CN205479204U - Can high -efficient realize heavy load from locking -type lead screw mechanism - Google Patents
Can high -efficient realize heavy load from locking -type lead screw mechanism Download PDFInfo
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- CN205479204U CN205479204U CN201620274716.5U CN201620274716U CN205479204U CN 205479204 U CN205479204 U CN 205479204U CN 201620274716 U CN201620274716 U CN 201620274716U CN 205479204 U CN205479204 U CN 205479204U
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Abstract
The utility model discloses a can high -efficient realize heavy load from locking -type lead screw mechanism, including drive assembly and executive module, in the executive module, the predetermination board is decided the board with the back and is located the guide rail both ends respectively, carries out the movable plate and passes through the guide rail and slide and decide between the board in predetermination board and back, is equipped with the distance rod in the middle part of the execution movable plate, is equipped with the self -locking nut on the execution movable plate, and the auto -lock lead screw is connected with the self -locking nut, among the drive assembly, positive drive unit, reverse drive unit and lead screw synchronization unit respectively with draw the roller and be connected, predetermination board and carry out and set up the positive drive unit between the movable plate, reverse drive unit is decided to set up in the back between board and the execution movable plate, the auto -lock lead screw through lead screw synchronization unit with draw the roller and be connected. Its operation method is external power source drive auto -lock lead screw rotation, drives simultaneously to draw the roller rotation, carries out positive shift or anatrepsis through positive drive unit or reverse drive unit drive execution movable plate, self -locking nut and distance rod.
Description
Technical field
This utility model relates to technical field of power transmission, particularly to a kind of can efficiently realize heavy load from
Locking-type screw mechanism.
Background technology
Screw mechanism is actuated element most-often used on industrial equipment and precision instrument, its major function be by
Gyration is converted into linear motion, or torque axis changes into axial repeated action power, have frictional force little,
Precision height, reversibility, transmission efficiency high.And the most representational ball screw framework is notable with it
Advantage be increasingly widely applied on various plant equipment instrument.
Ball screw assembly, is mainly made up of parts such as ball, leading screw, nuts, can realize rotary motion and straight line
Mutual conversion between motion or between moment of torsion and axial force, can be by the transform linear motion of nut
For the rotary motion of leading screw, can be the linear motion of leading screw by the convert rotational motion of nut again；Can be by spiral shell
Female torque axis turns to leading screw active force vertically, the axial force of nut can be converted into leading screw again
Moment of torsion.But just because of ball screw assembly, motility in motion and load convert, cause it can not be real
Existing self-locking, therefore have to take the measure preventing reversing in some application scenarios.
At present, existing multiple self-locking device is applied on ball-screw, as worm-and-wheel gear, surmount from
Clutch, electromagnetism or liquid braking device, the driving motor etc. that can not reverse.But in actual use
All can there are some problems in these self-locking devices, as public in the patent application of Publication No. CN103115123A
Driving the locking device of a kind of ball-screw, this device includes housing, coil, screw, brake disc, pressure bullet
Spring, coil is arranged on housing, at the compression spring that is internally provided with of housing, also by guide pillar pin on housing
The brake disc that can move along guide pillar pin, the axis of brake disc and the dead in line of ball-screw, pressure are installed
Spring one end is pressed on housing, and on the disc brake rotor, the end face of the screw of ball-screw is provided with and rubs other end pressure
Wiping dish, the end face of brake disc is provided with the grinding disk that the frictional disk of the end face with screw is corresponding.This device leads to
Cross the effect of electromagnetic force and compression spring, utilize frictional disk to achieve the locking of ball-screw, therefore self-locking
Better performances, but there is structure complexity, load the problems such as little, i.e. when place apparatus of load is bigger, should
Device will be unable to be suitable for.
