CN210034111U

CN210034111U - Metal fastener for nuclear power

Info

Publication number: CN210034111U
Application number: CN201920570498.3U
Authority: CN
Inventors: 董健; 杨刚
Original assignee: JIANGSU HAIWEI GROUP CO Ltd
Current assignee: JIANGSU HAIWEI GROUP CO Ltd
Priority date: 2019-04-25
Filing date: 2019-04-25
Publication date: 2020-02-07
Anticipated expiration: 2029-04-25

Abstract

The utility model discloses a metal fastener for nuclear power belongs to fastener technical field, including outer screw rod, outer screw rod's top is provided with the hexagonal nut, and outer screw rod's inside is provided with interior screw rod, outer screw rod's front surface is provided with logical groove, and outer screw rod's inner wall is provided with the spout, interior screw rod runs through the inside of hexagonal nut and is connected with the upper nut. The utility model discloses a lower cross keyway that sets up, the lower nut, the internal screw rod, outer screw rod, the upper nut, go up the cross keyway, upper nut and hexagonal nut, when needing to fasten nuclear power generating equipment, use the cross screwdriver to rotate cross keyway down, lower cross keyway drives in the lower nut inserts the external screw rod with the internal screw rod rotation, when the top of internal screw rod is higher than the hexagonal nut, use the cross screwdriver to rotate last cross keyway, it carries out the chucking with internal screw rod and hexagonal nut to go up the cross keyway and drive the upper nut, fastener insecure problem has effectively been solved.

Description

Metal fastener for nuclear power

Technical Field

The utility model relates to a fastener technical field specifically is a metal fastener for nuclear power.

Background

The fastener is a mechanical part which is used for fastening connection and has extremely wide application; the fastener is widely used in the industries including energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, molds, hydraulic pressure and the like, and various fasteners can be seen on various machines, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemical industry, instruments, supplies and the like, and are the most widely applied mechanical basic parts.

In nuclear power equipment's connection, need use a large amount of fasteners, present fastener generally uses screw rod and nut to carry out fixed connection, but the smooth phenomenon of silk of screw rod appears easily in this kind of mode, make the fastener appear the phenomenon that drops easily, present fastener causes the fastener to become flexible because of dismantlement many times easily, it is not hard up to lead to the connection between the nuclear power equipment to appear, influence its security, because the fastener uses the back for a long time, its surface rusts wearing and tearing easily, the life who leads to the fastener is low, and the inconvenient dismantlement of fastener after rustting, the cracked condition appears easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the nuclear power metal fastener is provided for solving the problems that the fastener is not firm in connection and is loosened due to repeated disassembly, and the service life of the fastener is short due to the fact that the surface of the fastener is easy to rust and wear.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a metal fastener for nuclear power, includes outer screw rod, the top of outer screw rod is provided with the hexagonal nut, and the inside of outer screw rod is provided with interior screw rod, the front surface of outer screw rod is provided with logical groove, and the inner wall of outer screw rod is provided with the spout, interior screw rod runs through the inside of hexagonal nut and is connected with the upper nut, the top of upper nut is provided with the cross keyway, the bottom of interior screw rod is connected with the lower nut, the bottom of lower nut is provided with down the cross keyway, the inside of spout is provided with the spring, one side of spring is connected with the baffle, the inboard of baffle is provided with the slide bar.

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

Preferably, the upper cross-shaped key groove is fixedly connected with the upper nut through welding, and the lower cross-shaped key groove is fixedly connected with the lower nut through welding.

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

Preferably, the baffle plates are symmetrically arranged along the central axis of the sliding rod, and the baffle plates are detachably connected with the sliding rod through bolts.

Preferably, one side of the sliding rod is clamped with the outer wall of the inner screw, and the spring is fixedly connected with the inner wall of the sliding groove through welding.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a lower cross keyway, lower nut, internal screw, outer screw, upper nut, upper cross keyway, upper nut and hexagonal nut that set up, when needing to fasten nuclear power equipment, use the cross screwdriver to rotate lower cross keyway, lower cross keyway drives lower nut and inserts the internal screw rotation into outer screw, when the top of internal screw is higher than hexagonal nut, use the cross screwdriver to rotate upper cross keyway, upper cross keyway drives upper nut and carries out the chucking with internal screw and hexagonal nut, effectively solved the insecure problem of fastener connection, through the internal screw who sets up, slide bar, spout and spring, when the internal screw is rotatory, the slide bar receives the extrusion, contracts to the spout in, when the internal screw stops rotating, the slide bar receives the effort of spring and outwards pops out, die the internal screw card, effectively solved many times of dismantlements and caused the fastener problem not hard up, with spring, baffle and slide bar setting in the inside of spout, both played the effect of fastening, avoided it to expose outside for a long time and the rusty condition appears simultaneously, can all dismantle internal screw rod through last cross keyway and lower cross keyway, and drive the hexagonal nut through the spanner and rotate, can dismantle internal screw rod and outer screw rod, avoid the cracked condition to take place, thereby effectively solved the fastener surface easily rusty wearing and tearing and make the problem that the life of fastener is low.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is an enlarged view of the position a of the present invention.

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

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a nuclear power metal fastener includes an outer screw rod 1, a hexagonal nut 2 is disposed on a top end of the outer screw rod 1, an inner screw rod 7 is disposed inside the outer screw rod 1, a through groove 5 is disposed on a front surface of the outer screw rod 1, a sliding groove 11 is disposed on an inner wall of the outer screw rod 1, the inner screw rod 7 penetrates through the hexagonal nut 2 and is connected with an upper nut 3, an upper cross key groove 4 is disposed on a top end of the upper nut 3, a lower nut 6 is connected to a bottom end of the inner screw rod 7, a lower cross key groove 8 is disposed on a bottom end of the lower nut 6, a spring 9 is disposed inside the sliding groove 11, a baffle 10 is connected to one side of the spring 9, and.

Please refer to fig. 1 and 2, the inner wall of the outer screw 1 is provided with a thread corresponding to the inner screw 7, so that the outer screw 1 is rotatably connected to the inner screw 7 through the thread, the outer screw 1 is fixedly connected to the hexagonal nut 2 through welding, so that the outer screw 1 is fixedly mounted on the hexagonal nut 2, the upper cross-shaped key slot 4 is fixedly connected to the upper nut 3 through welding, so that the upper cross-shaped key slot 4 is fixedly mounted on the upper nut 3, the lower cross-shaped key slot 8 is fixedly connected to the lower nut 6 through welding, so that the lower cross-shaped key slot 8 is fixedly mounted on the lower nut 6, the upper nut 3 is internally provided with a thread corresponding to the inner screw 7, so that the upper nut 3 is rotatably connected to the inner screw 7 through the thread, and the lower nut 6 is internally provided with a thread corresponding to the inner screw 7, so that the lower nut 6 is rotatably connected to the inner.

Please refer to fig. 3, the baffles 10 are symmetrically arranged along the central axis of the sliding rod 12, so that the baffles can drive the sliding rod 12 to move, the baffles 10 are detachably connected with the sliding rod 12 through bolts, so that the sliding rod 12 can be conveniently installed, one side of the sliding rod 12 is clamped with the outer wall of the inner screw 7, so that the sliding rod 12 is conveniently clamped with the inner screw 7, the phenomenon of loosening caused by special conditions is avoided, the spring 9 is fixedly connected with the inner wall of the sliding groove 11 through welding, so that the spring 9 is fixedly connected with the sliding groove 11, and the spring 9 is prevented from moving.

The working principle is as follows: firstly, when nuclear power equipment needs to be fastened, a cross screwdriver is used for rotating a lower cross key groove 8, the lower cross key groove 8 drives a lower nut 6 to insert an inner screw 7 into the outer screw 1 in a rotating manner, a through groove 5 can enable the outer screw 1 to deflect to one opposite side, so that a fastening effect is achieved, when the top end of the inner screw 7 is higher than a hexagonal nut 2, a cross screwdriver is used for rotating an upper cross key groove 4, the upper cross key groove 4 drives an upper nut 3 to clamp the inner screw 7 and the hexagonal nut 2, then, when the inner screw 7 rotates, a sliding rod 12 is extruded and contracted into a sliding groove 11, when the inner screw 7 stops rotating, the sliding rod 12 is outwards ejected under the action force of a spring 9, the inner screw 7 is clamped, the connection between the nuclear power equipment is prevented from loosening, and finally, the spring 9, a baffle plate 10 and the sliding rod 12 are arranged inside the sliding groove 11, both played the effect of fastening, avoided its long-term exposure outside and the rusty condition appears simultaneously, can all dismantle internal screw 7 through last cross keyway 4 and lower cross keyway 8, and drive hexagonal nut 2 through the spanner and rotate, can dismantle internal screw 7 and outer screw rod 1, avoid the cracked condition to take place.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

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.