Test board for electric bicycle and balance car

Abstract

The utility model discloses a test board for an electric bicycle and a balance car, and relates to the technical field of vehicle testing. The test board comprises a machine table, a front wheel roller, a rear wheel roller, a handlebar fixing mechanism, a pressing mechanism and a middle shaft driving device, a rack is arranged on the machine table; the front wheel roller and the rear wheel roller are arranged in the machine table in parallel, the side walls of the rollers extend out of the top of the machine table, a rotating shaft of the front wheel roller is connected with a front roller driving motor and a front wheel torque sensor, a rotating shaft of the rear wheel roller is connected with a rear roller driving motor and a rear wheel torque sensor, and a moving module is arranged below the rear wheel roller. The rear wheel roller can be moved back and forth; the handlebar fixing mechanism is arranged on the front side of the rack and is used for fixing a handlebar of the tested vehicle; the pressing mechanism is arranged at the top of the rack and is used for pressing a saddle of the tested vehicle; and the middle shaft driving device is arranged on the machine table and is connected with a crank of the tested vehicle. The test bench can be compatible with front-wheel-drive and rear-wheel-drive vehicle bodies for testing.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle testing, in particular to a test bench for an electric bicycle and a balance vehicle. Background Art

[0002] Safety testing and performance testing are important links in the design and manufacturing process of electric bicycles, balance bikes, etc. Existing test platforms can usually only be used for a certain type of vehicle body. For example, Chinese patent document CN205861355U discloses an electric bicycle performance test platform. The test platform includes a rear wheel drive device, a front wheel support device, a seat clamping device, a middle axis drive device and a front wheel fixing frame, wherein: the rear wheel drive device includes a first rear axle roller and a second rear axle roller, the first rear axle roller is connected to the first motor, and the second rear axle roller is connected to the second motor; the front wheel support device includes a first front axle roller and a second front axle roller; the front wheel fixing frame is used to clamp and fix the front wheel axle of the vehicle body. When the test platform is in use, the front wheel of the vehicle body to be tested is placed between the two front axle rollers, and the rear wheel is placed between the two rear axle rollers, and the front wheel axle of the vehicle body is clamped and fixed by the front wheel fixing frame. Since the test platform only has motors on the two rear axle rollers, and the front wheels of the tested vehicle are clamped and fixed by the front wheel fixing frame when in use, although the test platform can perform relevant performance tests on rear-wheel drive vehicles, it cannot perform relevant performance tests on front-wheel drive vehicles, and its compatibility is poor. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an electric bicycle and a balance vehicle test bench, which can be compatible with front-wheel drive and rear-wheel drive vehicle bodies for testing.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A test bench for electric bicycles and balancing vehicles comprises a machine platform, a front wheel roller, a rear wheel roller, a handlebar fixing mechanism, a pressing mechanism and a middle shaft driving device; a frame is arranged on the machine platform; the front wheel roller and the rear wheel roller are arranged in parallel in the machine platform and the side walls of the rollers extend out of the top of the machine platform, the rotating shaft of the front wheel roller is connected with a front roller driving motor and a front wheel torque sensor, the rotating shaft of the rear wheel roller is connected with a rear roller driving motor and a rear wheel torque sensor, and a moving module is arranged under the rear wheel roller for moving the rear wheel roller forward and backward; the handlebar fixing mechanism is arranged on the front side of the frame and is used to fix the handlebar of the vehicle under test; the pressing mechanism is arranged on the top of the frame and is used to press the saddle of the vehicle under test; the middle shaft driving device is arranged on the machine platform and is connected with the crank of the vehicle under test.

[0006] In some embodiments, the handlebar fixing mechanism includes a fixed shaft, a bearing seat, a connecting rod, a guide light shaft, a connecting plate and a clamp. The fixed shaft is transversely fixed between the upper front sides of the frame. The bearing seat is rotatably connected to the fixed shaft. One end of the connecting rod is fixedly connected to the bearing seat, and the other end is provided with a connecting block. A first linear bearing is installed on the connecting block. The guide light shaft is parallel to the connecting rod. One end of the guide light shaft passes through the first linear bearing, and the other end is fixedly connected to the connecting plate. Two sliding members are provided on the connecting plate. The sliding members can slide along the connecting plate, and the clamp is installed on the sliding members.

