Device and method for testing commercial vehicle drive axle housing

Abstract

The invention discloses a device and method for testing a commercial vehicle drive axle housing, and relates to the technical field of automobile testing, two fixing assemblies of the device are arranged on a floor platform at intervals and used for fixing a plate spring seat of the drive axle housing, and two sets of load loading assemblies are arranged on the two sides of the two fixing assemblies and the drive axle housing. The two groups of load loading assemblies are oppositely arranged and are both connected with the wheel end of the drive axle housing, the controller is connected with the two groups of load loading assemblies, the two groups of load loading assemblies are controlled to apply a vehicle running direction load and a vertical direction load to the wheel end of the drive axle housing according to an initial load value, and load data actually loaded to the wheel end of the drive axle housing are obtained; the initial load value is corrected according to the load data actually loaded on the wheel end of the drive axle housing, and the longitudinal load and the vertical load borne by the drive axle housing in the vehicle driving direction are simulated, so that the longitudinal stress and deformation data of the drive axle housing in actual operation can be accurately monitored and acquired; and the loading test result is consistent with the actual working condition of the whole vehicle.

Description

Technical Field

[0001] The invention relates to the technical field of automobile testing, and in particular to a device and method for testing a drive axle housing of a commercial vehicle. Background Art

[0002] The drive axle is located at the end of the transmission system, which can change the speed and torque from the transmission and transmit them to the drive wheels. The drive axle is generally composed of a main reducer, a differential, a wheel transmission device and a drive axle housing. Some steering drive axles also include constant velocity joints. Under different driving conditions, the drive axle housing will be subjected to alternating random loads of various forms and amplitudes, especially on uneven roads, where it bears both large vertical impact loads and longitudinal impact loads. In addition to meeting the specified bending stiffness and bending fatigue service life requirements, commercial vehicle drive axles must also meet the longitudinal stiffness and longitudinal fatigue life requirements caused by longitudinal impact loads.

[0003] In the prior art, the drive axle housing leaf spring seat is fixed to the support platform, the degrees of freedom in the X direction (vehicle driving direction) and Y direction (lateral direction) are constrained, the Z direction (vertical direction) degree of freedom is released, and a vertical bending load is applied in the Z direction to achieve static stiffness and dynamic bending fatigue tests.

[0004] However, this device can only simulate the vertical bending load on the drive axle housing under the working conditions of the whole vehicle, and it is difficult to simulate the longitudinal load in the direction of vehicle travel, which makes it difficult to monitor the longitudinal force and deformation of the drive axle housing in actual operation, making the loading test results of the drive axle housing inconsistent with the actual working conditions of the whole vehicle. Summary of the invention

[0005] The embodiment of the present invention provides a device and method for testing the drive axle housing of a commercial vehicle, so as to solve the technical problem that the existing testing device in the related art can only simulate the vertical bending load on the drive axle housing under the working condition of the whole vehicle, but is difficult to simulate the longitudinal load in the driving direction of the vehicle, resulting in difficulty in monitoring the longitudinal force and deformation of the drive axle housing in actual operation, and making the loading test result of the drive axle housing inconsistent with the actual working condition of the whole vehicle.

[0006] In a first aspect, a device for testing a commercial vehicle drive axle housing is provided, comprising:

[0007] Floor platforms;

[0008] Two fixing assemblies, the two fixing assemblies are arranged on the floor platform at intervals and are used to fix the leaf spring seat of the drive axle housing;

[0009] Two groups of load loading components, the two groups of load loading components are arranged on both sides of the two fixing components and the drive axle housing, the two groups of load loading components are arranged opposite to each other and are both connected to the wheel ends of the drive axle housing;

[0010] A controller is connected to the two sets of load-applying components and is configured to:

[0011] Controlling the two groups of load applying components to apply vehicle driving direction load and vertical direction load to the wheel end of the drive axle housing according to the initial load value;

[0012] The load data actually loaded on the wheel end of the drive axle housing is obtained, and the initial load value is corrected according to the load data actually loaded on the wheel end of the drive axle housing.

