A testing device

Abstract

The present invention belongs to the technical field of automobile parts testing, and discloses a testing device. The testing device comprises: a measuring bracket, an input mechanism, an output mechanism, and a loading mechanism. The measuring bracket is used to carry a workpiece, and the output end of the input mechanism is arranged on one side of the measuring bracket and connected to the workpiece; the output mechanism is arranged on the other side of the measuring bracket and connected to the output end of the workpiece. Under the drive of the input mechanism, the workpiece can rotate relative to the measuring bracket, and the power is output to the output mechanism for workpiece fatigue detection; the loading mechanism can load the workpiece along the radial direction of the workpiece. The testing device performs fatigue tests on the workpiece according to different loading loads, thereby improving the precision and accuracy of the measurement. At the same time, compared with the prior art, during the measurement process, the gear is directly mounted on the measuring bracket, and the internal wear of the gear can be intuitively seen, which is convenient for monitoring and observation.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts testing, and in particular to a testing device. Background Art

[0002] The gearbox is a very important component in a vehicle. It produces speed and torque changes through different gear combinations to change the transmission ratio, thereby increasing the torque and speed of the drive wheels.

[0003] The existing gearbox gear test is to place the gearbox housing directly on the gearbox gear test device. The internal wear of the gearbox gear cannot be seen, and since the load cannot be applied in the radial direction of the gear, the gear stress fatigue measurement result is single, resulting in low gear stress fatigue measurement accuracy. Summary of the invention

[0004] The object of the present invention is to provide a testing device which can load a workpiece along a radial direction and improve the measurement accuracy of the workpiece.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A testing device, comprising:

[0007] A measuring support, which is used to carry a workpiece;

[0008] An input mechanism, wherein an output end of the input mechanism is disposed through one side of the measuring bracket and connected to the workpiece;

[0009] An output mechanism, which is disposed on the other side of the measuring bracket and connected to the output end of the workpiece. Under the drive of the input mechanism, the workpiece can rotate relative to the measuring bracket and output power to the output mechanism for workpiece fatigue detection;

[0010] A loading mechanism is provided, wherein the loading mechanism can load the workpiece along the radial direction of the workpiece.

[0011] Preferably, the measuring support comprises a substrate, on which is provided:

[0012] A first outer plate, wherein the first outer plate is provided with a first through hole for the input mechanism to pass through;

[0013] a second outer plate, wherein the second outer plate is provided with a second through hole for the output mechanism to pass through;

[0014] The inner plate is located between the first outer plate and the second outer plate. The first outer plate, the second outer plate and the inner plate are all provided with mounting holes for workpieces to pass through.

[0015] Preferably, the first outer plate, the second outer plate and the inner plate are arranged in parallel and spaced apart, and all three are vertically arranged on the base plate through a fixing seat.

[0016] Preferably, a bearing is installed in the mounting hole, and the workpiece passes through the bearing.

[0017] Preferably, the first outer panel and the inner panel are connected to each other via a first connecting rod, and the second outer panel and the inner panel are connected to each other via a second connecting rod.

[0018] Preferably, the loading mechanism includes a load driving source and a loading rod connected to the output end of the load driving source, a clamp is provided on the workpiece, and the load driving source drives the loading rod to move toward the direction close to the measuring bracket and abut against the clamp.

[0019] Preferably, the loading mechanism further comprises:

[0020] A column, wherein a guide seat is arranged on the column;

[0021] A double guide rod assembly is arranged between the output end of the load driving source and the loading rod. The double guide rod assembly passes through the guide seat and is slidably matched with the guide seat.

[0022] Preferably, the loading mechanism further comprises:

[0023] A bearing seat, which is arranged on the measuring bracket;

[0024] A linear bearing is arranged in the bearing seat, and the loading rod passes through the linear bearing and is slidably matched with the linear bearing.

[0025] Preferably, the input mechanism comprises an input fixing seat and an input driving source arranged on the input fixing seat.

[0026] Preferably, the output mechanism comprises an output fixing seat and an output actuator arranged on the output fixing seat.

