CN201240735Y

CN201240735Y - Stopper for preventing skip from incontrollable falling

Info

Publication number: CN201240735Y
Application number: CNU2008201501375U
Authority: CN
Inventors: 卢江海; 杨琳; 茅新东
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2008-06-27
Filing date: 2008-06-27
Publication date: 2009-05-20
Anticipated expiration: 2018-06-27

Abstract

The utility model relates to a lifter safety device. A stopper used for preventing a skip car from dropping out of control comprises a seat frame, a batten, a first piston, a second piston, a bayonet pin, a first spring and a second spring. The seat frame is arranged on a track of the skip car; the batten is arranged on the surface of the seat frame, with the middle part protruding; the head of the first piston presses the backside of the protruding part of the batten, and the back part is stuck at a first cavity at the middle part of the seat frame; the first spring is arranged at the tail end of the first piston; the second spring is arranged in a second cavity on the seat frame; which is located below the batten; an air guide vent is communicated with the first cavity and the second cavity; the second spring is arranged at the tail end of the second piston; a small hole is arranged above the second cavity, and the bayonet pin is arranged in the small hole; an air exit hole is arranged below the second cavity; the air exit hole is communicated with the second cavity; the section area of the second piston is smaller than that of the first piston; and the diameter of the air exit hole is smaller than that of the air guide hole. The lifter safety device can effectively prevent the skip car from dropping out of control and is convenient to use.

Description

Be used to prevent the truck stopper that falls out of control

Technical field

The utility model relates to a kind of safeguard device of elevator, in particular for the truck that the prevents loaded material stopper that falls out of control.

Background technology

The truck that many equipment are used for loaded material is the reciprocating apparatus of roller type up and down of vertical-lift, in case be in operation stay cord fracture or the driving device of deceleration usefulness and the fault of brake gear, the major accident that will cause cart vertical to fall down takes place.Because the general machinery that draws high all is two-way reciprocation cycle operation usually, and the holdback that is applicable to unidirectional cycle operation can't be set.Present safety measure mainly is the groundwork part (as steel wire tow line, reductor, brake gear etc.) that draws high truck to be carried out regular detection change, to guarantee interim operation serviceability rate.

Common man lift's stop mechanism mainly is the safety tongs stop mechanism, and this mechanism realizes by control circuit, and cost is higher.Chinese patent CN2045730U discloses the safety device that a kind of simple and easy Cargo Lift stops, comprise apparatus body and analog bracket, movable journal stirrup is arranged in the apparatus body, and movable journal stirrup is by electromagnet and spring device control, and it can support Cargo Lift by fixed support and not drop when Cargo Lift is out of control.Though this safety device cost reduces, but still be to lead on the original control circuit of Cargo Lift, to increase safety control circuit realization control, be not suitable for and only make the simple truck of the loaded material of operation up and down.

The utility model content

The purpose of this utility model is to provide a kind of truck stopper that falls out of control that is used to prevent, this stopper can actv. prevention truck is out of control falls, safe and reliable, simple in structure.

The utility model is achieved in that a kind of truck stopper that falls out of control that is used to prevent, comprise seat, press strip, first piston, second piston, bayonet lock, first spring and second spring, the oblong seat is arranged on the truck track, press strip is arranged on the seat surface towards track one side, heave at the press strip middle part, the first piston head withstands on the rear that press strip is heaved the place, the first piston rear portion is stuck in first cavity that has in the middle part of the seat by piston ring, first cavity gas port terminal and that seat inside has communicates, the first piston end is provided with first spring, this spring one end in contact first piston end, the other end are stuck in outside the terminal gas port of first cavity;

Second piston is arranged in second cavity that seat has by piston ring, second piston cross-section is long-pending less than the first piston sectional area, second cavity is positioned at the below of press strip, gas port is communicated with first cavity and second cavity, second piston end is provided with second spring, second spring is positioned at second cavity, one end in contact second piston end, the other end is stuck in outside the terminal gas port of second cavity, second cavity top has aperture, and bayonet lock is arranged in this aperture, and second cavity below has deflation hole, deflation hole is communicated with second cavity, and the deflation hole diameter is less than gas port.

Described bayonet lock comprises fixture block and little spring, the aperture top of described second cavity of end in contact top on the little spring, and the little spring lower end contacts with fixture block; There is projection at two ends, the left and right sides, fixture block top, and the oral area of the aperture of second cavity top is to inner process, and the projection of microstome can be blocked projection when fixture block moved downward.

The aperture of described deflation hole is 1/2nd of described gas port aperture.

Described first piston end is set with the buttress shaft plug, and first spring housing is outside the buttress shaft plug, and buttress shaft plug rear end is stretched in the gas port, and first spring and buttress shaft plug all are positioned at first cavity.

The utility model principle of work is: under the normal operating condition, the roller orbiting of truck is during to the press strip place, contract in the effect gradually of first piston pressurized bar, air in first cavity enters deflation hole by gas port, and is concordant with the lower railway face until press strip, and truck continues operation.

Under the faulty condition, truck is out of control in descending process, formation is along the free-falling body of track, and speed is aggravated, and is instantaneous along press strip extruding first piston, because speed is fast, air in first cavity has little time to discharge by deflation hole, instantaneous expansion, and gas is washed second piston open along gas port, second piston is ejecting the location by bayonet lock behind the bayonet lock position, and truck just is parked in second position of piston.

If the reciprocal range ability of truck is longer, can consider that segmentation installs some stopper devices additional, improve conservative factor.

The utlity model has following beneficial effect: the utility model be used to prevent the truck stopper that falls out of control can actv. prevention truck is out of control falls, reduce the generation of safety misadventure, and without any need for control circuit, simple in structure, easy to use.

Description of drawings

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is used to prevent the truck stopper structural representation that falls out of control for the utility model;

Fig. 2 is the utility model bayonet lock structural representation;

Fig. 3 is used to prevent the truck stopper fundamental diagram that falls out of control for the utility model;

Fig. 4 is the utility model press strip scheme of installation;

Among the figure: 1 seat, 2 press strips, 3 first pistons, 31 piston rings, 4 buttress shaft plugs, 5 first springs, 6 gas ports, 7 second pistons, 71 piston rings, 8 bayonet locks, 81 little springs, 82 fixture blocks, 9 second springs, 10 deflation holes, 11 first cavitys, 12 second cavitys, 13 apertures, 15 tracks, 16, roller.

The specific embodiment

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4.A kind ofly be used to prevent the truck stopper that falls out of control, comprise seat 1, press strip 2, first piston 3, second piston 7, bayonet lock 8, first spring 5 and second spring 9, oblong seat 1 is arranged on original truck track 15, press strip 2 is arranged on seat 1 surface towards track one side (as Fig. 4), press strip 2 is stuck in the groove that seat 1 surface has, heave at press strip 2 middle parts, first piston 3 heads withstand on the rear that press strip 2 is heaved the place, first piston 3 rear portions are stuck in first cavity 11 that seat 1 middle part has by piston ring 31, first cavity, 11 gas ports 6 terminal and that seat 1 inside has communicate, first piston 3 ends are provided with first spring 5, these spring 5 one end in contact first 3 plugs alive are terminal, and the other end is stuck in outside first cavity, the 11 terminal gas ports;

Second piston 7 is arranged in second cavity 12 that seat 1 has by piston ring 71, second piston, 7 sectional areas are less than first piston 3 sectional areas, second cavity 12 is positioned at the below of press strip 2, gas port 6 is communicated with first cavity 11 and second cavity 12, second piston, 7 ends are provided with second spring 9, second spring 9 is positioned at second cavity 12, one end in contact second piston 7 ends, the other end is stuck in outside second cavity, the 12 terminal gas ports 6, second cavity, 12 tops have aperture 13, and bayonet lock 8 is arranged in this aperture 13, and second cavity, 12 belows have deflation hole 10, deflation hole 10 is communicated with second cavity 12, and the deflation hole diameter is less than gas port.

As Fig. 2, described bayonet lock 8 comprises fixture block 82 and little spring 81, aperture 13 tops of described second cavity of end in contact 12 tops on the little spring 81, and little spring 81 lower ends contact with fixture block 82; There is projection at two ends, the left and right sides, fixture block 82 top, and the oral area of the aperture 13 of second cavity, 12 tops is to inner process, and the projection of 13 mouthfuls of apertures can be blocked projection when fixture block 82 moved downward.

The aperture of described deflation hole 10 is 1/2nd of described gas port 6 apertures.

Described first piston 3 ends are set with buttress shaft plug 4, the first springs 5 and are enclosed within outside the buttress shaft plug 4, and buttress shaft plug 4 rear ends are stretched in the gas port 6, and first spring 5 and buttress shaft plug 4 all are positioned at first cavity 11.

When the utility model uses under normal operating condition, the roller 16 of truck is along track 15 operations, during to press strip 2 places, first piston 3 is subjected to contract in press strip 2 effects gradually, air in first cavity 11 slowly enters deflation hole 10 by gas port 6, press strip 2 flattens gradually, and roller 16 rolls across press strip gradually, and truck continues operation.

Nonserviceable down as Fig. 3, truck is out of control in descending process, formation is along the free-falling body of track, and speed is aggravated, and truck roller 16 is instantaneous along press strip 2 extruding first pistons 3, because speed is fast, air in first cavity 11 have little time to discharge by deflation hole 10, and a large amount of air pour second cavity 12 along 6 moments of gas port, wash second piston 7 open, second piston 7 is ejecting the location by bayonet lock behind bayonet lock 8 positions 8, and truck just is parked in the position of second piston 7.

The utility model can also be used for the truck track of banking motion except on the truck track that is applied in perpendicular movement, the utility model can actv. prevention truck is out of control falls, reduce the generation of safety misadventure, and it is, simple in structure, easy to use without any need for control circuit.

Claims

1, a kind ofly be used to prevent the truck stopper that falls out of control, it is characterized in that, comprise seat, press strip, first piston, second piston, bayonet lock, first spring and second spring, the oblong seat is arranged on the truck track, press strip is arranged on the seat surface towards track one side, heave at the press strip middle part, the first piston head withstands on the rear that press strip is heaved the place, the first piston rear portion is stuck in first cavity that has in the middle part of the seat by piston ring, first cavity gas port terminal and that seat inside has communicates, the first piston end is provided with first spring, and this spring one end in contact first piston end, the other end are stuck in outside the terminal gas port of first cavity;

2, as claimed in claim 1ly be used to prevent the truck stopper that falls out of control, it is characterized in that described bayonet lock comprises fixture block and little spring, the aperture top of described second cavity of end in contact top on the little spring, the little spring lower end contacts with fixture block; There is projection at two ends, the left and right sides, fixture block top, and the oral area of the aperture of second cavity top is to inner process, and the projection of microstome can be blocked projection when fixture block moved downward.

3, as claimed in claim 1 or 2ly be used to prevent the truck stopper that falls out of control, it is characterized in that the aperture of described deflation hole is 1/2nd of described gas port aperture.

4, as claimed in claim 1 or 2ly be used to prevent the truck stopper that falls out of control, it is characterized in that described first piston end is set with the buttress shaft plug, first spring housing is outside the buttress shaft plug, buttress shaft plug rear end is stretched in the gas port, and first spring and buttress shaft plug all are positioned at first cavity.