Test device

Abstract

The application provides a test device. The test device comprises a base, a first rotary table, a second rotary table, a first driving mechanism, a second driving mechanism, a first sensing mechanism and a second sensing mechanism. The first rotary table can rotate around a first horizontal axis. The second rotary table can rotate around a second horizontal axis. The second rotary table is used for carrying a test product. The first driving mechanism is used for driving the first rotary table to rotate. The second driving mechanism is used for driving the second rotary table to rotate. The first sensing mechanism and the second sensing mechanism are used for sensing the rotation angles of the first rotary table and the second rotary table respectively. The test device can realize real-time adjustment of the rotations of the first rotary table and the second rotary table by the first driving mechanism and the second driving mechanism, avoid the situation that the second rotary table is excessively inclined or cannot be leveled, and simultaneously realize the purpose of precisely controlling the inclination angle of the second rotary table.

Description

Technical Field

[0001] This application relates to the field of testing and measurement, specifically to a testing device. Background Technology

[0002] Because engines often exhibit varying tilt angles during actual use, tilting turntables are commonly used in laboratories to simulate these tilting postures and allow the engine to operate at different angles to assess its performance, reliability, and lubrication. However, most current tilting turntables suffer from an inability to control the tilt angle under unbalanced torque conditions, leading to excessive tilting of the turntable towards the side with higher torque. This poses a risk of the engine tipping over or slipping. Summary of the Invention

[0003] Therefore, it is necessary to provide a test device that can limit the tilt angle.

[0004] One embodiment of this application provides a testing apparatus, including a base, a first turntable, a second turntable, a first driving mechanism, a second driving mechanism, a first sensing mechanism, and a second sensing mechanism. The first turntable is connected to the base and is rotatable about a first horizontal axis. The second turntable is connected to the first turntable and is rotatable about a second horizontal axis, which is perpendicular to the first horizontal axis. The second turntable is used to carry a test specimen. The first driving mechanism is disposed on the base and is used to drive the first turntable to rotate. The second driving mechanism is disposed on the first turntable and is used to drive the second turntable to rotate. The first sensing mechanism is used to sense a first rotation angle of the first turntable, so that the first driving mechanism controls the rotation of the first turntable in real time according to the first rotation angle. The second sensing mechanism is used to sense a second rotation angle of the second turntable, so that the second driving mechanism controls the rotation of the first turntable in real time according to the second rotation angle.

[0005] The aforementioned test apparatus senses the rotation angle of the first turntable and the second turntable through the first sensing mechanism, and then senses the position of the first turntable and the second turntable when they are rotated to the horizontal position and the two extreme angles through the second sensing mechanism. This allows the first drive mechanism and the second drive mechanism to adjust the rotation of the first turntable and the second turntable in real time, avoiding the second turntable from tilting excessively or being unable to be leveled, while achieving the purpose of precisely controlling the tilt angle of the second turntable.

[0006] In some embodiments, the test apparatus further includes two first bearing seats, two first rotating shafts, two second bearing seats, and two second rotating shafts. The two first bearing seats are disposed opposite each other on the base along a first horizontal axis. The two first rotating shafts are disposed on opposite sides of the first turntable along the first horizontal axis and connected to the first bearing seats on the corresponding sides. The two second bearing seats are disposed opposite each other on the first turntable along a second horizontal axis. The two second rotating shafts are disposed on opposite sides of the second turntable along the second horizontal axis and connected to the second bearing seats on the corresponding sides.

[0007] In some embodiments, the first driving mechanism includes a first gear disk, a first gear, and a first driver. The first gear disk is disposed on the first turntable and its axis coincides with that of the first rotating shaft. The first gear meshes with the first gear disk. The first driver is used to drive the first gear to rotate and drive the first gear disk to rotate, thereby driving the first turntable to rotate. The second driving mechanism includes a second gear disk, a second gear, and a second driver. The second gear disk is disposed on the second turntable and its axis coincides with that of the second rotating shaft. The second gear meshes with the second gear disk. The second driver is used to drive the second gear to rotate and drive the second gear disk to rotate, thereby driving the second turntable to rotate.

[0008] In some embodiments, the first sensing mechanism includes a first sensor, which includes a first stator and a first rotor. The first stator is disposed on a base, and the first rotor is connected to a first rotating shaft. The first stator is capable of sensing the rotation angle of the first rotor to sense the rotation angle of the first turntable. The second sensing mechanism includes a second sensor, which includes a second stator and a second rotor. The second stator is disposed on the first turntable, and the second rotor is connected to a second rotating shaft. The second stator is capable of sensing the rotation angle of the second rotor to sense the rotation angle of the second turntable.

