CN220339889U - Cable load test device - Google Patents
Cable load test device Download PDFInfo
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- CN220339889U CN220339889U CN202321780020.6U CN202321780020U CN220339889U CN 220339889 U CN220339889 U CN 220339889U CN 202321780020 U CN202321780020 U CN 202321780020U CN 220339889 U CN220339889 U CN 220339889U
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- 238000012360 testing method Methods 0.000 title claims abstract description 79
- 238000006243 chemical reaction Methods 0.000 claims abstract description 68
- 238000009661 fatigue test Methods 0.000 abstract description 41
- 238000011056 performance test Methods 0.000 abstract description 25
- 238000009864 tensile test Methods 0.000 abstract description 14
- 230000003068 static effect Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a inhaul cable load test device, which comprises a first reaction frame, a second reaction frame and a first reaction frame, wherein the first reaction frame is arranged on the first reaction frame; the load sensor is arranged on the first end face in the length direction of the first reaction frame; the first jack is arranged on the second end face in the length direction of the first reaction frame; the first jack is provided with a first oil inlet and a first oil return port; the test cable, its both ends are provided with first stiff end and first stretch-draw end respectively, and the test cable passes load sensor, first reaction frame and first jack in proper order, and the one end that deviates from first reaction frame in load sensor is installed to first stiff end, and the one end that deviates from first reaction frame in first jack is installed to first stretch-draw end. The test device adopts the jack to be matched with the fatigue test pump station and the tensile test oil pump for use, so that the test rope can be subjected to fatigue performance test and tensile performance test; the load sensor is combined, the fatigue stress upper limit and the fatigue stress lower limit of different test ropes can be adapted through the adjustment of the hydraulic pump, and the stress amplitude can be accurately controlled.
Description
Technical Field
The utility model belongs to the technical field of test devices, and particularly relates to a inhaul cable load test device.
Background
The stay cable is used as an important load bearing component of a building and engineering structure to bear complex alternating load, the fatigue performance test and the tensile performance of the stay cable are important tests for testing the fatigue performance and the tensile performance of the stay cable, and the same sample is used for carrying out the tensile performance test after the fatigue performance test is required to be completed in the specification. Most of the existing fatigue testing machines in China are complex in structure, multiple jacks and multiple actuators are needed, the whole testing machine is quite huge, the manufacturing cost is high, only a fatigue performance test can be singly performed, and when a tensile test is performed after the fatigue test, a inhaul cable is required to be detached from the fatigue testing machine and then lifted to the testing machine for the tensile test to perform the test.
The patent with publication number CN101762423B discloses a prestressed anchor cable anchorage test bed, which consists of a static load hydraulic pump station, a fatigue load loading power source device, a test bed clamping device, a data detector and a computer; when the static load hydraulic pump station is started, the piston generates a pulling force on the anchor pre-stressed anchor cable anchorage device, and a static pressure loading test is carried out; when the fatigue load power source device is started, the piston pump generates dynamic pressure, and a pulsating load with a certain frequency is generated on the piston to perform a dynamic pressure loading test.
Although the test bed can be used for a fatigue performance test and a tensile performance test, the mode of applying dynamic load in the fatigue test is that a motor transmits motion to a crank-connecting rod mechanism through a belt pulley to do circular motion so that a piston linearly reciprocates to enable a guy cable to generate dynamic load.
Disclosure of Invention
In order to solve the problems, the utility model aims to provide a stay cable load test device.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a guy cable load test device comprises a first reaction frame;
the load sensor is arranged on the first end face in the length direction of the first reaction frame;
the first jack is arranged on the second end face in the length direction of the first reaction frame; the first jack is provided with a first oil inlet and a first oil return port;
the test cable, its both ends are provided with first stiff end and first stretch-draw end respectively, and the test cable passes load sensor, first reaction frame and first jack in proper order, and the one end that deviates from first reaction frame in load sensor is installed to first stiff end, and the one end that deviates from first reaction frame in first jack is installed to first stretch-draw end.
The first counter-force frame, the load sensor and the first jack are internally provided with coaxially arranged through holes; the test cable is installed in the through hole.
The second end face of the first reaction frame is also provided with a second reaction frame and a second jack connected with the second reaction frame.
The second reaction frame is fixedly connected with the first reaction frame through the first jack.
And a standby rope is arranged in the second reaction frame, and two ends of the standby rope are respectively provided with a second fixed end and a second tensioning end.
The second fixed end of the standby rope is connected with the first jack through a connector, and the second tensioning end of the standby rope is connected with the second jack.
The second jack is provided with a second oil inlet and a second oil return port.
