CN203796884U - Synchronous safety device of ball load-bearing nut-screw pair - Google Patents
Synchronous safety device of ball load-bearing nut-screw pair Download PDFInfo
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- CN203796884U CN203796884U CN201420136434.XU CN201420136434U CN203796884U CN 203796884 U CN203796884 U CN 203796884U CN 201420136434 U CN201420136434 U CN 201420136434U CN 203796884 U CN203796884 U CN 203796884U
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- conical surface
- nut
- cylindrical sleeve
- ball
- inner conical
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Abstract
The utility model relates to a synchronous safety device of a ball load-bearing nut-screw pair and belongs to the field of lifting machinery, hoisting machinery and water conservancy machinery. The synchronous safety device comprises a ball screw, a ball nut, a safety device outer sleeve, an inner conical surface cylindrical sleeve, an outer conical surface nut tooth clamp ring, a gap adjusting piece and an electromagnetic thruster. The safety device outer sleeve is in contact with the ball nut. The gap adjusting piece is disposed between the safety device outer sleeve and the ball nut. The safety device outer sleeve sleeves the inner conical surface cylindrical sleeve. The outer conical surface nut tooth clamp ring is disposed in the inner conical surface cylindrical sleeve. The electromagnetic thruster is in contact with the safety device outer sleeve. An ejector pin is disposed on the electromagnetic thruster. A reset spring is disposed on the inner conical surface cylindrical sleeve. An elastormer is disposed on the outer conical surface nut tooth clamp ring. The synchronous safety device is reasonable in structural design, high in positioning precision, high in transmission efficiency, long in service life, high in up-down load bearing capacity, and capable of achieving self-locking.
Description
Technical field
The utility model relates to a kind of device, especially a kind of synchronous safty device of ball load-bearing nut-screw pair, and it belongs to elevation and subsidence mechanical, Hoisting Machinery and water conservancy machinery field.
Background technique
In prior art, in conventional nut-screw pair, main application is Ai Kemu screw rod and ball screw: in traditional Ai Kemu screw rod, the worm structure in the outer and nut of screw rod with mutual coupling, screw rod is contacted and is carried out sliding friction campaign by the face between worm structure with nut, although the load of its carrying is large, but surface friction drag is also large, easy to wear, and working life is shorter.
In ball screw, in worm structure outside screw rod and in nut, be provided with ball, steel ball contacts with nut point and carries out rolling friction campaign with screw rod, although frictional force has reduced and has moved flexibly, be that accurate positioning precision is high, transmission efficiency is high, transformability is strong, the advantages such as little life-span is long of wearing and tearing, but two ends can not be carried large load object and be moved up and down, the function that there is no self-locking, in lifting process, static load ability, when state of rest because of helix angle size, make the larger extruding force of generation between ball, cause ball-returning device by accidents such as ball puncture, cause potential safety hazard.
Open day is on 01 09th, 2013, in the Chinese patent that publication number is 203003574U, discloses the utility model patent that a kind of name is called " linkage structure of a kind of ball screw pair and rack sleeve ".This patent comprises ball screw and ball nut, on described ball nut, contiguous block is set, described contiguous block is T shape, inside have mounting hole, on screw is set, described contiguous block is located by connecting on ball nut by mounting hole, with lock screw, ball nut is locked on contiguous block, boss or facet boss that arc is set on contiguous block, the ear end face of the cambered surface of boss or facet and rack sleeve offsets, and contiguous block bottom arranges counter sink.Although this patent has changed ball screw pair and rack sleeve Connecting format, reduce area of contact, improve the stressed of rack sleeve, but ball screw pair can not be carried large load object with rack sleeve two ends and be moved up and down, the function that there is no self-locking, static load ability, therefore still there is above-mentioned defect in it.
Model utility content
The purpose of this utility model is to overcome above shortcomings in prior art, and provide a kind of structural design more rationally, positioning precision is high, transmission efficiency is high, long service life, upper and lower load ability to bear is large and the synchronous safty device of ball load-bearing nut-screw pair that can self-locking.