[0013] In some embodiments, the device for testing a commercial vehicle drive axle housing further comprises:

[0014] A bottom plate, the bottom plate is arranged on the floor platform, and two of the fixing components are arranged at intervals on the bottom plate;

[0015] A crossbeam is disposed between the two fixing components and is respectively connected to the two fixing components.

[0016] In some embodiments, each of the fixing components comprises:

[0017] A support base, the support base is arranged on the bottom plate along a vertical direction, and a first inclined surface is arranged on the top of the support base;

[0018] A leaf spring connector, the leaf spring connector is arranged on the first inclined surface and connected thereto, and the leaf spring connector is used to fix the leaf spring seat of the drive axle housing.

[0019] In some embodiments, the leaf spring connector includes:

[0020] An I-beam, the I-beam being disposed on and connected to the first inclined plane;

[0021] A fixing plate is arranged above the I-beam, and the fixing plate and the top surface of the I-beam form a restraining space for fixing the leaf spring seat of the drive axle housing.

[0022] In some embodiments, the first set of load applying components includes:

[0023] Two first supports, the two first supports are spaced apart and arranged on one side of the floor platform, and the two first supports are inclined to the floor platform;

[0024] Two first actuators, one of the first actuators is correspondingly disposed on one of the first supports, and the extending direction of each of the first actuators is opposite to the tilting direction of the first support;

[0025] Two shaft heads, one of which is correspondingly arranged at the top end of one of the first actuators and connected to a wheel end of the drive axle housing, and is used to apply a vertical load to the wheel end of the drive axle housing.

[0026] In some embodiments, each of the first supports comprises:

[0027] a first bottom plate, the first bottom plate being arranged on one side of the floor platform;

[0028] a first support block, the first support block being arranged on the first bottom plate;

[0029] The first supporting surface is arranged on the inclined surface of the first supporting block, and the first supporting surface forms a preset angle with the floor platform.

[0030] In some embodiments, the second set of load applying components includes:

[0031] Two second supports, the two second supports are spaced apart and arranged at the other side of the floor platform, and the two second supports are inclined to the floor platform;

[0032] Two second actuators, one second actuator is correspondingly arranged on one second support, and the extension direction of each second actuator is opposite to the inclination direction of the second support, and one second actuator is arranged opposite to one first actuator;

[0033] Two connecting blocks, one of which is correspondingly arranged at the top end of one of the second actuators and connected to one of the shaft heads, are used to apply a load in the vehicle's driving direction to the wheel end of the drive axle housing.

[0034] In some embodiments, the second support comprises:

[0035] a second bottom plate, the second bottom plate being disposed on the other side of the floor platform;

[0036] a second support block, the second support block being disposed on the second bottom plate;

[0037] The second supporting surface is arranged on the inclined surface of the second supporting block, the second supporting surface and the floor platform also form a preset angle, and the second supporting surface is perpendicular to the first supporting surface.

[0038] In some embodiments, the device for testing a commercial vehicle drive axle housing further comprises:

[0039] A sensor is connected to the controller, and the sensor is used to be arranged on the drive axle housing to collect bending data and deformation data of the drive axle housing and send the data to the controller.

[0040] In a second aspect, a method for testing a commercial vehicle drive axle housing is provided, using the aforementioned device for testing a commercial vehicle drive axle housing, comprising:

[0041] Controlling two groups of load-applying components to apply vehicle travel direction load and vertical direction load to the wheel end of the drive axle housing according to the initial load value;

[0042] The load data actually loaded on the wheel end of the drive axle housing is obtained, and the initial load value is corrected according to the load data actually loaded on the wheel end of the drive axle housing.

[0043] The beneficial effects brought about by the technical solution provided by the present invention include:

