CN105314495A - Bottom safe device for elevator car - Google Patents
Bottom safe device for elevator car Download PDFInfo
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- CN105314495A CN105314495A CN201410377974.1A CN201410377974A CN105314495A CN 105314495 A CN105314495 A CN 105314495A CN 201410377974 A CN201410377974 A CN 201410377974A CN 105314495 A CN105314495 A CN 105314495A
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- Maintenance And Inspection Apparatuses For Elevators (AREA)
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Abstract
The invention discloses a bottom safe device for an elevator car. The bottom safe device comprises a toe guard, a buffer striking block, a linking mechanism and a toe guard hook, wherein the toe guard is rotationally fixed at the bottom of the elevator car through a first hinge, and has an unfolding state and a folding state; the buffer striking block is rotationally fixed at the bottom of the elevator car through a second hinge and has an unfolding state and a folding state; the linking mechanism is a rigid part; one end of the linking mechanism is connected with the toe guard through a third hinge, and other end of the linking mechanism is connected with the buffer striking block or the bottom of the elevator car through a fourth hinge; due to the linking mechanism, the toe guard and the buffer striking block can be simultaneously positioned in the unfolding state or the folding state; the toe guard hook is fixed at the bottom, close to a car door, of the elevator car; when the toe guard is positioned in the folding state, the toe guard hook hooks the toe guard for keeping the toe guard unchanged in the folding state. The invention provides the toe guard and the buffer striking block which can be synchronously unfolded and folded; the toe guard and the buffer striking block can be applied to the environment of shallow pits.
Description
Technical field
The application relates to the safety device bottom a kind of lift car, particularly relates to toeguard and energy disperser collision block.
Background technology
Refer to Fig. 1, lift car 10 along car guide rail 20 up-and-down movement in elevator hoistways 30, and is stopped at each elevator floor stops 40 as required.In the bottom of lift car 10, adjacent car door side has the toeguard 11 extended vertically downward, and this is one piece of sheet metal, and have towards the inclined-plane in elevator hoistways 30 direction at end, bottom-to-top-height is not less than 750mm.When lift car 10 to rest on because of fault non-landing position (being such as positioned at above a certain stop) need save passenger leave lift car 10 time, elevator toe guard 11 crashes into elevator hoistways 30 for preventing passenger.Middle position in the bottom of lift car 10 also has energy disperser collision block 12, and this is a rigid element to downward-extension, such as, be steel plate.Corresponding, be also provided with car buffer 32 at elevator hoistways pit 31, this is elastomeric element or hydraulic gear.When lift car 10 falls because of fault, energy disperser collision block 12 and car buffer 32 clash and absorb impact, prevent lift car 10 from directly clashing into elevator hoistways pit 31.
In order to ensure maintainer's safety, between the bottom surface of national Specification elevator hoistways pit and the minimum parts of lift car, at least leave the distance of 0.5m.But the regulation of some early stage old elevator hoistways pit depth often above-mentioned standard of out of reach of building, is called shallow pit.After old elevator expires and scraps, in order to meet national standard requirement, just needing that secondary construction is carried out to building and deepening elevator hoistways pit.But in practice, to deepen pit be difficult, and cost is also expensive, be therefore necessary to study a kind of shallow pit elevator space for maintenance inadequate time solution.
For the situation of shallow pit, exist and be arranged on bottom lift car or the safety device of elevator hoistways pit, such as following content disclosed in four parts of patent documentations.
The Chinese invention patent application that publication number is CN101061051A, publication date is on October 24th, 2007 discloses a kind of safety device for the protection of maintainer arranged in more shallow elevator shaft bottom.This safety device be arrange one in shaft bottom can level or the vertical dagger placed, in elevator normal operation, this dagger is positioned horizontally with the height reduced, and when personnel enter elevator, this dagger is sit upright thus eliminates operator in shaft bottom by the danger weighed wounded.The limitation of this application is that the energy disperser being positioned at elevator car (also claiming car) bottom is elastic buffer, is therefore only applicable to the situation of rated speed of lift within 1m/s.When rated speed of lift exceeds 1m/s, elevator industry uses ripe water bumper usually.If water bumper is arranged on bottom lift car, easily there is oil leakage phenomenon, and follow car vibrations for a long time and operation can make leakage of oil increase the weight of; In addition carry out routine maintenance to water bumper to refuel and state-detection will become and not easily carries out.