[0009] In some embodiments, the testing apparatus further includes a third sensing mechanism and a fourth sensing mechanism. The third sensing mechanism is used to sense the first turntable rotating to a first position of horizontal and two extreme angles, so that the first drive mechanism limits the rotation angle of the first turntable according to the first position. The fourth sensing mechanism is used to sense the second turntable rotating to a second position of horizontal and two extreme angles, so that the second drive mechanism limits the rotation angle of the second turntable according to the second position.

[0010] In some embodiments, the third sensing mechanism includes a first mounting bracket, a first pointer, and a third sensor. The first mounting bracket is disposed on a base, one end of the first pointer is disposed on the first rotor portion, and the other end of the first pointer points to the first mounting bracket. The third sensor is disposed on the first mounting bracket and can sense three positions of the pointer corresponding to the first turntable when it is in a first horizontal position, a first extreme angle position, and a second extreme angle position. The fourth sensing mechanism includes a second mounting bracket, a second pointer, and a fourth sensor. The second mounting bracket is disposed on the first turntable, one end of the second pointer is disposed on the second rotor portion, and the other end of the second pointer points to the second mounting bracket. The fourth sensor is disposed on the second mounting bracket and can sense three positions of the pointer corresponding to the second turntable when it is in a second horizontal position, a third extreme angle position, and a fourth extreme angle position.

[0011] In some embodiments, the testing apparatus further includes multiple limiting mechanisms, each limiting mechanism including a pin seat, a pin, and a handle. The pin seat is disposed on the base and the first turntable. The pin seat has a communicating groove and a through hole. The pin slides through the through hole along the axis. One end of the handle extends into the groove and connects to the pin, and the other end extends out of the groove. The first turntable and the second turntable have insertion holes corresponding to the pin. The handle can control the pin to be inserted into or pulled out of the insertion hole to lock or unlock the first turntable and the second turntable.

[0012] In some embodiments, the slide includes a locking section, a transition section, and an unlocking section connected in sequence. The handle can move along the axis of the pin in the transition section and can rotate about the axis of the pin in the locking and unlocking sections, so that the pin seat can restrict the handle located in the locking and unlocking sections, thereby fixing the position of the pin.

[0013] In some embodiments, each limiting mechanism further includes a fifth sensor located within the unlocking section for sensing the handle to sense the pin and unlock the first or second turntable.

[0014] In some embodiments, the first driving mechanism further includes a first reduction assembly, which includes a first worm gear and a first worm. The first worm is connected to a first driver, and the first worm gear is coaxially connected to a first gear. The first driver drives the first worm to rotate, the first worm drives the first worm gear to rotate, and the first worm gear drives the first gear to rotate synchronously. The second driving mechanism further includes a second reduction assembly, which includes a second worm gear and a second worm. The second worm is connected to a second driver, and the second worm gear is coaxially connected to a second gear. The second driver drives the second worm to rotate, the second worm drives the second worm gear to rotate, and the second worm gear drives the second gear to rotate synchronously. Attached Figure Description

[0015] Figure 1 This is a perspective view of the test apparatus in one embodiment of this application.

[0016] Figure 2 for Figure 1 A three-dimensional view of the experimental device from another perspective.

[0017] Figure 3 for Figure 1 Exploded view of the experimental setup.

[0018] Figure 4 for Figure 3 An exploded view of the experimental setup from another perspective.

[0019] Figure 5 This is a perspective view of the first sensing mechanism and the second sensing mechanism in one embodiment of this application.

[0020] Figure 6 This is a perspective view of the limiting mechanism in one embodiment of this application.

[0021] Figure 7 This is a partial cross-sectional view of the base, the limiting pin, and the first gear plate in one embodiment of this application.

[0022] Figure 8 This is a partial cross-sectional view of the first turntable, the limiting pin, and the second gear plate in one embodiment of this application.

[0023] Figure 9 This is a perspective view of the first turntable in one embodiment of this application.

[0024] Figure 10 This is a perspective view of an engine tilting test apparatus according to an embodiment of this application.