[0044] The embodiment of the present invention provides a device and method for testing a drive axle housing of a commercial vehicle. The device for testing a drive axle housing of a commercial vehicle includes a floor platform, two fixing components, two groups of load loading components and a controller. The two fixing components are arranged on the floor platform at intervals and are used to fix the leaf spring seat of the drive axle housing. The two groups of load loading components are arranged on both sides of the two fixing components and the drive axle housing. The two groups of load loading components are arranged opposite to each other and are both connected to the wheel ends of the drive axle housing. The controller is connected to the two groups of load loading components and is configured to: control the two groups of load loading components to apply vehicle driving direction load and vertical direction load to the wheel ends of the drive axle housing according to the initial load value, obtain the load data actually loaded on the wheel ends of the drive axle housing, and correct the initial load value according to the load data actually loaded on the wheel ends of the drive axle housing, so as to simulate the longitudinal load and the vertical load received by the drive axle housing in the vehicle driving direction at the same time, accurately monitor and obtain the longitudinal force and deformation data of the drive axle housing in actual operation, so that the loading test result of the drive axle housing is consistent with the actual working condition of the whole vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 A schematic diagram of the overall structure of a device for testing a commercial vehicle drive axle housing provided by an embodiment of the present invention;

[0047] Figure 2 A schematic diagram of the specific structure of a device for testing a commercial vehicle drive axle housing provided by an embodiment of the present invention;

[0048] Figure 3 A block diagram of a method for testing a commercial vehicle drive axle housing provided by an embodiment of the present invention;

[0049] Reference numerals:

[0050] 1. Floor platform;

[0051] 2. Fixing assembly; 21. Support base; 211. First inclined plane; 22. Leaf spring connector; 221. I-beam; 222. Fixing plate;

[0052] 3. Drive axle housing;

[0053] 4. Load loading assembly; 41. First support; 411. First base plate; 412. First support block; 413. First support surface; 42. First actuator; 43. Shaft head; 44. Second support; 441. Second base plate; 442. Second support block; 443. Second support surface; 45. Second actuator; 46. Connecting block;

[0054] 5. Bottom plate;

[0055] 6. Crossbeam. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] The embodiment of the present invention provides a device and method for testing the drive axle housing of a commercial vehicle, which can solve the technical problem that the existing testing device in the related technology can only simulate the vertical bending load on the drive axle housing under the working condition of the whole vehicle, but it is difficult to simulate the longitudinal load in the driving direction of the vehicle, resulting in difficulty in monitoring the longitudinal force and deformation of the drive axle housing in actual operation, and making the loading test result of the drive axle housing inconsistent with the actual working condition of the whole vehicle.

[0058] Figure 1 A device for testing a commercial vehicle drive axle housing provided by an embodiment of the present invention comprises: a floor platform 1, two fixing components 2, two groups of load loading components 4 and a controller.

[0059] The two fixing components 2 are arranged at intervals on the floor platform 1, and are used to fix the leaf spring seat of the drive axle housing 3. The two groups of load loading components 4 are arranged on both sides of the two fixing components 2 and the drive axle housing 3. The two groups of load loading components 4 are arranged opposite to each other and are both connected to the wheel ends of the drive axle housing 3. The controller is connected to the two groups of load loading components 4, and is configured to: control the two groups of load loading components 4 to apply vehicle driving direction load and vertical direction load to the wheel ends of the drive axle housing 3 according to the initial load value, obtain the load data actually loaded on the wheel ends of the drive axle housing 3, and correct the initial load value according to the load data actually loaded on the wheel ends of the drive axle housing 3.

[0060] The device for testing the drive axle housing of a commercial vehicle according to an embodiment of the present invention is provided with a floor platform, two fixing components, two groups of load loading components and a controller. The two fixing components are arranged on the floor platform at intervals and are used to fix the leaf spring seat of the drive axle housing. The two groups of load loading components are arranged on both sides of the two fixing components and the drive axle housing. The two groups of load loading components are arranged opposite to each other and are both connected to the wheel ends of the drive axle housing. The controller is connected to the two groups of load loading components and is configured to: control the two groups of load loading components to apply vehicle driving direction load and vertical direction load to the wheel ends of the drive axle housing according to the initial load value, obtain the load data actually loaded on the wheel ends of the drive axle housing, and correct the initial load value according to the load data actually loaded on the wheel ends of the drive axle housing. The front ends of the two groups of load loading components are connected to the wheel ends of the drive axle housing. The center lines intersect vertically and are distributed on both sides of the drive axle housing, the load loading component on the right is used to apply a vertical bending load in the vertical direction Z, and the load loading component on the left is used to apply a longitudinal load in the vehicle driving direction X, and the drive axle housing is constrained in three directions of freedom by the two fixing components, and then the controller controls the two groups of load loading components to simultaneously apply vehicle driving direction load and vertical direction load to the wheel end of the drive axle housing, and the initial load value is corrected according to the load data actually loaded on the wheel end of the drive axle housing, and the load on the drive axle housing in the vehicle driving direction and the vertical direction are truly simulated. The longitudinal force and deformation data of the drive axle housing in actual operation can be accurately monitored and obtained, so that the force on the drive axle housing is consistent with its force direction in actual vehicle driving, and the loading test result of the drive axle housing is consistent with the actual working condition of the whole vehicle.

