CN109160445A - A kind of stilt formula elevating device - Google Patents

Abstract

In the stilt formula elevating device of the application, left foot, the right crus of diaphragm of user alternately gradually promotes lifting device Z, Y and completes operation of ascending a height, professional skill is not needed, safe and reliable, lifting device Z, Y are using X-shaped scissor component as elevating mechanism, it occupies little space in folded state lifting device, for lifting device using manpower as the power promoted, clever structure is light-weight.

Description

A kind of stilt formula elevating device

Technical field

The present invention relates to mechanical device field of ascending a height, especially a kind of stilt formula elevating device.

Background technique

Usually eminence is needed to take object in life and production, such as picks hydropower installation, house decoraton, cleaned with wall body door or window, Fruit-picking and pendulum takes commodity etc. to ascend a height operation on shelf, usually we are using ladder, lifting platform as tool help people Reach eminence.

Traditional ladder will often select long ladder or short ladder according to the height of setting when in use, what is unconditionally selected In the case of, the normal handy long ladder of work present in short, long ladder is not only heavy, and too long ladder bars interfere user's operation and safety. Ladder is too short, does not reach working face, is unable to complete the awkward situation of operation.Low change height when high when being required during operation, People must climb up and climb down.If all around to change operating position, it must swash from ladder, carry on one's shoulders or with both hands after moving ladder Climbing up again again can just work on.Need not consuming for user's physical strength is caused, is dallied over one's work the time, operating efficiency is reduced.Ladder The mobile difficulty of son, lifting platform, ladder or lifting platform with locomotive function are needed by the outer of other staff or driving mechanism Power could be completed to move.

Stilt are that two legs of professional fix a root long bar respectively, and as leg extension, professional can using stilt With walking, it has been found that stilt, which are that one kind is transportable, not to be needed to want environment compared to ladder stilt by external force tool Ask low, but stilt need just to can be used by long-term training, higher-height upper stilt and lower stilt can be by other people Member's auxiliary or aloft upper and lower stilt of standing.

Referring to Figure 1, the Chinese utility model patent of notification number CN201981993U discloses a kind of stilt formula and can increase Drop step moves ladder, is made of two mutual disjunct ladder bars.The support rod of supporter is sleeved on group in the lifting bore of lifting body At ladder bars.Supporter includes support rod and stabilizer, and stabilizer is made of steadying plate and stable pin.Lifting pipe with by manipulator Handle, connecting rod, spring, control box, idler wheel, elastic slice, the lift control system of removable pin synthesis and foot pedal and cingulum constitute lifting Body.

Fig. 2 is referred to, publication No. discloses a kind of scissor lift platform for the Chinese invention patent of CN104627899Z, including Pedestal 100, elevating mechanism 200, lift drive mechanism 300, load carrier 400 and pressure sensor 500.Pedestal 100 is located at institute The scissor lift platform bottom is stated, there are 4 mounting holes 101 thereon convenient for connecting with bottom surface or other equipment.Elevating mechanism 200 is Identical and be parallel to each other by two sets, the multilayer for being correspondingly arranged at 100 two sides of pedestal is in the elevator component groups of X-shaped At the elevator component of same layer is made of two hinged connecting rods 201 for making it have revolute pair in middle part, adjacent two layers Elevator component is hinged by the linkwork that 201 both ends of connecting rod are arranged in, and one in bottom elevator component One end of connecting rod 201 and pedestal 100 are hinged.Lift drive mechanism 300 is set on the pedestal, two sets of Multilayer lifts Among component.

In the prior art, stilt type adjustable lifting walking ladder user needs that balance could be grasped by long-term training and completes Lifting, while occupied space is big.

The shortcomings that scissor lift platform is: weight is big, price is high, needs electricity consumption, moving range small.

Summary of the invention

It is an object of that present invention to provide a kind of stilt formula elevating device, can complete independently operation, be easily mastered balance, without outside Portion's power, the relatively small stilt formula elevating device of occupied space.

