CN211737017U - Building board ladder that can stretch and adjust - Google Patents

Abstract

The utility model discloses a but building stretching regulation's board ladder, including first board ladder, the rear end surface of first board ladder is equipped with the second board ladder, the top of first board ladder is equipped with the connecting rod, the bottom surface of first board ladder has the link through the bolt fastening, the outward appearance welding of link has the connecting axle, and the surface cover of connecting axle is equipped with the torsional spring, the surface cover of torsional spring is equipped with the dead lever, the bottom of dead lever is equipped with locking mechanical system, the rear end surface of second board ladder is seted up flutedly, the inboard even welding of recess has spacing latch. The utility model discloses be convenient for quick tensile regulation board ladder height improves fixed knot and constructs stability, improves the safety in utilization, keeps away from spacing latch through pulling the dead lever, removes the dead lever spacing to spacing latch, all can make first board ladder can stretch the height-adjusting on the dead lever, and then reaches the effect of the quick tensile regulation board ladder height of being convenient for.

Description

Building board ladder that can stretch and adjust

Technical Field

The utility model relates to a ladder technical field specifically is a building ladder of regulation of can stretching.

Background

The plate ladder is one of ladders, mainly used for construction sites.

Present board ladder mainly has straight board ladder and fifty percent discount ladder volume two kinds, fifty percent discount ladder stability is better, present to the companion ladder when using, highly fixed, unable convenient tensile height-adjusting, when needs increase, need tie up two sets of ladders together, influence stability, potential safety hazard has, also have through the fixed two sets of board ladders of buckle formula, however this kind of fixed mode does not have locking structure, the easy dropout, do not use the building site to use, therefore need to design a board ladder that the building can stretch and adjust urgently to solve above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a but building stretching adjusts's board ladder to the unable convenient tensile regulation board ladder height that provides in solving above-mentioned background art, fixed knot constructs the problem that is not stable enough, has the potential safety hazard.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a but building stretching regulation's board ladder, includes first board ladder, the rear end surface of first board ladder is equipped with the second board ladder, the top of first board ladder is equipped with the connecting rod, the bottom surface of first board ladder has the link through the bolt fastening, the outward appearance welding of link has the connecting axle, and the surface cover of connecting axle is equipped with the torsional spring, the surface cover of torsional spring is equipped with the dead lever, the bottom of dead lever is equipped with locking mechanical system, the rear end surface of second board ladder is seted up flutedly, the inboard even welding of recess has spacing latch.

Preferably, the quantity of first board ladder is two sets of, the both sides surface of first board ladder all is connected with first connecting rod through the pivot, the other end of first connecting rod rotates through the pivot and is connected with the second connecting rod, and the top of second connecting rod rotates through pivot and another first board ladder of group and is connected.

Preferably, the connecting rod is of a semicircular structure, and the bottom end of the connecting rod is rotatably connected with the first plate ladder through a rotating shaft.

Preferably, the fixed rod is of an L-shaped structure, and the top end of the fixed rod is clamped with the limiting latch.

Preferably, the fixed rod and the connecting shaft form a rotating structure, one end of the torsion spring is fixedly connected with the connecting shaft, the other end of the torsion spring is fixedly connected with the fixed rod, and the fixed rod and the torsion spring form a rotating structure.

Preferably, locking mechanical system includes sleeve, gag lever post, spring and draw-in groove, telescopic one end is fixed with the surface welding of dead lever, telescopic inboard is run through and is provided with the gag lever post, the surface cover of gag lever post is equipped with the spring, elastic construction is constituteed with the spring to the gag lever post, the draw-in groove has been seted up to the surface of link, the gag lever post is fixed with the draw-in groove interpolation.

Compared with the prior art, the beneficial effects of the utility model are that: this but extension of building board ladder of adjusting is convenient for quick tensile regulation board ladder height, improves fixed knot and constructs stability, improves the safety in utilization.

(1) The first board ladder can be stretched and adjusted in height on the fixed rod, and therefore the effect of conveniently and rapidly stretching and adjusting the height of the board ladder is achieved;

(2) be provided with locking mechanical system, through being equipped with locking mechanical system on the dead lever, make the dead lever when rotating, need stimulate the gag lever post earlier and keep away from the draw-in groove, just can remove the spacing of dead lever, effectually prevented in the use, because the maloperation causes the problem of dropout, and then improves fixed knot and constructs stability, improves the safety in utilization.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic side view of the structure of the present invention;

FIG. 3 is a side view of the structure of the present invention;

fig. 4 is a schematic top view of the structure of the connection frame in fig. 1 according to the present invention;

fig. 5 is an enlarged schematic view of the structure at a in fig. 2 according to the present invention;

fig. 6 is a front cross-sectional view of the locking mechanism of fig. 1 according to the present invention; .

In the figure: 1. a first board ladder; 2. a second ladder; 3. a connecting rod; 4. a connecting frame; 5. fixing the rod; 6. a locking mechanism; 61. a sleeve; 62. a limiting rod; 63. a spring; 64. a card slot; 7. a first link; 8. a second link; 9. a groove; 10. limiting latch teeth; 11. a connecting shaft; 12. a torsion spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides an embodiment: the utility model provides a but extension regulation's board ladder is built to building, including first board ladder 1, the rear end surface of first board ladder 1 is equipped with second board ladder 2, the quantity of first board ladder 1 is two sets of, the both sides surface of first board ladder 1 all is connected with first connecting rod 7 through the pivot, the other end of first connecting rod 7 rotates through the pivot and is connected with second connecting rod 8, and the top of second connecting rod 8 rotates through pivot and another group's first board ladder 1 and is connected, as shown in figure 2-3, first board ladder 1 all is two sets of with the quantity of second board ladder 2, and laminate each other and be in the same place, through be connected with first connecting rod 7 and second connecting rod 8 between two sets of first board ladders 1, make two sets of first board ladders 1 expand the back, first connecting rod 7 can follow the expansion with second connecting rod 8, and can restrict the expansion angle of two sets of first board ladders 1.

