CN110492423A - A kind of high-tension transmission line spanning block equipment - Google Patents
A kind of high-tension transmission line spanning block equipment Download PDFInfo
- Publication number
- CN110492423A CN110492423A CN201910592772.1A CN201910592772A CN110492423A CN 110492423 A CN110492423 A CN 110492423A CN 201910592772 A CN201910592772 A CN 201910592772A CN 110492423 A CN110492423 A CN 110492423A
- Authority
- CN
- China
- Prior art keywords
- block
- spring
- crossing frame
- plate
- connecting line
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/18—Devices affording mechanical protection in the event of breakage of a line or cable, e.g. net for catching broken lines
Abstract
The invention discloses a kind of high-tension transmission line spanning block equipment, its structure includes crossing frame I, block mechanism I, block mechanism II, crossing frame II, the side crossing frame I is equipped with block mechanism I, compared with prior art, the beneficial effects of the present invention are: the combination setting that the present invention passes through two identical block machines, block region is thrown the net by two to be put together, there are two supporting points, substantially increase the intensity of block, the generation for effectivelying prevent broken string to be caught, there is retractility based on spring, spring ring is with spring ring in equidistant increase or equidistant diminution when flexible, so as to quickly be adjusted to block length, it can adapt in the different blocks across spacing, meet different block length, block is high-efficient, the block time is short, help to improve Poling Construction progress.
Description
Technical field
The present invention relates to Power-line technology field, specifically a kind of high-tension transmission line spanning block equipment.
Background technique
It is frequently encountered in ultra-high-tension power transmission line work progress across residential building, bridge, highway, railway etc., is
Being normally carried out for transmission line construction just needs to carry out stringing block construction across these facilities.
Since block is not fixed across spacing, existing block device technique is again incomplete, cannot quickly adjust block
Length leads to block low efficiency so that block time and block length are also proportional, and the block time is long, and in addition block is a piece of
Formula, intensity is low, the phenomenon that broken string is caught easily occurs.
Summary of the invention
It is a primary object of the present invention to overcome the deficiencies of the prior art and provide a kind of high-tension transmission line spanning block to set
It is standby.
The present invention adopts the following technical scheme that realize: a kind of high-tension transmission line spanning block equipment, structure include
Crossing frame I, block mechanism I, block mechanism II, the side crossing frame II, the crossing frame I are equipped with block mechanism I, the block
Mechanism I and block mechanism II are to be oppositely arranged and the shape size of the two i.e. composed structure is identical, and the block mechanism II is mechanical
It is connected to crossing frame II；
The block mechanism II includes block group, insulation net, position-limiting cover, flexible group, reel releasing mechanism, in the block group
Insulation net is installed, block group two sides are connected with position-limiting cover, and the position-limiting cover is laid with the two and by flexible group connection
Together, the block group is respectively connected with reel releasing mechanism close to the side both ends of crossing frame, and the reel releasing mechanism is provided with two groups
And connect with crossing frame, the block group, flexible group are with crossing frame using mechanical connection.
As optimization, the block group includes connecting plate, retaining ring, spring I, connecting line I, mounting plate, connecting line II, bullet
Spring II, the connecting plate are connected by spring I, spring II with mounting plate, one end of the connecting line I through mounting plate,
Spring I is connect with connecting plate, and one end of the connecting line II is connected to mounting plate, the spring through mounting plate, spring II
I, it is provided with retaining ring on the spring ring of spring II, is connected to one by retaining ring, insulation net between the spring I and spring II
It rises, the mounting plate is connect with crossing frame II, and the connecting plate, mounting plate are also connect with position-limiting cover.
As optimization, the mounting plate includes through-hole, plate body, mounting base, shaft, and two end of plate body offers
Through-hole, the plate body are equipped with shaft between two parties, and the both ends of the shaft are respectively connected with mounting base, the mounting base be mechanically connected to across
More frame II, the plate body are connect with spring I, spring II, and the through-hole is gap-matched with connecting line, the plate body also with limit
Position cover connection.
As optimization, the position-limiting cover includes U-shaped inner cover, U-shaped outer cover, and the U-shaped inner cover is through U-shaped outer cover and two
Person is gap-matched, and the U-shaped inner cover is connected with connecting plate, and the U-shaped outer cover is connected to plate body, and the U-shaped outer cover is also
With flexible group of connection.