In order to achieve the above-mentioned advantages, a kind of stilt formula elevating device provided by the invention, comprising: a pair of of lifting device (Z, Y), the liter Falling unit (Z, Y) includes elevating mechanism, unidirectional lifting mechanism, clutch；

The elevating mechanism includes that platform and multilayer are provided with an X-shaped scissor component, which includes a pair of of middle part hinge The connecting rod of the connecting rod connect, adjacent two layers scissor component is hinged, which has the first tie point and the second tie point, The spacing of first tie point and the second tie point is increased with the elevating mechanism and is decreased or increased；

The unidirectional lifting mechanism includes: screw rod equipped with spiral shape guide part, is set in outside the screw rod and mutually The second ratchet sleeve and the first ratchet sleeve of engagement possess the elastic portion or magnetic for keeping second ratchet sleeve and the engagement of the first ratchet sleeve Property portion, first ratchet sleeve and first tie point be rotatablely connected axial restraint, one and described second in the screw rod Connect it is point articulated, second ratchet sleeve be equipped with for and guide part cooperation drive the auxiliary section of screw rod rotation, should When limiting rotation status, second ratchet sleeve can only be increased with the elevating mechanism to be rotated screw rod along direction A, this first Ratchet sleeve is for preventing second ratchet sleeve from rotating along the direction opposite with direction A；

The clutch is used to switch the permission rotation status and limitation rotation status of the screw rod.

Preferably, a small end in scissor component described in top layer and the platform are hinged, on another connecting rod End is slidably matched with the platform.

Preferably, first tie point and second tie point are located at the elevating mechanism upper end.

Preferably, the elevating mechanism includes that a pair of of left and right multilayer disposed in parallel is provided with an X-shaped scissor component.

Preferably, left and right scissor component disposed in parallel by it is multiple from left side scissor component extend to right side cut The articulated shaft for pitching component is hinged.

Preferably, first ratchet sleeve is fixed with external disk, and the clutch includes: the friction by the external disk Portion, for keeping the friction portion to squeeze the first elastic holders of the external disk, for driving the friction portion to separate with the external disk Parking brake.

Preferably, the screw rod and the platform parallel, the friction portion is slidably matched with platform.

Preferably, the spiral shape guide part is spiral groove or protrusion.

Preferably, the scissor component of the elevating mechanism, the platform are made of aluminium alloy or carbon fibre material.

Preferably, the platform is equipped with the fixing belt for fixed feet.

In the stilt formula elevating device of the application, left foot, the right crus of diaphragm of user alternately can gradually promote lifting device Z, Y Completion is ascended a height operation, and professional skill is not needed, safe and reliable, and lifting device Z, Y are using X-shaped scissor component as elevator Structure occupies little space in folded state lifting device, and lifting device is using manpower as the power promoted, clever structure, weight Gently.

Detailed description of the invention

Fig. 1 show a kind of structural schematic diagram of existing aerial device.

Fig. 2 show the structural schematic diagram of the stilt formula elevating device of first embodiment of the invention.

Fig. 3 show the structural schematic diagram of the lifting device of the stilt formula elevating device of Fig. 2.

Fig. 4 show the position of the first tie point of the stilt formula elevating device of other embodiments of the invention, the second tie point Schematic diagram.

Fig. 5 show the structural schematic diagram of the platform of Fig. 2.

Fig. 6 show the structural schematic diagram of the unidirectional lifting mechanism in part of Fig. 2.

Fig. 7 show the structural schematic diagram of the clutch of Fig. 2.

Fig. 8 show the structural schematic diagram of the handle of Fig. 2.

Fig. 9 show the structural schematic diagram of the swing arm of the reduction of speed limiting mechanism of Fig. 2.

Figure 10 show the schematic diagram of the reduction of speed limiting mechanism of the lifting device of Fig. 9.

Figure 11 show the structural schematic diagram of the height holding mechanism of Fig. 2.

Figure 12 show the structural schematic diagram of the stilt formula elevating device of second embodiment of the invention.

Figure 13 show the structural schematic diagram of the lifting device of the stilt formula elevating device of Figure 12.

Figure 14 show the structural schematic diagram of the platform of Figure 12.

Figure 15 show the structural schematic diagram of the clutch of Figure 12.

Figure 16 show the structural schematic diagram of the handle of Figure 12.

Specific embodiment

It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with Attached drawing and preferred embodiment, to specific embodiment, structure, feature and its effect is proposed according to the present invention, detailed description is as follows.

Refer to Fig. 2, the stilt formula elevating device of first embodiment of the invention, comprising: a pair of and user's left foot, right crus of diaphragm pair The lifting device Z, Y answered.

Fig. 2-11, lifting device Z, Y are referred to, elevating mechanism 1, unidirectional lifting mechanism 3, clutch 4, reduction of speed are respectively included Limiting mechanism 5, height holding mechanism 6, handle 7.

