A multi-strip power loss test bench

Abstract

The present invention is a multi-belt power loss test bench, which relates to the technical field of testing machines. It comprises: a test bench lower box, with the test bench box disposed on top of the test bench lower box; a driving wheel drive assembly and a driven wheel assembly, which are disposed on top of the test bench lower box and are located inside the test bench box. The driving wheel drive assembly comprises a main shaft and a driving pulley detachably mounted on the main shaft, and is used to drive the driving pulley to rotate. The driven wheel assembly comprises a driven shaft and a driven pulley detachably mounted on the driven shaft, and the driven pulley and the driving pulley are coupled to each other via a transmission belt; and a slide rail assembly, which is used to adjust the position of the driven wheel assembly to adjust and lock the center distance between the driving pulley and the driven pulley.

Description

Technical Field

[0001] The present invention relates to the technical field of testing machines, in particular to a multi-band power loss test bench. Background Art

[0002] As one of the core components in the field of mechanical transmission, belt drive is widely used in automotive front-end accessory drive (FEAD) systems.

[0003] However, the current industry still relies heavily on complete vehicle assembly testing to determine key performance parameters and energy consumption characteristics of transmission belts. This approach has several drawbacks: low R&D efficiency, substandard system efficiency due to abnormal energy consumption, and the need for repeated disassembly and assembly verification significantly prolongs R&D cycles and increases costs. Currently, China lacks a dedicated, high-precision testing platform for transmission belt energy loss characteristics, resulting in a lack of reliable data support for design optimization and energy efficiency improvements, hindering the industry's technological advancement.

[0004] The search also found the currently disclosed belt drive system test benches, for example: Application No.: CN202010970142.6 discloses "A Belt Drive System Reliability Comprehensive Test Bench", which includes a test platform, on which a driving wheel moving slide, a driven wheel moving slide, a V-belt and a multi-V-belt test belt tensioning mechanism are provided. The driving wheel moving slide is provided with a driving motor, a driving wheel shaft system, and a synchronous belt test belt tensioning mechanism. The driven wheel moving slide is provided with a load motor and a driven wheel shaft system. The driving motor inputs power into the driving wheel shaft system in a synchronous belt transmission manner, and the load motor inputs load (torque) into the driven wheel shaft system in a synchronous belt transmission manner. A V-belt and multi-V-belt test belt tensioning mechanism is provided between the platform and the driving wheel shaft system and the driven wheel shaft system. A test tensioning pulley is provided on the synchronous belt, V-belt and multi-V-belt test belt tensioning mechanism, and the test belt is arranged on the test driving wheel, the test tensioning pulley and the test driven wheel. This invention is suitable for analyzing and evaluating the impact of pulley tensioning, installation accuracy, tensioner installation method, and tensioning force on the life and efficiency of belt drive systems. However, it lacks the capabilities to test power loss, simulate transmissions at variable high speeds, or collect and output relevant performance parameters.

[0005] Therefore, based on the above technical problems, technicians in this field urgently need to develop a multi-band power loss test bench. Summary of the Invention

[0006] The purpose of the present invention is to design a multi-belt power loss test bench suitable for power loss testing of various belt types, and to obtain high-precision energy loss characteristics of the transmission belt and quantify its characteristics by applying simulated working conditions to a two-axis belt transmission system.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] A multi-band power loss test bench of the present invention comprises:

[0009] A test bench lower box, a test bench upper box is arranged on top of the test bench lower box;

[0010] A driving wheel drive assembly and a driven wheel assembly, wherein the driving wheel drive assembly and the driven wheel assembly are arranged on the top of the lower box of the test bench and are located inside the box of the test bench, the driving wheel drive assembly includes a main shaft and a driving pulley detachably mounted on the main shaft, the driving wheel drive assembly is used to drive the driving pulley to rotate, the driven wheel assembly includes a driven shaft and a driven pulley detachably mounted on the driven shaft, and the driven pulley and the driving pulley are matched with each other by installing a transmission belt;

[0011] A slide rail assembly, the slide rail assembly is used to adjust the position of the driven pulley assembly to adjust and lock the center distance between the driving pulley and the driven pulley;

[0012] and an electric control system component, the electric control system component being externally connected to the lower box of the test bench via a cantilever provided on the lower box of the test bench, the electric control system component being used to set test conditions;

