CN108051293B - Bus clamping structure in bus stretching amount detection device - Google Patents
Bus clamping structure in bus stretching amount detection device Download PDFInfo
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- CN108051293B CN108051293B CN201711445278.XA CN201711445278A CN108051293B CN 108051293 B CN108051293 B CN 108051293B CN 201711445278 A CN201711445278 A CN 201711445278A CN 108051293 B CN108051293 B CN 108051293B
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- bus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/22—Investigating strength properties of solid materials by application of mechanical stress by applying steady torsional forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention provides a bus clamping structure in a bus stretching amount detection device, wherein three buses are fixedly connected with a fixed seat, a round fixed disc is fixedly arranged on a supporting rod at the end part, a torsion spring capable of driving the rotary disc to rotate relative to a connecting shaft is arranged between the rotary disc and the connecting shaft, the rotary disc comprises two half bodies I, the torsion spring is arranged in a dodging groove, two ends of the torsion spring are respectively and fixedly connected with the connecting shaft and the inner wall of an installation hole, three positioning holes are further formed in the plate body I, the inner wall of each positioning hole is provided with an inwards concave groove, the grooves corresponding to the two half bodies I form a spherical annular groove, a hemispherical hinge block is further arranged in each positioning hole, two hinge heads can form a sphere matched with the annular groove, a through hole allowing the bus to pass through is formed in each hinge block, and the bus is fixedly connected with the hinge; the hinge block is connected in the ring groove in a sliding manner; the two half bodies are detachably connected through bolts. The invention has the advantages of fixing the bus and allowing the bus to rotate.
Description
Technical Field
The invention relates to a detection system of power grid equipment, in particular to a bus clamping structure in a bus stretching amount detection device.
Background
Tubular buses in operation of a transformer substation move due to expansion with heat and contraction with cold under the influence of different environments, different climates (such as high-temperature heat, rain and snow freezing), short-circuit faults of the buses in the near area and bus hardware faults, the tubular buses and the brackets generate friction, so that supporting porcelain bottles below the tubular buses are subjected to larger stress, the service life of the porcelain bottles is shortened, and even bus support porcelain bottle fracture accidents occur.
The thermal expansion and cold contraction of the bus lead to different lengths of the bus and lead to the bus being sunken or pulled excessively, so that the performance of the bus is influenced, the strength of the bus fixing device is also influenced, and under different environments, if the stretching amount of the bus cannot be monitored timely, the power transmission stability and safety of a transformer substation can be influenced, and great economic loss and potential safety hazards are caused.
Disclosure of Invention
The present invention is directed to a bus bar clamping structure in a bus bar stretching amount detecting device, which solves the above-mentioned problems of the prior art, and is to firmly clamp a bus bar and allow the bus bar to be twisted with respect to a connecting shaft so as to detect the stretching amount of the bus bar.
The purpose of the invention can be realized by the following technical scheme: a bus clamping structure in a bus stretching amount detection device is characterized in that the stretching amount detection device comprises two end supporting rods and a middle supporting rod, a fixed seat is fixedly arranged on the middle supporting rod, three buses are fixedly connected with the fixed seat, a circular fixed disk is fixedly arranged on the end supporting rod, a connecting shaft is fixedly arranged in the middle of the fixed disk, the connecting shaft is connected with a rotating disk, a torsion spring capable of driving the rotating disk to rotate relative to the connecting shaft is arranged between the rotating disk and the connecting shaft, the rotating disk comprises two half bodies I, a mounting hole is formed in the middle of each half body I, the connecting shaft is inserted into the mounting hole, a spiral avoiding groove is formed in the inner wall of the mounting hole, the torsion spring is arranged in the avoiding groove, two ends of the torsion spring are respectively fixedly connected with the connecting shaft and the inner wall of the mounting hole, and three positioning holes are further formed in the half bodies, the inner wall of the positioning hole is provided with an inwards concave groove, the grooves corresponding to the two half bodies form a spherical annular groove, a hemispherical hinge block is further arranged in the positioning hole, the two hinge joints can form a sphere matched with the annular groove, a through hole allowing a bus to pass through is formed in the hinge block, and the bus is fixedly connected with the hinge block; the hinge block is connected in the ring groove in a sliding manner; the two half bodies are detachably connected through bolts.
