CN201703934U - Centrifugal fling block type speed-limiting anti-falling safety device - Google Patents
Centrifugal fling block type speed-limiting anti-falling safety device Download PDFInfo
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- CN201703934U CN201703934U CN2010202093027U CN201020209302U CN201703934U CN 201703934 U CN201703934 U CN 201703934U CN 2010202093027 U CN2010202093027 U CN 2010202093027U CN 201020209302 U CN201020209302 U CN 201020209302U CN 201703934 U CN201703934 U CN 201703934U
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Abstract
A centrifugal fling block type speed-limiting anti-falling safety device comprises a speed sensing mechanism, a trigger mechanism, a speed limiting mechanism and wrench bodies; a driving wheel in the speed sensing mechanism is connected with a fling block No. 1 and a fling block No. 2 in the trigger mechanism through a driving shaft; the trigger mechanism is connected with the speed limiting mechanism through an interlinkage; a connecting rod, an adjusting rod and a driving block are arranged between the fling block No. 1 and the fling block No. 2; a groove is formed on a centrifugal shell chassis; the other end of an inserted pin rod in the interlinkage is matched with a rod notch and a sleeve notch in the speed limiting mechanism; a clutch sleeve is arranged on the bracket between a left wrench body and a right wrench body in the speed limiting mechanism; a clutch rod penetrates in the clutch sleeve; the lower end of the clutch rod is fixedly connected with the bottom ends of a left wrench block and a right wrench block which are symmetrically arranged; and a clutch spring is sleeved between the top end of the clutch rod and the clutch sleeve. The utility model not only can effectively avoid accidents, but also has the advantages of simple structure, lower manufacturing cost, strong durability, higher safety and extensive application.
Description
Technical field
The utility model relates to a kind of anti-falling safety device, relates in particular to a kind of centrifugal block for clutch use formula speed limit anti-falling safety device, specifically is applicable to the safety guard-safeguard of elevator craning cage.
Background technology
The present building hoist that uses, drawing cage by steel rope, gear or tooth bar makes vertical lifting transport mostly, in construction work usually because the slip teeth of wire cable rupture or gear, tooth bar and accidents caused, in order to guarantee workmen's safety, must on elevator, be furnished with anti-falling safety device.
The Chinese patent Granted publication number is CN201261670Y, and Granted publication day is that the utility model patent on June 24th, 2009 discloses a kind of safety tongs with speed limit and fall arrest function, belongs to the safety device that elevator craning cage is used.It comprises guide roller, power wheel, steel rope, limit switch, casing, be provided with in its casing: a velocity pick-up mechanism, one is triggered driving device and an elastic locking mechanism, from with track rolling touch and frictional transmission obtain information and the power that hypervelocity is fallen, drive centrifugal shell by throwing piece, the pulling steel rope triggers button and the work of top punching press spring of pulling, by the pincers piece, realize elastomeric stepped form stop locking at transiting slide plate and tilt pincers seat and interorbital.Though this safety tongs device can carry out safety guard-safeguard automatically, effectively support equipment and workmen's personal safety, its structure more complicated, manufacturing cost are higher, and operate loaded down with trivial detailsly, easy to wear, and safety is not high.
Summary of the invention
The purpose of this utility model is to overcome defective and the problem that the structure that exists in the prior art is complicated, manufacturing cost is higher, easy to wear, safety is not high, and a kind of simple in structure, manufacturing cost is lower, durability is strong, safety is higher centrifugal block for clutch use formula speed limit anti-falling safety device is provided.
For realizing above purpose, technical solution of the present utility model is: a kind of centrifugal block for clutch use formula speed limit anti-falling safety device, comprise velocity pick-up mechanism, trigger mechanism and speed limiting mechanism, described velocity pick-up mechanism comprises power wheel support and the inner power wheel that is provided with thereof, the axle center of power wheel is located to run through to be provided with transmission shaft, the other end of transmission shaft is set with trigger mechanism, and trigger mechanism is connected with speed limiting mechanism by linkage;
Described trigger mechanism comprises that centrifugal shell and inner No. of being provided with thereof gets rid of piece and get rid of piece No. two, an end that gets rid of piece for No. one by connecting rod with get rid of piece No. two and be connected, the other end that gets rid of piece for No. two is connected with the other end that gets rid of piece for No. by adjust bar, get rid of piece No. one, get rid of for No. two and be positioned at connecting rod on the piece, position between the adjust bar interconnects by drive block, the axle center of drive block is located to run through to be provided with transmission shaft, be set with centrifugal shell chassis on the transmission shaft, centrifugal shell chassis is provided with and gets rid of piece No. one, get rid of the corresponding groove of piece for No. two, groove and get rid of piece No. one, get rid of for No. two and be provided with stop bar between the piece, one end of stop bar and get rid of piece No. one, get rid of the piece captive joint No. two, the other end extends to the recess of groove;
Described centrifugal shell is provided with hangers, and hangers is connected with speed limiting mechanism by linkage.
