CN204079141U - Accidental movement of elevator cage safety guard - Google Patents
Accidental movement of elevator cage safety guard Download PDFInfo
- Publication number
- CN204079141U CN204079141U CN201420409367.4U CN201420409367U CN204079141U CN 204079141 U CN204079141 U CN 204079141U CN 201420409367 U CN201420409367 U CN 201420409367U CN 204079141 U CN204079141 U CN 204079141U
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- self
- cam
- safety guard
- accidental movement
- elevator cage
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Abstract
The utility model relates to a kind of accidental movement of elevator cage safety guard; comprise transition bracket, bracket component; bracket component is slidably connected on transition bracket; bracket component is provided with transmission shaft; transmission shaft front end is provided with cam; rear end is provided with intermeshing transmission gear; drive motor is connected with the driven wheel engaged with transmission gear; the self-locking roller that can move up and down and cam lay respectively at the left and right sides of guide rail; rotated by each gear transmission band moving cam, finally coordinated by cam and self-locking roller and guide rail is clamped.Its objective is in order to provide a kind of volume little, be swift in motion, self-locking property is good, can realize bi-directional braking, safe and reliable and be convenient to processing, and the accidental movement of elevator cage safety guard that use cost is low.
Description
Technical field
The utility model relate in elevator detect, the applied technical field of fault correction or safety device, particularly relate to a kind of brake equipment that act between car, cage or skip bucket and fixed guide element or elevator passage or elevator hoistways inside face, that utilize friction brake force or pawl device.
Background technology
Elevator under flat bed back pullout (BPO) state, personnel normally come in and go out or handling goods process in; because certain electric elements of elevator or certain parts of traction brake system break down; car has the unexpected situation moving away stop; make elevator in use there is major accident hidden danger, therefore the corresponding safety guard of urgent need increase prevent car accidental movement.
Utility model content
The technical problems to be solved in the utility model be to provide a kind of volume little, be swift in motion, self-locking property is good, can realize bi-directional braking, safe and reliable and be convenient to processing, and the accidental movement of elevator cage safety guard that use cost is low.
The utility model accidental movement of elevator cage safety guard, comprises transition bracket, brake component, drive element, and guide rail is positioned at the middle part of described transition bracket, and described transition bracket comprises guide plate, lower guide plate,
Described brake component comprises bracket component, the two ends up and down of described bracket component are slidably connected at described upper guide plate, on lower guide plate, described bracket component comprises header board successively by after forward direction, middle plate, rear plate, described middle plate offers two axis holes distributed up and down, the first transmission shaft that anterior-posterior horizontal is arranged, second driving shaft through described axis hole and with described axis hole free-running fit, described first transmission shaft, the position of second driving shaft is symmetrical up and down, described first transmission shaft, the front end of second driving shaft is equiped with the identical overhead cam of structure symmetrically by flat key, lower cam, described overhead cam, lower cam is all positioned at the right side of described guide rail, described header board is positioned at described overhead cam, the front of lower cam, described first transmission shaft, the rear end of second driving shaft is equiped with intermeshing first transmission gear symmetrically respectively by flat key, second transmission gear,
Described brake component also comprises and is positioned at described overhead cam, self-locking roller on the left of lower cam, the arranged direction of described self-locking roller and described overhead cam, lower cam is identical, the front of described self-locking roller is provided with left cover, described left cover is fixedly connected with described bracket component, described self-locking roller is positioned at the left side of described guide rail, described left cover offers to downward-extension and deep-slotted chip breaker bending to the left, after roller shaft passes perpendicularly through described self-locking roller, front end embeds in described deep-slotted chip breaker, rear end is close on described bracket component, described bracket component upper, lower two ends are slidably installed with vertical layout respectively and overlap the first guide finger being filled with Compress Spring, second guide finger, described first guide finger, described self-locking roller clip is held in centre by the second guide finger,
The left side of described bracket component is installed with braking guide plate, and the right flank of described braking guide plate is provided with the cambered surface of depression, and the radian of described cambered surface is identical with the radian of described deep-slotted chip breaker,
The electric-controlled parts that described drive element comprises drive motor and is connected with described drive motor, described drive motor is connected with driven wheel by linking bond or jackscrew, described driven wheel is positioned at the lower left of described first transmission gear and engages with described first transmission gear, and the axle drive shaft of described drive motor stretches in the hole on described middle plate through front end after described driven wheel.
