CN105035905A - Hydraulic electronic safety tong system - Google Patents
Hydraulic electronic safety tong system Download PDFInfo
- Publication number
- CN105035905A CN105035905A CN201510519307.7A CN201510519307A CN105035905A CN 105035905 A CN105035905 A CN 105035905A CN 201510519307 A CN201510519307 A CN 201510519307A CN 105035905 A CN105035905 A CN 105035905A
- Authority
- CN
- China
- Prior art keywords
- hydraulic
- safety tongs
- connecting rod
- oil cylinder
- fault detection
- 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.)
- Granted
Links
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 239000002965 rope Substances 0.000 claims abstract description 13
- 238000003825 pressing Methods 0.000 claims description 19
- 239000012530 fluid Substances 0.000 claims description 13
- 239000002828 fuel tank Substances 0.000 claims description 10
- 239000003921 oil Substances 0.000 description 47
- 239000010720 hydraulic oil Substances 0.000 description 9
- 238000009434 installation Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000001681 protective Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/12—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions in case of rope or cable slack
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
Abstract
The invention discloses a hydraulic electronic safety tong system which comprises a safety tong pull rod mechanism, a hydraulic station, a fault detection mechanism and a car. The hydraulic safety tong pull rod mechanism is connected with the hydraulic station. The hydraulic station is electrically connected with the fault detection mechanism. The safety tong pull rod mechanism, the hydraulic station and the fault detection mechanism are arranged on the car. The fault detection mechanism is used for detecting faults of an elevator, such as rope breakage and overspeed, in real time. When the faults happen, the fault detection mechanism feed the faults back to the hydraulic station, and then the hydraulic station controls the safety tong pull rod mechanism to stop the car. According to the design, a speed limiter and safety tongs do not need to be arranged in a separated manner, the structure is simplified, and mounting and maintenance are facilitated; and a hydraulic system is used for control, stability and high reliability are achieved, the service life is long, and the cost is greatly saved.
Description
Technical field
The present invention relates to elevator accessory field, especially relate to a kind of hydraulic elevator safety tongs system.
Background technology
Nowadays all can lift-mounting at a lot of high building and common facilities, elevator is manned vertical transportation instrument, safe operation must be put in the first place.For ensureing elevator safety operation, all to fully take into account from links such as design, manufacture, installations and preventing dangerous generation, and for various contingent danger, special safety device is set.
And for this reason, people start to install safety tongs device on elevator, elevator safety clamp device is under the manipulation of velocity limiter, when elevator speed exceedes the limited speed of elevator governor setting, or when suspension strop fracture occurs and be lax, by urgent for car stop and a kind of safety device be clamped on guide rail.It provides actv. protective effect to the safe operation of elevator.But velocity limiter and safety tongs are that general velocity limiter is arranged on the top of elevator, and safety tongs is arranged on the both sides of car separately two local installations in traditional design, the mechanism such as steel rope or pull bar is utilized to couple together between the two, complex structure, installation and maintenance are inconvenient, and manufacturing cost is high.
Summary of the invention
The object of the present invention is to provide a kind of structure simple, reliability is high, low cost of manufacture, and installation, maintenance is hydraulic electronic safety tongs system easily.
According to an aspect of the present invention, provide a kind of hydraulic electronic safety tongs system, comprise safety tongs drag link mechanism, Hydraulic Station, fault detection mechanism and car, wherein safety tongs drag link mechanism is connected with Hydraulic Station, Hydraulic Station and fault detection mechanism are electrically connected, and safety tongs drag link mechanism, Hydraulic Station and fault detection mechanism are installed on car.
The invention has the beneficial effects as follows: the fault that the present invention utilizes fault detection mechanism to come elevator, as disconnected rope, hypervelocity etc. detect in real time, when a failure occurs, fault detection mechanism feeds back to Hydraulic Station, and then Hydraulic Station controls safety tongs drag link mechanism and stops car.This design, without the need to velocity limiter and safety tongs being installed separately, simplifies the structure, and facilitates and install and maintenance, and uses HYDRAULIC CONTROL SYSTEM, stable and reliability is high, and the life-span is long, greatly provides cost savings.
