阅读说明：本技术 电梯缓冲装置及电梯系统 (Elevator buffer device and elevator system ) 是由 陈达宇 姜绍红 于 2020-04-28 设计创作，主要内容包括：本申请提供一种电梯缓冲装置及电梯系统。该电梯缓冲装置包括：多级缓冲器,其包括：主体支架；及安装在所述主体支架上的多个缓冲元件；其中,在各个所述缓冲元件被驱动至竖直方向的工作位置时,其位于不同高度；驱动机构,其包括：动力源,其用于为所述驱动机构提供动力；及可伸缩推杆,其枢接至所述主体支架；以及控制元件,其用于控制所述驱动机构的可伸缩推杆的伸缩长度,使得所述主体支架上的所述多个缓冲元件的一个被驱动至所述工作位置。根据本申请的电梯缓冲装置及电梯系统,通过为多级缓冲器配置合适的驱动机构,使其既能够按需对缓冲装置高度进行自动化调整,从而满足电梯系统在各种常规与非常规运行状态下对缓冲装置布置高度的要求。(The application provides an elevator buffer and an elevator system. This elevator buffer includes: a multi-stage buffer, comprising: a main body support; and a plurality of buffer members mounted on the body frame; wherein each of said cushioning elements is located at a different height when driven to a vertical working position; a drive mechanism, comprising: a power source for powering the drive mechanism; and a telescopic push rod pivoted to the main body bracket; and a control member for controlling a telescopic length of a telescopic push rod of the driving mechanism so that one of the plurality of buffer members on the main body frame is driven to the working position. According to the elevator buffer device and the elevator system, the appropriate driving mechanism is configured for the multi-stage buffer, so that the height of the buffer device can be automatically adjusted according to the requirement, and the requirement of the elevator system on the arrangement height of the buffer device in various conventional and unconventional running states is met.)

1. An elevator buffer, comprising:

a multi-stage buffer, comprising: a main body support; and a plurality of buffer members mounted on the body frame; wherein each of said cushioning elements is located at a different height when driven to a vertical working position;

a drive mechanism, comprising: a power source for powering the drive mechanism; and a telescopic push rod pivoted to the main body bracket; and

a control element for controlling the telescopic length of the telescopic push rod of the drive mechanism so that one of the plurality of damping elements on the main body bracket is driven to the working position.

2. The elevator buffer of claim 1, wherein the plurality of buffer members comprises a first buffer member mounted at a first end of the body bracket and a second buffer member mounted at a second end of the body bracket, the first buffer member or the second buffer member being vertically above the body bracket when driven to the operating position.

3. The elevator buffer of claim 2, wherein the multi-stage buffer further comprises a mounting base to which the first end of the body bracket is pivotally attached.

4. The elevator buffer of claim 3, wherein the multi-stage buffer further comprises a stop element disposed on the mounting base; when the second buffer member is driven to the working position, the swing of the first end portion of the main body bracket in the direction perpendicular to the pivot trajectory plane is restricted by the stopper member.

5. The elevator buffer of claim 3, wherein the power source is disposed proximate the second end of the body bracket, the first end of the retractable push rod is pivotally connected to the power source, and the second end of the retractable push rod is pivotally connected to the first end of the body bracket; wherein, within a telescopic stroke of the telescopic push rod, a second end of the telescopic push rod is kept higher than a first end of the telescopic push rod in a vertical direction.

6. An elevator buffer as defined in claim 5 wherein the angle of said retractable push rod relative to the horizontal at the minimum length is related to: the minimum length, the maximum length, the stroke length and the rated power of the power source of the telescopic push rod.

7. The elevator buffer of claim 5, wherein the multi-stage buffer further comprises a vertical connector disposed at the first end of the body bracket, the vertical connector having a height greater than the body bracket, the second end of the retractable push rod being indirectly pivoted to the first end of the body bracket by being pivoted to an upper portion of the vertical connector.

8. The elevator buffer of any of claims 1 to 7 wherein a support tab is further disposed between the first end and the second end of the body bracket; the side of the body bracket and the support tab together provide a support force when the first cushioning element is driven to the operating position.

9. Elevator buffer according to any of claims 1-7, characterized in that one of the buffer elements is driven to a working position in the vertical direction of at least not less than 600 mm and the other of the buffer elements is driven to a working position in the vertical direction of at least not more than 200 mm.

10. Elevator buffer according to any of claims 1-7, characterized in that the body bracket is constructed as a hollow extruded or sheet metal element with built-in reinforcing ribs.

11. Elevator buffer according to any of claims 1-7, characterized in that the telescopic push rod has a self-locking element; wherein the self-locking element locks the telescopic push rod when any one of the plurality of cushioning elements is driven to the working position.

12. An elevator buffer, comprising:

a multi-stage buffer, comprising: a main body support; and a plurality of buffer members mounted on the body frame; wherein each of said cushioning elements is located at a different height when driven to a vertical working position;

a driving mechanism that controllably drives the multistage damper; and

a control element configured to communicate with an elevator controller and control the drive mechanism to drive the multi-stage buffer upon receipt of an elevator operation abnormality signal from the elevator controller such that one of the plurality of buffer elements on the body bracket driven to the working position has a first height; and controlling the driving mechanism to drive the multi-stage buffer such that another one of the plurality of buffer members on the main body frame driven to the working position has a second height when receiving an elevator operation normal signal from an elevator controller; wherein the first height is greater than the second height.

13. An elevator system, comprising: an elevator controller, a car and an elevator buffer as claimed in any one of claims 1 to 11; wherein the elevator controller is configured to communicate with a control element of the elevator buffer;

wherein the control member controls the driving mechanism to drive the multi-stage buffer when receiving a car operation abnormality signal from an elevator controller so that one of the plurality of buffer members on the body frame driven to the working position has a first height; and is

Controlling the driving mechanism to drive the multi-stage buffer such that another one of the plurality of buffer members on the main body frame driven to the working position has a second height when an elevator operation normal signal from an elevator controller is received;

wherein the first height is greater than the second height.

14. The elevator system according to claim 13, characterized in that each of the buffer elements in the elevator buffer is positioned within an interval of 100 mm of the car bottom center in the vertical direction when driven to the working position in the vertical direction.

Technical Field

The present application relates to the field of elevators, and more particularly, to an elevator buffer for an elevator system.

Background

Passenger conveyors are common in everyday life as a means of improving passenger walking between floors or reducing passenger walking distance. By way of example, it is particularly common to use escalators, elevators and travelators, which are commonly used between floors of commercial buildings and in large airports.

For elevator systems, it is often necessary to provide a dedicated hoistway to mount the components, including: a car that runs in the hoistway, a counterweight that achieves force balance with the car, and the like. In addition, elevator buffer devices are also typically provided in the hoistway pit. When the elevator runs abnormally to cause the car to fall down, the buffer can be used for firstly providing buffer for the car so as not to send serious safety problems. The requirements for hoistway pit depth are reduced in relevant national standards, such as GB 28621. In normal operation, the buffer may be at a lower height. But this height is not sufficient to provide adequate clearance space when personnel are required to enter the hoistway pit for maintenance purposes or other reasons. To address such problems, it is considered in the prior art to provide an elevator buffer having two levels of adjustable height. Wherein, when the elevator normally runs, the buffer device is adjusted to a gear with lower height; when maintenance personnel need to enter and exit from a shaft pit due to various conditions (such as elevator abnormity), the buffer device is adjusted to a gear with higher height. Such a buffer solves the aforementioned problems to some extent. Then, in practical application, the gear of the buffer device can be adjusted only after maintenance personnel firstly enter a shaft pit; and before leaving the shaft pit, the gear of the buffer device still needs to be restored. During these two periods, undesirable security issues may still arise.

Disclosure of Invention

The application aims at providing an elevator buffer device and an elevator system so as to meet the requirement of the elevator system on automatic adjustment of the arrangement height of the buffer device under various conventional and unconventional running states.

To achieve at least one object of the present application, according to one aspect of the present application, there is provided an elevator buffer including: a multi-stage buffer, comprising: a main body support; and a plurality of buffer members mounted on the body frame; wherein each of said cushioning elements is located at a different height when driven to a vertical working position; a drive mechanism, comprising: a power source for powering the drive mechanism; and a telescopic push rod pivoted to the main body bracket; and a control member for controlling a telescopic length of a telescopic push rod of the driving mechanism so that one of the plurality of buffer members on the main body frame is driven to the working position.

Optionally, the plurality of cushioning elements includes a first cushioning element mounted at a first end of the body mount and a second cushioning element mounted at a second end of the body mount, the first cushioning element or the second cushioning element being vertically above the body mount when driven to the operating position.

Optionally, the multistage damper further comprises a mounting base, and the first end of the main body bracket is pivoted to the mounting base.

Optionally, the multistage damper further comprises a limiting element disposed on the mounting base; when the second buffer member is driven to the working position, the swing of the first end portion of the main body bracket in the direction perpendicular to the pivot trajectory plane is restricted by the stopper member.

Optionally, the power source is disposed proximate to the second end of the body mount, the first end of the retractable push rod is pivotally connected to the power source, and the second end of the retractable push rod is pivotally connected to the first end of the body mount; wherein, within a telescopic stroke of the telescopic push rod, a second end of the telescopic push rod is kept higher than a first end of the telescopic push rod in a vertical direction.

Optionally, the angle of the retractable push rod relative to the horizontal at the minimum length is related to: the minimum length, the maximum length, the stroke length and the rated power of the power source of the telescopic push rod.

Optionally, the multistage damper further comprises a vertical connector disposed at the first end of the body bracket, the vertical connector having a height higher than the body bracket, and the second end of the retractable push rod is indirectly pivoted to the first end of the body bracket by being pivoted to an upper portion of the vertical connector.

Optionally, a support tab is further disposed between the first end and the second end of the main body bracket; the side of the body bracket and the support tab together provide a support force when the first cushioning element is driven to the operating position.

Optionally, one of the respective cushioning elements is driven to an operative vertical position of at least not less than 600 mm and the other of the respective cushioning elements is driven to an operative vertical position of at least not more than 200 mm.

Optionally, the body support is configured as a hollow extruded element or sheet metal element with built-in reinforcing ribs.

Optionally, the telescopic push rod has a self-locking element; wherein the self-locking element locks the telescopic push rod when any one of the plurality of cushioning elements is driven to the working position.

To achieve at least one object of the present application, according to another aspect of the present application, there is provided an elevator buffer including: a multi-stage buffer, comprising: a main body support; and a plurality of buffer members mounted on the body frame; wherein each of said cushioning elements is located at a different height when driven to a vertical working position; a driving mechanism that controllably drives the multistage damper; and a control element configured to communicate with an elevator controller and control the drive mechanism to drive the multi-stage buffer upon receipt of an elevator operation abnormality signal from the elevator controller such that one of the plurality of buffer elements on the body bracket driven to the working position has a first height; and controlling the driving mechanism to drive the multi-stage buffer such that another one of the plurality of buffer members on the main body frame driven to the working position has a second height when receiving an elevator operation normal signal from an elevator controller; wherein the first height is greater than the second height.

To achieve at least one object of the present application, according to still another aspect of the present application, there is provided an elevator system including: the elevator comprises an elevator controller, a car and the elevator buffer device; wherein the elevator controller is configured to communicate with a control element of the elevator buffer; wherein the control member controls the driving mechanism to drive the multi-stage buffer when receiving a car operation abnormality signal from an elevator controller so that one of the plurality of buffer members on the body frame driven to the working position has a first height; and controlling the driving mechanism to drive the multi-stage buffer such that another one of the plurality of buffer members on the main body frame driven to the working position has a second height when receiving an elevator operation normal signal from an elevator controller; wherein the first height is greater than the second height.

Optionally, each of the buffer elements in the elevator buffer is positioned within an interval of 100 mm of the car bottom center in the vertical direction when driven to the working position in the vertical direction.

According to the elevator buffer device and the elevator system, the appropriate driving mechanism is configured for the multi-stage buffer, so that the height of the buffer device can be automatically adjusted according to the requirement, and the requirement of the elevator system on the arrangement height of the buffer device in various conventional and unconventional running states is met; and the driving mechanism reasonably utilizes the telescopic push rod to reduce the required power for driving and adjusting the multi-stage buffer, so that the power source of the driving mechanism can be miniaturized, and the driving mechanism is more suitable for the compact structural space in the elevator shaft.

Drawings

Fig. 1 is a schematic perspective view of one embodiment of an elevator buffer.

Fig. 2 is a schematic diagram of the arrangement of the angle between the telescopic push rod of the elevator buffer and the horizontal plane.

Detailed Description

The present application will be described in detail below with reference to exemplary embodiments in the drawings. It should be understood, however, that the present application may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the application to those skilled in the art.

Furthermore, to any single feature described or implicit in an embodiment or shown or implicit in the drawings, the present application still allows any combination or permutation to continue between the features (or their equivalents) without any technical impediment, thereby achieving more other embodiments of the present application that may not be directly mentioned herein.

The present application first describes an embodiment of an elevator buffer in conjunction with fig. 1-2. The elevator buffer device 100 comprises a multi-stage buffer 110, a driving mechanism 120 and a control element, and the concept is that the control element is used for controlling the driving mechanism 120, so that the multi-stage buffer can be adjusted in stages, different ground buffer heights can be provided in an elevator shaft pit, and therefore, the national standard regulation can be met, and enough passing space can be provided under specific conditions.

Specifically, the multistage damper 110 includes a main body bracket 111 and two damping members 112a, 112b mounted on the main body bracket 111, and the respective damping members 112a, 112b are located at different heights when driven to the working position in the vertical direction. As can be seen, the first damping element 112a is currently in the vertical working position, which has a relatively small ground clearance, whereas the first damping element 112b, when driven to the vertical working position, has a higher ground clearance relative to the first damping element 112 a. Although two buffer elements are illustrated as an example, it should be understood that under the foregoing teachings, more than two buffer elements can be arranged by adjusting the structural form of the main body bracket 111 (for example, adjusting it to a form of an approximately fan-shaped skeleton), and each buffer element has a different ground buffer height when driven to the working position in the vertical direction, thereby realizing different requirements for the passage space of the hoistway pit.

In addition, the driving mechanism 120 includes a power source 121 and a retractable push rod 122. The retractable push rod 122 is pivotally connected to the main body bracket 111, so that the two have a linkage relationship, and further, the rotation of the main body bracket 111 can be realized by adjusting the retractable length of the retractable push rod 122, and finally, at least one of the buffer elements is rotated to the working position. The power source 121 is used for providing power for the retractable push rod 122 to facilitate the retraction thereof. Considering that the buffer element, the main body bracket and the telescopic push rod which are in the working position need to keep relatively stable connection relation, the telescopic push rod can be further provided with a self-locking element, and when the telescopic push rod moves to a set position, self-locking can be realized, so that a more stable effect is provided.

Furthermore, in order to realize the automatic adjustment of the buffer height of the elevator buffer device relative to the ground, the elevator buffer device also comprises a control element. The control element is used for controlling the telescopic length of the telescopic push rod 122 of the driving mechanism 120, so that one of the plurality of buffer elements 112a, 112b on the main body bracket 111 is driven to the working position.

Under the arrangement, according to the elevator buffer device, the proper driving mechanism 120 is configured for the multi-stage buffer 110, so that the height of the buffer device can be automatically adjusted according to the requirement, and the requirement of an elevator system on the arrangement height of the buffer device in various conventional and unconventional running states is met; in addition, the driving mechanism 120 reasonably utilizes the telescopic push rod 122 to reduce the required power for driving and adjusting the multi-stage buffer 110, so that the power source 121 of the driving mechanism 120 can be miniaturized and is more suitable for the compact structural space in the elevator shaft.

In addition, with respect to the automatic adjustment of the elevator buffer described in this application, it should be appreciated that the multi-stage buffers are adjusted to the appropriate height to ensure that maintenance personnel or other personnel have been adjusted to the appropriate height before entering the hoistway pit and that maintenance personnel or other personnel have been adjusted to the appropriate height after leaving the hoistway pit. The command to the control element before entry and after exit can be issued in a number of ways.

For example, the control element may be configured to communicate with a specific mobile terminal to directly receive a control command from a maintenance person, with sufficient hardware support.

As another example, it is also possible to configure the control element to directly communicate with the elevator controller and control the driving mechanism 120 to drive the multistage damper 110 upon receiving an elevator operation abnormality signal from the elevator controller such that one of the two damping elements 112a, 112b on the main body bracket 111 driven to the working position has the first height; and controls the driving mechanism 120 to drive the multi-stage buffer 110 such that the other of the two buffering members 112a, 112b on the main body bracket 111 driven to the working position has the second height, upon receiving an elevator operation normal signal from the elevator controller; wherein the first height is greater than the second height.

This is because, according to the national standards, the empty space of the shaft pit should normally be kept as small as possible during normal operation of the elevator, for example, the second height should be at least not higher than 200 mm; when the elevator is abnormal, in order to facilitate maintenance personnel to enter the shaft pit for overhauling, the buffering space of the shaft pit reserved for the buffering element is made as large as possible, for example, the first height is at least not lower than 600 mm, so as to avoid safety problems.

Further description will be developed below with respect to the specific configuration of each mechanism and the mutual connection relationship or positional relationship thereof in the aforementioned elevator buffer.

First, the buffer members 112a, 112b include a first buffer member 112a mounted at the first end 111a of the body frame 111 and a second buffer member 112b mounted at the second end 111b of the body frame 111; wherein the first buffer member 112a or the second buffer member 112b is located above the main body bracket 111 in the vertical direction when it is driven to the working position. Referring to the drawings, it is understood that the end portions referred to in the present application refer to portions near both ends of the main body frame 111, and are not limited to only two end surfaces, but include both end surfaces and a partial section extending toward the center of the main body frame 111. It is also clear that the mentioned damping elements mounted on the end portions, either on the end face (as shown by the second damping element 112 b) or on the side sections of the body support 111 near the end face (as shown by the first damping element 112 a), are selected in particular in such a way that their mounting positions, when moved to the vertical direction, can be positioned just above the body support 111, thus providing the desired damping of the car.

In addition, in order to provide a stable and reliable mounting base for the multistage damper 110, a mounting base 130 may be further provided. At this time, the first end 111a of the main body bracket 111 is pivoted to the mounting base 130, that is, the different buffer elements are switched to their working positions by the rotational movement of the main body bracket 111 relative to the mounting base 130. On this basis, the multistage damper 110 further includes a stopper member 131 provided on the mounting base 130. When the second buffer member 112b is driven to the working position, the swing of the first end 111a of the main body frame 111 in the direction perpendicular to the plane of the pivot locus is restricted by the stopper member 131, thereby ensuring that the main body frame is stable after moving into position.

For another example, the power source 121 may be disposed near the second end 111b of the main body frame 111, the first end 122a of the retractable push rod 122 is pivotally connected to the power source 121, and the second end 122b of the retractable push rod 122 is pivotally connected to the first end 111a of the main body frame 111; wherein the second end 122b of the telescopic push rod 122 is kept higher than the first end 122a of the telescopic push rod 122 in the vertical direction during the telescopic stroke of the telescopic push rod 122. The arrangement mode enables the driving point of the power source 121 to be as far away from the pivot shaft 132 of the main body support 111 as possible, and changes of driving torque are achieved by adjusting the included angle and the length of the telescopic push rod, so that the torque enough for driving the main body support is provided by matching a motor with relatively small rated power with a long force arm, the motor with small power correspondingly has a small size, and the arrangement mode is more suitable for compact space arrangement in a pit.

Specifically, as can be seen in fig. 2, the angle of the retractable push rod 122 relative to the horizontal at the minimum length is related to: the minimum length, the maximum length, the stroke length of the retractable push rod 122 and the rated power of the power source 121. For example, when the retractable push rod 122 is at a minimum length, its included angle with respect to the horizontal plane is at a minimum, and the first buffer member 112a is at the working position; when the telescopic pushing rod 122 is at the maximum length, the included angle between the telescopic pushing rod 122 and the horizontal plane is the maximum, and at this time, the second buffering element 112b is at the working position; in addition, the power rating of the power source 121 is configured based on the weight of the device, and as the weight increases, the required power rating increases accordingly.

Returning to fig. 1, to further improve the possibility of selecting the angle, the multistage damper 110 further includes a vertical connector disposed at the first end 111a of the body bracket 111, the vertical connector having a height higher than that of the body bracket 111. At this time, when a larger included angle is required by design, it can be realized by pivotally connecting the second end 122b of the retractable push rod 122 to the upper portion of the vertical connecting member and indirectly to the first end 111a of the main body bracket 111.

Furthermore, as can be seen from the illustration, when the first buffer member 112a is driven to the working position, the main body bracket 111 assumes a lying form, and when the car abuts against the first buffer member 112a, the supporting force will be provided by the side of the entire main body bracket 111. In this case, it may be considered to reduce the pressure by increasing the force receiving area. For example, a support tab 113 is further provided between the first end 111a and the second end 111b of the main body bracket 111; at this time, when the first buffer member 112a is driven to the working position, the side of the body bracket 111 and the support tab 113 together provide a support force.

Further, alternatively, the main body frame 111 may be configured as a hollow extruded member in which reinforcing ribs are built, thereby reducing the weight of parts while securing strength.

Further, although not shown, an embodiment of an elevator system is provided herein. The elevator system comprises an elevator controller, a car and the elevator buffer device 100 in any of the foregoing embodiments or combinations thereof, and thus has technical effects brought by the elevator buffer device, which are not described herein again. Further, the elevator controller is configured to communicate with a control element of the elevator buffer 100; wherein the control unit controls the driving mechanism 120 to drive the multi-stage buffer 110 upon receiving a car operation abnormality signal from the elevator controller such that one of the plurality of buffer units 112a, 112b on the main body frame 111 driven to the working position has a first height; and controls the driving mechanism 120 to drive the multi-stage buffer 110 such that another one of the plurality of buffer members 112a, 112b of the main body frame 111 driven to the working position has a second height, upon receipt of an elevator operation normal signal from the elevator controller; wherein the first height is greater than the second height. This is because, according to the national standards, the empty space of the shaft pit should normally be kept as small as possible during normal operation of the elevator, for example, the second height should be at least not higher than 200 mm; when the elevator is abnormal, in order to facilitate maintenance personnel to enter the shaft pit for overhauling, the buffering space of the shaft pit reserved for the buffering element is made as large as possible, for example, the first height is at least not lower than 600 mm, so as to avoid safety problems.

Under the arrangement, the automatic adjustment of the elevator buffer device is directly related to the elevator controller of the elevator system, so that when the elevator system normally operates, the multi-stage buffer in the elevator buffer device is always in a state of arranging the buffer element with lower height at the working position, and the design specification completely meets the national standard requirement; when the elevator system operates abnormally, the elevator controller directly sends a control signal to the control element of the elevator buffer device to control the driving mechanism to adjust the multi-stage buffer, and the buffer element with higher height is arranged at the working position, so that enough buffer height is reserved for the well pit, and the safety of maintenance personnel in the operation of the well pit is ensured.

Furthermore, optionally, the arrangement position of the elevator buffer 100 relative to the car and the relative positional relationship between the elements of the elevator buffer 100 can also be adjusted so that when the buffer elements 112a, 112b in the elevator buffer 100 are driven to the working position in the vertical direction, the buffer elements 112a, 112b are each positioned within the 100 mm interval of the center of the bottom of the car in the vertical direction.

The above examples mainly describe the elevator buffer and the elevator system of the present application. Although only a few embodiments of the present application have been described, those skilled in the art will appreciate that the present application may be embodied in many other forms without departing from the spirit or scope thereof. Accordingly, the present examples and embodiments are to be considered as illustrative and not restrictive, and various modifications and substitutions may be made therein without departing from the spirit and scope of the present application as defined in the appended claims.