CN105510019A - Compound loading test system for power transmission infrastructure - Google Patents
Compound loading test system for power transmission infrastructure Download PDFInfo
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- CN105510019A CN105510019A CN201610033370.4A CN201610033370A CN105510019A CN 105510019 A CN105510019 A CN 105510019A CN 201610033370 A CN201610033370 A CN 201610033370A CN 105510019 A CN105510019 A CN 105510019A
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention discloses a compound loading test system for a power transmission infrastructure. The compound loading test system for the power transmission infrastructure comprises a rigid frame, and is characterized by also comprising a vertical guide device; the vertical guide device and the rigid frame are fixedly connected with a vertical mobile platform; a horizontal guide device is placed on the vertical mobile platform and is fixedly connected with the vertical mobile platform; a horizontal mobile frame is fixedly connected with the horizontal guide device in a sleeving manner; a vertical loading device is placed at the lower end of the horizontal mobile frame and is fixedly connected with the lower end of the horizontal mobile frame; a horizontal loading device is hinged to the vertical loading device; a test piece clamp is placed below the vertical loading device and is hinged to the vertical loading device. When the compound loading test system for the power transmission infrastructure works: (1) the horizontal loading device applies horizontal force or horizontal displacement to a test component; (2) the vertical loading device provides the same vertical load to act on the test component directly; (3) the vertical loading device applies different vertical displacement to realize moment loading; (4) the pre-applied three-component load is split to obtain a loading displacement function, so as to realize a compound action of a horizontal load (H), a vertical load (V) and a moment load (M).
Description
Technical field
The testing equipment that the present invention relates to is the combined type load test system that horizontal loading (H), vertical load (V) and moment load (M) can be applied on transmission of electricity basic test component by one simultaneously.
Background technology
It is soft that the large-scale development of high-voltage transmission network construction makes transmission tower structural system day tend towards superiority; tower structure not only bears the long terms such as tower body, wire, ground wire, gold utensil deadweight, wind load; but also being subject to the instantaneous or shortterm effect of the unusual environment such as storm, ice load, broken string load, load situation is complicated.These load effects reach basis and ground, except pole and tower foundation vertically being drawn except bearing, pressing vertical load (V), also subject larger horizontal loading (H) and Moment (M).Usually the load mode simultaneously comprising horizontal loading (H), vertical load (V) and moment (M) three components is called multiple computation model.
At present, domestic many colleges and universities and research institute have carried out extensive research for the bearer properties of transmission of electricity basis under multiple computation model.Current research achievement is main mainly with numerical method, and the scholars such as the model celebrating as Ludong University comes, the military section of Shandong University and the Hao Dongxue of Northeast Electric Power University, above-mentioned numerically modeling obtains a lot of useful achievements, has some reference value.But because numerically modeling exists certain supposed premise, cannot rationally describe some real working condition, therefore engineering circles is still general using test method as most important research means.Xing Yue dragon in Zhejiang Province Power Design Institute is waited and has carried out original position full-scale foundation load test in 2008 for digging foundation, tests deformation character and the load-bearing capacity on basis under vertical load+horizontal loading acting in conjunction; Shenyang Building Univ. Wang Jie etc. is studied the Ultimate Up-lift Bearing Capacity of Screw Anchor in sand by indoor model test; Li Yongxiang etc. within 2010, to select Gobi desert foundation of gravelly soil carried out right cylinder digging foundation on pull out and press down bearingtest, and give corresponding method for designing and calculating parameter; Lu Xianlong etc. carry out 40 Gobi desert foundation of gravelly soil undisturbed soils and expand end digging foundation pullout tests, construct the Bearing Capacity Formula of independent uplift load effect; Liu Shengkui etc. selection loess foundation in 2012 carried out column foundation on pull out+horizontal combination operating mode under bearingtest, and analyze Changing Pattern and the damage of soil body pattern of foundation load-displacement.
