CN2436711Y - Energy-saving check series screw connection means - Google Patents
Energy-saving check series screw connection means Download PDFInfo
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- CN2436711Y CN2436711Y CN 00237088 CN00237088U CN2436711Y CN 2436711 Y CN2436711 Y CN 2436711Y CN 00237088 CN00237088 CN 00237088 CN 00237088 U CN00237088 U CN 00237088U CN 2436711 Y CN2436711 Y CN 2436711Y
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Abstract
The utility model relates to an energy-saving check series screw connection device. An elastic energy-saving structure is arranged on a screw connection piece to make screw connection store enough transverse screw compacting energy and axial pretension energy. When the screw is worn or deformed in a plastic mode to make the locking torque of the screw connection reduced or the axial pretension force is lost, the energy-saving check screw connection device can utilize the self stored elastic energy to effectively compensate the energy loss of the screw connection. Therefore, the loose and slow phenomenon of the screw connection is effectively prevented, and the normal work ability of the screw connection is reliably maintained.
Description
The utility model relates to the scyewed joint in the mechanical coupling field.
Scyewed joint loosening and relaxing is the universal phenomenon that exists during scyewed joint is used.Loosening (hereinafter to be referred as the pine) of so-called scyewed joint is meant that screw pair relatively rotates; Relax (hereinafter to be referred as slow) of so-called scyewed joint is meant the pretightening force loss that the pretension scyewed joint takes place in the course of the work.No matter pine or slow phenomenon take place in scyewed joint, all will make scyewed joint lose normal ability to work, that is lose efficacy.This all is unallowed in scyewed joint is used.At present the common methods of locking thread has three kinds, promptly rub locking, constraint is locking, broken secondary locking.Wherein rub and lockingly promptly utilize the screw pair friction torque when screw thread is vertical or horizontal to be compressed to reach locking; Retrain the locking constraint generation restraining moment of promptly utilizing, stop thread looseness; Broken pair is locking then to be to utilize the whole bag of tricks that screw pair is converted into non-kinematic pair, thereby eliminates the possibility of screw pair relative movement.The main application form of these methods has: 1, add anti-slow iron wire on threaded piece; 2, under nut, add spring washer; 3, on screw thread, be coated with strong adhesive; 4, adopt EXPANSION ANCHOR BOLTS; 5, install anti-slow even part etc. additional.Theory and practice all proves, more than various anti-loose methods can't solve because of the thread abrasion distortion, connect scyewed joint pine, slow problem that plastic deformation etc. causes.
The purpose of this utility model provides the anti-serial threaded connection device that relaxes of a kind of accumulation of energy.By adopting this device, solve ubiquitous scyewed joint pine, the slow problem that causes because of screw pair abrasion deformation, threaded piece plastic deformation etc. of existing threaded connection device, make scyewed joint can the regulation life time in, all the time keep enough pretightening forces and enough locking moment, thereby keep the proper functioning ability of scyewed joint reliably.
The anti-serial threaded connection device that relaxes of accumulation of energy contains horizontal accumulation of energy anti-loose structure of screw thread or the anti-slow structure of axial accumulation of energy, also can contain the anti-slow structure of horizontal accumulation of energy anti-loose structure and axial accumulation of energy simultaneously.Laterally the accumulation of energy anti-loose structure can be made of simple hollow curved surface screw thread, also can be made of expansion screw.Axially the anti-slow structure of accumulation of energy can be made of regular screw threads coupling and elasticity accumulation of energy parts, also can be arranged on the hollow bellows-like structure on the threaded fastener.Hollow curved surface screw thread is arranged on the intermediate portion of whole screw thread, and its major diameter of thread envelope surface is the curved surface of evagination; The inner chamber of hollow curved surface screw thread is an expansion chamber, and the two ends of curved surface screw thread seamlessly transit with the cylinder partial of screw thread respectively; On hollow curved surface screw thread, can be provided with along circumferentially being symmetrically distributed and connecting the some axial narrow slit of hollow thread wall, these narrow slits can penetrate into thread head vertically, also can only be distributed in hollow curved surface thread spindle to regional area.Expansion screw is made up of expansion chamber, expansive screw, locking mother etc.Expansion chamber is positioned at the end thread position of threaded piece, has certain taper; At the expansion chamber place, cut one or more vertically along the circumferential equally distributed dilatation joint that certain-length and width are arranged, and connect with expansion chamber and thread head.The bottom of expansive screw be the band tapering expansion-head, expansion-head is a hollow-core construction, in establish expansion chamber.Expansive screw penetrates in the center hole of hollow thread spare, and screw portion on the expansive screw and threaded piece inner chamber have certain clearance.Expansion-head on the expansive screw and expansion chamber constitute