A wheelchair roller fatigue testing machine
Patent Information
- Application Number
- CN202522245949.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-22
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-10-22
AI Technical Summary
[0004]然而，传统轮椅疲劳试验机的适应性差，自动化程度低，效率低下，操作烦琐且测试周期长
[0019]在本申请的实施例中，针对于现有技术中的适应性差，自动化程度低，效率低下，操作烦琐且测试周期长的问题，本申请提供了双滚筒距离调节模块调节滚筒距离的解决方案，具体为：包括机架和控制模块，所述机架上设有独立驱动滚筒模块、双滚筒距离调节模块和轮椅固定装置；所述独立驱动滚筒模块设有两个且相对设置，包括滚筒和用于驱动所述滚筒的电机；所述双滚筒距离调节模块与至少一个所述独立驱动滚筒模块连接，用于调节两个所述独立驱动滚筒模块之间的距离；所述控制模块与两个所述电机连接，用于设定测试时间或测试转数，并控制电机的转速；当测试时，所述轮椅固定装置固定待测轮椅，所述双滚筒距离调节模块调节两个所述独立驱动滚筒模块之间的距离，所述电机驱动所述滚筒转动，进而带动所述待测轮椅的滚轮转动。通过两个独立的驱动滚筒模块与双滚筒距离调节模块结合，解决了背景技术中适应性差，无法测试特殊轮椅的缺点，适配从普通代步轮椅到重型越野轮椅的多样化测试需求；通过控制模块解决了背景技术中自动化程度低、操作烦琐效率低且测试周期长的缺点，实现一键化操作，提升测试效率与准确性。
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Abstract
Description
Technical Field
[0001] This invention relates to the field of wheelchair testing, and more specifically to a wheelchair roller fatigue testing machine. Background Technology
[0002] With the increasing global aging population and growing demand for medical rehabilitation, the safety, durability, and adaptability of wheelchairs, as an important means of transportation, have become core concerns. As a key load-bearing and movement component of a wheelchair, the fatigue performance of the wheels directly affects the overall lifespan of the wheelchair and user safety. Therefore, before a wheelchair is put on the market, it is necessary to use a fatigue testing machine to simulate real-world road conditions to verify the durability of the wheels.
[0003] For testing wheelchair roller fatigue, traditional wheelchair fatigue testing machines are mostly based on manual adjustment and fixed parameter design. Currently available similar testing machines include those that switch drive modes via clutch, link the active and driven rollers via chain, and are equipped with resistance adjusters and motors to dynamically adjust roller resistance according to the wheelchair's output power. There are also machines that meet national standards, support speed adjustment of 0.5-2.0 m / s and 200 kg load testing, and are equipped with PLC program control and high-precision sensors to achieve basic automated operation.
[0004] However, traditional wheelchair fatigue testing machines have poor adaptability, low automation, low efficiency, cumbersome operation, and long testing cycles. Summary of the Invention
[0005] In view of the aforementioned problems, this application is made to provide a wheelchair roller fatigue testing machine that overcomes or at least partially solves the aforementioned problems, comprising a frame and a control module, wherein the frame is provided with an independent drive roller module, a dual roller distance adjustment module and a wheelchair fixing device;
[0006] The independent drive roller module has two components arranged opposite to each other, including a roller and a motor for driving the roller;
[0007] The dual-roller distance adjustment module is connected to at least one of the independent drive roller modules and is used to adjust the distance between the two independent drive roller modules.
[0008] The control module is connected to the two motors and is used to set the test time or test revolutions and control the motor speed.
[0009] During testing, the wheelchair fixing device secures the wheelchair to be tested, the dual-roller distance adjustment module adjusts the distance between the two independent drive roller modules, and the motor drives the rollers to rotate, thereby causing the wheels of the wheelchair to rotate.
[0010] Preferably, the dual-roller distance adjustment module includes a guide rail and a lead screw mechanism, and at least one of the independently driven roller modules is mounted on the guide rail via a slider.
[0011] Preferably, the roller is equipped with an adjustable stop module.
[0012] Preferably, the frame is also equipped with an electric hoist, which is connected to the wheelchair fixing device.
[0013] Preferably, it also includes an overload protection device, an emergency braking device, and an anti-tipping device;
[0014] The overload protection device is electrically connected to the electric hoist and the control module respectively; the emergency braking device is electrically connected to the motor and the control module respectively; the anti-tipping device is located on the side of the wheelchair fixing device.
[0015] Preferably, the wheelchair under test is equipped with a fault sensor.
[0016] Preferably, the adjustment range of the two independent drive roller modules is 350-900mm.
[0017] Preferably, the response time of the emergency braking device is 0.2 seconds.
