High-assembly-precision torsion shear bolt

Abstract

The utility model discloses a torsion shear type bolt of high assembly precision, including bolt and bolt head, the bolt top installs the limit ring, is equipped with the threaded rod on the limit ring, and the bolt head is connected with the threaded rod threadedly, is equipped with T type groove in the threaded rod, and the T type groove is equipped with two symmetrical limit blocks of sliding joint, and the T type groove is equipped with the upper pressure block of sliding joint, and the upper pressure block is cooperated and is set with the limit block, is equipped with the slot of the limit block insertion on the bolt head, and the bolt head bottom installs the limit ring. Through the cooperation setting of upper pressure block and limit block, can extrude limit block after the bolt head installation, make it card in T type groove and slot, make bolt head can with limit ring common to object and carry out extrusion limit, and threaded connection further improves the stability, through the elastic pusher card in the card slot, make bolt head not easy to rotate after installation, avoid bolt head and take place loose because of vibration, protect limit ring simultaneously, avoid its corrosion.

Description

Technical Field

[0001] This utility model relates to the technical field of high-precision torque-shear bolts, and in particular to a high-precision torque-shear bolt. Background Technology

[0002] In existing technologies, such as CN220816215U high-precision torque-shear bolts, the bolt head is replaced using rubber blocks and inserts, thereby improving the overall strength of the bolt. However, when the bolt is exposed to high temperatures in the open air, the rubber blocks are prone to softening and may even fall off automatically. Furthermore, the object is locked between the washer and the retaining ring, with only the retaining ring limiting the bolt head, which may actually reduce the bolt strength. Utility Model Content

[0003] Therefore, it is necessary to provide a torsion shear bolt with high assembly precision to address the aforementioned technical problems of low practicality and low overall strength.

[0004] To achieve the above objectives, this utility model provides a high-precision torque-shear bolt, comprising a bolt and a bolt head. A limit ring is installed on the top of the bolt, and a threaded rod is installed on the limit ring. The bolt head is threadedly connected to the threaded rod, which has a T-slot. Two symmetrically arranged limit blocks are slidably engaged in the T-slot, and an upper pressure block is slidably engaged in the T-slot. The upper pressure block and the limit blocks are configured to cooperate. The bolt head has a slot for the limit blocks to be inserted into, and a limit ring is installed at the bottom of the bolt head. The limit ring has several slots, and several elastic paddles are installed on the limit ring, with the elastic paddles cooperating with the slots.

[0005] Preferably, a mating block is slidably engaged within the T-slot, and an elastic component is installed on the limiting block, with the output end of the elastic component connected to the mating block.

[0006] Preferably, the limiting block is provided with an inclined groove, and an inclined block is installed on the upper pressing block, with the inclined block slidingly engaging in the inclined groove.

[0007] Preferably, a rotating block is snapped onto the top of the threaded rod, and the rotating block is rotatably connected to the upper pressure block. The top view area of ​​the upper pressure block is smaller than the top view area of ​​the rotating block, and the limiting ring is chamfered.

[0008] Preferably, the limiting ring is provided with a guide slope.

[0009] Preferably, the bottom of the elastic lever is chamfered.

[0010] Compared with existing technologies, this technical solution has at least one of the following beneficial effects: 1. By using the combination of the upper pressure block and the limiting block, after the bolt head is installed, the upper pressure block can press the limiting block, causing it to lock into the T-slot and slot, so that the bolt head and the limiting ring can work together to press and limit the object. The threaded connection further improves the stability. 2. The elastic tab is locked in the slot, making it difficult for the bolt head to rotate after installation, thus preventing the bolt head from loosening due to vibration. At the same time, it protects the limit ring from corrosion. Attached Figure Description

[0011] Figure 1 This is a front sectional view of an embodiment of the present invention; Figure 2 This is a partial perspective view of an embodiment of the present invention; Figure 3 This is a perspective view of an embodiment of the present utility model; In the diagram, 1. Bolt; 2. Bolt head; 3. Limiting ring; 4. Threaded rod; 5. T-slot; 6. Limiting block; 7. Upper pressure block; 8. Slot; 9. Limiting ring; 10. Slot; 11. Elastic lever; 12. Mating block; 13. Elastic component; 14. Inclined groove; 15. Inclined block; 16. Rotating block; 17. Guide inclined surface. Detailed Implementation

[0012] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0013] Please see Figures 1 to 3 This application provides a high-precision torque-shear bolt, including a bolt 1 and a bolt head 2. A limit ring 3 is fixedly installed on the top of the bolt 1, and a threaded rod 4 is fixedly installed on the limit ring 3. The bolt head 2 is threadedly connected to the threaded rod 4. A T-slot 5 is opened in the threaded rod 4. Two symmetrically arranged limit blocks 6 are slidably engaged in the T-slot 5. An upper pressure block 7 is slidably engaged in the T-slot 5. The upper pressure block 7 is configured to cooperate with the limit blocks 6. A slot 8 for the limit blocks 6 to be inserted is opened on the bolt head 2. A limit ring 9 is fixedly installed at the bottom of the bolt head 2. A plurality of slots 10 are opened on the limit ring 3. A plurality of elastic paddles 11 are fixedly installed on the limit ring 9. The elastic paddles 11 are made of a metal material with a certain elasticity and are configured to cooperate with the slots 10.