The top of first board ladder 1 is equipped with connecting rod 3, and connecting rod 3 semicircular structure, and the bottom of connecting rod 3 rotates through pivot and first board ladder 1 to be connected, is connected with connecting rod 3 through rotating on the top of two sets of first board ladders 1, further improves the connection stability between two sets of first board ladders 1.

The outer surface of the bottom end of the first plate ladder 1 is fixedly provided with a connecting frame 4 through bolts, the outer surface of the connecting frame 4 is welded with a connecting shaft 11, the outer surface of the connecting shaft 11 is sleeved with a torsion spring 12, the outer surface of the torsion spring 12 is sleeved with a fixed rod 5, the bottom end of the fixed rod 5 is provided with a locking mechanism 6, the locking mechanism 6 comprises a sleeve 61, a limiting rod 62, a spring 63 and a clamping groove 64, one end of the sleeve 61 is fixedly welded with the outer surface of the fixed rod 5, the inner side of the sleeve 61 is provided with the limiting rod 62 in a penetrating manner, the outer surface of the limiting rod 62 is sleeved with the spring 63, the limiting rod 62 and the spring 63 form an elastic structure, the outer surface of the connecting frame 4 is provided with the clamping groove 64, the limiting rod 62 is fixedly inserted into the clamping groove 64, the fixed rod 5 can be fixedly connected with the connecting frame, the stopper rod 62 can be always kept in the state shown in fig. 6 when no external force is applied.

Recess 9 has been seted up to the rear end surface of second board ladder 2, the inboard even welding of recess 9 has spacing latch 10, dead lever 5 is "L" shape structure, and the top and the 10 block of spacing latch of dead lever 5, dead lever 5 constitutes revolution mechanic with connecting axle 11, the one end and the connecting axle 11 of torsional spring 12 are connected fixedly, the other end and the dead lever 5 of torsional spring 12 are connected fixedly, revolution mechanic is constituteed with torsional spring 12 to dead lever 5, as shown in fig. 5, torsional spring 12 plays the effect of providing the elasticity for dead lever 5, make dead lever 5 when no external force application, can remain as shown in fig. 5 state throughout, through dead lever 5 and the 10 block of spacing latch, can make link 4 be connected admittedly with second board ladder 2.

The working principle is as follows: when the folding ladder is used, after the two groups of first plate ladders 1 are unfolded in a splayed shape by unfolding the first plate ladders 1, the first plate ladders 1 can be stably placed on the ground, so that a user can climb;

when the height of the first board ladder 1 needs to be adjusted in a stretching mode, the clamping groove 64 is kept away from only by pulling the limiting rod 62 outwards, the fixing rod 5 is removed after limiting, the fixing rod 5 is pulled again to be kept away from the limiting latch 10, the limiting of the fixing rod 5 to the limiting latch 10 is removed, and the first board ladder 1 can be adjusted in the stretching mode on the fixing rod 5 in a stretching mode, and therefore the stretching adjusting height is practical.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. A building extension adjustable ladder comprises a first ladder (1), and is characterized in that: the rear end surface of first board ladder (1) is equipped with second board ladder (2), the top of first board ladder (1) is equipped with connecting rod (3), the bottom surface of first board ladder (1) has link (4) through the bolt fastening, the outward appearance welding of link (4) has connecting axle (11), and the surface cover of connecting axle (11) is equipped with torsional spring (12), the surface cover of torsional spring (12) is equipped with dead lever (5), the bottom of dead lever (5) is equipped with locking mechanical system (6), the rear end surface of second board ladder (2) is seted up flutedly (9), the inboard even welding of recess (9) has spacing latch (10).

2. A telescopically adjustable escalator as claimed in claim 1, wherein: the quantity of first board ladder (1) is two sets of, the both sides surface of first board ladder (1) all is connected with first connecting rod (7) through the pivot, the other end of first connecting rod (7) rotates through the pivot and is connected with second connecting rod (8), and the top of second connecting rod (8) rotates through pivot and another first board ladder (1) of group and is connected.

3. A telescopically adjustable escalator as claimed in claim 1, wherein: the connecting rod (3) is of a semicircular structure, and the bottom end of the connecting rod (3) is rotatably connected with the first plate ladder (1) through a rotating shaft.

4. A telescopically adjustable escalator as claimed in claim 1, wherein: the fixing rod (5) is of an L-shaped structure, and the top end of the fixing rod (5) is clamped with the limiting clamping teeth (10).

5. A telescopically adjustable escalator as claimed in claim 1 or 4, wherein: dead lever (5) and connecting axle (11) constitute revolution mechanic, the one end and connecting axle (11) of torsional spring (12) are connected fixedly, the other end and the dead lever (5) of torsional spring (12) are connected fixedly, revolution mechanic is constituteed with torsional spring (12) dead lever (5).

6. A telescopically adjustable escalator as claimed in claim 1, wherein: locking mechanical system (6) are including sleeve (61), gag lever post (62), spring (63) and draw-in groove (64), the one end of sleeve (61) and the outer surface welded fastening of dead lever (5), the inboard of sleeve (61) is run through and is provided with gag lever post (62), the surface cover of gag lever post (62) is equipped with spring (63), elastic construction is constituteed with spring (63) gag lever post (62), draw-in groove (64) have been seted up to the surface of link (4), gag lever post (62) and draw-in groove (64) are inserted and are closed fixedly.

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