[0061] As an optional embodiment, in one embodiment of the invention, see Figure 2As shown, the device for testing the drive axle housing of a commercial vehicle also includes: a base plate 5 and a cross beam 6, the base plate 5 is arranged on the floor platform 1, two fixed components 2 are arranged on the base plate 5 at intervals, the cross beam 6 is arranged between the two fixed components 2, and the cross beam 6 is respectively connected to the two fixed components 2, the base plate 5 is used to fix the bottoms of the two fixed components 2, and the cross beam 6 is used to connect the two fixed components 2 and form an integral structure, thereby enhancing the stability and integrity of the structure.

[0062] As an optional embodiment, in one embodiment of the invention, see Figure 1 and Figure 2 As shown, each of the fixing components 2 includes: a support base 21 and a leaf spring connector 22, the support base 21 is arranged on the bottom plate 5 in the vertical direction, a first inclined surface 211 is provided on the top of the support base 21, the leaf spring connector 22 is arranged on the first inclined surface 211 and connected thereto, the leaf spring connector 22 is used to fix the leaf spring seat of the drive axle housing 3, the support base 21 is a trapezoidal structure with a small top and a large bottom and is fixed on the bottom plate 5, the first inclined surface 211 forms an angle of 45 degrees with the bottom plate 5, so that the drive axle housing 3 fixed on the top of the support base 21 also forms an angle of 45 degrees with the horizontal plane, which functions to reduce the overall height and assembly difficulty of the present invention, and maintain the inclination angle of the drive axle housing 3, truly simulate the fixed position and direction of the drive axle housing 3 under the working condition of the whole vehicle, and obtain the closest force state and data.

[0063] As an optional embodiment, in one embodiment of the invention, see Figure 2 As shown, the leaf spring connector 22 includes: an I-beam 221 and a fixing plate 222. The I-beam 221 is arranged on the first inclined surface 211 and connected thereto, and the fixing plate 222 is arranged above the I-beam 221. The fixing plate 222 and the top surface of the I-beam 221 form a constraint space for fixing the leaf spring seat of the drive axle housing 3. The I-beam 221 also forms an angle of 45 degrees with the bottom plate 5 for supporting and transmitting loads. When subjected to pressure, shear force and bending moment, the I-beam 221 can resist these forces through the reasonable distribution of its wing plate and web plate, thereby maintaining the stability and safety of the structure. The fixing plate 222 fixes the leaf spring seat of the drive axle housing 3 above the I-beam 221 through a long screw. By adjusting the height and width of the fixing plate 222, it can be used to fix the drive axle housing 3 of different models, and different models of drive axle housings can be tested, thereby improving the practicality of the present invention.

[0064] As an optional embodiment, in one embodiment of the invention, see Figure 2As shown, the first group of the load loading components 4 includes: two first supports 41, two first actuators 42 and two shaft heads 43, the two first supports 41 are spaced apart on one side of the floor platform 1, the two first supports 41 are inclined to the floor platform 1, one first actuator 42 is correspondingly arranged on one first support 41, and the extension direction of each first actuator 42 is opposite to the inclination direction of the first support 41, one shaft head 43 is correspondingly arranged at the top end of one first actuator 42 and connected to a wheel end of the drive axle housing 3, for applying a vertical load to the wheel end of the drive axle housing 3, the two first supports 41 are spaced apart on the right side of the floor platform 1, each of the first supports 41 is at an angle of 45 degrees to the floor platform 1 and is inclined outward along the right side direction of the floor platform 1, and each of the The first actuator 42 is tilted inward along the left side of the floor platform 1 and fixed on the first support 41. The two shaft heads 43 are hollow structures for fixing the wheel ends of the drive axle housing 3. The first actuator 42 is controlled by a controller to apply a vertical bending load of a certain amplitude to the wheel ends of the drive axle housing 3, that is, the first actuator 42 is controlled to apply tension to the drive axle housing 3 along its length direction. The loading amplitude of the vertical bending load is 0.5 times the rated design axle load, which remains unchanged during the test. The load of a single first actuator 42 is set to 0.5 times the design axle load of the drive axle housing 3, then the Z-direction vertical bending load at both ends of the drive axle housing 3 is 1 times the rated design axle load, and the test loading frequency is 0 Hz, simulating the vertical bending load in the vertical direction Z generated when the drive axle housing 3 is subjected to the weight of the cargo and the impact of the ground during the driving process of the vehicle.