Scissor component 10, the platform 2 of elevating mechanism 1 are made of aluminium alloy or carbon fibre material.Unidirectional lifting mechanism 3 and from Clutch 4 is located between two sets of parallel scissor components 10.

Fig. 2, Fig. 3 are referred to, elevating mechanism 1 is provided with an X-shaped scissor component 10 including platform 2, multilayer, the scissor component 10 include the hinged connecting rod 101,102 in a pair of of middle part, and the connecting rod 101,102 of adjacent two layers scissor component is hinged.The lifting Mechanism has the first tie point and the second tie point, and the spacing of first tie point and the second tie point is increased with the elevating mechanism And it reduces.

It is specific: elevating mechanism 1 be it is identical and be parallel to each other by two sets, be correspondingly arranged at the multilayer of 2 two sides of platform It is formed in the scissor component 10 of X-shaped.Left and right scissor component disposed in parallel extends to right side from left side scissor component by multiple The articulated shaft 103 of scissor component is hinged.First tie point and the second tie point are located on two sides articulated shaft 103.Same layer Scissor component 10 be made of two hinged connecting rods 101,102 for making it have revolute pair in middle part.Adjacent two layers scissor Component 10 is hinged, and one end of the connecting rod 101 in top layer's scissor component 10 is hinged by articulated shaft 103 and platform 2, connecting rod 102 ends pass through articulated shaft 103 and 2 slidable connection of platform.

Fig. 4 is referred to, in other embodiments of the invention, the spacing of first tie point and the second tie point is with the liter Descending mechanism increases and increases.First tie point and the second tie point are adjacent upper and lower level point, such as: D1 and D2, D2 and D3, D3 and D4, D1 and D8 etc..Be also possible to the point of interlayer, such as: D1 and D3, D1 and D4, D1 and D10, D1 and D12, D1 and D15, D1 and D22 etc..It is also possible to the first tie point to be located on platform, the second tie point is located at the middle part of connecting rod.

Fig. 5 is referred to, platform 2 is equipped with and the corresponding sliding slot 20 of articulated shaft 103, and articulated shaft 103 and the cooperation of sliding slot 20 can make The upper end of connecting rod 101 rises or falls platform 2 close to or far from the upper end of another connecting rod 102.Platform 2 is fixed with for solid Determine the fixing belt 21 of foot.Platform 2 has and the corresponding attachment base 23 of screw rod 31, swing arm mounting base 25 corresponding with swing arm.

Refer to Fig. 5, Fig. 6, Figure 11, unidirectional lifting mechanism 3 includes: screw rod 31 equipped with spiral shape guide part, is arranged In the screw rod 31 outer and intermeshing second ratchet sleeve 32, the first ratchet sleeve 33, possess and keep the second ratchet sleeve 32 and the The elastic portion 3t of one ratchet sleeve 33 engagement.In other embodiments of the invention, the second ratchet sleeve 32 and the first ratchet sleeve are kept 33 engagements may be magnetic portion 3t.

First ratchet sleeve 33 and the first tie point are rotatablely connected axial restraint, and screw rod 31 connect point articulated with second.It should Second ratchet sleeve 32 is equipped with the auxiliary section 34 for driving the screw rod 31 to rotate with guide part cooperation.In screw rod 31 When by limitation rotation status, which can only increase with the elevating mechanism rotates along direction A.First ratchet sleeve 33 for preventing second ratchet sleeve 32 from rotating along the direction opposite with direction A.

Fig. 7, Fig. 8 are referred to, clutch 4 is used to switch the permission rotation status of the screw rod 31 and limits contorted State.Clutch 4 includes: the external disk 40 being connected and fixed with screw rod 31, the friction portion 41 by external disk 40, for the portion of rubbing 41 The fixed block 42 for being located at 41 front-end and back-end of friction portion that is connected and fixed with platform 2, the first elastic holders 43, parking brake 44, first brake line 45, the first brake thread casing 46 covered outside first brake line 45.

Friction portion 41 has the first guide rod 411, the limiting section 412 being set in outside guide rod.Fixed block 42 is equipped with guiding Hole 421.Friction portion 41 can be slided along 421 axis direction of pilot hole.First elastic holders 43 are to be set in outside guide rod 411 Spring.Spring is between limiting section 412 and rear end fixed block 42.First elastic holders 43 for keep friction portion 41 with To limit the rotation of screw rod 31, parking brake 44 is used to pull the first guide rod 411 by first brake line 45 pressure between external disk 40 To change the frictional force between the adjustment friction portion 41 of the pressure between friction portion 41 and external disk 40 and external disk 40 with the decline of control platform 2 Speed.