taper fit, and the screw portion of expansive screw stretches out hollow thread spare end.The locking nut spinner and is pressed on the end face of threaded piece on the screw thread of expansive screw end.Hollow bellows-like structure is arranged on the position that does not contain screw thread on the threaded fastener, and its inside and outside surface is the ripple anchor ring with threaded fastener central axis symmetry, the inside and outside cylinder smooth connection of inside and outside ripple anchor ring and threaded fastener.Laterally the effect of accumulation of energy anti-loose structure is when locking screw, makes screw pair along laterally storing enough elastic energy and resiliently deformable.At screw pair because of wearing and tearing or plastic deformation etc. take place, when causing the horizontal impacting force of screw pair to be lost, laterally the accumulation of energy anti-loose structure can utilize elastic energy and the resiliently deformable that self stores, the horizontal impacting force loss of the secondary loss of double thread effectively compensates, thereby make screw pair in the working life of regulation, remain enough horizontal locking torques, and then meet the requirements of anti-loosing effect.Axially the effect of the anti-slow structure of accumulation of energy then is when the pretension screw thread, for scyewed joint stores enough elastic energies and resiliently deformable vertically.Produce the loss of plastic deformation homenergic vertically at screw pair, when causing the scyewed joint axial pre tightening force to reduce, axially the anti-slow structure of accumulation of energy can be utilized axial elasticity energy and the resiliently deformable that self stores, the axial pre tightening force loss that double thread connects effectively compensates, make scyewed joint in the working life of regulation, remain enough axial pre tightening forces, thereby meet the requirements of anti-slow fruit.
Compare with existing threaded connection device, the outstanding feature of the anti-serial threaded connection device that relaxes of accumulation of energy has adopted the accumulation of energy structure exactly.At first, utilize the elasticity of accumulation of energy structure, make scyewed joint store enough vertically reach transverse elasticity energy and effective elasticity and be out of shape.When plastic deformations such as scyewed joint generation creep, the locking buffering apparatus of accumulation of energy can by and system between indeterminate the contact, elastic energy that double thread connect to take place and resiliently deformable loss effectively compensate.Make scyewed joint in scheduled time, can remain enough pretightening forces and pre-fastening moment, prevent pine, slow effect thereby reach.Secondly, by the elasticity accumulation of energy, also can significantly reduce the axial or lateral stiffness of thread connector, thereby significantly reduce the axial and horizontal dynamic load amplitude of bearing on the thread connector, this also is very favourable to the fatigue life of improving thread connector.By contrast, the regular screw threads coupling arrangement is not owing to there is the accumulation of energy structure, and elastic energy and resiliently deformable that scyewed joint stores are extremely small, and these elastic energies and resiliently deformable are born in the dynamic load process at screw thread, and very fast just loss totally.Can't compensate the energy and the resiliently deformable loss of scyewed joint, therefore, in the working life, inevitable pine, the slow phenomenon of taking place easily of scyewed joint makes to connect the normal ability to work of forfeiture at all.In addition, the regular screw threads coupling arrangement because axially and lateral stiffness much bigger with respect to the anti-threaded connection device that relaxes of accumulation of energy, its anti-fatigue ability relatively will be much lower, lose efficacy with regard to easy generation fatigue when bearing stress alternation.
Fig. 1 is embodiment one a schematic representation;
Fig. 2 is embodiment two a schematic representation;
Fig. 3 is embodiment three a schematic representation;
Fig. 4 is embodiment four a schematic representation;
Fig. 5 is embodiment five a schematic representation;
Fig. 6 is embodiment six a schematic representation;
Fig. 7 is embodiment seven a schematic representation.
For further specifying the utility model, it is as follows that the spy enumerates embodiment:
＜embodiment one 〉:
Present embodiment mainly is made up of hollow bellows-like structure 2 two-part of the hollow curved surface screw thread 1 that is arranged on bolt (screw or single head double-screw bolt) end, bolt (nail) bar portion.Hollow curved surface screw thread inner chamber is an expansion chamber 3.Hollow curved surface screw thread is arranged on the intermediate portion of whole screw thread; The two ends of curved surface screw thread seamlessly transit with the cylinder partial of screw thread respectively.On hollow thread, the some axial narrow slit 11 that is symmetrically distributed and connects the hollow thread wall along circumferential can be set, these narrow slits can penetrate into thread head vertically, also can only be distributed in the axial regional area of hollow thread.The inside and outside anchor ring of hollow bellows-like structure two ends seamlessly transit with the inside and outside cylinder of cored screw respectively.The inner chamber of the inner chamber of hollow bellows-like structure and hollow curved surface screw thread can connect mutually, also can be separated from each other.