[0027] Beneficial effects of the present invention:

[0028] The test device provided by the present invention, after the driving force of the input mechanism is transmitted to the workpiece, the output mechanism outputs the force and fatigue of the components in the gear set of the gearbox, and the loading mechanism can load the workpiece along the radial direction of the workpiece, and the workpiece is fatigue tested for different loading loads, thereby improving the measurement precision and accuracy. At the same time, compared with the prior art, during the measurement process, the gear is directly mounted on the measurement bracket, and the internal wear of the gear can be intuitively seen, which is convenient for monitoring and observation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the testing device of the present invention;

[0030] Figure 2 is a schematic structural diagram of the testing device of the present invention without hiding the loading mechanism;

[0031] Figure 3 It is a schematic diagram of the structure of the measuring bracket in the testing device of the present invention;

[0032] Figure 4 It is a structural schematic diagram of the loading mechanism in the testing device of the present invention.

[0033] In the figure:

[0034] 1. Measuring bracket; 2. Input mechanism; 3. Output mechanism; 4. Loading mechanism; 500, workpiece;

[0035] 11. Base plate; 12. First outer plate; 13. Second outer plate; 14. Inner plate; 15. Mounting hole; 16. First connecting rod; 17. Second connecting rod; 18. Fixed seat; 19. Bearing;

[0036] 121, first through hole; 131, second through hole;

[0037] 21. Input fixing seat; 22. Input driving source;

[0038] 31. Output fixing seat; 32. Output actuator;

[0039] 41. Loading rod; 42. Clamp; 43. Column; 44. Guide seat; 45. Double guide rod assembly; 46. Bearing seat; 47. Linear bearing. DETAILED DESCRIPTION

[0040] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0041] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0043] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0044] This embodiment provides a testing device for testing a gearbox gear, such as Figure 1 As shown, the test device includes a measuring bracket 1, an input mechanism 2, an output mechanism 3 and a loading mechanism 4. The measuring bracket 1 is used as a supporting structure to carry a workpiece 500, and the workpiece 500 is specifically a gearbox gear. The input mechanism 2 and the output mechanism 3 are respectively located on both sides of the measuring bracket 1, and the loading mechanism 4 is located on either side of the other two sides of the measuring bracket 1, that is, the input mechanism 2 and the output mechanism 3 are arranged along the axial direction of the workpiece 500, and the loading mechanism 4 is arranged along the radial direction of the workpiece 500, so that the input mechanism 2, the output mechanism 3 and the loading mechanism 4 surround the periphery of the measuring bracket 1. The output end of the input mechanism 2 is arranged on one side of the measuring bracket 1 and connected to the workpiece 500, and the input mechanism 2 is arranged on the other side of the measuring bracket 1 and connected to the output end of the workpiece 500. Under the drive of the input mechanism 2, the workpiece 500 can rotate relative to the measuring bracket 1, and output power to the output mechanism 3, so as to realize fatigue detection of the workpiece 500. The loading mechanism 4 can load the workpiece 500 along the radial direction of the workpiece 500, and perform a clearance test between the gear and the shaft in the workpiece 500 and a gear shaft stress fatigue test, so that the gear stress fatigue measurement result is more accurate.

[0045] The test device provided in this embodiment, after the driving force of the input mechanism 2 is transmitted to the workpiece 500, the output mechanism 3 outputs the force and fatigue of the components in the gear set of the gearbox, and the loading mechanism 4 can load the workpiece 500 along the radial direction of the workpiece 500, and perform fatigue tests on the workpiece 500 for different loading loads, thereby improving the precision and accuracy of the measurement. At the same time, compared with the prior art, during the measurement process, the gear is directly mounted on the measuring bracket 1, and the internal wear of the gear can be intuitively seen, which is convenient for monitoring and observation.

[0046] like Figure 2As shown, the input mechanism 2 includes an input fixed seat 21 and an input drive source 22 disposed on the input fixed seat 21. The input fixed seat 21 is used to carry and fix the input drive source 22. The input drive source 22 is specifically a hydraulic rotary cylinder. Since the output end of the input drive source 22 is connected to the workpiece 500, the input drive source 22 can drive the workpiece 500 to rotate. At the same time, the output mechanism 3 includes an output fixed seat 31 and an output actuator 32 disposed on the output fixed seat 31. The output fixed seat 31 is used to carry and fix the output actuator 32. The output actuator 32 is specifically a hydraulic rotary cylinder. An intermediate gear is meshed at the output end of the workpiece 500, and splines are circumferentially arranged at the input end of the output actuator 32. A spline groove for clamping the spline is circumferentially arranged on the inner wall of the center hole of the intermediate gear. The input end of the output actuator 32 is connected to the intermediate gear through the spline, so that the output end of the workpiece 500 transmits power to the output actuator 32 through the intermediate gear, thereby evaluating and testing the fatigue performance of the workpiece 500 according to the input value of the input drive source 22 and the output value of the output actuator 32.

[0047] like Figure 2-3 As shown, the measurement bracket 1 includes a base plate 11. The base plate 11 serves as a measurement base and plays a supporting role. A first outer plate 12, a second outer plate 13 and an inner plate 14 are vertically arranged on the base plate 11. The three are arranged in parallel and spaced apart. The inner plate 14 is located between the first outer plate 12 and the second outer plate 13. In order to achieve a fixed connection between the base plate 11 and the first outer plate 12, the second outer plate 13 and the inner plate 14, the three are vertically arranged on the base plate 11 through a fixed seat rod 18. In order to further enhance the stabilizing effect, the first outer plate 12 and the inner plate 14 are connected to each other through a plurality of first connecting rods 16, and the second outer plate 13 and the inner plate 14 are connected to each other through a plurality of second connecting rods 17, wherein the number of the first connecting rods 16 and the second connecting rods 17 are both four, and the specific number can be adjusted according to actual needs. The first connecting rod 16 is respectively passed through the four corners of one side of the inner plate 14, and the second connecting rod 17 is respectively passed through the four corners of the other side of the inner plate 14, so that the first outer plate 12, the second outer plate 13 and the inner plate 14 are connected to form a whole, thereby increasing the structural stability of the measuring bracket 1.

[0048] Furthermore, in order to facilitate the insertion of the input mechanism 2 and the output mechanism 3, a first through hole 121 for the input mechanism 2 to pass through is provided on the first outer plate 12, and a second through hole 131 for the output mechanism 3 to pass through is provided on the second outer plate 13. In order to enable the workpiece 500 to rotate relative to the measuring bracket, mounting holes 15 for the workpiece 500 to pass through are provided on the first outer plate 12, the second outer plate 13 and the inner plate 14. A bearing 19 (such as Figure 2As shown), the workpiece 500 is passed through the bearing 19 to facilitate the smooth rotation of the workpiece 500, thereby facilitating fatigue performance testing of the workpiece 500.

[0049] like Figure 4 As shown, in order to realize that the loading mechanism 4 can apply load along the radial direction of the workpiece 500, the loading mechanism 4 includes a load driving source (not shown in the figure) and a loading rod 41 connected to the output end of the load driving source, and the load driving source is specifically a private service hydraulic cylinder. In order to prevent the loading rod 41 from directly acting on the workpiece 500 and easily damaging the workpiece 500, a clamp 42 is sleeved on the workpiece 500. The load driving source drives the loading rod 41 to move in the direction close to the measuring bracket 1 and abuts against the clamp 42, so as to apply load to the workpiece 500 and drive the workpiece 500 to move, so as to realize the clearance between the gear and the gear shaft and the gear shaft fatigue performance test.

[0050] Furthermore, in order to improve the accuracy of load application, a double guide rod assembly 45 is provided between the output end of the load driving source and the loading rod 41. The double guide rod assembly 45 specifically includes two parallel guide rods arranged at intervals, and the two ends of each guide rod are respectively connected to the output end of the load driving source and the loading rod 41. At the same time, a column 43 is provided between the load driving source and the measuring bracket 1, and a guide seat 44 is correspondingly provided on the side of the column 43 facing the guide rod. The guide rod passes through the guide seat 44. Through the sliding cooperation between the guide rod and the guide seat 44, when the stroke of the loading rod 41 is large, a guiding effect is achieved, thereby enhancing the stability of the loading rod 41 during movement.

[0051] In order to further improve the stability of the loading rod 41, a bearing seat 46 is further provided between the second outer plate 13 and the inner plate 14, a linear bearing 47 is provided in the bearing 19 shaft, and the loading rod 41 is passed through the linear bearing 47 and slidably cooperates with the linear bearing 47. The loading rod 41 can slide relative to the linear bearing 47, and the linear bearing 47 guides the loading rod 41, thereby improving the stability and accuracy of the loading rod 41 acting on the clamp 42.

[0052] The working process of the test device provided in this embodiment is as follows:

[0053] The input driving source 22 can drive the workpiece 500 to rotate, and the output end of the workpiece 500 transmits power to the output actuator 32 through the intermediate gear, so that the fatigue performance of the workpiece 500 is evaluated and tested according to the input value of the input driving source 22 and the output value of the output actuator 32;

[0054] The load driving source drives the double guide rod assembly 45 and drives the loading rod 41 to move toward the measuring bracket 1, so that the loading rod 41 abuts against the clamp 42, so as to apply load to the workpiece 500 and drive the workpiece 500 to move, thereby realizing the clearance between the gear and the shaft and the gear shaft fatigue performance test.

[0055] In the description herein, it should be understood that the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0056] In the description of this specification, the description with reference to the terms "an embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example.

[0057] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A testing device, characterized in that: For testing transmission gear sets, including: A measuring support (1) for carrying a workpiece (500); An input mechanism (2), wherein an output end of the input mechanism (2) is disposed through one side of the measuring bracket (1) and connected to the workpiece (500); an output mechanism (3), the output mechanism (3) being arranged on the other side of the measuring bracket (1) and connected to the workpiece (500), and under the drive of the input mechanism (2), the workpiece (500) can rotate relative to the measuring bracket (1) and output power to the output mechanism (3); A loading mechanism (4), wherein the loading mechanism (4) is capable of applying a load to the workpiece (500) along a radial direction of the workpiece (500); The loading mechanism (4) comprises a load driving source and a loading rod (41) connected to an output end of the load driving source, a clamp (42) is sleeved on the workpiece (500), and the load driving source drives the loading rod (41) to move in a direction close to the measuring bracket (1) and abut against the clamp (42); The loading mechanism (4) further comprises: A column (43), wherein a guide seat (44) is provided on the column (43); A double guide rod assembly (45) is disposed between the output end of the load driving source and the loading rod (41), the double guide rod assembly (45) passing through the guide seat (44) and slidingly engaging with the guide seat (44); The loading mechanism (4) further comprises: A bearing seat (46) disposed on the measuring bracket (1); A linear bearing (47) is disposed in the bearing seat (46), and the loading rod (41) is passed through the linear bearing (47) and slidably engaged therewith; The measuring support (1) comprises a substrate (11), on which the following is arranged: A first outer plate (12) having a first through hole (121) for the input mechanism (2) to pass through; A second outer plate (13) having a second through hole (131) for the output mechanism (3) to pass through; an inner plate (14) located between the first outer plate (12) and the second outer plate (13), wherein the first outer plate (12), the second outer plate (13) and the inner plate (14) are all provided with mounting holes (15) for the workpiece (500) to pass through; The first outer plate (12), the second outer plate (13) and the inner plate (14) are arranged in parallel and at intervals, and all three are vertically arranged on the base plate (11) via a fixed seat rod (18).

2. The testing device according to claim 1, characterized in that: A bearing (19) is installed in the installation hole (15), and the workpiece (500) is inserted into the bearing (19).

3. The testing device according to claim 2, characterized in that: The first outer panel (12) and the inner panel (14) are connected to each other via a first connecting rod (16), and the second outer panel (13) and the inner panel (14) are connected to each other via a second connecting rod (17).

4. The testing device according to claim 1, characterized in that: The input mechanism (2) comprises an input fixing seat (21) and an input driving source (22) arranged on the input fixing seat (21).

5. The testing device according to claim 1, characterized in that: The output mechanism (3) comprises an output fixing seat (31) and an output actuator (32) arranged on the output fixing seat (31).

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