[0018] This application has the following advantages:
[0019] In the embodiments of this application, addressing the problems of poor adaptability, low automation, low efficiency, cumbersome operation, and long testing cycles in the prior art, this application provides a solution for adjusting the roller distance using a dual-roller distance adjustment module. Specifically, it includes a frame and a control module. The frame is equipped with an independent drive roller module, a dual-roller distance adjustment module, and a wheelchair fixing device. Two independent drive roller modules are provided and arranged opposite to each other, each including a roller and a motor for driving the roller. The dual-roller distance adjustment module is connected to at least one of the independent drive roller modules to adjust the distance between the two independent drive roller modules. The control module is connected to the two motors to set the test time or test revolutions and control the motor speed. During testing, the wheelchair fixing device fixes the wheelchair to be tested, the dual-roller distance adjustment module adjusts the distance between the two independent drive roller modules, and the motor drives the roller to rotate, thereby rotating the wheels of the wheelchair to be tested. By combining two independent drive roller modules with a dual roller distance adjustment module, the shortcomings of the previous technology, such as poor adaptability and inability to test special wheelchairs, are solved, making it suitable for diverse testing needs from ordinary mobility wheelchairs to heavy-duty off-road wheelchairs. The control module solves the shortcomings of the previous technology, such as low automation, cumbersome operation, low efficiency, and long testing cycle, and realizes one-click operation, improving testing efficiency and accuracy. Attached Figure Description
[0020] To more clearly illustrate the technical solution of this application, the drawings used in the description of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the structure of a wheelchair roller fatigue testing machine according to an embodiment of this application;
[0022] Figure 2 This is a side view of a wheelchair roller fatigue testing machine provided in one embodiment of this application;
[0023] Figure 3 This is a schematic diagram of the frame structure of a wheelchair roller fatigue testing machine according to an embodiment of the present invention;
[0024] The reference numerals in the accompanying drawings are as follows:
[0025] 110. Independent drive roller module; 111. Motor; 112. Adjustable stop block module; 120. Dual roller distance adjustment module; 130. Wheelchair fixing device; 140. Electric hoist. Detailed Implementation
[0026] To make the objectives, features, and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0027] Through analysis of existing technologies, the inventors discovered that most testing machines use fixed roller spacing (e.g., 250±25mm) and fixed loads (e.g., below 300kg), only suitable for standard wheelchairs and unable to cover the needs of special products such as outdoor off-road wheelchairs; they rely on manual adjustment and single-roller drive, making operation cumbersome and testing cycles long (e.g., manual parameter setting is required for each test, resulting in a high error rate); some devices are only equipped with basic limit switches, lacking dynamic overload protection and emergency braking systems, posing a high safety risk; and many use single-roller or fixed obstacle modules, only able to simulate a single speed (e.g., 1.0-1.07m / s) or simple road conditions. Based on this, the inventors proposed a more precise, easier-to-operate, simpler-to-set-up, time-saving, and more stable testing method, as well as more accurate test results, which can meet the needs of a wider range of standard wheelchair roller fatigue testing machines.
[0028] Reference Figures 1-3 This application illustrates a wheelchair roller fatigue testing machine according to an embodiment of the present application, which includes a frame and a control module. The frame is equipped with an independent drive roller module, a dual roller distance adjustment module, and a wheelchair fixing device.
[0029] The independent drive roller module has two components arranged opposite to each other, including a roller and a motor 111 for driving the roller;
[0030] The dual-roller distance adjustment module 120 is connected to at least one of the independent drive roller modules 110 and is used to adjust the distance between the two independent drive roller modules 110.
[0031] The control module is connected to the two motors 111 and is used to set the test time or test revolutions and control the speed of the motors.
[0032] During testing, the wheelchair fixing device 130 fixes the wheelchair to be tested, the dual roller distance adjustment module 120 adjusts the distance between the two independent drive roller modules, and the motor 111 drives the rollers to rotate, thereby driving the wheels of the wheelchair to be tested to rotate.
[0033] In the embodiments of this application, the combination of two independent drive roller modules and a dual roller distance adjustment module solves the shortcomings of poor adaptability and inability to test special wheelchairs in the prior art, and adapts to the diverse testing needs from ordinary mobility wheelchairs to heavy-duty off-road wheelchairs. The control module solves the shortcomings of low automation, cumbersome operation, low efficiency and long testing cycle in the prior art, and realizes one-click operation, improving testing efficiency and accuracy.
[0034] The following will further describe a wheelchair roller fatigue testing machine in this exemplary embodiment.
[0035] In one embodiment of the present invention, the specific features of the control module can be further described in conjunction with the following description.
[0036] As an example, the control module is a programmable logic controller (PLC) control system, electrically connected to the two motors. The control module is also electrically connected to the dual-roller distance adjustment module 120, motor 111, electric hoist 140, and high-precision sensor. It supports two modes: setting test time or test rotation speed. It can receive and process test data collected by the high-precision sensor, and simultaneously send control commands to the dual-roller distance adjustment drive module, motor, and electric hoist 140, realizing digital parameter setting, dynamic monitoring of the test process, and automatic control. The control module makes the surface linear velocity of the rollers adjustable within the range of 0-4.32 km / h (±5%).
[0037] In one embodiment of the present invention, the specific features of the independent drive roller module 110 can be further described in conjunction with the following description.
[0038] In one specific implementation, the frame is provided with a first independent drive roller module and a second independent drive roller module. Both the first independent drive roller module and the second independent drive roller module are located at the bottom of the frame and are arranged opposite each other to support and drive the left and right rollers of the wheelchair. Each of the two independent drive roller modules 110 includes a roller and a motor 111 that independently drives the roller.
[0039] In one embodiment of the present invention, the specific features of the dual-roller distance adjustment module 120 can be further described in conjunction with the following description.
[0040] The dual-roller distance adjustment module 120 includes a guide rail and a lead screw mechanism, and at least one of the independent drive roller modules 110 is mounted on the guide rail via a slider.
[0041] As an example, the dual-roller distance adjustment module 120 is connected to the first independent drive roller module and / or the second independent drive roller module to adjust the distance between the two rollers. The adjustment range is from 350mm to 900mm. It is quick to install, has a wide range of applications, and can be used for wheelchairs of different types and sizes.
[0042] In one specific implementation, the dual-roller distance adjustment module 120 is located at the bottom of the frame and at the output end of the independent drive roller module 110.
[0043] In one embodiment of the present invention, the specific features of the wheelchair securing device 130 can be further described in conjunction with the following description.
[0044] As an example, the wheelchair securing device 130 is disposed beside the independently secured drive roller module 110, and is used to secure the wheelchair frame after the wheelchair is placed on the roller. The wheelchair securing device can be a clamping structure, a strap structure, or others.
[0045] In one embodiment of the present invention, an adjustable stop module 112 is installed on the roller. The adjustable stop module 112 is used to simulate road obstacles during testing, generating periodic impacts on the wheelchair roller.
[0046] In one embodiment of the present invention, the frame is further provided with an electric hoist 140, which is connected to the wheelchair fixing device 130.
[0047] It should be noted that the wheelchair roller fatigue testing machine is equipped with a modular load system, which includes an electric hoist and a test dummy. The high degree of automation makes the test safer.
[0048] In one specific implementation, the electric hoist 140 is positioned above the independent fixed drive roller module 110, forming a modular load system for precisely lifting and lowering counterweights and wheelchair templates, and the load weight can be adjusted between 25kg and 300kg.
[0049] In one embodiment of the present invention, the wheelchair roller fatigue testing machine further includes an overload protection device, an emergency braking device, and an anti-tipping device;
[0050] The overload protection device is electrically connected to the electric hoist and the control module respectively; the emergency braking device is electrically connected to the motor and the control module respectively; the anti-tipping device is located on the side of the wheelchair fixing device.
[0051] It should be noted that the overload protection device monitors the load status of the electric hoist's fixing device. When the load exceeds a set threshold, it sends a signal to the PLC control system. When the PLC control system receives an overload signal or other abnormal signal, it activates the emergency braking device, and the response time of the emergency braking device does not exceed 0.2 seconds. The anti-tipping device works in conjunction with the wheelchair fixing device to limit the wheelchair and prevent it from tipping over during testing. The integration of overload protection, emergency braking, and anti-tipping devices improves the safety performance of the testing machine by 40%, avoiding damage to the testing instruments and samples, and resulting in more accurate test results.
[0052] In one embodiment of the present invention, the wheelchair under test is equipped with a fault sensor.
[0053] As an example, the fault sensor is located near the wheelchair frame and is electrically connected to the PLC control system. The installation position of the fault sensor does not obstruct the wheelchair testing process. When the wheelchair is damaged and collapses and touches the fault sensor, the fault sensor sends a signal to the PLC control system, triggering the equipment to automatically stop running. At the same time, the PLC control system records the number of fatigue cycles at this time.
[0054] The basic working principle of the wheelchair roller fatigue testing machine is as follows: The operator first digitally adjusts parameters such as wheelbase, speed, and rotation speed via a PLC touchscreen. The equipment then automatically responds, with the dual-roller distance adjustment module precisely moving to adapt to the wheelchair width. The operator uses an electric hoist to precisely raise and lower the corresponding modular counterweights and wheelchair template to the positions of the two rollers. After the test starts, the motor system drives the independently fixed drive roller to rotate at a uniform speed, which in turn drives the wheelchair rollers and driven rollers to rotate through friction. Simultaneously, adjustable stop modules installed on the rollers simulate road bumps and other obstacles, generating periodic impacts on the rollers. Throughout the test, the wheelchair is securely fixed by a clamping device to ensure test validity. Integrated high-precision sensors collect data in real time, and the PLC system dynamically monitors and ensures the test is conducted according to preset parameters. Overload protection and other safety devices provide full protection, ultimately achieving efficient, accurate, and safe reproduction of roller fatigue testing under complex road conditions.
[0055] This equipment employs PLC touchscreen program control, integrating high-precision sensors and a real-time data acquisition system. It can dynamically monitor parameters such as test rotation speed and other parameters, with a test error rate lower than the industry average. Compared to the manual adjustment mode of traditional testing machines, it supports digital parameter setting, achieving "one-click" operation and significantly improving testing efficiency.
[0056] Utilizing a dual-roller drive system (reference roll + driven roll) and an adjustable obstacle module, it can simulate complex road conditions at speeds ranging from 0 to 4.32 km / h, covering real-world usage scenarios such as bumpy roads. The roller spacing is adjustable from 350 to 900 mm, and with a modular load system ranging from 25 kg to 300 kg, it is suitable for both standard wheelchairs and specialized products such as outdoor off-road wheelchairs. In contrast, similar equipment is often limited by fixed parameters, making it difficult to meet diverse testing needs.
[0057] The equipment integrates overload protection, emergency braking, and anti-tipping devices, improving safety performance by 40% compared to traditional testing machines. It also strictly adheres to 18 international and domestic standards, including GB / T 18029 and ISO 7176.
[0058] Compared to traditional single-roller testing machines or general fatigue testing equipment, wheelchair roller fatigue testing machines improve testing accuracy by 20%, expand scenario coverage by 3 times, and help companies shorten product launch cycles by 50%.
[0059] The testing method for this wheelchair roller fatigue testing machine is as follows:
[0060] Before starting the test, check that the power supply to the equipment is fully connected and the equipment is in normal working order. Press the "Power Switch" button to turn on the equipment. Load the sample with the dummy that is claimed to bear the load and secure it. First, measure the center distance between the front and rear wheels of the sample, adjust the roller spacing, and use an electric hoist to move the sample with the dummy onto the rollers. Secure the wheelchair frame with the fixing rod. Place the fault sensor at the wheelchair frame so that it does not obstruct the wheelchair during the test but still serves to detect faults. According to the fatigue test requirements of different standards, the surface linear velocity of the reference roller can be set to different speeds in the control panel. The test time or number of tests can also be set. Click "Zero" to clear the previous test data. If the wheelchair is damaged during the test and collapses, causing it to touch the fault sensor, the equipment will automatically stop and record the number of fatigue cycles at the time of failure.
[0061] Although preferred embodiments of the present application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present application.
[0062] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.
[0063] The wheelchair roller fatigue testing machine provided in this application has been described in detail above. Specific examples have been used to illustrate the principle and implementation of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of this application. Therefore, the content of this specification should not be construed as a limitation of this application.
Claims
1. A wheelchair roller fatigue testing machine, comprising a frame and a control module, characterized in that, The frame is equipped with an independent drive roller module, a dual roller distance adjustment module, and a wheelchair fixing device; The independent drive roller module has two components arranged opposite to each other, including a roller and a motor for driving the roller; The dual-roller distance adjustment module is connected to at least one of the independent drive roller modules and is used to adjust the distance between the two independent drive roller modules. The control module is connected to the two motors and is used to set the test time or test revolutions and control the motor speed. During testing, the wheelchair fixing device secures the wheelchair to be tested, the dual-roller distance adjustment module adjusts the distance between the two independent drive roller modules, and the motor drives the rollers to rotate, thereby causing the wheels of the wheelchair to rotate.
2. The wheelchair roller fatigue testing machine according to claim 1, characterized in that, The dual-roller distance adjustment module includes a guide rail and a lead screw mechanism, and at least one of the independent drive roller modules is mounted on the guide rail via a slider.
3. The wheelchair roller fatigue testing machine according to claim 1, characterized in that, An adjustable stop module is installed on the roller.
4. The wheelchair roller fatigue testing machine according to claim 1, characterized in that, The frame is also equipped with an electric hoist, which is connected to the wheelchair fixing device.
5. The wheelchair roller fatigue testing machine according to claim 4, characterized in that, It also includes overload protection devices, emergency braking devices, and anti-tipping devices; The overload protection device is electrically connected to the electric hoist and the control module respectively; the emergency braking device is electrically connected to the motor and the control module respectively; the anti-tipping device is located on the side of the wheelchair fixing device.
6. The wheelchair roller fatigue testing machine according to claim 5, characterized in that, The wheelchair under test is equipped with a fault sensor.
7. The wheelchair roller fatigue testing machine according to claim 1, characterized in that, The adjustment range of the two independent drive roller modules is 350-900mm.
8. The wheelchair roller fatigue testing machine according to claim 5, characterized in that, The emergency braking device has a response time of 0.2 seconds.