When clamping bolt (screw or single head double-screw bolt),, internal and external screw thread is compressed along transverse elasticity, thereby form enough locking moment owing to have interference between hollow curved surface screw thread and the common internal thread; Again because the curved surface screw thread is a hollow structure, its rigidity significantly reduces, the corresponding increase of flexibility, thereby under same load allowable, can produce bigger transverse compression resiliently deformable, thereby can store enough horizontal locking torques, and then can compensate effectively because of what thread abrasion etc. caused and laterally compress energy and the loss of horizontal locking torque, significantly improve the anti-loose ability of screw thread.On the other hand, bolt (screw or single head double-screw bolt) is when pretension, also make the hollow bellows-like structure of its bar portion produce bigger resiliently deformable vertically, connect the axial pre tightening force loss that causes because of plastic deformation etc. thereby can compensate bolt (screw or single head double-screw bolt) effectively, guarantee that bolt (screw or single head double-screw bolt) connects to keep normal ability to work; Simultaneously, the reduction of axial rigidity also can effectively reduce the stress alternation amplitude that acts in the connection, thereby significantly improves the anti-fatigue ability of connection.All these can both effectively improve the reliability of connection.
＜embodiment two 〉:
Present embodiment mainly is made of the hollow bellows-like structure 2 of the expansion screw that is arranged on bolt (screw) end, bolt (screw) bar portion.Expansion screw is made up of expansion chamber 10, expansive screw 4, locking female 5.Expansion chamber is positioned at the end thread position of bolt (screw), has certain taper.At the expansion chamber place, cut one or more vertically along the circumferential equally distributed dilatation joint 6 that certain-length and width are arranged, and connect with expansion chamber 10 and thread head.The bottom of expansive screw is the expansion-head 7 of band tapering; Expansion-head is a hollow-core construction, in establish expansion chamber 8.Expansive screw penetrates in the center hole of bolt (screw), screw portion on the expansive screw and bolt (screw) cylindrical cavity has certain clearance, the expansion chamber of expansion-head on the expansive screw and bolt (screw) constitutes taper fit, and the screw portion of expansive screw stretches out hollow bolt (nail).The locking nut spinner is on the screw thread of expansive screw end.The inside and outside anchor ring of hollow bellows-like structure two ends seamlessly transit with the interior outer cylinder of cored screw respectively.The inner chamber of hollow bellows-like structure and the expansion chamber of screw thread connect mutually.
When pretension bolt (screw), the hollow bellows-like structure of its bar portion produces bigger resiliently deformable vertically, connect the axial pre tightening force loss that causes because of plastic deformation etc. thereby can compensate bolt (nail) effectively, guarantee that bolt (screw) connects to keep normal axial pre tightening force; Simultaneously, the reduction of axial rigidity also can effectively reduce the stress alternation amplitude that acts on the Bolt Connection, thereby significantly improves the anti-fatigue ability of connection.On the other hand, screw locking nut, then expansive screw and bolt expansion chamber inner chamber produce relative movement vertically, cause the conical surface mutual extrusion of the conical surface and the expansion chamber of expansion-head; Owing to be furnished with dilatation joint on the expansion chamber, expansion-head is a hollow-core construction, rigidity is less relatively, thereby the screw thread that makes bolt (screw) expansion position is along laterally producing significant elastic expansion, by elastic expansion with (interior) screw thread on the screw thread of bolt (screw) and nut or coupled along laterally compressing, thereby store enough enough energy and horizontal locking torques of laterally compressing, guarantee that loosening phenomenon does not take place scyewed joint.
