Brake system for conveyor system, method for detecting brake for conveyor system, and controller

Abstract

The present application provides a brake system for a delivery system, the brake system comprising: a brake comprising a brake arm and a brake lining connected to the brake arm; the distance detection device is arranged on the brake and used for detecting a first distance and a second distance between the brake arm and a brake drum, the first distance is the distance between the brake arm and the brake drum when the brake is in an on state, and the second distance is the distance between the brake arm and the brake drum when the brake is in an off state; the second distance is the distance between the brake arm and the brake drum when the brake is in a closed state; and the controller is used for judging the braking performance of the brake according to the difference value of the first distance and the second distance which are detected in sequence, and is used for generating and sending a warning signal under the condition that the difference value is out of a preset range. The invention further provides a detection method and a controller for the brake of the conveying system.

Description

Technical Field

[0001] The present application relates to a conveying system, and more particularly, to a technology related to braking of a conveying system. Background Art

[0002] Escalators, moving walkways and other transportation systems have been widely used in various buildings, such as airports, shopping malls, etc., providing convenience for people's travel. In order to prevent problems such as overspeeding and reversal of escalators, escalators are generally equipped with brakes. The brake brakes the escalator through the friction between the brake lining and the brake drum. As the escalator is used, the brake will produce multiple braking, which may cause the brake lining to wear or damage. However, at present, it is generally manual to check the status of the brake lining regularly and replace the brake lining as needed, which makes it impossible to obtain the working status of the escalator brake in real time. For escalators with high safety requirements, there is room for improvement in brake status detection. Summary of the invention

[0003] The present invention provides a braking system for a conveying system to improve at least one of the above aspects.

[0004] According to the example of the present application, the braking system for the conveying system may include: a brake, which includes a brake arm and a brake lining connected to the brake arm; a distance detection device, which is arranged on the brake and is used to detect a first distance and a second distance between the brake arm and the brake drum, the first distance is the distance between the brake arm and the brake drum when the brake is in an open state, and the second distance is the distance between the brake arm and the brake drum when the brake is in a closed state; a controller, which is used to judge the braking performance of the brake according to the difference between the first distance and the second distance detected successively, and is used to generate and send a warning signal when the difference is outside a preset range.

[0005] In the braking system, optionally or additionally, the distance detection device may be arranged on the brake in a manner capable of sensing the distance between the set position of the brake arm and the brake drum, wherein the first distance and the second distance are the distances between the set position and the brake drum in the open state and the closed state, respectively.

[0006] In the braking system, optionally or additionally, the distance detection device may be arranged in the brake arm, and the set position is the connection surface between the brake arm and the brake lining.

[0007] In the braking system, optionally or additionally, the distance detection device may be arranged inside the brake arm near the set position.

[0008] In the braking system, optionally or additionally, the controller is connected to the output unit and / or the remote monitoring room, that is, the controller can be connected to the output unit, or the controller can be connected to the remote monitoring room, or the controller can be connected to the data unit and connected to the remote monitoring room. The connection here includes any one of a line connection and a communication connection or a combination thereof.

[0009] According to another aspect of the present application, a detection method for a brake of a conveying system is also provided, and the method may include: detecting a first distance and a second distance between a brake arm and a brake drum of the brake, the first distance being the distance between the brake arm and the brake drum when the brake is in an open state, and the second distance being the distance between the brake arm and the brake drum when the brake is in a closed state; comparing the difference between the first distance and the second distance with a preset range to determine the braking performance of the brake; and generating and sending a warning signal when the comparison result is that the difference is outside the preset range.

[0010] The detection method for the brake for the conveying system may, optionally or additionally, include detecting the first distance and the second distance between the brake arm and the brake drum of the brake, and may include: when the brake is in an open state, a distance detector provided on the brake arm detects the distance between the set position of the brake arm and the brake drum as the first distance; when the brake is in a closed state, the distance detector detects the distance between the set position of the brake arm and the brake drum as the second distance.

