Test platform

Abstract

The invention discloses a test platform. The test platform comprises a bottom plate; the driving device comprises a first driver, a second driver and a third driver, the first driver and the second driver each comprise a lead screw assembly, the two lead screw assemblies are arranged in parallel, the first driver and the second driver are located on the same side, and the third driver is located on the other side; the test tool comprises a first connecting seat which is provided with a tension and pressure sensor and is driven by a first driver and a second driver; the second connecting seat is detachably connected to the bottom plate and is arranged between the first connecting seat and the third driver; the third connecting seat is detachably connected to the bottom plate and is arranged between the first connecting seat and the third driver; the torsion sensors are detachably connected to the bottom plate and arranged between the first connecting base and the third driver, and one torsion sensor is driven by the third driver; the device is high in integration degree, and is suitable for the performance test of various products, multiple items of products and assemblies.

Description

Technical Field

[0001] The present invention relates to the field of testing platforms, and in particular to a testing platform. Background Art

[0002] At present, products on the market, especially sports products, must meet the actual needs of various product performance indicators before they can enter the market. Testing product performance indicators requires corresponding product performance test benches, performance test benches, including speed, displacement, load, efficiency, motor performance and fatigue life, etc. Most of them are carried out on special equipment test benches, such as: speed, displacement test benches, efficiency test benches, motor dynamometer test benches, fatigue life test benches. Therefore, in order to meet product testing, all special equipment test benches are required, which has high testing costs and requires a large indoor space to accommodate these equipment. The production site cost is high. In addition, the same product needs to be transferred between various special equipment test benches, affecting the efficiency of the test. Summary of the invention

[0003] In order to overcome the deficiencies in the prior art, the present invention provides a test platform having the advantage of a high degree of integration.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A test platform, a base plate;

[0006] A driving device is arranged on the bottom plate, comprising a first driver, a second driver and a third driver, wherein the first driver and the second driver both comprise a screw assembly, and two groups of the screw assemblies are arranged in parallel, wherein the first driver and the second driver are located on the same side, and the third driver is located on the other side;

[0007] The test tool is arranged on the bottom plate and comprises:

[0008] The first connecting seat is provided with a tension and pressure sensor, and is synchronously driven by the first driver and the second driver;

[0009] A second connecting seat, detachably connected to the bottom plate, and arranged between the first connecting seat and the third driver;

[0010] A third connecting seat, detachably connected to the bottom plate, and arranged between the first connecting seat and the third driver;

[0011] A pair of torque sensors are detachably connected to the bottom plate and arranged between the first connection seat and the third driver, wherein one of the torque sensors is driven by the third driver.

[0012] By adopting the above technical solution, the second connecting seat and the torque sensor driven by the third driver cooperate to test the rotating working product; a pair of torque sensors and the third driver cooperate to test the rotating component; the first connecting seat and the torque sensor driven by the third driver cooperate to test the linear actuation component; the third connecting seat and the first connecting seat cooperate to detect the linear actuation product; this has a high degree of integration and is suitable for a variety of products, multiple products, and component performance tests. At the same time, there is no need to move between various special equipment test benches, which reduces the test piece handling time and improves test efficiency.

[0013] Optionally, the first driver, the second driver and the third driver are all driven by servo motors.

[0014] By adopting the above technical solution, the motor drive is used. Compared with the cylinder drive, it occupies a small area, responds quickly, and can provide a large range of high-precision force; the motor drive has low noise pollution and no leakage problems. When the test product is resting, the drive motor can also rest, which can maximize the goal of energy saving and environmental protection.

[0015] Optionally, a switch magnet is provided on the first connecting seat; a first proximity switch and a second proximity switch are provided on the bottom plate; the first proximity switch and the second proximity switch are used to turn off the first driver and the second driver; the first proximity switch and the second proximity switch respectively cooperate with the switch magnet to limit the starting point and the end point of the first connecting seat.

[0016] By adopting the above technical solution, the switch magnet cooperates with the first proximity switch and the second proximity switch respectively so that the first connecting seat stops at the first proximity switch or the second proximity switch, thereby controlling the movement limit position of the first connecting seat to avoid collision with other components.

