CN2424185Y - Creeping hydraulic hoisting trailer - Google Patents

Abstract

The utility model relates to a creeping hydraulic hoisting trailer, which belongs to a technical field to use self locking characteristic of a unidirectional locking mechanism to lock a steel rope and realize height hoist and long distance trail by the reciprocating creepage and the transposition progress of a hydraulic cylinder. The utility model is characterized in that the utility model is provided with the hydraulic cylinder, the extending directions of two piston rods which are axially configured are opposite, the end of the hydraulic cylinder is provided with an upper clamping claw and a low clamping claw which can all bear loads and creep to make the steel rope continuously move without intermission and vibration. The creeping hydraulic hoisting trailer stably and accurately carries out the hoist and the trail in fast speed and in safety. The utility model has good skill quality.

Description

Creeping motion type Hydraulic for lifting load draw gear

The utility model relates to a kind of creeping motion type hydraulic pressure (or pneumatic) lifting tractor equipment.Be to belong to the latching characteristics that utilizes unidirectional locking mechanism, by the reciprocal wriggling of short distance hydraulic actuating cylinder (or cylinder), transposition is gone forward one by one, and realizes the technical field of elevation lifting and long distance traction.

In the prior art, in the construction industries such as electric power, chemical industry, railway, bridge, a kind of cable type hydraulic lifting apparatus of integral device widespread use of the hundreds of tons of a large amount of single-pieces, last kiloton carries out integral hoisting.This novel device is compared with large-scale tower crane or hoist system, has that the equipment cost is low, volume is little, the gross weight of equipment amount is light, load-carrying ability is big, installations is simple and direct, occupied ground is little, lift safety, saving of work and time or the like lot of advantages.The visible patent application of its technical background data " a kind of Hydraulic for lifting load device ", application number (CN 87214795U); Utility model patent " cable type hydraulic lifting apparatus ", the patent No. (ZL952192381); Lei Tianjue edits " hydraulic engineering handbook " 1995-1998 page or leaf (China Machine Press's nineteen ninety).Its principle is exactly to utilize the unidirectional self-lock characteristic of upper and lower cutting ferrule, and the crank motion by hydraulic jack makes, and following cutting ferrule alternately pins cable wire, and step wise intermittently promotes weight, and utilizes loose card device successive to unclamp cutting ferrule when dropping of load, progressively transfers weight.

Yet this prior art still has very big defective, and mode of operation is very unreasonable.Show it is that to promote or transfer weight all be to be operated in a kind of intermittent moment state, thereby work speed slows down, lifting of short distance each time or decline all are accompanied by once and stop (being equivalent to once brake), for load, fatigue, all production harmful effects of life-span of cable wire and other suspenders.Also influence simultaneously the stable of lifted weight thing, bring many safety hazard such as vibration.Especially in the dropping of load operating mode, the short distance down maneuver all needs the lifted weight thing is promoted the △ height stroke that could descend each time, and working process is unreasonable, sees also uneconomical from energy-conservation angle.In application in practice, this technology is used for large-scale overweight equipment lifting more, need the synchronous lifting of multiple arrangement, but this device that prior art provided, because locking stroke △ is not very accurate definite value, and cable wire, the suspender factor such as unbalanced that stretches is a lot, will lifting begin and the lifting process in adjust multiple arrangement and reach " waiting neat synchronously ", highly consistent, load uniform balance is non-easy thing in fact.

The purpose of this utility model just is at above-mentioned shortcoming, improves and improves prior art, and a new technical solution is provided, reach raising speed and work efficiency, energy savings, reduce the wastage, improve the stability of lifting, accuracy, safety and the convenient purpose of using.

Advantage of the present utility model and extremely long-pending effect have been to change in the prior art the intermittently mode of operation of step wise motion of cable type Hydraulic for lifting load device.Same still two cover cable wire clamping bodies, but this two covers clamping body all has hydraulic actuating cylinder to drive respectively, is not only alternately to bear load, the work that also hockets simultaneously and promote and transfer weight, therefore remedied the intermittent time that resets and caused, made device can export continuous movement.The continuous movement of cable wire makes the lifting work process that substantial variation take place, no longer including frequent braking stops, no longer include repeatedly lifting and the slippage in the locking process, synchronous adjustment also no longer overcritical height etc. is neat, transposition reaches the even weighing apparatus of suspender tensioning etc. synchronously, and only need be as the requirement of control, regulating the speed gets final product synchronously.Can predict, device provided by the utility model, its operating characteristic, controller characteristic curve and other technical indexs contrast prior art have outstanding advantage and extremely long-pending significantly effect.

Specific embodiments of the present utility model is: a kind of creeping motion type hydraulic pressure (or pneumatic) hoisting device, mainly by hydraulic jack, cable wire, the cable wire clamping body, hydraulic pressure and control system, supporting member is formed, it is characterized in that: described hydraulic jack is disposed by two coaxial lines, the double acting hydraulic cylinder that the direction that its piston rod stretches out is opposite (or cylinder) constitutes, the end of two-piston bar is respectively arranged with the cable wire clamping body, the cable wire clamping body is by the claw of the band conical surface and the single oriented locking device that master jaw constitutes, its unidirectional locking direction of the cable wire clamping body of described two-piston boom end is identical, and be provided with pine card oil cylinder and claw clip-loosing mechanism, clip-loosing mechanism makes claw lose unidirectional locking effect when pine card oil cylinder is worked, and described dried jin top hydraulic cylinder body connects load-bearing with supporting member.

Further specify the specific embodiment and the principle of work thereof of this programme, process below in conjunction with accompanying drawing:

Fig. 1 is the utility model " structural representation of creeping motion type Hydraulic for lifting load draw gear.”

(100), (200) be respectively two arranged coaxial, middle perforation can be held cable wire and passes, piston rod stretches out the opposite hydraulic actuating cylinder of direction; (101), (201) be respectively the piston of above-mentioned two hydraulic actuating cylinders and the assembly of tubular piston bar, and (100) is divided into A1, B1 two chambers, and (200) are divided into A2, B2 two chambers.

(300), (400) be two cable wire clamping bodies, is installed on (101), (201) piston rod end respectively, its unidirectional locking direction is identical, as shown.Wherein: (301), (401) are the plate washer that resets; (302), (402) are retracing spring; (303), (403) are for carrying the pawl screw; (304), (404) are for carrying claw-plate; (305), (405) are pine card oil cylinder; (306), (406) are claw;

(307), (407) are master jaw.(500) be supporting connecting piece.(600) be cable wire.

Make device shown in Figure 1 make the opposite crank motion of phase place equidirectional, promptly A1, B2 wear topping up simultaneously, A2, B1 off-load simultaneously, and the two-piston bar stretches out to two opposite senses simultaneously; A2, B1 topping up, A1, B2 off-load, the two-piston bar is withdrawn simultaneously.This device just can carry out lifting rising work automatically, if cooperate in good time loose card motion can carry out dropping of load.The state of kinematic motion of lifted weight is the step wise motion that breakpoint (but not having intermittently) is arranged.Yet two hydraulic actuating cylinders shown in Figure 1 are separately independently, can control respectively its phase place and speed, make it to cooperate better, and cooperating in harmony reaches better state of the art.Below in conjunction with Fig. 2, Fig. 3 describes lifting rising and two kinds of operating modes of dropping of load.

For sake of convenience, stipulate hereinafter: cable wire clamping body (300) is a upper clipping claw, and it is that A1 loads the B1 off-load that upper clipping claw rises, and it is that A1 off-load B1 loads that upper clipping claw descends; Cable wire clamping body (400) is following claw, and it is that A2 loads the B2 off-load that following claw rises, and it is that A2 off-load B2 loads that following claw descends.

Fig. 2 is that device shown in Figure 1 carries out the working process scheme drawing that lifting is risen.Fig. 3 is the working process scheme drawing that device shown in Figure 1 carries out dropping of load.Get the bid out the claw of this clamping body of expression of claw sketch of figure is in chucking cable wire state; The claw that does not mark this clamping body of expression of claw sketch is in the state that nature unclamps cable wire or unclamp cable wire under the clip-loosing mechanism action.

Fig. 2 explanation:

Fig. 2-(a) is an initial condition.In fact because the working process of this device is uninterrupted on-cycle, therefore the state of arbitrary moment all can be used as initial condition.Be assumed to be in addition, following claw is all at the end position near cylinder body.Upper clipping claw rises; Following claw decline-

The upper clipping claw of Fig. 2-(b) rises its sense of motion and claw self-locking direction with the therefore interior locking cable wire of upper clipping claw rising △ distance; Following claw descends, claw unclamps naturally.Weight rise with upper clipping claw be raised-

Fig. 2-(c) claw down reaches the smallest limit position fast, and upper clipping claw still promotes weight, weight be raised the S1 height-

Fig. 2-(d) upper clipping claw continues to rise, and claw also rises after reaching the smallest limit position down, this moment, its sense of motion was identical with claw locking direction, and make its speed slightly faster than the upper clipping claw ascending velocity, therefore claw is also locked cable wire down, load is transferred to down claw gradually by upper clipping claw, through △ S apart from after by under block melon promote weight-

The upper clipping claw of Fig. 2-(e) load remove and reach the limes superiors position after beginning descend fast

Fig. 2-(f) claw down promotes weight to S1+S2, upper clipping claw drop to fast the smallest limit position-

The upper clipping claw of Fig. 2-(g) begins to rise after reaching the smallest limit position, makes its speed slightly still put forward the speed that weight rises faster than claw down, and then upper clipping claw begins to lock cable wire, through △ S distance gradually with load transfer to upper clipping claw-

Fig. 2-(h) down claw discharge and arrives the limes superiors position after begin decline, and unclamp cable wire naturally; Upper clipping claw promotes weight, is returned to the state of Fig. 2-(b).

