CN114955795A - Elevator lifting assembly and elevator system - Google Patents
Elevator lifting assembly and elevator system Download PDFInfo
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- CN114955795A CN114955795A CN202110200055.7A CN202110200055A CN114955795A CN 114955795 A CN114955795 A CN 114955795A CN 202110200055 A CN202110200055 A CN 202110200055A CN 114955795 A CN114955795 A CN 114955795A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/026—Attenuation system for shocks, vibrations, imbalance, e.g. passengers on the same side
- B66B11/0266—Passive systems
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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
- B66B5/28—Buffer-stops for cars, cages, or skips
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/02—Guideways; Guides
- B66B7/04—Riding means, e.g. Shoes, Rollers, between car and guiding means, e.g. rails, ropes
- B66B7/048—Riding means, e.g. Shoes, Rollers, between car and guiding means, e.g. rails, ropes including passive attenuation system for shocks, vibrations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
- B66F11/04—Lifting devices specially adapted for particular uses not otherwise provided for for movable platforms or cabins, e.g. on vehicles, permitting workmen to place themselves in any desired position for carrying out required operations
Abstract
The invention discloses an elevator lifting assembly, which comprises an elevator buffer device, wherein the elevator buffer device is provided with an elastic compression recoverable piece, is located on the bottom surface of a well pit and falls out of the vertical projection of a car; the elevator hoist assembly includes: the knock-out plate comprises a supporting end and a contact end, the supporting end is supported on an elastic compression recoverable piece of the elevator buffer device, and the contact end extends into the vertical projection of the elevator car for a certain distance. When the elevator runs and the bottom surface of the car is close to the bottom surface of the pit, the contact end is in contact with and bears the gravity and the inertia impact of the elevator car, the support end on the elastic compression restorable piece is supported on the elevator buffer device, the speed of the elevator car is buffered by relying on the elastic compression restorable piece to give reverse acting force to the elevator car, when the support end is pressed to the preset maximum compression value of the elastic compression restorable piece on the elevator buffer device, the elevator car is stable, the upper surface of the bottom of the elevator car and the ground of the bottom landing of the pit are basically flat, and the lower surface of the bottom of the elevator car is close to the bottom surface of the pit and reaches the preset minimum value.
Description
Technical Field
The invention relates to the field of elevators, in particular to an elevator lifting component capable of effectively reducing the civil engineering requirements of buildings, particularly the depth requirements of a pit, and not additionally increasing the civil engineering plane size requirements and an elevator system thereof.
Background
Existing elevator systems are typically provided with a buffer as a safety device, the buffer typically being disposed within the pit of the elevator hoistway. For example, 10.3 and 10.4 of the national standard GB7588-2003 "elevator manufacturing and installation safety code" stipulates the travel or deceleration of various buffers. In addition 10.5.1 it is specified that the elevator limit switch should be active before the car or counterweight (if any) contacts the buffer. When the elevator car touches the limit switch it means that the elevator car has exceeded the limit position for normal operation. Therefore, in order to meet the above requirements, the elevator shaft is usually designed with a pit with a certain depth for placing the buffer and for leaving a safety distance.
Most commonly, the constraint for calculating the minimum pit depth is the vertical distance between the lowest component at the bottom of the car (typically the car floor or safety gear) and the highest component fixed in the pit or pit of the hoistway. Due to the determinants of pit depth calculation, the height and the like of the pit depth calculation are relatively rigid, the flexibility is poor, and the requirement on the minimum pit depth is difficult to reduce. For example an elevator with a speed of 1m/s, the pit depth is usually up to 1.3 m. If the requirement of the elevator system on the depth of the civil engineering pit cannot be reduced, the civil engineering coping ability of the elevator is poor, and the use occasions of the elevator are limited. The elevator is particularly contradictory to the elevator installed in an old building and the elevator installed in a household villa. Among the existing solutions, one mode is to excavate the pit, the degree of difficulty is big with high costs, and another mode is to lift the bottom layer landing, and is not ideal to space requirement and convenience of use.