Can find out, how vertical load and horizontal loading to be combined in above-mentioned experimental study, or only consider vertical uplift load and press down load to test transmission of electricity foundation bearing capacity, load mode also earth anchor reaction frame and the lifting jack of adopting combines more, or artificial preloading pattern etc., test accuracy is not high.In the document delivered, be showed no combined type load test method vertical load, horizontal loading and moment load can being combined applying at present, also have no the pilot system that can realize the loading of above-mentioned combined type for transmission of electricity basis simultaneously.
Summary of the invention
The object of the invention is: a kind of combined type load test system for basis of transmitting electricity is provided, the multiple computation model of horizontal loading (H), vertical load (V) and moment load (M) three components can be realized on transmission of electricity basic test component.
The present invention is realized by following technical scheme: a kind of combined type load test system for basis of transmitting electricity, it comprises rigid frame, vertical lift device and vertical mobile platform, described rigid frame is the fixed cross beam that four root posts support, two groups of vertical lift device are placed in the both sides of rigid frame respectively, the upper end of vertical lift device and the fixed cross beam of rigid frame are connected, lower end and rigid frame hinged, vertical mobile platform is placed in rigid frame, two ends are connected with vertical lift device respectively, it is characterized in that: also comprise vertically-guided device, horizontally-guided device, move horizontally frame, horizontal loading apparatus, vertical loading device, piece fixture, program control device, described vertically-guided device is placed between rigid frame with vertical mobile platform, one end and the rigid frame of vertically-guided device are connected, the other end is connected with vertical mobile platform, described horizontally-guided device to be placed on vertical mobile platform and to be connected, the described frame that moves horizontally to be socketed on horizontally-guided device and to be connected, described vertical loading device is placed in the lower end that moves horizontally frame and is connected, described horizontal loading apparatus is placed in below vertical mobile platform, move horizontally the side of frame, termination and the vertical loading device of horizontal loading apparatus are hinged, described piece fixture is placed in the below of vertical loading device and hinged, horizontal loading apparatus, vertical loading device is electrically connected with program control device respectively.
The structure of described vertically-guided device is: it comprises vertical guide rail and vertical slipper, be connected inside the column that described vertical guide rail is placed in rigid frame, described vertical slipper is placed in the termination of vertical mobile platform and is connected, and is slidably connected between vertical guide rail and vertical slipper.
The structure of described horizontally-guided device is: it comprises guide rail shaped steel, horizontal guide rail and cross sliding clock, described guide rail shaped steel to be placed on vertical mobile platform and to be connected, outside the end face that described horizontal guide rail is placed in guide rail shaped steel respectively and outer side bottom surface being connected, be slidably connected between cross sliding clock and horizontal guide rail.
The described structure moving horizontally frame is tubular body, tubular body move horizontally end face inside frame and bottom surface is connected with the cross sliding clock of horizontally-guided device respectively, to move horizontally on horizontal guide rail that frame is socketed in horizontally-guided device and to realize moving horizontally by the cross sliding clock of horizontally-guided device and horizontally-guided device.
The structure of described vertical loading device is: it comprises body, two dynamic start cylinders of MTS, tension-compression sensor, crank arm and straight-arm, described body comprises base, fixed head and side plate, described base and fixed head are connected by side plate, the base of body upwards, be placed in and move horizontally frame lower end and be connected, two dynamic start cylinders of MTS to be placed in body simultaneously and to be connected, cylinder head stretches out outside the fixed head of body, the cylinder head of a MTS dynamic start cylinder is hinged with the one end of cranking arm by tension-compression sensor, the cylinder head of another MTS dynamic start cylinder is hinged by one end of tension-compression sensor and straight-arm, piece fixture simultaneously with two MTS dynamic start cylinders hinged crank arm or the other end of straight-arm hinged.
