CN102966300B - Lifting ladder - Google Patents
Lifting ladder Download PDFInfo
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- CN102966300B CN102966300B CN201210483101.XA CN201210483101A CN102966300B CN 102966300 B CN102966300 B CN 102966300B CN 201210483101 A CN201210483101 A CN 201210483101A CN 102966300 B CN102966300 B CN 102966300B
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Abstract
The invention provides a lifting ladder which is a technical solution aiming at the problems that the existing ladder is unsafe and inconvenient, and is low in construction efficiency when being used in working environments such as tunnels. The lifting ladder comprises a main ladder and a drawing auxiliary ladder, wherein the drawing auxiliary ladder can extend upwards along the track of the main ladder and is divided into an upper auxiliary ladder and a lower auxiliary ladder, and a tensioning device formed by a connecting screw rod is arranged between the upper auxiliary ladder and the lower auxiliary ladder. The lifting ladder can rotate by utilizing the connecting screw rod which is used for connecting the upper drawing auxiliary ladder with the lower drawing auxiliary ladder, and can be tensioned in the whole height direction by utilizing the jack principle. When being used in a tunnel and similar places the tops of which are provided with barriers, the ladder is very stable, safe and convenient, so that manpower resources for supporting the ladder can be reduced, and the working efficiency can be improved.
Description
Technical field
The present invention relates to construction tool, specifically a kind of lifting ladder, this lifting ladder can use in railway electrification construction, also can use in common building, electrical construction.
Background technology
Ladder is a kind of ancient and instrument of youth, say he ancient be because: its use can be traced back to the mankind and be settled down the epoch, at the beginning of starting to build house; Say its youth be because: in the current modernization epoch, encounter the various difficult problem having " highly ", people are also using it to solve problem in large quantities.Instrument in the world, profile and function change little for thousands of years, and no matter how science and technology improves, and be not eliminated, ladder should be that head ought be wherein always! It is very large to mankind's contribution! Ladder can extend the height of the mankind.
In life, in various work and construction, we are using ladder in a large number.Especially railway electrification construction field, although there has been the high-altitude operations tool of many such as hydraulic construction platform one classes, but because their use needs specific traffic, electric circumstance condition, so much there is the problem of " highly " must use conventional elevator subsolution certainly in the air.
As you know in railway electrification construction operation ladder use height between high-tension electricity construction usage height and civilian use height.Highly higher owing to using for high-tension electricity construction, in order to ensure safety, had some special ladders or special instrument: a kind of anti-drop insulating ladder head of such as patent CN201705195U invention, for ladder is suspended on wire safely, bottom connects rope ladder.For the civilian use height of ladder in order to ensure safety, ladder manufacturer develops the novel product of many such as lifts, double ladder, A word ladder; Ladder researcher also have various patents for solve existing ladder use time safety, convenience problem.
For railway electrification construction operation, above-mentioned two class ladders, instrument are all in use, but because of its special height and Special use environment, as in the environment such as electric pole, tunnel, these ladders, instrument all also also exist dangerous or inconvenient problem, in order to safety generally needs other staff to hold up ladder, lessen efficiency of construction like this.
Summary of the invention
Object of the present invention is exactly the problem dangerous, inconvenient when using in the operating environments such as tunnel around existing ladder, efficiency of construction is low, and provide a kind of technical solution being elevated ladder, this lifting ladder can be fastened on job site after extension further.
A kind of lift provided by the invention, comprise main terraced 1 and extraction ladder, the sub-ladder of described extraction upwards can extend along the track of main ladder, it is characterized in that, the sub-ladder of described extraction is divided into son ladder and lower son ladder, and arranges tightening device between upper and lower sub-ladder, this tightening device has enough support forces can be made between whole ladder fastens well ground at the construction field (site) and end face, constructor can on ladder safe construction, so just eliminate the manpower of staircase, improve efficiency of construction.
