Bicycle hub test equipment

Abstract

The invention discloses bicycle hub test equipment, 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] The invention belongs to the technical field of bicycles, in particular to a bicycle hub testing device. Background Art

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

[0003] When testing bicycle hubs, existing equipment has the defect of being single in function. For example, a single device can only simulate the temporary operating state of the hub installed on the front or rear wheel of a bicycle. As a result, manufacturers need to configure multiple devices if they want to obtain complete and comprehensive data, which increases the testing cost and also causes certain problems in the subsequent data integration. Summary of the invention

[0004] The main purpose of the present invention is to provide a bicycle hub testing device to solve the problems existing in the prior art and to simulate a variety of bicycle running conditions to obtain complete and comprehensive test data.

[0005] In order to achieve the above object, the solution of the present invention is: A bicycle hub testing device comprises a frame, a vehicle frame, a wheel, a hub to be tested, a torque 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 pivotally connected to the frame; the wheel is mounted on the frame and comprises a tire; the hub to be tested rotates synchronously with the wheel; the torque wheel is arranged below the wheel and contacts the tire, and the driven wheel is mounted on its rotating shaft; the driving wheel is driven by the first driving device to rotate, and is transmission-connected to the hub to be tested through the rear hub test chain, or transmission-connected to the driven wheel through the front hub test chain; the brake mechanism acts on the wheel to simulate braking; the counterweight mechanism acts on the frame to adjust the load.

[0006] The frame is provided with a bracket for mounting the torque wheel, a torque regulator is mounted on the bracket, and the torque regulator is coaxially connected to the torque wheel.

[0007] The first driving device is a stepping motor; the driving wheel is coaxially connected to the output shaft of the motor, and its circumference is provided with two circles of convex teeth for the rear hub test chain and the front hub test chain to engage respectively.

[0008] The brake mechanism comprises a disc brake which rotates synchronously with the wheel, and a second driving device fixed on the frame, and the disc brake is transmission-connected to the second driving device via a brake line.

[0009] Preferably, the second driving device is a stepping motor.

[0010] The counterweight mechanism comprises a bearing frame arranged above the rear end of the frame, and a plurality of counterweight weights; the bearing frame is provided with a positioning column for the counterweight weights to be sleeved.

[0011] Preferably, the counterweight mechanism further comprises a lifting handle mounted on the bearing frame; the lifting handle is threadedly connected to pass through the bearing frame and abuts against the frame.

[0012] The bicycle hub testing equipment also includes two groups of cylinders, brake wheel brackets and brake wheels arranged on both sides of the frame; the cylinders are relatively fixed to the frame; the brake wheel brackets are arranged at the output end of the cylinders; the brake wheel is rotatably engaged on the brake wheel brackets, and the cylinders drive the brake wheel brackets and their brake wheel to contact or separate from the wheel on the side of the wheel.

[0013] The bicycle hub testing device further comprises a plate covering the surface of the frame, and a display, a keyboard and a mouse, and an alarm arranged on the frame.

[0014] The bicycle hub test equipment further comprises two tensioners mounted on the frame, which are respectively used to adjust the tension of the rear hub test chain and the front hub test chain.

[0015] After adopting the above technical solution, the present invention has the following technical effects: The present invention can simulate a tire as a rear tire or a front tire of a bicycle by selecting one of a rear hub test chain and a front hub test chain, and can perform fatigue tests on the hub to be tested under various bicycle operating conditions by coordinating different torques of the torque wheel, different powers output by the first drive device, the resistance applied by the brake mechanism and the pressure applied by the counterweight mechanism, thereby obtaining complete and comprehensive test data of the hub to be tested, which is convenient for manufacturers to improve the hub to be tested; specifically, when performing a rear tire test, the rear hub test chain is meshed with the driving wheel and the hub to be tested on the wheel, thereby driving the wheel to rotate, and the torque wheel provides resistance for testing; when performing a front tire test, the front hub test chain is meshed with the driving wheel and the driven wheel, thereby driving the torque wheel to rotate and linking the wheel for testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall stereogram of a specific embodiment of the present invention; Figure 2It is a partial stereogram of a specific embodiment of the present invention; Figure 3 It is a partial front view of a specific embodiment of the present invention; Figure 4 It is a partial top view of a specific embodiment of the present invention; Figure 5 It is a partial side view of a specific embodiment of the present invention; Description of Figure Numbers: 1-frame; 11-bracket; 12-bearing plate; 2-frame; 3-wheel; 31-tire; 4-first hub; 5-torque wheel; 6-driven wheel; 7-first driving device; 8-driving wheel; 9-rear hub test chain; 10-front hub test chain; 20-spindle; 30-torque adjuster; 40-disc brake; 50-second driving device; 60-bearing frame; 70-counterweight; 80-lifting handle; 90-cylinder; 100-brake wheel bracket; 200-brake wheel; 300-plate; 400-display; 500-keyboard and mouse; 600-alarm; 700, 700'-tensioner. DETAILED DESCRIPTION

