CN109185410A - High-precision push rod - Google Patents
High-precision push rod Download PDFInfo
- Publication number
- CN109185410A CN109185410A CN201811088247.8A CN201811088247A CN109185410A CN 109185410 A CN109185410 A CN 109185410A CN 201811088247 A CN201811088247 A CN 201811088247A CN 109185410 A CN109185410 A CN 109185410A
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- CN
- China
- Prior art keywords
- screw rod
- sleeve
- inner end
- ring
- elastic component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/204—Axial sliding means, i.e. for rotary support and axial guiding of nut or screw shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H2025/2062—Arrangements for driving the actuator
- F16H2025/2075—Coaxial drive motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/18—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for conveying or interconverting oscillating or reciprocating motions
- F16H25/20—Screw mechanisms
- F16H25/24—Elements essential to such mechanisms, e.g. screws, nuts
- F16H2025/2445—Supports or other means for compensating misalignment or offset between screw and nut
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention belongs to electric pushrod technical fields, more particularly to a kind of high-precision push rod, including sleeve, impeller, screw rod and driving mechanism, impeller includes interior sliding seat, outer sliding seat and several connecting rods, the inner end of each connecting rod is fixedly connected with interior sliding seat, the outer end of each connecting rod passes through the outer end of sleeve and connect with outer sliding seat, the inner end connection that driving mechanism is connect with screw rod；Elastic spacing component is additionally provided in sleeve, including elastic component, cover board, pressure ring and Limit Bearing, elastic component is located on screw rod and one end of elastic component is abutted with the inner end of sleeve, cover board is located on screw rod and abuts with the other end of elastic component and the intermediate through-hole for being equipped with screw mandrel and passing through, Limit Bearing turning set is set to the inner end of screw rod, and pressure ring is located on screw rod and the both ends of pressure ring are abutted with Limit Bearing and cover board respectively.Elastic component extends so that cover board, pressure ring and Limit Bearing are mobile to the outer end of sleeve, so that further clamping screw, makes screw rod keep accurate installation accuracy.
Description
Technical field
The invention belongs to electric pushrod technical field more particularly to a kind of high-precision push rods.
Background technique
Chinese invention patent (Publication No. CN104930148A) provides a kind of electric pushrod device.Electric pushrod dress
It sets and is bolted in screw rod using the first pushing part, be fixedly connected with that multiple to pass through second fixed between the first pushing part and the second pushing part
The connecting rod in portion, to drive the first pushing part to move back and forth along the axial direction of screw rod while screw rod rotation.The electric pushrod
In, the both ends of screw rod and first bearing and second bearing are rotatablely connected, and first bearing and second bearing are individually fixed in first
Fixed part and the second fixed part can easily cause bearing and screw rod to wear, so that the installation of screw rod by long-time service
Precision reduces, and gap becomes larger, so that screw rod is easy to produce vibration when working, so that vibration and abnormal sound are generated when screw rod works, and drop
Low dynamics output accuracy and service life.
Summary of the invention
The purpose of the present invention is to provide a kind of high-precision push rods, it is intended to solve in the prior art because long-time service leads to axis
Hold and screw rod abrasion and caused by screw rod installation accuracy reduce the technical issues of.
To achieve the above object, the technical solution adopted by the present invention is that: a kind of high-precision push rod, including sleeve, impeller,
Screw rod and driving mechanism, the impeller include interior sliding seat, outer sliding seat and several connecting rods, and the interior sliding seat is set to institute
It states in sleeve and is connect with the wire rod thread, the inner end of each connecting rod is fixedly connected with the interior sliding seat, each described
The outer end of connecting rod passes through the outer end of the sleeve and connect with the outer sliding seat, and the outer end of the screw rod is rotationally connected with institute
The outer end of sleeve is stated, the driving mechanism is fixed on the inner end of the sleeve and connect with the inner end of the screw rod described to drive
Screw rod rotation, is additionally provided with elastic spacing component in the sleeve, the elastic spacing component include elastic component, cover board, pressure ring and
Limit Bearing, the elastic component is located on the screw rod and one end of the elastic component is abutted with the inner end of the sleeve, institute
The through-hole for being equipped among cover board and passing through for the screw rod is stated, the cover board is located on another on the screw rod and with the elastic component
One end abuts, and the Limit Bearing is sheathed on the inner end of the screw rod rotationally to limit the position of the screw rod, the pressure
Ring is located on the screw rod and the both ends of the pressure ring are abutted with the Limit Bearing and the cover board respectively.