Successively cycle event can with weight continuously, uninterrupted, do not have intermittently, steadily, friction rise to an arbitrary height position.

Fig. 3 explanation:

Fig. 3-(a) is the initial position for setting arbitrarily also.Upper clipping claw is in the state that cable wire is unclamped in the clip-loosing mechanism action down, and fast rise; Following claw locking cable wire and bear sagging of load-

Fig. 3-(b) upper clipping claw arrives the limes superiors position fast, and following claw hangs toward weight decline S1-

Fig. 3-(c) upper clipping claw begins to descend after arriving the limes superiors position, and clip-loosing mechanism resets simultaneously, makes upper clipping claw lock cable wire, its descending speed gradually a little less than following claw; Following claw decline △ S distance transfers a load onto upper clipping claw, with the clip-loosing mechanism action of claw at present make down claw unclamp cable wire-

Fig. 3-(d) upper clipping claw heavy burden thing descends; Following claw after unclamping cable wire and reaching the smallest limit position, begin fast rise-

Fig. 3-(e) upper clipping claw heavy burden thing drops to S1+S2; Following claw arrive fast the limes superiors position-

Fig. 3-(f) after claw arrives the limes superiors position down beginning slowly descend, resetting with the clip-loosing mechanism of claw at present makes down claw lock cable wire gradually; Upper clipping claw continue to descend and speed accelerate gradually to make load be transferred to down gradually claw-

The upper clipping claw of Fig. 3-(g) descends through △ S distance load transfer to claw down, unclamps cable wire simultaneously under the clip-loosing mechanism action, and begins fast rise after arriving the smallest limit position; Following claw bears sagging of load, is returned to the state of Fig. 3-(a).

Cycle event can be transferred to the optional position continuously, steadily, exactly with weight successively.

For accurately, automatically finish each action by aforementioned program, and matching coordinative, reaching higher technical index, device provided by the utility model also needs the perfect hydraulic efficiency pressure system of a cover, and control system.The configuration of accompanying drawing 4 simple exemplary system.

Fig. 4 explanation:

All same Fig. 1 of (100), (200), (305), (405) label and meaning among Fig. 4.(102) be the position transduser of hydraulic actuating cylinder (100), (202) are the position transduser of hydraulic actuating cylinder (200).(309), (409) are respectively the position transduser of pine card oil cylinder (305), (405).(308), (408) be respectively the pressure sensor that is installed on upper and lower master jaw (307), (407) (see figure 1), bear the large and small identification of pressure in order to the perception master jaw and judge the transfer case of load between upper and lower claw.(700) be auto mat.(800) be hydraulic power unit.(801), (803) equal program behavior valve island for forming by the direction control electromagnetic valve.(802) be the governor valve island of forming by the flow control electromagnetic valve.

Auto mat (700) detects the signal of above-mentioned each sensor and exports electromagnetic signal control (801), (802), (803) in good time, coordination, then can realize load " relay " transmission reposefully between upper and lower claw, make the dipping and heaving of lifted weight thing continuous, free of discontinuities, friction, obtain technical qualities preferably.

Claims (4)

1, a kind of creeping motion type Hydraulic for lifting load draw gear, mainly by hydraulic jack, cable wire, the cable wire clamping body, hydraulic pressure and control system, supporting member is formed, it is characterized in that: described hydraulic jack is disposed by two coaxial lines, its piston rod stretches out the opposite double acting hydraulic cylinder of direction and constitutes, the end of two-piston bar is respectively arranged with the cable wire clamping body, the cable wire clamping body is by the claw of the band conical surface and the single oriented locking device that master jaw constitutes, its unidirectional locking direction of the cable wire clamping body of described two-piston boom end is identical, and be provided with pine card oil cylinder and claw clip-loosing mechanism, clip-loosing mechanism makes claw lose unidirectional locking effect when pine card oil cylinder is worked, and described dried jin top hydraulic cylinder body connects load-bearing with supporting member.

2, creeping motion type Hydraulic for lifting load draw gear according to claim 1 is characterized in that: be provided with pressure sensor in order to the perception load transfer in described two cable wire clamping bodies.

3, creeping motion type Hydraulic for lifting load draw gear according to claim 1, it is characterized in that: described dried jin top two-piston bar is equipped with position transduser in order to detect the piston rod stroke.

4, creeping motion type Hydraulic for lifting load draw gear according to claim 1 is characterized in that: described Hydraulic Elements are all replaceable to be pneumatic element, thereby becomes the identical pneumatics of action principle.

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