[0011] In the detection method for the brake of a conveying system, optionally or additionally, the set position is perpendicular to the joining surface of the brake lining and the brake drum when the brake lining is joined to the brake drum.

[0012] In the detection method for the brake of the conveying system, optionally or additionally, the distance detection device is arranged at the set position and the set position is close to the surface of the brake arm for connecting the brake lining.

[0013] A controller is also provided, which may include a memory and a processor, the memory storing instructions, the processor being used to execute the instructions, and when executing the instructions, causing the escalator braking system to: detect a first distance and a second distance between a brake arm and a brake drum of the brake, the first distance being the distance between the brake arm and the brake drum when the brake is in an open state, and the second distance being the distance between the brake arm and the brake drum when the brake is in a closed state; compare the difference between the first distance and the second distance with a preset range to determine the braking performance of the brake; and generate and send a warning signal when the comparison result is that the difference is outside the preset range.

[0014] A delivery system is also provided, which comprises any one of the braking systems described above, or is capable of executing any one of the methods described above, or comprises the controller described above.

[0015] In the above examples, as an example, the distance detection device may be a distance sensor.

[0016] In the above examples, as examples, the transport system includes a conveying system such as an escalator, a moving walkway, etc. for transporting passengers and / or objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following will describe the embodiments of the present application in detail with reference to the accompanying drawings so that the present application can be more fully understood, wherein:

[0018] Figure 1 is a schematic illustration of an escalator 10;

[0019] Figure 2 is a schematic diagram of the structure of an escalator braking system according to some examples of the present application;

[0020] Figure 3A It is a schematic diagram of the structure when the brake is in a closed state;

[0021] Figure 3B It is a schematic diagram of the structure when the brake is in the open state;

[0022] Figure 4 is a flow chart of a detection method for an escalator braking system according to an example of the present application;

[0023] Figure 5 It is a schematic diagram of the structure of the controller according to some examples of the present application. DETAILED DESCRIPTION

[0024] In order to help those skilled in the art to accurately understand the subject matter for which protection is sought in the present application, the specific implementation of the present application will be described in detail below in conjunction with the accompanying drawings.

[0025] The terms "first", "second", etc. in the specification, claims and drawings of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the invention described herein can be implemented in an order other than those illustrated or described herein. In addition, "first" and "second" are used for descriptive purposes only and are not to be understood as expressly or implicitly indicating relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features, and in the description of the embodiments of the present application, unless otherwise stated, "multiple" means two or more.

[0026] As used hereinafter, the words “example” or “exemplarily” or “exemplarily” mean “serving as an example, embodiment, or illustration.” Any embodiment described as “example” or “exemplarily” or “exemplarily” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0027] The conveying system described in the present application may include a conveying system for conveying passengers and / or articles, such as an escalator and a travelator. Although the following embodiments of the present application are all described using an escalator as an example of a conveying system, it should be understood that the examples of the brake system for the conveying system, the detection method for the brake of the conveying system, the controller, etc. provided in the present application are also applicable to other conveying systems including a brake function, such as a travelator.

[0028] Figure 1 An escalator 10 is illustrated. In the ensuing description, it should become apparent that the present invention is applicable to other passenger conveyor systems, such as moving walkways. The escalator 10 generally includes a truss 12 extending between a lower landing 14 and an upper landing 16. A plurality of sequentially connected steps or pallets 18 are connected to a step chain 20 and travel through a closed loop path within the truss 12. Pairs of handrails 22 include moving handrails 24. A drive machine 26 or drive system is typically positioned in a machine space 28 below the upper landing 16; however, an additional machine space 28' may be positioned below the lower landing 14. The drive machine 26 is configured to drive the pallets 18 and / or handrails 24 via the step chain 20. The drive machine 26 operates to move the pallets 18 in a selected direction at a desired speed under normal operating conditions.

[0029] The pallet 18 makes a 180 degree change of forward direction in a turning area 19 located below the lower landing 14 and the upper landing 16. The pallet 18 is pivotally attached to the step chain 20 and follows the closed loop path of the step chain 20, running from one landing to another and back again.

[0030] The drive machine 26 includes a first drive component 32, such as a motor output sheave, connected to a drive motor 34 via a belt reduction assembly 36, which includes a second drive component 38, such as an output sheave, driven by a tensioning component 39, such as an output belt. In some embodiments, the first drive component 32 is a driving component and the second drive component 38 is a driven component.

[0031] As used herein, in various embodiments, the first drive member 32 and / or the second drive member 38 can be any type of rotating device, such as a rope, pulley, gear, wheel, sprocket, cog, pinion, etc. In various embodiments, the tension member 39 can be configured as a chain, belt, cable, belt, band, strip, or any other similar device that operatively connects two elements to provide a driving force from one element to another. For example, the tension member 39 can be any type of interconnecting member that extends between the first drive member 32 and the second drive member 38 and operatively connects the first drive member 32 and the second drive member 38. In some embodiments, as Figure 1 As shown in FIG. 1 , the first drive member 32 and the second drive member 38 may provide belt reduction. For example, the diameter of the first drive member 32 may be approximately 75 mm (2.95 inches), while the diameter of the second drive member 38 may be approximately 750 mm (29.53 inches). For example, the belt reduction allows the sheaves to be replaced to change the speed for 50 or 60 Hz mains power applications or different step speeds. However, in other embodiments, the second drive member 38 may be substantially similar to the first drive member 32.

[0032] As noted, the first drive member 32 is driven by the drive motor 34 and is thus configured to drive the tensioning member 39 and the second drive member 38. In some embodiments, the second drive member 38 may be an idler gear or similar device that is driven by the tensioning member 39 through the operative connection between the first drive member 32 and the second drive member 38. The tensioning member 39 travels around a loop set by the first drive member 32 and the second drive member 38, which may be referred to as a small loop hereinafter. The small loop is provided for driving a larger loop, which is composed of the step chain 20 and is driven by, for example, the output sheave 40. Under normal operating conditions, based on the movement speed of the first drive member 32 as driven by the drive motor 34, the tensioning member 39 and the step chain 20 move in unison.

[0033] The escalator 10 also includes a controller 115 in electronic communication with the drive motor 34. As shown, the controller 115 can be positioned in the machine space 28 of the escalator 10 and is configured to control the operation of the escalator 10. For example, the controller 115 can provide a drive signal to the drive motor 34 to control the acceleration, deceleration, stop, etc. of the pedal 18 through the step chain 20. The controller 115 can be an electronic controller including a processor and an associated memory, the memory including computer executable instructions, which, when executed by the processor, cause the processor to perform a variety of operations. The processor can be, but is not limited to, a single processor or multi-processor system of any architecture in a variety of possible architectures, including field programmable gate arrays (FPGAs), central processing units (CPUs), application specific integrated circuits (ASICs), digital signal processors (DSPs), or graphics processing units (GPUs) hardware arranged in a homogeneous or heterogeneous manner. The memory can be, but is not limited to, random access memory (RAM), read-only memory (ROM), or other electronic, optical, magnetic, or any other computer-readable medium.

[0034] Figure 2 The figure is a schematic diagram of the structure of the escalator braking system according to some examples of the present application. The figure illustrates the relationship between the various components of the braking system according to the examples of the present application in the form of a block diagram, and does not limit the shape, size, structure and mechanical connection relationship between the various components of the braking system. Figure 2 As shown, the escalator braking system includes a brake 6, a distance detection device 62, and a controller 64.