The technical scheme in the invention for solving the above technical problem is: the synchronous safty device of this ball load-bearing nut-screw pair, the ball screw and the ball nut body that comprise mutual coupling, it is characterized in that: also comprise protecting device overcoat, inner conical surface cylindrical sleeve, male cone (strobilus masculinus) nut tooth body snap ring, gap adjusting strip and electromagnetic push device, described protecting device overcoat contacts with ball nut body, between described protecting device overcoat and ball nut body, be provided with gap adjusting strip, described inner conical surface cylindrical sleeve is located in protecting device overcoat, described male cone (strobilus masculinus) nut tooth body snap ring is arranged in inner conical surface cylindrical sleeve, described electromagnetic push device contacts with protecting device overcoat, on this electromagnetic push device, be provided with push rod, one end of described push rod is connected with inner conical surface cylindrical sleeve, the other end of push rod is connected with electromagnetic push device, in described conical surface cylindrical sleeve, be provided with Returnning spring, on described male cone (strobilus masculinus) nut tooth body snap ring, be provided with elastomer, under electromagnetic push device and action of reset spring, the axial back and forth movement of inner conical surface cylinder interplanting, between protecting device overcoat and ball nut body, be provided with gap adjusting strip, guarantee between male cone (strobilus masculinus) nut tooth body snap ring and the alveolus of ball screw that engagement accurately, implementation is synchronized with the movement, male cone (strobilus masculinus) nut tooth body snap ring is arranged in inner conical surface cylindrical sleeve, is bolted, and makes male cone (strobilus masculinus) nut tooth body snap ring do radially folding and unfolding campaign.
As preferably, the utility model also comprises jump ring, and described inner conical surface cylindrical sleeve is provided with jump ring; Make inner conical surface cylindrical sleeve produce axial motion, play the role of fastening.
As preferably, the utility model also comprises at least one positioning key, on described inner conical surface cylindrical sleeve and jump ring, is equipped with positioning key; The position of the strong fixedly inner conical surface cylindrical sleeve in location and jump ring is not rotated, and determines each movement locus.
As preferably, the quantity of positioning key described in the utility model is four, and the quantity of the positioning key in described inner conical surface cylindrical sleeve is one, and the quantity of the positioning key on described jump ring is three.
As preferably, the tapering of the tapering of inner conical surface cylindrical sleeve described in the utility model and male cone (strobilus masculinus) nut tooth body snap ring is 20:1; Between the tapering of assurance inner conical surface cylindrical sleeve and the tapering of male cone (strobilus masculinus) nut tooth body snap ring, do relative axial motion and radial motion.
As preferably, the thrust of electromagnetic push device described in the utility model is greater than the active force of Returnning spring, and the active force of described Returnning spring is greater than elastomeric flexible tension force; The push rod promotion inner conical surface cylindrical sleeve of electromagnetic push device is down moved, elastomer is unclamped nut tooth body, electromagnetic push device dead electricity, Returnning spring resilience, inner conical surface cylindrical sleeve is up moved, and elastomer is compressed, nut tooth body screw rod alveolus is held tightly, reached auto-lock function.
The utility model compared with prior art, has the following advantages and effect: 1, reasonable in design, and performance safety is reliable, and rotational efficienty is high; 2, fabricating cost is low, easy to assembly, convenient for installation and maintenance, applied widely; 3, the alveolus of ball screw and male cone (strobilus masculinus) nut tooth body snap ring are fixed on a position firmly, nut and screw rod all remain static, and have overcome the deficiency that ball nut pair can not self-locking, carry when large load moves up and down and are protected safely; 4, gapped adjusting strip between roller load-bearing nut-screw pair and synchronous protecting device overcoat, has guaranteed that the engagement between outer conical surface nut tooth body snap ring and the alveolus of ball screw is accurate, meets people's user demand.
Accompanying drawing explanation
Fig. 1 is the partial sectional view of the utility model embodiment's structural representation plan view.
Fig. 2 is the utility model embodiment's structural representation plan view.
Fig. 3 is the structural representation plan view of the utility model embodiment's male cone (strobilus masculinus) nut tooth body snap ring.
Fig. 4 is the structural representation plan view of the utility model embodiment's male cone (strobilus masculinus) nut tooth body snap ring.
Fig. 5 is the structural representation plan view of the utility model embodiment's inner conical surface cylindrical sleeve.
Fig. 6 is the structural representation plan view of the utility model embodiment's inner conical surface cylindrical sleeve.
Fig. 7 is the structural representation plan view of the utility model embodiment's protecting device overcoat.
Fig. 8 is the structural representation plan view of the utility model embodiment's protecting device overcoat.
In figure: protecting device overcoat 1, inner conical surface cylindrical sleeve 2, male cone (strobilus masculinus) nut tooth body snap ring 3, gap adjusting strip 4, electromagnetic push device 5, jump ring 6, Returnning spring 7, positioning key 8, elastomer 9, ball screw 10, ball nut body 11, push rod 12, taper angles A.