Compared with the prior art, the utility model has the following advantages:
according to the inhaul cable load test device, the jack is matched with the fatigue test pump station and the tensile test oil pump for use, so that the fatigue performance test and the tensile performance test can be performed on the test cable; the fatigue stress upper limit and the lower limit of different test ropes can be adapted by combining the load sensor through the adjustment of the fatigue test pump station and the tensile test oil pump, and the stress amplitude can be accurately controlled.
The test device has a simple structure, does not occupy a large space, can be assembled and disassembled immediately after being used up, is convenient to assemble and disassemble, and can adapt to load tests of inhaul cables with different specifications to the greatest extent.
The utility model further comprises a second reaction frame, a standby rope and a second jack, wherein the standby rope and the second jack bear most of fatigue test load, and when the device is used for fatigue test, the first jack only needs to bear load with the change of the stress amplitude of the fatigue test, namely, the fatigue test pump station can perform fatigue performance test as long as the fatigue test pump station can provide the load with the change of the stress amplitude of the fatigue test. The auxiliary rope is matched with the second jack, so that the fatigue performance test of the large-specification inhaul cable or the large stress amplitude can be realized by using a smaller fatigue test pump station, and the tensile performance test after the fatigue performance test can also be realized by matching with the use of the second jack.
Drawings
In order to more clearly illustrate the technical solutions of specific embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a cross-sectional view of a test device according to a first embodiment of the present utility model;
FIG. 2 is a schematic structural diagram of a second embodiment of the present utility model;
reference numerals: the hydraulic oil-return device comprises a first reaction frame, a 2-load sensor, a 3-first jack, a 4-first oil inlet, a 5-first oil return port, a 6-second reaction frame, a 7-second jack, an 8-standby rope, a 81-second fixed end, a 82-second tensioning end, a 9-second oil inlet, a 10-second oil return port, a 11-connector, a 12-test rope, a 13-first fixed end and a 14-first tensioning end.
Detailed Description
The present utility model will be further described with reference to the drawings and the specific embodiments, but it should not be construed that the scope of the subject matter of the present utility model is limited to the following embodiments, and various modifications, substitutions and alterations made according to the ordinary skill and familiar means of the art to which this utility model pertains are included within the scope of the present utility model without departing from the above technical idea of the utility model.
Example 1
Referring to fig. 1, a cable load test apparatus according to the first embodiment is used in combination with a fatigue test pump station and a tensile test oil pump for testing fatigue performance and tensile performance of a cable 12, and includes a first reaction frame 1; in this embodiment, the first reaction frame 1 includes a main frame body disposed along a length direction, and two end plates disposed at two ends of the main frame body.
The load sensor 2 is arranged on a first end face in the length direction of the first reaction frame 1;
the first jack 3 is arranged on the second end face of the first reaction frame 1 in the length direction; the first jack 3 is arranged to apply a static load and a dynamic load.
A first oil inlet 4 and a first oil return port 5 are arranged on the first jack 3; the first oil inlet 4 and the first oil return port 5 are used for connecting a fatigue test pump station and a tensile test oil pump during testing, so that load is transmitted to the test cable 12 through the first jack 3.
In this embodiment, the fatigue test pump station may be a hydraulic servo pump station, or an electrohydraulic pulsating pump station.
The test cable 12, its both ends are provided with first stiff end 13 and first stretch-draw end 14 respectively, and test cable 12 passes load sensor 2, first reaction frame 1 and first jack 3 in proper order, and first stiff end 13 installs in load sensor 2 the one end that deviates from first reaction frame 1, and first stretch-draw end 14 installs in the one end that first jack 3 deviates from first reaction frame 1. Specifically, a first reaction frame 1, a load sensor 2 and a first jack 3 are internally provided with coaxially arranged through holes; the test cable 12 is installed in the through hole, the first fixed end 13 of the test cable is connected with the load sensor 2, and the first tensioning end 14 is connected with the first jack 3.
The test device in the first embodiment is installed and tested as follows: the test cable 12 is firstly passed through the through hole of the first reaction frame 1, then the load sensor 2 and the first jack 3 are respectively passed through the test cable 12, the load sensor 2 and the first jack 3 are arranged on two end faces of the first reaction frame 1, and the first fixed end 13 and the first tensioning end 14 of the test cable 12 are respectively tightened.
And then the oil inlet pipe and the oil return pipe of the fatigue test pump station are respectively connected into the first oil inlet 4 and the first oil return port 5 on the first jack 3.
And starting the fatigue test pump station, and adjusting the upper limit and the lower limit of the fatigue stress and the stress amplitude required by the test cable 12 to perform the fatigue performance test.