[0013] The active wheel drive assembly further includes a torque sensor, which is connected to the main shaft to measure the main shaft torque, and the torque sensor is electrically connected to the electronic control system assembly;

[0014] The driven pulley assembly further includes a tension sensor, the tension sensor being used to measure the tension of the belt transmission system between the driven pulley and the driving pulley, and the tension sensor being electrically connected to the electronic control system assembly;

[0015] The slide rail assembly also includes a grating scale displacement sensor, which is arranged along the extension direction of the slide rail assembly to measure the center distance between the driving pulley and the driven pulley. The grating scale displacement sensor is electrically connected to the electronic control system component.

[0016] Furthermore, the lower box of the test bench includes:

[0017] A lower box support plate, the lower box support plate constituting a support frame structure, a locker being fixedly provided on the inner side of the lower box support plate support frame structure, a cantilever support frame being provided on the outer side of the lower box support plate, and the bottom end of the cantilever being fixedly connected to the cantilever support frame;

[0018] Test bench support feet, the test bench support feet are arranged at the bottom of the lower box support plate;

[0019] and a bottom plate, the lower surface of which is fixedly connected to the top of the support frame structure of the lower box support plate through a support block, and the active wheel drive assembly and the slide rail assembly are both riveted to the bottom plate.

[0020] Furthermore, the box on the test bench includes an aluminum alloy support frame, which is connected to the base plate by bolts. A rear cabinet door is provided on the rear side of the aluminum alloy support frame. The front and top of the aluminum alloy support frame can be opened and closed by providing an upper compartment cover. A right window is provided on the right side of the aluminum alloy support frame. The rear cabinet door, upper compartment cover, right window and the aluminum alloy support frame are all connected by hinges.

[0021] Furthermore, the active wheel drive assembly includes a motor reducer base, a torque sensor base and a spindle support block riveted on the base plate;

[0022] The motor reducer base is mounted with a motor reducer, the input end of the motor reducer is provided with a motor, the torque sensor is mounted on the torque sensor base, and the main shaft is supported by a bearing seat with a bearing provided on the main shaft support block;

[0023] One end of the main shaft is connected to one end of the torque sensor through a coupling, the other end of the main shaft is mounted with the driving pulley, and the other end of the torque sensor is connected to the output end of the motor reducer through a coupling.

[0024] Furthermore, the driving pulley and the main shaft are connected by a key.

[0025] Furthermore, the driven wheel assembly includes a driven shaft assembly support plate, and two groups of driven shaft support seats are fixedly connected to the upper surface of the driven shaft assembly support plate. The two ends of the driven shaft are supported by bearing seats with bearings arranged on the two groups of driven shaft support seats. The driven pulley is installed at one end of the driven shaft, and the tension sensor is installed on a group of driven shaft support seats away from the driven pulley.

[0026] Furthermore, the driven pulley and the driven shaft are connected by a key.

[0027] Furthermore, the slide rail assembly includes two guide rails riveted on the base plate, two T-shaped aluminum grooves, and four guide rail sliders and four T-shaped blocks fixedly connected to the bottom surface of the driven shaft assembly support plate. The two guide rails and the two T-shaped aluminum grooves are arranged parallel to each other, the two T-shaped aluminum grooves are distributed between the two guide rails, the four guide rail sliders are symmetrically connected and slide on the two guide rails, the four T-shaped blocks are symmetrically connected to the two T-shaped aluminum grooves and slide on the T-shaped aluminum grooves, and the grating scale displacement sensor is arranged on one side of the guide rail and parallel to the guide rail.

[0028] A lead screw is provided on the upper surface of the base plate between the two T-shaped aluminum grooves. The lead screw is supported by a bearing seat fixedly connected to the base plate and provided with a bearing. A threaded sleeve is provided on the bottom surface of the driven shaft assembly support plate. The threaded sleeve is sleeved on the lead screw and threadedly engaged with the lead screw. A handwheel is provided at one end of the lead screw.

[0029] Furthermore, the driven pulley is at the same height as the driving pulley.

[0030] Furthermore, the electronic control system component includes a display, which is connected to the top of the cantilever by fixing bolts. The display is equipped with an emergency stop button, a reset button, a stop button, and a start button. The display has a display window, and a handrail is connected to one side of the display.