As optimization, described flexible group includes bottom plate, short hinge seat, hydraulic cylinder, long hinge seat, described hydraulic cylinder one end
Be connected with short hinge seat, the other end connects with long hinge seat, and the long hinge seat is connected to crossing frame II, the short hinge seat with
The bottom center of bottom plate connects, and the bottom plate is vertically connected at U-shaped outer cover.
As optimization, the reel releasing mechanism includes shock mount, micro machine, I-beam wheel, is installed on the shock mount
Have micro machine, be equipped on the output shaft of the micro machine therewith using the I-beam wheel that excessively cooperates, the I-beam wheel with connect
Line connection.
As optimization, the retaining ring on the spring I, spring II can be increased and decreased according to block length.
As optimization, the connecting line I, connecting line are high-intensitive soft rope, can be wirerope, Di Nima rope, industrial yarn
One of.
Beneficial effect
Carrying out length adjustment to block mechanism I, block mechanism II is the half across spacing, by the liquid for controlling hydraulic cylinder
Compression bar inside contracts, to be pulled down block mechanism II by bottom plate, so that block mechanism II rotates counterclockwise to water using shaft d as axis
Level state, block mechanism I biconditional operation, so that two insulation nets are combined into and throw the net；
The length of insulation net is specifically adjusted are as follows: driving micro machine running makes its output shaft drive I-beam wheel rotation, if I-shaped
Wheel rotates clockwise, then recycles connecting line II, connecting line II curls inward, so that connecting line II, connecting line II generate connecting plate
Pulling force, so that spring I, spring II, by pulling-down, U-shaped inner cover is inside contracted to U-shaped outer cover, when being based on spring-compressed, spring ring and bullet
Spring coil is reduced in equidistant, therefore retaining ring is also equidistantly reduced with retaining ring, and the twill and twill for the net that insulate also wait squares to reduce, thus the net that insulate
By pulling-down；
Otherwise similarly, it if I-beam wheel rotates counterclockwise, will be put outside connecting line II, connecting line II, thus connecting line II, company
Wiring II reduces to the pulling force for making spring I, spring II, and reduced pulling force will reset for spring I, spring II provides power, from
And connecting plate is extrapolated, U-shaped inner cover is overhanging to U-shaped outer cover, and when being based on spring elongation, spring ring and spring ring increase in equidistant
Greatly, therefore retaining ring also equidistantly increases with retaining ring, and the twill and twill for the net that insulate also wait squares to increase, so that the net that insulate is elongated, it is U-shaped interior
The setting of cover, U-shaped outer cover to spring I, spring II plays the role of limit, support, helps to extend spring I, spring II makes
Use the service life.
Compared with prior art, the beneficial effects of the present invention are the combinations that: the present invention passes through two identical block machines
Setting, block region is thrown the net by two to be put together, and there are two supporting points, substantially increases the intensity of block, effectively prevent breaking
The generation being caught, based on spring with retractility, spring ring and spring ring are reduced in equidistant increase or equidistantly when flexible, so as to
It is enough that block length is quickly adjusted, it can adapt to meet different block length, block in the different blocks across spacing
High-efficient, the block time is short, helps to improve Poling Construction progress.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is a kind of structural schematic diagram of high-tension transmission line spanning block equipment of the present invention.
Fig. 2 is the structural schematic diagram of the first working condition of Fig. 1.
Fig. 3 is the structural schematic diagram of second of working condition of Fig. 1.
Fig. 4 is overlooking structure diagram of the Tu1Zhong block mechanism II in conjunction with crossing frame II.
Fig. 5 is the overlooking structure diagram of block group of the invention.
Fig. 6 is the overlooking structure diagram of mounting plate of the invention.
Fig. 7 is that the left side of position-limiting cover of the invention regards topology view.
Fig. 8 is the overlooking structure diagram of reel releasing mechanism of the invention.
