CN110081061A - Nuclear power metal fastenings - Google Patents

Abstract

The invention discloses a metal fastener for nuclear power, which belongs to the technical field of fasteners, and comprises an outer screw, the top of the outer screw is provided with a hexagonal nut, and the inside of the outer screw is provided with an inner screw, and the outer screw is provided with a hexagonal nut. The front surface is provided with a through groove, and the inner wall of the outer screw rod is provided with a sliding groove, and the inner screw rod passes through the inside of the hexagonal nut and is connected with the upper nut. In the present invention, the lower cross keyway, the lower nut, the inner screw, the outer screw, the upper nut, the upper cross keyway, the upper nut and the hexagonal nut are provided. When the nuclear power equipment needs to be fastened, the lower cross keyway is rotated with a cross screwdriver. The lower cross keyway drives the lower nut to rotate the inner screw and insert it into the outer screw. When the top of the inner screw is higher than the hexagonal nut, use a cross screwdriver to rotate the upper cross keyway. The upper cross keyway drives the upper nut to engage the inner screw with the hexagonal nut. Tight, effectively solve the problem of loose connection of fasteners.

Description

Metal fasteners for nuclear power

technical field

The invention relates to the technical field of fasteners, in particular to a metal fastener for nuclear power.

Background technique

Fasteners are a type of mechanical parts used for fastening connections and are widely used; fasteners are used in a wide range of industries, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, molds, hydraulics, etc. A variety of fasteners can be seen on various machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemicals, instruments and supplies, and are the most widely used mechanical basic parts. .

In the connection of nuclear power equipment, a large number of fasteners need to be used. The current fasteners generally use screws and nuts for fixed connection, but this method is prone to the phenomenon of screw slippage, which makes the fasteners easy to fall off. Phenomenon, the existing fasteners are easy to loose due to repeated disassembly, resulting in loose connections between nuclear power equipment, affecting its safety, because the surface of the fasteners is prone to rust after long-term use Wear and tear causes the service life of fasteners to be low, and rusted fasteners are inconvenient to disassemble and prone to breakage.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a kind of metal fasteners.

In order to achieve the above object, the present invention provides the following technical solutions: a metal fastener for nuclear power, including an outer screw, the top of the outer screw is provided with a hexagonal nut, and the inside of the outer screw is provided with an inner screw, the outer screw The front surface of the front surface is provided with a through groove, and the inner wall of the outer screw rod is provided with a chute, the inner screw rod runs through the inside of the hexagonal nut and is connected with an upper nut, the top of the upper nut is provided with an upper cross keyway, and the inner screw rod The bottom end is connected with a lower nut, the bottom end of the lower nut is provided with a lower cross keyway, the inside of the chute is provided with a spring, one side of the spring is connected with a baffle, and the inside of the baffle is provided with a sliding pole.

Preferably, the inner wall of the outer screw is provided with threads corresponding to the inner screw, and the outer screw and the hex nut are fixedly connected by welding.

Preferably, the upper cross keyway is fixedly connected to the upper nut by welding, and the lower cross keyway is fixedly connected to the lower nut by welding.

Preferably, the inside of the upper nut is provided with threads corresponding to the inner screw, and the inside of the lower nut is provided with threads corresponding to the inner screw.

Preferably, the baffle is arranged symmetrically along the central axis of the slide bar, and the baffle and the slide bar are detachably connected by bolts.

Preferably, one side of the sliding rod is engaged with the outer wall of the inner screw, and the spring is fixedly connected with the inner wall of the chute by welding.

Compared with the prior art, the beneficial effect of the present invention is: the present invention needs to carry out nuclear power equipment through the set lower cross keyway, lower nut, inner screw, outer screw, upper nut, upper cross keyway, upper nut and hexagonal nut. When tightening, use a Phillips screwdriver to turn the lower cross keyway, the lower cross keyway drives the lower nut to rotate the inner screw and insert it into the outer screw, when the top of the inner screw is higher than the hex nut, use a Phillips screwdriver to turn the upper cross keyway, The upper cross keyway drives the upper nut to clamp the inner screw and the hexagonal nut, which effectively solves the problem of loose connection of fasteners. Through the set inner screw, sliding rod, chute and spring, while the inner screw rotates, the sliding The rod is squeezed and shrinks into the chute. When the inner screw stops rotating, the sliding rod is pushed outward by the force of the spring, and the inner screw is stuck, which effectively solves the problem of loose fasteners caused by multiple disassembly. , the spring, baffle and sliding rod are arranged inside the chute, which not only plays a fastening role, but also avoids the rust caused by long-term exposure, and the inner screw can be aligned through the upper cross keyway and the lower cross keyway Disassembly, and the hexagonal nut is driven by a wrench to rotate, the inner screw and the outer screw can be disassembled, avoiding breakage, and effectively solving the problem that the surface of the fastener is easy to rust and wear, which makes the service life of the fastener low. .

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a sectional view of the present invention;

Fig. 3 is an enlarged view of place A of the present invention.

