CN107337140B - A kind of electric adjustable jack - Google Patents
A kind of electric adjustable jack Download PDFInfo
- Publication number
- CN107337140B CN107337140B CN201710696793.9A CN201710696793A CN107337140B CN 107337140 B CN107337140 B CN 107337140B CN 201710696793 A CN201710696793 A CN 201710696793A CN 107337140 B CN107337140 B CN 107337140B
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- trailing arm
- motor
- component
- nut
- auxiliary
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/44—Devices, e.g. jacks, adapted for uninterrupted lifting of loads with self-contained electric driving motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/08—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated
- B66F3/12—Devices, e.g. jacks, adapted for uninterrupted lifting of loads screw operated comprising toggle levers
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Invalid Beds And Related Equipment (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The present invention provides a kind of electric adjustable jack, including top component, lift component, power transmitting assembly and base assembly, and automatic card lock component is located at and lifts in component.Component is lifted compared with traditional scissor-like jack straight-bar shape, it is this to lift component when jacking same object to identical height with bending posture, the torque of required motor output is smaller, and it can will lift component according to the demand of application environment to adjust to ideal pose, reduce the requirement of jack pair motor output torque, the jacking ability of jack can be temporarily improved, so that jack be made to adapt to narrower working environment, while having expanded the jacking range of jack significantly.
Description
Technical field
The present invention relates to a kind of adjustable lifting jacks, belong to hoisting apparatus field.
Background technique
In the prior art, it is widely used in jacking, the hoisting apparatus of adjustment equipment is Dynamoelectric scissor jack.Traditional electricity
Dynamic scissor-like jack is generally formed by lifting the lower trailing arm of arm, a pair, pedestal and power transmitting assembly in top, a pair, wherein power
Transmission assembly mainly includes motor, motor mounting plate and lead screw, and upper act arm and lower trailing arm are designed to straight-bar shape；It is a pair of
Upper act arm is connected with the lower trailing arm of a pair by forward and backward pin shaft, and the upper joint for lifting arm is equipped with top component, the joint of lower trailing arm
Place is equipped with pedestal, and lead screw passes through forward and backward pin shaft, is threadedly coupled between the preceding pin shaft and lead screw at the place of passing through, and the rear end of lead screw connects
Connect the output shaft of motor.Lead screw rotation is driven by motor when use, the lead screw of rotation will drive forward and backward pin shaft in the axis of lead screw
It is axially moved on direction, it is so then upper to lift arm and lower trailing arm under the action of preceding pin shaft around forward and backward pin shaft in the wrong, with realization pair
The lifting of object.This method has the following problems: since the upper act arm of traditional scissor-like jack and lower trailing arm are designed to admittedly
Fixed straight-bar shape, under the premise of upper act arm and lower trailing arm do not break, the jacking ability of scissor-like jack depends on jack
Upper motor can be provided to the torque of lead screw, in the application process of scissor-like jack, when needing to jack big mass objects
When, just require motor to provide more torques to increase top lift, but since the torque range that motor can be provided all is fixed
, torque required for jack often can be beyond the peak torque that motor can be provided, so as to cause on jack at this time
Motor is not able to satisfy jacking needs, and due to safety concerns, staff generally requires in addition to purchase new jack, to cause
Waste economically；When jack is in narrow working environment, needs to jack weight from short position, compared with general
Situation, jack require motor to export more torques to increase top lift.Traditional scissor-like jack, since it is from translator
The torque limit that can be provided tends not to meet jacking demand, this is greatly lowered the jacking range of jack, makes very heavy
Top does not adapt to narrow working environment；Traditional scissor-like jack is only equipped with a feed screw nut, in scissor-like jack
The course of work in, the upper act arm of jack and lower trailing arm generate lateral thrust, silk to feed screw nut and motor mounting plate simultaneously
Cross force is passed to lead screw by the axial movement of thick stick nut, and since the position of motor mounting plate and screw rod is fixed, motor is installed at this time
Plate also by the lateral pull of lead screw, make jointly by the thrust that the lateral pull from lead screw passes to motor mounting plate with weight
With greatly increasing the frictional force of joint, this results in jack to need additional torque gram when jack weight
Frictional force is taken, thus it requires motor exports more torques.
