CN110125670A - Cocking mechanism and make-up and backing method for double thread part - Google Patents
Cocking mechanism and make-up and backing method for double thread part Download PDFInfo
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- CN110125670A CN110125670A CN201910485690.7A CN201910485690A CN110125670A CN 110125670 A CN110125670 A CN 110125670A CN 201910485690 A CN201910485690 A CN 201910485690A CN 110125670 A CN110125670 A CN 110125670A
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- ontology
- driving portion
- thread part
- double thread
- screw
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- 230000007246 mechanism Effects 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000009471 action Effects 0.000 claims abstract description 14
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
Abstract
The invention discloses a kind of cocking mechanism for double thread part and make-up and backing methods, wherein cocking mechanism includes ontology and driving portion, the ontology has a cavity, limiting section is provided in the cavity, when tightening, the driving portion screws in the cavity with the first rotation direction, is fixedly connected with the driving portion with the ontology；Abut the limiting section with double thread part；Screw in the second end of the double thread part in installing component；In fallback action, the driving portion is rotated with the second rotation direction, is successively detached from the driving portion and the limiting section；It is detached from the ontology and double thread part.The present invention includes at least following advantages: utilizing the limit during tightening to double thread part, so that upper clamp force is greater than the frictional force that double thread part is docked with product, complete make-up movement, utilize the disengaging with double thread part, so that rollback power is less than the frictional force that double thread part is docked with product, fallback action is completed.
Description
Technical field
The present invention relates to installation fitting mechanism technology field, a kind of particularly cocking mechanism for double thread part
And tighten and backing method.
Background technique
The description of this part, which is only provided, discloses relevant background information to the present invention, without constituting the prior art.
Two relatively independent elements can be separately fixed at its both ends as a kind of connection accessory by double thread part,
It is relatively fixed to realize that two relatively independent elements generate, applies the various aspects in industrial equipment.It is with double thread part
Example, the mode tightened generallys use the method that double nut screws, needs using hand-operated tools, time-consuming and laborious.And it is existing
Double thread part tightening tool generally has more complicated structure, and not only manufacturing cost is high, but also stability in use is not good enough.
It should be noted that the above description of the technical background be intended merely to it is convenient to technical solution of the present invention carry out it is clear,
Complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Cannot merely because these schemes of the invention
Background technology part is expounded and thinks that above-mentioned technical proposal is known to those skilled in the art.
Summary of the invention
In order to overcome the defects of the prior art, the embodiment of the invention provides a kind of make-up machines for double thread part
Structure and make-up and backing method, using the limit during tightening to double thread part, so that upper clamp force is greater than double thread
The frictional force that part is docked with product completes make-up movement, using the disengaging with double thread part, so that rollback power is less than double end spiral shell
The frictional force that line part is docked with product completes fallback action.
The embodiment of the present application discloses: a kind of cocking mechanism for double thread part, including having be oppositely arranged the
The ontology and driving portion of one end and the second end, the ontology have the appearance of the perforation first end and the second end
Chamber, is provided with limiting section in the cavity, the inner sidewall of the ontology offer respectively with the driving portion and double thread part
Be adapted to and be located at the first screw thread and the second screw thread of the limiting section two sides, the cocking mechanism have make-up movement and
Fallback action, when tightening, the driving portion are used for from the first end of the ontology through first screw thread with the
One rotation direction screws in the cavity, so that the driving portion is fixedly connected after abutting with the limiting section with the ontology, it is described
Driving portion makes the ontology for rotating after it is fixedly connected with the ontology by first screw thread with the first rotation direction
The second end is threaded into double thread part by described second and abuts to the limiting section with double thread part, the driving portion
For, with the rotation of the first rotation direction, screwing in the second end of the double thread part after the limiting section is abutted with double thread part
In installing component；
In fallback action, the driving portion can be rotated with the second rotation direction relative to the ontology straight by first screw thread
It is detached to the driving portion and the limiting section；The driving portion can after it is detached from the limiting section by a sticking department with
The ontology is fixedly connected；The driving portion can be revolved after it is fixedly connected with the ontology by second screw thread with second
To rotation until the ontology and double thread part are detached from, wherein second rotation direction is contrary with first rotation direction.
