Escalator hand strap synchronization rate tester

Abstract

The utility model relates to the technical field of escalator testing, in particular to an escalator handrail belt synchronization rate tester which comprises a handrail belt support, a step support, a handrail belt speed acquisition sensor, a step speed acquisition sensor, an overall fixing support and testing equipment used for conducting synchronous testing based on the speed of handrail belts on the two sides and the speed of steps. The two handrail belt supports are arranged above the handrail belts on the two sides respectively, and the handrail belt speed collecting sensors are fixedly arranged on the handrail belt supports. The step bracket is arranged above the escalator steps, and the step speed acquisition sensor is fixedly arranged on the step bracket; the handrail belt support and the step support are both fixed to the overall fixing support so as to keep the relative positions fixed. The general fixing support is arranged to fix the handrail belt support and the step support, so that it can be guaranteed that the relative positions of the handrail belt speed acquisition sensor and the step speed acquisition sensor are fixed in the testing process, and the condition unification and the testing accuracy in the testing process are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of escalator testing technology, specifically an escalator handrail belt synchronization rate tester. Background Technology

[0002] According to section 5.4.1.2 of GB 16899-2011 "Safety Code for the Manufacture and Installation of Escalators and Moving Walks", the nominal speed of escalators is designed to be 0.50m / s to 0.75m / s, which is relatively low. The deviation between the actual operating speed and the nominal speed is required to be no more than ±5% (i.e., the absolute deviation range of the speed is ±0.0250m / s to ±0.0375m / s). This means that the control of the operating speed is relatively strict and the deviation requirement is very small. This requires a relatively precise and stable speed testing instrument to accurately measure the speed deviation.

[0003] According to section 5.6.1 of GB 16899-2011 "Safety Code for the Manufacture and Installation of Escalators and Moving Walks," the synchronization deviation between the handrail belt speed and the escalator speed should be 0% to +2%. For example, if the escalator speed is 0.50 m / s, the handrail belt speed should be 0.500 m / s to 0.510 m / s; if the escalator speed is 0.75 m / s, the handrail belt speed should be 0.750 m / s to 0.765 m / s. This means that the control of the handrail belt speed is quite strict, and the deviation requirement is very small. This necessitates a precise and stable speed measuring instrument to accurately measure the synchronization speed deviation of the handrail belt.

[0004] According to section 5.4.2.1.3.2 of GB 16899-2011 "Safety Specification for the Manufacture and Installation of Escalators and Moving Walks", strict requirements are placed on the stopping distance of escalators. This requires a precise and stable testing instrument to accurately collect and measure the running distance (i.e., stopping distance) from the deceleration stage of the escalator to the stop.

[0005] To achieve accurate measurements, the instruments used should be fixedly supported to ensure stability and prevent movement during measurement. Otherwise, even slight movement of the instrument during the measurement process will lead to significant measurement errors, making it impossible to accurately measure the speed and speed deviation. Secondly, the operating speed of the handrails on both sides and the speed of the steps should be measured synchronously. This is because the power supply voltage and frequency may fluctuate at different times, or the escalator's operating resistance may differ, which will result in variations in the actual operating speed of the escalator at different times. Therefore, measuring at different times cannot objectively and accurately measure the synchronous speed deviation. Utility Model Content

[0006] In view of this, the purpose of this utility model is to provide an escalator handrail belt synchronization rate tester to solve the technical problems in the background art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] This utility model discloses an escalator handrail belt synchronization rate tester, which includes a handrail belt bracket, a step bracket, a handrail belt speed acquisition sensor for acquiring the speed of the handrail belts on both sides, a step speed acquisition sensor for acquiring the speed of the steps, an overall fixed bracket, and a test device for performing synchronization tests based on the speed of the handrail belts on both sides and the speed of the steps.

[0009] Two handrail supports are respectively disposed above the handrails on both sides, and the handrail speed acquisition sensor is fixedly disposed on the handrail support to acquire the speed of the handrail; the step support is disposed above the escalator step, and the step speed acquisition sensor is fixedly disposed on the step support to acquire the speed of the step; both the handrail support and the step support are fixed on the overall fixed support to maintain their relative positions.

[0010] The handrail speed sensor and the step speed sensor are both connected to the test equipment.

[0011] In one embodiment of this application, the handrail support includes a main frame with a U-shaped cross-section that is fixedly connected to the fixed support, and the main frame covers the handrail; the top of the main frame is provided with a horizontal roller, which contacts the top surface of the handrail; vertical rollers are also provided on both sides inside the main frame, which contact the sides of the handrail.

