CN210612721U - Safety hook for high-altitude operation - Google Patents
Safety hook for high-altitude operation Download PDFInfo
- Publication number
- CN210612721U CN210612721U CN201921002614.8U CN201921002614U CN210612721U CN 210612721 U CN210612721 U CN 210612721U CN 201921002614 U CN201921002614 U CN 201921002614U CN 210612721 U CN210612721 U CN 210612721U
- Authority
- CN
- China
- Prior art keywords
- sliding sleeve
- hook
- wall
- stop lever
- rectangular hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Emergency Lowering Means (AREA)
Abstract
The utility model discloses a high altitude construction is with insurance safety hook, including curved couple, the rectangular hole has been seted up to inside one side of curved couple, and the rectangular hole internal rotation installs the pin that the slope set up, the one end of pin extend to curved couple in and with the inside opposite side movable contact of curved couple, it has the extension spring that same slope set up to articulate with bottom one side of pin on the bottom inner wall of rectangular hole, sliding sleeve is equipped with the sliding sleeve on the curved couple, and bottom one side of sliding sleeve contacts with top one side of pin, and the top of sliding sleeve is equipped with the backing sheet of fixed cover on curved couple. The utility model discloses simple structure, convenient operation, the fast and stable locking pin of being convenient for reaches double insurance, and the mode of rotation unblock can effectually avoid the extrusion to cut to rub the phenomenon that causes the unblock unhook for use more safe and reliable, be favorable to the high altitude construction to use.
Description
Technical Field
The utility model relates to a safety hook technical field especially relates to an aerial working is with insurance safety hook.
Background
At present, in the high-altitude operation of industries such as building, fire fighting, electric power and the like, a safety belt is tied when a high-altitude operation person works, the safety belt is connected with the safety rope, the other end of the safety rope is connected with a hook, in the actual operation, the safety rope is hung on a rod-shaped fixture through the hook sleeve, although the method is convenient to use, an effective locking mechanism is not arranged on the hook, the hook is easy to fall off, and personal casualty accidents are caused, the safety performance of the safety belt hook imported from abroad is greatly improved in a few years ago, the hook is mainly characterized in that a locking piece is hinged on the opening part of the hook body, namely the inner side, a return spring is hinged between the locking piece and the hook body, the locking piece can play a role of closing a hook opening in a free state, a safety piece is hinged on the outer side of the hook body, the return spring is arranged between the safety piece and the hook body, and a sliding pin hole is, the sliding pin on the locking piece penetrates through the sliding pin hole, the sliding pin is positioned in the short hole above the sliding pin hole in a free state, the locking piece is in a locking state, when the locking piece needs to be opened, the safety piece is pressed down first, so that the sliding pin slides into the long hole from the short hole of the sliding pin hole, the locking piece can be opened, but in use, if the safety piece is pressed down carelessly slightly, the locking piece is opened, hook falling occurs, and accidents are caused; the common domestic hook for the inclined baffles also has the problems that the inclined baffles cannot be pressed carelessly in the high-altitude operation, so that the rotation of the inclined baffles is easy to cause the safety rope to be separated, and accidents are caused; the safety hook for aerial work is inconvenient to lock the oblique blocking piece quickly and stably, and cannot meet the use requirement, so that the safety hook for aerial work is provided for solving the problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a safety hook for high-altitude operation.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a safety hook for high-altitude operation comprises a bent hook, wherein a rectangular hole is formed in one side inside the bent hook, a stop lever which is obliquely arranged is rotatably mounted in the rectangular hole, one end of the stop lever extends into the bent hook and is movably contacted with the other side inside the bent hook, a tension spring which is obliquely arranged is hinged to one side of the bottom of the stop lever on the inner wall of the bottom of the rectangular hole, a sliding sleeve is slidably sleeved on the bent hook, one side of the bottom of the sliding sleeve is contacted with one side of the top of the stop lever, a support sheet fixedly sleeved on the bent hook is arranged above the sliding sleeve, a tension spring which is movably sleeved on the bent hook is fixedly connected to the bottom of the support sheet and the top of the sliding sleeve, a rectangular groove is formed in the inner wall of one side of the sliding sleeve, a limit rod is slidably sleeved in the rectangular groove, one end of the limit rod extends into the rectangular hole, and the top, the utility model discloses a stop lever, including the rectangular channel, the other end of gag lever post is kept away from its open-ended one side inner wall between a plurality of first springs of fixedly connected with in the rectangular channel, the ring channel has been seted up in the outside of slip cap, and rotates on the ring channel keeps away from its open-ended one side inner wall and overlap and be equipped with the knob ring, the fixed cover of knob intra-annular is equipped with the ring gear, and the inboard meshing of ring gear has a gear, the bottom fixedly connected with pivot of gear, and the bottom of pivot extends to the rectangular channel in, the other end fixedly connected with of gag lever post has the one end of stay cord.
