Escalator anti-pinch device and escalator

Abstract

The escalator anti-pinch device comprises a skirt guard panel, at least two pressure sensors are arranged on the side face of the skirt guard panel, and one pressure sensor is connected with an amplifier; the connector is provided with a male end and a female end, the male end is in butt joint with the female end, the male end is connected with one pressure sensor, and the female end is connected with the other pressure sensor; the plurality of pressure sensors are connected in series through the connector, so that only one amplifier is needed to amplify signals, the use of a plurality of amplifiers is avoided, the plurality of pressure sensors cover each area of the skirt guard panel, the pressure generated by each part is effectively sensed, the sensing effect is kept, and meanwhile, the safety of the skirt guard panel is improved. And the cost is reduced, and the structure is simpler.

Description

Technical Field

[0001] This utility model relates to the field of escalators, and in particular to an escalator anti-pinch device and an electric escalator. Background Technology

[0002] Escalators are a common type of vertical transportation equipment, widely used in public places such as shopping malls, subway stations, and airports. They use an electric motor to drive a chain or sprocket, which in turn drives the steps in a circular motion to transport passengers.

[0003] Escalator skirts are an important safety component of escalators, located on both sides of the steps. Their main function is to prevent passengers' shoelaces, trouser legs, long skirts, and other items from getting caught in the gap between the steps and the skirt, thus avoiding pinching injuries. There is a gap between the skirt and the side of the steps; during normal operation, the gap between the skirt and the steps should not exceed 4mm on any one side, and the sum of the gaps on both sides should not exceed 7mm.

[0004] Pressure sensors are installed on the skirt board to detect whether there are objects stuck between the skirt board and the steps. Traditional skirt boards only use pressure sensors to detect whether there are objects stuck, but relying solely on pressure sensors may have weak detection capabilities. Therefore, an amplifier is required. The amplifier is connected to the pressure sensor to amplify the voltage signal of the pressure sensor and improve its sensing capability. The length of the skirt board depends on the length of the escalator. Usually, multiple pressure sensors need to be installed on the skirt board, and each pressure sensor needs to be connected to an amplifier to ensure signal amplification. This results in high cost and complex structure. Utility Model Content

[0005] To overcome the shortcomings of existing technology, which requires multiple pressure sensors to be installed on the apron board and each pressure sensor needs to be connected to a separate amplifier to ensure signal amplification, resulting in high cost and complex structure.

[0006] First aspect

[0007] This utility model provides an escalator anti-pinch device, comprising:

[0008] The apron board has at least two pressure sensors on the side, one of which is connected to an amplifier.

[0009] The connector has a male end and a female end. The male end mates with the female end, and the male end is connected to one of the pressure sensors, while the female end is connected to the other pressure sensor.

[0010] Optionally, the connector is a coaxial aviation connector.

[0011] Optionally, the apron board is provided with a limiting member, and there is a gap between the limiting member and the apron board, and the pressure sensor is disposed in the gap.

[0012] Optionally, the limiting member is a first C-shaped plate.

[0013] Optionally, the first C-shaped plate is provided with a through hole, and the apron plate is provided with a bolt, which passes through the through hole in the first C-shaped plate.

[0014] Optionally, a height-limiting washer is fitted onto the bolt, with the height-limiting point located between the first C-shaped plate and the apron plate.

[0015] Optionally, the bottom of the first C-shaped plate is provided with a height limiting rib.

[0016] Optionally, the apron panel has folded edges on both sides.

[0017] Optionally, a second C-shaped board is also provided on the apron board.

[0018] Second aspect

[0019] This utility model provides an escalator, including the escalator anti-pinch device described in the first aspect.

[0020] The beneficial effects of this utility model are: by connecting multiple pressure sensors in series through a connector, only one amplifier is needed to amplify the signal, avoiding the need for multiple amplifiers. Furthermore, the multiple pressure sensors cover various areas of the apron board, effectively sensing the pressure generated in each part. While maintaining the sensing effect, the cost is reduced and the structure is made simpler. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 These are assembly diagrams from some embodiments;

[0023] Figure 2 These are schematic diagrams of the exploded structures in some embodiments;

[0024] Figure 3 These are cross-sectional views from some embodiments;

[0025] Figure 4 yes Figure 3 Enlarged view of section A in the middle;

[0026] Figure 5 These are cross-sectional views from some embodiments;

[0027] Figure 6 yes Figure 5 Enlarged view of section B in the middle.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Apron board; 2. Pressure sensor; 3. Amplifier; 5. Connector; 6. First C-shaped plate; 7. Height limiting pad; 61. Height limiting rib; 11. Folded edge; 8. Second C-shaped plate. Detailed Implementation

[0030] The following will clearly and completely describe the concept, specific structure, and technical effects of this utility model in conjunction with embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are all within the scope of protection of this utility model. Furthermore, all connections / linkages involved in the patent do not simply refer to direct contact between components, but rather to the ability to form a better connection structure by adding or reducing connecting accessories according to specific implementation conditions. The various technical features in this utility model can be combined interactively without contradicting each other.

[0031] This utility model provides an escalator anti-pinch device for use in the field of electric escalators. Typically, electric escalators include moving steps. The anti-pinch device is used to prevent pinching accidents and includes: a skirt panel 1, with at least two pressure sensors 2 on its side, one of which is connected to an amplifier 3; and a connector 5, having a male and a female end, with the male end connecting to one of the pressure sensors 2 and the female end connecting to the other pressure sensor 2. The pressure sensors 2 are used to sense the pressure between the skirt panel 1 and the steps, and the amplifier 3 is used to amplify the voltage signal from the pressure sensors 2 and transmit the voltage signal to an external control system.

[0032] In implementation, based on the length of the apron board 1, at least two pressure sensors 2 are installed on the apron board 1. Each pressure sensor 2 is arranged at equal intervals to ensure that each section of the apron board 1 can effectively sense pressure. One pressure sensor 2 is connected to an amplifier 3, and another pressure sensor 2 is connected to the male terminal of a connector 5. The other pressure sensor 2 is connected to the female terminal of the connector 5, so that the two pressure sensors 2 are connected in series via connector 5, and each pair of pressure sensors 2 is connected via connector 5. This allows for voltage signal amplification by installing an amplifier 3 on each pressure sensor 2. When an object gets stuck between the apron board 1 and the escalator steps, the pressure sensor 2... The pressure from the skirt panel 1 and the steps is sensed, and a voltage signal is transmitted to the amplifier 3. The amplifier 3 transmits the amplified voltage signal to the external control system. The control system presets a voltage signal threshold. When the voltage signal transmitted by the amplifier 3 exceeds the preset threshold, the control system issues a warning signal and shuts down the escalator to prevent people from being pinched. Multiple pressure sensors 2 are connected in series through connector 5, so that only one amplifier 3 is needed to amplify the signal, avoiding the use of multiple amplifiers 3. Furthermore, multiple pressure sensors 2 cover various areas of the skirt panel 1, effectively sensing the pressure generated in each part. While maintaining the sensing effect, the cost is reduced and the structure is simplified.

[0033] In some cases, two or more pressure sensors 2 can be installed on the apron 1, and each pair of sensors is connected by a connector 5. Multiple pressure sensors 2 are arranged sequentially on the apron 1. The amplifier 3 can be connected to the first pressure sensor 2 or the last pressure sensor 2. The amplifier 3 is connected to an external control system.

[0034] In some embodiments, connector 5 is a coaxial aviation connector 5.

[0035] In practice, the male and female ends of the coaxial aviation connector 5 are connected to a pressure sensor 2 respectively, and then the male and female ends are connected to achieve series connection of the two pressure sensors 2.

[0036] In some cases, connector 5 can also be a circular electrical connector 5 or a rectangular electrical connector 5.

[0037] Typically, the pressure sensor 2 has an electrically connected wire. The wire needs to be fixed and limited. Therefore, in some embodiments, the apron 1 is provided with a limiting member, and there is a gap between the limiting member and the apron 1. The pressure sensor 2 is disposed in the gap.

[0038] During implementation, a limiting component is installed on the apron board 1, with a gap between the limiting component and the apron board 1. The wire of the pressure sensor 2 is passed through the gap between the limiting component and the apron board 1, and the wire of the pressure sensor 2 is limited through the gap.

[0039] Furthermore, the wire of pressure sensor 2 travels in a straight line within the gap between the limiting member and the skirt plate 1. The end of the wire passes through the gap and is connected to a section of the wire of the next pressure sensor 2 via connector 5. The wire of the next pressure sensor 2 continues to pass through the gap between the limiting member and the skirt plate 1. All pressure sensors 2 are limited in this way. The limiting member can be a limiting plate structure or a limiting ring structure.

[0040] In some embodiments, the limiting member is a first C-shaped plate 6.

[0041] In practice, the flat side of the first C-shaped plate 6 faces the side of the apron board 1, and the first C-shaped plate 6 is fixed on the apron board 1. A gap is left between one side of the first C-shaped plate 6 and one side of the apron board 1. The wire of the pressure sensor 2 passes through the gap between the first C-shaped plate and the apron board 1, thereby limiting the wire of the pressure sensor 2.

[0042] In some embodiments, the first C-shaped plate 6 is provided with a through hole, and the apron plate 1 is provided with a bolt, which passes through the through hole on the first C-shaped plate 6.

[0043] During implementation, a through hole is provided on the first C-shaped plate 6, and a bolt is provided on the apron plate 1. The bolt is positioned corresponding to the through hole on the first C-shaped plate 6. The bolt passes through the through hole on the first C-shaped plate 6, and then a nut is used to fix the first C-shaped plate 6.

[0044] Furthermore, the apron panel 1 is provided with multiple bolts, which are fixed to the side of the apron panel 1 by riveting. The first C-shaped plate 6 is provided with multiple through holes arranged in parallel. The first C-shaped plate 6 is fixed by passing multiple bolts through the through holes at corresponding positions, so that the first C-shaped plate 6 is more stably fixed to the side of the apron panel 1.

[0045] In some embodiments, a height-limiting washer 7 is fitted onto the bolt, and the height-limiting point is located between the first C-shaped plate 6 and the apron plate 1.

[0046] During implementation, a height limiting pad 7 is fitted onto the bolt, and then the first C-shaped plate 6 is inserted through the bolt, thereby fixing the first C-shaped plate 6 onto the apron 1. The height limiting pad 7 is used to limit the position of the first C-shaped plate 6, so that the first C-shaped plate 6 and the apron 1 maintain a predetermined distance. The predetermined distance width is the same as the wire width of the pressure sensor 2. This allows the wire of the pressure sensor 2 to be close to the upper surface of the first C-shaped plate 6, and the wire of the pressure sensor 2 to be close to the surface of the apron 1.

[0047] In some embodiments, the bottom of the first C-shaped plate 6 is provided with a height limiting rib 61.

[0048] During implementation, a height-limiting rib 61 is set at the bottom of the first C-shaped plate 6. The height-limiting rib 61 is located between the first C-shaped plate 6 and the apron plate 1. The height-limiting rib 61 further restricts the first C-shaped plate 6, so that the first C-shaped plate 6 and the apron plate 1 maintain a distance.

[0049] In some cases, a height-limiting rib 61 may also be provided on the apron board 1, which is located between the first C-shaped plate 6 and the apron board 1.

[0050] In some embodiments, the apron panel 1 has folded edges 11 on both sides.

[0051] In some embodiments, the apron board 1 is further provided with a second C-shaped board 8.

[0052] During implementation, a second C-shaped plate 8 is installed on the apron board 1, and the apron board 1 is fixed to the escalator truss through the second C-shaped plate 8.

[0053] This utility model provides an escalator, including the escalator anti-pinch device described in the above embodiments. The structure of the escalator anti-pinch device has been described in detail in the above embodiments and will not be repeated here.

[0054] The above is a detailed description of the preferred embodiments of the present utility model. However, the present utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present utility model. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. An escalator anti-pinch device, characterized in that, include: The apron board has at least two pressure sensors on the side, one of which is connected to an amplifier. The connector has male and female terminals. The male terminal mates with the female terminal; the male terminal connects to one pressure sensor, and the female terminal connects to the other pressure sensor. The apron board is provided with a limiting member, and there is a gap between the limiting member and the apron board. The pressure sensor is installed in the gap.

2. The escalator anti-pinch device according to claim 1, characterized in that, The connector is a coaxial aviation connector.

3. The escalator anti-pinch device according to claim 1, characterized in that, The limiting component is the first C-shaped plate.

4. The escalator anti-pinch device according to claim 3, characterized in that, The first C-shaped plate has a through hole, and the apron plate has a bolt that passes through the through hole in the first C-shaped plate.

5. The escalator anti-pinch device according to claim 4, characterized in that, A height-limiting washer is fitted on the bolt, with the height-limiting point located between the first C-shaped plate and the apron plate.

6. The escalator anti-pinch device according to claim 3, characterized in that, The bottom of the first C-shaped plate is provided with a height limiting rib.

7. The escalator anti-pinch device according to claim 1, characterized in that, The apron panel has folded edges on both sides.

8. The escalator anti-pinch device according to claim 1, characterized in that, The apron board also has a second C-shaped board.

9. An escalator, characterized in that, Includes the escalator anti-pinch device as described in any one of claims 1 to 8.

Images