[0035] The brake 6 includes a brake lining 61 and a brake arm 63, and the brake arm 63 is connected to the brake lining 61. Under the action of the driving force, the brake arm 63 drives the brake lining 61 to move. When the brake 6 is in a closed state, the braking surface 610 of the brake lining 61 is combined with the brake drum 100, and the brake drum 100 is braked by the friction between the two. When the brake 6 is switched from the closed state to the open state, the brake lining 61 is driven by the brake arm 63 to leave the brake drum 100, and the brake on the brake drum 100 is released.

[0036] The distance detection device 62 is arranged on the brake 6 and is configured to detect a first distance and a second distance, wherein the first distance is the distance between the brake arm 63 and the brake drum 100 when the brake 6 is in an open state, and the second distance is the distance between the brake arm 63 and the brake drum 100 when the brake 6 is in a closed state.

[0037] The controller 64 determines the braking performance of the brake 6 according to the difference between the first distance and the second distance. Specifically, as the brake lining 61 is used, its wear degree increases and its thickness decreases, so when the braking surface 610 of the brake lining 61 is coupled to the brake drum 100, the second distance detected by the distance detection device 62 will decrease. When the first distance remains unchanged, the gap C between the brake drum 100 and the braking surface 610 of the brake lining 61 determined by the difference between the first distance and the second distance will increase.

[0038] For the brake of the escalator, the size of the gap C should be within a preset range to ensure that when the electromagnet is powered off, the brake arm 63 completely drops down so that the brake 6 is completely closed in the closed state; when the electromagnet is powered on, the brake arm 63 is completely opened so that the brake 6 is completely opened in the open state. If the gap C is outside the preset range, when the electromagnet is powered off, the brake arm may not be able to completely close the brake due to the drop, and the braking effect may be reduced; when the electromagnet is powered on, the brake arm cannot be fully opened, and the brake lining will always rub against the brake drum during the operation of the escalator, which may cause safety accidents.

[0039] According to the example of the present application, when the calculated difference is outside the preset range, the controller 64 generates and sends a warning signal so that the brake performance degradation or other possible abnormalities can be known. In some examples, the controller 64 is connected to the output unit 66 and / or the remote monitoring room 67. Thus, the warning signal sent will be output by the output unit 66 and / or received by the remote monitoring room 67. The output unit 66 can be output in an audible manner, in a visible manner, or in a combination thereof. It should be understood that the controller 64 can be connected to the output unit 66 by line or wireless communication, and the output unit can be an output component of the escalator according to the example of the present application. The controller 64 can be connected to the remote monitoring room by wireless communication, or it may also be connected to the remote monitoring room by line.

[0040] Figure 3A and Figure 3B The structure of the brake 6 is shown schematically, wherein: Figure 3A It is a schematic diagram of the structure when the brake is in the closed state. Figure 3B The specific structure of the brake 6 may be more complicated, and only its general structure and the parts of all its components related to the present application are illustrated here. Figure 3A and Figure 3B It is not intended to limit the brakes in the examples of this application to be completely consistent with the structure, size, and dimensions shown in the figures.

[0041] refer to Figure 3A, the electromagnet of the brake 6 is powered off, and the brake arm 63, under the action of the spring 68, puts the brake 6 in a closed state, that is, the braking surface 610 of the brake lining 61 is in close contact with the brake drum 100, so as to achieve the braking purpose by relying on friction.

[0042] refer to Figure 3B , the electromagnet of the brake 6 is energized, and the brake arm 63 overcomes the elastic force of the spring 68 under the action of the magnetic field, so that the brake arm 63 moves in the direction away from the brake drum, and the brake arm 63 drives the brake lining 61 connected to it to move together. After the braking surface 610 of the brake lining 61 leaves the brake drum 100, the brake is released. The brake arm 63 will eventually remain stationary under the balance of forces, so that the brake 6 enters the open state. For example, the brake arm 63 abuts against the static plate (not shown), and remains stationary under the action of the spring, the magnetic field and the static plate, and enters the state as shown in FIG. Figure 3B The on state is shown.