Chinese patent CN200610050473.8 discloses a kind of novel scissor jack of structure optimization, including two left sides
The right side is symmetrical with lifting component, promoting platform, pedestal, drive screw and decelerating motor, drive screw and decelerating motor for center line
Output axis connection, the upper upper end for lifting arm is hinged with act auxiliary, and the lower end of lower trailing arm is hinged with lower act auxiliary, upper acts auxiliary and
Angle between drive screw is greater than the angle between upper act arm and drive screw, the lower angle lifted between auxiliary and drive screw
Greater than the angle between lower trailing arm and drive screw.Upper act arm is equipped with the upper rotary position-limit mechanism for lifting auxiliary, sets on lower trailing arm
There is the lower rotary position-limit mechanism for lifting auxiliary.Compared to traditional Dynamoelectric scissor jack, auxiliary, lower act auxiliary and transmission are lifted thereon
It can produce the biggish angle of angle between screw rod, increase the arm of force in top lifting stage, so that being applied to transmission spiral shell in the top lifting stage
Torque on bar does not need very greatly, and decelerating motor can be made smaller, so that the weight and volume of entire jack
It greatly reduces.This structure increases relative to traditional jack performance, and but there are the following problems: in upper act auxiliary, lower act
It is upper to lift auxiliary and the upper angle lifted between arm, between lower trailing arm and lower act auxiliary after auxiliary is limited by respective rotary position-limit mechanism
Degree is locked, and is entirely lifted component and is fixed, the torque required for jack still exceeds the torque model that motor can be provided
When enclosing, reduction by thousand can not be continued by lifting the angle between arm and upper act auxiliary, between lower trailing arm and lower act auxiliary on adjusting
The torque demand on jin top, to limit the further promotion of jack jacking ability；The invention is only equipped with a lead screw spiral shell
Mother when work, generates friction, it is desirable that motor exports more torques to overcome frictional force between motor mounting plate and lead screw.
Summary of the invention
The purpose of the present invention is in response to the deficiencies in the existing technology, provide a kind of adjustable lifting jack.
The present invention is achieved through the following technical solutions above-mentioned technical purpose.
A kind of electric adjustable jack includes top plate, lifts component, automatic card lock component, power transmitting assembly and pedestal
Plate, every group is lifted the movement branched chain that component includes two axial symmetry arrangement, and the movement branched chain includes upper act auxiliary and upper trailing arm,
The upper end for lifting auxiliary is arranged in the top plate, and the movement branched chain further includes lower act auxiliary and lower trailing arm, the pedestal
The lower end for lifting auxiliary is arranged in plate, and upper trailing arm and lower trailing arm are rotatablely connected, and the power transmitting assembly is set to the pop-up
The link position of arm and lower trailing arm, which is characterized in that the component of lifting is set to off in roof symmetric arrangement, and two groups of supports
It is identical to lift modular construction；The upper act auxiliary is connect with upper trailing arm by the automatic card lock component, and the lower act auxiliary is under
Trailing arm is connected by automatic card lock component, and the automatic card lock component has opening and locking state, at automatic card lock component
When opening state, the angle of coupled two-arm can be adjusted, coupled when automatic card lock component is in locking state
The angle of two-arm is fixed.
Further, one end that upper act auxiliary is connect with top plate is provided with gear face, the upper act auxiliary and upper trailing arm
One end of connection is equipped with recess portion, and one end that the lower act auxiliary is connect with base plate is provided with gear face, the lower act auxiliary
The one end connecting with lower trailing arm is equipped with recess portion, and upper lift in auxiliary and the lower recess portion for lifting auxiliary is further provided with pinion stand installation
Portion.
Further, one end that the upper trailing arm is connect with upper act auxiliary is equipped with recess portion, the lower trailing arm and lower act auxiliary
One end of connection is equipped with recess portion, is equipped with internal tooth wheel face in the upper trailing arm and the recess portion of lower trailing arm.
Further, the upper act auxiliary is identical as the lower act structure of auxiliary, the structure phase of the upper trailing arm and lower trailing arm
Together.
Further, the automatic card lock component includes transmission gear, pinion stand and articulated shaft, the fixed peace of the pinion stand
In pinion stand mounting portion, the pinion stand is provided with the tooth form flank of tooth along the direction of inward-facing face of gear；The transmission gear
The outer flank of tooth engaged with internal tooth wheel face, the transmission gear is equipped with the tooth form flank of tooth along the direction towards pinion stand mounting portion, described
Pinion stand is connect with transmission gear by tooth form flank engagement；The articulated shaft passes through the center installation of transmission gear, pinion stand
Hole, and the step surface of the articulated shaft is abutted with transmission gear, when articulated shaft is translated by axial force towards internal tooth wheel face
When, articulated shaft can push the transmission gear to separate with pinion stand, can adjust the connected two-arm of automatic card lock component at this time
Angle.
Further, the automatic card lock component further includes elastic component, and the elastic component abuts the end face of transmission gear, institute
The elastic force for stating elastic component is contrary with axial force, and when articulated shaft is not by external force, elastic component keeps transmission
Gear is engaged with pinion stand.
Further, the automatic card lock component further includes installation end cap, and it is secondary that the installation end cap is fixedly mounted on act
Arm and the lower act auxiliary plane opposite with recess portion, installation end cover rim articulated shaft axially outward equipped with button mount, it is described to press
Button mounting portion is cylindrical boss, and the end face of the button mount is equipped with end cap.
