Weight overload machine for torque sensor of power-assisted center shaft of bicycle

Abstract

The utility model relates to the technical field of detection equipment, and discloses a bicycle power-assisted center shaft torsion sensor weight overload machine, which comprises a machine table, a support table and a main shaft rotating piece, the support table is arranged on the machine table, a telescopic device is arranged on the support table, an output shaft of the telescopic device is connected with a sensor, and the main shaft rotating piece is connected with the sensor. The sensor is further connected with an upper clamp used for clamping a product. The utility model effectively solves the problems that the application range of the detection equipment is limited, the detection accuracy and reliability are reduced and the detection cost is reduced because the conventional detection equipment mostly adopts a fixed overload point or a limited preset overload point for detection and cannot be flexibly adjusted according to the actual requirements of customers. And the traditional detection adopts a transversely placed bicycle power-assisted center shaft torsion sensor to carry out overload detection, but the mode has many limitations, is inconvenient for a user to quickly clamp, and is poor in stability during detection.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a weight overload machine for a torque sensor of a bicycle power-assisted middle shaft. Background Art

[0002] A bicycle power-assisted axle torque sensor is a key component in electric-assisted bicycles. It senses and measures the torque or torsion acting on the bicycle's axle. The sensor detects the rider's pedaling force, converts the torque or torsion into an electrical signal, and transmits it to the controller. The controller then controls the motor's output power based on the signal, achieving power assistance.

[0003] During the research, development, and manufacturing of bicycle power-assisted axle torque sensors, accurate testing of the static overload capacity of the axle torque sensor is a crucial step.

[0004] Traditional testing equipment and methods often suffer from complex setup, inconvenient operation, and insufficient detection accuracy, making them unable to meet the high requirements for bicycle power-assisted axle torque sensor testing. Furthermore, most testing methods use fixed or limited preset overload points, which cannot be flexibly adjusted to meet customer needs. This not only limits the scope of application of the testing equipment but also reduces the accuracy and reliability of the test. Furthermore, traditional testing uses a horizontally placed bicycle power-assisted axle torque sensor for overload detection, but this method has many limitations, is not convenient for users to quickly clamp, and has poor stability during testing. Utility Model Content

[0005] The purpose of the present utility model is to solve the problem that the existing detection equipment mentioned in the above background technology mostly adopts fixed overload points or limited preset overload points for detection, which cannot be flexibly adjusted according to the actual needs of customers. This not only limits the scope of application of the detection equipment, but also reduces the accuracy and reliability of the detection. In addition, the traditional detection adopts a horizontally placed bicycle power-assisted bottom shaft torque sensor for overload detection, but this method has many limitations, is not convenient for users to quickly clamp, and has poor stability during detection.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A bicycle power-assisted mid-axle torque sensor weight overload machine includes a machine platform, a support platform and a main shaft rotating part. The support platform is arranged on the machine platform, and a telescopic device is provided on the support platform. The output shaft of the telescopic device is connected to a sensor, and the sensor is further connected to an upper clamp for clamping a product. The main shaft rotating part is arranged on the machine platform, and a lower clamp for clamping the product is provided on the main shaft rotating part. A steering part and a counterweight part are also provided on the support platform. A pull rope is provided on the counterweight part, and the counterweight part is connected to the main shaft rotating part via the pull rope. The pull rope passes through the steering part to achieve a change in the direction of the pull rope.

[0008] Preferably, the output shaft of the telescopic device is connected to a connecting block 1, and the connecting block 1 is further connected to a movable plate, and the movable plate is connected to the sensor. A slide rail assembly is provided on the support platform, and the support platform is connected to the movable plate through the slide rail assembly. The movable plate can move up and down stably through the slide rail assembly, and the upper clamp is more stable when clamping and fixing the product.

[0009] Preferably, the spindle rotating part includes a shaft seat, which is installed on the machine table. A rotating block is provided on the shaft seat, and a connecting block 2 is provided on the rotating block. The lower clamp is provided on the connecting block 2, and the pull rope is connected to the rotating block. The lower clamp is a spline sleeve when in use.

[0010] Preferably, the machine is also provided with a driving member, which includes a motor and a gear assembly. The motor is provided with a fixed plate, which is connected to the shaft seat. The gear assembly is provided on the output shaft of the motor and the rotating block. The output shaft of the motor is connected to the rotating block through the gear assembly. When in use, the gear assembly consists of a gear ring and a gear. The gear ring is provided on the rotating block, and the gear is provided on the output shaft of the motor. The gear ring is meshed with the gear.

[0011] Preferably, a winding groove for winding the pull rope is provided on the rotating block, and the winding groove is annularly arranged on the outer surface of the rotating block. The rotating block can better wind the pull rope through the winding groove.