[0007] In some embodiments, the pressing mechanism includes a sliding frame and a pressing assembly; the sliding frame is slidably disposed on the top of the frame, and the pressing assembly is vertically disposed below the sliding frame.

[0008] Compared with the prior art, the present invention achieves at least the following beneficial effects:

[0009] The test bench is provided with a front wheel roller and a rear wheel roller, and a front wheel roller driving motor and a front wheel torque sensor are arranged on the front wheel roller, and a rear wheel roller driving motor and a rear wheel torque sensor are arranged on the rear wheel roller. The front wheel torque sensor and the rear wheel torque sensor can respectively measure the torque and rotation speed of the front wheel roller and the rear wheel roller. When the performance parameter of the vehicle is tested, for example, the maximum speed of the vehicle is measured, the utility model can measure the maximum speed of the vehicle by the rotation speed of the front wheel roller for a front-wheel drive vehicle body, and can measure the maximum speed of the vehicle by the rotation speed of the rear wheel roller for a rear-wheel drive vehicle body, and can be compatible with front-wheel drive and rear-wheel drive vehicle bodies for testing; in addition, the handlebar of the vehicle under test can be fixed by the handlebar fixing mechanism on the frame, and the saddle of the vehicle under test can be pressed down by the pressing mechanism on the frame, so that the vehicle under test can be fixed during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] One or more embodiments of the present invention will now be described by way of example only with reference to the accompanying drawings, in which:

[0011] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0012] Figure 2 for Figure 1 A top view of an embodiment;

[0013] Figure 3 for Figure 1 A schematic diagram of the internal structure of the machine of the embodiment;

[0014] Figure 4 for Figure 1 A schematic structural diagram of a handlebar fixing mechanism of an embodiment;

[0015] Figure 5 for Figure 1A schematic structural diagram of the pressing mechanism of the embodiment.

[0016] The numbers in the figure are: 1, machine; 2, front wheel roller; 3, rear wheel roller; 4, handlebar fixing mechanism; 41, fixed shaft; 42, bearing seat; 43, connecting rod; 431, connecting block; 44, guide optical axis; 45, connecting plate; 451, sliding member; 46, clamp; 5, pressing mechanism; 51, sliding frame; 511, base plate; 512, supporting plate; 513, roller; 514, adjusting handle; 52, pressing assembly; 521, pressing cylinder; 522, linear optical axis; 523, pressure sensor; 524, pressing block; 5241, side plate; 6, middle axis driving device; 61, middle axis driving Motor; 62, crank connecting shaft; 7, frame; 71, push rod; 8, front roller drive motor; 9, front wheel torque sensor; 10, rear roller drive motor; 20, rear wheel torque sensor; 30, fixed plate; 40, fixed block; 60, linear guide rail; 70, movable base plate; 80, adjustment assembly; 801, lead screw; 802, lead screw nut; 803, adjustment handwheel; 90, guide assembly; 901, linear bearing seat; 902, guide shaft; 100, control cabinet; 101, DC regulated power supply; 200, first linear bearing; 300, second linear bearing; 400, vehicle under test. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the exemplary embodiments in the accompanying drawings. However, it should be understood that the present application can be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. These embodiments are provided here to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.

[0018] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "several" and "multiple" mean two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features directly contacting, or it can include the first and second features not being in direct contact but contacting through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0019] like Figures 1 to 5 As shown, in one embodiment of the utility model, the electric bicycle and balance vehicle test bench includes a machine 1, a front wheel roller 2, a rear wheel roller 3, a handlebar fixing mechanism 4, a pressing mechanism 5 and a middle shaft driving device 6.

[0020] A frame 7 is provided on the platform 1 , and an auxiliary slope for facilitating the transportation of the vehicle 400 to be tested is also provided on one side of the platform 1 .