[0014] In this embodiment, after the bolt head 2 and the threaded rod 4 are aligned, they can be threaded together. During the tightening process, the bolt head 2 will compress the upper pressure block 7, which will press out the limiting blocks 6 on both sides of the T-slot 5. Thus, after the bolt head 2 is tightened to the appropriate position, the limiting blocks 6 can be simultaneously locked in the T-slot 5 and the slot 8. When the bolt head 2 is screwed down to the last position, the elastic lever 11 on the limiting ring 9 will compress against the limiting ring 9 and generate a certain deflection. At the same time as the limiting block 6 is locked into the slot 8, the elastic lever 11... 1. It can be inserted into the slot 10 and reset due to its own elasticity. Under the limit of the elastic lever 11, the bolt head 2 can be limited and no longer rotate. When the limit ring 3 is subjected to force, the force can be transmitted to the bolt head 2 through the limit block 6 to bear the load together. This makes it less likely for the bolt head 2 to loosen after installation and improves the overall strength of the bolt. The bolt head 2 and the threaded rod 4 should be threaded with a large pitch, so that it can drop a long distance with one rotation. This prevents the elastic lever 11 from being squeezed and deflected for a long time and reducing its self-restoring force.

[0015] In some embodiments, to ensure that the limiting block 6 can immediately pop out after the slot 8 rotates to the appropriate position, a mating block 12 is slidably engaged within the T-slot 5. An elastic component 13, which can be a spring, is fixedly mounted on the limiting block 6, and its output end is connected to the mating block 12. Thus, when the limiting block 6 is pressed outwards, the mating block 12, in contact with the bolt head 2, jointly compresses the elastic component 13, causing it to contract. Therefore, after the slot 8 rotates to the appropriate position, the limiting block 6 can immediately pop out.

[0016] In some embodiments, to facilitate the pulling of the limiting block 6 by the upper pressure block 7, a groove 14 is provided on the limiting block 6, and a wedge 15 is fixedly installed on the upper pressure block 7, with the wedge 15 slidably engaged in the groove 14. Thus, by sliding the wedge 15 in the groove 14, the upper pressure block 7 can easily drive the limiting block 6 to retract.

[0017] In some embodiments, in order to reduce the friction between the upper pressure block 7 and the bolt head 2, and to facilitate the replacement of the damaged bolt head 2, a rotating block 16 is provided to be snapped onto the top of the threaded rod 4. The rotating block 16 is rotatably connected to the upper pressure block 7. The top view area of ​​the upper pressure block 7 is smaller than the top view area of ​​the rotating block 16. A chamfer is provided on the limiting ring 9, and the chamfer is located at the connection with the bolt head 2. The top of the threaded rod 4 has a circular groove located at the top of the T-slot 5. The rotating block 16 is engaged in the circular groove, so that when the bolt head 2 is installed, the rotating block 16 can rotate and press down to install the bolt head 2. When disassembling the bolt head 2, the chamfer on the limiting ring 9 can be squeezed with a tool to separate the limiting ring 9 from the bolt head 2. After breaking the top of the damaged bolt head 2, the upper pressure block 7 can be pulled out by the rotating block 16, so that the two limiting blocks 6 can retract and the bolt head 2 can be unscrewed and removed. Finally, the limiting ring 9 can be removed and a new bolt head 2 can be installed. After replacement, the threads on the threaded rod 4 may wear, but this will not prevent the normal use of the bolt head 2.

[0018] In some embodiments, to prevent the elastic lever 11 from being excessively bent and its elasticity reduced, a guide slope 17 is provided on the limiting ring 3. This allows the guide slope 17 to reduce the bending angle of the elastic lever 11 when it contacts the limiting ring 3.

[0019] In some embodiments, to further prevent the elastic lever 11 from bending excessively, a chamfer is provided at the bottom of the elastic lever 11.

[0020] The fixed connection and rotating installation in the above embodiments can all be achieved by welding, screw fasteners and other forms in the prior art, and the rotating installation can be achieved by bearings, circular rotating blocks and circular grooves. All of the above components are standard parts, and those that are not standard parts can also be specially customized, so the inventor will not elaborate further.

[0021] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0022] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

[0023] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0024] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0025] 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 mechanical connection or an electrical connection; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

Claims

1. A high-precision torque-shear bolt, comprising a bolt (1) and a bolt head (2), characterized in that, The bolt (1) is fitted with a limiting ring (3) at the top, and a threaded rod (4) is fitted on the limiting ring (3). The bolt head (2) is threadedly connected to the threaded rod (4). The threaded rod (4) is provided with a T-slot (5). Two symmetrically arranged limiting blocks (6) are slidably engaged in the T-slot (5). An upper pressure block (7) is slidably engaged in the T-slot (5). The upper pressure block (7) is matched with the limiting block (6). The bolt head (2) is provided with a slot (8) for the limiting block (6) to be inserted. The bolt head (2) is fitted with a limiting ring (9) at the bottom. The limiting ring (3) is provided with several slots (10). Several elastic paddles (11) are installed on the limiting ring (9). The elastic paddles (11) are matched with the slots (10).

2. The high-precision torque-shear bolt according to claim 1, characterized in that, The T-slot (5) is also slidably engaged with a mating block (12), and an elastic component (13) is installed on the limiting block (6). The output end of the elastic component (13) is connected to the mating block (12).

3. The high-precision torque-shear bolt according to claim 1, characterized in that, The limiting block (6) is provided with a sloping groove (14), and the upper pressing block (7) is equipped with a sloping block (15), which is slidably engaged in the sloping groove (14).

4. The high-precision torque-shear bolt according to claim 1, characterized in that, The top of the threaded rod (4) is fitted with a rotating block (16), which is rotatably connected to the upper pressure block (7). The top view area of ​​the upper pressure block (7) is smaller than that of the rotating block (16), and the limiting ring (9) is chamfered.

5. The high-precision torque-shear bolt according to claim 1, characterized in that, The limiting ring (3) is provided with a guide slope (17).

6. The high-precision torque-shear bolt according to claim 1, characterized in that, The bottom of the elastic lever (11) is chamfered.

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