Describedly get rid of piece No. one, get rid of piece No. two and be the half moon structure, groove is that conter clockwise four angular convolutions revolve structure.
Describedly get rid of piece No. one, get rid of on the adjust bar that is provided with on the piece for No. two and be set with spring, an end of spring is captiveed joint with an end of adjust bar, and the other end is connected with setting nut, and setting nut is sleeved on the adjust bar.
Described linkage comprises bonded assembly trace, eccentric rod and strut bar successively, and the other end of strut bar is connected with bolt rod, and the other end of bolt rod is connected with speed limiting mechanism.
Described speed limiting mechanism comprises trip(ping) lever and symmetrically arranged left caliper, right caliper body, left caliper, right caliper body are captiveed joint with support, position on the support between left caliper, right caliper body is provided with clutch cover, and clutch cover is provided with the cover breach, and the cover breach inserts with the other end of bolt rod and cooperates;
The inside of described clutch cover is run through and is provided with trip(ping) lever, captive joint with the bottom of symmetrically arranged left side pincers piece, right pincers piece in the lower end of trip(ping) lever, the upper end extends to a side of centrifugal shell, the middle part is provided with and overlaps the corresponding rod notch of breach, the top is provided with to protect and emits, rod notch is positioned at the inside of clutch cover, clutch cover and protect on the trip(ping) lever between emitting and be set with the clutch spring;
Described left side pincers piece, right pincers piece cooperate with the inner slide of left caliper, right caliper body respectively, and left side pincers piece is meshing with each other with right pincers piece.
The symmetric line of described left caliper, right caliper body is a trip(ping) lever, and the symmetric line of left side pincers piece, right pincers piece is a trip(ping) lever, and the angle of the extended line of left caliper, right caliper body is an acute angle.
Compared with prior art, the beneficial effects of the utility model are:
1. owing to comprise velocity pick-up mechanism successively in a kind of centrifugal block for clutch use formula of the utility model speed limit anti-falling safety device; trigger mechanism; linkage and speed limiting mechanism; in the use; when elevator craning cage falls; getting rid of piece by velocity pick-up mechanism by the transmission shaft drive gets rid of outward; drive centrifugal shell rotation by getting rid of piece by groove again; thereby remove the screens of bolt rod to trip(ping) lever by linkage; trip(ping) lever pops up under the effect of clutch spring; the left side pincers piece that drives in the speed limiting mechanism clamps piece along left caliper with the right side; right caliper body upwards slides; and be meshing with each other to clamp the elevator angle bar of landing by left side pincers piece and right pincers piece; thereby play the effect of speed limit fall arrest; not only can effectively avoid the generation of accident; protection property and personal safety; and unattended operation; operate simple and easy; the speed that prevention is fallen is very fast, and fall arrest is effective.Therefore the utility model not only can effectively be avoided the generation of accident, and operates simple and easy, good braking effect.
2. owing to the trigger mechanism in a kind of centrifugal block for clutch use formula of the utility model speed limit anti-falling safety device is connected with speed limiting mechanism by linkage, linkage is made of trace, eccentric rod, strut bar and bolt rod, match with cover breach, rod notch in the speed limiting mechanism to control left side pincers piece and right pincers piece by bolt rod again, integral structure is fairly simple, and there is not a member easy to wear, as rope etc., not only reduced manufacturing cost, and be swift in response, safety is stronger, and is simultaneously also more durable.Therefore manufacturing cost of the present utility model is lower, durability is strong, safety is higher.
