Front axle assembly fixing base and fatigue test tool

Abstract

The utility model provides a front axle assembly fixed base and fatigue test tooling, including base, locating piece and upper arm support, wherein the base is hollow polyhedron, and at least one side of base is provided with through hole, at least one side is provided with waist slot; the positioning block and the upper arm support are arranged on the surface, provided with the waist groove, of the base, and the positioning block and the upper arm support are fixedly connected with the waist groove through fasteners; the positioning block is used for fixing the front axle, the upper arm support is used for installing the load transmission component, and the load transmission component is connected with the upper arm. The base is arranged to be the hollow polyhedron and is provided with the through hole and the kidney-shaped groove, so that the positioning block and the upper arm support are conveniently connected to the kidney-shaped groove through a fastener, the position is conveniently adjusted to adapt to fixing of front axle assemblies of different models, meanwhile, the upper arm support can be provided with a load transmission component, and then the upper arm is connected through the load transmission component; therefore, the load transmission test is realized, and the upper arm detection device is suitable for upper arm detection.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling fixtures, in particular to a front axle assembly fixing base and a fatigue testing tooling. Background Art

[0002] The front axle is an important accessory for vehicles. It is a device used to transmit the various forces between the frame and the front wheels and the bending moment and torque generated by them. In the early stages of development, after the production of samples, each front axle needs to be assembled with the kingpin, steering knuckle and other related parts, and then undergo a fatigue life bench test to verify the test. In general, the OEM only requires vertical force stiffness and fatigue life tests on the front axle, and the required fixture is very simple. However, with the continuous updating of design concepts and the continuous improvement of product reliability requirements, some customers have proposed that the front axle also needs to undergo lateral, longitudinal and steering fatigue life bench tests, and the test methods and required test specimens for each test are different. In order to conduct bench tests, it is necessary to design corresponding fixtures to clamp and fix the test specimens and connect them to the bench test equipment.

[0003] The current utility model patent with authorization announcement number CN208568324U discloses a lateral random loading test mechanism for the front axle assembly of a commercial vehicle, which is composed of a simulated wheel hub, a wheel hub connecting plate, a lateral loading arm at the center grounding point of the wheel, a lateral loading fork at the center grounding point of the wheel, a linear actuator, etc.; the lateral loading arm at the center grounding point of the wheel is loaded onto the steering knuckle through the loading fork, the wheel hub connecting plate, etc. via the simulated wheel hub, and a real vehicle bearing is installed in the simulated wheel hub.

[0004] As in the above solution, the front axle assembly is fixed to the front axle fixing support by a front axle fixing block, but this fixing method is too simple and has poor versatility and cannot be applied to the fixing of front axles of different models; at the same time, it cannot connect to the upper arm and is not suitable for testing the upper arm. Utility Model Content

[0005] In view of this, the utility model proposes a front axle assembly fixing base and fatigue test fixture with good versatility for testing the upper arm, so as to solve the problem that the existing test device has poor versatility and cannot realize the upper arm test.

[0006] The technical solution of the utility model is achieved in this way:

[0007] On the one hand, the utility model provides a front axle assembly fixing base, including a base, a positioning block and an upper arm support, wherein:

[0008] The base is a hollow polyhedron, and at least one side of the base is provided with a through hole, and at least one side of the base is provided with a waist groove;

[0009] The positioning block and the upper arm support are both arranged on the surface of the base with the waist groove, and the positioning block and the upper arm support are fixedly connected with the waist groove by fasteners;

[0010] The positioning block is used to fix the front axle, the upper arm support is used to install the load transfer component, and the load transfer component is connected to the upper arm.

[0011] On the basis of the above technical solution, preferably, the base is a rectangular box-shaped structure, and the base has waist grooves on five sides.

[0012] On the basis of the above technical solution, preferably, the through hole is a circular hole or a polygonal hole.

[0013] On the basis of the above technical solution, preferably, a positioning hole is also provided on the surface of the base where the waist groove is provided, and a plurality of waist grooves are provided and are mirror-imaged on both sides of the positioning hole.

[0014] On the basis of the above technical solution, preferably, two bases are provided, and the surfaces of the two bases where the through holes are provided are relatively far away from each other.

[0015] On the basis of the above technical solution, preferably, the center point of the surface of the base with the waist groove is used as a reference, and the positioning block is close to the surface of the base with the through hole relative to the center point.