Further, the driving portion include ball-screw, screw thread be arranged on the ball-screw and with the ontology
The ball-screw nut of fixed setting.
Further, the ball-screw nut is accommodated in the tank, and the axis of the ball-screw nut with
The extending direction of tank is arranged in parallel.
Further, the sticking department includes lock-screw, the threaded hole of setting on the body, the lock-screw
It is locked across the ball-screw and the threaded hole.
Further, a disk is arranged on the ball-screw, offered on the disk it is multiple respectively with described
Threaded hole correspondence on body and the through-hole for being worn for the screw.
Further, the limiting section includes the ball being filled in the cavity, the ball respectively with the driving
Portion and double thread part point contact.
Further, the cavity has the first cavity along the first end of the ontology and the direction of the second end line
With the second cavity, the cross-sectional area of first cavity is greater than the cross-sectional area of second cavity.
Further, the maximum cross-section area of the ball is less than the cross-sectional area of first cavity, is greater than described the
The cross-sectional area of two cavitys.
The embodiment of the present application discloses: a kind of upper clamping method for double thread part includes the following steps:
Double thread part is screwed in its part in installing component from first end；
Driving portion screws in cavity by the first screw thread from the first end of ontology with the first rotation direction, so that the driving portion exists
It is fixedly connected after being abutted with the limiting section with the ontology；
Driving portion makes institute for rotating after it is fixedly connected with the ontology by first screw thread with the first rotation direction
The second end for stating ontology is threaded into double thread part to the limiting section and the double thread part by described second and supports
It connects；
Driving portion is used to after the limiting section is abutted with the double thread part make the double end with the rotation of the first rotation direction
The second end of screw element screws in installing component.
The embodiment of the present application discloses: a kind of backing method for double thread part includes the following steps:
Driving portion can be rotated relative to the ontology until the driving portion and institute by first screw thread with the second rotation direction
State limiting section disengaging；
Driving portion can be fixedly connected by a sticking department with the ontology after described its is detached from the limiting section；
Driving portion can be rotated with the second rotation direction until institute after it is fixedly connected with the ontology by second screw thread
It states ontology and the double thread part is detached from.
By above technical solution, beneficial effects of the present invention are as follows:
1, the application is by being provided with driving portion and limiting section, and in tightening action process, the driving portion passes through first
Rotation direction rotation is realized the driving portion to the limiting section and is abutted, so that the limiting section is to double thread part
The second end, which is realized, to abut, and guarantees that the abutting force of above-mentioned generation is greater than the friction screwed between double thread part and installing component
Power, and then realize the movement tightened to double thread part；
2, the application is by being provided with driving portion and limiting section, and during rollback, the driving portion passes through the second rotation
To rotation, it is detached from the driving portion and the limiting section；Driving portion is being carried out by the sticking department to lock it
Afterwards, so that the ontology and double thread part are detached from, fallback action is completed.
For above and other objects, features and advantages of the invention can be clearer and more comprehensible, preferred embodiment is cited below particularly,
And cooperate institute's accompanying drawings, it is described in detail below.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the whole explosive view in the embodiment of the present invention；
Fig. 2 is the single unit system structure sectional view in the embodiment of the present invention；
Fig. 3 is the make-up method flow diagram in the embodiment of the present invention；
Fig. 4 is the backing method flow chart in the embodiment of the present invention.
The appended drawing reference of the figures above: 1, ontology；2, cavity；3, limiting section；4, ball-screw；5, ball-screw nut；
6, lock-screw；7, disk；8, through-hole；101, first end；102, the second end；103, the first screw thread；104, the second screw thread；
201, the first cavity；202, the second cavity.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It should be noted that in the description of the present invention, term " first ", " second " etc. are used for description purposes only and distinguish
Similar object between the two and is not present sequencing, can not be interpreted as indication or suggestion relative importance.In addition,
In description of the invention, unless otherwise indicated, the meaning of " plurality " is two or more.
Referring to figs. 1 and 2, a kind of cocking mechanism for double thread part is disclosed in present embodiment, including
Ontology 1 and driving portion with the first end 101 and the second end 102 that are oppositely arranged.The ontology 1 has described in a perforation
The cavity 2 of first end 101 and the second end 102 is provided with limiting section 3 in the cavity 2, and the inner sidewall of the ontology 1 is opened
Equipped with the first screw thread 103 for being adapted to and being located at 3 two sides of limiting section with the driving portion and double thread part respectively
With the second screw thread 104, the cocking mechanism has make-up movement and fallback action, and when tightening, the driving portion is used for
The cavity 2 is screwed in the first rotation direction by first screw thread 103 from the first end 101 of the ontology 1, so that the drive
Dynamic portion is fixedly connected after abutting with the limiting section 3 with the ontology 1, and the driving portion is used for solid with the ontology 1 at it
By first screw thread 103 with the rotation of the first rotation direction after fixed connection, the second end 102 of the ontology 1 is made to pass through described the
Two screw threads 104 screw in double thread part and abut to the limiting section 3 with double thread part, and the driving portion is used in the limit
Portion 3 is rotated after abutting with double thread part with the first rotation direction, screws in the second end of the double thread part in installing component；
In fallback action, the driving portion can be revolved by first screw thread 103 with the relatively described ontology 1 of the second rotation direction
Turn until the driving portion and the limiting section 3 are detached from；The driving portion can pass through a lock after it is detached from the limiting section 3
Determine portion to be fixedly connected with the ontology 1；The driving portion can pass through second screw thread after it is fixedly connected with the ontology 1
104 are rotated with the second rotation direction until the ontology 1 is detached from double thread part, wherein second rotation direction and first rotation direction
It is contrary.
In above-mentioned embodiment, during make-up movement, the driving portion is rotated by the first rotation direction, is successively made
It obtains the driving portion and abutting is realized to the limiting section 3, so that the limiting section 3 is real to the second end 102 of double thread part
It now abuts, and guarantees that the abutting force of above-mentioned generation is greater than the frictional force screwed between double thread part and installing component, Jin Ershi
The movement that now double thread part is tightened；During rollback, the driving portion is rotated by the second rotation direction, successively makes institute
It states driving portion and the limiting section 3 is detached from；After being locked by the sticking department to driving portion, so that the ontology 1
It is detached from double thread part, completes fallback action.
In present embodiment, the cocking mechanism is arranged in vertical direction, and the driving part is upper in the ontology 1
End, double thread part are located at the lower end of the ontology 1.Preferably, studs can be selected in the double thread part in the method.Tool
Body, the ontology 1 are in multistage axis shape, and along its first end 101 towards the axis direction of the second end 102, institute
The sectional area for stating shaft end successively becomes smaller.Above-mentioned set-up mode can be suitable for subsequent drive portion and lock by the change of thickness
Determine the installation in portion, while can also save material.
In present embodiment, the cavity 2 is in circle hole shape, and is vertically extended；Preferably, the cavity 2 and institute
State the coaxial arrangement of ontology 1.First screw thread 103, which is located at the cavity 2, to be closed at the first end 101 of the ontology 1, described
Second screw thread 104, which is located at the cavity 2, to be closed at the second end 102 of the ontology 1.First screw thread 103 adapts to institute
Driving portion is stated, second screw thread 104 adapts to studs.