＜embodiment three 〉:
Mainly double-screw bolt (stud and isometric stud) is planted the hollow curved surface screw thread 1 into the end to present embodiment, hollow bellows-like structure 2 two-part of stud bar portion are formed by being arranged on.Hollow curved surface screw thread is arranged on the intermediate portion of whole screw thread; The two ends of curved surface screw thread seamlessly transit with the cylinder partial of screw thread respectively.On hollow curved surface screw thread, the some axial narrow slit 11 that is symmetrically distributed and connects the hollow thread wall along circumferential can be set, these narrow slits can penetrate into thread head vertically, also can only be distributed in the axial regional area of hollow curved surface screw thread.The inside and outside anchor ring of hollow bellows-like structure two ends seamlessly transit with the inside and outside cylinder of cored screw respectively.The inner chamber of the inner chamber of hollow bellows-like structure and hollow curved surface screw thread can connect mutually, also can be separated from each other.On the hollow thread wall of the top of double-screw bolt, lock pin aperture 9 can be set.
When planting,, internal and external screw thread is compressed along transverse elasticity, thereby form enough horizontal clamping torques owing to have interference between hollow curved surface screw thread and the common internal thread into double-screw bolt; Again because the curved surface screw thread is a hollow structure, its rigidity significantly reduces, the corresponding increase of flexibility, thereby under same load allowable, can produce bigger transverse compression resiliently deformable, thereby can store enough horizontal locking torques, and then can compensate the horizontal locking torque loss that causes because of thread abrasion etc. effectively, significantly improve the anti-loose ability of screw thread.On the other hand, double-screw bolt is when pretension, also make the hollow bellows-like structure of its bar portion produce bigger resiliently deformable vertically, connect the axial pre tightening force loss that causes because of plastic deformation etc., guarantee that double-screw bolt connects to keep normal ability to work thereby can compensate double-screw bolt effectively; Simultaneously, the reduction of axial rigidity also can effectively reduce acting on the stress alternation amplitude that double-screw bolt connects, thereby significantly improves the anti-fatigue ability of connection.
＜embodiment four 〉:
Present embodiment mainly is made up of the expansion screw that is arranged on double-screw bolt (stud and isometric stud) end, the hollow bellows-like structure 2 of double-screw bolt bar portion.Expansion screw is made up of expansion chamber 10, expansive screw 4, locking female 5 etc.Expansion chamber is positioned at stud end screw thread position, has certain taper.At the expansion chamber place of double-screw bolt, cut one or more vertically along the circumferential equally distributed dilatation joint 6 that certain-length and width are arranged, and connect with expansion chamber and thread head.The expansive screw bottom is the expansion-head 7 of band tapering; Expansion-head is a hollow-core construction, in establish expansion chamber 8.Expansive screw penetrates in the center hole of double-screw bolt, and screw portion on the expansive screw and double-screw bolt inner chamber have certain clearance, and the expansion-head on the expansive screw and the expansion chamber of double-screw bolt constitute taper fit, and the screw portion of expansive screw stretches out hollow stud.Locking nut is buckled on the screw thread of expansive screw end.The inside and outside anchor ring two ends of hollow bellows-like structure seamlessly transit with the inside and outside cylinder of cored screw respectively.The inner chamber of hollow bellows-like structure and the expansion chamber of hollow expansion screw connect mutually.On the hollow thread wall on double-screw bolt top, lock pin aperture 9 can be set.
Screw locking nut, then expansive screw and double-screw bolt expansion chamber inner chamber produce relative movement vertically, cause the conical surface mutual extrusion of the conical surface and the expansion chamber of expansion-head; Owing to be furnished with dilatation joint on the expansion chamber, expansion-head is a hollow-core construction, rigidity is less relatively, thereby make double-screw bolt expansion chamber screw thread along laterally producing significant elastic expansion, by elastic expansion (interior) screw thread on the screw thread of hollow stud and nut or coupled is laterally compressed, thereby store enough energy and horizontal locking torques of laterally compressing, guarantee that loosening phenomenon does not take place scyewed joint.On the other hand, when the pretension double-screw bolt, the hollow bellows-like structure of its bar portion produces bigger resiliently deformable deposit vertically, connects the axial pre tightening force loss that causes because of plastic deformation etc. thereby can compensate double-screw bolt effectively, guarantees that double-screw bolt connects to keep normal ability to work; Simultaneously, the reduction of axial rigidity also can effectively reduce acting on the stress alternation amplitude that double-screw bolt connects, thereby significantly improves the anti-fatigue ability of connection.
＜embodiment five 〉:
Present embodiment mainly is made up of the empty bellows-like structure 2 that is arranged on bolt (screw or single head double-screw bolt) bar portion.Two ends, the inside and outside chamber of hollow bellows-like structure seamlessly transit with the cylinder partial of cored screw respectively.
