CN2298232Y - Safety device for elecvator - Google Patents
Safety device for elecvator Download PDFInfo
- Publication number
- CN2298232Y CN2298232Y CN 96213454 CN96213454U CN2298232Y CN 2298232 Y CN2298232 Y CN 2298232Y CN 96213454 CN96213454 CN 96213454 CN 96213454 U CN96213454 U CN 96213454U CN 2298232 Y CN2298232 Y CN 2298232Y
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- CN
- China
- Prior art keywords
- small
- sized
- lifting
- falling protector
- energy storage
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- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a small-sized anti-dropping device, which is a safety device arranged on a lifting container to prevent the lifting container from dropping when a main hoisting steel wire rope is broken. The small-sized anti-dropping device is suitable for small-sized vertically lifting mines and the lifting systems of building hoisters and meets the requirements of small volume, light weight, and reliable braking. The utility model is characterized in that the integral structure of the small-sized anti-dropping device is a box type structure to meet the requirement of mechanical strength; a variable pitch spring of an energy storage device prevents resonance to improve energy storage; a brake torque adjusting device, a lifting load automatic balancing device, and an automatic protecting device for the energy storage device meet the requirement of largely variable empty and heavy lifting load. Therefore, the small-sized mines and the lifting systems of the building hoisters realize rope breaking protection.
Description
The utility model prevents the parachute gear that lifting container falls when relating to the disconnected rope of mine mine shaft hoist system master hoisting cable, is commonly called as falling protector or cage dog.
Falling protector is a kind of being installed in the mine hoisting system on the lifting container, by the safety locking motion that rope device vises brake wire of catching of falling protector.The falling protector that large and medium-sized mine uses, weight is all more than 1900Kg, supporting energy disperser is a rigidity screw thread pinch device, weight is more than 750Kg, " coal mine special equipment atlas " the 70th page, the 85th page of introduction of " coal mine machinery " (coal managerial cadre technical training book series, Shanxi education of science press) has the principle of work and the technical characterictic of falling protector, and this falling protector is only applicable to big-and-middle-sized mine hoisting system.Large and medium-sized mine winder hoisting capacity is big, and lifting container all is a standard equipment, and it is little to promote load variations, therefore can realize standardized falling protector.And the most of elevator system of small mine adopt single cylinder lifting winch, and hoisting capacity is little, and the general load (comprising lifting container, goods, small-sized falling protector) that promotes is about 10000Kg, and this just requires small-sized falling protector weight the smaller the better.And the falling protector of existing standard, energy disperser only one of weight just restriction can not be applicable to small mine and building whim elevator system.
For sort this problem out, common way is the volume that reduces falling protector, alleviates the weight of falling protector, but for the standard falling protector, reducing volume and guarantee mechanical strength, is very difficult to satisfy the requirement of small mine elevator system weight, does not still have successful experience at present.
The purpose of this utility model is that a kind of equipment that is called small-sized falling protector will be provided, and it is little that it can satisfy the small mine hoisting capacity, and empty, heavy load changes requirement greatly, and it can reliably be braked when the disconnected rope of main hoisting cable, prevents that lifting container from falling.
The purpose of this utility model is achieved in that and changes falling protector channel-section steel body that heavy cast bearing frame carrying structure is the one-time formed case structure of steel plate; And with spring energy storage device, catch rope device, lever group, lifting arm etc. and all be installed in the box body as a whole, the both alternative channel-section steel of casing, can be used as the support bracket of lever shaft again, in order to reduce the impact that brake wire bears, be provided with spring oil pressure damping buffer in the upper end of brake wire, both can reduce the braking force that brake wire bears, prevent spring resonance, can reduce the volume and weight of energy disperser again.
The utility model adopts the one-time formed case structure of certain thickness steel plate, and the structure of primary standard falling protector has been done basic change, and is relatively simple for structure, because the decision of case structure self character realizes than being easier to so reduce volume and weight.Closed-center system has adopted variable-pitch spring, has solved the resonance problem of cylindrically coiled spring, has adopted the moment adjustable apparatus, satisfies sky, brings up again load up variation requirement greatly.
The concrete structure of utility model is provided by following embodiment and accompanying drawing thereof.
