Steel wire cable force test calibration device based on radar method and vibration method

Abstract

The utility model discloses a steel wire cable force test calibration device based on a radar method and a vibration method, and the device comprises an upper cross beam which is used for fixing the upper end of a to-be-tested steel wire and is provided with a first limiting hole for the to-be-tested steel wire to pass through; the lower cross beam is arranged below the upper cross beam, the lower cross beam and the upper cross beam are arranged at an interval, the lower cross beam is provided with a second limiting hole for a steel wire to be tested to penetrate through, and the second limiting hole is aligned with the first limiting hole; the counterweight disc is positioned below the lower cross beam and is fixed with the lower end of the steel wire to be measured; and the weight assembly comprises at least two weights with different specifications and is used for being connected with the weight plate. The steel wire cable force test calibration device based on the radar method and the vibration method does not need to be equipped with large-scale loading equipment, is energy-saving and environment-friendly, has a simple structure, is durable in parts, can provide a spacious test environment, allows a steel wire with the length of several meters to be used for testing, meets the test requirement of simulating a real working condition by using a longer steel wire sample, and improves the test efficiency. The loading mass can be adjusted according to specific test requirements, and small tension is provided to adapt to low-frequency test conditions.

Description

Technical Field

[0001] The utility model relates to the field of civil engineering testing devices, and more specifically, to a steel wire rope force testing and calibration device based on a radar method and a vibration method. Background Art

[0002] The frequency method is the most commonly used method in engineering to measure cable tension. Using vibration sensors or microwave radar signals, the vibration signal of the steel wire is obtained and the frequency is analyzed. The cable tension is then calculated using a relationship. In laboratories, a tensile testing machine is typically used to cut the steel wire into sections for tensioning.

[0003] However, due to the excessive tension, general steel wire tension test equipment is difficult to meet the test conditions of simulating the lower frequency of real bridge cables. In addition, most existing test devices need to be equipped with large loading equipment, resulting in a large space occupation, while the actual test space left for the steel wire to be tested is very small. The steel wire to be tested needs to be cut to only tens of centimeters, which cannot meet the test conditions of some tests that require the use of longer steel wires. Utility Model Content

[0004] The present utility model aims to overcome at least one defect of the above-mentioned prior art and provide a wire rope tension test and calibration device based on radar method and vibration method, which is used to solve the problem that the wire rope tension test device in the prior art is difficult to meet the test conditions of simulating the lower frequency of the real bridge cable, and cannot meet the test conditions of some tests that require the use of longer steel wires.

[0005] The technical solutions adopted by this utility model are as follows:

[0006] A steel wire rope tension test and calibration device based on radar method and vibration method, comprising:

[0007] The upper crossbeam is used to fix the upper end of the steel wire to be tested and is provided with a first limiting hole for passing the steel wire to be tested;

[0008] a lower crossbeam, disposed below the upper crossbeam and spaced apart from the upper crossbeam, and provided with a second limiting hole for passing the steel wire to be tested, wherein the second limiting hole is aligned with the first limiting hole;

[0009] A counterweight plate, located below the lower crossbeam and fixed to the lower end of the steel wire to be tested;

[0010] The weight assembly includes at least two weights of different specifications and is used to be connected to the counterweight plate.

[0011] In one embodiment, a connecting rope assembly for connecting the weight assembly and the counterweight plate is further included.

[0012] In one embodiment, the counterweight plate is provided with a first penetration hole for passing the steel wire to be tested.

[0013] In one embodiment, the counterweight plate is provided with a second penetration hole for passing the connecting rope assembly.

[0014] In one embodiment, the first through-hole is located at the center of the counterweight plate, and the number of the second through-holes is at least two, with at least two second through-holes being arranged around the first through-hole.

[0015] In one embodiment, the second through holes are evenly spaced around the first through hole.

[0016] In one embodiment, each of the weights is provided with a third penetration hole for passing a connecting rope assembly.

[0017] In one embodiment, the connecting rope assembly includes a steel wire rope passing through the weight assembly and the counterweight plate, and a buckle for fixing the connection.