The straight line distance that the rolling disc need accomplish between the relative fixed disk is unchangeable, and can the relative fixed disk rotation, in order to prevent that the generating line from taking place wearing and tearing by the department of buckling, is provided with two articulated blocks, and two articulated blocks form a spheroid, can be at the annular internal rotation, and the generating line is fixed in the perforation on the spheroid.
The hinge block is characterized by further comprising a pressing sheet matched with the half body I, the pressing sheet is provided with a pressing portion matched with the through hole and a fixing portion matched with the inner side face of the hinge block, and the inner surface of the pressing portion is provided with inverted teeth inclined towards the fixing portion.
The two half bodies are installed from the two ends of the bus to the middle respectively, the inverted teeth are made to follow the installation direction, after the installation is completed, the inverted teeth have an anti-skidding effect on the bus, the inverted teeth on the two half bodies are opposite in direction, and the bus can be effectively prevented from moving.
The pressing part can buffer the space between the two half bodies, and the clamping force of the bus can be improved.
The connecting shaft is provided with two bearings, the inner ring of each bearing is sleeved and fixed on the connecting shaft, the outer ring of each bearing is provided with a plurality of bulges, and the side surface of the rotating disc is provided with a notch matched with the bulges.
The structure is convenient to disassemble and assemble, and can prevent the rotating disc from rotating relative to the connecting shaft on the premise of not influencing the rotation of the rotating disc.
The compressing pieces are made of rubber materials.
The fixing base is located the positive centre of two fixed disks, the rolling disc is located the positive centre of fixed disk and fixing base with it complex.
The connecting shaft is also fixedly connected with the fixed seat.
Support and fix the generating line through this structure, not only make the generating line no longer be in flagging state, and the pulling force that the generating line bore is balanced, make each parts life longer, entire system safe and reliable more.
Drawings
Fig. 1 is a schematic view of the overall structure of a bus bar stretching amount detecting system.
Fig. 2 is a schematic plan view of the rotary disk.
Fig. 3 is a sectional view of the rotating disk.
Fig. 4 is a schematic plan view of the fixing plate.
Fig. 5 is a sectional view of the fixed disk.
Fig. 6 is a partially enlarged view of a position a in fig. 4.
Fig. 7 is a partially enlarged view of a position B in fig. 5.
In the figure, a bus; 11. an end support bar; 12. a middle support bar; 21. a fixed seat; 22. fixing the disc; 23. a connecting shaft; 24. rotating the disc; 31. a laser transmitter; 32. a laser plate; 33. a laser receiver; 41. a first half body; 42. mounting holes; 43. an avoidance groove; 44. positioning holes; 45. a groove; 46. a ring groove; 47. a torsion spring; 48. a hinged block; 49. perforating; 5. a compression sheet; 51. a pressing part; 52. a fixed part; 53. chamfering; 54. a bearing; 55. a protrusion; 61. a second half body; 62. a jack; 63. a stepped bore; 64. and (6) rolling the sheets.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, the high-voltage distribution system includes three parallel buses a, the device includes two end support rods 11 and a middle support rod 12, a fixed seat 21 is fixedly disposed on the middle support rod, all three buses a are fixedly connected with the fixed seat 21, a circular fixed disk 22 is fixedly disposed on the end support rod 11, a connecting shaft 23 is fixedly disposed in the middle of the fixed disk 22, the connecting shaft 23 is connected with a rotating disk 24, a torsion spring 47 capable of driving the rotating disk 24 to rotate relative to the connecting shaft 23 is disposed between the rotating disk 24 and the connecting shaft 23, the buses a are fixedly connected with the fixed disk 22 and the rotating disk 24, three laser emitters 31 are uniformly disposed on the fixed disk 22, the generation paths of the laser emitters 31 are parallel to the connecting shaft 23, and laser receiving structures corresponding to the laser emitters 31 are disposed on the rotating disk 24; the rotating disc 24 is positioned on one side of the fixed disc 22 close to the fixed seat 21 of the bus bar a.