Fig. 1 is the front view of the small-sized falling protector that the utility model proposes;
Fig. 2 is the birds-eye view of the small-sized falling protector that the utility model proposes;
Fig. 3 is the cutaway view of the supporting energy disperser of the small-sized falling protector that the utility model proposes;
Fig. 4 is the small-sized falling protector core structure cutaway view that the utility model proposes shown in the figure;
Fig. 5 is the small-sized falling protector core structure principle chart that the utility model proposes shown in Figure 1;
Describe in detail according to the case structure of the small-sized falling protector that the utility model proposes and position relation, details and the service condition of other device below in conjunction with Fig. 1 and Fig. 2.
The utility model comprises the one-time formed body 2 of steel plate and catches the case structure integral body that rope device 8 constitutes, and device has main lifting arm 1, variable-pitch spring closed-center system 3, balance shaft 4, setting nut 5, hanger bar 6, lever group 7 and is supported in lever shaft 9 on the body in the casing.Fig. 1 and Fig. 2 demonstrate the structural relation of case structure and other device of the small-sized falling protector that the utility model proposes jointly, and case structure welds with certain material and certain thickness steel plate or thread connection forms, and Fig. 1 demonstrates the length of case structure with high.Fig. 2 demonstrates the wide and external form of case structure, and the centre of casing is moment control apparatus and variable-pitch spring closed-center system, and it is connected with the rope device of catching at two ends by lever, and what show among the figure is the mutual alignment relation of static dress attitude.
Mode of operation of the present utility model: lifting arm 1 is promoted action of gravity to top offset, the compressed energy-storage spring, spring energy storage device activation lever group 7 is rotated to stir around lever shaft 9 and is caught rope device 8 take-off the brake steel ropes, and the small-sized falling protector that the utility model proposes moves up and down with the instruction of lifting container according to elevator system.
Static is braking mode: when elevator system connects the disconnected rope of main hoisting cable of lifting arm 1, lifting arm 1 is promoted the combined action of gravity and closed-center system mechanical energy to bottom offset, closed-center system activation lever group 7 is rotated to stir around lever shaft 9 and is caught rope device 8 and arrest brake wire, thereby prevent that lifting container from because of the disconnected rope of main hoisting cable falls, causing the security insurance effect.
Describe the details and the service condition of the supporting energy disperser of the small-sized falling protector that the utility model proposes in detail below in conjunction with Fig. 3.
The supporting energy disperser of small-sized falling protector that the utility model proposes is shown by Fig. 3.Energy disperser is by cast casing, spring, and damping panel and the pull bar that connects brake wire are formed, and damping panel and pull bar are by being threaded, and damping panel separates from the centre with energy disperser housing inner chamber, Yi Bian be oil cabinet, Yi Bian be the operating room.Quiescence: energy disperser is by damping panel, and pull bar is by the gravity of spring load brake wire, and the gravity of steel rope is less, and length of spring compressed is less.Dynamically be mode of operation: when hoisting cable breaks, brake wire is arrested in the small-sized falling protector action that the utility model proposes, total lifting quality T and the combined action of acceleration/accel kinetic energy are in brake wire, act on energy disperser damping panel compression spring by brake wire, its pressure makes the hydraulic oil of operating room slowly drain into the deposit grease chamber by the damping hole on the damping panel, owing to produce damping phenomena, spring slowly compresses, braking procedure to the small-sized falling protector that the utility model proposes plays buffer action, when small-sized falling protector release when being static, the energy disperser carrying reduces to brake wire gravity and adds 1/2T, deflection of spring partly recovers, when small-sized falling protector brake off, buffer spring is reset to quiescence.
Energy disperser adopts the spring oleopneumatic dampening device to realize, has both prevented resonance, has alleviated weight again.
Describe details and service condition in detail below in conjunction with Fig. 4 and Fig. 5 according to the variable-pitch spring closed-center system lock torque control apparatus of the small-sized falling protector that the utility model proposes.
The variable-pitch spring closed-center system of the small-sized falling protector that the utility model proposes, lock torque control apparatus comprise and main hoisting cable bonded assembly T-shaped lifting arm 1 case structure body 2, variable-pitch spring closed-center system 3, setting nut 5 on balance shaft 4 balance shafts, hang the hanger bar 6 of lifting container, with closed-center system 3 bonded assembly lever groups 7, illustrating that each parts remains static is braking mode.
