CN2255971Y

CN2255971Y - Automatic speed limiting and falling down preventer

Info

Publication number: CN2255971Y
Application number: CN 95241037
Authority: CN
Inventors: 陈道升
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-12-12
Filing date: 1995-12-12
Publication date: 1997-06-11
Anticipated expiration: 2005-12-12

Abstract

The utility model relates to a full automatic speed limit and drop prevention device, which can be used for various vertical shafts for preventing cages from dropping. The full automatic speed limit and drop prevention device belongs to the technical field of vertical shaft safety equipment. The utility model is composed of a start-up part, a connecting rod brake part, a self-locking part, a speed limit part, a buffering part, a recoil rope, etc., wherein the start-up part is provided with a spring, a support rod and a lifting rod; the brake part is provided with a brake iron block, a primary connecting rod and an auxiliary connecting rod; the self-locking part is provided with a support rod, a spring and a banking screw; the speed limit part is provided with a pulley, an eccentric wheel, a support rod and a support frame; the buffering part is provided with an oil cylinder. The utility model has the advantages of multifunction, flexible action and large safety coefficient, and always has a mechanism which can play the role of drop prevention in any situation.

Description

Full automaticity speed limit falling protector

A kind of full automaticity speed limit falling protector is applicable to that various vertical prevent that cage from falling, and belong to the vertical security appliance field.

At present, domestic used falling protector, mostly form by catching device, energy disperser etc., other forms of falling protector is also arranged, a kind of falling protector is arranged especially, fine (the ZL90211600.2 of its anti-fall performance, the applying date is on February 12nd, 90) this kind falling protector is made up of actuating section, running part, brake portion, actuating section is made up of cross bar type four eyed connecting strap and spring strut, the both wings of four eyed connecting strap have chute, the bottom is connected with spring, and the elastic force of the spring in the spring strut is enough to make the piece of stopping of brake portion to start, and checks brake wire.Running part is made up of also major and minor drive link and a wing of four eyed connecting strap joins, pivot pin connects major and minor drive link, in the junction plus-minus screw is arranged, make main gear bar tilting downwards in the auxiliary driving bar, brake portion is made up of transmission hook and connecting rod, the anti-skidding iron block of stopping, the main gear bar joins by plus-minus screw and transmission hook, and the transmission hook hooks the iron of stopping that slides, and the iron of stopping of sliding encases check band.

The deficiencies in the prior art part is: though can catch the tenesmus cage effectively, and simple in structure, be easy to make, but its function is still incomplete, when catching the cage emergency brake that descends rapidly, cage may rebound to go up and jump, and the iron block of stopping produces the phenomenon that declutches at the weightless in a flash of bounce-back, thus the brake non insurance of falling protector.

The purpose of this utility model is: propose a kind of full automaticity speed limit falling protector, increased self-locking mechanism, speed limiting mechanism and speed limit parts such as buffering part and return rope, thereby solved prior art brake non insurance, the defective of jumping is gone up in the cage bounce-back during sudden stop.

The utility model increases self-locking mechanism, speed limiting mechanism and buffering part and return rope etc. and forms full automaticity speed limit falling protector on the basis of original technology.Its actuating section is made up of spring strut, spring, pole, shadoof at the cage top.Connecting rod brake part is made up of the iron block of stopping, major and minor connecting rod, be positioned at the top of falling protector, the iron block of stopping divides the left and right iron block of stopping, and check band is embraced, and major and minor connecting rod one end is connected on the base plate with bearing pin, the other end joins with the iron block of stopping, one intermediate rod is arranged at connecting rod brake part bottom, and an end of intermediate rod links to each other with shadoof, and the other end is connected on the slideway with bearing pin, there is little pole inboard on the intermediate rod, and little pole heads on the right side iron block of stopping up and moves when shadoof pull-up intermediate rod.Under the effect of major and minor connecting rod, the iron block of stopping tightly embraces check band.Form by spring, pole, stop screw from latching segment, when the cage sudden stop, move on the falling protector base plate,, withstand the iron block of stopping, hold check band tightly from latching segment generation effect.Speed limit partly is made up of pulley, eccentric wheel, clamping plate, spring bracket, pole.When the cage excessive velocities, the rotation of pulley does not catch up with the speed that cage descends, pulley is under the effect of friction force, have on the part of small distance and move, pulley and eccentric wheel are clamped check band at this moment, and when tentatively limiting the cage descending speed, stent open is moved simultaneously, pole heads on the right side iron block of stopping and checks check band, and cage descends and stops.Buffer portion is a hydraulic cylinder.Hydraulic actuating cylinder one end is fixed on the base plate, and the other end is fixed on the crossbeam, and the crossbeam two ends are fixed on the both sides slideway of falling protector.During brake, move on the relative position of base plate, and crossbeam is motionless, base plate hauls oil cylinder and rises, and this moment, the oil cylinder draining produced a power that makes cage descend and cushion, and reached the purpose of sudden stop buffering.The return rope is to turn back along the pulley of falling protector slideway, base plate lower end and the pulley on the crossbeam from the cage top to be connected rope on the base plate, this rope has two spacing wire clips at place, cage top, its distance is the distance that base plate can rise when brake, because the return rope hauls base plate in the base plate bottom, the distance that base plate rises when disconnected rope brake have only two wire clips between length, avoid the device on base plate and top to collide, the bad various parts of shake.Falling protector side by side except fault, starts winch after work, carry on the cage, and the iron block place of stopping loosens, brake part, from latching segment, speed limit part homing, and cage is free lifting again.

Of the present utility model being characterised in that: by actuating section, brake part, form from latching segment, buffer portion, speed limit part, return rope.The spring strut of actuating section has tension spring at the cage top in the spring strut, spring perch and coulisse welding.One end and the coulisse of pole join, and the other end and shadoof join, and the lower end of shadoof links to each other with the intermediate rod that bearing pin is connected on the slideway with an end.Left and right two of the connecting rod brake part iron block of stopping encases check band, and an end of three main connecting rods and an auxiliary connecting rod is connected on the base plate with bearing pin respectively, and the other end is connected on the iron block of stopping with bearing pin.Three main connecting rods be arranged as triangle, auxiliary connecting rod links to each other with left brake shoes.From the middle part of latching segment at falling protector, be a pole from latching segment, the one end has spring to haul, and the other end is propped with the right side iron block of stopping and is touched mutually, on the other slideway of support a stop screw is arranged.The pulley and the eccentric wheel of speed limit part are clipped respectively by clamping plate, and check band passes between pulley and eccentric wheel, and a little gap is arranged.The clamping plate upper right side has a pole carrying, and pole and the right side iron block of stopping touches mutually, and bottom righthand side has stent support, and the support lower end is connected on the base plate with bearing pin, and there have spring to haul simultaneously to be spacing, guarantees that pulley contacts with check band.Buffer portion and return rope are in the bottom of falling protector.Buffer portion is an oil cylinder, and its upper end joins with base plate, and lower end and crossbeam join, and crossbeam is fixed on the slideway.The hoisting rope at return rope and cage top joins, along the sidewall of falling protector, and the traction box of the base plate that behind the pulley of base plate lower end and the pulley on the crossbeam, turns back.The upper and lower of falling protector has the cage shoe rope race respectively, and check band therefrom passes.

Fig. 1 is the use location figure of the utility model on cage.

Fig. 2 is the utility model structural representation.

Below in conjunction with embodiment the utility model further is illustrated.The actuating section of falling protector is positioned at the top of cage 1, and it is made up of spring strut 2, spring 3, pole 4, shadoof 5.Spring is contained in the spring strut, and spring housing is on spring perch 6, and hoisting rope 7 is connected with spring perch.One end of lifting arm links to each other with an end of pole 4, and the other end is connected with intermediate rod 8 one ends, and the other end of intermediate rod 8 is connected on the slideway with bearing pin.There is little pole the intermediate rod inboard, and little pole heads on the iron block of stopping up and to move when shadoof pull-up intermediate rod, promotes to stop iron block work.Connecting rod brake part is made up of 11,12,13, one auxiliary connecting rods of 9,10 and three main connecting rods of iron block 14 of stopping.Stop iron block with check band 15 obvolvents, chute is arranged on the auxiliary connecting rod, in order to adjust the two iron block relative positions of stopping, when guaranteeing brake, the iron block of stopping is that face contacts with check band.During normal operation, two stop has certain interval between iron block and the check band, and cage is able to free lifting, when carrying on the intermediate rod 8, heads on the right brake shoes and moves, and under the effect of four connecting rods, firmly clamps check band, and cage stops to descend, and reaches anti-fall purpose.The relative position of three main connecting rods is leg-of-mutton, and to determine a face, auxiliary connecting rod is then assisted and adjusted the iron block of stopping and use.Forming by spring 16 and pole 17, stop screw 18 of this falling protector from latching segment.Pole 17 usefulness bearing pins are connected on the base plate 19 as fulcrum, and the below is held with spring 16, and stop screw is on slideway.When not working, pole 17 and the right side iron block of stopping touches mutually, when the cage sudden stop, move on the falling protector base plate, the limited screw that comes off, pole is under the effect of spring tension, promote the right side and stop and move on the iron block, make the iron block of stopping hold check band tightly, play anti-fall automatically, follow the tracks of braking action.The speed limit part is made up of the pulley 21, eccentric wheel 22, support 23, the spring 24 that are contained in the chuck 20.Chuck is being carried by pole 25, supporting with support 23, the lower end of support 23 is connected on the base plate with bearing pin, check band passes between pulley 21 and eccentric wheel 22, and under the pulling of spring 24, pulley 21 and check band 15 contact, when cage when normal speed descends, pulley 21 is along with check band rotates, and when cage speed strengthened, the speed that pulley 21 rotates did not catch up with, produce " not " strength, under the effect of friction force, move and run-off the straight on the part of chuck generation small distance, the gap disappears between pulley and the eccentric wheel, and check band is bitten, force cage speed to lower, reach tentatively and underspeed, meanwhile support is under the drive of the power of moving on the chuck small distance, open, and on move, head on the iron block of stopping that pole 25 is touched mutually and check check band, force the cage of hypervelocity to stop.When the pole 25 of carrying chuck is not worked and the right side iron block of stopping contacts.Pulley 21 and eccentric wheel 22 play the auxiliary brake effect when clamping check band, touching stops plays the main brake effect when iron block is embraced check band.Falling protector has the brake effect of three road brake functions of connecting rod brake, self-locking brake, speed limit, and cage safety is guaranteed.Buffer portion and return rope 28 are positioned at the bottom of falling protector, buffer portion is an oil cylinder 26, and the upper end of oil cylinder is connected on the base plate, and the lower end is connected on the crossbeam 27, during the hypervelocity brake, base plate moves on the position, and crossbeam is fixed on the slideway, so it is motionless, base plate spurs oil cylinder like this, the oil cylinder draining, thus the power that a buffering cage descends produced, reach the purpose of sudden stop buffering.Two cage

shoe rope slings

31,32 are arranged respectively at the top of falling protector, bottom, to guarantee the upright position of check band in each parts of falling protector.The return rope of falling protector is connected with the hoisting rope at cage top, and turning back through the pulley 29 of base plate lower end, pulley 30 on the crossbeam 27 along the slideway of falling protector is connected with traction box on the base plate.The return rope has two

spacing wire clips

33,34 at place, cage top, and bump against when control falling protector base plate rises and upper edge, causes the damage of parts in addition on the base plate.When having an accident, falling protector work, behind the trouble-shooting, hoisting rope is being carried cage, and after the iron block place of stopping did not have the effect of gravity, the iron block of stopping had loosened, and brake part, from latching segment, speed limit part sets back automatically, makes cage free lifting again.

The utility model is compared with existing technology, have brake, self-locking, speed limit, The functions such as buffering can guarantee that cage stops safely, the catching device worker when breaking down As the time be active in one's movements, safety coefficient is big.

Claims

1, a kind of full automaticity speed limit falling protector, brake partly, form by actuating section, connecting rod from latching segment, speed limit part, buffer portion, return rope, it is characterized in that: the spring strut of actuating section is positioned at the cage top, spring is arranged in the spring strut, spring perch is connected with coulisse, one end and the coulisse of pole join, and the other end and shadoof join, and the intermediate rod that a shadoof lower end and an end are connected on the slideway joins; The iron block of stopping of connecting rod brake part encases check band, and an end and the base plate of major and minor connecting rod join, and an end joins with the iron block of stopping; At the falling protector middle part, its pole one end contacts with the iron block of stopping from latching segment, and the other end has spring to haul, and on the slideway on pole next door stop screw is arranged; The pulley and the eccentric wheel of speed limit part are fixed with clamping plate, and check band passes from two-wheeled, and pulley contacts with check band, and the clamping plate top joins with pole, and pole contacts with the iron block of stopping, and the below is connected with support, and support one end is fixed on the base plate with bearing pin; And there is spring to haul; Buffer portion is an oil cylinder, and the upper end is connected with base plate, and the lower end is connected with crossbeam, and the crossbeam two ends are connected with slideway; The return rope is connected with hoisting rope at the cage top, and two spacing wire clips are arranged, and turning back through base plate top sheave and crossbeam top sheave along the slideway of falling protector is connected with traction box on the base plate; The upper and lower of falling protector has the cage shoe rope race respectively.

2, full automaticity speed limit falling protector according to claim 1 is characterized in that: said connecting rod brake part, the layout of its three main connecting rods is triangles.

3, full automaticity speed limit falling protector according to claim 1 is characterized in that: said connecting rod brake part has chute on its auxiliary connecting rod.

4, full automaticity speed limit falling protector according to claim 1, it is characterized in that: the spring of actuating section is a tension spring.