CN2779028Y

CN2779028Y - Sliding self-locking aerial ladder

Info

Publication number: CN2779028Y
Application number: CN 200520090100
Authority: CN
Inventors: 赵曜
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-06
Filing date: 2005-04-06
Publication date: 2006-05-10
Anticipated expiration: 2015-04-06

Abstract

The utility model relates to a sliding self-locking aerial ladder, which belongs to fire fighting equipment. The utility model is composed of a ladder body (8), extension ladders (2), extension ladder cross beams (3), ladder body cross beams (9), a fixing and a moving pulleys (4), (11) and a locking fork (7), wherein two small shafts (13) are fixed on the upper ends of the two extension ladders (2), and ratchet wheels (1) which only rotate to one direction are arranged on the small shafts (13); pointed teeth are arranged on the circumference of each ratchet wheel (1). When fire fighters extend the sliding self-locking aerial ladder, the ratchet wheels are smartly rolled along a wall surface, so the fire fighters save labor; after the sliding self-locking aerial ladder is extended to a target, as the pointed teeth are arranged on the circumference of each ratchet wheel, the sliding self-locking aerial ladder can be firmly combined with the wall surface. Thus, the sliding self-locking aerial ladder is not easy to slide down and slide to one side, which is favorable to the fire fighters to safely work.

Description

Slip self-locking aerial ladder

Technical field

The utility model belongs to fire fighting equipment, particularly a kind of slip self-locking aerial ladder.

Technical background

At present, the aerial ladder that the fire fighter uses when fire fighting, be that a few joint telescopic ladders are combined, the several people lifts aerial ladder and pushes away along metope is upwards sliding during use, effort very, as require great effort more when running into obstruction or rough and uneven in surface metope, even frame puts in place, owing to do not have self-locking device between ladder and the metope, the fire fighter is still potential downslide or Sideslip when climbing or operation, and is unfavorable to fire fighter's safety.

Summary of the invention

The purpose of this utility model is to overcome above-mentioned technical deficiency, and a kind of laborsaving, safe slip self-locking aerial ladder is provided.

The technical scheme that the utility model technical solution problem adopts is: a kind of by terraced body, extension ladder, horizontally hold, decide, movable pulley and lock pitch the slip self-locking aerial ladder of forming, be characterized at two fixing little axles in extension ladder upper end, being equipped with on little axle can only be to the ratchet of a direction rotation, and the ratchet circumference is provided with pointed tooth.

The beneficial effects of the utility model are: the fire fighter uses this aerial ladder, during stretching, ratchet rolls neatly along metope, very laborsaving, after putting in place because the ratchet circumference is provided with pointed tooth, can with more firm the combining of metope, be difficult for downslide and, help fire fighter's work safety to a sideslip.

Description of drawings

Specify with embodiment below in conjunction with accompanying drawing.

Fig. 1 shows slip self-locking aerial ladder structural front view.

Among the figure, the 1-ratchet; The 2-extension ladder; The 3-extension ladder is horizontal to be held; The 4-fixed pulley; The 5-stay cord; The 6-spring; 7-locks fork; 8-ladder body; Body is horizontal holds for 9-ladder; 10-prevents sliding sleeve; The 11-movable pulley; 12-locks forked standard; The little axle of 13-

The specific embodiment

With reference to accompanying drawing, slip self-locking aerial ladder is between two terraced bodies 8, be fixed with five with rivet and horizontally hold 8, cover two anti-sliding sleeves 10 in lower end increase its frictional force, the terraced approximately body in upper end is horizontal to be held 9 and fixes a fixed pulley 4, and terraced body 8 is a channel-section, and extension ladder 2 is housed in the groove versatilely; Fix with rivet between two extension ladders 2 that five extension ladders are horizontal to hold 3, horizontal the holding of the extension ladder of lower end fixed a movable pulley 11 and two lock forked standards 12 on 3, the spring 6 of lock fork 7 and control lock fork 7 is housed on lock forked standard 12 versatilely; Fix a little axle 13 two extension ladder 2 upper ends, being equipped with on little axle 13 can only be to the ratchet 1 of a direction rotation, ratchet 1 is provided with pointed tooth, on movable and fixed pulley 11,4, be installed with a stay cord 5, one end is fixed on extension ladder 2 topmost extension ladder is horizontal and holds on 3, the other end freely hangs down, during use, the ratchet on the ladder 1 is contacted with wall, Yi Bian stay cord 5, upwards push away ladder on one side, after putting in place, lock fork 7 blocks that terraced body on the terraced body 8 is horizontal to hold 9, and extension ladder 2 is maintained static, with the pointed tooth card of ratchet 1 on the wall, get final product work.

Claims

1, a kind of slip self-locking aerial ladder, by terraced body (8), extension ladder (2), extension ladder is horizontal holds (3), terraced body is horizontal holds (9), decide movable pulley (4), (11) and lock fork (7) are formed, it is characterized in that fixing two little axles (13) in two extension ladders (2) upper end, being equipped with on little axle (13) can only be to direction ratchet (1) rotationally, and ratchet (1) circumference is provided with pointed tooth.