A bicycle wheel hub spray water fatigue test device

Abstract

The utility model is specifically related to a bicycle wheel hub fatigue test equipment, including frame, the frame upside fixedly connected with supplementary promotion air cylinder, the piston rod of supplementary promotion air cylinder is fixedly connected with slide seat, the middle part of slide seat is provided with wheel drive assembly, wheel drive assembly includes drive motor, drive ratchet, chain and tension pulley, the lower part of slide seat is fixedly connected with and places the frame, the frame is detachable to the baffle and nozzle, the both sides of placing frame are provided with weight, the lower side of frame is provided with torsion test component, and torsion test component includes servo motor, connecting shaft, cylinder drum and torque sensor. The utility model has the advantages of as follows: can carry out automatic fatigue test to bicycle wheel hub, and adjusts the radial load to hub and carries out water spray test, and the suitability is wider.

Description

Technical Field

[0001] This utility model relates to the field of wheel testing equipment, specifically a bicycle wheel hub water spray fatigue testing device. Background Technology

[0002] The bicycle wheel hub (i.e., the central axle component of the wheel) is a key core component that bears the weight of the entire bicycle and transmits driving force. Its fatigue durability is directly related to the riding safety and service life of the bicycle.

[0003] In actual riding, the hub not only bears radial loads for a long time, but is also frequently exposed to complex environments such as rain. Moisture may penetrate into the hub, accelerating the wear and corrosion of the bearings, thereby changing its mechanical properties and eventually leading to fatigue failure.

[0004] Existing technologies for fatigue performance testing of bicycle wheel hubs face a series of problems, including the inability to effectively simulate real wet conditions, the lack of targeted testing equipment functions, and insufficient automation and precision in the testing process. Utility Model Content

[0005] The purpose of this invention is to provide a bicycle wheel hub water spray fatigue testing device, which can automatically perform fatigue testing on bicycle wheel hubs, adjust the radial load on the hub and perform water spray testing, and has wide applicability.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bicycle wheel hub water spray fatigue testing device, comprising a frame, an auxiliary lifting cylinder fixedly connected to the upper side of the frame, a slide fixedly connected to the piston rod of the auxiliary lifting cylinder, a wheel drive assembly disposed in the middle of the slide, the wheel drive assembly comprising a drive motor, a drive ratchet, a chain and a tension wheel, a placement frame fixedly connected to the lower part of the slide, a stop block and a nozzle detachably mounted on the placement frame, weights disposed on both sides of the placement frame, and a torque testing assembly disposed on the lower side of the frame, the torque testing assembly comprising a servo motor, a coupling, a roller and a torque sensor.

[0007] Furthermore, the frame is provided with an inner waterproof cover and an outer waterproof groove, and the wheel drive assembly and the roller are both located inside the inner waterproof cover.

[0008] Furthermore, a sewage pump is fixedly connected to the lower part of the inner waterproof cover.

[0009] Furthermore, a guide post is fixedly connected inside the frame, and the slide block is slidably connected to the guide post.

[0010] Furthermore, positioning rods are fixedly connected to both sides of the slide, and positioning holes are opened on the weight.

[0011] Furthermore, the lower part of the placement rack has a U-shaped groove, and the stop block is located at the opening of the U-shaped groove.

[0012] Furthermore, the upper side of the chain is sleeved on the drive ratchet, the drive motor is fixedly connected to the slide, the shaft of the drive motor is fixedly connected to the drive ratchet, the tension wheel is slidably connected to the slide, and the tension wheel is fixedly connected to the slide through a bolt assembly.

[0013] Furthermore, the drive motor's shaft passes through the drive ratchet and is fixedly connected to a gear disk, and a wheel speed sensor is fixedly connected to the slide block at a position corresponding to the gear disk.

[0014] Furthermore, both the servo motor and the torque sensor are fixedly connected to the frame. The output end of the servo motor is connected to the input end of the torque sensor via a coupling, and the output end of the torque sensor is connected to the roller.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: it can automatically perform fatigue testing on bicycle wheel hubs, adjust the radial load on the hubs, and perform water spray testing, making it widely applicable. Attached Figure Description

[0016] Figure 1 This is an isometric schematic diagram of the present invention.

[0017] Figure 2 This is a first-view schematic diagram of the internal structure of the inner waterproof cover of this utility model.

[0018] Figure 3 This is a second-view schematic diagram of the internal structure of the inner waterproof cover of this utility model.

[0019] Figure 4 This is a side view of the internal structure of the inner waterproof cover of this utility model.

[0020] Figure 5 This is a schematic diagram of the torque testing component of this utility model.

[0021] In the diagram: 1. Frame; 2. Auxiliary lifting cylinder; 3. Slide; 401. Drive motor; 402. Drive ratchet; 403. Chain; 404. Tensioner; 405. Gear disc; 5. Placement rack; 6. Stop block; 7. Weight; 801. Servo motor; 802. Coupling; 803. Roller; 804. Torque sensor; 9. Inner waterproof cover; 10. Outer waterproof groove; 11. Positioning rod. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example:

[0024] Please see Figure 1-5 A bicycle wheel hub water spray fatigue testing device includes a frame 1. An auxiliary lifting cylinder 2 is fixedly connected to the upper side of the frame 1. A slide 3 is fixedly connected to the piston rod of the auxiliary lifting cylinder 2. A wheel drive assembly is arranged in the middle of the slide 3. The wheel drive assembly includes a drive motor 401, a drive ratchet 402, a chain 403, and a tension wheel 404. A placement frame 5 is fixedly connected to the lower part of the slide 3. A stop block 6 and a nozzle are detachably mounted on the placement frame 5. The nozzle is positioned facing the wheel hub. Weights 7 are arranged on both sides of the placement frame 5. A torque testing assembly is arranged on the lower side of the frame 1. The torque testing assembly includes a servo motor 801, a coupling 802, a roller 803, and a torque sensor 804.

[0025] An inner waterproof cover 9 and an outer waterproof groove 10 are provided on the frame 1. The wheel drive assembly and the roller 803 are placed inside the inner waterproof cover 9, and the outer waterproof groove 10 is placed outside the inner waterproof cover 9. During the water spray test, this prevents water from splashing to the outside of the machine and collects the water.

[0026] A sewage pump is fixedly connected to the lower part of the inner waterproof cover 9. The water will eventually settle at the lower part of the inner waterproof cover 9 and be pumped out by the sewage pump. A guide column is fixedly connected inside the frame 1 to guide the lifting and lowering of the slide 3.

[0027] Positioning rods 11 are fixedly connected to both sides of the slide 3. Positioning holes are opened on the weights 7. The weights 7 can be placed on the slide 3 along the positioning rods 11 to achieve positioning. According to the test requirements, weights 7 of different weights can be added to adjust the radial load borne by the hub.

[0028] A U-shaped groove is provided at the bottom of the placement rack 5. When placing the wheel, it is placed on the placement rack 5 along the U-shaped groove. After the wheel is placed, it is limited by the stop block 6.

[0029] The upper side of the chain 403 is fitted onto the drive ratchet 402. The drive motor 401 is fixedly connected to the slide 3. The shaft of the drive motor 401 is fixedly connected to the drive ratchet 402. During testing, the upper end of the chain 403 is fitted onto the drive ratchet 402, and the lower end of the chain 403 is fitted onto the ratchet of the wheel. Then, the chain 403 is tensioned by the sliding tension wheel 404. The tension wheel 404 is fixedly connected to the slide 3 by a bolt assembly.

[0030] The drive motor 401 has a rotating shaft that passes through the drive ratchet 402 and is fixedly connected to the gear disk 405. The rotation of the drive motor 401 shaft will drive the drive ratchet 402 and the gear disk 405 to rotate, and the rotation speed is monitored by the wheel speed sensor.

[0031] Both the servo motor 801 and the torque sensor 804 are fixedly connected to the frame 1. The output end of the servo motor 801 is connected to the input end of the torque sensor 804 through the coupling 802. The servo motor 801 is used to drive the roller 803 to rotate, and the torque sensor 804 is used to detect the torque magnitude during rotation.