[0017] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0018] refer to Figure 1-5 As shown, the present invention discloses a bicycle hub testing device, comprising a frame 1, a frame 2, a wheel 3, a hub to be tested 4, a torque wheel 5, a driven wheel 6, a first driving device 7, a driving wheel 8, a rear hub test chain 9, a front hub test chain 10, a brake mechanism and a counterweight mechanism; The frame 2 is mainly the rear half of the bicycle frame, and its front end is pivotally connected with the frame 1; The wheel 3 is mounted on the frame 2 and includes a tire 31; The hub 4 to be tested rotates synchronously with the wheel 3; The torque wheel 5 is arranged below the wheel 3 and in contact with the tire 31, and a driven wheel 6 is mounted on its rotating shaft; The driving wheel 8 is driven by the first driving device 7 to realize rotation, and is connected to the hub 4 to be tested through the rear hub test chain 9, or is connected to the driven wheel 6 through the front hub test chain 10; The brake mechanism acts on the wheel 3 to simulate braking; The counterweight mechanism acts on the frame 2 to adjust the load.

[0019] Through the above scheme, the present invention can simulate the tire 3 as the rear tire or the front tire of a bicycle by selecting one of the rear hub test chain 9 and the front hub test chain 10, and cooperate with the different torques of the torque wheel 5, the different powers output by the first drive device 7, the resistance applied by the brake mechanism and the pressure applied by the counterweight mechanism, so as to carry out a fatigue test of the hub 4 to be tested under various bicycle operating conditions, thereby obtaining complete and comprehensive test data of the hub 4 to be tested, which is convenient for the manufacturer to improve the hub 4 to be tested; specifically, when conducting a rear tire test, the rear hub test chain 9 is engaged with the driving wheel 8 and the hub 4 to be tested on the wheel 3, thereby driving the wheel 3 to rotate, and the torque wheel 5 provides resistance for testing; when conducting a front tire test, the front hub test chain 10 is engaged with the driving wheel 8 and the driven wheel 6, thereby driving the torque wheel 5 to rotate and linking the wheel 3 for testing.

[0020] Specific embodiments of the present invention are shown below.

[0021] The frame 1 is provided with a rotating shaft 20 for pivoting with the frame 2 .

[0022] The frame 1 is provided with a bracket 11 for mounting the torque wheel 5, and a torque regulator 30 is mounted on the bracket 11. The torque regulator 30 is coaxially connected to the torque wheel 5 and is used to adjust the torque output by the torque wheel 5, thereby simulating the resistance exerted on the wheel 3 and the hub 4 to be tested in different scenarios, that is, simulating the different friction forces exerted on the wheel on different roads.

[0023] The above-mentioned first driving device 7 is a motor, preferably a stepping motor, which can achieve more precise torque output to drive the driving wheel 8 to rotate; the driving wheel 8 is coaxially connected to the output shaft of the motor, and its circumference is provided with two circles of convex teeth for the rear hub test chain 9 and the front hub test chain 10 to engage respectively.

[0024] The brake 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 through a brake line (not shown in the figure), and the second drive device 50 drives the opening and closing of the disc brake 40 through the brake line to achieve disc braking. In this embodiment, the second drive device 50 is a motor, preferably a stepping motor, which can achieve more accurate torque output.

[0025] The above-mentioned counterweight mechanism includes a support frame 60 arranged above the rear end of the frame 2, and a plurality of counterweights 70; the support frame 60 is provided with a positioning column 601 for the counterweights 70 to be mounted to ensure that the counterweights 70 will not fall off the support frame 60 during the test.

