CN208339948U - Rigid guideway external clamping type fall-preventing protection device - Google Patents
Rigid guideway external clamping type fall-preventing protection device Download PDFInfo
- Publication number
- CN208339948U CN208339948U CN201820698949.7U CN201820698949U CN208339948U CN 208339948 U CN208339948 U CN 208339948U CN 201820698949 U CN201820698949 U CN 201820698949U CN 208339948 U CN208339948 U CN 208339948U
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- Prior art keywords
- frame body
- structure frame
- protection device
- preventing protection
- clamping type
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- 125000006850 spacer group Chemical group 0.000 claims abstract description 30
- 238000005194 fractionation Methods 0.000 claims description 6
- 210000001015 abdomen Anatomy 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 206010057071 Rectal tenesmus Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004826 seaming Methods 0.000 description 2
- 208000012271 tenesmus Diseases 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Abstract
The utility model relates to fall-preventing protection device technical fields; more particularly, to a kind of rigid guideway external clamping type fall-preventing protection device; it is high to solve the problems, such as that anti-fall device in the prior art limits guide rail requirement; the utility model includes structure frame body, splits connecting shaft, counnter attack spacer pin, eccentric wheel and tension spring; counnter attack spacer pin meeting clamping lock in anti-dress splits connecting shaft; cause it that can not split; in this way in the case where not influencing guide rail; anti-reverse mounting function is realized, solves the problems, such as to limit guide rail requirement high.
Description
Technical field
The utility model relates to anti-fall device technical fields, fill more particularly, to a kind of rigid guideway external clamping type anti-falling protection
It sets.
Background technique
In the prior art, guide rail anti-fall device is the safety protection equipment of a kind of high altitude operation personnel or equipment, works as high-altitude
When accidental falling occurs for operating personnel or equipment, guide rail anti-fall device can be locked on guide rail immediately, prevent high altitude operation personnel
Or equipment continues to drop, to play a protective role.
Guide rail anti-fall device in the prior art is slidingtype, i.e., guide rail anti-fall device and guide rail constitute prismatic pair, is led
It is slided up and down with high altitude operation personnel or equipment along guide rail in rail anti-fall device use process, but during sliding down,
It especially is easy Caton in adjacent rails seaming position anti-fall device, because mobile friction force in the prior art is larger, in phase
Adjacent guide rail seaming position frictional resistance is bigger, and anti-fall device self gravity is caused frictional force cannot to be overcome to glide, and in turn results in anti-
Fall device mistake locking needs to stop to creep, can just work on after unlocking anti-fall device, influence working efficiency, anti-fall device
Job stability it is poor.
In addition to this, the anti-reverse mounting measure of anti-fall device in the prior art is that the contact surface of guide rail and anti-fall device is set
It is set to cascaded surface, makes the convex surface of guide rail and the concave surface alignment of anti-fall device, and the center of guide rail cannot be arranged in the convex surface of guide rail,
Just can guarantee that anti-fall device is counter in this way can not assemble when filling with guide rail, this is also resulted in guide rail installation process it should be noted that protrusion
Facing towards high to guide rail requirement limitation, if guide rail is also the guide rail of lifting device, this has also resulted in guide rail and lifting
Equipment unbalance stress, influences job stability.
In conclusion the guide rail anti-fall device of the prior art requires limitation height to ask there are the operation is stable difference and to guide rail
Topic.
The information disclosed in the background technology section is intended only to deepen the understanding to the utility model general background technology,
And it is not construed as recognizing or implying in any form that the information constitutes the prior art known in those skilled in the art.
Utility model content
The purpose of this utility model is to provide a kind of rigid guideway external clamping type fall-preventing protection devices, to alleviate the prior art
Guide rail anti-fall device there are poor work stability and guide rail is required to limit high problem.
