CN208651387U - Separable type foundation bolt locking device - Google Patents
Separable type foundation bolt locking device Download PDFInfo
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- CN208651387U CN208651387U CN201821383695.6U CN201821383695U CN208651387U CN 208651387 U CN208651387 U CN 208651387U CN 201821383695 U CN201821383695 U CN 201821383695U CN 208651387 U CN208651387 U CN 208651387U
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- foundation bolt
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- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 24
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000002787 reinforcement Effects 0.000 description 1
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Abstract
The utility model provides separable type foundation bolt locking device, longitudinally sequentially passes through the through-hole on the side interconnecting piece of wherein side lock arm by the stud of clamping screw, and be threadedly coupled with the internal thread hole on the side interconnecting piece of other side lock arm；It is additionally provided with the outer end that anti-theft screw inclination is threaded through clamping screw, to realize the abutting limit to nut.The utility model makes to be fitted close between locking device and bolt, increases the ability that nut bears pressure, not will cause safety accident caused by sliding because of nut, and installation speed is fast by installing hood type foundation bolt fast lockign apparatus additional.Maying be used at the various fastenings such as the various shaft towers of electric power transmission line (steel tube tower, angle steel tower), telecommunication launching tower, railway, freeway guardrail and bridge prevents from slipping and loosen in equipment, all can be used.The utility model has the advantages of simple structure, and installation operation is convenient, time saving and energy saving, and design is rationally, compact-sized, is suitble to be widely popularized.
Description
Technical field
The utility model relates to electric system technical field of auxiliary equipment, and in particular to a kind of separable type foundation bolt locking
Device.
Background technique
In recent years, with the development of economy, the reliability of power supply is put forward higher requirements.To guarantee that user does not have a power failure,
Power grid construction and equipment technological transformation must be just increased, shaft tower construction operation amount increases, and the safety accident of falling tower occurs, causes personal injury
Increase, brings more difficulties to safety management；State leader pays much attention to trouble free service, and standing fast at development must not be to sacrifice peace
It is all this impassable red line of cost, it is ensured that the life security of people；During recent Phase of Electric Power Projects, occur 5.7
It with 5.14 safety accidents of falling tower, all causes 4 people dead, causes extreme influence and injury to enterprise and family, lesson is deep, this two
Rise in rebellion former capital be do not matched as the nut of foundation bolt nut slip caused by；Construction efficiency is improved, the time is saved.Therefore
Put forth effort to develop a kind of Novel bolt locking device, guarantees that fastening foundation bolt meets safety requirements, it is ensured that construction safety.
When conventional bolt and nut assemble, to make nut rotation flexibly, there is certain standard clearance between nut and bolt.
If causing gap to increase since the producer nonstandard or construction personnel of processing organizes due to loading nut do not match etc., will result in big
The big pressure for reducing nut and bearing, Yi Fasheng safety accident.It takes to prevent from slipping the method for being bolted screw thread riveter, by
It is big in bolt screw pitch, it is time-consuming and laborious.
Utility model content
It is quick and easy for installation the purpose of the utility model is to provide a kind of separable type foundation bolt locking device, antitheft effect
Fruit is good, securely and reliably.
In order to achieve the above object, the utility model is achieved by the following technical programs:
Separable type foundation bolt locking device, including integrally formed lock arm, clamping screw and nut；The lock arm
Including semi-annular shape threaded joints and side interconnecting piece；The both ends of the annular structure of the threaded joints be respectively equipped with to
The side interconnecting piece of outer extension；The opening of the annular structure of two lock arms is oppositely arranged；The spiral shell of the clamping screw
Column longitudinally sequentially passes through the through-hole on the side interconnecting piece of lock arm described in wherein side, and the side with lock arm described in the other side
Internal thread hole on the interconnecting piece of side is threadedly coupled；The nut is threadedly coupled with the outer end of the stud of the clamping screw；Also set
There is anti-theft screw inclination to be threaded through the outer end of the clamping screw, to realize the abutting limit to the nut.
Further, it is additionally provided with reinforcing rib；The reinforcing rib is consolidated with the threaded joints and side interconnecting piece respectively
Fixed connection；And the reinforcing rib is located at the transition junction of the threaded joints and side interconnecting piece.