The structure of described horizontal loading apparatus is: it comprises fixed mount, the dynamic start cylinder of MTS and tension-compression sensor, described fixed mount be placed in vertical mobile platform below, near being fixed with the dynamic start cylinder of MTS of straight-arm and being connected, the dynamic start cylinder of MTS and fixed mount are connected, and it is outer and hinged by the body of tension-compression sensor and vertical loading device that the cylinder head of MTS dynamic start cylinder stretches out fixed mount.
Described structure of cranking arm is: it comprises galianconism and long-armed, described galianconism and long-armed hinged, and hinged rear galianconism, long-armed total length are equal with straight-arm length, the two ends of cranking arm respectively with tension-compression sensor and piece fixture hinged.
The present invention is described below for the course of work of the combined type load test system on basis of transmitting electricity:
(1) horizontal loading (H) is applied separately: the dynamic start cylinder of MTS of horizontal loading apparatus provides the load of horizontal direction, and the load of horizontal direction is sent to hinged vertical loading device, drive vertical loading device and the frame that moves horizontally be connected thereof carry out overall translation, apply horizontal force or horizontal shift eventually through piece fixture to transmission of electricity basic test component;
(2) vertical load (V) is applied separately: two MTS dynamic start cylinders of vertical loading device provide identical vertical load, apply identical vertical force or vertical displacement to piece fixture, by piece fixture to transmission of electricity basic test component direct effect simultaneously;
(3) moment load (M) is applied separately: apply different vertical displacements respectively by two MTS dynamic start cylinders of vertical loading device, piece fixture is made to produce certain anglec of rotation, the load of horizontal direction is provided by the dynamic start cylinder of the MTS of horizontal loading apparatus simultaneously, to apply horizontal shift, the horizontal shift produced in fixture rotary course is compensated, thus transmission of electricity basic test component can be rotated accurately in the generation of the surrounding target point of rotation, realize moment and load effect;
(4) horizontal loading (H), vertical load (V), the combination of moment load (M) applies: based on the size geometric relationship of this test unit, mathematics intermediate cam function theory is adopted to be split by the three-component load of transmission of electricity basic test top pre-applied, draw the displacement function of three dynamic start cylinders of MTS in loading procedure respectively, custom programming is carried out by the program control device of the dynamic start cylinder of MTS, the displacement of three dynamic start cylinders of MTS in real-time level of control charger and vertical loading device, finally realize horizontal loading (H), vertical load (V), act on while moment load (M).
The invention has the beneficial effects as follows: the elements such as dynamic for MTS start cylinder, tension-compression sensor and stored program controlled combine by the present invention, can select to apply horizontal loading (H), vertical load (V) and moment load (M) individually or simultaneously on transmission of electricity basic test component, its advantage applies had exists:
1. have employed the dynamic start cylinder of MTS, can based on test demand unrestricted choice static state or dynamic load mode;
2. have employed the dynamic start cylinder of MTS, applying power load or displacement load can be selected based on test demand;
3. have employed the dynamic start cylinder of MTS, in process of the test, automatically can carry out power or bit shift compensation, increase substantially test accuracy;
4. have employed stored program controlled, true-time operation can be carried out to hydraulic actuation cylinder, and make co-ordination between three dynamic start cylinders of MTS by custom programming, realize the multiple computation model to basic test component;
3. the present invention fundamentally avoids artificial load mode traditional in process of the test, and the entirety that improve the test of transmission of electricity basic characteristic can be handling.
Accompanying drawing explanation
Fig. 1 is schematic front view of the present invention;
Fig. 2 is that schematic diagram is looked on a left side of Fig. 1;
Fig. 3 is horizontally-guided device of the present invention and the structural representation moving horizontally frame;
Fig. 4 is horizontal loading apparatus structural representation of the present invention;
Fig. 5 is vertical loading device structural representation of the present invention;
Fig. 6 is loading experiment platform schematic diagram of the present invention.