[0016] On the other hand, the utility model provides a fatigue testing tool, including the above-mentioned front axle assembly fixing base.

[0017] On the basis of the above technical solution, preferably, the load transfer component is a thrust fork, which includes a U-shaped bracket and a connecting rod, wherein:

[0018] The U-shaped bracket is hinged to the upper arm;

[0019] One end of the connecting rod is connected to the U-shaped bracket, and the other end passes through the upper arm support.

[0020] On the basis of the above technical solution, preferably, it further includes a hub bracket, a longitudinal bracket and a thrust rod, wherein:

[0021] The wheel hub bracket is connected to the wheel hub at one end of the front axle;

[0022] The longitudinal bracket is connected to the steering knuckle at the other end of the front axle;

[0023] A thrust rod is respectively arranged on the wheel hub bracket and the longitudinal bracket.

[0024] On the basis of the above technical solution, preferably, it also includes a lateral support, the lateral support is connected to the wheel hub bracket, and the thrust rod is arranged on the lateral support.

[0025] Compared with the prior art, the front axle assembly fixing base and fatigue testing tooling of the utility model have the following advantages:

[0026] Beneficial effects:

[0027] (1) By setting the base as a hollow polyhedron and providing through holes and waist grooves, it is convenient to connect the positioning block and the upper arm support to the waist groove through fasteners, which is not only convenient for adjusting the position, but also convenient for removing and replacing the positioning block and the upper arm support to adapt to the fixation of different models of front axle assemblies, and the upper arm support can be installed with a load transfer component, and then connected to the upper arm through the load transfer component to realize the load transfer test, which is suitable for testing the upper arm;

[0028] (2) The provision of through holes facilitates the installation of fasteners from the inside of the base, which is conducive to improving the convenience of fixing the positioning block and the upper arm support. At the same time, the through holes are provided as circular holes or polygonal holes, which is conducive to ensuring the structural strength of the surface of the base where the through holes are provided, so that the base has a better load-bearing capacity;

[0029] (3) This fatigue test fixture is provided with a wheel hub bracket and a longitudinal bracket, which are respectively connected to the wheel hub and the steering knuckle. At the same time, the wheel hub bracket and the longitudinal bracket are connected to the thrust rod. In this way, fatigue life detection under braking and side sliding conditions can be simulated at the same time, which has the advantages of diversified detection and high detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0031] Figure 1 It is a three-dimensional diagram of the fixing base of the front axle assembly of the utility model;

[0032] Figure 2 A three-dimensional diagram of the fatigue testing tool of the utility model;

[0033] Figure 3 This is an application state diagram of the fatigue testing tooling of the utility model;

[0034] Figure 4 It is a three-dimensional diagram of the fatigue test fixture of the utility model being separated from the front axle assembly;

[0035] Figure 5 This is a structural diagram of the hub bracket and the lateral bracket of the fatigue testing tooling of the utility model;

[0036] Figure 6 is a three-dimensional diagram of the front axle assembly;

[0037] In the figure: 1, base; 101, through hole; 102, waist groove; 103, positioning hole; 2, positioning block; 3, upper arm support; 4, thrust fork; 41, U-shaped bracket; 42, connecting rod; 5, wheel hub bracket; 6, longitudinal bracket; 7, thrust rod; 8, lateral support; 100, front axle; 200, upper arm; 300, wheel hub; 400, steering knuckle. DETAILED DESCRIPTION

[0038] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] like Figures 1 to 5 As shown, the front axle assembly fixing base of the utility model includes a base 1, a positioning block 2 and an upper arm support 3;

[0040] The fatigue testing tool of the utility model comprises the above-mentioned front axle assembly fixing base, and also comprises a thrust fork 4, a wheel hub bracket 5, a longitudinal bracket 6, a thrust rod 7 and a lateral support 8.

[0041] like Figure 6 As shown, the front axle assembly includes a front axle 100 , an upper arm 200 , a wheel hub 300 and a steering knuckle 400 . The steering knuckle 400 is provided at both ends of the front axle 100 for connecting the upper arm 200 and the wheel hub 300 .