Optionally, the inner end of the sleeve is additionally provided with outer circumference surface with externally threaded adjusting nut, the adjusting nut
It is connect with the bush whorl and the adjusting nut is abutted close to one end of the sleeve outer end with the elastic component, the tune
The centre of section nut is equipped with for twisting the adjusting nut and provide driving mechanism power transmitting space twists through-hole.
Optionally, the elastic component is elastoplastic ring, elastic rubber ring or the pressure spring being sheathed on the screw rod.
Optionally, the Limit Bearing is the circular cone of end face bearing, single tapered roller bearing or a pair of opposing
Roller bearing.
Optionally, the inner end of the screw rod is equipped with positioning shaft shoulder, and the confined planes of the positioning shaft shoulder are towards the sleeve
Inner end, the inner end of the screw rod are additionally provided with mounting assembly, and the mounting assembly includes lantern ring, fixed ring and fastening screw, described
Lantern ring is sheathed on the inner end of the screw rod and abuts with the confined planes of the positioning shaft shoulder, and the lantern ring with the confined planes
It abuts one end and is equipped with stop collar, the Fixing shrink ring is set on the screw rod and is located at the separate confined planes of the lantern ring
One end, the outer diameter of the fixed ring are greater than the outer diameter of the lantern ring, the fastening screw connect with the wire rod thread and with institute
The one end far from the lantern ring for stating fixed ring abuts, and the Limit Bearing is sheathed on the lantern ring and the Limit Bearing
Both ends are abutted with the stop collar and the fixed ring respectively.
Optionally, the sliding rail for being parallel to the connecting rod is additionally provided in the sleeve, the interior sliding seat includes first
Sliding panel, the second sliding panel and the driving nut for being sheathed on the screw rod and connecting with the wire rod thread, described first is sliding
Movable plate and second sliding panel are respectively arranged at the driving nut both ends, first sliding panel and second sliding panel
On be equipped with sliding slot compatible with the sliding rail.
Optionally, the interior sliding seat further includes two pieces of connecting plates, first sliding panel and the one of the driving nut
End is fixedly connected, and second sliding panel is sheathed on the other end of the driving nut, and two connecting plates are with the driving spiral shell
The both ends of female axisymmetrical setting and two connecting plates respectively with first sliding panel and second sliding panel
It is fixedly connected.
Optionally, the quantity of the sliding rail is two and is symmetrically disposed on the screw rod two sides, first sliding panel and
Be all provided on second sliding panel there are two respectively with the two one-to-one sliding slots of sliding rail.
Optionally, the driving mechanism includes motor and shaft coupling, and the main shaft of the motor passes through the shaft coupling and institute
State the inner end connection of screw rod.
Optionally, the outer wall of the sleeve is equipped with hinged seat, and the hinged seat includes welding base and is fixed on the weldering
On joint chair and for the shaft seat with articulated shaft rotation connection, welding base includes the first welded plate, the second welded plate and third weldering
Fishplate bar, first welded plate and second welded plate are respectively fixedly connected in the both ends of the third welded plate, and described
One welded plate, second welded plate and the third welded plate it is tangent with the outer wall of the sleeve and with the sleeve
Outer wall welding.
Beneficial effects of the present invention: in high-precision push rod of the invention, Limit Bearing is sheathed on screw rod inner end, elastic component
One end is abutted with the inner end of sleeve, the other end is abutted with cover board, while cover board abuts again with pressure ring and pressure ring is supported with Limit Bearing
It connects, so that it is formed in the elastic spacing between the inner end of screw rod and the inner end of sleeve, when the installation accuracy of screw rod changes,
Elastic component extends so that cover board, pressure ring and Limit Bearing are mobile to the outer end of sleeve, so that further clamping screw, protects screw rod
Accurate installation accuracy is held, to avoid screw rod vibration and abnormal sound, improves power output precision and service life.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only of the invention some
Embodiment for those of ordinary skill in the art without any creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the structural schematic diagram of high-precision push rod provided in an embodiment of the present invention；
Fig. 2 is the cross-sectional view of high-precision push rod provided in an embodiment of the present invention；
Fig. 3 is the exploded view of high-precision push rod provided in an embodiment of the present invention；
Fig. 4 is the structural representation of the screw rod, interior sliding seat and connecting rod in high-precision push rod provided in an embodiment of the present invention
Figure；
Fig. 5 is the structural schematic diagram of the screw rod and interior sliding seat in high-precision push rod provided in an embodiment of the present invention.