Further, on the side interconnecting piece along short transverse set there are two spacing setting clamping screw.
Further, the anti-theft screw is equipped with and the tilted perforations on the clamping screw are matched is threadedly coupled knot
Structure.
Further, the anti-theft screw includes top clamping portion and stud portion；The clamping portion includes intermediate clamping
Slot and the gear of side connect protrusion；The width direction two sides of the clamping groove are respectively equipped with gear and connect protrusion；The gear connects protrusion
One end is the lug boss upwardly extended, and the other end is the recessed portion gradually extended downwards.
Further, the peripheral dimension of the clamping portion is less than or equal to the peripheral dimension in the stud portion.
Further, the internal screw thread of the threaded joints is located on inner sidewall, and is threadedly coupled with foundation bolt.
Further, the spacing of two side interconnecting pieces is 4-6mm.
Further, screw thread is external thread structure on the stud of the clamping screw.
Compared with prior art, the utility model has the following beneficial effects:
1, it is quick and easy for installation: by the way that a pair of of semicircle combination together, is mounted on foundation bolt, fastens lateral locking spiral shell
Bolt to suitable position, at this time two semicircular can flexible rotating cannot thread off again, screw and fasten locking bolt, installation fastening nut is
The installation of achievable foundation bolt fast lockign apparatus, installation are very convenient.
2, the abutting locking to nut good anti-theft effect: is realized by the upper end of anti-theft screw；Through the above scheme, may be used
Realize that multipoint riveting car of nut is always locked, good anti-theft effect.
3, safe and reliable: after the utility model fasten on bolt by nut, by being laterally applied to pressure, make nut with
The connection screw thread of bolt is fitted close, and reduces fit clearance to greatest extent, increases the pressure born between nuts and bolt, significantly
Improve coupling mechanism force, it is ensured that construction personnel's safety and equipment safety reliability service may be used at the various shaft towers of electric power transmission line
The various fastenings such as (steel tube tower, angle steel tower), telecommunication launching tower, railway, freeway guardrail and bridge prevent from slipping and loosening is set
It is standby upper.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it is therefore apparent that the accompanying drawings in the following description is only
Some embodiments of the utility model, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic perspective view of the utility model；
Fig. 2 is the front view of the utility model；
Fig. 3 is the top view of the utility model；
Fig. 4 is the side view of the utility model；
Fig. 5 is the structural schematic diagram of the lock arm of the utility model；
Fig. 6 is the using state structure diagram of the lock-screw of the utility model；
Fig. 7 is the cross-sectional view of Fig. 6 of the utility model；
Fig. 8 is the structural schematic diagram of the anti-theft screw of the utility model；
Fig. 9 is the front view of Fig. 8 of the utility model；
Figure 10 is the mounting structure schematic diagram of the utility model；
Figure label explanation:
1, lock arm；11, threaded joints；12, side interconnecting piece；121, through-hole；122, internal thread hole；2, locking screw
Bolt；21, tilted perforations；3, nut；4, anti-theft screw；41, clamping portion；411, clamping groove；412, gear connects protrusion；42, stud portion；
5, foundation bolt；6, installation foot；7, reinforcing rib.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described implementation
Example is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, this field
Those of ordinary skill's every other embodiment obtained without creative efforts, belongs to the utility model
The range of protection.
In conjunction with attached drawing 1 to Figure 10, the utility model is further described:
In conjunction with attached drawing 1, Fig. 2, Fig. 3 and Fig. 5, separable type foundation bolt locking device, including integrally formed lock arm 1,
Clamping screw 2 and nut 3；The lock arm 1 includes semi-annular shape threaded joints 11 and side interconnecting piece 12；The screw thread connects
The both ends of the annular structure of socket part 11 are respectively equipped with outwardly extending side interconnecting piece 12；The annulus of two lock arms 1
The opening of shape structure is oppositely arranged；The stud of the clamping screw 2 longitudinally sequentially passes through the side of lock arm 1 described in wherein side
Through-hole 121 on interconnecting piece 12, and connect with 122 screw thread of internal thread hole on the side interconnecting piece 12 of lock arm 1 described in the other side
It connects；The nut 3 is threadedly coupled with the outer end of the stud of the clamping screw 2；Be additionally provided with the inclination of anti-theft screw 4 be threaded through it is described
The outer end of clamping screw 2, to realize the abutting limit to the nut 3；
By the way that the threaded joints of hex nut shape are arranged, the auxiliary tools such as convenient wrench come to the lock arm of the present apparatus
Hexagon blocks, and the operation that Lai Shixian is screwed facilitates installation；And relatively circular threaded joints, the hexagonal knot of the present apparatus
The fastening force of structure is bigger, and when installation is very convenient.
In conjunction with attached drawing 4, the spacing of two side interconnecting pieces 12 is 4-6mm.
Screw thread is external thread structure on the stud of the clamping screw 2.
It is additionally provided with reinforcing rib 7；Fixing respectively with the threaded joints 11 and side interconnecting piece 12 for the reinforcing rib 7 connects
It connects；And the reinforcing rib 7 is located at the transition junction of the threaded joints 11 and side interconnecting piece 12, and connects with longitudinal transition
It connects and is vertically arranged；While realizing to whole device reinforcement intensity, also it is used to guarantee the substantially parallel movement of two surface plates, is arranged
Rationally, compact-sized；And the reinforcing rib 7 is arranged close to the clamping screw 2.
Set along short transverse that there are two the clamping screw 2 of spacing setting, and mating setting phases on the side interconnecting piece 12
The component answered.
In conjunction with attached drawing 6 and Fig. 7, the anti-theft screw 4 is equipped with matched with the tilted perforations 21 on the clamping screw 2
Screw connection structure；And be threaded in tilted perforations 21 by anti-theft screw 4, under anti-theft screw 4 as described in Figure 7 can pass through
The stud at end is pierced by tilted perforations 21 and abuts with the outer end face of the nut 3, realizes the limit to the nut 3；And pass through
Adjust the length that is pierced by from anti-theft screw 4 of stud it is different, it can be achieved that the nut 3 to many places different location abutting；Work as simultaneously
When anti-theft screw 4 connects, in the outside of clamping screw 2, lower end is located in tilted perforations 21 for upper end, can be realized through antitheft spiral shell
The upper end of nail is realized to the locking of the abutting of the nut 3；Through the above scheme, it can be achieved that multipoint riveting of the nut 3
It connects and holds out against self-locking, good anti-theft effect.
The anti-theft screw 4 in conjunction with described in attached drawing 8 and Fig. 9 includes top clamping portion 41 and stud portion 42；It wraps the clamping portion 41
The gear for including intermediate clamping groove 411 and side connects protrusion 412；The width direction two sides of the clamping groove 411 are respectively equipped with gear
Connect protrusion 412；One end that the gear connects protrusion 412 is the lug boss upwardly extended, and the other end is the recess gradually extended downwards
Portion；It is snapped fit onto clamping groove 411 in the word cutter head when straight screwdriver and when the entire anti-theft screw 4 of coaxial rotating；Work as screw
The two sides face of cutter head keeps off when connecing the rotation, it can be achieved that entire anti-theft screw 4 with lug boss described in two sides respectively；Work as screwdriver
When head reversely rotates, due to the recessed portion that recessed portion is the arcuation groove tilted upward, can not direction entire anti-theft screw 4 is used
Power, it is achieved that single direction rotation；Unidirectionally the tightening in clamping screw 2 to anti-theft screw 4 can be realized by screwdriver, it is easy to operate
Fast, it can only unidirectionally tighten, easy for installation, good anti-theft effect, installation is very convenient, greatly reduces installation cost, improves
Installation speed.
The peripheral dimension of the clamping portion 41 is less than or equal to the peripheral dimension in the stud portion 42；The anti-theft screw 4
It can be attached from the both ends aperture of tilted perforations 21, it is easier for installation, so that anti-theft screw 4 can be in tilted perforations 21
It moves down more freely, practical orientation is wider.Since the spacing range of side interconnecting piece 12 is 4-6mm, pass through anti-theft screw 4
Front end forward extend out abutting, can be achieved completely, and operate also very convenient.