In some embodiments, safety tongs drag link mechanism comprises safety tongs, pull bar, connecting rod, connecting rod base, oil cylinder and cylinder rack, wherein safety tongs, pull bar, connecting rod are connected successively with oil cylinder, connecting rod is arranged on connecting rod base, oil cylinder is arranged on oil cylinder seat, and safety tongs, connecting rod base and oil cylinder seat are installed on car.Safety tongs drag link mechanism utilizes pull bar control link strain or loosen safety tongs, elevator out of control is stopped in time, simplify the control structure of conventional security pincers, more reliable and safety, and reduce cost, in addition, because each parts are all arranged on the annex of car, installation and the maintenance of mechanism can be facilitated.
In some embodiments, Hydraulic Station comprises Hydraulic Pump, check valve, accumulator, pressure relay, fuel tank, ball electromagnetic valve and electrical motor, wherein Hydraulic Pump is connected with electrical motor, and its oil inlet end is connected with fuel tank, oil outlet end, the check valve of Hydraulic Pump are connected by oil pipe successively with accumulator, check valve is connected with pressure relay, and check valve, ball electromagnetic valve are connected successively with oil cylinder, and Hydraulic Pump is also connected with electrical motor.Whether the work that Hydraulic Station utilizes pressure relay to carry out hydraulic control pump is filled can and stop to accumulator, and ensure that accumulator always maintains a normal energy storage state with this, system architecture is simple, safe and reliable, and can save a large amount of energy and cost.
In some embodiments, fault detection mechanism comprises diversion sheave, electronics rotational speed governor, pressing plate, pressing plate frame, spring, travel switch and ward off rope support, one end of its center platen is connected with pressing plate frame, the other end is connected with spring, electronics rotational speed governor and travel switch are all electrically connected with ball electromagnetic valve, pressing plate and travel switch are installed in immediately below diversion sheave, and diversion sheave, electronics rotational speed governor, pressing plate frame, spring and travel switch are installed on ward off rope support.Fault detection mechanism utilizes electronics rotational speed governor to monitor the rotating speed of diversion sheave, monitor the speed of elevator with this, and judge whether it occurs the phenomenon that exceeds the speed limit, travel switch arranges then in order to when there is disconnected rope, can start safety tongs in time to stop car, structure simply but reliably effective.
In some embodiments, the riser that connecting rod base comprises connecting rod base plate and is fixedly connected with connecting rod base plate, riser is provided with the first groove, and the first groove and connecting rod match.Connecting rod base is provided with the first groove and mates with connecting rod connecting rod can be allowed to be arranged in riser better, and ensure that the accuracy of transmission.
In some embodiments, oil cylinder comprises oil cylinder base plate, gray iron, piston and piston rod, and wherein cylinder body one end is connected with oil cylinder base plate, the other end is connected with cylinder cap, and piston is connected with piston rod, and piston is arranged in cylinder body, piston rod is provided with the second groove, and the second groove and connecting rod match.Oil cylinder is provided with the second groove can mate the installation facilitating the second groove with connecting rod, ensure the accuracy of transmission.
In some embodiments, cylinder rack comprises lower plate, column and panel, and its central post one end is fixedly connected with lower plate, and the other end is fixedly connected with panel, and oil cylinder is arranged on panel.Cylinder rack the installation being convenient to oil cylinder is set, and the accuracy of oil cylinder installation site can be ensured.
In some embodiments, Hydraulic Station also comprises by pass valve, return filter and reset electromagnetic valve, wherein the oil outlet end of Hydraulic Pump, by pass valve are connected successively with return filter, and return filter is also connected with fuel tank, and reset electromagnetic valve is connected with Hydraulic Pump, return filter and oil cylinder respectively.The setting of reset electromagnetic valve is that conveniently oil cylinder can be retracted in time, removes the tension of safety tongs, places under repair to elevator.
In some embodiments, accumulator comprises air chamber and fluid chamber, and wherein air chamber is communicated with fluid chamber.Accumulator carrys out the volume of gas in compressed gas chamber by increasing hydraulic oil in fluid chamber, and with this, hydraulic energy is become energy in gas and reach energy storage effect.
In some embodiments, pressure relay comprises high-voltage switch gear and low tension switch, and its high-voltage switch and low tension switch are all electrically connected with electrical motor.High-voltage switch gear and low tension switch the different conditions that can control electrical motor is set, thus hydraulic control system.
Accompanying drawing explanation
Fig. 1 is the front view of the structure of the hydraulic electronic safety tongs system of one embodiment of the present invention.
Fig. 2 is the left view of the structure of the safety tongs of hydraulic electronic shown in Fig. 1 system.
Fig. 3 is the partial enlarged drawing of the part A of the safety tongs of hydraulic electronic shown in Fig. 1 system.
Fig. 4 is the cutaway view of the oil cylinder of the drag link mechanism of safety tongs shown in Fig. 1.
Fig. 5 is the left view of the oil cylinder of the drag link mechanism of safety tongs shown in Fig. 4.
Fig. 6 is the structural representation of the connecting rod base of the drag link mechanism of safety tongs shown in Fig. 1.
Fig. 7 is the left view of the connecting rod base of the drag link mechanism of safety tongs shown in Fig. 6.
Fig. 8 is the structural representation of the cylinder rack of the drag link mechanism of safety tongs shown in Fig. 1.
Fig. 9 is the hydraulic schematic of the Hydraulic Station of the safety tongs of hydraulic electronic shown in Fig. 1 system
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further detailed explanation.
With reference to figure 1 and Fig. 2, hydraulic electronic safety tongs system, comprises safety tongs drag link mechanism 1, Hydraulic Station 2, fault detection mechanism 3 and car 4.Safety tongs drag link mechanism 1 is connected with Hydraulic Station 2, and Hydraulic Station 2 and fault detection mechanism 3 are electrically connected, and safety tongs drag link mechanism 1, Hydraulic Station 2 and fault detection mechanism 3 are installed on car 4.
With reference to figure 1 and Fig. 3, safety tongs drag link mechanism 1 comprises safety tongs 11, pull bar 12, connecting rod 13, connecting rod base 14, oil cylinder 15 and cylinder rack 16.Safety tongs 11 is connected with one end of pull bar 12, and the other end, the connecting rod 13 of pull bar 12 are connected successively with oil cylinder 15 unit's pin, and connecting rod 13 is also arranged on connecting rod base 14 with unit's pin.Connecting rod base 14 and oil cylinder seat 16 are all arranged on car 4 and push up, and safety tongs 1 is arranged on bottom car 4.In addition, in order to allow work time more reliable, safety tongs 1, pull bar 2, connecting rod 3 and connecting rod base 4 are all two, are symmetricly set on oil cylinder 5 both sides.
With reference to figure 4, Fig. 5 and Fig. 8, oil cylinder 15 comprises oil cylinder base plate 151, cylinder body 152, cylinder cap 153, piston 154 and piston rod 155.Cylinder body 152 one end is connected with oil cylinder base plate 151, and the other end is connected with cylinder cap 153, and piston 154 is fixedly connected with nut with piston rod 155, and piston 154 is arranged in cylinder body 152, and piston rod 155 is provided with the second groove 1551, second groove 1551 and connecting rod 13 matches.Cylinder rack 16 comprises lower plate 161, column 162 and panel 163.Column 162 one end is fixedly connected with lower plate 161, and the other end is fixedly connected with panel 163, and oil cylinder 15 is arranged on panel 163.Oil cylinder base plate 151 bolt is arranged on lower plate 161 times, and oil cylinder 15 is also provided with fuel feed hole and oil outlet to facilitate its work in addition.
With reference to figure 6 and Fig. 7, the riser 142 that connecting rod base 14 comprises connecting rod base plate 141 and is fixedly connected with connecting rod base plate 141, riser 142 is provided with the first groove 1421, first groove 1421 and connecting rod 13 match, make connecting rod 13 can put into the first groove 1421 and be arranged on riser 142, conveniently connect in addition, riser 142 is also provided with hole, make connecting rod 13 can sell passing hole with unit and be arranged in riser 142.
With reference to figure 1 and Fig. 9, Hydraulic Station 2 Hydraulic Pump 21, check valve 22, accumulator 23, pressure relay 24, fuel tank 25, ball electromagnetic valve 26 and electrical motor 27.The oil inlet end of Hydraulic Pump 21 is connected with fuel tank 25, oil outlet end, the check valve 22 of Hydraulic Pump 21 are connected by oil pipe successively with accumulator 23, check valve 22 is connected with pressure relay 24, and described check valve 22, ball electromagnetic valve 26 are connected successively with oil cylinder 15, and Hydraulic Pump 21 is also connected with electrical motor 27.And ball electromagnetic valve 26 selects the electromagnetic valve of 2/2-way, make Zuo Weiwei that the hydraulic oil of accumulator 23 only can be allowed to flow into the check valve of oil cylinder 15, right position is the check valve that the hydraulic oil of oil cylinder 15 only can be allowed to flow into accumulator 23.Accumulator 3 comprises air chamber 31 and fluid chamber 32.Be filled with unreactable gas in air chamber 31, can hold hydraulic oil in fluid chamber 32, air chamber 31 is communicated with fluid chamber 32, namely when hydraulic oil is many, and the volume of fluid chamber 32 meeting compressed gas chamber 31, the i.e. volume of compressed inert.Pressure relay 24 comprises high-voltage switch gear 241 and low tension switch 242, and high-voltage switch gear 241 and low tension switch 242 are all electrically connected with electrical motor 27.
Hydraulic Station 2 also comprises by pass valve 28, return filter 29 and reset electromagnetic valve 210.Reset electromagnetic valve 210 selects two-position four-way solenoid valve, its A hydraulic fluid port is connected with the cavity of oil cylinder 15, B hydraulic fluid port is connected with the rod chamber of oil cylinder 15, P hydraulic fluid port is connected with the oil outlet end of Hydraulic Pump 21, T hydraulic fluid port is connected successively with return filter 29, fuel tank 25, in addition, by pass valve 28 is also connected between return filter 29 and Hydraulic Pump 21 oil outlet end.
With reference to figure 1-Fig. 3, fault detection mechanism 3 comprises diversion sheave 31, electronics rotational speed governor 32, pressing plate 33, pressing plate frame 34, spring 35, travel switch 36 and ward off rope support 37.Diversion sheave 31 is wound with steel rope during elevator lifting, one end of pressing plate 33 is connected with pressing plate frame 34, the other end is connected with spring 35, electronics rotational speed governor 32 and travel switch 36 are all electrically connected with ball electromagnetic valve 26, pressing plate 33 and travel switch 36 are installed in immediately below diversion sheave 31, electronics rotational speed governor 32 is arranged on diversion sheave 31 annex, and be in and can detect in the scope of rope speed, diversion sheave 31, electronics rotational speed governor 32, pressing plate frame 34, spring 35 and travel switch 36 are installed on ward off rope support 37.
When the present invention uses, ball electromagnetic valve 26 is in right position, reset electromagnetic valve 210 is in left position, oil cylinder 15 does not work, when the pressure relay 24 of Hydraulic Station 2 records the force value of the pressure in accumulator 23 lower than setting, the low tension switch 242 of pressure relay 24 can control electrical motor 27 and start, and drive Hydraulic Pump 21 to work, hydraulic oil enters into the hydraulic cavities 232 of accumulator 23, the volume of hydraulic cavities 232 becomes large, therefore the volume-diminished of air chamber 231, pressure gas in air chamber 231 is compressed, hydraulic energy transfer is interiorly can be stored in accumulator 23, after a period of time, when pressure relay 24 records force value higher than setting of pressure in accumulator 23, now, the high-voltage switch gear 241 of pressure relay 24 can control electrical motor 27 and close, Hydraulic Pump 21 no longer works, hydraulic oil stops entering into accumulator 23 again, accumulator 23 is made to maintain a constant pressure.
Be in the process of normal operation at elevator, the energy in accumulator 23 may be oversize and consume due to the time, but rely on the detection of pressure relay 24, and accumulator 23 can constantly repeat said process and store certain energy.
When there is elevator rope break, diversion sheave 31 can drop and be pressed on pressing plate 33, spring 35 compresses, pressing plate 33 is pressed on travel switch 36, travel switch 36 can feed back signal to ball electromagnetic valve 26, or when there is car 4 velocity anomaly, electronics rotational speed governor 32 can detect the velocity anomaly of steel cable on diversion sheave 31, electronics rotational speed governor 32 also can feed back signal to ball electromagnetic valve 26, and the ball electromagnetic valve 26 receiving above-mentioned arbitrary feedback signal can be switched to left position, the hydraulic oil of accumulator 23 enters into oil cylinder 15, the piston rod 155 of oil cylinder 15 stretches out, down move in one end of drivening rod 13, now, because connecting rod base 14 becomes a fulcrum, the other end of connecting rod 13 then up moves, pull bar 12 is driven up to move, the safety tongs 11 be connected with pull bar 12 is tightened up, the locked car 4 of safety tongs 11, elevator is stopped.
After the fault of elevator is excluded, switch back electromagnetic valve 210 is to right position, and hydraulic oil is got back to fuel tank 25 from the cavity flow of oil cylinder 15, and the piston rod 155 of oil cylinder 15 is retracted, up move in one end of drivening rod 13, now, because connecting rod base 14 becomes a fulcrum, the other end of connecting rod 13 then down moves, pull bar 12 is driven down to move, the safety tongs 11 be connected with pull bar 12 is relaxed, the no longer locked car 4 of safety tongs 11, and elevator recovers normal work.Structure of the present invention is simple, safe and reliable, and simple to operate, easy to maintenance.
Above-described is only some embodiments of the present invention.For the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (10)
1. hydraulic electronic safety tongs system, wherein, comprise safety tongs drag link mechanism (1), Hydraulic Station (2), fault detection mechanism (3) and car (4), described safety tongs drag link mechanism (1) is connected with Hydraulic Station (2), described Hydraulic Station (2) and fault detection mechanism (3) are electrically connected, and described safety tongs drag link mechanism (1), Hydraulic Station (2) and fault detection mechanism (3) are installed on car (4).
2. hydraulic electronic safety tongs system according to claim 1, wherein, described safety tongs drag link mechanism (1) comprises safety tongs (11), pull bar (12), connecting rod (13), connecting rod base (14), oil cylinder (15) and cylinder rack (16), described safety tongs (11), pull bar (12), connecting rod (13) is connected successively with oil cylinder (15), described connecting rod (13) is arranged on connecting rod base (14), described oil cylinder (15) is arranged on oil cylinder seat (16), described safety tongs (11), connecting rod base (14) and oil cylinder seat (16) are installed on car (4).
3. hydraulic electronic safety tongs system according to claim 2, wherein, described Hydraulic Station (2) comprises Hydraulic Pump (21), check valve (22), accumulator (23), pressure relay (24), fuel tank (25), ball electromagnetic valve (26) and electrical motor (27), described Hydraulic Pump (21) is connected with electrical motor (27), and its oil inlet end is connected with fuel tank (25), the oil outlet end of described Hydraulic Pump (21), check valve (22) is connected by oil pipe successively with accumulator (23), described check valve (22) is connected with pressure relay (24), described check valve (22), ball electromagnetic valve (26) is connected successively with oil cylinder (15).
4. hydraulic electronic safety tongs system according to claim 3, wherein, described fault detection mechanism (3) comprises diversion sheave (31), electronics rotational speed governor (32), pressing plate (33), pressing plate frame (34), spring (35), travel switch (36) and ward off rope support (37), one end of described pressing plate (33) is connected with pressing plate frame (34), the other end is connected with spring (35), described electronics rotational speed governor (32) and travel switch (36) are all electrically connected with ball electromagnetic valve (26), described pressing plate (33) and travel switch (36) are installed in immediately below diversion sheave (31), described diversion sheave (31), electronics rotational speed governor (32), pressing plate frame (34), spring (35) and travel switch (36) are installed on ward off rope support (37).
5. hydraulic electronic safety tongs system according to claim 2, wherein, the riser (142) that described connecting rod base (14) comprises connecting rod base plate (141) and is fixedly connected with connecting rod base plate (141), described riser (142) is provided with the first groove (1421), and described first groove (1421) and connecting rod (13) match.
6. hydraulic electronic safety tongs system according to claim 2, wherein, described oil cylinder (15) comprises oil cylinder base plate (151), cylinder body (152), cylinder cap (153), piston (154) and piston rod (155), described cylinder body (152) one end is connected with oil cylinder base plate (151), the other end is connected with cylinder cap (153), described piston (154) is connected with piston rod (155), described piston (154) is arranged in cylinder body (152), described piston rod (155) is provided with the second groove (1551), described second groove (1551) and connecting rod (13) match.
7. hydraulic electronic safety tongs system according to claim 2, wherein, described cylinder rack (16) comprises lower plate (161), column (162) and panel (163), described column (162) one end is fixedly connected with lower plate (161), the other end is fixedly connected with panel (163), and described oil cylinder (15) is arranged on panel (163).
8. hydraulic electronic safety tongs system according to claim 3, wherein, described Hydraulic Station (2) comprises by pass valve (28), return filter (29) and reset electromagnetic valve (210), oil outlet end, the by pass valve (28) of described Hydraulic Pump (21) are connected successively with return filter (29), described return filter (29) is connected with fuel tank (25), and described reset electromagnetic valve (210) is connected with Hydraulic Pump (21), return filter (29) and oil cylinder (15) respectively.
9. hydraulic electronic safety tongs system according to claim 3, wherein, described accumulator (23) comprises air chamber (231) and fluid chamber (232), and described air chamber (231) is communicated with fluid chamber (232).
10. hydraulic electronic safety tongs system according to claim 3, wherein, described pressure relay (24) comprises high-voltage switch gear (241) and low tension switch (242), and described high-voltage switch gear (241) and low tension switch (242) are all electrically connected with electrical motor (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519307.7A CN105035905B (en) | 2015-08-21 | 2015-08-21 | The safe forceps system of hydraulic electronic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519307.7A CN105035905B (en) | 2015-08-21 | 2015-08-21 | The safe forceps system of hydraulic electronic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105035905A true CN105035905A (en) | 2015-11-11 |
| CN105035905B CN105035905B (en) | 2017-09-15 |
Family
ID=54442964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510519307.7A Expired - Fee Related CN105035905B (en) | 2015-08-21 | 2015-08-21 | The safe forceps system of hydraulic electronic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105035905B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105883525A (en) * | 2016-06-08 | 2016-08-24 | 爱默生电梯有限公司 | Elevator falling preventing safety protection mechanism based on safety tongs operation |
| CN108249250A (en) * | 2016-12-29 | 2018-07-06 | 通力股份公司 | Avoid the method that undesirable safety equipment is threaded off in the safety stop system of elevator |
| CN112678643A (en) * | 2021-01-11 | 2021-04-20 | 安川双菱电梯有限公司 | Elevator overhauls protection safety device |
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| CN2360374Y (en) * | 1999-02-09 | 2000-01-26 | 陈毅凯 | Safety pliers of lifting crane cage |
| EP1140687B1 (en) * | 1998-12-22 | 2003-09-10 | Otis Elevator Company | Ropeless governor mechanism for an elevator car |
| CN102862893A (en) * | 2011-07-07 | 2013-01-09 | 刘小泉 | Lifting plier device of elevator car |
| CN203255828U (en) * | 2013-05-24 | 2013-10-30 | 浙江法斯特电梯有限公司 | Elevator safety tongs |
| CN103818797A (en) * | 2014-03-24 | 2014-05-28 | 袁昭成 | Speed limiter and safety gear linkage system based on elevator |
| CN204162219U (en) * | 2014-09-23 | 2015-02-18 | 杭州佰诚电梯配件有限公司 | A kind of pincers of the improved safety for elevator car head pulling apparatus |
| CN204297861U (en) * | 2014-12-16 | 2015-04-29 | 哈尔滨市三和佳美科技发展有限公司 | Safe fall-proof clamps |
| CN204873332U (en) * | 2015-08-20 | 2015-12-16 | 广东德奥电梯科技有限公司 | Hydraulic pressure safety tongs drag link mechanism |
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2015
- 2015-08-21 CN CN201510519307.7A patent/CN105035905B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1140687B1 (en) * | 1998-12-22 | 2003-09-10 | Otis Elevator Company | Ropeless governor mechanism for an elevator car |
| CN2360374Y (en) * | 1999-02-09 | 2000-01-26 | 陈毅凯 | Safety pliers of lifting crane cage |
| CN102862893A (en) * | 2011-07-07 | 2013-01-09 | 刘小泉 | Lifting plier device of elevator car |
| CN203255828U (en) * | 2013-05-24 | 2013-10-30 | 浙江法斯特电梯有限公司 | Elevator safety tongs |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105883525A (en) * | 2016-06-08 | 2016-08-24 | 爱默生电梯有限公司 | Elevator falling preventing safety protection mechanism based on safety tongs operation |
| CN108249250A (en) * | 2016-12-29 | 2018-07-06 | 通力股份公司 | Avoid the method that undesirable safety equipment is threaded off in the safety stop system of elevator |
| CN108249250B (en) * | 2016-12-29 | 2021-06-25 | 通力股份公司 | Method for avoiding undesired tripping of safety equipment in safety stop system of elevator |
| CN112678643A (en) * | 2021-01-11 | 2021-04-20 | 安川双菱电梯有限公司 | Elevator overhauls protection safety device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105035905B (en) | 2017-09-15 |
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