[0018] In one embodiment, the upper end of the steel wire to be measured is fixed to the upper crossbeam via a first anchor; and / or the lower end of the steel wire to be measured is fixed to the counterweight plate via a second anchor.

[0019] In one embodiment, the steel wire tension test and calibration device based on radar method and vibration method further includes a test radar provided on one side of the steel wire to be tested.

[0020] Compared with the prior art, the beneficial effects of the present invention include at least:

[0021] The steel wire rope tension test and calibration device based on the radar method and the vibration method in this embodiment does not require large-scale loading equipment, is energy-saving and environmentally friendly, has a simple structure, and durable components. It can provide a spacious testing environment and allow the use of several meters of steel wire for testing, meeting the test requirements that require longer steel wire samples to simulate real working conditions. The loading mass can be adjusted according to specific test requirements to provide smaller tension to adapt to low-frequency test conditions. Specifically, when using the steel wire rope tension test and calibration device based on the radar method and the vibration method of the present technical solution, the upper crossbeam and the lower crossbeam are spaced apart and arranged on a temporary support, and the first limit hole and the second limit hole are aligned, and the steel wire to be tested is passed through the first limit hole and the second limit hole, so that the steel wire to be tested always remains vertical; and the upper end of the steel wire to be tested is fixed on the upper crossbeam, and the lower end of the steel wire to be tested is fixed to the counterweight plate, and the counterweight plate is used to cooperate with the weight assembly to achieve loading of different tensile forces through the action of gravity and the weight of the weights, that is, by adding or reducing the weights to provide the required tensile force for the steel wire to be tested, and the theoretical value of the frequency of the steel wire to be tested is converted by the vibration method formula, and calibrated with the actual on-site data of the steel wire frequency tested by the radar method. The steel wire rope tension test and calibration device based on the radar method and the vibration method of the present technical solution relies on the action of gravity and the weight assembly to provide loading. It can be temporarily set up without the need for large-scale loading equipment. It can load small-mass weights to provide corresponding load conditions for low-frequency testing of the steel wire to be tested. In addition, the present technical solution occupies a small horizontal space and can adapt to most sites. The vertical height can be flexibly adjusted and can be used for loading tests of steel wires with larger lengths. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of a wire rope tension test and calibration device based on radar and vibration methods according to an embodiment of the present invention.

[0023] Figure 2 These are a front view and a top view of the upper crossbeam according to an embodiment of the present invention.

[0024] Figure 3 These are three views of the counterweight plate according to the embodiment of the present invention.

[0025] Figure 4 3-view diagram of the weight according to the embodiment of the present invention.

[0026] Figure numerals: 1. Upper crossbeam; 11. First limit hole; 2. First anchor; 3. Steel wire to be tested; 4. Lower crossbeam; 5. Counterweight plate; 51. First through-hole; 52. Second through-hole; 6. Second anchor; 7. Steel wire rope; 8. Buckle; 9. Weight assembly; 91. Weight; 92. Third through-hole; 10. Temporary support. DETAILED DESCRIPTION

[0027] The drawings in this utility model are for illustrative purposes only and are not to be construed as limiting the scope of this utility model. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the products. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0028] like Figure 1-Figure 4 A wire rope tension test and calibration device based on radar method and vibration method is shown, comprising:

[0029] The upper crossbeam 1 is used to fix the upper end of the steel wire 3 to be tested, and is provided with a first limiting hole 11 for passing the steel wire 3 to be tested;

[0030] The lower crossbeam 4 is provided below the upper crossbeam 1 and spaced apart from the upper crossbeam 1 and is provided with a second limiting hole for passing the steel wire 3 to be tested, the second limiting hole being aligned with the first limiting hole 11;

[0031] The counterweight plate 5 is located below the lower crossbeam 4 and is fixed to the lower end of the steel wire 3 to be tested;

[0032] The weight assembly 9 includes at least two weights 91 of different specifications, which are used to be connected to the counterweight plate 5 .

