CN106968590A - Sleeve pipe overhauls special step ladder - Google Patents
Sleeve pipe overhauls special step ladder Download PDFInfo
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- CN106968590A CN106968590A CN201710149618.8A CN201710149618A CN106968590A CN 106968590 A CN106968590 A CN 106968590A CN 201710149618 A CN201710149618 A CN 201710149618A CN 106968590 A CN106968590 A CN 106968590A
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- Prior art keywords
- staircase
- sleeve pipe
- frame
- angle
- contact part
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Classifications
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C1/00—Ladders in general
- E06C1/02—Ladders in general with rigid longitudinal member or members
- E06C1/04—Ladders for resting against objects, e.g. walls poles, trees
- E06C1/06—Ladders for resting against objects, e.g. walls poles, trees in one piece
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/42—Ladder feet; Supports therefor
Abstract
Sleeve pipe overhauls special step ladder, is related to a kind of step ladder.At present, operation means of ascending a height are unable to compromise between security, convenience and economy.The present invention including staircase, located at staircase top can with sleeve pipe match Soft contact part, located at staircase bottom be used for increase staircase ascend a height angle angle increase device；Angle increase device, which includes angle, to be increased frame, increases the support feet of frame bottom located at angle, increases the soft part of frame side located at angle, angle increase frame side is the staircase connecting side being connected with staircase bottom, on angle increase frame is sleeve pipe matching side with staircase connecting side opposite side, sleeve pipe matching side is provided with soft part, and the lateral surface of soft part is the arc concave surface that can match with sleeve pipe.The technical program has set Soft contact part on top, it is to avoid sleeve pipe porcelain vase of damaging, and sets up angle increase device, increase staircase and sleeve angle, improve the stability of staircase, reduce rollover and after the possibility turned over, compromise between security, convenience and economy.
Description
Technical field
The present invention relates to a kind of step ladder, especially finger sleeve overhauls special step ladder.
Background technology
In checking experiment maintenance process is carried out to 500kV main transformer of transformer substation medium-tension bushing and 220kVGIS sleeve pipes,
It is frequently necessary to carry out dismantling operation to its binding post.Bushing shell for transformer structure is as shown in figure 5, due to bushing shell for transformer and rise
The height sum of seat has reached 3.5 meters, it is necessary to carry out operation of ascending a height.Existing operation means of ascending a height mainly have：
1st, using high-altitude operation vehicle.High-altitude operation vehicle is safe and reliable using flexible.But have a disadvantage in that needing establishment complicated
Programme of work, organiztion measure, technical measures, it is desirable to have work high above the ground card and loop wheel machine commander witness person are guarded, and go out car cost
And cost of human resources is huge, time-consuming for the course of work, efficiency is low.And 500kV main transformers are made by territory restriction, often high-altitude
Industry car can not be opened to main transformer 220kV sides, and stopping can not be close to 220kV bushing shell for transformer to 500kV sides arm.
2nd, using hoistable platform.Lifting platform safety is reliable, can effectively protect the personal safety of operating personnel.But,
Hoistable platform is heavy in itself, and hand haulage is more heavy, transports increasingly difficult when meadow, it is arrived specified location simultaneously
It is not easy, can only be vertically moved after fixed position, it is impossible to move horizontally；Moreover, it requires very high to ground, it is many in transformer station
It is cobblestone, lawn, is generally difficult to meet its requirement.
3rd, using common staircase.Common staircase uses and carries all more convenient, is at present in 500kV transforming plant main transformer pressures
Device medium-tension bushing and 220kVGIS sleeve pipes carry out applying more widely to ascend a height means on upkeep operation, but exist following several
Individual outstanding problem：
（1）Common staircase does not have secure support point and fixing point, easily slides, therefore operation of ascending a height is dangerous, there is certain peace
Full hidden danger；
（2）Common staircase needs special messenger's palm to help during up and down, and special messenger is also needed to after the completion of ascending a height and carries out colligation, process is multiple
Miscellaneous, labor intensive extends the activity duration；
（3）Because common staircase material is harder, because stress surface is concentrated on cross-arm when riding on sleeve pipe, easily porcelain vase is caused
Damage；
（4）For the sleeve pipe of main transformer 220kV sides, due to sleeve pipe it is higher, it is necessary to common staircase it is also longer, further increase
Unsafe factor during ascending a height, and carry also inconvenient.
4th, scaffold is set up.For 500kV transformer stations, it is the safe method of a comparison to set up scaffold, erects and
It is easy to use afterwards.But it is various to set up scaffold process itself, wastes time and energy, and scaffolding needs specialised vehicles to transport
Send, it is excessive for paying for construction operation.
In summary, above-mentioned several existing operation means of ascending a height respectively have its advantage and disadvantage：High-altitude operation vehicle, hoistable platform and
The security for setting up scaffold is higher, but very inconvenient, also very uneconomical；Common staircase is easy to use, economy, but
It is the presence of very big potential safety hazard.
The content of the invention
The technical problem to be solved in the present invention and propose technical assignment be prior art to be improved with being improved,
Sleeve pipe is provided and overhauls special step ladder, with up to the purpose for taking into account convenience, security, economy.Therefore, the present invention takes following
Technical scheme.
Sleeve pipe overhauls special step ladder, it is characterised in that：Including staircase, located at staircase top can with sleeve pipe match it is soft
Matter contact, located at staircase bottom be used for increase staircase ascend a height angle angle increase device；Described angle increase device
Increase frame including angle, increase the support feet of frame bottom located at angle, increase the soft part of frame side, described angle located at angle
Degree increase frame side is the staircase connecting side being connected with staircase bottom, and it is set with staircase connecting side opposite side that angle, which increases on frame,
Pipe matching side, described sleeve pipe matching side is provided with described soft part, and the lateral surface of soft part is the arc that can match with sleeve pipe
Inner concave.The technical program has set Soft contact part on top, with the sleeve pipe porcelain vase that avoids damaging, while setting up angle increase dress
Put, can increase staircase and sleeve angle, improve the stability of staircase, reduce rollover and after the possibility turned over, the reduction palm helps people
The stable degree of difficulty of member's maintenance staircase, compromise between security, convenience and economy.
As further improving and supplementing to above-mentioned technical proposal, present invention additionally comprises following additional technical feature.
The width of described angle increase frame is W, and the width of angle increase frame matches with staircase width, wherein 350 mm<
W<450mm, the distance of support feet to staircase connecting side is L1, and the length of angle increase frame is L, wherein 250 mm<L<350mm；
150 mm <L1<250mm。
Further, described Soft contact part is connected to staircase top by Soft contact part frame.
Further, described Soft contact part frame includes two connecting rods that left and right is arranged side by side, described Soft contact
Part is crossed in two connecting rods.
Further, the spacing of two connecting rods is S, and the length of connecting rod is L2, wherein 350 mm<S<450mm；150
mm <L2<250mm。
Further, described Soft contact part is soft cloth；Described connecting rod is rigid rod, and described is soft
Contact frame also includes bottom bar, cross bar；Connecting rod is in " [" shape, the end vertical of connecting rod forms side frame, side frame on bottom bar
Between provided with cross bar and formed accommodate Soft contact part deformation deformation space；Described side frame is connected with staircase；Described is soft
Cross-arm is provided with the elastic component with Soft contact part homonymy at the top of staircase above matter contact frame.It is in the middle part of Soft contact part frame
Empty, it is to avoid hard thing damage porcelain vase, when in use, Soft contact part and porcelain vase adhered shape increase the contact area with porcelain vase, entered
One step reduces the damage to damaging porcelain vase, and Soft contact part can also increase frictional force with porcelain vase adhered shape, reduces staircase and slips
Possibility, improve security.
Further, there is angle theta, wherein 5 ° between described connecting rod and staircase<θ<30°.Be conducive to improving soft
The compactness of contact and porcelain vase.
Further, the top and middle part of described staircase be equipped with staircase can be bundled it is telescopic solid on thing to ascending a height
Determine band, described fixing band is connected by tranverse connecting rod with staircase.Staircase is bundled on sleeve pipe by telescopic fixing band, it is to avoid sliding
Open, it is hand steered to prevent from toppling over without other staff after telescopic fixing band is bundled on sleeve pipe.Reduce labor cost.
Further, described staircase is telescopic staircase, and the fixing band of its middle and upper part is located at apart from staircase top
500mm-700mm cross-arm position, the fixing band at middle part is located at distance insulation staircase bottom 9000mm-11000 mm cross-arms position
Put.
Further, Soft contact part sets up the angular adjustment having for adjusting angle between Soft contact part frame and staircase
Device.Be conducive to improving the compactness of Soft contact part and porcelain vase, staircase is adapted to different height, received while being also convenient for folding
Receive.
