CN112196456A - Special telescopic ladder for inspection well - Google Patents
Special telescopic ladder for inspection well Download PDFInfo
- Publication number
- CN112196456A CN112196456A CN202011089965.4A CN202011089965A CN112196456A CN 112196456 A CN112196456 A CN 112196456A CN 202011089965 A CN202011089965 A CN 202011089965A CN 112196456 A CN112196456 A CN 112196456A
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- Prior art keywords
- telescopic ladder
- shaped section
- holes
- ring
- inspection well
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-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C9/00—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes
- E06C9/06—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted
- E06C9/08—Ladders characterised by being permanently attached to fixed structures, e.g. fire escapes movably mounted with rigid longitudinal members
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/127—Manhole shafts; Other inspection or access chambers; Accessories therefor with devices for impeding fall or injuries of persons
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/50—Joints or other connecting parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Ladders (AREA)
Abstract
A telescopic ladder special for an inspection well relates to a ladder, wherein one side of an inner opening of a well mouth ring (23) is provided with two recessed angles (6) which are arranged at intervals, the outer edge of the upper opening of the well mouth ring is provided with a convex ring (5), rotating shafts (9) at two ends of an H-shaped section bar (12) at the upper end of the telescopic ladder are respectively inserted into rotating shaft holes (4) which are arranged oppositely to the two recessed angles, and a safety net (2) is buckled on the upper end surface of the well mouth ring; the telescopic ladder comprises a plurality of H-shaped sectional materials which are arranged from top to bottom at intervals, every two adjacent H-shaped sectional materials close to the concave grooves at the lower parts of the middle plates (10) at the two ends are respectively connected with the upper ends of the upper connecting rods (14), the lower ends of the upper connecting rods are connected with the upper ends of the lower connecting rods (16), and the lower ends of the lower connecting rods are connected in the concave grooves at the upper parts of the middle plates of the adjacent H-shaped sectional materials at the lower parts; the safety net can protect the safety net from being hit by foreign matters during operation.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to a ladder, in particular to a telescopic ladder special for an inspection well.
[ background of the invention ]
As is known, the urban inspection well ownership is usually related to the management of departments such as drainage, water supply, electric power, communication, gas or illumination, and the like, the inspection well is mostly arranged on a road, and the inspection well is usually positioned at a turning place, a branch place, a falling place, and the like so as to facilitate inspection; due to various reasons, the drainage well is easy to block, and further causes the cross flow of sewage on the road surface and the odor fumigation; during urban road construction, pipelines are dug and broken due to the fact that water supply pipelines, power lines, communication lines, gas pipelines or lighting power lines are often constructed roughly, inspection wells are the main ways for cleaning drainage pipelines and closing water supply valves or gas valves, and are also maintenance nodes of power, communication or lighting line equipment; when the inspection well is maintained and constructed, the inspection well is positioned on roads, residential districts, school squares, enterprise and public institutions, large yards or urban squares, so that adults or children are easy to fall into the inspection well during construction due to carelessness or low-head mobile phones and the like; bricks or other objects are kicked into the inspection well, so that underground personnel can be injured; the ladder is not arranged in a plurality of inspection wells, and the long ladder is very inconvenient to carry during construction.
[ summary of the invention ]
In order to overcome the defects in the background art, the invention discloses a telescopic ladder special for an inspection well, which is placed on an inspection well opening through a well opening ring and a convex ring, a fixed point of the telescopic ladder is formed by a concave angle of the well opening ring, the telescopic ladder is convenient to enter the well for operation, and a safety net can protect the ladder from being injured by foreign matters during operation.
