CN111350454A - Foldable telescopic turning ladder - Google Patents
Foldable telescopic turning ladder Download PDFInfo
- Publication number
- CN111350454A CN111350454A CN201811578329.0A CN201811578329A CN111350454A CN 111350454 A CN111350454 A CN 111350454A CN 201811578329 A CN201811578329 A CN 201811578329A CN 111350454 A CN111350454 A CN 111350454A
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- Prior art keywords
- sliding
- ladder
- parallel
- translation
- connecting plate
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- 230000007246 mechanism Effects 0.000 claims abstract description 20
- 239000011324 bead Substances 0.000 claims description 8
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000002441 reversible effect Effects 0.000 claims 5
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000009194 climbing Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000007306 turnover Effects 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
Images
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
-
- 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
-
- 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
- E06C7/08—Special construction of longitudinal members, or rungs or other treads
- E06C7/082—Connections between rungs or treads and longitudinal members
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06C—LADDERS
- E06C7/00—Component parts, supporting parts, or accessories
- E06C7/48—Ladder heads; Supports for heads of ladders for resting against objects
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ladders (AREA)
Abstract
A foldable telescopic overturning ladder comprises four vertical columns and a plurality of translation pedals, wherein the upper ends of the four vertical columns are hinged with two fixed longitudinal vertical connecting plates, a transverse connecting piece is fixedly connected between the two fixed longitudinal vertical connecting plates, and the translation pedals are sequentially hinged with the four vertical columns to form a sliding overturning ladder consisting of parallel connecting rod mechanisms; the sliding nut is fixedly connected with the outer side of the fixed longitudinal vertical connecting plate respectively, the two sliding rails are inserted into the sliding nut in a sliding mode, the two sliding rails are parallel to each other, and two ends of each sliding rail are arranged on the sliding rail fixing seats to form parallel sliding rail groups. The parallelogram mechanism of the invention is skillfully applied, facilitates the unfolding and folding of the sliding and overturning ladder, realizes the rapid stretching and retracting of the sliding and overturning ladder by adopting the sliding pair of the parallel slide rail group, and has the characteristics of convenient unfolding, folding together after folding, small volume, convenient arrangement in a narrow space position and the like.
Description
Technical Field
The invention relates to a ladder.
Background
When the ladder needs to climb to a certain height from the ground, the straight ladder is often fixed, the straight ladder is made into a retractable mode capable of being drawn out, and the straight ladder is made into a herringbone climbing ladder. The foldable parallelogram structure herringbone ladder is further used for being stored and used independently, the herringbone ladder is simple in structure, small in occupied space and convenient to embed, the standing is not stable when climbing and stepping, the standing stability problem when climbing and stepping is solved by the herringbone ladder part, the problems of large storage space and container fixing need to be considered when the herringbone ladder is stored and used, particularly, when the herringbone ladder is used in the field and is removed, the storage is lost and forgotten, the occupied space is large, and the phenomenon of loss is caused by forgetting to store after the herringbone ladder is frequently used.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a foldable telescopic overturning ladder fixed with a shelter, which is convenient to unfold and fold, has small folded volume, is convenient to embed in a narrow space position, is convenient to use, can be unfolded quickly, and can be folded quickly and conveniently without being lost easily.
The technical scheme of the invention is as follows: the ladder comprises four upright posts and a plurality of translation pedals, wherein the upper ends of the four upright posts are hinged with two fixed longitudinal vertical connecting plates, a transverse connecting piece is fixedly connected between the two fixed longitudinal vertical connecting plates, and the translation pedals are sequentially hinged with the four upright posts to form a sliding overturning ladder consisting of parallel link mechanisms; the sliding nut is fixedly connected with the outer side of one longitudinal end of the fixed longitudinal vertical connecting plate respectively, the two sliding rails are inserted into the sliding nut in a sliding mode and are parallel to each other, and two ends of each sliding rail are installed on the sliding rail fixing seats to form parallel sliding rail sets.
The fixed longitudinal vertical connecting plate is of an inverted U-shaped groove structure, hinge holes are formed in two sides of an opening at the lower end of the fixed longitudinal vertical connecting plate, a plurality of through holes are sequentially formed in the stand column along the length direction, the through hole at the upper end of the stand column corresponds to the hinge hole of the fixed longitudinal vertical connecting plate, the upper end of the stand column is inserted into the opening of the fixed longitudinal vertical connecting plate, four stand columns are hinged to form a parallel connecting rod mechanism after being hinged through a first pin shaft arranged at the hinge hole and the through hole at the upper end of the stand column, the parallel connecting rod mechanism can turn downwards along the hinge hole, mounting holes corresponding to the through holes are formed in two end portions of the. The hinge holes at two sides of the lower end opening of the fixed vertical connecting plate are higher and lower, the hinge hole at one side is higher, and the hinge hole at the other side is lower.
The transverse edge of the bottom translation pedal is provided with a ladder handle.
The transverse connecting piece comprises a transverse connecting plate and a transverse connecting rod; a step ladder clamping device matched with the transverse connecting rod is arranged between the two slide rail fixing seats; the step ladder clamping device comprises a clamping seat and paired compression spring collision beads arranged on the clamping seat, and the paired compression spring collision beads correspond to the transverse connecting rods. The card seat is vertical to the sliding direction of the sliding rail.
The translation pedal is a cover-shaped structure consisting of a flat plate and 4 vertical plates connected to the periphery of the flat plate.
The thickness of the translational pedal is less than or equal to the height of the fixed longitudinal vertical connecting plate, so that the translational pedal can be conveniently folded and retracted into the platform.
The invention provides: the foldable finger parallel connecting rod mechanisms can be folded together after being turned over; the telescopic finger parallel connecting rod mechanism longitudinally extends and retracts to slide along the parallel sliding rail set; the overturning finger parallel link mechanism overturns and rotates downwards along the longitudinal adapter plate when extending out of the limit position or overturns and rotates upwards when the working state is reset; the step ladder refers to the working state of the step ladder which is formed by downwards turning a translation pedal in a parallel connecting rod mechanism and can be used for climbing.
The sliding and overturning step ladder has the sliding function of longitudinally extending and retracting along the longitudinal parallel slide rail set, and also has the folding function of horizontally turning and rotating the upper top end relatively along the fixed longitudinal vertical connecting plate when extending out of the limit position or turning and rotating the upper top end when climbing to reset in the working state.
The parallelogram mechanism of the invention is skillfully applied, facilitates the unfolding and folding of the sliding and overturning ladder, realizes the rapid stretching and retracting of the sliding and overturning ladder by adopting the sliding pair of the parallel slide rail group, and has the characteristics of convenient unfolding, folding together after folding, small volume, convenient arrangement in a narrow space position and the like.
When the invention is applied to a mobile working platform place in a vehicle-mounted mobile shelter, before the shelter is folded from outside to inside, the sliding turnover ladder in the telescopic turnover ladder is turned over to be horizontal, the parallel connecting rod mechanism is folded and slides along the longitudinal parallel sliding rail set and retracts into the working platform, the transverse connecting rod of the sliding turnover ladder is blocked by the limiting blocking device and is in a collection state, and then the working platform (together with the invention in the platform) is pushed into the shelter and is locked. The invention enters the square cabin along with the working platform and can bear the effects of inclination of the square cabin in the process of being pulled to the plane of the self-loading and unloading vehicle chassis from the ground, jolt in running, acceleration and deceleration, sharp braking and turning inertia and the like in the transportation process. When the parking or the shelter is placed on the ground, and higher articles need to be taken and placed by the working platform or the working platform needs to be stood on the platform for working, the working platform is pulled out from the shelter to be locked at the limit position, and then the working platform is turned downwards after horizontally extending to the limit state along the longitudinal direction of the parallel slide rail group in the platform, so that the working platform can be in a climbing working state from the upper part of a ground pedal to the working platform.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a partial schematic view of the structure of the present invention.
Fig. 3 is a schematic diagram illustrating the process of the invention from the extraction state to the working state.
Detailed Description
In fig. 1, the invention is composed of a slide rail fixing seat 801, a slide rail 802, a slide nut 803, a transverse connecting plate 804, a fixed longitudinal vertical connecting plate 805, a transverse connecting rod 806, a vertical column 807, a translational pedal 808, a ladder handle 809, a ladder clamping device 6010 and the like, which respectively form a parallel slide rail group, two large parts of a slide and turn ladder and the ladder clamping device 6010 to be matched for use.
The slide rails 802 are arranged in parallel, the slide rails 802 are formed by fixedly connecting slide rail fixing seats 801 at two ends of the slide rails with a base body of a working platform (or a rack) to form a longitudinal parallel slide rail group, and the slide rails 802 are arranged in a longitudinal horizontal manner. The step clamping device 6010 is arranged at the end parts of the two slide rail fixing seats 801 and is vertical to the sliding direction of the slide rails, the transverse connecting rod 806 is fixed on the foldable telescopic overturning step, the step clamping device 8010 comprises a clamping seat and paired compression spring collision beads arranged on the clamping seat, and the paired compression spring collision beads correspond to the transverse connecting rod 806. When the ladder is retracted and slides to the bottom, the transverse connecting rod 806 is collided with the collision bead with the compression spring and then enters the collision bead, and the transverse connecting rod 806 is blocked by the stop.
Four square steel tube upright posts 807 are four sides of a parallelogram, two fixed longitudinal vertical connecting plates 805 are arranged at the upper top ends of the four square steel tube upright posts, the four square steel tube upright posts are longitudinally hinged with the two upright posts to form two longitudinal parallel groups respectively, a transverse connecting plate 804 and a transverse connecting rod 806 are arranged and are transversely and fixedly connected with the longitudinal vertical connecting plates of the two longitudinal parallel groups, sliding nuts 803 are respectively and fixedly connected with the outer side of one longitudinal end of the fixed longitudinal vertical connecting plate, a sliding pair is formed by the sliding nuts and sliding rails 802 of the parallel sliding rail groups, and sliding rail fixing seats 801 are arranged at the end. The middle sole part of a parallelogram formed by four upright posts is uniformly transversely arranged by four (or a plurality of) translational pedals 808 and transverse connecting plates 804 which are parallel, the end surfaces of the translational pedals 808 are respectively hinged with the two upright posts of the two groups of longitudinal parallel groups, so that the upper top end is turned and rotated downwards along the fixed longitudinal vertical connecting plates 805 of the longitudinal parallel connecting rod mechanism as shown in the figure, and the translational pedals are always parallel to the transverse connecting plates at the upper top end in the turning and rotating process of the parallel connecting rod mechanism because the holes at the end surfaces of the translational pedals 808 and the holes of the fixed longitudinal vertical connecting plates are consistent; ladder handles 809 are arranged at the transverse edges of the bottom translation pedal.
When the foldable parallel linkage mechanism is folded and slides to a retracted and stored state in a working platform, the telescopic turnover ladder is pulled outwards by hand holding the ladder handle 809 forcibly and longitudinally, after the ladder is released from a clamping device of the turnover ladder just when being pulled, the ladder slides and extends longitudinally along the parallel slide rail group, and is continuously and slowly pulled out to a longitudinal horizontal extension extreme position, the parallel linkage mechanism turns and rotates the parallel linkage along the fixed longitudinal vertical connecting plate 805 to be folded and slowly unfolded to a climbing and stepping working state, the translational pedal 808 is always in translational motion in the turning and rotating process, and simultaneously the opposite columns rotate, namely, the plane of the translational pedal 808 is parallel to the guide rails of the horizontal guide rail group. The invention is in the climbing working state after being overturned in the longitudinal horizontal extension limit state, can be developed for people to climb; and the other function is that the small-sized equipment is moved to the working platform from the ground or moved to the up-and-down rotary carrying equipment from the working platform from the ground by turning the parallelogram linkage mechanism by utilizing the characteristic that the translation pedal is always in translation in the turning process of the parallelogram linkage mechanism.
In fig. 3, the working process of the present invention is: (initially) a folding and retracting storage state of the parallel link mechanism after being folded, a longitudinal horizontal extending process along the parallel slide rail group, a longitudinal horizontal extending limit state, a downward overturning and slowly opening process of the parallel link mechanism after being folded, and a climbing working state after being overturned at the longitudinal horizontal extending limit state.
Claims (6)
1. The utility model provides a collapsible flexible upset ladder which characterized in that: the device comprises four upright posts (807) and a plurality of translation pedals (808), wherein the upper ends of the four upright posts are hinged with two fixed longitudinal vertical connecting plates (805), a transverse connecting piece is fixedly connected between the two fixed longitudinal vertical connecting plates (805), and the plurality of translation pedals (808) are sequentially hinged with the four upright posts to form a parallel connecting rod mechanism; the sliding nut (803) is respectively fixedly connected with the outer side of the fixed vertical connecting plate (805), the two sliding rails (802) are inserted into the sliding nut (803) in a sliding mode, the two sliding rails (802) are parallel to each other, and two ends of the sliding rails (802) are installed on the sliding rail fixing seat (801) to form a parallel sliding rail set.
2. The foldable, telescopic and reversible ladder of claim 1, wherein: the fixed vertical connecting plate (805) is of an inverted U-shaped groove structure, hinge holes are formed in two sides of an opening at the lower end of the fixed vertical connecting plate (805), a plurality of through holes are sequentially formed in the vertical column (807) along the length direction, the through holes in the upper end of the vertical column (807) correspond to the hinge holes in the fixed vertical connecting plate (805), the upper end of the vertical column (807) is inserted into the opening of the fixed vertical connecting plate (805) and hinged through a first hinge pin arranged at the hinge holes and the through holes in the upper end of the vertical column (807), mounting holes corresponding to the through holes are formed in two peripheral end portions of the translation pedal (808), the translation pedal (808) is inserted into the mounting holes, and a second hinge pin arranged at the through.
3. The foldable, telescopic and reversible ladder of claim 1, wherein: ladder handles (809) are arranged at the transverse edges of the bottom translation pedal.
4. The foldable, telescopic and reversible ladder of claim 1, wherein: the cross connecting piece comprises a cross connecting plate (804) and a cross connecting rod (806); a step clamping device (6010) matched with the transverse connecting rod (806) is arranged between the two slide rail fixing seats (801); the step ladder clamping device (6010) comprises a clamping seat and paired compression spring collision beads arranged on the clamping seat, and the paired compression spring collision beads correspond to the transverse connecting rod (806).
5. The foldable, telescopic and reversible ladder of claim 1, wherein: the translation pedal (808) is a cover-shaped structure consisting of a flat plate and 4 vertical plates connected to the periphery of the flat plate.
6. The foldable, telescopic and reversible ladder of claim 1, wherein: the thickness of the translational pedal (808) is less than or equal to the height of the fixed longitudinal vertical connecting plate (805).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811578329.0A CN111350454A (en) | 2018-12-24 | 2018-12-24 | Foldable telescopic turning ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811578329.0A CN111350454A (en) | 2018-12-24 | 2018-12-24 | Foldable telescopic turning ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111350454A true CN111350454A (en) | 2020-06-30 |
Family
ID=71191925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811578329.0A Pending CN111350454A (en) | 2018-12-24 | 2018-12-24 | Foldable telescopic turning ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111350454A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202338197U (en) * | 2011-12-12 | 2012-07-18 | 辽宁省电力有限公司锦州供电公司 | Elevating crawling ladder of electric pole |
| CN203129938U (en) * | 2013-03-19 | 2013-08-14 | 南华大学 | Drawing foldable boarding ladder |
| CN205605105U (en) * | 2016-04-28 | 2016-09-28 | 孙柏强 | Over -and -under type safety cat ladder |
| CN206468288U (en) * | 2017-02-22 | 2017-09-05 | 江苏海阳电力设备有限公司 | Electrical pole ladder |
| CN209670880U (en) * | 2018-12-24 | 2019-11-22 | 湖北三六一一特种装备有限责任公司 | Foldable telescopic overturns step |
-
2018
- 2018-12-24 CN CN201811578329.0A patent/CN111350454A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202338197U (en) * | 2011-12-12 | 2012-07-18 | 辽宁省电力有限公司锦州供电公司 | Elevating crawling ladder of electric pole |
| CN203129938U (en) * | 2013-03-19 | 2013-08-14 | 南华大学 | Drawing foldable boarding ladder |
| CN205605105U (en) * | 2016-04-28 | 2016-09-28 | 孙柏强 | Over -and -under type safety cat ladder |
| CN206468288U (en) * | 2017-02-22 | 2017-09-05 | 江苏海阳电力设备有限公司 | Electrical pole ladder |
| CN209670880U (en) * | 2018-12-24 | 2019-11-22 | 湖北三六一一特种装备有限责任公司 | Foldable telescopic overturns step |
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