[0031] In the above technical solution, the present invention provides a multi-strip power loss test bench, which has the following beneficial effects:

[0032] 1. Multi-belt adaptability: The pulley and the axle are connected by a key, which is convenient for quick disassembly and replacement, and can intuitively reflect the impact of different belt types, sizes and pulley radius on power loss.

[0033] 2. Working condition simulation capability: By dynamically adjusting the center distance of the slide rail assembly and combining it with a tension sensor to monitor the initial tension in real time, actual working conditions can be accurately simulated. Energy loss rate, equivalent carbon emissions, and electricity cost are calculated and output intuitively using theoretical formulas.

[0034] 3. Anti-interference and expandability: The test bench support feet effectively reduce external vibration interference; under static working conditions, exciters, accelerometers, etc. can be loaded to measure the inherent properties of the belt (such as bending stiffness and natural frequency), helping designers shorten the R&D cycle.

[0035] 4. Dynamic data analysis: It can output the pulley speed, torque, and tension fluctuation curves in real time, which is convenient for analyzing the speed, tension and system modal laws under dynamic working conditions, and exploring the vibration reduction, noise reduction and energy saving mechanisms.

[0036] In summary, this test bench can systematically test the impact of different factors on belt drive power loss, analyze the vibration and noise patterns of the belt, and complete experimental calibration of parameters such as friction coefficient, bending damping, and elastic modulus, providing key data support for belt drive system design and promoting positive research and development in the industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0038] Figure 1 A schematic structural diagram of a multi-strip power loss test bench provided in an embodiment of the present invention;

[0039] Figure 2 A schematic structural diagram of an active wheel drive assembly of a multi-belt power loss test bench provided by an embodiment of the present invention;

[0040] Figure 3 A schematic structural diagram of a driven wheel assembly of a multi-belt power loss test bench provided by an embodiment of the present invention;

[0041] Figure 4 A bottom view of a driven wheel assembly and a slide rail assembly of a multi-belt power loss test bench provided by an embodiment of the present invention;

[0042] Figure 5 A schematic structural diagram of an electronic control system component of a multi-band power loss test bench provided by an embodiment of the present invention;

[0043] Figure 6 A schematic structural diagram of a lower box of a multi-strip power loss test bench provided by an embodiment of the present invention;

[0044] Figure 7 A schematic structural diagram of a box on a test bench of a multi-strip power loss test bench provided by an embodiment of the present invention;

[0045] Figure 8 This is a diagram indicating the positions of d1 and d2 in the relevant calculation formulas of a multi-strip power loss test bench provided by an embodiment of the present invention.

[0046] Description of reference numerals:

[0047] 1. Test bench lower box; 101. Lower box support plate; 102. Storage cabinet; 103. Cantilever support frame; 104. Test bench support feet; 105. Bottom plate;

[0048] 2. Test bench box; 201. Aluminum alloy support frame; 202. Rear cabinet door; 203. Upper compartment cover; 204. Right window;

[0049] 3. Driving wheel drive assembly; 301. Spindle; 302. Driving pulley; 303. Torque sensor; 304. Motor reducer base; 305. Torque sensor base; 306. Spindle support block; 307. Motor reducer; 308. Motor;

[0050] 4. Driven wheel assembly; 401. Driven shaft; 402. Driven pulley; 403. Tension sensor; 404. Driven shaft assembly support plate; 405. Driven shaft support seat;

[0051] 5. Slide rail assembly; 501. Grating scale displacement sensor; 502. Guide rail; 503. T-shaped aluminum groove; 504. Guide rail slider; 505. T-shaped block; 506. Lead screw; 507. Threaded sleeve; 508. Handwheel;

[0052] 6. Electronic control system components; 601. Display; 602. Emergency stop button; 603. Reset button; 604. Stop button; 605. Start button; 606. Display window; 607. Handrail;

[0053] 7. Cantilever. DETAILED DESCRIPTION

[0054] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0055] See also Figure 1-8 , a multi-strip power loss test bench, comprising:

[0056] The test bench lower box 1, the test bench upper box 2 is set on the top of the test bench lower box 1, the test bench lower box 1 and the test bench upper box 2 constitute the supporting main structure of the multi-band power loss test bench;