In present embodiment, the driving portion include ball-screw 4, screw thread be arranged on the ball-screw 4 and with institute
State the ball-screw nut 5 of the fixed setting of ontology 1.Specifically, the ball-screw 4, ball-screw nut 5 respectively with described
Body 1 is coaxially disposed, and the lateral wall of the ball-screw nut 5 is embedded in the cavity 2.The ball-screw nut 5
Upper end extends outward to form the protrusion for abutting against with the end of the ontology 1, and then convenient for passing through lock-screw 6 for institute
Ball-screw nut 5 is stated to be fixed on the ontology 1, and the ball-screw nut 5 is used for and the ball-screw 4 cooperation
Screw thread is first screw thread 103.In above-mentioned embodiment, the preferably described ball-screw nut 5 and the ontology 1
The connection type being gap-matched between cavity 2.One end of the ball-screw 4 screws in the ball-screw nut 5, and its
The end being placed in the cavity 2 can move along the vertical direction, so as to abut or separate with the limiting section 3.This
In embodiment, the connection type of point contact is used between the preferably described ball-screw 4 and the limiting section 3.
In present embodiment, the limiting section 3 includes the ball that is filled in the cavity 2, the ball respectively with institute
State driving portion and double thread part point contact.First end 101 and the second end 102 line of the cavity 2 along the ontology 1
Direction there is the first cavity 201 and the second cavity 202, the cross-sectional area of first cavity 201 is greater than second cavity
202 cross-sectional area.Specifically, the transition position of first cavity 201 and second cavity 202 is provided perpendicular to described
The step surface of the axis of ontology 1, the ball enable under the action of self gravity gravity the spherical surface of its own with it is described
The edge part of step surface abuts.In the method, the ball can be used stainless steel material and be made, and can be hollow performance side
Formula, or solid manifestation mode with no restrictions and tired is stated in the present embodiment.
The threaded hole that in present embodiment, the sticking department includes lock-screw 6, is arranged on the ontology 1, the lock
Tight screw 6 passes through the ball-screw 4 and locks with the threaded hole.A disk 7, institute are arranged on the ball-screw 4
It states and offers through-hole 8 multiple corresponding with the threaded hole on the ontology 1 respectively and for wearing for the screw on disk 7.
Specifically, it is provided with a upward latch segment on the surface of the first end 101 of the ontology 1, above-mentioned threaded hole is opened
It is located on the latch segment and vertically extends.The rounded array distribution of the through-hole 8 is described logical on the disk 7
The quantity in hole 8 is provided with 18.The disk 7 is rotated synchronously with the ball-screw 4, it is preferable that the disk 7 with it is described
Ball-screw 4 is integration setting, certainly, in other way, can also be arranged using removably.Above-mentioned locking
Journey specifically: when the ball-screw 4 rotates to predeterminated position, manually by bolt pass through the through-hole 8 after with the locking
Being threadedly engaged on block, and then the disk 7 is locked on the ontology 1, realize the relatively described ontology of the ball-screw 4
Fixation between 1.
As shown in connection with fig. 3, the embodiment of the present application discloses: a kind of upper clamping method for double thread part, including as follows
Step:
Manually double thread part is screwed in its part in installing component from first end 101；Specifically, the double end spiral shell
Line part screws in installing component along the vertical direction；
Driving portion screws in cavity 2 by the first screw thread 103 from the first end 101 of ontology 1 with the first rotation direction, so that described
Driving portion is fixedly connected after abutting with the limiting section 3 with the ontology 1；Specifically, the ball-screw 4 is located at described
Second end outside body 1 rotates under the drive of power drill, and the first end of the ball-screw 4 is moved downward until institute
The end face for stating the first end of ball-screw 4 is abutted with the ball, and applies abutting force to the ball；
Driving portion is used to after it is fixedly connected with the ontology 1 rotate by first screw thread 103 with the first rotation direction,
Make the second end 102 of the ontology 1 by second screw thread 104 screw in double thread part to the limiting section 3 with it is described
Double thread part abuts；Specifically, under the drive of power drill, the ball-screw 4 and the ontology 1 are rotated synchronously, and to
Lower movement, so that the second screw thread 104 for being located at the second end 102 of the ontology 1 screws in the second end of the studs
102 abut up to the single side of the second end 102 of the studs with the lower part of the ball, in this step, the double end
Frictional force between the first end and installing component of stud is greater than the first screw thread 103 and the studs of the ontology 1
Frictional force between second end.
