CN107700559B - Tension-compression integrated connecting device for power transmission line tower foundation strength test - Google Patents
Tension-compression integrated connecting device for power transmission line tower foundation strength test Download PDFInfo
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- CN107700559B CN107700559B CN201711242727.0A CN201711242727A CN107700559B CN 107700559 B CN107700559 B CN 107700559B CN 201711242727 A CN201711242727 A CN 201711242727A CN 107700559 B CN107700559 B CN 107700559B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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- General Engineering & Computer Science (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
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Abstract
The invention provides a tension-compression integrated connecting device for a power transmission line tower foundation strength test, which comprises an upper connecting body and a lower connecting body, wherein the lower connecting body comprises a base, the upper connecting body comprises a pressing plate, the base comprises a bottom plate, a first mounting hole connected with a foundation bolt is formed in the bottom plate, a support connecting mechanism is arranged on the bottom plate, a pressing plate is arranged at the upper part of the support connecting mechanism, a second mounting hole connected with a counterforce device is formed in the pressing plate, a long hole is formed in the middle of the pressing plate corresponding to the support connecting mechanism, and the top end of the support connecting mechanism penetrates through the long hole in the pressing plate to be connected with a tension device. The connecting device capable of simultaneously meeting the external force transmission requirements of the tensile force and the pressure resistance in the tower foundation test is formed by the foundation bolt connected with the tower foundation, the base connected with the tension device and the pressing plate connected with the counter force device, and the connecting device is reasonable in structure and convenient to assemble, and effectively avoids the problem that the connecting device cannot be disassembled after the foundation bolt is influenced by the tensile test.
Description
Technical Field
The invention relates to the technical field of power transmission lines, in particular to a tension-compression integrated connecting device for a power transmission line tower foundation strength test.
Background
According to the stress condition of the power transmission line tower foundation, when the strength test of the power transmission line tower foundation is carried out, not only is the pressure resistance test of the foundation carried out, but also the tensile test of the foundation is carried out; the power transmission line foundation test is different from a common building foundation, the building foundation is simpler in connection between the foundation and the counter-force device and has no replacement condition because no tensile test is carried out, and for the power transmission line tower foundation strength test, in order to obtain data close to the actual condition, repeated external force application tests are required to be carried out between the tensile test and the pressure test; according to the operation experience of the power transmission line, after the iron tower foundation is acted by the upward pulling force, the nuts and the screw rods of the foundation bolts deform due to the extrusion of the bottom plates of the tower feet, so that the nuts cannot be normally disassembled, and the test period and the difficulty are increased for the foundation strength test.
The invention discloses a tension test device for an electric pole, which comprises an electric pole, wherein the bottom of the electric pole is fixedly connected to a fixed seat, the fixed seat is connected with a first cross beam and a second cross beam through an upright post, the first cross beam is connected with a group of clamp devices, the front side of the electric pole is connected with a load dynamometer and a deflection meter, the second cross beam is connected with a group of connecting rods, each connecting rod is provided with an image recorder, the image recorder is correspondingly arranged with the electric pole, the second cross beam is also connected with a group of fixing rods, and each fixing rod is provided with a pressure sensor which is correspondingly arranged with the electric pole. The invention has the advantages that: the invention fixes the bottom of the electric pole, the middle of the electric pole is lifted by the hanging frame to be in a horizontal state, the other end of the electric pole is connected with the load dynamometer and the deflection meter, the image recorder is arranged around the electric pole, the image is projected onto the display screen, and the sensors are respectively used for sensing the deformation of the electric pole around the electric pole, so that the change of the electric pole is detected in all directions. However, the invention has the above-mentioned problems that the screw and the nut are easily deformed after being subjected to a tensile force, resulting in difficulty in disassembly.
Disclosure of Invention
In view of the above, the invention provides a tension-compression integrated connection device for a transmission line tower foundation strength test, which is used for solving the problem that the tension-compression connection device cannot be installed because the nuts and the screws of foundation bolts are deformed due to extrusion in the conversion process from a tension test to a tension test.
In order to solve the technical problems, the invention provides a tension-compression integrated connecting device for a power transmission line tower foundation strength test, which comprises an upper connecting body and a lower connecting body, wherein the lower connecting body comprises a base connected with foundation bolts of a tower foundation and a tension device, the upper connecting body comprises a pressing plate connected with a bearing mechanism of a counter force device, the base comprises a bottom plate, a first mounting hole connected with the foundation bolts is formed in the bottom plate, a supporting connecting mechanism is arranged on the bottom plate, the pressing plate is arranged on the upper part of the supporting connecting mechanism, a second mounting hole connected with the counter force device is arranged on the pressing plate, a long hole is formed in the middle of the pressing plate corresponding to the supporting connecting mechanism, and the top end of the supporting connecting mechanism penetrates through the long hole in the pressing plate and is connected with the tension device.