[0017] Optionally, the second connecting seat includes a clamping base, a longitudinal drive assembly, a clamping adjustment seat, a clamping piece and a vertical adjustment assembly; the longitudinal drive assembly is used to drive the clamping adjustment seat to slide horizontally on the clamping base; the vertical adjustment assembly is used to drive the clamping piece to slide vertically on the clamping adjustment seat; the clamping piece is used to clamp the test piece.

[0018] By adopting the above technical solution, the longitudinal drive assembly and the vertical adjustment assembly can adjust the position of the clamping member to adapt to test pieces of different sizes.

[0019] Optionally, the clamping member includes a clamping bottom plate, a clamping top plate and a pair of clamping bolts; the pair of clamping bolts restrict the clamping bottom plate and the clamping top plate from clamping the test piece.

[0020] By adopting the above technical solution, the test piece is located between the clamping bottom plate and the clamping top plate, and then a pair of clamping bolts maintain the clamping bottom plate and the clamping top plate in a clamped state, which facilitates the disassembly and assembly of the test piece and the clamping piece.

[0021] Optionally, V-shaped limiting grooves are respectively formed on the opposite end surfaces of the clamping bottom plate and the clamping top plate.

[0022] By adopting the above technical solution, the side walls of a pair of V-shaped limiting grooves abut against the test piece to limit the test piece, so that the test piece is not easily displaced, and the clamping piece can adapt to test pieces of different sizes.

[0023] Optionally, the third driver is a damper.

[0024] By adopting the above technical solution, the damper passively provides torques of different magnitudes, so that only the rotating work product can be detected.

[0025] Optionally, both the input end and the output end of the torque sensor are connected to a coupling.

[0026] By adopting the above technical solution, the detection connecting shaft is connected to the rotating working product or the linear actuating component through a coupling, so that the detection part is easy to disassemble and assemble.

[0027] Optionally, the torque force applying member is a second servo motor or a damper.

[0028] By adopting the above technical solution, both the second servo motor and the damper can apply torque, but the second servo motor can change the torque size and can actively provide torque, while the damper can only passively provide torque of different sizes, so that only rotating work products can be detected.

[0029] Optionally, a counter is also included; the counter is used to accumulate the number of times the test piece is run.

[0030] By adopting the above technical solution and adding a counter, the running times of the test piece can be accumulated and used to calculate the fatigue life of the test piece, thereby further improving the functional integration of the test platform.

[0031] Optionally, it includes a grating ruler arranged on the base plate; the length direction of the grating ruler is parallel to the moving direction of the first connecting seat.

[0032] By adopting the above technical solution, the displacement within a certain period of time can be quickly obtained with the help of a grating ruler, so as to calculate the speed.

[0033] Optionally, the second connecting seat and the torque sensor driven by the third driver cooperate to test the rotating working product; a pair of the torque sensors and the third driver cooperate to test the rotating component; the first connecting seat and the torque sensor driven by the third driver cooperate to test the linear actuation component; the third connecting seat and the first connecting seat cooperate to detect the linear actuation product.

[0034] By adopting the above technical solution, the degree of integration is high and it is suitable for a variety of products, multiple products, and component performance testing. At the same time, there is no need to move between various special equipment test benches, which reduces the time of transporting test pieces and improves testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a structural schematic diagram of the present invention.

[0036] Figure 2 It is a structural schematic diagram of the second connecting socket of the present invention.

[0037] Figure 3 It is a schematic structural diagram of the cross section of the second connecting socket of the present invention.

[0038] Figure 4 It is a schematic structural diagram of the present invention when detecting a rotating work product.

[0039] Figure 5 It is a schematic structural diagram of the present invention when detecting a linear actuating component.

[0040] Figure 6 It is a schematic structural diagram of the present invention when detecting a linear actuation product.