Further, the automatic card lock component further includes button switch, and the button switch includes Metal snap, button
Spring and curved hook, the end outerplanar of the curved hook is fixedly connected with the Metal snap, in the end of the curved hook
Plane is equipped with protrusion, and the button spring is fixed in the protrusion of curved hook；The company that curved hook extends from end to coupler body
Extension bar is equipped with recessed, a recessed middle position for being set to end plane and coupler body；The end circumference of button mount
Face is equipped with Metal snap location hole, and the Metal snap protrudes from end cap periphery；The inner wall of button mount is further set
It is equipped with protrusion, the protrusion is abutted with the recessed cooperation of connecting rod, and the end of the articulated shaft towards installation end cap is provided with card
Slot, the card slot can engage with the coupler body of curved hook, and the coupler body is the curved surface coupler body to match with articulated shaft card slot；When hinged
When axis is acted on by axial force and the elastic force of elastic component is overcome to move axially, articulated shaft end is translated to button switch, until
The card slot of articulated shaft is clamped with curved hook and is fixed with the axial position for realizing articulated shaft；When removing axial force, metal is pressed
Button, the curved hook are opened and are disengaged with the card slot of articulated shaft, and the articulated shaft resets under the action of elastic component elastic force
Further, the power transmitting assembly includes motor, motor nut, end nut and lead screw, the motor spiral shell
Female link position that trailing arm Yu lower trailing arm are fixedly installed in end nut, the lead screw are provided with oppositely oriented screw thread
Section, the thread segment spiral connection of motor nut and end nut lead screw corresponding with its rotation direction respectively；With similar in motor nut
One end of lead screw is connected with motor, and when the motor is opened, motor driven lead screw rotation, the lead screw enables to motor spiral shell
It is female close to each other or separate with end nut, to realize rising or falling for top plate.
Further, upper trailing arm is rotatablely connected by pin shaft and lower trailing arm, is fixed with nut mounting base, institute on the pin shaft
It states motor nut and end nut is respectively and fixedly installed in nut mounting base, wherein the nut installation of motor nut is installed
Motor mounting plate is equipped on seat simultaneously, is fixedly connected with motor on the motor mounting plate.
Compared with prior art, the invention has the benefit that (1) reduces itself torque demand: compared with traditional scissors thousand
Jin top straight-bar shape lifts component, and this component of lifting with bending posture is jacked by same object to identical height
When, the torque of required motor output is smaller, to reduce the requirement of jack pair torque in certain jacking stroke；This hair
Bright lead screw used is the oppositely oriented lead screw in both ends, and the identical feed screw nut of rotation direction therewith is matched at lead screw both ends respectively；Work
When, feed screw nut is contrary with the axial force along lead screw that feed screw nut generates, and cancels out each other；And existing jack is then general
All over one feed screw nut of installation, the one end for being fitted without feed screw nut can then generate very big axial force and then bring very big rub
Power is wiped, this frictional force needs are overcome by the motor of more large torque.The present invention is then avoided to be produced along lead screw axial friction
Raw, to further reduce the torque demand of motor used in jack, at the same time, lead screw rotates a circle, then advances two
Lead improves the rate of climb of jack.
(2) jacking ability can be with flexible modulation: before jack work, due to upper act auxiliary of the invention and upper act arm it
Between, the lower angle lifted between auxiliary and lower trailing arm can according to need free adjusting, when the torque demand of jack still exceeds
When the torque range that motor can be provided, need to only utilize automatic card lock component, flexibly change on lift between auxiliary and upper act arm, under
The angle between auxiliary and lower trailing arm is lifted, i.e., flexibly changes the bending posture for lifting component entirety, can further decrease very heavy
The torque demand on top, and then the jacking ability of lifting jack；
(3) it adapts to narrow working environment: when scissor-like jack is in narrow working environment, needing object from short
When position jacking is got up, generally requires motor and provide more torques to increase top lift, traditional way is more to renew immediately
The stronger jack of jacking ability, and if staff need to will only lift component and adjust to ideal pose with the present invention,
The requirement for reducing jack pair motor output torque, can temporarily improve the jacking ability of jack, so that jack be made to adapt to
Narrower working environment, while the jacking range of jack has been expanded significantly.
Detailed description of the invention
Fig. 1 is right side structural representation of the invention；
Fig. 2 is left view structural representation of the invention；
Fig. 3 is structure cut-away illustration of the invention；
Fig. 4 is partial enlarged view of the invention；
Fig. 5 is automatic card lock component explosive view of the invention；
Fig. 6 is upper act auxiliary structural schematic diagram of the invention；
Fig. 7 is upper support arm structure schematic diagram of the invention；
Fig. 8 is the prior art related to the present invention；
Fig. 9 is the torque broken line schematic diagram that the present invention compares with the prior art.
