Locking nut for petrochemical industry

Abstract

The locking nut comprises a nut body, a gasket, jackscrews, a sleeve piece and a positioning piece, the gasket is fixedly welded to the lower surface of the nut body, threaded holes are formed in the front surface and the rear surface of the nut body, the jackscrews are embedded in the threaded holes, and the positioning piece is fixedly welded to the lower surface of the nut body. And a sleeve piece is movably sleeved on the surface of the jackscrew and is positioned at the front end. According to the locking nut for the petrochemical industry, after the locking nut is installed, the jackscrew is rotated through a tool till the rear end of the jackscrew abuts against the bolt, due to the fact that the locating piece is pressed into the containing groove by the gasket in the installation process of the jackscrew, after the jackscrew abuts against the bolt, the locating piece descends under the pushing effect of the spring, and the locating piece is pressed into the containing groove by the gasket. The lower end of the inserting block is embedded in the inserting opening, so that the external member can be positioned, the jackscrew and the external member are installed together, the installed jackscrew cannot move front and back, and therefore the abutting effect of the jackscrew on the bolt is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fasteners, in particular to a locking nut for petrochemical industry. Background Art

[0002] In the current mechanical manufacturing field, nut fixing is widely used. However, with the development of the mechanical manufacturing industry, the energy of various mechanical equipment is getting higher and higher, and the movement speed and frequency are also constantly improving. Ordinary nut fixing is becoming more and more difficult to maintain reliable fixation of mechanical equipment under dynamic loads. Therefore, the locking nut formed after further improvement of the nut has a stronger locking force, thereby being able to provide more reliable fixation under dynamic loads. During the installation of oil pipelines, locking nuts and studs are often used to fix the pipelines to prevent the pipelines from falling off.

[0003] However, there are some shortcomings in the current locking nuts. When the locking nuts are used, in order to prevent the bolt from loosening after being inserted into the locking nut, a jackscrew is used to tighten the bolt in the nut. However, the jackscrew is installed in a threaded manner, so the jackscrew will also rotate and loosen, which will make the tightening effect of the jackscrew on the bolt worse. Utility Model Content

[0004] The main purpose of the utility model is to provide a locking nut for petrochemical industry, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A locking nut for petrochemical industry comprises a nut body, a gasket, a top screw, a sleeve and a positioning piece. The gasket is fixedly welded to the lower surface of the nut body, the front and rear surfaces of the nut body are provided with threaded holes, the inside of the threaded holes are embedded with a top screw, the surface of the top screw is movably sleeved with a sleeve at the front end, and the inside of the sleeve is movably embedded with a positioning piece at the lower end.

[0007] As a preferred technical solution of the present application, a sleeve hole is provided inside the upper end of the kit, an annular limit groove is provided on the inner surface of the sleeve hole, a storage groove is provided inside the kit, rod grooves are provided on both side surfaces of the kit, a guide rod is fixedly installed inside the rod groove, and a spring is provided on the surface of the guide rod.

[0008] As a preferred technical solution of the present application, the positioning member includes an insert block and a lifting block. The lifting blocks are fixedly installed on both side surfaces of the upper end of the insert block, and a guide hole is opened on the upper surface of the lifting block near the rear.

[0009] As a preferred technical solution of the present application, the upper end of the insert block is embedded in the receiving groove, the receiving groove is connected to the rod groove, and the guide rod passes through the guide hole.

[0010] As a preferred technical solution of the present application, a limiting ring is provided on the surface of the top screw and near the front fixed sleeve, the rear end of the top screw passes through the sleeve hole and is embedded in the threaded hole, and the limiting ring is embedded in the annular limiting groove.

[0011] As a preferred technical solution of the present application, sockets are provided on the upper surface of the gasket and located in front of and behind the nut body, and the lower end of the insert is embedded in the sockets.

[0012] As a preferred technical solution of the present application, the upper end of the spring is fixed to the inner upper surface of the rod groove, the lower end of the spring is fixed to the lifting block, and the rear end of the top screw extends through the threaded hole to the interior of the nut body.

[0013] Compared with the existing technology, this utility model proposes a self-cleaning solar street light with the following features:

[0014] Beneficial effects:

[0015] The present invention provides a method of cooperating with each other by arranging a gasket, a top screw, a kit and a positioning piece. After the locking nut is installed, the top screw is rotated by a tool so that the rear end of the top screw is continuously inserted into the threaded hole until the rear end of the top screw is tightly against the bolt. Since the positioning piece is pressed into the receiving groove by the gasket during the installation of the top screw, when the top screw is tightly against the bolt, the positioning piece descends under the pushing action of the spring, so that the lower end of the insert block is embedded in the socket, so that the kit can be positioned. Since the top screw is installed together with the kit, the top screw cannot move forward and backward after installation. In this way, the top screw can always press the bolt tightly against the nut, thereby ensuring the tightening effect of the top screw on the bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall structure diagram of a locking nut for petrochemical industry in the utility model;

[0017] Figure 2 This is a schematic diagram of partial disassembly of a locking nut for petrochemical industry according to the present utility model;

[0018] Figure 3 This is a top screw structure diagram of a locking nut for petrochemical industry in the utility model;

[0019] Figure 4 This is a partial cross-sectional view of a locking nut kit for petrochemical industry according to the utility model;

[0020] Figure 5 This is a structural diagram of a positioning piece of a locking nut for petrochemical industry according to the utility model.

[0021] In the figure: 1. Nut body; 2. Washer; 201. Socket; 3. Top screw; 301. Limiting ring; 4. Kit; 401. Hole; 402. Annular limiting groove; 403. Storage groove; 404. Rod groove; 405. Guide rod; 406. Spring; 5. Positioning piece; 501. Insert block; 502. Pull block; 503. Guide hole; 6. Threaded hole. DETAILED DESCRIPTION

[0022] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

[0023] like Figure 1-5 The illustrated embodiment shows a locking nut for petrochemical industry, comprising a nut body 1, a washer 2, a top screw 3, a sleeve 4 and a positioning piece 5. The washer 2 is fixedly welded to the lower surface of the nut body 1, and threaded holes 6 are provided on the front and rear surfaces of the nut body 1. The top screw 3 is embedded in the threaded holes 6. The sleeve 4 is movably sleeved on the surface of the top screw 3 and located at the front end. The positioning piece 5 is movably embedded in the interior of the sleeve 4 and located at the lower end.

[0024] A sleeve hole 401 is provided inside the upper end of the kit 4, and an annular limit groove 402 is provided on the inner surface of the sleeve hole 401. A storage groove 403 is provided inside the kit 4, and rod grooves 404 are provided on both sides of the kit 4. A guide rod 405 is fixedly installed inside the rod groove 404, and a spring 406 is provided on the surface of the guide rod 405. The spring 406 has a downward thrust on the lifting block 502; the positioning member 5 includes an insert block 501 and a lifting block 502. The lifting blocks 502 are fixedly installed on both sides of the upper end of the insert block 501, and a guide hole 503 is provided on the upper surface of the lifting block 502 and near the rear; the upper end of the insert block 501 is embedded in the storage groove 403, and the storage groove 403 and the rod groove 404 are fixedly installed. The groove 404 is connected, and the guide rod 405 passes through the guide hole 503; a limiting ring 301 is provided on the surface of the top screw 3 and near the front end fixed sleeve, and the rear end of the top screw 3 passes through the sleeve hole 401 and is embedded in the threaded hole 6, and the limiting ring 301 is embedded in the annular limiting groove 402; the upper surface of the gasket 2 and the front and rear of the nut body 1 are provided with a socket 201, and the lower end of the plug block 501 is embedded in the socket 201. The cooperation between the plug block 501 and the socket 201 can prevent the top screw 3 from moving; the upper end of the spring 406 is fixed to the inner upper surface of the rod groove 404, and the lower end of the spring 406 is fixed to the lifting block 502, and the rear end of the top screw 3 passes through the threaded hole 6 and extends to the interior of the nut body 1.

[0025] It should be noted that the present invention is a locking nut for petrochemical industry. During use, after the locking nut is installed, the top screw 3 is rotated by a tool so that the rear end of the top screw 3 is continuously inserted into the threaded hole 6 until the rear end of the top screw 3 is tightened against the bolt. Since the positioning member 5 is pressed into the receiving groove 403 by the gasket 2 during the installation of the top screw 3, when the top screw 3 is tightened against the bolt, the positioning member 5 descends under the pushing action of the spring 406, so that the lower end of the insert 501 is embedded in the socket 201, so that the kit 4 can be positioned. Since the top screw 3 is installed together with the kit 4, the top screw 3 cannot move forward and backward after installation, so that the top screw 3 can always press the bolt against the nut, thereby ensuring the tightening effect of the top screw 3 on the bolt.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A locking nut for petrochemical industry, characterized by: The invention comprises a nut body (1), a gasket (2), a top screw (3), a sleeve (4) and a positioning piece (5); the gasket (2) is fixedly welded to the lower surface of the nut body (1); threaded holes (6) are provided on the front and rear surfaces of the nut body (1); a top screw (3) is embedded in the inside of the threaded hole (6); a sleeve (4) is movably sleeved on the surface of the top screw (3) and located at the front end; and a positioning piece (5) is movably embedded in the inside of the sleeve (4) and located at the lower end.

2. A locking nut for petrochemical industry according to claim 1, characterized in that: A sleeve hole (401) is provided inside the upper end of the sleeve (4), an annular limiting groove (402) is provided on the inner surface of the sleeve hole (401), a receiving groove (403) is provided inside the sleeve (4), rod grooves (404) are provided on both sides of the sleeve (4), a guide rod (405) is fixedly installed inside the rod groove (404), and a spring (406) is sleeved on the surface of the guide rod (405).

3. The locking nut for petrochemical industry according to claim 2, characterized in that: The positioning member (5) includes an insert block (501) and a lifting block (502), and the lifting blocks (502) are fixedly installed on both sides of the upper end of the insert block (501), and a guide hole (503) is opened on the upper surface of the lifting block (502) near the rear.

4. The locking nut for petrochemical industry according to claim 3, characterized in that: The upper end of the insert block (501) is embedded in the receiving groove (403), the receiving groove (403) is communicated with the rod groove (404), and the guide rod (405) passes through the guide hole (503).

5. The locking nut for petrochemical industry according to claim 4, characterized in that: A limiting ring (301) is provided on the surface of the top screw (3) and close to the front fixed sleeve. The rear end of the top screw (3) passes through the sleeve hole (401) and is embedded in the threaded hole (6). The limiting ring (301) is embedded in the annular limiting groove (402).

6. The locking nut for petrochemical industry according to claim 5, characterized in that: Sockets (201) are provided on the upper surface of the gasket (2) and located in front and rear of the nut body (1), and the lower end of the insert (501) is embedded in the sockets (201).

7. The locking nut for petrochemical industry according to claim 6, characterized in that: The upper end of the spring (406) is fixed to the inner upper surface of the rod groove (404), the lower end of the spring (406) is fixed to the lifting block (502), and the rear end of the top screw (3) passes through the threaded hole (6) and extends to the inside of the nut body (1).

Images