Bicycle hub test equipment

Abstract

The utility model discloses a bicycle hub test device, which can simulate abundant bicycle running states to obtain complete and comprehensive test data, and comprises a rack, a frame, wheels, a hub to be tested, a torsion wheel, a driven wheel, a first driving device, a driving wheel, a rear hub test chain, a front hub test chain, a brake mechanism and a counterweight mechanism, the front end of the frame is pivoted and matched with the rack; the wheels are mounted on the frame and comprise tires; the to-be-detected hub and the wheel rotate synchronously; the torsion wheel is arranged below the wheel and makes contact with the tire, and a driven wheel is installed on a rotating shaft of the torsion wheel. The driving wheel is driven by a first driving device to rotate, and is in transmission connection with a to-be-tested hub through a rear hub test chain or is in transmission connection with the driven wheel through a front hub test chain; the brake mechanism acts on the wheels to simulate braking; and the counterweight mechanism acts on the frame to adjust the load.

Description

Technical Field

[0001] This utility model belongs to the field of bicycle technology, and specifically refers to a bicycle hub testing device. Background Technology

[0002] The hub is an important component inside a bicycle wheel, located at the center of the wheel. Its main function is to support the wheel and allow it to rotate smoothly. The hub typically contains bearings and gears, which, in conjunction with the axle and chain, allow the rider to easily pedal and propel the bicycle forward.

[0003] Existing equipment has limitations in its functionality when testing bicycle hubs. For example, a single device can only simulate the operating state of the hub when it is installed on either the front or rear wheel of a bicycle. This means that manufacturers need to configure multiple devices to obtain complete and comprehensive data, which increases testing costs and also causes some problems in the later data integration. Utility Model Content

[0004] The main purpose of this invention is to provide a bicycle hub testing device that solves the problems existing in the prior art, and can simulate a variety of bicycle operating conditions to obtain complete and comprehensive test data.

[0005] To achieve the above objectives, the solution of this utility model is:

[0006] A bicycle hub testing device includes a frame, a wheel, a hub under test, a torsion wheel, a driven wheel, a first drive unit, a drive wheel, a rear hub test chain, a front hub test chain, a braking mechanism, and a counterweight mechanism. The front end of the frame is pivotally connected to the frame. The wheel, including a tire, is mounted on the frame. The hub under test rotates synchronously with the wheel. The torsion wheel is located below the wheel and contacts the tire, with the driven wheel mounted on its axle. The drive wheel is driven by the first drive unit to rotate and is connected to the hub under test via the rear hub test chain, or to the driven wheel via the front hub test chain. The braking mechanism acts on the wheel to simulate braking. The counterweight mechanism acts on the frame to adjust the load.

[0007] The frame is provided with a bracket for mounting the torque wheel, and a torque adjuster is mounted on the bracket. The torque adjuster is coaxially connected to the torque wheel.

[0008] The first driving device is a stepper motor; the drive wheel is coaxially connected to the output shaft of the motor, and its circumferential surface is provided with two rings of convex teeth for the rear hub test chain and the front hub test chain to mesh respectively.

[0009] The braking mechanism includes a disc brake that rotates synchronously with the wheel and a second drive device fixed on the frame. The disc brake is connected to the second drive device via a brake cable.

[0010] Preferably, the second driving device is a stepper motor.

[0011] The counterweight mechanism includes a support frame disposed above the rear end of the vehicle frame, and a plurality of counterweights; the support frame is provided with positioning posts for the counterweights to be fitted.

[0012] Preferably, the counterweight mechanism further includes a lifting handle mounted on the support frame; the lifting handle is threaded through the support frame and abuts against the machine frame.

[0013] The bicycle hub testing device further includes two sets of cylinders, a brake wheel bracket, and a brake wheel disposed on both sides of the frame; the cylinders are fixed relative to the frame; the brake wheel bracket is disposed at the output end of the cylinder; the brake wheel rotates and engages on the brake wheel bracket; the cylinder drives the brake wheel bracket and its brake wheel to contact or separate from the wheel on the side of the wheel.

[0014] The bicycle hub testing equipment also includes a plate covering the surface of the frame, and a display, keyboard and mouse, and alarm mounted on the frame.

[0015] The bicycle hub testing equipment also includes two tensioners installed on the frame, which are used to adjust the tension of the rear hub test chain and the front hub test chain, respectively.

