CN203808812U - Retractable multi-functional ladder - Google Patents
Retractable multi-functional ladder Download PDFInfo
- Publication number
- CN203808812U CN203808812U CN201420206887.5U CN201420206887U CN203808812U CN 203808812 U CN203808812 U CN 203808812U CN 201420206887 U CN201420206887 U CN 201420206887U CN 203808812 U CN203808812 U CN 203808812U
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- cross beam
- telescopic
- inner frame
- outside
- longeron
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Abstract
The utility model discloses a retractable multi-functional ladder. The retractable multi-functional ladder comprises an outer frame, an inner frame, a locking device, a telescopic device and limiting sites of two regulating handles, wherein the outer frame is composed of a left first longitudinal beam, a right first longitudinal beam, and a plurality of first cross beams between the left first longitudinal beam and the right first longitudinal beam; the inner frame is composed of a left second longitudinal beam, a right second longitudinal beam, and a plurality of second cross beams fixedly arranged on the left and right second longitudinal beams; the locking device is arranged on a second cross beam at the bottom of the inner frame; the telescopic device is arranged in a second cross beam at the top of the inner frame; the limiting sites of the two regulating handles are arranged on the two sides of the second cross beam at the top, respectively. Due to the changeable height, the retractable multi-functional ladder disclosed by the utility model is suitable for a user to have high-place operation in places different in height and also can be changed into a herringbone ladder according to the needs of the user.
Description
Technical field
The utility model relates to a kind of step ladder.
Background technology
Ladder, as daily life tools, does limit by two thick bar, and scansorial cross bar is crossed in centre, for climbing.But the height of ladder is fixing often, user can not carry out high-rise working in various differing heights and the various difference occasion of ascending a height.In addition, common ladder can only be fixed against on side wall and could use, if there is no the position that can rely on, just can not use, so the occasion of use is more single, and the transport of too high ladder is extremely inconvenient.
Although need not rely on side wall for double ladder, can be used alone, because it is height-limited, that can not climb is too high, and its volume is large, and transport floor space is large, and transport is very inconvenience also.
Utility model content
The technical problems to be solved in the utility model, is to provide a kind of telescopic multifunctional ladder, its alterable height, be applicable to user and carry out high-rise working in highly different occasions, and can be deformed into into as required double ladder, do not rely on side wall also can use, function is many, easy to use.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of telescopic multifunctional ladder, comprises outside framework and inner frame,
Outside framework, is made up of left and right the first longeron and multiple first crossbeams of being fixed between this left and right first longeron;
Inner frame, is made up of left and right the second longeron and the multiple second cross beams that are fixed on this left and right second longeron;
Locking system, is arranged on described inner frame second cross beam bottom;
Stretching device, be arranged in the top second cross beam of described inner frame, this stretching device comprises the telescopic unit of the middle both sides of top second cross beam, this telescopic unit from the outer end of described top second cross beam to third side can be along being arranged on the telescopic shaft that the guide hole in the second cross beam of top moves to being provided with successively, the inner of telescopic shaft release handle that is connected, release handle the inner spring that is connected;
The spacing position of two release handles, be arranged at respectively the both sides of top second cross beam, when release handle is positioned at outside spacing when position, telescopic shaft is through in the axis hole that the first longeron top is provided with, in the time that release handle is positioned at inner side limiting-position position, telescopic shaft inside contracts and is positioned at outside the axis hole that first crossbeam top is provided with.
As to further restriction of the present utility model, described locking system comprises the locking unit at described second cross beam two ends, and this locking unit comprises the latch being connected on this second cross beam, is fixed on the restriction protrusion that on this second cross beam, limitation lock stops moves.
As to further restriction of the present utility model, described latch is provided with the first lockup arm, the second lockup arm, and the cambered surface that the handing-over place between this first lockup arm, the second lockup arm forms is suitable with the cambered surface that described first crossbeam contacts with it.
As to further restriction of the present utility model, be provided with suspension ring in the middle of top first crossbeam, in suspension ring, be hinged with pulley.Centre at described inner frame second cross beam is bottom fixed with pedestal, and pull rope one end is fixed on pedestal, and the other end passes through pulley, vertical ground.
As to further restriction of the present utility model, the spacing position in described inner side limiting-position position and outside is respectively the inner side of driveing on the wall of the both sides of top second cross beam and the first stopper slot and second stopper slot in outside.
As to further restriction of the present utility model, between described outside framework and inner frame, be also provided with safety rope.
Owing to having adopted above-mentioned technical scheme, compared with prior art, obtained technological progress is the utility model:
(1) user can make the height of ladder extend by operation stretching device, when the release handle in telescopic unit is during in inner side limiting-position position, i.e. the first stopper slot, release handle to the effect of spring under, make spring-compressed, and then telescopic shaft is moved in the middle of the second top crossbeam, axis hole is exited in final Inner contracting, now, pulling traction rope, under it drives, inner frame moves upward gradually, in the time moving to needed height, user's operable lock locking apparatus makes latch locking, can carry out high-rise working; In the time that user's operation is complete, operable lock locking apparatus, makes it depart from lockup state, oppositely pulling traction rope, resets inner frame, and release handle is adjusted to spacing position, outside, because of its alterable height, be applicable to user and carry out high-rise working in highly different occasions.
(2) the utility model also can use according to user's the herringbone ladder that need to be transformed to, by operation stretching device, when the release handle in telescopic unit in outside spacing when position, i.e. the second stopper slot, spring to the elastic force effect of release handle under, make telescopic shaft to the second top crossbeam two side shiftings, finally pass through axis hole, now, inner frame can be rotated to an angle taking telescopic shaft as axis, and then form herringbone ladder, with using after safety rope restriction firmly, after finishing using, reverse rotation inner frame makes it recover initial position.
(3) the utility model is simple in structure, easy to operate, uses fast,, when transport, is folded meanwhile, and volume is little, and floor space is little, transports very convenient.
brief description of the drawings
The following drawings is only intended to the utility model to schematically illustrate and explain, does not limit scope of the present utility model.Wherein:
Fig. 1 is the utility model embodiment front view;
Fig. 2 is the enlarged drawing at A place shown in Fig. 1;
Fig. 3 is locking unit schematic diagram in the utility model embodiment;
Fig. 4 is the utility model embodiment elongation state schematic diagram;
Fig. 5 is the utility model embodiment herringbone ladder schematic diagram.
In figure: 1-outside framework, 11-first crossbeam, 111-pedestal, 12-suspension ring, 121-pulley, 13-the first longeron, 14-axis hole, 15-the first top crossbeam, 2-inner frame, 21-second cross beam, 22-latch, 221-the first lockup arm, 222-the second lockup arm, 223-connecting hole, 24-the second top crossbeam, 241-telescopic shaft, 242-release handle, 243-spring, 244-the first stopper slot, 245-the second stopper slot, 246-guide hole, 25-the second longeron, 3-pull rope, 4-safety rope.
Detailed description of the invention
Below in conjunction with drawings and Examples, further set forth the utility model.In the following detailed description, only by the mode of explanation, some example embodiment of the present utility model has been described.Undoubtedly, those of ordinary skill in the art can recognize, in the situation that not departing from spirit and scope of the present utility model, can revise described embodiment by various mode.Therefore, accompanying drawing is illustrative with being described in essence, instead of for limiting the protection domain of claim.
embodiment:as shown in Figures 1 to 5, the present embodiment discloses a kind of telescopic ladder, comprise outside framework 1 and inner frame 2, wherein, outside framework 1 is made up of left and right the first longeron 13 and multiple first crossbeam 11, inner frame 2 is made up of left and right the second longeron 25 and multiple second cross beam 21, first crossbeam 11, the first longeron 13, second cross beam 21, the second longeron 25 are preferentially set to tubulose, left and right the first longeron 13 is made up of the longeron of two tubuloses respectively, between these two longerons, form the guide groove that holds multiple second cross beams 21, second cross beam can move up and down in guide groove.
Stretching device, be arranged in the second top crossbeam 24 of inner frame, this the second top crossbeam is also preferentially set to tubulose, this stretching device comprises the telescopic unit that is separately positioned on the middle both sides in the second top crossbeam 24, each telescopic unit from the outer end of this second top crossbeam to third side to being provided with successively telescopic shaft 241, telescopic shaft 241 can pass through or exit the axis hole 14 at the first longeron 13 tops of outside framework 1, the inner of telescopic shaft 241 release handle 242 that is connected, the inner of release handle 242 spring 243 that is connected.Be respectively arranged with the spacing position of two release handles in the both sides of this second cross beam middle, top: inner side limiting-position position i.e. i.e. the second stopper slot 245 in the spacing position of the first stopper slot 244 and outside.In the time that release handle 242 is positioned at the second stopper slot 245, telescopic shaft 241 is through in the axis hole that the first longeron top is provided with, and in the time that release handle 242 is positioned at the first stopper slot 244, telescopic shaft 241 inside contracts and is positioned at outside the axis hole that the first longeron top is provided with.
When the release handle in telescopic unit is during in the first stopper slot 244, release handle to the effect of spring under, make spring-compressed, and then make telescopic shaft to mobile in the middle of the second top crossbeam, finally inside contract and exit axis hole.When the release handle in telescopic unit is during in the second stopper slot 244, spring to the elastic force effect of release handle under, make telescopic shaft to the second top crossbeam two side shiftings, finally pass through axis hole.
Locking system, be arranged on the second cross beam 21 of inner frame 2, be included in the locking unit that the two ends of above-mentioned second cross beam arrange respectively, this locking unit comprises the latch 22 being connected on this second cross beam, this latch 22 is connected with above-mentioned second cross beam 21 by connecting hole 223, and can this second cross beam be that axis rotates in a circumferential direction, also can carry out the movement of horizontal direction, move horizontally distance for limiting it, be provided with to the middle mobile direction of second cross beam the restriction protrusion 23 that is connected in above-mentioned second cross beam at latch, for the first crossbeam locking of better and outside framework, also be provided with the first lockup arm 221, the second lockup arm 222, the cambered surface that handing-over place between them forms is suitable with the cambered surface contacting of first crossbeam with it, to ensure good locking effect.
In order better to realize the flexible of inner frame, also be provided with pull rope 3, its one end is fixed on pedestal 111, this pedestal 111 is connected on first crossbeam 11 bottom, preferentially be arranged at intermediate position, the other end of pull rope 3 is through the interior hinged pulley 121 of the first top crossbeam 15 middle suspension ring 12 of outside framework, vertical ground.By stretching and drawing rope 3, can realize the flexible, convenient to operation of inner frame.
Simultaneously, the present embodiment also can form herringbone ladder, when the release handle in telescopic unit is during in the second stopper slot, spring to the elastic force effect of release handle under, make telescopic shaft to the second top crossbeam two side shiftings, finally pass through axis hole, now, inner frame can be rotated to an angle taking telescopic shaft as axis, this first stopper slot, the second stopper slot is preferentially set to the half of the second top crossbeam circumference, when forming herringbone ladder, spacing to carrying out property of its angle, in order to ensure better user's safety, also be provided with safety rope 4, in the time forming herringbone ladder, its angle is limited again with safety rope, guarantee that user uses safely.
The course of work of the utility model embodiment is as follows:
In the time needing the height of ladder to extend, by operation stretching device, when the release handle in telescopic unit is during in inner side limiting-position position, i.e. the first stopper slot, release handle to the effect of spring under, make spring-compressed, and then telescopic shaft is moved in the middle of the second top crossbeam, finally inside contract and exit axis hole, now, pulling traction rope, under it drives, inner frame moves upward gradually, as shown in Figure 3, in the time moving to needed height, operable lock locking apparatus makes latch locking, and user can carry out high-rise working; In the time that user's operation is complete, operable lock locking apparatus, makes it depart from lockup state, and oppositely pulling traction rope resets inner frame, and release handle is adjusted to spacing position, outside.
In the time that needs ladder is worked as the use of herringbone ladder, by operation stretching device, when the release handle in telescopic unit in outside spacing when position, i.e. the second stopper slot, spring to the elastic force effect of release handle under, make telescopic shaft to the second top crossbeam two side shiftings, finally pass through axis hole, now, inner frame can be rotated to an angle taking telescopic shaft as axis, and then form herringbone ladder, with using after safety rope restriction firmly, after finishing using, reverse rotation inner frame makes it recover initial position.
The foregoing is only the schematic detailed description of the invention of the utility model, not in order to limit scope of the present utility model.Any those skilled in the art, is not departing from equivalent variations and the amendment under the prerequisite of design of the present utility model and principle, done, all should belong to the scope of the utility model protection.
Claims (9)
1. a telescopic multifunctional ladder, comprises outside framework and inner frame, it is characterized in that:
Outside framework, is made up of left and right the first longeron and multiple first crossbeams of being fixed between this left and right first longeron;
Inner frame, is made up of left and right the second longeron and the multiple second cross beams that are fixed on this left and right second longeron;
Locking system, is arranged on described inner frame second cross beam bottom;
Stretching device, be arranged in the top second cross beam of described inner frame, this stretching device comprises the telescopic unit of the middle both sides of top second cross beam, this telescopic unit from the outer end of described top second cross beam to third side can be along being arranged on the telescopic shaft that the guide hole in the second cross beam of top moves to being provided with successively, the inner of telescopic shaft release handle that is connected, release handle the inner spring that is connected;
The spacing position of two release handles, be arranged at respectively the both sides of top second cross beam, when release handle is positioned at outside spacing when position, telescopic shaft is through in the axis hole that the first longeron top is provided with, in the time that release handle is positioned at inner side limiting-position position, telescopic shaft inside contracts and is positioned at outside the axis hole that first crossbeam top is provided with.
2. telescopic multifunctional ladder according to claim 1, it is characterized in that: described locking system comprises the locking unit at described second cross beam two ends, this locking unit comprises the latch being connected on this second cross beam, is fixed on the restriction protrusion that on this second cross beam, limitation lock stops moves.
3. telescopic multifunctional ladder according to claim 2, it is characterized in that: described latch is provided with the first lockup arm, the second lockup arm, the cambered surface that the handing-over place between this first lockup arm, the second lockup arm forms is suitable with the cambered surface that described first crossbeam contacts with it.
4. according to the telescopic multifunctional ladder described in claim 1 or 2 or 3, it is characterized in that: the middle at top first crossbeam is provided with suspension ring, in suspension ring, be hinged with pulley; Centre at described inner frame second cross beam is bottom fixed with pedestal, and pull rope one end is fixed on pedestal, and the other end passes through pulley, vertical ground.
5. telescopic multifunctional ladder according to claim 4, is characterized in that: the spacing position in described inner side limiting-position position and outside is respectively the inner side of driveing on the wall of the both sides of top second cross beam and the first stopper slot and second stopper slot in outside.
6. according to the telescopic multifunctional ladder described in claim 1 or 2 or 3, it is characterized in that: the spacing position in described inner side limiting-position position and outside is respectively the inner side of driveing on the wall of the both sides of top second cross beam and the first stopper slot and second stopper slot in outside.
7. telescopic multifunctional ladder according to claim 5, is characterized in that: between described outside framework and inner frame, be also provided with safety rope.
8. telescopic multifunctional ladder according to claim 6, is characterized in that: between described outside framework and inner frame, be also provided with safety rope.
9. according to the telescopic multifunctional ladder described in claim 1 or 2 or 3, it is characterized in that: between described outside framework and inner frame, be also provided with safety rope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420206887.5U CN203808812U (en) | 2014-04-26 | 2014-04-26 | Retractable multi-functional ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420206887.5U CN203808812U (en) | 2014-04-26 | 2014-04-26 | Retractable multi-functional ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203808812U true CN203808812U (en) | 2014-09-03 |
Family
ID=51447585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420206887.5U Expired - Fee Related CN203808812U (en) | 2014-04-26 | 2014-04-26 | Retractable multi-functional ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203808812U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105857517A (en) * | 2016-05-29 | 2016-08-17 | 浙江国际海运职业技术学院 | Multifunctional retractable ladder for ships |
| CN109768486A (en) * | 2019-01-16 | 2019-05-17 | 国网辽宁省电力有限公司鞍山供电公司 | Outdoor Trusses For Transformer Substation crossbeam 10kV disconnecting switch electrification direct-connection device and method |
| CN111042728A (en) * | 2019-12-09 | 2020-04-21 | 国家电网有限公司 | Self-gravity-stabilized steel pipe tower climbing ladder and use method thereof |
| CN113202406A (en) * | 2021-03-25 | 2021-08-03 | 周欣欣 | Supporting structure for electric power overhaul |
-
2014
- 2014-04-26 CN CN201420206887.5U patent/CN203808812U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105857517A (en) * | 2016-05-29 | 2016-08-17 | 浙江国际海运职业技术学院 | Multifunctional retractable ladder for ships |
| CN109768486A (en) * | 2019-01-16 | 2019-05-17 | 国网辽宁省电力有限公司鞍山供电公司 | Outdoor Trusses For Transformer Substation crossbeam 10kV disconnecting switch electrification direct-connection device and method |
| CN109768486B (en) * | 2019-01-16 | 2021-03-16 | 国网辽宁省电力有限公司鞍山供电公司 | Live direct connection device and method for transformer substation outdoor beam 10kV isolating switch |
| CN111042728A (en) * | 2019-12-09 | 2020-04-21 | 国家电网有限公司 | Self-gravity-stabilized steel pipe tower climbing ladder and use method thereof |
| CN113202406A (en) * | 2021-03-25 | 2021-08-03 | 周欣欣 | Supporting structure for electric power overhaul |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20160426 |