CN113685129A - Scalable cat ladder of electric power tunnel access & exit - Google Patents
Scalable cat ladder of electric power tunnel access & exit Download PDFInfo
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- CN113685129A CN113685129A CN202111160567.1A CN202111160567A CN113685129A CN 113685129 A CN113685129 A CN 113685129A CN 202111160567 A CN202111160567 A CN 202111160567A CN 113685129 A CN113685129 A CN 113685129A
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- 241000282326 Felis catus Species 0.000 title description 17
- 230000009193 crawling Effects 0.000 claims abstract description 54
- 206010061258 Joint lock Diseases 0.000 claims abstract description 8
- 230000009194 climbing Effects 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 18
- 239000010959 steel Substances 0.000 claims description 18
- 238000009434 installation Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
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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
- E06C1/08—Ladders for resting against objects, e.g. walls poles, trees multi-part
- E06C1/12—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic
- E06C1/125—Ladders for resting against objects, e.g. walls poles, trees multi-part extensible, e.g. telescopic with tubular longitudinal members nested within each other
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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
- E06C1/38—Special constructions of ladders, e.g. ladders with more or less than two longitudinal members, ladders with movable rungs or other treads, longitudinally-foldable ladders
- E06C1/383—Foldable ladders in which the longitudinal members are brought together on folding
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/003—Indicating devices, e.g. user warnings or inclinators
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/02—Extending means
- E06C7/04—Hand-operated extending means carried by the ladder
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- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/16—Signs formed of or incorporating reflecting elements or surfaces, e.g. warning signs having triangular or other geometrical shape
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
- G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Geometry (AREA)
- Ladders (AREA)
Abstract
The invention belongs to the technical field of ladder stands at the entrance and the exit of a tunnel, and particularly discloses a telescopic ladder stand at the entrance and the exit of an electric power tunnel, which comprises a fixed-section ladder stand, a telescopic-section ladder stand and a supporting section; the fixed section crawling ladder is sleeved outside the telescopic section crawling ladder and is connected with the telescopic section crawling ladder in a sliding manner; the telescopic section crawling ladder is rotatably connected with the supporting section through a folding joint lock head; one side of the supporting section, which faces the ladder stand of the telescopic section, is provided with a groove, a transverse supporting rod is arranged in the groove, and the transverse supporting rod is connected with the supporting section through a rotating shaft. The fixed-section crawling ladder is provided with the telescopic-section crawling ladder, the part which can be lifted to the ground from the well can be arranged in the fixed-section crawling ladder when not used, when the fixed-section crawling ladder is used, the fixed-section crawling ladder is pulled to a fixed position through the top end, and personnel can go down to the position below a well mouth through the fixed-section crawling ladder without bending down or climbing down.
Description
Technical Field
The invention belongs to the technical field of ladder stands at the entrance and the exit of a tunnel, and particularly relates to a telescopic ladder stand at the entrance and the exit of an electric tunnel.
Background
At present, the ladder stand for the entrance and exit of the domestic electric power tunnel is a common vertical ladder stand, and when entering from a wellhead, a user needs to hold the ladder stand on the ground well edge and step by step to step on the ladder stand and then descend to the bottom of the tunnel. This kind of design continues to use for many years, along with the continuous increase of equipment in the tunnel, and daily patrolling and examining requires constantly to promote, consequently the well head that comes in and go out becomes the normality, and the cat ladder has a lot of problems as the important bearing tool of access & exit, causes work inconvenience.
The access & exit cat ladder has following several problems at present:
1. after the ground is rainy and snowy, the hands are easy to slip under the condition of wet slip, so that the safety risk is caused;
2. when climbing out of the well from the bottom of the well, in the final well-out stage, people need to support two sides with two hands to climb out due to the fact that no hand force points exist, and therefore the falling condition caused by insufficient hand force is easily caused while labor is wasted;
3. due to the fact that quantitative production is adopted, customized production after the depth of the well mouth is measured is not adopted, and therefore the situation that the ladder is too high away from the well bottom due to different depths of a plurality of well mouths is caused, and safety risks are caused.
4. According to safety regulations, the wellhead is to set a fence at the wellhead under the condition of opening, and a striking mark is placed for prompting. Such devices are carried additionally, and therefore, each work inspection must be carried out with a vehicle, which is time-consuming and labor-consuming.