[0057] The driving wheel drive assembly 3 and the driven wheel assembly 4 are arranged on the top of the box 1 under the test bench and are located inside the box 2 on the test bench, so that the box 2 on the test bench plays a protective role for the driving wheel drive assembly 3 and the driven wheel assembly 4, and is used for the dustproof and soundproof functions of the test bench. The driving wheel drive assembly 3 includes a main shaft 301 and a driving pulley 302 detachably mounted on the main shaft 301. The driving wheel drive assembly 3 is used to drive the driving pulley 302 to rotate. The driven wheel assembly 4 includes a driven shaft 4 01 and a driven pulley 402 detachably mounted on the driven shaft 401, the driven pulley 402 and the driving pulley 302 are matched with each other by installing a transmission belt, so that the driving pulley 302 drives the driven pulley 402 to rotate synchronously through the transmission belt to perform a power loss test, and both the driving pulley 302 and the driven pulley 402 are installed in a detachable form, so that it can realize a multi-belt power loss test, which can intuitively reflect the influence of various belt models, sizes, pulley radius, etc. on power loss;

[0058] The slide rail assembly 5 is used to adjust the position of the driven pulley assembly 4 to adjust and lock the center distance between the driving pulley 302 and the driven pulley 402. The slide rail assembly 5 drives the driven pulley assembly 4 to move and adjust the center distance between the driving pulley 302 and the driven pulley 402 and maintain the relative position for testing;

[0059] and an electric control system component 6, which is externally connected to the lower box 1 of the test bench via a cantilever 7 provided on the lower box 1 of the test bench. The electric control system component 6 is used to set test conditions, and control the start and stop of the equipment, testing and safety protection. It is also used to complete the information collection of the system operation results and output the operating speed fluctuation and tension fluctuation curves, which can be retrieved through an external storage device;

[0060] The driving wheel drive assembly 3 further includes a torque sensor 303, which is connected to the main shaft 301 to measure the torque of the main shaft 301. The torque sensor 303 is electrically connected to the electronic control system assembly 6 so that the torque data of the main shaft 301 measured by the torque sensor 303 is transmitted to the electronic control system assembly 6 for display;

[0061] The driven pulley assembly 4 further includes a tension sensor 403, which is used to measure the tension of the belt transmission system between the driven pulley 402 and the driving pulley 302. The tension sensor 403 is electrically connected to the electronic control system assembly 6 to transmit tension data to the electronic control system assembly 6 for display;

[0062] The slide rail assembly 5 also includes a grating scale displacement sensor 501, which is arranged along the extension direction of the slide rail assembly 5 to measure the center distance between the driving pulley 302 and the driven pulley 402. The grating scale displacement sensor 501 is electrically connected to the electronic control system assembly 6.

[0063] Specifically, the initial tension can be obtained through the tension sensor 403. Both can be displayed intuitively as input parameters and can be dynamically adjusted to simulate actual working conditions. Through relevant theoretical formulas, the energy loss rate of the belt type under the test conditions, as well as the equivalent carbon emissions and electricity costs can be obtained and intuitively displayed as output parameters.

[0064] Furthermore, the test bench lower box 1 includes:

[0065] The lower box support plate 101 forms a support frame structure. A storage cabinet 102 is fixedly provided on the inner side of the support frame structure of the lower box support plate 101 for storing items. A cantilever support frame 103 is provided on the outer side of the lower box support plate 101. The bottom end of the cantilever 7 is fixedly connected to the cantilever support frame 103 to support the electronic control system component 6 through the cantilever 7.

[0066] The test bench support foot 104 is set at the bottom of the lower box support plate 101. The test bench support foot 104 is set on the vibration isolation foundation to isolate the impact of external vibration on the device;

[0067] And the bottom plate 105, the lower surface of the bottom plate 105 is fixedly connected to the top of the support frame structure of the lower box support plate 101 through a support block, and the active wheel drive assembly 3 and the slide rail assembly 5 are riveted to the bottom plate 105.