Embodiment
Below in conjunction with accompanying drawing and by embodiment, the utility model is described in further detail, and following examples are to explanation of the present utility model and the utility model is not limited to following examples.
Embodiment.
Referring to Fig. 1 to Fig. 8, the present embodiment mainly comprises protecting device overcoat 1, inner conical surface cylindrical sleeve 2, male cone (strobilus masculinus) nut tooth body snap ring 3, gap adjusting strip 4, electromagnetic push device 5, jump ring 6, Returnning spring 7, positioning key 8, elastomer 9, ball screw 10, ball nut body 11 and push rod 12.
Protecting device overcoat 1 in the present embodiment contacts with ball nut body 11, between protecting device overcoat 1 and ball nut body 11, be provided with gap adjusting strip 4, inner conical surface cylindrical sleeve 2 is located in protecting device overcoat 1, male cone (strobilus masculinus) nut tooth body snap ring 3 is arranged in inner conical surface cylindrical sleeve 2, electromagnetic push device 5 contacts with protecting device overcoat 1, inner conical surface cylindrical sleeve 2 is provided with Returnning spring 7, on male cone (strobilus masculinus) nut tooth body snap ring 3, is provided with elastomer 9.
On electromagnetic push device 5 in the present embodiment, push rod 12 is housed, one end of push rod 12 is connected with inner conical surface cylindrical sleeve 2, and the other end of push rod 12 is connected with electromagnetic push device 5.
Inner conical surface cylindrical sleeve 2 in the present embodiment is bumped in insurance overcoat, under electromagnetic propeller and Returnning spring 7 effects, realizes and comes and goes isometric exercise.
On inner conical surface cylindrical sleeve 2 in the present embodiment and jump ring 6, be equipped with positioning key 8, the quantity of positioning key 8 is four, the quantity of the positioning key 8 in inner conical surface cylindrical sleeve 2 is one, the quantity of the positioning key 8 on jump ring 6 is three, positioning key 8 is fixed its position and is not rotated, play the role of fastening, determine each movement locus.
Male cone (strobilus masculinus) nut tooth body snap ring 3 in the present embodiment is located in inner conical surface cylindrical sleeve 2, and fix by slide block and bolt, be that male cone (strobilus masculinus) nut tooth body snap ring 3 is done radially folding and unfolding campaign, the taper angles A of the taper angles A of inner conical surface cylindrical sleeve 2 and male cone (strobilus masculinus) nut tooth body snap ring 3 is 20:1, under electromagnetic push device 5 and Returnning spring 7 effects, inner conical surface cylindrical sleeve 2 is made axial back and forth movement.
The flange size of the protecting device overcoat 1 in the present embodiment is mated mutually with the flange size of ball nut body 11, and be synchronized with the movement, between protecting device overcoat 1 and ball nut body 11, be provided with gap adjusting strip 4, guarantee between male cone (strobilus masculinus) nut tooth body snap ring 3 and the alveolus of ball screw 10 that engagement accurately.
The semicircle groove of the ball screw 10 in the present embodiment is alveolus, with ball nut body 11 convex portions be tooth body, the tooth body of ball nut body 11 is semicircle spiral shapes, spacing between spiral is consistent with the helical pitch of ball screw 10, tooth body is that half circle radius equates with the semicircle groove radius of ball screw 10, the external diameter of the tooth body of described ball nut body 11 becomes conical surface shape, and taper angles A is 20:1; And nut tooth body is cut into polylith fixture block, according to its diameter, generally cut into three to six, flexible body 9 between its fixture block and fixture block is connected and forms a male cone (strobilus masculinus) nut tooth body snap ring 3, and male cone (strobilus masculinus) nut tooth body snap ring 3 can radial motion tighten up or loosen.
In the present embodiment, protecting device overcoat 1 is connected with ball nut body 11, gap is between the two adjusted by gap adjusting strip 4, implementation is synchronized with the movement, be that ball screw 10 is done rotation motion, protecting device overcoat 1 is done straight line motion with ball nut body 11, otherwise protecting device overcoat 1 is done rotation motion with ball nut body 11, and ball screw 10 is done straight line motion.
When 11 motion of ball nut body: electromagnetic push device 5 obtains electric, drive push rod 12 move and promote inner conical surface cylindrical sleeve 2 down, drive protecting device overcoat 1 downward simultaneously, male cone (strobilus masculinus) nut tooth body snap ring 3 unclamps under the effect of elastomer 9, and formed certain gap, avoid because spirality male cone (strobilus masculinus) nut tooth body snap ring 3 and ball screw 10 produce friction, ball nut body 11 is done relative movement with ball screw 10; When stopping, electromagnetic push device 5 dead electricity, push rod 12 resets, inner conical surface cylindrical sleeve 2 under the active force of Returnning spring 7 up, the conical surface active force that male cone (strobilus masculinus) nut tooth body snap ring 3 is subject to inner conical surface cylindrical sleeve 2 simultaneously inwardly tightens up, the alveolus of ball screw 10 and male cone (strobilus masculinus) nut tooth body snap ring 3 are fixed on a position firmly, ball nut body 11 all remains static with ball screw 10, overcome the deficiency that ball nut body 11 can not self-locking, carried the moved up and down guarantee in safety of large load.
By foregoing description, those skilled in the art can implement, in the equipment application such as elevation and subsidence mechanical, be promoted, and to energy-saving and emission-reduction, be also a contribution greatly, meet people's usage requirement.
In addition, it should be noted that, the specific embodiment described in this specification, the shape of its parts and components, institute's title of being named etc. can be different, and the above content described in this specification is only to the explanation of the utility model structure example.All equivalence variation or simple change of doing according to described structure, feature and the principle of the utility model patent design, are included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, all should belong to protection domain of the present utility model.
Claims (6)
1. the synchronous safty device of a ball load-bearing nut-screw pair, the ball screw and the ball nut body that comprise mutual coupling, it is characterized in that: also comprise protecting device overcoat, inner conical surface cylindrical sleeve, male cone (strobilus masculinus) nut tooth body snap ring, gap adjusting strip and electromagnetic push device, described protecting device overcoat contacts with ball nut body, between described protecting device overcoat and ball nut body, be provided with gap adjusting strip, described inner conical surface cylindrical sleeve is located in protecting device overcoat, described male cone (strobilus masculinus) nut tooth body snap ring is arranged in inner conical surface cylindrical sleeve, described electromagnetic push device contacts with protecting device overcoat, on this electromagnetic push device, be provided with push rod, one end of described push rod is connected with inner conical surface cylindrical sleeve, the other end of push rod is connected with electromagnetic push device, in described conical surface cylindrical sleeve, be provided with Returnning spring, on described male cone (strobilus masculinus) nut tooth body snap ring, be provided with elastomer.
2. the synchronous safty device of ball load-bearing nut-screw pair according to claim 1, is characterized in that: also comprise jump ring, described inner conical surface cylindrical sleeve is provided with jump ring.
3. the synchronous safty device of ball load-bearing nut-screw pair according to claim 1 and 2, is characterized in that: also comprise at least one positioning key, on described inner conical surface cylindrical sleeve and jump ring, be equipped with positioning key.
4. the synchronous safty device of ball load-bearing nut-screw pair according to claim 3, it is characterized in that: the quantity of described positioning key is four, the quantity of the positioning key in described inner conical surface cylindrical sleeve is one, and the quantity of the positioning key on described jump ring is three.
5. the synchronous safty device of ball load-bearing nut-screw pair according to claim 1, is characterized in that: the tapering of the tapering of described inner conical surface cylindrical sleeve and male cone (strobilus masculinus) nut tooth body snap ring is 20:1.
6. the synchronous safty device of ball load-bearing nut-screw pair according to claim 1, is characterized in that: the thrust of described electromagnetic push device is greater than the active force of Returnning spring, and the active force of described Returnning spring is greater than elastomeric flexible tension force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420136434.XU CN203796884U (en) | 2014-03-25 | 2014-03-25 | Synchronous safety device of ball load-bearing nut-screw pair |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420136434.XU CN203796884U (en) | 2014-03-25 | 2014-03-25 | Synchronous safety device of ball load-bearing nut-screw pair |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796884U true CN203796884U (en) | 2014-08-27 |
Family
ID=51379096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420136434.XU Expired - Fee Related CN203796884U (en) | 2014-03-25 | 2014-03-25 | Synchronous safety device of ball load-bearing nut-screw pair |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796884U (en) |
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2014
- 2014-03-25 CN CN201420136434.XU patent/CN203796884U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140827 Termination date: 20210325 |
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| CF01 | Termination of patent right due to non-payment of annual fee |