A device for measuring the large height of a rod

Abstract

The application provides a device for measuring the large sag of a rod. The device comprises a telescopic reference rod, an auxiliary support, a fixing device and a range finder. The auxiliary support comprises a one-way telescopic rod, end turning rods and two connectors. The one-way telescopic rod can be freely telescoped in one direction. The two ends of the one-way telescopic rod are provided with end turning rods. One end of the end turning rod is connected with the one-way telescopic rod, and the other end is connected with one connector. The end turning rod is used for automatically adjusting the direction of the connector according to the deformation of the rod to be measured. One of the two connectors is sleeved on the telescopic reference rod, and the other connector is used for sleeving on the rod to be measured. The fixing device is fixed on one connector at the bottom end of the auxiliary support. The range finder is fixed on the fixing device. The application can be used for measuring the bending sag of the rod to be measured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of civil engineering measurement, in particular to a large deflection measurement device for a rod. BACKGROUND

[0002] In the truss structure of industrial plant steel roof truss, etc., after long-term use, various types of rod bending phenomenon will occur, especially the web rod is the most common. For this kind of compression rod with two-way bending defect, it is often necessary to determine its residual tensile carrying capacity problem, and the bending phenomenon usually determines the reduction of the component tensile carrying capacity through bending deflection and other influencing factors. Therefore, using a device capable of measuring the large deflection of the rod is the key to solving the residual tensile carrying capacity of the rod. However, the prior art does not provide a device capable of conveniently measuring the bending deflection of the rod. SUMMARY

[0003] Therefore, the present application provides a large deflection measurement device for a rod, so that the bending deflection of the rod to be measured can be measured.

[0004] The technical scheme of the present application is implemented as follows:

[0005] A large deflection measurement device for a rod, the device comprising: a telescopic reference rod, an auxiliary support, a fixing device and a range finder;

[0006] The auxiliary support comprises: a one-way telescopic rod, an end turning rod and two connecting pieces;

[0007] The one-way telescopic rod can be freely telescoped in one direction; both ends of the one-way telescopic rod are provided with an end turning rod;

[0008] One end of the end turning rod is connected with the one-way telescopic rod, and the other end is connected with one connecting piece; the end turning rod is used to automatically adjust the direction of the connecting piece according to the size of the deformation of the rod to be measured;

[0009] One of the two connecting pieces is sleeved on the telescopic reference rod, and the other connecting piece is used to be sleeved on the rod to be measured;

[0010] The fixing device is fixed to one connecting piece at the bottom end of the auxiliary support;

[0011] The range finder is fixed to the fixing device.

[0012] Further, the connecting piece comprises: a ring sleeve and an elastic bolt;

[0013] The ring sleeve is fixedly connected with the end turning rod; the ring sleeve is used to be sleeved on the telescopic reference rod or the rod to be measured;

[0014] The top and bottom of the annular sleeve are provided with elastic bolts; the elastic bolts are used to make the annular sleeve contact with the telescopic reference rod or the measured rod and slide along the telescopic reference rod or the measured rod.

[0015] Further, the fixing device comprises a base and a device fixing ring.

[0016] The base is fixed on the auxiliary support.

[0017] The device fixing ring is arranged on the top of the base and is used to fix the range finder.

[0018] Further, the end turning rod is cylindrical; one end of the end turning rod is sleeved on the self-resetting rod, and the other end is connected with the middle part of the connecting piece.

[0019] Further, the telescopic reference rod is provided with steel strands at two ends, and the steel strands are connected with two ends of the measured rod through magnetic supports.

[0020] Further, the telescopic reference rod is composed of multiple rod pieces which are nested with each other.

[0021] Further, the telescopic reference rod is provided with a scale.

[0022] Further, the single-direction elongation rod of the auxiliary support is provided with a scale at two ends.

[0023] As can be seen above, in the rod large deflection measurement device in the application, the telescopic reference rod can be installed at two ends of the measured rod, the two ends of the auxiliary support are connected with the telescopic reference rod and the measured rod respectively, and the range finder is installed on the auxiliary support, so that the auxiliary support can be moved to make the two ends of the auxiliary support slide on the telescopic reference rod and the measured rod respectively, and the corresponding data is measured by the range finder during the movement of the auxiliary support, and then the bending deflection of the measured rod can be obtained after the corresponding calculation according to the obtained data. Therefore, the bending deflection of the measured rod can be measured by using the above rod large deflection measurement device.

[0024] In addition, the rod large deflection measurement device in the application has simple structure, is convenient to maintain and carry, is easy to operate and install, has high measurement precision, and has simple method and intuitive reading, so that the related field investigation and measurement work can be supported to the maximum extent. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the rod large deflection measurement device in the embodiment of the application.

[0026] Figure 2 It is a schematic view of the telescopic reference rod in the embodiment of the application.

[0027] Figure 3 This is a three-dimensional schematic diagram of the auxiliary support in an embodiment of the present invention.

[0028] Figure 4 This is a schematic elevation view of the auxiliary support in an embodiment of the present invention.

[0029] Figure 5 This is a perspective view of the rangefinder fixing device in an embodiment of the present invention.

[0030] Figure 6 This is a schematic elevation view of the rangefinder fixing device in an embodiment of the present invention.

[0031] Figure 7 This is a three-dimensional schematic diagram of the magnetic support in an embodiment of the present invention. Detailed Implementation

[0032] To make the technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1-6 As shown, the rod large sag measuring device in this embodiment of the invention includes: a telescopic reference rod 11, an auxiliary support 12, a fixing device 13, and a rangefinder;

[0034] The auxiliary support 12 includes: a one-way extension rod 21, an end steering rod 22, and two connecting pieces 23;

[0035] The one-way extension rod 21 can extend and retract freely in one direction; both ends of the one-way extension rod 21 are provided with end steering rods 22;

[0036] One end of the end steering rod 22 is connected to the one-way extension rod 21, and the other end is connected to a connector 23; the end steering rod 22 is used to automatically adjust the direction of the connector 23 according to the magnitude of the deformation of the rod to be tested;

[0037] One of the two connectors is sleeved on the telescopic reference rod 21, and the other connector is sleeved on the rod to be tested 10.

[0038] The fixing device 13 is fixed to a connector 23 at the bottom end of the auxiliary support 12;

[0039] The rangefinder is fixed to the fixing device 13.

[0040] When the above rod large deflection measuring device is used to measure the deflection of the rod to be measured, the telescopic reference rod can be installed on both ends of the rod to be measured, then one connecting piece of the auxiliary support is sleeved on the telescopic reference rod, and the other connecting piece is used to be sleeved on the rod to be measured, and the distance measuring instrument is installed on the fixing device of the auxiliary support; finally, the auxiliary support is moved so that the two connecting pieces of the auxiliary support slide on the telescopic reference rod and the rod to be measured respectively, and in the process of moving the auxiliary support, the corresponding data (for example, the distance value from the distance measuring instrument to the rod to be measured and the like) are measured by the distance measuring instrument, and after the corresponding calculation according to the obtained data, the deflection of the rod to be measured can be obtained.

[0041] In addition, preferably, in one specific embodiment of the present application, the two ends of the one-way elongation rod of the auxiliary support can be provided with scales, so that the deflection measured by the distance measuring instrument can be checked, and the distance measuring instrument can also check the maximum deflection.

[0042] In addition, preferably, as shown in Figure 2 In one specific embodiment of the present application, the two ends of the telescopic reference rod are provided with steel strands, which can be connected with the two ends of the rod to be measured through the magnetic support 15, so that the installation and disassembly are convenient. When the above magnetic support is used, the two ends of the telescopic reference rod (for example, the steel strands at the two ends of the telescopic reference rod) are respectively inserted into the magnetic support through the holes 51 on the magnetic support, and after the steel strands are tensioned and locked, the magnetic force is released by rotating the knob 52 (as shown in Figure 7 ) on the magnetic support, so that the magnetic support is adsorbed on the rod to be measured, and thus the two ends of the reference rod can be fixed on the two ends of the rod to be measured.

[0043] In addition, in the technical scheme of the present application, the connecting piece has various specific implementation manners, and one specific implementation manner will be taken as an example to introduce the technical scheme of the present application.

[0044] For example, preferably, in one specific embodiment of the present application, the connecting piece comprises: a ring sleeve and an elastic bolt;

[0045] The ring sleeve is fixedly connected with the end turning rod; and the ring sleeve is used to be sleeved on the telescopic reference rod or the rod to be measured.

[0046] The top and bottom of the ring sleeve are provided with elastic bolts; and the elastic bolts are used to make the ring sleeve contact with the telescopic reference rod or the rod to be measured and slide along the telescopic reference rod or the rod to be measured.

[0047] By using the above connecting piece, the two ends of the auxiliary support can be connected with the telescopic reference rod and the rod to be measured respectively.