Since the trigger mechanism in a kind of centrifugal block for clutch use formula of the utility model speed limit anti-falling safety device drive centrifugal shell linkage driven by centrifugal outer the getting rid of of getting rid of piece, therefore the centrifugal outer rotative speed that gets rid of power wheel in condition and the velocity pick-up mechanism that gets rid of piece is proportional, and under the different applied environments, the rotative speed of power wheel is discrepant, in order to adapt to different applied environments, the utility model gets rid of piece and is provided with adjust bar, can get rid of the centrifugal outer condition of getting rid of of piece by the suppression degree setting of adjusting the adjust bar upper spring, thereby adapt to different applied environments, enlarge field of application.Therefore Applicable scope of the present utility model is wider, is suitable for as elevator the anti-falling safety device of vertical lifting mechanisms such as elevator.
Description of drawings
Fig. 1 is a front view of the present utility model;
Fig. 2 is a birds-eye view of the present utility model;
Fig. 3 is the structural representation of trigger mechanism among Fig. 1;
Fig. 4 is a left side pincers piece and the right birds-eye view that clamps piece among Fig. 1.
Among the figure: velocity pick-up mechanism 1, trigger mechanism 2, centrifugal shell 21, hangers 211, get rid of piece for No. one and get rid of piece 23 22, No. two, connecting rod 24, adjust bar 25, spring 251, setting nut 252, drive block 26, centrifugal shell chassis 27, groove 28, stop bar 29, speed limiting mechanism 3, trip(ping) lever 31, rod notch 311, left caliper 32, right caliper body 33, clutch cover 34, cover breach 341, left side pincers piece 35, right pincers piece 36, protect and emit 37, clutch spring 38, linkage 4, trace 41, eccentric rod 42, strut bar 43, bolt rod 44, power wheel support 5, power wheel 6, transmission shaft 7, support 8, elevator angle bar 9.
The specific embodiment
Below in conjunction with the description of drawings and the specific embodiment the utility model is described in further detail.
Referring to Fig. 1-Fig. 4, a kind of centrifugal block for clutch use formula speed limit anti-falling safety device, comprise velocity pick-up mechanism 1, trigger mechanism 2 and speed limiting mechanism 3, described velocity pick-up mechanism 1 comprises power wheel support 5 and the inner power wheel 6 that is provided with thereof, the axle center of power wheel 6 is located to run through to be provided with transmission shaft 7, the other end of transmission shaft 7 is set with trigger mechanism 2, and trigger mechanism 2 is connected with speed limiting mechanism 3 by linkage 4;
Described trigger mechanism 2 comprises that centrifugal shell 21 and inner No. of being provided with thereof gets rid of piece 22 and get rid of piece 23 No. two, an end that gets rid of piece 22 for No. one by connecting rod 24 with get rid of piece 23 No. two and be connected, the other end that gets rid of piece 23 for No. two is connected with the other end that gets rid of piece 22 for No. by adjust bar 25, get rid of piece 22 No. one, get rid of for No. two and be positioned at connecting rod 24 on the piece 23, position between the adjust bar 25 interconnects by drive block 26, the axle center of drive block 26 is located to run through to be provided with transmission shaft 7, be set with centrifugal shell chassis 27 on the transmission shaft 7, centrifugal shell chassis 27 is provided with and gets rid of piece 22 No. one, get rid of piece 23 corresponding grooves 28 for No. two, groove 28 and get rid of piece 22 No. one, get rid of for No. two and be provided with stop bar 29 between the piece 23, one end of stop bar 29 and get rid of piece 22 No. one, get rid of piece 23 captive joints for No. two, the other end extends to the recess of groove 28;
Described centrifugal shell 21 is provided with hangers 211, and hangers 211 is connected with speed limiting mechanism 3 by linkage 4.
Describedly get rid of piece 22 for No. one, get rid of piece 23 No. two and be the half moon structure, groove 28 revolves structure for conter clockwise four angular convolutions.
Describedly get rid of piece 22 for No. one, get rid of on the adjust bar 25 that is provided with on the piece 23 for No. two and be set with spring 251, an end of spring 251 is captiveed joint with an end of adjust bar 25, and the other end is connected with setting nut 252, and setting nut 252 is sleeved on the adjust bar 25.