The reference numerals are as follows:
1- comes directly towards component, 1.1- top plate, and 1.2- comes directly towards pin shaft, and 1.3- comes directly towards axle sleeve, and 2- lifts component, 2.1- movement branch
Chain, lifts auxiliary on 2.2-, the upper trailing arm of 2.3-, lifts auxiliary under 2.4-, trailing arm under 2.5-, 2.6- rotary shaft, 220- geared end,
221- recessed portion, 222- pinion stand mounting portion, 231- recessed portion, 232- internal tooth wheel face, 3- automatic card lock component, 3.6- driving cog
Wheel, 3.8- pinion stand, 3.9- articulated shaft, 330- protrusion, 331- is recessed, 350- button mount, 351- protrusion, 390- card slot,
4- power transmitting assembly, 4.1- motor, 4.2- motor mounting plate, 4.3- motor nut, 4.4- end nut, 4.5- lead screw,
430- motor nut mounting base, 440- end nut mounting base, 5.1- base plate, 5.2- base bearing pin, 5.3- pedestal axle sleeve.
Specific embodiment
The implementation and use of embodiment is discussed further below.It will be appreciated, however, that the specific embodiment discussed only shows
Illustrate to plasticity to implement and use ad hoc fashion of the invention, the range being not intended to limit the present invention.The all parts in description
The statement in the locations of structures such as directions such as upper and lower, top, bottom is not absolute, opposite.When in all parts such as figure
When shown arrangement, the statement of these directions is appropriate, but in figure when the position change of all parts, and the statement of these directions is also corresponding
Change.
As shown in Figs. 1-2, the adjustable Dynamoelectric scissor jack of a kind of carrying range, structure include: top component 1, support
Lift component 2, automatic card lock component 3, power transmitting assembly 4, base assembly 5.
As shown in Figure 1, top component 1 mainly includes top plate 1.1, top pin shaft 1.2 and top axle sleeve 1.3.Top plate 1.1 wraps
It includes and lifts roof panel and side wall, have two symmetrical circular holes in the two sidewalls for lifting roof panel.Two top pin shafts 1.2 are
Optical axis, axle portion are machined with snap clip slot by the position of two close end, and top axle sleeve 1.3 is a hollow cylinder.Pin shaft 1.2 is come directly towards to be inserted into
The two sidewalls of top plate 1.1 are passed through into the circular hole of 1.1 two sides of top plate.The groove for coming directly towards 1.2 both ends of pin shaft stretches out 1.1 side wall of top plate
Outside wall surface, four snaps be stuck in top 1.2 both ends of pin shaft snap clip slot on.Snap has elastic force, and diameter can expand
It opens up to adapt to the size of top pin shaft 1.2, is softened after the pin shaft 1.2 of snap insertion top, until fixed be fastened on top pin shaft
On 1.2 clip slot, snap replys original-shape, and the outer diameter of snap is greater than the aperture of circular hole so as to guarantee to come directly towards pin shaft 1.2
It will not be slipped from top plate 1.1.
Lifting component 2 is the link mechanism comprising movement branched chain, and two groups in the present invention are lifted component 2, and it is logical to lift component 2
It crosses top pin shaft 1.2 and top component 1 is rotatablely connected.Top axle sleeve is also socketed on the pin shaft 1.2 of top, top axle sleeve 1.3 will
Two groups symmetrically arranged to lift the length that component 2 separates, while coming directly towards axle sleeve 1.3 and is set as making to lift component 2 and be close to top plate 1.1
Side wall fix, thus when avoiding jack operation occur because of unnecessary vibration or displacement.
As shown in Fig. 1 or Fig. 2, lifts component 2 for every group and be made of the identical movement branched chain of two-strip structure, every movement branched chain
2.1 include upper act auxiliary 2.2, upper trailing arm 2.3, lower act auxiliary 2.4, lower trailing arm 2.5, wherein above lifts auxiliary 2.2 and lower act auxiliary
2.4 structures are identical, and upper trailing arm 2.3 is identical as the structure of lower trailing arm 2.5.As shown in Fig. 6-Fig. 7, upper act auxiliary 2.2 with can be rotated
Connection on trailing arm 2.3, upper trailing arm 2.3 is rotatablely connected with lower acts auxiliary 2.4, and trailing arm 2.5 is descended in the lower rotation connection of acts auxiliary 2.4,
The shape of trailing arm and auxiliary is flat long straight-bar.It is upper to lift the end that auxiliary 2.2 is connect with top plate as geared end 220, it lifts
Two movement branched chains of component 2 pass through the geared end 220 engagement connection, the upper end lifting auxiliary 2.2 and connecting with upper trailing arm 2.3
It is preferably shaped to semicircle, and the end is equipped with recessed portion 221.Upper trailing arm 2.3 is same as the end that upper act auxiliary 2.2 connects
Equipped with recessed portion 231, the end profiles are similarly preferably arc-shaped, the upper recessed portion 221 and upper trailing arm 2.3 for lifting auxiliary 2.2
Recessed portion 231 with respect to Matching installation connect.By arc-shaped setting, the end of trailing arm and auxiliary can be correspondingly arranged
Recessed portion in flexible rotating without interfere hinder relative motion.And the shape of upper trailing arm 2.3 and lower 2.5 connecting pin of trailing arm
It is preferably again arc-shaped, and the circular arc-shaped end is provided with through-hole, and the arc end part for being provided with through-hole of upper trailing arm 2.3 is preferred
To realize that the arc end part for being provided with through-hole with lower trailing arm 2.5 is rotatablely connected by rotation axis.