The utility model accidental movement of elevator cage safety guard difference from prior art is the cooperation of the utility model accidental movement of elevator cage safety guard by brake component and drive element; make the self-locking roller in brake component and cam clamping guide-rail simultaneously, prevent car accidental movement.The utility model accidental movement of elevator cage safety guard self-locking property is good; bi-directional braking can be realized rapidly, prevent car accidental movement in time; thus the safety performance of elevator is substantially increased; and this device volume little, easy for installation, be convenient to processing; both improve work efficiency, again reduce use cost.
The utility model accidental movement of elevator cage safety guard, the left side of wherein said braking guide plate is provided with backing plate, and described backing plate is fixedly mounted on the left side of described bracket component.By increasing and decreasing the thickness of backing plate, cam and self-locking roller can be made for guideway centreline's symmetry, make adjustment convenient, further increase the precision of this device.
The utility model accidental movement of elevator cage safety guard; the trailing flank of wherein said first transmission gear, the second transmission gear is fixedly installed respectively the first adjustment block, the second adjustment block; described drive element also comprises the first stroke change-over swith, the second return of stroke switch arranged up and down; be connected by the first driving lever between described first adjustment block with described first stroke change-over swith, be connected by the second driving lever between described second adjustment block with described second return of stroke switch.By arranging change-over swith and being mated the adjustment block of effect, after the failture evacuation of car accidental movement, cam can be adjusted in time, quickly and easily and turns to, decontrol guide rail, elevator is normally run, thus for the use of elevator provides a great convenience.
The utility model accidental movement of elevator cage safety guard; wherein said transmission shaft is provided with the shaft shoulder; the described shaft shoulder is between described cam and described middle plate, and be equiped with spacing sleeve between described transmission gear and described middle plate, the rear end of described transmission shaft is equiped with back-up ring.Arranging the shaft shoulder can prevent cam from moving forward and backward, gear is clipped in the middle by spacing sleeve and back-up ring, can effectively avoid gear to move forward and backward, and these arrange the precision that all improve this device, ensure that car by timely stop, can further increase the safety performance of elevator.
The utility model accidental movement of elevator cage safety guard, is equiped with self-lubricating bearing in wherein said axis hole.Self-lubricating bearing wear resisting property is good, friction coefficient is little, ensure that the operating accuracy of transmission shaft, and transmission shaft can be made to reduce vibration, improves the transmission effect of axle.
The utility model accidental movement of elevator cage safety guard, wherein said electric-controlled parts is also connected with the limit switch arranged up and down, and described limit switch is positioned on the mobile route of described self-locking roller.Be arranged on by limit switch on the mobile route of self-locking roller, self-locking roller can touch switch while locking guide rail, makes elevator safety loop power-off, avoids towing machine and other actuating device action, thus further increase the safety of elevator.
The utility model accidental movement of elevator cage safety guard; the left and right sides plate of wherein said transition bracket is provided with the symmetrical in opposite directions and stop screw arranged in the horizontal direction; described stop screw is arranged with spring, and the telescopic end of described spring contacts with the left side plate of described bracket component.Stop screw and spring coordinate the left and right displacement that both can limit bracket component under the not extruded state of guide rail, guide rail is made to be positioned on the line of centers of bracket component, again can after the release of this device clamping guide rail, guide rail contact with cam disengages, the screen resilience by spring makes bracket component reset.
The utility model accidental movement of elevator cage safety guard, the end of wherein said first transmission shaft, second driving shaft is provided with zerk, and described zerk is positioned at described back-up ring rear.Can associated components oiling be given by zerk, avoid parts to get rusty, not only reduce the friction between parts, improve the operating accuracy of parts, and make parts be not easy wearing and tearing, extend service life, provide cost savings.
Below in conjunction with accompanying drawing, accidental movement of elevator cage safety guard of the present utility model is described further.