After the fatigue test is finished, the tensile test oil pump can be started to perform tensile performance test by only detaching the oil inlet pipe and the oil return pipe of the fatigue test pump station and respectively connecting the oil inlet pipe and the oil return pipe of the tensile test oil pump into the first oil inlet 4 and the first oil return port 5 of the first jack 3. After the tensile test is completed, the test cable 12 can be removed for inspection.
According to the inhaul cable load test device, the jack is matched with the fatigue test pump station and the tensile test oil pump for use, so that the fatigue performance test and the tensile performance test can be performed on the test cable 12; and the upper limit and the lower limit of the fatigue stress of different test ropes 12 can be adapted by adjusting the hydraulic pump through the load sensor 2, and the stress amplitude can be accurately controlled.
The test device has a simple structure, does not occupy a large space, can be assembled and disassembled immediately after being used up, is convenient to assemble and disassemble, and can adapt to load tests of inhaul cables with different specifications to the greatest extent.
Example two
Because the fatigue test pump station provides limited stress, the fatigue test pump station is required to provide larger stress for the inhaul cable with higher upper limit and lower limit of the fatigue stress, and thus the fatigue test pump station is required to be put into larger.
On the basis of the first embodiment, the fatigue test device further comprises a second reaction frame 6, a standby rope 8 and a second jack 7, wherein most of fatigue test loads are born by the standby rope 8 and the second jack 7, and when the fatigue test device is used for a fatigue test, the first jack 3 only needs to bear loads with the fatigue test stress amplitude variation, namely, a fatigue test pump station can perform a fatigue performance test as long as the load with the fatigue test stress amplitude variation can be provided. The auxiliary rope 8 is matched with the second jack 7, so that the fatigue performance test of a large-specification inhaul cable or a large stress amplitude can be realized by using a smaller fatigue test pump station, and the tensile performance test after the fatigue performance test can also be realized by matching with the use of the second jack 7.
In this embodiment, the fatigue test pump station may be an electrohydraulic servo pump station, or an electrohydraulic pulsation pump station.
Specifically, referring to fig. 2, the test apparatus according to the second embodiment includes a first reaction frame 1, and a load sensor 2 is provided on a first end surface of the first reaction frame 1 in the longitudinal direction.
A second reaction frame 6 and a second jack 7 connected to the second reaction frame 6 are connected to a second end surface in the longitudinal direction of the first reaction frame 1; the second reaction frame 6 is fixedly connected with the first reaction frame 1 through the first jack 3, specifically, the first jack 3 is arranged in the second reaction frame 6, the first fixed end 13 of the test cable 12 is connected with the load sensor 2, the other end of the test cable 12 sequentially passes through the first reaction frame 1, one end face of the second reaction frame 6 and the first jack 3, and is connected with one end, deviating from the first reaction frame 1, of the first jack 3 through the first tensioning end 14; the second jack 7 is arranged on the other end face of the second reaction frame 6, namely the second jack 7 is arranged on the end face of the second reaction frame 6, which is away from one end of the first reaction frame 1; and a second oil inlet 9 and a second oil return port 10 are arranged on the second jack 7.
In the present embodiment, the first reaction frame 1 and the second reaction frame 6 have the same main structure, and the length thereof can be specifically set according to the actual test.
A standby rope 8 is further arranged in the second reaction frame 6, and a second fixed end 81 and a second tensioning end 82 are respectively arranged at two ends of the standby rope 8.
The second fixed end 81 of the spare cable 8 is connected with the first jack 3 through the connector 11, and the second tensioning end 82 of the spare cable 8 is connected with the second jack 7. Specifically, one end of the connector 11 is connected to the first jack 3 through the first tensioning end 14 of the test cable 12, and the other end of the connector 11 is connected to the second fixed end 81 of the spare cable 8, that is, the second fixed end 81 of the spare cable 8 is mounted in the connector 11. The other end of the standby rope 8 sequentially passes through the second reaction frame 6 and the second jack 7 and is fixed on one end face of the second jack 7, which is away from the second reaction frame 6, through the second tensioning end 82.
When the test device in the second embodiment is adopted for the test, the first fixed end 13 of the test cable 12 is connected with the load sensor 2, the other end sequentially passes through the load sensor 2, the first reaction frame 1, one end face of the second reaction frame 6 and the first jack 3, and then is fixed on the first jack 3 through the first tensioning end 14 of the test cable 12, meanwhile, one end of the connector 11 is fixed with the first jack 3 through the first tensioning end 14 of the test cable 12, the other end of the connector 11 is connected with the second fixed end 81 of the standby cable 8, and the other end of the standby cable 8 sequentially passes through the second reaction frame 6 and the second jack 7 and is fixed on one end of the second jack 7 deviating from the second reaction frame 6 through the second tensioning end 82. And then starting the tensile test oil pump to enable the second jack 7 to be loaded to be close to the lower limit of fatigue stress, namely gradually transmitting the load to the test cable 12 through the standby cable 8 and the connector 11, locking the tensile test oil pump, and enabling the second jack 7 to be stable in pressure. And then starting the fatigue test pump station to load the first jack 3, enabling the first jack 3 to prop against the connector 11 until the load of the test cable 12 reaches the lower limit of fatigue stress, and finally adjusting the upper limit of the fatigue stress and the stress amplitude required by the test cable 12, thus carrying out the fatigue performance test.
