CN87204049U - Folding type ladder - Google Patents
Folding type ladder Download PDFInfo
- Publication number
- CN87204049U CN87204049U CN 87204049 CN87204049U CN87204049U CN 87204049 U CN87204049 U CN 87204049U CN 87204049 CN87204049 CN 87204049 CN 87204049 U CN87204049 U CN 87204049U CN 87204049 U CN87204049 U CN 87204049U
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- ladder
- descending stair
- terraced
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- self
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Abstract
The utility model relates to a folding ladder which can be used as a folding vertical ladder or a folding herringbone ladder. When the folding ladder is used as the folding vertical ladder, the utility model is composed of short ladders. A lower ladder and a middle ladder are connected by a lower and middle ladder connector, and the middle ladder and an upper ladder are connected by a middle and upper ladder connector. The short ladders can be rotated for folding in the connectors. When in use, the utility model can be unfolded and self-locked for connection to form the vertical ladder. A spare ladder is connected with the lower end of the lower ladder to increase the total length of the vertical ladder. When the folding ladder is used as the folding herringbone ladder, an acute angle is kept between the lower ladder of the folding vertical ladder connected with spare ladder and the middle ladder of the folding vertical ladder connected with spare ladder. The middle ladder and the upper ladder are unfolded and self-locked to form the folding herringbone ladder.
Description
The utility model belongs to general ladder.
A kind of drawing ladder is arranged in the existing ladder, and generally it is the two joint ladders of making of timber.Its outside width of going up ladder equals or is slightly smaller than the inboard width of descending stair, and there is guiding device the descending stair inboard, ladder can only be moved up and down in descending stair, and can not overturn.Step at the top of descending stair a pulley is installed on the bar, step in the bottom of last ladder a clamp under shed is installed on the bar, stay cord circularizes and passes pulley and hitch clamp.When the stay cord that on the pulley is not clamp pulled down, the stay cord that hitches clamp then had been with and is being gone up ladder and move upward to desired height, when stopping to draw stay cord, then clamp is stepped on certain joint that last ladder is stuck in descending stair on the bar, ladder can not be glided voluntarily, and having reached raises goes up ladder, increases the purpose of ladder total length.The drawing ladder of this kind is comparatively heavy, and it is bigger to take up space when inconvenience, collection during carrying, and the double as double ladder uses simultaneously.
Also have a kind of double ladder, generally it also is the two joint ladders of making of timber.Tops at two joint ladders are stepped between the bar and are connected with hinge.Make the drift angle between the two joint ladders fixedly become acute angle during work, two joint ladders are combined.It is folding that but two joint ladders can not be gone respectively again, thus still heavy, inconvenience during carrying, it is also bigger to take up space during collection, and can not launch to use as the vertical ladder with this two joints ladder total length simultaneously.
The purpose of this utility model provides a kind of light, simple, foldable ladder of using of the collapsible vertical ladder of double as and collapsible double ladder simultaneously.
Collapsible vertical ladder mainly is made up of descending stair, middle ladder, last ladder and standby ladder, terraced coupling connects descending stair and middle ladder in adopting down, go up terraced and last ladder in the terraced coupling connection in the employing, these two kinds of couplings can make descending stair, middle ladder and go up terraced folding also flexibly and can launch self-locking flexibly.Adopt plug-in type to connect between descending stair and the standby ladder.Length after descending stair and standby ladder connect connects with middle ladder and last ladder and launches equal in length after the self-locking.Not the time spent, standby ladder can be pulled down, can fold up in the connection place, the space of depositing with minimizing and go up ladder, middle ladder and descending stair.When needs the last ladder of folding up, middle ladder and descending stair can be launched when the vertical ladder and by in go up terraced coupling and down in the self-locking device of terraced coupling be locked into vertical ladder, also can load onto the height of standby ladder with the increase ladder.
When collapsible vertical ladder is used as the double ladder use, at first standby ladder is connected on the lower end of descending stair, makes then to keep suitable acute angle between descending stair and the middle ladder, launch ladder and last ladder in the also self-locking, then become double ladder.
Below in conjunction with accompanying drawing the utility model is described in detail:
Situation when earlier the narration foldable ladder is used as collapsible vertical ladder and is used:
Referring to accompanying drawing: Fig. 1 is collapsible vertical ladder schematic diagram.
Descending stair by two descending stairs be responsible for (2), more than two or two step on pipe (4), several triangle gusset plate (3) is welded.Two descending stair person in charges' (2) lower end puts two rubber cases (1).Circular arc will be processed near the position that connects frid (5) bottom in the descending stair person in charge's (2) upper end, and connect frid (5) 1/2 groove depth size places and have pin hole (17) being slightly smaller than from end face, descending stair is responsible for (2) and is connected in to connect in the frid (5) with pin (7) and also can rotates in groove.Step on pipe (4) and descending stair and be responsible between (2) to welding connects, the triangle gusset plate (3) of burn-oning is again reinforced.
In ladder by ladder in two be responsible for (10), step on pipe (9), several triangle gusset plate (3), two transition tube couplings (8) more than two or two is welded.In order to alleviate the weight of vertical ladder, middle ladder is responsible for the caliber of the caliber of (10) less than the descending stair person in charge (2).For the ladder person in charge (10) in connecting well by connection frid (5), pin (7) is responsible for (2) with descending stair, so be welded with transition tube coupling (8) in the middle terraced lower end of being responsible for (10), diameter is identical with the descending stair person in charge (2).Connect frid (5) 1/2 groove depth size places from end face for being slightly smaller than at transition tube coupling (8), have and vertically upwards be equal to or greater than 10 millimeters microscler removable pin nail holes (18), when central ladder overturns on descending stair, with external force and own wt tenesmus, make pin (7) be positioned at the top of movable pin hole (18), thereby the ladder person in charge (10) can connect with the descending stair person in charge (2) in self-locking in making, and can not turn over voluntarily to fall.Circular arc is processed near the position that connects frid (5) bottom in the termination of transition tube coupling (8), and rotate in connecting frid (5) terraced be responsible for (10) in being convenient to.In the ladder upper end of being responsible for (10) have pin hole (22), and the inclined-plane of the oblique mouth of pipe is processed in the end, to alleviate some weight.
In after the descending stair coupling connects frids (5), one and steps on pipe (6) and several triangle gusset plate (3) and weld together by two, add four pins (7) composition.It is used for connecting descending stair and middle ladder.Connect frid (5) and process with channel-section steel, its length is about four times of width, is welded with one in the center that connects frid (5) one sides and steps on pipe (6), and be that length 1/4th places have two pin holes (15), (16) from the termination.Pin (7) both risen anastomosis support again in the ladder and the weight of last ladder, make so the available diameter of pin (7) is equal to or greater than 5 millimeters round steel, make it have certain intensity.Pin (7) not riveting gets too tightly, make descending stair be responsible for (2) and the middle ladder person in charge (10) can relatively rotate.
Last ladder by two go up ladder be responsible for (13), more than two or two step on pipe (9), several triangle gusset plate (3) is welded.The ladder person in charge's (13) upper end puts rubber case (14) on two.Last ladder is responsible for the diameter of (13) and the equal diameters that middle ladder is responsible for (10).The lower end that last ladder is responsible for (13) is processed into circular arc, and have in center of arc and vertically upwards to be equal to or greater than 10 millimeters microscler removable pin holes (19), when last ladder upset is on middle ladder, with external force and own wt tenesmus, make pin (12) be positioned at the top of movable pin hole (19), thereby the ladder person in charge (10) can connect with the last ladder person in charge (13) in self-locking in making, and can not turn over voluntarily to fall.
In go up terraced coupling and form by two identical couplings, they are by two identical connection plectanes (11), pin (12) composition.On connection plectane (11), pin hole (20), (21) are arranged.Connecting plectane (11) is a round plate (also can make other shapes), and wherein the footpath should be equal to or greater than the diameter that ladder is responsible for (13), has pin hole (20), (21) in 1/2 radius.By in go up terraced coupling and can link up middle ladder and last ladder.The available diameter of pin (12) is equal to or greater than 5 millimeters round steel and makes, and makes it have certain intensity, and riveting does not get too tightly simultaneously, and ladder is responsible for (10) and is responsible for (13) with last ladder and can relatively rotates in making.
When descending stair, middle ladder, go up ladder, down in terraced coupling, in go up after terraced coupling processes, with pin (7), (12) above-mentioned each weak point ladder is linked up, then become collapsible vertical ladder.
Referring to Fig. 3, Fig. 3 is a rugosity vertical ladder schematic diagram.When vertical ladder was rugosity, what be welded with on the connection frid (5) of terraced coupling and the connection frid (5) in then descending stepped on pipe (6) in the upper end, during the carrying vertical ladder, can shoulder convenient and strength-saving piggyback stepping on pipe (4).
When using collapsible vertical ladder, make descending stair motionless earlier, middle ladder is up stirred (ladder also stirs thereupon on this moment), borrow the deadweight of middle ladder and last ladder to make its tenesmus with hand to pressing down, then pin (7) is arranged in the top that ladder is responsible for (10) movable pin hole (18), thereby ladder connects with the descending stair self-locking in making, and will go up then to press down after ladder upwards turns over again, make pin (12) be positioned at the top that ladder is responsible for (13) movable pin-and-hole (19), from and make terraced with terraced self-locking connect.The time spent is not made opposite action, has then folded up.
The length of each short ladder should be more or less the same, and ladder connected the length after self-locking is launched in the back during the length after requiring descending stair and standby ladder connecting should equal with last ladder.Below in the pipe (6) of stepping on of terraced coupling be benchmark, by launching shape vertical ladder total length, uniformly up and down step on pipe more than seven or seven.
When the descending stair of collapsible vertical ladder is responsible for the insertion connecting tube (25) of inserting standby ladder in (2), can increase the total length of collapsible vertical ladder.Standby ladder also is a short ladder.
Referring to Fig. 2, Fig. 2 is standby terraced schematic diagram.Standby ladder by two standby ladders be responsible for (24), step on pipe (4), several triangle gusset plate (3), two insertion connecting tubes (25) more than two or two is welded.The external diameter that inserts connecting tube (25) is slightly smaller than or equals the standby ladder person in charge's (24) internal diameter, after the standby ladder of its insertion is responsible for (24), welds them together again.The length of inserting connecting tube (25) is 50 millimeter.The caliber that standby ladder is responsible for (24) is identical with the descending stair person in charge's (2) of the descending stair of the collapsible vertical ladder of Fig. 1 caliber.The lower end that standby ladder is responsible for (24) is with rubber case (1).
The narration foldable ladder is used as the situation that collapsible double ladder uses below.
Referring to Fig. 1, Fig. 2, Fig. 4.Fig. 4 is collapsible double ladder schematic diagram.The insertion connecting tube (25) of standby ladder is inserted the descending stair of collapsible vertical ladder and be responsible in the lower end pipe of (2), make then between descending stair and the middle ladder to keep acute angle, ladder then becomes collapsible double ladder with last ladder in expansion and the self-locking.
The rubber case (1) of at first descending stair of collapsible vertical ladder being responsible for (2) lower end during use takes out, again descending stair being inserted in the insertion connecting tube (25) of standby ladder is responsible in the lower end pipe of (2), behind the ladder in the upset (going up also upset thereupon of ladder), ladder is gone up in upset again, ladder is connected with middle terraced self-locking, and then make between middle ladder and the descending stair in an acute angle, then formed double ladder, again with long rope hook (23) with two corresponding levels of middle ladder and descending stair step on pipe (4), (9) are associated in together, and the drift angle of collapsible double ladder can not be increased voluntarily.The time spent is not done opposite action, is about to standby ladder and takes out, and folds collapsible vertical ladder, with long rope hook standby ladder bundle is hung on the collapsible vertical ladder then, makes it to become one.
The utility model has the advantages that can fold, lightly, floor space is little with the space during convenient when using or moving, storage, because the tubing that adopts is all shorter, can utilize waste and scrap to process, so cost is lower.
The utility model is practically applicable to family, if do longerly also applicable to departments such as shop, factories.
Below accompanying drawing is briefly explained:
Fig. 1: collapsible vertical ladder schematic diagram.(1) rubber case wherein, (2) descending stair is responsible for, (3) triangle gusset plate, (4) step on pipe, (5) connect frid, and (6) step on pipe, (7) pin, (8) transition tube coupling, (9) step on pipe, (10) ladder is responsible in, and (11) connect plectane, (12) pin, (13) go up ladder and be responsible for (14) rubber case, (15), (16), (17) pin hole, (18), (19) movable pin hole, (20), (21), (22) pin hole, (23) long rope hook.
Fig. 2: standby terraced schematic diagram.Wherein (24) standby ladder is responsible for, and (25) insert connecting tube.
Fig. 3, rugosity vertical ladder schematic diagram.
Fig. 4: collapsible double ladder schematic diagram.
Claims (3)
1, a kind of foldable ladder that comprises that short ladder of several joints and coupling are formed is characterized in that:
A, short ladder comprise descending stair, middle ladder, go up ladder and standby ladder, ladder during terraced coupling connected one during the upper end of descending stair was passed through down, going up one of terraced coupling connection during the upper end of middle ladder is passed through goes up terraced, become vertical ladder after coupled descending stair, middle ladder and upward terraced expansion and the self-locking, below vertical ladder, also can connect a standby ladder that can increase vertical ladder length and can form double ladder;
Rise between b, descending stair and the middle ladder and connect and self-locking action can make their rotate terraced coupling in fold following again, it is by connecting frid (5), stepping on pipe (6) and pinning (7) is formed.Connect on the frid (5) pin hole (15), (16) are arranged;
Rise between c, middle ladder and the last ladder connect and self-locking action can make again their rotate fold in go up terraced coupling, it is formed by connecting plectane (11) and pin (12).Connect on the plectane (11) pin hole (20), (21) are arranged;
The lower end that d, middle ladder are responsible for (10) has a longitudinally elongated movable pin hole (18) that middle ladder is connected with the descending stair self-locking, in the lower end that last ladder is responsible for (13) a longitudinally elongated movable pin hole (19) that ladder is connected with middle terraced self-locking is arranged.
2, foldable ladder according to claim 1 is characterized in that the standby ladder person in charge's (24) of described standby ladder top has an energy and descending stair to be responsible for the insertion connecting tube (25) that plays anastomosis between (2).
3, foldable ladder according to claim 1 and 2 is characterized in that being equipped with on the descending stair one and can make the long rope hook (23) that keeps acute angle between middle ladder and the descending stair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87204049 CN87204049U (en) | 1987-03-21 | 1987-03-21 | Folding type ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87204049 CN87204049U (en) | 1987-03-21 | 1987-03-21 | Folding type ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87204049U true CN87204049U (en) | 1987-12-02 |
Family
ID=4819973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87204049 Ceased CN87204049U (en) | 1987-03-21 | 1987-03-21 | Folding type ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87204049U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014107844A1 (en) * | 2013-01-09 | 2014-07-17 | Chen Yaw Jang | Improved structure for folding-type aluminium ladder |
| CN104763312A (en) * | 2015-03-30 | 2015-07-08 | 安徽理工大学 | Portable type combined ladder |
| CN106894750A (en) * | 2017-03-16 | 2017-06-27 | 武汉轻工大学 | Emergency door stairs and application method |
| CN110043184A (en) * | 2018-01-15 | 2019-07-23 | 崇友实业股份有限公司 | Elevator machine cheats ladder |
-
1987
- 1987-03-21 CN CN 87204049 patent/CN87204049U/en not_active Ceased
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014107844A1 (en) * | 2013-01-09 | 2014-07-17 | Chen Yaw Jang | Improved structure for folding-type aluminium ladder |
| CN104763312A (en) * | 2015-03-30 | 2015-07-08 | 安徽理工大学 | Portable type combined ladder |
| CN106894750A (en) * | 2017-03-16 | 2017-06-27 | 武汉轻工大学 | Emergency door stairs and application method |
| CN110043184A (en) * | 2018-01-15 | 2019-07-23 | 崇友实业股份有限公司 | Elevator machine cheats ladder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right |