[0012] The handrail belt speed acquisition sensor is fixedly installed on the top of the main frame.

[0013] Furthermore, the stepped support includes a fixed base, a comb plate, and a sensor mounting plate that are fixedly connected to the fixed support;

[0014] The fixed base is provided with a first rotating shaft, and a first torsion spring is sleeved on the first rotating shaft. One side of the comb plate is rotatably connected through the first rotating shaft. The working arm of the first torsion spring is fixedly connected to the fixed base and the comb plate respectively. The middle part of the comb plate is provided with a second rotating shaft, and a second torsion spring is sleeved on the second rotating shaft. One side of the sensor mounting plate is rotatably connected through the second rotating shaft. The working arm of the second torsion spring is fixedly connected to the comb plate and the sensor mounting plate respectively.

[0015] The stepped velocity acquisition sensor is fixedly mounted on the sensor mounting plate.

[0016] Furthermore, the other side of the comb plate is provided with a comb tooth structure for engaging the step pedals.

[0017] Furthermore, the overall fixed support includes a transverse support and a longitudinal support, which form a T-shaped structure. The two handrails are respectively fixed at both ends of the transverse support, and the stepped support is fixed at the other end of the longitudinal support.

[0018] Furthermore, the handrail belt speed acquisition sensor includes an encoder body and a code disk connected to the encoder body. The top of the main frame is provided with a slot that matches the code disk, and the edge of the code disk contacts the top of the handrail belt through the slot.

[0019] Furthermore, the stepped speed acquisition sensor includes an encoder body and a code disk connected to the encoder body. The sensor mounting plate is provided with a slot that matches the code disk, and the edge of the code disk contacts the step pedal through the slot.

[0020] The beneficial effects of this utility model are as follows: This utility model provides an escalator handrail belt synchronization rate tester, comprising a handrail belt support, a step support, a handrail belt speed acquisition sensor for acquiring the speed of the handrail belts on both sides, a step speed acquisition sensor for acquiring the speed of the steps, an overall fixed support, and testing equipment for performing synchronization tests based on the speeds of the handrail belts on both sides and the speed of the steps. Two handrail belt supports are respectively disposed above the handrail belts on both sides, and the handrail belt speed acquisition sensors are fixedly disposed on the handrail belt supports to acquire the speed of the handrail belts. The step support is disposed above the escalator steps, and the step speed acquisition sensor is fixedly disposed on the step support to acquire the speed of the steps. Both the handrail belt support and the step support are fixed on the overall fixed support to maintain a fixed relative position. Both the handrail belt speed acquisition sensor and the step speed acquisition sensor are connected to the testing equipment. This application uses an overall fixed support to fix the handrail belt support and the step support, thereby ensuring that the relative positions of the handrail belt speed acquisition sensor and the step speed acquisition sensor are fixed during testing, ensuring uniform testing conditions and testing accuracy. Attached Figure Description

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

[0022] Figure 1 This is a schematic diagram of the structure of an escalator handrail belt synchronization rate tester shown in one embodiment of this application;

[0023] Figure 2 This is a schematic diagram of a test scenario in one embodiment of this application;

[0024] Figure 3 This is a schematic diagram of the structure of the handrail strap bracket 1 in one embodiment of this application;

[0025] Figure 4This is a schematic diagram of the structure of the stepped support 2 in one embodiment of this application;

[0026] Figure 5 This is a schematic diagram of escalator speed and handrail belt synchronization rate test data acquisition in one embodiment of this application;

[0027] Figure 6 This is a schematic diagram of escalator stopping distance test data acquisition in one embodiment of this application;

[0028] 1-Handrail with support frame, 11-Main frame, 12-Horizontal roller, 13-Vertical roller;

[0029] 2-Stepped bracket, 21-Fixed base, 22-First rotating shaft, 23-Comb plate, 24-Second rotating shaft, 25-Sensor mounting plate, 26-First torsion spring, 27-Second torsion spring;

[0030] 3-Handrail belt speed acquisition sensor;

[0031] 4-Step speed acquisition sensor;

[0032] 5-Overall fixed bracket;

[0033] 6-Testing equipment. Detailed Implementation

[0034] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0035] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the layers related to the present invention and are not drawn according to the actual number, shape and size of the layers in the actual implementation. In the actual implementation, the form, number and proportion of each layer can be arbitrarily changed, and the layer layout may also be more complex.

[0036] Numerous details are explored in the following description to provide a more thorough explanation of embodiments of the present invention; however, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without these specific details.