[0041] Description of reference numerals:

[0042] 10. Bottom plate; 11. First screw rod support seat; 12. Second screw rod support seat;

[0043] 20. First driver; 21. First servo motor; 22. First reducer; 23. First coupling; 24. Driving screw rod;

[0044] 30. Second driver;

[0045] 40. A first connecting seat;

[0046] 50. Tension pressure sensor; 51. Test piece connection socket;

[0047] 60. Switch magnet; 61. First proximity switch; 62. Second proximity switch;

[0048] 70. a third driver; 71. a second servo motor; 72. a second reducer;

[0049] 80, second connecting seat; 81, clamping base; 82, longitudinal drive screw; 83, longitudinal hand wheel; 84, clamping adjustment seat; 841, longitudinal drive block; 85, vertical drive screw; 86, vertical hand wheel; 87, clamping member; 871, clamping bottom plate; 8711, vertical drive block; 872, clamping bolt; 873, clamping top plate;

[0050] 90. Torque sensor;

[0051] 100. third connecting socket;

[0052] 200. Counter;

[0053] 300, grating ruler;

[0054] 400, Rotating Work Products;

[0055] 500, linear actuation assembly;

[0056] 600. Linear actuation products. DETAILED DESCRIPTION

[0057] The following is combined with Figure 1-6 The present invention is described in further detail.

[0058] Embodiment 1: A test platform is disclosed, referring to Figure 1 , Figure 4-Figure 6 , including a base plate 10, a driving device and a test fixture; the driving device and the test fixture are both installed on the base plate 10; the driving device includes a first driver 20, a second driver 30 and a third driver 70; the first driver 20 and the second driver 30 are arranged on the same side, and the third driver 70 is arranged on the other side; the test fixture includes a first connecting seat 40, a second connecting seat 80, a third connecting seat 100 and a pair of torque sensors 90; the first driver 20 and the second driver 30 synchronously drive the first connecting seat 40 to move horizontally; a tension and pressure sensor 50 is arranged on the first connecting seat 40; the second connecting seat 80, the third connecting seat 100 and a pair of torque sensors 90 can be detachably connected to the base plate 10; the second connecting seat 80, the third connecting seat 100 and a pair of torque sensors 90 are located between the first connecting seat 40 and the third driver 70; one of the torque sensors 90 is driven to rotate by the third driver 70.

[0059] refer to Figure 4 , the second connection seat 80 and the torque sensor 90 driven by the third driver 70 cooperate to test the rotating work product 400; a pair of torque sensors 90 and the third driver 70 cooperate to test the rotating assembly; reference Figure 5 , the first connecting seat 40 and the torque sensor 90 driven by the third driver 70 cooperate to test the linear actuator assembly 500; Figure 6 The third connecting seat 100 and the first connecting seat 40 cooperate to detect the linear actuation product 600; wherein the rotating working product 400 is a motor or a motor and a reducer assembly, the rotating assembly is a planetary reducer or a gear set, the linear actuation assembly 500 is a ball screw nut or a T-type screw nut, and the linear actuation product 600 is an electric push rod.

[0060] refer to Figure 1 The first screw support seat 11 and the second screw support seat 12 are fixed on the base plate 10; the first driver 20 and the second driver 30 both include a first servo motor 21, a first reducer 22 and a screw assembly; the screw assembly includes a driving screw 24 and a driving nut; a pair of driving screws 24 are arranged in parallel; the output shaft of the first servo motor 21 is coaxially fixedly connected to the input end of the first reducer 22; the two ends of the driving screw 24 are respectively rotatably connected to the first screw support seat 11 and the second screw support seat 12 through bearings; the driving screw 24 is coaxially connected to the output end of the first reducer 22 through the first coupling 23; the driving nut is fixed on the first connecting seat 40; the driving screw 24 is screwed to the driving nut; the tension and pressure sensor 50 is fixed on the first connecting seat 40 and is connected to the test piece connecting seat 51. In order to improve the movement accuracy of the first connecting seat 40, the first connecting seat 40 is connected to the base plate 10 by a pair of mutually parallel linear guides, and the direction of the linear guides is parallel to the pair of driving screws 24.

[0061] refer to Figure 1 The third driver 70 includes a second servo motor 71 and a second reducer 72; the input end and the output end of the torque sensor 90 are both connected with a coupling; the output shaft of the second servo motor 71 is coaxially fixedly connected to the input end of the second reducer 72; the output end of the second reducer 72 is connected to the coupling of the torque sensor 90.

[0062] refer to Figure 2 and Figure 3 The second connecting seat 80 includes a clamping base 81, a longitudinal drive assembly, a clamping adjustment seat 84, a clamping member 87 and a vertical adjustment assembly; the longitudinal drive assembly is used to drive the clamping adjustment seat 84 to slide horizontally and is set on the clamping base 81; the vertical adjustment assembly is used to drive the clamping member 87 to slide vertically and is set on the clamping adjustment seat 84; the clamping member 87 is used to clamp the rotating work product; the surface where the clamping member 87 moves is perpendicular to the rotating axis of the torque sensor 90, so that the position of the clamping member 87 can be adjusted in the horizontal and vertical directions, so that the clamping member 87 can clamp rotating work products 400 of different sizes and can be connected to the coupling of the torque sensor 90.

[0063] refer to Figure 2 and Figure 3In order to improve the movement accuracy of the clamping adjustment seat 84, a pair of parallel linear guide rails are arranged between the clamping adjustment seat 84 and the clamping base 81; the longitudinal drive assembly includes a longitudinal drive screw 82 rotatably connected to the clamping base 81; the longitudinal drive screw 82 is arranged parallel to the pair of linear guide rails; a longitudinal drive block 841 is fixed to the bottom of the clamping adjustment seat 84; the longitudinal drive screw 82 penetrates and is threadedly connected to the longitudinal drive block 841; in order to facilitate driving the longitudinal drive screw 82, a longitudinal handwheel 83 is fixed on the longitudinal drive screw 82.

[0064] refer to Figure 2 and Figure 3 In order to improve the movement accuracy of the clamping member 87, a pair of parallel linear guides are arranged between the clamping member 87 and the clamping adjustment seat 84; the linear guides are arranged in the vertical direction; the vertical adjustment assembly includes a vertical driving screw 85 rotatably connected to the clamping adjustment seat 84; the vertical driving screw 85 is arranged parallel to the pair of linear guides; a vertical driving block 8711 is fixed on the clamping member 87; the vertical driving screw 85 passes through and is threadedly connected to the vertical driving block 8711; in order to facilitate the driving of the vertical driving screw 85, a vertical handwheel 86 is fixed on the top of the vertical driving screw 85.

[0065] refer to Figure 2 and Figure 3 The clamping member 87 includes an L-shaped clamping base plate 871, a clamping top plate 873 and a pair of clamping bolts 872; the vertical driving block 8711 is fixed on the vertical portion of the clamping base plate 871; the horizontal portion of the clamping base plate 871 is arranged parallel to the clamping top plate 873; a pair of clamping bolts 872 vertically pass through the clamping top plate 873 and the bottom is screwed on the horizontal portion of the clamping base plate 871; in order to adapt to rotating work products of different sizes, the end surfaces of the clamping top plate 873 and the horizontal portion of the clamping base plate 871 that are close to each other are respectively formed with V-shaped limit grooves. After clamping is completed, the rotating work product is located between the pair of V-shaped limit grooves, and the rotating work product is not easy to shift.

[0066] In order to facilitate the disassembly of the second connection base 80, the third connection base 100 and the torque sensor 90 so as to make full use of the bottom plate 10 and make the test platform more compact, refer to Figure 4-Figure 6 A plurality of pairs of connection holes are provided on the base plate 10 along a direction parallel to the driving screw rod 24 , and the second connection seat 80 , the third connection seat 100 and the torque sensor 90 are connected to the base plate 10 through a pair of bolts and a pair of connection holes.

[0067] Working principle of embodiment 1:

[0068] The moving speed V of the first connecting seat 40 is obtained by the rotation speed of the driving screw 24;

[0069] A pair of first servo motors 21 controls the first connection seat 40 to move and apply a tensile force to the test piece. During this process, the tensile force F applied to the test piece is tested by the tensile pressure sensor 50 .

[0070] When testing the rotating work product 400, refer to Figure 4 The second connecting seat 80 is installed on the base plate 10, the shell of the rotating working product 400 is fixed on the clamping member 87, and the output shaft is connected to the third driver 70 through the torque sensor 90. During the test, the rotating working product 400 is powered on, and the torque sensor 90 applies reverse torque through the current loop control of the second servo motor 71. Then, the torque sensor 90 measures the torque T and angular velocity ω at the output end of the rotating working product 400. Combined with the voltage U and current I when the rotating working product is working 400, the efficiency of the rotating working product is: η=T*ω / (U*I). In addition, in order to obtain the performance of the rotating working product 400 at different working points, it is necessary to change the current of the second servo motor 71, thereby changing the torque value at the output end of the rotating working product 400, so as to obtain the speed, current, efficiency and other data of the rotating working product 400 under different torques, so as to obtain the performance of the rotating working product 400 under different states; in other embodiments, the second servo motor 71 can also be replaced by a damper, and the damper is a hysteresis damper or a magnetic powder damper, and an external controller is used to control the resistance of the hysteresis damper or the magnetic powder damper, so as to obtain the performance curve of the rotating working product.

[0071] When testing the rotating component, the input end of the rotating component is connected to the torque sensor 90 driven by the third driver 70, and the output end is connected to another torque sensor 90; the second servo motor 71 controls the constant torque output through the current loop, and the torque sensor 90 on the corresponding side measures the torque T2 and angular velocity ω2 at the output end of the rotating component, and the torque sensor 90 on the corresponding side measures the torque T1 and angular velocity ω1 at the input end of the rotating component; the efficiency η of the rotating component is T2*ω2 / (T1*ω1).

[0072] When testing the linear actuator product 600, refer to Figure 6 , the third connecting seat 100 is installed on the base plate 10, the tail pull of the linear working product is connected to the third connecting seat 100, and the front pull is connected to the test piece connecting seat 51 connected to the pulling pressure sensor 50. During the test, a reverse force is applied through a current loop control of a pair of first servo motors 21, and then the linear working product 600 is powered on. The pulling pressure sensor 50 measures the pulling force F at the output end of the linear working product 600, combined with the voltage U and current I of the linear working product 600 when it is working; the efficiency η of the linear working product 600 is F*V / (U*I).

[0073] When testing the linear actuator assembly 500, refer to Figure 5The lead screw of the linear actuating assembly 500 is connected to the third driver 70 through the torque sensor 90, and the lead screw nut is threaded with a connecting tube; the connecting tube is connected to the test piece connecting seat 51 connected to the tension and pressure sensor 50; a reverse force is applied to the lead screw nut through a pair of first servo motors 21 current loop control, and the lead screw is driven to rotate through the first servo motor 71 speed loop, the tension and pressure sensor 50 measures the tension F applied to the lead screw nut, and the torque sensor 90 measures the torque T and angular velocity ω of the lead screw, and the efficiency η of the linear actuating assembly is F*V / (T*ω).

[0074] Embodiment 2: The difference between Embodiment 2 and Embodiment 1 is: Figure 1 The test platform also includes a counter 200 for accumulating the number of operations of the rotary working product 400 and the linear actuating product 500; when in use, the controller of the test platform controls the periodic movement of the rotary working product 400 or the linear actuating product 500, and records the working status of the rotary working product 400 or the linear actuating product 500, and combines the accumulated number of movements obtained by the counter 200 to obtain the fatigue life of the rotary working product 400 or the linear actuating product 500.

[0075] Embodiment 3: The difference between Embodiment 3 and Embodiment 1 is: Figure 1 , the first connection seat 40 is connected with a switch magnet 60; the bottom plate 10 is fixed with a first proximity switch 61 and a second proximity switch 62; the first proximity switch 61 and the second proximity switch 62 are distributed along the moving direction of the first connection seat 40; the first proximity switch 61 and the second proximity switch 62 are used to turn off a pair of first servo motors 21; the first proximity switch 61 and the second proximity switch 62 cooperate to limit the starting point and the end point of the first connection seat 40. In this way, when the first connection seat 40 reaches the first proximity switch 61 or the second proximity switch 62, the switch magnet 60 approaches the first proximity switch 61 or the second proximity switch 62, and the proximity switch 62 controls the first servo motor 21 to stop running, so that the first connection seat 40 stops at the first proximity switch 61 and the second proximity switch 62, that is, the proximity switch 62 is the limit position of the first connection seat 40, thereby controlling the first connection seat 40 to prevent the first connection seat 40 from accidentally hitting other components.

[0076] Embodiment 4: Embodiment 4 differs from Embodiment 1 in that: a grating ruler 300 is mounted on the base plate 10; the grating ruler 300 is parallel to the driving screw 24; the grating ruler 300 is used to obtain the displacement of the first connecting seat 40 within a certain period of time, thereby obtaining its speed.

[0077] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A test platform, characterized in that: include: Base plate; A driving device is arranged on the bottom plate, comprising a first driver, a second driver and a third driver, wherein the first driver and the second driver both comprise a screw assembly, and two groups of the screw assemblies are arranged in parallel, wherein the first driver and the second driver are located on the same side, and the third driver is located on the other side; The test tool is arranged on the bottom plate and comprises: The first connecting seat is provided with a tension and pressure sensor, and is synchronously driven by the first driver and the second driver; A second connecting seat, detachably connected to the bottom plate, and arranged between the first connecting seat and the third driver; A third connecting seat, detachably connected to the bottom plate, and arranged between the first connecting seat and the third driver; A pair of torque sensors are detachably connected to the bottom plate and arranged between the first connection seat and the third driver, wherein one of the torque sensors is driven by the third driver.

2. A test platform according to claim 1, characterized in that: The first driver, the second driver and the third driver are all driven by servo motors.

3. A test platform according to claim 1, characterized in that: A switch magnet is provided on the first connecting seat; a first proximity switch and a second proximity switch are provided on the bottom plate; the first proximity switch and the second proximity switch are used to turn off the first driver and the second driver; the first proximity switch and the second proximity switch respectively cooperate with the switch magnet to limit the starting point and the end point of the first connecting seat.

4. A test platform according to claim 1, characterized in that: The second connecting seat includes a clamping base, a longitudinal drive assembly, a clamping adjustment seat, a clamping piece and a vertical adjustment assembly; the longitudinal drive assembly is used to drive the clamping adjustment seat to slide horizontally on the clamping base; the vertical adjustment assembly is used to drive the clamping piece to slide vertically on the clamping adjustment seat; the clamping piece is used to clamp the test piece.

5. A test platform according to claim 4, characterized in that: The clamping member includes a clamping bottom plate, a clamping top plate and a pair of clamping bolts; the pair of clamping bolts restrict the clamping bottom plate and the clamping top plate from clamping the test piece.

6. A test platform according to claim 5, characterized in that: V-shaped limiting grooves are respectively formed on the opposite end surfaces of the clamping bottom plate and the clamping top plate.

7. A test platform according to claim 1, characterized in that: The third driver is a damper.

8. A test platform according to claim 1, characterized in that: The input end and the output end of the torque sensor are both connected with couplings.

9. A test platform according to claim 1, characterized in that: A counter is also included; the counter is used to accumulate the number of times the test piece is run.

10. A test platform according to claim 1, characterized in that: It includes a grating ruler arranged on the bottom plate; the length direction of the grating ruler is parallel to the moving direction of the first connecting seat.

11. A test platform according to any one of claims 1 to 10, characterized in that: The second connecting seat and the torque sensor driven by the third driver cooperate to test the rotating working product; a pair of the torque sensors and the third driver cooperate to test the rotating component; the first connecting seat and the torque sensor driven by the third driver cooperate to test the linear actuation component; the third connecting seat and the first connecting seat cooperate to detect the linear actuation product.

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