As shown in Figs. 1-2, the upper junction for lifting auxiliary 2.2 and upper trailing arm 2.3, the lower company for lifting auxiliary 2.4 and lower trailing arm 2.5
The place of connecing is both provided with automatic card lock component 3.As shown in fig. 6-7, upper 221 plane of recessed portion for lifting auxiliary 2.2 is pacified equipped with pinion stand
Dress portion 222, the lower plane for lifting auxiliary recessed portion 231 are equipped with internal tooth wheel face 232.As shown in Figure 3-4, automatic card lock component 3 includes
Transmission gear 3.6, pinion stand 3.8 and articulated shaft 3.9.Pinion stand 3.8 is fixedly mounted in pinion stand mounting portion by screw, institute
It states pinion stand and the direction of inward-facing face of gear 232 is provided with the tooth form flank of tooth.The outer flank of tooth and internal tooth wheel face of transmission gear 3.6
232 engagements, transmission gear 3.6 are equipped with the tooth form flank of tooth, pinion stand 3.8 and transmission gear along the direction towards pinion stand mounting portion
3.6 are connected by tooth form flank engagement.Articulated shaft 3.9 passes through the center mounting hole of transmission gear 3.6, pinion stand 3.8, and cuts with scissors
The step surface of spindle 3.9 is abutted with transmission gear 3.6.When articulated shaft is translated by axial force towards internal tooth wheel face, hingedly
Axis 3.9 can push transmission gear 3.6 to separate with pinion stand 3.8, and the connected two-arm of automatic card lock component can be adjusted flexibly at this time
Angle.As shown in figure 5, end face opposite with the tooth form flank of tooth on transmission gear 3.6 abuts flexible part, the elasticity of the elastic component
Power is contrary with axial force, and when articulated shaft is not by external force, elastic component keeps transmission gear to nibble with pinion stand
It closes.The end connecting on upper trailing arm 2.3 with upper act auxiliary 2.2 is connected with installation end cap 3.5.Installation end cap 3.5 is fixedly mounted on
The outerplanar opposite with recessed portion of upper trailing arm and lower trailing arm, the installation end cap are disc.The axis of installation end cover rim articulated shaft
To button mount is externally provided with, the button mount is cylindrical boss, and the end face of the button mount is equipped with end cap
3.1。
As shown in figure 5, button switch includes Metal snap 3.2, button spring 3.4 and curved hook 3.3.Curved hook 3.3
End outerplanar is fixedly connected with Metal snap 3.2, and the end inner plane of curved hook 3.3 is equipped with protrusion 330, the button spring
3.4 are fixed in the protrusion 330 of curved hook.It is recessed that the connecting rod that curved hook 3.3 extends from end to coupler body 332 is equipped with one
The middle position of end plane and coupler body is set into 331, described recessed 331.The end periphery of button mount is equipped with gold
Belong to button location hole, Metal snap 3.2 protrudes from the periphery of button mount 350.As shown in figure 4, button mount 350
Inner wall is further provided with protrusion 351, described raised 351 and abuts with recessed 331 cooperation of connecting rod.Articulated shaft direction installation
The end of end cap 3.5 is provided with card slot 390, and card slot 390 can engage with the coupler body 332 of curved hook.Coupler body 332 preferably for
The peripheral curved coupler body that the card slot 390 of articulated shaft 3.9 matches.
When articulated shaft 3.9 is acted on by axial force and the elastic force of elastic component 3.7 is overcome to move axially, articulated shaft 3.9
End is translated to button switch, and the card slot of articulated shaft 3.9 is in contact with coupler body 332, coupler body 332 along articulated shaft 3.9 end
It is softened, at this point, being recessed 331 and raised 351 similar leverages, the button installation end of curved hook is close to each other, Metal snap
In a part retraction button mount 350, until after coupler body 332 is clamped the card slot 390 of articulated shaft 3.9, in the bullet of button spring
Button installation end is strutted under the action of power, on the other hand, the closure of coupler body 332 realizes hinge to the card slot of clamping articulated shaft
The axially position of spindle 3.9.The elastic force of button spring 3.4 ensure that clamping of the coupler body 332 to card slot, in this case, transmission
The thread form flank of tooth of gear 3.6 and pinion stand 3.8 be in disengaged position, operator can freely adjust act auxiliary 2.2 with it is upper
Trailing arm 2.3, the lower angle for lifting auxiliary 2.4 and lower trailing arm 2.5.
When removing axial force, Metal snap 3.2 is pressed, Metal snap is retracted in button mount, the hook of curved hook
Body 332 is opened and is disengaged with the card slot of articulated shaft 390, and articulated shaft 3.9 resets under the action of 3.7 elastic force of elastic component, so that
Transmission gear 3.6 is engaged again with the thread form flank of tooth of pinion stand 3.8 and is connect, and not can be carried out the adjustment of angle then in this state.
As shown in Fig. 1 or Fig. 2, power transmitting assembly 4 includes motor 4.1, motor mounting plate 4.2, motor nut 4.3, end
Portion's nut 4.4 and lead screw 4.5.Motor mounting plate 4.2 is rectangular steel plates, and center is provided with circular through hole, and bore periphery is machined with four
A counter sink and four threaded holes.Screw thread in 4.3 through-hole of motor nut is preferably dextrorotation, the spiral shell in 4.4 through-hole of end nut
Line is preferably left-handed.One end of lead screw 4.5 is provided with dowel hole, and axle body is divided into two parts, connect with motor nut 4.3
The screw thread of axle body is set as dextrorotation, and it is left-handed to be set as screw thread on the axle body connecting with end nut 4.4.Motor mounting plate 4.2 is first
It is threadedly coupled, then is fixedly connected by four screws with motor nut mounting base 430, motor with motor 4.1 by four screws
Nut mounting base 430 is sleeved in rotary shaft 2.6.Motor nut 4.3 is nested in the through-hole of motor nut mounting base 430, and
It is connect with two screws with motor nut mounting base 430.End nut 4.4 is nested in the through-hole of end nut mounting base 440,
And it is connect with two screws with end nut mounting base 440.
Lead screw 4.5 pass through motor nut 4.3, end nut 4.4 center through-hole, and by the keyway of its end with
The transmission shaft bond of motor 4.1 connects.It is worth noting that, the part of screw thread dextrorotation cooperates with motor nut 4.3 in lead screw 4.5,
The left-handed part of screw thread cooperates with end nut 4.4.When work, motor 4.1 drives lead screw 4.5 to rotate, and passes through lead screw 4.5 and electricity
The rise and fall of entire jack are realized in machine nut 4.3 and the cooperation of end nut 4.4.In jack lifting process, not only
It can be cancelled out each other with what end nut 4.4 generated along 4.5 axial force of lead screw by motor nut 4.3, also improve jack
The rate of climb.
As shown in Figs. 1-2, base assembly 5 mainly includes base plate 5.1, base bearing pin 5.2 and pedestal axle sleeve 5.3.Pedestal
Plate 5.1 includes base platform and side wall, has two symmetrical circular holes in the two sidewalls for lifting roof panel.Two base bearing pins
5.2 be optical axis, and axle portion is machined with snap clip slot by the position of two close end, and pedestal axle sleeve 5.3 is a hollow cylinder.Base bearing pin
5.2 are inserted into the two sidewalls that base plate 5.1 is passed through in the circular hole of 5.1 two sides of base plate.The groove for coming directly towards 1.2 both ends of pin shaft stretches out
The outside wall surface of 5.1 side wall of base plate, four snaps are stuck on the snap clip slot at 5.2 both ends of base bearing pin.Snap has elastic force,
Its diameter can be extended to adapt to the size of base bearing pin 5.2, and snap inserted base pin shaft 5.2 is softened, until fixed engaging
On the clip slot of base bearing pin 5.2, snap replys original-shape, and the outer diameter of snap is greater than the aperture of circular hole so as to guarantee bottom
Seat pin axis 5.2 will not be slipped from base plate 5.1.It is worth noting that, 5 structure proximate of base assembly in top component 1, with
Connection relationship and the top component for lifting component 2 are similar with the connection relationship for lifting component 2, are not just repeating.
Further verifying is made to beneficial effects of the present invention below.
Fig. 8 is the structure diagram of traditional scissor-like jack, comes directly towards component, power transmitting assembly and base assembly and this
The structure of invention is identical, in addition, the total length that the two lifts component is also identical, unique variable is that jack lifts component entirety
Shape, its shape for lifting component of traditional scissor-like jack is long straight-bar, and of the invention lift component there are refer at one
To the bending on the inside of jack.
Now the jacking effect of two kinds of jack is compared:
Before work, keep the original state of two kinds of jack all identical, distance of the top plate apart from ground (base plate) is unified
It is set as 250mm.The weight that quality is 1 ton is individually positioned on the top plate of two kinds of jack.It is simulated using motion simulation, motor
Weight is lifted 20mm in 10 seconds by forward direction rotation, calculates separately analysis, obtains the motor force that each stage motor jacking weight is exported
Square.Fig. 9 is followed successively by that traditional scissors are very heavy and the present invention motor torque curve graph that motor exports in motion analysis.
Compare the motor torque curve graph of two kinds of jack motors, it can be seen that traditional scissor-like jack is in order to smoothly jack
Weight, motor at least need the torque of 2672.5N.mm to export.And the present invention makes due to lifting modular construction using bending
The torque demand for obtaining the output of jack pair motor reduces, and motor, which only needs the torque of most 1880.5N.mm to export, just can successfully jack
Weight.It follows that: in certain jacking stroke, if jacking same object to identical height, the present invention
Lower to the torque demand of motor output, jacking ability is stronger.When the torque that lead screw needs exceeds the torque that motor can be provided
When range, this lifting component and can reduce the jacking energy of the torque demand of jack, lifting jack with bending posture
Power, to effectively avoid the frequent replacement of jack.
Technology contents and technical characterstic of the invention are had revealed that above, it being understood, however, that in creative ideas of the invention
Under, those skilled in the art can make various changes and improve to design disclosed above, but belong to protection of the invention
Range.The description of above embodiment is exemplary rather than restrictive, and protection scope of the present invention is by claim institute
It determines.
Claims (9)
1. a kind of electric adjustable jack, including top plate, lift component, automatic card lock component, power transmitting assembly and pedestal
Plate, every group is lifted the movement branched chain that component includes two axial symmetry arrangement, and the movement branched chain includes upper act auxiliary and upper trailing arm,
The upper end for lifting auxiliary is arranged in the top plate, and the movement branched chain further includes lower act auxiliary and lower trailing arm, the pedestal
The lower end for lifting auxiliary is arranged in plate, and upper trailing arm and lower trailing arm are rotatablely connected, and the power transmitting assembly is set to the pop-up
The link position of arm and lower trailing arm, which is characterized in that the component of lifting is set to off in roof symmetric arrangement, and two groups of supports
It is identical to lift modular construction；The upper act auxiliary is connect with upper trailing arm by the automatic card lock component, and the lower act auxiliary is under
Trailing arm is connected by automatic card lock component, and the automatic card lock component has opening and locking state, at automatic card lock component
When opening state, the angle of coupled two-arm can be adjusted, coupled when automatic card lock component is in locking state
The angle of two-arm is fixed；Described upper one end connect with top plate for lifting auxiliary is provided with gear face, the upper act auxiliary with
One end of upper trailing arm connection is equipped with recess portion, and described lower one end connecting with base plate for lifting auxiliary is provided with gear face, described
Lower one end connecting with lower trailing arm for lifting auxiliary is equipped with recess portion, and upper lift is further provided in auxiliary and the lower recess portion for lifting auxiliary
Pinion stand mounting portion.
2. a kind of electric adjustable jack according to claim 1, which is characterized in that the upper trailing arm it is secondary with upper act
One end of arm connection is equipped with recess portion, and the one end of the lower trailing arm connecting with lower act auxiliary is equipped with recess portion, and the upper trailing arm is under
Internal tooth wheel face is equipped in the recess portion of trailing arm.
3. a kind of electric adjustable jack according to claim 1, which is characterized in that the upper act auxiliary and lower act are secondary
The structure of arm is identical, and the upper trailing arm is identical as the structure of lower trailing arm.
4. a kind of electric adjustable jack according to claim 2, which is characterized in that the automatic card lock component includes
Transmission gear, pinion stand and articulated shaft, the pinion stand are fixedly mounted in pinion stand mounting portion, and the pinion stand is along inward-facing
The direction of face of gear is provided with the tooth form flank of tooth；The outer flank of tooth of the transmission gear is engaged with internal tooth wheel face, the transmission gear edge
Direction towards pinion stand mounting portion is equipped with the tooth form flank of tooth, and the pinion stand is connect with transmission gear by tooth form flank engagement；
The articulated shaft passes through the center mounting hole of transmission gear, pinion stand, and the step surface of the articulated shaft is supported with transmission gear
It connects, when articulated shaft is translated by axial force towards internal tooth wheel face, articulated shaft can push the transmission gear and pinion stand
Separation can adjust the angle of the connected two-arm of automatic card lock component at this time.
5. a kind of electric adjustable jack according to claim 4, which is characterized in that the automatic card lock component also wraps
Elastic component is included, the elastic component abuts the end face of transmission gear, and the elastic force of the elastic component is contrary with axial force, when
When articulated shaft is not by external force, elastic component keeps transmission gear to engage with pinion stand.
6. a kind of electric adjustable jack according to claim 4, which is characterized in that the automatic card lock component also wraps
Installation end cap is included, the installation end cap is fixedly mounted on the plane opposite with recess portion of trailing arm with lower trailing arm, installation end cover rim
Articulated shaft is equipped with button mount axially outward, and the button mount is cylindrical boss, the end of the button mount
Face is equipped with end cap.
7. a kind of electric adjustable jack according to claim 4, which is characterized in that the automatic card lock component also wraps
Include button switch, the button switch includes Metal snap, button spring and curved hook, the end outerplanar of the curved hook with
The Metal snap is fixedly connected, and the end inner plane of the curved hook is equipped with protrusion, and the button spring is fixed on song
In the protrusion of shape hook；The connecting rod that curved hook extends from end to coupler body is equipped with one and is recessed, and the recessed end that is set to is put down
The middle position in face and coupler body；The end periphery of button mount is equipped with Metal snap location hole, the Metal snap protrusion
In end cap periphery；The inner wall of button mount is further provided with protrusion, and the recessed cooperation of the protrusion and connecting rod is supported
It connects, the end of the articulated shaft towards installation end cap is provided with card slot, and the card slot can engage with the coupler body of curved hook, described
Coupler body is the curved surface coupler body to match with articulated shaft card slot；When articulated shaft is acted on by axial force and overcomes the elastic force axis of elastic component
To when movement, articulated shaft end is translated to button switch, until the card slot and curved hook of articulated shaft are clamped to realize articulated shaft
Axial position is fixed；When removing axial force, Metal snap is pressed, the curved hook is opened and taken off with the card slot of articulated shaft
It opens, the articulated shaft resets under the action of elastic component elastic force.
8. a kind of electric adjustable jack according to claim 1, which is characterized in that the power transmitting assembly includes
Motor, motor nut, end nut and lead screw, the motor nut and end nut are fixedly installed in trailing arm and lower trailing arm
Link position, the lead screw are provided with oppositely oriented thread segment, and motor nut and end nut are corresponding with its rotation direction respectively
The thread segment spiral of lead screw connects；It is connected with motor with one end of lead screw similar in motor nut, when the motor is opened, electricity
Machine drives lead screw rotation, and it is close to each other or separate with end nut that the lead screw enables to motor nut, to realize top plate
Rise or fall.
9. a kind of electric adjustable jack according to claim 8, which is characterized in that upper trailing arm passes through pin shaft and subiculum
Arm is rotatablely connected, and nut mounting base is fixed on the pin shaft, and the motor nut and end nut are respectively and fixedly installed to spiral shell
In female mounting base, wherein be equipped in the nut mounting base of motor nut while being equipped with motor mounting plate, the motor mounting plate
On be fixedly connected with motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710696793.9A CN107337140B (en) | 2017-08-15 | 2017-08-15 | A kind of electric adjustable jack |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710696793.9A CN107337140B (en) | 2017-08-15 | 2017-08-15 | A kind of electric adjustable jack |
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| Publication Number | Publication Date |
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| CN107337140A CN107337140A (en) | 2017-11-10 |
| CN107337140B true CN107337140B (en) | 2019-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710696793.9A Active CN107337140B (en) | 2017-08-15 | 2017-08-15 | A kind of electric adjustable jack |
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| CN (1) | CN107337140B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107337140B (en) * | 2017-08-15 | 2019-04-23 | 江苏科技大学 | A kind of electric adjustable jack |
| CN110395675A (en) * | 2019-08-22 | 2019-11-01 | 南通市通润汽车零部件有限公司 | With the scissor-like jack of sleeve part constraint engaging tooth |
| CN112249963A (en) * | 2020-10-22 | 2021-01-22 | 重庆电讯职业学院 | Lifting device for automobile machinery |
| CN115156897B (en) * | 2021-04-06 | 2023-09-15 | 中国航发商用航空发动机有限责任公司 | Casing installation guide device and casing installation method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058393A (en) * | 2006-04-21 | 2007-10-24 | 郑元 | Electric scissor jack |
| CN104340917A (en) * | 2014-10-23 | 2015-02-11 | 昆山铄铝机电设备有限公司 | Portable electric jack |
| CN107337140A (en) * | 2017-08-15 | 2017-11-10 | 江苏科技大学 | A kind of electric adjustable jack |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6695289B1 (en) * | 2003-02-03 | 2004-02-24 | Emil Mickael | Motor driven scissor jack with limit switches |
| US20050218385A1 (en) * | 2004-10-30 | 2005-10-06 | Larry Lemelson | Appliance for safe lifting and method for its use |
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2017
- 2017-08-15 CN CN201710696793.9A patent/CN107337140B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101058393A (en) * | 2006-04-21 | 2007-10-24 | 郑元 | Electric scissor jack |
| CN104340917A (en) * | 2014-10-23 | 2015-02-11 | 昆山铄铝机电设备有限公司 | Portable electric jack |
| CN107337140A (en) * | 2017-08-15 | 2017-11-10 | 江苏科技大学 | A kind of electric adjustable jack |
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| CN107337140A (en) | 2017-11-10 |
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