Gearbox and rear axle testing device

Abstract

The utility model discloses a gearbox and rear axle testing device, and relates to the technical field of automobile detection, in particular to a gearbox and rear axle testing device, which comprises a bottom plate, a supporting plate is fixedly arranged above the bottom plate, and a long rib plate and a short rib plate are respectively and fixedly arranged between two sides of the supporting plate and the bottom plate. An upper supporting seat and a lower supporting seat are installed above the side, close to the short rib plate, of the supporting plate through bolts, an axle housing is installed between the upper supporting seat and the lower supporting seat, and a main gearbox is installed in the middle of the axle housing. According to the gearbox and rear axle test device, the bottom plate, the supporting plate, the upper supporting base and the lower supporting base are arranged in a matched mode, so that the gearbox and rear axle test device has the effect that all tests can be completed through one test bed, and then the cost is reduced; the gearbox and rear axle test device has the effect that the axle housing does not need to be repeatedly fixed, so that the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile detection, in particular to a gearbox and rear axle testing device. Background Art

[0002] At present, new energy vehicles have entered a stage of rapid development, and the transmission and bridge housing are important components of new energy vehicles. According to the QC / T533-2020 commercial vehicle drive axle assembly standard, the technical requirements and bench test methods of commercial vehicle drive axle assemblies are specified. The bridge housing needs to undergo vertical bending stiffness test, bridge housing vertical bending static strength test, bridge housing fatigue test, vertical bending fatigue, braking fatigue, lateral bending fatigue and other experiments. At present, the lateral bending fatigue test is mostly for the bridge housing to be parallel to the horizontal plane, and the load is applied to the center of the lateral load force point (that is, the tire grounding point), and the direction is parallel to the center line of the bridge housing. This load application direction has a vertical position relationship with the direction of the vertical bending fatigue test and the braking fatigue test, so it is impossible for one test bench to complete all the tests that need to be done. At this time, multiple test benches are required to complete multiple tests, and the cost will be greatly increased. In addition, the bridge housing is relatively large in mass and irregular in shape. Repeated positioning takes a lot of time, resulting in low detection efficiency. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a gearbox and rear axle test device, which solves the problems raised in the above background technology.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the utility model is implemented through the following technical solutions: a gearbox and rear axle test device, including a base plate, a support plate fixedly installed on the top of the base plate, long rib plates and short rib plates fixedly installed between the two sides of the support plate and the base plate respectively, an upper support seat and a lower support seat are installed above the side of the support plate close to the short rib plate by bolts, a bridge housing is installed between the upper support seat and the lower support seat, a main gearbox is installed in the middle of the bridge housing, wheel hubs are installed at both ends of the bridge housing, and pressure plates for clamping the bridge housing are arranged at the ends of the upper support seat and the lower support seat.

[0007] Preferably, the bottom plate, the support plate, the long rib plate and the short rib plate are welded to form a whole and are fixed on the test bench by bolts through the bottom plate, wherein the support plate is vertically upward and reinforced by the long rib plate and the short rib plate.

[0008] Preferably, the upper support seat is installed close to the inner side of the upper wheel hub, the lower support seat is installed close to the inner side of the lower wheel hub, and the upper support seat and the lower support seat are symmetrically distributed on both sides of the main gearbox.

[0009] Preferably, long waist grooves are opened on both sides of the support plate, and the bolts for installing the upper support seat and the lower support seat pass through the long waist grooves, so that the upper support seat and the lower support seat can be adjusted to a suitable distance through the long waist grooves to be suitable for fixing and installing the bridge housing.

[0010] Preferably, a connecting plate is installed on the outer side of the wheel hub, the length of the connecting plate is larger than the diameter of the wheel hub, and the load of the transverse bending fatigue test is applied to the outer end of the connecting plate and is parallel to the center line of the bridge housing, that is, the load is applied vertically.

[0011] Preferably, the bridge housing can be removed from the support plate by unscrewing all the bolts that fix the upper support seat and the lower support seat, and the bridge housing can be fixed horizontally by laying the bridge housing flat and fixing the upper support seat and the lower support seat to the test bench with bolts.