Accompanying drawing explanation
Fig. 1 is that the master of the utility model accidental movement of elevator cage safety guard looks part sectional view;
Fig. 2 is that part sectional view is looked on a left side for the utility model accidental movement of elevator cage safety guard;
Fig. 3 be the utility model accidental movement of elevator cage safety guard overlook part sectional view;
Fig. 4 is the structural representation of drive element in the utility model accidental movement of elevator cage safety guard;
Fig. 5 be the utility model accidental movement of elevator cage safety guard install and use constitution diagram.
Detailed description of the invention
As shown in Figure 1 and Figure 2; the utility model accidental movement of elevator cage safety guard comprises transition bracket 1, brake component 2, drive element 3; guide rail 8 is positioned at the middle part of transition bracket 1; transition bracket 1 comprises guide plate 101, lower guide plate 102; upper guide plate 101, lower guide plate 102 all offer chute (not illustrating in figure), chute extends in left-right direction.
Brake component 2 comprises bracket component 204, the two ends up and down of bracket component 204 have been threaded guider screw 2041 respectively, the screw cap (not illustrating in figure) of guider screw 2041 is positioned at above-mentioned chute, above-mentioned screw cap horizontally slips along chute, drive bracket component 204 sway on transition bracket 1, the screw cap (not illustrating in figure) of guider screw 2041 also plays a part upper and lower spacing simultaneously to bracket component 204.
Bracket component 204 is by comprising header board 200, middle plate 2001, rear plate 2002 after forward direction successively, middle plate 2001 offers two axis holes distributed up and down, anterior-posterior horizontal arrange the first transmission shaft 212, second driving shaft 214 rear end through axis hole and with axis hole free-running fit, can rotate in axis hole.The position of the first transmission shaft 212, second driving shaft 214 is symmetrical up and down.Preferably, self-lubricating bearing 213 is equiped with in axis hole.
The front end of the first transmission shaft 212, second driving shaft 214 is equiped with the identical overhead cam of structure 208, lower cam 207 symmetrically respectively by the first flat key 2081, second flat key 2071, overhead cam 208, lower cam 207 are all positioned at the right side of guide rail 8, first transmission shaft 212, second driving shaft 214 are also respectively equipped with first shaft shoulder 2121, second shaft shoulder 2141, overhead cam 208, between lower cam 207 and middle plate 2001 by first shaft shoulder 2121, second shaft shoulder 2141 spacing, header board 200 is positioned at the front of overhead cam 208, lower cam 207.
The rear end of the first transmission shaft 212, second driving shaft 214 is equiped with intermeshing first transmission gear 217, second transmission gear 218 symmetrically respectively by the 3rd flat key 211, the 4th flat key 2111, be equiped with the first spacing sleeve 215, second spacing sleeve the 216, three flat key 211 between first transmission gear 217, second transmission gear 218 and middle plate 2001 respectively, the rear end of the 4th flat key 2111 is equiped with the first back-up ring 2171, second back-up ring 2181 respectively.The end of the first transmission shaft 212, second driving shaft 214 is equiped with the rear that the first zerk 2172, second zerk 2182, first zerk 2172, second zerk 2182 lays respectively at the first back-up ring 2171, second back-up ring 2181.
Again shown in composition graphs 4, the electric-controlled parts 4 that drive element 3 comprises drive motor 30 and is connected with drive motor 30, receives electric-controlled parts 4 when sending elevator chance failure signal, and drive motor 30 is energized and runs.Drive motor 30 is connected with driven wheel 33 by linking bond (not illustrating in figure) or jackscrew 35, again shown in composition graphs 4, driven wheel 33 is positioned at the lower left of the first transmission gear 217 and engages with the first transmission gear 217, the axle drive shaft 301 of drive motor 30 is through after driven wheel 33, and front end is stretched in the hole 2003 on middle plate 2001.Drive motor 30 is energized and runs, and axle drive shaft 301 rotates, and drives driven wheel 33 to rotate.The trailing flank of the first transmission gear 217, second transmission gear 218 is fixedly installed respectively the first adjustment block 2173, second adjustment block 2183, drive element 3 also comprises the first stroke change-over swith 36, the second return of stroke switch 37 arranged up and down, be connected by the first driving lever 361 between first adjustment block 2173 with the first stroke change-over swith 36, be connected by the second driving lever 371 between the second adjustment block 2183 with the second return of stroke switch 37.After failture evacuation, elevator need resume operation, now, open return of stroke switch, adjustment block stirred by the driving lever on change-over swith, gear is rotated backward, and then band moving cam rotates backward, cam and guide rail 8 disengage, and final following self-locking roller 203 also departs from guide rail 8, guide rail 8 is released, and elevator normally runs.
