CN2813554Y

CN2813554Y - Automatic controlling hydraulic speed-limiting antifalling locking device for hanging cage

Info

Publication number: CN2813554Y
Application number: CN 200520051363
Authority: CN
Inventors: 唐锡庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-13
Filing date: 2005-07-13
Publication date: 2006-09-06
Anticipated expiration: 2015-07-13

Abstract

The utility model relates to a construction machine which is mainly used for the lifters for construction to prevent a suspension cage from falling off. The utility model can also be used as a safe device of the suspension cage of a lift, a cable way, a vertical well of a mine and an inclined well of a mine. An anti-falling steel cable with high intensity is arranged at each of the both sides of the suspension cage, the upper end of the steel cable is fixed on a transverse beam of the top of a tower, and the lower end is fixed on a base. A tightness regulating device is arranged on the steel cable, two pairs of hydraulic pressure safety tongs are hung at both sides of the suspension cage, and the steel cable passes through the center of the hydraulic pressure safety tongs. A track rope is used for fixing one end of a hydraulic cylinder, and the other end of the hydraulic cylinder is fixed on the suspension cage. A self-control hydraulic pressure speed limiting device of a centrifugal block type and an electromagnetic control device of a self-locking wedge are arranged on the suspension cage. The utility model can limit speed because of the accidental overspeed of the suspension cage, can make the suspension cage brake on the two anti-falling steel cables with high intensity because of the accidental break of the track rope, and can immediately lock as soon as the power is cut off during work to ensure the personal safety.

Description

Cage automatic control hydraulic pressure speed limit fall arrest latching device

Technical field

The utility model relates to a kind of vehicle for construction, is mainly used on the elevator of building operation and prevents that cage from falling, and the cage safety device that also can be used as elevator, cableway, mine vertical shaft, inclined shaft uses.

Background technology

Existing building hoist adopts the taper voussoir to brake on guide rail more, or with being hung on the web member, cause guide rail, web member distortion easily, influence body of the tower whole service life and safety performance, and only brake cage on one side, impact when big, produce very big additional bending moment for whole body of the tower, body of the tower and cage resistance to overturning make a big impact, and serious causes bulk deformation big, cause complete machine not use.The patent No. that the applicant declares is that 02277037.2 speed limit automatic control hydraulic efficiency gear that is called " towing machine " just exists the problems referred to above.

The utility model content

The technical matters that the utility model need solve is: be subjected to the problem of the stability of tower crane body difference that force unbalance causes because of one side brake at elevator craning cage, and a kind of safe and reliable cage safety device is provided.

The technical scheme that the utility model adopted: in the cage both sides an anti-fall steel rope of high strength is installed, the upper end of this steel rope is fixed on the cat head crossbeam, and the lower end is fixed on the base; Be equipped with on the steel rope and tighten device; Two hydraulic safe pincers hang on the cage both sides, and steel rope passes through from hydraulic safe pincers center; One end of ropeway carrying-rope immobile liquid cylinder pressure, the other end of hydraulic actuating cylinder is fixed on the cage; Weight type automatic control hydraulic pressure speed-limit device and self-locking voussoir electromagnetic control apparatus also are installed on cage.

The beneficial effects of the utility model: the utility model of above structure can realize that cage is because of accident hypervelocity speed limit, because of fractureing, the ropeway carrying-rope accident brakes cage on two anti-fall steel ropes of high strength, outage can be locked at once during work, to guarantee personal safety.

Description of drawings

Fig. 1 is application example figure of the present utility model;

Fig. 2 is a fundamental diagram of the present utility model;

Fig. 3 is hydraulic cylinder structure figure of the present utility model;

Fig. 4 is the constructional drawing of the utility model hydraulic safe pincers;

Fig. 5 is the utility model locking wedge block mechanism structure figure;

Fig. 6 is centrifugal automatic control hydraulic pressure of a utility model speed-limit device constructional drawing;

Fig. 7 is the A-A cutaway view of Fig. 6;

Fig. 8 is the utility model cage speed limit, flat bed, anti-fall structure principle chart.

The figure number explanation:

1, cage 2, automatic control hydraulic pressure speed-limit device

3, ropeway carrying-rope 4, anti-fall steel rope

5, hydraulic safe pincers 6, hydraulic actuating cylinder

7, steel rope tightens device 8, pulley

9, crossbeam 10, voussoir

11, body of the tower guide rail 12, hydraulic reservoir

13, hydraulic actuating cylinder cylinder bottom 14, hydraulic oil fuel feed hole