In figure: 1 vertical lift system, 2 rigid frames, 3 vertical mobile platforms, 4 move horizontally frame, 5 bases, the dynamic start cylinder of 6MTS, 7 horizontal loading apparatus, 8 fixed mounts, 9 tension-compression sensors, 10 straight-arms, 11 piece fixtures, 12 crank arm, 13 fixed heads, 14 vertical loading devices, 15 horizontal guide rails, 16 guide rail shaped steel, 17 cross sliding clocks.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
See Fig. 1 ~ Fig. 6, the present embodiment is for the combined type load test system on basis of transmitting electricity, it comprises rigid frame 2, vertical lift device 1 and vertical mobile platform 3, described rigid frame 2 is the fixed cross beam that four root posts support, two groups of vertical lift device 1 are placed in the both sides of rigid frame 2 respectively, the upper end of vertical lift device 1 and the fixed cross beam of rigid frame 2 are connected, lower end and rigid frame 2 hinged, vertical mobile platform 3 is placed in rigid frame 2, two ends are connected with vertical lift device 1 respectively, also comprise vertically-guided device, horizontally-guided device, move horizontally frame 4, horizontal loading apparatus 7, vertical loading device 14, piece fixture 11 and program control device, described vertically-guided device is placed between rigid frame 2 with vertical mobile platform 3, one end and the rigid frame 2 of vertically-guided device are connected, the other end is connected with vertical mobile platform 3, described horizontally-guided device to be placed on vertical mobile platform 3 and to be connected, the described frame 4 that moves horizontally to be socketed on horizontally-guided device and to be connected, described vertical loading device 14 is placed in the lower end that moves horizontally frame 4 and is connected, described horizontal loading apparatus 7 is placed in below vertical mobile platform 3, move horizontally the side of frame 4, termination and the vertical loading device 14 of horizontal loading apparatus 7 are hinged, described piece fixture 11 is placed in the below of vertical loading device 14 and hinged, horizontal loading apparatus 7, vertical loading device 14 is electrically connected with program control device respectively.
The structure of described vertically-guided device is: it comprises vertical guide rail and vertical slipper, be connected inside the column that described vertical guide rail is placed in rigid frame 2, described vertical slipper is placed in the termination of vertical mobile platform 3 and is connected, and is slidably connected between vertical guide rail and vertical slipper.
The structure of described horizontally-guided device is: it comprises guide rail shaped steel 16, horizontal guide rail 15 and cross sliding clock 17, described guide rail shaped steel 16 to be placed on vertical mobile platform 3 and to be connected, outside the end face that described horizontal guide rail 15 is placed in guide rail shaped steel 16 respectively and outer side bottom surface being connected, be slidably connected between cross sliding clock 17 and horizontal guide rail 15.
The described structure moving horizontally frame 4 is rectangular tubular body, rectangular tubular body move horizontally end face inside frame 4 and bottom surface is connected with the cross sliding clock 17 of horizontally-guided device respectively, to move horizontally on horizontal guide rail 15 that frame 4 is socketed in horizontally-guided device and to realize moving horizontally with horizontally-guided device by the cross sliding clock 17 of horizontally-guided device.
The structure of described vertical loading device 14 is: it comprises body, two dynamic start cylinders 6 of MTS, tension-compression sensor 9, to crank arm 12 and straight-arm 10, described body comprises base 5, fixed head 13 and side plate, described base 5 is connected by side plate with fixed head 13, the base 5 of body upwards, be placed in and move horizontally frame 4 lower end and be connected, two dynamic start cylinders 6 of MTS to be placed in body simultaneously and to be connected, cylinder head stretches out outside the fixed head 13 of body, the cylinder head of a MTS dynamic start cylinder 6 by tension-compression sensor 9 with crank arm 12 one end hinged, the cylinder head of another MTS dynamic start cylinder 6 is hinged with one end of straight-arm 10 by tension-compression sensor 9, piece fixture 11 simultaneously with two MTS dynamic start cylinders 6 hinged crank arm 12 or the other end of straight-arm 10 hinged.
The structure of described horizontal loading apparatus 7 is: it comprises fixed mount 8, the dynamic start cylinder 6 of MTS and tension-compression sensor 9, described fixed mount 8 be placed in vertical mobile platform 3 below, near being fixed with the dynamic start cylinder 6 of MTS of straight-arm 10 and being connected, the dynamic start cylinder of MTS 6 and fixed mount 8 are connected, and it is outer and hinged with the body of vertical loading device 14 by tension-compression sensor 9 that the cylinder head of MTS dynamic start cylinder 6 stretches out fixed mount 8.
Described crank arm 12 structure be: it comprises galianconism, long-armed and one-directional rotation axle, described galianconism and long-armed by one-directional rotation axle hinged, hinged rear galianconism, long-armed total length are equal with straight-arm 10 length, crank arm 12 two ends respectively with tension-compression sensor 9 and piece fixture 11 hinged.
The present embodiment adopts prior art manufacture, and the dynamic start cylinder 6 of described MTS and program control device are the commercially available prod of prior art, and its course of work is:
(1) horizontal loading (H) is applied separately: the dynamic start cylinder 6 of MTS of horizontal loading apparatus 7 provides the load of horizontal direction, and the load of horizontal direction is sent to hinged vertical loading device 14, drive vertical loading device 14 and the frame 4 that moves horizontally be connected thereof carry out overall translation, apply horizontal force or horizontal shift eventually through piece fixture 11 to transmission of electricity basic test component;
(2) vertical load (V) is applied separately: two MTS dynamic start cylinders 6 of vertical loading device 14 provide identical vertical load, apply identical vertical force or vertical displacement to piece fixture 11, by piece fixture 11 to transmission of electricity basic test component direct effect simultaneously;
(3) moment load (M) is applied separately: apply different vertical displacements respectively by two MTS dynamic start cylinders 6 of vertical loading device 14, piece fixture 11 is made to produce certain anglec of rotation, the load of horizontal direction is provided by the dynamic start cylinder 6 of the MTS of horizontal loading apparatus 7 simultaneously, to apply horizontal shift, the horizontal shift produced in fixture rotary course is compensated, thus transmission of electricity basic test component can be rotated accurately in the generation of the surrounding target point of rotation, realize moment and load effect;
(4) horizontal loading (H), vertical load (V), the combination of moment load (M) applies: based on the size geometric relationship of this test unit, mathematics intermediate cam function theory is adopted to be split by the three-component load of transmission of electricity basic test top pre-applied, draw the displacement function of three dynamic start cylinders 6 of MTS in loading procedure respectively, custom programming is carried out by the program control device of the dynamic start cylinder 6 of MTS, the displacement of three dynamic start cylinders 6 of MTS in real-time level of control charger 7 and vertical loading device 14, finally realize horizontal loading (H), vertical load (V), act on while moment load (M).
Claims (7)
1. the combined type load test system for basis of transmitting electricity, it comprises rigid frame, vertical lift device and vertical mobile platform, it is characterized in that: also comprise vertically-guided device, horizontally-guided device, move horizontally frame, vertical loading device, horizontal loading apparatus, piece fixture, program control device, described vertically-guided device is placed between rigid frame with vertical mobile platform, one end and the rigid frame of vertically-guided device are connected, the other end is connected with vertical mobile platform, described horizontally-guided device to be placed on vertical mobile platform and to be connected, the described frame that moves horizontally to be socketed on horizontally-guided device and to be connected, described vertical loading device is placed in the lower end that moves horizontally frame and is connected, described horizontal loading apparatus is placed in below vertical mobile platform, move horizontally the side of frame, termination and the vertical loading device of horizontal loading apparatus are hinged, described piece fixture is placed in the below of vertical loading device and hinged, horizontal loading apparatus, vertical loading device is electrically connected with program control device respectively.