[0012] The utility model provides a gearbox and rear axle test device, which has the following beneficial effects:

[0013] 1. The gearbox and rear axle test device, through the coordinated arrangement of the base plate, the support plate, the upper support seat and the lower support seat, enables the gearbox and rear axle test device to complete all tests through one test bench, thereby reducing costs. A vertical upward bracket installed on the test bench is built through the base plate and the support plate, and various sizes of bridge shells can be vertically fixed through the upper support seat and the lower support seat. At this time, the bridge shell can be subjected to a lateral bending fatigue test through a vertical downward load, so that all tests can be completed by a test bench that only loads vertical loads, thereby achieving the effect of reducing costs.

[0014] 2. The gearbox and rear axle test device, through the coordinated arrangement of the support plate, the upper support seat, the lower support seat and the pressure plate, has the effect of improving efficiency without repeatedly fixing the bridge housing. The support seat and the pressure plate used to fix the bridge housing are installed on the support plate by detachable screws. When the installation posture of the bridge housing needs to be changed, it is only necessary to unscrew the screws connecting the support plate and the support seat, remove the bridge housing, and then fix the bridge housing by the support seat. Therefore, there is no need to spend time re-fixing the irregularly shaped bridge housing itself, which can save a lot of time and improve efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the front view of the utility model;

[0016] Figure 2 It is a schematic structural diagram of an exploded view of the utility model.

[0017] In the figure: 1, bottom plate; 2, support plate; 3, long rib plate; 4, short rib plate; 5, upper support seat; 6, lower support seat; 7, bridge housing; 701, main gearbox; 702, wheel hub; 8, pressure plate; 9, connecting plate. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0019] See also Figure 1 to Figure 2 The utility model provides a technical solution: a gearbox and rear axle test device, comprising a bottom plate 1, a support plate 2 is fixedly installed on the top of the bottom plate 1, and long rib plates 3 and short rib plates 4 are fixedly installed between the two sides of the support plate 2 and the bottom plate 1 respectively, the bottom plate 1, the support plate 2, the long rib plates 3 and the short rib plates 4 are welded to form a whole and fixed on the test bench by bolts through the bottom plate 1, wherein the support plate 2 is vertically upward and reinforced by the long rib plates 3 and the short rib plates 4, an upper support seat 5 and a lower support seat 6 are installed on the upper side of the support plate 2 close to the short rib plate 4 by bolts, a bridge housing 7 is installed between the upper support seat 5 and the lower support seat 6, a main gearbox 701 is installed in the middle of the bridge housing 7, wheel hubs 702 are installed at both ends of the bridge housing 7, the upper support seat 5 is installed close to the inner side of the upper end wheel hub 702, the lower support seat 6 is installed close to the inner side of the lower end wheel hub 702, and the upper support seat 5 and the lower support seat 6 are symmetrically distributed on both sides of the main gearbox 701, the support plate 2 Long waist grooves are provided on both sides of the upper support seat 5 and the lower support seat 6, and the bolts for installing the upper support seat 5 and the lower support seat 6 pass through the long waist grooves, so that the upper support seat 5 and the lower support seat 6 can be adjusted to a suitable distance through the long waist grooves to be suitable for fixing the bridge shell 7, that is, the upper support seat 5 and the lower support seat 6 can be slid up and down to change the distance and height of the two support seats, so as to be suitable for fixing various types of bridge shells 7. The ends of the upper support seat 5 and the lower support seat 6 are provided with pressure plates 8 for pressing the bridge shell 7. The outer side of the wheel hub 702 is installed with a connecting plate 9. The length of the connecting plate 9 is larger than the diameter of the wheel hub 702. The load of the transverse bending fatigue test is applied to the outer end of the connecting plate 9 and is parallel to the center line of the bridge shell 7, that is, the load is applied vertically. By unscrewing all the bolts fixing the upper support seat 5 and the lower support seat 6, the bridge shell 7 can be removed from the support plate 2, and the bridge shell 7 can be laid flat and the upper support seat 5 and the lower support seat 6 can be fixed to the test bench by bolts to fix the bridge shell 7 horizontally, thereby easily changing the fixing posture of the bridge shell 7.

