Device for detecting load borne by carrier roller

Abstract

The device for detecting the load borne by the carrier roller comprises a blocking table detection pin shaft (1), a base (2), the carrier roller (3) and a chain (4), and is technically characterized in that the detection pin shaft (1) comprises a polished rod (12), a middle shaft (14) and an end shaft (16) which are equal in diameter, a first reducing shaft (13) is arranged between the polished rod (12) and the middle shaft (14), a second reducing shaft (15) is arranged between the middle shaft (14) and the end shaft (16), and the end shaft (16) is provided with an external thread (161). The device has the advantages of simple structure, convenience in use and the like.

Description

Technical Field

[0001] The invention relates to open-pit mining equipment, in particular to a device for detecting the load borne by a roller, which is mainly suitable for detecting the load borne by a single roller when a belt conveyor is in operation. Background Art

[0002] In the field of open-pit mining, the resistance between belt rollers has attracted much attention, especially the running resistance, which has a significant impact on the energy efficiency of the transportation system. In long-distance and heavy-load conveying systems, running resistance is one of the factors that need to be considered. Running resistance mainly consists of belt rolling resistance, belt sliding resistance on rollers, and roller rotation resistance. To calculate the roller rotation resistance and belt sliding resistance, it is necessary to understand the radial resultant force, while the detailed calculation of belt rolling resistance must be based on the load distribution of the force along the axial direction of the roller. One of the methods to determine the time-varying operating conditions of the belt conveyor is to measure the load acting on the roller group. Therefore, real-time detection of the load on the roller is crucial for studying the running resistance of the belt conveyor. The load on the roller is not only the main input parameter for the design calculation and reliability analysis of the roller group, but also an important basis for evaluating the power consumption of the belt conveyor. Summary of the invention

[0003] The purpose of the present invention is to provide a device for detecting the load on the roller, which fundamentally solves the above problems and has the advantages of simple structure and convenient use. To achieve the above object, the present invention provides the following technical solution: the device for detecting the load on the roller comprises three bases hinged in sequence by hinges, and rollers rotatably limited on the bases, and the outer sides of the bases at both ends are floatingly fixed by chains, and the technical points are: Brackets are vertically fixed at both ends of the base, and the detection pin shaft passes through the bracket and is fixed on the bracket and is locked and fixed by a nut. The middle part of the detection pin shaft passes through the roller shaft of the roller and is limited; The detection pin shaft includes an equal-diameter light rod, a middle shaft, and an end shaft. The first reduced-diameter shaft is arranged between the light rod and the middle shaft, the second reduced-diameter shaft is arranged between the middle shaft and the end shaft, and the end shaft is provided with an external thread; a stopper is provided on the outer side of the light rod and is limited on the outer side of the bracket.

[0004] Beneficial effects of the invention: In terms of the overall technical solution, the structure of the invention can be easily and quickly assembled at any point on the route of a given type of belt conveyor and can output real-time load. Under operating conditions, the strain measurement method using the detection pin installed on the hinge of the roller group to measure the shear force has been proven to be useful and effective. The modular design can achieve a series connection without an upper limit on the scale of components under the same conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1 It is a schematic structural diagram of the detection pin shaft of the present invention.

[0006] Figure 2 It is a structural schematic diagram of the present invention in use state.

[0007] Figure 2a for Figure 2 Schematic diagram of the cross-sectional structure.

[0008] Figure 3 This is a reference diagram of the use status of the present invention in a roller group.

[0009] Figure 3a for Figure 3 Schematic diagram of the local enlarged structure. DETAILED DESCRIPTION

[0010] The following combination Figures 1 to 3 The specific contents of the present invention are described in detail through specific embodiments. The device for detecting the load on the roller comprises three bases 2 hinged in sequence by hinges 23, and rollers 3 rotatably limited on the bases 2. The outer sides of the bases 2 at both ends are floatingly fixed by chains 4. Brackets 21 are vertically fixed at both ends of the bases 2. The detection pin shaft 1 penetrates the bracket 21 and is fixed on the bracket 21, and is locked and fixed by nuts 22. The middle part of the detection pin shaft 1 penetrates the roller shaft 31 of the roller 3 and is limited.

[0011] The detection pin shaft 1 includes an equal-diameter light rod 12, a middle shaft 14, and an end shaft 16. The first reduced-diameter shaft 13 is arranged between the light rod 12 and the middle shaft 14, the second reduced-diameter shaft 15 is arranged between the middle shaft 14 and the end shaft 16, and the end shaft 16 is provided with an external thread 161; a stopper 11 is provided on the outer side of the light rod 12 and is limited on the outer side of the bracket 21.

[0012] The cross sections of the end shaft 16 and the polished rod 12 are circular, the cross sections of the second reduced diameter shaft 15, the middle shaft 14 and the first reduced diameter shaft 13 are square, and the middle shaft 14 cooperates with the roller shaft 31. Two pairs of parallel surfaces are machined on both sides of the middle part of the detection pin shaft, and strain gauges are installed on these surfaces.

[0013] The detection pin shaft 1, the base 2 and the roller shaft 31 form a hinge point.

[0014] The end shaft 16 and the smooth rod 12 of the test pin 1 are supported by the support 2. This structure allows the detection of shear forces acting parallel to each other on both sides of the test pin 1. The axial force Fa acting on one roller support 2 is determined by the shear force pair T3 and T4, and the radial force Fr is determined by the shear force pair T1 and T2.

[0015] The rollers are mounted in three hinged frames, each supporting one roller. The test pins only bear the external loads (radial and axial forces) acting on the rollers. Description of reference numerals: 1 detection pin, 11 stopper, 12 polished rod, 13 first reduced diameter shaft, 14 middle shaft, 15 second reduced diameter shaft, 16 end shaft, 161 external thread; 2 base, 21 bracket, 22 nut, 23 hinge; 3 rollers, 31 roller shafts; 4 Chains.

Claims

1. A device for detecting the load on a roller, comprising three bases (2) hingedly connected in sequence by hinges (23), rollers (3) rotatably limited on the bases (2), and the outer sides of the bases (2) at both ends are floatingly fixed by chains (4), characterized in that: Brackets (21) are respectively fixed vertically at both ends of the base (2); the detection pin shaft (1) passes through the bracket (21) and is fixed on the bracket (21) and is locked and fixed by a nut (22); the middle part of the detection pin shaft (1) passes through the roller shaft (31) of the roller (3) and is limited; The detection pin shaft (1) comprises an equal-diameter light rod (12), a middle shaft (14), and an end shaft (16); a first reduced-diameter shaft (13) is arranged between the light rod (12) and the middle shaft (14); a second reduced-diameter shaft (15) is arranged between the middle shaft (14) and the end shaft (16); and an external thread (161) is arranged on the end shaft (16); and a stopper (11) is arranged on the outer side of the light rod (12) and is limited on the outer side of a bracket (21).

Images