[0043] Also refer to Figure 2 , Figure 3A and Figure 3B . According to some examples of the present application, the distance detecting device 62 is arranged on the brake 6 in a manner that can sense the distance from the set position of the brake arm 63 to the brake drum. That is, according to the examples of the present application, a suitable position can be selected on the brake arm of the brake as the set position, so that the distance detecting device 62 detects the first distance and the second distance from the set position to the brake drum. This allows the setting of the distance detecting device 62 to be configured according to the actual design requirements of the escalator. Specifically, according to some embodiments of the present application, the distance detecting device 62 is arranged in the brake arm. In a specific example to be introduced below, the selected set position is the joint surface 6361 of the brake arm 63 and the brake lining 61, and the distance detecting device 62 is a distance sensor (also called a displacement sensor), which is arranged in the brake arm near the joint surface 6361.

[0044] The set position is a position on the brake arm 63 , and in a further example of the present application, the set position is selected as one of a plurality of positions on the brake arm 63 that are perpendicular to the joining surface of the brake lining 61 and the brake drum 100 when the brake lining 61 is joined to the brake drum 100 .

[0045] According to a specific example of the present application, in e.g. Figure 3A and Figure 3BIn the example shown, the distance detection device 62 is a distance sensor, which is arranged in the brake arm 63 near a set position, and the set position is the connection surface 6361 of the brake arm 63 and the brake lining 61. In some cases, the distance sensor 62 as the distance detection device (in the description of the specific example below, the distance sensor is also directly used as the distance detection device) is arranged in a manner that the emission surface of the sensing signal of the distance sensor is flush with the connection surface 6361 of the brake arm 63 and the brake lining 61, which is equivalent to the distance sensor 62 being embedded in the brake arm 63 and directly contacting the brake lining 61. If the braking surface 610 of the brake lining 61 is called the surface, the surface where the brake lining 61 and the brake arm 63 are combined can be called the brake lining bottom surface. In this specific example, the distance sensor 62 is arranged in the brake arm and combined with the brake lining bottom surface to sense the distance from the brake lining bottom surface to the brake drum under different conditions.

[0046] Of course, as an alternative, the distance sensor 62 may also be along a vertical plane perpendicular to the joining surface of the brake lining 61 and the brake drum 100 but recessed into the brake arm 63 , that is, not flush with the surface 6361 .

[0047] When the brake 6 is in the Figure 3A In the closed state shown, the distance sensor 62 will sense the distance between the brake arm 63 and the brake drum 100, which is the second distance A2. More specifically, the second distance A2 is the distance from the distance sensor 62 to the brake drum engaging surface of the brake drum 100 for engaging the brake lining 61 when the brake 6 is in the closed state. It should be noted that the distance sensor 62 can be any sensor capable of sensing distance, such as an infrared distance sensor, a laser distance sensor, etc.

[0048] Subsequently, the brake 6 is released and switched to the open state, such as Figure 3B When the brake 6 is in the on state, the distance from the brake arm 63 to the brake drum 100 sensed by the distance sensor 62 is the first distance A1. More specifically, the first distance A1 is the distance from the distance detection device 62 to the brake drum engaging surface of the brake drum 100 for engaging the brake lining 61 when the brake 6 is in the on state.

[0049] The gap C between the braking surface 610 of the brake lining 61 and the brake drum 100 when the brake 6 is in the open state is the difference between the first distance A1 and the second distance A2. As discussed above, the first distance A1 remains substantially unchanged. In this case, the controller 64 can monitor the actual value of the gap C and its changes during the operation of the elevator by calculating the distance difference between the open state and the closed state detected successively, that is, the adjacent detection, and timely discover abnormal conditions of C, such as the size of C exceeds the upper limit of the preset range. For example, the preset range of C is 1 mm to 1.5 mm. If the controller 64 detects that the value of C exceeds 1.5 mm, it generates and sends a warning signal.