Preferably, a first round hole is formed in the inner wall of the top of the rectangular groove, a first bearing is fixedly sleeved in the first round hole, and an inner ring of the first bearing is fixedly sleeved on the outer side of the rotating shaft.
Preferably, a second bearing is fixedly sleeved on the inner wall of one side of the annular groove, which is far away from the opening of the annular groove, and the outer side of the outer ring of the second bearing is fixedly connected with the inner side of the knob ring.
Preferably, a pin shaft is welded on the inner wall of one side of the rectangular hole, a second round hole is formed in one side of the stop lever, a third bearing is fixedly sleeved in the second round hole, and an inner ring of the third bearing is fixedly sleeved on the outer side of the pin shaft.
Preferably, the top of the supporting piece is provided with a third round hole, and the side wall of the third round hole is fixedly connected with the outer side of the bent hook.
Preferably, a sliding groove is formed in one side of the bent hook, a sliding block is fixedly connected to one side of the top of the sliding sleeve, and the sliding block is connected with the sliding groove in a sliding mode.
Compared with the prior art, the beneficial effects of the utility model are that:
the hook is characterized in that the hook is formed by a bent hook, a rectangular hole, a stop lever, a tension spring, a sliding sleeve, a support sheet, an extension spring, a rectangular groove, a limit lever, a first spring, an annular groove, a knob ring, an inner gear ring, a gear and a rotating shaft which are matched with a pull rope, the knob ring is rotated, the knob ring drives the inner gear ring to rotate, the gear can be driven to rotate by the rotation of the inner gear ring, the gear drives the rotating shaft to wind the pull rope, so that the pull rope pulls the limit lever to be separated from the rectangular hole and compress a plurality of first springs, the elastic force of the extension spring drives the sliding sleeve to be separated from the stop lever upwards, the bent hook is hung on an object, the object extrudes the stop lever, the stop lever rotates on a pin shaft and stretches the tension spring, namely, one end of the stop lever rotates downwards, the other end of the stop lever rotates upwards, when the object completely slides into the bent hook, the sliding sleeve is pulled downwards at the moment, the sliding sleeve drives the limiting rod to move downwards to be staggered with the inner wall of the top of the rectangular hole, the first spring in a compressed state resets and drives the limiting rod to be inserted into the rectangular hole at the moment, the inner wall of the top of the rectangular hole limits the limiting rod to move upwards, one side of the bottom of the sliding sleeve is in contact with one side of the top of the stop lever at the moment, the other end of the stop lever is limited to rotate upwards, the stop lever is limited to rotate, the phenomenon that the stop lever is extruded in operation to cause rotation unlocking is avoided, and the phenomenon that the unlocking and unhooking are caused by rubbing of the extruding and the stop lever can be effectively avoided through a.
The utility model discloses simple structure, convenient operation, the fast and stable locking pin of being convenient for reaches double insurance, and the mode of rotation unblock can effectually avoid the extrusion to cut to rub the phenomenon that causes the unblock unhook for use more safe and reliable, be favorable to the high altitude construction to use.
Drawings
Fig. 1 is a schematic structural view of a safety hook for aerial work of the present invention;
fig. 2 is a schematic sectional structural view of an aerial work safety hook of the present invention;
fig. 3 is a schematic sectional view of a part a of the safety hook for aerial work of the present invention;
fig. 4 is a perspective view of the sliding sleeve and the knob ring connecting piece of the safety hook for working high above ground of the utility model.