Described linkage 4 comprises bonded assembly trace 41, eccentric rod 42 and strut bar 43 successively, and the other end of strut bar 43 is connected with bolt rod 44, and the other end of bolt rod 44 is connected with speed limiting mechanism 3.
Described speed limiting mechanism 3 comprises trip(ping) lever 31 and symmetrically arranged left caliper 32, right caliper body 33, left caliper 32, right caliper body 33 are captiveed joint with support 8, position on the support 8 between left caliper 32, right caliper body 33 is provided with clutch cover 34, clutch cover 34 is provided with cover breach 341, and cover breach 341 inserts with the other end of bolt rod 44 and cooperates;
The inside of described clutch cover 34 is run through and is provided with trip(ping) lever 31, captive joint with the bottom of symmetrically arranged left side pincers piece 35, right pincers piece 36 in the lower end of trip(ping) lever 31, the upper end extends to a side of centrifugal shell 21, the middle part is provided with and overlaps breach 341 corresponding rod notch 311, the top is provided with to protect and emits 37, rod notch 311 is positioned at the inside of clutch cover 34, clutch cover 34 and protect on the trip(ping) lever 31 that emits between 37 and be set with clutch spring 38;
Described left side pincers piece 35, right pincers piece 36 cooperate with the inner slide of left caliper 32, right caliper body 33 respectively, and left side pincers piece 35 is meshing with each other with right pincers piece 36.
The symmetric line of described left caliper 32, right caliper body 33 is a trip(ping) lever 31, and the symmetric line of left side pincers piece 35, right pincers piece 36 is a trip(ping) lever 31, and the angle of the extended line of left caliper 32, right caliper body 33 is an acute angle.
During use, elder generation is according to the needs of applied environment, method by setting nut 252 compacting springs 251 sets in advance No. one and gets rid of piece 22, get rid of piece 23 centrifugal outer conditions of getting rid of for No. two, to protect then emits 37 to press down, drive in the time of compacting clutch spring 38 that trip(ping) lever 31 moves downward so that rod notch 311 with to overlap breach 341 corresponding, thereby make bolt rod 44 insertion rod breach 311, the trip(ping) lever 31 that moves downward drives left side pincers piece 35, right pincers piece 36 is along left caliper 32, right caliper body 33 in-to-in chutes move downward, and support a big left side gradually and clamp piece 35 and the right distance that clamps between the piece 36, then whole anti-falling safety device is installed on the elevator craning cage, the bottom of elevator angle bar 9 is stuck in the left side pincers piece 35 that has strutted, between the right pincers piece 36, top contacts with a side of power wheel 6, start operation then, in service, relative motion between elevator craning cage and the elevator angle bar 9 drives power wheel 6 rotations, power wheel 6 gets rid of piece 22 by No. one in the transmission shaft 7 drive trigger mechanisms 2, get rid of piece 23 rotations for No. two, centrifugal shell 21 does not rotate, but when elevator craning cage falls, elevator craning cage will glide fast, and can drive power wheel 6 high speed revolutions, power wheel 6 drives No. one and gets rid of piece 22, getting rid of piece 23 for No. two rapidly rotates, produce centnifugal force, and this centnifugal force satisfies the centrifugal outer condition of getting rid of that pressure-formed in advance spring 251 sets, get rid of piece 22 No. one, get rid of piece 23 centrifugal outer getting rid of for No. two, the stop bar 29 that its lower end is provided with blocks groove 28, and by chassis 27 rotations of the centrifugal shell of groove 28 drives, thereby driving centrifugal shell 21 rotates, the trace 41 that centrifugal shell 21 drives in the linkage 4 by hangers 211, eccentric rod 42, strut bar 43 moves successively with bolt rod 44, at last bolt rod 44 is transferred to from rod notch 311, releasing is to the screens of trip(ping) lever 31, trip(ping) lever 31 is upward movement under the bounce of clutch spring 38, and piece 35 is clamped on a left side that drives trip(ping) lever 31 lower ends institute captive joint, right pincers piece 36 is along left caliper 32, move on the right caliper body 33, on move past in the journey left side pincers piece 35 and mesh fast with right pincers piece 36, and clamp and be arranged on left side pincers piece 35, elevator angle bar 9 between the right pincers piece 36, thereby the downslide of restriction elevator craning cage.Through test: the utility model can be within 1.5 meters of elevator craning cage when tenesmus hypervelocity be stopped elevator craning cage and is stopped, satisfying fully stops in elevator craning cage when tenesmus hypervelocity 2 meters scopes stops the code requirement of elevator craning cage, has ensured construction property and workmen's safety.