The technical scheme for realizing the invention is as follows:
a telescopic ladder special for an inspection well comprises a wellhead ring, a safety net and a telescopic ladder, wherein two recessed angles are arranged at one side of an inner opening of the wellhead ring at intervals, a protruding ring is arranged at the outer edge of an upper opening of the wellhead ring, rotating shafts at two ends of an H-shaped section at the upper end of the telescopic ladder are respectively inserted into rotating shaft holes which are arranged opposite to the two recessed angles of the wellhead ring, and the safety net is buckled on the upper end surface of the wellhead ring; the telescopic ladder comprises a plurality of 'H' -shaped sectional materials which are arranged at intervals from top to bottom, every two adjacent 'H' -shaped sectional materials are hinged to the upper end of the upper connecting rod near the concave groove of the lower part of the middle plate at the two ends, the lower end of the upper connecting rod is hinged to the upper end of the lower connecting rod, and the lower end of the lower connecting rod is hinged to the concave groove of the upper part of the middle plate of the adjacent 'H' -shaped sectional material at the lower part to form the telescopic ladder.
The special telescopic ladder for the inspection well is characterized in that the safety net is arranged in the middle of the annular plate, the lower surface of the annular plate is provided with a plurality of insertion rods, the upper surface of the protruding ring is provided with a plurality of surrounding insertion holes, and the plurality of insertion rods of the annular plate are respectively in insertion connection with the plurality of insertion holes of the protruding ring.
According to the telescopic ladder special for the inspection well, a plurality of screw holes are formed in the vertical wall, close to the upper parts of the two ends, of the middle plate of the H-shaped material on the uppermost part of the telescopic ladder, the two blocks are respectively positioned in the concave grooves, close to the upper parts of the two ends, of the H-shaped material, and a plurality of screws are connected with the screw holes in the front and rear surfaces of the block body through the screw holes in the front and rear vertical walls on the upper parts of the two ends of the H; the middle parts of the outer side surfaces of the two bodies are respectively provided with a rotating shaft.
The telescopic ladder special for the inspection well is characterized in that every two adjacent H-shaped materials are hinged with two upper connecting rods through upper connecting shafts respectively near the concave grooves at the lower parts of the middle plates at the two ends, the upper connecting shaft between the upper ends of the two upper connecting rods is provided with a spacing ring, the two ends of the upper connecting shaft, which are close to the upper ends, are penetrated in the holes at the upper ends of the two upper connecting rods, the two ends of the upper connecting shaft are respectively fixed in the shaft holes of the two vertical walls at the lower part of the H-shaped section bar, the upper end of the lower connecting rod is positioned between the lower ends of the two upper connecting rods, the middle part of the connecting shaft penetrates through the hole at the upper end of the lower connecting rod, the two ends of the connecting shaft are respectively and fixedly connected with the holes at the lower ends of the two upper connecting rods, the front and the back of the lower end of the lower connecting rod are respectively provided with a spacer ring, the middle part of the lower connecting shaft penetrates through a hole at the lower end of the lower connecting rod, the lower connecting shaft is fixedly connected in the shaft holes of the two vertical walls of the H-shaped material close to the upper parts of the middle plates at the two ends after respectively penetrating through the two isolating rings at the two ends of the lower connecting shaft.
The telescopic ladder special for the inspection well is characterized in that two port holes of two end holes of the upper connecting rod and the lower connecting rod are respectively provided with a convex ring.
The special telescopic ladder for the inspection well is characterized in that two ends of a middle plate of each H-shaped material except the H-shaped material on the upper portion are respectively connected with clamping grooves in the middle of a check block, and the upper inner surface and the lower inner surface of the check block are respectively inserted into upper and lower concave grooves in two ends of the H-shaped material.
The special telescopic ladder for the inspection well is characterized in that wing plates are respectively arranged at the front and the back of the upper part of each H-shaped material except the H-shaped material on the upper part.
The special telescopic ladder for the inspection well is characterized in that the middle of each wing plate is provided with a protruding strip respectively.
The special telescopic ladder for the inspection well is of a splayed structure with the outer part inclined downwards, and wing plates in front of and behind the upper part of the H-shaped section bar are of a splayed structure with the outer part inclined downwards.
The special telescopic ladder for the inspection well is characterized in that rectangular through holes are respectively formed between two ends of a middle plate of each H-shaped section bar, and the rectangular through holes are used for acquiring dust accumulated in concave grooves in the upper portions of the H-shaped section bars.