Described tightening device comprises the connection wire rod be arranged between upper and lower sub-ladder, be arranged on the circular hole that the terraced bottom rail of son takes advantage of (horizontal taking advantage of is pedal) central part bit strip screw thread, with the upper horizontal cone hole, garden taking advantage of centre being arranged on lower son ladder, connection wire rod is screwed in the circular hole of band screw thread and connects upper son ladder, connection wire rod bottom be pyramid type and bottom with latch gear, lower son ladder is connected by cone hole, garden, handle is arranged at connection wire rod top, turning handle connection wire rod just can make the relatively lower sub-ladder of sub-ladder make stretching motion, and then reaches stretching or loosen the object of whole ladder.
Described tightening device can also be made up of the jack be arranged between upper and lower sub-ladder.
The top of lift of the present invention can also arrange electric pole retaining mechanism, namely on the top pedal of upper son ladder, is provided with that horizontal level can move, the tight latch mechanism of the rotary electric pole of vertical direction.
Described electric pole retaining mechanism, comprise pole ring and pull bar and lock box, pole ring one end is semi-circular, for holding electric pole tightly, the other end is cylindrical, which is provided with the circular hole of band screw thread, pull bar epimere is one section of steel pipe, hypomere is filled circles steel column (bar), has handle bottom it, pull bar epimere steel pipe has circular opening (groove), pull bar epimere steel pipe is inserted in the cylindrical one end of pole ring, be screwed into screw by circular hole, circular opening (groove), pole ring is connected with pull bar, and pull bar can rotate relative to pole ring within the scope of 90 degree upon connection; Zigzag pawl is had in the one side of pull bar hypomere filled circles steel column (bar), there are two relative tie rod holes on the two sides, front and back of locking box, inside have pawl ejector pin, pull bar is by two tie rod holes through locking box, and pawl ejector pin coordinates the position of lockable pull bar with zigzag pawl.
There are two relative installing holes on the two sides, left and right of tight lock box, realizes moving horizontally and vertical rotary of tight latch mechanism during for being arranged on ladder top.
The main terraced bipod of lift of the present invention is provided with foot of ladder levelling gear, in upper son ladder two vertical rod upper ends, top levelling gear is installed.
Lift of the present invention, son ladder two vertical rods thereon can also arrange the safety belt installing hole of multiple equidistant symmetry, in order to fixing safety belt.
Compared with prior art the present invention has the following advantages and effect
The present invention extracts upper son ladder and the connection screw turns of lower son ladder out by connecting, and utilizes jack principle, can make whole ladder stretching in the height direction.When ladder has the similar applications of obstacle to use in tunnel and top, ladder is very firm, and safe ready, can reduce staircase manpower, increase work efficiency.
The present invention is by the tight latch mechanism in top, and when making ladder be applied in electric pole and similar applications, electric pole top and ladder upper section are tightly locked, and safe ready is increased work efficiency.
The present invention, by the levelling gear of ladder top and the bottom, can make ladder in use, do not need levelling to ground end face, level up, only need to carry out some adjustment to levelling gear, just can adapt to various ground end face situation, thus increase work efficiency and safety.
That the present invention is installed by top son ladder, position-movable safety belt, can ensure the safety of constructor in constructing operation (exerting oneself) process further.
The present invention gives a kind of technical scheme of the ladder used in electric pole or tunnel.It solve ladder dangerous, inefficient problem when railway electrification construction operation uses.It also can be widely used in other similar occasions of environment for use, as builing industry interior decoration etc. simultaneously.
Accompanying drawing explanation
A kind of lift minor structure of Fig. 1 the present invention schematic diagram
In figure: the main ladder of 1-, the upper son ladder of 2-, son ladder under 3-, 4-connection wire rod, 5-circular hole, cone hole, 6-garden, 7-latch gear, 8-handle, 9-electric pole retaining mechanism, 10-foot of ladder levelling gear, 11-top levelling gear, 12-safety belt installing hole, 13-safety belt.
Fig. 2 is elevated the tight latch mechanism of electric pole and the modular construction schematic diagram thereof of ladder
In figure: 14-pole ring, 15-pull bar, 16-locks box, 17-circular hole, 18-circular opening (groove), 19-handle, 20-zigzag pawl, 21-pawl ejector pin, 22-tie rod hole, 23-installing hole.
Detailed description of the invention
A kind of lifting ladder, as shown in Figure 1, comprise main terraced 1 and extraction ladder, the sub-ladder of described extraction upwards can extend along the track of main ladder, the sub-ladder of described extraction is divided into son ladder 2 and lower son ladder 3, and tightening device is set between upper and lower sub-ladder, described tightening device comprises the connection wire rod 4 be arranged between upper and lower sub-ladder, be arranged on the circular hole 5 that the terraced bottom rail of son takes advantage of (horizontal taking advantage of is pedal) central part bit strip screw thread, with the upper horizontal cone hole, garden 6 taking advantage of centre being arranged on lower son ladder, connection wire rod 4 is screwed in the circular hole 5 of band screw thread and connects upper son ladder, connection wire rod 4 bottom be pyramid type and bottom with latch gear 7, lower son ladder is connected by cone hole 6, garden, handle 8 is arranged at connection wire rod 4 top, turning handle 8 connection wire rod just can make the relatively lower sub-ladder of sub-ladder make stretching motion, and then reach stretching or loosen the object of whole ladder.The top of lifting ladder also arranges electric pole retaining mechanism 9, namely on the top pedal of upper son ladder, is provided with that horizontal level can move, the tight latch mechanism of the rotary electric pole of vertical direction.Described electric pole retaining mechanism (as Fig. 2), comprise pole ring 14 and pull bar 15 and lock box 16, pole ring 14 one end is semi-circular, for holding electric pole tightly, the other end is cylindrical, which is provided with the circular hole 17 of band screw thread, pull bar 15 epimere is one section of steel pipe, hypomere is filled circles steel column (bar), handle 19 is had bottom it, pull bar epimere steel pipe there is circular opening (groove) 18, pull bar 15 epimere steel pipe is inserted in the cylindrical one end of pole ring 14, by circular hole 17, circular opening (groove) 18 is screwed into screw, pole ring 14 is connected with pull bar 15, and pull bar 15 can rotate relative to pole ring 14 within the scope of 90 degree upon connection, zigzag pawl 20 is had in the one side of pull bar 15 hypomere filled circles steel column (bar), there are two relative tie rod holes 22 on the two sides, front and back of locking box 16, inside there is pawl ejector pin 21, pull bar 15 is by two tie rod holes 22 through locking box 16, and pawl ejector pin 21 coordinates the position of lockable pull bar 15 with zigzag pawl 20.There are two relative installing holes 23 on the two sides, left and right of tight lock box 16, realizes moving horizontally and vertical rotary of tight latch mechanism 9 during for being arranged on ladder top.The main terraced bipod of lifting ladder is provided with foot of ladder levelling gear 10, in upper son ladder two vertical rod upper ends, top levelling gear 11 is installed, when using ladder, can not need ground by them and top is levelling levels up, only need to carry out some adjustment to levelling gear, just can adapt to various ground end face situation, thus increase work efficiency and safety.Two vertical rods of upper son ladder arrange the safety belt installing hole 12 of multiple equidistant symmetry, in order to fixing safety belt 13.
Another kind of tightening device described in embodiment is made up of the jack be arranged between upper and lower sub-ladder.
Another embodiment does not arrange electric pole retaining mechanism 9 on the top of lift.Can special in tunnel, interior of building construction etc.
Claims (4)
1. a lifting ladder, comprise main ladder (1) and extract son ladder out, the sub-ladder of described extraction upwards can extend along the track of main ladder, it is characterized in that, the sub-ladder of described extraction is divided into son ladder (2) and lower son ladder (3), and arranges tightening device between upper and lower sub-ladder;
Described tightening device comprises the connection wire rod (4) be arranged between upper and lower sub-ladder, the bottom rail being arranged on son ladder takes advantage of the circular hole (5) of central part bit strip screw thread, and is arranged on the upper horizontal circular cone hole (6) taking advantage of centre of lower son ladder; Connection wire rod (4) is screwed in the circular hole (5) of band screw thread and connects upper son ladder (2), connection wire rod (4) bottom is that pyramid type also with latch gear (7), connects lower son terraced (3) by circular cone hole (6) in bottom; Handle (8) is arranged at connection wire rod (4) top, turns handle (8) connection wire rod and the relatively lower sub-ladder of sub-ladder just can be made to make stretching motion;
The top of described lifting ladder arranges electric pole retaining mechanism (9);
Described electric pole retaining mechanism (9), comprise pole ring (14) and pull bar (15) and lock box (16), pole ring (14) one end is semi-circular, for holding electric pole tightly, the other end is cylindrical, which is provided with the circular hole (17) of band screw thread, pull bar (15) epimere is one section of steel pipe, hypomere is filled circles steel column, handle (19) is had bottom it, pull bar epimere steel pipe there is circular opening (18), pull bar (15) epimere steel pipe is inserted in the cylindrical one end of pole ring (14), by circular hole (17), circular opening (18) is screwed into screw, pole ring (14) is connected with pull bar (15), and pull bar (15) can rotate relative to pole ring (14) within the scope of 90 degree upon connection, zigzag pawl (20) is had in the one side of pull bar (15) hypomere filled circles steel column, there are two relative tie rod holes (22) on the two sides, front and back of locking box (16), inside there is pawl ejector pin (21), pull bar (15) is by two tie rod holes (22) through locking box (16), and pawl ejector pin (21) coordinates the position of lockable pull bar (15) with zigzag pawl (20), there are two relative installing holes (23) on the two sides, left and right of locking box (16).
2. a kind of lifting ladder as claimed in claim 1, it is characterized in that, described tightening device is made up of the jack be arranged between upper and lower sub-ladder.
3. a kind of lifting ladder as claimed in claim 1 or 2, is characterized in that, the main terraced bipod of described lifting ladder is provided with foot of ladder levelling gear (10), is provided with top levelling gear (11) in upper son ladder two vertical rod upper ends.
4. a kind of lifting ladder as claimed in claim 1 or 2, is characterized in that, upper son ladder two vertical rods of described lifting ladder is arranged the safety belt installing hole (12) of multiple equidistant symmetry, in order to fixing safety belt (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210483101.XA CN102966300B (en) | 2012-11-23 | 2012-11-23 | Lifting ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210483101.XA CN102966300B (en) | 2012-11-23 | 2012-11-23 | Lifting ladder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102966300A CN102966300A (en) | 2013-03-13 |
| CN102966300B true CN102966300B (en) | 2015-04-15 |
Family
ID=47796706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210483101.XA Active CN102966300B (en) | 2012-11-23 | 2012-11-23 | Lifting ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102966300B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165570A (en) * | 2017-07-07 | 2017-09-15 | 苏剑锋 | A kind of modular long ladder |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191119706A (en) * | 1911-09-05 | 1912-06-06 | Fred Evered Smith | Improvement in Extension Ladder. |
| CN2049672U (en) * | 1989-01-21 | 1989-12-20 | 黄志斌 | Three-purpose portable ladder |
| DE3937566A1 (en) * | 1989-11-11 | 1991-05-16 | Kalisch Geb Heil Edith | Platform of adjustable height for use in home - has screwed spindles driven from electric motor, e.g. for opening-closing curtains |
| CN2303925Y (en) * | 1997-05-28 | 1999-01-13 | 陈芳祖 | Quick-lifting superlong aluminium-alloy ladder |
| CN2331647Y (en) * | 1998-04-21 | 1999-08-04 | 王朝中 | Jack |
| CN201695933U (en) * | 2010-04-02 | 2011-01-05 | 刘金侠 | Steady ladder |
| CN202531003U (en) * | 2012-02-27 | 2012-11-14 | 广东高登铝业有限公司 | Ladder with extensible length |
| CN203050474U (en) * | 2012-11-23 | 2013-07-10 | 山西大学 | Lifting ladder for tunnel |
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2012
- 2012-11-23 CN CN201210483101.XA patent/CN102966300B/en active Active
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| Publication number | Publication date |
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| CN102966300A (en) | 2013-03-13 |
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