The Chinese utility model that Authorization Notice No. is CN202226493U, authorized announcement date is on May 23rd, 2012 discloses a kind of mechanical device for the protection of maintainer arranged in the pit of elevator hoistways.This mechanical device guarantees between lift car bottom surface and elevator hoistways pit, form a safety inspection space by the physical construction of series of complex.Car buffer is arranged in elevator hoistways pit by this application, thus may be used for the situation that rated speed of lift exceeds 1m/s; But the realization of its mechanism is comparatively complicated, and cost is not preponderated.
The Chinese invention patent application that application publication number is CN102701057A, Shen Qing Publication day is on October 3rd, 2012 discloses a kind of lift car toeguard.This toeguard by upper slice, bottom sheet forms, wherein bottom sheet is rotatable.When lift car is positioned at bottom, this toeguard presents retracted state; All the other time, this toeguard presents deployed condition.This application, in the macrocyclic operation of elevator, need face mechanism's frequent movement and the integrity problem produced, cost is not preponderated.It should be noted that, when installing new elevator in existing building, national standard allows manually to launch toeguard when overhauling elevator, is in retracted state at the seasonal toeguard of normal operation, like this can be simpler than the scheme of the automatic drawing back toeguard of this application, mechanism reliability is higher.
The Chinese utility model that Authorization Notice No. is CN201058781Y, authorized announcement date is on May 14th, 2008 discloses a kind of elevator shallow pit safety apparatus.This safety device comprise be arranged on elevator hoistways pit bearing energy disperser, also comprise the lift car toeguard of automatically retractable.These two parts independently run, and wherein bearing energy disperser is by artificial requirement-based handling, and toeguard is then configured with electric switch and detects and realize Automatic-expanding and withdrawal.
Summary of the invention
Technical problems to be solved in this application are to provide a kind of lift car bottom safety device, and toeguard wherein and energy disperser collision block not only can launch, but also can fold, and simple to operate, safety.
For solving the problems of the technologies described above, the application's lift car bottom safety device comprises:
---toeguard, is a block of metal plate, is rotatably mounted to the bottom of lift car near the position of car door by the first hinge; It is vertical deployed condition and the folded state after deviating from the rotation of elevator floor stops direction that this toeguard has overall;
---energy disperser collision block, is rigid element, is rotatably mounted to the bottom of lift car by the second hinge; This energy disperser collision block has vertical deployed condition and the folded state of level; When energy disperser collision block is deployed condition, relative with the position of the car buffer set by elevator hoistways pit;
---link gear is rigid element, and one end is by the 3rd chain connection toeguard, and the other end is by bottom the 4th chain connection energy disperser collision block or lift car; Link gear makes toeguard and energy disperser collision block be in deployed condition or folded state simultaneously;
---toeguard is linked up with, and is fixed on the bottom of lift car near the position of car door; When toeguard is folded state, toeguard hooks toeguard and makes it keep folded state constant.
The application's lift car bottom safety device provide a kind of can synchronous expansion, the toeguard of synchronous folding and energy disperser collision block, go for the situation that car buffer is elastic buffer or water bumper.When elevator normally works, described safety device is folded state.When elevator will overhaul, described safety device is deployed condition.Therefore, the application can be applicable to, in the environment of shallow pit, naturally also can be applicable in the environment of normal pit.In control, by the conversion realizing deployed condition and folded state manually, easy and simple to handle and safe and reliable, eliminate complicated circuit layout.
Accompanying drawing explanation
Fig. 1 is the overall schematic of elevator;
Fig. 2 a, Fig. 2 b are deployed condition, the folded state schematic diagram of the embodiment of the present application one respectively;
Fig. 3 a, Fig. 3 b are deployed condition, the folded state schematic diagram of the embodiment of the present application two respectively;
Fig. 4 is the principle schematic of a kind of embodiment that the toeguard in the application is linked up with.
Description of reference numerals in figure:
10 is lift car; 11 is toeguard; 12 is energy disperser collision block; 20 is car guide rail; 30 is elevator hoistways; 31 is elevator hoistways pit; 32 is car buffer; 40 is stop; 2 is suspension bracket at the bottom of sedan-chair; 3 is folding position switch; 4 is expanded position switch; 5 is spring; 7 is link gear; 8 is toeguard hook; 81 is mount pad; 82 is spring two; 83 is Removable hook; 91 is the first hinge; 92 is the second hinge; 93 is the 3rd hinge; 94 is the 4th hinge; 95 is bindiny mechanism.
Detailed description of the invention
Refer to Fig. 2 a and Fig. 2 b, this is the embodiment one of the application's lift car bottom safety device, and it comprises:
---toeguard 11 is a block of metal plate, is rotatably mounted to the bottom (namely sill bottom) of lift car 10 near the position of car door by the first hinge 91.The direction that this toeguard 11 can deviate from elevator floor stops 40 is rotated.When toeguard 11 launches, overall in vertical, vertically downward, only end deviates from elevator floor stops 40 direction to its base portion.When toeguard 11 folds, overall close to level, depend on that the first hinge 91 and toeguard link up with the line of the fixed position of 8.
---energy disperser collision block 12 is rigid element, is rotatably mounted to the bottom of lift car 10, is usually fixed on the bottom center of lift car 10 by the second hinge 92, is preferably fixed on suspension bracket 2 at the bottom of sedan-chair.This energy disperser collision block 12 is such as cylinder or cube, can with toeguard 11 equidirectional rotate.When energy disperser collision block 12 launches, overall in vertical, and its position is relative with the car buffer 32 being positioned at elevator hoistways pit 31.When energy disperser collision block 12 folds, overall in level.
---folding position switch 3, to be arranged on bottom lift car 1, such as, to be arranged on suspension bracket 2 at the bottom of sedan-chair.Folding position switch 3 only energy disperser collision block 12 is folding put in place time pressurized trigger, all the other time be non-pressured state.
---expanded position switch 4, to be arranged on bottom lift car 1, such as, to be arranged on suspension bracket 2 at the bottom of sedan-chair.Expanded position switch 4 only energy disperser collision block 12 launch put in place time pressurized trigger, all the other time be non-pressured state.
---spring 5, one end connects energy disperser collision block 12, and the other end connects 1 (such as suspension bracket 2 at the bottom of sedan-chair) bottom lift car, is positioned at the side that energy disperser collision block 12 deviates from elevator floor stops 40.Spring 5 pressurized always, and the compression degree of spring 5 is greater than the compression degree of the spring 5 when energy disperser collision block 12 launches when energy disperser collision block 12 folds.In other words, spring 5 will give energy disperser collision block 12 and to be transformed to from folded state the elastic force of deployed condition all the time.
---link gear 7 is rigid construction, and its one end connects toeguard 9 by the 3rd hinge 93, and its other end connects energy disperser collision block 12 by the 4th hinge 94.3rd hinge 93 is positioned at the below of the first hinge 91,4th hinge 94 is positioned at the below of the second hinge 92, therefore the line between the first hinge 91 and the second hinge 92 and link gear 7 non-intersect, the relative position of these four hinges ensure that energy disperser collision block 12 has identical rotation direction with toeguard 11.
---toeguard hook 8, is fixed on the bottom (namely sill bottom) of lift car 10 near the position of car door, and toeguard hook 8 is positioned at the inner side of toeguard 11 and toeguard links up with 8 than toeguard 11 further from elevator floor stops 40.
In this embodiment one, folding position switch 3, expanded position switch 4, spring 5 all can omit.
The method of work of the lift car bottom safety device of the embodiment one of the application is as follows:
When elevator normally runs, described safety device is the folded state shown in Fig. 2 b.Toeguard 11 with the first hinge 91 for axle turns to position close to level, and toeguard 11 fix by toeguard hook 8.Energy disperser collision block 12 with the second hinge 92 for axle turns to level attitude, and identical with the rotation direction of toeguard 11.Folding position switch 3 is pressured state, and expanded position switch 4 is non-pressured state.
When elevator prepares maintenance, toeguard 11 takes off from toeguard hook 8 from the doorway of elevator floor stops 40 by service personnel.Due to the elastic force of Action of Gravity Field and spring 5, toeguard 11 and energy disperser collision block 12 all will recover vertical deployed condition, as shown in Figure 2 a.Now expanded position switch 4 is pressured state, and folding position switch 3 is non-pressured state, defines the space for maintenance with certain altitude between energy disperser collision block 12 and car buffer 32, is enough to ensure service personnel safety in pit.
After upkeep operation completes, service personnel inwardly promotes toeguard 11 from the doorway of elevator floor stops 40 again, and the link gear 7 of rigidity drives the equidirectional rotation of energy disperser collision block 12 thereupon.Put in place when toeguard 11 is folding, service personnel is fixed in toeguard hook 8 again, and now described safety device is the folded state shown in Fig. 2 b.In folding process, spring 5 provides all the time and hinders folding elastic force.
Refer to Fig. 3 a and Fig. 3 b, this is the embodiment two of the application's lift car bottom safety device, and it comprises:
---toeguard 11 is a block of metal plate, is rotatably mounted to the bottom (namely sill bottom) of lift car 10 near the position of car door by the first hinge 91.The direction that this toeguard 11 can deviate from elevator floor stops 40 is rotated.When toeguard 11 launches, overall in vertical, vertically downward, only end deviates from elevator floor stops 40 direction to its base portion.When toeguard 11 folds, overall close to level, depend on that the first hinge 91 and toeguard link up with the line of the fixed position of 8.
---energy disperser collision block 12 is rigid element, is rotatably mounted to the bottom of lift car 10, is usually fixed on the bottom center of lift car 10 by the second hinge 92, is preferably fixed on suspension bracket 2 at the bottom of sedan-chair.This energy disperser collision block 12 is such as cylinder or cube, can rotate in reverse direction namely rotate towards the direction of elevator floor stops 40 with toeguard 11.When energy disperser collision block 12 launches, overall in vertical, and its position is relative with the car buffer 32 being positioned at elevator hoistways pit 31.When energy disperser collision block 12 folds, overall in level.
---folding position switch 3, to be arranged on bottom lift car 1, such as, to be arranged on suspension bracket 2 at the bottom of sedan-chair.Folding position switch 3 only energy disperser collision block 12 is folding put in place time pressurized trigger, all the other time be non-pressured state.
---expanded position switch 4, to be arranged on bottom lift car 1, such as, to be arranged on suspension bracket 2 at the bottom of sedan-chair.Expanded position switch 4 only energy disperser collision block 12 launch put in place time pressurized trigger, all the other time be non-pressured state.
---spring 5, one end connects energy disperser collision block 12, and the other end connects 1 (such as suspension bracket 2 at the bottom of sedan-chair) bottom lift car, is positioned at the side of energy disperser collision block 12 towards elevator floor stops.Spring 5 is always pressured state, and the compression degree of spring 5 is greater than the compression degree of the spring 5 when energy disperser collision block 12 launches when energy disperser collision block 12 folds.In other words, spring 5 will give energy disperser collision block 12 and to be transformed to from folded state the elastic force of deployed condition all the time.
---link gear 7 is rigid construction, and its one end connects toeguard 9 by the 3rd hinge 93, and its other end connects 1 (such as suspension bracket 2 at the bottom of sedan-chair) bottom lift car by the 4th hinge 94.Bottom lift car, 1 (such as suspension bracket 2 at the bottom of sedan-chair) has one section of guide rail (not shown), and the 4th hinge 94 is fixed in this guide rail slidably.4th hinge 94 also connects the side of energy disperser collision block 12 near elevator floor stops 40 by bindiny mechanism 95, bindiny mechanism 95 is for being connected to the rigid element on energy disperser collision block 12, and bindiny mechanism 95 and energy disperser collision block 12 lay respectively at the both sides of the second hinge 92.3rd hinge 93 is positioned at the below of the first hinge 91,4th hinge 94 is positioned at the top of the second hinge 92, therefore the line between the first hinge 91 with the second hinge 92 and link gear 7 crossing, the relative position of these four hinges ensure that energy disperser collision block 12 has contrary rotation direction with toeguard 11.
