Bolt longitudinal vibration test device for scraper assembly

Abstract

The invention relates to the field of mining scraper conveying equipment, in particular to a bolt longitudinal vibration test device for a scraper assembly. The device comprises a limiting groove, a scraper chain, a supporting frame and a hydraulic servo testing machine. The scraper chain is placed in the limiting groove, the limiting groove can be connected with the hydraulic servo testing machine through the supporting frame, the actual working condition is simulated through the set vibration frequency and amplitude, and a longitudinal vibration test is carried out. According to the invention, a new solution is provided for the longitudinal vibration test of the bolt for the scraper assembly, so that the purpose of checking the anti-loosening performance of the bolt for the scraper assembly is achieved.

Description

Technical Field

[0001] The present invention relates to the field of mining scraper conveyor equipment, and specifically relates to a longitudinal vibration test device for bolts of a scraper assembly. Background Art

[0002] As an important component of the scraper conveyor equipment, the reliability of the scraper chain directly affects the operation of the entire equipment. Therefore, before the equipment goes down the well, it is very necessary to detect the anti-loosening performance of the bolts for the scraper assembly. According to the actual operation of the scraper conveyor, the vibration of the bolts for the scraper assembly is divided into transverse vibration and longitudinal vibration, and the vibration in both directions will cause the bolts to loosen. At present, there are special devices for the transverse vibration of bolts in China, but there is no device for the longitudinal vibration test of bolts, resulting in the inability to test the longitudinal anti-loosening performance of bolts. The present invention will provide a longitudinal vibration test device for bolts of a scraper assembly that is convenient for disassembly and assembly and has strong applicability, better simulating the actual use of the bolts for the scraper assembly and solving the problem of the longitudinal vibration test of the bolts of the scraper assembly. Summary of the Invention

[0003] The purpose of the present invention is to provide a longitudinal vibration test device for bolts of a scraper assembly with a simple structure, convenient for disassembly and assembly, and strong applicability, to solve the problem of the longitudinal vibration test of the bolts of the scraper assembly.

[0004] The present invention discloses a longitudinal vibration test device for bolts of a scraper assembly, including a limit groove 1, a scraper chain 2, a support frame 13, and a hydraulic servo testing machine 14.

[0005] Further, for the test device, the limit groove 1 includes a bottom plate 9, limit groove sides 11, limit plates 12, and bolt b 16. Two limit groove sides 11 are respectively placed on both sides of the bottom plate 9 and welded to the bottom plate 9 as a whole. The front and rear ends of the bottom plate are connected to six limit plates 12 through bolt b 16 as a whole to prevent the scraper assembly from falling during the vibration test.

[0006] Further, for the test device, the scraper chain 2 includes a scraper assembly composed of bolt a 3, nut a 4, cross beam 8, and scraper 10 combined with a chain 15, and is placed in the limit groove 1. The limit groove side 11 fits the shape of the end of the scraper 10, playing a role in limiting left and right.

[0007] Further, for the test device, the support frame 13 includes a support assembly composed of support columns 5, support plates 6, and rib plates 7, which is connected to the bottom plate 9 with circumferentially evenly distributed counterbores through bolt c 17 and nut b 18. Bolt c 17 cannot protrude above the upper surface of the bottom plate 9 so as not to affect the test.

[0008] Further, for the test device, the support column 5 is connected to the hydraulic rod of the hydraulic servo testing machine 14.

[0009] A longitudinal vibration test device for bolts of a scraper assembly according to the present invention has a simple structure, is convenient for disassembly and assembly, and has strong applicability. The longitudinal vibration frequency and amplitude can be adjusted through a hydraulic servo testing machine to simulate the operation environment of the underground scraper chain, providing a practical solution for the longitudinal vibration test of bolts of the scraper assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described below with reference to the drawings and specific embodiments: Figure 1 is the front view after assembly of the present invention; Figure 2 is the top view after assembly of the present invention; Figure 3 is the front view of the support frame of the present invention; Figure 4 is the top view of the support frame of the present invention; Figure 5 is the front view of the limiting groove of the present invention; Figure 6 is the top view of the limiting groove of the present invention; In the figure: limiting groove 1, scraper 2, bolt a 3, nut a 4, support column 5, support plate 6, rib plate 7, cross beam 8, bottom plate 9, scraper 10, limiting groove side 11, limiting plate 12, support frame 13, hydraulic servo testing machine 14, chain 15, bolt b 16, bolt c 17, nut b 18. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0011] The following is a detailed description of the specific embodiments of the present invention with reference to the drawings: As Figure 1 , 2 , 3, 4, 5 and 6 show, a longitudinal vibration test device for bolts of a scraper assembly according to the present invention includes a limiting groove 1, a scraper chain 2, a support frame 13 and a hydraulic servo testing machine 14.

[0012] The limiting groove sides 11 are placed on both sides of the bottom plate 9 and welded to the bottom plate 9 as a whole. The front and rear ends of the bottom plate are connected to the limiting plates 12 through bolts b 16 as a whole. The limiting groove sides 11 are in conformity with the shapes of the ends of the scraper 10, playing a role of left and right limitation. At the same time, the actual use situation of the scraper can be simulated.

[0013] The scraper assembly composed of the scraper 2, the bolt a 3, the nut a 4 and the cross beam 8 is combined with the chain 15 and placed on the bottom plate 9. The front and rear are limited by 6 limiting plates 12 to prevent the scraper assembly from falling during the vibration test. The holes on the limiting plates 12 and the bottom plate 9 are all internally threaded for convenient installation. The chain 15 cannot hang down at both ends of the bottom plate 9 so as not to affect the test.

[0014] The support column 5, the support plate 6, and the rib plate 7 are welded into a support assembly 13. The support plate 6 is circumferentially and uniformly provided with threaded holes, and is connected to the bottom plate 9 with 10 countersunk holes circumferentially and uniformly distributed by bolts c17 and nuts b18. The bolts c17 are recessed into the countersunk holes of the bottom plate 9 and shall not protrude above the upper surface of the bottom plate 9 to avoid affecting the test. Eight rib plates 7 are evenly distributed and welded under the support plate 6 to reinforce the test device and ensure the load-bearing capacity of the device.

[0015] The support column 5 is connected to the hydraulic rod of the hydraulic servo testing machine 14. The hydraulic servo testing machine 14 sets the amplitude and frequency according to the test requirements and provides power.

[0016] The detailed description of the technical solution of the present invention with the aid of the preferred embodiments is illustrative rather than formally limiting. Those skilled in the art can modify the technical solutions recorded in the embodiments or perform equivalent replacements for some of the technical features on the basis of reading the specification of the present invention. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A bolt longitudinal vibration test device for a scraper assembly, comprising a limit groove (1), a scraper chain (2), a support frame (13) and a hydraulic servo test machine (14); characterized in that: The limiting groove (1) is connected to the support frame (13) via bolts c (17) and nuts b (18), and the support frame (13) is connected to the hydraulic servo testing machine (14) via a support column (5).

2. A bolt longitudinal vibration test device for a scraper assembly according to claim 1, characterized in that: The limiting groove (1) comprises a bottom plate (9), a limiting groove side (11), a limiting plate (12), and a bolt b (16); the limiting groove side (11) matches the shape of the end of the scraper (10), and the two limiting groove sides (11) are respectively arranged on both sides of the bottom plate (9) and welded to the bottom plate (9) as a whole, and the front and rear ends of the bottom plate are connected to the limiting plate (12) as a whole by bolts b (16).

3. A bolt longitudinal vibration test device for a scraper assembly according to claim 1, characterized in that The scraper chain (2) comprises a scraper assembly consisting of bolts a (3), nuts a (4), a crossbeam (8) and a scraper (10), and a chain (15) which is placed in a limiting groove (1).

4. A bolt longitudinal vibration test device for a scraper assembly according to claim 1, characterized in that The support frame (13) comprises a support assembly consisting of a support column (5), a support plate (6), and a rib plate (7), which is connected to a bottom plate (9) having countersunk holes evenly distributed around a circumference via bolts c (17) and nuts b (18), and the support column (5) is connected to a hydraulic rod of a hydraulic servo testing machine (14).

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