In other embodiments of the invention, friction portion 41 is symmetricly set on the two of platform 2 with the central axis of external disk 40 Side.First brake line 45 is Y-shaped, and the end of bifurcated is separately connected the first guide rod 411 of two sides.

Parking brake 44 is identical with principle with the rim brake structure of bicycle.Parking brake 44 includes the rim brake seat being fixed on handle 7 441 and rim brake handle 442, first brake thread casing 46 is between rim brake seat 441 and platform 2,442 middle part of rim brake handle and rim brake seat 441 is hinged, and the end of rim brake handle 442 is connect with first brake line 45.

Fig. 5, Fig. 9, Figure 10 are referred to, reduction of speed limiting mechanism 5 includes: the annular groove 51 being provided in external disk 40 and platform 2 Hinged swing arm 52, the second elastic holders 53.The inside side walls 511 of annular groove 51 have the extension backwards to screw rod 31 The outside side wall 512 of raised 511a, annular groove 51 have locking notch 512b；Swing arm 52 has the end being contained in annular groove 51 Column 521, newel post 521 are bonded with the inside side walls 511 of annular groove 51；Raised 511a is used for will when 2 decrease speed of platform is too fast Newel post 521 squeezes into locking notch 512b, to limit the rotation of external disk 40.Second elastic holders 53 are torsional spring, and the second elasticity is protected Portion 53 is held for keeping newel post 521 to contact with the inside side walls 511 of annular groove 51.The opening direction of locking notch 512b and outer Disk 40 rotates contrary in the decline of platform 2.It can be not provided with the second elastic holders, swing arm in other embodiments Can be hinged with platform in place, swing arm is bonded newel post with inside side walls 511 using gravity.

Fig. 3, Fig. 6, Fig. 8, Figure 11 are referred to, height holding mechanism 6 includes: that the gag lever post 61, second that section is L shape is stopped Fare 62, parking brake 63, the second brake thread casing 64, third elastic portion 65 being set in outside the second brake cable 62.First ratchet sleeve 33 are equipped with the slide opening 330 for allowing gag lever post 61 to slide along 31 axis direction of screw rod.Gag lever post 61 is equipped with 611 He of position limiting convex ring For preventing gag lever post 61 to be detached from card and the portion 612 of slide opening 330.Third elastic portion 65 is located at position limiting convex ring 611 and the second ratchet Between set 32.Second ratchet sleeve 32 is equipped with limited step 320.The step face contact time limit system of gag lever post 61 and limited step 320 First ratchet sleeve 33 is rotated to keep the height of lifting device not increase again.Preferably, third elastic portion 65 is to be set in limit Spring outside the bar 61 of position.

Parking brake 63 includes that the parking brake seat 631 being fixed on handle 7, brake handle 632 and the hinged holding of handle 7 buckle 633. Brake handle 632 has and can be located at 631 peace of parking brake seat with the hook shaped ends of 633 cooperation of holding button, the second brake thread casing 64 Between platform 2,632 middle part of brake handle is hinged with parking brake seat 631, and the end of brake handle 632 is connect with the second brake cable 62, keeps button 633 for by keeping the position of brake handle 632 to keep gag lever post 61 against step surface.

After lifting device rising, the weight of human body can make that certain friction can be generated between reduction of speed limiting mechanism and platform Power, balanced a part of weight of human body, mitigates the frictional force needed between clutch 4 and external disk.

The stilt formula elevating device of the present embodiment, application method is as follows, and but not limited to this:

Left foot, the right crus of diaphragm of user passes through fixing belt 21 respectively and connect with lifting device Z, Y.

The connection for releasing the holding button 633 and brake handle 632 of lifting device Z, Y, limits under the action of third elastic portion Bar 61 is separated with limited step 320；Threaded rod 31 is by limitation rotation status；

User first lifts left foot with right crus of diaphragm support, under the action of unidirectional lifting mechanism 3, increases lifting device Z；

User adjusts center of gravity, lifts right crus of diaphragm with left foot support, increases lifting device Y；

Alternating lifts left foot, right crus of diaphragm makes lifting device Z, Y rise to suitable height, operates the brake handle of lifting device Z, Y 632 and using keep button 633 keep brake handles 632 positions, lock lifting device Z, Y height；At this moment two legs of user Standing respectively can walk on lifting device Z, Y as " stilt walk ".