[0065] As an optional embodiment, in one embodiment of the invention, see Figure 2 As shown, each of the first supports 41 includes: a first base plate 411, a first support block 412 and a first support surface 413, the first base plate 411 is arranged on one side of the floor platform 1, the first support block 412 is arranged on the first base plate 411, the first support surface 413 is arranged on the inclined surface of the first support block 412, and the first support surface 413 forms a preset angle with the floor platform 1, the first support block 412 is a triangular structure, has high stability, can withstand greater pressure, and is not easy to deform or collapse, the first support surface 413 is fixed on the long inclined surface of the first support block 412 of the triangular structure, the first support surface 413 is inclined outward along the right side direction of the floor platform 1 and forms an angle of 45 degrees with the floor platform 1, so that the two first actuators 42 can be reasonably arranged on both sides of the drive axle housing 3.

[0066] As an optional embodiment, in one embodiment of the invention, see Figure 2As shown, the second group of the load loading assembly 4 includes: two second supports 44, two second actuators 45 and two connecting blocks 46, the two second supports 44 are spaced apart at the other side of the floor platform 1, the two second supports 44 are inclined to the floor platform 1, one second actuator 45 is correspondingly arranged on one second support 44, and the extension direction of each second actuator 45 is opposite to the inclination direction of the second support 44, one second actuator 45 is arranged opposite to one first actuator 42, one connecting block 46 is correspondingly arranged at the top end of one second actuator 45 and connected to one shaft head 43, and is used to apply a load in the vehicle driving direction to the wheel end of the drive axle housing 3, the two second supports 44 are symmetrically arranged with the two first supports 41, and the two second supports 44 are spaced apart. It is arranged on the left side of the floor platform 1, each of the second supports 44 is at an angle of 45 degrees with the floor platform 1 and is inclined outward along the left side of the floor platform 1, and each of the second actuators 45 is inclined inward along the right side of the floor platform 1 and is fixed on the second support 44, one end of a connecting block 46 is connected to a second actuator 45, and the other end is connected to a shaft head 43, and the controller controls the second actuator 45 to apply a sinusoidal wave signal load to the connecting block 46 and the wheel end of the drive axle housing 3, that is, the second actuator 45 is controlled to apply thrust or tension to the drive axle housing 3 along its length direction, and the loading amplitude is ±0.88 times the rated design axle load, and the test loading frequency is 3Hz, simulating the impact load in the X direction of the vehicle driving direction encountered by the drive axle housing 3 during the vehicle driving process.

[0067] As an optional embodiment, in one embodiment of the invention, see Figure 2As shown, the second support 44 includes: a second bottom plate 441, a second support block 442 and a second support surface 443, the second bottom plate 441 is arranged on the other side of the floor platform 1, the second support block 442 is arranged on the second bottom plate 441, the second support surface 443 is arranged on the inclined surface of the second support block 442, the second support surface 443 and the floor platform 1 also form a preset angle, and the second support surface 443 is perpendicular to the first support surface 413, the second support block 442 is also a triangular structure, has high stability, can withstand large pressure, is not easy to deform or collapse, the second support surface 443 is fixed on the long inclined surface of the second support block 442 of the triangular structure, the second support surface 443 is inclined outward along the left side of the floor platform 1 and forms an angle of 45 degrees with the floor platform 1, and the angle between the second support surface 443 and the first support surface 413 is 90 degrees, so that one of the first actuators 42 intersects with the front end of one of the second actuators 45 and is located exactly at one wheel end of the drive axle housing 3, and the vehicle driving direction load and the vertical direction load can be applied to the wheel end of the drive axle housing 3 at the same time, truly simulating the force and deformation of the drive axle housing 3 during the vehicle driving process.

[0068] As an optional embodiment, in one embodiment of the invention, see Figure 1 As shown, the device for testing the drive axle housing of a commercial vehicle also includes: a sensor, which is connected to the controller, and the sensor is used to be arranged on the drive axle housing 3 to collect bending data and deformation data of the drive axle housing 3 and send them to the controller. The sensor includes a displacement sensor and a force sensor, and the displacement sensor and the force sensor are both connected to the controller to collect the load data actually borne by the drive axle housing 3 and the bending data and deformation data that occur, and send them to the controller.

[0069] The embodiment of the present invention also provides a method for testing a commercial vehicle drive axle housing, see Figure 3 As shown, the device for testing the drive axle housing of a commercial vehicle described above includes the following steps:

[0070] Step S10, controlling the two groups of load applying components 4 to apply vehicle driving direction load and vertical direction load to the wheel end of the driving axle housing 3 according to the initial load value;

[0071] Step S20, obtaining load data actually loaded on the wheel end of the drive axle housing 3, and correcting the initial load value according to the load data actually loaded on the wheel end of the drive axle housing 3.

[0072] Specifically, the controller controls the two first actuators 42 to apply a vertical bending load of a certain amplitude to the wheel end of the drive axle housing 3 according to the initial load value, that is, 0.5 times the rated design axle load, and the test loading frequency is 0Hz, simulating the vertical bending load in the vertical direction Z direction generated when the drive axle housing 3 is subjected to the weight of the cargo and the impact of the ground during the driving process of the vehicle; and also controls the second actuator 45 to apply a load of a sine wave signal to the connecting block 46 and the wheel end of the drive axle housing 3, that is, ±0.88 times the rated design axle load, and the test loading frequency is 3Hz, simulating the impact of the drive axle housing 3 in the vehicle driving direction X direction encountered during the driving process of the vehicle. The load is then monitored by the displacement sensor and the force sensor for the actual load on the wheel end of the drive axle housing 3 and fed back to the controller. If the actual load on the wheel end of the drive axle housing 3 is less than 0.5 times the rated design axle load or less than ±0.88 times the rated design axle load, the controller increases the initial load value. If the actual load on the wheel end of the drive axle housing 3 is greater than 0.5 times the rated design axle load or greater than ±0.88 times the rated design axle load, the controller reduces the initial load value, so that the force on the drive axle housing 3 is consistent with its actual force during vehicle driving, thereby ensuring the authenticity and accuracy of the test results of the drive axle housing 3.

[0073] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0074] It should be noted that, in the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0075] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A device for testing a commercial vehicle drive axle housing, characterized in that: include: Floor platform (1); Two fixing components (2), the two fixing components (2) are arranged on the floor platform (1) at intervals and are used to fix the leaf spring seat of the drive axle housing (3); Two groups of load loading components (4), the two groups of load loading components (4) are arranged on both sides of the two fixing components (2) and the drive axle housing (3), and the two groups of load loading components (4) are arranged opposite to each other and are both connected to the wheel ends of the drive axle housing (3); A controller, the controller is connected to the two sets of load loading components (4) and is configured to: Controlling the two groups of load applying components (4) to apply vehicle driving direction load and vertical direction load to the wheel end of the drive axle housing (3) according to the initial load value; The load data actually loaded on the wheel end of the drive axle housing (3) is obtained, and the initial load value is corrected according to the load data actually loaded on the wheel end of the drive axle housing (3).

2. The device for testing a commercial vehicle drive axle housing according to claim 1, characterized in that: Also includes: A bottom plate (5), the bottom plate (5) being arranged on the floor platform (1), and two of the fixing components (2) being arranged on the bottom plate (5) at intervals; A crossbeam (6), wherein the crossbeam (6) is arranged between the two fixing components (2), and the crossbeam (6) is respectively connected to the two fixing components (2).

3. The device for testing a commercial vehicle drive axle housing according to claim 2, characterized in that: Each of the fixing components (2) comprises: A support base (21), the support base (21) being arranged on the bottom plate (5) in a vertical direction, and a first inclined surface (211) being arranged on the top of the support base (21); A leaf spring connector (22), the leaf spring connector (22) being arranged on the first inclined surface (211) and connected thereto, the leaf spring connector (22) being used for fixing the leaf spring seat of the drive axle housing (3).

4. The device for testing a commercial vehicle drive axle housing according to claim 3, characterized in that: The leaf spring connector (22) comprises: An I-shaped beam (221), the I-shaped beam (221) being disposed on the first inclined surface (211) and connected thereto; A fixing plate (222) is arranged above the I-shaped beam (221), and the fixing plate (222) and the top surface of the I-shaped beam (221) form a restraining space for fixing a leaf spring seat of the drive axle housing (3).

5. The device for testing a commercial vehicle drive axle housing according to claim 1, characterized in that: The first group of load applying components (4) comprises: Two first supports (41), the two first supports (41) are arranged at intervals on one side of the floor platform (1), and the two first supports (41) are inclined toward the floor platform (1); Two first actuators (42), one of the first actuators (42) is correspondingly arranged on one of the first supports (41), and the extension direction of each of the first actuators (42) is opposite to the inclination direction of the first support (41); Two shaft heads (43), one shaft head (43) is correspondingly arranged at the top end of one of the first actuators (42) and connected to a wheel end of the drive axle housing (3), and is used to apply a vertical load to the wheel end of the drive axle housing (3).

6. The device for testing a commercial vehicle drive axle housing according to claim 5, characterized in that: Each of the first supports (41) comprises: A first bottom plate (411), the first bottom plate (411) being arranged on one side of the floor platform (1); A first support block (412), the first support block (412) being arranged on the first bottom plate (411); A first supporting surface (413), wherein the first supporting surface (413) is arranged on the inclined surface of the first supporting block (412), and the first supporting surface (413) forms a preset angle with the floor platform (1).

7. The device for testing a commercial vehicle drive axle housing according to claim 6, characterized in that: The second group of load applying components (4) comprises: Two second supports (44), the two second supports (44) are arranged at intervals on the other side of the floor platform (1), and the two second supports (44) are both inclined toward the floor platform (1); Two second actuators (45), one second actuator (45) is correspondingly arranged on one second support (44), and the extension direction of each second actuator (45) is opposite to the inclination direction of the second support (44), and one second actuator (45) is arranged opposite to one first actuator (42); Two connecting blocks (46), one of the connecting blocks (46) is correspondingly arranged at the top end of one of the second actuators (45) and connected to one of the shaft heads (43), and is used to apply a load in the vehicle's driving direction to the wheel end of the drive axle housing (3).

8. The device for testing a commercial vehicle drive axle housing according to claim 7, characterized in that: The second support (44) comprises: A second bottom plate (441), the second bottom plate (441) being arranged on the other side of the floor platform (1); A second support block (442), the second support block (442) being arranged on the second bottom plate (441); A second supporting surface (443), wherein the second supporting surface (443) is disposed on the inclined surface of the second supporting block (442), the second supporting surface (443) and the floor platform (1) also form a preset angle, and the second supporting surface (443) is perpendicular to the first supporting surface (413).

9. The device for testing a commercial vehicle drive axle housing according to claim 1, characterized in that: Also includes: A sensor is connected to the controller, and the sensor is used to be arranged on the drive axle housing (3) to collect bending data and deformation data of the drive axle housing (3) and send the data to the controller.

10. A method for testing a commercial vehicle drive axle housing, using the device for testing a commercial vehicle drive axle housing according to claim 1, characterized in that: include: Controlling two groups of load-applying components (4) to apply vehicle travel direction load and vertical direction load to the wheel end of the drive axle housing (3) according to the initial load value; The load data actually loaded on the wheel end of the drive axle housing (3) is obtained, and the initial load value is corrected according to the load data actually loaded on the wheel end of the drive axle housing (3).

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