[0026] Furthermore, the counterweight mechanism further comprises a lifting handle 80 mounted on the carrier frame 60 ; the lifting handle 80 is threadedly connected to penetrate the carrier frame 60 and abuts against the frame 1 , specifically abuts against the bearing plate 12 on the frame 1 .

[0027] The present invention further comprises two groups of cylinders 90, brake wheel brackets 100 and brake wheels 200 arranged on both sides of the vehicle frame 2; the cylinders 90 are relatively fixed to the vehicle frame 2; the brake wheel brackets 100 are arranged at the output end of the cylinders 90; the brake wheel 200 is rotatably matched on the brake wheel brackets 100, and the cylinders 90 drive the corresponding brake wheel brackets 100 and their brake wheels 200 to contact or separate from the wheel 3 on the side of the wheel 3. The different output forms of the two groups of cylinders 90, the brake wheel brackets 100 and the brake wheel 200 can simulate the situation where the forces on both sides of the wheel 3 are unbalanced.

[0028] The present invention also includes a plate 300 covering the surface of the frame 1 to make the test environment as closed as possible, and electrical components such as a display 400, a keyboard and mouse 500, and an alarm 600 arranged on the frame 1. The plate 300 can be a fixed cover or a door or window that can be opened and closed; the display 400 can display corresponding test data during the test, such as the running speed, the load on the wheels, the forward and reverse time and number, the number of brake operations, etc., and the parameters can be adjusted.

[0029] The present invention further comprises two tensioners 700 and 700' mounted 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.

[0030] The present invention can achieve the following functions during the test process, including but not limited to: (1) The unbalanced force condition of wheel 3 (left and right brake wheels) was added; (2) Ability to control the friction force on wheel 3 (torque wheel); (3) Continuous braking (brake mechanism); (4) different loads of the frame 2 (counterweight mechanism); (5) The impact resistance of the hub 4 to be tested is tested by forward and reverse rotation (first driving device).

[0031] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made thereto by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A bicycle hub testing device, characterized in that: It includes a frame, a vehicle frame, a wheel, a hub to be tested, a torque 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 vehicle frame is pivotally connected to the machine frame; The wheel is mounted on the frame and includes a tire; The hub to be tested rotates synchronously with the wheel; The torque wheel is arranged below the wheel and in contact with the tire, and the driven wheel is mounted on its rotating shaft; The driving wheel is driven by the first driving device to realize rotation, and is drivingly connected to the hub to be tested through the rear hub test chain, or is drivingly connected to the driven wheel through the front hub test chain; The brake mechanism acts on the wheel to simulate braking; The counterweight mechanism acts on the frame to adjust the load.

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

3. The bicycle hub testing device according to claim 1, characterized in that: The first driving device is a stepping motor; the driving wheel is coaxially connected to the output shaft of the motor, and its circumference is provided with two circles of convex teeth for the rear hub test chain and the front hub test chain to engage respectively.

4. The bicycle hub testing device according to claim 1, characterized in that: The brake mechanism comprises a disc brake which rotates synchronously with the wheel, and a second driving device fixed on the frame, and the disc brake is transmission-connected to the second driving device via a brake line.

5. The bicycle hub testing device according to claim 4, characterized in that: The second driving device is a stepping motor.

6. The bicycle hub testing device according to claim 1, characterized in that: The counterweight mechanism comprises a bearing frame arranged above the rear end of the frame, and a plurality of counterweight weights; the bearing frame is provided with a positioning column for the counterweight weights to be sleeved.

7. The bicycle hub testing device according to claim 6, characterized in that: The counterweight mechanism further comprises a lifting handle mounted on the bearing frame; the lifting handle is threadedly connected to penetrate the bearing frame and abuts against the frame.

8. The bicycle hub testing device according to claim 1, characterized in that: It also includes two groups of cylinders, brake wheel brackets and brake wheels arranged on both sides of the frame; the cylinder is relatively fixed to the frame; the brake wheel bracket is arranged at the output end of the cylinder; the brake wheel is rotatably engaged with the brake wheel bracket, and the cylinder drives the brake wheel bracket and its brake wheel to contact or separate with the wheel at the side of the wheel.

9. The bicycle hub testing device according to claim 1, characterized in that: It also includes a plate covering the surface of the frame, and a display, a keyboard, a mouse and an alarm arranged on the frame.

10. The bicycle hub testing device according to 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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