Beneficial effect：
（1）The technical program is simple and practical, safety coefficient is high, reduces the activity duration of ascending a height, when shortening the duration, reducing power failure
Between, ensure power supply reliability in terms of play positive role.
（2）Compared with common staircase, the security of the escalator dedicated of ascending a height after improvement improves a lot, it is to avoid
The behavior of safety code is violated when common staircase is used on 500kV transformer medium voltage side sleeve pipes, can solve commonly to help well
Terraced bottom is easily slided, testing crew easily slips when cat ladder is ascended a height, top is too hard easily causes to damage to sleeve pipe porcelain vase
Bad the problems such as, prevent potential safety hazard, it is significant for reducing personal injury and device damage.
（3）Compared with high-altitude operation vehicle, hoistable platform, the escalator dedicated of ascending a height after improvement is in the absence of big machinery energy consumption mistake
Big the problem of, there is positive effect for energy-saving and emission-reduction, environmental protection.
Brief description of the drawings
Fig. 1 is the first structural representation of the present invention.
Fig. 2 is second of structural representation of the present invention.
Fig. 3 is use state schematic diagram of the present invention.
Fig. 4 is force analysis figure of the present invention.
Fig. 5 is bushing shell for transformer structural representation.
In figure：1- staircases；The soft cross-arms of 2-；201- Soft contact parts；202- Soft contact part framves；3- angles increase dress
Put；301- angles increase frame；302- support feets；The soft parts of 303-；4- fixing bands；5- sleeve pipes；6- raises seat.
Embodiment
Technical scheme is described in further detail below in conjunction with Figure of description.
First, embodiment one：
As shown in figure 1, sleeve pipe overhauls special step ladder, including staircase 1, located at the top of staircase 1 can match with sleeve pipe 5 it is soft
Contact 201, located at the bottom of staircase 1 be used for increase staircase 1 ascend a height angle angle increase device 3；Described angle increase
Device 3, which includes angle, to be increased frame 301, increases the support feet 302 of the bottom of frame 301 located at angle, located at angle increase frame 301 side
Soft part 303, described angle increase frame 301 side is the connecting side of staircase 1 be connected with the bottom of staircase 1, and angle increases frame
On 301 is the matching side of sleeve pipe 5 with the connecting side opposite side of staircase 1, and the described matching side of sleeve pipe 5 is provided with described soft part 303,
The lateral surface of soft part 303 is the arc concave surface that can match with sleeve pipe 5.The technical program has set Soft contact part on top
201, with the porcelain vase of sleeve pipe 5 that avoids damaging, while setting up angle increase device 3, staircase 1 and the angle of sleeve pipe 5 can be increased, raising is helped
The stability of ladder 1, reduce rollover and after the possibility turned over, the reduction palm helps personnel to maintain the stable degree of difficulty of staircase 1.Angle increases
Plus the soft part 303 of the side of frame 301 can avoid sleeve pipe 5 of damaging, and arc concave surface can match with sleeve pipe 5, formed and avoid space,
It is convenient to place, while also can be because local force is excessive and damages sleeve pipe 5.
In order that angle increase frame 301 has functional reliability, the width of described angle increase frame 301 is W, and angle increases
Plus the width of frame 301 matches with the width of staircase 1, wherein 350 mm<W<450mm, the distance of support feet 302 to the connecting side of staircase 1
For L1, the length of angle increase frame 301 is L, wherein 250 mm<L<350mm；150 mm <L1<250mm.
The connection of Soft contact part 201 for convenience, while reducing the improvement cost of staircase 1, described Soft contact part
201 are connected to the top of staircase 1 by Soft contact part frame 202, install the Soft contact with Soft contact part 201 additional on staircase 1
Part frame 202, easy to process, the connection of Soft contact part frame 202 and staircase 1 can be detachable or fixed.
To reduce weight and convenient connection, described Soft contact part frame 202 includes two connecting rods that left and right is arranged side by side,
Described Soft contact part 201 is crossed in two connecting rods.
Make Soft contact part 201 and enough contacts area that has by bar, the spacing of two connecting rods is S, connecting rod
Length be L2, wherein 350 mm<S<450mm；150 mm <L2<250mm.150 mm <L2<250mm makes it have enough
Contact area.
To improve the compactness with relying on bar, described Soft contact part 201 is soft cloth；Described connecting rod is
Rigid rod, described Soft contact part frame 202 also includes bottom bar, cross bar；Connecting rod is in " [" shape, the end vertical of connecting rod is set
In forming between side frame, side frame deformation space that the deformation of Soft contact part 201 is accommodated provided with cross bar and being formed on bottom bar；Described
Side frame is connected with staircase 1；The top cross-arm of staircase 1 of the described top of Soft contact part frame 202 is provided with and Soft contact part 201
The elastic component of homonymy.The middle part of Soft contact part frame 202 is sky, it is to avoid hard thing damage porcelain vase, when in use, Soft contact part 201
With porcelain vase adhered shape, increase and the contact area of porcelain vase further reduce the damage to damaging porcelain vase, Soft contact part 201
It can also increase frictional force with porcelain vase adhered shape, reduce the possibility that staircase 1 slips, improve security.
The compactness of Soft contact part 201 and porcelain vase is improved, there is angle theta between described connecting rod and staircase 1, wherein
5°<θ<30°.Connecting rod and the angle theta of staircase 1 are conducive to improving the compactness of Soft contact part 201 and porcelain vase.
To make staircase 1 be adapted to different height, Soft contact part frame 202 be provided be used to adjusting Soft contact part frame 202 with
The angle regulator of angle between staircase 1.Be conducive to improving the compactness of Soft contact part 201 and porcelain vase, adapt to staircase 1
Different height, while being also convenient for folding storage.
2nd, embodiment two：
It is not repeated that difference is with the something in common of embodiment one：To improve the security of work, described staircase 1
Top and middle part, which are equipped with, can bundle staircase 1 to the telescopic fixing band 4 ascended a height on thing, and described fixing band 4 passes through horizontal company
Bar is connected with staircase 1.Staircase 1 is bundled on sleeve pipe 5 by telescopic fixing band 4, it is to avoid sliped off, and is tied in telescopic fixing band 4
It is hand steered to prevent from toppling over without other staff after on sleeve pipe 5, reduce labor cost.
To improve the installation strength of fixing band 4, while not influenceing normally to use, described staircase 1 is helped to be telescopic
Ladder 1, the fixing band 4 of its middle and upper part is located at apart from the top 500mm-700mm of staircase 1 cross-arm position, and the fixing band 4 at middle part is located at
Distance insulation staircase 1 bottom 9000mm-11000 mm cross-arms position, fixing band 4 and the connection of staircase 1, fixing band 4 by through
Tranverse connecting rod connection in cross-arm, is conducive to improving the reliability connected.
3rd, it is following that partial devices are carried out with specific design and the explanation of implementation：
1st, Soft contact part 201
（11）Make：
The material of Soft contact part 201 selection 4mm sailcloth, 2mm thickness 20mm × 20mm hollow square steels, diameter 10mm steel pipes are square
Canvas machined according to design drawing after, doubling is through at the connecting rod of Soft contact part frame 202, fixed using rivet.It is soft
Contact frame 202 is connected to form soft cross-arm 2 with Soft contact part 201.
（12）Assembling
During assembling, soft cross-arm 2 is installed in staircase 1 and pushed up between cross-arm and secondary top cross-arm so that is connect during ascending a height with porcelain vase
Tactile part is soft contact band.
（13）Validity check
Staircase 1 after assembling is ridden over validity check is carried out on actual sleeve pipe 5, soft cross-arm has carried out good bag to porcelain vase
Wrap up in.4cm can be reached according to range estimation contact area S2More than.As shown in figure 4,
Under 300kg Action of Gravity Field, i.e., under 3000N active force, contact surface stress is：
F1=G•sinθ
It bears pressure：
P=F1/S
0-30 ° of angle, 300kg load-bearing scopes, the performance test results are as shown in table 8-1.As a result show, using it is soft contact band with
Porcelain vase surface parcel is good, and 1% or so that pressure is specified bearing value is born on porcelain vase surface, effectively ensures not to be damaged.
Through examining, designed soft contact band complies fully with requirement, and all measures 100% of countermeasure 1 are completed, the mesh of countermeasure 1
Mark 100% reaches.
Bear pressure actual measurement in table 8-1 porcelain vases surface
Tabulator：Coroner covers the tabulation time：2016.8
2：Angle increases frame 301
（21）Processing and fabricating
Material selection 2mm thickness 20mm × 20mm hollow square steels, diameter 12mm round steel, thickness 5mm diameter 40mm round plates, insulation rubber
Glue, and other fixing fittings.Repetition test simultaneously adjusts support feet 302 and is connected spot size with staircase 1 so that in 220kV sleeve pipes 5
Above in use, making sleeve pipe 5 be doubled with the angle of staircase 1.In order to prevent increase frame from causing damage to contact porcelain vase face, angle is made
Degree increase frame 301 and the soft part 303 of porcelain vase contact portion, soft part 303 is soft arc rubber blanket so that contact is good.
（22）Assembling
Angle increase frame 301 is fixed on insulation staircase 1 bottom using 12 80mm × 8mm fixing bolt.
（23）Validity check
The later staircase 1 of angle of assembling increase frame 301 is ridden over 500kV transformer medium voltage sides sleeve pipe 5 and raises progress on seat 6 by simulation
Validity check, as shown in Figure 3.It can be seen that, rise the confined space of seat 6 in, pass through angle increase frame 301, it is possible to increase porcelain vase with
Angle between insulation staircase 1.
Angle increases the performance test results of frame 301 as shown in table 8-2.As a result show, angle increase frame 301 can make staircase 1
Angle is doubled between porcelain vase.
Through examining, designed angle increase frame 301 complies fully with requirement, and all measures 100% of countermeasure 2 are completed, countermeasure
2 targets 100% reach.
Table 8-2 angles increase the measure of merit of frame 301
Tabulator：Chen Shaohui tabulates the time：2016.9
3rd, telescopic fixing band 4
（31）Prepare telescopic fixing band 4, U-shaped ring, be improved to purchasing telescopic fixing band 4, pass through tranverse connecting rod and insulation
Staircase 1 is fixed.
（32）Design and assembly
To meet stability requirement, it is considered to which insulate the stressing conditions of staircase 1 in use, from insulation staircase 1 top
600mm and from insulation the bottom 1000mm of staircase 1 place install telescopic fixing band 4 respectively, can effectively improve insulate staircase 1 stabilization
Property, and two telescopic uniform forces of fixing band 4.
（33）Validity check
The performance test results of telescopic fixing band 4 of design are as shown in table 8-3.As a result show, telescopic fixing band 4 is greatly improved
The anti-sideslip of staircase 1 and after turn over ability.
Through examining, designed telescopic fixing band 4 complies fully with requirement, and all measures 100% of countermeasure 3 are completed, countermeasure
3 targets 100% reach.
The telescopic the performance test results of fixing band 4 of table 8-3
4th, effect inspection
1. whole structure inspection
The many tasks carried out with reference to teams and groups on 500kV transformers medium-tension bushing 5, have been counted using improved staircase 1 of ascending a height
Ascend a height the situation of operation and the time used of ascending a height includes setting up staircase 1 and removes staircase 1, as a result statistics such as table 9-1
It is shown.
Table 9-1 ascends a height handling situations statistical form
Tabulator：Chen Zhipeng tabulates the time：2016.11
Statistical result shows, using the escalator dedicated 1 of ascending a height after improvement, can smoothly complete operation of ascending a height, and to the person and set
It is standby not result in any damage, more than other manner more safe and convenient.In addition, using the escalator dedicated 1 of ascending a height after improvement,
The time ascend a height less than other manner：The time used is ascended a height between 8min-9min in outdoor, and the time used is ascended a height in 13min- in interior
Between 14min, averagely ascend a height the time only 12min used.
By the inspection of field test several times, the escalator dedicated 1100% of ascending a height after improvement realizes following target：
（1）The possibility for occurring security incident is reduced to 0.
（2）The probability that porcelain vase is damaged because operation is ascended a height is reduced to 0.
（3）The time of ascending a height it will be reduced to below 15min.
2nd, economic benefit
（1）In terms of manpower is saved
Using the improved escalator dedicated 1 of ascending a height of institute, the people of two people's operation one is needed to climb in uplink and downlink, another people palm is helped；
Aloft in operation process, due to having used telescopic fixing band 4, helped without special messenger's palm, it is only necessary to people's operation.Made with eminence
Industry time average out to 20min is calculated, and single operation of ascending a height amounts to and needs the average man-hours to be：
T=2*11+20=42min people=0.7h people
Using high-altitude operation vehicle, whole process at least needs three people's operating apparatus operators, the people that ascends a height to be specialized in monitoring.According to statistics,
Using the time average out to 20min that ascends a height of high-altitude operation vehicle, therefore, single operation of ascending a height amounts to and needs the average man-hours to be：
T=3* (20+20)=120min people=2h people
Using hoistable platform, whole process at least needs three people's operating apparatus operators, the people that ascends a height to be specialized in monitoring.According to statistics, make
With the time average out to 15min that ascends a height of hoistable platform, therefore, single operation of ascending a height amounts to and needs the average man-hours to be：
T=3* (15+20)=105min people=1.75h people
Using common staircase 1, whole process needs the people of two people's operation one to climb, another people palm is helped.Use ascending a height the time for common staircase 1
30min is calculated as previously described, therefore, and single operation of ascending a height amounts to and needs the average man-hours to be：
T=2* (30+20)=100min people=1.67h people
Using scaffold, using universal operating efficiency as consideration, at least needing three people cost just to set up out for 2 hours is used for
The scaffold of 220kV sleeve of main transformer 5, further need exist for three people spend removed within 1 hour, therefore, word ascend a height operation total
The average man-hours are needed to be：
T=3*2*60+20+3*1*60=560min people=9.33h people
So that working hour expense is 15 yuan/h people as an example, only from saving from the aspect of manpower, using the escalator dedicated 1 of ascending a height after improvement, step on
High operating cost respectively than using high-altitude operation vehicle, hoistable platform, common staircase 1, set up scaffold and reduce 20 yuan/time, 16
Member/time, 15 yuan/time, 129 yuan/time.
（2）In terms of material resources are saved
The escalator dedicated 1 of ascending a height after improvement is used, it is not necessary to other any material resources spendings, with single the cost of escalator dedicated 1 of ascending a height
Be 2000 yuan with maintenance cost in validity period, design service life be 3 years, per annual using 20 calculating, single is ascended a height work
Industry material requested is with depreciation of equipment：
C=2000/ (3*20)=33 yuan
Using high-altitude operation vehicle, beyond the oil consumption for removing high-altitude operation vehicle, also need to consider usage charges and the depreciation of high-altitude operation vehicle
Take.Conservative estimation, single operation material requested of ascending a height is with depreciation of equipment：
C=1500 yuan
Using hoistable platform, situation is similar to high-altitude operation vehicle, and still conservative estimation single is ascended a height operation material requested and equipment
Depreciation cost is：
C=1500 yuan
Using common insulation staircase 1, the depreciation cost of insulation staircase 1 need to be only considered.With the single common insulation cost of staircase 1 with using
Maintenance cost is 1500 yuan in phase, design service life is 3 years, 50 calculating is used per annual, and single is ascended a height needed for operation
Material is with depreciation of equipment：
C=1500/ (3*50)=10 yuan
Use scaffold, it is only necessary to consider the depreciation cost of scaffolding.With maintenance expense in a full set of scaffold cost and validity period
Be 15000 yuan, design using 30 calculating, single operation material requested of ascending a height is with depreciation of equipment：
C=15000/30=500 yuan
Therefore, only from saving from the aspect of material resources, using the escalator dedicated 1 of ascending a height after improvement, operating cost of ascending a height is respectively than making
With high-altitude operation vehicle, hoistable platform, set up scaffold and reduce 1467 yuan/time, 1467 yuan/time, 467 yuan/time, only than using
Common insulation staircase 1 adds 23 yuan/time.
（3）In terms of device damage is reduced
The porcelain vase of 500kV main transformer medium voltage sides sleeve pipe 5 is likely to result in using common insulation staircase 1 to damage.According to the preliminary statistics, it is national
The probability that the porcelain vase of 500kV main transformer medium voltage sides sleeve pipe 5 is damaged in operation process is about 0.2%, and wherein most reason be all by
In what is caused using common insulation staircase 1.Using a cost of 500kV main transformer medium voltage sides sleeve pipe 5 as 20000 yuan of calculating, using general
Logical insulation staircase 1, the ascend a height equipment financial loss in operation institute's morning of single is desired for 40 yuan.Certainly, this does not include more casing replacing 5 also
Produced expense.
Work high above the ground is carried out using other manner, causes the possibility damaged to ignore equipment.Therefore, only from subtracting
From the aspect of few device damage, using the escalator dedicated 1 of ascending a height after improvement, operating cost ratio of ascending a height is reduced using common staircase 1
At least 40 yuan/time.
In summary, using ascend a height escalator dedicated 1 and the economic benefit ratio of other four kinds existing means of ascending a height after improvement
Compared with result as shown in table 9-2.
Table 9-2 and four kinds of existing means economic benefits comparisons of ascending a height
| Comparison other | Save human cost | Save material resources cost | Save equipment loss cost | Overall benefit |
| High-altitude operation vehicle | 20 yuan/time | 1467 yuan/time | 1487 yuan/time | |
| Hoistable platform | 16 yuan/time | 1467 yuan/time | 1483 yuan/time | |
| Common staircase 1 | 15 yuan/time | - 23 yuan/times | 40 yuan/time | 32 yuan/time |
| Set up scaffold | 129 yuan/time | 467 yuan/time | 586 yuan/time |
Generally, using the escalator dedicated 1 of ascending a height after improvement, operating cost of ascending a height is respectively than using high-altitude operation vehicle, lifting
Platform, common staircase 1, set up scaffold and reduce 1488 yuan/time, 1485 yuan/time, 22 yuan/time, 588 yuan/time.According to imperfect
In many tasks carried out on statistics, 500kV transformer medium voltage sides sleeve pipe 5, using high-altitude operation vehicle, hoistable platform, commonly help
Terraced 1, the number of times for setting up scaffold is respectively 15 times, 0 time, 14 times, 0 time, if all using the escalator dedicated of ascending a height after improving instead
1, then the economic benefit produced by 1 year exceeded 20000 yuan.In fact, carrying out with 500kV transformer medium voltage sides sleeve pipe 5
Work times increase, using the economic benefit produced by the escalator dedicated 1 of ascending a height after improvement also will be more and more significant.
3rd, social benefit
Compared with the benefit of economic aspect, the social benefit of the escalator dedicated 1 of ascending a height after improvement is more notable and important, main body
In terms of present three below：
（1）Escalator dedicated 1 is novel in design for ascending a height after improvement, be imbued with innovation, simple and practical, safety coefficient is high, reduces and ascends a height
Activity duration, positive role is played in terms of shortening the duration, reducing power off time, guarantee power supply reliability.
（2）Compared with common staircase 1, the security of the escalator dedicated 1 of ascending a height after improvement improves a lot, it is to avoid
The behavior of safety code is violated when common staircase 1 is used on 500kV transformer medium voltage sides sleeve pipe 5, can be solved well common
The bottom of staircase 1 is easily slided, testing crew easily slips when cat ladder is ascended a height, top is easily made very much to the porcelain vase of sleeve pipe 5 firmly
Into the problems such as damage, prevent potential safety hazard, it is significant for reducing personal injury and device damage.
（3）Compared with high-altitude operation vehicle, hoistable platform, the escalator dedicated 1 of ascending a height after improvement is in the absence of big machinery energy consumption
Excessive the problem of, there is positive effect for energy-saving and emission-reduction, environmental protection.
Sleeve pipe shown in figure 1 above -4 overhauls the specific embodiment that special step ladder is the present invention, has embodied this hair
Bright substantive distinguishing features and progress, under the enlightenment of the present invention, shape, structure etc. can be carried out to it according to actual use needs
The equivalent modifications of aspect, this programme protection domain row.
Claims (10)
1. sleeve pipe overhauls special step ladder, it is characterised in that：Including staircase（1）, located at staircase（1）The energy and sleeve pipe on top（5）
The Soft contact part of matching（201）, located at staircase（1）Bottom be used for increase staircase（1）The angle increase device for angle of ascending a height
（3）；Described angle increase device（3）Increase frame including angle（301）, located at angle increase frame（301）The support feet of bottom
（302）, located at angle increase frame（301）The soft part of side（303）, described angle increase frame（301）Side is and staircase
（1）The staircase of bottom connection（1）Connecting side, angle increase frame（301）On and staircase（1）Connecting side opposite side is sleeve pipe（5）
Matching side, described sleeve pipe（5）Matching side is provided with described soft part（303）, soft part（303）Lateral surface for can and sleeve pipe
（5）The arc concave surface of matching.
2. sleeve pipe according to claim 1 overhauls special step ladder, it is characterised in that：Described angle increase frame（301）
Width be W, angle increase frame（301）Width and staircase（1）Width matches, wherein 350 mm<W<450mm, support feet
（302）To staircase（1）The distance of connecting side is L1, angle increase frame（301）Length be L, wherein 250 mm<L<350mm；
150 mm <L1<250mm。
3. sleeve pipe according to claim 2 overhauls special step ladder, it is characterised in that：Described Soft contact part（201）
Pass through Soft contact part frame（202）It is connected to staircase（1）Top.
4. sleeve pipe according to claim 3 overhauls special step ladder, it is characterised in that：Described Soft contact part frame
（202）Two connecting rods being arranged side by side including left and right, described Soft contact part（201）It is crossed in two connecting rods.
5. sleeve pipe according to claim 4 overhauls special step ladder, it is characterised in that：The spacing of two connecting rods is S, connection
The length of bar is L2, wherein 350 mm<S<450mm；150 mm <L2<250mm.
6. sleeve pipe according to claim 5 overhauls special step ladder, it is characterised in that：Described Soft contact part（201）
For soft cloth；Described connecting rod is rigid rod, described Soft contact part frame（202）Also include bottom bar, cross bar；Connection
Bar is in " [" shape, the end vertical of connecting rod forms between side frame, side frame to be provided with cross bar and formed on bottom bar accommodates soft connect
Contact element（201）The deformation space of deformation；Described side frame and staircase（1）It is connected；Described Soft contact part frame（202）Top
Staircase（1）Top cross-arm is provided with and Soft contact part（201）The elastic component of homonymy.
7. sleeve pipe according to claim 6 overhauls special step ladder, it is characterised in that：Described connecting rod and staircase（1）
Between have angle theta, wherein 5 °<θ<30°.
8. sleeve pipe according to claim 7 overhauls special step ladder, it is characterised in that：Described staircase（1）Top and
Middle part is equipped with can be by staircase（1）Bundle to the telescopic fixing band ascended a height on thing（4）, described fixing band（4）Pass through horizontal company
Bar and staircase（1）It is connected.
9. sleeve pipe according to claim 8 overhauls special step ladder, it is characterised in that：Described staircase（1）To be telescopic
Staircase（1）, the fixing band of its middle and upper part（4）Positioned at apart from staircase（1）Top 500mm-700mm cross-arm position, middle part
Fixing band（4）Positioned at distance insulation staircase（1）Bottom 9000mm-11000 mm cross-arms position.
10. the sleeve pipe according to claim 1-8 any claims overhauls special step ladder, it is characterised in that：It is soft to connect
Contact element frame（202）Provided with for adjusting Soft contact part frame（202）With staircase（1）Between angle angle regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710149618.8A CN106968590B (en) | 2017-03-14 | 2017-03-14 | Casing overhauls dedicated step ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710149618.8A CN106968590B (en) | 2017-03-14 | 2017-03-14 | Casing overhauls dedicated step ladder |
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| Publication Number | Publication Date |
|---|---|
| CN106968590A true CN106968590A (en) | 2017-07-21 |
| CN106968590B CN106968590B (en) | 2019-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710149618.8A Active CN106968590B (en) | 2017-03-14 | 2017-03-14 | Casing overhauls dedicated step ladder |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021034954A1 (en) * | 2019-08-20 | 2021-02-25 | Ingenious Moves Llc | Crossbar assembly for an exercise ladder and an exercise ladder arrangement incorporating same |
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| CN205277273U (en) * | 2015-11-30 | 2016-06-01 | 国网河南宜阳县供电公司 | Pole ladder is stepped on to cement concrete pole |
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| CN206530276U (en) * | 2017-03-14 | 2017-09-29 | 国网浙江省电力公司检修分公司 | Sleeve pipe overhauls special step ladder |
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|---|---|---|---|---|
| GB2458327A (en) * | 2008-03-15 | 2009-09-16 | Geoffrey Rex Wilce | Ladder stabilising device with four adjustable feet |
| CN202338197U (en) * | 2011-12-12 | 2012-07-18 | 辽宁省电力有限公司锦州供电公司 | Elevating crawling ladder of electric pole |
| CN204152415U (en) * | 2014-07-07 | 2015-02-11 | 国家电网公司 | A kind of power transformation picture control probe ascend operation multifunction insulating ladder |
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| WO2021034954A1 (en) * | 2019-08-20 | 2021-02-25 | Ingenious Moves Llc | Crossbar assembly for an exercise ladder and an exercise ladder arrangement incorporating same |
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| Publication number | Publication date |
|---|---|
| CN106968590B (en) | 2019-03-05 |
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