Through the disclosure, the beneficial effects of the invention are as follows:
according to the telescopic ladder special for the inspection well, when the telescopic ladder is not used, each upper connecting rod and each lower connecting rod of the telescopic ladder are folded and hidden in the concave grooves on the upper portion and the lower portion of the H-shaped material, the annular plate safety net buckled on the convex ring faces downwards, and at the moment, a placing space of the telescopic ladder is formed in the well mouth ring; when the safety manhole is used, a well mouth ring slightly smaller than the manhole mouth is inserted into the manhole mouth, a stable wellhead is formed by pressing the convex ring arranged at the outer edge of the well mouth ring on the ground at the upper part of the manhole mouth for fixing, then the telescopic ladder is released, at the moment, the telescopic ladder can fall into the well by using the self weight through the rotating shaft, a constructor can go into the well through the foot rest lever formed by the H-shaped section bar and the wing plate, at the moment, the aboveground personnel or the personnel entering the well completely buckle the annular plate on the upper part of the convex ring and are plugged with the jack of the convex ring through the plugging rod of the annular plate, so that the construction safety of the underground personnel can be ensured, and even if the aboveground personnel go to other places, the operation of the underground personnel; the safety net has a small structure, is convenient to carry, and can protect underground personnel from being injured by foreign matters during operation.
[ description of the drawings ]
FIG. 1 is a perspective assembly view of the present invention;
FIG. 2 is a schematic perspective view of the present invention;
FIG. 3 is a schematic representation of a wellhead loop structure of the present invention;
FIG. 4 is a schematic perspective view of an "H" shaped section bar according to the present invention;
FIG. 5 is a schematic view of the three-dimensional structure of the uppermost H-shaped section bar of the present invention;
FIG. 6 is a perspective view of the stop of the present invention;
FIG. 7 is a schematic perspective view of a block of the present invention;
FIG. 8 is a schematic perspective view of the upper and lower connecting rods of the present invention;
in the figure: 1. an annular plate; 2. a safety net; 3. inserting a rod; 4. a rotation shaft hole; 5. a projecting ring; 6. a recessed corner; 7. screws; 8. a block body; 9. a rotating shaft; 10. a middle plate; 11. a shaft hole; 12. h-shaped section bar; 13. a spacer ring; 14. an upper connecting rod; 15. an aperture; 16. a lower connecting rod; 17. an isolating ring; 18. a stopper; 19. a lower connecting shaft; 20. an upper connecting shaft; 21. a connecting shaft; 22. a wing plate; 23. a wellhead ring; 24. a jack; 25. a raised strip; 26. a rectangular through hole; 27. a card slot; 28. a screw hole; 29. a projecting ring; 30. screw holes of the screws.
[ detailed description ] embodiments
The present invention will be further illustrated with reference to the following examples; the following examples are not intended to limit the present invention, and are only used as a support for the implementation of the present invention, and any equivalent structure replacement within the technical framework of the present invention is included in the protection scope of the present invention;
the special telescopic ladder for the inspection well comprises a wellhead ring 23, a safety net 2 and a telescopic ladder, wherein two recessed angles 6 are arranged on one side of an inner opening of the wellhead ring 23 at intervals, a protruding ring 5 is arranged on the outer edge of an upper opening of the wellhead ring 23, rotating shafts 9 at two ends of an H-shaped section bar 12 at the upper end of the telescopic ladder are respectively inserted into rotating shaft holes 4 arranged on opposite surfaces of the two recessed angles 6 of the wellhead ring 23, the safety net 2 is positioned in the middle of an annular plate 1, a plurality of inserting rods 3 are arranged on the lower surface of the annular plate 1, a plurality of surrounding inserting holes 24 are arranged on the upper surface of the protruding ring 5, the plurality of inserting rods 3 of the annular plate 1 are respectively connected with the plurality of inserting holes 24 of the protruding ring 5 in an inserting mode, and the safety net 2 is stably buckled on the upper end surface of the wellhead ring 23; the telescopic ladder comprises a plurality of 'H' -shaped sections 12 arranged at intervals from top to bottom, every two adjacent 'H' -shaped sections 12 are hinged to the upper ends of upper connecting rods 14 near the concave grooves of the lower portions of two-end middle plates 10 respectively, the lower ends of the upper connecting rods 14 are hinged to the upper ends of lower connecting rods 16, the lower ends of the lower connecting rods 16 are hinged to the concave grooves of the upper portions of the middle plates 10 of the lower adjacent 'H' -shaped sections 12 to form the telescopic ladder, rectangular through holes 26 are respectively arranged between the two ends of the middle plates 10 of each 'H' -shaped section 12, and the rectangular through holes 26 are used for preventing dust from being accumulated in the concave grooves of the upper portions of the 'H' -shaped sections 12.
With reference to fig. 1, 2, 4, 5, 6, 7 or 8, the middle plate 10 of the H-shaped section bar 12 at the top of the telescopic ladder is provided with a plurality of screw holes 30 near the vertical walls at the upper parts of the two ends, the two bodies 8 are respectively positioned in the concave grooves of the H-shaped section bar 12 near the upper parts of the two ends, and the screws 7 are connected with the screw holes 28 at the front and rear surfaces of the block body 8 through the screw holes 30 at the front and rear vertical walls at the upper parts of the two ends of the H-shaped section bar 12; the middle parts of the outer side surfaces of the two bodies 8 are respectively provided with a rotating shaft 9; every two adjacent H-shaped section bars 12 are hinged with two upper connecting rods 14 through upper connecting shafts 20 respectively, the upper connecting shaft 20 between the upper ends of the two upper connecting rods 14 is provided with a spacing ring 13, the two ends of the upper connecting shaft 20 close to the upper ends of the two upper connecting rods 14 are penetrated in holes 15 at the upper ends of the two upper connecting rods 14, the two ends of the upper connecting shaft 20 are fixed in shaft holes 11 of two vertical walls at the lower part of the H-shaped section bar 12 respectively, the upper end of a lower connecting rod 16 is positioned between the lower ends of the two upper connecting rods 14, the middle part of the connecting shaft 21 is penetrated in a hole 15 at the upper end of the lower connecting rod 16, the two ends of the connecting shaft 21 are fixedly connected with the holes 15 at the lower ends of the two upper connecting rods 14 respectively, the front and the rear of the lower connecting rod 16 are provided with a spacing ring 17 respectively, the middle part of the lower connecting shaft 19 is penetrated in the hole 15 at the lower end of the lower connecting rod 16, protruding rings 29 are respectively provided at both end ports of both end holes 15 of the upper and lower connection bars 14 and 16.
With reference to fig. 1, 2, 4, 5 or 6, the two ends of the middle plate 10 of each H-shaped section 12 except the upper H-shaped section 12 are respectively connected with the clamping grooves 27 in the middle of the stop block 18, and the upper inner surface and the lower inner surface of the stop block 18 are respectively inserted into the upper concave grooves and the lower concave grooves at the two ends of the H-shaped section 12; wing plates 22 are respectively arranged at the front and the rear of the upper part of each H-shaped material 12 except the upper H-shaped material 12, a convex strip 25 is respectively arranged at the middle part of each wing plate 22, and the wing plates 22 at the front and the rear of the upper part of the H-shaped material 12 are of a splayed structure with the outer part inclined downwards.
The special telescopic ladder for the inspection well is manufactured by combining the attached drawings 1 to 8, wherein the annular plate 1, the well mouth ring 23, the H-shaped section bar 12, the upper connecting rod 14 and the lower connecting rod 16 are preferably made of aluminum alloy with high strength and high weight, the H-shaped section bar 12 can be made of the section bar shown in the attached drawing 4, and the section bar is obtained by a pouring method; the safety net 2 is made of a stainless steel wire or a nylon rope with high strength; the stop block 18 is preferably made of plastic and is connected with the H-shaped section bar 12 in a hot melting mode; the block 8 and the rotating shaft 9 are preferably made of high-strength aluminum alloy;
the installation process is as follows:
firstly, drilling a plurality of holes on the position, close to the inner opening, of the annular plate 1 by using an electric drill, and if a nylon rope net is used, fixing a safety net 2 matched with the inner opening of the annular plate 1 by binding; if the stainless steel wire mesh grid is used, the end part ring can be formed by inserting holes into the end parts of a plurality of holes of steel wires at the inner opening of the annular plate 1 and then bending the steel wires to be fixed; mounting a telescopic ladder, namely putting a spacing ring 13 between the upper ends of two upper connecting rods 14, penetrating the spacing ring into a concave groove at the lower part of an H-shaped section bar 12, penetrating an upper connecting shaft 20 into a shaft hole 11 of the vertical wall at the front lower part of one end of the H-shaped section bar 12, a hole 15 at the upper end of one upper connecting rod 14, a hole of the spacing ring 13 and a hole 15 at the upper end of the other upper connecting rod 14, penetrating a shaft hole 11 of the vertical wall at the rear part of the H-shaped section bar 12, and then hammering two ends of the upper connecting shaft 20 to expand the two ends of the upper connecting shaft, wherein the protruding rings 29 at the two end openings of the hole 15 of the upper connecting rod 14 can reduce the frictional resistance with the vertical wall of the H-shaped section bar 12; the method comprises the steps that the protruding rings 29 on two sides of a lower end hole 15 of a lower connecting rod 16 are sleeved with isolating rings 17 respectively, then the protruding rings penetrate into a concave groove in the upper portion of an H-shaped section 12, a lower connecting shaft 19 penetrates into a shaft hole 11 in the front upper portion vertical wall of one end of the H-shaped section 12, the isolating rings 17, a hole 15 of the lower connecting rod 16, the shaft hole 11 in the rear vertical wall of the H-shaped section 12 after the other isolating ring 17 penetrates, then two ends of the lower connecting shaft 19 are expanded in diameter through hammering, and the installation method of the lower connecting rod 16 at the other end of the H-shaped section 12 is the same as that before; the upper end of a lower connecting rod 16 penetrates between the lower ends of two upper connecting rods 14, connecting shafts 21 are used for connecting the lower connecting rod 16 and holes 15 of the two upper connecting rods 14 in series, and hammering is used for expanding the diameter of the two ends of the lower connecting rod 16 to obtain a layer of ladder; the rest ladder installation method is the same as before, it should be noted that, because the "H" shaped section 12 at the top is not stressed, the wing plate 22 can be eliminated (if the height of the "H" shaped section 12 plus the two wing plates 22 when standing does not exceed the height of the recessed angle 6), or in order to save cost, all the "H" shaped sections 12 can use the same structure, the "H" shaped section 12 at the top in the present application uses the structure shown in fig. 5, i.e. a little higher, one of the two blocks 8 is installed at one end of the recessed groove at the top of the "H" shaped section 12 by using the screw 7, the rotating shaft 9 of the block 8 is inserted into the rotating shaft hole 4 corresponding to one of the two recessed angles 6, then the other block 8 is placed into the recessed groove at the top of the "H" shaped section 12, the rotating shaft 9 of the other block 8 is inserted into the rotating shaft hole 4 of the other recessed angle 6 by sliding the other block 8, the other block 8 is fixed using screws 7.
When the inspection well is used, the inspection well can be taken as a spare inspection object, the upper connecting rod 14 and the lower connecting rod 16 are hidden in concave grooves above and below two H-shaped sectional materials 12, when the inspection well is subjected to inspection operation, the annular plate 1 is taken down after the inspection well cover is opened, then the manhole ring 23 is inserted into the upper opening of the inspection well, the lower part of the protruding ring 5 is pressed on the ground on the upper part of the inspection well to be fixed, then the telescopic ladder is released, the pedal rod formed by each H-shaped sectional material 12 is rotated through the two rotating shafts 9 to extend and fall into the well by using the dead weight, a constructor can enter the well through the pedal rod formed by the H-shaped sectional materials 12 and the wing plate, the annular plate 1 is buckled on the upper part of the protruding ring 5 after the aboveground personnel or the persons enter the well completely, meanwhile, the inserting rods 3 of the annular plate 1 are inserted into the inserting holes 24 of the protruding ring 5, and the annular plate 1 is ensured not to be blown away by wind or kicked away by the pedestrians on the road by accident, therefore, the construction safety of underground personnel can be guaranteed, and even if the personnel on the well go to other places, the operation and the safety of the underground personnel are not influenced by the protection of the safety net 2.
The present invention is not described in detail in the prior art.
Claims (10)
1. The utility model provides a special telescopic ladder of inspection shaft, includes well head ring (23), safety net (2) and telescopic ladder, characterized by: two recessed angles (6) arranged at intervals are arranged on one side of the inner opening of the wellhead ring (23), a protruding ring (5) is arranged on the outer edge of the upper opening of the wellhead ring (23), rotating shafts (9) at two ends of an H-shaped section bar (12) at the upper end of the telescopic ladder are respectively inserted into rotating shaft holes (4) arranged on the opposite surfaces of the two recessed angles (6) of the wellhead ring (23), and a safety net (2) is buckled on the upper end surface of the wellhead ring (23); the telescopic ladder comprises a plurality of 'H' -shaped sections (12) which are arranged at intervals from top to bottom, every two adjacent 'H' -shaped sections (12) are hinged to the upper end of an upper connecting rod (14) respectively near the concave grooves of the lower parts of two end middle plates (10), the lower end of the upper connecting rod (14) is hinged to the upper end of a lower connecting rod (16), and the lower end of the lower connecting rod (16) is hinged to the concave grooves of the upper parts of the lower adjacent 'H' -shaped sections (12) middle plates (10) to form the telescopic ladder.
2. The special telescopic ladder for the inspection well is characterized in that: safety net (2) are in the middle part of annular plate (1), the lower part face of annular plate (1) is equipped with many inserted bars (3), is equipped with a plurality of jacks (24) that encircle in the upper portion face of bulge ring (5), and many inserted bars (3) of annular plate (1) are connected with a plurality of jacks (24) of bulge ring (5) plug-in connection respectively.
3. The special telescopic ladder for the inspection well is characterized in that: the vertical wall of the middle plate (10) of the H-shaped section bar (12) at the uppermost part of the telescopic ladder, which is close to the upper parts of the two ends, is provided with a plurality of screw nail holes (30), the two block bodies (8) are respectively positioned in the concave grooves of the H-shaped section bar (12), which are close to the upper parts of the two ends, and the plurality of screws (7) are connected with the screw holes (28) at the front and the rear of the block bodies (8) through the screw nail holes (30) at the front and the rear vertical walls at the upper parts of the two ends; the middle parts of the outer side surfaces of the two block bodies (8) are respectively provided with a rotating shaft (9).
4. The special telescopic ladder for the inspection well is characterized in that: every two adjacent H-shaped sections (12) are hinged with two upper connecting rods (14) through upper connecting shafts (20) respectively near the concave grooves at the lower parts of the middle plates (10) at the two ends, a spacing ring (13) is arranged on the upper connecting shaft (20) between the upper ends of the two upper connecting rods (14), the two ends of the upper connecting shaft (20) near the two ends penetrate through holes (15) at the upper ends of the two upper connecting rods (14), the two ends of the upper connecting shaft (20) are fixed in shaft holes (11) of two vertical walls at the lower parts of the H-shaped sections (12) respectively, the upper end of a lower connecting rod (16) is positioned between the lower ends of the two upper connecting rods (14), the middle part of the connecting shaft (21) penetrates through the hole (15) at the upper end of the lower connecting rod (16), the two ends of the connecting shaft (21) are fixedly connected with the holes (15) at the lower ends of the two upper connecting rods (14, the middle part of a lower connecting shaft (19) penetrates through a hole (15) at the lower end of a lower connecting rod (16), and the lower connecting shaft (19) close to two ends respectively penetrates through two isolating rings (17) and then is fixedly connected in shaft holes (11) of two vertical walls of an H-shaped section bar (12) close to the upper parts of middle plates (10) at two ends.
5. The special telescopic ladder for the inspection well is characterized in that: two port holes of two port holes (15) of the upper connecting rod (14) and the lower connecting rod (16) are respectively provided with a convex ring (29).
6. The special telescopic ladder for the inspection well is characterized in that: two ends of the middle plate (10) of each H-shaped section bar (12) except the upper H-shaped section bar (12) are respectively connected with a clamping groove (27) in the middle of the stop block (18), and the upper inner surface and the lower inner surface of the stop block (18) are respectively inserted into the upper sunken groove and the lower sunken groove in the two ends of the H-shaped section bar (12).
7. The special telescopic ladder for the inspection well is characterized in that: wing plates (22) are respectively arranged at the front and the rear of the upper part of each H-shaped section (12) except the upper H-shaped section (12).
8. The telescopic ladder special for the inspection well is characterized in that: the middle part of each wing plate (22) is respectively provided with a convex strip (25).
9. The telescopic ladder special for the inspection well is characterized in that: the wing plates (22) at the front and the rear of the upper part of the H-shaped section bar (12) are of a splayed structure with the outer part inclined downwards.
10. The special telescopic ladder for the inspection well is characterized in that: rectangular through holes (26) are respectively arranged between two ends of the middle plate (10) of each H-shaped section bar (12), and dust is prevented from being accumulated in the concave grooves in the upper parts of the H-shaped section bars (12) obtained through the rectangular through holes (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011089965.4A CN112196456A (en) | 2020-10-13 | 2020-10-13 | Special telescopic ladder for inspection well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011089965.4A CN112196456A (en) | 2020-10-13 | 2020-10-13 | Special telescopic ladder for inspection well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112196456A true CN112196456A (en) | 2021-01-08 |
Family
ID=74009968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011089965.4A Withdrawn CN112196456A (en) | 2020-10-13 | 2020-10-13 | Special telescopic ladder for inspection well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112196456A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023204716A1 (en) * | 2022-04-21 | 2023-10-26 | Sveinung Lein | Device for securing an object to a frame for a manhole cover |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM466968U (en) * | 2013-05-10 | 2013-12-01 | Jun-Han Huang | Anti-theft escape ladder |
| CN206144453U (en) * | 2016-11-03 | 2017-05-03 | 温州华隆建设有限公司 | Municipal works construction is with inspection shaft ladder and inspection shaft structure |
| CN208023614U (en) * | 2017-11-10 | 2018-10-30 | 国网江苏省电力公司泰州供电公司 | A kind of pipeline or well head overhaul closing cap |
| CN208792369U (en) * | 2018-05-24 | 2019-04-26 | 宁波华科道路设施有限公司 | A kind of inspection shaft |
-
2020
- 2020-10-13 CN CN202011089965.4A patent/CN112196456A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM466968U (en) * | 2013-05-10 | 2013-12-01 | Jun-Han Huang | Anti-theft escape ladder |
| CN206144453U (en) * | 2016-11-03 | 2017-05-03 | 温州华隆建设有限公司 | Municipal works construction is with inspection shaft ladder and inspection shaft structure |
| CN208023614U (en) * | 2017-11-10 | 2018-10-30 | 国网江苏省电力公司泰州供电公司 | A kind of pipeline or well head overhaul closing cap |
| CN208792369U (en) * | 2018-05-24 | 2019-04-26 | 宁波华科道路设施有限公司 | A kind of inspection shaft |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023204716A1 (en) * | 2022-04-21 | 2023-10-26 | Sveinung Lein | Device for securing an object to a frame for a manhole cover |
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Application publication date: 20210108 |