Wherein, each appended drawing reference in figure:
1-sleeve, 11-sliding rails, 12-outer end caps, 13-inner end caps, 2-impellers, 21-interior sliding seat, 211-the
One sliding panel, the 212-the second sliding panel, 213-driving nuts, 214-connecting plates, 22-outer sliding seat, 23-connecting rods,
3-screw rods, 31-positioning shaft shoulders, 4-driving mechanisms, 41-motors, 42-shaft couplings, 43-retarders, 5-elastic spacing groups
Part, 51-elastic components, 52-cover boards, 53-pressure rings, 54-Limit Bearings, 6-adjusting nuts, 61-twist through-hole, 7-installations
Component, 71-lantern rings, 711-stop collars, 72-fixed rings, 73-fastening screws, 8-hinged seats, 81-welded plates, 82-turn
Axle bed.
Specific embodiment
The embodiment of the present invention is described below in detail, the examples of the embodiments are shown in attached drawing 1 into attached drawing 5, wherein
Same or similar label indicates same or similar element or element with the same or similar functions from beginning to end.Lead to below
It crosses the embodiment described with reference to figures 1 through attached drawing 5 to be exemplary, it is intended to be used to explain the present invention, and should not be understood as to this
The limitation of invention.
In the description of the present invention, it is to be understood that, term " length ", " width ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning
It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to limit of the invention
System.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
As shown in Figure 1 to Figure 2, the embodiment of the invention provides a kind of high-precision push rods, including sleeve 1, impeller 2, silk
Bar 3 and driving mechanism 4, impeller 2 include interior sliding seat 21, outer sliding seat 22 and several connecting rods 23, and interior sliding seat 21 is set to
Is threadedly coupled that (specifically, interior sliding seat 21 passes through driving nut 213 and wire rod thread hereinafter in sleeve 1 and with screw rod 3
Connection is also possible to interior sliding seat 21 and is provided with tool internal thread through-hole in itself, connect to realize with wire rod thread), respectively
The inner end of connecting rod 23 is fixedly connected with interior sliding seat 21, the outer end of each connecting rod 23 pass through the outer end of sleeve 1 and with outer activity
22 connection of seat (specifically, the outer end of each connecting rod 23 passes through outer end cap 12 hereinafter), the outer end of screw rod 3 is rotationally connected with
The outer end of sleeve 1, driving mechanism 4 is fixed on the inner end of sleeve 1 and the inner end connecting with screw rod 3 is connected to drive screw rod 3 to rotate,
Elastic spacing component 5 is additionally provided in sleeve 1, elastic spacing component 5 includes elastic component 51, cover board 52, pressure ring 53 and Limit Bearing
54, elastic component 51 is located on screw rod 3 and one end of elastic component 51 is abutted with the inner end of sleeve 1, is equipped among cover board 52 for silk
The through-hole that bar 3 passes through, cover board 52 are located on screw rod 3 and abut with the other end of elastic component 51, and Limit Bearing 54 is rotationally
The inner end of screw rod 3 is sheathed on to limit the position of screw rod 3, pressure ring 53 be located on screw rod 3 and the both ends of pressure ring 53 respectively with limit
Position bearing 54 and cover board 52 abut.In the present embodiment, Limit Bearing 54 is sheathed on 3 inner end of screw rod, one end of elastic component 51 and set
The inner end of cylinder 1 abuts, the other end is abutted with cover board 52, while cover board 52 abuts again with pressure ring 53 and pressure ring 53 and Limit Bearing 54
It abuts, so that the elastic spacing between the inner end of screw rod 3 and the inner end of sleeve 1 is formed in, when the installation accuracy of screw rod 3 becomes
When change, elastic component 51 moves cover board 52, pressure ring 53 and Limit Bearing 54 to the outer end of sleeve 1 by the elastic force of its own
It is dynamic, so that further clamping screw 3, makes screw rod 3 keep accurate installation accuracy, to avoid the vibration of screw rod 3 and abnormal sound, improve
Power output precision and service life.