[0033] The steel wire rope tension test and calibration device based on the radar method and the vibration method in this embodiment does not require large-scale loading equipment, is energy-saving and environmentally friendly, has a simple structure, and durable components. It can provide a spacious testing environment and allow the use of several meters of steel wire for testing, meeting the test requirements that require longer steel wire samples to simulate real working conditions. The loading mass can be adjusted according to specific test requirements to provide smaller tension to adapt to low-frequency test conditions. Specifically, when using the steel wire rope tension test and calibration device based on the radar method and the vibration method of this embodiment, the upper crossbeam 1 and the lower crossbeam 4 are spaced apart on the temporary support 10, and the first limit hole 11 and the second limit hole are aligned, and the steel wire 3 to be tested is passed through the first limit hole 11 and the second limit hole, so that the steel wire 3 to be tested always remains vertical; and the upper end of the steel wire 3 to be tested is fixed on the upper crossbeam 1, and the lower end of the steel wire 3 to be tested is fixed to the counterweight plate 5, and the counterweight plate 5 is used to cooperate with the weight assembly 9 to achieve loading of different tensile forces through the action of gravity and the weight of the weight 91, that is, by increasing or decreasing the weight 91 to provide the required tensile force for the steel wire 3 to be tested, and the theoretical value of the frequency of the steel wire to be tested is converted by the vibration method formula, and calibrated with the actual on-site data of the steel wire frequency tested by the radar method. The steel wire rope tension test and calibration device based on the radar method and the vibration method of this embodiment relies on the action of gravity and the weight assembly 9 to provide loading. It can be temporarily set up without the need for large-scale loading equipment. It can load small-mass weights 91 to provide corresponding load conditions for low-frequency testing of the steel wire 3 to be tested. In addition, this technical solution occupies a small horizontal space and can adapt to most venues. The vertical height can be flexibly adjusted and can be used for loading tests of steel wires of larger lengths.

[0034] To facilitate manufacturing and assembly, the upper crossbeam 1 and the lower crossbeam 4 of this embodiment have the same structure.

[0035] The temporary support 10 can be adapted to local conditions according to laboratory conditions. The temporary support 10 of the upper beam 1 can be a crane main beam or a gantry, etc., and the temporary support 10 of the lower beam 4 can be a steel pedestal or a concrete test block, etc.

[0036] This embodiment also includes a connecting rope assembly for connecting the weight assembly 9 and the counterweight plate 5. The connecting rope assembly connects the weight assembly 9 to the counterweight plate 5 to achieve tensile loading due to gravity of the weight 91. Specifically, the connecting rope assembly includes a steel wire rope 7 that passes through the weight assembly 9 and the counterweight plate 5, and a buckle 8 for fixing the connection.

[0037] In this embodiment, the upper end of the steel wire 3 to be tested is fixed to the upper beam 1 via the first anchor 2 .

[0038] In order to facilitate the fixed connection between the counterweight plate 5 and the steel wire 3 to be tested, the counterweight plate 5 described in this embodiment is provided with a first penetration hole 51 for passing the steel wire 3 to be tested. Similar to the fixation of the upper end of the steel wire 3 to be tested, the lower end of the steel wire 3 to be tested is passed through the counterweight plate 5 and the steel wire 3 to be tested is fixed to the counterweight plate 5 by a second anchor 6.

[0039] To facilitate the connection of the connecting rope assembly to the counterweight plate 5 and ensure the reliability of the binding connection, the counterweight plate 5 of this embodiment is provided with a second through-hole 52 for passing the connecting rope assembly. Similarly, each of the weights 91 is provided with a third through-hole 92 for passing the connecting rope assembly. The connection between the counterweight plate 5 and the weights 91 is achieved by passing the wire rope 7 through the counterweight plate 5 and the weights 91 and locking them with the buckle 8.

[0040] In order to ensure that the provided pulling force is sufficiently uniform, in this embodiment, the first penetration hole 51 is arranged at the center of the counterweight plate 5 , and the number of the second penetration holes 52 is at least two, and at least two second penetration holes 52 are arranged around the first penetration hole 51 .