The torsion spring 47 drives the rotating disc 24 to rotate relative to the connecting shaft 23, so that the expansion amount of the bus bar a is still in a tensioned state in a twisting mode, of course, the expansion amount is very small, the interval between the bus bars a is not influenced, the laser transmitter 31 transmits laser and is received by the laser receiver 33, each laser receiver 33 corresponds to a relative torsion angle of the fixed disc 22 and the rotating disc 24, the angle can be obtained when a certain laser receiver 33 receives a laser signal, because the distance between the fixed disc and the rotating disc 24 is fixed, the length of the bus bar a at the moment can be calculated through the angle, and the difference between the length of the bus bar a at the moment and the length of the bus bar a in the initial state is the stretching amount of the bus bar a.
The stretching amount of the bus a is converted through the torsion angle of the rotating disc 24, on one hand, the stretching amount of the bus a can be detected, the stress mode of the bus a can be changed, the bus a bears relatively balanced stretching force, and the phenomenon that the pulling force of the bus a on the two sides of the 52-position fixing part changes along with the environmental change, so that the porcelain insulator is damaged due to uneven stress is avoided.
The fixed disk 22 can be further provided with a temperature and humidity sensor, a processing unit is arranged, signals received by the temperature and humidity sensor and signals received by the laser receiver 33 are transmitted to a control room on the ground in a wireless mode, and the control room is provided with a working condition machine for counting and analyzing all data and storing the data and monitoring and overhauling the condition of the bus a.
As shown in fig. 2, 3 and 6, the rotating disc 24 includes two half bodies 41, a mounting hole 42 is formed in the middle of each half body 41, the connecting shaft 23 is inserted into the mounting hole 42, a spiral avoiding groove 43 is formed in the inner wall of the mounting hole 42, a torsion spring 47 is arranged in the avoiding groove 43, two ends of the torsion spring 47 are fixedly connected with the connecting shaft 23 and the inner wall of the mounting hole 42 respectively, three positioning holes 44 are further formed in each half body 41, a concave groove 45 is formed in the inner wall of each positioning hole 44, a spherical annular groove 46 is formed in each groove 45 corresponding to each half body 41, a hemispherical hinge block 48 is further arranged in each positioning hole 44, each two hinge heads can form a sphere matched with the annular groove 46, a through hole 49 allowing the bus a to pass through is formed in each hinge block 48, and the bus a is fixedly connected with each hinge block 48; the hinge block 48 is slidably connected in the ring groove 46; the two half bodies 41 are detachably connected through bolts.
The rotating disk 24 needs to have a short linear distance with respect to the fixed disk 22 and can rotate with respect to the fixed disk 22, in order to prevent the bus bar a from being worn at the bent position, two hinge blocks 48 are provided, the two hinge blocks 48 form a sphere which can rotate in the ring groove 46, and the bus bar a is fixed in a through hole 49 on the sphere.
The hinge block further comprises a pressing sheet 5 matched with the half body I41, the pressing sheet 5 is provided with a pressing part 51 matched with the through hole 49 and a fixing part 52 matched with the inner side surface of the hinge block 48, and the inner surface of the pressing part 51 is provided with inverted teeth 53 inclined towards the fixing part 52.
The two half bodies 41 are respectively installed from the two ends to the middle of the bus a, the inverted teeth 53 are made to follow the installation direction, after the installation is completed, the inverted teeth 53 have an anti-skidding effect on the bus a, and the inverted teeth 53 on the two half bodies 41 are opposite in direction, so that the bus a can be effectively prevented from moving.
The pressing portion 51 can buffer between the two half bodies 41 and can increase the clamping force of the bus bar a.
The connecting shaft 23 is provided with two bearings 54, the inner ring of the bearing 54 is sleeved and fixed on the connecting shaft 23, the outer ring of the bearing 54 is provided with a plurality of bulges 55, and the side surface of the rotating disc 24 is provided with a notch matched with the bulges 55.
This structure is easy dismounting not only, can prevent that rolling disc 24 from rotating 23 relative even under the prerequisite that does not influence rolling disc 24 rotatory moreover.
The laser receiving structure comprises a laser plate 32 arranged on one side surface of the rotating disc 24 close to the fixed disc 22, a plurality of laser receivers 33 are arranged on the laser plate 32, and the distances between the laser receivers 33 and the axis of the rotating disc 24 are the same.