If the pit depth is to be reduced further in the case of reserve buffers, it is conceivable to compress the buffers when the elevator is normally run to the lowest floor level, for example in publication CN205772616U, and stops. However, in such a use situation, a number of technical problems are encountered, for example, in order to achieve safety in an emergency situation of the elevator, the force of the buffer in the prior art must be larger than the sum of the elevator car and the rated load to decelerate and stop the elevator. The buffer is compressed when the elevator normally runs and stops on a flat floor, and excessive force provides a new challenge to the normal leveling of the elevator and the comfort during the leveling, and the prior publication does not mention the challenge.
The technical solution mentioned in the publication CN205772616U is a passive buffering manner, and leveling is achieved completely by means of the acting force of the buffer on the car, which results in that the position of leveling at the bottom layer varies with the load in the car, the leveling precision is extremely low, and cannot meet the safety requirement, and there is a risk to passengers getting in and out of the car. Too big deceleration can lead to not good comfort when its two flat beds, even through some extra buffering modes also can lead to the car to shake from top to bottom when leveling and lead to not good comfort. Its three such passive modes can lead to the flat bed back elevator suspension system to lose tensile force, cause the safety risk on the one hand, and on the other hand is unfavorable for the restart of elevator.
Disclosure of Invention
The invention aims to solve the technical problem of providing an elevator lifting assembly and an elevator system thereof, which can effectively reduce the requirement of the elevator system on the depth of a civil foundation pit, do not additionally increase the requirement on the size of a civil foundation plane, and have simple structure and easy realization.
In order to solve the technical problem, the invention provides an elevator lifting assembly which vertically runs up and down along an elevator shaft, wherein the elevator comprises an elevator buffer device, an elastic compression recoverable piece is arranged on the elevator buffer device, and the elevator buffer device is located on the bottom surface of a pit of the shaft and falls out of the vertical projection of a lift car; the elevator hoist assembly includes:
the knock-out plate comprises a supporting end and a contact end, the supporting end is supported on an elastic compression recoverable piece of the elevator buffer device, and the contact end extends into the vertical projection of the elevator car for a certain distance; when the elevator runs, when the bottom surface of the lift car is close to the bottom surface of the pit, the contact end is in contact with and bears the gravity and the inertia impact of the lift car, the support end on the restorable part is elastically compressed by being supported on the lift buffer device, the speed of the lift car is buffered by relying on the elastically compressed restorable part to give the reverse acting force to the lift car, when the support end is pressed to the lift buffer device to elastically compress the restorable part for a preset maximum compression value, the lift car is stopped stably, the upper surface of the bottom of the lift car and the ground of a bottom layer landing are basically flat, and the lower surface of the bottom of the lift car is close to the bottom surface of the pit and reaches a preset minimum value.
Preferably, the beater plate is "Z" shaped or "U" shaped.
Preferably, the resiliently compressible resilient member of the elevator buffer is a hydraulic buffer.
Preferably, the elastically compressible restoring member of the elevator buffer is a hydraulic buffer capable of being compressed continuously and repeatedly.
Preferably, the hydraulic buffer is capable of returning from a compressed state to an initial free state in a short time after being unloaded.
Preferably, the hydraulic damper is provided with an electric switch for monitoring whether the hydraulic damper is restored to an initial free state.
Preferably, the contact ends contact and sustain an elevator car velocity of no more than 9 m/min against gravitational and inertial impacts of the elevator car just before the car descends to reach a bottom landing level.
Preferably, the predetermined maximum compression value S is the maximum travel S1 over which the resiliently compressible return member is compressible minus a reserve of 5-10 mm.
Preferably the lower surface of the car bottom is close to the pit floor and reaches a preset minimum value of 5-30 mm at S2.
Preferably, a gasket made of a buffer material is attached to a contact surface of the contact end of the beating plate and the bottom of the elevator car.
Preferably, the number of the elevator buffer devices is even and the elevator buffer devices are symmetrically arranged relative to the car when viewed in the vertical direction.
The invention also relates to an elevator system, which at least comprises a well, a traction rope, a driving device and a guide rail, and also comprises the elevator lifting assembly;
the traction rope, the guide rail and the elevator lifting assembly are arranged in a hoistway, the part of the hoistway below the bottom layer landing is a pit, and the bottommost plane of the hoistway is the bottom surface of the pit;
preferably, the lifting assembly is a car or a lifting platform.
Preferably, the traction rope can also be a traction belt or a traction chain.
Preferably, the guide rail can be an elevator guide rail, a profile guide, a machine-formed guide.
Preferably, the driving apparatus of the elevator system is a traction type or a winding type.
Preferably, the elevator system further comprises a speed limiter and a safety gear.
The invention can achieve the technical effects that:
1. the requirement of an elevator system on the depth of a civil engineering pit of a building can be effectively reduced, the response capability of an elevator is improved, the civil engineering waste of customers is avoided, and the space utilization rate is improved;
2. compared with other methods aiming at reducing the requirement of the elevator system on the depth of the civil foundation pit, the method has the advantages of simple structure, strong universality and high feasibility, and does not additionally increase the requirement on the size of the civil foundation pit;
3. can flexibly deal with the problems in the aspect of civil engineering pit depth, and is particularly suitable for the projects of old buildings additionally provided with elevators, home elevators, particularly upper-folding villas and complex house types of top buildings.
Drawings
Fig. 1 is a schematic view of an elevator system;
FIGS. 2 and 3 are schematic views of a first embodiment of the present invention;
FIGS. 4 and 5 are schematic views of a second embodiment of the present invention;
FIGS. 6 and 7 are schematic views of a third embodiment of the present invention;
FIG. 8 is a schematic view of a fourth embodiment of the present invention;
FIG. 9 is a schematic view of a fifth embodiment of the present invention;
FIG. 10 is a schematic view of a sixth embodiment of the present invention;
fig. 11 is a schematic view of a seventh embodiment of the present invention.
Wherein the reference numerals are as follows:
11 lifting channel 12 machine room
21 cage 21a platform
22 car side pulley 23 counterweight
24 counterweight side pulley 25 top fixed pulley
26 lifting platform 26a lifting platform bottom
31 drive 32 guide pulley
41 hauling rope 42 compensating rope
51 cage side rope end 52 counter weight side rope end
53 control device 54 car side guide rail
55 counterweight side guide rail 61 prior art elevator buffer
71 resilient compression resilient member of elevator buffer 71a
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 presents a diagrammatic illustration of an elevator system, which presents the most widespread traction-type, roping ratio 2:1, elevator with machine room at present. The part of the hoistway 11 below the bottom landing is called the pit, and its vertical height is called the pit depth, denoted PD. The bottommost plane of the hoistway 11, i.e., the hoistway bottom surface, is referred to as the pit plane. The lifting assembly in this embodiment is a car 21. Of course, the lifting assembly may also be a lifting platform.
The car 21 and the counterweight 23 are disposed in the hoistway 11, guided by a car side guide rail 54 and a counterweight side guide rail 55 (not shown), respectively, and suspended by a traction rope 41 wound around the drive device 31. The car 21 and the counterweight 23 are driven by a drive device 31 disposed in the machine room 12 to move in opposite directions in the vertical direction within the hoistway 11. The bottom member of the car 21 is a platform 21a, and the thickness of the platform 21a is L 1 And (4) showing. The car 21 is provided with a car-side sheave 22 and a counterweightA counterweight-side sheave 24 is provided at 23. The traction rope 41 is guided around the car-side sheave 22 via the guide sheave 32 and around the counterweight-side sheave 24, and both ends are fixed in the machine room 12 and divided into a car-side rope end 51 and a counterweight-side rope end 52 according to their positions. The control devices 53 of the elevators are also arranged in the machine room 12.
The elevator buffer 61 is provided near the lower end positions of the movement paths of the car 21 and the counterweight 23 on the car side and the counterweight side, respectively. Typically, the elevator buffer 61 is secured to the pit floor using expansion bolts or by means of raised seats (not shown).
The lower chain double-dashed line in fig. 1 shows a schematic view of the car when the bottom landing is on level. When the car 21 is at the bottom landing leveling position, the distance between the car bottom 21a and the car-side elevator buffer 61 in the initial free state is referred to as the car-side overrun and is denoted by RB. The height of the elevator buffer 61 in the initial free state is L 2 . The difference in height between the initial free state and the fully compressed state of the elevator buffer 61, referred to as the stroke, is defined by the height L 21 And (4) showing.
As can be seen from FIG. 1, in the conventional system layout, the depth of the pit is calculated by considering the thickness L of the platform 1 Car side overrun RB and height L of car side elevator buffer in initial free state 2 The sum of the three, namely:
PD 1 ＝L 1 +RB+L 2 ………………………………………………………………(1)
the calculation of the pit depth shown in equation (1) is also representative of the case of most elevators, considering that the pit depth is determined by the car side. The vertical distance between the highest part fixed in the pit and the lowest part of the car after the car is sunk, and the like, which are not considered by national standards. For an actual elevator system, the examination of the items is additionally added during application, and the novelty and the wide practicability of the invention are not influenced.
Fig. 2 and 3 are schematic diagrams illustrating a first embodiment of the present invention. As shown in fig. 2, the car 21 is at the bottom floorLanding flat position. The elevator system is provided with two improved elevator buffer devices 71 on the car side, wherein the improved elevator buffer devices 71 comprise elastic compression recoverable pieces 71a and beating plates 71b, and the beating plates 71b in the embodiment are Z-shaped. The elastic compression restorable piece 71a of the elevator buffer 71 is outside the projection plane of the car 21 when viewed from the vertical direction (note: the top view can be seen in fig. 6 and 7); the collision point of the car 21 against the elevator buffer 71, i.e., the collision point of the striking plate 71b against the car 21, is within the projection plane of the car 21. The distance between the collision points of the platform 21a and the striking plate 71b is represented by RB as the car-side overrun. As shown in fig. 3, in case of emergency, the car 21 sinks to fully compress the elevator buffer 71, and the compression height is the stroke L of the elastically compressible resilient member 71a in the elevator buffer 71 21 . At this time, a proper safety distance L is reserved between the car bottom 21a and the plane of the pit 3 。
It is easy to know that the pit depth PD is calculated without considering the influence of the height of the elevator buffer 71, and the limit condition is only the thickness L of the car bottom 21a 1 Safe distance L 3 And a stroke L of the elastically compressible recoverable element 71a 21 Car side overrun RB, namely:
PD 2 ＝L 1 +RB+L 3 +L 21 …………………………………………………………(2)
comparing the formula (1) and the formula (2), the following relationship holds:
PD 1 -PD 2 ＝L 2 -L 21 -L 3 ………………………………………………………(3)
in the above formula, L 2 -L 21 The initial free state height of the resiliently compressible recoverable piece 71a minus the compression stroke, i.e., the height to which the resiliently compressible recoverable piece 71a has been fully compressed. Safety distance L 3 Usually given by the designer through engineering practices and calculations. For the occasions with the most urgent need for a shallow pit, such as a household elevator, an old building additionally provided with an elevator and the like, a mechanical stopping device and the like which accord with relevant standards are usually arranged, so that the situation that personnel cannot be in the pit when the elevator operates normally is ensured,so design margin L 3 The distance that is considered only to avoid collision of the components mounted on the platform 21a with the pit plane may be a relatively small value. Is obviously provided with L 2 -L 21 ＞L 3 Relation of (b), therefore PD 1 -PD 2 > 0, i.e. PD 1 ＞PD 2 . The technical scheme of the embodiment is adopted, so that the requirement on the depth of the pit can be effectively reduced.
As shown in fig. 2, when the modified buffer 71 is in the initial free state, the vertical distance between the top surface of the elastically compressible restoring member 71a and the bottom surface of the hoistway 11 is not less than the vertical distance between the striking point of the striking plate 71b and the car 21 and the bottom surface of the hoistway. Namely:
L 2 ≥PD-L 1 -RB……………………………………………………………(4)
obviously, if the above equation (4) is not satisfied, it indicates that the pit depth of the project is sufficient, or the height of the elastically compressible resilient member 71a is small, the elastically compressible resilient member 71a can be directly placed within the projection plane of the car without affecting the pit depth PD value. The minimum pit depth PD value does not need to be calculated by equation (2), and the innovative effect of effectively reducing the pit depth requirement generated in the present embodiment cannot be embodied.
As shown in fig. 2, when the elevator buffer 71 is in the initial free state, the vertical distance between the striking point of the striking plate 71b and the car 21 and the bottom surface of the hoistway 11 is greater than the maximum stroke of the elastically compressible restoring member 71a that can be compressed. Namely:
PD-L 1 -RB＞L 21 …………………………………………………………………(5)
this formula can be further converted into:
PD-L 1 -RB-L 21 ＞0………………………………………………………………(6)
the relationship of equation (6) ensures that even if the elastically compressible resilient member 71a is fully compressed, the lowest part of the car 21, i.e., the car bottom 21a, does not collide with the pit plane,leaving a sufficient safety distance therebetween. In the formula (6), the thickness L of the platform 21a 1 The car side overrun RB has been already set at the time of elevator system design, generally a fixed value, and the calculation of the visible minimum pit depth PD is mainly related to the stroke L of the elastically compressible resilient member 71a 21 In this connection, it is also stated that with the solution of the present patent, the calculation of the pit depth is no longer associated with the initial free-state height L of the elastically compressible recoverable element 71a 2 Related only to the stroke L of the resiliently compressible return member 71a 21 And (4) correlating.
Further, the elastically compressible resilient member 71a of the elevator buffer 71 used herein is a buffer for an elevator. The buffer type commonly used in elevators is spring type, polyurethane type, hydraulic type, or the like. The elastically compressible resilient member 71a is preferably a hydraulic damper, depending on the size, shape, deceleration characteristics, and feasible design of the striking plate connection, etc. of the various types of dampers.
Fig. 4 and 5 are schematic diagrams illustrating a second embodiment of the present invention. In this embodiment, the striking plate 71b of the improved elevator buffer 71 is U-shaped, and the two elevator buffers 71 share the same striking plate 71 b. The elastic compression restorable piece 71a of the elevator buffer 71 is outside the projection plane of the car 21 when viewed from the vertical direction; the collision point of the car 21 against the elevator buffer 71, i.e., the collision point of the striking plate 71b against the car 21, is within the projection plane of the car 21. As shown in fig. 5, in an emergency, the car 21 sinks to fully compress the elevator buffer 71, and a proper safety distance L is reserved between the car bottom 21a and the pit floor 3 。
By applying the technical scheme of the embodiment, the calculation of the minimum pit depth PD value according to the formula (2) can be realized, and the requirement on the depth of the civil engineering pit is effectively reduced. Because the two elevator buffer devices 71 share the same striking plate 71b, and the impact point of the car 21 and the striking plate 71b is positioned between the two elastically-compressed recoverable pieces 71a, the impact force is ensured to be effectively and evenly dispersed to the two elastically-compressed recoverable pieces 71 a; on the other hand, the same beating plate 71b is shared, so that the synchronism of the compression action of the two elastic compression recoverable pieces 71a is effectively ensured, and the installation, adjustment and maintenance inspection are more convenient.
Fig. 6 and 7 are schematic diagrams illustrating a third embodiment of the present invention. In this embodiment, the number of the elevator buffer devices 71 is even, and the elevator buffer devices are symmetrically arranged with respect to the car 21 as viewed in the vertical direction.
As shown in fig. 6, the elevator system is provided with 2 elevator buffers 71 on the same side of the car guide rail center line, and the 2 elevator buffers 71 are arranged symmetrically with respect to the center line of the car 21. The 2 elevator buffer devices 71 are arranged on the same side of the center line of the car guide rail, so that the traction rope 41, the speed limiter rope, the terminal switch, the impact bow, the flat sensor and the like can be conveniently arranged on the other side of the center line of the car guide rail, and civil engineering arrangement is more flexible.
As shown in fig. 7, the elevator system is provided with 2 elevator buffers 71 located on opposite sides of the center line of the car guide rail, and the 2 elevator buffers 71 are symmetrically arranged with respect to the center point of the car 21. When the car 21 sinks, the platform 21a strikes the striking plate 71b, and a reaction force against the car 21 is generated. Since the connection line of the 2 elevator buffer devices 71 passes through the car center point, the car 21 is more stable under the reaction force impact.
In the illustration of the present embodiment, the two elevator buffer devices 71 are provided with respective knock plates 71b in a zigzag shape. Obviously, the present embodiment can be simply changed to that two elevator buffer devices 71 share the same striking plate 71b, and the striking plate 71b is in a U shape.
Fig. 8 is a schematic view showing a fourth embodiment of the present invention. In this embodiment, the present invention is a hoisting type elevator system without a machine room. Unlike fig. 1, the driving principle of the elevator system is a winding type forced driving method without the counter weight 23. The machine room 12 is not required for civil engineering, and the driving device 31 is arranged in the pit and drives the cage 21 to move vertically along the guide rail 54 by the traction rope 41 passing through the top fixed pulley 25. It is common practice to arrange the control device 53 at the top landing.
Like the first embodiment, the modified elevator buffering device 71 includes an elastically compressible resilient member 71a and a striking plate 71b, and the striking plate 71b in this embodiment has a zigzag shape. The elastic compression restorable piece 71a of the elevator buffer 71 is outside the projection plane of the car 21 when viewed from the vertical direction; the collision point of the car 21 against the elevator buffer 71, i.e., the collision point of the striking plate 71b against the platform 21a, is within the projection plane of the car 21. Similarly, by applying the scheme of the embodiment, the calculation of the minimum pit depth PD value according to the formula (2) can be realized, and the requirement on the civil engineering pit depth is effectively reduced.
Fig. 9 is a schematic view showing a fifth embodiment of the present invention. In this embodiment, in order to reduce the impact oscillation to the car 21 caused by the collision of the car platform 21a against the striking plate 71b when the car 21 sinks, a spacer 72 made of a buffer material may be provided at the position of the collision point of the striking plate 71b with the car 21. Thereby weakening the influence of the reaction force, stabilizing the elevator and avoiding passengers from being frightened. As will be readily appreciated, it is also possible to resort to:
1. a gasket 72 made of a buffer material is arranged at the connection position of the striking plate 71b and the elastic compression recoverable piece 71 a;
2. a gasket 72 made of a buffer material is arranged at the position of the impact point between the car bottom 21a and the striking plate 71 b;
3. at several or all of the above positions, spacers 72 made of a cushioning material are provided.
Fig. 10 is a schematic view showing a sixth embodiment of the present invention. In the present embodiment, a hoisting type elevator system without a machine room is provided, and unlike the fourth embodiment, the car is replaced with the lifting platform 26 in the present embodiment.
Like the first embodiment, the improved elevator buffer 71 includes an elastically compressible resilient member 71a and a knock-out plate 71b, and the knock-out plate 71b in this embodiment has a zigzag shape. The elastically compressible resilient member 71a of the elevator buffer 71 is outside the plane of projection of the elevating platform 26 as viewed in the vertical direction; the impact point of the elevator platform 26 on the elevator buffer 71, namely the impact point of the striking plate 71b and the elevator platform bottom 26a, is in the projection plane of the elevator platform 26. Similarly, by applying the scheme of the embodiment, the calculation of the minimum pit depth PD value according to equation (2) can be realized, and the requirement for the civil engineering pit depth is effectively reduced.
Fig. 11 is a schematic view showing a seventh embodiment of the present invention. In villa and duplex-room project occasions applied to home elevators, a common situation is that a walking stair is in a spiral rising structure and is circular or quadrilateral in vertical direction; the elevator integrated lifting channel with a steel structure or an aluminum alloy structure is built in the gap in the middle of the spiral stair. Due to the restrictions of the room space, the dimensions of the plane that can be reserved for the elevator hoistway are very limited, and the requirements for the elevator system are: on one hand, the requirement on the depth of the pit can be effectively reduced; on the other hand, the requirements for the size of the civil engineering plane cannot be additionally increased.
In this embodiment, the hoistway walls, shown in phantom lines, are closely adjacent the stairways, and architectural structural and decorative design constraints limit the planar dimensions of the hoistway. It can be seen that the elastically compressible resilient member 71a is disposed outside the projection plane of the car 21, and the planar dimension of the hoistway at the elevator traveling section is not increased, but only a small amount of space is required to be expanded near the pit section for installing the elastically compressible resilient member 71 a. By applying the technical scheme of the embodiment, the calculation of the minimum pit depth PD value according to the formula (2) can be realized, and the requirement on the civil engineering pit depth is effectively reduced; on the other hand, the requirement for the size of the civil engineering plane is not additionally increased.
It is readily appreciated that the small amount of space that is expanded to accommodate the resiliently compressible return 71a can be utilized to take advantage of the space under the ground level stairs. Therefore, a small amount of space is expanded for placing the elastic compression recoverable piece 71a, the civil engineering design is easy to solve, and on the other hand, the idle space under the stairs is effectively utilized, and the indoor decoration is not influenced.
The present invention has been described in detail with reference to the specific embodiments, which are merely the preferred embodiments of the present invention, and the present invention is not limited to the embodiments discussed above. Obvious modifications or alterations based on the teachings of the present invention should also be considered to fall within the technical scope of the present invention. For example, the striking plate 71b may be designed in other shapes that meet the use requirements, and the connecting position of the striking plate 71b and the elastically compressible resilient member 71a may be changed. The foregoing detailed description is provided to disclose the best mode of practicing the invention, and also to enable a person skilled in the art to utilize the invention in various embodiments and with various alternatives for carrying out the invention.
Claims (17)
1. An elevator lifting assembly moves vertically up and down along an elevator shaft, and the elevator comprises an elevator buffer device, an elevator lifting assembly and an elevator lifting assembly, wherein the elevator buffer device is provided with an elastic compression recoverable piece, is located on the bottom surface of a shaft pit and falls outside a vertical projection of a car; the elevator hoist assembly includes:
the hitting plate comprises a supporting end and a contact end, the supporting end is supported on the elastic compression recoverable piece of the elevator buffer device, and the contact end extends into the vertical projection of the elevator car for a certain distance; when the elevator runs and the bottom surface of the car is close to the bottom surface of the pit, the contact end is in contact with and bears the gravity and the inertia impact of the elevator car, the support end on the elastic compression restorable piece is supported on the elevator buffer device, the speed of the elevator car is buffered by relying on the elastic compression restorable piece to give reverse acting force to the elevator car, when the support end is pressed to the preset maximum compression value of the elastic compression restorable piece on the elevator buffer device, the elevator car is stable, the upper surface of the bottom of the elevator car and the ground of the bottom landing of the pit are basically flat, and the lower surface of the bottom of the elevator car is close to the bottom surface of the pit and reaches the preset minimum value.
2. The elevator hoist assembly of claim 1, wherein the beater plate is "Z" shaped or "U" shaped.
3. The elevator hoist assembly of claim 1, wherein: the elastically compressible resilient member of the elevator buffer is a hydraulic buffer.
4. The elevator hoist assembly of claim 3, wherein: the elastic compression restorable piece on the elevator buffer device is a hydraulic buffer which can be continuously compressed for multiple times.
5. The elevator hoist assembly of claim 4, wherein: the hydraulic buffer can be restored to the initial free state from the compressed state in a short time after being unloaded.
6. The elevator hoist assembly of claim 5, wherein: and an electric switch is arranged on the hydraulic buffer to monitor whether the hydraulic buffer is restored to an initial free state or not.
7. The elevator hoist assembly of claim 1, wherein the contact end contacts and supports an elevator car velocity of no greater than 9 meters per minute against gravitational and inertial impacts of the elevator car just prior to the car descending to reach a bottom landing level.
8. An elevator assembly according to claim 1, wherein the predetermined maximum compression value S is the maximum travel S1 over which the resiliently compressible return member is compressible minus a predetermined amount of 5-10 mm.
9. An elevator assembly according to claim 1, wherein the lower surface of the car bottom is adjacent the pit floor to a predetermined minimum value of 5-30 mm at S2.
10. The elevator hoist assembly of claim 1, wherein the contact end of the knock plate contacts the bottom of the elevator car with a spacer of cushioning material.
11. The elevator hoist assembly of claim 1, wherein the number of elevator buffer devices is an even number and is symmetrically arranged with respect to the car as viewed in a vertical direction.
12. An elevator system comprising at least a hoistway, a traction rope, a drive, a guide track, and an elevator hoist assembly according to claims 1-11;
the traction rope, the guide rail and the elevator lifting assembly are arranged in a hoistway, the part of the hoistway below a bottom landing is a pit, and the bottommost plane of the hoistway is the bottom surface of the pit.
13. The elevator system of claim 12, wherein the lifting assembly is a car or a lifting platform.
14. Elevator system according to claim 12, characterized in that the traction rope can also be a traction belt, a traction chain.
15. Elevator system according to claim 12, characterized in that the guide rail can be an elevator guide rail, a profile guide, a machine formed guide.
16. The elevator system of claim 12, wherein the drive of the elevator system is traction or hoisting.
17. The elevator system of claim 12, further comprising a speed governor, a safety gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110200055.7A CN114955795A (en) | 2021-02-23 | 2021-02-23 | Elevator lifting assembly and elevator system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110200055.7A CN114955795A (en) | 2021-02-23 | 2021-02-23 | Elevator lifting assembly and elevator system |
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| CN114955795A true CN114955795A (en) | 2022-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110200055.7A Pending CN114955795A (en) | 2021-02-23 | 2021-02-23 | Elevator lifting assembly and elevator system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230202799A1 (en) * | 2021-12-24 | 2023-06-29 | Otis Elevator Company | Double impact area buffer for improved plank |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001226053A (en) * | 2000-02-16 | 2001-08-21 | Toshiba Elevator Co Ltd | Elevator device |
| JP2009184782A (en) * | 2008-02-06 | 2009-08-20 | Mitsubishi Electric Corp | Elevator device |
| EP2824055A1 (en) * | 2013-07-10 | 2015-01-14 | Kone Corporation | Elevator pit buffer |
| CN205772616U (en) * | 2016-05-06 | 2016-12-07 | 南京市莱茵帝得电梯有限公司 | Elevator buffer device without pit and without pit elevator |
| CN110817646A (en) * | 2019-11-21 | 2020-02-21 | 中船邮轮科技发展有限公司 | Elevator stop device and elevator |
-
2021
- 2021-02-23 CN CN202110200055.7A patent/CN114955795A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001226053A (en) * | 2000-02-16 | 2001-08-21 | Toshiba Elevator Co Ltd | Elevator device |
| JP2009184782A (en) * | 2008-02-06 | 2009-08-20 | Mitsubishi Electric Corp | Elevator device |
| EP2824055A1 (en) * | 2013-07-10 | 2015-01-14 | Kone Corporation | Elevator pit buffer |
| CN205772616U (en) * | 2016-05-06 | 2016-12-07 | 南京市莱茵帝得电梯有限公司 | Elevator buffer device without pit and without pit elevator |
| CN110817646A (en) * | 2019-11-21 | 2020-02-21 | 中船邮轮科技发展有限公司 | Elevator stop device and elevator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20230202799A1 (en) * | 2021-12-24 | 2023-06-29 | Otis Elevator Company | Double impact area buffer for improved plank |
| US11912538B2 (en) * | 2021-12-24 | 2024-02-27 | Otis Elevator Company | Double impact area buffer for improved plank |
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Application publication date: 20220830 |