Driving portion is used to after the limiting section 3 is abutted with the double thread part make described double with the rotation of the first rotation direction
The second end of head thread part screws in installing component.Specifically, under the drive of power drill, the ball-screw 4,1 and of ontology
Studs synchronous rotary completes the make-up movement of studs, this step until studs is screwed into place with respect to installing component
In rapid, the ball is greater than rubbing between the first end and installing component of the studs to the abutting force that studs applies
Wipe power.
As shown in connection with fig. 4, the embodiment of the present application discloses a kind of backing method for double thread part, including walks as follows
It is rapid:
Driving portion can be rotated relative to the ontology 1 until the driving portion by first screw thread 103 with the second rotation direction
It is detached from the limiting section 3；Specifically, power drill drives the relatively described ontology 1 of ball-screw 4 to move upwards, this process
In, the lower end of the ball screw and the ball are detached from, and then abutting force between the two disappears, the ball and double end
Abutting force between stud also accordingly disappears, in above-mentioned steps, rubbing between the first end 101 and installing component of studs
Wiping power is greater than the frictional force on the second end 102 and the ontology 1 of the studs between the second nut, and the double end
Frictional force on the second end 102 and the ontology 1 of stud between second nut is greater than the ball-screw 4 and ball-screw
Frictional force between nut 5；
Driving portion can be fixedly connected by a sticking department with the ontology 1 after described its is detached from the limiting section 3；Tool
Body, when rotating to predeterminated position, the ball-screw 4 and the ontology 1 are locked by the sticking department, and then after guarantee
For continuous power drill in rotary course, the ball-screw 4 and the ontology 1 generate torsion, can be realized and move synchronously；
Driving portion can be rotated directly by second screw thread 104 with the second rotation direction after it is fixedly connected with the ontology 1
It is detached to the ontology 1 with the double thread part.Specifically, power drill drives the ball-screw 4 and the ontology 1 opposite
Studs, which synchronizes, to be moved upwards, until the second end 102 and studs of the ontology 1 are detached from, completes fallback action；On
State in step, the torsion between the ontology 1 and the ball-screw 4 be respectively greater than studs second end and ontology 1 it
Between frictional force, the frictional force between the first end of studs and installing component, and the second end of the studs and this
Frictional force between body 1 is less than the frictional force between the first end and installing component of studs.
Specific embodiment is applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Explanation be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (10)
1. a kind of cocking mechanism for double thread part, which is characterized in that including having the first end that is oppositely arranged and the
The ontology and driving portion of two ends, the ontology have the cavity of the perforation first end and the second end, the cavity
It is inside provided with limiting section, the inner sidewall of the ontology, which offers, to be adapted to and distinguish with the driving portion and double thread part respectively
The first screw thread and the second screw thread positioned at the limiting section two sides, the cocking mechanism have make-up movement and fallback action,
When make-up acts, the driving portion is used to screw in institute by first screw thread from the first end of the ontology with the first rotation direction
Cavity is stated, so that the driving portion is fixedly connected after abutting with the limiting section with the ontology, the driving portion is used for
It is rotated after being fixedly connected with the ontology by first screw thread with the first rotation direction, and the second end of the ontology is passed through
Described second, which is threaded into double thread part, abuts to the limiting section with double thread part, and the driving portion is used in the limit
Position portion is rotated after abutting with double thread part with the first rotation direction, screws in the second end of the double thread part in installing component；
In fallback action, the driving portion can be rotated relative to the ontology until institute by first screw thread with the second rotation direction
It states driving portion and the limiting section is detached from；The driving portion can after it is detached from the limiting section by a sticking department with it is described
Ontology is fixedly connected；The driving portion can be revolved after it is fixedly connected with the ontology by second screw thread with the second rotation direction
Turn until the ontology and double thread part are detached from, wherein second rotation direction is contrary with first rotation direction.