When decline, user's manipulator's sneek makes the pressure between friction portion 41 and external disk 40 reduce control screw rod 31 and revolves Rotary speed slowly declines；When dropping excessive velocities instantly, raised 511a squeezes into newel post 521 in locking notch 512b, limits external disk 40 rotations, at this moment if necessary to release mutual limitation of the locking notch 512b to newel post 521, needing to lift platform makes newel post 521 With the separation of locking notch 512b, newel post 521 is bonded with inside side walls under the action of the second elastic portion；

When lifting device Z, Y are shunk completely, user operates the brake handle 632 of lifting device Z, Y and using holding button 633 keep the position of brake handle 632, lock the height of lifting device Z, Y.

2-16 referring to Figure 1, the stilt formula elevating device of second embodiment of the invention, clutch 8 include: brake lever 81, Third brake cable 82, parking brake 83, the third brake being set in outside third brake cable 82 and are arranged thread casing 84, the 4th elastic portion 85 In the gear 86 that screw rod 31 is outer and screw rod 31 is connected and fixed.

4, Figure 15 referring to Figure 1, brake lever 81 are located at the lower section of gear 86.One end of brake lever 81 is equipped with cuts with scissors with platform 2 The articulated section 811 connect, the other end have the interconnecting piece 812 connecting with third brake cable 82.Platform 2 offers permission interconnecting piece 812 windows 26 that passes through and can move up.4th elastic portion 85 separates shape for keeping brake lever 81 to be in gear 86 State.Parking brake 83 is used to limit by pulling interconnecting piece 812 that brake lever 81 is made to squeeze gear 86 after the center rotating of articulated section The rotation of gear 86 is to limit the rotation of screw rod 31.Preferred brake lever 81 has and gear 86 towards the surface of gear 86 The teeth 813 of engagement.4th elastic portion 85 is the spring being arranged between 812 upper surface of platform 2 and interconnecting piece.

Referring to Figure 16, parking brake 83 includes the parking brake seat 831 being fixed on handle 7, brake handle 832, hinged with handle 7 Holding button 833.Brake handle 832 has and can be located at hand with the hook shaped ends of 833 cooperation of holding button, third brake thread casing 84 Between brake seat 831 and platform 2,832 middle part of brake handle and parking brake seat 831 are hinged, the end of brake handle 832 and third brake cable 82 Connection keeps button 833 for the position of brake handle 832 to keep teeth 813 and gear 86 is meshing state by keeping.

In the present embodiment, the position for keeping button 833 to keep brake handle 832,813 He of teeth are used when lifting device rises The engagement limitation screw rod 31 of gear 86 rotates.It when lifting device declines, releases and keeps button 833 and the connection of brake handle 832, the Separate brake lever 81 with gear 86.

In the stilt formula elevating device of the application, left foot, the right crus of diaphragm of user alternately can gradually promote lifting device Z, Y Completion is ascended a height operation, and professional skill is not needed, safe and reliable, and lifting device Z, Y are using X-shaped scissor component as elevator Structure occupies little space in folded state lifting device, and lifting device is using manpower as the power promoted, clever structure, weight Gently.

The following are the related data calculation formulas of the present invention:

△ Hmax=(n*L*sin α max-w)

M=F*r*tan β

K=M/ (μ * R)

△ H is the number of plies that lifting height is poor, n is scissor component, and L is connecting rod shaft axis spacing up and down, and α is connecting rod and water Plane included angle, w are link width, and N is plateau pressure, and F is lead screw cross force, and h is difference in height between shaft axis, M is spiral Bar torque, r are screw rod radius, and β is screw rod helical angle, and K is friction plate pressure, and μ is coefficient of friction, and R is friction portion and spiral shell Spinner handle axial line distance L takes 0.26m, n that 6, α max is taken to take 60 degree, and w takes 0.02m, N that 1KN, h is taken to take 0.07m (each total Uplifting amount Every layer of rising 5cm of 30cm adds link width 2cm), β takes 30 degree, and μ takes 0.4 (referring to automotive friction coefficient 0.35~0.45), R 0.06m is taken for friction portion and screw rod axial line distance.

Obtain: △ Hmax is 1.23m, F 1.79KN, M 1.52N*m, K 72.42N.The higher F of lifting height is smaller, Therefore the cross force of first time lifting platform rear screw bar is maximum, and when due to first time lifting platform, the height of platform is relatively low, Even if it is also very safe for therefore skidding.

Applicant's earlier application stilt formula elevating device (application number: 2018105080138,2018105088981, 2018105093123、2018105093142、201810509327X、 2018207823234、2018207832708、 2018207833217,2018207837383) friction plate pressure needs hundreds of oxen.

More than, it is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, although this Invention has been disclosed in a preferred embodiment above, and however, it is not intended to limit the invention, any person skilled in the art, It does not depart within the scope of technical solution of the present invention, when the technology contents using the disclosure above make a little change or are modified to equivalent The equivalent embodiment of variation, but without departing from the technical solutions of the present invention, according to the technical essence of the invention to the above reality Any simple modification, equivalent variations and modification made by example are applied, all of which are still within the scope of the technical scheme of the invention.

Claims (10)

1. a kind of stilt formula elevating device characterized by comprising a pair of of lifting device (Z, Y), the lifting device (Z, Y) include Elevating mechanism, unidirectional lifting mechanism, clutch；

The elevating mechanism includes that platform and multilayer are provided with an X-shaped scissor component, which includes hinged in the middle part of a pair The connecting rod of connecting rod, adjacent two layers scissor component is hinged, which has the first tie point and the second tie point, this The spacing of one tie point and the second tie point is increased with the elevating mechanism and is decreased or increased；

The unidirectional lifting mechanism includes: screw rod equipped with spiral shape guide part, is set in outside the screw rod and is intermeshed The second ratchet sleeve and the first ratchet sleeve, possess keep second ratchet sleeve and the first ratchet sleeve engagement elastic portion or magnetism Portion, first ratchet sleeve and first tie point are rotatablely connected axial restraint, and one in the screw rod connects with described second Contact is hinged, which is equipped with the auxiliary section for driving the screw rod rotation with guide part cooperation, the spiral shell When limiting rotation status, second ratchet sleeve can only be increased with the elevating mechanism to be rotated spinner handle along direction A, first spine Wheel case is for preventing second ratchet sleeve from rotating along the direction opposite with direction A；

The clutch is used to switch the permission rotation status and limitation rotation status of the screw rod.

The lifting device (Z, Y) further includes reduction of speed limiting mechanism, which includes: the annular for being fixed on external disk Slot, swing arm；The inside side walls of the annular groove have the protrusion to extend outwardly, and the outside side wall of annular groove has locking notch； Swing arm has the newel post accommodated in a ring groove, and newel post is bonded with the inside side walls of annular groove, and protrusion is for the reduction of speed under platform Newel post is squeezed into locking notch when spending fast, to limit external disk rotation.

2. stilt formula elevating device according to claim 1, which is characterized in that a company in scissor component described in top layer Bar upper end and the platform are hinged, another small end is slidably matched with the platform.

3. stilt formula elevating device according to claim 1, which is characterized in that first tie point and second connection Point is located at the elevating mechanism upper end.

4. stilt formula elevating device according to claim 1, which is characterized in that the elevating mechanism includes that a pair of of left and right is parallel The multilayer of setting is provided with an X-shaped scissor component.

5. stilt formula elevating device according to claim 1, which is characterized in that the left and right scissor component disposed in parallel It is hinged by multiple articulated shafts for extending to right side scissor component from left side scissor component.

6. stilt formula elevating device according to claim 1, which is characterized in that first ratchet sleeve is fixed with external disk, institute Clutch is stated to include: friction portion by the external disk, elastically keep for keeping the friction portion to squeeze the first of the external disk Portion, the parking brake for driving the friction portion to separate with the external disk.

7. stilt formula elevating device according to claim 6, which is characterized in that the screw rod and the platform parallel, institute Friction portion is stated to be slidably matched with platform.

8. stilt formula elevating device according to claim 1, which is characterized in that the spiral shape guide part is spiral recessed Slot or protrusion.

9. stilt formula elevating device according to claim 1, which is characterized in that the scissor component of the elevating mechanism, described Platform is made of aluminium alloy or carbon fibre material.

10. stilt formula elevating device according to claim 1, which is characterized in that the platform is equipped with consolidating for fixed feet Determine band.