Further, the base is an integral mechanism, the bottom plate is square, the first mounting holes are formed in four corners of the bottom plate, the first mounting holes are round holes, and the aperture and the position of the first mounting holes are matched with foundation bolts of a tower foundation for strength test.
Further, the support coupling mechanism includes first riser and the second riser of welding setting on the bottom plate, first riser and second riser set up perpendicularly on the bottom plate, the second riser is two, first riser is perpendicular with the second riser, the second riser with the central line of first riser is connected, the second riser sets up respectively the both sides of first riser, the front and back side of first riser respectively with two limit connections of symmetry on the bottom plate, the outside of second riser with two other limit connections on the bottom plate, the welding sets up triangle-shaped's connecting plate in the middle of the top of first riser, the connecting plate with slot hole on the clamp plate cooperatees, the slot hole is rectangular structure, set up on the connecting plate with the connecting hole that the tension device is connected, first riser and second riser upper end are smooth and lie in the coplanar, just first riser and second riser upper end bear the clamp plate.
Further, the lower extreme both sides of side set up first stiffening plate around the first riser, first stiffening plate with the bottom plate is connected, first stiffening plate respectively with first riser and bottom plate are perpendicular, the lower extreme both sides of second riser set up the second stiffening plate perpendicularly, the second stiffening plate with the bottom plate is connected perpendicularly, the upper end both sides of second riser set up the third stiffening plate perpendicularly, the upper end of third stiffening plate is smooth and with first riser and second riser upper end are located the coplanar.
Further, the planes of the third stiffening plate, the first vertical plate and the second vertical plate are parallel to the plane of the bottom plate.
Furthermore, the gap between the long hole and the connecting plate after being installed is smaller than 0.3 mm, so that the connecting plate plays a limiting role on the pressing plate.
Further, four limiting plates are arranged on the pressing plate, the limiting plates are arranged on two sides of the long hole in pairs, the limiting plates are parallel to the long axis of the long hole, the limiting plates are perpendicular to the pressing plate, and the limiting plates are arranged between the second mounting holes and edges corresponding to two sides of the long axis of the long hole in the pressing plate.
The connecting device is reasonable in structure, convenient to assemble and clear in force transmission, and can effectively avoid the problem that the connecting device cannot be disassembled after the foundation bolt is influenced by a tensile test while improving the efficiency, saving the investment and reducing the difficulty.
Drawings
FIG. 1 is a front view of a lower connector of the present invention;
FIG. 2 is a top view of the lower connector of the present invention;
FIG. 3 is a side view of the lower connector of the present invention;
FIG. 4 is a schematic view of the structure of the lower connector of the present invention;
FIG. 5 is a schematic view of a platen according to the present invention;
fig. 6 is a schematic structural view of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1 to 6 of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which are obtained by a person skilled in the art based on the described embodiments of the invention, fall within the scope of protection of the invention.
The first embodiment of the invention provides a tension-compression integrated connecting device for a power transmission line tower foundation strength test, which comprises an upper connecting body and a lower connecting body, wherein the lower connecting body comprises a base connected with foundation bolts of the tower foundation and a tension device, the upper connecting body comprises a pressing plate 10 connected with a bearing mechanism of a counter force device, the base comprises a bottom plate 8, a first mounting hole 9 connected with the foundation bolts is formed in the bottom plate 8, a supporting connecting mechanism is arranged on the bottom plate 8, the pressing plate 10 is arranged on the upper part of the supporting connecting mechanism, a second mounting hole 11 connected with the counter force device is arranged on the pressing plate 10, a long hole 12 is formed in the middle of the pressing plate 10 corresponding to the supporting connecting mechanism, and the top end of the supporting connecting mechanism passes through the long hole 12 on the pressing plate 10 and is connected with the tension device. The bottom plate is used as a supporting body of the whole device, the first mounting hole on the bottom plate is in charge of being connected with the foundation bolt, and the supporting and connecting mechanism on the bottom plate is connected with the tension device, so that the effect of transmitting tension is achieved, and the tensile test is realized. The clamp plate is installed on supporting coupling mechanism, and the second mounting hole of reservation is used for connecting the load-bearing mechanism of reaction device, bears the pressure that reaction device applyed the base to transmit the tower base of below with pressure to realize the test to the resistance to compression.
The base is an integral mechanism, the bottom plate 8 is square, the first mounting holes 9 are formed in four corners of the bottom plate 8, the first mounting holes 8 are round holes, the aperture and the position of the first mounting holes 8 are matched with foundation bolts of a tower foundation for strength test, and the first mounting holes on the bottom plate are conveniently connected with the foundation bolts, so that operation is convenient.