When pretension bolt (screw or single head double-screw bolt), make the hollow bellows-like structure of its bar portion produce bigger resiliently deformable vertically, thereby can compensate connection effectively because of the axial pre tightening force loss that plastic deformation etc. causes, guarantee to connect and keep normal ability to work; Simultaneously, the reduction of axial rigidity also can effectively reduce the stress alternation amplitude that acts on the coupling, thereby significantly improves the anti-fatigue ability of connection.
＜embodiment six 〉:
Present embodiment mainly is made up of hollow bellows-like structure 2 two-part of the hollow curved surface screw thread 1 that is arranged on single head double-screw bolt (U-bolt) end, single head double-screw bolt (U-bolt) bar portion.Hollow curved surface screw thread is arranged on the intermediate portion of whole screw thread; The two ends of curved surface screw thread seamlessly transit with the cylinder partial of screw thread respectively.On hollow curved surface screw thread, the some axial narrow slit 11 that is symmetrically distributed and connects the hollow thread wall along circumferential can be set, these narrow slits can penetrate into thread head vertically, also can only be distributed in the axial regional area of hollow thread.Two ends, the inside and outside chamber of hollow bellows-like structure seamlessly transit with the cylinder partial of cored screw respectively.The inner chamber of the inner chamber of hollow bellows-like structure and hollow curved surface screw thread connects mutually.
When pretension single head double-screw bolt (U-bolt),, internal and external screw thread is compressed along transverse elasticity, thereby form enough locking moment owing to have interference between hollow curved surface screw thread and the common internal thread; Again because the curved surface screw thread is a hollow structure, its rigidity significantly reduces, the corresponding increase of flexibility, thereby under same load allowable, can produce bigger transverse compression resiliently deformable, thereby can store enough energy and horizontal locking torques of laterally compressing, and then can compensate the horizontal locking torque loss that causes because of thread abrasion etc. effectively, significantly improve the anti-loose ability of screw thread.On the other hand, single head double-screw bolt (U-bolt) is when pretension, also make the hollow bellows-like structure of its bar portion produce bigger resiliently deformable vertically, connect the axial pre tightening force loss that causes because of plastic deformation etc., guarantee to connect and keep normal ability to work thereby can compensate double-screw bolt effectively; Simultaneously, the reduction of axial rigidity also can effectively reduce the stress alternation amplitude that acts on the coupling, thereby significantly improves the anti-fatigue ability of connection.
＜embodiment seven 〉:
Present embodiment mainly is made up of the hollow curved surface screw thread 1 that is arranged on bolt (screw or single head double-screw bolt) end.Hollow curved surface screw thread is arranged on the intermediate portion of whole screw thread; The two ends of curved surface screw thread seamlessly transit with the cylinder partial of screw thread respectively.On hollow curved surface screw thread, the some axial narrow slit 11 that is symmetrically distributed and connects the hollow thread wall along circumferential can be set, these narrow slits can penetrate into thread head vertically, also can only be distributed in the axial regional area of hollow curved surface screw thread.
When clamping bolt or screw,, internal and external screw thread is compressed along transverse elasticity, thereby form enough locking moment owing to have interference between hollow curved surface screw thread and the common internal thread; Again because the curved surface screw thread is a hollow structure, its rigidity significantly reduces, the corresponding increase of flexibility, thereby under same load allowable, can produce bigger transverse compression resiliently deformable, thereby can store enough energy and horizontal locking torques of laterally compressing, and then can compensate the horizontal locking torque loss that causes because of thread abrasion etc. effectively, significantly improve the anti-loose ability of screw thread.
