CN210034111U - Metal fastener for nuclear power - Google Patents

Abstract

The utility model discloses a metal fastener for nuclear power, which belongs to the technical field of fasteners. The front surface of the hexagonal nut is provided with a through groove, and the inner wall of the outer screw rod is provided with a chute, the inner screw rod penetrates the interior of the hexagonal nut and is connected with the upper nut. The utility model adopts 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. When the nuclear power equipment needs to be tightened, a cross screwdriver is used to rotate the lower cross keyway. , the lower cross keyway drives the lower nut to rotate the inner screw 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, and the upper cross keyway drives the upper nut to connect the inner screw with the hexagonal nut. Clamping effectively solves the problem of weak connection of fasteners.

Description

Metal Fasteners for Nuclear Power

technical field

The utility model 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 that are used for fastening and connection and are widely used; fasteners are widely used in industries, including energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, mold, hydraulic and other industries. All kinds of fasteners can be seen on all kinds of machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemicals, instruments and supplies, etc., which are the most widely used mechanical foundation parts. .

In the connection of nuclear power equipment, a large number of fasteners need to be used. At present, fasteners generally use screws and nuts for fixed connection, but this method is prone to the phenomenon of screw sliding, which makes the fasteners easy to fall off. phenomenon, the existing fasteners are easily loosened due to repeated disassembly, resulting in loose connections between nuclear power equipment and affecting their safety. Because the fasteners are used for a long time, their surfaces are prone to rust. Wear, resulting in a low service life of the fasteners, and the rusted fasteners are inconvenient to disassemble, and are prone to breakage.

Utility model content

The purpose of this utility model is: in order to solve the problem that the fasteners are not firmly connected, the fasteners are loosened due to repeated disassembly, and the surface of the fasteners is easy to rust and wear, so that the service life of the fasteners is low, to provide a nuclear power plant. Use metal fasteners.

In order to achieve the above purpose, the present invention provides the following technical solutions: a metal fastener for nuclear power, comprising an outer screw rod, the top end of the outer screw rod is provided with a hexagonal nut, and an inner screw rod is arranged inside the outer screw rod, and the outer screw rod is provided with an inner screw rod. The front surface of the screw is provided with a through groove, and the inner wall of the outer screw is provided with a chute, the inner screw penetrates the interior 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 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 inner side of the baffle is provided with a Slider.

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

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

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

Preferably, the baffle plate is symmetrically arranged along the central axis of the sliding rod, and the baffle plate and the sliding rod are detachably connected by bolts.

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

Compared with the prior art, the beneficial effects of the present utility model are: the present utility model needs to reduce the need for nuclear power generation by setting 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. When the equipment is tightened, use a Phillips screwdriver to rotate the lower cross keyway, and the lower cross keyway drives the lower nut to rotate the inner screw into the outer screw. Rotation, the upper cross keyway drives the upper nut to clamp the inner screw rod and the hexagonal nut, which effectively solves the problem that the fastener is not firmly connected. , the sliding rod is squeezed and shrinks into the chute. When the inner screw stops rotating, the sliding rod is ejected 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 role of tightening, but also avoids rusting due to long-term exposure. The upper cross keyway and the lower cross keyway can be adjusted The inner screw is disassembled, and the hexagonal nut is driven by the wrench to rotate, the inner screw and the outer screw can be disassembled to avoid the occurrence of breakage, which effectively solves the problem that the surface of the fastener is easy to rust and wear, which reduces the service life of the fastener. The problem.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the sectional view of the utility model;

Figure 3 is an enlarged view of the utility model A.

In the figure: 1. External screw; 2. Hexagonal nut; 3. Upper nut; 4. Upper cross keyway; 5. Through slot; 6. Lower nut; 7. Internal screw; 8. Lower cross keyway; 9. Spring; 10 , baffle; 11, chute; 12, slide bar.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

1-3, a metal fastener for nuclear power includes an outer screw 1, a hexagonal nut 2 is arranged at the top of the outer screw 1, and an inner screw 7 is arranged inside the outer screw 1, and the front surface of the outer screw 1 A through slot 5 is provided, and the inner wall of the outer screw 1 is provided with a chute 11. The inner screw 7 penetrates the interior 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 key slot 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 key slot 8, a spring 9 is arranged inside the chute 11, one side of the spring 9 is connected with a baffle plate 10, and the inner side of the baffle plate 10 is provided with a sliding plate. Rod 12.