In figure, the corresponding relationship of component names and accompanying drawing number are as follows:
Crossing frame I-1, block mechanism I-2, block mechanism II-3, crossing frame II-4, block group -30, insulation net -31, limit
Position cover -32, flexible group -33, reel releasing mechanism -34, connecting plate -301, retaining ring -302, spring I-303, connecting line I-304, installation
It is plate -305, connecting line II-306, spring II-307, through-hole -305a, plate body -305b, mounting base -305c, shaft -305d, U-shaped
Inner cover -320, U-shaped outer cover -321, bottom plate -330, short hinge seat -331, hydraulic cylinder -332, long hinge seat -333, shock mount -
340, micro machine -341, I-beam wheel -342.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connected " " connects
Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine
Tool connection, is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For this field
For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Please refer to Fig. 1-8, the present invention provides a kind of high-tension transmission line spanning block equipment and technology scheme: its structure includes
Crossing frame I1, block mechanism I2, block mechanism II3, the side crossing frame II4, the crossing frame I1 are equipped with block mechanism I2, institute
Stating block mechanism I2 and block mechanism II3 is to be oppositely arranged and the shape size of the two i.e. composed structure is identical, the block machine
Structure II3 is mechanically connected to crossing frame II4；
The block mechanism II3 includes block group 30, insulation net 31, position-limiting cover 32, stretches and organize 33, reel releasing mechanism 34,
Insulation net 31 is installed, 30 two sides of block group are connected with position-limiting cover 32, and the position-limiting cover 32 is laid in the block group 30
There is the two and linked together by flexible group 33, the block group 30 is respectively connected with volume close to the side both ends of crossing frame II4
Laying mechanism 34, the reel releasing mechanism 34 are provided with two groups and connect with crossing frame II4, the block group 30, flexible group 33 with
Crossing frame II4 is using mechanical connection.
The block group 30 includes connecting plate 301, retaining ring 302, spring I303, connecting line I304, mounting plate 305, connects
Wiring II306, spring II307, the connecting plate 301 is connected by spring I303, spring II307 with mounting plate 305, described
One end of connecting line I304 is connect through mounting plate 305, spring I303 with connecting plate 301, one end of the connecting line II306
Be connected to mounting plate 305 through mounting plate 305, spring II307, the spring I303, spring II307 spring ring on be all provided with
It is equipped with retaining ring 302, is linked together between the spring I303 and spring II307 by retaining ring 302, insulation net 31, the peace
Loading board 305 is connect with crossing frame II4, and the connecting plate 301, mounting plate 305 are also connect with position-limiting cover 32, the spring I303 with
The combination of spring II307 is arranged, and based on spring with retractility, spring ring and spring ring are in equidistant increase or equidistant contracting when stretching
It is small, to carry out length adjustment to insulation net 31, it can satisfy different block length.
The mounting plate 305 includes through-hole 305a, plate body 305b, mounting base 305c, shaft 305d, the plate body 305b
Two ends offer through-hole 305a, and the plate body 305b is equipped with shaft 305d between two parties, and the both ends of the shaft 305d are all connected with
There are mounting base 305c, the mounting base 305c to be mechanically connected to crossing frame II4, the plate body 305b and spring I303, spring
II307 connection, the through-hole 305a and connecting line II306 are gap-matched, and the plate body 305b is also connect with position-limiting cover 32,
Block group 30 is mounted on crossing frame II-4 by being provided in for the mounting base 305c, helps to improve the installation of block group 30
Intensity.
The position-limiting cover 32 includes U-shaped inner cover 320, U-shaped outer cover 321, and the U-shaped inner cover 320 is through U-shaped outer cover
321 and the two be gap-matched, the U-shaped inner cover 320 is connected with connecting plate 301, and the U-shaped outer cover 321 is connected to plate
Body 305b, the U-shaped outer cover 321 are also connect with flexible group 33, and the setting of the position-limiting cover 32 is to spring I303, spring II307
Play the role of limit, support, facilitates the service life for extending spring I303, spring II307.
Described flexible group 33 includes bottom plate 330, short hinge seat 331, hydraulic cylinder 332, long hinge seat 333, described hydraulic
332 one end of cylinder is connected with short hinge seat 331, and the other end connects with long hinge seat 333, and the long hinge seat 333 is connected to leap
Frame II4, the short hinge seat 331 are connect with the bottom center of bottom plate 330, and the bottom plate 330 is vertically connected at U-shaped outer cover 321,
Described flexible group 33 of setting not only plays the role of support to block group 30, further increases the intensity of block group 30 and consolidates
Property, while block group 30 can also be made to be rotated with shaft 305d axis and carry out block.