[0025] Explanation of main component symbols

[0026] Test apparatus 100

[0027] First bearing housing 100a

[0028] First rotating shaft 100b

[0029] Second bearing housing 100c

[0030] Second shaft 100d

[0031] Base 10

[0032] First turntable 20

[0033] End plate 21

[0034] Support plate 22

[0035] Containment cavity 20a

[0036] Second turntable 30

[0037] First drive mechanism 40

[0038] First gear 41

[0039] First gear 42

[0040] First driver 43

[0041] First deceleration component 44

[0042] Second drive mechanism 50

[0043] Second gear 51

[0044] Second gear 52

[0045] Second drive 53

[0046] Second deceleration component 54

[0047] First sensing mechanism, second sensing mechanism 60

[0048] First sensor, second sensor 61

[0049] First stator section, second stator section 61a

[0050] First rotor section, second rotor section 61b

[0051] Third sensing mechanism, fourth sensing mechanism 70

[0052] First mounting bracket, second mounting bracket 71

[0053] Adjustment groove 71a

[0054] First pointer, second pointer 72

[0055] Third sensor, fourth sensor 73

[0056] Limiting mechanism 80

[0057] Pin seat 81

[0058] Slide 81a

[0059] Locked segment 81a1

[0060] Transition section 81a2

[0061] Unlock segment 81a3

[0062] 81b perforation

[0063] Pin 82

[0064] Handle 83

[0065] Fifth sensor 84

[0066] Limit pin 90

[0067] Limiting grooves 41a, 51a Detailed Implementation

[0068] The technical solution of this application will now be described with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments.

[0069] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered to be "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered to be "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0071] One embodiment of this application provides a testing apparatus, including a base, a first turntable, a second turntable, a first driving mechanism, a second driving mechanism, a first sensing mechanism, and a second sensing mechanism. The first turntable is connected to the base and is rotatable about a first horizontal axis. The second turntable is connected to the first turntable and is rotatable about a second horizontal axis, which is perpendicular to the first horizontal axis. The second turntable is used to carry a test specimen. The first driving mechanism is disposed on the base and is used to drive the first turntable to rotate. The second driving mechanism is disposed on the first turntable and is used to drive the second turntable to rotate. The first sensing mechanism is used to sense a first rotation angle of the first turntable, so that the first driving mechanism controls the rotation of the first turntable in real time according to the first rotation angle. The second sensing mechanism is used to sense a second rotation angle of the second turntable, so that the second driving mechanism controls the rotation of the first turntable in real time according to the second rotation angle.

[0072] The aforementioned test apparatus senses the rotation angle of the first turntable and the second turntable through the first sensing mechanism, and then senses the position of the first turntable and the second turntable when they are rotated to the horizontal position and the two extreme angles through the second sensing mechanism. This allows the first drive mechanism and the second drive mechanism to adjust the rotation of the first turntable and the second turntable in real time, avoiding the second turntable from tilting excessively or being unable to be leveled, while achieving the purpose of precisely controlling the tilt angle of the second turntable.

[0073] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0074] Please see Figure 1 and Figure 2One embodiment of this application provides a testing device 100 for providing various tilt angles to a test specimen for tilting tests. The testing device 100 includes a base 10, a first turntable 20, a second turntable 30, a first drive mechanism 40, a second drive mechanism 50, a first sensing mechanism, a second sensing mechanism 60, a third sensing mechanism, and a fourth sensing mechanism 70.

[0075] The first turntable 20 is rotatably connected to the base 10 on opposite sides, and the first turntable 20 is able to rotate relative to the base 10 about the first horizontal axis X.

[0076] The second turntable 30 is rotatably connected to the first turntable 20 on both opposite sides, and the second turntable 30 can rotate relative to the first turntable 20 about a second horizontal axis Y, wherein the second horizontal axis Y is perpendicular to the first horizontal axis X. That is, the second turntable 30 rotates further on the basis of the rotation of the base 10, thereby achieving the tilting of the second turntable 30 relative to the horizontal plane to the required angle. The second turntable 30 is used to carry the test specimen.

[0077] The first drive mechanism 40 is mounted on the base 10 and is used to drive the first turntable 20 to rotate around the first horizontal axis X by a specified angle.

[0078] The second drive mechanism 50 is mounted on the first turntable 20 and is used to drive the second turntable 30 to rotate around the second horizontal axis Y by a specified angle.

[0079] The first sensing mechanism and the second sensing mechanism 60 are used to sense the first rotation angle of the first turntable 20 and the second rotation angle of the second turntable 30, respectively.

[0080] The third and fourth sensing mechanisms 70 are used to sense whether the first turntable 20 (corresponding to the first position) and the second turntable 30 (corresponding to the second position) have rotated to the horizontal position and the two extreme angle positions of clockwise and counterclockwise rotation, respectively.

[0081] When it is necessary to adjust the rotation of the first turntable 20 and the second turntable 30 to a set angle, the first drive mechanism 40 and the second drive mechanism 50 can drive the rotation of the first turntable 20 and the second turntable 30 according to the set angle. At the same time, the first sensing mechanism, the second sensing mechanism 60, the third sensing mechanism, and the fourth sensing mechanism 70 sense the rotation angle and position of the first turntable 20 and the second turntable 30. When the first sensing mechanism and the second sensing mechanism 60 sense that the rotation angle is the same as the set angle, they can force the first drive mechanism 40 and the second drive mechanism 50 to stop rotating the first turntable 20 and the second turntable 30, thereby achieving the purpose of precisely controlling the tilt angle of the second turntable 30. The third and fourth sensing mechanisms 70 can force the first drive mechanism 40 and the second drive mechanism 50 to stop rotating the first turntable 20 and the second turntable 30 when they sense that the first turntable 20 and the second turntable 30 have rotated to their maximum angle. This prevents the first turntable 20 and the second turntable 30 from rotating beyond the set angle when the first drive mechanism 40 and the second drive mechanism 50 or the first sensing mechanism and the second sensing mechanism 60 fail, thereby avoiding excessive tilting.

[0082] Please see Figures 1 to 4 In some embodiments, the test apparatus 100 further includes two first bearing seats 100a, two first rotating shafts 100b, two second bearing seats 100c, and two second rotating shafts 100d. The two first bearing seats 100a are disposed opposite each other on the base 10 along a first horizontal axis X. Each first bearing seat 100a is connected to a first rotating shaft 100b, and the axes of the two first rotating shafts 100b coincide with the first horizontal axis X. The two first rotating shafts 100b are respectively connected to opposite sides of the first turntable 20, enabling the first turntable 20 to rotate relative to the base 10. The two second bearing seats 100c are disposed opposite each other on the first turntable 20 along a second horizontal axis Y. Each second bearing seat 100c is connected to a second rotating shaft 100d, and the axes of the two second rotating shafts 100d coincide with the second horizontal axis Y. The two second rotating shafts 100d are respectively connected to opposite sides of the second turntable 30, enabling the second turntable 30 to rotate relative to the first turntable 20. As an example, the first bearing housing 100a and the second bearing housing 100c have a certain angular deviation compensation capability, and preferably are spherical bearings with self-aligning capability.

[0083] In some embodiments, the first drive mechanism 40 includes a first gear 41, a first gear 42, and a first driver 43. The first gear 41 is disposed on one side of the first turntable 20 along the first horizontal axis X, and the axis of the first gear 41 coincides with the axis of the first rotating shaft 100b. The first gear 42 meshes with the first gear 41, and the diameter of the first gear 42 is smaller than the diameter of the first gear 41. The first driver 43 is disposed on the base 10 and is used to drive the first gear 42 to rotate, thereby driving the first gear 41 to rotate, and in turn driving the first turntable 20 to rotate.

[0084] The second drive mechanism 50 includes a second gear disk 51, a second gear 52, and a second driver 53. The second gear disk 51 is located on one side of the second turntable 30 along the second horizontal axis Y, and the axis of the second gear disk 51 coincides with the axis of the second rotating shaft 100d. The second gear 52 meshes with the second gear disk 51, and the diameter of the second gear 52 is smaller than the diameter of the second gear disk 51. The second driver 53 drives the second gear 52 to rotate, thereby driving the second gear disk 51 to rotate, and in turn driving the second turntable 30 to rotate.

[0085] As an exemplary example, the first driver 43 and the second driver 53 are stepper motors, preferably high-torque stepper motors with a brake function, which have automatic brake positioning capability when the stepper motor is not working, thereby improving the tilt stability of the second turntable 30. Since neither the first turntable 20 nor the second turntable 30 needs to rotate more than 90 degrees, the first gear 41 and the second gear 51 are both semicircles with an arc of 180 degrees. The axis of the first gear 42 is located directly below the axis of the first gear 41, and the axis of the second gear 52 is located directly below the axis of the second gear 51. In other embodiments, the first gear 41 and the second gear 51 may also be circles with an arc of 360 degrees, so that the first turntable 20 and the second turntable 30 can rotate more than 90 degrees.

[0086] In some embodiments, the gear ratio i of the first gear 42 to the first gear disk 41 (the second gear 52 to the second gear disk 51) is 7.5, which can reduce the rotational speed of the first driver 43 and the second driver 53 transmitted to the first turntable 20 and the second turntable 30, and increase the driving torque output by the first driver 43 and the second driver 53.

[0087] In some embodiments, the first drive mechanism 40 further includes a first reduction assembly 44. The first reduction assembly 44 includes a first worm gear and a first worm (not shown). The first worm is connected to a first driver 43. The first worm gear is coaxially connected to a first gear 42. The first driver 43 can drive the first worm to rotate, so that the first worm drives the first worm gear to rotate, thereby causing the first worm gear to drive the first gear 42 to rotate synchronously. Similarly, the second drive mechanism 50 further includes a second reduction assembly 54. The second reduction assembly 54 includes a second worm gear and a second worm (not shown). The second worm is connected to the second driver 53. The second worm gear is coaxially connected to the second gear 52. The second driver 53 can drive the second worm to rotate, so that the second worm drives the second worm gear to rotate, thereby causing the second worm gear to drive the second gear 52 to rotate synchronously.

[0088] The experimental device 100 first reduces the unbalanced feedback torque of the second turntable 30 through the structure of the first gear disk 41, the first gear 42, the second gear disk 51, and the second gear 52. Then, the worm gear structure in the first reduction assembly 44 and the second reduction assembly 54 further reduces the unbalanced torque of the second turntable 30, thereby achieving a large reduction ratio. This reduces the feedback effect of the unbalanced torque to the first driver 43 and the second driver 53, improving the control capability of the tilt angle of the second turntable 30. Simultaneously, the worm gear mechanism has a self-locking capability, which further prevents excessive rotation of the second turntable 30 due to excessive unbalanced torque.

[0089] Please see Figure 5 In some embodiments, the first sensing mechanism and the second sensing mechanism 60 each include a first sensor and a second sensor 61. The first sensor 61 includes a first stator portion 61a and a first rotor portion 61b. The second sensor 61 includes a second stator portion 61a and a second rotor portion 61b. The first stator portion and the second stator portion 61 are fixedly disposed on the base 10 and the first turntable 20, respectively, and preferably disposed on the first bearing housing 100a and the second bearing housing 100c for easy installation. The first rotor portion and the second rotor portion 61b are respectively connected to the first rotating shaft 100b and the second rotating shaft 100d. The first stator portion and the second stator portion 61a can respectively sense the rotation angle of the corresponding first rotor portion and the second rotor portion 61b, thereby obtaining the real-time rotation angle of the first turntable 20 and the second turntable 30. As an example, both the first sensor and the second sensor 61 are angle encoders. Since the more lines inside the angle encoder, the higher the resolution of the sensor and the more accurate the measured angle, the first sensor and the second sensor 61 are preferably encoders with 5000 lines.

[0090] In some embodiments, the first sensing mechanism and the second sensing mechanism 60 can also sense whether the first rotating shaft 100b or the second rotating shaft 100d has rotated to a limit angle. The limit angle indicates that the first turntable 20 and the second turntable 30 have rotated to a set limit position. At this time, the first driver 43 and the second driver 53 stop driving to prevent the first turntable 20 and the second turntable 30 from over-rotating.

[0091] In some embodiments, the third sensing mechanism 70 includes a first mounting bracket 71, a first pointer 72, and a plurality of third sensors 73. The fourth sensing mechanism 70 includes a second mounting bracket 71, a second pointer 72, and a plurality of fourth sensors 73. The first mounting bracket and the second mounting bracket 71 are respectively disposed on the base 10 and the first turntable 20, preferably respectively disposed on the first bearing seat 100a or the second bearing seat 100c for easy installation. One end of the first pointer and the second pointer 72 are respectively disposed on the first rotor section and the second rotor section 61b, and the other end respectively points to the corresponding first mounting bracket and the second mounting bracket 71. The first mounting bracket 71 is provided with at least three third sensors 73, corresponding to the first horizontal position, the first extreme angle position, and the second extreme angle position of the first turntable 20. The second mounting bracket 71 is provided with at least three fourth sensors 73, corresponding to the second horizontal position, the third extreme angle position, and the fourth extreme angle position of the second turntable 30. The third sensors and the fourth sensors 73 can respectively sense the approach of the corresponding first pointer and the second pointer 72. When the three third sensors and fourth sensors 73 on each of the first and second mounting brackets 71 sense the corresponding first and second pointers 72, the situations correspond to the horizontal position and the two extreme clockwise and counterclockwise rotation angles of the first turntable 20 and the second turntable 30, respectively. As an example, the first and second mounting brackets 71 are arc-shaped, with one third sensor and one fourth sensor 73 located directly above the first rotating shaft 100b and the second rotating shaft 100d, respectively, and two other third sensors and fourth sensors 73 symmetrically located on either side, so that the extreme clockwise and counterclockwise rotation angles of the first turntable 20 and the second turntable 30 are the same. The first and second mounting brackets 71 may also be equipped with four, five, or more third sensors and fourth sensors 73 to sense the different rotation angles of the first turntable 20 and the second turntable 30, thereby more accurately sensing the rotation angles of the first turntable 20 and the second turntable 30.

[0092] In use, when the third and fourth sensors 73 at the corresponding extreme angle positions sense the corresponding first and second pointers 72, it indicates that the first turntable 20 and the second turntable 30 have rotated to the set extreme angle. At this time, the first driver 43 and the second driver 53 stop driving to prevent the first turntable 20 and the second turntable 30 from over-rotating. Even if the first and second sensors 61 fail or malfunction, the third and fourth sensors 73 at the two extreme positions can still control the first turntable 20 and the second turntable 30 to prevent them from rotating beyond the extreme angle. During leveling, when the third and fourth sensors 73 at the corresponding horizontal positions sense the corresponding first and second pointers 72, it indicates that the first turntable 20 and the second turntable 30 have rotated to the horizontal position. At this time, the first driver 43 and the second driver 53 stop driving, thereby keeping the first turntable 20 and the second turntable 30 in a horizontal state.

[0093] In some embodiments, the first mounting bracket and the second mounting bracket 71 are both provided with adjustment slots 71a. Each third sensor and the fourth sensor 73 is located in the corresponding adjustment slot 71a and can be adjusted relative to the first mounting bracket and the second mounting bracket 71, thereby adjusting the limit angle that the first turntable 20 and the second turntable 30 can rotate to accommodate different types of test specimens.

[0094] Please see Figure 6 In some embodiments, the test apparatus 100 further includes multiple limiting mechanisms 80. Each limiting mechanism 80 includes a pin seat 81, a pin 82, and a handle 83. The pin seat 81 is disposed on the base 10 and the first turntable 20. The pin seat 81 has a communicating groove 81a and a through hole 81b. The pin 82 slides and rotates along the axis through the through hole 81b, with one end extending out of the through hole 81b. One end of the handle 83 extends into the groove 81a and connects to the pin 82, while the other end extends out of the groove 81a. The first turntable 20 and the second turntable 30 have insertion holes (not shown) corresponding to the positions of the pin 82. The handle 83 can control the pin 82 to slide along the through hole 81b to insert or remove it from the insertion hole, thereby locking or unlocking the rotation of the first turntable 20 and the second turntable 30.

[0095] As an example, when the pin 82 is inserted into the socket, the first turntable 20 and the second turntable 30 are locked in a horizontal position. In use, before testing, the pin 82 is pulled out of the socket to unlock the rotation of the first turntable 20 and the second turntable 30. After testing, the pin 82 is inserted into the socket to lock the first turntable 20 and the second turntable 30, preventing rotation caused by uneven weight distribution.

[0096] In some embodiments, the slide 81a includes a locking section 81a1, a transition section 81a2, and an unlocking section 81a3 connected in sequence. The plane of the transition section 81a2 is parallel to the direction of movement of the pin 82. The planes of the locking section 81a1 and the unlocking section 81a3 are perpendicular to the plane of the transition section 81a2. The handle 83 can move along the axis of the pin 82 within the transition section 81a2 to extend and retract the pin 82 relative to the pin seat 81. The handle 83 can rotate about the axis of the pin 82 within the locking section 81a1 and the unlocking section 81a3. The pin seat 81 can restrict the handle 82 located within the locking section 81a1 and the unlocking section 81a3, thereby fixing the position of the pin 82 relative to the pin seat 81.

[0097] In some embodiments, each limiting mechanism 80 further includes a fifth sensor 84. The fifth sensor 84 is located within the unlocking section 81a3 and is used to sense the handle 83. When the fifth sensor 84 senses the handle 83, it indicates that the pin 82 has been pulled out of the socket, that is, the pin 82 has unlocked the first turntable 20 or the second turntable 30. At this time, the first driver 43 and the second driver 53 can operate to drive the first turntable 20 or the second turntable 30 to rotate, avoiding damage caused by forcibly rotating the first turntable 20 or the second turntable 30 if the pin 82 has not successfully unlocked it. When the fifth sensor 84 does not sense the handle 83, it indicates that the pin 82 has not been pulled out of the socket, that is, the pin 82 is still locked to the first turntable 20 or the second turntable 30. At this time, the first driver 43 and the second driver 53 cannot operate.

[0098] Please see Figure 7 and Figure 8 In some embodiments, a limiting pin 90 is also installed on the base 10 and the first turntable 20. The first gear disk 41 and the second gear disk 51 are respectively provided with limiting grooves 41a and 51a. The end of the limiting pin 90 can be inserted into the limiting grooves 41a and 51a. The limiting grooves 41a and 51a extend along an arc. During the rotation of the first gear disk 41 and the second gear disk 51, the limiting pin 90 can slide within the limiting grooves 41a and 51a until the limiting pin 90 contacts the end face of the limiting grooves 41a and 51a, so that the limiting pin 90 can stop the rotation of the first gear disk 41 and the second gear disk 51, thereby limiting the extreme angles of the first gear disk 41 and the second gear disk 51.

[0099] Please see Figure 9In some embodiments, the first turntable 20 includes two end plates 21 and two support plates 22. The end plates 21 are arranged opposite each other along the first horizontal axis X and are respectively connected to the first rotating shaft 100b on the corresponding side. The two support plates 22 are arranged opposite each other along the second horizontal axis Y and are respectively connected to the end plates 21 at both ends. The end plates 21 and the two support plates 22 surround to form a receiving cavity 20a, which is used to receive the second turntable 30. Two second bearing seats 100c are respectively disposed at the center of the top of the two support plates 22. The height of the top of the support plate 22 is lower than the height of the top of the end plate 21, which allows the axis of the second rotating shaft 100d to be in the same plane as the axis of the first rotating shaft 100b, thereby reducing the additional torque generated by the weight of the second turntable 30 after tilting, and thus reducing the load.

[0100] Please see Figure 10 In one embodiment of this application, an engine tilting test apparatus 200 is also provided, including a load drive 210 and a test device 100. The load drive 210 is disposed on the top surface of a second turntable 30. The second turntable 30 is used to support the engine 300 to be tested. The load drive 210 is used to provide a test load to the engine 300. The test device 100 is used to adjust the tilt angle of the engine 300 and the load drive 210 to examine the lubrication performance and working performance of the engine under different tilt angles and attitudes.

[0101] Furthermore, those skilled in the art should recognize that the above embodiments are merely illustrative of this application and are not intended to limit this application. Any appropriate changes and variations made to the above embodiments within the essential spirit and scope of this application fall within the scope of this application's disclosure.

Claims

1. A test device, characterized in that The test device comprises: a base; a first rotating table connected to the base and capable of rotating around a first horizontal axis; a second rotating table connected to the first rotating table and capable of rotating around a second horizontal axis; a first driving mechanism connected to the first rotating table and used for driving the first rotating table to rotate; a second driving mechanism connected to the second rotating table and used for driving the second rotating table to rotate; a first sensing mechanism used for sensing a first rotation angle of the first rotating table, so that the first driving mechanism controls the first rotating table to rotate in real time according to the first rotation angle; a second sensing mechanism used for sensing a second rotation angle of the second rotating table, so that the second driving mechanism controls the first rotating table to rotate in real time according to the second rotation angle; a third sensing mechanism comprising a first mounting frame, a first pointer and at least three third sensors, the first mounting frame is arranged on the base, one end of the first pointer is connected to the first rotating table, the other end of the first pointer points to the first mounting frame, the third sensors are arranged on the first mounting frame, the at least three third sensors can respectively sense three positions of the pointer corresponding to the first rotating table at a first horizontal position, a first limit rotation angle position and a second limit rotation angle position, so that the first driving mechanism limits the rotation angle of the first rotating table according to the first horizontal position, the first limit rotation angle position and the second limit rotation angle position; a fourth sensing mechanism comprising a second mounting frame, a second pointer and at least three fourth sensors, the second mounting frame is arranged on the first rotating table, one end of the second pointer is connected to the second rotating table, the other end of the second pointer points to the second mounting frame, the fourth sensors are arranged on the second mounting frame, the at least three fourth sensors can respectively sense three positions of the pointer corresponding to the second rotating table at a second horizontal position, a third limit rotation angle position and a fourth limit rotation angle position, so that the second driving mechanism limits the rotation angle of the second rotating table according to the second horizontal position, the third limit rotation angle position and the fourth limit rotation angle position; the first mounting frame and the second mounting frame are arc-shaped.

2. The test device of claim 1, wherein: The test device further comprises two first bearing seats, two first rotating shafts, two second bearing seats and two second rotating shafts, the two first bearing seats are oppositely arranged on the base along the direction of the first horizontal axis, the two first rotating shafts are arranged on opposite sides of the first rotating table along the direction of the first horizontal axis and are connected to the corresponding first bearing seats, the two second bearing seats are oppositely arranged on the first rotating table along the direction of the second horizontal axis, and the two second rotating shafts are arranged on opposite sides of the second rotating table along the direction of the second horizontal axis and are connected to the corresponding second bearing seats.

3. The test device of claim 2, wherein: The first driving mechanism comprises a first gear disc, a first gear and a first driver. The first gear disc is arranged on the first rotating table and coincides with the axis of the first rotating shaft. The first gear is engaged with the first gear disc. The first driver is used to drive the first gear to rotate and drive the first gear disc to rotate, thereby driving the first rotating table to rotate. The second driving mechanism comprises a second gear disc, a second gear and a second driver. The second gear disc is arranged on the second rotating table and coincides with the axis of the second rotating shaft. The second gear is engaged with the second gear disc. The second driver is used to drive the second gear to rotate and drive the second gear disc to rotate, thereby driving the second rotating table to rotate.

4. The test device of claim 2, wherein: The first sensing mechanism comprises a first sensor, which comprises a first stator and a first rotor. The first stator is arranged on the base. The first rotor is connected to the first rotating shaft. The first stator can sense the rotation angle of the first rotor to sense the rotation angle of the first rotating table. The second sensing mechanism comprises a second sensor, which comprises a second stator and a second rotor. The second stator is arranged on the first rotating table. The second rotor is connected to the second rotating shaft. The second stator can sense the rotation angle of the second rotor to sense the rotation angle of the second rotating table.

5. The test device of claim 1, wherein: The test device further comprises a plurality of limiting mechanisms. Each limiting mechanism comprises a pin seat, a pin and a handle. The pin seat is arranged on the base and the first rotating table. The pin seat is provided with a sliding groove and a through hole in communication. The pin slides through the through hole along an axis. One end of the handle extends into the sliding groove and is connected to the pin. The other end of the handle extends out of the sliding groove. The first rotating table and the second rotating table are provided with a pin hole corresponding to the pin. The handle can control the pin to be inserted into or pulled out of the pin hole, so as to lock or unlock the first rotating table and the second rotating table.

6. The test device of claim 5, wherein: The sliding groove comprises a locking section, a transition section and an unlocking section in sequence. The handle can move along the axis of the pin in the transition section. The handle can rotate around the axis of the pin in the locking section and the unlocking section, so that the pin seat can limit the handle in the locking section and the unlocking section, thereby fixing the position of the pin.

7. The test device of claim 6, wherein: Each limiting mechanism further comprises a fifth sensor. The fifth sensor is located in the unlocking section and is used to sense the handle to sense whether the pin unlocks the first rotating table or the second rotating table.

8. The test device of claim 3, wherein: The first driving mechanism further comprises a first speed reduction assembly, the first speed reduction assembly comprises a first worm wheel and a first worm, the first worm is connected with the first driver, the first worm wheel is coaxially connected with the first gear, the first driver drives the first worm to rotate, the first worm drives the first worm wheel to rotate, and the first worm wheel drives the first gear to synchronously rotate; the second driving mechanism further comprises a second speed reduction assembly, the second speed reduction assembly comprises a second worm wheel and a second worm, the second worm is connected with the second driver, the second worm wheel is coaxially connected with the second gear, the second driver drives the second worm to rotate, the second worm drives the second worm wheel to rotate, and the second worm wheel drives the second gear to synchronously rotate.

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