Portable detection device for detecting speed difference between handrails and stairs of escalator

Abstract

The utility model discloses a portable detection device for detecting the speed difference between a handrail and stairs of an escalator, which comprises a shell, a volute spiral spring is arranged in the shell, one end of the volute spiral spring is fixed in the shell, the other end of the volute spiral spring is connected with a line concentration winding drum, the line concentration winding drum can rotate around the axis of the line concentration winding drum, and the other end of the line concentration winding drum is connected with the shell. A speed measuring belt is wound on the line concentration winding drum, one end of the speed measuring belt is arranged outside the shell and connected with a fixing piece, and a speed measuring device used for measuring the speed of the speed measuring belt is further arranged in the shell. The device is small and exquisite in structure and convenient to carry, and meanwhile, the speed difference between the handrail and the steps can be accurately measured.

Description

Technical Field

[0001] This utility model relates to the field of detector technology, specifically a portable detection device for the speed difference between the handrail and steps of an escalator. Background Technology

[0002] According to relevant industry standards, the speed of the handrail on an escalator must be greater than the speed of the steps, and the speed difference between the two must be controlled within a certain range to reduce the occurrence of passenger falls on escalators. Currently, most escalator speed measurement devices use wheel-type speed measuring devices. However, their disadvantages include the tendency for wheel-type devices to slip, leading to distorted measurement data; furthermore, these devices are bulky and can only be used for maintenance, making them difficult to use in daily operations. Utility Model Content

[0003] To solve at least one of the above-mentioned problems, this utility model proposes a portable detection device for the speed difference between the handrail and the steps of an escalator.

[0004] The technical solution of this utility model is as follows: a portable detection device for the speed difference between the handrail and the steps of an escalator, comprising a housing, a spiral spring provided inside the housing, one end of the spiral spring being fixed inside the housing, and the other end being connected to a cable reel, the cable reel being rotatable around its axis, a speed measuring belt being wound on the cable reel, one end of the speed measuring belt being located outside the housing and connected to a fixing member, and a speed measuring device for measuring the speed of the speed measuring belt being provided inside the housing.

[0005] One embodiment of this utility model is that a fixed pulley assembly for stabilizing the tension of the speed measuring belt is further provided inside the housing, and the fixed pulley assembly is located between the speed measuring device and the cable reel.

[0006] One embodiment of this utility model is that the speed measuring belt is a synchronous belt, the speed measuring device is a speed measuring wheel that matches the synchronous belt, and the speed measuring wheel is provided with an encoder disk.

[0007] One embodiment of this utility model is that the speed measuring strip is an coded color strip, and a speed measuring camera is provided above the speed measuring strip.

[0008] One embodiment of this utility model is that a rotating bearing is provided inside the housing, and one end of the wire winding drum is disposed on the rotating bearing.

[0009] One embodiment of this utility model is that the device further includes a power supply, a microcontroller, and a human-computer interaction interface.

[0010] Beneficial effects: The device of this utility model has a small structure, is easy to carry, and can measure the speed difference between the handrail and the steps relatively accurately. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the device in Example 1;

[0012] Figure 2 This is a schematic diagram of the internal structure of the device in Example 1;

[0013] Figure 3 This is a schematic diagram of the back structure of the device in Example 1;

[0014] Figure 4 This is a schematic diagram of the internal structure of the device in Example 1 after the cable reel, spiral spring, and timing belt have been removed.

[0015] Figure 5 This is a schematic diagram of the internal structure of the device in Example 2.

[0016] In the diagram, 1 is the handrail, 2 is the fixing component, 3 is the housing, 4 is the cable reel, 5 is the spiral spring, 6 is the coded color strip, 7 is the fixed pulley assembly, 8 is the camera, 9 is the speed measuring wheel, 10 is the synchronous belt, 11 is the encoder disk, 12 is the microcontroller, 13 is the human-computer interaction interface, 14 is the rotating bearing, and 15 is the mounting column. Detailed Implementation

[0017] The specific embodiments of this utility model will be clearly and completely described below with reference to examples and accompanying drawings. Obviously, the described examples are only some embodiments of this utility model, and not all embodiments.

[0018] Example 1: As Figure 1-4 As shown, a portable detection device for the speed difference between the handrail 1 and the steps of an escalator includes a housing 3. A spiral spring 5 is provided inside the housing 3. One end of the spiral spring 5 is fixed inside the housing 3, and the other end is connected to a cable reel 4. The cable reel 4 can rotate around its axis. A speed measuring belt is wound on the cable reel 4. One end of the speed measuring belt is located outside the housing 3 and is connected to a fixing member 2. A speed measuring device for measuring the synchronous speed of the speed measuring belt is also provided inside the housing 3.

[0019] Specifically, in this embodiment, the spiral spring 5 used is a conventional planar spiral spring in the art, with one end located on the inner side and the other end on the outer side. The inner end of the spiral spring 5 is usually fixed to allow it to store energy, while the outer end is usually connected to other components. In this embodiment, the inner end of the spiral spring 5 is fixed inside the housing 3, and the outer end is connected to the cable reel 4. Since the cable reel 4 can rotate around its axis, when the cable reel 4 is subjected to an external force, the spiral spring 5 stores energy; when the external force on the cable reel 4 disappears, the spiral spring 5 releases energy, thereby causing the cable reel 4 to return to its original position.

[0020] The cable reel 4, speed measuring belt, and speed measuring device are the core components of the device in this embodiment.