The reel releasing mechanism 34 includes shock mount 340, micro machine 341, I-beam wheel 342, on the shock mount 340
Micro machine 341 is installed, is equipped on the output shaft of the micro machine 341 therewith using the I-beam wheel 342 excessively cooperated, it is described
I-beam wheel 342 is connect with connecting line, and being provided in for the reel releasing mechanism 34 carries out length adjustment to block group 30, to make to seal
Net group 30 can adapt in the different blocks across spacing.
Retaining ring 302 on the spring I303, spring II307 can be increased and decreased according to block length, can adapt in not
Same block length.
The connecting line I-304, connecting line II-306 are high-intensitive soft rope, can be wirerope, Di Nima rope, industrial yarn
One of, intensity is high, the phenomenon that avoiding the occurrence of broken string generation.
The working principle of the invention: carrying out length adjustment to block mechanism I2, block mechanism II is the half across spacing,
Hydraulic stem by controlling hydraulic cylinder 332 inside contracts, to be pulled down block mechanism II3 by bottom plate 330, so that block mechanism II
Horizontality, block mechanism I2 biconditional operation are rotated counterclockwise to by axis of shaft 305d, so that two insulation nets 31 are combined into one
Net, so as to meet the different blocks across spacing；
The length of insulation net is specifically adjusted are as follows: and driving micro machine 341 operates, and makes its output shaft that I-beam wheel 342 be driven to rotate,
If I-beam wheel 342 rotates clockwise, connecting line II306, connecting line II306 curls inward are recycled, thus connecting line II306, company
Wiring II306 generates pulling force to connecting plate 301, so that spring I303, spring II307 be by pulling-down, U-shaped inner cover 320 is to U-shaped outer cover
321 inside contract, and when being based on spring-compressed, spring ring and spring ring are reduced in equidistant, therefore the also equidistant contracting of retaining ring 302 and retaining ring 302
Small, the twill and twill for the net that insulate also wait squares to reduce, so that the net 31 that insulate is by pulling-down；
Otherwise similarly, it if I-beam wheel 342 rotates counterclockwise, will be put outside connecting line II306, connecting line II306, thus even
Wiring II306, connecting line II306 reduce to the pulling force for making spring I303, spring II307, reduced pulling force be spring I303,
Spring II307 will reset offer power, so that connecting plate 301 be extrapolated, U-shaped inner cover 320 is overhanging to U-shaped outer cover 321, be based on bullet
When spring stretches, spring ring and spring ring are in equidistant increase, therefore the also equidistant increase of retaining ring 302 and retaining ring 302, the twill for the net that insulate
Increase with twill also equal squares, so that the net 31 that insulate is elongated, the setting of U-shaped inner cover 320, U-shaped outer cover 321 is to spring I303, bullet
Spring II307 plays the role of limit, support, facilitates the service life for extending spring I303, spring II307.
In conclusion the technological progress that the present invention obtains compared with the prior art is: the present invention passes through two identical blocks
The combination of machine is arranged, and block region is thrown the net by two to be put together, and there are two supporting points, substantially increases the intensity of block, effectively
The generation for preventing broken string to be caught, based on spring with retractility, spring ring and spring ring are in equidistant increase or equidistant contracting when stretching
It is small, so as to quickly adjust block length, can adapt to meet different blocks in the different blocks across spacing
Length, block is high-efficient, and the block time is short, helps to improve Poling Construction progress.
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art,
It is still possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is carried out etc.
With replacement, all within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (3)
1. a kind of high-tension transmission line spanning block equipment, structure includes crossing frame I (1), block mechanism I (2), block mechanism
II (3), crossing frame II (4), it is characterised in that: the crossing frame I (1) is equipped with block mechanism I (2), and the crossing frame II (4) is even
It is connected to block mechanism II (3).