To solve the above problems, the utility model the following technical schemes are provided:
A kind of rigid guideway external clamping type fall-preventing protection device, which is characterized in that including structure frame body, split connecting shaft, anti-
Anti- spacer pin, eccentric wheel and tension spring；
The structure frame body includes first structure frame body and the second structure frame body, the first structure frame body and described second
Structure frame body by the fractionation connect axis connection, the first structure frame body along it is described split connecting shaft extending direction, to
Close to or far from the direction movement of the second structure frame body；
The second structure frame body is equipped with mounting hole, and the circumferential wall for splitting connecting shaft is equipped with groove, the counnter attack limit
Position pin is set in the mounting hole, and when the mounting hole be connected to the groove, and the mounting hole is positioned at the groove top
When, the counnter attack spacer pin is inserted into the mounting hole and the groove simultaneously, when the mounting hole is located at the lower section of the groove,
The counnter attack pin shaft is located in the mounting hole；
The eccentric wheel is installed on the holding frame structural body by connecting shaft, and can turn around the axial line of the connecting shaft
It is dynamic, when the eccentric wheel turns to clamping lock pose, clamping lock state can be formed with guide rail；
The tension spring is connect with the eccentric wheel and the structure frame body respectively, and the tension spring is for adjusting the eccentric wheel
Rotation pose.
Further,
The counnter attack spacer pin includes the first diameter section and the second diameter section, and the first diameter section and the second diameter section integrally connect
It connects, the diameter of the first diameter section is less than the diameter of the second diameter section.
Further,
The mounting hole is set as stepped hole, and the stepped hole is for installing the counnter attack spacer pin, and the stepped hole
Hole diameter is greater than the diameter of the first diameter section, and less than the diameter of the second diameter section, and the small hole depth of the stepped hole is less than institute
The length of the first diameter section is stated, the big hole depth of stepped hole is greater than the length of the counnter attack spacer pin.
Further,
The structure frame body also sets up nose end baffle, and the nose end baffle is for covering the stepped hole.
Further,
The rigid guideway external clamping type fall-preventing protection device further includes guide roller, and the guide roller is connected to the knot
Framework body, and and guide rail contact.
Further,
The guide roller is mounted on the first structure frame body and the second structure frame body, and on same axial line,
And it can be rolled along the extending direction of the guide rail.
Further,
The eccentric wheel includes front and rear, and the front and the rear portion are integrated connection, and the rear portion is provided with
Through-hole connects user of service when for using or lifting device, the front is provided with axis hole, for accommodating the connecting shaft.
Further,
The front shape is set as L shape, and the back surface corner of the front is set as circular arc camber, and the circle
Arc surface and the same axial line of the axis hole.
Further,
Spring eye is arranged in the abdomen face of the front, and the spring eye is for installing the tension spring.
Further,
The contact surface of the eccentric wheel and the guide rail is provided with friction screw thread, for increasing the eccentric wheel and described leading
Frictional force between rail.
In conjunction with above technical scheme, the utility model bring beneficial effect is analyzed as follows:
In use, when the utility model is correctly installed, since counnter attack spacer pin is under the gravity of itself, meeting
It is withdrawn in logical mounting hole completely, does not influence fractionation connecting shaft and normally assemble function；When reversely installation the utility model, counnter attack limit
Position pin will lead to stretching through-hole under self gravitation effect, penetrate in the groove for splitting connecting shaft, cause fractionation connecting shaft can not
Normal assembling first structure frame body and the second structure frame body realize anti-reverse mounting in this way in the case where not influencing the guide rail
It is high to solve the problems, such as that the prior art limits guide rail requirement for function.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages are illustrating
Structure specifically noted by book, claims and attached drawing is achieved and obtained.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is rigid guideway external clamping type fall-preventing protection device main view provided by the embodiment of the utility model；
Fig. 2 is rigid guideway external clamping type fall-preventing protection device left view provided by the embodiment of the utility model；
Fig. 3 is rigid guideway external clamping type fall-preventing protection device cross-sectional view provided by the embodiment of the utility model；
Fig. 4 is rigid guideway external clamping type fall-preventing protection device formal dress state counnter attack provided by the embodiment of the utility model limit
Sell partial sectional view；
Fig. 5, which is that rigid guideway external clamping type fall-preventing protection device provided by the embodiment of the utility model is counter, fills state counnter attack limit
Sell partial sectional view；
Fig. 6 is rigid guideway external clamping type fall-preventing protection device clamping lock status diagram provided by the embodiment of the utility model；
Fig. 7 is rigid guideway external clamping type fall-preventing protection device working state schematic representation provided by the embodiment of the utility model；
Fig. 8 is that the counnter attack of rigid guideway external clamping type fall-preventing protection device provided by the embodiment of the utility model limits latch structure
Schematic diagram.
Icon: 100- eccentric wheel；110- guide roller；120- connecting shaft；130- structure frame body；200- through-hole；
210- axis hole；220- friction screw thread；230- spring eye；300- groove；310- counnter attack spacer pin；320- splits connection
Axis；400- the first diameter section；410- the second diameter section；500- tension spring.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Embodiment 1 is described in detail with reference to the accompanying drawing:
Embodiment 1
As Fig. 1 rigid guideway external clamping type fall-preventing protection device main view provided by the embodiment of the utility model, Fig. 2 sheet are practical
Rigid guideway external clamping type fall-preventing protection device left view, Fig. 3 of new embodiment offer are provided by the embodiment of the utility model just
Property guide rail external clamping type fall-preventing protection device cross-sectional view and Fig. 6 anti-fall guarantor of rigid guideway external clamping type provided by the embodiment of the utility model
Shown in protection unit clamping lock status diagram:
A kind of rigid guideway external clamping type fall-preventing protection device, it is characterised in that: including structure frame body 130, split connecting shaft
320, counnter attack spacer pin 310, eccentric wheel 100 and tension spring 500；
Structure frame body 130 includes first structure frame body and the second structure frame body, first structure frame body and the second structure frame body
It is connected by splitting connecting shaft 320, first structure frame body is along the extending direction for splitting connecting shaft 320, to close to or far from second
The direction of structure frame body moves；
Second structure frame body is equipped with mounting hole, and the circumferential wall for splitting connecting shaft 320 is equipped with groove 300, counnter attack spacer pin 310
In mounting hole, when mounting hole is connected to groove 300, and mounting hole is located at 300 top of groove, counnter attack spacer pin 310 is same
When insertion mounting hole and groove 300, when mounting hole is located at the lower section of groove 300, counnter attack spacer pin 310 is located in mounting hole；
Eccentric wheel 100 is installed on structure frame body 130 by connecting shaft 120, and can rotate around the axial line of connecting shaft 120,
When eccentric wheel 100 turns to clamping lock pose, clamping lock state can be formed with guide rail；
Tension spring 500 is connect with eccentric wheel 100 and structure frame body 130 respectively, and tension spring 500 is used to adjust turning for eccentric wheel 100
Dynamic pose.
Such as Fig. 4 rigid guideway external clamping type fall-preventing protection device formal dress state counnter attack limit provided by the embodiment of the utility model
It sells shown in partial sectional view:
When correctly installation the utility model, since counnter attack spacer pin 310 is under the gravity of itself, can withdraw completely
In mounting hole, do not influence to split the normal assembling function of connecting shaft 320；
State counnter attack limit is filled as Fig. 5 rigid guideway external clamping type fall-preventing protection device provided by the embodiment of the utility model is counter
It sells shown in partial sectional view:
When reversely installation the utility model, counnter attack spacer pin 310 will lead to stretching mounting hole under self gravitation effect,
It penetrates in the groove 300 for splitting connecting shaft 320, causes fractionation connecting shaft 320 that can not normally assemble first structure frame body and second
Structure frame body realizes anti-reverse mounting function in this way in the case where not influencing guide rail, solves the prior art and limits guide rail requirement
Make high problem.
Such as Fig. 6 rigid guideway external clamping type fall-preventing protection device clamping lock status diagram institute provided by the embodiment of the utility model
Show: when the utility model is in no external force, the automatic impaction guide rail under 500 pulling force effect of tension spring of eccentric wheel 100 makes this reality
Lockup state is in novel；
Such as Fig. 7 rigid guideway external clamping type fall-preventing protection device working state schematic representation institute provided by the embodiment of the utility model
Show: user of service or lift truck are connected to the top of the utility model by flexible connecting member, when personnel or lift truck normally transport
When row, by upward pulling force, the pulling force for making eccentric wheel 100 overcome tension spring 500 rotates by a certain angle the utility model, releases lock
Only state move the utility model can on guide rail with personnel or lift truck；
When there is fortuitous event, when tenesmus occurs to accelerate for user of service or lift truck, no longer due to weightless flexible connecting member
Upward pulling force is provided the utility model, and 500 pulling force of tension spring makes eccentric wheel 100 compress guide rail and enters lockup state, and works as
When user of service or lift truck tenesmus are to the lower section of the utility model, the utility model is by downward pulling force, downward pulling force
Eccentric wheel 100 can be made further to compress guide rail, lock anti-fall purpose to play.