In the figure: 1, external screw; 2, hexagonal nut; 3, upper nut; 4, upper cross keyway; 5, through groove; 6, lower nut; 7, inner screw; 8, lower cross keyway; 9, spring; 10 , baffle plate; 11, chute; 12, slide bar.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to Figure 1-3, a metal fastener for nuclear power, including an outer screw 1, the top of the outer screw 1 is provided with a hexagonal nut 2, and the inside of the outer screw 1 is provided with an inner screw 7, and the front surface of the outer screw 1 A through groove 5 is provided, and the inner wall of the outer screw 1 is provided with a chute 11, the inner screw 7 runs through the inside of the hexagonal nut 2 and is connected with the upper nut 3, the top of the upper nut 3 is provided with an upper cross keyway 4, and the inner screw 7 The bottom end is connected with a lower nut 6, the bottom end of the lower nut 6 is provided with a lower cross keyway 8, the inside of the chute 11 is provided with a spring 9, one side of the spring 9 is connected with a baffle plate 10, and the inside of the baffle plate 10 is provided with a slide pole 12.

Please refer to Figures 1 and 2 emphatically, the inner wall of the outer screw 1 is provided with threads corresponding to the inner screw 7, which is convenient for the outer screw 1 and the inner screw 7 to be connected through thread rotation, and the outer screw 1 and the hex nut 2 are fixedly connected by welding, It is convenient to fix the outer screw 1 on the hexagonal nut 2, the upper cross keyway 4 and the upper nut 3 are fixedly connected by welding, and it is convenient to fix the upper cross keyway 4 on the upper nut 3, and the lower cross keyway 8 and the lower nut 6 are welded Fixedly connected, it is convenient to fix the lower cross keyway 8 on the lower nut 6. The inside of the upper nut 3 is provided with threads corresponding to the inner screw 7, which is convenient for the upper nut 3 and the inner screw 7 to be connected by thread rotation. The inner of the lower nut 6 Threads corresponding to the inner screw 7 are provided to facilitate the connection between the lower nut 6 and the inner screw 7 through thread rotation.

Please refer to Fig. 3 emphatically, the baffle plate 10 is arranged symmetrically along the central axis of the slide bar 12, which is convenient for the baffle plate to drive the slide bar 12 to move, and the baffle plate 10 and the slide bar 12 are detachably connected by bolts, which is convenient for installing the slide bar 12. One side of 12 is engaged with the outer wall of the inner screw 7, which facilitates the engagement of the slide bar 12 with the inner screw 7, and avoids the phenomenon of loosening due to the occurrence of special circumstances. The inner wall of the spring 9 and the chute 11 is fixedly connected by welding, It is convenient for the spring 9 to be fixedly connected with the chute 11 and prevent the spring 9 from moving.

Working principle: First, when the nuclear power equipment needs to be fastened, use a Phillips screwdriver to rotate the lower cross keyway 8, the lower cross keyway 8 drives the lower nut 6 to rotate the inner screw 7 into the outer screw 1, and the through groove 5 can make the outer screw 1 The screw 1 is shifted to the opposite side to achieve the effect of fastening. When the top of the inner screw 7 is higher than the hexagonal nut 2, use a Phillips screwdriver to rotate the upper cross keyway 4, and the upper cross keyway 4 drives the upper nut 3 to push the inner The screw rod 7 is clamped with the hexagonal nut 2, and then, while the inner screw rod 7 rotates, the sliding rod 12 is squeezed and shrinks into the chute 11, and when the inner screw rod 7 stops rotating, the sliding rod 12 is affected by the spring 9 Force and pop out, the inner screw 7 is stuck, to avoid loose connection between nuclear power equipment, finally, the spring 9, baffle 10 and slide bar 12 are arranged in the inside of the chute 11, which not only plays a fastening role function, and at the same time avoid its long-term exposure to rust, the inner screw 7 can be disassembled through the upper cross keyway 4 and the lower cross keyway 8, and the hexagonal nut 2 is driven by a wrench to rotate, and the inner screw 7 and The outer screw rod 1 is disassembled to avoid breakage.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (6)

1. Metal fasteners for nuclear power, including an external screw (1), characterized in that: the top of the external screw (1) is provided with a hexagonal nut (2), and the inside of the external screw (1) is provided with an internal screw ( 7), the front surface of the outer screw (1) is provided with a through groove (5), and the inner wall of the outer screw (1) is provided with a chute (11), and the inner screw (7) runs through the hex nut (2) The inside of the inner screw rod (7) is connected with an upper nut (3), the top of the upper nut (3) is provided with an upper cross keyway (4), the bottom end of the inner screw (7) is connected with a lower nut (6), the lower The bottom end of the nut (6) is provided with a lower cross keyway (8), the inside of the chute (11) is provided with a spring (9), and one side of the spring (9) is connected with a baffle (10). A slide bar (12) is provided on the inner side of the baffle (10). 2. The metal fastener for nuclear power according to claim 1, characterized in that: the inner wall of the outer screw (1) is provided with threads corresponding to the inner screw (7), and the outer screw (1) and the hexagonal The nut (2) is fixedly connected by welding. 3. The metal fastener for nuclear power according to claim 1, characterized in that: the upper cross keyway (4) and the upper nut (3) are fixedly connected by welding, and the lower cross keyway (8) and the lower nut (6) Fixed connection by welding. 4. The metal fastener for nuclear power according to claim 1, characterized in that: the inside of the upper nut (3) is provided with threads corresponding to the inner screw (7), and the inner screw of the lower nut (6) The inside is provided with threads corresponding to the internal screw rod (7). 5. The metal fastener for nuclear power according to claim 1, characterized in that: the baffle (10) is arranged symmetrically along the central axis of the slide bar (12), and the baffle (10) and the slide bar (12) ) are detachably connected by bolts. 6. The metal fastener for nuclear power according to claim 1, characterized in that: one side of the sliding rod (12) is engaged with the outer wall of the inner screw (7), and the spring (9) is engaged with the chute (11) The inner wall is fixedly connected by welding.