[0016] After adopting the above technical solution, the present invention has the following technical effects:

[0017] This invention, by selecting either a rear hub test chain or a front hub test chain, can simulate a bicycle tire as either the rear or front tire. By combining different torques from the torque wheel, different power outputs from the first drive unit, resistance applied by the braking mechanism, and pressure applied by the counterweight mechanism, fatigue tests can be conducted on the hub under various bicycle operating conditions. This yields complete and comprehensive test data for the hub, facilitating improvements by the manufacturer. Specifically, during rear tire testing, the rear hub test chain engages with the drive wheel and the hub under test on the wheel, causing the wheel to rotate. The torque wheel provides resistance for the test. During front tire testing, the front hub test chain engages with the drive wheel and the driven wheel, causing the torque wheel to rotate and linking with the wheel for testing. Attached Figure Description

[0018] Figure 1 This is an overall perspective view of a specific embodiment of the present utility model;

[0019] Figure 2 This is a partial perspective view of a specific embodiment of the present utility model;

[0020] Figure 3 This is a partial front view of a specific embodiment of the present utility model;

[0021] Figure 4 This is a partial top view of a specific embodiment of the present utility model;

[0022] Figure 5 This is a partial side view of a specific embodiment of the present utility model;

[0023] Explanation of icon numbers:

[0024] 1-Frame; 11-Bracket; 12-Bearing plate; 2-Chassis; 3-Wheel; 31-Tire; 4-First hub; 5-Torque wheel; 6-Driven wheel; 7-First drive unit; 8-Drive wheel; 9-Rear hub test chain; 10-Front hub test chain; 20-Shaft; 30-Torque adjuster; 40-Disc brake; 50-Second drive unit; 60-Bearing frame; 70-Counterweight; 80-Lifting handle; 90-Cylinder; 100-Brake wheel bracket; 200-Brake wheel; 300-Panel; 400-Monitor; 500-Keyboard and mouse; 600-Alarm; 700, 700'-Tensioner. Detailed Implementation

[0025] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0026] refer to Figure 1-5 As shown, this utility model discloses a bicycle hub testing device, including a frame 1, a frame 2, a wheel 3, a hub to be tested 4, a torsion wheel 5, a driven wheel 6, a first drive device 7, a drive wheel 8, a rear hub test chain 9, a front hub test chain 10, a brake mechanism, and a counterweight mechanism.

[0027] The frame 2 is mainly the rear half of the bicycle frame, and its front end is pivotally connected to the frame 1;

[0028] Wheel 3 is mounted on frame 2, including tire 31;

[0029] The hub 4 under test rotates synchronously with the wheel 3;

[0030] Torque wheel 5 is located below wheel 3 and in contact with tire 31, and driven wheel 6 is mounted on its axle;

[0031] The drive wheel 8 is driven by the first drive device 7 to rotate, and is connected to the test hub 4 through the rear hub test chain 9, or to the driven wheel 6 through the front hub test chain 10.

[0032] The braking mechanism acts on wheel 3 to simulate braking;

[0033] The counterweight mechanism acts on frame 2 to adjust the load.

[0034] Through the above scheme, this utility model, by selecting either the rear hub test chain 9 or the front hub test chain 10, can simulate the tire 3 as the rear or front tire of a bicycle. Furthermore, by combining different torques of the torque wheel 5, different power outputs of the first drive device 7, resistance applied by the braking mechanism, and pressure applied by the counterweight mechanism, fatigue tests can be conducted on the hub 4 under various bicycle operating conditions. This allows for the acquisition of complete and comprehensive test data on the hub 4, facilitating improvements by the manufacturer. Specifically, during the rear tire test, the rear hub test chain 9 engages with the drive wheel 8 and the hub 4 on the wheel 3, thereby driving the wheel 3 to rotate. At this time, the torque wheel 5 provides resistance for the test. During the front tire test, the front hub test chain 10 engages with the drive wheel 8 and the driven wheel 6, thereby driving the torque wheel 5 to rotate and linking it with the wheel 3 for testing.

[0035] The following are specific embodiments of the present invention.

[0036] The aforementioned frame 1 is equipped with a pivot shaft 20 for pivotal engagement with the vehicle frame 2.

[0037] The aforementioned frame 1 is equipped with a bracket 11 for mounting the torque wheel 5. A torque adjuster 30 is mounted on the bracket 11. The torque adjuster 30 is coaxially connected to the torque wheel 5 and is used to adjust the torque output by the torque wheel 5. This allows for the simulation of the resistance experienced by the wheel 3 and the hub 4 under test in different scenarios, i.e., the simulation of the different friction forces experienced by the wheel on different roads.

[0038] The first driving device 7 mentioned above is a motor, preferably a stepper motor, which can achieve more precise torque output to drive the drive wheel 8 to rotate; the drive wheel 8 is coaxially connected to the output shaft of the motor, and its circumference is provided with two rings of convex teeth for the rear hub test chain 9 and the front hub test chain 10 to mesh respectively.

[0039] The aforementioned braking mechanism includes a disc brake 40 that rotates synchronously with the wheel 3, and a second drive device 50 fixed on the frame 1. The disc brake 40 is connected to the second drive device 50 via a brake cable (not shown in the figure), and the second drive device 50 drives the disc brake 40 to open and close via the brake cable to achieve disc braking. In this embodiment, the second drive device 50 is a motor, preferably a stepper motor, which can achieve more precise torque output.

[0040] The aforementioned counterweight mechanism includes a support frame 60 located above the rear end of the frame 2, and several counterweights 70. The support frame 60 is provided with a positioning post 601 for the counterweights 70 to be fitted to ensure that the counterweights 70 will not fall off the support frame 60 during the test.

[0041] Furthermore, the aforementioned counterweight mechanism also includes a lifting handle 80 installed on the support frame 60; the lifting handle 80 is threaded through the support frame 60 and abuts against the frame 1, specifically against the support plate 12 on the frame 1.

[0042] This invention also includes two sets of cylinders 90, a brake wheel bracket 100, and a brake wheel 200 disposed on both sides of the frame 2; the cylinders 90 are fixed relative to the frame 2; the brake wheel bracket 100 is disposed at the output end of the cylinders 90; the brake wheel 200 is rotatably coupled to the brake wheel bracket 100, and the cylinders 90 drive the corresponding brake wheel bracket 100 and its brake wheel 200 to contact or separate from the wheel 3 on the side of the wheel 3. The different output modes of the two sets of cylinders 90, brake wheel bracket 100, and brake wheel 200 can simulate the situation of unbalanced force on both sides of the wheel 3.

[0043] This utility model also includes a plate 300 covering the surface of the frame 1 to make the test environment as enclosed as possible, and electrical components such as a display 400, a keyboard and mouse 500, and an alarm 600 installed on the frame 1. The plate 300 can be a fixed cover or an openable / closable door / window; the display 400 can display relevant test data during the test, such as running speed, wheel load, forward and reverse rotation time and number of times, braking operation, etc., and the parameters can be adjusted.

[0044] This utility model also includes two tensioners 700 and 700' installed on the frame 2, which are used to adjust the tension of the rear hub test chain 9 and the front hub test chain 10, respectively.

[0045] This invention can achieve, but is not limited to, the following functions during the testing process:

[0046] (1) The unbalanced force on the left and right wheels 3 (left and right brake wheels) has been added.

[0047] (2) It can control the magnitude of the friction force on wheel 3 (torsion wheel);

[0048] (3) Continuous braking (brake mechanism);

[0049] (4) Different loads (counterweight mechanisms) on frame 2;

[0050] (5) Test the impact resistance of the hub 4 under test by forward and reverse rotation (first drive device).

[0051] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A bicycle hub testing device, characterized in that: It includes a frame, chassis, wheels, hub under test, torsion wheel, driven wheel, first drive unit, drive wheel, rear hub test chain, front hub test chain, braking mechanism, and counterweight mechanism; The front end of the vehicle frame is pivotally connected to the frame; The wheels are mounted on the frame, including tires; The hub under test rotates synchronously with the wheel; The torsion wheel is located below the wheel and in contact with the tire, and the driven wheel is mounted on its shaft; The drive wheel is driven by the first drive device to rotate, and is connected to the test hub via the rear hub test chain, or to the driven wheel via the front hub test chain; The braking mechanism acts on the wheels to simulate braking; The counterweight mechanism acts on the frame to adjust the load.

2. The bicycle hub testing device as described in claim 1, characterized in that: The frame is provided with a bracket for mounting the torque wheel, and a torque adjuster is mounted on the bracket. The torque adjuster is coaxially connected to the torque wheel.

3. The bicycle hub testing device as described in claim 1, characterized in that: The first driving device is a stepper motor; the drive wheel is coaxially connected to the output shaft of the motor, and its circumferential surface is provided with two rings of convex teeth for the rear hub test chain and the front hub test chain to mesh respectively.

4. The bicycle hub testing device as described in claim 1, characterized in that: The braking mechanism includes a disc brake that rotates synchronously with the wheel and a second drive device fixed on the frame. The disc brake is connected to the second drive device via a brake cable.

5. The bicycle hub testing device as described in claim 4, characterized in that: The second driving device is a stepper motor.

6. The bicycle hub testing device as described in claim 1, characterized in that: The counterweight mechanism includes a support frame disposed above the rear end of the vehicle frame, and a plurality of counterweights; the support frame is provided with positioning posts for the counterweights to be fitted.

7. The bicycle hub testing device as described in claim 6, characterized in that: The counterweight mechanism also includes a lifting handle installed on the support frame; the lifting handle is threaded through the support frame and abuts against the frame.

8. The bicycle hub testing device as described in claim 1, characterized in that: It also includes two sets of cylinders, brake wheel brackets and brake wheels disposed on both sides of the frame; the cylinders are fixed relative to the frame; the brake wheel brackets are disposed at the output end of the cylinders; the brake wheels are rotatably fitted on the brake wheel brackets, and the cylinders drive the brake wheel brackets and their brake wheels to contact or separate from the wheel on the side of the wheel.

9. The bicycle hub testing device as described in claim 1, characterized in that: It also includes panels covering the surface of the rack, as well as a monitor, keyboard and mouse, and alarm mounted on the rack.

10. The bicycle hub testing device as described in claim 1, characterized in that: It also includes two tensioners installed on the frame, which are used to adjust the tension of the rear hub test chain and the front hub test chain, respectively.

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