[0021] The front wheel roller 2 and the rear wheel roller 3 are arranged in parallel in the machine 1 and the side walls of the rollers extend out of the top of the machine 1. The front wheel roller 2 and the rear wheel roller 3 are respectively used to support and drive the front wheel and the rear wheel of the tested vehicle 400 to rotate; the rotating shaft of the front wheel roller 2 is connected to the front roller drive motor 8 and the front wheel torque sensor 9, and the rotating shaft of the rear wheel roller 3 is connected to the rear roller drive motor 10 and the rear wheel torque sensor 20. The front-wheel drive vehicle can measure the rotation speed of the front wheel roller 2 through the front wheel torque sensor 9, so as to measure the maximum speed, and the rear-wheel drive vehicle can measure the rotation speed of the rear wheel roller 3 through the rear wheel torque sensor 20, so as to measure the maximum speed; a moving module is arranged under the rear wheel roller 3, which is used to move the rear wheel roller 3 forward and backward, and can be applied to the testing of vehicles with different wheelbases; the front roller drive motor 8 and the rear roller drive motor 10 are servo motors, and do not carry a reducer, so as to avoid the reducer having a certain torque, which affects the detection of smaller torque by the front wheel torque sensor 9 and the rear wheel torque sensor 20.

[0022] The handlebar fixing mechanism 4 is arranged on the front side of the frame 7, which is used to fix the handlebar of the vehicle 400 under test; the pressing mechanism 5 is arranged on the top of the frame 7, which is used to press the saddle of the vehicle 400 under test; the middle shaft driving device 6 is arranged on the machine platform 1, which is connected to the crank of the vehicle 400 under test.

[0023] Optionally, the handlebar fixing mechanism 4 includes a fixed shaft 41, a bearing seat 42, a connecting rod 43, a guide light shaft 44, a connecting plate 45 and a clamp 46. The fixed shaft 41 is transversely fixed between the upper front sides of the frame 7. The bearing seat 42 is rotatably connected to the fixed shaft 41. One end of the connecting rod 43 is fixedly connected to the bearing seat 42, and the other end is provided with a connecting block 431. A first linear bearing 200 is installed on the connecting block 431. The guide light shaft 44 is parallel to the connecting rod 43. One end of the guide light shaft 44 passes through the first linear bearing 200, and the other end is fixedly connected to the connecting plate 45. Two sliding members 451 are provided on the connecting plate 45. The sliding members 451 can slide along the connecting plate 45. The clamp 46 is installed on the sliding member 451. The bearing seat 42 can rotate around the axis of the fixed shaft 41, so that the angle of the connecting rod 43 can be adjusted, the guide light axis 44 can move linearly along the first linear bearing 200, and the sliding member 451 can slide along the length direction of the connecting plate 45, so that the handlebar fixing mechanism 4 can be adaptively adjusted according to the handlebar position of the vehicle 400 being tested.

[0024] Optionally, the pressing mechanism 5 includes a sliding frame 51 and a pressing assembly 52 ; the sliding frame 51 is slidably disposed on the top of the frame 7 , and the pressing assembly 52 is vertically disposed below the sliding frame 51 .

[0025] Furthermore, a push rod 71 arranged along the wheelbase direction of the vehicle 400 to be tested is fixedly connected to the top of the frame 7; the sliding frame 51 is sleeved on the push rod 71, and the sliding frame 51 includes a base plate 511, a support plate 512, a roller 513 and an adjustment handle 514, the support plate 512 is vertically fixed on both sides of the base plate 511, and the roller 513 is rotatably connected between the tops of the support plates 512 on both sides, and the roller 513 can roll along the push rod 71, and the adjustment handle 514 is threadedly connected below the base plate 511, and its connection end is used to abut against the bottom of the push rod 71. The adjustment handle 514 is used to adjust the tightness of the sliding frame 51, and the sliding frame 51 can slide forward and backward along the push rod 71 through the roller 513, and can be adaptively adjusted according to the saddle position of the vehicle 400 to be tested.

[0026] Furthermore, the pressing assembly 52 includes a pressing cylinder 521, a linear optical axis 522, a pressure sensor 523 and a pressing block 524. The rodless side end cover of the pressing cylinder 521 is fixedly connected to the base plate 511, the rod side end cover is provided with a fixing plate 30, and second linear bearings 300 are installed on both sides of the fixing plate 30. The linear optical axis 522 passes through the second linear bearing 300 and is provided with a fixing block 40. The pressure sensor 523 is installed on the fixing block 40, and the force-bearing end of the pressure sensor 523 is connected to the piston rod of the pressing cylinder 521. The pressing block 524 is fixedly connected to the lower end of the linear optical axis 522, and two side plates 5241 are provided at intervals at the bottom of the pressing block 524. The two side plates 5241 are used to block the two sides of the saddle. By setting up a linear optical axis 522 and a second linear bearing 300, the downward movement of the pressing component 52 is smoother. The pressure sensor 523 is used to detect the pressure of the pressing block 524 driven by the pressing cylinder 521 on the saddle, so as to facilitate the adjustment of the air pressure of the pressing cylinder 521 according to the test needs, thereby realizing precise control of the pressing load.

[0027] Optionally, the mobile module includes a plurality of linear guide rails 60 arranged along the wheelbase direction of the vehicle 400 under test, the plurality of linear guide rails 60 are fixed in the machine 1, and a movable base plate 70 is fixedly connected to the sliders of the plurality of linear guide rails 60, and the rear wheel roller 3 and the rear roller drive motor 10 are installed on the movable base plate 70. Furthermore, the machine 1 is also provided with an adjustment component 80 and a guide component 90 parallel to the linear guide rail 60. The adjustment component 80 includes a screw 801, a screw nut 802 and an adjusting handwheel 803. Both ends of the screw 801 are rotatably arranged in the machine 1. The screw nut 802 is threadedly connected to the screw 801 and fixed on the movable base plate 70. The guide component 90 includes a linear bearing seat 901 and a guide shaft 902. The linear bearing seat 901 is fixed on the movable base plate 70. The guide shaft 902 passes through the linear bearing seat 901 and is fixedly arranged in the machine 1 at both ends. The screw 801 is rotated by adjusting the handwheel 803, and the screw nut 802 moves along the screw 801 and drives the movable base plate 70 to move along the linear guide rail 60. The guide component 90 makes the movable base plate 70 move more smoothly.

[0028] Optionally, the central axis driving device 6 includes a central axis driving motor 61 and a crank connecting shaft 62, one end of the crank connecting shaft 62 is connected to the output shaft of the central axis driving motor 61, and the other end is connected to the crank of the vehicle under test 400, so that the central axis driving motor 61 can drive the central axis of the vehicle under test 400 to rotate forward and reverse, and test items such as reversing test can be performed.

[0029] In addition, a control cabinet 100 is provided at one side of the machine 1 , and a DC regulated power supply 101 is provided inside the control cabinet 100 . When the vehicle 400 under test has no electricity, the DC regulated power supply 101 can supply power.

[0030] The method of using the test bench is:

[0031] The front wheel of the tested vehicle 400 is placed on the front wheel roller 2, and the rear wheel is placed on the rear wheel roller 3. The handlebar is fixed by the handlebar fixing mechanism 4. Then, the downward pressure load of the downward pressure cylinder 521 is adjusted by adjusting the air pressure, and the pressure block 524 is controlled to press down the saddle of the tested vehicle 400, so that the tested vehicle 400 is fixed on the machine 1. The rear wheel roller 3 can be moved forward and backward by the mobile module, which is suitable for testing vehicles with different wheelbases. Since the test bench is provided with a front wheel roller 2 and a rear wheel roller 3, and a front roller drive motor 8 and a front wheel torque sensor 9 are provided on the front wheel roller 2, and a rear roller drive motor 10 and a rear wheel torque sensor 20 are provided on the rear wheel roller 3, it can be compatible with front-wheel drive vehicles and rear-wheel drive vehicles for related performance tests. In addition, the handlebar fixing mechanism 4 fixes the handlebars, and the pressing mechanism 5 can adjust the pressing load, so as to fix the vehicle 400 under test during the test, so that it can be compatible with the testing of various vehicles. In addition to testing electric bicycles and balance vehicles, it can also be compatible with the testing of ordinary bicycles, electric motorcycles, scooters, elderly scooters and other models.

[0032] The test bench can perform the following safety and performance tests:

[0033] (1) Reversing test: First, the vehicle 400 under test is placed in an unloaded state, and then the central shaft drive device 6 drives the vehicle crank to rotate backward, causing the vehicle wheels to reverse backward. At this time, the current value of the vehicle power-assisting motor is checked. The current value of the vehicle power-assisting motor must not be greater than the unloaded current, and it is judged to be a good product.

