is adapted for installation by extrusion deformation.

[0013] As an optional solution for the high-strength composite torsion shear bolt of this utility model, the cross-section of the storage groove is trapezoidal, the size of the storage groove gradually increases from bottom to top, and a gap is provided between the slider and the storage groove.

[0014] As an optional embodiment of the high-strength composite torsion-shear bolt of this utility model, a washer is also provided on the outer surface of the bolt, the washer is located between the nut and the bolt head, and the diameter of the washer is larger than the diameter of the nut.

[0015] As an optional embodiment of the high-strength composite torsion-shear bolt of this utility model, the outer surface of the screw is further provided with threads, and the nut and the screw are connected by threads.

[0016] This utility model has the following beneficial effects:

[0017] 1. In this high-strength composite torsion shear bolt, when the slider at the lower end of the nut abuts against the fastening point, the fastening point will squeeze the slider upward, causing the slider to squeeze the thread-locking adhesive inside the storage tank. This causes the thread-locking adhesive to flow out from the gap between the slider and the storage tank, allowing the thread-locking adhesive to gradually fill the nut, screw, and fastening point. In this way, when the contact area between the nut and the fastening point is small, the thread-locking adhesive can be completely filled, thereby helping to enhance the contact area between the nut and the fastening point and thus improving the fastening effect.

[0018] 2. In this high-strength composite torsion shear bolt, because the slider will squeeze the thread adhesive inside the storage tank, the thread adhesive overflowing from the storage tank and the slider will only flow inside the sealing ring. This allows most of the thread adhesive to be located at the lower end of the nut and the screw, thereby increasing the connection area between the nut and the fastening point and thus improving the overall connection strength. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a side view of the entire utility model.

[0021] Figure 3 This is a cross-sectional view of the nut of this utility model.

[0022] In the diagram: 1. Bolt head; 2. Screw; 3. Washer; 4. Nut; 5. Storage tank; 6. Slider; 7. Guide channel; 8. Sealing ring; 9. Thread; 10. Inner hole. Detailed Implementation

[0023] 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.

[0024] Example 1

[0025] Please see Figures 1-3 One type of high-strength composite torsion-shear bolt includes:

[0026] Bolt head 1;

[0027] Screw 2, the lower end of screw 2 is connected to the upper end of bolt head 1;

[0028] Nut 4 has an inner hole 10 inside, and nut 4 is sleeved on the outer surface of screw 2 through the inner hole 10;

[0029] Storage groove 5 is located inside the nut 4 and extends through the lower end of the nut 4. The interior of the storage groove 5 is used to store thread adhesive.

[0030] The slider 6 is slidably connected to the storage tank 5, and the lower end face of the slider 6 protrudes from the lower end face of the nut 4. By sliding the slider 6, the threaded adhesive inside the storage tank 5 is squeezed to the outer surface of the screw 2, the lower end of the nut 4 and the inner hole 10.

[0031] The lower end of the slider 6 is provided with several guide grooves 7, and the thread adhesive at the storage tank 5 flows to the lower end face of the nut 4 through the guide grooves 7;

[0032] A washer 3 is also fitted on the outer surface of the screw 2. The washer 3 is located between the nut 4 and the bolt head 1, and the diameter of the washer 3 is larger than the diameter of the nut 4.

[0033] The outer surface of the screw 2 is also provided with threads 9, and the nut 4 is connected to the screw 2 through the threads 9.

[0034] Fill the inside of the storage tank 5 with thread-locking adhesive and insert the slider 6 into the storage tank 5. This seals the lower end of the slider 6 with the storage tank 5. Since the thread-locking adhesive is in paste form, it temporarily adheres the storage tank 5 to prevent it from falling off and separating from the slider 6 when the installation nut 4 is rotated.

[0035] according to Figure 1 and Figure 2 As shown, the screw 2 is inserted into the hole of the fastener, and then the nut 4 is placed on the outer surface of the thread 9 and rotated. When the slider 6 at the lower end of the nut 4 abuts against the fastener, the fastener will squeeze the slider 6 to slide upward, thereby squeezing the thread-locking adhesive inside the storage tank 5. This causes the thread-locking adhesive to flow out from the gap between the slider 6 and the storage tank 5, so that the thread-locking adhesive gradually fills the nut 4, screw 2 and fastener. In this way, when the contact area between the nut and the fastener is small, the thread-locking adhesive can be completely filled, thereby helping to enhance the contact area between the nut and the fastener and thus improving the fastening effect.

[0036] Example 2

[0037] This embodiment is an improvement upon embodiment 1. For details, please refer to [link / reference]. Figures 1-3 A sealing ring 8 is installed at the lower end of the nut 4. The sealing ring 8 is made of rubber and is installed by extrusion deformation.

[0038] The storage tank 5 has a trapezoidal cross-section, and its size gradually increases from bottom to top. A gap is provided between the slider 6 and the storage tank 5.

[0039] according to Figure 2 and Figure 3 As shown, in order to retain most of the thread sealant at the lower end of the nut 4, a sealing ring 8 is provided at the lower end of the nut 4. The protruding dimension of the slider 6 is flush with the lower end face of the sealing ring 8. Therefore, when the slider 6 abuts against the fastener, the sealing ring 8 will inevitably abut against the fastener. Thus, the sealing ring 8 is deformed by the pressure of the fastener to adapt to the downward rotation of the nut 4.

[0040] Furthermore, since the slider 6 will squeeze the thread-locking adhesive inside the storage tank 5, the thread-locking adhesive overflowing from the storage tank 5 and the slider 6 will only flow inside the sealing ring 8. This allows most of the thread-locking adhesive to be located at the lower end of the nut 4 and the screw 2, thereby increasing the connection area between the nut 4 and the fastening point and thus improving the overall connection strength.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-strength composite torque-shear bolt, characterized in that, include: Bolt head (1); Screw (2), the lower end of which is connected to the upper end of bolt head (1); Nut (4), the nut (4) has an inner hole (10) inside, and the nut (4) is sleeved on the outer surface of the screw (2) through the inner hole (10); Storage groove (5), the storage groove (5) is disposed inside the nut (4) and the storage groove (5) extends through the lower end of the nut (4), the interior of the storage groove (5) is used to store thread adhesive; The slider (6) is slidably connected to the storage tank (5), and the lower end face of the slider (6) protrudes from the lower end face of the nut (4). By sliding the slider (6), the threaded adhesive inside the storage tank (5) is squeezed to the outer surface of the screw (2), the lower end of the nut (4), and the inner hole (10).

2. The high-strength composite torque-shear bolt according to claim 1, characterized in that: The lower end of the slider (6) is provided with several guide grooves (7), and the thread adhesive at the storage groove (5) flows to the lower end face of the nut (4) through the guide grooves (7).

3. The high-strength composite torque-shear bolt according to claim 2, characterized in that: A sealing ring (8) is installed at the lower end of the nut (4). The sealing ring (8) is made of rubber and is adapted to be installed by extrusion deformation.

4. The high-strength composite torque-shear bolt according to claim 2, characterized in that: The storage tank (5) has a trapezoidal cross section, and the size of the storage tank (5) gradually increases from bottom to top. A gap is provided between the slider (6) and the storage tank (5).

5. The high-strength composite torque-shear bolt according to claim 1, characterized in that: The outer surface of the screw (2) is also fitted with a washer (3), which is located between the nut (4) and the bolt head (1). The diameter of the washer (3) is larger than the diameter of the nut (4).

6. The high-strength composite torque-shear bolt according to claim 4, characterized in that: The outer surface of the screw (2) is also provided with threads (9), and the nut (4) is connected to the screw (2) by the threads (9).

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