[0021] The cable reel 4 stores the speed measuring tape. With the assistance of the spiral spring 5, the cable reel 5 also keeps the speed measuring tape stretched during the test, resulting in more accurate test results. After the test, the cable reel 4 and spiral spring 5 can retract the external speed measuring tape. For the cable reel 5 to have these functions, it requires not only the cooperation of the spiral spring 4 but also the ability to rotate around its axis. There are many structures that allow the cable reel 4 to rotate around its axis, such as a corresponding rotating shaft. Considering the cooperation between the cable reel 4 and the spiral spring 5 in this embodiment, and to make the installation of the cable reel 4 more convenient, this embodiment uses... Figure 4 As shown, a rotating bearing 14 and a mounting post 15 are provided inside the housing 3. The inner ring of the rotating bearing 14 is fixedly mounted on the mounting post 15, and the outer ring is connected to the cable reel 4, so that the cable reel 4 can rotate freely. At the same time, the mounting post 15 can also serve as a fixing point for the spiral spring 5 located at one end of the inner side.

[0022] For both the speed measuring belt and the speed measuring device, the only requirement is that they can perform the corresponding speed measurement. Specifically, for the speed measuring belt, one end of it, located outside the housing, is connected to a fixing member 2. This fixing member 2 can be fixed to the handrail 1 and also needs to be easily disassembled. For example, a common suction cup can be used as the fixing member 2, which is convenient for installation and disassembly. Simultaneously, when the speed measuring belt is pulled out by the cable reel 4, it may partially curl. To avoid this, in this embodiment, a fixed pulley assembly 7 for stabilizing the stretching of the speed measuring belt is also provided. This fixed pulley assembly 7 includes two fixed pulleys, which are respectively located at the upper and lower parts of the speed measuring belt and clamp the speed measuring belt between the two fixed pulleys, enabling the speed measuring belt to be flattened for speed measurement by the speed measuring device. Similar fixed pulley assemblies 7 are conventional components in the art, so their specific details will not be elaborated. In fact, multiple sets of fixed pulley assemblies 7 can be provided; for example, a set of fixed pulley assemblies 7 can also be provided at the exit of the speed measuring belt to facilitate the stretching of the speed measuring belt.

[0023] There are many speed measuring belts and speed measuring devices that meet the above requirements. This embodiment proposes the following combination of speed measuring belt and speed measuring device. However, those skilled in the art should know that the combination proposed in this embodiment is not a limitation of this utility model. Those skilled in the art can use other speed measuring belts and speed measuring devices with similar functions.

[0024] like Figure 2-3 As shown, in this embodiment, the speed measuring belt is set as a synchronous belt 10, and the speed measuring device is a speed measuring wheel 9 that matches the synchronous belt. The speed measuring wheel 9 is equipped with an encoder disk 11. The synchronous belt 10 has corresponding teeth, and the speed measuring wheel 9 has teeth that match the synchronous belt. Under these circumstances, the test results of the speed measuring wheel 9 are more accurate. In order to obtain the real-time speed difference, an encoder disk 11 is also provided.

[0025] To achieve intelligent speed difference detection, this embodiment also includes a power supply 14, a microcontroller 12, and a human-machine interface 13. The power supply 14 can be a battery, which is simple and portable. The microcontroller 12 converts the speed measured by the speed measuring device into a digital signal that can be displayed on the human-machine interface 13; conventional microcontrollers 12 and human-machine interfaces 13 can be selected from those used in the field.

[0026] In use, the fixing piece 2 on the speed measuring belt is fixed to the handrail 1. The user stands on the step and holds the housing 3 still. When there is a speed difference between the handrail 1 and the step, the speed measuring belt is pulled out from the housing 3. At the same time, the speed measuring device measures the speed of the speed measuring belt, thus determining the speed difference between the handrail 1 and the step. After the measurement is completed, the fixing piece 2 is removed, and the speed measuring belt is retracted into the cable reel 4 under the action of the spiral spring 5.

[0027] Example 2: In other cases, such as Figure 1 , Figure 5 As shown, the difference between this embodiment and Embodiment 1 is that the speed measuring device is set as a camera 8, and the speed measuring strip is set as an coded color strip 6. The camera 8 is set above the coded color strip 6, and no encoding disk is set. Multiple stripes of different colors are arranged at intervals on the coded color strip 6. The camera 8 can determine the final elongation of the speed measuring strip, thereby calculating the speed difference.

[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A portable detection device for the speed difference between the handrail and steps of an escalator, characterized in that, The device includes a housing, inside which is a spiral spring. One end of the spiral spring is fixed inside the housing, and the other end is connected to a cable reel. The cable reel can rotate around its axis. A speed measuring belt is wound on the cable reel. One end of the speed measuring belt is located outside the housing and is connected to a fixing member. The housing also contains a speed measuring device for measuring the speed of the speed measuring belt.

2. The apparatus according to claim 1, characterized in that, The housing is also provided with a fixed pulley assembly for stabilizing the tension of the speed measuring belt, and the fixed pulley assembly is located between the speed measuring device and the cable reel.

3. The apparatus according to claim 1 or 2, characterized in that, The speed measuring belt is a synchronous belt, and the speed measuring device is a speed measuring wheel that matches the synchronous belt. The speed measuring wheel is equipped with an encoder disk.

4. The apparatus according to claim 1 or 2, characterized in that, The speed measuring strip is a coded color strip, and a speed measuring camera is installed above the speed measuring strip.

5. The apparatus according to claim 1, characterized in that, The housing is equipped with a rotating bearing, and one end of the cable reel is mounted on the rotating bearing.

6. The apparatus according to claim 1, characterized in that, The device also includes a power supply, a microcontroller, and a human-machine interface.

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