CN2238823Y

CN2238823Y - Quick lifting jack

Info

Publication number: CN2238823Y
Application number: CN 94218458
Authority: CN
Inventors: 范朝来; 范永杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-08-18
Filing date: 1994-08-18
Publication date: 1996-10-30
Anticipated expiration: 2004-08-18
Also published as: DE69524603D1; ATE210789T1; KR100390382B1; RU2140591C1; DE69524603T2

Abstract

The utility model belongs to a conventional lifting tool, and relates to a jack with quick lifting and falling functions. The utility model is characterized in that the utility model is provided with a set of automatic synchronization open and close type half nut devices which are composed of a bearing seat, a half nut and an actuating mechanism for the automatic opening and closing of the half nut. If a locking mechanism is added, the utility model can recover the slow lifting and falling functions; if an electromotor is added, the utility model can be changed into a novel electric jack with quick lifting and falling functions. The open and close type half nut device of the utility model can be widely applied to all devices which are driven by threaded rods and also need fast movement.

Description

The rapid rising jack

The utility model belongs to a kind of lifting gear, is a kind of jack with fast lifting function, is particularly suitable for doing the vehicle-mounted maintenance instrument of car.Core " automatic folding type half-nut device " in its invention also can be used for hand bench vice, lathe gripping tongs, machine tool sliding table, scaffold for building and other with the bolt and nut kinematic pair and need cross fast on the device of idle travel except that being used for jack.

Fig. 1-I is a kind of jack structure principle schematic of changing motor tire that is commonly used at present in the vehicle maintenance and repair, by connecting rod 10.1～4, screw rod 4, the left hinge axis O of base 10.5, jacking 10.6, four band quadrant gears ₂, right hinge axis O ₁, surface bearing 10.8, safety plug 10.10, rope 10.11 and with right hinge axis O ₁Making the hinge axis nut " K " of one forms.Screw rod 4 left ends and hinge axis O ₂Be connected right-hand member threaded portion and hinge axis O ₁The nut of one " K " matches.When people's rotating screw bolt 4, the effect by nut " K " makes left and right two hinge axis O during work ₂And O ₁Between distance dwindle or increase, by the effect of connecting rod mechanism, then jacking 10.6 is just with automobile W rise or fall.Its shortcoming is because of nut " K " is the single-piece nut, can not cross idle travel fast, so inefficiency.

The utility model purpose is to overcome above-mentioned shortcoming, and a kind of jack with fast lifting function is provided.

The technical solution of the utility model is to be located at right hinge axis O among former Fig. 1-I ₁On integral nut " K " change a kind of " fast automatic synchronous box-like half-nut device F " among Fig. 1-II and Fig. 1-III into, (hereinafter to be referred as " F nut "), all the other grooves with-it is characterized by: " F nut " can be located on some hinge axis, as the right hinge axis " O among Fig. 1-II ₁" on, have screw thread to match on the outer garden of the right part of its screw rod 4, and left hinge axis O is passed in the left part termination of its screw rod 4 with corresponding half-nut in its " F nut " ₂" the driving device be connected (as handle joint, change speed gear box, motor etc.) of centre hole and input rotating torque; Its " F nut " also can be separately positioned on two hinge axis " O of jack simultaneously ₁" and " O ₂" on, shown in figure I-III, but the left and right two-part screw rod of these two " F nuts " and the corresponding screw rod that is mated 4, it is opposite that the hand of spiral of its screw thread is wanted, as be arranged on left hinge axis O ₂On " F nut " and the screw thread on screw rod 4 left parts that match be left-handed button (or dextrorotation button), then be arranged on right hinge axis O ₁On " F nut " and the screw thread on screw rod 4 right parts of corresponding cooperation must be dextrorotation button (or left-handed button), the driving device of its rotating screw bolt 4 can be located at an end of screw rod in addition." F nut " is by (1) supporting base; (2) one or more half-nuts; (3) half-nut syn open-and-close mechanism is formed.Screw thread is arranged on the screw rod, and the support holes of passing the supporting base in " F nut " matches with corresponding half-nut and automatic open-and-close mechanism thereof.The characteristics of these three component parts: (1) supporting base: which is provided with the part (as hinge axis) that is connected with application vector (as jack), the part (as support holes) that is connected with screw rod, the part that matches with half-nut, also be provided with stop gear, safety mechanism, mapping device at a slow speed soon; (2) half-nut, its quantity is one or more, which is provided with negative thread, lifting slide rail, generation that is not more than half cycle and outer peripheral face and the executive item (as cam profile, face cam pilot pin) that transmits lifting power, also be provided with the member (as hinge axis, supporting locating surface) that is connected and cooperates with practical carrier sometimes on the half-nut; (3) " half-nut syn open-and-close mechanism " has: syn overload clutch mechanism, " relatively folding actuating unit " of the relative folding of screw rod half-nut comprises that flexibility closes the folding actuating unit of tooth rigidity self-locking type (following all the system abbreviates " folding actuating unit " as), half-nut closes the self-locking mechanism behind the tooth and the stop gear of folding stroke, after hoisting, jack prevents the meet accident safety mechanism of abruption of half-nut, when being descended, jack can have the fast of function at a slow speed, " selector gear " at a slow speed.

The invention has the advantages that because of having adopted " F nut ", make jack have the function of crossing idle travel fast, improved work efficiency, impact bigger when particularly hurtling down, just in time the car design has the antidetonation system of perfect spring and tire, and these potentiality are fully used.In addition, if install electrical motor, after automobile W jacking, during the whereabouts, as long as the firm counter-rotating of electrical motor, but steam power at once by gravity fall immediately, so can also save electric power during the whereabouts.

Description of drawings

Fig. 1-I is for using the right hinge axis O of prior art ₁Aufbauprinciple scheme drawing for the jack of integral nut " K ".

Fig. 1-II is for adopting a kind of " power type have soon, the jack of elevating function " at a slow speed behind " F nut " of the present invention and the motor reducing transmission device.

Fig. 1-III is at left and right hinge axis O ₁And O ₂On all be provided with the jack scheme drawing of " F nut " respectively.

Fig. 2-I is " folding actuating unit " embodiment front view for inner arc formula cam pair and metal plate spring.Among the figure, screw rod 4 is " M " to commentaries on classics, and inside and outside tooth is in engagement.

Fig. 2-II be among Fig. 2-I the A-A cutaway view (one of) expression screw rod 4 makes " M " to rotation, the negative thread of two half-nuts working condition chart that just is being meshed with screw flight.

Fig. 2-II is the A-A cutaway view (two) among Fig. 2-I, and expression screw rod 4 is made " N " backward rotation, the working condition chart that internal and external screw thread separates.

Fig. 3-I is the block diagram of the supporting base 1A among Fig. 2-I.

Fig. 3-II is the block diagram of upper and lower two half-

nut

2A, 2A ' among Fig. 2-I.

Fig. 3-III is the block diagram of the lifting 3A among Fig. 2-I.

Fig. 3-III is the block diagram of the tension metal plate spring 14 among Fig. 2-I.

Fig. 4-I is the embodiment front view of inner arc cam and edge type strainer groove for " folding actuating unit ".Screw rod 4 is " M " and turns among the figure, and internal and external screw thread is just locating to mesh operating mode.

Fig. 4-II be among Fig. 4-I G-G to cutaway view (one of), screw rod 4 is made " M " to rotation, internal and external threads place engagement operating mode.

Fig. 4-III be G-G among Fig. 4-I to cutaway view (two), screw rod is done " N " counter-rotating, internal and external screw thread is in the separation operating mode.

Fig. 4-III is the upper and lower half-nut 2B among Fig. 4-I, the block diagram of 2B '.

Fig. 5-I is the embodiment front view that waist shape edge type strainer groove is set on half-nut for " folding actuating unit ", and screw rod 4 is made " M " to rotation among the figure, and internal and external screw thread is in the engagement working condition chart.

Fig. 5-II be Fig. 5-I F-F to section-drawing (one of), internal and external threads is in engagement among the figure.

Fig. 5-III be the F-F of Fig. 5-I to section-drawing (two), internal and external threads is in released state among the figure.

Fig. 6-I adopts the cam kidney slot to be located at lifting to put for " folding actuating unit " is, the cam pilot pin is located at the embodiment front view on the half-nut.Internal and external screw thread is in released state among the figure.

Fig. 6-II be among Fig. 6-I G-G to cutaway view (one of).

Fig. 6-III is that H-H among Fig. 6-I is to cutaway view.