Therefore the utility model not only can effectively be avoided the generation of accident, and simple in structure, manufacturing cost is lower, durability is strong, safety is higher, Applicable scope is also wider.
Claims (6)
1. centrifugal block for clutch use formula speed limit anti-falling safety device, comprise velocity pick-up mechanism (1), trigger mechanism (2) and speed limiting mechanism (3), described velocity pick-up mechanism (1) comprises power wheel support (5) and the inner power wheel (6) that is provided with thereof, the axle center of power wheel (6) is located to run through to be provided with transmission shaft (7), the other end of transmission shaft (7) is set with trigger mechanism (2), trigger mechanism (2) is connected with speed limiting mechanism (3) by linkage (4), it is characterized in that:
Described trigger mechanism (2) comprises that centrifugal shell (21) and inner No. of being provided with thereof gets rid of piece (22) and get rid of piece (23) with No. two, an end that gets rid of piece (22) for No. one by connecting rod (24) with get rid of piece (23) No. two and be connected, the other end that gets rid of piece (23) for No. two is connected with the other end that gets rid of piece (22) for No. by adjust bar (25), get rid of piece (22) for No. one, get rid of for No. two and be positioned at connecting rod (24) on the piece (23), position between the adjust bar (25) interconnects by drive block (26), the axle center of drive block (26) is located to run through to be provided with transmission shaft (7), be set with centrifugal shell chassis (27) on the transmission shaft (7), centrifugal shell chassis (27) is provided with and gets rid of piece (22) No. one, get rid of the corresponding groove of piece (23) (28) for No. two, groove (28) gets rid of piece (22) with No. one, get rid of for No. two and be provided with stop bar (29) between the piece (23), one end of stop bar (29) and get rid of piece (22) for No. one, get rid of piece (23) captive joint for No. two, the other end extends to the recess of groove (28);
Described centrifugal shell (21) is provided with hangers (211), and hangers (211) is connected with speed limiting mechanism (3) by linkage (4).
2. a kind of centrifugal block for clutch use formula speed limit anti-falling safety device according to claim 1 is characterized in that: describedly get rid of piece (22) No. one, get rid of piece (23) for No. two and be the half moon structure, groove (28) revolves structure for conter clockwise four angular convolutions.
3. a kind of centrifugal block for clutch use formula speed limit anti-falling safety device according to claim 1 and 2, it is characterized in that: describedly get rid of piece (22) No. one, get rid of piece (23) for No. two and go up on the adjust bar (25) that is provided with and be set with spring (251), one end of spring (251) is captiveed joint with an end of adjust bar (25), the other end is connected with setting nut (252), and setting nut (252) is sleeved on the adjust bar (25).
4. a kind of centrifugal block for clutch use formula speed limit anti-falling safety device according to claim 3, it is characterized in that: described linkage (4) comprises bonded assembly trace (41), eccentric rod (42) and strut bar (43) successively, the other end of strut bar (43) is connected with bolt rod (44), and the other end of bolt rod (44) is connected with speed limiting mechanism (3).
5. a kind of centrifugal block for clutch use formula speed limit anti-falling safety device according to claim 4 is characterized in that:
Described speed limiting mechanism (3) comprises trip(ping) lever (31) and symmetrically arranged left caliper (32), right caliper body (33), left caliper (32), right caliper body (33) are captiveed joint with support (8), the position that is positioned on the support (8) between left caliper (32), the right caliper body (33) is provided with clutch cover (34), clutch cover (34) is provided with cover breach (341), and cover breach (341) inserts with the other end of bolt rod (44) and cooperates;
The inside of described clutch cover (34) is run through and is provided with trip(ping) lever (31), captive joint with the bottom of symmetrically arranged left side pincers piece (35), right pincers pieces (36) in the lower end of trip(ping) lever (31), the upper end extends to a side of centrifugal shell (21), the middle part is provided with and overlaps the corresponding rod notch of breach (341) (311), the top is provided with to protect and emits (37), rod notch (311) is positioned at the inside of clutch cover (34), clutch cover (34) and protect on the trip(ping) lever (31) that emits between (37) and be set with clutch spring (38);
Described left side pincers piece (35), right pincers pieces (36) cooperate with the inner slide of left caliper (32), right caliper body (33) respectively, and left side pincers pieces (35) are meshing with each other with right pincers pieces (36).