[0068] Furthermore, the box 2 on the test bench includes an aluminum alloy support frame 201, which is connected to the base plate 105 by bolts. A rear cabinet door 202 is provided on the rear side of the aluminum alloy support frame 201, and the front and top of the aluminum alloy support frame 201 are opened and closed by providing an upper compartment cover 203. A right window 204 is provided on the right side of the aluminum alloy support frame 201. The rear cabinet door 202, the upper compartment cover 203, the right window 204 and the aluminum alloy support frame 201 are all connected by hinges so that they can be opened and closed freely.

[0069] Specifically, the box 2 on the above test bench has three open windows. The upper cover 203 is used to facilitate the replacement of the pulley, the right window 204 corresponds to the position of the slide rail assembly 5 to adjust the center distance of the pulley, and the rear cabinet door 202 is used to replace the motor 308 of the active wheel drive assembly 3.

[0070] Furthermore, the driving wheel drive assembly 3 includes a motor reducer base 304 riveted to the base plate 105 , a torque sensor base 305 and a spindle support block 306 ;

[0071] A motor reducer 307 is mounted on the motor reducer base 304, a motor 308 is provided at the input end of the motor reducer 307, a torque sensor 303 is mounted on the torque sensor base 305, and the spindle 301 is supported by a bearing seat with a bearing provided on the spindle support block 306;

[0072] One end of the main shaft 301 is connected to one end of the torque sensor 303 through a coupling, and the other end of the main shaft 301 is installed with a driving pulley 302. The other end of the torque sensor 303 is connected to the output end of the motor reducer 307 through a coupling. Under the drive of the motor 308, the motor reducer 307 has an adjustable reduction ratio (directly adjusted by the electronic control system component 6) to control the speed to drive the driving pulley 302 to rotate through the main shaft 301. During this process, the torque of the main shaft 301 is measured by the torque sensor 303.

[0073] Among them, the motor reducer base 304, the torque sensor base 305 and the main shaft support block 306 support the motor reducer 307, the torque sensor 303, the main shaft 301 and the driving pulley 302 at a certain height so as to maintain the same height as the driven wheel assembly 4.

[0074] Furthermore, the driving pulley 302 and the main shaft 301 are connected by a key, so that the driving pulley 302 can be replaced conveniently and quickly.

[0075] Furthermore, the driven wheel assembly 4 includes a driven shaft assembly support plate 404, and two groups of driven shaft support seats 405 are fixedly connected to the upper surface of the driven shaft assembly support plate 404. The two ends of the driven shaft 401 are supported by bearing seats with bearings arranged on the two groups of driven shaft support seats 405. A driven pulley 402 is installed at one end of the driven shaft 401, and a tension sensor 403 is installed on a group of driven shaft support seats 405 away from the driven pulley 402.

[0076] Specifically, the driven shaft 401 rotates the driven pulley 402 under the rotatable support of the bearing, thereby driving the driving pulley 302 to drive the driven pulley 402 to rotate synchronously through the transmission belt to perform power loss testing. The tension sensor 403 is used to measure the tension of the belt drive system.

[0077] Furthermore, the driven pulley 402 and the driven shaft 401 are connected by a key, so that the driven pulley 402 can be replaced conveniently and quickly.

[0078] Furthermore, the slide rail assembly 5 includes two guide rails 502 riveted on the base plate 105, two T-shaped aluminum grooves 503, and four guide rail sliders 504 and four T-shaped blocks 505 fixedly connected to the bottom surface of the driven shaft assembly support plate 404. The two guide rails 502 and the two T-shaped aluminum grooves 503 are arranged parallel to each other, and the two T-shaped aluminum grooves 503 are distributed between the two guide rails 502. The four guide rail sliders 504 are symmetrically connected and slide on the two guide rails 502. The four T-shaped blocks 505 are symmetrically connected to the two T-shaped aluminum grooves 503 and slide on the T-shaped aluminum grooves 503. The grating scale displacement sensor 501 is arranged on one side of the guide rail 502 and is parallel to the guide rail 502. The base plate 105 is connected to the guide rail 502 through four A guide rail slider 504 and four T-blocks 505 are installed on the two guide rails 502 and the two T-shaped aluminum grooves 503, wherein the four guide rail sliders 504 slide on the two guide rails 502 to guide the movement direction of the base plate 105 and the driven wheel assembly 4. At the same time, the four T-blocks 505 are installed on the two T-shaped aluminum grooves 503, which not only play the role of supporting the movement of the base plate 105, but also have the role of preventing the base plate 105 and the driven wheel assembly 4 from moving laterally in a direction perpendicular to the T-shaped aluminum groove 503, so as to ensure the stability of the driven wheel assembly 4 during the movement and the fixed position. During the movement, the center distance numerical data between the active pulley 302 and the driven pulley 402 is collected by the grating scale displacement sensor 501;

[0079] A lead screw 506 is provided on the upper surface of the base plate 105, between the two T-shaped aluminum slots 503. The lead screw 506 is supported by a bearing seat fixedly connected to the base plate 105 and provided with a bearing. A threaded sleeve 507 is provided on the bottom surface of the driven shaft assembly support plate 404. The threaded sleeve 507 is sleeved on the lead screw 506 and threadedly engages with the lead screw 506. A handwheel 508 is provided at one end of the lead screw 506. Specifically, during operation, the handwheel 508 is manually turned to rotate the lead screw 506. Utilizing the threaded engagement between the lead screw 506 and the threaded sleeve 507, and the fact that the threaded sleeve 507 is fixedly connected to the base plate 105, the threaded sleeve 507 will drive the base plate 105 to move synchronously during the axial movement of the lead screw 506.

[0080] Furthermore, the driven pulley 402 is at the same height as the driving pulley 302 .

[0081] Furthermore, the electronic control system component 6 includes a display 601, which is connected to the top of the cantilever 7 by fixing bolts. The display 601 is equipped with an emergency stop button 602, a reset button 603, a stop button 604, and a start button 605. The display 601 has a display window 606, and a handrail 607 is connected to one side of the display 601.

[0082] Specifically, the electronic control system component 6 is used for equipment start / stop, testing, and safety protection. Display 601 is equipped with a display window 606 for setting and displaying the spindle 301 speed, operating status, time to reach the set speed, system stable operation duration, belt drive system center distance, and initial belt tension. It also collects information on system operation results and outputs speed and tension fluctuation curves, which can be retrieved via an external storage device. Display 601 is equipped with an armrest 607 for adjusting the display 601's position to facilitate experimental operation.

[0083] The working principle of the present invention is as follows:

[0084] Through key connection, the driving pulley 302 and the driven pulley 402 are loaded on the test bench and the transmission belt is installed according to the center distance required for the experiment. Turn the handwheel 508, and the center distance value output by the grating scale displacement sensor 501 and the belt initial tension value collected in real time by the display 601 and the tension sensor 403 are matched with the set conditions to ensure the center distance and initial belt tension required for the experiment. According to the actual working conditions, the operating conditions of the transmission system are adjusted, and the acceleration process time of the driving pulley 302, the set speed of the driving pulley 302 and the stable operation time of the belt transmission system can be adjusted. The transmission system speed fluctuation and tension fluctuation curve, energy loss rate and energy consumption cost can be output in real time through the electronic control system component 6. The relevant calculation formula is as follows:

[0085]

[0086] In the above formula, F is the initial tension of the belt, F2 is measured by the tension sensor 403, d1 is the lateral force arm between the tension sensor 403 and the center of the internal bearing of the driven shaft support seat 405 near the driven pulley 402, and d2 is the lateral force arm between the center of the driven pulley and the center of the internal bearing of the driven shaft support seat 405 near the driven pulley 402.

[0087] The multi-band power loss test bench of the present invention can perform the following tests:

[0088] (1) The pulley of the test bench is detachable, and the power loss of the transmission system can be tested for different belt models and different pulley sizes;

[0089] (2) The test bench is equipped with a grating scale displacement sensor 501, which can test the power loss of the transmission system for different pulley center distances;

[0090] (3) The test bench is equipped with a tension sensor 403, which can test the effect of different belt initial tensions on the power loss of the transmission system;

[0091] (4) The test bench is equipped with a motor 308 and a motor reducer 307 with an adjustable reduction ratio, and can test the power loss of the transmission system at different speeds, different pulley accelerations, and different stable operating times;

[0092] In another embodiment, the test bench is in a static state, and an infrared displacement sensor can be arranged in the middle of the belt to test the influence of different belt models, different pulley sizes, different belt center distances, and different belt initial tensions on the belt vibration law and the belt elastic modulus;

[0093] In dynamic state, this test bench can arrange an exciter at the initial meshing point between the pulley and the belt, an infrared displacement sensor in the middle of the belt, and a noise sensor at the meshing point between the belt and the driving pulley. It can test the influence of different belt models, different pulley sizes, different belt center distances, and different initial belt tensions on the vibration law and noise of the belt, as well as the belt friction coefficient and bending damping.

[0094] The above technical solution has the following beneficial effects:

[0095] 1. Multi-belt adaptability: The pulley and the axle are connected by a key, which is convenient for quick disassembly and replacement, and can intuitively reflect the impact of different belt types, sizes and pulley radius on power loss.

[0096] 2. Working condition simulation capability: By dynamically adjusting the center distance of the slide rail assembly and combining it with a tension sensor to monitor the initial tension in real time, actual working conditions can be accurately simulated. Energy loss rate, equivalent carbon emissions, and electricity cost are calculated and output intuitively using theoretical formulas.

[0097] 3. Anti-interference and expandability: The test bench support feet effectively reduce external vibration interference; under static working conditions, exciters, accelerometers, etc. can be loaded to measure the inherent properties of the belt (such as bending stiffness and natural frequency), helping designers shorten the R&D cycle.

[0098] 4. Dynamic data analysis: It can output the pulley speed, torque, and tension fluctuation curves in real time, which is convenient for analyzing the speed, tension and system modal laws under dynamic working conditions, and exploring the vibration reduction, noise reduction and energy saving mechanisms.

[0099] In summary, this test bench can systematically test the impact of different factors on belt drive power loss, analyze the vibration and noise patterns of the belt, and complete experimental calibration of parameters such as friction coefficient, bending damping, and elastic modulus, providing key data support for belt drive system design and promoting positive research and development in the industry.

[0100] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A multi-band power loss test bench, characterized in that: include: A test bench lower box (1), a test bench upper box (2) is arranged on top of the test bench lower box (1); A driving wheel drive assembly (3) and a driven wheel assembly (4), wherein the driving wheel drive assembly (3) and the driven wheel assembly (4) are arranged on the top of the lower box (1) of the test bench and are located inside the box (2) of the test bench, the driving wheel drive assembly (3) comprises a main shaft (301) and a driving pulley (302) detachably mounted on the main shaft (301), the driving wheel drive assembly (3) is used to drive the driving pulley (302) to rotate, the driven wheel assembly (4) comprises a driven shaft (401) and a driven pulley (402) detachably mounted on the driven shaft (401), and the driven pulley (402) and the driving pulley (302) are coupled to each other by installing a transmission belt; A slide rail assembly (5), the slide rail assembly (5) being used to adjust the position of the driven pulley assembly (4) so ​​as to adjust and lock the center distance between the driving pulley (302) and the driven pulley (402); and an electric control system component (6), the electric control system component (6) being externally connected to the lower box (1) of the test bench via a cantilever (7) provided on the lower box (1) of the test bench, the electric control system component (6) being used to set test conditions; The active wheel drive assembly (3) further includes a torque sensor (303), the torque sensor (303) being connected to the main shaft (301) for measuring the torque of the main shaft (301), and the torque sensor (303) being electrically connected to the electronic control system assembly (6); The driven pulley assembly (4) further includes a tension sensor (403), the tension sensor (403) being used to measure the tension of the belt transmission system between the driven pulley (402) and the driving pulley (302), and the tension sensor (403) being electrically connected to the electronic control system assembly (6); The slide rail assembly (5) further includes a grating scale displacement sensor (501), which is arranged along the extension direction of the slide rail assembly (5) to measure the center distance between the driving pulley (302) and the driven pulley (402), and the grating scale displacement sensor (501) is electrically connected to the electric control system assembly (6).

2. A multi-band power loss test bench according to claim 1, characterized in that: The test bench lower box (1) comprises: A lower box support plate (101), the lower box support plate (101) constituting a support frame structure, a storage cabinet (102) being fixedly provided on the inner side of the support frame structure of the lower box support plate (101), a cantilever support frame (103) being provided on the outer side of the lower box support plate (101), and the bottom end of the cantilever (7) being fixedly connected to the cantilever support frame (103); A test bench supporting foot (104), the test bench supporting foot (104) being arranged at the bottom of the lower box support plate (101); and a bottom plate (105), the lower surface of the bottom plate (105) being fixedly connected to the top of the support frame structure of the lower box support plate (101) via a support block, and the active wheel drive assembly (3) and the slide rail assembly (5) being riveted to the bottom plate (105).