2. being used for the cocking mechanism of double thread part as described in claim 1, which is characterized in that the driving portion includes ball
The ball-screw nut on the ball-screw and with ontology fixed setting is arranged in lead screw, screw thread.
3. being used for the cocking mechanism of double thread part as claimed in claim 2, which is characterized in that the ball-screw nut holds
It sets in the tank, and the axis of the ball-screw nut and the extending direction of tank are arranged in parallel.
4. being used for the cocking mechanism of double thread part as claimed in claim 2, which is characterized in that the sticking department includes locking
Screw, the threaded hole of setting on the body, the lock-screw passes through the ball-screw and threaded hole cooperation is locked
Tightly.
5. being used for the cocking mechanism of double thread part as claimed in claim 4, which is characterized in that be arranged on the ball-screw
There is a disk, offer multiple corresponding with the threaded hole on the ontology respectively on the disk and is used to wear for the screw
Through-hole.
6. being used for the cocking mechanism of double thread part as described in claim 1, which is characterized in that the limiting section includes filling
Ball in the cavity, the ball respectively with the driving portion and double thread part point contact.
7. being used for the cocking mechanism of double thread part as claimed in claim 6, which is characterized in that the cavity is along the ontology
First end and the direction of the second end line there is the first cavity and the second cavity, the cross-sectional area of first cavity is big
In the cross-sectional area of second cavity.
8. being used for the cocking mechanism of double thread part as claimed in claim 7, which is characterized in that the maximum of the ball is transversal
Area is less than the cross-sectional area of first cavity, greater than the cross-sectional area of second cavity.
9. a kind of upper clamping method for double thread part, including any cocking mechanism of claim 1-8, feature exists
In including the following steps:
Double thread part is screwed in its part in installing component from first end；
Driving portion screws in cavity by the first screw thread from the first end of ontology with the first rotation direction so that the driving portion with institute
It states after limiting section abuts and is fixedly connected with the ontology；
Driving portion makes described for rotating after it is fixedly connected with the ontology by first screw thread with the first rotation direction
The second end of body is threaded into double thread part by described second and abuts to the limiting section with the double thread part；
Driving portion is used to after the limiting section is abutted with the double thread part make the double thread with the rotation of the first rotation direction
The second end of part screws in installing component.
10. a kind of backing method for double thread part, including any cocking mechanism of claim 1-8, feature
It is, includes the following steps:
Driving portion can be rotated relative to the ontology with the second rotation direction until the driving portion and the limit by first screw thread
Position portion is detached from；
Driving portion can be fixedly connected by a sticking department with the ontology after described its is detached from the limiting section；
Driving portion can be rotated with the second rotation direction until described after it is fixedly connected with the ontology by second screw thread
Body and the double thread part are detached from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910485690.7A CN110125670B (en) | 2019-06-05 | 2019-06-05 | Tightening mechanism for double-ended screw and tightening and retracting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910485690.7A CN110125670B (en) | 2019-06-05 | 2019-06-05 | Tightening mechanism for double-ended screw and tightening and retracting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110125670A true CN110125670A (en) | 2019-08-16 |
| CN110125670B CN110125670B (en) | 2024-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910485690.7A Active CN110125670B (en) | 2019-06-05 | 2019-06-05 | Tightening mechanism for double-ended screw and tightening and retracting method |
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| CN (1) | CN110125670B (en) |
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| CN110125670B (en) | 2024-04-30 |
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