[0048] In addition, the fixing device can have various specific implementation manners, and one of the specific implementation manners will be taken as an example to introduce the technical scheme of the present application.

[0049] For example, preferably, as shown in Figure 5 and Figure 6 in one specific embodiment of the present application, the fixing device 13 comprises a base 31 and a device fixing ring 32.

[0050] The base 31 is fixed on the auxiliary support 12; for example, the bottom of the base 31 can be fixed on the auxiliary support 12 by means of bolts.

[0051] The device fixing ring 32 is arranged on the top of the base 31 and used for fixing the range finder.

[0052] In addition, preferably, in one specific embodiment of the present application, the telescopic reference rod is composed of a plurality of rod members which are nested with each other, so that the length of the telescopic reference rod can be adjusted according to the actual application, as shown in Figure 2 In addition, each rod member of the telescopic reference rod can also have a preset fixed length, so as to facilitate the positioning of the curved height.

[0053] In addition, preferably, in one specific embodiment of the present application, the telescopic reference rod is provided with scales, so as to facilitate the checking of the curved height at different positions.

[0054] In addition, preferably, in one specific embodiment of the present application, the end turning rod is in a cylindrical shape; one end of the end turning rod is sleeved on the self-resetting rod, and the other end is connected with the middle part of the connecting member. Therefore, the cylindrical end turning rod can rotate correspondingly with the resistance received by the connecting member during the movement, so as to adjust the direction of the automatic adjusting connecting member, so that the connecting member can slide along the telescopic reference rod or the to-be-measured rod member more smoothly.

[0055] In conclusion, in the technical scheme of the present application, the telescopic reference rod of the rod large deflection measuring device can be installed at both ends of the rod to be measured, the two ends of the auxiliary support are connected to the telescopic reference rod and the rod to be measured respectively, and the range finder is installed on the auxiliary support. Therefore, the auxiliary support can be moved to slide at the telescopic reference rod and the rod to be measured respectively, and the corresponding data can be measured by the range finder during the movement of the auxiliary support. After the corresponding calculation according to the obtained data, the bending deflection of the rod to be measured can be obtained. Therefore, the bending deflection of the rod to be measured can be measured by using the above rod large deflection measuring device. In addition, the two ends of the one-way elongation rod of the auxiliary support can be provided with scales, so as to be used for checking the bending deflection measured by the range finder.

[0056] In addition, the rod large deflection measuring device in the present application has simple structure, is convenient to maintain and carry, is easy to operate and install, has high measuring precision, and has simple method and intuitive reading. The rod large deflection measuring device can support the related field investigation and measurement work to the maximum extent.

[0057] The above only describes the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for measuring the large sag of a rod, characterized in that, The device comprises a telescopic reference rod, an auxiliary support, a fixing device and a range finder. The auxiliary support comprises a one-way telescopic rod, end turning rods and two connectors. The one-way telescopic rod can be freely telescoped in one direction. The end turning rods are connected to the one-way telescopic rod at one end and to the connectors at the other end. The end turning rods are used to automatically adjust the direction of the connectors according to the deformation of the rod to be measured. One of the connectors is sleeved on the telescopic reference rod, and the other connector is used to be sleeved on the rod to be measured. The fixing device is fixed to one of the connectors at the bottom end of the auxiliary support. The range finder is fixed to the fixing device. The connectors comprise a ring-shaped sleeve and an elastic bolt. The ring-shaped sleeve is fixedly connected to the end turning rod. The ring-shaped sleeve is used to be sleeved on the telescopic reference rod or the rod to be measured. The top and bottom of the ring-shaped sleeve are provided with elastic bolts. The elastic bolts are used to make the ring-shaped sleeve contact and slide along the telescopic reference rod or the rod to be measured. The fixing device comprises a base and a device fixing ring. The base is fixed to the auxiliary support. The device fixing ring is arranged at the top of the base and is used to fix the range finder.

2. The device according to claim 1, wherein: The end turning rod is cylindrical. One end of the end turning rod is sleeved on the self-resetting rod, and the other end is connected to the middle part of the connector.

3. The device according to claim 1, wherein: The telescopic reference rod is provided with steel strands at both ends. The steel strands are connected to the two ends of the rod to be measured through magnetic supports.

4. The device according to claim 1, wherein: The telescopic reference rod is composed of multiple rod segments nested with each other.

5. The device according to claim 1, wherein: The telescopic reference rod is provided with a scale.

6. The device according to claim 1, wherein: The two ends of the one-way telescopic rod of the auxiliary support are provided with scales.

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