---toeguard hook 8, is fixed on the bottom (namely sill bottom) of lift car 10 near the position of car door, and toeguard hook 8 is positioned at the inner side of toeguard 11 and toeguard links up with 8 than toeguard 11 further from elevator floor stops 40.
In this embodiment two, folding position switch 3, expanded position switch 4, spring 5 all can omit.
The method of work of the lift car bottom safety device of the embodiment two of the application is as follows:
When elevator normally runs, described safety device is the folded state shown in Fig. 3 b.Toeguard 11 with the first hinge 91 for axle turns to position close to level, and toeguard 11 fix by toeguard hook 8.Energy disperser collision block 12 with the second hinge 92 for axle turns to level attitude, and with the direction of rotation of toeguard 11.4th hinge 94 is arranged in its fixed guide one end farthest away from elevator floor stops 40, and bindiny mechanism 95 drives energy disperser collision block 12 to fold.Folding position switch 3 is pressured state, and expanded position switch 4 is non-pressured state.
When elevator prepares maintenance, toeguard 11 takes off from toeguard hook 8 from the doorway of elevator floor stops 40 by service personnel.Due to the elastic force of Action of Gravity Field and spring 5, toeguard 11 and energy disperser collision block 12 all will recover vertical deployed condition, as shown in Figure 3 a.Now the 4th hinge 94 is arranged in its fixed guide one end closest to elevator floor stops 40; Expanded position switch 4 is pressured state, and folding position switch 3 is non-pressured state, defines the space for maintenance with certain altitude between energy disperser collision block 12 and car buffer 32, is enough to ensure service personnel safety in pit.
After Awaiting Overhaul operation completes, service personnel inwardly promotes toeguard 11 from the doorway of elevator floor stops again, and the link gear 7 of rigidity drives energy disperser collision block 12 counter-rotation thereupon.Put in place when toeguard 11 is folding, service personnel is fixed in toeguard hook 8 again, and now described safety device is the folded state shown in Fig. 3 b.In folding process, spring 5 provides all the time and hinders folding elastic force.
Toeguard hook 8 in above-mentioned two embodiments can have multiple implementation, only provides a kind of implementation exemplarily below.Refer to Fig. 4, toeguard hook 8 comprises mount pad 81, spring 2 82, Removable hook 83.Described mount pad 81 inside has a spatial accommodation, and spring 2 82 is located in this spatial accommodation, and a part for Removable hook 83 or entirety all can be positioned at this spatial accommodation.Spring 2 82 is fixed between a sidewall of the spatial accommodation of mount pad 81 and Removable hook 83.During spring 2 82 normal extension, a part for Removable hook 83 is positioned at the spatial accommodation of mount pad 81, and therefore spring 2 82 provides the elastic force that obstruction Removable hook 83 retracts this spatial accommodation completely.Removable hook 83 can reliably hook toeguard 11, such as, hook edge or the perforate or the annex on it etc. of toeguard 11.
These are only the preferred embodiment of the application, and be not used in restriction the application.For a person skilled in the art, the application can have various modifications and variations.Within all spirit in the application and principle, any amendment done, equivalent replacement, improvement etc., within the protection domain that all should be included in the application.
Claims (6)
1. a lift car bottom safety device, is characterized in that, comprising:
---toeguard, is a block of metal plate, is rotatably mounted to the bottom of lift car near the position of car door by the first hinge; It is vertical deployed condition and the folded state after deviating from the rotation of elevator floor stops direction that this toeguard has overall;
---energy disperser collision block, is rigid element, is rotatably mounted to the bottom of lift car by the second hinge; This energy disperser collision block has vertical deployed condition and the folded state of level; When energy disperser collision block is deployed condition, relative with the position of the car buffer set by elevator hoistways pit;
---link gear is rigid element, and one end is by the 3rd chain connection toeguard, and the other end is by bottom the 4th chain connection energy disperser collision block or lift car; Link gear makes toeguard and energy disperser collision block be in deployed condition or folded state simultaneously;
---toeguard is linked up with, and is fixed on the bottom of lift car near the position of car door; When toeguard is folded state, toeguard hooks toeguard and makes it keep folded state constant.
2. lift car bottom safety device according to claim 1, is characterized in that, also comprise:
---folding position switch, only when energy disperser collision block is folded state, pressurized triggers;
---expanded position switch, only when energy disperser collision block is deployed condition, pressurized triggers.
3. lift car bottom safety device according to claim 1, is characterized in that, also comprise:
---spring, connects bottom energy disperser collision block and lift car; Spring is pressurized always, and the compression degree of spring is greater than the compression degree of the spring when energy disperser collision block launches when energy disperser collision block folds.
4. lift car bottom safety device according to claim 1, is characterized in that, one end of link gear is by the 3rd chain connection toeguard, and the other end is by the 4th chain connection energy disperser collision block;
3rd hinge is positioned at the below of the first hinge, and the 4th hinge is positioned at the below of the second hinge;
When being transformed to folded state from deployed condition or being transformed to deployed condition from folded state, energy disperser collision block and toeguard have identical rotation direction.
5. lift car bottom safety device according to claim 1, is characterized in that, one end of link gear is by the 3rd chain connection toeguard, and the other end is by bottom the 4th chain connection lift car; Bottom lift car, have one section of guide rail, the 4th hinge is fixed in this guide rail slidably; 4th hinge also connects energy disperser collision block near the side of elevator floor stops by the bindiny mechanism of rigidity;
3rd hinge is positioned at the below of the first hinge, and the 4th hinge is positioned at the top of the second hinge;
When being transformed to folded state from deployed condition or being transformed to deployed condition from folded state, energy disperser collision block and toeguard have contrary rotation direction.
6. lift car bottom safety device according to claim 1, is characterized in that, toeguard hook comprises mount pad, spring two, Removable hook; Described mount pad inside has a spatial accommodation, and spring two is positioned at this spatial accommodation, and a part for Removable hook or entirety are positioned at this spatial accommodation; Spring two is fixed on one of the spatial accommodation of mount pad between sidewall and Removable hook; Removable hook is used for hooking toeguard.
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| CN201410377974.1A CN105314495B (en) | 2014-08-01 | 2014-08-01 | Lift car bottom safety device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108059063A (en) * | 2017-12-29 | 2018-05-22 | 杭州西奥电梯有限公司 | A kind of foldable toe guard of elevator car |
| CN108382942A (en) * | 2018-04-11 | 2018-08-10 | 速捷电梯有限公司 | A kind of double-deck elevator |
| CN108584642A (en) * | 2018-05-31 | 2018-09-28 | 浙江梅轮电梯股份有限公司 | A kind of elevator can stretch the toeguard of contraction automatically |
| CN109132745A (en) * | 2017-06-27 | 2019-01-04 | 上海三菱电梯有限公司 | Lift appliance |
| CN109987559A (en) * | 2019-04-30 | 2019-07-09 | 安徽柳工起重机有限公司 | A protective buffer device for preventing working bucket of aerial work platform from hitting the ground |
| CN110182672A (en) * | 2018-02-23 | 2019-08-30 | 奥的斯电梯公司 | Lift car toeguard system |
| CN110745674A (en) * | 2019-11-25 | 2020-02-04 | 重庆迈高电梯有限公司 | Shallow pit elevator pit overhauls uses safety arrangement |
| EP3722242A3 (en) * | 2019-03-20 | 2021-03-10 | Wittur Holding GmbH | Elevator for particularly small elevator shafts |
| CN115258876A (en) * | 2022-08-25 | 2022-11-01 | 法立奥电梯(广东)有限公司 | An elevator active safety buffer device |
| CN115535771A (en) * | 2021-03-24 | 2022-12-30 | 湖南大举信息科技有限公司 | Foot protection device and control method for multi-car intelligent parallel elevator |
| CN119306086A (en) * | 2024-10-08 | 2025-01-14 | 江苏省特种设备安全监督检验研究院 | A mobile buffer for elevator |
| CN119306086B (en) * | 2024-10-08 | 2025-10-17 | 江苏省特种设备安全监督检验研究院 | Portable buffer is used to elevator |
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