In addition, pressure ring 53, its vertical axle center of pressure ring 53 are arranged between cover board 52 and Limit Bearing 54 in the present embodiment
Cross-sectional shape be anchor ring, the face that pressure ring 53 is abutted with Limit Bearing 54 is aforementioned anchor ring, bearing screw rod 3 during installation
On some fixed structures such as circlip, fastening screw 73 etc. are incidentally installed, therefore, the abutting of pressure ring 53 and Limit Bearing 54 is relatively
It is small, it can be avoided large area when cover board 52 directly abuts Limit Bearing 54 and abut, be that Limit Bearing 54 provides by pressure ring 53
Installation space and working space avoid cover board 52 from influencing the installation and normal work of Limit Bearing 54；Cover board 52 and elastic component 51
It abuts, therefore, cover board 52 bears the active force of elastic component 51 completely, and the active force is passed to pressure ring 53, cover board 52 and bullet
Contact area between property part 51 is big, and the pressure that cover board 52 is applied to elastic component 51 is small, if pressure ring 53 directly abuts elastic component
51 so apply biggish pressure to elastic component 51, and pressure ring 53 easily oppresses the face deformation surrender of elastic component 51 and forms annular
Slot, so that the damage of elastic component 51 and failure, therefore cover board 52 is added, the pressure of the receiving of elastic component 51 can be reduced, avoid bullet
Property part 51 generated by high-intensitive pressure deformation, damage and failure the problem of.
In the present embodiment, above and below-mentioned inner end refers to that outer end refers to separate close to one end of driving mechanism 4
One end of driving mechanism 4.
Optionally, as shown in Figure 2 and Figure 3, the inner end of sleeve 1, which is additionally provided with outer circumference surface, has externally threaded adjusting nut 6,
Adjusting nut 6 is threadedly coupled with sleeve 1 and one end of 1 outer end of close sleeve of adjusting nut 6 is abutted with elastic component 51, adjusts spiral shell
The centre of mother 6, which is equipped with, twists through-hole 61 for twisting adjusting nut 6 and providing driving mechanism 4 power transmitting space.Long-term
In use process, elastic component 51 discharges elastic force and pushes cover board 52, pressure ring 53 and Limit Bearing 54 mobile, but the bullet of elastic component 51
Power release has certain limit, will lead to that 51 elastic force of elastic component is weak, and elastic component 51 can not provide enough bullets after long-time service
Power pushes cover board 52.In the present embodiment, the adjusting nut 6 for specifically twisting through-hole 61 is added, further to compress elastic component 51,
So that elastic component 51 is compressed again, to compress Limit Bearing 54, extend the workpiece time of elastic component 51.Moreover, this implementation
In example, the installation accuracy of adjustment screw rod 3 is carried out without dismantling entire push rod, it is only necessary to dismantle driving mechanism 4 and be set in sleeve 1
The inner end cap 13 at end, can expose adjusting nut 6, so that push rod keeps installation condition, that is, compressible elastic component 51, thus
Adjust 3 precision of screw rod.Moreover, in adjusting nut 6, twisting the space that through-hole 61 is capable of providing power transmitting, silk in the present embodiment
Bar 3 or shaft coupling 42, which can pass through, twists through-hole 61, avoids adjusting nut 6 and power from transmitting and generates interference.
Specifically, twisting through-hole 61 is interior hexagonal through-hole.Twisting through-hole 61 can also be the flat recess with through-hole
Or the cross recess with through-hole specifically opens up through-hole in the centre of flat recess or cross recess.
Optionally, elastic component 51 is elastoplastic ring, elastic rubber ring or pressure spring.When elastic component 51 is elastoplastic ring
Or when elastic rubber ring, cover board 52 can reduce pressure suffered by elastoplastic ring, avoids deforming and damage；In addition, lid
Plate 52 can also bear the elastic force of elastic component 51 and unified release elastic force, and 51 local compression of elastic component is avoided to surrender and influence elasticity
Pushing distance of the part 51 to pressure ring 53 and Limit Bearing 54.When elastic component 51 is pressure spring, it is able to bear the bullet of elastic component 51
Power and unified release elastic force, pressure spring misplaces and leads to pressure spring Leading Edge Deformation when pressure spring being avoided directly to abut pressure ring 53, so that elastic force
Transmitting failure.
Optionally, Limit Bearing 54 is that the circular cone of end face bearing, single tapered roller bearing or a pair of opposing rolls
Sub- bearing.The preferably a pair of tapered roller bearing being oppositely arranged, tapered roller bearing are able to bear axial direction and diameter in the present embodiment
To active force.