[0012] Preferably, the counterweight comprises a rod body, a weight is installed on the rod body, an auxiliary hole is opened on the weight, an auxiliary rod is provided in the guide hole, the auxiliary rod is arranged on the machine table, the upper end of the rod body is connected to the end of the pull rope away from the main shaft rotating part, and a specific torque is simulated and applied by the counterweight. Different torque or load conditions can be simulated by installing weights of different weights on the rod body.

[0013] Preferably, a lifting device is further provided on the machine body, and the lifting device is arranged below the counterweight. The output shaft of the lifting device corresponds to the lower end of the rod body. The counterweight can be supported by the lifting device, and the counterweight can be lifted to different heights for overload detection.

[0014] Preferably, the steering member includes a mounting seat, a pulley is provided on the mounting seat, a rotating sleeve is provided on the mounting seat, and the rotating sleeve is installed on the machine platform. The mounting seat can be rotated by rotating the sleeve. When the main shaft rotating member performs overload detection on the product in different directions, the pull rope can drive the mounting seat to rotate, thereby ensuring the consistency of the torque arm.

[0015] Preferably, a through hole is provided on the mounting seat, and the pull rope passes through the through hole and then passes through a pulley. The pulley is used to change the direction of the pull rope, and the pulley can more easily change the direction of the pull rope.

[0016] Preferably, a protective cover is provided on the machine platform, which covers the rotating block and the steering member. The protective cover can prevent the operator from contacting the rotating parts when the machine is running, thereby providing safety protection for the operator.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The utility model is provided with a main shaft rotating part for vertically placing the bicycle power-assisted middle shaft torque sensor, and can vertically clamp and fix the bicycle power-assisted middle shaft torque sensor on the lower clamp through the telescopic device and the upper clamp, so that the overload detection can be performed in a vertical state during the product detection, and the stability of the detection can be ensured while the user is convenient to place the product.

[0019] The counterweight can simulate and apply a specific torque, and by hanging weights of different weights on the rod, different torque or load conditions can be simulated;

[0020] By setting the steering member, the bicycle power-assisted center shaft torque sensor can perform overload detection in different directions, and the torque arm will not change due to different directions when performing overload detection. The consistency of the torque arm can be ensured, so that the bicycle power-assisted center shaft can be tested for overload in different directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2This is a view showing the connection between the main shaft rotating part of the utility model and the steering part and the counterweight part through a pull rope;

[0024] Figure 3 This is a view showing the connection between the lifting device and the support platform of the utility model;

[0025] Figure 4 This is a structural view of the main shaft rotating part of the utility model;

[0026] Figure 5 This is an exploded view of the main shaft rotating part of the utility model;

[0027] Figure 6 This is a structural view of the driving member of the utility model;

[0028] Figure 7 This is a structural view of the steering member of the present utility model;

[0029] Figure 8 The utility model is used for explosion of the counterweight structure.

[0030] Explanation of the figure numbers: 1. Machine platform; 2. Support platform; 3. Telescopic device; 31. Connecting block 1; 4. Moving plate; 5. Sensor; 6. Upper fixture; 7. Spindle rotating part; 71. Shaft seat; 72. Rotating block; 721. Winding groove; 73. Connecting block 2; 74. Lower fixture; 8. Driving part; 81. Gear assembly; 82. Motor; 9. Steering part; 91. Mounting seat; 92. Rotating sleeve; 93. Pulley; 10. Counterweight; 101. Rod body; 102. Weight; 103. Auxiliary rod; 11. Lifting device; 12. Pull rope; 13. Protective cover. DETAILED DESCRIPTION

[0031] The present invention is described in further detail below with reference to the accompanying drawings.

[0032] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention as defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0033] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate directions or positions are based on the directions or positional relationships shown in the accompanying drawings, which are merely simplified descriptions for the convenience of describing the present invention, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the above terms should not be understood as limitations on the present invention.

[0034] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity. Example

[0035] See also Figures 1-8 A bicycle power-assisted middle shaft torque sensor weight overload machine includes a machine platform 1, a support platform 2 and a main shaft rotating part 7. The support platform 2 is arranged on the machine platform 1, and a telescopic device 3 is provided on the support platform 2. The output shaft of the telescopic device 3 is connected with a sensor 5, and the sensor 5 is further connected with an upper clamp 6 for clamping the product. The main shaft rotating part 7 is arranged on the machine platform 1, and the main shaft rotating part 7 is provided with a lower clamp 74 for clamping the product. The support platform 2 is also provided with a steering part 9 and a counterweight part 10. The counterweight part 10 is provided with a pull rope 12. The counterweight part 10 is connected to the main shaft rotating part 7 through the pull rope 12. The pull rope 12 passes through the steering part 9 to realize the change of the direction of the pull rope 12. In actual use, the telescopic device 3 can be a cylinder or other equipment.