6. a kind of centrifugal block for clutch use formula speed limit anti-falling safety device according to claim 5, it is characterized in that: the symmetric line of described left caliper (32), right caliper body (33) is trip(ping) lever (31), the symmetric line of left side pincers piece (35), right pincers pieces (36) is trip(ping) lever (31), and the angle of the extended line of left caliper (32), right caliper body (33) is an acute angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202093027U CN201703934U (en) | 2010-05-31 | 2010-05-31 | Centrifugal fling block type speed-limiting anti-falling safety device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202093027U CN201703934U (en) | 2010-05-31 | 2010-05-31 | Centrifugal fling block type speed-limiting anti-falling safety device |
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| Publication Number | Publication Date |
|---|---|
| CN201703934U true CN201703934U (en) | 2011-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202093027U Expired - Fee Related CN201703934U (en) | 2010-05-31 | 2010-05-31 | Centrifugal fling block type speed-limiting anti-falling safety device |
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| CN (1) | CN201703934U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104828668A (en) * | 2015-05-21 | 2015-08-12 | 南通三洋电梯有限责任公司 | Elevator adjusting-type centrifugation speed limiting device |
| CN103818797B (en) * | 2014-03-24 | 2016-01-20 | 袁昭成 | Based on velocity limiter and the safety tongs linked system of elevator |
| CN106517023A (en) * | 2016-12-02 | 2017-03-22 | 河北华桥减速机有限公司 | Safety lock for overhead operating device |
| CN110436302A (en) * | 2018-05-02 | 2019-11-12 | 陕西小溪机电科技有限公司 | A kind of towed elevator car guide rail sure brake system |
| CN110821989A (en) * | 2019-11-11 | 2020-02-21 | 中国电子科技集团公司第三十八研究所 | Anti-falling device of elevator |
| CN111278758A (en) * | 2017-11-16 | 2020-06-12 | 株式会社日立制作所 | Safety device, and elevator equipped with the safety device |
| CN111503175A (en) * | 2020-06-02 | 2020-08-07 | 上海振亿工程机械有限公司 | Hoisting machinery overspeed protection clutch device |
| CN114602134A (en) * | 2022-03-28 | 2022-06-10 | 唐山师范学院 | A kind of upper and lower limb linkage muscle recovery training device |
-
2010
- 2010-05-31 CN CN2010202093027U patent/CN201703934U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103818797B (en) * | 2014-03-24 | 2016-01-20 | 袁昭成 | Based on velocity limiter and the safety tongs linked system of elevator |
| CN104828668A (en) * | 2015-05-21 | 2015-08-12 | 南通三洋电梯有限责任公司 | Elevator adjusting-type centrifugation speed limiting device |
| CN106517023A (en) * | 2016-12-02 | 2017-03-22 | 河北华桥减速机有限公司 | Safety lock for overhead operating device |
| CN106517023B (en) * | 2016-12-02 | 2019-03-22 | 河北华桥减速机有限公司 | A kind of safety lock of aerial platform |
| CN111278758A (en) * | 2017-11-16 | 2020-06-12 | 株式会社日立制作所 | Safety device, and elevator equipped with the safety device |
| CN110436302A (en) * | 2018-05-02 | 2019-11-12 | 陕西小溪机电科技有限公司 | A kind of towed elevator car guide rail sure brake system |
| CN110821989A (en) * | 2019-11-11 | 2020-02-21 | 中国电子科技集团公司第三十八研究所 | Anti-falling device of elevator |
| CN111503175A (en) * | 2020-06-02 | 2020-08-07 | 上海振亿工程机械有限公司 | Hoisting machinery overspeed protection clutch device |
| CN114602134A (en) * | 2022-03-28 | 2022-06-10 | 唐山师范学院 | A kind of upper and lower limb linkage muscle recovery training device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110112 Termination date: 20110531 |