The support coupling mechanism includes first riser 3 and second riser 5 of welding setting on the bottom plate 8, first riser 3 and second riser 5 set up perpendicularly on the bottom plate 8, second riser 5 is two, first riser 3 is perpendicular with second riser 5, second riser 5 with the central line of first riser 3 is connected, second riser 5 sets up respectively the both sides of first riser 3, the front and back side of first riser 3 respectively with two limit connections of symmetry on the bottom plate 8, the outside of second riser 5 with two other limit connections on the bottom plate 8, the welding sets up triangle-shaped's connecting plate 2 in the middle of the top of first riser 3, connecting plate 2 with slot hole 12 on the clamp plate 10 cooperatees, slot hole 12 is rectangular structure, set up on the 2 with the connecting hole 1 that tension device is connected, first riser 3 and second riser 5 upper end just lie in same plane and the second riser 5 the same plane, the first riser 10 is held with the clamp plate is born to the weight of first riser 5. The slot hole on the pressing plate is used for penetrating the connecting plate, and the pressing plate is arranged at the upper ends of the first vertical plate and the second vertical plate after being installed, so that pressure can be transmitted to the base from the first vertical plate and the second vertical plate, and the pressing plate is very firm. And the connecting plate is matched with the long hole, so that the pressing plate can be limited, and accidents caused by dislocation and sliding of the pressing plate are avoided. The upper ends of the first vertical plate and the second vertical plate are smooth, the pressing plate is prevented from being inclined, the connection relation between the first vertical plate and the second vertical plate and the bottom plate can ensure the firmness of support, and the weight of the device can be effectively reduced while the maximum supportability is realized.
The lower extreme both sides of side about the first riser 3 set up first stiffening plate 7, first stiffening plate 7 with bottom plate 8 is connected, first stiffening plate 7 respectively with first riser 3 and bottom plate 8 are perpendicular, the lower extreme both sides of second riser 5 set up second stiffening plate 6 perpendicularly, second stiffening plate 6 with bottom plate 8 is connected perpendicularly, the upper end both sides of second riser 5 set up third stiffening plate 4 perpendicularly, the upper end of third stiffening plate 4 is smooth and with first riser 3 and second riser 5 upper end are located the coplanar. The first reinforcing plate and the second reinforcing plate increase the firmness of connection between the first vertical plate and the bottom plate and between the second vertical plate and the bottom plate, and the third reinforcing plate is matched with the upper ends of the first vertical plate and the second vertical plate, so that the supporting effect on the pressing plate is achieved.
The planes of the third stiffening plate 4, the first vertical plate 3 and the second vertical plate 5 are parallel to the plane of the bottom plate 8. The balance of the pressing plate can be ensured, and the failure of the compression test can be effectively avoided.
Example two
The difference between this embodiment and the first embodiment is that:
the gap between the long hole 12 and the connecting plate 2 is smaller than 0.3 mm after the long hole is installed, so that the connecting plate 2 plays a limiting role on the pressing plate 10. The clearance is smaller, and the limiting effect is better, and the stability of test is higher.
Four limiting plates 13 are arranged on the pressing plate 10, the limiting plates 13 are arranged on two sides of the long hole 12 in pairs, the limiting plates 13 are parallel to the long axis of the long hole 12, the limiting plates 13 are perpendicular to the pressing plate 10, and the limiting plates 13 are arranged between the second mounting holes 11 and edges corresponding to two sides of the long axis of the long hole 12 on the pressing plate 10. The limiting plate can limit the bearing mechanism of the counter force device, is matched with the long hole, has a better limiting effect, can bear larger lateral pressure, and has better balance control when compression resistance is realized.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (7)
1. A transmission line tower foundation strength test draws integrative connecting device of pressure, its characterized in that: the lower connector comprises a base connected with foundation bolts of a tower foundation and a tension device, the upper connector comprises a pressing plate connected with a bearing mechanism of a counterforce device, the base comprises a bottom plate, a first mounting hole connected with the foundation bolts is formed in the bottom plate, a supporting and connecting mechanism is arranged on the bottom plate, the pressing plate is arranged on the upper portion of the supporting and connecting mechanism, a second mounting hole connected with the counterforce device is formed in the pressing plate, a long hole is formed in the middle of the pressing plate corresponding to the supporting and connecting mechanism, and the top end of the supporting and connecting mechanism penetrates through the long hole in the pressing plate to be connected with the tension device;
the support connecting mechanism comprises a first vertical plate and a second vertical plate which are welded on the bottom plate, the first vertical plate and the second vertical plate are vertically arranged on the bottom plate, the first vertical plate is vertical to the second vertical plate, the second vertical plate is connected with the central line of the first vertical plate, a triangular connecting plate is welded in the middle of the top of the first vertical plate, the connecting plate is matched with a long hole on the pressing plate, the long hole is of a rectangular structure, and the connecting plate penetrates through the long hole; the connecting plate is provided with a connecting hole connected with the tension device, and the upper ends of the first vertical plate and the second vertical plate bear the pressure plate.