In the figure: the device comprises a bent hook 1, a rectangular hole 2, a stop lever 3, a tension spring 4, a sliding sleeve 5, a supporting sheet 6, an extension spring 7, a rectangular groove 8, a limiting rod 9, a first spring 10, an annular groove 11, a knob ring 12, an annular gear 13, a gear 14, a rotating shaft 15 and a pull rope 16.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-4, a safety hook for high-altitude operation comprises a curved hook 1, a rectangular hole 2 is formed in one side inside the curved hook 1, a blocking rod 3 which is obliquely arranged is rotatably installed in the rectangular hole 2, one end of the blocking rod 3 extends into the curved hook 1 and is movably contacted with the other side inside the curved hook 1, a same obliquely arranged tension spring 4 is hinged to one side of the bottom of the blocking rod 3 on the inner wall of the bottom of the rectangular hole 2, a sliding sleeve 5 is slidably sleeved on the curved hook 1, one side of the bottom of the sliding sleeve 5 is contacted with one side of the top of the blocking rod 3, a support sheet 6 fixedly sleeved on the curved hook 1 is arranged above the sliding sleeve 5, a same movable tension spring 7 sleeved on the curved hook 1 is fixedly connected to the bottom of the support sheet 6 and the top of the sliding sleeve 5, a rectangular groove 8 is formed in the inner wall of one side of the sliding sleeve 5, and a, one end of a limiting rod 9 extends into the rectangular hole 2, the top of the limiting rod 9 is in contact with the inner wall of the top of the rectangular hole 2, a plurality of first springs 10 are fixedly connected between the other end of the limiting rod 9 and the inner wall of one side, far away from the opening, of the rectangular groove 8, an annular groove 11 is formed in the outer side of the sliding sleeve 5, a knob ring 12 is rotatably sleeved on the inner wall of one side, far away from the opening, of the annular groove 11, an annular gear 13 is fixedly sleeved in the knob ring 12, a gear 14 is meshed with the inner side of the annular gear 13, a rotating shaft 15 is fixedly connected to the bottom of the gear 14, the bottom end of the rotating shaft 15 extends into the rectangular groove 8, the other end of the limiting rod 9 is fixedly connected with one end of a pull rope 16, the other end of the pull rope 16 is fixedly connected with the outer side of the rotating shaft 15, and the pull rope is fixedly connected with the, The limiting rod 9, the first springs 10, the annular groove 11, the knob ring 12, the inner gear ring 13, the gear 14 and the rotating shaft 15 are matched with the pull rope 16, the knob ring 12 is rotated, the knob ring 12 drives the inner gear ring 13 to rotate, the inner gear ring 13 can drive the gear 14 to rotate, the gear 14 drives the rotating shaft 15 to wind the pull rope 16, so that the pull rope 16 pulls the limiting rod 9 to separate from the rectangular hole 2 and compress the first springs 10, at the moment, the elastic force of the extension spring 7 drives the sliding sleeve 5 to separate upwards from the stop lever 3, at the moment, the bent hook 1 is hung on an object, the object extrudes the stop lever 3, so that the stop lever 3 rotates on the pin shaft and stretches the pull spring 4, namely, one end of the stop lever 3 rotates downwards, the other end rotates upwards, when the object completely slides into the bent hook 1 and is staggered with the stop lever 3, at the moment, the pull spring 4 in a stretching state resets and drives the stop lever 3 to, at the moment, the sliding sleeve 5 is pulled downwards, the sliding sleeve 5 drives the limiting rod 9 to move downwards to be staggered with the inner wall of the top of the rectangular hole 2, the first spring 10 in a compressed state resets and drives the limiting rod 9 to be inserted into the rectangular hole 2, the inner wall of the top of the rectangular hole 2 limits the limiting rod 9 to move upwards, one side of the bottom of the sliding sleeve 5 is contacted with one side of the top of the stop lever 3 at the moment, namely, the other end of the stop lever 3 is limited to rotate upwards, so that the stop lever 3 is limited to rotate, the phenomenon that the stop lever 3 is extruded to cause rotating unlocking in operation is avoided, the rotating unlocking mode can effectively avoid the phenomenon that the stop lever 3 is extruded and rubbed to cause unlocking and unhooking, the utility model has the advantages of simple structure, convenient operation, convenient and fast and stable locking of the stop lever 3, double insurance is achieved, the rotating unlocking mode can effectively avoid the phenomenon that the stop lever 3 is extruded and, is beneficial to the use in high-altitude operation.