[0034] (2) Pedal stop test: The middle axle drive device 6 drives the vehicle crank to rotate. When the vehicle's movement speed reaches 90% of the maximum auxiliary speed, the middle axle drive device 6 stops working. At this time, the current, speed, and running distance of the vehicle's power-assisting motor are monitored. The total movement distance of the vehicle during the process from when the middle axle drive device 6 stops working to when the vehicle's power-assisting motor current is less than or equal to the no-load current is recorded, and the current trend is displayed in a waveform graph when the pedal stops (starting point) and the motor current is less than or equal to the no-load current (end point).

[0035] (3) Brake shutdown test: The central shaft drive device 6 drives the vehicle crank to rotate, so that the vehicle's movement speed reaches 80% of the maximum auxiliary speed for 5 minutes, and then increases the vehicle's movement speed but does not exceed 125% of the maximum auxiliary speed. During this period of increasing speed, the vehicle's power assist motor current is less than or equal to the no-load current.

[0036] (4) Temperature rise test: Press down the pressing mechanism 5 to press on the vehicle saddle with the rated load, run the vehicle at a constant speed for a period of time, and monitor the temperature change of the vehicle power assist motor.

[0037] (5) Maximum speed test: First, the vehicle 400 to be tested is fixed on the machine 1, the middle shaft drive device 6 is disconnected, and the vehicle 400 to be tested is started. The maximum speed of a front-wheel drive vehicle can be measured by the rotation speed of the front wheel roller 2, and the maximum speed of a rear-wheel drive vehicle can be measured by the rotation speed of the rear wheel roller (8).

[0038] (6) Power-assistance ratio test: The rear roller drive motor 10 connected to the rear wheel roller 3 is loaded with different damping to simulate different slopes. At this time, the total power of the motor is equal to the sum of the work done by the central shaft drive device 6 and the work done by the vehicle power-assistance motor. The crank power and the vehicle power-assistance motor power are measured separately, and then the ratio of the two is calculated. The obtained value is called the power-assistance ratio.

[0039] (7) Long distance travel test: First, the vehicle 400 to be tested is fixed on the machine 1, the middle shaft drive device 6 is disconnected, and the pressing mechanism 5 is pressed down to press the vehicle saddle with the rated load. The vehicle 400 to be tested is started and the vehicle is run at a constant speed to test the driving condition of the vehicle under a certain load at the rated speed.

[0040] (8) Power consumption per 100 km test: First, the vehicle 400 to be tested is fixed on the machine 1, the central shaft drive device 6 is disconnected, and the vehicle 400 to be tested is started to detect the power consumption per 100 km of the vehicle.

[0041] It should be understood that all the above embodiments are illustrative rather than restrictive, and any modifications, equivalent changes and modifications made by those skilled in the art to the specific embodiments described above under the conception of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An electric bicycle and balance car test bench, characterized by: It comprises a machine platform (1), a front wheel roller (2), a rear wheel roller (3), a handlebar fixing mechanism (4), a pressing mechanism (5) and a middle shaft driving device (6); The machine platform (1) is provided with a frame (7); The front wheel roller (2) and the rear wheel roller (3) are arranged in parallel inside the machine platform (1) and the side walls of the rollers extend out of the top of the machine platform (1); the rotating shaft of the front wheel roller (2) is connected to a front roller driving motor (8) and a front wheel torque sensor (9); the rotating shaft of the rear wheel roller (3) is connected to a rear roller driving motor (10) and a rear wheel torque sensor (20); and a moving module is provided below the rear wheel roller (3) for moving the rear wheel roller (3) forward and backward; The handlebar fixing mechanism (4) is arranged on the front side of the frame (7) and is used to fix the handlebar of the vehicle (400) under test; The pressing mechanism (5) is arranged on the top of the frame (7) and is used to press the saddle of the vehicle (400) under test; The central shaft driving device (6) is arranged on the machine platform (1) and is connected to the crank of the vehicle (400) being tested.

2. The electric bicycle and balance vehicle test bench according to claim 1, characterized in that: The handlebar fixing mechanism (4) comprises a fixed shaft (41), a bearing seat (42), a connecting rod (43), a guide light shaft (44), a connecting plate (45) and a clamp (46); the fixed shaft (41) is transversely fixed between the upper front parts of the frame (7); the bearing seat (42) is rotatably connected to the fixed shaft (41); one end of the connecting rod (43) is fixedly connected to the bearing seat (42); the other end is provided with a connecting block (431); a first linear bearing (200) is installed on the connecting block (431); the guide light shaft (44) is parallel to the connecting rod (43); one end of the guide light shaft (44) passes through the first linear bearing (200); the other end is fixedly connected to the connecting plate (45); two sliding members (451) are provided on the connecting plate (45); the sliding members (451) can slide along the connecting plate (45); the clamp (46) is installed on the sliding member (451).

3. The electric bicycle and balance vehicle test bench according to claim 1, characterized in that: The pressing mechanism (5) comprises a sliding frame (51) and a pressing assembly (52); the sliding frame (51) is slidably arranged on the top of the frame (7) and the pressing assembly (52) is vertically arranged below the sliding frame (51).

4. The electric bicycle and balance vehicle test bench according to claim 3, characterized in that: The top of the frame (7) is fixedly connected to a push rod (71) arranged along the wheelbase direction of the vehicle (400) to be tested; the sliding frame (51) is sleeved on the push rod (71); the sliding frame (51) comprises a base plate (511), a support plate (512), a roller (513) and an adjustment handle (514); the support plate (512) is vertically fixed on both sides of the base plate (511); the roller (513) is rotatably connected between the tops of the support plates (512) on both sides; the roller (513) can roll along the push rod (71); the adjustment handle (514) is threadedly connected to the bottom of the base plate (511); and its connection end is used to abut against the bottom of the push rod (71).

5. The electric bicycle and balance vehicle test bench according to claim 4, characterized in that: The pressing assembly (52) comprises a pressing cylinder (521), a linear optical axis (522), a pressure sensor (523) and a pressure block (524); the rodless side end cover of the pressing cylinder (521) is fixedly connected to the base plate (511); the rod side end cover is provided with a fixing plate (30); second linear bearings (300) are installed on both sides of the fixing plate (30); the linear optical axis (522) passes through the second linear bearing (300) and is provided with a fixing block (40); the pressure sensor (523) is installed on the fixing block (40); and the force-bearing end of the pressure sensor (523) is connected to the piston rod of the pressing cylinder (521); the pressure block (524) is fixedly connected to the lower end of the linear optical axis (522); and two side plates (5241) are provided at intervals at the bottom of the pressure block (524).

6. The electric bicycle and balance vehicle test bench according to claim 1, characterized in that: The mobile module comprises a plurality of linear guide rails (60) arranged along the wheelbase direction of the vehicle (400) to be tested, the plurality of linear guide rails (60) being fixed in the machine platform (1), and a mobile base plate (70) being fixedly connected to the sliders of the plurality of linear guide rails (60), and the rear wheel roller (3) and the rear roller driving motor (10) being mounted on the mobile base plate (70).

7. The electric bicycle and balance vehicle test bench according to claim 6, characterized in that: The machine platform (1) is also provided with an adjustment component (80) and a guide component (90) which are parallel to the linear guide rail (60); the adjustment component (80) comprises a screw (801), a screw nut (802) and an adjustment hand wheel (803); both ends of the screw (801) are rotatably arranged in the machine platform (1); the screw nut (802) is threadedly connected to the screw (801) and fixed on the movable base plate (70); the guide component (90) comprises a linear bearing seat (901) and a guide shaft (902); the linear bearing seat (901) is fixed on the movable base plate (70); the guide shaft (902) passes through the linear bearing seat (901) and both ends are fixedly arranged in the machine platform (1).

8. The electric bicycle and balance vehicle test bench according to claim 1, characterized in that: The central axis driving device (6) comprises a central axis driving motor (61) and a crank connecting shaft (62), one end of the crank connecting shaft (62) is connected to the output shaft of the central axis driving motor (61), and the other end is connected to the crank of the tested vehicle (400).

9. The electric bicycle and balance vehicle test bench according to claim 1, characterized in that: The front roller drive motor (8) and the rear roller drive motor (10) are servo motors.

10. The electric bicycle and balance vehicle test bench according to claim 1, characterized in that: A control cabinet (100) is provided on one side of the machine platform (1), and a DC regulated power supply (101) is provided in the control cabinet (100).

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