Therefore, providing a new retractable ladder at the entrance and exit of the electric power tunnel is a technical problem that needs to be solved urgently by technical personnel in the field.
Disclosure of Invention
The invention aims to overcome the defects of the background art and provides a telescopic ladder stand for an entrance and an exit of an electric power tunnel.
The invention provides a telescopic ladder stand for an entrance and an exit of an electric power tunnel, which comprises a fixed section ladder stand, a telescopic section ladder stand and a supporting section, wherein the fixed section ladder stand is arranged on the fixed section ladder stand;
the telescopic section crawling ladder is rotatably connected with the supporting section through a folding joint lock head;
the fixed section crawling ladder is sleeved outside the telescopic section crawling ladder and the support section and is in slidable connection with the telescopic section crawling ladder;
one side of the supporting section, which faces the ladder stand of the telescopic section, is provided with a groove, a transverse supporting rod is arranged in the groove, and the transverse supporting rod is connected with the supporting section through a rotating shaft.
In a further aspect, the fixed segment ladder comprises
The ladder comprises two fixed stand columns and a fixed ladder stand connected with the fixed stand columns;
the fixed crawling ladder is provided with a groove used for embedding the telescopic section crawling ladder and the supporting section.
Further scheme does, flexible section cat ladder includes:
the two vertical square tubes are used for being in sliding connection with the fixed section crawling ladder; and
the transverse short pipes are arranged between the vertical square pipes and used for climbing, and two ends of each transverse short pipe are fixedly connected with the two vertical square pipes respectively;
one side of each vertical square tube, which is far away from the transverse short tube, is provided with a vertical sliding rod;
the fixed section crawling ladder is provided with a track relative to the inner wall;
the slide bar is located in the track.
The further proposal is that one side of each vertical square tube, which is far away from the transverse short tube, is provided with a plurality of spring bayonet locks;
limiting holes with the same number as the spring bayonet locks are formed in the corresponding positions of the fixed section crawling ladder relative to the inner wall;
when the telescopic section crawling ladder extends to a fixed height, the spring clamping pin is clamped into the limiting hole and used for fixing the telescopic section crawling ladder.
The supporting section comprises two supporting rods which are arranged in parallel;
one side of one of the supporting rods, which is far away from the ladder stand of the telescopic section, is provided with a limiting column, one side of the other square steel supporting rod, which is far away from the ladder stand of the telescopic section, is provided with an installation groove, a stop lever is arranged in the installation groove, one end of the stop lever is rotatably connected with the supporting section, and one end of the stop lever is provided with a bayonet;
the limiting column and the stop lever jointly form an anti-mistaken-entering assembly.
The solar energy ladder comprises a telescopic section ladder stand, a solar cell panel and a warning lamp, wherein the top of the telescopic section ladder stand is provided with the solar cell panel and the warning lamp which are electrically connected. The warning light is a flashing light.
The further scheme is that a reflective strip is arranged on the front face of the telescopic section crawling ladder and is bonded with the telescopic section crawling ladder.
Preferably, a lifting device is arranged at the top end of the telescopic section ladder stand and used for controlling the stretching of the spring bayonet;
the tail end of the spring clamping pin is fixed through a connecting rod, and the connecting rod is fixedly connected with a steel wire rope;
a first pulley and a second pulley are fixedly arranged in each vertical square tube, and a third pulley is arranged in a transverse short tube at the top of the spring bayonet lock;
the steel wire rope is sequentially wound around the first pulley, the second pulley and the third pulley;
the top end of the steel wire rope is connected with the lifting device. The lifting device is pulled to drive the steel wire rope to rotate along the third pulley, the second pulley and the first pulley respectively, so that the connecting rod is driven to move rightwards/leftwards, the pin head of the spring pin is pulled, and when the spring pin reaches a proper position (a limiting hole), the lifting device is loosened, so that the pin head is clamped into the limiting hole.
Preferably, a push switch is arranged in the mounting groove, and the stop lever is rotatably connected with the push switch. When not needing to take out the pin, press switch is in the off-state, and press switch's top is less than the upper surface of mounting groove this moment, need open press switch with the pin joint when spacing post, and press switch drives the pin and bounces for the pin exceeds the upper surface of mounting groove, through rotatory pin position, makes the pin with spacing post joint plays the effect of preventing mistake and going into.