[0037] Figure 1 This is a schematic diagram of the structure of an escalator handrail belt synchronization rate tester shown in one embodiment of this application, as follows: Figure 1 As shown, an escalator handrail belt synchronization rate tester according to this embodiment includes a handrail belt support 1, a step support 2, a handrail belt speed acquisition sensor 3 for acquiring the speed of the handrail belts on both sides, a step speed acquisition sensor 4 for acquiring the speed of the steps, an overall fixed support 5, and a test device 6 for performing synchronization tests based on the speed of the handrail belts on both sides and the speed of the steps.

[0038] Two handrail support brackets 1 are respectively installed above the handrails on both sides. The handrail speed acquisition sensor 3 is fixedly installed on the handrail support bracket 1 to acquire the speed of the handrails. The step bracket 2 is installed above the escalator steps. The step speed acquisition sensor 4 is fixedly installed on the step bracket 2 to acquire the speed of the steps. The handrail support bracket 1 and the step bracket 2 are both fixed on the overall fixed bracket 5 to maintain their relative positions. The handrail speed acquisition sensor 3 and the step speed acquisition sensor 4 are both connected to the test equipment 6.

[0039] The overall fixing bracket 5 serves to ensure the fixed positions of the handrail support bracket 1 and the step support bracket 2, thereby further ensuring the fixed positions of the handrail speed acquisition sensor 3 and the step speed acquisition sensor 4. When using the testing instrument in this application, it is not necessary to use time-segmented measurements. The test can be performed directly after the overall installation, using the handrail speed and step speed under the same time period, and then sending them into the testing equipment 6 to generate speed curves and intuitively display the test results.

[0040] Figure 2 This is a schematic diagram of a test scenario in one embodiment of this application, such as... Figure 2 As shown, during the test, the left and right handrail support brackets 1 are installed on the handrail, the step brackets 2 are set on the escalator steps, and the sensors are connected to the test equipment 6 to perform synchronization rate and braking tests.

[0041] The overall fixed support 5 includes horizontal and vertical support rods forming a T-shape. Two handrails are fixed to both ends of the horizontal support rods, and the stepped support 2 is fixed to the other end of the vertical support rod. The overall fixed support 5 is secured by hand or by installing other ground-mounted supports. There are many types of ground-mounted supports, which will not be described in detail here.

[0042] Figure 3 This is a schematic diagram of the structure of the handrail support 1 in one embodiment of this application, as shown below. Figure 3As shown, the handrail support 1 includes a main frame 11 with a U-shaped cross-section, which is fixedly connected to a fixed bracket and covers the handrail. The top of the main frame 11 is provided with a horizontal roller 12, which contacts the top surface of the handrail. The two sides inside the main frame 11 are also provided with vertical rollers 13, which contact the two sides of the handrail. The handrail speed acquisition sensor 3 is fixedly installed on the top of the main frame 11.

[0043] During installation, the main frame 11 is placed over the escalator handrail, with the horizontal rollers 12 contacting the top surface of the handrail. The vertical rollers 13 prevent the main frame 11 from directly contacting the handrail and hindering its movement, thus avoiding inaccurate test results. Furthermore, the handrail speed sensor 3 includes an encoder body and a code disk connected to it. The top of the main frame 11 has a slot matching the code disk, and the edge of the code disk contacts the top of the handrail through the slot. When the handrail moves, it drives the code disk to rotate. The encoder body converts the rotation of the code disk into linear motion, thereby performing speed testing.

[0044] Figure 4 This is a schematic diagram of the structure of the stepped support 2 in one embodiment of this application, as shown below. Figure 4 As shown, the stepped support 2 includes a fixed base 21, a comb plate 23, and a sensor mounting plate 25, all fixedly connected to a fixed support. A first rotating shaft 22 is mounted on the fixed base 21, and a first torsion spring 26 is sleeved on the first rotating shaft 22. One side of the comb plate 23 is rotatably connected via the first rotating shaft 22, and the working arms of the first torsion spring 26 are fixedly connected to the fixed base 21 and the comb plate 23, respectively. A second rotating shaft 24 is located in the middle of the comb plate 23, and a second torsion spring 27 is sleeved on the second rotating shaft 24. One side of the sensor mounting plate 25 is rotatably connected via the second rotating shaft 24, and the working arms of the second torsion spring 27 are fixedly connected to the comb plate 23 and the sensor mounting plate 25, respectively. The stepped speed acquisition sensor 4 is fixedly mounted on the sensor mounting plate 25. The other side of the comb plate 23 has a comb tooth structure for engaging the stepped pedals. The stepped speed acquisition sensor 4 includes an encoder body and a code disk connected to the encoder body. The sensor mounting plate 25 has a slot that matches the code disk, and the edge of the code disk contacts the stepped pedal through the slot.

[0045] The rebound force of the first torsion spring 26 and the second torsion spring 27 can ensure that the comb structure at the bottom of the comb plate 23 and the code disk and the step pedal are in full contact. Since the step pedal is made of metal and has a low coefficient of friction, the static friction is increased by increasing the downward pressure to avoid relative sliding between the code disk and the step pedal, thereby improving the test accuracy.

[0046] The meshing of the comb-like structure with the stepped pedals ensures that the testing instrument will not undergo lateral displacement as a whole, thus achieving a limiting function.

[0047] The code disk of the stepped speed acquisition sensor 4 rotates with the movement of the steps, and the encoder body converts the rotation amount into horizontal displacement amount, thereby performing speed testing.

[0048] The process and principle of performing synchronization and braking tests using this application are as follows:

[0049] 1. The support frame of the test instrument's data acquisition device can stably support the left and right handrail speed acquisition sensors and step speed acquisition sensors on the handrail and steps.

[0050] 2. All sensor data cables of the tester's data acquisition device are connected to the test equipment, and the test equipment can receive data collected by each sensor in real time.

[0051] 3. Data processing and result judgment of handrail belt synchronization rate test

[0052] The nominal speed of the escalator is: V0

[0053] The speed of each step is: V1 (data collected by the sensor).

[0054] The speed of the left handrail belt is: V2 (data collected by the sensor).

[0055] The speed of the right handrail belt is V3 (data collected by the sensor).

[0056] When 0.95V0≤V1≤1.05V0, the escalator's operating speed meets the requirements.

[0057] When V1≤V2≤1.02V1 and V1≤V3≤1.02V1, the operating speed of the handrail belt meets the requirements.

[0058] 4. Data processing and result judgment of escalator stopping distance test

[0059] The nominal speed of the escalator is: V0

[0060] The speed of each step is: V1 (data collected by the sensor).

[0061] The instant when deceleration begins is: t1 (data collected by the sensor).

[0062] The instantaneous time at which the speed drops to zero is: t2 (data collected by the sensor).

[0063] Calculate the stopping distance using the following formula:

[0064]

[0065] Result judgment

[0066] When V0 = 0.50 m / s and 0.20 m ≤ L < 1.00 m, the braking distance is deemed to meet the requirements.

[0067] When V0 = 0.65 m / s and 0.30 m ≤ L < 1.30 m, the braking distance is deemed to meet the requirements.

[0068] When V0 = 0.50 m / s and 0.40 m ≤ L < 1.50 m, the braking distance is deemed to meet the requirements.

[0069] Figure 5 This is a schematic diagram illustrating the data acquisition for escalator speed and handrail belt synchronization rate testing in one embodiment of this application, as shown below. Figure 5 As shown, the tester's interface displays a speed curve to observe whether real-time data acquisition is normal. Press the "Test" button to start acquiring test data. After a few seconds, press the "Test" button again to stop acquiring test data, and then press the "Save" button to save the test data. The tester software calculates the average speed of the test period as test data for V1, V2, and V3. Then, perform a compliance check based on the above information.

[0070] Figure 6 This is a schematic diagram of escalator stopping distance test data acquisition in one embodiment of this application, as shown below. Figure 6 As shown, the tester's interface displays a speed / displacement curve to observe whether the real-time data acquisition is normal. Press the "Test" button to start acquiring test data and refreshing the curve. After 2-3 seconds, a stop signal for the escalator is issued. After the escalator has completely stopped for 2-3 seconds, press the "Test" button again to stop acquiring test data and solidify the curve. Then press the "Save" button to save the test data. The tester software obtains the escalator displacement S1 at time t1 when the escalator begins to decelerate and the escalator displacement S2 at time t2 when the escalator completely stops from the curve graph, and calculates the escalator's stopping distance L = S2 - S1. Then, perform a compliance judgment according to Section 5.6 of Chapter 3 above.

[0071] The features of the escalator stopping distance and handrail belt synchronization rate tester are as follows:

[0072] 1. The instrument is fixed and tests synchronously, which is not affected by the stability of manual operation and fluctuations in running speed, and the measurement data has high reliability.

[0073] 2. Existing synchronization testers are handheld, and hand tremors can introduce significant measurement errors. Furthermore, these testers measure three speeds separately (first the step speed, then the left handrail belt speed, and finally the right handrail belt speed). At different measurement times, fluctuations in power supply and slight changes in running resistance can cause fluctuations in the actual operating speed. This indicator requires very high measurement accuracy (the nominal escalator speed is 0.5 m / s, the actual escalator speed deviation is ±0.025 m / s, and the handrail belt speed is 0.000 m / s to 0.010 m / s), and large measurement errors are unacceptable. Therefore, existing synchronization testers cannot meet these accuracy requirements. This application solves the above problems.

[0074] 3. It has multiple functions and can perform multi-parameter measurements such as braking distance, escalator running speed, and handrail belt synchronization rate.

[0075] 4. The instrument is easy to set up and fix, and simple to operate. It can complete the measurement of three technical indicators—escalator braking distance, escalator running speed, and handrail belt synchronization rate—in one setup, resulting in high testing efficiency.

[0076] In the above embodiments, although the present invention has been described in conjunction with specific embodiments thereof, many substitutions, modifications, and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. The embodiments of the present invention are intended to cover all such substitutions, modifications, and variations falling within the broad scope of the appended claims.

[0077] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An escalator handrail belt synchronization rate tester, characterized in that, It includes a handrail support (1), a step support (2), a handrail speed acquisition sensor (3) for acquiring the speed of the handrails on both sides, a step speed acquisition sensor (4) for acquiring the speed of the steps, an overall fixed support (5), and a test device (6) for synchronous testing based on the speed of the handrails on both sides and the speed of the steps. Two handrail supports (1) are respectively set above the handrails on both sides, and the handrail speed acquisition sensor (3) is fixedly set on the handrail support (1) to acquire the speed of the handrail; the step support (2) is set above the escalator step, and the step speed acquisition sensor (4) is fixedly set on the step support (2) to acquire the speed of the step; the handrail support (1) and the step support (2) are both fixed on the overall fixed support (5) to maintain their relative positions. The handrail speed acquisition sensor (3) and the step speed acquisition sensor (4) are both connected to the test equipment (6).

2. The escalator handrail synchronization rate tester according to claim 1, characterized in that, The handrail support (1) includes a main frame (11) with a U-shaped cross section, which is fixedly connected to the fixed support. The main frame (11) covers the handrail. The top of the main frame (11) is provided with a horizontal roller (12), which contacts the top surface of the handrail. The two sides inside the main frame (11) are also provided with vertical rollers (13), which contact the two sides of the handrail. The handrail belt speed acquisition sensor (3) is fixedly installed on the top of the main frame (11).

3. The escalator handrail synchronization rate tester according to claim 1, characterized in that, The stepped support (2) includes a fixed base (21), a comb plate (23), and a sensor mounting plate (25) that are fixedly connected to the fixed support; The fixed base (21) is provided with a first rotating shaft (22), and a first torsion spring (26) is sleeved on the first rotating shaft (22). One side of the comb plate (23) is rotatably connected through the first rotating shaft (22). The working arm of the first torsion spring (26) is fixedly connected to the fixed base (21) and the comb plate (23) respectively. The middle part of the comb plate (23) is provided with a second rotating shaft (24), and a second torsion spring (27) is sleeved on the second rotating shaft (24). One side of the sensor mounting plate (25) is rotatably connected through the second rotating shaft (24). The working arm of the second torsion spring (27) is fixedly connected to the comb plate (23) and the sensor mounting plate (25) respectively. The stepped speed acquisition sensor (4) is fixedly installed on the sensor mounting plate (25).

4. The escalator handrail belt synchronization rate tester according to claim 3, characterized in that, The other side of the comb plate (23) is provided with a comb structure for engaging the step pedals.

5. The escalator handrail synchronization rate tester according to claim 1, characterized in that, The overall fixed support (5) includes a horizontal support rod and a longitudinal support rod, which form a T-shaped structure. The two handrails are respectively fixed at both ends of the horizontal support rod, and the stepped support (2) is fixed at the other end of the longitudinal support rod.

6. The escalator handrail synchronization rate tester according to claim 2, characterized in that, The handrail speed acquisition sensor (3) includes an encoder body and a code disk connected to the encoder body. The top of the main frame (11) is provided with a slot that matches the code disk, and the edge of the code disk contacts the top of the handrail through the slot.

7. The escalator handrail belt synchronization rate tester according to claim 3, characterized in that, The stepped speed acquisition sensor (4) includes an encoder body and a code disk connected to the encoder body. The sensor mounting plate (25) is provided with a slot that matches the code disk. The edge of the code disk contacts the step pedal through the slot.

Images