[0042] like Figure 1 As shown, the base 1 is a hollow polyhedron, and the base 1 has at least one side with a through hole 101, and at least one side with a waist groove 102; the positioning block 2 and the upper arm support 3 are both arranged on the surface of the base 1 with the waist groove 102, and the positioning block 2 and the upper arm support 3 are fixedly connected with the waist groove 102 by fasteners; the positioning block 2 is used to fix the front axle 100, and the upper arm support 3 is used to install the load transfer component, and the load transfer component is connected to the upper arm 200;

[0043] As in the above structure, when fixing the front axle assembly, first connect the positioning block 2 and the upper arm support 3 to the waist groove 102 of the base 1 through fasteners for fixing, wherein the through hole 101 is convenient for installing fasteners through the inside of the base 1. Then, place the front axle 100 on the positioning block 2, and then fix the positioning block 2 and the front axle 100 with fasteners. At the same time, assemble the load transfer component to the upper arm support 3, and then connect the load transfer component to the upper arm 200. In this way, when testing, the load is transferred to the upper arm 200 through the load transfer component, and then the wheel hub 300 can be driven to move through the steering knuckle 400.

[0044] When adjustment is needed, or in order to adapt to different types of front axle assemblies, one can loosen the fasteners to allow the positioning block 2 and the upper arm support 3 to slide along the waist groove 102 for adjustment, or directly remove the positioning block 2 and the upper arm support 3, and adapt to different types of front axle assemblies by replacing different types of positioning blocks 2 and upper arm supports 3.

[0045] Specifically, the base 1 is a rectangular box-shaped structure, and the base 1 has waist grooves 102 on five sides;

[0046] As in the above structure, the surface of the base 1 with the waist groove 102 is not only used to install the positioning block 2 and the upper arm support 3, but also can be used to install other auxiliary clamps to adapt to the front axle assembly with more complex structure. At the same time, multiple identical auxiliary clamps can also be set to improve the stability of the front axle assembly.

[0047] Specifically, the through hole 101 on the base 1 is a circular hole or a polygonal hole, which is beneficial to ensure the structural strength of the base surface where the through hole is opened, so that the base has a better load-bearing capacity.

[0048] like Figure 1 As shown, the surface of the base 1 on which the waist groove 102 is formed is also provided with a positioning hole 103, and the waist groove 102 is provided with a plurality of positioning holes 103, which are mirror-imaged on both sides of the positioning hole 103;

[0049] As in the above structure, when fixing the positioning block 2, bolts can be used as fasteners, and the positioning hole 103 is used to install the bolts to fix one point of the positioning block 2, and then the other points of the positioning block 2 can be fixed to the waist groove 102, thereby ensuring the accuracy of the installation position of the positioning block 2.

[0050] Furthermore, two bases 1 are provided, and the surfaces of the two bases 1 where the through holes 101 are provided are relatively far away;

[0051] As in the above structure, when supporting the front axle assembly, both ends of the front axle assembly are heavier because they require components such as the wheel hub 300 and the steering knuckle 400, and the surface of the base 1 with the through hole 101 has a higher structural strength, so this surface is set close to the wheel hub 300 to ensure the stability of the support.

[0052] Furthermore, in order to better share the weight of the front axle assembly, the center point of the surface of the base 1 with the waist groove 102 is used as a reference, and the positioning block 2 is close to the surface of the base 1 with the through hole 101 relative to the center point.

[0053] like Figures 2 to 4As shown, in the fatigue test fixture, the load transfer component is a thrust fork 4, which includes a U-shaped bracket 41 and a connecting rod 42, wherein the U-shaped bracket 41 is hinged to the upper arm 200; one end of the connecting rod 42 is connected to the U-shaped bracket 41, and the other end passes through the upper arm support 3;

[0054] As in the above structure, when installing the thrust fork 4, the U-shaped bracket 41 is connected in series to the upper arm 200 of the front axle assembly through a pin shaft, and the connecting rod 42 passes through the upper arm support 3 and is then connected to the test equipment to achieve the transmission of the test load.

[0055] like Figure 3 As shown, the wheel hub bracket 5 is connected to the wheel hub 300 at one end of the front axle 100; the longitudinal bracket 6 is connected to the steering knuckle 400 at the other end of the front axle 100; a thrust rod 7 is provided on each of the wheel hub bracket 5 and the longitudinal bracket 6;

[0056] As in the above structure, when conducting a test, the test load transmitted by the thrust fork 4 will be transmitted to the wheel hub 300 and the steering knuckle 400, and the wheel hub bracket 5 is connected to the wheel hub 300, and the longitudinal bracket 6 is connected to the steering knuckle. At this time, when the wheel hub 300 and the longitudinal bracket 6 move, the load will be transmitted to the thrust rod 7. By connecting the thrust rod 7 to the experimental equipment, the movement posture and load of the wheel hub 300 and the steering knuckle 400 can be obtained, thereby realizing the load detection of the simulated front axle under braking and side sliding conditions.

[0057] like Figure 5 As shown, the lateral support 8 is connected to the hub bracket 5, and the thrust rod 7 is arranged on the lateral support 8;

[0058] As in the above structure, since the models of the wheel hub 300 are different, different wheel hub brackets 5 are required. In this case, a lateral support 8 is provided to connect the thrust rod 7, so as to facilitate the disassembly and assembly of the wheel hub bracket 5 and improve the versatility of the tooling.

[0059] Specific implementation steps:

[0060] During application, the positioning block 2 and the upper arm support 3 are installed on the base 1 by fasteners, and then the front axle 100 is connected and fixed to the positioning block 2, the thrust fork 4 is connected to the upper arm 200 through the U-shaped bracket 41, and connected to the test equipment through the connecting rod 42, the wheel hub 300 is connected to the wheel hub bracket 5, the steering knuckle 400 is connected to the longitudinal bracket 6, and then the two thrust rods 7 are connected to the test equipment. The load transmitted by the test equipment is transmitted to the upper arm 200 through the thrust fork 4, and then transmitted to the steering knuckle 400 and the wheel hub 300, and finally transmitted back to the test equipment through the thrust rod 7 to complete the test.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A front axle assembly fixing base, characterized in that: It comprises a base (1), a positioning block (2) and an upper arm support (3), wherein: The base (1) is a hollow polyhedron, and the base (1) has at least one side with a through hole (101) and at least one side with a waist groove (102); The positioning block (2) and the upper arm support (3) are both arranged on the surface of the base (1) where the waist groove (102) is opened, and the positioning block (2) and the upper arm support (3) are fixedly connected to the waist groove (102) by fasteners; The positioning block (2) is used to fix the front axle (100), the upper arm support (3) is used to install a load transfer component, and the load transfer component is connected to the upper arm (200).

2. The front axle assembly fixing base according to claim 1, characterized in that: The base (1) is a rectangular box-shaped structure, and the base (1) has five sides with waist grooves (102).

3. The front axle assembly fixing base according to claim 1, characterized in that: The through hole (101) is a circular hole or a polygonal hole.

4. The front axle assembly fixing base according to claim 1, characterized in that: The surface of the base (1) on which the waist groove (102) is formed is also provided with a positioning hole (103), and the waist groove (102) is provided with a plurality of positioning holes (103) which are arranged in a mirror image on both sides of the positioning hole (103).

5. The front axle assembly fixing base according to any one of claims 1 to 4, characterized in that: Two bases (1) are provided, and the surfaces of the two bases (1) on which the through holes (101) are formed are relatively far away from each other.

6. The front axle assembly fixing base as claimed in claim 5, characterized in that: Taking the center point of the surface of the base (1) on which the waist groove (102) is formed as a reference, the positioning block (2) is located close to the surface of the base (1) on which the through hole (101) is formed relative to the center point.

7. A fatigue testing tool, characterized in that: It comprises a front axle assembly fixing base as described in any one of claims 1 to 6.

8. The fatigue testing tool as claimed in claim 7, characterized in that: The load transfer component is a thrust fork (4), and the thrust fork (4) comprises a U-shaped bracket (41) and a connecting rod (42), wherein: The U-shaped bracket (41) is hinged to the upper arm (200); One end of the connecting rod (42) is connected to the U-shaped bracket (41), and the other end passes through the upper arm support (3).

9. The fatigue testing tool as claimed in claim 8, characterized in that: It also includes a hub bracket (5), a longitudinal bracket (6) and a thrust rod (7), wherein: The wheel hub bracket (5) is connected to the wheel hub (300) at one end of the front axle (100); The longitudinal bracket (6) is connected to the steering knuckle (400) at the other end of the front axle (100); The wheel hub bracket (5) and the longitudinal bracket (6) are each provided with a thrust rod (7).

10. The fatigue testing tool as claimed in claim 9, characterized in that: It also comprises a lateral support (8), wherein the lateral support (8) is connected to the wheel hub bracket (5), and the thrust rod (7) is arranged on the lateral support (8).

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