Lock bolt for scraper assembly

Abstract

The utility model relates to the field of mining scraper conveying equipment, in particular to a lock bolt for a scraper assembly. The device comprises a scraping plate, a cross beam, an anti-loosening bolt and a nut. The anti-loosening bolt adopts variable pitch diameter threads, and the fastening and anti-loosening effects are achieved through the change of the pitch diameter of the bolt. A new solution is provided for preventing the bolt for the scraper assembly from loosening, the pitch diameter of the external thread of the bolt is changed, the external thread of the bolt is in taper change from the top end of the bolt to the bottom end of the bolt, the contact area of the external thread of the bolt and the internal thread of the nut is increased, friction force is increased, and therefore the purpose of preventing the bolt from loosening is achieved.

Description

Technical Field

[0001] The utility model relates to the field of mining scraper conveying equipment, in particular to an anti-loosening bolt for a scraper assembly in the scraper conveying equipment. Background Art

[0002] The scraper assembly is an important component of the scraper conveying equipment used in mines. Its function is to fix the chain and keep the chain at a fixed distance. At the same time, the auxiliary scraper chain engages with the sprocket, thereby driving the coal on the plate of the conveying equipment to move. The operating conditions of the scraper conveying equipment are harsh. Long-term and violent vibrations can easily cause the bolts of the scraper assembly to loosen or even fall off, causing the equipment to get stuck or even seriously damaged. Therefore, it is necessary to regularly check, repair and replace the loose bolts in the scraper assembly to ensure the normal operation of the equipment. At present, most scraper assemblies use national standard bolts, which are prone to loosening during the use of the equipment. The present invention provides a safer, more reliable and easy-to-disassemble anti-loosening bolt to solve the problem of loose bolts in the scraper assembly. Summary of the Invention

[0003] The utility model aims to provide an anti-loosening bolt for a scraper assembly in a scraper conveying device, so as to solve the problem that the bolts for the scraper assembly are easy to loosen.

[0004] A anti-loosening bolt for a scraper assembly is characterized in that it includes a crossbeam 1, a scraper 2, an anti-loosening bolt 3 and a nut 4. The scraper 1 and the crossbeam 2 are connected together by the anti-loosening bolt 3. The anti-loosening bolt 3 adopts a variable diameter thread and can be adapted to ordinary national standard nuts.

[0005] Furthermore, the scraper assembly uses an anti-loosening bolt, and the anti-loosening bolt 3 adopts a variable mid-diameter thread, and the mid-diameter of the thread changes in a taper from the top end of the bolt to the bottom end of the bolt.

[0006] The beneficial effects of the utility model are: the scraper assembly is fastened by the nut and the anti-loosening bolt, the anti-loosening effect of the bolts used for the scraper assembly is improved, and the performance of the equipment is improved; at the same time, disassembly and assembly are convenient, and the labor intensity of workers is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0008] Figure 1 It is an assembly diagram of the utility model;

[0009] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0010] 1. Scraper, 2. Crossbeam, 3. Anti-loosening bolt, 4. Nut. DETAILED DESCRIPTION

[0011] exist Figure 1In the middle, scraper 1, beam 2 and Figure 2 The anti-loosening bolts 3 in the screw thread are connected together and tightened by nuts 4. The anti-loosening bolts 3 adopt variable diameter threads, and the major and minor diameters of the threads are within the requirements of the national standard. The thread diameter changes in a taper from the top of the bolt to the bottom of the bolt, which can be adapted to national standard nuts. During use, the bolt passes through the round hole, directly contacts the scraper 1 and the crossbeam 2, and is tightened by nuts 4. During use, the anti-loosening bolts only need to select the corresponding tightening torque according to the national standard bolt performance level. The anti-loosening principle of this anti-loosening bolt is to increase the diameter of the outer thread of the bolt, increase the contact area between the outer thread of the bolt and the inner thread of the nut, and increase the friction, thereby achieving the purpose of preventing the bolt from loosening. At the same time, since the anti-loosening bolts adopt variable diameter threads, the thread diameter has a certain taper as a whole, with a small top and a large bottom, making it easier to disassemble and assemble the nuts.

Claims

1. A screw bolt for a scraper assembly, characterized in that: The invention comprises a scraper (1), a crossbeam (2), an anti-loosening bolt (3) and a nut (4); the scraper (1) and the crossbeam (2) are connected together by the anti-loosening bolt (3); the anti-loosening bolt (3) adopts a variable diameter thread, and the anti-loosening bolt (3) is tightened by the nut (4).

2. The anti-loosening bolt for a scraper assembly according to claim 1, characterized in that The thread pitch diameter tapers from the top of the bolt to the bottom of the bolt.

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