Fig. 6-IIII be G-G among Fig. 6-I to cutaway view (two), after figure was " falling the journey cam contour surface " 3.D.22 that replaces among Fig. 6-II with stage clip 32, internal and external threads was in the released state working condition chart.

Fig. 7 adopts for " folding actuating unit " is: cam contour surface is located on the lifting cover garden column casing 3E.1, and the cam pilot pin is located at the embodiment front view on the half-nut termination.Screw rod 4 is made " N " to counter-rotating, and internal and external screw thread is in the operating mode of separation.

Fig. 8 is the enforcement illustration of link-type " slider-crank mechanism " for " folding actuating unit ".This figure be F-F among Fig. 5-I to section-drawing (three), screw rod 4 is " N " to counter-rotating among the figure, the internal and external screw thread positive separation.

Fig. 9-I for the folding actuating unit is: outer garden radial cams and cam lifter plate cam pair, hinge axis O ₁Be located at the embodiment front view on the half-nut.

Fig. 9-II is the block diagram of half-nut 2F.

Figure 10-I is that " folding actuating unit " is identical with Fig. 9-I, only hinge axis O ₁Be located at the embodiment front view of supporting base 1G.

Figure 10-II is the block diagram of supporting base 1G.

Figure 11 is that " folding actuating unit " is identical with Fig. 9-I, has only cancelled the embodiment front view behind the support 1F.

Figure 12-I is identical with Figure 11, only installs the enforcement illustration of anti-channeling framework additional.

Figure 12-II is the block diagram of framework.

Figure 13 is the embodiment front view of the cam pair of eccentric cam cover 3H and shaped as frame hole conjugation for " folding actuating unit ".

Figure 14-I is that " folding actuating unit " is identical with Figure 13, and only the half cycle inner nut also is located at the embodiment front view in the eccentric cam cover simultaneously.

Figure 14-II for the A-A among Figure 14-I to analyse and observe (one of).

Figure 14-III is that A-A among Figure 14-I is to cutaway view (two).

Figure 15-I is that the overload clutch mechanism of half-nut closing device is the embodiment partial front elevation view of end-face friction bevel-type.

Figure 15-II is an A-A section-drawing among Figure 15-I.

Figure 16-I is that the safety clutch mechanism of half-nut closing device is the rise embodiment partial front elevation view of ring type of external friction.

Figure 16-II for B-B section-drawing among Figure 16-I (one of)---the external friction loops composition that rises.

Figure 16-III is B-B section among Figure 16-I (two)---the internal friction loops composition that rises

Figure 17-I is that the overload clutch mechanism of half-nut closing device is the embodiment partial front elevation view of axial guide pillar (or steel ball) formula.

Figure 17-II is that the overload clutch mechanism of half-nut closing device is the partial front elevation view of the embodiment of ball (or guide pillar) formula radially.

Figure 18-I is that half-nut closing device " soon steering unit " at a slow speed is the front view of " ratcheting pawl latch formula " lockout mechanism.

Figure 18-II be among Figure 18-I the A-A section-drawing (one of).

Figure 18-III is the A-A section-drawing (two) among Figure 18-I.

Figure 19-I is the another kind of conversion of Figure 18-I, changes the front view after ring spring and the V shape eccentric handle into.

Figure 19-II is that the K-K of Figure 19-I is to section-drawing.

Figure 20 is that the present invention's " fast automatic synchronous on-off formula half-nut device F " practical carrier is the embodiment front view of clamp bench.

Figure 21-I makes the embodiment front view of folding type for the crank of jack of the present invention.

Figure 21-II crank of the present invention is made the telescopic embodiment front view of folding.

Fig. 2-I is a first embodiment of the invention.It is characterized in that adopting 1 to a plurality of half-nuts, screw rod is supported by supporting base, the cross-sectional direction of screw rod one or more half-nuts that distribute equably, half-nut is arranged between supporting base and the lifting cover, half-nut is furnished with the closing device of automatic lifting, and lifting is arranged with and prevents the anti-channeling device that moves along screw axial.Its structure is that supporting base is provided with: supporting arm (1 or 2), and correspondingly have support holes (1 or 2), supporting mass (to comprise and carrier connecting device such as hinge axis O ₁Deng), the lifting guide and the locating part that match with half-nut lifting slide rail.Screw rod is the running-fit state and passes support holes and match with half-nut and jacking system (as the lifting cover) (comprise anti-end float misalignment device).Half-nut is during if any two or more, their relative screw rod center symmetric arrangement, and half-nut has less than the negative thread of half cycle and makes the guiding slide rail of dipping and heaving, and transmits lifting power executive item; " the automatic open-and-close mechanism of half-nut " of control half-nut syn opening and closing movement has folding actuating unit (as lifting cover and cam profile), overload clutch mechanism (as ratchet, ring spring etc.) and lift stop gear; Safety mechanism; Self-locking mechanism; Make screw rod have the speed-changing mechanism of the function of advancing and retreat at a slow speed soon.

Fig. 2-I is " a F nut " of the present invention, and adopting two lobe half-nuts, folding actuating unit is the front view of the embodiment of inner arc cam and the tension metal plate spring folding actuating unit of making half-nut.

" this mechanism " is made up of supporting base 1A, upper and lower two half-

nut

2A and 2A ', tension leaf spring 14, lifting cover 3A, ratchet 7, ring spring 6, spacing backing pin 15, pressing plate 17, lockout mechanism 5 and screw rod 4.Because of the practical carrier of " F nut " is a jack, so the method for attachment of supporting base is that hinge axis ear 1A.1 is (as Fig. 3-I).Screw rod 4 passes support holes 1A.2 and lifting cover endoporus 3A.1 cooperates with half-nut and lifting actuating unit.The 2A of two half-nuts and the left side of 2A ' be inboard guide pass 1A.3, the 1A.4 running-fit of the lateral surface 2A.2 of half volume and 2A.3 etc. and supporting base approximately, half of right-hand member is contained in the macropore of left end of lifting cover 3A, this hole is an inner arc formula cam, its cam contour surface by the wide face 3A.2 of two sections inner arc camstrokes of symmetry, 3A.3 and the two sections minimum radiuses inner arc 3A.4 (its also is to prevent that half-nut from closing the self-locking cam contour surface of the self-locking mechanism that separates behind the tooth simultaneously) that is Rmin and in addition two sections maximum radiuss be Rmax interior circular arc 3A.5 forms.Tension leaf spring 14 is contained in, (Fig. 3-II) or each half-nut replace tension spring 14 with separately independent spring respectively in groove 2A.4 on following two half-nuts and the 2A ' .4, thereby force, following two half-nut 2A ', 2A outwards separates, make half-nut

outer arc vertex

2A, 5 and 2A ' .5 be pressed in firmly all the time on the inner arc cam face of lifting cover, this inner arc formula cam contour surface is " the folding actuating unit " of " F nut ", its principle of work is apparent, making " M " as lifting cover 3A rotates to (clockwise direction), then with the termination vertex 2A.5 of half-nut, the contacted inner arc formula of 2A ' .5 cam profile will be by the 3A.5 of maximum radius, the 3A.4 that moves to minimum radius through lift cams profile 3A.2 ends, force half-

nut

2A and 2A ' to the tooth motion (hereinafter to be referred as telemechanical entad) of making a match of screw rod 4 center positions, (Fig. 2-II) at this moment, spacing backing pin 15 is just run into block 17 to mesh self-locking fully up to the tooth of internal and external threads.Otherwise, in like manner, make " N " as lifting cover 3A and rotate to (anticlockwise direction), then half-

nut

2A and 2A ' work " centrifugal motion " make the internal and external screw thread tooth separately, shown in Fig. 2-III.

About above-mentioned lifting cover 3A do " M " to or " N " torsional moment of rotating be from screw rod 4, pass to the lifting cover through being installed in " syn overload clutch mechanism " that lifting puts." overload clutch mechanism " among Fig. 2-I forms by being installed in ratchet 7 (bearing fit) among the lifting cover radial hole 3A.7 and the keyway 4.1 on ring spring 6 and the screw rod 4.There are two inclined-planes 7.1 the ratchet lower end, this termination, inclined-plane is pressed on the outer garden of screw rod 4 under the pressure of ring spring 6 promotes or is fallen in the keyway 4.1 of screw rod, when screw rod 4 is made " M " when rotating, then the side 4.1.1 of screw rod keyway 4.1 just runs into ratchet inclined-plane 7.1, and pushing away ratchet 7 and lifting cover 3A and together follow the lifting cover and together make " M " to rotation, so " folding actuating unit " on the lifting cover 3A is with half-

nut

2A, 2A ' work " entad gear motion ", collide and stop operating up to positive stop that lifting puts 17 and the backing pin 15 on the supporting base 1A, screw rod 4 is still made " M " to rotation this moment, then keyway side 4.1.1 acts on the pressure increasing on the ratchet inclined-plane 7.1, when this axial component that makes progress is added in downward pressure on the ratchet greater than ring spring 6, then the inclined-plane 7.1 of ratchet is just extruded by keyway 4.1, promptly separate the overload back, and screw rod still continues to do " M " to rotation, with automobile jack-up.Otherwise, screw rod is made " N " to rotation, then equally moment of torsion is delivered to lifting cover 3A by ratchet 7 and also makes " N " to rotation with screw rod 4, makes half-nut make " centrifugal motion " by " folding actuating unit " again, force internal and external threads to be opened, (see that Fig. 2-IV) the realization jack hurtles down.Speed when jack falls, if wish it is at a slow speed, then lockout mechanism 5 can be installed on supporting base 1, it is made up of latch 5.1, spring 5.2, plug housing 5.3, bearing pin 5.4 and eccentric handle 5.5, wherein latch 5.1 front ends are latch point 5.1.1, just in time aim at the lock hole 3A.8 on the lifting cover 3A.The lockout mechanism principle of work is as follows: when wish screw rod 4 have slowly move back, during slow-motion function (being that jack can rise or fall slowly slowly); At first operating handle is made " M " to rotation by screw rod 4, in making, the outside thread engagement, then will " arrow of eccentric handle 5.5 is placed to vertically (shown in Fig. 2-I); at this moment eccentric handle 5.5 is in minor axis location (5.5.2 that is the bottom surface of eccentric handle 5.5 contacts with spring perch 5.3 front end face 5.3.1); at this moment latch 5.1 just inserts in the lock hole 3A.8; lifting is overlapped 3A and is fixed and can not rotates; thus make the negative thread of half-nut 2 and screw flight always remain on engagement, this is just the same with traditional screw mechanism to be kept original slow-motion; the function of moving back slowly; When wishing that screw rod possesses F.F., during the rewind down function, eccentric handle 5.5 is put the position that is level to arrow, at this moment eccentric handle 5.5 is in major axis position (the side 5.5.1 that is eccentric handle 5.5 contacts with spring perch 5.3 front end face 5.3.1), this moment, latch point 5.1.1 withdrawed from the lock hole 3A.8 of lifting cover 3, lifting this moment cover 3 can be made " N " to rotation under screw rod and ratchet drive, half-

nut

2A and 2A ' are separated with internal and external threads on the screw rod, thereby make screw rod 4 have the function of crossing idle travel fast, if application vector is a jack, then just make this jack realize rising fast or falling.

Fig. 4-I is " F nut " of the present invention " a folding actuating unit ", and it is finished by two cover actuating units respectively.It is the same with Fig. 2-I with " actuating unit " that 2B ' closes the agomphiasis work automatically wherein to be responsible for half-nut 2B, is still inner arc formula cam contour surface 3B.2,3B.4,3B.5 on the lifting cover 3B left end macropore." actuating unit " that responsible half-nut separately moves automatically then born by the edge type strainer pair that cam path and cam pilot pin are formed, the edge type strainer groove 2B.2 of this cam pair and 2B ' .2 are arranged on the right-hand member side of half-

nut

2B and 2B ', it is 2B.3 and 2B ' .3 that cam contour surface is carried out in lifting, sees Fig. 4-III; On the left side 3B.2 of its cam pilot pin 16 and 16 ' be arranged on lifting cover 3B, perhaps press relative motion principle, its cam path is located at lifting and puts, and pilot pin correspondingly is separately positioned on separately the half-nut.Working process: when screw rod 4 is made " M " to rotation, by ratchet 7 torsional moment is passed to lifting cover 3B, also make " M " to rotation, radius variation from big to small by inner arc formula camstroke profile 3B.2, force half-

nut

2B, 2B ' work " entad to close the tooth motion ", till postive stop baffle 17 is by retaining, and screw rod 4 continues " M " and to rotation jack is risen at a slow speed (to see Fig. 4-II).Otherwise make " N " when screw rod 4 and rotate (as Fig. 4-III), then lifting is overlapped 3 B and is also made " N " to rotation, be contained among

cam pilot pin

16 and 16 on the lifting cover 3B ' enter cam path 2B.2 and the 2B ', 2 and act on mutually with the wide face 2B.3 of camstroke and 2B ' .3, make half-

nut

2B and 2B ' work " centrifugal motion ", the realization internal and external threads separates, and makes can come and go fast between screw rod and nut to move.Other are all the same with Fig. 2-I.

The feature of " the folding actuating unit " shown in Fig. 5-I is formed full edge type strainer pair by waist shape edge type strainer groove and cam pilot pin.Its waist shape edge type strainer groove 2C.2 and 2C ' .2 are located on its right end face of half-

nut

2C and 2C ', and the executive item of waist shape cam path is by lift cams profile 2C.4 and fall journey cam profile 2C.3 and form.Cam pilot pin 16 and 16 ' be arranged on the left side 3C.2 of lifting cover 3C.The range of movement stop gear of half-nut folding and the executive item of the self-locking mechanism after the folding are made up of two ends garden arc formula cam contour surface 2C.7,2C ' .7,2C.8, the 2C ' .8 of waist shape cam path.Working process: screw rod 4 is made " M " to rotating and drive lifting cover 3C and the pilot pin 16 on it, 16 ' also together make " M " rotates, by the effect of falling journey cam contour surface 20.4 and 2C ' .4 on the end face half-nut, force half-

nut

2C and 2C ' work " entad close tooth motion " up to pilot pin 16 and 16 ' with kidney slot termination 2C.7 phase resistance, the internal and external screw thread tooth meshes entirely, self-locking is (as Fig. 5-II).Otherwise screw rod 4 is made " N " to rotation, and the effect by the wide face 2C.B of lift cams and 2C ' .3 forces half-

nut

2C and 2C ' to make centrifugal motion, and internal and external screw thread is separated.All the other are the same with Fig. 2-I.

The another kind of version of " the folding actuating unit " shown in Fig. 6-1, it is characterized in that being located on the face cam 3D.1 of lifting cover 3D by waist shape cam path 3D.2 and 3D ' .2, " executions " part of its cam path is by lift cams profile 3D.2.1 and fall journey cam profile 3D.2.2 and spacing (double self-locking) cam profile 3D.2.4,3D.2.3 formed; Its cam pilot pin 16,16 ' be located on half-nut 2D and the 2D '.Half-nut 2D and 2D ' do the lifting open and close movement in the riser guide of the shaped as frame of supporting base 1D (or dovetail form etc.), the restriction of the end float misalignment of lifting cover 3D be by cam pilot pin 16,16 ' the raised head face 16.1 right flank 3D.4 that blocks face cam 3D.1 realize, about, the equivalent of the end float misalignment restriction of lifting cover 3D is a lot, as also cancelling the boss 16.1 of above-mentioned cam pilot pin, then this boss body is directly installed on the device that is connected with supporting base 1D.Because of " the folding actuating unit " of this Fig. 6-I and Fig. 5-I all is waist shape edge type strainer groove and cam pilot pin, (one of the relative installation that only is the two puts in lifting, another is on half-nut) so both course of action and principle of work are just the same, so no longer discuss.

Fig. 6-IV " folding actuating unit " is to do following transformation on the basis of Fig. 6-II: earlier the journey cam profile 3D.2.2 that falls among Fig. 6-II middle part of the side shape cam path 3D.2 and the 3D ' .2 is cancelled, (convenient for discussing, only the 3D.2 with one of waist shape cam path is an example) only keep lift cams profile 3D.2.1 and stop gear hold concurrently the executive item cam profile 3D.2.3 and the 3D.2.4 of self-locking mechanism, the 2nd, add in addition one the cover flexibility close tooth, rigidity self-locking type executive device, this device closes tooth spring (comprise single-piece contraction spring 32 or with being contained on each half-nut spring separately respectively) by flexibility and self-locking mechanism is formed, one of structure of above-mentioned self-locking mechanism is to adopt the cam pair of being made up of cam profile 3D.2.4 and cam pilot pin 16, and all the other structures are all consistent with Fig. 6-I and Fig. 6-II.This sample Fig. 6-IV described " folding actuating unit " essence is made up of two covers " actuating unit ": a cover is " the separating actuating unit " of finishing half-nut 2D and the automatic separating action of 2D ', the cam pair that one of its embodiment is made up of camstroke profile 3D.2.1 on the face cam 3D.1 and the cam pilot pin 16 on the half-nut 2D realizes, perhaps by pilot pin 16 is located on the face cam 3D.1, the cam pair that camstroke profile 3D.2.1 is located on the half-nut 2D realizes it; Another set of is that flexibility is closed tooth, the rigidity self-locking type " closes the tooth actuating unit ", and one of its embodiment is to adopt above-mentioned flexibility to close tooth rigidity self-locking type executive device to realize 100% the tooth rate of closing.

