CN105016166A - Two-way safety gear used for preventing lift car from moving accidentally - Google Patents
Two-way safety gear used for preventing lift car from moving accidentally Download PDFInfo
- Publication number
- CN105016166A CN105016166A CN201510495261.XA CN201510495261A CN105016166A CN 105016166 A CN105016166 A CN 105016166A CN 201510495261 A CN201510495261 A CN 201510495261A CN 105016166 A CN105016166 A CN 105016166A
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- China
- Prior art keywords
- inner casing
- horizontal
- wedge
- shell
- guide rail
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Classifications
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- 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
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
- B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses a two-way safety gear used for preventing a lift car from moving accidentally. The two-way safety gear is clamped on a guide rail and comprises an inner shell arranged in an inner cavity of an outer shell. A horizontal positioning screw and a first horizontal movable screw with an elastic piece are arranged between the outer shell and the inner shell. Flat gear bodies are arranged on the portions, on the left side and the right side of the guide rail, of the inner cavity of the inner shell respectively. An upper wedge gear body and a lower wedge gear body which are symmetrical about the horizontal middle line of the inner shell are arranged on the portions, on the left side and the right side of the guide rail, of the inner cavity of the inner shell respectively. Double wedge blocks which are symmetrical about the horizontal middle line of the inner shell are arranged on the portions, on the left side and the right side of the guide rail, of the inner cavity of the inner shell respectively. The double wedge blocks are connected with the inner shell through second horizontal movable screws with elastic pieces. Movable push-pull rods extending out of a horizontal pipe cavity of the inner shell are arranged on the portions, on the rear right sides of the double wedge blocks, in the inner cavity of the inner shell. The contact faces between the front ends of the movable push-pull rods and the double wedge blocks are inclined faces. The movable push-pull rods are connected with safety gear transmission mechanisms through horizontal pin shafts. The two-way safety gear is simple in structure, safe and reliable. The braking force of the two-way safety gear directly acts on the lift car and the guide rail. The two-way safety gear has the good short-distance and short-time braking effect for the accidental movement of the lift car.
Description
Technical field
The present invention relates to lift facility security technology area, especially relating to a kind of for preventing the bidirectional safety tongs of car accidental movement.
Background technology
In the middle of skyscraper, Vertical Lift elevator is to be elevated quick, convenient obtaining a wide range of applications.Elevator safety clamp device is under the manipulation of velocity limiter, after the fault that hypervelocity, disconnected rope etc. are very serious appears in elevator, by urgent for car stop and a kind of safety device be clamped on guide rail.Generally be made up of housing, voussoir, jaw etc., and with velocity limiter collaborative work.Its principle of work is: after velocity limiter detects that elevator overspeed runs, and triggering secure pincers enter mode of operation, and jaw produces squeezing action to guide rail, and the friction force between safety tongs and guide rail increases rapidly, forces elevator stop motion.Traditional safety tongs, for preventing elevator overspeed operating energy loss, has good braking effect, safe and reliable characteristic, but it can not be used for preventing car accidental movement.When the passenger that stops at elevator enters or steps out car because elevator is out of control accidental movement, very easily cause human casualty accident, therefore need design specialized in the safety tongs preventing car accidental movement, make car within the very short Distance geometry time (as 0.2 meter, 0.5 second), lower than or far below command speed (as 0.8 metre per second (m/s), command speed be generally several meters to ten number metre per second (m/s)s) time stop.
Summary of the invention
The invention provides a kind of for preventing the bidirectional safety tongs of car accidental movement, object is that solving conventional security pincers can not be used for preventing car accidental movement from causing the problem of safety misadventure.
For achieving the above object, the present invention can take following technical proposals:
Of the present invention for preventing the bidirectional safety tongs of car accidental movement, comprise front openings and be fastened on safety tongs body on guide rail, described safety tongs body comprises the inner casing be arranged in shell inner cavity, inner casing can on shell, slide in groove inside lower wall, described housing back wall is provided with rectangular aperture, described inner casing is provided with the horizontal tube chamber extended to outside described rectangular aperture, the horizontal location screw rod for locating inner casing is provided with on the left of shell, be provided with end winding support on the right side of shell and be connected to the first horizontal anomalous movement screw rod in interior shell side wall, described first horizontal anomalous movement screw rod is provided with the first elastic component between inner casing and shell,
The upper and lower wedge caliper and dual-wedge that to be provided with on the right side of described guide rail and to be symmetrical in inner casing horizontal central line is positioned in described inner casing inner chamber, dual-wedge can slide in the groove inside the upper and lower wall of inner casing, slide in the groove that upper and lower wedge caliper can be formed at the guide plate being installed on dual-wedge front and rear end, be positioned on the left of described guide rail and be provided with flat pliers body; Described upper and lower wedge caliper structure is identical, and upper wedge caliper is connected with inner casing top by return spring; Described dual-wedge is connected with inner casing by the second horizontal anomalous movement screw rod, and described second horizontal anomalous movement screw rod one end is fixed in dual-wedge, and the other end to extend to outside inner casing and is socketed and is provided with the second elastic component; The upper and lower wedge surface of described dual-wedge respectively with corresponding upper and lower wedge caliper inclination contact, the angle α of its inclined contact surface and horizontal direction is acute angle;
In described inner casing inner chamber, be positioned at described dual-wedge right lateral side be provided with the mobile pull bar extended to outside described horizontal tube chamber, the contact surface of described mobile pull bar front end and described dual-wedge is inclined-plane, and mobile pull bar is connected with safety tongs transmission device by horizontal bearing pin.
The dip plane of described dual-wedge is provided with horizontal roller.
Described shell outer right wall is provided with car accidental movement detector switch, described inner casing outer right wall is fixedly installed the car accidental movement detector switch trigger shaft extended to outside shell.
Disc spring is provided with between described flat pliers body and described inner casing.
Provided by the invention for preventing the bidirectional safety tongs of car accidental movement, structure is simple, safe and reliable.Can be arranged on easily on car upper beam or column, stop power is made to act directly on car and guide rail, the stop effect of traditional anti-overspeed safety tongs can not only be reached, and car is met accident mobile there is good short range, short time stop effect.Owing to there is not velocity measuring and feedback procedure, effectively shorten the distance of car accidental movement.Employing of the present invention and the perpendicular mobile pull bar of elevator service direction, as horizontal trigger unit, when mobile pull bar enters or exits inner casing, can make safety tongs enter or exit the readiness for action preventing car accidental movement; When safety tongs is in readiness for action, the movement if car meets accident, by the interaction between the brake components such as dual-wedge and upper and lower wedge caliper, inner casing, the flat pliers body of guide rail both sides and upper and lower wedge caliper can be made to hold guide rail tightly at short notice, reach the object of car accidental movement being carried out to stop.In addition, the present invention can also be connected with the transmission device of gate interlock easily, stops car and to meet accident the mobile pernicious safety misadventure caused.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the birds-eye view in A-A face in Fig. 1.
Detailed description of the invention
As Fig. 1, shown in 2, of the present invention for preventing the bidirectional safety tongs of car accidental movement, comprise front openings and be fastened on safety tongs body on guide rail 1, described safety tongs body comprises the inner casing 3 be arranged in shell 2 inner chamber, described inner casing 3 can on described shell 2, slide in groove 24 inside lower wall, described shell 2 rear wall offers rectangular aperture 4, described inner casing 3 is provided with the horizontal tube chamber 5 extended to outside described rectangular aperture 4, the horizontal location screw rod 6 for locating inner casing 3 is provided with on the left of shell 2, be provided with end winding support on the right side of shell 2 and be connected to the first horizontal anomalous movement screw rod 7 in inner casing 3 sidewall, described first horizontal anomalous movement screw rod 7 is provided with the first elastic component 8 between inner casing 3 and shell 2,
Be positioned to be provided with on the right side of described guide rail 1 in described inner casing 3 inner chamber and be symmetrical in the upper of inner casing 3 horizontal central line, hyposphene caliper 9, 10 and dual-wedge 11, described dual-wedge 11 can on inner casing 3, slide in groove 25 inside lower wall, on described, hyposphene caliper 9, before 10, the groove being parallel to inclined-plane is carved with below, before guide plate 23 is arranged on dual-wedge 11, aft end face is provided with along the inside flanging in dual-wedge 11 inclined-plane, on described flanging embeds, hyposphene caliper 9, in the groove of 10, on, hyposphene caliper 9, 10 can slide along described flanging, be provided with flat pliers body 12 being positioned on the left of described guide rail 1, described upper and lower wedge caliper 9,10 structure is identical, and upper wedge caliper 9 is connected with inner casing 3 top by return spring 13, described dual-wedge 11 is connected with inner casing 3 by the second horizontal anomalous movement screw rod 14, and described second horizontal anomalous movement screw rod 14 one end is fixed in dual-wedge 11, and the other end to extend to outside inner casing 3 and is socketed and is provided with the second elastic component 15, the upper and lower wedge surface of described dual-wedge 11 respectively with corresponding upper and lower wedge caliper 9,10 inclination contact, the angle α of its inclined contact surface and horizontal direction is acute angle,
The mobile pull bar 17 being provided with on the right side of described dual-wedge 11 and extending to outside described horizontal tube chamber 5 is positioned in described inner casing 3 inner chamber, the contact surface of described mobile pull bar 17 front end and described dual-wedge 11 is inclined-plane, and mobile pull bar 17 is connected with safety tongs transmission device 19 by horizontal bearing pin 18.