2. a kind of high-tension transmission line spanning block equipment according to claim 1, it is characterised in that: the block mechanism
II (3) includes block group (30), insulation net (31), position-limiting cover (32), flexible group (33), reel releasing mechanism (34), the block
Group (30) is equipped with insulation net (31) between two parties, and two sides are connected with the position-limiting cover (32) to connect with flexible group (33), the block group
(30) side is connected with (34) two groups of reel releasing mechanism, the reel releasing mechanism (34), block group (30), flexible group (33) with leap
Frame II (4) connection, the block group (30) include connecting plate (301), retaining ring (302), spring I (303), connecting line I
(304), mounting plate (305), connecting line II (306), spring II (307), the connecting plate (301) pass through spring I (303), bullet
Spring II (307) is connected with mounting plate (305), between the spring I (303) and spring II (307) by retaining ring (302), absolutely
Hoddy (31) connection, the connecting line I (304), connecting line II (306) one end connect with connecting plate (301), the installation
Plate (305) is connected with crossing frame II (4), and the connecting plate (301), mounting plate (305) connect with position-limiting cover (32).
3. a kind of high-tension transmission line spanning block equipment according to claim 2, it is characterised in that: the mounting plate
It (305) include through-hole (305a), plate body (305b), mounting base (305c), shaft (305d), plate body (305b) both ends are set
There is through-hole (305a), is equipped with shaft (305d) between two parties, shaft (305d) both ends are respectively connected with mounting base (305c), the peace
Dress seat (305c) is connected to crossing frame II (4), the plate body (305b) and spring I (303), spring II (307), position-limiting cover (32)
Connection, the through-hole (305a) and connecting line II (306) cooperate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910592772.1A CN110492423A (en) | 2019-07-03 | 2019-07-03 | A kind of high-tension transmission line spanning block equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910592772.1A CN110492423A (en) | 2019-07-03 | 2019-07-03 | A kind of high-tension transmission line spanning block equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110492423A true CN110492423A (en) | 2019-11-22 |
Family
ID=68546476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910592772.1A Pending CN110492423A (en) | 2019-07-03 | 2019-07-03 | A kind of high-tension transmission line spanning block equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110492423A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912025A (en) * | 2019-12-11 | 2020-03-24 | 国网北京市电力公司 | Net sealing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2412301Y (en) * | 2000-01-19 | 2000-12-27 | 国营群峰机械厂 | Four-column bridge live-wire work crossing rack |
| CN203707676U (en) * | 2014-02-24 | 2014-07-09 | 国网重庆云阳县供电有限责任公司 | Isolation net for replacement of high voltage iron tower lightning wire or composite ground wire |
| CN105529648A (en) * | 2016-01-18 | 2016-04-27 | 国家电网公司 | Hydraulic fabricated crossing structure |
| CN107394678A (en) * | 2017-06-27 | 2017-11-24 | 国家电网公司 | A kind of telescopic arm block crossing frame |
| CN207409922U (en) * | 2017-10-27 | 2018-05-25 | 宁波市电力设计院有限公司 | A kind of power circuit crossing frame block structure |
| CN108767735A (en) * | 2018-06-01 | 2018-11-06 | 中国电力科学研究院有限公司 | A kind of crossing frame and its installation method |
| CN109494621A (en) * | 2018-12-29 | 2019-03-19 | 国家电网有限公司 | Transmission line of electricity block device |
-
2019
- 2019-07-03 CN CN201910592772.1A patent/CN110492423A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2412301Y (en) * | 2000-01-19 | 2000-12-27 | 国营群峰机械厂 | Four-column bridge live-wire work crossing rack |
| CN203707676U (en) * | 2014-02-24 | 2014-07-09 | 国网重庆云阳县供电有限责任公司 | Isolation net for replacement of high voltage iron tower lightning wire or composite ground wire |
| CN105529648A (en) * | 2016-01-18 | 2016-04-27 | 国家电网公司 | Hydraulic fabricated crossing structure |
| CN107394678A (en) * | 2017-06-27 | 2017-11-24 | 国家电网公司 | A kind of telescopic arm block crossing frame |
| CN207409922U (en) * | 2017-10-27 | 2018-05-25 | 宁波市电力设计院有限公司 | A kind of power circuit crossing frame block structure |
| CN108767735A (en) * | 2018-06-01 | 2018-11-06 | 中国电力科学研究院有限公司 | A kind of crossing frame and its installation method |
| CN109494621A (en) * | 2018-12-29 | 2019-03-19 | 国家电网有限公司 | Transmission line of electricity block device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912025A (en) * | 2019-12-11 | 2020-03-24 | 国网北京市电力公司 | Net sealing device |
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Application publication date: 20191122 |
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