Again as shown in Figure 1, Figure 3, the guide rail 8 in Fig. 1 have employed omissive representation, left cover 205 have employed foreshortened figure.Brake component 2 also comprises the self-locking roller 203 be positioned on the left of overhead cam 208, lower cam 207, the arranged direction of self-locking roller 203 and overhead cam 208, lower cam 207 are identical, the front of self-locking roller 203 is provided with left cover 205, left cover 205 screw 206 and bracket component 204 are fixed together, and are limited in by self-locking roller 203 in the cavity of the bracket component 204 on the left of guide rail 8.Left cover 205 offers to downward-extension and deep-slotted chip breaker 2051 bending to the left, after roller shaft 2031 passes perpendicularly through self-locking roller 203, front end embeds in deep-slotted chip breaker 2051, and rear end is close on bracket component 204.The upper/lower terminal of bracket component 204 is provided with laterally zygomorphic upper pin-and-hole 2042, lower pin-and-hole 2043 near the position of self-locking roller 203, in upper pin-and-hole 2042, lower pin-and-hole 2043, installing cover is filled with the first guide finger 201, second guide finger 202 of the first Compress Spring 2011, second Compress Spring 2021 respectively, first guide finger 201, second guide finger 202 is vertical cloth postpone one on the other, self-locking roller 203 is clamped in centre, the bottom of the first guide finger 201 and the top contact of self-locking roller 203, the top of the second guide finger 202 contacts with the bottom of self-locking roller 203.Up-and-down movement under the effect of the friction force of self-locking roller 23 between itself and guide rail 8, thus promotes guide finger up-and-down movement.The left side of bracket component 204 is installed with backing plate 210, the right side of backing plate 210 is installed with braking guide plate 209, the right flank of braking guide plate 209 is provided with the cambered surface 2091 of depression, the radian of cambered surface 2091 is identical with the radian of deep-slotted chip breaker 2051, ensure that the displacement that can not to occur while self-locking roller 203 moves down left, but move right gradually.In addition, the arranged on left and right sides plate of transition bracket 1 is provided with the first stop screw 12, second stop screw 13 of horizontal arrangement, the position of the first stop screw 12, second stop screw 13 is symmetrical in opposite directions, first stop screw 12, second stop screw 13 is arranged with respectively the first spring 121, second spring 131, the right-hand member of the first spring 121, the left end of the second spring 131 contact with the left side plate of bracket component 204 respectively, stop screw and spring match, bracket component is clamped in centre, ensures that its position is placed in the middle.
Again shown in composition graphs 4; electric-controlled parts 4 is also connected with the limit switch 34 arranged up and down, limit switch 34 is positioned on the mobile route of self-locking roller 203, and self-locking roller 203 moves up or down certain distance; limit switch 34 can be touched, elevator safety loop power-off protection.
As shown in Figure 5; for the scheme of installation of the utility model accidental movement of elevator cage safety guard; the sedan-chair frame 6 supporting car 5 is provided with outside car 5; sedan-chair frame 6 comprises the vertical beam 62 that the top roof beam 61 of lateral arrangement and the left and right sides are vertically arranged; car 5 is fixed on guide rail 8 by leading boots 7; the installation of above-mentioned each parts arranges and can adopt routine techniques means, does not repeat herein.During use; the safety guard of the utility model accidental movement of elevator cage safety guard is installed symmetrically in the left and right sides of sedan-chair frame 6; the structure of two fender guards is identical; only installation direction needs to do accommodation, and two fender guards are all fixedly mounted in roof beam 61 by transition bracket 1.
