CN2564724Y

CN2564724Y - Lift hook combining device for straight ladder

Info

Publication number: CN2564724Y
Application number: CN 02263038
Authority: CN
Inventors: 谢小燕
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-12
Filing date: 2002-07-12
Publication date: 2003-08-06
Anticipated expiration: 2012-07-12

Abstract

The utility model relates to a lifting-hook combining device for straight ladders, which comprises a lifting-hook combination and a connecting buckle plate, wherein, the lifting-hook combination is composed of a hook seat, a torsion spring, a hook plate, and a rivet, namely, the torsion spring and the hook plate are arranged at a sandwich layer of the hook seat, and are connected by the rivet; one end of the connecting buckle plate is a flanging, the other end is riveted on a support post, and the connecting buckle plate is divided into an upper connecting buckle plate and a lower connecting buckle plate. When the lifting-hook combining device for straight ladders is used, the lifting-hook combination is arranged on the inner side surface of the support post of an upper ladder, the connecting buckle plate is connected with the support post of the upper ladder and the support post of the lower ladder in a proper position. The support post of the upper ladder is adjusted with any heights, and the support post of the upper ladder is pressed downwards. The lower end of the hook plate is lapped and fixed with a pedal of the support post. The lifting-hook combining device for straight ladders is provided with an adjusted height.

Description

The drop hook composite set of vertical ladder

Technical field

The utility model relates to a kind of structure member of vertical ladder, specifically relates to a kind of drop hook composite set of vertical ladder.

Background technology

Being seen in the market vertical ladder is all determined the height of vertical ladder, in the differing heights operation according to different specifications, to change the vertical ladder that uses differing heights respectively, owing to will prepare multiple vertical ladder, so just cause expense to increase, to bring certain trouble to the operator.

Summary of the invention

The utility model overcomes the problem of above existence, from the structure design principle angle, proposes a kind of drop hook composite set of adjusting height, the convenient vertical ladder that uses.

Technical solution of the present utility model is achieved in that a kind of drop hook composite set of vertical ladder, and its special feature is to comprise drop hook combination, connection buckle.The drop hook combination is made up of hook seat, torsion spring, hook plate, rivet.Settle torsion spring and hook plate in the interlayer of hook seat, connect by rivet, the free-end of hook plate is inverted "L" shaped, and connecting buckle is upper and lower two, and the one end is a flange, and the other end is fixed on the pillar.The drop hook combination is fixed on the upper ladder pillar, last connection buckle one end is fixed on the descending stair pillar by rivet, and other end flange fastens upper ladder pillar, and following connection buckle one end is fixed on the upper ladder pillar by rivet, other end flange fastens the descending stair pillar, and upper ladder pillar moves up.

This shows that the utility model adopts the drop hook combination and is connected buckle, can arbitrarily adjust ideal height, very convenient use.

The specific embodiment

Below in conjunction with accompanying drawing utility model is further described.

Fig. 1 is the user mode figure of an embodiment of the present utility model.

Fig. 2 is that figure cuts open in the drop hook combination office of an embodiment of the present utility model.

Fig. 3 is the drop hook combination decomposition figure of an embodiment of the present utility model.

Among the figure: 1 drop hook makes up " L " 14 rivets 2 connection buckles 21 flange 22 holes 23 rivets, 3 upper ladder pillars, 4 descending stair pillars, 5 pedals of 132

torsion spring holes

133,12 torsion spring 13 hook plates, 131 holes, 112 fixing holes, 113 torsion spring holes, 11 hook seats, 111 hole

As can be known, a kind of hook combining device for straight of vertical ladder comprises that drop hook Zu closes from Fig. 1 Zhi Fig. 3 1 be connected buckle 2. Drop hook Zu closes 14 Zus of 1 You hook Zuo 11, torsion spring 12, hook plate 13, rivet Become, the interlayer of Zai hook Zuo 11 is settled torsion spring 12 and hook plate 13, by rivet 14 through hook Zuo hole 111 Be connected Yu hook plate hole 131, the free-end of hook plate 13 is down " L " 133, and the upper footmuff of torsion spring 12 enters On the torsion spring hole 132 of hook plate 13, the leftover bits and pieces of torsion spring 12 is stretched on the torsion spring 113 of hook Zuo 11, hook The fixing hole 112 of Zuo is riveted on the medial surface of upper ladder pillar 3 suitable positions; Connect buckle 2 You two Piece, an end You flange 21, other end riveting is connected on the Zhi Zhu.

During use, drop hook Zu closed 1 hook Zuo 11 Zong to being fixed on upper ladder pillar 3 appropriate locations Medial surface, with upper and lower two that connect buckle 2, one end flange 21 fastens respectively terraced Zhi Zhu 3 and descending stair Zhi Zhu 4, its other end is fixed respectively upper ladder pillar 3 and descending stair Zhi Zhu by rivet 4, mobile upper ladder pillar 3 when reaching satisfied height, presses down upper ladder pillar 3, " L " of hook plate 13 133 withstand pedal 5; Without the time, slightly mention upper ladder pillar 3, " L " 133 that fall breaks away from pedals 5, Namely restore to the original state.

The utility model also has other embodiment, can be pentagon or irregular polygon as the free-end of hook plate, and the simple equivalent replacement etc., all drop on protection domain of the present utility model.

Claims

1, a kind of drop hook composite set of vertical ladder is characterized in that: comprise the drop hook combination and be connected buckle.Described drop hook combination is made up of hook seat, torsion spring, hook plate, rivet, promptly settles torsion spring and hook plate in described hook seat interlayer, connects by rivet; One end of described connection buckle is a flange, and other end riveting is connected on the pillar.

2, the drop hook composite set of a kind of vertical ladder according to claim 1 is characterized in that: the free auspicious inverted "L" shaped that is of described hook plate.

3, the drop hook composite set of a kind of vertical ladder according to claim 1 is characterized in that: described connection buckle is two.