Simultaneously as transmit power by ball between the leading screw of ball screw assembly, and nut, the most greatly
Load easily ball-screw is caused damage, so generally using many secondary servo electricity in actual use
Machine adds ball-screw or strengthens the size of ball-screw to realize the transmission of heavy load, such as: NSK strain
Formula commercial firm develops the ultra-large type ball-screw series of maximum load capability in the world, and the leading screw diameter of axle exists
More than 140mm, basic dynamic load rating can reach more than 3000KN, but such large-sized ball
Lead screw pair not only processing difficulties, cost is the highest, and the cost of whole equipment can be made to increase considerably.
Additionally, for high-mechanic, ball-screw generally uses interior circulation, it is therefore desirable to increase reverser, need
The reverse through hole of steel ball circulating rolling to be processed guarantees that steel ball realizes Infinite Cyclic, and ball-screw will be made to tie
Structure is complicated, assembling trouble, cost intensive, inconvenient maintenance.
Therefore, for problem present in the application of current ball-screw, develop a kind of novel simple can be real
The self-locking screw mechanism of existing heavy load is significant.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of simple in construction, self-locking performance
The self-locking screw mechanism that can efficiently realize heavy load that energy is good and work process is stable.
The technical solution of the utility model is: a kind of self-locking screw mechanism that can efficiently realize heavy load, bag
Include driving assembly and executive module, executive module include Qian Dingban, perform dynamic plate, Hou Dingban, guide rail, from
Lock leading screw, self-locking nut and distance rod, front determine plate and rear determine plate and be respectively arranged on the two ends of guide rail, and plate is moved in execution
Determine plate by slide in front and determine between plate afterwards, performing to be provided with in the middle part of dynamic plate distance rod, perform dynamic plate to
The rear side determining plate and be provided with self-locking nut, self-locking leading screw is connected with self-locking nut, and self-locking leading screw end is stretched
Enter in distance rod；Assembly is driven to include drawing roller, forward drive unit, reverse drive unit and leading screw same
Walking unit, forward drive unit, reverse drive unit and screw synchronous unit are connected with traction roller respectively,
Before determine plate and perform to arrange forward drive unit between dynamic plate, determine plate afterwards and execution moved to arrange between plate and reversely driven
Moving cell, self-locking leading screw is connected with traction roller by screw synchronous unit；Self-locking leading screw external connection power source,
Self-locking nut forms ball screw assembly, with self-locking leading screw.
Described forward drive unit includes forward binding wheel and forward strap, front determine plate and perform to move on plate and respectively set
Putting forward binding wheel, the one ends wound of forward strap is fixed on traction roller, another of forward strap
End is determined on plate before being fixed on after two forward binding wheels in multiple-turns wound.
Described forward drive unit also includes forward strap locking member, and forward lock strap determines on plate before being fixed on
End is locked by forward strap locking member.
Described reverse drive unit includes reversely bundling wheel and reverse strap, determines plate afterwards and performs respectively to set on dynamic plate
Putting a reverse binding wheel, the one ends wound of reverse strap is fixed on traction roller, anyway another of strap
End is determined on plate after being fixed on after two reverse binding wheels in multiple-turns wound.
Described reverse drive unit also includes reverse strap locking member, and reverse strap determines on plate after being fixed on
End is locked by reverse strap locking member.
Described screw synchronous unit includes Timing Belt and synchronous pulley, is provided with rotary shaft, turns in the middle part of traction roller
One end of moving axis and one end of self-locking leading screw are respectively equipped with synchronous pulley, by synchronizing between two synchronous pulleys
Band connects, and when traction roller rotates, drives self-locking screw synchronous to rotate by screw synchronous unit.
Described self-locking nut and distance rod are both secured to perform on dynamic plate, and follow the dynamic plate of execution and synchronize just carrying out
To or adverse movement.
The operation method of above-mentioned self-locking screw mechanism, external power source drives self-locking leading screw to rotate, simultaneously
Driving traction roller to rotate by screw synchronous unit, traction roller drives forward drive unit or reverse drive
Unit runs, thus drives the dynamic plate of execution, self-locking nut and distance rod to carry out forward and move or reversely move,
Execution is made to move plate and front determine plate or perform dynamic plate and the chucking power determining between plate afterwards is exaggerated, it is achieved heavy load work
While work, reduce the load of ball screw assembly,.