In conjunction with attached drawing 10, the internal screw thread of threaded joints 11 is located on inner sidewall, and is connected with the external screw thread of foundation bolt 5
It connects；The present apparatus is located on the installation foot 6 of equipment, limit is compressed downwards to the installation foot 6 of equipment, to realize electric system
The effective position of equipment.
As a preferred option: the connection screw thread of this locking device at least semicircle, the present apparatus mating with foundation bolt screw thread
Height is identical as with model height of nut, and being assembled into cross-sectional profile is two semicircles, is equipped with gap, 4-6 between two semicircular
Millimeter, nuts and bolt connection screw thread is in close contact when being used to buffer fastening, and semicircle both ends are equipped with prominent plane, is set in plane
There are circular hole and wire hole, wire hole outer end installs fastening nut additional, to guarantee the reliability of lateral punching bolt, prevents punching bolt sliding
De- and more convenient when assembling, a semicircle both ends are equipped with circular hole, and a semicircle both ends are equipped with wire hole, occur in pairs, with guarantee
Two semicircular forms complete connection screw thread, contacts with fastener close smooth.Depending on hole count and diameter are set with the size of nut, one
A or two, M10 or M12 bolt, width is greater than the diameter of punching, is highly the thickness of nut, can guarantee the intensity of locking i.e.
Can, thickness is identical as nut thickness, to guarantee having enough intensity.
The utility model is made close between locking device and bolt by installing hood type foundation bolt fast lockign apparatus additional
Cooperation increases the ability that nut bears pressure, not will cause safety accident caused by sliding because of nut, and installation speed is fast.It can make
Used in the various shaft towers of electric power transmission line (steel tube tower, angle steel tower), telecommunication launching tower, railway, freeway guardrail and bridge etc.
Various fastenings are prevented from slipping and be loosened in equipment, all can be used；It is big to bear pressure, will not loosen, application value is high, use scope
Extensively.
Working principle of the utility model is: together a pair of of semicircle combination, being mounted on foundation bolt, fastening when installation
Lateral locking bolt to suitable position, at this time two semicircular can flexible rotating cannot thread off again, screw and fasten locking bolt, install
The installation of foundation bolt fast lockign apparatus can be completed in fastening nut；When disassembly, in contrast.The utility model is ensuring that
After nut fastens on bolt, by being laterally applied to pressure, it is fitted close the connection screw thread of nuts and bolt, is subtracted to greatest extent
Few fit clearance, increases the pressure born between nuts and bolt, guarantees that locking device will not slip, it is ensured that construction personnel's safety
With equipment safety reliability service.
The utility model receiving pressure is big, will not be processed due to nut or construction not match, caused the accident of falling tower, people occurs
Body casualty accident；One end has connection screw thread, when installing cross bolts, does not need nut tool, easy for installation；Due to nut,
It loosen locking device will not, since locking bolt nut receiving pressure direction is vertical, make locking bolt be not easy to loosen, as long as handle
Locking bolt screw thread rivets, and can play anti-theft function；It is few to lock fastening bolt, installation locking is fast, saves the time；Structure
Simply, convenient for production, save man power and material；Reduce the maintenance load of staff；Economic and social benefit can be improved.
The utility model has the advantages of simple structure, and installation operation is convenient, time saving and energy saving, economical and practical, and rationally, structure is tight for design
It gathers, is suitble to be widely popularized.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " is orientation based on the figure
Or positional relationship, be merely for convenience of describing the present invention and simplifying the description, rather than the device of indication or suggestion meaning or
Element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model
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 at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms 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 connection, is also possible to be electrically connected；It can be directly connected, two can also be can be indirectly connected through an intermediary
The interaction relationship of connection or two elements inside element, unless otherwise restricted clearly.For the common skill of this field
For art personnel, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature is in the second feature " on " or " down "
It can be that the first and second features directly contact or the first and second features are by intermediary mediate contact.Moreover, first is special
Sign can be fisrt feature above the second feature " above ", " above " and " above " and be directly above or diagonally above the second feature, or only
Indicate that first feature horizontal height is higher than second feature.Fisrt feature under the second feature " below ", " below " and " below " can be with
It is that fisrt feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (9)
1. separable type foundation bolt locking device, it is characterised in that: including integrally formed lock arm (1), clamping screw (2) and
Nut (3)；The lock arm (1) includes semi-annular shape threaded joints (11) and side interconnecting piece (12)；The threaded connection
The both ends of the annular structure in portion (11) are respectively equipped with outwardly extending side interconnecting piece (12)；Two lock arms (1)
The opening of annular structure is oppositely arranged；The stud of the clamping screw (2) longitudinally sequentially passes through lock arm described in wherein side
(1) the through-hole (121) on side interconnecting piece (12), and on the side interconnecting piece (12) of lock arm described in the other side (1)
Internal thread hole (122) is threadedly coupled；The nut (3) is threadedly coupled with the outer end of the stud of the clamping screw (2)；It is additionally provided with
Anti-theft screw (4) tilts the outer end for being threaded through the clamping screw (2), to realize the abutting limit to the nut (3).
2. separable type foundation bolt locking device according to claim 1, it is characterised in that: be additionally provided with reinforcing rib (7)；Institute
State being fixedly connected respectively with the threaded joints (11) and side interconnecting piece (12) for reinforcing rib (7)；And the reinforcing rib (7)
It is located at the transition junction of the threaded joints (11) and side interconnecting piece (12).
3. separable type foundation bolt locking device according to claim 1, it is characterised in that: the side interconnecting piece (12)
On along short transverse set there are two spacing setting clamping screw (2).
4. separable type foundation bolt locking device according to claim 1, it is characterised in that: on the anti-theft screw (4)
Equipped with tilted perforations (21) matched screw connection structure on the clamping screw (2).
5. separable type foundation bolt locking device according to claim 1, it is characterised in that: anti-theft screw (4) packet
Include top clamping portion (41) and stud portion (42)；The clamping portion (41) includes that the gear of intermediate clamping groove (411) and side connects
Raised (412)；The width direction two sides of the clamping groove (411) are respectively equipped with gear and connect raised (412)；The gear connects protrusion
(412) one end is the lug boss upwardly extended, and the other end is the recessed portion gradually extended downwards.
6. separable type foundation bolt locking device according to claim 5, it is characterised in that: outside the clamping portion (41)
All sizes are less than or equal to the peripheral dimension of the stud portion (42).
7. separable type foundation bolt locking device according to claim 1, it is characterised in that: the threaded joints (11)
Internal screw thread be located on inner sidewall, and be threadedly coupled with foundation bolt (5).
8. separable type foundation bolt locking device according to claim 1, it is characterised in that: two side interconnecting pieces
(12) spacing is 4-6mm.
9. separable type foundation bolt locking device according to claim 1, it is characterised in that: the clamping screw (2)
Screw thread is external thread structure on stud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821383695.6U CN208651387U (en) | 2018-08-24 | 2018-08-24 | Separable type foundation bolt locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821383695.6U CN208651387U (en) | 2018-08-24 | 2018-08-24 | Separable type foundation bolt locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208651387U true CN208651387U (en) | 2019-03-26 |
Family
ID=65791554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821383695.6U Active CN208651387U (en) | 2018-08-24 | 2018-08-24 | Separable type foundation bolt locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208651387U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237321A (en) * | 2019-12-18 | 2020-06-05 | 深圳巴斯巴科技发展有限公司 | Disassembly-free structure for fixing functional screws |
| CN113511557A (en) * | 2020-04-09 | 2021-10-19 | 大连金鼎石油化工机器有限公司 | Method for replacing wire winding machine of winding shaft |
-
2018
- 2018-08-24 CN CN201821383695.6U patent/CN208651387U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237321A (en) * | 2019-12-18 | 2020-06-05 | 深圳巴斯巴科技发展有限公司 | Disassembly-free structure for fixing functional screws |
| CN113511557A (en) * | 2020-04-09 | 2021-10-19 | 大连金鼎石油化工机器有限公司 | Method for replacing wire winding machine of winding shaft |
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