In the optinal plan of the present embodiment, more preferably,
Counnter attack spacer pin 310 includes the first diameter section 400 and the second diameter section 410, the first diameter section 400 and the second diameter section 410 1
Body connection, the diameter of the diameter of the first diameter section 400 less than the second diameter section 410.Such as Fig. 4 the utility model embodiment counnter attack spacer pin
Shown in broken section: being to guarantee counnter attack spacer pin 310 in anti-dress in this way, energy block guarantees counnter attack limit in stepped hole
The job stability of pin 310.
In the optinal plan of the present embodiment, more preferably,
Mounting hole is set as stepped hole, and stepped hole is for installing counnter attack spacer pin 310, and stepped hole hole diameter is greater than the
The diameter of one diameter section 400, less than the diameter of the second diameter section 410, and the small hole depth of stepped hole is less than the length of the first diameter section 400,
The big hole depth of stepped hole is greater than the length of counnter attack spacer pin 310.
Stepped hole hole diameter is greater than the diameter of the first diameter section 400, and less than the diameter of the second diameter section 410, and stepped hole is small
Hole depth less than the length of the first diameter section 400, be in this way in order to guarantee counnter attack spacer pin 310 in anti-dress, 400 energy of the first diameter section
By and stretch out stepped hole aperture and the second diameter section 410 is by stepped hole aperture block, play anti-reverse mounting effect；The big hole depth of stepped hole
Degree is greater than the length of counnter attack spacer pin 310, is to guarantee that counnter attack spacer pin 310 in formal dress, can be fully accommodated in rank in this way
In terraced hole.
In the optinal plan of the present embodiment, more preferably,
Structure frame body 130 also sets up nose end baffle, and nose end baffle is for covering stepped hole.Nose end baffle can be limited in counnter attack
After pin 310 is installed in stepped hole, it is welded to the big hole end surface of stepped hole, prevents counnter attack spacer pin 310 from falling out of stepped hole.
In the optinal plan of the present embodiment, more preferably,
Rigid guideway external clamping type fall-preventing protection device further includes guide roller 110, and guide roller 110 is connected to structure frame body
130, and and guide rail contact.
In the optinal plan of the present embodiment, more preferably,
Guide roller 110 is mounted on first structure frame body and the second structure frame body, and on same axial line, and can be along institute
The extending direction for stating guide rail rolls.
Guide roller 110 makes to be sliding friction between the utility model rigid guideway external clamping type fall-preventing protection device and guide rail,
Guide rail anti-fall device in the prior art is solved when gliding, mobile friction force is larger, especially in adjacent rails seam
Position frictional resistance is bigger, and anti-fall device self gravity is caused frictional force cannot to be overcome to glide, and in turn results in anti-fall device mistake
The problem of locking, improves job stability.
In the optinal plan of the present embodiment, more preferably,
Eccentric wheel 100 includes front and rear, and front and rear is integrated connection, and rear portion is provided with through-hole 200, for making
Used time connection user of service or lifting device, front are provided with axis hole 210, for accommodating connecting shaft 120.
In the optinal plan of the present embodiment, more preferably,
As the counnter attack of Fig. 8 rigid guideway external clamping type fall-preventing protection device provided by the embodiment of the utility model limits latch structure
Shown in schematic diagram: front shape is set as L shape, and the back surface corner of front is set as circular arc camber, and circular arc camber with
The same axial line of axis hole 210 is to guarantee that eccentric wheel 100 can be rotated normally around 120 axial line of connecting shaft in this way.
In the optinal plan of the present embodiment, more preferably,
Spring eye 230 is arranged in the abdomen face of front, and spring eye 230 is for installing tension spring 500.
In the optinal plan of the present embodiment, more preferably,
As the counnter attack of Fig. 8 rigid guideway external clamping type fall-preventing protection device provided by the embodiment of the utility model limits latch structure
Shown in schematic diagram: the contact surface of eccentric wheel 100 and guide rail is provided with friction screw thread 220, for increasing between eccentric wheel 100 and guide rail
Frictional force.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of rigid guideway external clamping type fall-preventing protection device, it is characterised in that: including structure frame body (130), split connecting shaft
(320), counnter attack spacer pin (310), eccentric wheel (100) and tension spring (500)；
The structure frame body (130) includes first structure frame body and the second structure frame body, the first structure frame body and described
Two structure frame bodies are connected by the fractionation connecting shaft (320), and the first structure frame body is along fractionation connecting shaft (320)
Extending direction is moved to the direction close to or far from the second structure frame body；
The second structure frame body is equipped with mounting hole, and the circumferential wall for splitting connecting shaft (320) is equipped with groove (300), described
Counnter attack spacer pin (310) is set in the mounting hole, when the mounting hole is connected to the groove (300), and the mounting hole
When above the groove (300), the counnter attack spacer pin (310) is inserted into the mounting hole and the groove (300) simultaneously,
When the mounting hole is located at the lower section of the groove (300), the counnter attack spacer pin (310) is located in the mounting hole；
The eccentric wheel (100) is installed on the structure frame body by connecting shaft (120), and can be around the connecting shaft (120)
Axial line rotation when the eccentric wheel (100) turns to clamping lock pose, can form clamping lock state with guide rail；
The tension spring (500) connect with the eccentric wheel (100) and the structure frame body (130) respectively, and the tension spring (500) is used
In the rotation pose for adjusting the eccentric wheel (100).
2. rigid guideway external clamping type fall-preventing protection device according to claim 1, it is characterised in that: the counnter attack spacer pin
It (310) include the first diameter section (400) and the second diameter section (410), the first diameter section (400) and the second diameter section (410) one
Body connection, the diameter of the first diameter section (400) are less than the diameter of the second diameter section (410).
3. rigid guideway external clamping type fall-preventing protection device according to claim 2, it is characterised in that: the mounting hole setting
For stepped hole, the stepped hole is for installing the counnter attack spacer pin (310), and the stepped hole hole diameter is greater than described the
The diameter of one diameter section (400), less than the diameter of the second diameter section (410), and the small hole depth of the stepped hole is less than first diameter
The length of section (400), the big hole depth of stepped hole are greater than the length of the counnter attack spacer pin (310).
4. rigid guideway external clamping type fall-preventing protection device according to claim 3, it is characterised in that: the structure frame body
(130) nose end baffle is also set up, the nose end baffle is for covering the stepped hole.
5. rigid guideway external clamping type fall-preventing protection device according to claim 4, it is characterised in that: outside the rigid guideway
Cassette fall-preventing protection device further includes guide roller (110), and the guide roller (110) is connected to the structure frame body (130),
And and guide rail contact.
6. rigid guideway external clamping type fall-preventing protection device according to claim 5, it is characterised in that: the guide roller
(110) it is mounted on the first structure frame body and the second structure frame body, and on same axial line, and can be along the guide rail
Extending direction roll.
7. according to rigid guideway external clamping type fall-preventing protection device described in claim 1, it is characterised in that: the eccentric wheel (100)
Including front and rear, the front and the rear portion are integrated connection, and the rear portion is provided with through-hole (200), for using
When connection user of service or lifting device, the front be provided with axis hole (210), for accommodating the connecting shaft (120).
8. rigid guideway external clamping type fall-preventing protection device according to claim 7, it is characterised in that: the front shape is set
It is set to L shape, the back surface corner of the front is set as circular arc camber, and the circular arc camber and the axis hole (210)
Same axial line.
9. rigid guideway external clamping type fall-preventing protection device according to claim 7, it is characterised in that: the abdomen of the front
Spring eye (230) are arranged in face, and the spring eye (230) is for installing the tension spring (500).
10. rigid guideway external clamping type fall-preventing protection device according to claim 1, it is characterised in that: the eccentric wheel
(100) friction screw thread (220) is provided with the contact surface of the guide rail, for increasing the eccentric wheel (100) and the guide rail
Between frictional force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820698949.7U CN208339948U (en) | 2018-05-10 | 2018-05-10 | Rigid guideway external clamping type fall-preventing protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820698949.7U CN208339948U (en) | 2018-05-10 | 2018-05-10 | Rigid guideway external clamping type fall-preventing protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208339948U true CN208339948U (en) | 2019-01-08 |
Family
ID=64888930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820698949.7U Expired - Fee Related CN208339948U (en) | 2018-05-10 | 2018-05-10 | Rigid guideway external clamping type fall-preventing protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208339948U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110215627A (en) * | 2019-06-12 | 2019-09-10 | 北京国网富达科技发展有限责任公司 | A kind of fall arrest track self-locking device |
-
2018
- 2018-05-10 CN CN201820698949.7U patent/CN208339948U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110215627A (en) * | 2019-06-12 | 2019-09-10 | 北京国网富达科技发展有限责任公司 | A kind of fall arrest track self-locking device |
| WO2020249022A1 (en) * | 2019-06-12 | 2020-12-17 | 北京国网富达科技发展有限责任公司 | Self-locking device for anti-falling rail |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |