CN115716618B - A car anti-collision method for a multi-car intelligent elevator - Google Patents
A car anti-collision method for a multi-car intelligent elevatorInfo
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- CN115716618B CN115716618B CN202110993509.0A CN202110993509A CN115716618B CN 115716618 B CN115716618 B CN 115716618B CN 202110993509 A CN202110993509 A CN 202110993509A CN 115716618 B CN115716618 B CN 115716618B
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Abstract
The invention discloses a car anticollision method of a multi-car intelligent elevator, which comprises a plurality of cars, wherein the cars are arranged on a suspension device, a driving device and a guiding limiting device are also arranged on the suspension device, an anticollision unit is arranged on the car or the suspension device or the guiding limiting device, the anticollision unit comprises a detection piece and a trigger piece, when the distance between two adjacent cars running on the same track is close to the contact of the anticollision units on the two cars, the detection piece and the trigger piece on one car respectively contact with the trigger piece and the detection piece on the other car, the detection pieces on the two cars are triggered, and an elevator control system controls the two cars to stop after receiving the triggered information of the two detection pieces or controls the two cars to run in a variable speed mode so as to prevent the two cars from colliding. The triggering piece and the detecting piece of the adjacent lift car are in mechanical contact and triggering, the action is stable and reliable, and the invention is applicable to straight rails and arc rails.
Description
Technical Field
The invention belongs to the technical field of elevators, and particularly relates to a car anti-collision method of a multi-car intelligent elevator.
Background
In modern society and economic activities, elevators have become indispensable people-or load-carrying vertical transport means. Since 1854 elevator invention, an elevator car runs in a traction driving mode by adopting a steel wire rope wheel, and a machine room, a traction motor and a speed reducer are arranged on the top layer of a building to drive a steel wire rope to pull the car and a counterweight to run on a track in a hoistway. This drive allows for generally only one car to be operated within a single hoistway, and a single car mode of operation provides for a low-rise, low traffic floor. With the rapid development of modern cities, the defects of long waiting time and low conveying efficiency of the elevator in a single-car running mode are continuously amplified from the beginning of pulling out high-rise buildings and super-high-rise buildings with large population density, and the traditional single-car elevator running mode is difficult to adapt to the rapid development requirement of the modern city buildings.
In order to improve the utilization rate of building space and the transportation efficiency of the elevator and reduce the manufacturing cost of the building and the elevator, along with the continuous development of engineering technology level, a multi-car parallel elevator is being developed and applied. The multi-car parallel elevator adopts a traction-wire-rope-free direct driving technology, so that a plurality of elevator cars can be operated in the same hoistway at the same time, and the elevators among the various hoistway can be mutually switched to operate in the hoistway, thereby realizing overrun operation. The rails of different shafts are connected through switching rails, and for smooth connection, the connection part between the rails and the switching rails is an arc-shaped rail, or the switching rails are arc-shaped rails.
In order to ensure safe running of the cars and prevent collision of adjacent cars in the running process, a certain safety distance needs to be ensured between the adjacent cars in the running process, namely, the distance between the adjacent cars is larger than a set value. An existing anti-collision method between the cars of the multi-car elevator system mainly detects the positions of adjacent cars through a position detection system, and a control system compares and analyzes whether the real-time distance between the adjacent cars meets the safety distance requirement or not to control the start, stop and action of the cars so as to prevent the cars from collision. The reliability of the method is completely dependent on the reliability of the monitoring and control systems, such as the control system and the position detection system. When a position control system or a position detection system fails, a collision of the cars may be caused. Sometimes, in order to ensure the reliability of the system, the safe and reliable level of the system needs to be improved as much as possible, which leads to complex system and increased cost.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a car anti-collision method of a multi-car intelligent elevator, which is characterized in that a safety anti-collision detection piece and a safety anti-collision triggering piece are arranged on a car or a suspension device or a guide limiting device, when the distance between adjacent cars is equal to a set distance, the triggering piece can be directly contacted and trigger the detection piece, so that the adjacent two cars can simultaneously stop or move in a variable speed manner to prevent collision, the triggering piece and the detection piece of the adjacent cars are mechanically contacted and triggered, the action is stable and reliable, a straight rail and an arc rail are suitable, an anti-collision unit adapts to the track of the track through a guide wheel, the angle between the anti-collision unit and the track is kept unchanged, and the anti-collision units of the adjacent two cars can be accurately aligned to contact and trigger when the cars pass through the arc rail.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
The elevator has no traction structure, the elevator comprises a plurality of elevator cars, the elevator cars are arranged on a suspension device, a driving device and a guiding limiting device for guiding and limiting the suspension device are further arranged on the suspension device, the driving device drives the suspension device and the elevator cars to move along a track, an anti-collision unit is arranged on the elevator cars or the suspension device or the guiding limiting device, the anti-collision unit comprises a detection piece and a trigger piece, when the distance between two adjacent elevator cars moving on the same track is close to the contact of the anti-collision unit on the two elevator cars, the detection piece and the trigger piece on one elevator car are respectively contacted with the trigger piece and the detection piece on the other elevator car, the detection pieces on the two elevator cars are triggered, and the elevator control system controls the two elevator cars to stop after receiving the triggered information of the two detection pieces or controls the two elevator cars to move in a variable speed so as to prevent the two elevator cars from collision.
As a further improvement of the above technical scheme:
For the condition that the elevator control system receives the triggered information of the two detection pieces and then controls the two elevator cars to stop, the detection pieces are normally closed switches connected to an elevator safety loop, and after the detection piece on one elevator car is contacted and triggered by the triggering piece on the other elevator car, the detection piece is disconnected as the triggering piece of the normally closed switch, and when the elevator safety loop is disconnected, the elevator car is stopped.
For the condition that the elevator control system controls the speed change of the two cabs after receiving the triggered information of the two detection pieces, the detection pieces are electrically connected with the elevator control system, and the control system can receive the signals of the detection pieces.
When the adjacent two cabs run in the same direction, the control system controls the rear cabs in the two cabs running in the same direction to decelerate or the front cabs to accelerate, so that the minimum running distance between the adjacent two cabs is larger than or equal to the safety distance.
Two groups of anti-collision units are arranged on each car and are an upper anti-collision unit and a lower anti-collision unit respectively, the upper anti-collision unit on one car is located above the lower anti-collision unit, the upper anti-collision unit on one car is used for being matched with the lower anti-collision unit on the car above the upper anti-collision unit to trigger, and the lower anti-collision unit on one car is used for being matched with the upper anti-collision unit on the car below the lower anti-collision unit to trigger.
The anti-collision unit can be further provided with a plurality of guide wheels with guide limiting functions, the guide wheels are symmetrically attached to two sides of the rail to roll, the anti-collision unit is guided to follow along the rail, namely, the anti-collision unit is guided to move along the length direction of the rail, and two anti-collision units of two adjacent cabs can be aligned and contacted.
The detection member is a self-recovering element or a non-self-recovering element.
The mounting seats of the two mutually triggered anti-collision units are staggered and distributed until the two anti-collision units do not interfere with the running of the respective lift car after interaction.
The invention has the beneficial effects that the safety anti-collision detection part and the safety anti-collision triggering part are arranged on the lift car or the suspension device or the guide limiting device, when the distance between the adjacent lift cars is equal to the set distance, the triggering part can be directly contacted and trigger the detection part, so that the two adjacent lift cars can simultaneously stop or move in a variable speed manner to prevent collision, the triggering part and the detection part of the adjacent lift cars are mechanically contacted and triggered, the action is stable and reliable, the straight rail and the arc rail are applicable, the anti-collision unit adapts to the track of the rail through the guide wheel, the angle between the anti-collision unit and the rail is kept unchanged, and the anti-collision units of the two adjacent lift cars can be accurately aligned to contact and trigger when the lift cars pass through the arc rail.
Drawings
FIG. 1 is a schematic illustration of an application of a first embodiment of the present invention;
FIG. 2 is an enlarged schematic view at A of FIG. 1;
FIG. 3 is a schematic illustration of an application of a second embodiment of the present invention;
FIG. 4 is an enlarged schematic view at B of FIG. 3;
FIG. 5 is an enlarged schematic view at C of FIG. 3;
FIG. 6 is a schematic view of view A-A of FIG. 4;
FIG. 7 is a schematic view of view B-B of FIG. 5;
fig. 8 is a schematic view of view C-C of fig. 3.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
Spatially relative terms, such as "above," "upper" and "upper surface," "above" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the process is carried out, the exemplary term "above" may be included. Upper and lower. Two orientations below. The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The elevator has no traction structure, the elevator comprises a plurality of cabs 3, the cabs 3 are arranged on a suspension device, a guiding limiting device and a driving device are further arranged on the suspension device, the driving device is power for running the cabs 3, the driving device drives the suspension device and the cabs 3 to run along the track 2, and the guiding limiting device is used for guiding and limiting the suspension device, so that the suspension device and the cabs 3 run along the length direction of the track 2.
The guiding limiting device comprises a guiding seat 51 and a plurality of guiding wheels 52, the guiding wheels 52 are rotatably arranged on the guiding seat 51, the guiding wheels 52 are symmetrically attached to two sides of the track 2 to roll, and the suspension device is hinged with the guiding seat 51. During operation, the guide seat 51 rotates when passing through the arc rail so as to adapt to the condition that the guide wheel 52 is attached to the rail 2. In this way, the angle between the guide seat 51 and the track 2 is kept unchanged, if the guide seat 51 is perpendicular to the straight track, the guide seat 51 remains perpendicular to the arc track after it enters the arc track. In this way, the guiding and limiting device can ensure that the suspension device and the lift car 3 always run along the length direction of the forehead rail 2 in the running process, and the lift car 3 can keep a vertical state when passing through the arc rail, so that the comfort of passengers is ensured. The suspension means, the drive means and the guiding and limiting means are described in detail in other patent applications of the present inventor and will not be repeated here.
The anti-collision unit is arranged on the lift car 3, the anti-collision unit comprises detection pieces and trigger pieces, when the distance between two adjacent lift cars 3 running on the same track 2 is close to the contact of the anti-collision unit on the two lift cars 3, the detection pieces and the trigger pieces on one lift car 3 are respectively contacted with the trigger pieces and the detection pieces on the other lift car 3, the detection pieces on the two lift cars 3 are triggered, the triggered information is transmitted to the control system by the detection pieces, and the elevator control system controls the two lift cars 3 to stop after receiving the triggered information of the two detection pieces, or controls the two lift cars 3 to run in a variable speed mode so as to prevent the two lift cars 3 from collision.
Preferably, two groups of anti-collision units are arranged on each car 3, the two groups of anti-collision units are respectively arranged at the upper end and the lower end of the car 3, the upper anti-collision unit on one car 3 is used for being matched with the lower anti-collision unit on the car 3 above the upper anti-collision unit to trigger, and the lower anti-collision unit on one car 3 is used for being matched with the upper anti-collision unit on the car 3 below the lower anti-collision unit to trigger.
It should be noted that if one car 3 is always located at the uppermost position of all the cars 3 during the running process in one elevator system, only the lower collision avoidance unit needs to be installed on the car 3, and if one car 3 is always located at the lowermost position of all the cars 3 during the running process in one elevator system, only the upper collision avoidance unit needs to be installed on the car 3.
The triggering of the detecting member by the triggering member means that the detecting member is triggered by a physical force. The trigger piece is a mechanical object body, and the detection piece is a self-recovery type detection element or a non-self-recovery type detection element. And in the non-triggering state, the detection part is in a normally closed state.
When the detecting piece is a non-self-recovery type element, the detecting piece is in a normally closed state in a non-triggering state, and when the triggering piece triggers the detecting piece, the detecting piece is switched from the normally closed state to an open state. When the trigger member is moved away from the detecting member, the detecting member is still in an open state, and an external mechanism (such as a person manual or an external signal) is required to drive the detecting member to be closed. The non-self-recovering element is an electric device such as a non-self-recovering switch.
When the detecting piece is a self-recovery type element, the detecting piece is in a normally closed state in a non-triggering state, when the triggering piece triggers the detecting piece, the detecting piece is changed from the normally closed state to an open state, and when the triggering piece leaves the detecting piece, the detecting piece is restored to the closed state, and an external mechanism (such as manual personnel or an external signal) is not needed to drive the detecting piece to be closed. The self-restoring element is a self-restoring switch, etc.
For the condition that the elevator control system receives the triggered information of the two detection pieces on the two adjacent cabs 3 and then controls the two cabs 3 to stop, the detection pieces are normally closed switches and are connected to an elevator safety loop. When the car 3 normally operates and the detecting member as a normally closed switch is not triggered by an external force or is in a non-triggered state, the detecting member is in a closed state. When the detecting member on one car 3 is contacted by the triggering member on the other car 3 and is mechanically triggered, the triggering member as a normally closed switch is disconnected, so that the elevator safety circuit of the car 3 where the detecting member is located is disconnected, and the car 3 is stopped. At this time, the triggering piece triggers the detection piece to be equivalent to triggering the limiting switch by the trigger plate. The detection part used as the normally closed switch is a non-self-recovery switch or a self-resetting switch, and after stopping, the two cabs 3 are restarted to run simultaneously or sequentially, so that the running distance of the two cabs 3 is larger than the set safety distance. The technical solution of stopping the car 3 due to the disconnection of the safety circuit of the elevator can be the solution in the prior art, and will not be described here again.
It should be noted that, after receiving the information that the two detecting pieces are triggered, the elevator control system controls the two cabs 3 to stop, and when the detecting pieces adopt self-recovery elements, the collision avoidance units of the two cabs 3 are required to keep contact all the time until the cabs 3 stop.
For the case of controlling the speed change of the two cabs 3 after the elevator control system receives the triggered information of the two detecting pieces, the detecting pieces are electrically connected with the elevator control system, and the detecting pieces are self-recovery type elements or non-self-recovery type elements. The detection part can send the received information to the control system, and the control system can receive the signals of the detection part and control the actions of other parts of the elevator according to the internal setting program. The control system receives the signal that the detection piece is triggered and controls the two cabs 3 to change speed, so that the minimum running distance between the two adjacent cabs 3 is larger than or equal to the set safety distance. At this time, the control system can control the speeds of the cars 3 in various ways, namely, when two adjacent cars 3 run in opposite directions, the control system controls the two adjacent cars 3 to run at the same time in a decelerating manner until the two cars 3 stop, the control system controls the two cars 3 to run again until the distance between the two cars 3 is not smaller than a set safety distance, then the control system controls the cars 3 to resume normal operation, when the two adjacent cars 3 run in the same direction, the control system controls the rear car 3 in the two cars 3 running in the same direction to decelerate, or the front car 3 to run in an accelerating manner, and when the distance between the two cars 3 reaches the safety distance, the control system controls the cars 3 to resume normal operation again.
It should be noted that, the elevator system is provided with position and speed sensors, and the elevator control system can determine whether the safety distance between the two cars 3 is reached through the current speed and distance, and the specific technical scheme can refer to other patent application texts of the inventor or other prior technical schemes.
From the above, the detecting elements and the triggering elements of the safety collision preventing units of two adjacent cabs 3 on the same running rail 2 act correspondingly with each other, namely, the triggering element of the first cab triggers the detecting element of the second cab adjacent to the first cab, and the triggering element of the second cab triggers the detecting element of the first cab. The interaction of the sensing member and the triggering member between adjacent cars occurs simultaneously or nearly simultaneously (occurs within a set time) so that both cars 3 can respond to the sensed signal at the same time.
The anti-collision device based on the anti-collision method can be realized in various modes, and the anti-collision device is described by two embodiments.
Example 1
The plurality of cars 3 travel only on a straight track. As shown in fig. 1 and 2, a rail 2 is installed in a hoistway 1, a plurality of cars 3 are moved on the rail 2, and the rail 2 is a straight rail. Wherein, two adjacent cars are respectively an upper car 31 and a lower car 32, and the upper car 31 is positioned above the lower car 32. Two collision avoidance units, namely an upper collision avoidance unit 41 and a lower collision avoidance unit 42, are arranged on the upper car 31 and the lower car 32, and the upper collision avoidance unit 41 on each car 3 is positioned above the lower collision avoidance unit 42.
The upper anti-collision unit 41 and the lower anti-collision unit 42 are rigidly and fixedly arranged on the car 3, so that on one hand, the installation of the upper anti-collision unit 41 and the lower anti-collision unit 42 is simplified, and on the other hand, the upper anti-collision unit 41 and the lower anti-collision unit 42 of the adjacent car 3 can be accurately aligned and contacted by the rigid and fixed installation, and the triggering reliability is ensured.
The upper and lower crash units 41 and 42 have the same structure. The crash unit comprises a trigger 4-1 and a detection 4-2. When the distance between the upper car 31 and the lower car 32 is equal to the set value D, the lower collision avoidance unit 42 of the upper car 31 contacts the upper collision avoidance unit 41 of the lower car 32. Specifically, the trigger 4-1 of the lower collision avoidance unit 42 of the upper car 31 contacts the detection 4-2 of the upper collision avoidance unit 41 of the lower car 32, and the detection 4-2 of the lower collision avoidance unit 42 of the upper car 31 contacts the trigger 4-1 of the upper collision avoidance unit 41 of the lower car 32.
The triggering element 4-1 is a mechanical component. The detecting element 4-2 can select different components according to different serial loops.
When the detecting element 4-2 is connected to the safety circuit of the elevator, the detecting element 4-2 can be a limit switch, and the triggering element 4-1 is a triggering plate. The limit switch is a normally closed switch, and when the car 3 runs normally, the limit switch is in a normally closed state, and the safety loop is communicated. When the trigger piece 4-1 and the detection piece 4-2 are in contact, the trigger piece 4-1 serving as a trigger plate triggers the detection piece 4-2 serving as a normally closed switch, the detection piece 4-2 is disconnected, a safety circuit is disconnected, and the car 3 stops.
When the detecting element 4-2 is connected to the elevator control circuit, the detecting element 4-2 may be a signal switch, such as a self-restoring signal switch, and the triggering element 4-1 is a triggering plate. When the triggering element 4-1 and the detecting element 4-2 are in contact, the detecting element 4-2 transmits the received information to the control system, which controls the gear shifting of the upper car 31 and the lower car 32, in the manner described above.
In this embodiment, the detecting members 4-2 on all the cars are limit switches, inductive switches, travel switches, etc. at the same time.
Example two
As shown in fig. 3 to 8, in this embodiment, the elevator includes a plurality of cars 3, at least two main rails, and a plurality of switching rails, where the switching rails are used to connect two different main rails, define the main rails or the switching rails as rails 2, and the switching rails include at least one arc-shaped rail. In other words, in this embodiment, the track 2 includes a straight track and an arc track, that is, the car 3 turns, so that in order to ensure that the collision avoidance device can accurately avoid collision when the car 3 passes through the arc track, the collision avoidance device on the car 3 needs to keep running along the track 2, so that two collision avoidance devices that interact with each other of adjacent cars 3 can accurately align and touch and trigger.
In this embodiment, two adjacent cars 3 are selected, namely an upper second car 31 'and a lower second car 32', and the upper second car 31 'is located above the lower second car 32'. Two anti-collision units, namely an upper anti-collision unit two 41 'and a lower anti-collision unit two 42', are respectively arranged on the upper car two 31 'and the lower car two 32', and the upper anti-collision unit two 41 'on each car 3 is positioned above the lower anti-collision unit two 42'.
In this embodiment, the upper crash unit two 41 'and the lower crash unit two 42' each include the trigger member 4-1 and the detecting member 4-2, which are the same as the trigger member 4-1 and the detecting member 4-2 of the first embodiment.
Unlike the first embodiment, the second upper anti-collision unit 41' is fixedly mounted on the guide seat 51, that is, the second upper anti-collision unit 41' follows the guide seat 51 to adapt to the track change of the track 2, so that the trigger piece 4-1 and the detection piece 4-2 of the second upper anti-collision unit 41' can move along the length direction of the track 2. At this time, the guiding wheel 52 is used as a guiding and limiting wheel of the second anti-collision unit 41 'to guide and limit the second anti-collision unit 41'.
The second lower anti-collision unit 42 'further includes a lower anti-collision seat 421' and a plurality of lower anti-collision guide wheels 422', wherein the lower anti-collision guide wheels 422' are rotatably mounted on the lower anti-collision seat 421', and the plurality of lower anti-collision guide wheels 422' are symmetrically arranged on two sides of the track 2 and roll along the track 2. The trigger 4-1 and the detecting member 4-2 of the second crash barrier unit 42 'are fixedly mounted on the lower crash seat 421'.
It should be noted that, the second upper anti-collision unit 41 'may not be mounted on the guide seat 51, but, like the second lower anti-collision unit 42', an independent upper anti-collision seat and a plurality of upper anti-collision guide wheels are provided, the upper anti-collision guide wheels are rotatably mounted on the upper anti-collision seat, the plurality of upper anti-collision guide wheels are symmetrically disposed on two sides of the track 2 and roll along the track 2, and the upper anti-collision seat is hinged with the suspension device. The trigger piece 4-1 and the detecting piece 4-2 of the upper anti-collision unit II 41' are fixedly arranged on the upper anti-collision seat. In this way, the second anti-collision unit 41 'can be ensured to adapt to the change of the track 2, and the trigger piece 4-1 and the detection piece 4-2 of the second anti-collision unit 41' can be ensured to run along the length direction of the track 2.
The lower anti-collision unit II 42' is connected with the guiding limiting device of the car 3 through a flexible rope.
Based on the above structure, when the car 3 descends, the lower anti-collision unit two 42 'can descend along the holding rail 2 under the action of its own weight, and due to the restriction of the flexible rope, the lower anti-collision unit two 42' can keep running in synchronization with the car 3, and the flexible rope can keep an expanded state. When the car 3 ascends, the car 3 pulls the lower anti-collision unit II 42' to ascend through the flexible rope.
In the running process of the second lower anti-collision unit 42', due to the guiding and limiting effects of the lower anti-collision guide wheel 422', the trigger piece 4-1 and the detection piece 4-2 can be guaranteed to run along the length direction of the track 2 all the time when passing through the straight track and the arc track, the alignment and contact of the second lower anti-collision unit 42 'of the second upper car 31' and the second upper anti-collision unit 41 'of the second lower car 32' are guaranteed, and the trigger piece 4-1 and the detection piece 4-2 of the second lower anti-collision unit 42 'are guaranteed to be aligned with and contact with the detection piece 4-2 and the trigger piece 4-1 of the second upper anti-collision unit 41', respectively.
The length of the flexible rope should be such that the minimum distance between two adjacent cars 3 is greater than a set value after the collision avoidance devices on the two adjacent cars 3 trigger each other and the control system performs the collision avoidance process. If the detecting members 4-2 of the two cars 3 are connected in series to the safety circuit, after the second collision preventing unit 42 'of the second upper car 31' contacts with the second collision preventing unit 41 'of the second lower car 32' and is triggered, the second upper car 31 'and the second lower car 32' are stopped, and a period of time exists from the triggering of the detecting members 4-2 to the complete stopping of the cars 3, so that a stopping distance exists, and finally, the distance between the second upper car 31 'and the second lower car 32' needs to be not less than a set value. The stopping distance can be calculated and set according to specific application and design.
To sum up, when the upper second car 31 'and the lower second car 32' run on the track 2, the guide wheels of the anti-collision unit symmetrically attach to both sides of the track 2, guide the anti-collision unit to follow along the track 2, that is, guide the anti-collision unit to run along the length direction of the track 2, ensure that the lower anti-collision unit two 42 'of the upper second car 31' and the upper anti-collision unit two 41 'of the lower second car 32' can be aligned and contacted, and ensure that the trigger piece 4-1 and the detection piece 4-2 of the lower anti-collision unit two 42 'are aligned and contacted with the detection piece 4-2 and the trigger piece 4-1 of the upper anti-collision unit two 41', respectively. When the linear distance between the upper second car 31 'and the lower second car 32' is equal to the set value, the lower collision avoidance unit two 42 'of the upper second car 31' will contact and trigger with the upper collision avoidance unit two 41 'of the lower second car 32'. Therefore, the above arrangement of the upper collision avoidance unit two 41 'and the lower collision avoidance unit two 42' on the car 3 ensures reliable contact and triggering of the triggering element 4-1 and the detecting element 4-2 on the adjacent two cars 3, while the arrangement of the flexible rope ensures that the collision avoidance device does not interfere with the variable speed operation of the subsequent car 3.
It should be noted that, the installation accessories of the two mutually triggered anti-collision units are staggered, so that the two anti-collision units are ensured not to interfere with each other after interaction, and the two anti-collision units continue to move along with the respective car 3 for a certain stopping distance and then stop or change the moving direction, as shown in fig. 3 and 6-8. Fig. 3D shows a schematic contact diagram of the second collision avoidance unit 42 'and the second collision avoidance unit 41' of two adjacent cars 3.
Fig. 6 is a schematic view of the second collision avoidance unit 42' viewed along the length direction of the track 2, fig. 7 is a schematic view of the second collision avoidance unit 41' viewed along the length direction of the track 2, and fig. 8 is a schematic view of the second collision avoidance unit 42' of the second upper car 31' viewed along the length direction of the track 2 when the second collision avoidance unit 41' of the second lower car 32' contacts the second collision avoidance unit 42 '.
As can be seen from the drawings, the second anti-collision unit 42 'includes a trigger member 4-1 and two detecting members 4-2, wherein the trigger member 4-1 and the two detecting members 4-2 are arranged in a staggered manner, and the two detecting members 4-2 are located between the lower anti-collision guiding wheel 422' and the trigger member 4-1, i.e. the distance between the detecting member 4-2 and the lower anti-collision guiding wheel 422 'is smaller than the distance between the trigger member 4-1 and the lower anti-collision guiding wheel 422'.
The upper anti-collision unit II 41' comprises a trigger piece 4-1 and two detection pieces 4-2, wherein the trigger piece 4-1 and the two detection pieces 4-2 are staggered in a delta shape, and the trigger piece 4-1 is positioned between the guide wheel 52 and the two detection pieces 4-2, namely, the distance between the trigger piece 4-1 and the guide wheel 52 is smaller than the distance between the detection pieces 4-2 and the guide wheel 52.
The diameter and thickness of the guide wheel 52 of the guide limiting device are respectively larger than those of the lower anti-collision guide wheel 422', when the guide limiting device is installed, the distance between the trigger piece 4-1 of the upper anti-collision unit II 41' and the guide wheel 52 is larger than that of the lower anti-collision guide wheel 422', and the distance between the components is set so that the lower anti-collision guide wheel 422' can pass through the space between the trigger piece 4-1 of the upper anti-collision unit II 41' and the guide wheel 52 when the upper anti-collision unit II 41' and the lower anti-collision unit II 42' are contacted, the trigger piece 4-1 of the lower anti-collision unit II 42' can contact the two detection pieces 4-2 of the upper anti-collision unit II 41', and the trigger piece 4-1 of the upper anti-collision unit II 41' can contact the two detection pieces 4-2 of the lower anti-collision unit II 42 '. After the triggering member 4-1 of the lower anti-collision unit two 42 'contacts and triggers the two detecting members 4-2 of the upper anti-collision unit two 41', and the triggering member 4-1 of the upper anti-collision unit two 41 'contacts and triggers the detecting members 4-2 of the lower anti-collision unit two 42', the lower anti-collision unit two 42 'and the upper anti-collision unit two 41' can continue to run along the track 2 for a certain distance.
Each anti-collision unit adopts two detection pieces 4-2, so that the triggering accuracy and reliability are improved.
It is finally necessary that the above embodiments are only for further detailed description of the technical solutions of the present invention and should not be construed as limiting the scope of the present invention, since some insubstantial modifications and adaptations of the present invention are within the scope of the present invention as defined by the foregoing disclosure.
Claims (7)
1. The car anticollision method of the intelligent elevator with multiple cars, the elevator has no traction structure, the elevator comprises a plurality of cars (3), the cars (3) are arranged on a suspension device, a driving device and a guiding limiting device for guiding and limiting the suspension device are also arranged on the suspension device, the driving device drives the suspension device and the cars (3) to run along a track (2), the elevator is characterized in that an anticollision unit is arranged on the cars (3) or on the suspension device or on the guiding limiting device, the anticollision unit comprises a detection part and a triggering part, when the distance between two adjacent cabins (3) running on the same track (2) is close to the contact of the anti-collision units on the two cabins (3), the detection piece and the triggering piece on one cabins (3) are respectively contacted with the triggering piece and the detection piece on the other cabins (3), the detection pieces on the two cabins (3) are triggered, and the elevator control system controls the two cabins (3) to stop after receiving the triggered information of the two detection pieces, or controls the two cabins (3) to run at variable speed to prevent the two cabins (3) from collision;
the anti-collision unit is also provided with a plurality of guide wheels with guiding limiting functions, the guide wheels are symmetrically attached to the two sides of the track (2) to roll, and the anti-collision unit is guided to follow along the track (2).
2. The anticollision method according to claim 1, characterized in that in case the elevator control system receives the information that two detecting elements are triggered to control the stopping of two cabs (3), the detecting elements are normally closed switches connected to the elevator safety circuit, the detecting elements on one cabin (3) are contacted and triggered by triggering elements on the other cabin (3), the triggering elements serving as normally closed switches are disconnected, and when the elevator safety circuit is disconnected, the cabs (3) are stopped.
3. The method according to claim 1, characterized in that the detection elements are electrically connected to the elevator control system and the control system is able to receive the signals of the detection elements for the case of controlling the gear change of the two cars (3) after the elevator control system has received the information that the two detection elements are triggered.
4. The method for preventing collision according to claim 3, wherein the control system controls the adjacent two cars (3) to simultaneously decelerate when the adjacent two cars (3) are operated in opposite directions after receiving the signal triggered by the detection member, and controls the rear car (3) of the two cars (3) operated in the same direction to decelerate or the front car (3) to accelerate when the adjacent two cars (3) are operated in the same direction, so that the minimum operation distance between the adjacent two cars (3) is greater than or equal to the set safety distance.
5. The method of claim 1, wherein each car (3) is provided with two groups of collision avoidance units, namely an upper collision avoidance unit and a lower collision avoidance unit, the upper collision avoidance unit on one car (3) is positioned above the lower collision avoidance unit, the upper collision avoidance unit on one car (3) is used for being matched and triggered with the lower collision avoidance unit on the car (3) above the upper collision avoidance unit, and the lower collision avoidance unit on one car (3) is used for being matched and triggered with the upper collision avoidance unit on the car (3) below the lower collision avoidance unit.
6. The method of claim 1 to 5, wherein the detecting member is a self-recovering member or a non-self-recovering member.
7. The method of claim 1 to 5, wherein the mounting seats of the two mutually triggered anti-collision units are staggered until the two anti-collision units do not interfere with each other after interaction.
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| JP2007076909A (en) * | 2005-09-16 | 2007-03-29 | Toshiba Elevator Co Ltd | Safety device for multi-car elevator |
| WO2016116146A1 (en) * | 2015-01-21 | 2016-07-28 | Kone Corporation | Multi-car elevator system |
| CN112299187A (en) * | 2019-07-31 | 2021-02-02 | 湖南大举信息科技有限公司 | Safety device for elevator without traction steel wire rope and multi-car elevator system |
| JP7324434B1 (en) * | 2022-02-21 | 2023-08-10 | フジテック株式会社 | elevator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0818771B2 (en) * | 1990-11-20 | 1996-02-28 | フジテック株式会社 | Elevator safety equipment |
| JP4104911B2 (en) * | 2002-06-07 | 2008-06-18 | 三菱電機株式会社 | Elevator safety device |
| ZA200710597B (en) * | 2006-12-21 | 2008-11-26 | Inventio Ag | Method of preventing collision of two lift cages movable in the same shaft of a lift installation and corresponding lift installation |
| WO2015151257A1 (en) * | 2014-04-03 | 2015-10-08 | 三菱電機株式会社 | Elevator device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007076909A (en) * | 2005-09-16 | 2007-03-29 | Toshiba Elevator Co Ltd | Safety device for multi-car elevator |
| WO2016116146A1 (en) * | 2015-01-21 | 2016-07-28 | Kone Corporation | Multi-car elevator system |
| CN112299187A (en) * | 2019-07-31 | 2021-02-02 | 湖南大举信息科技有限公司 | Safety device for elevator without traction steel wire rope and multi-car elevator system |
| JP7324434B1 (en) * | 2022-02-21 | 2023-08-10 | フジテック株式会社 | elevator |
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