Specifically, in the present embodiment, two tapered roller bearings being arranged in pairs are sheathed on the inner end of screw rod 3, two circular cones
Outwardly, the inner ring of two tapered roller bearings abuts against for the outer ring of roller bearing, the outer ring of one of tapered roller bearing and pressure
Ring 53 abuts, and the inner ring of another tapered roller bearing is abutted with the position limiting structure on screw rod 3, and pressure ring 53 is rolled with corresponding circular cone
The outer ring of sub- bearing abuts.
Optionally, as shown in Fig. 2, the inner end of screw rod 3 is equipped with positioning shaft shoulder 31 (position limiting structure on i.e. aforementioned screw rod 3),
For the confined planes of positioning shaft shoulder 31 towards the inner end of sleeve 1, the inner end of screw rod 3 is additionally provided with mounting assembly 7, and mounting assembly 7 includes set
Ring 71, fixed ring 72 and fastening screw 73, lantern ring 71 are sheathed on the inner end of screw rod 3 and abut with the confined planes of positioning shaft shoulder 31,
And the one end that abuts with confined planes of lantern ring 71 is equipped with stop collar 711, fixed ring 72 is sheathed on screw rod 3 and is located at the remote of lantern ring 71
One end from confined planes, the outer diameter of fixed ring 72 are greater than the outer diameter of lantern ring 71, lock screw be threadedly coupled with screw rod 3 and with fixation
One end of the separate lantern ring 71 of ring 72 abuts, Limit Bearing 54 be sheathed on lantern ring 71 and the both ends of Limit Bearing 54 respectively with limit
Position ring 711 and fixed ring 72 abut.In the present embodiment, Limit Bearing 54 is fixed on to the inner end of screw rod 3 by mounting assembly 7,
Specifically, lantern ring 71 is abutted with the confined planes of positioning shaft shoulder 31, while being additionally provided with 72 He of fixed ring in the other end of lantern ring 71
Fastening screw 73, to define the position of lantern ring 71, and Limit Bearing 54 then install on lantern ring 71 and Limit Bearing 54
Both ends are abutted with stop collar 711 and fixed ring 72 respectively, to secure the position of Limit Bearing 54.
Specifically, the inner ring of one of tapered roller bearing above-mentioned is abutted with fixed ring 72, another taper roller
The inner ring of bearing is abutted with the stop collar 711 on lantern ring 71.
Optionally, settable two fastening screws 73 arranged side by side of the present embodiment come enhance to lantern ring 71 locking effect
Fruit prevents lock screw 73 from loosening.
Optionally, as shown in Figure 2 and Figure 3, the sliding rail 11 for being parallel to connecting rod 23, interior sliding seat 21 are additionally provided in sleeve 1
Including the first sliding panel 211, the second sliding panel 212 and the driving nut 213 for being sheathed on screw rod 3 and being threadedly coupled with screw rod 3,
First sliding panel 211 and the second sliding panel 212 are respectively arranged at driving 213 both ends of nut, the first sliding panel 211 and the second sliding
Sliding slot compatible with sliding rail 11 is equipped on plate 212.Driving mechanism 4 drives screw rod 3 to rotate by driving nut 213, screw rod 3
Make to drive nut 213 mobile by screw thread, screw rod 3 can apply on torsion to driving nut 213, turn round so that interior sliding seat 21 applies
Power makes each connecting rod 23 twist even bending deformation to the inner end of each connecting rod 23.In the present embodiment, specifically, respectively
The inner end of connecting rod 23 is fixedly connected with the first sliding panel 211 or the second sliding panel 212, and sliding rail 11 and each connecting rod 23 are common
Sliding seat 21 is moved along in sleeve 1 in guiding, and after torsion is applied to interior sliding seat 21, passes through the first sliding in interior sliding seat 21
Plate 211 and the second sliding panel 212 apply force to sliding rail 11, since sliding rail 11 is rigid structure, are unlikely to deform, therefore sliding rail
11 bear the active force that interior sliding seat 21 applies instead of each connecting rod 23, and then avoid each connecting rod 23 because interior sliding seat 21 is applied
The torsion that adds and bending deformation, make each connecting rod 23 keep straightened condition, it is ensured that push rod steady operation.
In addition, the first sliding panel 211 and the second sliding panel 212 are respectively arranged at the two of driving nut 213 in the present embodiment
End, therefore two pairs that are slidably connected are formed, so that guide rail has better guide effect.More again, the first sliding panel 211 and
The two simple light weights of the body structure of sliding panel 212, can reduce the quality of interior sliding seat 21, reduce cost.
