Stair vertical displacement detection device for escalator and elevator comprising same

Abstract

The utility model relates to a step vertical displacement detection device for an escalator and the escalator comprising the step vertical displacement detection device. The stair vertical displacement detection device for the escalator comprises a supporting frame, a vertical displacement detection device and a vertical displacement detection device, wherein the supporting frame is arranged on a base frame of the escalator in a manner of changing the supporting height; the measuring piece is arranged on the supporting frame and electrically connected to an elevator control system, and the measuring piece can send a first electric signal to the elevator control system when the distance between the detection face of the measuring piece and the lower surface of the step of the corresponding escalator is a first preset distance and send a second electric signal to the elevator control system on the basis of the first preset distance; and a second electric signal is sent to the elevator control system when the distance between the detection surface and the lower surface of the step of the corresponding escalator is increased by more than a second preset distance. The escalator can automatically stop running when the stairs jump upwards abnormally, equipment damage and / or safety accidents are avoided, and the escalator has the advantages of being simple in structure, low in cost, high in applicability and better in market competition.

Description

Technical Field

[0001] The utility model relates to the field of elevators, in particular to a vertical displacement detection device for escalator steps and an elevator including the device. Background Art

[0002] An escalator is a transportation device that transports passengers in the form of a conveyor belt, and its advantage is that it can continuously transport passengers for a long time. Compared with vertical elevators, escalators have a higher efficiency in transporting passengers per unit time, so they are widely used in public places with large passenger flows such as shopping malls, airports, high-speed railway stations, and subway stations.

[0003] Due to the complex operating environment of escalators, there may be solid particles such as dust on the ladder track, or foreign objects may be caught between two escalator steps or between the steps and the skirt board. As a result, the escalator steps are prone to jump upwards during operation, which not only may damage the components of the escalator, but also affect the comfort of passengers taking the escalator and even cause safety accidents. Therefore, there is an urgent need for a device that can automatically stop the escalator when detecting abnormal upward jumping of the steps to avoid equipment damage and / or safety accidents.

[0004] To solve the above problems, a detection system using a resistance wire and a step contact to form a detection circuit is disclosed in Chinese invention patent CN116750620A. However, this detection system has a complex structure and high cost, and due to the fixed contact space between the resistance wire and the step contact, the applicability of this detection system in different ladder types is poor.

[0005] The information disclosed in the background art part of the present utility model is only intended to increase the understanding of the overall background of the present utility model, and should not be regarded as an admission or any form of implication that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Utility Model

[0006] Aiming at the defects existing in the prior art, the present utility model aims to provide a vertical displacement detection device for escalator steps, which can automatically stop the escalator when the steps jump upwards abnormally to avoid equipment damage and / or safety accidents, and has a simple structure, low cost and strong applicability, and has better market competitiveness.

[0007] According to a first aspect of the present utility model, the present utility model provides a step vertical displacement detection device for an escalator, comprising: a support frame, which is arranged on the base frame of the escalator such that its support height can be changed; and a measuring member, which is arranged on the support frame and electrically connected to an elevator control system, wherein the measuring member can send a first electrical signal to the elevator control system when the distance between its detection surface and the lower surface of the corresponding step of the escalator is a first predetermined distance, and on the basis of the first predetermined distance, the measuring member can send a second electrical signal to the elevator control system when the distance between its detection surface and the lower surface of the corresponding step of the escalator increases by more than a second predetermined distance.

[0008] According to an exemplary embodiment of the present utility model, the first predetermined distance is 4 - 5 mm, and the first electrical signal is a signal for normal operation of the elevator.

[0009] According to an exemplary embodiment of the present utility model, the second predetermined distance is 4 mm, and the second electrical signal is a signal for stopping the elevator.

[0010] According to an exemplary embodiment of the present utility model, the support frame comprises: a first support plate, whose cross-section is in an "L" shape, one end of the first support plate is fixed to the base frame of the escalator, and the other end of the first support plate is bent upward; and a second support plate, whose cross-section is in an "L" shape, the second support plate is fixed to the first support plate such that it can slide vertically relative to the first support plate, and the upper end of the second support plate is bent horizontally; wherein, the measuring member is arranged at the upper end of the second support plate and the measuring surface of the measuring member faces upward.

[0011] According to an exemplary embodiment of the present utility model, the other end of the first support plate is provided with a mounting hole and a fastening bolt inserted into the mounting hole; the second support plate is provided with a chute extending in the vertical direction; the fastening bolt is inserted into the chute and can slide relative to the chute, and is fixed to the first support plate after the second support plate slides vertically through cooperation with a fastening nut.

[0012] According to a second aspect of the present utility model, the present utility model provides an elevator, comprising the step vertical displacement detection device for an escalator as described in the first aspect.

[0013] The step vertical displacement detection device for an escalator of the present utility model can not only automatically stop the operation of the escalator when the step abnormally jumps upward to avoid equipment damage and / or cause safety accidents, but also has the advantages of simple structure and low cost.

[0014] Meanwhile, by providing a support member capable of changing the support height, it is beneficial for the step vertical displacement detection device for escalators of the present utility model to adapt to different escalator types, enhancing the market competitiveness advantage.

[0015] The device of the present utility model has other characteristics and advantages, which will be apparent from the accompanying drawings incorporated herein and the subsequent embodiments, or will be described in detail in the accompanying drawings incorporated herein and the subsequent embodiments. These accompanying drawings and embodiments are jointly used to explain the specific principles of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the step vertical displacement detection device for escalators according to an embodiment of the present utility model disposed on the base frame of the escalator.

[0017] Figure 2 Schematic diagram of the structure of the second support plate of the step vertical displacement detection device for escalators according to an embodiment of the present utility model.

[0018] Figure 3 Another schematic diagram of the structure of the second support plate of the step vertical displacement detection device for escalators according to an embodiment of the present utility model.

[0019] Description of the reference numerals in the drawings:

[0020] 100: Base frame

[0021] 200: Step wheel guide rail

[0022] 300: Step

[0023] 400: Support frame 410: First support plate

[0024] 411: Fastening bolt 420: Second support plate

[0025] 421: Chute 422: Fastening nut

[0026] 500: Measuring member 510: Detection surface

[0027] D: First predetermined distance.

[0028] In the drawings, the same or similar components with the same or similar functions are denoted by the same reference numerals. The drawings are only used for schematically illustrating the present utility model and do not limit the protection scope of the present utility model.

[0029] It should be understood that the accompanying drawings are not necessarily drawn to scale, but rather present a simplified representation of various features to illustrate the basic principles of the present utility model. The specific design features disclosed in the present utility model (including, for example, specific dimensions, directions, positions, and shapes) will be determined in part by the specific environment in which it is to be applied and used.

[0030] In these figures, throughout the several views of the drawings, like reference numerals denote the same or equivalent parts of the present utility model. Detailed Description of the Invention

[0031] Reference will now be made in detail to the various embodiments of the present utility model, examples of which are illustrated in the accompanying drawings and described below. Although the present utility model will be described in conjunction with the exemplary embodiments, it should be understood that this specification is not intended to limit the present utility model to these exemplary embodiments. On the contrary, the present utility model is intended to cover not only these exemplary embodiments, but also various alternative forms, modifications, equivalent forms, and other embodiments that may be included within the spirit of the present utility model and the scope defined by the appended claims.

[0032] The following will be combined with Figures 1 to 3 to describe the structure of the step vertical displacement detection device for an escalator according to the present utility model.

[0033] Figure 1 is a schematic diagram of the step vertical displacement detection device for an escalator according to an embodiment of the present utility model provided on the base frame 100 of the escalator.

[0034] First of all, it should be noted that the escalator system to which the step vertical displacement detection device for an escalator according to the present utility model is applied includes the base frame 100 of the escalator, the step wheel guide rails 200 and the step assembly installed on the base frame 100, and the step assembly includes a plurality of steps 300. The step vertical displacement detection device for an escalator according to the present utility model can be provided at a predetermined position of the base frame 100 and measure each step 300 of the corresponding escalator passing above the step vertical displacement detection device. Among them, the predetermined position of the base frame 100 can be the curved section of the escalator or the straight section of the escalator. That is to say, the step vertical displacement detection device can be respectively provided at the curved section and / or the straight section of the escalator, or can be provided at the curved section and / or the straight section of the escalator at the same time.

[0035] As Figure 1 shown, the step vertical displacement detection device for an escalator according to an embodiment of the present utility model includes: a support frame 400 and a measuring member 500.

[0036] The support frame 400 is arranged at a predetermined position of the base frame 100 of the escalator so that its support height can be changed. The measuring member 500 is arranged on the support frame 400 and electrically connected to the elevator control system. When the distance between the detection surface 510 of the measuring member 500 and the lower surface of the corresponding step 300 of the escalator is a first predetermined distance, the measuring member 500 can send a first electrical signal to the elevator control system. Based on the first predetermined distance, when the distance between the detection surface 510 of the measuring member 500 and the lower surface of the corresponding step 300 of the escalator increases by a second predetermined distance or more than the second predetermined distance, the measuring member 500 can send a second electrical signal to the elevator control system.

[0037] According to an exemplary embodiment of the present invention, the first predetermined distance is 4 - 5 mm. The first electrical signal is a signal for the normal operation of the elevator. That is to say, when each step 300 passes by the measuring member 500 and the distance between the detection surface 510 of the measuring member 500 and the lower surface of the corresponding step 300 of the escalator is between 4 - 5 mm, the measuring member 500 sends a signal for normal operation to the elevator control system, so that the elevator control system controls the escalator to maintain a normal operating state.

[0038] According to an exemplary embodiment of the present invention, the second predetermined distance is 4 mm. The second electrical signal is a signal for stopping the elevator. That is to say, when each step 300 passes by the measuring member 500, and based on the first predetermined distance, when the distance between the detection surface 510 of the measuring member 500 and the lower surface of the corresponding step 300 of the escalator increases by 4 mm (the step 30 jumps up 4 mm) or more, the measuring member 500 sends a signal for stopping the elevator to the elevator control system, so that the elevator control system controls the escalator to stop running.

[0039] Preferably, the measuring member 500 described in the present invention is a photoelectric sensor. When each step 300 passes by the photoelectric sensor and the distance between the detection surface of the photoelectric sensor and the lower surface of the corresponding step 300 of the escalator is between 4 - 5 mm, the photoelectric sensor sends a high-level electrical signal of 24V to the elevator control system as a signal for maintaining the normal operation of the escalator. In this case, the elevator control system controls the escalator to maintain a normal operating state.

[0040] When each step 300 passing by the measuring member 500 jumps up more than 4 mm, the photoelectric sensor cannot detect the corresponding step 300, and thus cannot send a high-level electrical signal of 24V to the elevator control system. In this case, the abnormal electrical signal can be used as a signal for stopping the elevator, so that the elevator control system controls the escalator to stop running.

[0041] Among them, the photoelectric sensor is a relatively common sensing element in the prior art, and its working principle is also well-known to those skilled in the art, so it will not be elaborated herein. In addition, it should be noted that as an option, the measuring member 500 can also be other sensing elements, and the first predetermined distance can be other values except 4-5 mm, and the second predetermined distance can also be other values not exceeding 4 mm. This is not limited herein as long as the above functions can be achieved.

[0042] Through the above technical solution, the step vertical displacement detection device for an escalator of the present utility model can automatically stop the escalator operation when each step 300 passing through the measuring member 500 jumps upward by more than 4 mm, so that the escalator can effectively avoid equipment damage and / or safety accidents caused by the existence of solid particles on the step rail.

[0043] According to an exemplary embodiment of the present utility model, as Figure 1 shown, the support frame 400 includes a first support plate 410 and a second support plate 420. The cross-section of the first support plate 410 is formed in an "L" shape. One end of the first support plate 410 can be fixed to a predetermined position of the base frame 100 of the escalator by fasteners such as bolts and is located below the corresponding step wheel guide rail 200. The other end of the first support plate 410 is bent upward. The cross-section of the second support plate 420 is also formed in an "L" shape. The second support plate 420 is slidably fixed to the first support plate 410 in the vertical direction relative to the first support plate 410, and the upper end of the second support plate 420 is bent horizontally. Among them, the measuring member 500 is disposed at the upper end of the second support plate 420, and the measuring surface 510 of the measuring member 500 faces the lower surface of the corresponding step 300 of the escalator above.

[0044] Furthermore, the other end of the first support plate 410 is provided with a mounting hole and a fastening bolt 411 inserted into the mounting hole. Cooperating Figure 2 and Figure 3As shown, the second support plate 420 is provided with a chute 421 extending in the vertical direction. Among them, the fastening bolt 411 is inserted into the chute 421 and can slide relative to the chute 421. That is to say, when the fastening bolt 411 is inserted into the chute 421, the second support plate 420 can slide in the vertical direction relative to the first support plate 410, and after sliding a predetermined distance, through the cooperation of the fastening bolt 411 and the fastening nut 422, the second support plate 420 is fixed on the first support plate 410, so that the support frame 400 can be arranged on the base frame 100 of the escalator with a variable support height. In this way, the measuring member 500 arranged at the upper end of the second support plate 420 can adjust the distance between its detection surface 510 and the lower surface of the corresponding step 300 of the escalator according to actual needs, so as to achieve the detection purpose and ensure the detection accuracy, which is beneficial to the step vertical displacement detection device for escalators of the present utility model to adapt to different step types and improves the market competition advantage.

[0045] The present utility model also provides an elevator, which includes the above-mentioned step vertical displacement detection device for escalators.

[0046] The working principle of the step vertical displacement detection device for escalators in the implementation scheme of the present utility model will be described below with reference to the accompanying drawings.

[0047] Generally, the escalator runs normally. At this time, when each step 300 passes through the measuring member 500 and the distance between the detection surface 510 of the measuring member 500 and the lower surface of the corresponding step 300 of the escalator is 4 - 5 mm, the measuring member 500 sends a 24V high-level electrical signal to the elevator control system as a signal to keep the escalator running normally, so that the elevator control system controls the escalator to maintain the normal running state.

[0048] When each step 300 passes through the measuring member 500, and on the basis of 4 - 5 mm, the distance between the detection surface 510 of the measuring member 500 and the lower surface of the corresponding step 300 of the escalator increases by more than 4 mm (the step 300 jumps up 4 mm), the measuring member 500 cannot send a 24V high-level electrical signal to the elevator control system. In this case, the abnormal electrical signal can be used as a stop signal for the escalator, so that the elevator control system controls the escalator to stop running.

[0049] The step vertical displacement detection device for escalators of the present utility model can automatically stop the escalator when each step passing through the measuring member jumps up abnormally, so that the escalator can avoid equipment damage and / or safety accidents caused by reasons such as the existence of solid particles on the step guide rail.

[0050] Meanwhile, the step vertical displacement detection device for escalators of the present utility model has the advantages of simple structure and low cost. Moreover, by providing a support member capable of changing the support height, it is beneficial for the step vertical displacement detection device for escalators of the present utility model to adapt to different escalator types, thereby enhancing the market competitiveness advantage.

[0051] For the purpose of facilitating explanation and precisely defining the appended claims, the terms "upper", "lower", "inner", "outer", "above", "below", "upper surface", "lower surface", "above-mentioned", "below-mentioned", "upward", "downward", "front", "rear", "behind", "inner side", "outer side", "inward", "outward", "inside", "outside", "internal", "external", "forward", "backward" are used to describe the features of the exemplary specific embodiments with reference to the positions of these features shown in the accompanying drawings.

[0052] The foregoing description of the specific exemplary embodiments of the present utility model has been presented for purposes of illustration and description. The foregoing description is not intended to be exhaustive nor to limit the present utility model to the precise form disclosed, and obviously, many changes and variations are possible in light of the above teachings. The exemplary embodiments were chosen and described in order to explain the particular principles of the present utility model and its practical application, thereby enabling others skilled in the art to implement and utilize the various exemplary embodiments of the present utility model and their various alternative forms and modifications. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A step vertical displacement detection device for an escalator, characterized in that: include: A support frame, which is arranged on the base frame of the escalator so as to be able to change the support height; as well as A measuring piece is arranged on the support frame and electrically connected to the elevator control system. The measuring piece can send a first electrical signal to the elevator control system when the distance between its detection surface and the lower surface of the corresponding escalator step is a first predetermined distance, and based on the first predetermined distance, the measuring piece can send a second electrical signal to the elevator control system when the distance between its detection surface and the lower surface of the corresponding escalator step increases to more than a second predetermined distance.

2. The step vertical displacement detection device for an escalator according to claim 1, characterized in that: The first predetermined distance is 4-5 mm, and the first electrical signal is a signal of normal operation of the elevator.

3. The step vertical displacement detection device for an escalator according to claim 1, characterized in that: The second predetermined distance is 4 mm, and the second electrical signal is an elevator stop signal.

4. The step vertical displacement detection device for an escalator according to claim 1, characterized in that: The support frame comprises: A first support plate, whose cross section is formed into an "L" shape, one end of the first support plate is fixed to the base frame of the escalator, and the other end of the first support plate is bent upward; and A second support plate, whose cross section is formed into an "L" shape, the second support plate is fixed on the first support plate so as to be slidable in a vertical direction relative to the first support plate, and the upper end of the second support plate is bent in a horizontal direction; Wherein, the measuring piece is arranged at the upper end of the second supporting plate and the measuring surface of the measuring piece faces upward.

5. The device for detecting vertical displacement of steps of an escalator according to claim 4, characterized in that: The other end of the first support plate is provided with a mounting hole and a fastening bolt inserted into the mounting hole; The second support plate is provided with a slide groove extending in a vertical direction; The fastening bolt is inserted into the slide groove and can slide relatively along the slide groove, and cooperates with the fastening nut to enable the second support plate to slide along the vertical direction and then be fixed on the first support plate.

6. An elevator, characterized in that: The invention comprises a step vertical displacement detection device for an escalator as described in any one of claims 1 to 5.

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