CN201276966Y - Extension ladder - Google Patents
Extension ladder Download PDFInfo
- Publication number
- CN201276966Y CN201276966Y CNU2008201327218U CN200820132721U CN201276966Y CN 201276966 Y CN201276966 Y CN 201276966Y CN U2008201327218 U CNU2008201327218 U CN U2008201327218U CN 200820132721 U CN200820132721 U CN 200820132721U CN 201276966 Y CN201276966 Y CN 201276966Y
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- China
- Prior art keywords
- ladder
- joint
- slip
- length
- riding club
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a telescopic ladder. Among various ladder types, the utility model carries out perpendicularly formed components or extruded ladder frame sections (1), and profiles or nodes (2) are made of but not limited to aluminum, steel, plastic or composite materials. As for the telescopic ladder, the profiles (2) of the ladder frame sections (1) are assembled in the way that every two adjacent ladder frame sections (1) are provided with the same profiles (2) sliding in a channel (3) and a channel (4), therefore, when a plurality of sections connected in the way, a prolonged structure (5) is formed, and further, the telescopic ladder can be contracted into the length of one optional sliding ladder frame section, thereby forming the compact extensible structure (6).
Description
Technical field
The utility model relates to a kind of ladder, especially a kind of telescopic ladder.
Background technology
Telescopic ladder is because compact size makes them be convenient to store and transportation, and telescopic ladder has various ways to come from coaxial or similar coaxial cast cross section, and it is big or diminish and the cross section interlocks slidably mutually to be similar to the progressive change in cross section.Two parallel scalable cross sections are connected by horizontal member, and as riding club or pedal, each of telescopic ladder slidably member comprises the telescopic member of complete different length.
Additional each sliding component is fixed under the state that ladder is partially or completely opened in the mode of snap close, and this method normally is positioned at the side/top or the bottom in riding club cross section.The ladder that has can discharge progressive successively directly the causing fully of snap close in each cross section automatically and close.The ladder that has has mechanism's snap close or discharge ladder to proper states automatically.
Most of telescopic ladder that above-mentioned functions can be provided usually is not owing to complex structure is difficult to make, assemble difficulty exactly and operational hazards, and heavy, and the ladder that has is because heavy inconvenience is mobile, damage finger, or scalable difficulty and be not easy to safety operation.
The utility model content
The purpose of this utility model is in order to reduce the problems referred to above, to make this telescopic ladder lighter and handier, being convenient to transportation, and is simple, and safety is cheaply operated with being convenient to.
In order to achieve the above object, the utility model provides a kind of telescopic ladder, it is extensible structure, this structure comprises a plurality of with identical slide assemblies, each slide assemblies is made up of length two parallel slip joints (slipper) identical with the cross section, and is connected by transverse member on each slide assemblies, that length is identical.
Described slip joint is configuration like this, and the length of transverse member by the twice of the compensation that is attached to the slip joint on the transverse member, increases or reduce length on adjacent slide assemblies.
But described structure can constitute the extending structure of structure, mast or an antenna.
The joint of described slip joint is different with length.
The joint of described transverse member, multiplicity, material and structure are different.
Described structure is formed several parallel slide assemblies, slip joint and connecting elements, but to form extending structure.
Described structure can mechanically, physically be locked in any compressed, part configuration that be extended or that fully be extended.
Described structure is used independently, and instrument makes its prolongation or contraction.
Described joint is to be made by any suitable material or combination of materials and linker.
The telescopic ladder of the utility model indication only needs a unified size and is arranged on the both sides of riding club with the ductile terraced frame joint (terraced frame part) that structure is complementary, so that form slidable fit mutually.A typical flexible ladder is made up of different structural sections and riding club and sub-member.This invention, the son that can be used for each slide assemblies with identical section structural member is installed.In fact, each sliding component can be the same.The telescopic ladder that the typical case is provided with needs different terraced frame joints to be each slide assemblies, so flexible ladder, if any 10 rank, need 10 kinds of different structure ladder frames section successively, if any 20 rank, then need 20 kinds of different concentric cross sections, and each riding club is different length.And this telescopic ladder, main invention is that unlimited many identical slidably sub-members can be arranged.
The utility model, the riding club of how many numbers and terraced frame joint no matter, no matter how many extensible length only need unified terraced frame joint as sliding component, and the riding club in unified cross section and unification.To reduce member significantly at different cross section, simple and regular, significantly reduce many different interfaces, with a common interface, make extension ladder ratio be easier to assembling, reach the reduction of manufacturing cost, and safer and more reliable use.
Therefore, as the ladder of an embodiment of the present utility model, can be the arbitrary dimension and the unconfined arbitrarily configuration of side-rolling ladder frame joint (terraced frame part), riding club or pedal.
Typical side-rolling ladder frame joint (terraced frame part) is a continuous joint (part), may make with plastics, metal or other material, joint for extrusion modling, or form by some elements parallel, smooth or curve, rigidity or semi-rigid material by any amount are assembled, and are linked together by any suitable instrument.These instruments include but not limited to bonding adhesive, welding, riveted joint and patented fixing means.
Pedal or riding club can be by similar, unified, continuous joints, or any suitable connecting elements, or any material or configuration form, and include but not limited to the combination of wood, glass fiber, composite material, plastics, metal or these materials.The riding club of unified joint or pedal may comprise passage or the groove in the joint (section), do not need fasteningly separately like this, just can keep locking device.
Like this, the typical case who can be used for professional purpose or domestic applications can prolong ladder and be made up of some identical slip sub-components, the mutual intussusception of slip sub-component, and riding club or pedal contact with each other or close proximity like this, and the slip sub-component can prolong or part prolongs, and forms a ladder.But the extending length of ladder depends on the length of joint, the number of slip joint and the part of joint and covers.In each slip sub-component, connecting elements can be but be not limited to be riding club or pedal, and riding club or pedal are positioned at each end that matches mutually of side-rolling ladder frame joint, gives to prolong the compactest form of ladder.
In the configuration that is extended, configuration and any position that is required that part prolongs at the mutual intussusception of each slip sub-component provide one to go up lock tool, so that each joint is fixed firmly on the adjacent joint.For the reason of safety and engineering aspect, go up the both sides that lock tool is positioned at each slide assemblies of ladder for two, each one of every side.Unblank and adjust any slide assemblies of ladder, go up lock tools for two that must discharge ladder simultaneously, this required before discharging and reorientating any joint, and the operator will be placed on their hand the position of two safety on the ladder.This has guaranteed that the operator does not have their finger or hand to be placed between the adjacent riding club or pedal yet, otherwise the sort of situation is a danger close.
Have a lot of positions can put a pair of releasing tool of each slide assemblies, preferably with their position arrangement at the external surface of side-rolling ladder frame joint.The a pair of releasing tool of each slip sub-component also preferably is positioned at the topmost of side-rolling ladder frame joint, but also can be arranged in other position.For can telesecurity ground operation and discharge and go up lock tool, releasing tool and mechanism for locking up are connected mechanically by one or a series of rigidity or semi-rigid element.
The profile of slip joint is to arrange like this, and perhaps there is the joint of a chamber or tubulose in the space that produces an axial deviation between two adjacent joints in side-rolling ladder frame joint, by this space, chamber or joint, can locate mechanical connection, and can be safely, operation reliably.This chamber can also be used to holding connection, lead, cable, pipe, pipeline, device for any purpose, is not limited to transfer liquid, gas, electric and optical signal, electricity, mechanical load or action,
Last lock tool can be spring-loaded and self-locking, only requires a releasing operation, and perhaps going up lock tool has to go up a lock-bit, a unlock position, and these two positions can be selected by operation tool is manual.Operation tool is preferably arranged the external surface of side-rolling ladder frame joint, but also can be arranged in other position.In some embodiment of the present utility model, preferably go up lock tool and associate every pair, they can only synchronously be operated like this.
Uppermost slip sub-component can comprise several riding club or transverse members between adjacent side-rolling ladder frame joint, that be used to improve structural strength and stability, and transports instrument
Side-rolling ladder frame on basal sliding sub-component joint can be prolonged, to hold a foot of ladder part or to satisfy national safety standard.Foot of ladder is preferably mounted on the minimum terraced frame joint, and is anti-skidding.Between the lowermost portion of basal sliding ladder frame joint, a treadle preferably is set, so that when prolonging or regain slide assemblies, can stablize ladder.
Side-rolling ladder frame joint is best to be made by homogeneous material, and every joint can directly slide to next joint.Be used for a variety of materials of terraced frame joint,, do not have good sliding capability, very quick-wearing, deterioration such as resembling aluminium and glass fiber-reinforced plastics.So further aspect of the utility model is: side-rolling ladder frame joint can be by one or more bearing instruments separately, to reduce friction and wear, make ladder easier, successfully prolong and regain, and the instrument that provides a kind of more reliable, safety, mechanical aspects to improve, shifting the static load between the static state slip sub-component of being locked.
Each end at side-rolling ladder frame joint also preferably has end cap.These end caps can prevent from this part is caused damage, and cover presumable sharp edges on every end of joint.Also can prolong these end caps, comprising the bearing instrument between the adjacent slip joint, and a specific character be arranged, not need fastened tools or bonding adhesive, end cap just can be fixed on the side-rolling ladder frame joint.
Can prolong ladder is exemplary embodiments of the present utility model, but such extension fixture can be used for forming framework, support, antenna, tower or structure.Two ladders can be linked at together, form an adjustable stepladder.
The utility model preferably has such characteristic, side-rolling ladder frame joint has identical profile, and connecting elements, riding club or pedal have identical profile, and is generally each slip sub-component and combines, the sub-component that slides then remerges, to form whole ladder or the structure of prolonging.In this form, ladder or structure ladder frame joint preferably have unified length, and riding club, pedal or the connecting elements of unified length makes device be made by several the same common slide assemblies.By this form, each slip sub-component is in the top slide of previous slip sub-component, and the identical joint of any amount can be combined the structure of a random length of formation.Compensation is a normal distance of the matching geometries definition of side-rolling ladder frame joint.
In another popular embodiment of the present utility model, use as a kind of typical case who prolongs ladder or structure, the side-rolling ladder frame of each slip sub-component preferably has identical length and profile, and the compensation between each adjacent slip joint is the every side to ladder or structure.The slip sub-component is a deflection so that be able to migration, be parallel to each other at the adjacent side-rolling ladder frame joint of each end of riding club, pedal or connecting elements, and along the axle of connecting elements, riding club or pedal in opposite direction.Therefore, by this form, all slip sub-components are arranged in a single operation planar uniformly.In this embodiment, side-rolling ladder frame joint still has similar or identical profile and length, riding club, pedal and connecting elements have same or analogous profile, unique difference is the length of riding club, pedal or connecting elements, so each riding club, pedal or connecting elements are pressed the compensation of side-rolling ladder frame joint or the twice of gradient increases or reduce length.
Description of drawings
Fig. 1 shows the ladder that is extended.
Fig. 2 shows the ladder under intussusception pattern compactness, mutual.
What Fig. 3 showed is the uppermost riding club of the ladder of compact, mutual intussusception.
Fig. 4 is a view that shows the ladder that discharges pad and mutual intussusception.
Fig. 5 shows other joint.
Fig. 6 and 7 is parts joint and the interlocking members that show the side of ladder.
Fig. 8 is a lock set in the demonstration, the joint by riding club.
Fig. 9 is one and shows the component view that discharges pad and bearing (ball) cover.
Figure 10,11,12 shows foot of ladder, foot-driven lever and the annex of ladder.
Figure 13 shows is last lockhole in the ladder stile.
Figure 14 is one and shows mechanism for locking up and foot of ladder, the joint by ladder.
Figure 15 and 17 shows the broken away view that goes up lock set and relieving mechanism.
What Figure 16 showed is last lock set in the side-rolling ladder sub-component and the position that discharges pad.
Figure 18,19 and 24 shows bearing (ball) cover, end-blocking and their outfit.
Figure 20 and 21 shows upward lock set.
Figure 22-24 is presented at the position of mutual intussusception and the ladder of the another kind of form of the position that is extended.
The specific embodiment
Have a variety of ladder types, the utility model is implemented one and is formed vertical member or the terraced frame joint of extruding 1 and by aluminium, steel, plastics or composite material, but be not limited to make with these materials, profile or save 2.In the utility model, the profile 2 of ladder frame joint 1 is configuration like this, each adjacent extensible terraced frame joint 1 has identical profile 2, and in passage 3 that mates and passage 4, slide, therefore, when a plurality of joints connect like this, just formed a structure that is extended 5, it may be compressed to the length of any one side-rolling ladder frame joint, therefore forms the extensible structure 6 of a compactness.Profile 2 can adopt a variety of forms, includes but not limited to 7,8,9,10, and can change between partly overlapping joint, and this slip or extensible joint can be identical or have different length.Joint is preferably extruded, but is not limited to like this, and can be made by any suitable instrument, material and polishing.
In Figure 22,23 and 24 another embodiment of the present utility model that show, side-rolling ladder frame joint is compensated with the array on other plane or compound Plane Angle.
Form one can prolong that 5, two of ladders are parallel, the side-rolling ladder frame joint 1 of same or analogous posture or length connects by the member or the riding club 11 of a level, riding club 11 is metal or plastics extrudate normally, but also can be made by other material.In most of embodiment of the present utility model, the member of level or riding club 11 connect every pair of vertical member or terraced frame, to form the extensible riding club assembly 12 that slides.Several riding clubs 11 can be connected shown in the image pattern 25.Each extensible riding club assembly 12 can be identical with next riding club assembly, so that can by the connection of some fastening means (including but not limited to tubular rivet), form the ladder of an indefinite length with two identical terraced frames 1 and riding club 11.Use the telescopic ladder of the joint of concentric or axial contraposition or pipe, indefinite length will need the not parts of determined number.
Fig. 2 has shown another embodiment of the present utility model, and the identical riding club joint 11 on each adjacent slide assemblies is pressed the compensation of slip joint 1 or the twice of gradient increases or reduce length.
The sliding component 1 that formation can prolong the terraced frame of ladder can just nearby slide or contact with next joint.To be overused if can prolong ladder, or be used for the supporting heavy load, and then be preferably in and put a bearing 13 between the adjacent slip joint 1, bearing 13 is made by the material that is fit to, and includes but not limited to white metal, brass, plastics and composite plastic.When the structure that is extended be fixed on any mutually intussusception, part is extended, or during the configuration that fully is extended, bearing 13 actions reducing slide friction, wearing and tearing and the inefficacy of interface, and are shifted higher load.
In other various application, joint may be the load bearing with interface between saving, and has very little or do not have dynamic bearing characteristics.In other example, bearing surface 14,15 may be the homogeneous component as the slip joint among Figure 26.
Bearing can be independent parts, also can or seal 17 and become one with the protection end cap 16 of each end that is fixed on each slip joint 1.The bearing that these are independent or become the protection bearing (ball) cover of one, can by independent fixture or integrated mould manufacturing or assembling meet bridle 18, be secured to slip joint.Meeting bridle 18 can be configured, with in the aperture 19 that is positioned at coupling or the characteristic in the slip joint (slipper) 1.
Bearing is for the prolongation of slip joint 1 and foldingly provide lower slip resistance, load bearing surface 20,21 to provide ladder in the rigidity and the intensity of available configuration arbitrarily.
In the utility model, the attended operation lock pins 22 that lead 23 and release pad 27 form, discharge the circular projection on the pad 27 Contact Transmission device levers 25, therefore when release pad 27 was moved, it discharged lock pin 22 to the spring of 26 deflections of the aperture in the slip joint 1.Lead 23 and release pad 27 can be combined among the figure by lead, plastics or metal homogeneous component.
In another embodiment of the present utility model, slip joint may be open passage.
In order to improve the operation that discharges pad 27 and lock pin 22, bearing (ball) cover 16 is to dispose like this, so that the operator is placed on its thumb on the bearing (ball) cover 16, a finger is placed on and discharges pad 27 times.The arrangement of surface 36 and the part 37 that is cut off has guaranteed discharging the maximum operating space of pad 27.The thing that these surfaces preferably have anti-skidding texture maybe can grab.
Therefore, can prolong ladder and be unblanked by release lever 27, characteristics of the present utility model are that the operator must be put a hand on each adjacent release pad 27, therefore prolonging or during folded ladder, do not having possibility or their hand or finger is trapped between the riding club joint.
In the configuration 6 of the mutual intussusception of ladder and the configuration 5 that is extended, arbitrary joint must be unblanked separately, and can only discharge pad 27 and unblank by operating on any slide assemblies two simultaneously.Release pad 27 on the bearing (ball) cover 16 has also formed the lifting instrument of joint and the arbitrary joint above this joint.
When slip ladder joint 12 was opened gradually, the operator faced such a case, above the line of the center of gravity of ladder assembly between d/d two adjacent release pads 24 and the ladder that is extended.This makes the ladder assembly instability, so treadle 28 is positioned at the pedestal of ladder of 29 li of the projections of two circles in the inner surface of foot of ladder 30, and the operator can be placed on their pin on the treadle like this, and the pedestal of ladder can not slide like this.
Therefore, ladder improves constantly joint by promoting the release pad operation of top joint simultaneously, is locked up to joint, with similar fashion next part is operated then, improves the joint of this joint and all back, fully is extended up to ladder.
By opposite order, ladder can be reduced.The design of ladder allows the operator to improve or reduce any joint by any order.
Another characteristic of joint is, the recess 31 of joint on 1 allows the side of riding clubs 11 to flush surface 32, is fixed to joint when going up by rivet or similar instrument by hole 33 when riding club like this, and riding club can not rotate, so makes interface be rigidity.
Ladder is like this configuration, and it can be supported at an easy rate by holding uppermost riding club 1, be preferably on the uppermost riding club 1 additional one and transport handle 34, but this not necessarily.In the configuration of the another kind of ladder, the riding club joint can have extra surface, so that a comfortable characteristic of transporting to be provided, as the replacement scheme of handle 34.
Can a nearly step prolong these surfaces that are extended, riding club is to be formed by that close or empty joint.
A characteristic of the present utility model is, the size of slip joint 1 or terraced frame is identical with profile, is that it has two or more parameter bearing surfaces, so that operation, the strength and stiffness of improvement to be provided to ladder but save another characteristic of 1.When having prolonged ladder, to wait when to be used, the surface 20,21 of two couplings allows to save direct transferring load along the structure of ladder, reduces the load of bearing 13.When the length of ladder is adjusted, the son of slip saves mutual when mobile, bearing surface 3 and 4 and bearing element 13 allow operation ladder smoothly.
Riding club 11 can have a lot of other functions, and such as serving as the instrument of transporting, but riding club also can be used to locate such as the such device of last lock set 32.And a characteristic of riding club joint is that it has a passage joint 24, need not securing member or other instrument, just can keep in place going up lock set 32.Riding club joint 11 has the passage joint 24 of individual dovetail capitiform, but any interlocking profile can be arranged.
Can to prolong ladder in order using more widely, an anti-skidding foot of ladder (being positioned at the lower end of terraced frame) preferably to be arranged and, to reduce ladder and to put the damage on the surface of ladder at the protection end cap or the lid 35 at the top of ladder.
Claims (3)
1, a kind of telescopic ladder, it is extensible structure, it is characterized in that, this structure comprises a plurality of with identical slide assemblies, each slide assemblies is made up of length two parallel slip joints identical with the cross section, and is connected by transverse member on each slide assemblies, that length is identical.
2, telescopic ladder according to claim 1 is characterized in that, described slip joint is configuration like this, and the length of transverse member by the twice of the compensation that is attached to the slip joint on the transverse member, increases or reduce length on adjacent slide assemblies.
3, telescopic ladder according to claim 1 and 2 is characterized in that, but described structure constitutes the extending structure of structure, mast or an antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201327218U CN201276966Y (en) | 2008-08-07 | 2008-08-07 | Extension ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201327218U CN201276966Y (en) | 2008-08-07 | 2008-08-07 | Extension ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201276966Y true CN201276966Y (en) | 2009-07-22 |
Family
ID=40894552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201327218U Expired - Fee Related CN201276966Y (en) | 2008-08-07 | 2008-08-07 | Extension ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201276966Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317367A (en) * | 2014-07-29 | 2016-02-10 | 吉麦克斯国际公司 | Telescopic ladder comprising ladder sections of different densities |
-
2008
- 2008-08-07 CN CNU2008201327218U patent/CN201276966Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105317367A (en) * | 2014-07-29 | 2016-02-10 | 吉麦克斯国际公司 | Telescopic ladder comprising ladder sections of different densities |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090722 Termination date: 20110807 |