Compared with the prior art, the invention has the beneficial effects that:
(1) the fixed-section crawling ladder is provided with the telescopic-section crawling ladder, the part which can be lifted to the ground from the well can be arranged in the fixed-section crawling ladder when not used, when the fixed-section crawling ladder is used, the fixed-section crawling ladder is pulled to a fixed position through the top end, and personnel can go down to the position below a well mouth through the fixed-section crawling ladder without bending down or climbing down.
(2) The ladder stand is provided with the supporting section and the transverse supporting rod, so that the ladder stand can still keep a stable state after the ladder stand of the telescopic section is higher than the ground, and the telescopic section is supported by the supporting section to form a triangular structure by utilizing a triangular stability theory so as to keep the whole telescopic section not to displace and shake.
(3) The anti-mistaken-entry assembly can be manually closed after a constructor goes into a well, so that the wellhead area is sealed, and the mistaken-entry falling is prevented.
(4) Night light warning subassembly adopts the design of solar energy battery flashing light, at flexible section top installation flashing light, rises to the well face after flexible section, and light is automatic to fill the ability to the lamp to the warning light scintillation plays safety and warning effect.
(5) The invention can form a complete reflective warning effect at night by bonding the reflective strips above the ground, thereby improving the working safety at night.
(6) The transverse supporting rod is embedded in the supporting section, and when the supporting section is not in use, the transverse supporting rod can be accommodated in the supporting section, so that the size of the portable folding chair is reduced, and the portable folding chair is convenient to carry.
Drawings
The invention is illustrated and described only by way of example and not by way of limitation in the scope of the invention as set forth in the following drawings, in which:
FIG. 1: the invention has a schematic structure;
FIG. 2: the ladder stand of the fixed section is in a schematic structure;
FIG. 3: the ladder stand of the telescopic section is schematic in structure;
FIG. 4: a support section support state diagram;
FIG. 5: part A is an enlarged schematic view;
FIG. 6: the invention uses a state diagram;
FIG. 7: a top view of the fixed section crawling ladder;
FIG. 8: a schematic diagram of a vertical square tube structure;
FIG. 9: a schematic view of a push switch structure;
FIG. 10: a spring bayonet pin linkage schematic diagram;
in the figure: the ladder comprises a fixed-section ladder stand, a telescopic-section ladder stand, a supporting section, a folding joint lock head, a limiting column, a sliding rod, a limiting hole, a mounting groove, a transverse supporting rod, a warning lamp, a rail, a rotating shaft, a spring clamping pin, a stop lever, a first pulley, a second pulley, a third pulley, a steel wire rope, a connecting rod, a push switch, a fixed upright post and a fixed ladder stand, wherein the fixed-section ladder stand is 1, the telescopic-section ladder stand is 2, the supporting section is 3, the folding joint lock head is 4, the limiting column is 5, the sliding rod is 6, the limiting hole is 7, the mounting groove is 8, the transverse supporting rod is 9, the warning lamp is 10, the rail is 11, the rotating shaft is 12, the spring clamping pin is 13, the stop lever is 14, the first pulley is 15, the second pulley is 16, the third pulley, the steel wire rope is 18, the connecting rod is 19, the push switch, the fixed upright post is 21 and the fixed ladder stand is 22.
Detailed Description
In order to make the objects, technical solutions, design methods, and advantages of the present invention more apparent, the present invention will be further described in detail by specific embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention effectively solves the problem that the inspection personnel is difficult to go into the well, can lead the working personnel to go out of the well and enter the well without the labor of the hand part, greatly reduces the working strength and simultaneously avoids the problems of dirty hands or slippery and falling hands caused by rain and snow weather.
Example 1
3. As shown in fig. 1-5, the invention provides a telescopic ladder stand for an entrance and an exit of an electric power tunnel, which comprises a fixed section ladder stand 1, a telescopic section ladder stand 2 and a supporting section 3; the fixed section crawling ladder 1 is sleeved outside the telescopic section crawling ladder 2 and is connected with the telescopic section crawling ladder 2 in a sliding manner; the telescopic section ladder 2 and the support section 3 are rotatably connected through a folding joint lock head 4; one side of the supporting section 3, which faces the telescopic section ladder stand 2, is provided with a groove, a transverse supporting rod 9 is arranged in the groove, and the transverse supporting rod 9 is connected with the supporting section 3 through a rotating shaft 12. The fixed-section crawling ladder 1 comprises two fixed vertical columns 21 and a fixed crawling ladder 22 connected with the fixed vertical columns; the fixed crawling ladder 22 is provided with a groove for embedding the telescopic section crawling ladder 2 and the support section 3.
As shown in fig. 3, the telescopic ladder 2 includes: the two vertical square tubes are used for being in sliding connection with the fixed section crawling ladder 1; the transverse short pipes are arranged between the vertical square pipes and used for climbing; the outer side of each vertical square tube is provided with a sliding rod 6; a track 11 is arranged on the inner side of the fixed-section crawling ladder 1; the slide rod 6 is connected with the track 11 in a sliding mode, the telescopic section crawling ladder 2 can be stretched in the fixed section crawling ladder 1 by adopting a drawer principle, and the outer side of each vertical square tube is provided with a spring bayonet 13; a limiting hole 7 is formed in the corresponding position of the inner side of the fixed-section crawling ladder 1; the cooperation of spring bayonet lock 13 and spacing hole 7 can guarantee that flexible section cat ladder 2 extends to appointed height. When the telescopic ladder 2 extends to a fixed height, the spring bayonet 13 is clamped into the limiting hole 7 and used for fixing the telescopic ladder 2.
With continued reference to fig. 3, the support section 3 is two square steels; the front surface of one of the square steels is provided with a limiting column 5, the front surface of the other square steel is provided with an installation groove 8, and a stop lever 14 is arranged in the installation groove 8; the limiting column 5 and the stop lever 14 jointly form an anti-false-entering assembly.
In this embodiment, 2 tops of flexible section cat ladders are provided with solar cell panel and warning light 10, solar cell panel and 10 electric connection of warning light. Wherein the warning light 10 is a flashing light. When the telescopic section rises to the well surface, light automatically charges the lamp, so that the warning lamp flickers to play a role in safety and warning.
In this embodiment, flexible section cat ladder 2 openly is provided with the reflection of light strip, the reflection of light strip with flexible section cat ladder 2 bonds. Improve the working safety at night.
In the above scheme, the plan view of fixed segment cat ladder 1 is shown in fig. 7, and the fixed cat ladder 22 of fixed segment cat ladder 1 is provided with the recess, and one side integrated into one piece that the support section 3 was kept away from to the vertical side pipe of flexible segment cat ladder 2 has the lug, when the assembly, with the lug card in the recess, can prevent flexible segment cat ladder 2 roll-off track 11 in the slip process.
In the above scheme, when the support section 3 is in the spreading state, as shown in fig. 4, the telescopic section ladder 2, the support section 3 and the transverse support rod 9 form a right triangle, so that the device above the whole wellhead forms a stable state. When the telescopic section cat ladder 2 is stretched to the appointed height, the supporting section 3 and the telescopic section cat ladder 2 can form a certain angle by opening the folding joint lock head 4, in the embodiment, the angle is 30 degrees, and after the angle is determined, the folding joint lock head 4 is closed. The transverse supporting rod 9 rotates to the horizontal state around the rotating shaft 12 and is abutted or clamped with the telescopic section ladder 2 to form a stable structure.
In the above solution, a push switch 20 is disposed in the mounting groove 8, and as shown in fig. 9, the stop lever 14 is rotatably connected to the push switch 20. When not needing to take out pin 14, push switch 20 is in the off-state, and push switch 20's top is less than the upper surface of mounting groove 8 this moment, need be with pin 14 joint when spacing post 5, open push switch 20, and push switch 20 drives pin 14 and bounces for pin 14 exceeds the upper surface of mounting groove 8, through rotatory pin 14 position, makes pin 14 with spacing post 5 joint plays the effect of preventing the mistake and going into.
The invention effectively solves the problem that the inspection personnel is difficult to go into the well, can lead the working personnel to go out of the well and enter the well without the labor of the hand part, greatly reduces the working strength and simultaneously avoids the problems of dirty hands or slippery and falling hands caused by rain and snow weather.
Meanwhile, inspection personnel do not need to carry and deploy the fence and the warning equipment, inspection workload is greatly reduced, and work efficiency is improved.
Example 2
In order to further improve the stability of the ladder stand with the telescopic sections, on the basis of embodiment 1, three spring bayonet pins 13 are sequentially arranged on the outer side of each vertical square pipe from top to bottom in this embodiment; the corresponding positions of the inner side of the fixed-section crawling ladder 1 are also provided with three limiting holes 7 from top to bottom in sequence; for preventing flexible section cat ladder 2 highest position spring bayonet lock 13 card when tensile goes into the spacing hole of the lowest position 7, lead to the not in place defect of tensile height, this embodiment is realized through following linkage structure:
as shown in FIG. 10, the spring catch 13 is embodied as a pull ring knob plunger, model GN 717-QZ.
A lifting device is arranged at the top end of the telescopic section ladder stand 2 and is used for controlling the extension and contraction of the spring bayonet lock 13; a pull ring at the tail end of the spring bayonet 13 is fixed through a connecting rod 19, and the connecting rod 19 is fixedly connected with a steel wire rope 18; a first pulley 15 and a second pulley 16 are fixedly arranged in each vertical square tube, and a third pulley 17 is arranged in a transverse short tube at the top of the spring bayonet 13; the steel wire rope 18 is sequentially wound around the first pulley 15, the second pulley 16 and the third pulley 17; the top end of the steel wire rope 18 is connected with the lifting device. The steel wire rope 18 is driven to rotate along the third pulley 17, the second pulley 16 and the first pulley 15 respectively by pulling the lifting device, so that the connecting rod 19 is driven to move rightwards/leftwards, the pin head of the spring pin is pulled, and when the spring pin head reaches a proper position (a limiting hole), the lifting device is loosened, so that the pin head is clamped into the limiting hole 7.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (9)
1. A telescopic ladder stand at an entrance and an exit of an electric power tunnel is characterized by comprising a fixed section ladder stand (1), a telescopic section ladder stand (2) and a supporting section (3);
the telescopic section ladder stand (2) is rotatably connected with the supporting section (3) through a folding joint lock head (4);
the fixed section crawling ladder (1) is sleeved outside the telescopic section crawling ladder (2) and the supporting section (3) and is connected with the telescopic section crawling ladder (2) in a sliding manner;
one side of the supporting section (3) facing the telescopic section ladder stand (2) is provided with a groove, a transverse supporting rod (9) is arranged in the groove, and the transverse supporting rod (9) is connected with the supporting section (3) through a rotating shaft (12).
2. A telescopic ladder according to claim 1, characterised in that the fixed section ladder (1) comprises
The ladder comprises two fixed upright posts (21) and a fixed ladder stand (22) connected with the fixed upright posts;
the fixed crawling ladder (22) is provided with a groove for embedding the telescopic section crawling ladder (2) and the support section (3).
3. A telescopic ladder according to claim 1, characterised in that the telescopic section ladder (2) comprises:
the two vertical square tubes are used for being in sliding connection with the fixed section crawling ladder (1); and
the transverse short pipes are arranged between the vertical square pipes and used for climbing, and two ends of each transverse short pipe are fixedly connected with the two vertical square pipes respectively;
a vertical sliding rod (6) is arranged on one side, away from the transverse short pipe, of each vertical square pipe;
a track (11) is arranged on the inner wall of the fixed section crawling ladder (1) opposite to the fixed section crawling ladder;
the slide bar (6) is located within the track (11).
4. The retractable ladder stand for the entrance and exit of the electric power tunnel as claimed in claim 3, wherein a plurality of spring pins (13) are arranged on one side of each vertical square pipe, which is far away from the transverse short pipe;
the corresponding position of the fixed section crawling ladder (1) relative to the inner wall is provided with limiting holes (7) with the same number as the spring bayonet locks (13);
when the telescopic ladder (2) is extended to a fixed height, the spring bayonet lock (13) is clamped in the limiting hole (7) and used for fixing the telescopic ladder (2).
5. A telescopic ladder according to claim 1, characterised in that the support section (3) comprises two parallel arranged struts;
one side, away from the telescopic crawling ladder (2), of one support rod is provided with a limiting column (5), one side, away from the telescopic crawling ladder (2), of the other square steel support rod is provided with an installation groove (8), a stop lever (14) is arranged in the installation groove (8), one end of the stop lever (14) is rotatably connected with the support section (3), and one end of the stop lever (14) is provided with a bayonet;
the limiting column (5) and the stop lever (14) jointly form an anti-false-entering assembly.
6. The telescopic ladder stand for the entrance and exit of the electric power tunnel as claimed in claim 1, wherein a solar panel and a warning lamp (10) are arranged on the top of the telescopic ladder stand (2), and the solar panel is electrically connected with the warning lamp (10).
7. The telescopic ladder stand for the entrance and exit of the electric power tunnel as claimed in claim 1, wherein a light reflecting strip is arranged on one side of the support section (3) far away from the ladder stand (2) of the telescopic section, and the light reflecting strip is bonded with the support section (3).
8. The telescopic ladder stand for the entrance and exit of the electric power tunnel as claimed in claim 4, wherein the top end of the telescopic ladder stand (2) is provided with a lifting device for controlling the extension and retraction of the spring bayonet lock (13);
the tail end of the spring clamping pin (13) is fixed through a connecting rod (19), and the connecting rod (19) is fixedly connected with a steel wire rope (18);
a first pulley (15) and a second pulley (16) are fixedly arranged in each vertical square tube, and a third pulley (17) is arranged in a transverse short tube at the top of the spring bayonet lock (13);
the steel wire rope (18) is sequentially wound around the first pulley, the second pulley (16) and the third pulley (17);
the top end of the steel wire rope (18) is connected with the lifting device.
9. The telescopic ladder stand for the entrance and exit of the electric power tunnel as claimed in claim 5, wherein a push switch (20) is arranged in the mounting groove (8), and the stop lever (14) is rotatably connected with the push switch (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111160567.1A CN113685129A (en) | 2021-09-30 | 2021-09-30 | Scalable cat ladder of electric power tunnel access & exit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111160567.1A CN113685129A (en) | 2021-09-30 | 2021-09-30 | Scalable cat ladder of electric power tunnel access & exit |
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| Publication Number | Publication Date |
|---|---|
| CN113685129A true CN113685129A (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111160567.1A Pending CN113685129A (en) | 2021-09-30 | 2021-09-30 | Scalable cat ladder of electric power tunnel access & exit |
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| CN207598178U (en) * | 2017-12-12 | 2018-07-10 | 河南森源鸿马电动汽车有限公司 | A kind of plug-type vehicle-mounted cat ladder of police vehicle |
| CN212454428U (en) * | 2020-05-07 | 2021-02-02 | 中建八局第二建设有限公司 | Defect repairing operation platform in shield tunnel |
| CN112377089A (en) * | 2020-10-20 | 2021-02-19 | 北京卓越电力建设有限公司 | Well head cat ladder |
| CN215927233U (en) * | 2021-09-30 | 2022-03-01 | 西安和润电力科技有限公司 | Scalable cat ladder of electric power tunnel access & exit |
-
2021
- 2021-09-30 CN CN202111160567.1A patent/CN113685129A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0729298U (en) * | 1993-11-10 | 1995-06-02 | 廣宣 森崎 | A stepladder with three legs that can be extended |
| US5590739A (en) * | 1994-11-01 | 1997-01-07 | High; Dewayne A. | Adjustable extension stepladder |
| CN205206724U (en) * | 2015-12-03 | 2016-05-04 | 国家电网公司 | Electric power overhaul ladder |
| CN207453855U (en) * | 2017-10-24 | 2018-06-05 | 珠海电力建设工程有限公司 | A kind of interim hanging ladder for increasing length for electric power network repairing |
| CN207598178U (en) * | 2017-12-12 | 2018-07-10 | 河南森源鸿马电动汽车有限公司 | A kind of plug-type vehicle-mounted cat ladder of police vehicle |
| CN212454428U (en) * | 2020-05-07 | 2021-02-02 | 中建八局第二建设有限公司 | Defect repairing operation platform in shield tunnel |
| CN112377089A (en) * | 2020-10-20 | 2021-02-19 | 北京卓越电力建设有限公司 | Well head cat ladder |
| CN215927233U (en) * | 2021-09-30 | 2022-03-01 | 西安和润电力科技有限公司 | Scalable cat ladder of electric power tunnel access & exit |
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