A mining monorail tie rod axial force measuring device

Abstract

This utility model discloses a mining monorail crane axial force measuring device, comprising: left and right semi-annular fixed seats, which are fixedly disposed on the outer circumferential surface of the monorail crane and arranged symmetrically at left and right intervals; a grating strain sensor, which is fixedly disposed on the left and right semi-annular fixed seats and is used to sense the deformation of the monorail crane and generate wavelength change signals; and a data acquisition unit, which is connected to the grating strain sensor and is used to receive the wavelength change signals of the grating strain sensor and convert the wavelength change signals into axial force data and upload them to a back-end server. This utility model uses a grating strain sensor to sense the deformation of the monorail crane and generate wavelength change signals, and then uses a data acquisition unit to process the wavelength change signals to generate axial force data and upload it to a back-end server, thereby realizing online real-time monitoring of the axial force changes of the monorail crane.

Description

Technical Field

[0001] This utility model relates to the field of monorail tie rod technology, and in particular to a device for measuring the axial force of a mining monorail tie rod. Background Technology

[0002] Mining monorail cranes are mainly used to transport various large objects in mines, often weighing several tons or even tens of tons, solving the problem of transporting large objects that cannot be done manually. However, during the transport process, the tension on the connecting rods between different parts of the monorail varies. Especially when the monorail is carrying goods uphill or downhill, the uneven tension on the drive-end rod can cause it to flip, resulting in a "rod twisting" phenomenon that can easily damage the track, which is extremely dangerous.

[0003] Therefore, real-time monitoring of the axial force of monorail tie rods is particularly important. However, there is currently no device capable of monitoring the axial force data of monorail tie rods in real time.

[0004] Therefore, through beneficial exploration and research, the applicant has found a solution to the above problems, and the technical solution to be introduced below is the result of this research. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a mining monorail tie rod axial force measuring device that can detect the axial force of the monorail tie rod in real time, in order to address the shortcomings of the existing technology.

[0006] The technical problem to be solved by this utility model can be achieved by the following technical solution: A device for measuring the axial force of a mine monorail crane tie rod includes: Left and right semi-annular fixing seats are fixedly installed on the outer circumferential surface of the monorail tie rod and are arranged symmetrically with left and right intervals. A grating strain sensor, fixedly mounted on the left and right semi-annular mounting bases, is used to sense the deformation of the monorail tie rod and generate a wavelength change signal; and The data acquisition unit is connected to the grating strain sensor and is used to receive the wavelength change signal of the grating strain sensor and convert the wavelength change signal into axial force data and upload it to the backend server.

[0007] In a preferred embodiment of this utility model, the left and right semi-annular fixing seats are fixed to the outer circumferential surface of the monorail tie rod by adhesive bonding.

[0008] In a preferred embodiment of the present invention, left and right fixing grooves are provided on the left and right semi-annular fixing seats, and the left and right ends of the grating strain sensor are fixedly embedded in the left and right fixing grooves of the left and right semi-annular fixing seats.

[0009] In a preferred embodiment of the present invention, the grating strain sensor has a signal transmission line, and the end of the signal transmission line is provided with a quick connector.

[0010] In a preferred embodiment of this utility model, the grating strain sensor is a grating strain sensor of model FBG-ZH.

[0011] In a preferred embodiment of this utility model, the data collector is a YJC127 model.

[0012] Due to the adoption of the above technical solution, the beneficial effects of this utility model are as follows: This utility model uses a grating strain sensor to sense the wavelength change signal generated by the deformation of the monorail tie rod, and then uses a data acquisition device to process the wavelength change signal to generate axial force data and upload it to the back-end server, so as to realize online real-time monitoring of the axial force change of the monorail tie rod, effectively perform fault diagnosis and prediction, and can reasonably distribute the front and rear driving forces to avoid locomotive stopping or even rolling backward due to overload, squeezing or insufficient driving force, thereby reducing the occurrence of accidents and reducing operating costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is the front view of this utility model.

[0015] Figure 2 This is a top view of the present invention.

[0016] Figure 3 yes Figure 1 Enlarged diagram of point A. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following description, in conjunction with specific illustrations, further elaborates on this utility model.

[0018] Referring to the attached figure, a mining monorail crane tie rod axial force measuring device is shown, including left and right semi-annular fixed seats 100a and 100b, a grating strain sensor 200, and a data acquisition device (not shown in the figure).

[0019] Left and right semi-annular fixing seats 100a and 100b are fixedly disposed on the outer peripheral surface of the monorail tie rod 10 and are arranged symmetrically on the left and right sides. In this embodiment, the left and right semi-annular fixing seats 100a and 100b are fixed to the outer peripheral surface of the monorail tie rod 10 by adhesive bonding, thus avoiding damage to the outer surface of the monorail tie rod 10 and affecting the structural stability of the monorail tie rod 10.

[0020] A grating strain sensor 200 is fixedly mounted on the left and right semi-annular mounting bases 100a and 100b, used to sense the deformation of the monorail tie rod 10 and generate a wavelength change signal. Left and right fixing slots 110a and 110b are provided on the left and right semi-annular mounting bases 100a and 100b, and the left and right ends 210a and 210b of the grating strain sensor 200 are fixedly embedded in the left and right fixing slots 110a and 110b of the left and right semi-annular mounting bases 100a and 100b. The grating strain sensor 200 has a signal transmission line 220, and a quick connector 230 is provided at the end of the signal transmission line 220, improving the efficiency of assembly and disassembly with the data acquisition device. In this embodiment, the grating strain sensor 200 is an FBG-ZH model grating strain sensor.

[0021] The data acquisition unit is connected to the grating strain sensor 200 to receive the wavelength change signal from the grating strain sensor 200 and convert the wavelength change signal into axial force data, which is then uploaded to the backend server. In this embodiment, the data acquisition unit is a YJC127 model.

[0022] The working principle of the mining monorail tie rod axial force measuring device of this utility model is as follows: When the monorail tie rod 10 is stretched, the distance between the left and right semi-annular fixing seats 100a and 100b, which are fixed to the monorail tie rod 10, is lengthened. This stretches the grating strain sensor 200, causing the optical fiber inside the grating strain sensor 200 to deform, resulting in a change in the grating period and a shift in the Bragg wavelength of the reflected light. By measuring this wavelength shift, the corresponding strain value can be calculated, which is the wavelength change signal. Subsequently, the grating strain sensor 200 transmits the generated wavelength change signal to the data acquisition unit, which converts the wavelength change signal into axial force data and uploads it to the backend server.

[0023] The calculation process for axial force data is as follows: ε = [(λ-λ0 )]*Aε T = (λT - λT0)BT + T0 Strain after temperature compensation = ε - (T - T0) * Aε The force value after temperature compensation = [ε - (T - T0)Aε] * K + B Wherein, λ0 represents the initial wavelength in nm; λ represents the actual center wavelength in nm; λT represents the measured wavelength of the temperature-compensated sensor in nm; λT0 represents the initial wavelength of the temperature-compensated sensor in nm; BT represents the temperature coefficient of the temperature-compensated sensor in °C / pm; Bε represents the temperature coefficient of the strain sensor in °C / pm; Aε represents the coefficient of the strain sensor in mm / pm; and K represents the pull-out coefficient in kN / pm.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A mine single-track suspension boom rod axial force measuring device, characterized in that, include: Left and right semi-annular fixing seats are fixedly installed on the outer circumferential surface of the monorail tie rod and are arranged symmetrically with left and right intervals. A grating strain sensor is fixedly mounted on the left and right semi-annular fixed bases to sense the deformation of the monorail tie rod and generate a wavelength change signal. as well as The data acquisition unit is connected to the grating strain sensor and is used to receive the wavelength change signal of the grating strain sensor and convert the wavelength change signal into axial force data and upload it to the backend server.

2. The mine track jumbo rod axial force measuring device as claimed in claim 1, characterized in that, The left and right semi-annular fixing seats are fixed to the outer circumference of the monorail tie rod by adhesive.

3. The mine track hoist rod shaft force measuring device of claim 1, wherein, Left and right fixing grooves are provided on the left and right semi-annular fixing bases, and the left and right ends of the grating strain sensor are fixedly embedded in the left and right fixing grooves of the left and right semi-annular fixing bases.

4. The mine track hoist rod shaft force measuring device of claim 1, wherein, The grating strain sensor has a signal transmission line, and the end of the signal transmission line is provided with a quick connector.

5. The mine track hoist rod shaft force measuring device of claim 1, wherein, The grating strain sensor used is a grating strain sensor with model number FBG-ZH.

6. The axial force measuring device for a mine monorail crane tie rod as described in claim 1, characterized in that, The data collector used is a YJC127 model.

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