1 and 2, the inner wall of the outer screw 1 is provided with threads corresponding to the inner screw 7, so that the outer screw 1 and the inner screw 7 are connected by thread rotation, and the outer screw 1 and the hexagonal 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 by welding Fixed connection, it is convenient to fix the lower cross key slot 8 on the lower nut 6, the inside of the upper nut 3 is provided with a thread 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, and the inner part of the lower nut 6 A thread corresponding to the inner screw rod 7 is provided, so that the lower nut 6 and the inner screw rod 7 are connected in rotation through the screw thread.

Please refer to FIG. 3 , the baffle 10 is symmetrically arranged along the central axis of the sliding rod 12 , which is convenient for the baffle to drive the sliding rod 12 to move, and the baffle 10 and the sliding rod 12 are detachably connected by bolts, which is convenient for the installation of the sliding rod 12 and the sliding rod One side of the 12 is engaged with the outer wall of the inner screw 7, which is convenient for the sliding rod 12 to be engaged with the inner screw 7, so as to avoid the phenomenon of loosening due to the occurrence of special circumstances. The spring 9 and the inner wall of the chute 11 are fixedly connected by welding. It is convenient for the spring 9 to be fixedly connected with the chute 11 to prevent the spring 9 from moving.

Working principle: First, when the nuclear power equipment needs to be tightened, use a Phillips screwdriver to rotate the lower cross keyway 8, and the lower cross keyway 8 drives the lower nut 6 to rotate the inner screw 7 into the outer screw 1. The screw 1 is offset to the opposite side to achieve the effect of tightening. When the top end 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. The screw 7 and the hexagonal nut 2 are clamped, and then, when the inner screw 7 rotates, the sliding rod 12 is squeezed and shrinks into the chute 11. When the inner screw 7 stops rotating, the sliding rod 12 is subjected to the action of the spring 9 force to pop out, and the inner screw 7 is stuck to prevent the connection between the nuclear power equipment from loosening. The inner screw 7 can be disassembled through the upper cross key slot 4 and the lower cross key slot 8, and the hexagonal nut 2 can be driven by a wrench to rotate, and the inner screw 7 and the inner screw 7 can be disassembled. The outer screw 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, and that the present invention may be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments are to be considered in all respects as exemplary and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is therefore intended that the All changes within the meaning and range of the required equivalents are embraced within the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

Claims (6)

1. Metal fastener for nuclear power, including outer screw rod (1), its characterized in that: the utility model discloses a nut, including outer screw (1), inner screw (7), preceding nut (1), spout (6), outer screw (1), the top of outer screw (1) is provided with hexagonal nut (2), and the inside of outer screw (1) is provided with interior screw (7), the front surface of outer screw (1) is provided with logical groove (5), and the inner wall of outer screw (1) is provided with spout (11), interior screw (7) run through the inside of hexagonal nut (2) and are connected with upper nut (3), the top of upper nut (3) is provided with cross keyway (4), the bottom of interior screw (7) is connected with lower nut (6), the bottom of lower nut (6) is provided with down cross keyway (8), the inside of spout (11) is provided with spring (9), one side of spring (9) is connected with baffle (10), the inboard.

2. The metal fastener for nuclear power as claimed in claim 1, wherein: the inner wall of the outer screw rod (1) is provided with threads corresponding to the inner screw rod (7), and the outer screw rod (1) is fixedly connected with the hexagonal nut (2) through welding.

3. The metal fastener for nuclear power as claimed in claim 1, wherein: the upper cross-shaped key groove (4) is fixedly connected with the upper nut (3) through welding, and the lower cross-shaped key groove (8) is fixedly connected with the lower nut (6) through welding.

4. The metal fastener for nuclear power as claimed in claim 1, wherein: the inner part of the upper nut (3) is provided with threads corresponding to the inner screw rod (7), and the inner part of the lower nut (6) is provided with threads corresponding to the inner screw rod (7).

5. The metal fastener for nuclear power as claimed in claim 1, wherein: the baffle (10) is symmetrically arranged along the central axis of the sliding rod (12), and the baffle (10) is detachably connected with the sliding rod (12) through bolts.

6. The metal fastener for nuclear power as claimed in claim 1, wherein: one side of the sliding rod (12) is clamped with the outer wall of the inner screw (7), and the spring (9) is fixedly connected with the inner wall of the sliding groove (11) through welding.

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