When described forward drive unit or reverse drive unit run, by corresponding forward strap or reverse rope
Band rolling, makes execution move plate and front determine plate or perform dynamic plate and the chucking power determining between plate afterwards is exaggerated.
Described execution is moved plate, self-locking nut and distance rod and is carried out forward and move or time direction is moved, and works as distance rod
When moving the most presetting position, self-locking nut is locked, limits the dynamic plate of execution and distance rod continues to move to.
When the above-mentioned self-locking screw mechanism that can efficiently realize heavy load uses, its principle is: external power
Mechanism's (i.e. power source) is connected with self-locking leading screw, drives self-locking leading screw to rotate, traction roller and self-locking leading screw
Connected by Timing Belt, drive traction roller to rotate by Timing Belt, drive corresponding strap (i.e. forward rope
Band or reversely strap) action, a strap traction performs dynamic plate, self-locking nut and distance rod toward one end (i.e.
Near the front direction determining plate or near the rear direction determining plate) linear motion, an other strap unreels accordingly joins
Resultant motion, thus realize positive-displacement or reversely displacement, the strap bundled by multi-turn realizes putting of pull strength
Greatly, and replacing ball-screw to bear the big load in work process, distance rod moves to position set in advance
After, self-locking nut is locked, limits and performs dynamic plate and distance rod continuation motion；In forward strap and reverse strap,
Article one, while strap rolling, an other strap unreels, owing to strap is taken turns in many two strap bindings
Circle is wound around, and therefore during strap rolling, performs dynamic plate and the chucking power determined between plate can be exaggerated, it is possible to realize
While heavy load work, ball-screw is made to bear less load.When power input is carried out according to the actual requirements
Alternately when rotating forward and reversely rotate, traction roller the most correspondingly rotates forward and reversely rotates,
Thus two strap alternately rollings unreel, i.e. composition can efficiently realize the self-locking screw mechanism of heavy load.
Forward drive unit drive perform dynamic plate along guide rail carry out positive-displacement time, particularly as follows: external connection power
Source drives traction roller to rotate forward by the Timing Belt between self-locking leading screw and traction roller, draws roller band
Dynamic forward strap rolling, forward strap is driven by forward binding wheel and performs dynamic plate near the front direction determining plate
Motion；While forward strap rolling, the rotation of traction roller drives reverse strap to unreel；Positive-displacement mistake
Cheng Zhong, realizes chucking power by the forward strap being alternately wound on each forward binding wheel in multi-turn cluster
Amplify, replace ball-screw to undertake the heavy load of work process, perform dynamic plate with front determine plate product clamping time,
Amplification between chucking power and original power takes turns the winding number of turns of upper forward strap with the binding of forward strap
Equal.During positive-displacement, after distance rod moves to position set in advance, self-locking nut is locked, limit
System performs dynamic plate and distance rod continues positive movement.
Drive assembly drive perform dynamic plate along guide rail carry out reverse displacement time, particularly as follows: external connection power source leads to
Crossing the Timing Belt between self-locking leading screw and carry-over pinch rolls drives traction roller to rotate backward, and traction roller drives reversely
Strap rolling, reverse strap is driven by reversely binding wheel and performs dynamic plate and self-locking nut and distance rod to leaning on
The direction motion of plate is determined after near；Reversely while strap rolling, the rotation of traction roller drives forward strap to put
Volume；Reversely in displacement process, by being alternately wound in the reverse rope on each reverse binding wheel in multi-turn cluster
Band realizes the amplification of chucking power, replaces ball-screw to undertake the heavy load of work process, performs dynamic plate fixed with rear
During plate product clamping, the amplification between chucking power and original power and the reverse strap upper reverse rope of binding wheel
The winding number of turns of band is equal.Reversely in displacement process, after distance rod moves to position set in advance, self-locking
Nut is locked, limits and performs dynamic plate and distance rod continuation adverse movement.
During use, the positive-displacement of the dynamic plate of execution and reverse displacement are alternately.
This utility model, relative to prior art, has the advantages that
This self-locking screw mechanism principle is simple, it is easy to operates and realizes controlling, utilizing strap to export power,
Being advantageously implemented higher chucking power, while bearing heavy load work, ball-screw is subjected only to less load
Lotus, can preferably be applied to main equipment, simplifies device structure, makes that device structure is simple, floor space is little,
Reduce equipment cost.
This self-locking screw mechanism is by increasing self-locking nut on ball-screw so that performs dynamic plate and is advancing
Or while Hou Tuiing, self-locking nut is followed the dynamic plate of execution and moved, and move to specific bit at distance rod and postpone
Locked, it is possible to realize distance rod self-locking in motor process, self-locking property is good, and assembling is simple, moreover it is possible to fall
Low equipment cost.
It addition, this self-locking screw mechanism can be applicable to injection machine, bottle blowing machine or moulding press etc., range of application
Wider.
Accompanying drawing explanation
Fig. 1 is the principle schematic of this self-locking screw mechanism.
Detailed description of the invention
Below in conjunction with embodiment, the utility model is described in further detail, but of the present utility model
Embodiment is not limited to this.
Embodiment
A kind of self-locking screw mechanism that can efficiently realize heavy load of the present embodiment, including driving assembly and execution
Assembly, as it is shown in figure 1, executive module includes self-locking leading screw 1, self-locking nut 2, distance rod 3, front fixed
Plate 4, perform dynamic plate 5, determine plate 6 and guide rail 7 afterwards, front determine plate and rear determine plate and be respectively arranged on guide rail two ends,
Determine plate and determine between plate afterwards along slide in front by driving Component driver to perform dynamic plate, driving in assembly and wrap
Include and draw roller 8, forward drive unit, reverse drive unit and screw synchronous unit, forward drive unit,
Reverse drive unit and screw synchronous unit are connected with traction roller respectively, front determine plate and execution is moved between plate and set
Putting forward drive unit, determine plate afterwards and perform to arrange reverse drive unit between dynamic plate, self-locking leading screw passes through silk
Thick stick lock unit is connected with traction roller；Forward drive unit and the motion of reverse drive unit synchronous backward.
In executive module, self-locking leading screw external connection power source, self-locking nut forms ball screw assembly, with self-locking leading screw,
Self-locking nut and distance rod are fixed on the dynamic plate of execution, follow the dynamic plate of execution and are synchronized with the movement.
Forward drive unit includes forward binding wheel 10, forward strap 9 and forward strap locking member 11, front
Determining plate and perform respectively to arrange a forward binding wheel on dynamic plate, the one ends wound of forward strap is fixed on carry-over pinch rolls
On cylinder, the other end of forward strap is to determine on plate before multiple-turns wound is fixed on after two forward binding wheels；Just
The one end determined before lock strap is fixed on plate is locked by forward strap locking member.
Reverse drive unit includes reversely bundling wheel 13, reverse strap 12 and reverse strap locking member 14, after
Determining plate and perform respectively to arrange a reverse binding wheel on dynamic plate, the one ends wound of reverse strap is fixed on carry-over pinch rolls
On cylinder, anyway the other end of strap is multiple-turns wound be fixed on after two reverse binding wheels after determine on plate；Instead
The one end determined after strap is fixed on plate is locked by reverse strap locking member.
Screw synchronous unit includes Timing Belt 15 and synchronous pulley 16, is provided with rotary shaft 17 in the middle part of traction roller,
One end of rotary shaft and one end of self-locking leading screw are respectively equipped with synchronous pulley, by same between two synchronous pulleys
Step band connects, and when traction roller rotates, drives self-locking screw synchronous to rotate by screw synchronous unit.
In said mechanism, forward strap is identical with the structure of reverse strap, forward strap locking member and reverse rope
The structure of locking part is identical, and forward binding wheel is identical with reversely binding wheel construction.
Above-mentioned self-locking screw mechanism use time, its principle is: external actuating unit (i.e. power source) with
Self-locking leading screw is connected, and drives self-locking leading screw to rotate, and traction roller is connected by Timing Belt with self-locking leading screw, logical
Crossing Timing Belt drives traction roller to rotate, and drives corresponding strap (i.e. forward strap or reversely strap) action,
Article one, strap traction performs dynamic plate, self-locking nut and distance rod toward one end (i.e. near the front direction determining plate or lean on
The direction of plate is determined after near) linear motion, an other strap unreels routing motion accordingly, thus realizes forward
Displacement or reversely displacement, the strap bundled by multi-turn is realized the amplification of pull strength, and replaces ball-screw to hold
By the big load in work process, after distance rod moves to position set in advance, self-locking nut is locked, limit
System performs dynamic plate and distance rod continues motion；In forward strap and reverse strap, while a strap rolling,
An other strap unreels, owing to strap is taken turns in multiple-turns wound two strap bindings, and therefore strap rolling
Time, perform dynamic plate and the chucking power determined between plate can be exaggerated, it is possible to while realizing heavy load work, make
Ball-screw bears less load.When power input carries out rotating forward and reversely alternately according to the actual requirements
During rotation, traction roller the most correspondingly rotates forward and reversely rotates, thus two straps replace rolling
Unreel, i.e. composition can efficiently realize the self-locking screw mechanism of heavy load.
Forward drive unit drive perform dynamic plate along guide rail carry out positive-displacement time, particularly as follows: external connection power
Source drives traction roller to rotate forward by the Timing Belt between self-locking leading screw and traction roller, draws roller band
Dynamic forward strap rolling, forward strap is driven by forward binding wheel and performs dynamic plate near the front direction determining plate
Motion；While forward strap rolling, the rotation of traction roller drives reverse strap to unreel；Positive-displacement mistake
Cheng Zhong, realizes chucking power by the forward strap being alternately wound on each forward binding wheel in multi-turn cluster
Amplify, replace ball-screw to undertake the heavy load of work process, perform dynamic plate with front determine plate product clamping time,
Amplification between chucking power and original power takes turns the winding number of turns of upper forward strap with the binding of forward strap
Equal.During positive-displacement, after distance rod moves to position set in advance, self-locking nut is locked, limit
System performs dynamic plate and distance rod continues positive movement.
Drive assembly drive perform dynamic plate along guide rail carry out reverse displacement time, particularly as follows: external connection power source leads to
Crossing the Timing Belt between self-locking leading screw and carry-over pinch rolls drives traction roller to rotate backward, and traction roller drives reversely
Strap rolling, reverse strap is driven by reversely binding wheel and performs dynamic plate and self-locking nut and distance rod to leaning on
The direction motion of plate is determined after near；Reversely while strap rolling, the rotation of traction roller drives forward strap to put
Volume；Reversely in displacement process, by being alternately wound in the reverse rope on each reverse binding wheel in multi-turn cluster
Band realizes the amplification of chucking power, replaces ball-screw to undertake the heavy load of work process, performs dynamic plate fixed with rear
During plate product clamping, the amplification between chucking power and original power and the reverse strap upper reverse rope of binding wheel
The winding number of turns of band is equal.Reversely in displacement process, after distance rod moves to position set in advance, self-locking
Nut is locked, limits and performs dynamic plate and distance rod continuation adverse movement.
During use, the positive-displacement of the dynamic plate of execution and reverse displacement are alternately.
As it has been described above, just can preferably realize this utility model, above-described embodiment be only of the present utility model relatively
Good embodiment, is not used for limiting practical range of the present utility model；The most all made according to this utility model content
Impartial change with modify, all contained by this utility model claim scope required for protection.
Claims (7)
1. the self-locking screw mechanism that can efficiently realize heavy load, it is characterized in that, including driving assembly and executive module, executive module includes Qian Dingban, performs dynamic plate, Hou Dingban, guide rail, self-locking leading screw, self-locking nut and distance rod, front determine plate and rear determine plate and be respectively arranged on the two ends of guide rail, perform dynamic plate determine plate by slide in front and determine between plate afterwards, perform to be provided with distance rod in the middle part of dynamic plate, perform dynamic plate and be provided with self-locking nut towards the rear side determining plate, self-locking leading screw is connected with self-locking nut, and self-locking leading screw end stretches in distance rod；Assembly is driven to include drawing roller, forward drive unit, reverse drive unit and screw synchronous unit, forward drive unit, reverse drive unit and screw synchronous unit are connected with traction roller respectively, before determine plate and perform to move between plate forward drive unit is set, determining plate afterwards and perform to arrange reverse drive unit between dynamic plate, self-locking leading screw is connected with traction roller by screw synchronous unit；Self-locking leading screw external connection power source, self-locking nut forms ball screw assembly, with self-locking leading screw.
A kind of self-locking screw mechanism that can efficiently realize heavy load, it is characterized in that, described forward drive unit includes forward binding wheel and forward strap, before determine plate and performing, a forward binding is respectively set on dynamic plate take turns, the one ends wound of forward strap is fixed on traction roller, and the other end of forward strap is to determine on plate before multiple-turns wound is fixed on after two forward binding wheels.
A kind of self-locking screw mechanism that can efficiently realize heavy load, it is characterised in that described forward drive unit also includes forward strap locking member, one end that forward strap is determined on plate before being fixed on is locked by forward strap locking member.
A kind of self-locking screw mechanism that can efficiently realize heavy load, it is characterized in that, described reverse drive unit includes reversely bundling wheel and reverse strap, determine respectively to arrange a reverse binding on plate and the dynamic plate of execution afterwards to take turns, reversely the one ends wound of strap is fixed on traction roller, and the other end of reverse strap is to determine on plate after multiple-turns wound is fixed on after two reverse binding wheels.
A kind of self-locking screw mechanism that can efficiently realize heavy load, it is characterised in that described reverse drive unit also includes reverse strap locking member, one end that reverse strap is determined after being fixed on plate is locked by reverse strap locking member.
A kind of self-locking screw mechanism that can efficiently realize heavy load, it is characterized in that, described screw synchronous unit includes Timing Belt and synchronous pulley, it is provided with rotary shaft in the middle part of traction roller, one end of rotary shaft and one end of self-locking leading screw are respectively equipped with synchronous pulley, connected by Timing Belt between two synchronous pulleys, when traction roller rotates, drive self-locking screw synchronous to rotate by screw synchronous unit.
A kind of self-locking screw mechanism that can efficiently realize heavy load, it is characterised in that described self-locking nut and distance rod are both secured to perform on dynamic plate, and follow the dynamic plate of execution and synchronize to move forward or backwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620274716.5U CN205479204U (en) | 2016-04-01 | 2016-04-01 | Can high -efficient realize heavy load from locking -type lead screw mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620274716.5U CN205479204U (en) | 2016-04-01 | 2016-04-01 | Can high -efficient realize heavy load from locking -type lead screw mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN205479204U true CN205479204U (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620274716.5U Expired - Fee Related CN205479204U (en) | 2016-04-01 | 2016-04-01 | Can high -efficient realize heavy load from locking -type lead screw mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626809A (en) * | 2016-04-01 | 2016-06-01 | 广州华新科实业有限公司 | Self-locking lead screw mechanism capable of efficiently achieving heavy load and operation method of self-locking lead screw mechanism |
-
2016
- 2016-04-01 CN CN201620274716.5U patent/CN205479204U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105626809A (en) * | 2016-04-01 | 2016-06-01 | 广州华新科实业有限公司 | Self-locking lead screw mechanism capable of efficiently achieving heavy load and operation method of self-locking lead screw mechanism |
| CN105626809B (en) * | 2016-04-01 | 2018-08-07 | 广州华新科实业有限公司 | A kind of self-locking screw mechanism and its operation method that can efficiently realize heavy load |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20210401 |
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| CF01 | Termination of patent right due to non-payment of annual fee |