[0032] The working principle of this utility model is as follows: When this utility model is in use, the piston rod of the auxiliary lifting cylinder 2 retracts and lifts the slide block 3 upward. The upper end of the chain 403 is sleeved on the drive ratchet 402, and the lower end of the chain 403 is sleeved on the ratchet of the wheel. The wheel is placed on the placement frame 5 along the U-shaped groove. Then, the stop block 6 is installed to limit the wheel. Then, the tension wheel 404 is slid to tension the chain 403. The tension wheel 404 is fixedly connected to the slide block 3 through the bolt assembly. Before the test, according to the load to be applied to the hub, the required weight 7 is placed on the slide block 3.

[0033] During testing, the piston rod of the auxiliary lifting cylinder 2 extends, and the slide block 3 slides down, causing the tire of the wheel to press down on the roller 803. Then, the wheel is driven to rotate by the drive motor 401 and the drive ratchet 402. During the rotation, the servo motor 801 drives the roller 803 to rotate in the opposite direction relative to the wheel to conduct fatigue testing. During the test, water can be selectively sprayed onto the hub through a nozzle according to the test requirements. During the test, the torque value is detected by the torque sensor, and the wheel speed is monitored by the wheel speed sensor to calculate the wheel speed and obtain relevant experimental data.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bicycle wheel hub water spray fatigue testing device, characterized in that: The machine includes a frame (1), an auxiliary lifting cylinder (2) is fixedly connected to the upper side of the frame (1), a slide (3) is fixedly connected to the piston rod of the auxiliary lifting cylinder (2), a wheel drive assembly is provided in the middle of the slide (3), the wheel drive assembly includes a drive motor (401), a drive ratchet (402), a chain (403) and a tension wheel (404), a placement frame (5) is fixedly connected to the lower part of the slide (3), a stop block (6) and a nozzle are detachably mounted on the placement frame (5), weights (7) are provided on both sides of the placement frame (5), and a torque testing assembly is provided on the lower side of the frame (1), the torque testing assembly includes a servo motor (801), a coupling (802), a roller (803) and a torque sensor (804).

2. The bicycle wheel hub water spray fatigue testing device according to claim 1, characterized in that: The frame (1) is provided with an inner waterproof cover (9) and an outer waterproof groove (10), and the wheel drive assembly and the roller (803) are both located inside the inner waterproof cover (9).

3. The bicycle wheel hub water spray fatigue testing device according to claim 2, characterized in that: A sewage pump is fixedly connected to the lower part of the inner waterproof cover (9).

4. The bicycle wheel hub water spray fatigue testing device according to claim 1, characterized in that: The frame (1) is fixedly connected to a guide post, and the slide (3) is slidably connected to the guide post.

5. The bicycle wheel hub water spray fatigue testing device according to claim 1, characterized in that: Positioning rods (11) are fixedly connected to both sides of the slide (3), and positioning holes are opened on the weight (7).

6. The bicycle wheel hub water spray fatigue testing device according to claim 1, characterized in that: The placement rack (5) has a U-shaped groove at the bottom, and the stop block (6) is located at the opening of the U-shaped groove.

7. The bicycle wheel hub water spray fatigue testing device according to claim 1, characterized in that: The chain (403) is sleeved on the upper side of the drive ratchet (402), the drive motor (401) is fixedly connected to the slide (3), the shaft of the drive motor (401) is fixedly connected to the drive ratchet (402), the tension wheel (404) is slidably connected to the slide (3), and the tension wheel (404) is fixedly connected to the slide (3) by a bolt assembly.

8. The bicycle wheel hub water spray fatigue testing device according to claim 7, characterized in that: The drive motor (401) has a rotating shaft that passes through the drive ratchet (402) and is fixedly connected to a gear disk (405). A wheel speed sensor is fixedly connected to the slide (3) at a position corresponding to the gear disk (405).

9. The bicycle wheel hub water spray fatigue testing device according to claim 1, characterized in that: The servo motor (801) and torque sensor (804) are both fixedly connected to the frame (1). The output end of the servo motor (801) is connected to the input end of the torque sensor (804) through a coupling (802). The output end of the torque sensor (804) is connected to the roller (803).

Images