Claims (8)
1. the anti-serial threaded connection device that relaxes of accumulation of energy is characterized in that containing the anti-slow structure of horizontal accumulation of energy anti-loose structure of screw thread or axial accumulation of energy on threaded fastener, also can contain the anti-slow structure of horizontal accumulation of energy anti-loose structure and axial accumulation of energy simultaneously; Laterally the accumulation of energy anti-loose structure can be simple hollow curved surface screw thread, also can be expansion screw; Axially the anti-slow structure of accumulation of energy can be made of regular screw threads coupling and elasticity accumulation of energy parts, also can be arranged on the hollow bellows-like structure on the threaded fastener; Hollow curved surface screw thread is arranged on the intermediate portion of whole screw thread, its major diameter of thread envelope surface is the curved surface of evagination, the inner chamber of hollow curved surface screw thread is an expansion chamber, the two ends of curved surface screw thread seamlessly transit with the cylinder partial of screw thread respectively, on hollow curved surface screw thread, can be provided with along circumferentially being symmetrically distributed and connecting the some axial narrow slit of hollow thread wall, these narrow slits can penetrate into thread head vertically, also can only be distributed in hollow curved surface thread spindle to regional area; Expansion screw is made up of expansion chamber, expansive screw, locking mother etc., and expansion chamber is positioned at the end thread position of threaded piece, has certain taper; At the expansion chamber place, cut one or more vertically along the circumferential equally distributed dilatation joint that certain-length and width are arranged, and connect with expansion chamber and thread head; The bottom of expansive screw be the band tapering expansion-head, expansion-head is a hollow-core construction, in establish expansion chamber; Expansive screw penetrates in the center hole of hollow thread spare, and screw portion on the expansive screw and threaded piece inner chamber have certain clearance, and expansion-head on the expansive screw and expansion chamber constitute taper fit, and the screw portion of expansive screw stretches out hollow thread spare end; The locking nut spinner and is pressed on the end face of threaded piece on the screw thread of expansive screw end; Hollow bellows-like structure is arranged on the position that does not contain screw thread on the threaded fastener, and its inside and outside surface is the ripple anchor ring with threaded fastener central axis symmetry, the inside and outside cylinder smooth connection of inside and outside ripple anchor ring and threaded fastener.
2. threaded connection device according to claim 1, it is characterized in that bolt, screw or single head stud end screw thread are hollow curved surface screw thread, bolt, screw or single head double-screw bolt bar portion are hollow bellows-like structure, the inner chamber of the inner chamber of hollow bellows-like structure and hollow curved surface screw thread can connect mutually, also can be separated from each other.
3. threaded connection device according to claim 1 is characterized in that bolt or screw end screw thread are expansion screw, and bolt or screw rod portion are hollow bellows-like structure, and the inner chamber of hollow bellows-like structure and the expansion chamber of expansion screw connect mutually.
4. threaded connection device according to claim 1, it is characterized in that it is hollow curved surface screw thread that stud or isometric stud are planted into end thread, double-screw bolt bar portion is hollow bellows-like structure, the inner chamber of the inner chamber of hollow bellows-like structure and hollow curved surface screw thread can connect mutually, also can be separated from each other.On the hollow thread wall on double-screw bolt top, lock pin aperture can be set.The middle footpath of double-screw bolt two ends screw thread can be identical, also can be different.
5. threaded connection device according to claim 1, it is characterized in that the screw thread that stud or isometric stud are planted into the end is an expansion screw, double-screw bolt bar portion is hollow bellows-like structure, on the hollow thread wall on double-screw bolt top, lock pin aperture can be set.The middle footpath of double-screw bolt two ends screw thread can be identical, also can be different.
6. threaded connection device according to claim 1 is characterized in that bolt or screw rod portion are hollow bellows-like structure.
7. threaded connection device according to claim 1, the screw thread that it is characterized in that single head double-screw bolt or U bolt end are hollow curved surface screw thread.
8. threaded connection device according to claim 1, the screw thread that it is characterized in that bolt or screw end are hollow curved surface screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00237088 CN2436711Y (en) | 2000-06-11 | 2000-06-11 | Energy-saving check series screw connection means |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00237088 CN2436711Y (en) | 2000-06-11 | 2000-06-11 | Energy-saving check series screw connection means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2436711Y true CN2436711Y (en) | 2001-06-27 |
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ID=33598463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00237088 Expired - Fee Related CN2436711Y (en) | 2000-06-11 | 2000-06-11 | Energy-saving check series screw connection means |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2436711Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100484487C (en) * | 2005-04-12 | 2009-05-06 | 梁巍 | A riveted nail for medical bones |
| CN102151731A (en) * | 2010-12-31 | 2011-08-17 | 吉林诺亚机电科技有限公司 | Novel supporting core for forming end angle column component of 380-kilometer motor vehicle |
-
2000
- 2000-06-11 CN CN 00237088 patent/CN2436711Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100484487C (en) * | 2005-04-12 | 2009-05-06 | 梁巍 | A riveted nail for medical bones |
| CN102151731A (en) * | 2010-12-31 | 2011-08-17 | 吉林诺亚机电科技有限公司 | Novel supporting core for forming end angle column component of 380-kilometer motor vehicle |
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| CF01 | Termination of patent right due to non-payment of annual fee |