2. as claimed in claim 1 for the combined type load test system on basis of transmitting electricity, it is characterized in that: the structure of described vertically-guided device is: it comprises vertical guide rail and vertical slipper, be connected inside the column that described vertical guide rail is placed in rigid frame, described vertical slipper is placed in the termination of vertical mobile platform and is connected, and is slidably connected between vertical guide rail and vertical slipper.
3. as claimed in claim 1 for the combined type load test system on basis of transmitting electricity, it is characterized in that: the structure of described horizontally-guided device is: it comprises guide rail shaped steel, horizontal guide rail and cross sliding clock, described guide rail shaped steel to be placed on vertical mobile platform and to be connected, outside the end face that described horizontal guide rail is placed in guide rail shaped steel respectively and outer side bottom surface being connected, be slidably connected between cross sliding clock and horizontal guide rail.
4. as claimed in claim 1 for the combined type load test system on basis of transmitting electricity, it is characterized in that: described in move horizontally frame structure be tubular body, tubular body move horizontally end face inside frame and bottom surface is connected with the cross sliding clock of horizontally-guided device respectively, to move horizontally on horizontal guide rail that frame is socketed in horizontally-guided device and to realize moving horizontally by the cross sliding clock of horizontally-guided device and horizontally-guided device.
5. as claimed in claim 1 for the combined type load test system on basis of transmitting electricity, it is characterized in that: the structure of described vertical loading device is: it comprises body, two dynamic start cylinders of MTS, tension-compression sensor, crank arm and straight-arm, described body comprises base, fixed head and side plate, described base and fixed head are connected by side plate, the base of body upwards, be placed in and move horizontally frame lower end and be connected, two dynamic start cylinders of MTS to be placed in body simultaneously and to be connected, cylinder head stretches out outside the fixed head of body, the cylinder head of a MTS dynamic start cylinder is hinged with the one end of cranking arm by tension-compression sensor, the cylinder head of another MTS dynamic start cylinder is hinged by one end of tension-compression sensor and straight-arm, piece fixture simultaneously with two MTS dynamic start cylinders hinged crank arm or the other end of straight-arm hinged.
6. as claimed in claim 5 for the combined type load test system on basis of transmitting electricity, it is characterized in that: described in the structure of cranking arm be: it comprises galianconism and long-armed, described galianconism and long-armed hinged, hinged rear galianconism, long-armed total length are equal with straight-arm length, the two ends of cranking arm respectively with tension-compression sensor or piece fixture hinged.
7. as claimed in claim 1 for the combined type load test system on basis of transmitting electricity, it is characterized in that: the structure of described horizontal loading apparatus is: it comprises fixed mount, the dynamic start cylinder of MTS and tension-compression sensor, described fixed mount be placed in vertical mobile platform below, near being fixed with the dynamic start cylinder of MTS of straight-arm and being connected, the dynamic start cylinder of MTS and fixed mount are connected, and it is outer and hinged by the body of tension-compression sensor and vertical loading device that the cylinder head of MTS dynamic start cylinder stretches out fixed mount.
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| CN112942454A (en) * | 2021-04-19 | 2021-06-11 | 天津大学 | V-H composite bearing capacity model test loading equipment and method |
| CN114059604A (en) * | 2021-11-11 | 2022-02-18 | 中国石油大学(华东) | Horizontal, vertical and bending moment composite loading test system and use method thereof |
| CN114061997A (en) * | 2021-10-19 | 2022-02-18 | 南方电网科学研究院有限责任公司 | Power transmission tower section loading test device and method |
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| CN112942454A (en) * | 2021-04-19 | 2021-06-11 | 天津大学 | V-H composite bearing capacity model test loading equipment and method |
| CN114061997A (en) * | 2021-10-19 | 2022-02-18 | 南方电网科学研究院有限责任公司 | Power transmission tower section loading test device and method |
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| CN114059604A (en) * | 2021-11-11 | 2022-02-18 | 中国石油大学(华东) | Horizontal, vertical and bending moment composite loading test system and use method thereof |
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