The utility model discloses in, first round hole has been seted up on the top inner wall of rectangular channel 8, and the fixed cover is equipped with first bearing in the first round hole, the fixed suit in the outside of the inner circle of first bearing and pivot 15, ring channel 11 keeps away from fixed cover on its open-ended one side inner wall and is equipped with the second bearing, the outer lane outside of second bearing and the inboard fixed connection of knob ring 12, the welding has the round pin axle on one side inner wall of rectangular hole 2, the second round hole has been seted up to one side of pin 3, and the fixed cover is equipped with the third bearing in the second round hole, the inner circle of third bearing and the fixed suit in the outside of round pin axle, the third round hole has been seted up at the top of backing sheet 6, and the lateral wall of third round hole and the outside fixed connection of curved couple 1, the spout has been seted up to one side of curved couple 1, top one side fixedly connected with slider of sliding sleeve, The stop lever 3, the tension spring 4, the sliding sleeve 5, the support sheet 6, the extension spring 7, the rectangular groove 8, the limit lever 9, the first spring 10, the annular groove 11, the knob ring 12, the inner gear ring 13, the gear 14, the rotating shaft 15 and the pull rope 16 are matched, the knob ring 12 is rotated, the knob ring 12 drives the inner gear ring 13 to rotate, the inner gear ring 13 can drive the gear 14 to rotate, the gear 14 drives the rotating shaft 15 to wind the pull rope 16, the pull rope 16 pulls the limit lever 9 to be separated from the rectangular hole 2 and compresses the first springs 10, at the moment, the elastic force of the extension spring 7 drives the sliding sleeve 5 to be separated from the stop lever 3 upwards, at the moment, the bent hook 1 is hung on an object, the object extrudes the stop lever 3, the stop lever 3 rotates on the pin shaft and stretches the pull spring 4, namely, one end of the stop lever 3 rotates downwards, the other end of the stop lever 3 rotates upwards, when the object completely slides into the bent hook 1 and is staggered, the tension spring 4 in a stretching state resets and drives the stop lever 3 to reset, the sliding sleeve 5 is pulled downwards at the moment, the sliding sleeve 5 drives the limiting rod 9 to move downwards to be staggered with the top inner wall of the rectangular hole 2, the first spring 10 in a compression state resets and drives the limiting rod 9 to be inserted into the rectangular hole 2 at the moment, the top inner wall of the rectangular hole 2 limits the limiting rod 9 to move upwards, one side of the bottom of the sliding sleeve 5 is contacted with one side of the top of the stop lever 3 at the moment, namely, the other end of the stop lever 3 is limited to rotate upwards, so that the stop lever 3 is limited to rotate, the stop lever 3 is prevented from being extruded to cause the phenomenon of rotating unlocking in operation, and the rotating unlocking mode can effectively prevent the phenomenon of unlocking and unhooking caused by extruding and rubbing, the use is safer and more reliable, and the use in high-altitude operation is facilitated.