Fig. 7 " folding actuating unit " is improved on the basis of Fig. 2-I, its special basis is gone up improved, be the inside and outside Cylinder that 3E is overlapped in lifting to be provided with the radial cams pair that cam contour surface 3E.1.2 and 3E.1.1 and

cam conjugation pin

18,19 form realize, its

cam conjugation pin

18,19 is installed on the

power transmission pin

16E and 16E ' of half-nut termination 2E.1 and 2E ' .1, and all the other structures are the same with Fig. 2-I.

" folding actuating unit " among Fig. 8 realized by slider-crank mechanism.Crank 20 has two hinge shaft hole O ₂And O ₃, hinge shaft hole O ₂2F is connected with half-nut, O ₃3F is connected with the lifting cover.Other structures are similar to Fig. 2-I.During work, 3F makes " N " to rotation when the lifting cover, then hinge axis O ₃Also together make " N " to rotation, so the change of crank inclination alpha is big, so the hinge axis O of crank ₂And O ₂' do " centrifugal telemechanical ", half-nut 2F is separated with 2F ', till crank is met confined planes 2F.1.Otherwise 3F makes " M " when rotating with screw rod 4 when the lifting cover, then crank hinge axis O ₂And O ₂' will drive half-

nut

2F and 2F ' work " entad closing tooth moves ".

The cam pair that " the folding actuating unit " of Fig. 9-I and 9-II is made up of the lifter plate 3F.1 on cam contour surface on the half-nut 2F outer peripheral face (comprise lift profile 2F.2 and fall journey profile 2F.3) and the lifting cover 3F realizes.Half-nut 2F has negative thread 2F.6 less than half cycle, have greater than half unthreaded hole 2F.7, the both sides, front and back of screw rod external diameter and the wide face 2F.2 of camstroke is arranged on two hinge axis 2F.7 that are connected with carrier (jack), the outer peripheral face and fall the wide face 2F.3 of journey.Screw rod 4 passes the left end hole 1F.1 of support 1F successively, the unthreaded hole 2F.7 of half-nut, lifting trepanning 3F.3 and support right-hand member hole 1F.2.When the lifter plate 3F.1 of " actuating unit " forwarded uppermost position in fig-ure to, it just in time was the sliding fit state, and padding is on the inner chamber of top plane 2F.9 and support 1F on the outer peripheral face of half-nut 2F between the 1F.3 of baseplane.Above-mentioned " actuating unit " also can do following three kinds of simple equivalent conversion, as (1) with the above-mentioned former hinge axis 2F.7 that is connected with carrier (jack) that is installed in the both sides, front and back of half-nut 2F outer peripheral face, also can change on the two sides, front and back of the left side wall that is installed in support 1F, this support 1F just becomes the supporting base 1G of door assembly with hinge and glass in right hand and left axle like this, shown in Figure 10-I and 10-II, promptly on front and back sides 1G.8, the 1G.9 of the left end wall of supporting base 1G, install upper hinge axle 1G.7 and 1G.7 '.Remove the half-nut 2G that half-nut after the hinge axis 2F.7 promptly becomes the hinge-less axle like this, all the other are all duplicate as lifting cover 3G and 3F etc., are included in lifting and put ratchet 7 all is installed, and lockout mechanism 5F and 5G etc. all are installed on support.

(2) can be among Fig. 9-I with former support 1F cancellation, a leave strip hinge axis O ₁Half-nut 2F and lifting cover 3F, all the other mainly construct still the same, just become another kind of new " actuating unit " (shown in figure II), be that half-nut is 2G, the lifting cover is 3G, for anti-end float misalignment, on the lifter plate 3G.1 of lifting cover, be provided with backing pin 12, correspondingly on half-nut 2G, cut out deep trouth 2G.10 match with backing pin 12.

(3) equally also Fig. 9-I Central Plains support 1F cancellation (all the other are the same) is just become another kind of new " actuating unit ", its half-nut is 2F, the lifting cover is 3F, be anti-end float misalignment, set up anti-channeling framework 33, have two earholes 33.1 and 33.2 to be enclosed within respectively before and after the half-nut 2F on the hinge axis 2F.7 on the two sides on the frame.

Principle of work about " folding actuating unit " among Fig. 9-I is as follows: 3F is overlapped in lifting and the lifter plate 3F.1 on it makes " M " together when rotating when screw rod 4 drives by ratchet 7, this lifter plate 3F.1 is the lift cams profile 2F.2 on the outer peripheral face of half-nut 2F and fall journey cam profile 2F.3 and make planet motion just, because of the size of these cam profiles apart from the center of negative thread 2F.6 changes, as the size maximum of 2F.2 cam profile to the center of negative thread 2F.6,2F.3 is just minimum to the center size.So lifting cover endoporus 3F.3 and with it the center of the screw rod 4 of bearing fit to the distance at the center of the negative thread 2F.6 of half-nut 2F also along with lifter plate 3F.1 work " M " diminishes to planetary rotation, force the outside thread 4.3 on the screw rod to be meshed with negative thread 2F.6 on the half-nut.On the contrary, screw rod 4 drives lifting cover 3F and does " N " rotation, and then internal and external threads just separately.The front and back width of this outer support 1F just in time equates with the front and back sides 2F.11 of the left part of half-nut and the width between the 2F.12, just in time be clipped in jack connecting rod 10.1,10.2 lifting guide rail effect between the sheet, so screw rod 4 can only be done upper and lower dipping and heaving between connecting rod piece.

" folding actuating unit " shown in Figure 13 realized by the upper and lower two plane 1H.4 of the shaped as frame oblong aperture of eccentric cam cover 3H and half-nut supporting base 1H and eccentric cam kinematic pair that 1H.3 forms.Half-nut support 1H has oblong aperture in the middle of being frame shape, framework, and the 3H.2 surface, eccentric outer garden of the upper and lower plane 1H.4 in this hole and 1H.3 and eccentric cam 3H is bearing fit; Be respectively equipped with on frame left wall 1H.7 and the right side wall 1H.8 less than the negative thread 1H.6 of half cycle and 1H.5 with greater than the half cycle unthreaded hole 1H.1 and the 1H.2 of screw rod 4 external diameters.Screw rod 4 passes left wall unthreaded hole 1H, 1, eccentric cam endoporus 3H.1 and right wall unthreaded hole 1H.2 successively.In addition, the forward and backward side of frame left wall is provided with hinge axis O1 and is connected with 10.2 with the very heavy acrosome 10.1 of practical carrier.

The wall thickness of this " eccentric cam cover " 3H, because of eccentric garden relation causes thick on one side, one side book, so this drive that is enclosed within screw rod 4 is made " M " down when rotating, the thickness of eccentric bushing 3H then, just in time forward the most the next center that contacts screw rod 4 with the lower plane 1H.3 of supporting base to and be elevated, make its internal and external screw thread engagement.Otherwise screw rod 4 band eccentric bushing 3H make " N " to rotation, and what the thickness of this eccentric bushing 3H forwarded supporting base 1H to goes up 1H.4 place, plane most, and then internal and external threads just separates.

" folding actuating unit " shown in Figure 14-I realized by the upper and lower two plane 1J.1 of the outer peripheral face eccentric cam profile 2J.1 of half-nut 2J and the shaped as frame oblong aperture among the bearing support 1J and camming movement pair that 1J.2 forms.

The wide face 2J.1 of the outer peripheral face eccentric cam of half-nut 2J is actual be one with O ₃There are two eccentric orfices on post surface, outer garden for the garden heart in half-nut 2J body, the center in its hole is respectively: O ₂And O ₄, they are at a distance of garden heart O ₃Eccentric throw all equal e, (e is a bit larger tham the ridge tooth height), the center is O ₄Eccentric orfice be the half unthreaded hole 2J.3 of a diameter greater than screw rod 4 external diameters; The center is O ₃Eccentric orfice be a negative thread 2J.4 less than half cycle, on half-nut 2J, be provided with 35,36 and radial hole 2J.5 of two lift locating dowel pins, endoporus is furnished with ratchet 34, and annular stage clip 6 is being pressed ratchet 34, and the cone of ratchet termination 34.1 is pressed in the outer garden or keyway 4.1 of screw rod 4.

Supporting base 1J is square frame shape, is furnished with half-nut 2J in the frame hole, and screw rod passes left frame support holes 1J.3, half-nut hole and the right frame support holes 1J.4 of supporting base 1J successively.(axle center is O to be installed on hinge axis 1J.5 in the forward and backward side of left frame arm 1J.6 ₁), be connected with practical carrier (jack).

The shape of closing the cam contour surface 2J.1 on the outer peripheral face of its half-nut of tooth performance 2J for improvement also can be designed to other cam curves as required except Cylinder.

This mechanism principle is apparent, drives half-nut 2J as screw rod 4 and does " M " rotation, and eccentric outer garden 2J.1 goes up apart from the negative thread center O ₂The solstics forwards the inner chamber lower plane 1J.2 place of bearing support, then negative thread center O to ₁Center O with screw rod 4 ₅Overlap, make the internal and external threads engagement, locating dowel pin 35 is collided with lower plane 1J.2 and is ended at this moment, shown in Figure 14-II.Otherwise screw rod 4 is made " N " to counter-rotating, drives half-nut 2J and also makes " N " to rotation, shown in Figure 14-II.When the negative thread center O ₂Arc position, garden apart from eccentric outer garden 2J.1 closest range contacts with lower plane 1J.2, then the negative thread center O ₂Away from the screw rod center O ₅, realize that internal and external threads separates, locating dowel pin 36 is collided with lower plane 1J.2 and is ended at this moment.

In sum, embodiment about the relative folding actuating unit of screw rod, nut of " fast automatic synchronous on-off formula half-nut device F " of the present invention, equivalent mechanism is a lot, the Achimedean spiral end-face helical that is applied on the lathe scroll chuck as usual just can replace the edge type strainer mechanism among Fig. 4-I, the number of half-nut for another example both can 1 or 2, also can be more than two, because of these all within category of the present invention, so do not exemplify one by one.

About " syn overload clutch mechanism " in the present invention " fast automatic synchronous on-off formula half-nut device F " " the automatic open-and-close mechanism of half-nut " except " overload clutch mechanism " that ratchet described in Fig. 2-I 7 and ring spring 6 formed, other can play the equivalence " overload clutch mechanism " of overload clutch effect, have of all kinds, from form, unidirectional type is arranged, reversible, override type, and electromagnetism, liquid, variety of way such as pneumatic, from the overload clutch element, can be (unidirectional with ratchet, reversible), the tooth embedding, steel ball, lead the garden post, cone of friction (dish, sheet, piece, the garden, the pad) and various elastic element (as various springs, elastic piston ring, elastic expansion ring, ringfeder etc.), all safety clutchs are the equivalent mechanism of overload clutch of the present invention mechanism in a word, enumerate the embodiment of several equivalent overload clutch mechanisms with the overload clutch mechanism shown in Fig. 2-I below.Figure 15-I, Figure 15-II is the friction-type overload clutch mechanism of friction ring (or cone of friction), its principle of work is that friction ring (awl) 21 is contained in the lifting cover 3A, and be enclosed within slidably on the outer garden of screw rod 4, friction face (awl) 21.1 is under the effect of stage clip 22, tightly be pressed on right friction face (awl) 3A.10 of lifting cover 3A, friction ring (awl) 21 is connected with screw rod 4 by lead key 23, when screw rod 4 rotates, its drive torque is by keyway 4.1, lead key 23, friction ring friction face (awl) 21.1 passes to lifting cover 3A, and be with it together to rotate, run into the lift inhibiting device and stop operating up to lifting cover 3A, but screw rod will be rotated further, this friction pair skids with regard to overload, but do not hinder screw rod to be rotated further, to finish the predetermined drive task of bolt and nut pair.The contact surface 21.1 and the 3A.10 of above-mentioned friction ring (awl) also can change castellated interaction into, under stage clip 22 effects, as the carry-over moment overload, then just skid between the tooth embedding, and the compress variation of stage clip 22 is greater than the height of tooth embedding certainly.

Figure 16-I and 16-II are outer garden friction rising ring type overload clutch mechanism.This example only is friction ring 21 and the spring 22 that replaces among Fig. 9 with outer garden friction the rising ring 25 among Figure 16-I, still block the ring 25 that rises with back-up ring 24, on the Cylinder of ring 25 that rises, open a shaft orientation opening groove 25.1, this rises by ring 25 when free state, the diameter in its outer garden 25.2 is greater than the internal diameter of the endoporus 3A.11 of lifting cover 3A, during assembling opening 25.1 is slightly drawn in, pack into and unclamp again among the endoporus 3A.11, ring 25 the outer garden 25.2 of rising so just relies on elasticity to rise to be attached on the inner hole wall of endoporus 3A.11 of lifting cover 3A, and produce certain friction force, the internal diameter of this ring that rises is more bigger than screw rod external diameter, and be connected with screw rod 4 by lead key 23, its working process is identical with friction ring type among Fig. 9-I, and only the friction face that overload is skidded from end face (or on conical surface) is changed on the outer garden of the ring that rises.

Figure 16-III is the endoporus friction ring type overload clutch mechanism of rising, principle of work: basic identical with Figure 16-II.Only be that the endoporus friction-type ring that rises 26 also has the internal diameter of shaft orientation opening groove 26.1 its endoporus 26.2 under free state littler than the external diameter 4.9 of screw rod 4, after the assembling, its endoporus is under elastic reaction, embrace on the outer garden post of screw rod 4, and produce certain friction force (not having keyway on the screw rod 4), the external diameter of internal expanding ring 26 is littler than the endoporus internal diameter of lifting cover 3A, and by power transmission pin 27, the drive torque of screw rod is passed to lifting cover 3A.Working process is identical with Figure 16-II, only is to transship the friction face that skids, and is directly born by the outer garden of screw rod 4 and the friction face that rises between the ring endoporus.

Figure 17-I is axial distribution guide pillar (or steel ball) formula overload clutch mechanism, principle of work: sky is enclosed within on the left side of screw rod 4 upper sliding sleeves 28, radial hole is arranged, dress small pressure spring 29 and guide pillar 30 (or steel ball) in the hole, be meshed with the resistance conelet hole 3A.12 on being arranged on lifting cover 3A right side, working process and Figure 15-I are also basic identical, only are with the pure end-face friction formula among Figure 15-I, make conelet hole and guide pillar (or steel ball) resistance type among Figure 17-I into.Mechanism shown in Figure 17-II is the equivalent mechanism of mechanism shown in Figure 17-I, and only the radial distribution that the guide pillar hole of the axial distribution among Figure 17-I is changed among Figure 17-II gets final product, and 3A.13 is the axial resistance groove among the figure, and principle of work is identical.Also have the many kinds of overload clutch mechanisms that become by various overload unit construction in a word, be the equivalent mechanism of the overload clutch mechanism among the present invention.

The latch locking mechanism 5 of version in Fig. 2-I of " handling controlling machine soon, at a slow speed " among the present invention " fast automatic synchronous on-off formula half-nut device F ", Figure 19-I be another kind of " pawl type lockout mechanism " 5 '.Its structure is basic the same with bolt-type lockout mechanism 5, only be to replace garden cylinder plug 5.1 with the ratchet among former Fig. 2-I 7, so just the latch point 5.1.1 of former garden cylinder plug 5.1 is changed into the pawl type latch point 5 ' .1.1 of Type of Double-Cone, or change the pawl type latch point of single conical surface type into, be that the detent pin point has only on one side be inclined-plane and another side is a right angle face formula, they can be inserted in the keyway 4.1 of screw rod 4 under the manipulation of eccentric handle 5 ' .5 and control, perhaps from keyway 4.1, extract, its plug housing 5 ' .2 is fixed on the lifting cover 3A, for handled easily can make the eccentric handle 5 ' .5 of chip arrowhead form into two V shape eccentric handle 36, it matches with the termination of ratchet 30, for mounting spring 6 is correspondingly overlapped the sub-3A.10 of grooving on the 3A, grooving 30.3 on ratchet 30 in lifting.

