Moment-adjustable locking bolt assembly

Abstract

The present invention discloses a torque-adjustable locking bolt assembly, which includes an outer nail body (1), an inner nail body (2), and a tip (4). It is characterized in that: the inner nail body (2) is installed in the installation hole (7) on the outer nail body (1), a torque ring (3) is sleeved on the inner nail body (2), the torque ring (3) is placed in the installation cavity (6) arranged at the front part of the outer nail body (1), the rod part of the inner nail body (2) is connected with the inner ring of the torque ring (3) through stripes (9), the tip (4) is installed at the tail of the inner nail body (2), the outer conical surface of the tip (4) fits on the inner conical surface of the locking pin (5), the locking pin (5) is movably installed in the pin hole (8) arranged on the outer nail body (1), and threads are arranged on the outer side surface of the outer nail body (1). The structure of the present invention is simple, highly efficient and stable, has strong versatility, and is convenient to operate, and is suitable for the popularization and use of bolt torque-adjustable locking.

Description

Technical Field

[0001] The present invention belongs to the technical field of locking bolts, and more specifically, relates to a torque-adjustable locking bolt assembly. Background Art

[0002] Bolts are the most common fasteners and are widely used in various fields. Currently, the following problems exist in the use of bolts: First, the assembly and installation torque needs to be carried out with a torque wrench, and the bolt itself cannot control its installation torque; second, ordinary bolts cannot be locked, and they will still loosen after being installed according to the specified torque, resulting in their ultimate failure. During the production process, the existing use requirements for adjustable and lockable installation torque cannot be met. Summary of the Invention

[0003] The purpose of the present invention is to provide a torque-adjustable locking bolt assembly with a simple structure, high efficiency, stability, strong versatility, and convenient operation, overcoming the above-mentioned disadvantages.

[0004] The purpose of the present invention and the solution to its main technical problems are achieved by adopting the following technical solutions:

[0005] The torque-adjustable locking bolt assembly of the present invention includes an outer nail body, an inner nail body, and a tip. Among them: the inner nail body is installed in the installation hole on the outer nail body, a torque ring is sleeved on the inner nail body, the torque ring is placed in the installation cavity provided at the front of the outer nail body, the rod part of the inner nail body is connected to the inner ring of the torque ring through stripes, the tail of the inner nail body is equipped with a tip, the outer conical surface of the tip fits on the inner conical surface of the locking pin, the locking pin is movably installed in the pin hole provided on the outer nail body, and a thread is provided on the outer side surface of the outer nail body.

[0006] In the above-mentioned torque-adjustable locking bolt assembly, there are two locking pins, which together form a conical cavity with variable size, and the top of the tip is placed in the conical cavity.

[0007] In the above-mentioned torque-adjustable locking bolt assembly, the inner nail body and the outer nail body are connected by threads.

[0008] In the above-mentioned torque-adjustable locking bolt assembly, the inner ring of the torque ring can be oval, square, hexagonal, etc.

[0009] In the above-mentioned torque-adjustable locking bolt assembly, the torque ring is installed in the installation cavity of the outer nail body through the square blocks provided on the outside.

[0010] The present invention has obvious advantages and beneficial effects compared with the prior art. As can be seen from the above technical solutions, in the torque-adjustable locking bolt assembly of the present invention, a torque ring is sleeved on the inner nail body. The rod part of the inner nail body is connected to the inner ring of the torque ring through stripes, which is convenient for increasing the friction force to drive the torque ring to rotate by the inner nail body. At the same time, when the inner nail body reaches the maximum torque of the torque ring, the inner nail body and the torque ring will slip; a tip is installed at the tail of the inner nail body, and the outer conical surface of the tip fits on the inner conical surface of the locking pin. The locking pin is movably installed in the pin hole provided on the outer nail body. There are two locking pins, which together form a conical cavity with variable size. The top of the tip is placed in the conical cavity. When the inner nail body pushes the tip to move, the tip drives the locking pin to move to both sides along the pin hole, achieving the locking effect of the assembly with the installation hole or nut; the inner ring of the torque ring can be oval, square, hexagonal, etc., which is convenient to meet different requirements; the torque ring is installed in the installation cavity of the outer nail body through the square blocks provided on the outside, which is stable and reliable. In short, the present invention has a simple structure, high efficiency, stability, strong versatility and convenient operation, and is suitable for the popularization and use of bolt torque-adjustable locking. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present invention;

[0012] Figure 2 is Figure 1 the left view of

[0013] Figure 3 is Figure 1 a sectional view taken along line AA;

[0014] Figure 4 is a schematic structural diagram of the outer nail body;

[0015] Figure 5 is Figure 4 the left view of

[0016] Figure 6 is a schematic structural diagram of the inner nail body;

[0017] Figure 7 is a schematic structural diagram of the locking pin;

[0018] Figure 8 is Figure 7 the left view of

[0019] Figure 9 is a usage state diagram of the present invention when the installation torque is reached;

[0020] Figure 10 is a usage state diagram of the present invention when the installation is completed.

[0021] Reference numerals in the drawings:

[0022] 1. Outer nail body; 2. Inner nail body; 3. Torque ring; 4. Tip; 5. Locking pin; 6. Installation cavity; 7. Installation hole; 8. Pin hole; 9. Stripe. Detailed implementation manners

[0023] The following combines the accompanying drawings and preferred embodiments to elaborate in detail on the specific implementation manners, structures, features, and functions of the torque-adjustable locking bolt assembly proposed according to the present invention.

[0024] See Figures 1 to 8 , the torque-adjustable locking bolt assembly of the present invention includes an outer nail body 1, an inner nail body 2, and a tip 4. Among them: the inner nail body 2 is installed in the installation hole 7 on the outer nail body 1, a torque ring 3 is sleeved on the inner nail body 2, the torque ring 3 is placed in the installation cavity 6 provided at the front of the outer nail body 1, the rod part of the inner nail body 2 is connected to the inner ring of the torque ring 3 through a stripe 9, the tail of the inner nail body 2 is equipped with a tip 4, the outer conical surface of the tip 4 fits on the inner conical surface of the locking pin 5, the locking pin 5 is movably installed in the pin hole 8 provided on the outer nail body 1, and a thread is provided on the outer side surface of the outer nail body 1. There are two locking pins 5, which together form a conical cavity with variable size, and the top of the tip 4 is placed in the conical cavity. The inner nail body 2 is threadedly connected to the outer nail body 1. The inner ring of the torque ring 3 can be oval, square, hexagonal, etc. The torque ring 3 is installed in the installation cavity 6 of the outer nail body 1 through a square block provided on the outside.

[0025] During use, see Figures 9 to 10 , first select a suitable torque ring 3 according to requirements, use a wrench or power tool to wrench the wrenching part at the head of the inner nail body 2 to drive the inner nail body 2 to rotate. The inner nail body 2 drives the torque ring 3 to rotate, and the torque ring 3 drives the outer nail body 1 to rotate so that the bolt assembly is screwed into the installation position or nut. When the installation reaches the torque limit of the bolt assembly, the inner nail body 2 reaches the maximum torque of the torque ring 3, and the inner nail body 2 and the torque ring 3 start to slip, and the inner nail body 2 cannot drive the torque ring 3 to continue rotating, and the outer nail body 1 reaches the installation torque. Continuing to rotate the inner nail body 2, the inner nail body 2 and the outer nail body 1 start to rotate relative to each other, and the inner nail body 2 is screwed into the outer nail body 1 along the thread. At this time, the inner nail body 2 squeezes the tip 4 to move forward, and the outer conical surface of the tip 4 squeezes the inner conical surface of the locking pin 5, causing the locking pin 5 to move to both sides, achieving the locking effect of the assembly with the installation hole or nut. Continuing to rotate the inner nail body 2 until the wrenching part at the head is damaged and the head height is reduced, the installation is completed. The structure of the present invention is simple, efficient, stable, highly versatile, and easy to operate, and is suitable for the popularization and use of bolt torque-adjustable locking.

[0026] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A torque-adjustable locking bolt assembly, comprising an outer nail body (1), an inner nail body (2), and a tip (4), characterized in that : The inner nail body (2) is installed in the installation hole (7) of the outer nail body (1). A torque ring (3) is sleeved on the inner nail body (2). The torque ring (3) is placed in the installation cavity (6) provided at the front part of the outer nail body (1). The rod part of the inner nail body (2) is connected to the inner ring of the torque ring (3) through stripes (9). A tip (4) is installed at the tail of the inner nail body (2). The outer conical surface of the tip (4) fits on the inner conical surface of the locking pin (5). The locking pin (5) is movably installed in the pin hole (8) provided on the outer nail body (1). Threads are provided on the outer side surface of the outer nail body (1). There are two locking pins (5) which together form a conical cavity with variable size. The top of the tip (4) is placed in the conical cavity. The inner nail body (2) and the outer nail body (1) are connected by threads.

2. The torque-adjustable locking bolt assembly according to claim 1, wherein : The inner ring of the torque ring (3) is oval, square, or hexagonal.

3. The torque-adjustable locking bolt assembly according to claim 1, characterized in that : The torque ring (3) is installed in the installation cavity (6) of the outer nail body (1) through the cooperation of square blocks provided outside.

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