Balance shaft 4 lower internal thread connect with hanger bar 6, and upper external thread and setting nut 5 constitute rectangular opening and T-shaped lifting arm 1 free-running fit.Variable-pitch spring closed-center system 3 is hinged with lever group 7, and concentric fits is assemblied among the case structure body 2 jointly in lifting arm 1, balance shaft 4 outsides, and its characteristic line equation of the variable-pitch spring of closed-center system is with P=(0.1-0.2) F
2For suitable.
By the stroke of setting nut 5 scalable tee T lifting arms in balance shaft 4, the stroke of lifting arm equals closed-center system compression of spring stroke, the length of spring compressed stroke increases, the closed-center system energy storage capacity increases, being passed to the lock torque of catching rope device by the lever group also increases, then reduce on the contrary, so setting nut 5 promptly equals to regulate the lock torque of the small-sized falling protector that the utility model proposes.Hanger bar 6 is to rotate hanger bar 6 with the adjusting relation of balance shaft 4 screw threads, the upper-lower position of adjustable and balancing axle 4, and balance shaft 4 upper and lower displacements drive 3 upper and lower displacements of lifting arm 1 variable-pitch spring closed-center system, and its effect one is the variable-pitch spring of precompressed closed-center system; The 2nd, to replenishing of the effect of setting nut 5; The 3rd, by the lever group to catching the adjustment in rope device gap.
Describe in detail according to the lifting load automatic balance device of the small-sized falling protector that the utility model proposes and the details and the principle of work of variable-pitch spring closed-center system automatic safety device below in conjunction with Fig. 5.
This device comprises a main lift lever 1, case structure body 2, and variable pitch closed-center system 3, equalizer bar 4, setting nut 5, hanger bar 6, it is braking mode that diagram is in static.
T shown in the arrow is that total quality, G of promoting is for promoting load mass.Q is the quality of the small-sized falling protector that the utility model proposes, and P is a variable-pitch spring closed-center system energy storage capacity, and P ' is an equalizer bar carrying quality, and F ' is for promoting adjustment travel.
When promoting load mass G increase, lifting arm 1 drives variable-pitch spring closed-center system 3 to top offset, lifting arm adjustment travel F ' reduces, when setting nut 5 contacts with equalizer bar 4, F '＞0, equalizer bar carrying quality P ' equals zero, work as F '=0, during the critical conditions of P '=0, variable-pitch spring closed-center system energy P reaches the design predetermined value, when the G value continues to increase, because F '=0, equalizer bar carrying quality P ' increases, and equalizer bar 4 is equilibrated at lifting arm 1, hanger bar 6 and self with the G value that increases, and plays the self-equalizing effect of loading that promotes.
Adjust setting nut 5; change the size of F ' value; equal to change the compression stroke of closed-center system variable-pitch spring; because the value of F ' is determined according to promoting load mass G; increase when promoting load mass G; setting nut 5 drives spring energy storage device with lifting arm 1; to top offset; F ' reduces gradually; work as after F '=0, the variable-pitch spring of closed-center system is compressed to predetermined value, no matter promotes load mass G and how to change; equalizer bar 4 will promote load G automatically and be equilibrated at lifting arm 1; the effect of automatic protection variable-pitch spring closed-center system is played in hanger bar 6 and self.
Promoting load automatic balance device and closed-center system protects principle of work to be analyzed as follows with mathematic(al) representation automatically:
When G=0, T=P=Q F '＞0
During G=Δ G, T
1=P
1=Q+ Δ G F '＞0
During G=2 Δ G, T
2=P
2=Q+2 Δ G F '＞0
…… …… ……
During G=n Δ G, T
n=P
n=Q+n Δ G establishes F '=0
Work as F '=0, P '=0 o'clock is a borderline balance state
Represent by following bogie type:
T＝P
n+P’
According to bogie type as can be known:
P′↑→P
n↓→F′↑→P′↓→P
n↑→F′↓→P′↑→P
n↓……
When G=(n+1) Δ G, T
N+1=P
n+ Δ G
∵ F '=0, ∴ P
nConstant, P '=Δ G
When G=(n+2) Δ G, T
N+2=P
n+ 2 Δ G, P '=2 Δ G
…… …… ……
During G=(n+n) Δ G, T
N+n=P
n+ n Δ G, P '=n Δ G
Know by above-mentioned bogie type, when F '=0, G value increment P
nConstant, equalizer bar carrying quality P ' is with the increase of G value increment, is equilibrated on the balancing device that lifting arm 1, setting nut 5, hanger bar 6 and case structure body 2 form by equalizer bar 4, and the energy storage capacity of closed-center system is constant.
When G reduced, P ' reduced
When G＜n Δ G, P '=0, equalizer bar 4 does not stress
To sum up state; the balancing device of forming by equalizer bar 4 and lifting arm 1, setting nut 5, hanger bar 6, case structure body 2 and variable-pitch spring closed-center system 3; both played the lock torque regulating action; promote the effect of load self-equalizing, play the automatic protective effect of variable-pitch spring closed-center system again.
The realization of lock torque control apparatus, lifting load automatic balance device and variable-pitch spring closed-center system automatic safety device; can adopt hard connecting device such as balance shaft and equalizer bar; can adopt articulated manner; also can adopt soft connection such as devices such as round-link chain, messenger chain to realize, can play same effect.
Claims (3)
1. be installed on the small-sized falling protector on the vertical shaft hoisting container, it by spring energy storage device, catch rope device, the leverage that transmits lock torque forms.It is characterized in that spring energy storage device 3, catch rope device 8, lever group 7 is assemblied in the casing that is made of the one-time formed body 2 of steel plate jointly, forms whole case structure, and is and supporting with spring oil pressure damping buffer.
2. small-sized falling protector according to claim 1 is characterized in that the corollary apparatus energy disperser is installed on the upper end of brake wire, in case brake wire is arrested in the action of small-sized falling protector, spring oil pressure damping action realizes slowing down the brake wire impulsive force.
3. small-sized falling protector according to claim 1 is characterized in that the case structure that is made of the one-time formed body 2 of steel plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96213454 CN2298232Y (en) | 1996-06-06 | 1996-06-06 | Safety device for elecvator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96213454 CN2298232Y (en) | 1996-06-06 | 1996-06-06 | Safety device for elecvator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2298232Y true CN2298232Y (en) | 1998-11-25 |
Family
ID=33895781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96213454 Expired - Fee Related CN2298232Y (en) | 1996-06-06 | 1996-06-06 | Safety device for elecvator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2298232Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823661A (en) * | 2010-03-17 | 2010-09-08 | 郭自刚 | Elevator tractor with internal contracting brake provided with mechanical cushioning device |
| CN104444695A (en) * | 2014-12-13 | 2015-03-25 | 重庆和航科技股份有限公司 | Elevator buffer system with adaptive progress damping force |
| CN104444693A (en) * | 2014-11-30 | 2015-03-25 | 重庆和航科技股份有限公司 | Elevator buffering system with variable damping force |
| CN104477720A (en) * | 2014-11-30 | 2015-04-01 | 重庆和航科技股份有限公司 | Elevator system for variably buffering damping force |
| CN110806221A (en) * | 2018-08-06 | 2020-02-18 | 厦门雅迅网络股份有限公司 | MEMS sensor capable of defending resonance and resonance defending method thereof |
| CN111675149A (en) * | 2020-05-19 | 2020-09-18 | 沈阳新松机器人自动化股份有限公司 | Non-friction type lifting anti-falling mechanism |
-
1996
- 1996-06-06 CN CN 96213454 patent/CN2298232Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823661A (en) * | 2010-03-17 | 2010-09-08 | 郭自刚 | Elevator tractor with internal contracting brake provided with mechanical cushioning device |
| CN101823661B (en) * | 2010-03-17 | 2011-11-30 | 郭自刚 | Elevator tractor with internal contracting brake provided with mechanical cushioning device |
| CN104444693A (en) * | 2014-11-30 | 2015-03-25 | 重庆和航科技股份有限公司 | Elevator buffering system with variable damping force |
| CN104477720A (en) * | 2014-11-30 | 2015-04-01 | 重庆和航科技股份有限公司 | Elevator system for variably buffering damping force |
| CN104477720B (en) * | 2014-11-30 | 2017-02-22 | 重庆和航科技股份有限公司 | Elevator system for variably buffering damping force |
| CN104444695A (en) * | 2014-12-13 | 2015-03-25 | 重庆和航科技股份有限公司 | Elevator buffer system with adaptive progress damping force |
| CN110806221A (en) * | 2018-08-06 | 2020-02-18 | 厦门雅迅网络股份有限公司 | MEMS sensor capable of defending resonance and resonance defending method thereof |
| CN111675149A (en) * | 2020-05-19 | 2020-09-18 | 沈阳新松机器人自动化股份有限公司 | Non-friction type lifting anti-falling mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |