CN206033082U - Cat ladder hydraulic pressure safety device - Google Patents

Abstract

The utility model provides a cat ladder hydraulic pressure safety device, a cat ladder hydraulic pressure safety device includes the screwed pipe, go up from lock tube, hydraulic system from lock tube, jack catch under, the last lower extreme of hydraulic system is connected respectively from the lock tube under the lock tube reaches, the jack catch is fixed on the screwed pipe, and the jack catch other end is fixed in the standard on the festival simultaneously, the utility model discloses a holding capacity is big, and it is steady to rise, because of hydraulic system easily cushions, does not have rigidity impact load, and life is than longer, the closed transmission medium of hydraulic system for the maintenance is maintained simply, has reduced use cost, and factor of safety is high, for the operator that climbs to a higher point provides powerful security assurances, has stopped to send out the industrial accident that aspects such as cunning, health reason caused because of careless and inadvertent, cat ladder.

Description

A kind of cat ladder fluid pressure warning device

Technical field：

This utility model is related to derrick crane security control field, specially a kind of cat ladder fluid pressure warning device.

Background technology：

Tower crane is the main heavy construction machinery of construction site, because of its lifting altitude height, broad covered area, efficiency height etc. Feature and be widely used, especially in high-building construction, tower crane is raised with its superior lifting transport performance, good rising Degree and work range, become one of transporting equipment main in project construction, are responsible for main vertical transport task.

Though existing building job site using derrick crane have triangle iron net circle, there is provided what personnel rested up and down Platform, but derrick crane peace is when tearing the upper and lower vertical ladder of personnel and driver open, during the moist skidding of absent minded or ladder, holds Easily step on sky to fall, that is, allow to fall on triangle iron net circle, also result in high pendant casualty accident and occur, exist than larger Potential safety hazard.

Utility model content：

For solving the above problems, the utility model proposes a kind of cat ladder fluid pressure warning device, a kind of cat ladder hydraulic pressure Safety device include corrugated tubing, on from lock tube, hydraulic system, under connect from lock tube, claw, the hydraulic system upper and lower side respectively On from lock tube and under from lock tube, the claw is fixed on corrugated tubing, and the claw other end is fixed on standard knot, the hydraulic pressure system System is made using telescoping hydraulic cylinder principle, and the expansion link of telescoping hydraulic cylinder adopts the strong corrosion resistant of high-strength aluminium-magnesium alloy profile Erosion, stroke is 40-75mm, and the centre-to-centre spacing of telescoping hydraulic cylinder is 200-250mm, and external diameter is 16-20mm, and the inside wall of cylinder adopts high pressure Abrasion-proof porcelain handling process sealed connection, the maximum pressure that can be born are 70-100Kg；

The screw thread tube end has female thread, and radius is 5-8mm, length 5-10mm slightly short than standard knot, and material is cast iron, After installation, the error of perpendicularity is less than 0.5%, relies on thread connection and be highly continuously increased between corrugated tubing, and corrugated tubing is thicker It is rough, roughness Ra》1；

On described from lock tube, under hinge is loaded onto by the hollow Taper Pipe joint of two symmetrical shapes respectively from lock tube, then Coupling pin is plugged, loads the elastic pellet of elastomeric material in Taper Pipe, the surface of the ball is relatively rough, roughness Ra》2, bead Taper Pipe bottom can be slided in Taper Pipe, but can not be slided at the top of Taper Pipe, this ensures that there from lock tube, under can only be past from lock tube Upper movement and can not move down, on from lock tube, under have small sircle hole from lock tube, small sircle hole can be hitched by nylon rope and be climbed The operating personnel for stepping on cat ladder.

The claw is fixed on the section corrugated tubing of highest one, while the claw other end is fixed on standard knot, at utmost Ground ensures the perpendicularity and stability of corrugated tubing.

The beneficial effects of the utility model are subject to power greatly, rise steadily, because hydraulic system is easily buffered, no rigid shock Load, service life are long, the closed transmission medium of hydraulic system so that maintenance is simple, reduces use cost, pacify Overall coefficient is high, provides strong safety assurance for the operator that climbs to a higher point, and has prevented to send out sliding, body original because of careless and inadvertent, cat ladder Because etc. the industrial accident that causes of aspect.

Description of the drawings：

Fig. 1 is a kind of cat ladder fluid pressure warning device schematic diagram described in the utility model；

Fig. 2 is a kind of the lower from lock tube left-half schematic elevation view of cat ladder fluid pressure warning device described in the utility model；

Fig. 3 is from lock tube left-half schematic top plan view under a kind of cat ladder fluid pressure warning device described in the utility model；

Specific embodiment：

A kind of cat ladder fluid pressure warning device include corrugated tubing 1, on from lock tube 3, hydraulic system 4, under from lock tube 6, card Pawl 10,4 upper and lower side of the hydraulic system connect respectively from lock tube 3 and under be fixed on corrugated tubing 1 from lock tube 6, the claw 10 On, the other end is fixed on standard knot, and the hydraulic system 4 is made using telescoping hydraulic cylinder principle；

Due on from lock tube 3, under from the tapered tube configuration feature of lock tube 6 so that the two nooses up can only be moved, no Can move down, on from lock tube 3, under the friction of elastic pellet 8 and corrugated tubing 1, such as Fig. 1, liquid is extruded from lock tube 6 from lock against When the expansion link of pressure system 4 extends, this set of self-locking at present 6 is forced downwards and there is self-locking, and it is upper from lock tube 3 by upwards Power and be moved, when hydraulic system 4 expansion link shorten when, now go up from lock tube 3 it is forced downwards and generation self-locking, Under be subject to power upwards from lock tube 6 and up move, with expansion link elongation and the circulation change for shortening of hydraulic system 4, just Realize it is synchronous with operating personnel rise, it is described it is upper from lock tube 3, under to be provided with aperture 11 from lock tube 6 can be nylon rope, just realization The purpose of fixed operation personnel.When reach tower crane cab after, can release from lock tube 3, under carry out from the coupling pin of lock tube 6 Unblock.

Ultimate principle of the present utility model and principal character and advantage of the present utility model, one's own profession has been shown and described above The technical staff of industry it should be appreciated that this utility model is not restricted to the described embodiments, described in above-described embodiment and description Simply illustrate principle of the present utility model, on the premise of without departing from this utility model spirit and scope, this utility model is also Various changes and modifications are had, these changes and improvements are both fallen within the range of claimed this utility model, this utility model Claimed scope is by appending claims and its equivalent thereof.

Claims (2)

1. a kind of cat ladder fluid pressure warning device, it is characterised in that including corrugated tubing (1), on from lock tube (3), hydraulic system (4), Under from lock tube (6), claw (10), hydraulic system (4) upper and lower side connect respectively from lock tube (3) and under from lock tube (6), institute State claw (10) to be fixed on corrugated tubing (1), the other end is fixed on standard knot.

2. a kind of cat ladder fluid pressure warning device according to claim 1, it is characterised in that hydraulic system (4) expansion link Using high-strength aluminium-magnesium alloy profile strong corrosion resistant, stroke is 40-75mm, in hydraulic system (4) telescoping hydraulic cylinder Away from for 200-250mm, external diameter is 16-20mm to the heart, and the inside wall of cylinder adopts high-pressure anti-wear porcelain handling process sealed connection, can bear Maximum pressure is 70-100Kg.