In the present embodiment, the first sliding panel 211 is located at one end towards driving mechanism 4 of driving nut 213, the second sliding
Plate 212, which is equipped with, corresponds the through-hole being adapted to, the inner end of each connecting rod 23 and the fixed company of the first sliding panel 211 with each connecting rod 23
Connect and the outer end of each connecting rod 23 pass through the second sliding panel 212 on corresponding through-hole.In this way, the inner end of each connecting rod 23 has two
Place is connect with interior sliding seat 21, the through-hole on the second sliding panel 212 can each connecting rod 23 of correcting avoid the bending of each connecting rod 23,
With better connection effect.
Specifically, as shown in Fig. 2 to 5, interior sliding seat 21 further includes two pieces of connecting plates 214, the first sliding panel 211 and driving
One end of nut 213 is fixedly connected, and the second sliding panel 212 is sheathed on the other end of driving nut 213, and two connecting plates 214 are to drive
The both ends of the axisymmetrical setting of dynamic nut 213 and two connecting plates 214 respectively with the first sliding panel 211 and the second sliding panel
212 are fixedly connected.In the present embodiment, interior sliding seat 21 is divided for five components, respectively driving nut 213, the first sliding panel
211, the second sliding panel 212 and two connecting plates 214, the first sliding panel 211 is fixedly connected with driving nut 213, and two connecting plates
214 is again fixed by the second sliding panel 212 for being arranged with driving 213 other end of nut, to form a sound construction, installation is torn open
Unload sliding seat 21 in convenient.And each component can individually process or bulk purchase, cost are lower.
In addition, the first sliding panel 211 is directly fixedly connected with each connecting rod 23, each company is pushed by the first sliding panel 211
Extension bar 23 is mobile, and the effect of the second sliding panel 212 is each connecting rod 23 of correcting, avoids its bending, without passing through the second sliding panel
212 output powers, thus by the second sliding panel 212 be sheathed on driving nut 213 the other end, and by two connecting plates 214 come
Fix the second sliding panel 212.
Specifically, sliding rail 11 is screwed inner surface or sliding rail 11 and 1 integrally connected of sleeve in sleeve 1.
Optionally, the quantity of sliding rail 11 is two and is symmetrically disposed on 3 two sides of screw rod, and the first sliding panel 211 and second is sliding
Be all provided on movable plate 212 there are two respectively with the one-to-one sliding slot of two sliding rail 11.Two sliding rails 11 are set and further increase sliding rail
11 guiding role, while two sliding rails 11 share the effect that interior sliding seat 21 applies, two sliding rails 11 are respectively subjected to smaller effect
Power.
Further, as shown in Figure 2 or Figure 3, driving mechanism 4 includes motor 41, and screw rod 3 is rotatably set to sleeve 1
Interior and be threadedly coupled with interior sliding seat 21, motor 41 is set to the inner end of sleeve 1, and the main shaft of motor 41 is connect with screw rod 3, and is driven
Dynamic screw rod 3 rotates.Specifically, motor 41 can be fixed on the inner face of sleeve 1, or be set to the inside of the inner end of sleeve 1.
Under the driving of motor 41, screw rod 3 is made to rotate forward or invert, drives the interior sliding seat 21 being threadedly coupled with screw rod 3 mobile, make to connect
Extension bar 23 does stretching motion.
Further, as shown in Fig. 2 or Fig. 3, driving mechanism 4 further includes shaft coupling 42, and shaft coupling 42 is connected to motor
Between 41 and screw rod 3, for the torque of motor 41 to be transferred to screw rod 3.Specifically, the main shaft of motor 41 by shaft coupling 42 with
Screw rod 3 connects, and the effect of shaft coupling 42 is that buffer motor 41 vibrates, and keeps driving force more steady when being transferred to screw rod 33.
Optionally, in the present embodiment, shaft coupling 42 is oldham coupling 42, passes through 42 small electromotor 41 of oldham coupling
Coaxiality deviation between main shaft and screw rod 3, and compensate screw rod 3 and electricity caused by due to elastic spacing component 5 elapses screw rod 3
Increased distance between machine 41, to keep power being capable of stable delivery.
Optionally, as shown in Fig. 2, driving mechanism 4 further includes retarder 43, retarder 43 is connected to motor 41 and shaft coupling
Between 42, for adjusting the transmission ratio between motor 41 and screw rod 3.Retarder 43 is connected between motor 41 and screw rod 3, is used
In the revolving speed that reduction is transferred on screw rod 3, increase the torque of screw rod 3, and then increases the driving force that screw rod 3 exports.More specifically,
Retarder 43 is set among motor 41 and shaft coupling 42.
Optionally, as shown in Fig. 2, the outer end of sleeve 1 is equipped with outer end cap 12, each connecting rod 23 passes through outer end cap 12 and outer work
Dynamic seat 22 connects, and the inner end of sleeve 1 is equipped with inner end cap 13, and motor 41 is fixed on the main shaft of the outer surface of inner end cap 13 and motor 41
It is connect across inner end cap 1313 with aforementioned shaft coupling 42 or screw rod 3.
Optionally, as shown in figure 2 above, Fig. 3, the outer wall of sleeve 1 is equipped with for fixing the hinged of entire high-precision push rod
Seat 8, hinged seat 8 include welded plate 81 and are fixed on welded plate 81 and for the shaft seat 82 with articulated shaft rotation connection, weldering
Fishplate bar 81 includes the first welded plate, the second welded plate and third welded plate, and fixation connects respectively for the first welded plate and the second welded plate
The both ends of third welded plate are connected to, the first welded plate, the second welded plate and third welded plate are tangent with the outer wall of sleeve 1.Weldering
Three blocks of plates and three side of sleeve on fishplate bar 81 are tangent, the first welded plate, the second welded plate and third welded plate respectively with sleeve 1
Outer wall welding realizes that three sides of welded plate 81 and sleeve 1 are welded, increases the stability that welded plate 81 is connect with sleeve 1.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. a kind of high-precision push rod, including sleeve, impeller, screw rod and driving mechanism, the impeller includes interior sliding seat, outer
Sliding seat and several connecting rods, the interior sliding seat are set in the sleeve and connect with the wire rod thread, each connection
The inner end of bar is fixedly connected with the interior sliding seat, the outer end of each connecting rod pass through the outer end of the sleeve and with it is described outer
Sliding seat connection, the outer end of the screw rod are rotationally connected with the outer end of the sleeve, and the driving mechanism is fixed on the sleeve
Inner end and connect with the inner end of the screw rod to drive the screw rod to rotate, it is characterised in that: be additionally provided with bullet in the sleeve
Property limit assembly, the elastic spacing component includes elastic component, cover board, pressure ring and Limit Bearing, and the elastic component is located on institute
It states on screw rod and one end of the elastic component is abutted with the inner end of the sleeve, be equipped among the cover board and passed through for the screw rod
Through-hole, the cover board is located on the screw rod and abuts with the other end of the elastic component, and the Limit Bearing can be rotated
Ground is sheathed on the inner end of the screw rod to limit the position of the screw rod, and the pressure ring is located on the screw rod and the pressure ring
Both ends abutted respectively with the Limit Bearing and the cover board.
2. high-precision push rod according to claim 1, it is characterised in that: the inner end of the sleeve is additionally provided with excircle mask
There is externally threaded adjusting nut, the adjusting nut is connect with the bush whorl and the adjusting nut is outside the sleeve
The one end at end is abutted with the elastic component, and the centre of the adjusting nut is equipped with for twisting described in the adjusting nut and offer
Twist through-hole in driving mechanism power transmitting space.
3. high-precision push rod according to claim 1, it is characterised in that: the elastic component is to be sheathed on the screw rod
Elastoplastic ring, elastic rubber ring or pressure spring.
4. high-precision push rod according to claim 1, it is characterised in that: the Limit Bearing is end face bearing, single circle
The tapered roller bearing of taper roller bearing or a pair of opposing.
5. high-precision push rod according to any one of claims 1 to 4, it is characterised in that: the inner end of the screw rod is equipped with fixed
The position shaft shoulder, the confined planes of the positioning shaft shoulder are towards the inner end of the sleeve, and the inner end of the screw rod is additionally provided with mounting assembly, institute
Stating mounting assembly includes lantern ring, fixed ring and fastening screw, the lantern ring be sheathed on the inner end of the screw rod and with the positioning
The confined planes of the shaft shoulder abut, and the one end that abuts with the confined planes of the lantern ring is equipped with stop collar, and the Fixing shrink ring is set to
The outer diameter of one end far from the confined planes on the screw rod and positioned at the lantern ring, the fixed ring is greater than the lantern ring
Outer diameter, the fastening screw connect with the wire rod thread and abut with one end far from the lantern ring of the fixed ring, institute
State that Limit Bearing is sheathed on the lantern ring and the both ends of the Limit Bearing are supported with the stop collar and the fixed ring respectively
It connects.