2. The tension-compression integrated connecting device for power transmission line tower foundation strength test as claimed in claim 1, wherein: the base is an integral mechanism, the bottom plate is square, the first mounting holes are formed in four corners of the bottom plate, the first mounting holes are round holes, and the aperture and the position of the first mounting holes are matched with foundation bolts of a tower foundation for strength test.
3. The tension-compression integrated connecting device for power transmission line tower foundation strength test as claimed in claim 2, wherein: the two second vertical plates are respectively arranged on two sides of the first vertical plate, the front side and the rear side of the first vertical plate are respectively connected with two symmetrical edges on the bottom plate, the outer side of the second vertical plate is connected with the other two edges on the bottom plate, and the upper ends of the first vertical plate and the second vertical plate are smooth and are positioned on the same plane; the top end of the connecting plate is arc-shaped.
4. A tension and compression integrated connection device for a transmission line tower foundation strength test as recited in claim 3, wherein: the lower extreme both sides of side set up first stiffening plate around the first riser, first stiffening plate with the bottom plate is connected, first stiffening plate respectively with first riser and bottom plate are perpendicular, the lower extreme both sides of second riser set up the second stiffening plate perpendicularly, the second stiffening plate with the bottom plate is connected perpendicularly, the upper end both sides of second riser set up the third stiffening plate perpendicularly, the upper end of third stiffening plate is smooth and with first riser and second riser upper end are located the coplanar.
5. The tension-compression integrated connecting device for the foundation strength test of the power transmission line pole and tower according to claim 4, wherein: the planes of the third stiffening plate, the first vertical plate and the second vertical plate are parallel to the plane of the bottom plate.
6. The tension-compression integrated connecting device for the foundation strength test of the power transmission line pole and tower according to claim 5, wherein: the gap between the long hole and the connecting plate is smaller than 0.3 mm after the long hole is installed, so that the connecting plate plays a limiting role on the pressing plate.
7. The tension-compression integrated connecting device for the foundation strength test of the power transmission line pole and tower as claimed in claim 6, wherein: four limiting plates are arranged on the pressing plate, the limiting plates are arranged on two sides of the long hole in pairs, the limiting plates are parallel to the long axis of the long hole, the limiting plates are perpendicular to the pressing plate, and the limiting plates are arranged between the second mounting holes and edges corresponding to two sides of the long axis of the long hole in the pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711242727.0A CN107700559B (en) | 2017-11-30 | 2017-11-30 | Tension-compression integrated connecting device for power transmission line tower foundation strength test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711242727.0A CN107700559B (en) | 2017-11-30 | 2017-11-30 | Tension-compression integrated connecting device for power transmission line tower foundation strength test |
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| Publication Number | Publication Date |
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| CN107700559A CN107700559A (en) | 2018-02-16 |
| CN107700559B true CN107700559B (en) | 2023-05-12 |
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| CN201711242727.0A Active CN107700559B (en) | 2017-11-30 | 2017-11-30 | Tension-compression integrated connecting device for power transmission line tower foundation strength test |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109030181A (en) * | 2018-08-28 | 2018-12-18 | 国网河南省电力公司西峡县供电公司 | A kind of electric power line pole tower intensity detecting device |
| CN109797773B (en) * | 2019-03-11 | 2023-08-18 | 浙江大学城市学院 | Assembled steel structure tower crane foundation bearing platform capable of freely adjusting angle and position |
| CN110014240B (en) * | 2019-04-29 | 2021-03-16 | 中电建武汉铁塔有限公司 | Welding process for tower foot of power transmission tower |
| CN110241869B (en) * | 2019-07-15 | 2023-12-01 | 重庆科技学院 | Device and method for testing dynamic load of foundation bearing capacity flat plate |
| CN110541430B (en) * | 2019-09-25 | 2024-06-14 | 国网福建省电力有限公司电力科学研究院 | Root-opening adjustable narrow-foundation tower steel structure foundation and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1048112A (en) * | 1996-08-02 | 1998-02-20 | Fujita Corp | Test of pull-out strength of anchor bolt for machinery |
| CN205242465U (en) * | 2015-12-22 | 2016-05-18 | 广东中科华大工程技术检测有限公司 | Simple and easy connecting device of vertical resistance to plucking static test of foundation pile |
| CN106908330B (en) * | 2017-03-10 | 2024-03-26 | 浙江华电器材检测研究院有限公司 | Single-direction and double-direction combined bending test device for composite cross arm |
| CN207512801U (en) * | 2017-11-30 | 2018-06-19 | 国家电网公司 | A kind of pulling and pressing integrated attachment device of pole and tower foundation strength test |
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