[0041] Specifically, the second through-holes 52 are evenly spaced around the first through-hole 51, and in order to ensure uniform tension, each of the second through-holes 52 has another second through-hole 52 symmetrically along the axis of the first through-hole 51. Therefore, when it is necessary to bind the weight 91, the steel wire rope 7 is passed through the two symmetrically arranged second through-holes 52 and locked by the buckle 8, so that the tension provided by the weight 91 is uniform.

[0042] In this embodiment, the number of the second penetration holes 52 is eight, and the eight second penetration holes 52 are symmetrically and evenly distributed around the periphery of the first penetration hole 51 .

[0043] In addition, in order to save materials, facilitate production, and prevent the counterweight disc 5 from having sharp edges that may scratch the workers, the counterweight disc 5 in this embodiment is set to be circular, that is, the counterweight disc 5 is a counterweight circular disc.

[0044] The weight assembly 9 of this embodiment includes a plurality of steel weights 91 of different specifications to meet different tensile conditions of the test.

[0045] The wire tension test and calibration device based on radar and vibration methods described in this embodiment also includes a test radar located on one side of the test wire 3. The test radar can be placed on a temporary support 10 or other location using a tripod for testing. By adding or removing weights 91 to provide the required tension to the test wire 3, the theoretical value of the test wire's frequency is calculated using the vibration method formula and calibrated against the actual on-site frequency data from the radar method.

[0046] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A wire rope tension test and calibration device based on radar method and vibration method, characterized in that: include: The upper crossbeam is used to fix the upper end of the steel wire to be tested and is provided with a first limiting hole for passing the steel wire to be tested; a lower crossbeam, disposed below the upper crossbeam and spaced apart from the upper crossbeam, and provided with a second limiting hole for passing the steel wire to be tested, wherein the second limiting hole is aligned with the first limiting hole; A counterweight plate, located below the lower crossbeam and fixed to the lower end of the steel wire to be tested; The weight assembly includes at least two weights of different specifications and is used to be connected to the counterweight plate.

2. The wire rope tension test and calibration device based on radar method and vibration method according to claim 1 is characterized in that: Also included is a connecting rope assembly for connecting the weight assembly and the counterweight plate.

3. The wire rope tension test and calibration device based on radar method and vibration method according to claim 2 is characterized in that: The counterweight plate is provided with a first penetration hole for penetrating the steel wire to be tested.

4. The wire rope tension test and calibration device based on radar method and vibration method according to claim 3 is characterized in that: The counterweight plate is provided with a second penetration hole for penetrating the connecting rope assembly.

5. The wire rope tension test and calibration device based on radar method and vibration method according to claim 4 is characterized in that: The first through-hole is arranged at the center of the counterweight plate, and the number of the second through-holes is at least two, and the at least two second through-holes are arranged around the first through-hole.

6. The wire rope tension test and calibration device based on radar method and vibration method according to claim 5, characterized in that: The second penetration holes are evenly spaced around the first penetration hole.

7. The wire rope tension test and calibration device based on radar method and vibration method according to claim 2, characterized in that: Each of the weights is provided with a third penetration hole for penetrating a connecting rope assembly.

8. The wire rope tension test and calibration device based on radar and vibration methods according to claim 7, characterized in that: The connecting rope assembly includes a steel wire rope passing through the weight assembly and the counterweight plate, and a buckle for fixing the connection.

9. The steel wire rope tension test and calibration device based on radar method and vibration method according to any one of claims 1 to 8, characterized in that: The upper end of the steel wire to be tested is fixed to the upper crossbeam via a first anchor; and / or the lower end of the steel wire to be tested is fixed to the counterweight plate via a second anchor.

10. The steel wire rope tension test and calibration device based on radar method and vibration method according to any one of claims 1 to 8, characterized in that: The steel wire tension test and calibration device based on radar method and vibration method also includes a test radar arranged on one side of the steel wire to be tested.

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