CN220305059U - General cable fatigue strength experimental facilities - Google Patents
General cable fatigue strength experimental facilities Download PDFInfo
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- CN220305059U CN220305059U CN202321797169.5U CN202321797169U CN220305059U CN 220305059 U CN220305059 U CN 220305059U CN 202321797169 U CN202321797169 U CN 202321797169U CN 220305059 U CN220305059 U CN 220305059U
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- fatigue strength
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- 238000012360 testing method Methods 0.000 claims abstract description 11
- 230000007246 mechanism Effects 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 abstract description 17
- 230000033001 locomotion Effects 0.000 abstract description 17
- 230000009466 transformation Effects 0.000 abstract description 13
- 230000009471 action Effects 0.000 abstract description 11
- 238000002474 experimental method Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000009661 fatigue test Methods 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model relates to the field of cable fatigue test and discloses general cable fatigue strength test equipment, which comprises a rack, wherein a support is arranged at the top of the rack, a guide rail is arranged on one side of the support, a slide bar is connected to the guide rail in a sliding manner, and a sliding groove and a threading hole are formed in the slide bar; one side of the sliding rod is provided with a swinging rod, one end of the swinging rod is embedded in the sliding groove, and the other end of the swinging rod is connected with a servo driving assembly; under the drive of the servo driving assembly, the sliding rod drives the cable main body to do reciprocating linear motion along the direction of the guide rail, and further continuous rotary motion is converted into continuous reciprocating motion, so that measurement experiments are conducted aiming at fatigue damage emphasis of various types of cables under the action of different amplitudes, and reliable data support is provided for production units and use units of power transmission and transformation cables respectively for processing and manufacturing of the cables and cable selection and later maintenance.
Description
Technical Field
The utility model relates to the field of cable fatigue test, in particular to general cable fatigue strength experimental equipment.
Background
The cables comprise a plurality of power cables, control cables, compensation cables, shielding cables, high-temperature cables, computer cables, signal cables and the like, and are composed of single-strand or multi-strand wires and insulating layers, are usually laid in scenes such as underground, air and the like, and are mainly used for connecting circuits, electric appliances and the like so as to carry out electric energy transmission and distribution; in the aspect of electric energy transmission, two types of power transmission and transformation exist, and certain distinction exists between the two types; the power transmission and transformation is that the power grid supplies power to a user, the process of step-down high voltage is performed, the power transmission and transformation is that the power plant transmits power to the power grid, and the process of step-up low voltage is performed for long-distance power transmission.
However, under the existing conditions, there is no method for simulating the condition that the power transmission and transformation cable erected in the air swings fast and slowly under the action of wind force, and there is also no method for simulating the movement condition of the cable fixed position at the top of the power transmission and transformation cable, so that the abrasion or service life data of the power transmission and transformation cable measured position cannot be conveniently obtained.
Disclosure of Invention
The utility model aims to solve the problem of providing general cable fatigue strength experimental equipment, which is controlled by a servo driving assembly to convert continuous rotary motion into continuous reciprocating motion so as to carry out measurement experiments aiming at the fatigue damage emphasis of power transmission and transformation cables with different materials, different diameters and different protection requirements under the action of different amplitudes.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a general cable fatigue strength experimental facilities, includes the frame, the top of frame is provided with support and supporting component, and the one end of the cable main body of awaiting measuring is fixed in on the support, and the other end bypasses the top of supporting component is connected with unsettled counter weight mechanism; one side of the support is provided with a guide rail, a slide bar is connected to the guide rail in a sliding way, and a sliding groove and a threading hole for the cable main body to pass through are formed in the slide bar; one side of the slide bar, which is opposite to the guide rail, is provided with a swing rod, one end of the swing rod is movably embedded in the sliding groove, and the other end of the swing rod is connected with a servo driving assembly for driving the swing rod to rotate.
In a preferred embodiment of the present utility model, the supporting assembly includes a supporting frame installed on the top of the frame, one end of the supporting frame extends to the outside of the frame and is rotatably provided with a pulley, and one end of the cable main body is vertically connected downward to the weight mechanism after bypassing the pulley.
In a preferred embodiment of the present utility model, the servo driving assembly includes a mounting seat disposed at the top of the frame, a servo motor is disposed on the mounting seat, and an output end of the servo motor is connected with the swing rod.
In a preferred embodiment of the utility model, the output end of the servo motor is connected with a rotating shaft through a coupler, one end of the rotating shaft is fixedly connected with the swing rod, and the rack is also provided with a bracket for supporting the rotating shaft.
In a preferred embodiment of the present utility model, a T-shaped hole for accommodating the cable main body, the swing rod and the slide rod is formed at the top of the rack, and the support frame is provided with one side of the T-shaped hole.
In a preferred embodiment of the utility model, one side of the T-shaped hole is provided with an L-shaped frame for mounting the guide rail, and the guide rail is perpendicular to the top surface of the frame.
In a preferred embodiment of the utility model, two guide rails are arranged and connected with the sliding rod through sliding blocks, and the sliding blocks can reciprocate along the guide rails.
The utility model solves the defects existing in the background technology, and has the beneficial effects that:
(1) According to the utility model, under the drive of the servo driving assembly, the sliding rod drives the cable main body to do reciprocating linear motion along the direction of the guide rail so as to simulate the condition of rapid and slow swinging under the action of wind power, continuous rotary motion can be converted into continuous reciprocating motion through the equipment, so that measurement experiments can be carried out aiming at fatigue damage emphasis of various types of cables under the action of different amplitudes, and reliable data support can be provided for production units and use units of power transmission and transformation cables respectively for processing and manufacturing of the cables, cable type selection and later maintenance.
(2) According to the utility model, the actual wind power is simulated through the action of the weight balancing mechanism on the cable main body, and the tension value brought by wind power with different sizes to the cable main body can be simulated through changing the weight balancing mechanisms with different weights, so that the data measured through experiments are more convincing.
Drawings
The utility model will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of the construction of a preferred embodiment of the present utility model;
FIG. 2 is a schematic diagram of the front view of the preferred embodiment of the present utility model;
FIG. 3 is a schematic top view of a preferred embodiment of the present utility model;
FIG. 4 is a schematic view of the connection of the swing link and the slide bar in the preferred embodiment of the present utility model;
wherein, 1, the frame; 2. a support; 3. a cable body; 41. a support frame; 42. a pulley; 51. a mounting base; 52. a servo motor; 53. swing rod; 54. a slide bar; 55. a chute; 61. a guide rail; 62. a slide block; 63. an L-shaped frame; 7. a weight mechanism; 8. a T-shaped hole; 9. a rotating shaft; 91. and (3) a bracket.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and examples, which are simplified schematic illustrations of the basic structure of the utility model, which are presented only by way of illustration, and thus show only the structures that are relevant to the utility model.
As shown in fig. 1-4, a general cable fatigue strength test device comprises a frame 1, wherein a support 2 and a supporting component are arranged at the top of the frame 1, one end of a cable main body 3 is fixed on the support 2, the other end bypasses the top of the supporting component to freely droop and is connected with a weight mechanism 7, and the weight mechanism 7 can adopt weights and has the function of straightening the cable main body 3.
One side of the support 2 is provided with a guide rail 61, the guide rail 61 is connected with a slide bar 54 in a sliding way, and the slide bar 54 is provided with a sliding groove 55 and a threading hole for the cable main body 3 to pass through; one side of the slide bar 54, which is opposite to the guide rail 61, is provided with a swing rod 53, one end of the swing rod 53 is movably embedded in the slide groove 55, and the other end is connected with a servo driving component for driving the swing rod 53 to rotate. Specifically, the aluminum sleeve is embedded in the threading hole, so that unnecessary abrasion to the cable main body 3 in the using process can be reduced due to softer texture; the servo driving assembly drives the swing rod 53 to rotate, and then drives one end of the swing rod 53 to slide along the sliding groove 55, and under the double action of the swing rod 53 and the guide rail 61, the sliding rod 54 can only do reciprocating linear motion along the guide rail 61, so that the cable main body 3 is driven to continuously swing, and the condition that an aerial power transmission and transformation cable swings fast and slowly under the action of wind power is simulated.
The cable main body 3 can be driven to continuously swing through the swing rod 53, the guide rail 61, the slide rod 54, the sliding groove 55 and other elements on the swing rod; in this process, in order to avoid interference between the above components and the top of the rack 1, a T-shaped hole 8 for accommodating the cable body 3, the swing rod 53 and the slide rod 54 may be formed on the top of the rack 1, so that the cable body 3 and each element can move smoothly.
Further, two guide rails 61 are arranged, are perpendicular to the top surface of the frame 1 and are connected with the slide bars 54 through slide blocks 62, the slide blocks 62 can reciprocate along the guide rails 61, the guide rails 61 are arranged on L-shaped frames 63, and the L-shaped frames 63 are arranged on the top of the frame 1 and are positioned on one side of the T-shaped holes 8; the guide rail 61 and the slider 62 constitute a guide mechanism which functions to define the direction of movement of the slide bar 54 and to avoid frictional wear between the slide bar 54 and the guide rail 61, whereas the guide rail 61 may take on a circular profile.
The servo driving assembly comprises a mounting seat 51 arranged at the top of the frame 1, a servo motor 52 is arranged on the mounting seat 51, and the output end of the servo motor 52 is connected with the swing rod 53, namely, the swing rod 53 is driven to rotate continuously through the torque output by the servo motor 52.
Further, the output end of the servo motor 52 is connected with a rotating shaft 9 through a coupling, one end of the rotating shaft 9 is fixedly connected with the swing rod 53, and a bracket 91 for supporting the rotating shaft 9 is further arranged on the frame 1. The bracket 91 is connected with the rotating shaft 9 through a bearing, the torque of the servo motor 52 can be better transmitted to the swinging rod 53 through the rotating shaft 9 by utilizing a coupler, so that the defect that the length of an output shaft of the existing motor is limited is overcome, and the amplitude of the cable main body 3 can be adjusted by adjusting the connection position of the rotating shaft 9 and the swinging rod 53, namely, the length of a resistance arm of the swinging rod 53.
As shown in fig. 1-3, the support assembly includes a support bracket 41, one side of the support bracket 41 provided with the T-shaped aperture 8. One end of the supporting frame 41 extends to the outside of the frame 1 and is rotatably provided with a pulley 42, the pulley 42 is also made of aluminum material, so that unnecessary abrasion to the cable body 3 is reduced, and the supporting assembly is used for ensuring that one end of the cable body 3 can freely fall away from the frame 1. One end of the cable main body 3 is vertically downwards connected with the counterweight mechanism 7 after passing around the pulley 42; the actual wind power is simulated through the action of the weight balancing mechanism 7 on the cable main body 3, and the tension value brought by wind power with different sizes to the cable main body 3 can be simulated through changing the weight balancing mechanism 7 with different weights, so that the data measured through experiments are more fit with the actual data.
The insulator is a special insulation control, can play an important role in the China of the overhead transmission line, and can withstand voltage and mechanical stress; when it is arranged on the cable body 3, the two supports 2 are provided, the insulator can be placed between the two supports 2 and the cable body 3 is fixed on the supports 2, and the test point of the device on the cable body 3 is at the connection position between the device and the supports 2, in particular at the connection position near one side of the supporting component.
Besides the above, the device is also connected to a computer control system, a touch screen connected with the system and the device is arranged at the top of the frame 1 to serve as an experiment operation unit, the digital control system is used for inputting and controlling the oscillating frequency of the cable every minute, the real environment of the cable in the power transmission and transformation or distribution process is restored from multiple angles, and the experiment test data is ensured to have higher persuasion.
The fatigue strength detection experiment for the cable body 3 is performed by using the above disclosed technical scheme, and the specific working principle thereof is as follows:
the equipment adopts a servo motor 52 as a power source, and a touch screen is used as an experimental operation unit; the rotation power of the servo motor 52 is transmitted to the swing rod 53 through the rotating shaft 9, one end of the swing rod 53 slides in the sliding groove 55 along with the rotation of the swing rod, and then the sliding rod 54 is driven to do reciprocating linear motion along a guiding mechanism, and the guiding mechanism is composed of a guide rail 61 and a sliding block 62, so that the cable main body 3 is further driven to do reciprocating swing, and continuous rotation motion is converted into continuous reciprocating motion, so that a measurement experiment is conducted aiming at fatigue failure emphasis of various types of cables under the action of different amplitudes.
The continuous cable swing phenomenon can be generated when the experiment is started, the swing times and the swing speed of the tested cable can be flexibly set through software, the tested point of the cable can be observed at any time in the process, and the damage condition and the motion data can be recorded in time, so that a fatigue life report is formed.
In summary, the servo driving assembly is used for controlling, continuous rotary motion is converted into continuous reciprocating motion, so that measurement experiments are carried out aiming at fatigue damage emphasis of power transmission and transformation cables with different materials, different diameters and different protection requirements under the action of different amplitudes, cables in various materials, models and armor forms can be measured, and the cable measuring device has good universality. The device can be applied to power transmission and transformation cable production enterprises, is used as an important experimental device in a laboratory, can effectively simulate the field use state, reliably measure the fatigue strength data of various cables, is used for monitoring the quality of products, and is used for guiding the mass production of the cables; in addition, reliable data support can be provided for cable selection and later maintenance by the use unit.
The above-described preferred embodiments according to the present utility model are intended to suggest that, from the above description, various changes and modifications can be made by the person skilled in the art without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (7)
1. A general cable fatigue strength experimental facilities, its characterized in that: the cable testing device comprises a rack (1), wherein a support (2) and a supporting component are arranged at the top of the rack (1), one end of a cable main body (3) to be tested is fixed on the support (2), and the other end bypasses the top of the supporting component to be connected with a suspended counterweight mechanism (7); one side of the support (2) is provided with a guide rail (61), the guide rail (61) is connected with a slide bar (54) in a sliding way, and the slide bar (54) is provided with a sliding groove (55) and a threading hole for the cable main body (3) to pass through; one side of the sliding rod (54) opposite to the guide rail (61) is provided with a swinging rod (53), one end of the swinging rod (53) is movably embedded in the sliding groove (55), and the other end of the swinging rod is connected with a servo driving assembly for driving the swinging rod (53) to rotate.
2. The universal cable fatigue strength testing apparatus of claim 1, wherein: the support assembly comprises a support frame (41) arranged at the top of the frame (1), one end of the support frame (41) extends to the outer side of the frame (1) and is rotatably provided with a pulley (42), and one end of the cable main body (3) bypasses the pulley (42) and then is vertically downwards connected with the counterweight mechanism (7).
3. The universal cable fatigue strength testing apparatus of claim 1, wherein: the servo driving assembly comprises a mounting seat (51) arranged at the top of the frame (1), a servo motor (52) is arranged on the mounting seat (51), and the output end of the servo motor (52) is connected with the swing rod (53).
4. A universal cable fatigue strength testing device according to claim 3, wherein: the output end of the servo motor (52) is connected with a rotating shaft (9) through a coupler, one end of the rotating shaft (9) is fixedly connected with the swing rod (53), and a bracket (91) for supporting the rotating shaft (9) is further arranged on the frame (1).
5. The universal cable fatigue strength testing apparatus according to claim 2, wherein: t-shaped holes (8) for accommodating the cable main body (3), the swing rods (53) and the sliding rods (54) are formed in the top of the rack (1), and one side of each T-shaped hole (8) is arranged on the supporting frame (41).
6. The universal cable fatigue strength testing apparatus of claim 5, wherein: one side of the T-shaped hole (8) is provided with an L-shaped frame (63) for installing the guide rail (61), and the guide rail (61) is perpendicular to the top surface of the frame (1).
7. The universal cable fatigue strength testing apparatus of claim 6, wherein: the guide rails (61) are two, are connected with the sliding rods (54) through sliding blocks (62), and the sliding blocks (62) can reciprocate along the guide rails (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321797169.5U CN220305059U (en) | 2023-07-10 | 2023-07-10 | General cable fatigue strength experimental facilities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321797169.5U CN220305059U (en) | 2023-07-10 | 2023-07-10 | General cable fatigue strength experimental facilities |
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| Publication Number | Publication Date |
|---|---|
| CN220305059U true CN220305059U (en) | 2024-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321797169.5U Active CN220305059U (en) | 2023-07-10 | 2023-07-10 | General cable fatigue strength experimental facilities |
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| CN (1) | CN220305059U (en) |
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2023
- 2023-07-10 CN CN202321797169.5U patent/CN220305059U/en active Active
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