Life detector for bicycle belt

Abstract

The utility model discloses a bicycle belt life detector which comprises a base and a power mechanism, a first wheel carrier and a second wheel carrier are fixedly installed on the base, a first belt pulley is rotatably installed on the first wheel carrier, a second belt pulley is rotatably installed on the second wheel carrier, and a belt to be detected is installed between the first belt pulley and the second belt pulley in a transmission mode. A tensioning mechanism is installed between the first wheel carrier and the second wheel carrier and comprises a tensioning wheel which is installed in a rotating mode, the tensioning wheel makes contact with the belt face of a belt to be detected to achieve the tensioning effect, a flywheel is fixedly connected to the first belt wheel, and the power mechanism is installed on the base and is in transmission connection with the flywheel. A belt to be detected is installed through the belt pulley, speed change adjustment is achieved through the flywheel structure, and the bicycle belt life detection device can simulate different working conditions when the bicycle belt runs so as to meet the requirement for life detection of the bicycle belt.

Description

Technical Field

[0001] This utility model relates to the field of belt quality inspection technology, and more specifically, to a life tester for bicycle belts. Background Technology

[0002] Belt drives offer a range of advantages, including low noise, smooth operation, easy maintenance, and high durability. With the development of bicycle technology, belt drives are increasingly being used in bicycle equipment. Bicycle-specific belts have high production requirements, necessitating sampling inspection of each batch before shipment. Belt lifespan is one of the main quality control items for bicycle-specific belts. This lifespan test needs to be conducted under simulated bicycle operating conditions (long-term use and variable speed operation). Therefore, companies need to design dedicated bicycle belt lifespan testing equipment for quality control, leading to this case study. Utility Model Content

[0003] The purpose of this invention is to address the needs of the prior art and provide a bicycle belt life tester. This invention has a reasonable layout, uses pulleys to install the belt to be tested, and uses a flywheel structure to achieve speed adjustment. This invention can simulate different operating conditions of a bicycle belt to meet the needs of bicycle belt life testing.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A bicycle belt life tester includes a base and a power mechanism. A first wheel frame and a second wheel frame are fixedly mounted on the base. A first pulley is rotatably mounted on the first wheel frame, and a second pulley is rotatably mounted on the second wheel frame. A belt to be tested is driven between the first pulley and the second pulley. A tensioning mechanism is installed between the first wheel frame and the second wheel frame. The tensioning mechanism includes a rotatably mounted tensioning wheel that contacts the surface of the belt to be tested to create a tensioning effect. A flywheel is fixedly connected to the first pulley. The power mechanism is mounted on the base and is drivenly connected to the flywheel.

[0006] Furthermore, a load cell is mounted on the base, and the output end of the load cell is connected to the second pulley.

[0007] Furthermore, the power mechanism includes a drive sprocket and a chain, the drive sprocket is rotatably mounted, and the drive sprocket is connected to the flywheel via a chain drive.

[0008] Furthermore, the power mechanism also includes a power base and a power assembly, the power assembly being fixedly mounted on the power base, and the drive sprocket being connected to the output end of the power assembly.

[0009] Furthermore, the base adopts an I-shaped cross section, and two parallel long slots are opened on the upper wing plate of the base. The long slots are opened along the length direction of the base. Several positioning bolts are connected to the bottom of the power seat. The positioning bolts are matched and installed in the long slots. The power seat can be fixed by installing nuts on the positioning bolts.

[0010] Furthermore, the flywheel is concentrically connected to the first pulley, and the flywheel includes several passive sprockets of different diameters, which are concentrically connected, and the chain is connected to one of the passive sprockets.

[0011] Furthermore, the tensioning mechanism includes a third wheel frame, which is fixedly installed on the base. The third wheel frame is equipped with a tension adjustment component, which is installed below the tension wheel and is connected to the tension wheel via a drive.

[0012] Furthermore, the third wheel frame is fixedly equipped with a guide sleeve, the tensioning mechanism also includes a wheel seat, a tensioning wheel is rotatably mounted on the top of the wheel seat, a vertical shaft is fixedly connected to the bottom of the wheel seat, the vertical shaft is fitted into the guide sleeve, the vertical shaft passes through the guide sleeve, the tension adjustment assembly includes a vertical plate and an adjustment screw, the adjustment screw is threaded onto the vertical plate, the top of the adjustment screw extends to contact the bottom of the vertical shaft, a rotating head is connected to the bottom of the adjustment screw, and the tensioning wheel contacts the outer surface of the belt to be tested.

[0013] Furthermore, a label is affixed to the outer surface of the belt to be tested, and a counter is installed on the first wheel frame, with the counter positioned to face the movement trajectory line of the label.

[0014] The beneficial effects of this utility model are:

[0015] This invention uses two pulleys to mount the belt under test and a tensioning pulley to effectively tension the belt. This invention enables the belt to rotate for a long time to meet the basic requirements of life testing. The first pulley of this invention is connected to a multi-sprocket flywheel. By switching different sprockets, the belt speed can be adjusted. This invention can simulate speed change to test the life of the belt. Attached Figure Description

[0016] Figure 1 This is a front view of a bicycle belt life tester according to this embodiment;

[0017] Figure 2 This is a top view of a bicycle belt life tester according to this embodiment;

[0018] Figure 3 This is a front view of the tensioning mechanism in this embodiment.

[0019] Reference numerals in the attached drawings: base 1, long groove 11, first wheel frame 2, first pulley 21, flywheel 22, driven sprocket 221, counter 23, second wheel frame 3, second pulley 31, load cell 32, power mechanism 4, driving sprocket 41, chain 42, power seat 43, positioning bolt 431, power assembly 44, tensioning mechanism 5, third wheel frame 51, tensioning wheel 52, tension adjustment assembly 53, upright plate 531, adjusting screw 532, rotating head 533, wheel seat 54, vertical shaft 541, guide sleeve 55, belt to be tested 100, label 101. Detailed Implementation

[0020] 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.

[0021] like Figures 1-3 The bicycle belt life tester shown includes a base 1 and a power mechanism 4. The base 1 can be fixed to the instrument mounting platform by bolts. A first wheel frame 2 and a second wheel frame 3 are fixedly mounted on the base 1. A first pulley 21 is rotatably mounted on the first wheel frame 2, and a second pulley 31 is rotatably mounted on the second wheel frame 3. A belt 100 to be tested is driven between the first pulley 21 and the second pulley 31. A tensioning mechanism 5 is installed between the first wheel frame 2 and the second wheel frame 3. The tensioning mechanism 5 includes a rotatably mounted tensioning wheel 52, which contacts the surface of the belt 100 to form a tensioning mechanism. To assess the tension of the belt 100 under test, a flywheel 22 is fixedly connected to the first pulley 21. The flywheel 22 is concentrically connected to the first pulley 21, and the first pulley 21 and the flywheel 22 can rotate synchronously. The power mechanism 4 is mounted on the base 1 and is connected to the flywheel 22 via a transmission mechanism. The power mechanism 4 drives the first pulley 21 and the second pulley 31 by driving the flywheel 22 to rotate, thereby achieving the cyclic transmission of the belt 100 under test. The belt 100 under test is a bicycle-specific belt. When using constant speed testing, the single testing time of the belt 100 under test is more than 10 hours.

[0022] A bicycle experiences resistance during movement, and this resistance is one of the factors affecting the lifespan of the belt. To simulate this resistance, such as... Figure 2As shown, the present invention has a load device 32 installed on the base 1. The load device 32 is a commercially available torque loader. This device is existing technology, and its specific structure will not be described in detail. The output end of the load device 32 is connected to the second pulley 31. The load device 32 can apply torque to the rotating second pulley 31 to form rotational resistance, thus simulating the riding resistance of a bicycle to ensure that more accurate test data is obtained.

[0023] like Figure 1 As shown, the power mechanism 4 includes a drive sprocket 41 and a chain 42. The drive sprocket 41 is rotatably mounted and is connected to the flywheel 22 via the chain 42. After the drive sprocket 41 rotates, it drives the flywheel 22 and the first pulley 21 through the chain 42, ultimately enabling the belt 100 under test to circulate. The power mechanism 4 also includes a power base 43 and a power assembly 44. The power assembly 44 is fixedly mounted on the power base 43. The power assembly 44 uses a conventional motor and reducer combination. The output shaft of the motor is connected to the input shaft of the reducer. The drive sprocket 41 is connected to the output end of the power assembly 44, which is connected to the output shaft of the reducer. When the motor starts, it can drive the drive sprocket 41 to rotate.

[0024] In the bicycle industry, multi-speed bicycles are quite common products. Therefore, the quality inspection of bicycle belts needs to consider factors related to shifting and riding, such as... Figure 1 and Figure 2 As shown, the flywheel 22 of this utility model is designed to include several passive sprockets 221 of different diameters. The several passive sprockets 221 are concentrically connected. Each time, the chain 42 is selected to connect to one of the passive sprockets 221. By changing the connection of different passive sprockets 221, the rotational speed of the belt under test 100 is switched. When using variable speed testing, the single test time of the belt under test 100 is set to 4 hours for each speed. At that time, the staff will manually change the chain 42 to connect to different passive sprockets 221.

[0025] After replacing chain 42 to connect to different driven sprockets 221, the power mechanism 4 also needs to be adjusted accordingly to match the existing chain 42 length. For this purpose, such as... Figure 1 and Figure 2As shown, the base 1 adopts an I-shaped cross-section design. Two parallel long slots 11 are opened on the upper wing plate of the base 1. The long slots 11 are opened along the length direction of the base 1. Several positioning bolts 431 are connected to the bottom of the power seat 43. The positioning bolts 431 are matched and installed in the long slots 11. When the power seat 43 is moved and adjusted, the positioning bolts 431 slide in the long slots 11. The length of the positioning bolts 431 is greater than the thickness of the upper wing plate of the base 1. After the power seat 43 is adjusted to the position, it can be fixed by installing nuts on the positioning bolts 431. The I-shaped cross-section design of the base 1 is to facilitate the installation of nuts on the positioning bolts 431. After each speed change adjustment, the worker manually changes the chain 42 to connect different passive sprockets 221, and then manually adjusts the installation position of the power mechanism 4 to adapt.

[0026] like Figure 3 As shown, the tensioning mechanism 5 includes a third wheel frame 51, which is fixedly installed on the base 1. A tension adjustment component 53 is installed on the third wheel frame 51, located below the tension wheel 52. The tension adjustment component 53 is connected to the tension wheel 52 via a transmission connection. The installation position of the tension wheel 52 can be adjusted via the tension adjustment component 53 to adjust the tension of the belt 100 to be tested. A guide sleeve 55 is fixedly installed on the third wheel frame 51. The tensioning mechanism 5 also includes a wheel seat 54, which is used to install the tension wheel 52. The tension wheel 52 is rotatably installed on top of the wheel seat 54. A vertical shaft 541 is fixedly connected below the wheel seat 54 and is fitted into the guide sleeve 55. The vertical shaft 541 passes through the guide sleeve 55. The vertical shaft 541 is installed vertically through the shaft, allowing the wheel seat 54 and the third wheel frame 51 to move vertically up and down. The tension adjustment assembly 53 includes a vertical plate 531 and an adjusting screw 532. The vertical plate 531 is fixedly connected to the third wheel frame 51, and the adjusting screw 532 is threaded onto the vertical plate 531. The top of the adjusting screw 532 extends to contact the bottom of the vertical shaft 541, and a rotating head 533 is connected to the bottom of the adjusting screw 532. By turning the rotating head 533, the adjusting screw 532 can be rotated. In this invention, the tension wheel 52 is designed to contact the outer surface of the belt 100 to be tested, that is, to use external pressure tensioning. When the adjusting screw 532 is turned upward, it can drive the tension wheel 52 to move upward, and the tension wheel 52 increases the pressure on the belt 100 to be tested.

[0027] Belt life testing can be done not only by measuring time, but also by measuring the number of rotations. Therefore, for example... Figure 2 As shown, this utility model has a label 101 affixed to the outer surface of the belt 100 to be tested, such as... Figure 1As shown, the present invention has a counter 23 installed on the first wheel frame 2. The label 101 rotates together with the belt 100 to be tested. The counter 23 is installed facing the movement trajectory line of the label 101. Each time the label 101 passes through the counter 23, it is recorded as one revolution. The number of revolutions is detected by collecting the reading of the counter 23.

[0028] This invention can simulate the operating conditions of a bicycle belt during movement, such as resistance, continuous operation, and speed change. This invention can well meet the needs of enterprises for life testing of bicycle belts.

[0029] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A life detector for a bicycle belt, characterized by, The utility model provides a belt tensioning device, including base (1) and power mechanism (4), first wheel frame (2) and second wheel frame (3) are fixedly installed on base (1), first pulley (21) is rotatably installed on first wheel frame (2), second pulley (31) is rotatably installed on second wheel frame (3), and transmission is installed between first pulley (21) and second pulley (31) with the belt (100) to be measured, and tensioning mechanism (5) is installed between first wheel frame (2) and second wheel frame (3), tensioning mechanism (5) includes rotatably installed tensioning pulley (52), and tensioning pulley (52) contacts the belt (100) to be measured and forms the tensioning effect, and flywheel (22) is fixedly connected on first pulley (21), power mechanism (4) is installed to base (1), and power mechanism (4) is transmission connected with flywheel (22).

2. The life detector for a belt of a bicycle according to claim 1, wherein Load ware (32) is installed on base (1), and the output end of load ware (32) is connected with second pulley (31).

3. The belt life detector for a bicycle according to claim 1, wherein Power mechanism (4) includes driving sprocket (41) and chain (42), and driving sprocket (41) is rotatably installed, and driving sprocket (41) is transmission connected with flywheel (22) through chain (42).

4. The belt life detector for a bicycle according to claim 3, wherein Power mechanism (4) further includes power base (43) and power assembly (44), power assembly (44) is fixedly installed on power base (43), and driving sprocket (41) is connected to the output end of power assembly (44).

5. The belt life detector for a bicycle according to claim 4, wherein Base (1) adopts I-shaped section, two parallel long grooves (11) are formed in the upper wing plate of base (1), long groove (11) is formed along the length direction of base (1), power base (43) is connected with a plurality of positioning bolts (431), positioning bolt (431) is matched and installed in long groove (11), and power base (43) can be fixed by installing nut on positioning bolt (431).

6. The belt life detector for a bicycle according to claim 3, wherein Flywheel (22) is concentrically connected with first pulley (21), flywheel (22) includes a plurality of passive sprockets (221) of different diameters, a plurality of passive sprockets (221) are concentrically connected, and chain (42) is connected with one of passive sprockets (221).

7. The belt life detector for a bicycle according to claim 1, wherein Tensioning mechanism (5) includes third wheel frame (51), third wheel frame (51) is fixedly installed on base (1), third wheel frame (51) is installed with tensioning adjusting assembly (53), tensioning adjusting assembly (53) is installed below tensioning pulley (52), and tensioning adjusting assembly (53) is transmission connected with tensioning pulley (52).

8. The belt life detector for a bicycle according to claim 7, wherein The third wheel frame (51) is fixedly installed with a guide sleeve (55), the tensioning mechanism (5) further comprises a wheel seat (54), the wheel seat (54) is rotatably installed with a tensioning wheel (52) above, the wheel seat (54) is fixedly connected with a vertical shaft (541) below, the vertical shaft (541) is matched and inserted into the guide sleeve (55), the vertical shaft (541) is installed through the guide sleeve (55), the tensioning adjusting assembly (53) comprises a vertical plate (531) and an adjusting screw rod (532), the adjusting screw rod (532) is screwedly installed on the vertical plate (531), the adjusting screw rod (532) is extended to contact the bottom of the vertical shaft (541) at the top, the bottom of the adjusting screw rod (532) is connected with a rotating head (533), and the tensioning wheel (52) contacts the outer belt surface of the belt (100) to be tested.

9. The belt life detector for a bicycle according to claim 1, wherein A label (101) is pasted on the outer belt surface of the belt (100) to be tested, and a counter (23) is installed on the first wheel frame (2) and is installed towards the movement track line of the label (101).

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