CN201507236U

CN201507236U - Ladder with turning board

Info

Publication number: CN201507236U
Application number: CN200920234091XU
Authority: CN
Inventors: 周根元
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-06
Filing date: 2009-08-06
Publication date: 2010-06-16
Anticipated expiration: 2019-08-06

Abstract

A ladder with a turning board comprises a main ladder rack, a support frame and a top pedal, wherein one side of the top pedal is hinged between two pillars of the main ladder rack and forms a turning board structure. The ladder is characterized in that the bottom surface of the top pedal and a transverse connecting part on the support frame are hinged via a connecting rod; a hook mechanism is arranged on the top pedal correspondingly to the transverse connecting part on the support frame,and comprises a hook component and a torsion spring; the hook component is hinged on the top pedal and provided with a hook part; and the torsion spring is sleeved on a pivot and acts between the hook component and the top pedal, so as to force the hook part to rotate toward the inner side of the top pedal. When the main ladder rack and the support frame are expanded into a herringbone state, the top pedal is overturned and presents a horizontal state, and the hook part of the hook component is hooked and locked on the transverse connecting part on the support frame from outside to inside. In the utility model, the hook mechanism is particularly designed, and can be unlocked only when an operator presses an operation part, so that both the stability and the security are greatly improved.

Description

The turnover panel ladder

Technical field

The utility model relates to ladder, particularly a kind of ladder capable of standing by themse of one-sided climbing (also claiming the turnover panel ladder).

Background technology

The self-supporting ladder of aluminium alloys herringbone self-supporting ladder, particularly one-sided climbing, its structure is light, has become common family expenses ladder, and people ascend a height with it and pick and place the eminence article, or the light fixture of repairing eminence, ceiling fan etc.

The self-supporting ladder (hereinafter to be referred as the turnover panel ladder) of existing one-sided climbing is made up of main ladder support, bracing frame and top pedal, and main ladder support comprises two pillars, and the upper end of two pillars connects with horizontal handrail, between the middle part with the connection of marking time; Bracing frame connects the horizontal material that connects by two intercolumniations and constitutes the two pillars upper end of bracing frame and two pillar upper articulations of main ladder support; Described top pedal is an aluminium sheet, and two intercolumniations that the one side is hinged on main ladder support constitute the turnover panel structure, and the horizontal connection material on the corresponding bracing frame is offered groove on the opposite side bottom surface; When main ladder support and bracing frame were launched into herringbone, the top pedal was turned down horizontal, rode on the horizontal connection material on the bracing frame with the groove of one side, and ladder is positioned at the herringbone deployed condition.Though this kind turnover panel ladder is simple in structure, its stability in use, safety are relatively poor, and when being subjected to external force such as operator to step on inclined to one side top pedal, the top pedal is easily dug, and destroys the deployed condition of ladder, causes the safety accident.

Summary of the invention

The utility model purpose provides a kind of turnover panel ladder, to improve turnover panel ladder stability in use.

For achieving the above object, the technical solution adopted in the utility model is: a kind of turnover panel ladder, form by main ladder support, bracing frame and top pedal, main ladder support comprises two pillars, the upper end of two pillars connects with horizontal handrail, between its underpart with the connection of marking time; Bracing frame connects the horizontal material that connects by two intercolumniations and constitutes the two pillars upper end of bracing frame and two pillar upper articulations of main ladder support; Two intercolumniations that described top pedal one side is hinged on main ladder support constitute the turnover panel structure; The bottom surface of described top pedal and connecting horizontal the connection between the material on the bracing frame with rod hinge connection; And the horizontal connection material on the pedal of top on the also corresponding bracing frame is provided with hitch gear, and this hitch gear is made of hook part and torsion spring; Described hook part by along the pivot knuckles of horizontally set on the pedal of top, hook part is provided with the hook portion towards inboard, pedal bottom surface, top; Described torsion spring is placed in and acts on the pivot between hook part and the top pedal, force hook portion to the inboard rotation of top pedal, when main ladder support and bracing frame are launched into the herringbone state, the top pedal is turned down horizontal, the hook portion of hook part is hooked in from outside to inside on the horizontal connection material on the bracing frame and locks, and also is provided with unlocking operation portion on the described hook part.

Related content in the technique scheme is explained as follows:

1, in the such scheme, the hook portion bottom surface of described hook part is provided with and laterally is connected the guide effect inclined-plane that the material top cooperates, and this guide effect inclined-plane is connected the cooperation that offsets of material top and makes hook part overcome spring force to rotate outside the pedal of top with horizontal when turning under the pedal of top.Further, described hook part side is other can be provided with spacing preiection, and the corresponding blocking surface that faces the outside, pedal edge, top that is provided with on the pedal of top, spacing preiection is conflicted to cooperate with blocking surface and is constituted the position limiting structure of hook part on the inboard rotation direction of top pedal, make hook part under nature, keep plumbness with this, make the guide effect inclined-plane on it relative with horizontal connection material tip position.

Because the technique scheme utilization, the utility model compared with prior art has following advantage:

1, because the utility model designs the herringbone holding state that hitch gear locks the turnover panel ladder especially, but has only operating personnel to press the just release of unlocking operation portion, its stability in use and safety are significantly improved.

2, because the utility model horizontal on the bottom surface of top pedal and bracing frame is connected between the material with the rod hinge connection connection, make after the release promptly to drive bracing frame when the top pedal dug and main ladder support closes up, folding operation is settled at one go, convenient.

3, the utility model is simple in structure, practical, makes also more convenient.

Description of drawings

Accompanying drawing 1 launches the holding state schematic diagram for the utility model herringbone;

Accompanying drawing 2 launches holding state to the transition state schematic diagram that closes up between folded state for the utility model herringbone;

Accompanying drawing 3 closes up the folded state schematic diagram for the utility model;

Accompanying drawing 4 is part decomposing schematic representations such as the utility model top pedal, connecting rod, hitch gear;

Accompanying drawing 5 is the cross-sectional schematic of top pedal under the utility model hitch gear lock-out state;

Accompanying drawing 6 is the partial schematic diagram of the utility model main ladder support.

In the above accompanying drawing: 1, main ladder support; 2, bracing frame; 3, top pedal; 4, pillar; 5, horizontal handrail; 6, mark time; 7, pillar; 8, laterally connect material; 9, hook part; 10, torsion spring; 11, pivot; 12, hook portion; 13, guide effect inclined-plane; 14, connecting rod; 15, pillar reinforcement material; 16, unlocking operation portion; 17, spacing preiection; 18, blocking surface.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment: as Fig. 1～shown in Figure 6, a kind of turnover panel ladder is made up of main ladder support 1, bracing frame 2 and top pedal 3, and main ladder support 1 comprises that the upper end of two pillars, 4, two pillars 4 connects with

horizontal handrail

5,6 connects to mark time between its underpart; Bracing frame 2 connects laterally by 7 on two pillars, and connection material 8 constitutes two pillars, 4 upper articulations of two pillars, 7 upper ends of bracing frame 2 and main ladder support 1.

As Fig. 1～shown in Figure 3,4 on two pillars that described top pedal 3 one sides are hinged on main ladder support 1 constitute the turnover panel structure, and the horizontal connection material 8 on its opposite side on the corresponding bracing frame 2 is provided with hitch gear, and this hitch gear is made of hook part 9 and two torsion springs 10; Described hook part 9 is articulated on the top pedal 3 by the pivot 11 of both sides along horizontally set, and hook part 9 is provided with the hook portion 12 towards inboard, top pedal 3 bottom surface; Described two torsion springs 10 respectively are placed on the pivot 11 and act between hook part 9 and the top pedal 3, force hook part 9 to top pedal 3 inboard rotations; When main ladder support 1 and bracing frame 2 are launched into the herringbone state, top pedal 3 is turned down horizontal, the hook portion 12 of hook part 9 is hooked in locking on the horizontal connection material 8 on the bracing frame 2 from outside to inside, also be provided with unlocking operation portion 16 on the described hook part 9, push this unlocking operation portion 16 and make hook part 9 overcome the elastic force counter-rotating release of torsion spring 10.

And, shown in accompanying drawing 5, hook portion 12 bottom surfaces of described hook part 9 are provided with and laterally are connected the guide effect inclined-plane 13 that material 8 tops cooperate, this guide effect inclined-plane 13 makes hook part 9 overcome spring force to rotate outside the pedal of top with laterally being connected the cooperation that offsets of material 8 tops automatically when the operator turns over the top pedal for 3 times, and hook portion 12 is crossed horizontal connection material 8.Shown in accompanying

drawing

2,3,4, the both lateral sides of described hook part 9 respectively is provided with a spacing preiection 17, and the also corresponding blocking surface 18 that faces the outside, top pedal 3 edges that is provided with on the top pedal 3, two spacing preiections 17 cooperate with the 18 corresponding conflicts of two blocking surfaces, constitute the position limiting structure of hook part 9 on the inboard rotation direction of top pedal, make nature lower draw-bar parts 9 can keep plumbness with this, make the guide effect inclined-plane 13 on it relative with horizontal connection material 8 tip positions.

Shown in accompanying drawing 2, accompanying drawing 3, accompanying drawing 4, the bottom surface of described top pedal and being articulated and connected horizontal the connection between the material on the bracing frame with two connecting rods 14, make after the release promptly to drive bracing frame 2 when top pedal 3 dug and main ladder support 1 closes up, folding operation is settled at one go.

Shown in accompanying drawing 6, be to increase the load-bearing property of main ladder support 1, the pillar of main ladder support 14 is inner correspondingly to be nested with pillar reinforcement material 15 with 6 the junction of marking time.

Present embodiment as shown, is shorter double-deck turnover panel ladder example, wherein marks time 6 only to be one, and main ladder support 1 height can increase certainly, marks time and 6 can be designed to two even more along with the increase of height, changes with this three layers, four layers even more multi-layered turnover panel ladder.

The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model spirit essence change or modify, and all should be encompassed within the protection domain of the present utility model.

Claims

1. a turnover panel ladder is made up of main ladder support, bracing frame and top pedal, and main ladder support comprises two pillars, and the upper end of two pillars connects with horizontal handrail, between its underpart with the connection of marking time; Bracing frame connects the horizontal material that connects by two intercolumniations and constitutes the two pillars upper end of bracing frame and two pillar upper articulations of main ladder support; Two intercolumniations that described top pedal one side is hinged on main ladder support constitute the turnover panel structure; It is characterized in that: the bottom surface of described top pedal and connecting horizontal the connection between the material on the bracing frame with rod hinge connection; And the horizontal connection material on the pedal of top on the also corresponding bracing frame is provided with hitch gear, and this hitch gear is made of hook part and torsion spring; Described hook part by along the pivot knuckles of horizontally set on the pedal of top, hook part is provided with the hook portion towards inboard, pedal bottom surface, top; Described torsion spring is placed in and acts on the pivot between hook part and the top pedal, forces hook part to the inboard rotation of top pedal; When main ladder support and bracing frame were launched into the herringbone state, the top pedal was turned down horizontal, and the hook portion of hook part is hooked in from outside to inside on the horizontal connection material on the bracing frame and locks, and also is provided with unlocking operation portion on the described hook part.

2. according to the described turnover panel ladder of claim 1, it is characterized in that: the hook portion bottom surface of described hook part is provided with and laterally is connected the guide effect inclined-plane that the material top cooperates, and this guide effect inclined-plane is connected the cooperation that offsets of material top and makes hook part overcome spring force to rotate outside the pedal of top with horizontal when turning under the pedal of top.

3. according to the described turnover panel ladder of claim 2, it is characterized in that: the other spacing preiection that is provided with of described hook part side, and the corresponding blocking surface that faces the outside, pedal edge, top that is provided with on the pedal of top, spacing preiection is conflicted to cooperate with blocking surface and is constituted the position limiting structure of hook part on the inboard rotation direction of top pedal.