[0036] The output shaft of the telescopic device 3 is connected to a connecting block 31, and the connecting block 31 is further connected to a movable plate 4, which is connected to a sensor 5. A slide rail assembly is provided on the support platform 2, and the support platform 2 is connected to the movable plate 4 through the slide rail assembly. The movable plate 4 can move up and down stably through the slide rail assembly, and the upper clamp 6 is more stable when clamping and fixing the product.

[0037] The main shaft rotating part 7 includes a shaft seat 71, which is installed on the machine table 1. A rotating block 72 is provided on the shaft seat 71, and a connecting block 2 73 is provided on the rotating block 72. The lower clamp 74 is provided on the connecting block 2 73. The pull rope 12 is connected to the rotating block 72. The lower clamp 74 is a spline sleeve when in use.

[0038] The machine 1 is also provided with a driving part 8, which includes a motor 82 and a gear assembly 81. The motor 82 is provided with a fixed plate, which is connected to the shaft seat 71. The gear assembly 81 is provided on the output shaft of the motor 82 and the rotating block 72. The output shaft of the motor 82 is connected to the rotating block 72 through the gear assembly 81. The gear assembly 81 is composed of a ring gear and a gear when in use. The ring gear is provided on the rotating block 72, and the gear is provided on the output shaft of the motor 82. The ring gear and the gear are engaged. After each product test, the motor 82 can drive the upper fixture 6 to reset and find the zero point, ensuring that the next product can be better placed when placed on the lower fixture 74, and ensuring that the upper fixture 6 can better dock with the upper end of the product when docking with the product.

[0039] The rotating block 72 is provided with a winding groove 721 for winding the pull rope 12. The winding groove 721 is annularly arranged on the outer surface of the rotating block 72. The rotating block 72 can better wind the pull rope 12 through the winding groove 721.

[0040] The counterweight 10 includes a rod body 101, on which a weight 102 is installed. An auxiliary hole is opened on the weight 102, and an auxiliary rod 103 is provided in the guide hole. The auxiliary rod 103 is arranged on the machine 1. The upper end of the rod body 101 is connected to the end of the pull rope 12 away from the main shaft rotating part 7. The counterweight 10 simulates and applies a specific torque. By installing weights 102 of different weights on the rod body 101, different torque or load conditions can be simulated.

[0041] The machine body is also provided with a lifting device 11, which is arranged below the counterweight 10. The output shaft of the lifting device 11 corresponds to the lower end of the rod body 101. The counterweight 10 can be supported by the lifting device 11, and the counterweight 10 can be lifted to different heights for overload detection. The lifting device 11 can be a cylinder or other equipment when in use. After the motor 82 drives the lower clamp 75 to rotate to find the zero point, if the pull rope 12 is relatively loose at this time, the output shaft of the lifting device 11 can be moved downward, so that the counterweight 10 moves downward as a whole, thereby ensuring that the pull rope 12 can be in a taut state after the lower clamp 75 finds the zero point.

[0042] The steering member 9 includes a mounting seat 91, a pulley 93 is provided on the mounting seat 91, and a rotating sleeve 92 is provided on the mounting seat 91. The rotating sleeve 92 is installed on the machine 1. The mounting seat 91 can be rotated by rotating the sleeve 92. When the main shaft rotating member 7 performs overload detection on the product in different directions, the pull rope 12 can drive the mounting seat 91 to rotate, thereby ensuring the consistency of the torque arm.

[0043] The mounting seat 91 is provided with a through hole, and the pull rope 12 passes through the through hole and then passes through the pulley 93. The pulley 93 is used to change the direction of the pull rope 12. The pulley 93 can more easily change the direction of the pull rope 12.

[0044] A protective cover 13 is provided on the machine 1, which covers the rotating block 72 and the steering member 9. The protective cover 13 can prevent the operator from contacting the rotating parts when the machine is running, thereby providing safety protection for the operator.

[0045] When the present invention is in use, the product to be tested is placed on the lower clamp 74, the telescopic device 3 is started, and the output of the telescopic device 3 pushes the movable plate 4 downward, and then pushes the upper clamp 6 downward so that the upper end of the product is in the upper clamp 6, and the product is clamped and placed between the upper clamp 6 and the lower clamp 74. Then the lifting device 11 is started, and the output shaft of the lifting device 11 moves downward, and its output shaft is away from the rod body 101. After the support of the lifting device 11 is lost below the rod body 101, the rod body 101 is suspended and the rotating block 72 is pulled by the pull rope 12 to rotate. The rotating rotating block 72 drives the lower clamp 74 to rotate, and then the torque test is performed on the product on the lower clamp 74. The weight 102 on the rod body 101 simulates and applies a specific torque. By hanging weights 102 of different weights on the rod body 101, different torque or load conditions can be simulated. When the product is undergoing torque testing, the sensor 5 is used to detect the current torque value, thereby performing torque testing on the product.

[0046] When the product is loaded forward and backward, the output shaft on the lifting device 11 contacts the lower end of the rod body 101, thereby supporting the weight 102 as a whole, and the motor 82 is started. The output shaft of the motor 82 drives the gear assembly 81 to run, and then drives the rotating block 72 to rotate. When the rotating block 72 rotates in different directions, it rotates to a state where the pull rope 12 is wound and tightened. When the rotating block 72 winds the pull rope 12 in different directions, the pull rope 12 will drive the pulley 93 to rotate in different directions, so that the pulley 93 and the pull rope 12 maintain the same direction. When realizing forward and reverse loading, the torque arm will not change due to different directions, ensuring the consistency of the torque arm, so that the bicycle power-assisted center axis can be tested for overload in forward and reverse directions.

[0047] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended only as examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A bicycle power-assisted axle torque sensor weight overload machine, characterized in that: It includes a machine (1); A support platform (2) is provided on the machine platform (1), wherein a telescopic device (3) is provided on the support platform (2), a sensor (5) is connected to the output shaft of the telescopic device (3), and an upper clamp (6) for clamping the product is further connected to the sensor (5); A main shaft rotating member (7) is provided on the machine platform (1), and a lower clamp (74) for clamping the product is provided on the main shaft rotating member (7); The support platform (2) is further provided with a steering member (9) and a counterweight member (10). The counterweight member (10) is provided with a pull rope (12). The counterweight member (10) is connected to the main shaft rotating member (7) via the pull rope (12). The pull rope (12) passes through the steering member (9) to achieve a change in the direction of the pull rope (12).

2. A bicycle power-assisted axle torque sensor weight overload machine according to claim 1, characterized in that: The output shaft of the telescopic device (3) is connected to a connecting block 1 (31), and the connecting block 1 (31) is further connected to a movable plate (4), and the movable plate (4) is connected to a sensor (5). The support platform (2) is provided with a slide rail assembly, and the support platform (2) is connected to the movable plate (4) via the slide rail assembly.

3. A bicycle power-assisted axle torque sensor weight overload machine according to claim 2, characterized in that: The spindle rotating member (7) includes a shaft seat (71), the shaft seat (71) is installed on the machine platform (1), a rotating block (72) is provided on the shaft seat (71), a connecting block (73) is provided on the rotating block (72), the lower clamp (74) is provided on the connecting block (73), and the pull rope (12) is connected to the rotating block (72).

4. A bicycle power-assisted axle torque sensor weight overload machine according to claim 3, characterized in that: The machine (1) is further provided with a driving member (8), the driving member (8) comprising a motor (82) and a gear assembly (81), the motor (82) being provided with a fixing plate connected to the shaft seat (71), the gear assembly (81) being provided on the output shaft of the motor (82) and the rotating block (72), the output shaft of the motor (82) being in transmission connection with the rotating block (72) via the gear assembly (81).

5. A bicycle power-assisted axle torque sensor weight overload machine according to claim 4, characterized in that: The rotating block (72) is provided with a winding groove (721) for winding the pull rope (12), and the winding groove (721) is annularly arranged on the outer surface of the rotating block (72).

6. A bicycle power-assisted axle torque sensor weight overload machine according to claim 5, characterized in that: The counterweight (10) comprises a rod body (101), a weight (102) is mounted on the rod body (101), an auxiliary hole is provided on the weight (102), an auxiliary rod (103) is provided in the auxiliary hole, the auxiliary rod (103) is provided on the machine (1), and the upper end of the rod body (101) is connected to an end of the pull rope (12) away from the main shaft rotating member (7).

7. A bicycle power-assisted axle torque sensor weight overload machine according to claim 6, characterized in that: The machine (1) is further provided with a lifting device (11), and the lifting device (11) is provided below the counterweight (10), and the output shaft of the lifting device (11) corresponds to the lower end of the rod body (101).

8. A bicycle power-assisted axle torque sensor weight overload machine according to claim 7, characterized in that: The steering member (9) includes a mounting seat (91), a pulley (93) is provided on the mounting seat (91), a rotating shaft sleeve (92) is provided on the mounting seat (91), and the rotating shaft sleeve (92) is mounted on the machine platform (1).

9. A bicycle power-assisted axle torque sensor weight overload machine according to claim 8, characterized in that: The mounting seat (91) is provided with a through hole, and the pull rope (12) passes through the through hole and then passes through the pulley (93), and the pulley (93) is used to change the direction of the pull rope (12).

10. A bicycle power-assisted axle torque sensor weight overload machine according to claim 9, characterized in that: A protective cover (13) is provided on the machine platform (1), and the protective cover (13) covers the rotating block (72) and the steering member (9).

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