As shown in fig. 4, 5 and 7, the fixed disk includes two half bodies 61, the fixed disk near the rotating disk 24 is fixedly connected with the connecting shaft 23, the half bodies 61 are provided with insertion holes 62 corresponding to the three bus bars a, a stepped hole 63 with a diameter larger than that of the insertion hole 62 is arranged in the insertion hole 62, a rolling sheet 64 is arranged in the stepped hole 63, one end of the rolling sheet 64 is fixedly connected with the wall surface of the inner end of the stepped hole 63, the diameter of one end of the rolling sheet 64 fixedly connected with the wall surface of the stepped hole 63 is larger than that of the other end, and the rolling sheet 64 is unfolded to form a hollow conical column shape.
The bus a is fixed on the fixed disc 22, so that the requirement of firm positioning is met, and a certain amount of radial expansion and contraction are allowed, because the diameter of the bus a can slightly change when the environments such as temperature and the like change, in order to avoid stress concentration on a connecting piece for fixing the bus a, a winding sheet 64 is arranged in the insertion hole 62, the outer end of the winding sheet 64 can be automatically wound under the condition of no stress, when the bus a is inserted, the winding sheet 64 can be extruded to continue winding, an annular positioning sleeve is formed after the winding sheet is wound, the annular positioning sleeve can be tightly pressed with the bus a under the insertion of the bus a, the two half bodies 41 can be firmly fixed after being connected through bolts, the winding sheet 64 is wound to the number of turns required by the compression of the bus a, the buffer space is provided, the bus a is firmly fixed, and the bus a can be prevented from moving towards any direction.
The inner side surface and the outer side surface of the rolled sheet 64 have teeth that can engage with each other.
In order to prevent the slip between the bus bar a and the winding sheet 64, teeth are provided on both sides of the winding sheet 64, and after winding, the portions that are bonded to each other can be brought into a meshing state, so that the winding sheet 64 is not easily loosened.
The rolling sheet 64 is made of metal.
The pressing sheet 5 is made of rubber.
The fixed base 21 is located at the middle of the two fixed discs 22, and the rotating disc 24 is located at the middle of the fixed disc 22 and the fixed base 21 which are matched with the rotating disc.
The connecting shaft 23 is also fixedly connected with the fixed seat 21.
Support and fix bus a through this structure, not only make bus a no longer be in flagging state, and the pulling force that bus a bore is balanced, make each parts life longer, entire system safe and reliable more.
The detection method comprises the following steps: setting an initial state of a bus in a state that the bus is not twisted, assuming that the state that a light receiver positioned in the middle of a laser receiving disc receives a laser beam emitted by a laser emitter in the initial state is the initial state, recording the laser receiver receiving the laser beam emitted by the laser emitter in the initial state as an initial laser receiver, calculating and marking the inclination angle of the bus relative to the initial state when other laser receivers receive the laser beam emitted by the laser emitter, wherein the length of the bus in the initial state is the initial length; during detection, the laser transmitter is started, the inclination angle corresponding to the laser receiver which receives laser beams emitted by the laser transmitter is the bus twisting inclination angle in the state, the difference between the initial length of the bus and the length of the bus at the moment can be calculated through the distance between the fixed disc and the rotating disc and the inclination angle, and the difference is the bus stretching amount.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (6)
1. A bus clamping structure in a bus stretching amount detection device comprises two end supporting rods (11) and a middle supporting rod (12), wherein a fixed seat (21) is fixedly arranged on the middle supporting rod, and three buses (a) are fixedly connected with the fixed seat (21), and the bus clamping structure is characterized in that a round fixed disc (22) is fixedly arranged on the end supporting rod (11), a connecting shaft (23) is fixedly arranged in the middle of the fixed disc (22), the connecting shaft (23) is connected with a rotating disc (24), a torsion spring (47) capable of driving the rotating disc (24) to rotate relative to the connecting shaft (23) is arranged between the rotating disc (24) and the connecting shaft (23), the rotating disc (24) comprises two half bodies I (41), a mounting hole (42) is formed in the middle of each half body I (41), and the connecting shaft (23) is inserted into the mounting hole (42), the inner wall of the mounting hole (42) is provided with a spiral avoiding groove (43), the torsion spring (47) is arranged in the avoiding groove (43), two ends of the torsion spring (47) are fixedly connected with the inner walls of the connecting shaft (23) and the mounting hole (42) respectively, the first half body (41) is further provided with three positioning holes (44), the inner wall of each positioning hole (44) is provided with a concave groove (45), the grooves (45) corresponding to the first half bodies (41) form a spherical annular groove (46), a hemispherical hinge block (48) is further arranged in each positioning hole (44), the two hinge heads can form a sphere matched with the annular groove (46), the hinge block (48) is provided with a through hole (49) allowing a bus (a) to pass through, and the bus (a) is fixedly connected with the hinge block (48); the hinge block (48) is connected in the annular groove (46) in a sliding manner; the two half bodies (41) are detachably connected through bolts.
2. The bus bar clamping structure in the bus bar stretching amount detecting device according to claim 1, further comprising a pressing piece (5) engaged with the half body (41), wherein the pressing piece (5) has a pressing portion (51) fitted with the through hole (49) and a fixing portion (52) fitted with an inner side surface of the hinge block (48), and an inner surface of the pressing portion (51) has inverted teeth (53) inclined toward the fixing portion (52).
3. The bus bar clamping structure of the bus bar stretching amount detecting device according to claim 1, wherein the connecting shaft (23) is provided with two bearings (54), an inner ring of each bearing (54) is sleeved and fixed on the connecting shaft (23), a plurality of protrusions (55) are arranged on an outer ring of each bearing (54), and a side surface of the rotating disc (24) is provided with a notch matched with the protrusion (55).
4. The bus bar clamping structure of the bus bar stretching amount detecting device according to claim 2, wherein the pressing piece (5) is made of rubber.
5. The bus bar clamping structure of the bus bar stretching amount detecting device according to claim 1, wherein the fixed base (21) is located at the center between two fixed plates (22), and the rotating plate (24) is located at the center between the fixed plate (22) and the fixed base (21) which are matched with the rotating plate.
6. The bus bar clamping structure of the bus bar stretching amount detecting device according to claim 1, wherein the connecting shaft (23) is further fixedly connected with the fixed seat (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711445278.XA CN108051293B (en) | 2017-12-27 | 2017-12-27 | Bus clamping structure in bus stretching amount detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711445278.XA CN108051293B (en) | 2017-12-27 | 2017-12-27 | Bus clamping structure in bus stretching amount detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108051293A CN108051293A (en) | 2018-05-18 |
| CN108051293B true CN108051293B (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711445278.XA Active CN108051293B (en) | 2017-12-27 | 2017-12-27 | Bus clamping structure in bus stretching amount detection device |
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| CN (1) | CN108051293B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114665285B (en) * | 2022-02-22 | 2024-06-07 | 平高集团有限公司 | Valve tower connecting fitting for converter station |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011021922A (en) * | 2009-07-14 | 2011-02-03 | Shimadzu Corp | Extensometer |
| CN202305319U (en) * | 2011-09-13 | 2012-07-04 | 杭州荣力铸锻有限公司 | Clamp for tensile testing device |
| CN202793914U (en) * | 2012-07-24 | 2013-03-13 | 新兴铸管股份有限公司 | Miniature tensile fixture for performance testing |
| CN106525593B (en) * | 2016-12-29 | 2023-07-25 | 清华大学苏州汽车研究院（相城） | Equal biaxial stretching test device |
| CN206740514U (en) * | 2017-04-07 | 2017-12-12 | 海宁市金茂经编有限公司 | Cloth stretches detection cloth clamping device |
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| CN108051293A (en) | 2018-05-18 |
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Effective date of registration: 20191122 Address after: 510080 Dongfeng East Road, Dongfeng, Guangdong, Guangzhou, Zhejiang Province, No. 8 Applicant after: ELECTRIC POWER RESEARCH INSTITUTE, GUANGDONG POWER GRID CO., LTD. Address before: 314400 407, room 1, No. 16-1, Shi Dai Road, Haining Economic Development Zone, Haining, Jiaxing, Zhejiang Applicant before: HAINING WENSHUO TECHNOLOGY CONSULTING CO., LTD. |
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