[0050] The warning signal can be transmitted to the monitoring room of the escalator and outputted in a visible and / or audible manner so that relevant personnel can understand and take measures such as replacing brake linings as soon as possible. In addition, in some cases, the controller 64 is also configured to take safety measures, such as forced braking to stop the escalator, when it is detected that C is not within a preset range, so as to ensure safety.

[0051] In addition, the distance D from the switch contact 70 of the electromagnet module to the brake arm 63 can also be monitored according to the size of the gap C. For the brake 6, there is a certain correspondence between the distance D and the gap C. When the brake 6 is adjusted and put into use, the proportional relationship between the distance D and the gap C can be determined. After the brake is put into use and the brake lining 61 is replaced, the relationship between the distance D and the gap C should be consistent with the proportional relationship determined earlier. Based on this, after the brake lining is replaced, the measurement of A1 and A2 can be performed to determine C, thereby judging whether the distance between the contact 70 and the brake arm 63 adjusted after the brake lining is replaced is accurate, and in some cases, the adjustment direction can also be given, such as increasing or decreasing the distance D.

[0052] Combination of the above Figure 2 , Figure 3A and Figure 3B The described escalator braking system can be implemented in, for example, Figure 1 In the escalator shown in FIG. 1 , the controller 64 can be implemented in the controller 115 (see FIG. Figure 1 ), the distance detection device is arranged in Figure 1 in a brake (not shown).

[0053] Figure 4It is a flow chart of a detection method for an escalator braking system according to an example of the present application. According to the method, in step S400, the first distance and the second distance between the brake arm and the brake drum of the brake are detected. Among them, the first distance is the distance between the brake arm and the brake drum when the brake is in an open state, and the second distance is the distance between the brake arm and the brake drum when the brake is in a closed state. In step S402, the difference between the first distance and the second distance detected successively, that is, the first distance and the second distance adjacent to each other in detection time are compared with a preset range. If the comparison result is that the difference is outside the preset range, then step S404 is entered, otherwise step S402 is continued. In step S404, a warning signal is generated and sent. In some cases, in step S404, safety measures can also be taken, such as stopping the operation of the escalator.

[0054] Figure 4 The method shown can be Figure 2 The following is also combined with Figure 2 , Figure 3A and Figure 3B The embodiment of the present application is further described. When the brake 6 is in the open state (see Figure 3B ), the distance detection device 62 disposed on the brake arm 63 detects the distance of the brake drum 100, namely the first distance A1 (step S400). Figure 3A ), the distance detection device 62 provided on the brake arm 63 detects the distance to the brake drum 100, i.e., the second distance A2 (step S400). The controller 64 calculates the difference between the first distance A1 and the second distance A2 based on the first distance A1 and the second distance A2 (step S402), and the difference is the gap C between the braking surface 610 of the brake lining 61 and the brake drum 100 when the brake 6 is in the on state. The controller 64 further compares the size of the gap C with the preset range (step S402) to determine the braking performance of the brake 6. When the comparison result shows that the size of the gap C is outside the preset range, the controller 64 generates and sends a warning signal (step S404). The controller 64 takes safety measures in some cases, such as stopping the operation of the escalator.

[0055] The detection method for the escalator braking system according to the example of the present application can be implemented as a program instruction module, which is set to, for example, Figure 1 In the controller 115 of the escalator system shown, Figure 1 The escalator system shown can monitor the performance of the brake by detecting the first distance and the second distance. Of course, when executing the method according to the example of the present application, for example Figure 1 The escalator shown also requires a distance detection device to be provided on the brake arm.

[0056] The present application also provides a controller. Figure 5 The controller includes a memory 500 and a processor 502. The memory 500 stores instructions, and the processor 502 executes the instructions, and when executing the instructions, the escalator braking system performs, for example, the above combined Figure 4 Examples of the method described. Wherein, the escalator system is, for example, combined with Figure 2 , Figure 3A , Figure 3B An example of any of the described escalator braking systems. The controller may be incorporated into Figure 1 The controller 115 of the escalator is shown.

[0057] The present application also provides a delivery system, which can perform, for example, the above-mentioned Figure 4 Each example of the method described, or including a combination of Figure 2 , Figure 3A , Figure 3B Any described braking system for a conveying system. As an example, the conveying system is, for example, an escalator or a moving walkway.

[0058] Although specific embodiments of the present application have been shown and described in detail to illustrate the principles of the present application, it should be understood that the present application can be implemented in other ways without departing from such principles.

Claims

1. A braking system for a conveying system, characterized in that: The system comprises: a brake comprising a brake arm and a brake lining connected to the brake arm; a distance detection device, which is arranged on the brake and is used to detect a first distance and a second distance between the brake arm and the brake drum, wherein the first distance is the distance between the brake arm and the brake drum when the brake is in an open state, and the second distance is the distance between the brake arm and the brake drum when the brake is in a closed state; A controller is used to determine the braking performance of the brake according to the difference between the first distance and the second distance detected successively, and to generate and send a warning signal when the difference is outside a preset range.

2. The braking system according to claim 1, characterized in that: The distance detecting device is arranged on the brake in a manner capable of sensing the distance between a set position of the brake arm and the brake drum, wherein the first distance and the second distance are the distances between the set position and the brake drum in the open state and the closed state, respectively.

3. The braking system according to claim 2, characterized in that: The distance detection device is arranged in the brake arm, and the set position is a connection surface between the brake arm and the brake lining.

4. The braking system according to claim 3, characterized in that: The distance detection device is arranged in the brake arm near the set position.

5. The braking system according to claim 1, characterized in that: The controller is connected to an output unit and / or a remote monitoring room.

6. The braking system according to any one of claims 1 to 5, characterized in that: The distance detection device is a distance sensor.

7. A method for detecting a brake of a conveying system, characterized in that: The method comprises: Detecting a first distance and a second distance between a brake arm and a brake drum of the brake, wherein the first distance is the distance between the brake arm and the brake drum when the brake is in an open state, and the second distance is the distance between the brake arm and the brake drum when the brake is in a closed state; comparing a difference between the first distance and the second distance with a preset range to determine the braking performance of the brake; When the comparison result shows that the difference is outside the preset range, a warning signal is generated and sent.

8. The method according to claim 7, characterized in that The detecting of the first distance and the second distance between the brake arm and the brake drum of the brake comprises: When the brake is in an on state, a distance detector provided on the brake arm detects the distance between the set position of the brake arm and the brake drum as a first distance; When the brake is in the closed state, the distance detector detects the distance from the set position of the brake arm to the brake drum as the second distance.

9. The method according to claim 8, characterized in that The distance detection device is arranged in the brake arm, and the set position is a connection surface between the brake arm and the brake lining.

10. The method according to claim 9, characterized in that The distance detection device is arranged in the brake arm near the set position.

11. The method according to claim 10, characterized in that: The distance detection device is a distance sensor.

12. A controller comprising a memory and a processor, wherein the memory stores instructions, and the processor is used to execute the instructions, and when executing the instructions: Detecting a first distance and a second distance between a brake arm and a brake drum of a brake for a conveying system, wherein the first distance is the distance between the brake arm and the brake drum when the brake is in an open state, and the second distance is the distance between the brake arm and the brake drum when the brake is in a closed state; comparing a difference between the first distance and the second distance with a preset range to determine the braking performance of the brake; When the comparison result shows that the difference is outside the preset range, a warning signal is generated and sent.

13. A delivery system comprising a braking system according to any one of claims 1 to 6, or capable of executing a method according to any one of claims 7 to 11, or comprising a controller according to claim 12.

14. A braking system according to any one of claims 1 to 6, or a method according to any one of claims 7 to 11, or a controller according to claim 12, or a delivery system according to claim 13, wherein: The conveying system includes an escalator and a moving walkway.

Images