This ratchet lockout mechanism principle of work: when eccentric 5 ' .5 is placed to the upright position, as Figure 18-II, ratchet can inject in the keyway 4.1 under stage clip 5 ' .2 effect, its effect is the same with " lockout mechanism " 5 of Fig. 2-I, rotate as making " M " when screw rod 4, then can drive lifting cover 3A and do " M " rotation, and make half-nut 2A, 2A ' and screw flight be in engagement by the folding actuating unit by keyway 4.1 and the ratchet conical surface 5 ' .1.2.As this moment eccentric handle 5 ' .5 level of putting into; as Figure 18-III; then ratchet termination 5.1.1 is lifted the keyway 4.1 that leaves screw rod 4; like this; no matter screw rod 4 makes " M " or " N " to rotation; all can not make lifting cover 3A follow screw rod 4 to rotate; thereby protected half-nut and screw flight tooth still to be in the engagement self-locking state; this and traditional bolt and nut transmission just have no difference; slow-motion, the function of moving back have slowly promptly been realized; as carrier is jack, then can realize making jack to have the function that rises or fall slowly slowly this moment.

Fig. 1-II described " rapid rising jack ", the centre bearing hole that its screw rod 4 left end heads pass left hinge axis O4 is connected with the driving device of input (driving) moment of torsion, these drivings device are except manually with the direct rotating screw bolt 4 of handle (" directly type hand ") with manually drive " the deceleration type hand " of screw rod 4 with handle rotation change speed gear box again, it is characterized in that its own power source on the available automobile, use electrical motor 10.8 to drive reductors 10.9 and drive, " power type " of screw rod 4 or not only can be manually but can be electrically operated " manual and electric double-purpose type ".

Form by handle body 10,7.5 and crank 10.7.1,10.7.2 about the handle among Fig. 1-I 10.7,, make folding type or telescopic to them so long for reducing volume, being convenient to collection.Figure 21-I is characterized as: crank 10.7.1, the 10.7.2 of bar handle 10.7 can be the quick folding in axle center with hinge axis 10.7.3 and 10.7.4 respectively, and spring 10.7.6 and steel ball 10.7.7 finish the location.Figure 21-II does the mechanism of fore and aft motion among the endoporus 10.7.8 that packs crank 10.7 crank 10.7.1 into hollow, and 10.7.9 is the location ring spring, and handle body 10.7.5 can be made into folding type or telescopic in case of necessity.

More than the summary, though the present invention be a kind of can be soon, the jack of lifting at a slow speed, but the most essential invention core is still " fast automatic synchronous on-off formula half-nut device F ", the application vector of this mechanism is very extensive, if application vector is a jack, then this very heavy embodiment is aforesaid title of the present invention.Same is clamp bench as application vector, and then denomination of invention is " a kind of can be soon, the clamp bench of folding " at a slow speed or the like.For example, Figure 20 is exactly the former practical carrier " jack " of " the fast automatic synchronous on-off formula half-nut device F " shown in Fig. 2-I, changes the embodiment that practical carrier is " clamp bench " into, contrasts this two embodiment as can be known.The method of repacking is very simple in fact, as long as change and of the method for attachment of each practical carrier with " F nut ", as the hinge axis O1 on the supporting base 1A among Fig. 2-I is removed, change into the baseplane 1A ' 1 on the supporting base 1A ' and vertical plane surface 1A ' .2 corresponding plane of orientation a1 and a2 direct and on the bench vice fixed caliper " a " and contacting, and be fastened with screw " h ", in addition, the moving caliper " c " of screw rod 4 and bench vice links and gets final product, and other need not be changed.The field of application of " fast automatic synchronous on-off formula half-nut device F " of the present invention in a word is that " application vector " is except that jack, also can be used on: all need do clamp bench, lathe gripping tongs, pipe tongs, machine tool sliding table, lathe tailstock, adjustment height scaffold for building or the like and other place of driving device and be combined into new mechanism with screw rod, nut transmission, the category that all belongs to the present invention, (only need adopt some conspicuous methods, the connectivity scenario that changes with above-mentioned these " practical carriers " gets final product).

Claims

1. a rapid rising jack has: screw rod 4, base 10.5, jacking 10.6, lifting connecting rod mechanism 10.1～4, left hinge axis O ₁, right hinge axis O ₂Composition is characterized in that: (1) is at left and right hinge axis O ₂And O ₁, be provided with " fast automatic synchronous on-off formula half-nut device F " (hereinafter to be referred as " F nut "); (2) left hinge axis O is passed in screw rod 4 left part terminations ₂Centre hole is connected with the manual or power operated driving device of input drive torque, and on the outer garden of screw rod 4 right parts screw thread is arranged, and is located at right hinge O ₁On " F nut " in corresponding half-nut match; (3) " F nut " is made up of following three parts: 1. supporting base; 2. one or more half-nuts; 3. half-nut syn open-and-close mechanism.The support holes that has screw thread to pass the supporting base in " F nut " on the screw rod matches with half-nut and half-nut syn open-and-close mechanism, the characteristics of " F nut " these three component parts: 1. supporting base which is provided with: the part that is connected with application vector, with the relatively rotating and move axially the part that matches, the part that matches with the half-nut open and close movement, also be provided with stop gear, safety mechanism, the fast speed-changing mechanism at a slow speed of control open and close movement scope of screw rod; 2. half-nut, its quantity is one or more, which is provided with: the executive item that be not more than the negative thread of half cycle, the guiding bearing fit face of realizing open and close movement or part, matches with stop gear and self-locking mechanism also is provided with the outer peripheral face and the executive item that produce and transmit folding (lifting) power and comprises cam profile or face or cam pilot pin or power transmission pin; 3. " half-nut syn open-and-close mechanism ", its component part has: the relative folding actuating unit between syn overload clutch mechanism, screw rod and half-nut comprise flexibility close prevent after stop gear, jack that the folding actuating unit of tooth rigidity self-locking type (following all the system abbreviates " folding actuating unit " as), half-nut close self-locking mechanism behind the tooth and folding stroke hoist half-nut meet accident the safety mechanism of abruption, can have when jack is descended function at a slow speed soon, at a slow speed " selector gear ".

2. rapid rising jack as claimed in claim 1, the structure that it is characterized in that " folding actuating unit " in " the automatic open-and-close mechanism of half-nut " of " F nut " is: screw rod 4 passes the support holes 1A.2 of supporting base 1A and the endoporus 3A.1 of lifting cover 3A, two relatively screw rod 4 split mutually, close the half-nut 2A and the 2A ' of (lifting) motion, their left side is the lateral surface 2A.2 of half volume approximately, 2A ' .2 and 2A.3, the slide rail 1A.3 of 2A ' .3 and supporting base 1A, 1A.4 running-fit, half volume on right side is contained in the macropore of left end of lifting cover 3A, its " folding actuating unit " is the inner arc formula cam gear on this macropore, this cam contour surface is by the wide face 3A.2 of two sections inner arc camstrokes of symmetry, 3A.3 with two sections minimum radiuses inner arc 3A.4 (its also is to prevent that half-nut from closing the self-locking cam contour surface of the self-locking mechanism that separates behind the tooth simultaneously) that is Rmin and in addition two sections maximum radiuss be Rmax interior circular arc 3A.5 forms, tension spring 14 is contained in, in groove 2A.4 on following two half-nuts and the 2A ' .4 or each half-nut replace tension spring 14 with separately independent spring respectively, force, following two half-nut 2A ', 2A outwards separates, thereby outer arc vertex 2A.5 and 2A ' .5 are pressed on the surface of inner arc formula cam profile of lifting cover all the time firmly, and its pressing plate 17 and backing pin 15 are formed the stop gear of the folding stroke of half-nuts.

3, rapid rising jack as claimed in claim 1, the another kind of version of " folding actuating unit " in " the automatic open-and-close mechanism of half-nut " of " F nut " requires in 2 " folding actuating unit " to do following improvement aforesaid right, being about to half-nut is separately finished by two covers " actuating unit " respectively with the action of closing tooth automatically automatically, all the other are all identical, " actuating unit " that promptly wherein responsible half-nut closes tooth and self-locking automatically is still the interior lonely formula cam contour surface 3B.2 on the lifting cover 3B left end macropore, 3B.4,3B.5, being responsible for " actuating unit " of the automatic separating action of half-nut is then born by the edge type strainer pair that cam path and cam pilot pin are formed, the edge type strainer groove 2B.2 of this cam pair and 2B ' .2 are arranged on the right-hand member side of half-nut 2B and 2B ', and the cam contour surface of carrying out separating action is 2B.3 and 2B ' .3; On the left side 3B.2 of its cam pilot pin 16 and 16 ' be arranged on lifting cover 3B, perhaps press relative motion principle, its cam path is located at lifting and puts, and pilot pin correspondingly is separately positioned on separately the half-nut.