The principle of work of the safety guard of the utility model accidental movement of elevator cage safety guard is: when safety device receives the accidental movement of elevator cage signal that electric-controlled parts 4 sends, drive motor 30 in safety device is energized and rotates, and drive driven wheel 33 synchronous axial system by linking bond or jackscrew 35, the first transmission gear 217 engaged with it is driven to rotate by driven wheel 33, first transmission gear 217 drives the second transmission gear 218 engaged with it to rotate again, again respectively by the first transmission gear 217, second transmission gear 218 transmits motion to overhead cam 208 by respective transmission shaft, lower cam 207, make two cam move toward one another, namely overhead cam 208 rotates counterclockwise and makes its cam height point gradually near guide rail 8, meanwhile, lower cam 207 also makes its cam height point gradually near guide rail 8 along rotating clockwise, after two cams contact guide rail 8 simultaneously, be rotated further and just can produce horizontal thrust, make brake component 2 along with upper at transition bracket 1 of bracket component 204, in lower guide plate, level is slided to the right, thus make the periphery of the self-locking roller 203 be positioned on the left of guide rail 8 also gradually near guide rail 8 until contact with guide rail 8, make guide rail 8 by micro-clamping, car 5 continues to move down, under the effect of friction force, two cams continue to rotate towards clamping direction, simultaneously, self-locking roller 203 is also along cambered surface 2091 slide downward on braking guide plate 209, until guide rail 8 clamps by two cams and self-locking roller 203 simultaneously, car 5 is stopped mobile.When after accidental movement of elevator cage Failure elimination, matched by return of stroke switch and adjustment block, change cam and turn to, cam is rotated towards the direction of unclamping guide rail 8, and then bracket component 204 is moved to the left, self-locking roller 203 is also moved to the left thereupon and disengages with guide rail 8, and now, friction force disappears, under the effect of Compress Spring, self-locking roller 203 resets, and guide rail 8 is fully released, and elevator recovers normal and runs.
Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (8)
1. an accidental movement of elevator cage safety guard, comprises transition bracket (1), brake component (2), drive element (3),
It is characterized in that: guide rail (8) is positioned at the middle part of described transition bracket (1), described transition bracket (1) comprises guide plate (101), lower guide plate (102),
Described brake component (2) comprises bracket component (204), the two ends up and down of described bracket component (204) are slidably connected at described upper guide plate (101), on lower guide plate (102), described bracket component (204) is by comprising header board (200) after forward direction successively, middle plate (2001), rear plate (2002), described middle plate (2001) offers two axis holes distributed up and down, the first transmission shaft (212) that anterior-posterior horizontal is arranged, second driving shaft (214) through described axis hole and with described axis hole free-running fit, described first transmission shaft (212), the position of second driving shaft (214) is symmetrical up and down, described first transmission shaft (212), the front end of second driving shaft (214) is equiped with the identical overhead cam of structure (208) symmetrically by flat key, lower cam (207), described overhead cam (208), lower cam (207) is all positioned at the right side of described guide rail (8), described header board (200) is positioned at described overhead cam (208), the front of lower cam (207), described first transmission shaft (212), the rear end of second driving shaft (214) is equiped with intermeshing first transmission gear (217) symmetrically respectively by flat key, second transmission gear (218),
Described brake component (2) also comprises and is positioned at described overhead cam (208), the self-locking roller (203) in lower cam (207) left side, the arranged direction of described self-locking roller (203) and described overhead cam (208), lower cam (207) is identical, the front of described self-locking roller (203) is provided with left cover (205), described left cover (205) is fixedly connected with described bracket component (204), described self-locking roller (203) is positioned at the left side of described guide rail (8), described left cover (205) offers to downward-extension and deep-slotted chip breaker (2051) bending to the left, roller shaft (2031) passes perpendicularly through described self-locking roller (203) and embeds in described deep-slotted chip breaker (2051) in front end afterwards, rear end is close on described bracket component (204), described bracket component (204) upper, lower two ends are slidably installed with vertical layout respectively and overlap the first guide finger (201) being filled with Compress Spring, second guide finger (202), described first guide finger (201), described self-locking roller (203) is clamped in centre by the second guide finger (202),
The left side of described bracket component (204) is installed with braking guide plate (209), the right flank of described braking guide plate (209) is provided with the cambered surface (2091) of depression, the radian of described cambered surface (2091) is identical with the radian of described deep-slotted chip breaker (2051)
The electric-controlled parts (4) that described drive element (3) comprises drive motor (30) and is connected with described drive motor (30), described drive motor (30) is connected with driven wheel (33) by linking bond or jackscrew (35), described driven wheel (33) is positioned at the lower left of described first transmission gear (217) and engages with described first transmission gear (217), the axle drive shaft (301) of described drive motor (30) stretches in the hole (2003) on described middle plate (2001) front end afterwards through described driven wheel (33).
2. accidental movement of elevator cage safety guard according to claim 1; it is characterized in that: the left side of described braking guide plate (209) is provided with backing plate (210), and described backing plate (210) is fixedly mounted on the left side of described bracket component (204).
3. accidental movement of elevator cage safety guard according to claim 1 and 2, it is characterized in that: described first transmission gear (217), the trailing flank of the second transmission gear (218) is fixedly installed respectively the first adjustment block (2173), second adjustment block (2183), described drive element (3) also comprises the first stroke change-over swith (36) arranged up and down, second return of stroke switch (37), be connected by the first driving lever (361) between described first adjustment block (2173) with described first stroke change-over swith (36), be connected by the second driving lever (371) between described second adjustment block (2183) with described second return of stroke switch (37).
4. accidental movement of elevator cage safety guard according to claim 3; it is characterized in that: described transmission shaft is provided with the shaft shoulder; the described shaft shoulder is arranged between described cam and described plate (2001); be equiped with spacing sleeve between described transmission gear and described middle plate (2001), the rear end of described transmission shaft is equiped with back-up ring.
5. accidental movement of elevator cage safety guard according to claim 4, is characterized in that: be equiped with self-lubricating bearing (213) in described axis hole.
6. accidental movement of elevator cage safety guard according to claim 5; it is characterized in that: described electric-controlled parts (4) is also connected with the limit switch (34) arranged up and down, described limit switch (34) is positioned on the mobile route of described self-locking roller (203).
7. accidental movement of elevator cage safety guard according to claim 6; it is characterized in that: the left and right sides plate of described transition bracket (1) is provided with the symmetrical in opposite directions and stop screw arranged in the horizontal direction; described stop screw is arranged with spring, and the telescopic end of described spring contacts with the left side plate of described bracket component (204).
8. accidental movement of elevator cage safety guard according to claim 7; it is characterized in that: the end of described first transmission shaft (212), second driving shaft (214) is provided with zerk, and described zerk is positioned at described back-up ring rear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420409367.4U CN204079141U (en) | 2014-07-23 | 2014-07-23 | Accidental movement of elevator cage safety guard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420409367.4U CN204079141U (en) | 2014-07-23 | 2014-07-23 | Accidental movement of elevator cage safety guard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204079141U true CN204079141U (en) | 2015-01-07 |
Family
ID=52171879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420409367.4U Withdrawn - After Issue CN204079141U (en) | 2014-07-23 | 2014-07-23 | Accidental movement of elevator cage safety guard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204079141U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150312A (en) * | 2014-07-23 | 2014-11-19 | 河北东方富达机械有限公司 | Safety protection device for accidental movement of elevator car |
| CN104817006A (en) * | 2015-05-20 | 2015-08-05 | 南通中尧特雷卡电梯产品有限公司 | Elevator damping device |
| CN112055269A (en) * | 2020-09-25 | 2020-12-08 | 重庆信息通信研究院 | Small mobile station suitable for 5G communication technology |
-
2014
- 2014-07-23 CN CN201420409367.4U patent/CN204079141U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150312A (en) * | 2014-07-23 | 2014-11-19 | 河北东方富达机械有限公司 | Safety protection device for accidental movement of elevator car |
| CN104150312B (en) * | 2014-07-23 | 2016-06-01 | 河北东方富达机械有限公司 | Accidental movement of elevator cage safeguard protection device |
| CN104817006A (en) * | 2015-05-20 | 2015-08-05 | 南通中尧特雷卡电梯产品有限公司 | Elevator damping device |
| CN104817006B (en) * | 2015-05-20 | 2017-05-17 | 南通中尧特雷卡电梯产品有限公司 | Elevator damping device |
| CN112055269A (en) * | 2020-09-25 | 2020-12-08 | 重庆信息通信研究院 | Small mobile station suitable for 5G communication technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150107 Effective date of abandoning: 20160601 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |