WO2016119088A1 - 可作为工作平台使用的工作梯 - Google Patents

可作为工作平台使用的工作梯 Download PDF

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Publication number
WO2016119088A1
WO2016119088A1 PCT/CN2015/000325 CN2015000325W WO2016119088A1 WO 2016119088 A1 WO2016119088 A1 WO 2016119088A1 CN 2015000325 W CN2015000325 W CN 2015000325W WO 2016119088 A1 WO2016119088 A1 WO 2016119088A1
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WO
WIPO (PCT)
Prior art keywords
pedal
ladder
work
rear axle
rod
Prior art date
Application number
PCT/CN2015/000325
Other languages
English (en)
French (fr)
Inventor
王万兴
Original Assignee
宁波兴富工具有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 宁波兴富工具有限公司 filed Critical 宁波兴富工具有限公司
Priority to EP15879300.0A priority Critical patent/EP3252260B1/en
Priority to US15/549,340 priority patent/US10167668B1/en
Publication of WO2016119088A1 publication Critical patent/WO2016119088A1/zh

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Classifications

    • 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
    • E06C1/39—Ladders having platforms; Ladders changeable into platforms
    • E06C1/393—Ladders having platforms foldable with the ladder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • B25H1/02—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby of table type
    • B25H1/04—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby of table type portable
    • 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
    • E06C1/14—Ladders capable of standing by themselves
    • E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
    • 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
    • E06C1/14—Ladders capable of standing by themselves
    • E06C1/16—Ladders capable of standing by themselves with hinged struts which rest on the ground
    • E06C1/18—Ladders capable of standing by themselves with hinged struts which rest on the ground with supporting struts formed as ladders
    • 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
    • E06C1/387—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 having tip-up steps
    • 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
    • E06C7/16—Platforms on, or for use on, ladders, e.g. liftable or lowerable platforms
    • 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

Definitions

  • the present invention relates to a ladder, and more particularly to a work ladder that can be used as a work platform.
  • Ladders are a common basis for ascending or repairing in home life.
  • One is a ladder.
  • the ladder consists of two vertical poles and a crosspiece that is placed between the two poles. It can be used upright. When using it, the ladder should be placed at a fixed position on the high point to support the ladder, and only provide a single function for ascending. If such a ladder is used for maintenance, it is necessary to use the tool up and down several times. convenient.
  • the other is a herringbone ladder, which is mostly composed of a main ladder frame and a supporting ladder frame hinged together at the top, and can be climbed in a suspended position compared with a ladder.
  • each ladder frame comprises two relatively spaced ladder bars and a plurality of crosspieces arranged between the two ladder bars, and the ladder bars of the adjacent two ladder ladder frames are connected and connected by a hinge mechanism.
  • the bottoms of the outermost two-stage ladder frames are respectively provided with supporting legs, and a working panel is placed in the ladder frame of the middle section to form a working platform.
  • the ladder can be used as a work platform, it requires an additional separate work panel, and the work panel and the ladder are separated from each other, and the work panel is easily lost or forgotten to carry.
  • the technical problem to be solved by the present invention is to provide a work ladder that can be used as a work platform by using its own pedal as the above-mentioned state of the art, and the work ladder increases its own use and is more user-friendly.
  • a work ladder that can be used as a work platform, including a ladder frame body that can be opened and closed, and a pedal assembly that is disposed in the ladder frame body and can be folded. It is characterized by:
  • the pedal assembly includes at least two pedals spaced apart from each other and a rear axle for each pedal rear end.
  • the lowermost pedal is a bottom pedal
  • the pedal above the bottom pedal is an upper pedal
  • the rear axle is divided into a bottom pedal rear end. a bottom rear axle that rests and an upper rear axle that rests at the rear end of the upper pedal;
  • the front part of the ladder frame body is rotated and provided with two auxiliary support rods that can be turned upside down, and the front end of the bottom pedal is turned Between the two auxiliary support rods, the top of the ladder frame body is provided with an auxiliary shaft portion disposed laterally for the rear end of the bottom pedal to rest; when the auxiliary support rod is turned down, the rear end of the bottom pedal is placed On the bottom rear axle, the bottom pedal is moved up to the top of the ladder body while the rear end of the bottom pedal rests on the auxiliary shaft portion.
  • the ladder frame body comprises two front and rear spaced ladders and a rear ladder pole, and the tops of the front side and the rear ladder poles are hinged to each other on the same side, and the auxiliary support rods are arranged to rotate on the front end surface of the front ladder pole .
  • the above is the conventional structure of the working ladder ladder body, and of course, the ladder structure of other existing working ladders can also be used.
  • the front end of the upper pedal is disposed between the two front ladder rods, the upper rear axle is fixed between the two rear ladder rods, and the upper and lower sides of the upper pedal adjacent to the bottom pedal are rotationally coupled with the upper link, the two rear ladder rods
  • the lower portion is rotatably coupled to the lower link, and the ends of the upper and lower links on the same side are coupled to one side of the bottom rear axle by a common rotation.
  • the folding function of the pedal assembly can be realized by the rotation of the upper and lower links, and the structure for realizing the pedal folding is simple and reasonable. If there are multiple pieces of the upper pedal, the left and right sides of the other adjacent upper pedals are connected by the connecting rods. , to achieve the function of synchronous folding. Of course, there are many structures for the pedal assembly to be folded, and reference can be made to the prior art.
  • Each of the front step bars is fixed with a U-shaped fixing piece, and the left and right sides of the front end of the upper pedal are respectively rotatably disposed on the fixing piece, and the auxiliary supporting rod is rotatably disposed in the U-shaped groove of the fixing piece.
  • the fixing piece provides a suitable mounting position for the upper pedal, especially the auxiliary support rod, which simplifies the front ladder structure.
  • the tops of the front and rear ladder bars on the same side are mutually joined together by a connecting member that is fixed to the top of the front ladder bar, and the top end of the rear ladder bar is rotatably coupled to the connecting member.
  • the connecting member can be provided with a mounting position for the auxiliary shaft portion, that is, the auxiliary shaft portion can be fixed between the two connecting members, and of course, the front ladder rod and the rear ladder rod can also be directly hinged together.
  • the bottom pedal has a first perforation for facilitating the hand to extend into the upper pedal, and the upper pedal is provided with a hand for extending the hand. Two perforations. When you fold it, just put your hand into the hole and pull it.
  • the adjacent upper pedal does not block the person's leg, and we have the front end face of the upper pedal adjacent to the bottom pedal with a recessed recess that is recessed rearward. In this way, when the person stands on the bottom pedal, the leg will fall into the recess, so that the upper pedal does not block the person's leg, and the person can stand on the bottom pedal.
  • the bottom surface of the bottom pedal is provided with a connection structure for detachable connection with the bottom rear axle or the auxiliary shaft portion.
  • the bottom pedal can be used as a pedal to lock the work ladder, preventing the work ladder from being accidentally collapsed, and when the bottom pedal is used as a working platform, not only locks
  • the role of the work ladder also serves to stabilize the workbench, and the workbench is accidentally turned over.
  • the connecting structure includes a supporting block and a driving structure for driving the supporting block to slide back and forth, and the bottom surface of the bottom pedal has a limiting groove extending in a width direction thereof and matching the bottom rear axle or the auxiliary shaft portion, the bracket Constrained to the bottom surface of the bottom pedal and capable of sliding back and forth, the rear portion of the bracket has a stopper extending below the limiting groove, and in a state where the bottom rear axle or the auxiliary shaft portion is placed in the limiting groove, The stop is located below the bottom rear axle or the auxiliary shaft. Pass limit The matching of the position groove with the upper block of the bracket restricts the bottom rear axle or the auxiliary shaft portion below the bottom pedal, and functions to position the bottom pedal. Of course, other bottom brackets can be restrained at the bottom as needed.
  • the structure on the shaft or the auxiliary shaft is configured to drive the supporting block to slide back and forth.
  • the driving structure comprises a pull rod fixed on the support block, the pull rod is restrained on the bottom surface of the bottom pedal and can slide back and forth, the end of the pull rod is connected with a handle, and the handle is also restrained on the bottom surface of the bottom pedal and can slide back and forth; the support block There are two pieces, the pull rod is U-shaped, and each of the two straight rod portions of the pull rod is fixed with one of the support blocks, and the pull handle is connected with the middle portion of the cross rod portion of the pull rod.
  • the two brackets can be more securely constrained to the bottom pedal or the auxiliary shaft portion.
  • the driving structure only needs to push and pull the handle to drive the driving block to slip, and the bottom pedal is at the bottom rear axle or the auxiliary shaft portion. Locking or unlocking on the top, in order to keep the bracket in the locked state, we can also set a spring at the back of the bracket to keep the bracket locked.
  • the invention has the advantages that the bottom pedal can be turned over to the top of the ladder frame body, and the auxiliary shaft portion for resting the bottom pedal is arranged on the top of the ladder frame body, so the bottom pedal can be used not only as a pedal
  • the bottom pedal can be used as a working platform when it is turned over to the top of the ladder frame and rested on the auxiliary shaft portion.
  • the working platform allows us to perform work such as sawing, cutting, engraving, etc. on the platform.
  • FIG. 1 is a schematic perspective view of a three-dimensional structure of an embodiment of the present invention (a working state of a working ladder);
  • Figure 2 is a perspective cross-sectional view of the embodiment of the present invention (working ladder use state);
  • FIG. 3 is a schematic structural view showing a connection structure disposed on a bottom pedal according to an embodiment of the present invention
  • connection structure disposed on the bottom pedal in the embodiment of the present invention is an exploded perspective view showing the connection structure disposed on the bottom pedal in the embodiment of the present invention
  • FIG. 5 is a schematic perspective view of a three-dimensional structure according to an embodiment of the present invention.
  • Figure 6 is a perspective cross-sectional view of the embodiment of the present invention (working platform use state);
  • FIG. 7 is a schematic perspective view of a three-dimensional structure (retracted state) according to an embodiment of the present invention.
  • a work ladder that can be used as a work platform, including a ladder frame body that can be opened and closed, and a pedal assembly that is disposed in the ladder body and can be folded.
  • the ladder frame body comprises two front and rear spaced ladder bars 7 and a rear ladder bar 8 , and the tops of the front side ladder bars 7 and the rear ladder bars 8 are hinged to each other by a connecting member 9 , and the connecting member 9 is fixed to the front ladder bar
  • the top end of the rear ladder rod 8 is rotatably connected to the connecting member 9, and a support rod is disposed between the two front connecting rods 7, and a supporting rod is also disposed between the two rear connecting rods 8.
  • the pedal assembly includes at least two pedals spaced apart from each other and a rear axle for resting the rear ends of the pedals.
  • the lowermost pedal is the bottom pedal 1 and the pedal above the lower pedal 1 is the upper pedal 2, the upper portion in this embodiment.
  • the rear axle is divided into a bottom rear axle 3 on which the rear end of the lower pedal 1 rests and an upper rear axle 4 on which the rear end of the upper pedal 2 rests.
  • the front portion of the ladder frame body is provided with two auxiliary support rods 5 which can be turned upside down.
  • the auxiliary support rods 5 are rotatably disposed on the front end surface of the front ladder rod 7, and the front front ladder rods 7 are fixed with a U-shaped fixing.
  • the sheet 10, the U-shaped groove of the fixing piece 10 is disposed forward, and the auxiliary support rod 5 is rotatably disposed in the U-shaped groove of the fixing piece 10.
  • the front end of the bottom pedal 1 is rotatably disposed between the two auxiliary support bars 5 via a rotating shaft 17, and the top of the ladder frame body is provided with an auxiliary shaft portion 6 disposed laterally for the rear end of the bottom pedal 1 to rest, and the auxiliary shaft portion 6 can be disposed at two
  • the connecting members 9 may also be disposed on the connecting arms on both sides of the tool box, as long as they are disposed laterally on the upper portion of the ladder frame body.
  • the bottom pedal 1 is provided with a first through hole 16 for facilitating the hand to extend into the pull.
  • the front end face of the upper step 2 adjacent to the bottom step 1 has a concave portion 22 which is recessed rearward. The shape of the recess 22 matches the shape of the human leg. .
  • the front end of the upper pedal 2 is rotatably disposed between the two front ladder rods 7, and the front and rear sides of the front pedal 2 are respectively rotatably disposed on the fixed piece 10.
  • the upper rear axle 4 is fixed between the two rear ladder bars 8, and the upper and lower sides of the upper pedal 2 adjacent to the bottom pedal 1 are rotatably connected with the upper link 11, and the lower portions of the two rear ladder bars 8 are rotatably connected with the lower link 12
  • the ends of the upper link 11 and the lower link 12 on the same side are coupled to one side of the bottom rear axle 3 by a common rotation of the rotating shaft.
  • the upper pedal 2 is provided with a second through hole 21 for facilitating the hand to extend into the pull.
  • the bottom surface of the bottom pedal 1 is provided with a connection structure for detachable connection with the bottom rear axle 3 or the auxiliary shaft portion 6.
  • the connecting structure includes a supporting structure for the bracket 13 and the driving bracket 13 to slide back and forth, and the bottom surface of the bottom pedal 1 has an outer shape penetrating in the width direction thereof to match the bottom rear axle 3 or the auxiliary shaft portion 6.
  • the limiting groove 12, the bracket 13 is restrained on the bottom surface of the bottom pedal 1 and can slide back and forth, and the rear portion of the bracket 13 has a stopper 131 extending below the limiting groove 12, and the rear axle 3 or the auxiliary at the bottom In a state where the shaft portion 6 is placed in the stopper groove 12, the stopper portion 131 is located below the bottom rear shaft 3 or the auxiliary shaft portion 6.
  • the driving structure comprises a pull rod 14 fixed on the support block 13, the pull rod 14 is restrained on the bottom surface of the bottom pedal 1 and can be slid back and forth, the end of the pull rod 14 is connected with a handle 15, and the handle 15 is also restrained on the bottom surface of the bottom pedal 1 and can be front and rear Sliding;
  • the bracket 13 has two pieces, the tie rod 14 has a U shape, and the two straight rod portions of the tie rod 14 are fixed with a bracket 13 respectively, and the handle 15 is connected with the middle portion of the crossbar portion of the tie rod 14.
  • the ladder frame body is opened, and the rear end of the upper pedal 2 rests on the upper rear axle 4, while the auxiliary support bar 5 is in the down state, and the rear end of the bottom pedal 1 Shelved at the bottom of the bottom
  • the bottom rear axle 3 is embedded in the limiting recess 12 of the bottom pedal 1, while the blocking portion 131 of the bracket 13 is located below the bottom rear axle 3, at which time the bottom pedal 1 is used as a pedal.
  • the one-handed pull handle 15 when used as a working platform, the one-handed pull handle 15 is moved forward, the handle 15 drives the support block 13 to move forward, and the blocking portion 131 of the bracket 13 is moved forwardly away from the bottom rear axle 3, that is, the block The portion 131 no longer has a restraining effect on the bottom rear axle 3, and at the same time, the hand extends into the first perforation 16 of the bottom pedal 1 and is pulled upward, the bottom pedal 1 is disengaged from the bottom rear axle 3, and is passed out from the front of the ladder body.
  • the upper pedal 1 is turned up to drive the auxiliary support rod 5 upside down until the bottom pedal 1 is turned over the ladder body, and the rear end of the bottom pedal 1 is rested on the auxiliary shaft portion 6, the auxiliary shaft portion 6 Inserted into the limiting groove 12 of the bottom pedal 1, the pushing handle 15 is moved backward, the handle 15 drives the supporting block 13 to move backward, and the blocking portion 131 of the supporting block 13 is moved backward to the lower side of the auxiliary shaft portion 6, and the rear end of the bottom pedal 1 is It is restrained on the auxiliary shaft portion 6.
  • the front end of the bottom pedal 1 is supported by the auxiliary support rod 5, and the rear end of the bottom pedal 1 is supported by the auxiliary shaft portion 6, so that the bottom pedal 1 can be used as a working platform, and the working platform allows us to perform, for example, sawing, cutting, and engraving on the platform. Waiting for work.
  • the hand when folded, the hand extends into the second through hole 21 of the upper pedal 2 and pulls up the upper pedal 2, and the rear end of the upper pedal 2 is separated from the bottom rear axle 3 and moved up, and the front ladder 7 and the front ladder 7 are
  • the rear ladder rod 8 is closed, and the upper pedal 2 drives the bottom pedal 1 to move up together through the upper link 11 and the lower link 12 until it is folded, and the folding mode is similar to the existing work ladder.

Abstract

一种可作为工作平台使用的工作梯，包括梯架本体和踏板组件，踏板组件至少包括底部踏板（1）和位于底部踏板（1）上方的上部踏板（2），后轴分为底部后轴（3）及上部后轴（4），梯架本体的前部转动设置有两根能上下翻转的辅助支撑杆（5），底部踏板（1）的前端转动设置在两辅助支撑杆（5）之间，梯架本体的顶部设有横向设置供底部踏板（1）的后端搁置的辅助轴部（6）；在辅助支撑杆（5）下翻状态下，底部踏板（1）的后端搁置在最下端的底部后轴（3）上；在辅助支撑杆（5）上翻状态下，底部踏板（1）上移至梯子本体的顶部，同时底部踏板（1）的后端搁置在辅助轴部（6）上。该工作梯能利用其本身的踏板作为工作平台使用。

Description

可作为工作平台使用的工作梯 技术领域
本发明涉及一种梯子，尤其涉及一种可作为工作平台使用的工作梯。
背景技术
梯子是家居生活中登高取物或维修的常用根据，梯子种类大致有两种，一种是一字梯，这种梯子包括有两根立杆和架设在两根立杆之间的横档，它们只能直立使用，在使用时需将梯子靠在高处的固定位上以对梯子提供支撑，且仅提供登高的单一功能，如采用这种梯子进行维修，需多次上下拿放工具，使用不便利。另一种是人字梯，这种梯子大多由顶部铰接在一起的主梯架和支撑梯架组成，与一字梯相比其能在悬空位置进行登高作业，
目前的梯子大多数在顶部不具备较大的作业平台，不能作为工作平台使用，作业平台能让我们在该平台上进行例如锯、切、刻等工作。
有一公告号为CN202125241U(专利号为ZL201120157720.0)的中国专利《工作面板及具有该工作面板的工作平台梯》披露了一种能作为工作平台使用的梯子。它包括有三段梯架，各梯架包括两相对间隔设置的梯杆及设置两梯杆之间的数条横档，相邻的两段梯架的梯杆通过铰链机构转动连接在一起，位于最外端的两段梯架的底部分别设有支撑脚，中间段的梯架内搁置有工作面板以形成作业平台。虽然该梯子能作为作业平台使用，但其需要额外设置单独的工作面板，且工作面板与梯子自己彼此分离，工作面板易丢失或忘记携带。
发明内容
本发明所要解决的技术问题是针对上述现有技术现状而提供一种能利用其本身的踏板作为工作平台使用的工作梯，该工作梯增加其本身的用途，使用更人性化。
本发明解决上述技术问题所采用的技术方案为：一种可作为工作平台使用的工作梯，包括能张开和收拢的梯架本体，及设于梯架本体内并能被折收的踏板组件；其特征在于：
踏板组件包括上下间隔设置的至少两块踏板及供各踏板后端搁置的后轴，位于最下端的踏板为底部踏板，位于底部踏板上方的踏板为上部踏板，后轴分为供底部踏板后端搁置的底部后轴及供上部踏板后端搁置的上部后轴；
梯架本体的前部转动设置有两根能上下翻转的辅助支撑杆，所述底部踏板的前端转 动设置在两所述辅助支撑杆之间，所述梯架本体的顶部设有横向设置供底部踏板的后端搁置的辅助轴部；在辅助支撑杆下翻状态下，底部踏板的后端搁置在最下端的所述底部后轴上；在辅助支撑杆上翻状态下，底部踏板上移至梯子本体的顶部，同时底部踏板的后端搁置在所述辅助轴部上。
上述梯架本体包括两左右间隔设置的前梯杆和后梯杆，位于同一侧前梯杆和后梯杆的顶部相互铰接在一起，所述辅助支撑杆转动设置在前梯杆的前端面上。以上为工作梯梯架本体的常规结构，当然也可采用现有其它工作梯的梯架结构。
上述上部踏板的前端转动设置在两前梯杆之间，上部后轴固定在两后梯杆之间，与底部踏板相邻的上部踏板的左右两侧转动连接有上连杆，两后梯杆的下部转动连接有下连杆，同侧的上连杆和下连杆的端部通过转轴共同转动连接在所述底部后轴的一侧。通过上下连杆的转动能实现踏板组件的折收功能，该实现踏板折收的结构简单合理，如果上部踏板有多块，则其它相邻上部踏板的左右两侧均通过连杆转动连接在一起，起到同步折收的功能。当然踏板组件实现折收的结构有很多，可参考现有技术。
两所述前梯杆上各固定有呈U形的固定片，所述上部踏板的前端左右两侧分别转动设置在固定片上，所述辅助支撑杆则转动设置在固定片的U形槽内。固定片给上部踏板尤其是辅助支撑杆提供合适的安装位，能简化前梯杆结构。
位于同一侧的所述前梯杆和后梯杆的顶部通过连接件相互饺接在一起，所述连接件固定在前梯杆的顶部，所述后梯杆的顶端转动连接在连接件上。设置连接件可以给辅助轴部提供安装位，即辅助轴部可以固定在两连接件之间，当然前梯杆和后梯杆也可以直接铰接在一起。
为方便收拢工作梯及将底部踏板翻转至梯架本体上部作为工作平台使用，上述底部踏板上开有方便手伸入扳动的第一穿孔，上部踏板上开有方便手伸入扳动的第二穿孔。收拢时只需用手伸入穿孔然后扳动即可。
为使人站在底部踏板上，相邻的上部踏板不会阻挡人的腿部，我们将与底部踏板相邻的上部踏板的前端面具有向后内凹的凹部。这样当人站在底部踏板上时，腿部会陷入凹部内，使上部踏板不会阻挡人的腿部，方便人站立在底部踏板上。
上述底部踏板的底面设置有用以与底部后轴或辅助轴部可脱卸连接的连接结构。通过连接结构与底部后轴或辅助轴部连接，能使底部踏板作为踏板使用时起到锁定工作梯的作用，防止工作梯被意外收拢，而当底部踏板作为工作平台使用时，不但起到锁定工作梯作用，还起到稳定工作台的作用，放置工作台被意外翻转。
上述连接结构包括托块及驱动托块前后滑移的驱动结构，所述底部踏板的底面具有沿其宽度方向贯穿的外形与底部后轴或辅助轴部相配的限位凹槽，所述托块约束在底部踏板的底面并能前后滑移，托块的后部具有延伸至限位凹槽下方的挡部，在底部后轴或辅助轴部置于限位凹槽内的状态下，所述挡部位于底部后轴或辅助轴部的下方。通过限 位凹槽与托块上挡部的配合，将底部后轴或辅助轴部约束在底部踏板的下方，起到定位底部踏板的作用，当然也可根据需要设计出其它将底部踏板约束在底部后轴或辅助轴部上的结构。
上述驱动结构包括固定在托块上的拉杆，拉杆约束在底部踏板的底面并能前后滑移，拉杆的末端连接有拉手，拉手也约束在底部踏板的底面并能前后滑移；所述托块有两块，所述拉杆呈U形，拉杆的两个直杆部上各固定一个所述托块，所述拉手则与拉杆的横杆部的中部连接。设置两块托块能更牢靠将底部踏板约束在底部后轴或辅助轴部上，同时本驱动结构只需推拉拉手便能带动驱动块滑移，实现对底部踏板在底部后轴或辅助轴部上的锁定或解锁，为使托块保持在锁定状态，我们还可在托块后部设置使托块保持锁定状态的弹簧。
与现有技术相比，本发明的优点在于：底部踏板能翻转至梯架本体的顶部，并在梯架本体顶部设置用以搁置底部踏板的辅助轴部，因此本底部踏板不但可以作为踏板使用，当其翻转至梯架顶部并搁置在辅助轴部上的状态下，该底部踏板可作为工作平台使用，工作平台能让我们在该平台上进行例如锯、切、刻等工作。
附图说明
图1为本发明实施例的立体结构示意图(工作梯使用状态)；
图2为本发明实施例的立体剖视图(工作梯使用状态)；
图3为本发明实施例中连接结构设置在底部踏板上的结构示意图；
图4为本发明实施例中连接结构设置在底部踏板上的立体分解图；
图5为本发明实施例的立体结构示意图(工作平台使用状态)；
图6为本发明实施例的立体剖视图(工作平台使用状态)；
图7为本发明实施例的立体结构示意图(折收状态)。
具体实施方式
以下结合附图实施例对本发明作进一步详细描述。
如图1～7所示，为本发明的一个优选实施例。
一种可作为工作平台使用的工作梯，包括能张开和收拢的梯架本体，及设于梯架本体内并能被折收的踏板组件。
梯架本体包括两左右间隔设置的前梯杆7和后梯杆8，位于同一侧前梯杆7和后梯杆8的顶部通过连接件9相互铰接在一起，连接件9固定在前梯杆7的顶部，后梯杆8的顶端转动连接在连接件9上，两前连杆7之间设有支撑杆，两后连杆8之间也设有支撑杆。
踏板组件包括上下间隔设置的至少两块踏板及供各踏板后端搁置的后轴，位于最下端的踏板为底部踏板1，位于底部踏板1上方的踏板为上部踏板2，本实施例中的上部踏板2只有一块。后轴分为供底部踏板1后端搁置的底部后轴3及供上部踏板2后端搁置的上部后轴4。
梯架本体的前部转动设置有两根能上下翻转的辅助支撑杆5，辅助支撑杆5转动设置在前梯杆7的前端面上，两前梯杆7上各固定有呈U形的固定片10，固定片10的U形槽朝前设置，辅助支撑杆5转动设置在固定片10的U形槽内。
底部踏板1的前端通过转轴17转动设置在两辅助支撑杆5之间，梯架本体的顶部设有横向设置供底部踏板1的后端搁置的辅助轴部6，辅助轴部6可以设置在两连接件9之间，也可以设置在工具盒两侧的连接臂上，只要满足横向设置在梯架本体上部即可。底部踏板1上开有方便手伸入扳动的第一穿孔16，与底部踏板1相邻的上部踏板2的前端面具有向后内凹的凹部22，凹部22的外形与人双腿外形相配。
上部踏板2的前端转动设置在两前梯杆7之间，上部踏板2的前端左右两侧分别转动设置在固定片10上。上部后轴4固定在两后梯杆8之间，与底部踏板1相邻的上部踏板2的左右两侧转动连接有上连杆11，两后梯杆8的下部转动连接有下连杆12，同侧的上连杆11和下连杆12的端部通过转轴共同转动连接在底部后轴3的一侧。上部踏板2上开有方便手伸入扳动的第二穿孔21。
在辅助支撑杆5下翻状态下，底部踏板1的后端搁置在最下端的底部后轴3上；在辅助支撑杆5上翻状态下，底部踏板1上移至梯子本体的顶部，同时底部踏板1的后端搁置在辅助轴部6上。
底部踏板1的底面设置有用以与底部后轴3或辅助轴部6可脱卸连接的连接结构。
如图3、4所示，连接结构包括托块13及驱动托块13前后滑移的驱动结构，底部踏板1的底面具有沿其宽度方向贯穿的外形与底部后轴3或辅助轴部6相配的限位凹槽12，托块13约束在底部踏板1的底面并能前后滑移，托块13的后部具有延伸至限位凹槽12下方的挡部131，在底部后轴3或辅助轴部6置于限位凹槽12内的状态下，挡部131位于底部后轴3或辅助轴部6的下方。
驱动结构包括固定在托块13上的拉杆14，拉杆14约束在底部踏板1的底面并能前后滑移，拉杆14的末端连接有拉手15，拉手15也约束在底部踏板1的底面并能前后滑移；托块13有两块，拉杆14呈U形，拉杆14的两个直杆部上各固定一个托块13，拉手15则与拉杆14的横杆部的中部连接。
本工作梯的工作原理及过程如下：
如图1、2所示，作为工作梯使用时，梯架本体打开，上部踏板2的后端搁置在上部后轴4上，同时，辅助支撑杆5处于下翻状态，底部踏板1的后端搁置在最下端的底 部后轴3上，底部后轴3嵌入底部踏板1的限位凹槽12内，同时托块13的挡部131位于底部后轴3的下方，此时的底部踏板1作为踏板使用。
如图5、6所示，如作为工作平台使用时，一手拉动拉手15前移，拉手15带动托块13前移，托块13的挡部131前移脱离底部后轴3的下方，即挡部131不再对底部后轴3有约束作用，同时，手伸入底部踏板1的第一穿孔16并向上扳动，底部踏板1脱离底部后轴3，并从梯架本体的前方穿出再上翻，底部踏板1的上翻带动辅助支撑杆5上翻，直至将底部踏板1翻至梯架本体的上方，再将底部踏板1的后端搁置在辅助轴部6上，辅助轴部6嵌入底部踏板1的限位凹槽12内，推动拉手15后移，拉手15带动托块13后移，托块13的挡部131后移至辅助轴部6下方，将底部踏板1的后端约束在辅助轴部6上。底部踏板1的前端被辅助支撑杆5支撑，底部踏板1的后端被辅助轴部6支撑，这样底部踏板1可作为工作平台使用，工作平台能让我们在平台上进行例如锯、切、刻等工作。
如图7所示，折收时，手伸入上部踏板2的第二穿孔21内并上拉上部踏板2，上部踏板2后端脱离底部后轴3并上移，同时将前梯杆7和后梯杆8合拢，上部踏板2通过上连杆11和下连杆12带动底部踏板1一起上移，直至收拢，收拢方式和现有工作梯类似。
尽管以上详细地描述了本发明的优选实施例，但是应该清楚地理解，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种可作为工作平台使用的工作梯，包括能张开和收拢的梯架本体，及设于梯架本体内并能被折收的踏板组件；
    其特征在于：
    所述踏板组件包括上下间隔设置的至少两块踏板及供各踏板后端搁置的后轴，位于最下端的踏板为底部踏板(1)，位于底部踏板(1)上方的踏板为上部踏板(2)，所述后轴分为供底部踏板(1)后端搁置的底部后轴(3)及供上部踏板(2)后端搁置的上部后轴(4)；
    所述梯架本体的前部转动设置有两根能上下翻转的辅助支撑杆(5)，所述底部踏板(1)的前端转动设置在两所述辅助支撑杆(5)之间，所述梯架本体的顶部设有横向设置供底部踏板(1)的后端搁置的辅助轴部(6)；
    在辅助支撑杆(5)下翻状态下，底部踏板(1)的后端搁置在最下端的底部后轴(3)上；
    在辅助支撑杆(5)上翻状态下，底部踏板(1)上移至梯子本体的顶部，同时底部踏板(1)的后端搁置在所述辅助轴部(6)上。
  2. 根据权利要求1所述的工作梯，其特征在于：所述梯架本体包括两左右间隔设置的前梯杆(7)和后梯杆(8)，位于同一侧前梯杆(7)和后梯杆(8)的顶部相互铰接在一起，所述辅助支撑杆(5)转动设置在前梯杆(7)的前端面上。
  3. 根据权利要求2所述的工作梯，其特征在于：所述上部踏板(2)的前端转动设置在两前梯杆(7)之间，上部后轴(4)固定在两后梯杆(8)之间，与底部踏板(1)相邻的上部踏板(2)的左右两侧转动连接有上连杆(11)，两后梯杆(8)的下部转动连接有下连杆(12)，同侧的上连杆(11)和下连杆(12)的端部通过转轴共同转动连接在所述底部后轴(3)的一侧。
  4. 根据权利要求3所述的工作梯，其特征在于：两所述前梯杆(7)上各固定有呈U形的固定片(10)，所述上部踏板(2)的前端左右两侧分别转动设置在固定片(10)上，所述辅助支撑杆(5)则转动设置在固定片(10)的U形槽内。
  5. 根据权利要求2所述的工作梯，其特征在于：位于同一侧的所述前梯杆(7)和后梯杆(8)的顶部通过连接件(9)相互铰接在一起，所述连接件(9)固定在前梯杆(7)的顶部，所述后梯杆(8)的顶端转动连接在连接件(9)上。
  6. 根据权利要求1所述的工作梯，其特征在于：所述底部踏板(1)上开有方便手伸入扳动的第一穿孔(16)，上部踏板(2)上开有方便手伸入扳动的第二穿孔(21)。
  7. 根据权利要求1所述的工作梯，其特征在于：与底部踏板(1)相邻的上部踏板(2)的前端面具有向后内凹的凹部(22)。
  8. 根据权利要求1～6任一所述的工作梯，其特征在于：所述底部踏板(1)的底面设置有用以与底部后轴(3)或辅助轴部(6)可脱卸连接的连接结构。
  9. 根据权利要求8所述的工作梯，其特征在于：所述连接结构包括托块(13)及驱动托块(13)前后滑移的驱动结构，所述底部踏板(1)的底面具有沿其宽度方向贯穿的外形与 底部后轴(3)或辅助轴部(6)相配的限位凹槽(12)，所述托块(13)约束在底部踏板(1)的底面并能前后滑移，托块(13)的后部具有延伸至限位凹槽(12)下方的挡部(131)，在底部后轴(3)或辅助轴部(6)置于限位凹槽(12)内的状态下，所述挡部(131)位于底部后轴(3)或辅助轴部(6)的下方。
  10. 根据权利要求9所述的工作梯，其特征在于：所述驱动结构包括固定在托块(13)上的拉杆(14)，拉杆(14)约束在底部踏板(1)的底面并能前后滑移，拉杆(14)的末端连接有拉手(15)，拉手(15)也约束在底部踏板(1)的底面并能前后滑移：
    所述托块(13)有两块，所述拉杆(14)呈U形，拉杆(14)的两个直杆部上各固定一个所述托块(13)，所述拉手(15)则与拉杆(14)的横杆部的中部连接。
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