6. high-precision push rod according to any one of claims 1 to 4, it is characterised in that: be additionally provided in the sleeve flat
In the sliding rail of the connecting rod, the interior sliding seat includes the first sliding panel, the second sliding panel and is sheathed on the screw rod row
And the driving nut connecting with the wire rod thread, first sliding panel and second sliding panel are respectively arranged at the drive
Nut both ends are moved, are equipped with sliding slot compatible with the sliding rail on first sliding panel and second sliding panel.
7. high-precision push rod according to claim 6, it is characterised in that: the interior sliding seat further includes two pieces of connecting plates,
First sliding panel is fixedly connected with one end of the driving nut, and second sliding panel is sheathed on the driving nut
The other end, two connecting plates with it is described driving nut axisymmetrical setting and two connecting plates both ends respectively with
First sliding panel is fixedly connected with second sliding panel.
8. high-precision push rod according to claim 7, it is characterised in that: the quantity of the sliding rail is two and is symmetrical arranged
In the screw rod two sides, be all provided on first sliding panel and second sliding panel there are two respectively with two sliding rails one by one
Corresponding sliding slot.
9. high-precision push rod according to any one of claims 1 to 4, it is characterised in that: the driving mechanism includes motor
And shaft coupling, the main shaft of the motor are connect by the shaft coupling with the inner end of the screw rod.
10. high-precision push rod according to any one of claims 1 to 4, it is characterised in that: the outer wall of the sleeve is equipped with
Hinged seat, the hinged seat include welding base and are fixed on the welding base and for the shaft with articulated shaft rotation connection
Seat, welding base include the first welded plate, the second welded plate and third welded plate, first welded plate and second welded plate
It is respectively fixedly connected in the both ends of the third welded plate, first welded plate, second welded plate and third weldering
Fishplate bar is tangent with the outer wall of the sleeve and welds with the outer wall of the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811088247.8A CN109185410B (en) | 2018-09-18 | 2018-09-18 | High-precision push rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811088247.8A CN109185410B (en) | 2018-09-18 | 2018-09-18 | High-precision push rod |
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| Publication Number | Publication Date |
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| CN109185410A true CN109185410A (en) | 2019-01-11 |
| CN109185410B CN109185410B (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811088247.8A Active CN109185410B (en) | 2018-09-18 | 2018-09-18 | High-precision push rod |
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| Country | Link |
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| CN (1) | CN109185410B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111197643A (en) * | 2020-02-17 | 2020-05-26 | 公安部第一研究所 | High-precision linear motion mechanism |
| CN111853046A (en) * | 2020-06-10 | 2020-10-30 | 西安庆安电气控制有限责任公司 | Connecting rod with two-way anti-overload function |
| WO2024056924A1 (en) * | 2022-09-16 | 2024-03-21 | Bieito Ochoa Oliver | Electromechanical actuator |
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| CN111197643A (en) * | 2020-02-17 | 2020-05-26 | 公安部第一研究所 | High-precision linear motion mechanism |
| CN111853046A (en) * | 2020-06-10 | 2020-10-30 | 西安庆安电气控制有限责任公司 | Connecting rod with two-way anti-overload function |
| WO2024056924A1 (en) * | 2022-09-16 | 2024-03-21 | Bieito Ochoa Oliver | Electromechanical actuator |
| ES2966007A1 (en) * | 2022-09-16 | 2024-04-17 | Ochoa Oliver Bieito | ELECTROMECHANICAL ACTUATOR (Machine-translation by Google Translate, not legally binding) |
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|---|---|
| CN109185410B (en) | 2020-06-05 |
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Address after: 201-1, floor 2, Zhujiang building, No. 14, Longteng South Road, Dongxiao Town, Xinluo District, Longyan City, Fujian Province Applicant after: Longyan Zhikang Solar Technology Co., Ltd Address before: 518000 Unit 1212, Research and Development Building, Yanxiang Science and Technology Industrial Park, No. 11, Guangming Street High-tech Zone, Guangming New District, Shenzhen City, Guangdong Province Applicant before: Shenzhen Zhikang Xinneng Technology Co., Ltd. |
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