15, piston in hydraulic cylinder 16, pull back spring

17, screw mandrel 18, bearing pin

19, taper voussoir cover 20, taper voussoir

21, pull back spring 22, cylinder body

23, piston 24, fuel feed hole

25, track adjusting wheel 26, rubber slipper

27, back taper parallels 28, Hydraulic Pump

29, friction wheel 30, transmission shaft

31, friction wheel sliding mats 32, driving pulley

33, centrifugal belt pulley 34, pull bar

35, travel switch 36, belt

37, fixed seating 38, spring

39, hydraulic valve 40, centrifugal

41, hydraulic valve stem 42, compression spring

43, hydraulic valve fuel feed hole 44, taper valve opening

45, chute 46, valve opening

47, connecting rod 48, electromagnet

49, manual steel rope 50, pull back spring

51, permanent seat

The specific embodiment

Referring to Fig. 1: anti-fall steel rope 4 one ends of high strength are fixed on the base, the other end penetrates hydraulic safe pincers 5 on the cage 1, by crossbeam 9

top sheaves

8,4 penetrate on the cage 1 another hydraulic safe pincers 5 toward drop-down will the rope again, the back is crossed body of the tower pulley 8 and is returned to restrict and 4 penetrate that hydraulic safe clamps 5 on another cage 1, up draws in crossbeam 9, it is drop-down to cross pulley 8 backs, to restrict 4 penetrate another hydraulic safe of cage pincers 5 after, will restrict again and 4 be fixed in steel rope and tighten on the device 7, steel rope is tightened.To cross on the crossbeam steel rope 4 then fixes with crossbeam 9 contact positions.An end of ropeway carrying-rope 3 immobile liquid cylinder pressures 6, the other end of hydraulic actuating cylinder 6 is fixed on the cage 1 again.Weight type automatic control hydraulic pressure speed-limit device 2 is installed on the cage 1, the hydraulic oil pipe control circuit is connected, added hydraulic oil, debug each safety device after, but just test-run a machine.

Referring to Fig. 2: 5, hydraulic actuating cylinders of two hydraulic safe pincers 6, automatic control hydraulic pressure speed-limit device 2, hydraulic reservoir 12 are installed on respectively on the cage 1.Guide rail 11 sides are equipped with two bevelled voussoirs 10, connect hydraulic safe pincers 5, hydraulic actuating cylinder 6, automatic control hydraulic pressure speed-limit device 2, fuel tank 12 respectively with hydraulic oil pipe.

Referring to Fig. 3: hydraulic actuating cylinder 6 is by cylinder bottom 13, fuel feed hole 14, piston 15, spring 16, screw mandrel 17, and fixedly steel rope bearing pin 18 is formed.Have circular hole on cylinder bottom 13 1 ends, be used for fixing cage fashionable dress bearing pin usefulness, the other end has screw thread to be used for linking with cylinder body.When ropeway carrying-rope 3 (see figure 1)s are walked around bearing pin 18, block with the steel wire card, cylinder bottom 13 is fixed on the cage, because the effect of cage goods and deadweight, spring 16 compressions, hydraulic oil can be from fuel tank 12 oil suction (see figure 2)s, enter in the hydraulic actuating cylinder 6 by oilhole 14, when ropeway carrying-rope fractures because of accident, return pushes away piston for 15 times because spring compresses in advance, hydraulic oil is extruded from oilhole 14, and enter in the aforesaid hydraulic safe pincers 5 by hydraulic oil pipe, make 5 work of hydraulic safe pincers, thereby block anti-fall steel rope 4 on Fig. 1, cage is hung on the anti-fall steel rope 4 firmly by two hydraulic safe pincers.

Referring to Fig. 4: hydraulic safe pincers 5 are by taper voussoir cover 19, two taper voussoirs 20, pull back spring 21, pass the anti-fall steel rope 4 at center, cylinder body 22, piston 23, fuel feed hole 24 is formed, when cage 1 damages because of towing machine brake failure coupler, steel rope fractures, and free fall when hypervelocity, have hydraulic oil and enter piston 23 cavity of resorptions from fuel feed hole 24, hydraulic oil promotes piston 23 and rises, compression spring 21 promotes taper voussoir 20 simultaneously, because of pushing away on the taper voussoir 20, two voussoirs are owing to anti-fall steel rope 4 is clamped in displacement, the taper voussoir cover 19 dead voussoirs 20 that paste, so two voussoirs can firmly be clamped anti-fall steel rope 4 and press from both sides tight more more, thereby realize the tenesmus of braking cage, to reach safety requirements.

Referring to Fig. 5: locking taper cotter mechanism is installed on the cage 1, is made up of back taper parallels 27, track adjusting wheel 25, rubber slipper 26, voussoir 10, body of the tower guide rail 11.Cage 1 moves to desired location when stopping, and locking connecting rod 47 can will push away (see figure 8) on the voussoir 10 by automatic or manuals, pins guide rail 11, and when playing the cage unloading, the quiescence braking is lived cage on body of the tower guide rail 11.

Referring to Fig. 6 and Fig. 7: cage automatic control hydraulic pressure speed-limit device 2 is made up of Hydraulic Pump 28, friction wheel 29, transmission shaft 30, friction wheel cliding seat 31, driving pulley 32, centrifugal belt pulley 33, pull bar 34, travel switch 35, belt 36, fixed seating 37, spring 38, hydraulic valve 39.Integral installation is tightened bolt behind the fixed seating and is made spring 38 compression on cage 1, promotes friction wheel cliding seat 31, makes friction wheel 29 press body of the tower guide rail 11.

Cage 1 in normal operation, friction wheel 29 rotates in the speed limit scope, centrifugal 40 certain position in apocarpy belt wheel guide groove, pull bar 34 is held hydraulic valve stems 41, compression spring 42, the tensile force of spring makes belt 36 produce certain predetermincd tension.The normal transmission of belt this moment, the Hydraulic Pump fuel feed hole is connected fuel tank 12 (see figure 2)s with oil pipe, and oil outlet is connected hydraulic valve fuel feed hole 43.Hydraulic valve stem 41, compression spring 42, centrifugal belt pulley 33 are in state of equilibrium, and Hydraulic Pump 28 is just changeing institute's pump hydraulic oil and getting back to fuel tank 12 by fuel feed hole 43 on the hydraulic valve 39 to spool, oil outlet 44.Reversely during counter-rotating get back to fuel tank 12 from Hydraulic Pump 28 fuel feed holes.Hydraulic oil realizes not having the circulation of pressure.When cage because of ropeway carrying-rope fractures, towing machine brake failure, coupler damage, cage 1 freely falls when exceeding the speed limit to certain speed, outwards throw away because of belt pulley hypervelocity for centrifugal 40, belt 36 is by centrifugal 40 swelling, belt pulley 33 is just whole to the close displacement of driving pulley 32 directions in chute 45, drives pull bar 34, valve rod 41 simultaneously, when compression spring 42 is moved to certain position because of valve rod 41, shutoff valve inner conical valve opening 44 is opened other end valve opening 46 in the valve.Hydraulic oil can only enter spool from hydraulic valve fuel feed hole 43 and enter fuel feed hole 24 Fig. 4 from valve opening 46 through oil pipe, and hydraulic safe pincers 5 are equally worked as previously mentioned, and cage is braked on anti-fall steel rope.Pull bar displacement simultaneously also promotes travel switch 35 tripping magnets 48 and towing machine control circuit, and towing machine is shut down.Voussoir 10 upward movements locking body of the tower guide rail 11.

Referring to Fig. 8: with hydraulic safe pincers 5, automatic control hydraulic pressure speed-limit device 2, voussoir 10, connecting rod 47, electromagnet 48, manually steel rope 49, pull back spring 50, permanent seat 51 all are installed on the cage 1, again cage is assemblied on the body of the tower guide rail 11, then with two hydraulic safe pincers 5 of anti-fall steel wire penetrating, to realize speed limit, anti-fall, the locking function of cage.

When the cage proper motion, electromagnet 48 energising or the steel ropes 49 of manually leaving behind are inhaled lower link 47, pull back spring 50 compressions, and voussoir 10 is to bottom offset getaway 11, cage up-and-down movement freedom.When towing machine is shut down, electromagnet 48 dead electricity, pull back spring 50 returns, connecting rod do not become horizontality downwards, thus the bevelled voussoir 10 of jack-up is close to guide rail 11, makes on the cage static brake body of the tower guide rail 11.Cage can not glide, and the effect of gravity can make bevelled voussoir lock tighter and tighter.Malfunctioning as electromagnet, then can make voussoir break away from body of the tower guide rail 11 by the safety door gangbar manual steel rope 49 of leaving behind, cage can the easy on and off motion.

The utility model utilizes the frictional force drives Hydraulic Pump of friction wheel, and with hydraulic actuating cylinder spring return, makes hydraulic oil produce hydrostatic drive.By centrifugal belt pulley because of velocity variations, thereby the direction of modulated pressure valve hydraulic oil, and the hydraulic safe pincers are worked simultaneously, when meeting accident tenesmus, brake on high resilience can the anti-fall steel rope of buffer action to realize cage, it is stressed that cage is in the three force balance symmetry, so cage can be braked in the motion way safely, reliably.Body of the tower guide rail, web member there is not impact effect.Because of towing machine control circuit and locking electromagnet, hydraulic pressure automatic control travel switch link, during unexpected the generation, also cut off control path simultaneously again.

Latching device adopts the big elastomeric material of friction coefficient, and the body of the tower guide rail is not had wearing and tearing, and is to brake simultaneously when shutting down, and is safe and reliable, realizes auto lock.

Claims

1, a kind of cage automatic control hydraulic pressure speed limit fall arrest latching device is characterized in that in the cage both sides an anti-fall steel rope of high strength being installed, and the upper end of this steel rope is fixed on the cat head crossbeam, and the lower end is fixed on the base; Be equipped with on the steel rope and tighten device; Two hydraulic safe pincers hang on the cage both sides, and steel rope passes through from hydraulic safe pincers center; One end of ropeway carrying-rope immobile liquid cylinder pressure, the other end of hydraulic actuating cylinder is fixed on the cage; Weight type automatic control hydraulic pressure speed-limit device and self-locking voussoir electromagnetic control apparatus also are installed on cage.