The working principle is as follows: when the device is used, firstly, the knob ring 12 is rotated, the knob ring 12 rotates in the annular groove 11, meanwhile, the knob ring 12 drives the inner gear ring 13 to rotate, as the gear 14 is meshed with the inner gear ring 13, the inner gear ring 13 rotates to drive the gear 14 to rotate, the gear 14 drives the rotating shaft 15 to rotate, the rotating shaft 15 winds the pull rope 16, so that the pull rope 16 moves and drives the limiting rod 9 to slide in the rectangular groove 8, the limiting rod 9 is separated from the rectangular hole 2 and compresses the plurality of first springs 10, at the moment, the sliding sleeve 5 is moved upwards, the sliding sleeve 5 drives the limiting rod 9 to move upwards and stagger from the inner wall of the top of the rectangular hole 2, the pressure on the sliding sleeve 5 is released, at the moment, the elastic force of the tension spring 7 drives the sliding sleeve 5 to move upwards, so that the sliding sleeve 5 is separated from the stop rod 3, at the moment, the bent hook 1 is hung on an object, the object extrudes the stop, namely, one end of the stop lever 3 rotates downwards, the other end rotates upwards, the stop lever 3 stretches the tension spring 4, when an object completely slides into the bent hook 1 and is staggered with the stop lever 3, the tension spring 4 in a stretching state resets and drives the stop lever 3 to reset, the stop lever 3 shields the object, the sliding sleeve 5 is pulled downwards at the moment, the sliding sleeve 5 drives the limit lever 9 to move downwards, when the top of the limit lever 9 is staggered with the inner wall of the top of the rectangular hole 2, the first spring 10 in a compression state resets and drives the limit lever 9 to insert into the rectangular hole 2, the rectangular lever 9 drives the rotating shaft 15 to rotate and reset through the pull rope 16, the rotating shaft 15 drives the inner gear ring 13 to rotate and reset through the gear 14, the inner wall of the top of the rectangular hole 2 limits the limit lever 9 to move upwards at the moment, one side of the bottom of the sliding sleeve 5 is contacted with one side of the top of the stop lever 3 at the moment, namely, the other end, therefore, one end of the stop lever 3 is limited from rotating downwards, the phenomenon of rotating unlocking caused by extruding the stop lever 3 in operation is avoided, the stop lever 3 is convenient to be limited by contacting with the rotary knob ring 12, the phenomenon of unlocking and unhooking caused by extruding, scraping and rubbing can be effectively avoided by the rotating unlocking mode, and the use is safer and more reliable.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. The safety hook for the aerial work comprises a bent hook (1) and is characterized in that a rectangular hole (2) is formed in one side of the inside of the bent hook (1), a stop lever (3) which is obliquely arranged is rotatably mounted in the rectangular hole (2), one end of the stop lever (3) extends into the bent hook (1) and is in movable contact with the other side of the inside of the bent hook (1), a tension spring (4) which is obliquely arranged is hinged to one side of the bottom of the stop lever (3) on the inner wall of the bottom of the rectangular hole (2), a sliding sleeve (5) is sleeved on the bent hook (1) in a sliding manner, one side of the bottom of the sliding sleeve (5) is in contact with one side of the top of the stop lever (3), a support sheet (6) fixedly sleeved on the bent hook (1) is arranged above the sliding sleeve (5), and a tension spring (7) which is movably sleeved on the bent hook (1) is fixedly connected with the bottom of the support sheet (6) and the, the sliding sleeve is characterized in that a rectangular groove (8) is formed in the inner wall of one side of the sliding sleeve (5), a limiting rod (9) is sleeved in the rectangular groove (8) in a sliding mode, one end of the limiting rod (9) extends into the rectangular hole (2), the top of the limiting rod (9) is in contact with the inner wall of the top of the rectangular hole (2), a plurality of first springs (10) are fixedly connected between the other end of the limiting rod (9) and the inner wall of one side, away from the opening, of the rectangular groove (8), an annular groove (11) is formed in the outer side of the sliding sleeve (5), a knob ring (12) is sleeved on the inner wall, away from the opening, of the annular groove (11) in a rotating mode, an inner gear ring (13) is fixedly sleeved in the knob ring (12), a gear (14) is meshed on the inner side of the inner gear ring (13), a rotating shaft (15) is fixedly connected to the bottom of the gear (14, the other end of the limiting rod (9) is fixedly connected with one end of a pull rope (16), and the other end of the pull rope (16) is fixedly connected with the outer side of the rotating shaft (15).
2. The safety hook for high altitude construction according to claim 1, wherein the inner wall of the top of the rectangular groove (8) is provided with a first round hole, a first bearing is fixedly sleeved in the first round hole, and an inner ring of the first bearing is fixedly sleeved with the outer side of the rotating shaft (15).
3. An aerial work safety hook as defined in claim 1, wherein the inner wall of the annular groove (11) on the side away from the opening is fixedly provided with a second bearing, and the outer side of the outer ring of the second bearing is fixedly connected with the inner side of the knob ring (12).
4. The safety hook for high altitude construction according to claim 1, wherein the inner wall of one side of the rectangular hole (2) is welded with a pin shaft, one side of the stop lever (3) is provided with a second round hole, a third bearing is fixedly sleeved in the second round hole, and an inner ring of the third bearing is fixedly sleeved with the outer side of the pin shaft.
5. The safety hook for high-altitude operations as claimed in claim 1, wherein the top of the support piece (6) is provided with a third round hole, and the side wall of the third round hole is fixedly connected with the outer side of the bent hook (1).
6. The safety hook for high-altitude operations as claimed in claim 1, wherein a sliding groove is formed in one side of the bent hook (1), a sliding block is fixedly connected to one side of the top of the sliding sleeve (5), and the sliding block is slidably connected with the sliding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921002614.8U CN210612721U (en) | 2019-06-28 | 2019-06-28 | Safety hook for high-altitude operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921002614.8U CN210612721U (en) | 2019-06-28 | 2019-06-28 | Safety hook for high-altitude operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210612721U true CN210612721U (en) | 2020-05-26 |
Family
ID=70752419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921002614.8U Active CN210612721U (en) | 2019-06-28 | 2019-06-28 | Safety hook for high-altitude operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210612721U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114504746A (en) * | 2022-02-17 | 2022-05-17 | 江西高强电瓷集团有限公司 | Anti-falling safety device for high-altitude anti-falling protection of high-voltage electric tower |
-
2019
- 2019-06-28 CN CN201921002614.8U patent/CN210612721U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114504746A (en) * | 2022-02-17 | 2022-05-17 | 江西高强电瓷集团有限公司 | Anti-falling safety device for high-altitude anti-falling protection of high-voltage electric tower |
| CN114504746B (en) * | 2022-02-17 | 2022-09-16 | 江西高强电瓷集团有限公司 | Anti-falling safety device for high-altitude anti-falling protection of high-voltage electric tower |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210612721U (en) | Safety hook for high-altitude operation | |
| CN105332577B (en) | Cabin door locking device for deep-sea pressure-resistant shell | |
| CN105888491B (en) | A kind of vent window | |
| CN201347703Y (en) | Releaser with function of closing fire door automatically | |
| CN216889520U (en) | Waterproofing membrane coiling mechanism for building | |
| CN112843573B (en) | Fire control reel case | |
| CN213077256U (en) | Novel anti-panic descender | |
| CN212662614U (en) | Tourism alpenstock with rolling type safety rope inside | |
| CN217176378U (en) | Steel heat-insulation fireproof window | |
| CN212914237U (en) | High-rise building aerial fire rescue device | |
| CN211317831U (en) | Sampling device of heavy metal sludge | |
| CN211097182U (en) | Automatic fire extinguisher | |
| CN203808798U (en) | Multifunctional burglary-proof window | |
| CN206272151U (en) | 110kV transmission line rope ladder tighteners | |
| CN210382945U (en) | Umbrella folding structure of self-opening umbrella | |
| CN215413380U (en) | Aviation security antiriot catcher | |
| CN214633582U (en) | Indoor wisdom fire hydrant of high-rise building | |
| CN218129632U (en) | Lever gear locking anti-falling device | |
| CN112193996B (en) | Anti-slip clamping ring for tower crane lifting hook | |
| CN111802864A (en) | Safe type haulage rope | |
| CN111429821A (en) | Prevent safe passageway pilot lamp that shelters from | |
| CN113908456B (en) | Multi-mode eccentric wheel panic-proof descender | |
| CN212274737U (en) | Quick arresting riot-controlling device | |
| CN103445420A (en) | Safe automatic folding and unfolding umbrella | |
| CN214658999U (en) | High-altitude suspension device for building construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |