An escalator step missing detection device

Abstract

This application relates to the field of escalator technology, and in particular to an escalator step missing detection device, including an escalator body, escalator steps arranged on the inner side of the escalator body, and a fixed inner cavity opened on the inner side of the escalator body. A fixed box is fixedly connected to the inner side of the fixed inner cavity near the side of the escalator step. Through several sets of guide holes, sliding bases and corresponding auxiliary rollers arranged at equal intervals on the outer side of the fixed box, detection can be performed simultaneously at multiple different positions of the escalator steps, with a wide coverage range, effectively avoiding omissions in single-point detection, and improving the comprehensiveness and accuracy of step missing detection. Each set of sliding bases, conductive springs and conductive contacts independently corresponds to a specific step position. When a step is missing, only the conductive spring at the corresponding position contacts and conducts electricity, thereby triggering different states of the alarm light, realizing the precise location of the missing step, facilitating rapid troubleshooting and maintenance.

Description

Technical Field

[0001] This application relates to the technical field of escalators, and in particular to an escalator step missing detection device. Background Technology

[0002] Escalators, as an indispensable mode of transportation in modern urban life, are of paramount importance in terms of safety. However, in actual operation, escalators sometimes experience missing steps, posing a safety hazard to passengers. Existing step-missing detection devices mostly rely on photoelectric sensing technology, which, while highly sensitive, is susceptible to environmental interference and has high maintenance costs. Furthermore, there is a lack of suitable solutions for retrofitting existing escalators with step-missing detection functionality. Therefore, developing a more stable and reliable mechanically operated, switch-type escalator step-missing detection device is of significant practical importance.

[0003] Traditional devices employ an integrated detection structure, which can only trigger a general alarm when a step is missing, failing to identify the specific location of the missing step through changes in circuit status. For example, photoelectric switch systems can only provide an overall missing signal, unable to distinguish the specific missing step number, increasing the difficulty of maintenance and troubleshooting.

[0004] Therefore, in order to solve the above problems, this application provides an escalator step missing detection device. Utility Model Content

[0005] The purpose of this invention is to provide an escalator step missing detection device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an escalator step missing detection device, comprising an escalator body, escalator steps disposed on the inner side of the escalator body, a fixed inner cavity formed on the inner side of the escalator body, a fixed box fixedly connected to the inner side of the fixed inner cavity near the side of the escalator steps, an alarm light fixedly connected to the top of the escalator body, a power supply fixedly connected to the inner bottom wall of the fixed box cavity, a plurality of guide holes penetrating into the inner cavity being equidistantly formed on the outer side of the fixed box, and a plurality of sliding bases slidably connected at equal intervals above the inner bottom wall of the fixed box cavity. A support plate is fixedly connected to the upper side of the sliding base near the guide hole. An auxiliary roller is rotatably connected to the inner side of the support plate near the escalator step. A slot is opened on the inner side of the sliding base, and a conductive spring is fixedly connected inside it. A fixed bracket is fixedly connected to the power supply inside the fixed box. An elastic element is fixedly connected between the sliding base and the fixed bracket. A protective wire is fixedly connected below the alarm light. Several sets of conductive contacts are fixedly connected to the inner wall of the fixed box. A first wire is fixedly connected to the positive terminal of the power supply. A second wire and a third wire are provided inside the protective wire.

[0007] Preferably, the support plate is slidably connected to the inside of the guide hole, and the number and position of the support plate and the guide hole correspond to each other.

[0008] Preferably, when the elastic element naturally elongates without being subjected to external force, the elastic element is in a fully compressed state, and all sets of auxiliary rollers are in close contact with the outer side of the escalator steps.

[0009] Preferably, the number and position of the conductive contacts and conductive springs correspond to each other.

[0010] Preferably, the two ends of the second wire are electrically connected to the negative terminal of the alarm light and the negative terminal of the power supply, respectively.

[0011] Preferably, the two ends of the third wire are electrically connected to the positive terminal of the alarm light and the conductive spring on the inner side of the sliding base, respectively.

[0012] Preferably, both ends of the first wire are electrically connected to the positive terminal of the power supply and multiple sets of conductive contacts, respectively.

[0013] In summary, this application includes the following beneficial technical effects:

[0014] By using several sets of guide holes, sliding bases, and corresponding auxiliary rollers equidistantly arranged on the outside of the fixed box, simultaneous detection can be performed at multiple different positions on the escalator steps, providing a wide coverage and effectively avoiding omissions in single-point detection. This improves the comprehensiveness and accuracy of step loss detection. Each set of sliding bases, conductive springs, and conductive contacts independently corresponds to a specific step position. When a step is missing, only the conductive spring and conductive contact at the corresponding position make contact and conduct electricity, thereby triggering different states of the alarm light, achieving precise location of the missing step, and facilitating rapid troubleshooting and repair. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an escalator step missing detection device according to an embodiment of this application;

[0016] Figure 2 This is a side sectional view of an escalator step missing detection device according to an embodiment of this application;

[0017] Figure 3 This is a side sectional view of the fixed box in an escalator step missing detection device according to an embodiment of this application;

[0018] Figure 4 This is a schematic diagram of the structure of the conductive spring in an escalator step missing detection device according to an embodiment of this application;

[0019] Figure 5This is a schematic diagram of the structure of the conductive contact in an escalator step missing detection device according to an embodiment of this application.

[0020] Explanation of reference numerals in the attached drawings: 1. Escalator body; 2. Escalator step; 3. Fixed inner cavity; 4. Fixed housing; 5. Alarm light; 6. Power supply; 8. Guide socket; 9. Sliding base; 10. Support plate; 11. Auxiliary roller; 12. Conductive spring; 13. Fixed bracket; 14. Elastic element; 15. Protective wire; 16. Conductive contact; 17. First conductor; 18. Second conductor; 19. Third conductor. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1 - Figure 5 This application will be described in further detail.

[0022] An escalator step missing detection device, referring to Figure 1 - Figure 4 The escalator includes an escalator body 1, escalator steps 2 on the inner side of the escalator body 1, a fixed inner cavity 3 on the inner side of the escalator body 1, a fixed housing 4 fixedly connected to the inner side of the fixed inner cavity 3 near the side of the escalator steps 2, an alarm light 5 fixedly connected to the top of the escalator body 1, a power supply 6 fixedly connected to the inner bottom wall of the inner cavity of the fixed housing 4, several sets of guide holes 8 equidistantly opened on the outer side of the fixed housing 4, penetrating into its inner cavity, several sets of sliding bases 9 equidistantly slidably connected to the upper side of the inner bottom wall of the inner cavity of the fixed housing 4, and a support plate 10 fixedly connected to the upper side of the sliding base 9 near the side of the guide holes 8. The support plate 10 is slidably connected to the inside of the guide hole 8. The number and position of the support plate 10 and the guide hole 8 are corresponding. An auxiliary roller 11 is rotatably connected to the inside of the support plate 10 near the escalator step 2. A slot is opened on the inside of the sliding base 9, and a conductive spring 12 is fixedly connected inside it. A fixed bracket 13 is fixedly connected to the inside of the fixed box 4 in close contact with the power supply 6. An elastic element 14 is fixedly connected between the sliding base 9 and the fixed bracket 13. When the elastic element 14 is naturally stretched without being subjected to external force, the elastic element 14 is in a fully compressed state. Multiple sets of auxiliary rollers 11 are in close contact with the outside of the escalator step 2.

[0023] When the escalator step 2 is in normal condition, the auxiliary roller 11 is squeezed by the outside of the escalator step 2, which pushes the support plate 10 to slide along the guide hole 8 toward the inner cavity of the fixed box 4, causing the sliding base 9 to compress the elastic element 14, so that the elastic element 14 is in a compressed state. At this time, the conductive spring 12 and the conductive contact 16 are separated, the circuit is broken, and the alarm light 5 does not work.

[0024] Reference Figure 1 - Figure 4A protective wire 15 is fixedly connected to the bottom of the alarm light 5. Several sets of conductive contacts 16 are fixedly connected to the inner side wall of the fixed box 4. The number and position of the conductive contacts 16 and the conductive springs 12 are corresponding. When the corresponding step is missing, the elastic element 14 fully resets and extends, and the conductive contacts 16 are tightly attached to the conductive springs 12 at the corresponding positions.

[0025] When an escalator step 2 is missing at a certain position, the auxiliary roller 11 at the corresponding position loses the squeezing effect of the escalator step 2, the elastic element 14 returns to its natural elongated state, and pushes the sliding base 9 and the support plate 10 to move outward of the fixed box 4, so that the conductive spring 12 makes close contact with the conductive contact 16 at the corresponding position, providing conditions for the circuit of the alarm light 5 to be turned on.

[0026] Reference Figure 1 - Figure 5 The positive terminal of the power supply 6 is fixedly connected to the first wire 17. The inner side of the protection wire 15 is provided with the second wire 18 and the third wire 19. The two ends of the second wire 18 are electrically connected to the negative terminal of the alarm light 5 and the negative terminal of the power supply 6, respectively. The two ends of the third wire 19 are electrically connected to the positive terminal of the alarm light 5 and the conductive spring 12 on the inner side of the sliding base 9, respectively. The two ends of the first wire 17 are electrically connected to the positive terminal of the power supply 6 and multiple sets of conductive contacts 16, respectively.

[0027] When the conductive spring 12 contacts the conductive contact 16, the positive terminal of the power supply 6 is connected to the positive terminal of the alarm light 5 through the first wire 17, the conductive contact 16, the conductive spring 12, and the third wire 19. At the same time, the negative terminal of the power supply 6 is connected to the negative terminal of the alarm light 5 through the second wire 18, forming a complete closed circuit. The alarm light 5 is powered on and emits a warning signal.

[0028] The implementation principle of the escalator step missing detection device in this application embodiment is as follows: When all escalator steps 2 are intact, each auxiliary roller 11 is squeezed by the outside of the step, pushing the corresponding support plate 10 to slide along the guide hole 8 into the inner cavity of the fixed box 4, causing the sliding base 9 to compress the elastic element 14. At this time, the elastic element 14 is in a compressed energy storage state, the conductive spring 12 and the conductive contact 16 remain separated, the circuit is in an open state, and the alarm light 5 does not work. When a part of an escalator step 2 is missing, the auxiliary roller 11 at the corresponding position loses the squeezing effect of the step at the corresponding position, the compressed elastic element 14 releases its elastic force, and pushes the sliding base 9 and the support plate 10 to move outward and reset along the guide hole 8. The displacement of the sliding base 9 causes the internal conductive spring 12 to make close contact with the conductive contact 16 on the inner sidewall of the fixed box 4. After the conductive spring 12 contacts the conductive contact 16, the positive current of the power supply 6 flows sequentially through the first wire 17, the conductive contact 16, the conductive spring 12, and the third wire 19 to the positive terminal of the alarm light 5. At the same time, the negative terminal of the power supply 6 is connected to the negative terminal of the alarm light 5 through the second wire 18, forming a closed circuit. At this time, the alarm light 5 is powered on and starts, emitting a warning signal for a missing step. Each set of sliding base 9, conductive spring 12, and conductive contact 16 independently corresponds to a specific step position. When a step is missing, only the conductive spring 12 at the corresponding position contacts the conductive contact 16 to conduct electricity, thereby triggering different states of the alarm light 5 and achieving precise positioning of the missing step.

[0029] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0030] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0031] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An escalator step missing detection device, comprising an escalator body (1), characterized in that: The escalator body (1) has escalator steps (2) on its inner side. A fixed inner cavity (3) is formed inside the escalator body (1). A fixed box (4) is fixedly connected to the inner side of the fixed inner cavity (3) near the side of the escalator steps (2). An alarm light (5) is fixedly connected to the top of the escalator body (1). A power supply (6) is fixedly connected to the bottom wall of the inner cavity of the fixed box (4). Several sets of guide holes (8) penetrating into the inner cavity are equidistantly formed on the outer side of the fixed box (4). Several sets of sliding bases (9) are equidistantly slidably connected to the top of the bottom wall of the inner cavity of the fixed box (4). A support plate (10) is fixedly connected to the top of the sliding base (9) near the side of the guide hole (8). An auxiliary roller (11) is rotatably connected to the inner side of the support plate (10) near the escalator step (2). A slot is opened on the inner side of the sliding base (9), and a conductive spring (12) is fixedly connected inside it. A fixed bracket (13) is fixedly connected to the power supply (6) on the inner side of the fixed box (4). An elastic element (14) is fixedly connected between the sliding base (9) and the fixed bracket (13). A protective wire (15) is fixedly connected below the alarm light (5). Several sets of conductive contacts (16) are fixedly connected to the inner wall of the fixed box (4). A first wire (17) is fixedly connected to the positive terminal of the power supply (6). A second wire (18) and a third wire (19) are provided on the inner side of the protective wire (15).

2. The escalator step missing detection device according to claim 1, characterized in that: The support plate (10) is slidably connected to the inside of the guide hole (8), and the number and position of the support plate (10) and the guide hole (8) are corresponding.

3. The escalator step missing detection device according to claim 1, characterized in that: When the elastic element (14) is naturally stretched without being subjected to external force, the elastic element (14) is in a fully compressed state, and the multiple sets of auxiliary rollers (11) are in close contact with the outside of the escalator step (2).

4. The escalator step missing detection device according to claim 1, characterized in that: The number and position of the conductive contacts (16) and conductive springs (12) correspond to each other.

5. The escalator step missing detection device according to claim 1, characterized in that: The two ends of the second wire (18) are electrically connected to the negative terminal of the alarm light (5) and the negative terminal of the power supply (6), respectively.

6. The escalator step missing detection device according to claim 1, characterized in that: The two ends of the third conductor (19) are electrically connected to the positive terminal of the alarm light (5) and the conductive spring (12) inside the sliding base (9), respectively.

7. The escalator step missing detection device according to claim 1, characterized in that: The two ends of the first wire (17) are electrically connected to the positive terminal of the power supply (6) and multiple sets of conductive contacts (16), respectively.

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