3. A multi-band power loss test bench according to claim 2, characterized in that: The box (2) on the test bench includes an aluminum alloy support frame (201), the aluminum alloy support frame (201) is connected to the bottom plate (105) by bolts, a rear cabinet door (202) is provided on the rear side of the aluminum alloy support frame (201), the front side and the top of the aluminum alloy support frame (201) are opened and closed by providing an upper compartment cover (203), a right window (204) is provided on the right side of the aluminum alloy support frame (201), and the rear cabinet door (202), the upper compartment cover (203), the right window (204) and the aluminum alloy support frame (201) are all connected by hinges.

4. A multi-band power loss test bench according to claim 2, characterized in that: The driving wheel drive assembly (3) comprises a motor reducer base (304), a torque sensor base (305), and a main shaft support block (306) riveted on the base plate (105); A motor reducer (307) is mounted on the motor reducer base (304), a motor (308) is provided at the input end of the motor reducer (307), the torque sensor (303) is mounted on the torque sensor base (305), and the main shaft (301) is supported by a bearing seat with a bearing provided on the main shaft support block (306); One end of the main shaft (301) is connected to one end of the torque sensor (303) through a coupling, the other end of the main shaft (301) is mounted with the driving pulley (302), and the other end of the torque sensor (303) is connected to the output end of the motor reducer (307) through a coupling.

5. A multi-band power loss test bench according to claim 4, characterized in that: The driving pulley (302) and the main shaft (301) are connected by a key.

6. A multi-band power loss test bench according to claim 2, characterized in that: The driven wheel assembly (4) comprises a driven shaft assembly support plate (404), two groups of driven shaft support seats (405) are fixedly connected to the upper surface of the driven shaft assembly support plate (404), both ends of the driven shaft (401) are supported by bearing seats with bearings provided on the two groups of driven shaft support seats (405), one end of the driven shaft (401) is mounted with the driven pulley (402), and the tension sensor (403) is mounted on a group of driven shaft support seats (405) away from the driven pulley (402).

7. The multi-band power loss test bench according to claim 6, characterized in that: The driven pulley (402) and the driven shaft (401) are connected by a key.

8. The multi-band power loss test bench according to claim 6, characterized in that: The slide rail assembly (5) comprises two guide rails (502) riveted on the base plate (105), two T-shaped aluminum grooves (503), and four guide rail sliders (504) and four T-shaped blocks (505) fixedly connected to the bottom surface of the driven shaft assembly support plate (404). The two guide rails (502) and the two T-shaped aluminum grooves (503) are arranged parallel to each other. The two T-shaped aluminum grooves (503) are distributed between the two guide rails (502). The four guide rail sliders (504) are symmetrically connected and slide on the two guide rails (502). The four T-shaped blocks (505) are symmetrically connected and slide on the two T-shaped aluminum grooves (503). The grating scale displacement sensor (501) is arranged on one side of the guide rail (502) and is arranged parallel to the guide rail (502). A lead screw (506) is provided on the upper surface of the base plate (105) between the two T-shaped aluminum grooves (503), and the lead screw (506) is supported by a bearing seat fixedly connected to the base plate (105) and provided with a bearing. A threaded sleeve (507) is provided on the bottom surface of the driven shaft assembly support plate (404), and the threaded sleeve (507) is sleeved on the lead screw (506) and threadedly engaged with the lead screw (506). A handwheel (508) is provided at one end of the lead screw (506).

9. The multi-band power loss test bench according to claim 1, characterized in that: The driven pulley (402) is at the same height as the driving pulley (302).

10. The multi-band power loss test bench according to claim 1, characterized in that: The electric control system component (6) includes a display (601), the display (601) is connected to the top of the cantilever (7) via a fixing bolt, an emergency stop button (602), a reset button (603), a stop button (604), and a start button (605) are installed on the display (601), a display window (606) is provided on the display (601), and a handrail (607) is connected to one side of the display (601).

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