[0020] When in use, the device is first fixedly installed on a test bench that can apply vertical loads through the base plate 1, and then the appropriate upper and lower support seats 6 and pressure plates 8 are selected according to the shape and size of the bridge shell 7, and they are pre-installed on the long waist groove opened on the support plate 2 with bolts, and then the spacing between the upper and lower support seats 6 is adjusted according to the shape characteristics of the bridge shell 7 and the experiments to be done, and then the bridge shell 7 is symmetrically fixed between the upper and lower support seats 6 through the pressure plate 8, and then the connecting plate 9 is further connected to the wheel hub 702. At this time, a vertical downward load is applied to the end of the connecting plate 9 to perform a transverse bending fatigue test. After the transverse bending fatigue test is completed, the connecting plate 9 is removed and the screws fixing the connecting support seat are unscrewed to remove the support seat together with the bridge shell 7, and then the bridge shell 7 is horizontally fixed on the test bench through the upper support seat 5 and the lower support seat 6 as fixed support components, which can play the effect of quickly changing the posture of the bridge shell 7. At this time, the vertical load is applied to the horizontal bridge shell 7 to complete the remaining tests. In this process, only one vertical load is used to complete all tests, and there is no need to invest in multiple test benches to achieve the effect of saving test costs.

[0021] In summary, the gearbox and rear axle test device builds a vertically upward bracket installed on the test bench through the base plate 1 and the support plate 2, and the bridge shells 7 of various sizes can be vertically fixed through the upper support seat 5 and the lower support seat 6. At this time, the bridge shell 7 can be subjected to a lateral bending fatigue test through a vertical downward load, so that all tests can be completed by a test bench that only loads vertical loads, thereby achieving the effect of reducing costs. The support seat and the pressure plate 8 used to fix the bridge shell 7 are installed on the support plate 2 through detachable screws. When the installation posture of the bridge shell 7 needs to be changed, it is only necessary to unscrew the screws connecting the support plate 2 and the support seat, remove the bridge shell 7, and then fix the bridge shell 7 through the support seat. Therefore, there is no need to spend time re-fixing the irregularly shaped bridge shell 7 itself, which can save a lot of time and improve efficiency.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gearbox and rear axle test device, comprising a base plate (1), characterized in that: A support plate (2) is fixedly mounted above the bottom plate (1), long rib plates (3) and short rib plates (4) are fixedly mounted between the two sides of the support plate (2) and the bottom plate (1), an upper support seat (5) and a lower support seat (6) are mounted above the side of the support plate (2) close to the short rib plate (4) by bolts, a bridge housing (7) is mounted between the upper support seat (5) and the lower support seat (6), a main gearbox (701) is mounted in the middle of the bridge housing (7), wheel hubs (702) are mounted at both ends of the bridge housing (7), and pressure plates (8) for pressing the bridge housing (7) are arranged at the ends of the upper support seat (5) and the lower support seat (6).

2. The gearbox and rear axle test device according to claim 1, characterized in that: The bottom plate (1), the support plate (2), the long rib plate (3) and the short rib plate (4) are welded together to form a whole and are fixed on the test bench by bolts through the bottom plate (1), wherein the support plate (2) is vertically upward and is reinforced by the long rib plate (3) and the short rib plate (4).

3. The gearbox and rear axle test device according to claim 1, characterized in that: The upper support seat (5) is installed close to the inner side of the upper wheel hub (702), and the lower support seat (6) is installed close to the inner side of the lower wheel hub (702), and the upper support seat (5) and the lower support seat (6) are symmetrically distributed on both sides of the main gearbox (701).

4. The gearbox and rear axle test device according to claim 1, characterized in that: Long grooves are provided on both sides of the support plate (2), and bolts for installing the upper support seat (5) and the lower support seat (6) pass through the long grooves, so that the upper support seat (5) and the lower support seat (6) can be adjusted to a suitable spacing through the long grooves to be suitable for fixing and installing the bridge housing (7).

5. The gearbox and rear axle test device according to claim 1, characterized in that: A connecting plate (9) is installed on the outer side of the wheel hub (702), the length of the connecting plate (9) is greater than the diameter of the wheel hub (702), and the load of the transverse bending fatigue test is applied to the outer end of the connecting plate (9) and is parallel to the center line of the bridge housing (7), that is, the load is applied vertically.

6. The gearbox and rear axle test device according to claim 1, characterized in that: The bridge housing (7) can be removed from the support plate (2) by unscrewing all the bolts that fix the upper support seat (5) and the lower support seat (6). The bridge housing (7) can be horizontally fixed by laying the bridge housing (7) flat and fixing the upper support seat (5) and the lower support seat (6) to the test bench by bolts.

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