4. rapid rising jack as claimed in claim 1, the another kind of version that it is characterized in that " folding actuating unit " in " the automatic open-and-close mechanism of half-nut " of " F nut " is a kind of full end-surface type cam pair, is made up of waist shape edge type strainer groove and cam pilot pin.Its waist shape edge type strainer groove 2C.2 and 2C ' .2 are located at respectively on its right end face of half-nut 2C and 2C ', the folding executive item of its waist shape cam path is by lift cams profile 2C.4 and fall journey cam profile 2C.3 and form, cam pilot pin 16 and 16 ' be arranged on the left side 3C.2 of lifting cover 3C, the stop gear of the range of movement of its half-nut folding and the executive item of the self-locking mechanism after the folding are made up of two ends garden arc formula cam contour surface 2C.7,2C ' .7,2C.8, the 2C ' .8 of waist shape cam path.

5. rapid rising jack as claimed in claim 1, the another kind of version that it is characterized in that " folding actuating unit " in " the automatic open-and-close mechanism of half-nut " of " F nut " is that waist shape cam path 3D.2 and 3D ' .2 are located on the face cam 3D.1 of lifting cover 3D, half-nut is done open and close movement " executive item " by the lift cams profile 3D.2.1 on the cam path with fall journey cam profile 3D.2.2 and formed, and the stop gear of the open and close movement scope of its half-nut and " executive item " of the self-locking mechanism after the folding are by garden arc formula cam profile 3D.2.4,3D.2.3 form; Its cam pilot pin 16,16 ' be located on half-nut 2D and the 2D '.Half-nut 2D and 2D ' do open and close movement in the guide rail of the shaped as frame of supporting base 1D or dovetail form, the executive item of the anti-channeling device of the anti-end float misalignment of lifting cover 3D be cam pilot pin 16,16 ' raised head face 16.1, the right flank 3D.4 that it blocks face cam 3D.1 realizes anti-channeling, perhaps cancel the boss 16.1 on the above-mentioned cam pilot pin, then this boss body is directly installed on the device that is connected with supporting base 1D.

6. rapid rising jack as claimed in claim 1, it is characterized in that " folding actuating unit " in " the automatic open-and-close mechanism of half-nut " of " F nut " is " the folding actuating unit " that another kind of flexibility is closed tooth rigidity self-locking type, its version is that the journey cam profile 3D.2.2 that falls among the waist shape cam path 3D.2 of structure described in the claim 5 and the 3D ' .2 is cancelled, for discussing conveniently, only the 3D.2 with one of waist shape cam path is an example) only keep lift cams profile 3D.2.1 and stop gear hold concurrently the executive item cam profile 3D.2.3 and the 3D.2.4 of self-locking mechanism, the 2nd, add in addition one the cover flexibility close tooth rigidity self-locking type executive device, this device closes tooth spring (comprise single-piece contraction spring 32 or be contained in independent spring on each half-nut respectively) by flexibility and self-locking mechanism is formed, one of structure of above-mentioned self-locking mechanism is to adopt the cam pair of being made up of cam profile 3D.2.4 and cam pilot pin 16, all the other structures all with claim 5 in identical, this sample claim described " folding actuating unit " essence is made up of two covers " actuating unit ": a cover is " the separating actuating unit " of finishing half-nut 2D and the automatic separating action of 2D ', the cam pair that one of its embodiment is made up of camstroke profile 3D.2.1 on the face cam 3D.1 and the cam pilot pin 16 on the half-nut 2D realizes, perhaps by pilot pin 16 is located on the face cam 3D.1, the cam pair that camstroke profile 3D.2.1 is located on the half-nut 2D realizes it; Another set of is that to close tooth rigidity self-locking type one of its embodiment of " closing the tooth actuating unit " be to adopt above-mentioned flexibility to close tooth rigidity self-locking type executive device to realize 100% the tooth rate of closing to flexibility.

7. rapid rising jack as claimed in claim 1, the another kind of structural shape that it is characterized in that " folding actuating unit " in " the automatic open-and-close mechanism of half-nut " of " F nut " is improved on the architecture basics of " folding actuating unit " described in the claim 2, lifting is overlapped in the 3E, outer Cylinder is provided with cam contour surface 3E.1.2 and 3E.1.1 and cam conjugation pin 18, the 19 radial cams pairs of forming realize, its cam conjugation pin 18,19 are installed in half-nut termination 2 E.1 and on the power transmission pin 16E and 16E ' of 2E ' .1, and other structures are all identical;

8 rapid rising jacks as claimed in claim 1, the another kind of structural shape that it is characterized in that " folding actuating unit " in " the automatic open-and-close mechanism of half-nut " of " F nut " is improved on the architecture basics of " folding actuating unit " described in the claim 2, is realized by slider-crank mechanism.Crank 20 has two hinge shaft hole O ₂And O ₃, its hinge shaft hole O ₂2F is connected with half-nut, O ₃3F connects mutually with the lifting cover.Other structures are identical;

9. rapid rising jack as claimed in claim 1 is characterized in that the structure of " folding actuating unit " in " the automatic open-and-close mechanism of half-nut " of " F nut " is: overlap the cam pair that the lifter plate 3F.1 on the 3F forms by cam contour surface on the half-nut 2F outer peripheral face (comprise lift profile 2F.2 and fall journey profile 2F.3) and lifting and realize.Inner nut 2F.6 less than half cycle is arranged in the body cavity of half-nut 2F, greater than half unthreaded hole 2F.8 of the outer warp of screw rod, there are two hinge axis 2F.7 that are connected with the jack of one of practical carrier the both sides, front and back, have wide face 2F.2 of camstroke and cam to fall the wide face 2F.3 of journey on the outer peripheral face.Screw rod 4 passes the left end hole 1F.1 of support 1F, unthreaded hole 2F.8, lifting trepanning 3F.3 and the support right-hand member hole 1F.2 of half-nut successively.When the lifter plate 3F.1 of " actuating unit " forwarded uppermost position in fig-ure to, it just in time was sliding fit state padding on the inner chamber of top plane 2F.9 and support 1F on the outer peripheral face of half-nut 2F between the 1F.3 of baseplane.Above-mentioned " actuating unit " or (1) are with the above-mentioned former hinge axis 2F.7 that is connected with carrier (jack) that is installed in the both sides, front and back of half-nut 2F outer peripheral face, also can change on the two sides, front and back of the left side wall that is installed in support 1F, support 1F just becomes the supporting base 1G that has hinge axis like this, promptly at former and later two sides 1G8 of the left end wall of supporting base 1G, install upper hinge axle 1G.7 and 1G.7 ' on the 1G9 respectively, remove the half-nut 2G that half-nut after the hinge axis 2F.7 promptly becomes the hinge-less axle, all the other are all just the same as this lifting cover 3G and above-mentioned structures such as lifting cover 3F; Or (2) cancel former support 1F a leave strip hinge axis O ₁Half-nut 2F and lifting cover 3F, all the other mainly construct still the same, promptly half-nut is 2F, the lifting cover is 3F, for anti-end float misalignment, is provided with backing pin 12 on the lifter plate 3F.1 of lifting cover, correspondingly cuts out deep trouth 2F.10 to match with backing pin 12 on half-nut 2F; Or (3) cancel former support 1F, and all the other mainly construct still the same, and its half-nut is 2F, the lifting cover is 3F, for preventing end float misalignment, set up anti-channeling framework 33, two earholes on it: on the 33.1 and 33.2 hinge axis 2F.7 that are enclosed within respectively on the two sides, front and back of nut 2F;

10. rapid rising jack as claimed in claim 1, the structure that it is characterized in that " folding actuating unit " in " the automatic open-and-close mechanism of half-nut " of " F nut " is realized by the upper and lower two plane 1H.4 of the shaped as frame oblong aperture of eccentric cam 3H and half-nut supporting base 1H and eccentric cam kinematic pair that 1H.3 forms, half-nut support 1H is frame shape, oblong aperture is arranged in the middle of the framework, and the outer garden 3H.2 of the upper and lower plane 1H.4 in this hole and 1H.3 and eccentric cam 3H is bearing fit; On frame left wall 1H.7 and right side wall 1H.8, be respectively equipped with less than the negative thread 1H.6 of half cycle and 1H.5 with greater than the half cycle unthreaded hole 1H.1 and the 1H.2 of screw rod 4 external diameters, screw rod 4 passes left wall unthreaded hole 1H.1, eccentric cam endoporus 3H.1 and right wall unthreaded hole 1H.2 successively, in addition, the front and back side of frame left wall is provided with hinge axis O ₁Be connected with 10.2 with the very heavy acrosome 10.1 of practical carrier, on eccentric cam 3H, be provided with overload clutch device 7 in addition, on framework 1H, be provided with " speed-changing mechanism " 5;

11 rapid rising jacks as claimed in claim 1, the camming movement pair that the another kind of version that it is characterized in that " folding actuating unit " in " the automatic open-and-close mechanism of half-nut " of " F nut " is made up of the upper and lower two plane 1J.1 and the 1J.2 of cam profile 2J.1 on the outer peripheral face of half-nut 2J and the shaped as frame oblong aperture among the bearing support 1J realizes.The wide face 2J.1 of eccentric cam on the outer peripheral face of half-nut 2J is actual be one with O ₃There are two eccentric orfices on post surface, outer garden for the garden heart in half-nut 2J body, the center in its hole is respectively: O ₂And O ₄, they are at a distance of garden heart O ₃Eccentric throw all equal e, e is a bit larger tham the ridge tooth height, is O about the center ₄Eccentric orfice be the half unthreaded hole 2J.3 of a diameter greater than screw rod 4 external diameters; The center is O ₂Eccentric orfice be a negative thread 2J.4 less than half cycle, on half-nut 2J, also be provided with two lift locating dowel pins 35,36 and radial hole 2J.5, is furnished with ratchet 34 in this hole, annular stage clip 6 is pressing ratchet 34 to force the cone 34.1 of ratchet termination to be pressed in the outer garden or keyway 4.1 of screw rod 4, supporting base 1J is square frame shape, is furnished with half-nut 2J in the frame hole, screw rod passes the left frame support holes 1J.3 of supporting base 1J successively, half-nut hole and right frame support holes 1J, 4, before left frame arm 1J.6, rear side is installed on hinge axis 1J.5 (axle center is O1) and is connected with practical carrier (jack);

The shape of closing the cam contour surface 2J.1 on the outer peripheral face of its half-nut of tooth performance 2J for improvement also can be designed to other cam curves as required except Cylinder;

12. as one of any described rapid rising jack in the claim 1～11, it is characterized in that " syn overload clutch mechanism " in " the automatic open-and-close mechanism of half-nut " of " F nut ", structure be:

On lifting cover 3A, be provided with radially ratchet holes 3A.7, be provided with ratchet 7 in the ratchet holes 3A.7, be combined with annular extension spring 6 on the ratchet 7, simultaneously being provided with one or more axial keyways 4.1 on screw rod 4 makes it to match with ratchet 6, it is the inclined-plane that the lower end of ratchet 7 has two inclined-planes 71 to have only one as required sometimes, another is the right angle face, promptly constitutes folk prescription to ratchet;

13. as any one the described rapid rising jack in the claim 1～11, the another kind of structural shape that it is characterized in that " syn overload clutch mechanism " in " the automatic open-and-close mechanism of half-nut " of " F nut ", it is characterized in that constituting by lifting cover 3A, friction ring (awl) 21, lead key 23, stage clip 22, back-up ring 24, friction ring (awl) 21 is contained in the lifting cover 3A, and by lead key 23 and screw rod 4 bindings, be provided with axial keyway 4.1 simultaneously on the described screw rod 4, make it to match with lead key 23; Or the contact surface 21.1 of cone of friction (ring) and 3A.10 are made into castellated, strengthen stage clip 22 deflections, to reserve the sway space that is slightly larger than tooth embedding height;

14. as any one the described rapid rising jack in the claim 1～11, the another kind of structural shape that it is characterized in that " syn overload clutch mechanism " in " the automatic open-and-close mechanism of half-nut " of " F nut ", it is characterized in that forming by elastic expansion ring 26, power transmission pin 27, lifting cover 3A, back-up ring 24, for producing enough friction force, elastic expansion ring 26 is provided with opening 26.1, under free state, its diameter of bore is more smaller than the external diameter of screw rod 4, be installed between screw rod and the lifting cover, link with lifting cover 3A by power transmission pin 27;

15 as any one the described rapid rising jack in the claim 1～11, the another kind of structural shape that it is characterized in that " syn overload clutch mechanism " in " the automatic open-and-close mechanism of half-nut " of " F nut " by elasticity rise also 25, lead key 23, back-up ring 24 form, opening 25.1 is arranged on the elastic expansion ring 25, under free state, the outside dimension in its outer garden 25.2 of ring of rising is more bigger than the endoporus 3A.11 aperture of lifting cover, be installed between screw rod and the lifting cover, screw rod is provided with axial keyway 4.1, links by lead key 23 and screw rod;

16. as any one the described rapid rising jack in the claim 1～11, the another kind of structural shape that it is characterized in that " syn overload clutch mechanism " in " the automatic open-and-close mechanism of half-nut " of " F nut " is by sliding sleeve 28, lead key 23, spring 29, guide pillar 30, lifting cover 3A forms, (or a several) resistance conelet hole 3A.12 is arranged on the right side of lifting cover 3A, guide pillar 30 and spring 29 are contained in the axial aperture of sliding sleeve 3A left side, guide pillar 30 cooperates with resistance conelet hole 3A.12, sliding sleeve 28 links by lead key 23 and screw rod 4, screw rod 4 is provided with axial keyway 4.1 and cooperates with lead key 23, and guide pillar 30 can replace with steel ball;

17 as any one the described rapid rising jack in the claim 1～11, the another kind of version that it is characterized in that " syn overload clutch mechanism " in " the automatic open-and-close mechanism of half-nut " of " F nut " is by sliding sleeve 28, lead key 23, spring 29, steel ball 30, lifting cover 3A and several slight drag grooves 3A.13 form, steel ball 30 and spring 29 are contained in the radial hole of sliding sleeve 28, steel ball 30 matches with resistance groove or hole 3A.13, sliding sleeve 28 links by lead key 23 and screw rod, screw rod 4 is provided with axial keyway 4.1 and matches with lead key 23, and steel ball 30 can replace with the garden guide pillar;

18 as any one the described rapid rising jack in the claim 1～11, the structure that it is characterized in that fast " selector gear " at a slow speed in " the half-nut syn open-and-close mechanism " of " F nut " is to adopt latch locking mechanism 5: by latch 5.1, plug housing 5.3, pivot pin 5.4 and eccentric handle 5.5 are formed, latch 5.1 front ends be garden cylinder plug point 5.1.1 it can insert among the lock hole 3A.8 on the lifting cover 3A, whether 5.1.1 inserts among the lock hole 3A.8 about the latch point, or from lock hole 3A.8, transfer to, as long as the direction of arrow of control operation eccentric handle 5.5 is vertical (or levels).Its plug housing 5 is installed on the supporting base 1A;

19. as any one the described rapid rising jack in the claim 1～11, the another kind of version that it is characterized in that " selector gear " soon at a slow speed in " the half-nut syn open-and-close mechanism " of " F nut " be adopt pawl type bolt mechanism 5 ', its structure is basic the same with bolt-type lockout mechanism 5, only be to replace garden cylinder plug 5.1 with ratchet 7, so just the latch point 5.1.1 of former garden cylinder plug 5.1 is changed into the pawl type latch point 5 ' .1.1 of Type of Double-Cone, or change the pawl type latch point of single conical surface type into, be that the detent pin point has only on one side be inclined-plane and another side is the right angle face, they can be inserted in the keyway 4.1 of screw rod 4 under the manipulation of eccentric handle 5 ' .5 and control, perhaps from keyway 4.1, transfer to, its plug housing 5 ' .2 is fixed on the lifting cover 3A, for handled easily can make the eccentric handle 5 ' .5 of chip arrowhead form into two V shape eccentric handle 36, it matches with the termination of ratchet 30, for mounting spring 6 is correspondingly overlapped the sub-3A.10 of grooving on the 3A in lifting, grooving 30.3 on ratchet 30, equally, as long as the orientation of operating handle 36 such as horizontal or vertical), then can make the claw 30.2 of ratchet from the keyway 4.1 of screw rod 4, transfer to or put into keyway 4.1.

20. a kind of rapid rising jack as claimed in claim 1 is characterized in that: the outer garden of the left part of screw rod 4 is provided with a left side or right-hand screw thread, and is located at left hinge axis O ₂On " F nut " in corresponding half screw rod match, and the outer garden of the right part of screw rod 4 is provided with the right side or minus thread, and is located at right hinge O ₁On " F nut " in corresponding half-nut match, the driving device of its rotating screw bolt 4 can be located at arbitrary end of screw rod in addition.