After the fatigue test is finished, the tensile performance test can be performed by only unloading the first jack 3 and the second jack 7 and then reloading the second jack 7. After the tensile test is completed, the test cable 12 can be removed for inspection.
In this embodiment, the stress provided by the fatigue test pump station is limited, when the fatigue test pump station is required to provide larger stress for the guy cable with higher upper and lower limits of the fatigue stress, the spare cable 8 can be used in cooperation, the spare cable 8 carries larger pulling force after the second jack 7 is tensioned, the first jack 3 connected with the test cable 12 and the fatigue test pump station do not need to apply larger force, and the larger fatigue test pump station does not need to be input, namely, the fatigue performance test of the large-specification guy cable or large stress amplitude can be realized by adopting the smaller fatigue test pump station.
The cable load test device provided by the utility model is described in detail, specific examples are applied to illustrate the structure and the working principle of the cable load test device, and the description of the above embodiments is only used for helping to understand the method and the core idea of the cable load test device. It should be noted that it will be apparent to those skilled in the art that various improvements and modifications can be made to the present utility model without departing from the principles of the utility model, and such improvements and modifications fall within the scope of the appended claims.
Claims (7)
1. The utility model provides a cable load test device which characterized in that: comprises a first reaction frame (1);
the load sensor (2) is arranged on the first end face of the first reaction frame (1) in the length direction;
the first jack (3) is arranged on the second end face of the first reaction frame (1) in the length direction; a first oil inlet (4) and a first oil return port (5) are arranged on the first jack (3);
the test cable (12) is provided with a first fixed end (13) and a first tensioning end (14) at two ends respectively, the test cable (12) sequentially penetrates through the load sensor (2), the first counter-force frame (1) and the first jack (3), the first fixed end (13) is mounted at one end, deviating from the first counter-force frame (1), of the load sensor (2), and the first tensioning end (14) is mounted at one end, deviating from the first counter-force frame (1), of the first jack (3).
2. The cable load testing device of claim 1, wherein: a first counter-force frame (1), a load sensor (2) and a first jack (3) are internally provided with coaxially arranged through holes; the test cable (12) is mounted in the through hole.
3. The cable load testing device of claim 1, wherein: a second reaction frame (6) and a second jack (7) connected with the second reaction frame (6) are also arranged on the second end face of the first reaction frame (1).
4. A cable load testing device according to claim 3, wherein: the second reaction frame (6) is fixedly connected with the first reaction frame (1) through the first jack (3).
5. The cable load testing device of claim 4, wherein: a standby rope (8) is arranged in the second reaction frame (6), and a second fixed end (81) and a second tensioning end (82) are respectively arranged at two ends of the standby rope (8).
6. The cable load testing device of claim 5, wherein: the second fixed end (81) of the standby rope (8) is connected with the first jack (3) through the connector (11), and the second tensioning end (82) of the standby rope (8) is connected with the second jack (7).
7. The cable load testing device of claim 6, wherein: the second jack (7) is provided with a second oil inlet (9) and a second oil return port (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321780020.6U CN220339889U (en) | 2023-07-07 | 2023-07-07 | Cable load test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321780020.6U CN220339889U (en) | 2023-07-07 | 2023-07-07 | Cable load test device |
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| Publication Number | Publication Date |
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| CN220339889U true CN220339889U (en) | 2024-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321780020.6U Active CN220339889U (en) | 2023-07-07 | 2023-07-07 | Cable load test device |
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| CN (1) | CN220339889U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674692A (en) * | 2022-03-25 | 2022-06-28 | 重庆交通大学 | A cable testing machine |
| CN119321956A (en) * | 2024-10-25 | 2025-01-17 | 山东大学 | Device and method for testing stress relaxation of winding-formed fiber reinforced composite material |
-
2023
- 2023-07-07 CN CN202321780020.6U patent/CN220339889U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114674692A (en) * | 2022-03-25 | 2022-06-28 | 重庆交通大学 | A cable testing machine |
| CN114674692B (en) * | 2022-03-25 | 2024-08-16 | 重庆交通大学 | A cable testing machine |
| CN119321956A (en) * | 2024-10-25 | 2025-01-17 | 山东大学 | Device and method for testing stress relaxation of winding-formed fiber reinforced composite material |
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