Above-mentioned first elastic component 8 and the second elastic component 15 are spring, also can be the elastic bodys such as elastomer.
The dip plane of dual-wedge 11 is inlaid with horizontal roller 20, is conducive to reducing the resistance that upper and lower wedge caliper 9,10 moves relative to dual-wedge 11, the distance of car accidental movement can be effectively reduced.
Described shell 2 outer right wall is provided with car accidental movement detector switch 21, described inner casing 3 outer right wall is fixedly installed the car accidental movement detector switch trigger shaft 22 extended to outside shell 2.When car meets accident mobile, car accidental movement detector switch trigger shaft 22 touches car accidental movement detector switch 21, sends signal cut elevator power supply, prevents elevator from continuing mobile generation serious accident.
Between described flat pliers body 12 and described inner casing 3, disc spring 16 can also be set;
Above-mentioned safety tongs transmission device 19 links with elevator cage door, the switching motion of gate can be replaced into the clutch action of safety tongs, mobile pull bar 17 specifically advances or pull-out to safety tongs inside by this clutch action, thus makes safety tongs of the present invention enter or exit the readiness for action preventing car accidental movement.
When gate is closed completely, the inclined surface of mobile inclined-plane, pull bar 17 front end and dual-wedge 11 is fitted, and be in pull-out and put in place state, the present invention is in initial condition.Now, flat pliers body 12 and upper and lower wedge caliper 9,10 all and between guide rail 1 are reserved with enough gaps, and guide rail 1 can be passed through smoothly, and elevator can normal start-up and operation.
When car opens the door, mobile pull bar 17 advances by safety tongs transmission device 19 in inner casing 3, the slope driving dual-wedge 11 of mobile pull bar 17 front end to left movement, thus makes dual-wedge 11 drive upper and lower wedge caliper 9,10 direction guiding rail 1 direction to extrude through horizontal roller 20; When mobile pull bar 17 is advanced to certain depth, upper and lower wedge caliper 9,10 all contacts with forming surface between guide rail 1, and the second horizontal anomalous movement screw rod 14 is moved to the left with dual-wedge 11 therebetween, and the second spring 15 outside inner casing 3 is compressed; Mobile pull bar 17 continues to advance, mobile pull bar 17 is forced to move right along horizontal bearing pin 18, drive inner casing 3 to move right simultaneously, direction guiding rail 1 is close gradually to be now arranged in the flat pliers body 12 of inner casing 3, the first spring 8 between inner casing 3 and shell 2 is compressed, inclined plane part to mobile pull bar 17 is advancing to the position completely, and the planar portions of its planar portions and dual-wedge 11 is fitted, and this extruding moving process terminates; Now, the distance of aperture just for enabling the head shoulder of people pass in and out car of elevator cage door, the upper and lower wedge caliper 9,10 of Lock Part contacts with forming surface between guide rail 1, but still keep reserving gaps between flat pliers body 12 and guide rail 1, making safety tongs enter can meet accident the mobile readiness for action braked to car at any time.
In the standby state, gate continues to open, if open period car completely to gate not meet accident movement, thereafter the closing movement of gate will make mobile pull bar 17 exit inner casing 3, above-mentioned each parts carry out with aforementioned activities rightabout motion thereupon, until when gate is closed to aperture just for making the head shoulder of people can not pass in and out the distance of car, safety tongs returns to initial condition; If open period car generation accidental movement up or down at gate, such as, when there occurs accidental movement upwards, be arranged on the synchronous upward movement of the present invention on car, upper wedge caliper 9 is subject to friction retardance and dual-wedge 11 move toward one another of guide rail 1, extruded to the right by horizontal roller 20 pairs of dual-wedges 11, mobile pull bar 17 is forced to continue to move right along horizontal bearing pin 18, drive inner casing 3 to move right simultaneously, first spring 8 continues to be compressed, the flat pliers body 12 being now arranged in inner casing 3 continue direction guiding rail 1 near and contact; In the process, when inner casing 3 moves right, hyposphene caliper 10 moves right with guide plate 23 and leaves guide rail 1, car accidental movement detector switch trigger shaft 22 moves right thereupon simultaneously, trigger car accidental movement detector switch 21, send signal control elevator safety loop and drive host power supply to disconnect, elevator is shut down can not be restarted; Car moves on continuing, and the pressure of the flat pliers body 12 contacted with guide rail 1 and upper wedge caliper 9 pairs of guide rails 1 increases rapidly, forces car to stop mobile, ensures the safety of discrepancy car personnel.Between flat pliers body 12 and inner casing 3, disc spring 16 can also be installed, when stop deceleration/decel is close to tolerance limit value, the pressure of flat pliers body 12 and upper wedge caliper 9 pairs of guide rails 1 can be slowed down, make car relatively slowly stop, alleviate the stop impulsive force to passenger in car.When there occurs downward accidental movement, working process of the present invention is similar to said process, and difference is only that hyposphene caliper 10 is subject to friction retardance and dual-wedge 11 move toward one another of guide rail 1, and upper wedge caliper 9 leaves guide rail 1.
The present invention adopts suitable batch-type transmission mechanism, can be arranged on easily on car upper beam or column, stop power is made to act directly on car and guide rail, the stop effect of traditional anti-overspeed safety tongs can not only be reached, and car is met accident mobile there is good short range, short time stop effect.Owing to there is not velocity measuring and feedback procedure, effectively shorten the distance of car accidental movement.
Claims (4)
1., for preventing a bidirectional safety tongs for car accidental movement, comprising front openings and being fastened on safety tongs body on guide rail (1), it is characterized in that:
Described safety tongs body comprises the inner casing (3) be arranged in shell (2) inner chamber, described shell (2) rear wall is provided with rectangular aperture (4), described inner casing (3) is provided with the horizontal tube chamber (5) extended to outside described rectangular aperture (4), shell (2) left side is provided with the horizontal location screw rod (6) for locating inner casing (3), shell (2) right side is provided with end winding support and is connected to the first horizontal anomalous movement screw rod (7) in inner casing (3) sidewall, described first horizontal anomalous movement screw rod (7) is provided with the first elastic component (8) be positioned between inner casing (3) and shell (2),
In described inner casing (3) inner chamber, be positioned at described guide rail (1) right side be provided with the upper and lower wedge caliper (9,10) and dual-wedge (11) that are symmetrical in inner casing (3) horizontal central line, be positioned at described guide rail (1) left side and be provided with flat pliers body (12); Described upper and lower wedge caliper (9,10) structure is identical, and upper wedge caliper (9) is connected with inner casing (3) top by return spring (13); Described dual-wedge (11) is connected with inner casing (3) by the second horizontal anomalous movement screw rod (14), described second horizontal anomalous movement screw rod (14) one end is fixed in dual-wedge (11), and the other end extends to inner casing (3) outside and socket is provided with the second elastic component (15); The upper and lower wedge surface of described dual-wedge (11) respectively with corresponding upper and lower wedge caliper (9,10) inclination contact, the angle α of its inclined contact surface and horizontal direction is acute angle;
In described inner casing (3) inner chamber, be positioned at described dual-wedge (11) right side be provided with the mobile pull bar (17) extended to outside described horizontal tube chamber (5), the contact surface of described mobile pull bar (17) front end and described dual-wedge (11) is inclined-plane, and mobile pull bar (17) is connected with safety tongs transmission device (19) by horizontal bearing pin (18).
2. according to claim 1 for preventing the bidirectional safety tongs of car accidental movement, it is characterized in that: the dip plane of described dual-wedge (11) is provided with horizontal roller (20).
3. according to claim 1 for preventing the bidirectional safety tongs of car accidental movement, it is characterized in that: in described shell (2) outer right wall, be provided with car accidental movement detector switch (21), described inner casing (3) outer right wall is fixedly installed car accidental movement detector switch trigger shaft (22) extended to outside shell (2).
4. according to claim 1 for preventing the bidirectional safety tongs of car accidental movement, it is characterized in that: between described flat pliers body (12) and described inner casing (3), be provided with disc spring (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510495261.XA CN105016166B (en) | 2015-08-13 | 2015-08-13 | Two-way safety gear used for preventing lift car from moving accidentally |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510495261.XA CN105016166B (en) | 2015-08-13 | 2015-08-13 | Two-way safety gear used for preventing lift car from moving accidentally |
Publications (2)
| Publication Number | Publication Date |
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| CN105016166A true CN105016166A (en) | 2015-11-04 |
| CN105016166B CN105016166B (en) | 2017-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510495261.XA Expired - Fee Related CN105016166B (en) | 2015-08-13 | 2015-08-13 | Two-way safety gear used for preventing lift car from moving accidentally |
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| CN (1) | CN105016166B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105905739A (en) * | 2016-06-08 | 2016-08-31 | 中国船舶重工集团公司第七�三研究所 | Dual-purpose bidirectional safety tongs preventing accidental movement and overspeed |
| CN106219351A (en) * | 2016-08-30 | 2016-12-14 | 浙江西子富沃德电机有限公司 | A kind of bidirectional safety tongs |
| CN106241549A (en) * | 2016-08-30 | 2016-12-21 | 浙江西子富沃德电机有限公司 | A kind of elevator bidirectional safety tongs |
| CN109911739A (en) * | 2019-03-18 | 2019-06-21 | 杭州优迈科技有限公司 | A kind of bidirectional safety tongs for elevator and elevator |
| CN112173913A (en) * | 2020-10-23 | 2021-01-05 | 晋江华菱电梯有限公司 | Safety elevator |
| CN114249204A (en) * | 2020-09-24 | 2022-03-29 | 湖南大举信息科技有限公司 | Safety tongs for multi-car parallel elevator |
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| JP2011105461A (en) * | 2009-11-18 | 2011-06-02 | Hitachi Ltd | Braking device of elevator |
| CN204958046U (en) * | 2015-08-13 | 2016-01-13 | 卫小兵 | A two -way safety tongs for preventing car is unexpected to be removed |
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| CN101028900A (en) * | 2001-06-29 | 2007-09-05 | 三菱电机株式会社 | Emergency brake of elevator |
| CN2656380Y (en) * | 2003-09-27 | 2004-11-17 | 叶时光 | Bidirectional safety pincers for elevator |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105905739A (en) * | 2016-06-08 | 2016-08-31 | 中国船舶重工集团公司第七�三研究所 | Dual-purpose bidirectional safety tongs preventing accidental movement and overspeed |
| CN106219351A (en) * | 2016-08-30 | 2016-12-14 | 浙江西子富沃德电机有限公司 | A kind of bidirectional safety tongs |
| CN106241549A (en) * | 2016-08-30 | 2016-12-21 | 浙江西子富沃德电机有限公司 | A kind of elevator bidirectional safety tongs |
| CN106219351B (en) * | 2016-08-30 | 2018-10-02 | 浙江西子富沃德电机有限公司 | a kind of bidirectional safety tongs |
| CN106241549B (en) * | 2016-08-30 | 2019-01-11 | 浙江西子富沃德电机有限公司 | A kind of elevator bidirectional safety tongs |
| CN109911739A (en) * | 2019-03-18 | 2019-06-21 | 杭州优迈科技有限公司 | A kind of bidirectional safety tongs for elevator and elevator |
| CN109911739B (en) * | 2019-03-18 | 2024-02-09 | 杭州优迈科技有限公司 | Bidirectional safety tongs for elevator and elevator |
| CN114249204A (en) * | 2020-09-24 | 2022-03-29 | 湖南大举信息科技有限公司 | Safety tongs for multi-car parallel elevator |
| CN112173913A (en) * | 2020-10-23 | 2021-01-05 | 晋江华菱电梯有限公司 | Safety elevator |
| CN112173913B (en) * | 2020-10-23 | 2022-03-15 | 晋江华菱电梯有限公司 | Safety elevator |
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| CN105016166B (en) | 2017-04-12 |
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Granted publication date: 20170412 Termination date: 20180813 |