Test device

Abstract

The utility model discloses a testing device, which relates to the technical field of vehicles, is used for testing an axle and comprises a workbench, a driving device and a driving device, the first support is arranged on the workbench; the second support is movably arranged on the workbench so as to move close to or away from the first support; the number of the connecting frames is two, the first support is rotationally connected with one connecting frame, the second support is rotationally connected with the other connecting frame, and the connecting frames are used for bearing an axle; and the force applying assembly is movably arranged above the connecting frame so as to apply acting force to the axle. The test device provided by the utility model can be used for carrying out a strength test closer to an actual working condition on the axle.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and particularly relates to a test device. Background Art

[0002] In the current axle performance durability test, the two ends of the axle are often fixed on the test bench through brackets. When a force is applied to the axle, the axle bends under the force and has a tendency to axially shift and angularly shift. Due to the fixation of the brackets, the axial shift and angular shift of the axle cannot be compensated, and it is difficult to accurately simulate the force condition of the axle during actual operation. Summary of the Utility Model

[0003] The main purpose of the utility model is to propose a test device, aiming to conduct a strength test on the axle under conditions closer to the actual working conditions.

[0004] To achieve the above purpose, a test device proposed by the utility model for testing an axle includes:

[0005] A workbench;

[0006] A first support, provided on the workbench;

[0007] A second support, movably provided on the workbench to move closer to or away from the first support;

[0008] Two connecting frames, the first support is rotatably connected to one of the connecting frames, the second support is rotatably connected to the other connecting frame, and the connecting frames are used to carry the axle; and

[0009] A force application assembly, movably provided above the connecting frame to apply a force to the axle.

[0010] In an embodiment, the test device further includes an adjustment assembly, the adjustment assembly is provided on the workbench, and the adjustment assembly is drivingly connected to the first support to adjust the height of the first support.

[0011] In an embodiment, the adjustment assembly includes:

[0012] A screw rod, fixed on the workbench and extending towards the first support, and the screw rod penetrates through the first support;

[0013] At least two nuts, at least two nuts are threadedly connected to the screw rod, and the first support is provided between two adjacent nuts and clamped by the nuts.

[0014] In an embodiment, there are multiple screw rods, and the multiple screw rods are arranged at intervals along the edge of the first support.

[0015] In one embodiment, the test device further includes rolling elements, and the second support is rollingly connected to the workbench through the rolling elements.

[0016] In one embodiment, the test device further includes a guide rail, which is arranged on the workbench and extends away from the first support, and the rolling elements are rollingly connected to the guide rail.

[0017] In one embodiment, at least two guide rails are arranged in parallel and at intervals, and a plurality of rolling elements are provided, and each guide rail is rollingly connected to at least two rolling elements.

[0018] In one embodiment, the connecting frame includes:

[0019] A first bracket, the first support is rotatably connected to the first bracket in one of the connecting frames, and the second support is rotatably connected to the first bracket in the other connecting frame;

[0020] A second bracket connecting the axle to the first bracket.

[0021] In one embodiment, suspension connection positions are provided at both ends of the axle, and the force application assembly includes:

[0022] Two hydraulic cylinders, which are arranged at intervals along the length direction of the axle, and the hydraulic cylinders have connecting ends that move vertically;

[0023] An adapter, which is arranged at the connecting end and connects the suspension connection position.

[0024] In one embodiment, the test device further includes a support frame, which is arranged on the workbench, and a plurality of installation points are provided on the support frame along the length direction of the axle, and the hydraulic cylinders are fixed at the installation points.

[0025] Compared with the prior art, in the technical solution of the present utility model, this test device is used for the strength test of an axle. The test device includes a workbench, on which a first support and a second support are provided. Among them, the second support is movably connected to the workbench and can move closer to or away from the first support. The test device further includes two connecting frames. One connecting frame is rotatably connected to the first support, and the other connecting frame is rotatably connected to the second support. The two connecting frames are respectively used to support both ends of the axle. In addition, the test device further includes a force-applying component, which is movably arranged above the connecting frame and applies a force to the axle. When testing the axle, the force-applying component applies a force to the axle. At this time, the axle deforms under the force. Since the two connecting frames are rotatably connected to the first support and the second support, the two connecting frames can swing along with the deformation of the axle to compensate for the angular offset of the axle. In addition, since the second support can move closer to or away from the first support, the position of the second support can be adjusted according to the deformation state of the axle during the test to compensate for the axial offset of the axle. In summary, through the swinging of the connecting frames and the movement of the second support, the axial offset and angular offset of the axle can be compensated in real time during the test, so as to better simulate the force condition of the axle under the actual working conditions and further better meet the requirements of the test standard. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0027] Figure 1 FIG. is a schematic structural diagram of an embodiment of the test device provided by the present utility model;

[0028] Figure 2 is Figure 1 a partial enlarged view of part A in

[0029] Figure 3 is Figure 1 a partial enlarged view of part B in

[0030] Figure 4 is Figure 1 a partial enlarged view of part C in

[0031] Explanation of the reference numerals in the drawings:

[0032] 10. Axle; 100. Workbench; 200. First support; 300. Second support; 400. Connecting frame; 410. First bracket; 420. Second bracket; 500. Force application component; 510. Hydraulic cylinder; 520. Adapter; 600. Adjustment component; 610. Screw; 620. Nut; 700. Rolling element; 800. Guide rail; 900. Support frame.

[0033] The realization, functional features and advantages of the present utility model will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Specific embodiments

[0034] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0035] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0036] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present utility model, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0037] In order to conduct tests on the axle 10 closer to the actual working conditions, this technical solution proposes a test device for testing the axle 10, and the test device includes:

[0038] Workbench 100;

[0039] First support 200, provided on the workbench 100;

[0040] The second support 300 is movably arranged on the workbench 100 and moves closer to or away from the first support 200;

[0041] There are two connecting frames 400. The first support 200 is rotatably connected to one connecting frame 400, and the second support 300 is rotatably connected to the other connecting frame 400. The connecting frame 400 is used to carry the axle 10; and

[0042] The force application component 500 is movably arranged above the connecting frame 400 to apply a force to the axle 10.

[0043] Compared with the prior art, in the technical solution of the present utility model, this test device is used for the strength test of the axle 10. This test device includes a workbench 100, and a first support 200 and a second support 300 are arranged on the workbench 100. Among them, the second support 300 is movably connected to the workbench 100 and can move closer to or away from the first support 200. This test device also includes two connecting frames. One connecting frame 400 is rotatably connected to the first support 200, and the other connecting frame 400 is rotatably connected to the second support 300. The two connecting frames 400 are respectively used to support both ends of the axle 10; in addition, this test device also includes a force application component 500, and the force application component 500 is movably arranged above the connecting frame 400 and applies a force to the axle 10. When testing the axle 10, the force application component 500 applies a force to the axle 10. At this time, the axle 10 deforms under the force. Since the two connecting frames 400 are rotatably connected to the first support 200 and the second support 300, the two connecting frames 400 can swing along with the deformation of the axle 10 to compensate for the angular offset of the axle 10. In addition, since the second support 300 can move closer to or away from the first support 200, the position of the second support 300 can be adjusted according to the deformation state of the axle 10 during the test process to compensate for the axial offset of the axle 10; in summary, through the swing of the connecting frame 400 and the movement of the second support 300, the axial offset and angular offset of the axle 10 can be compensated in real time during the test process, so as to better simulate the force condition of the axle 10 under the actual working condition, and further better meet the requirements of the test standard.

[0044] Such as Figures 1 to 4, in an embodiment of the present utility model, the test device is used for fatigue durability performance testing of the front axle and rear axle of a vehicle. The test device includes a workbench 100, which can be placed on a bracket or directly on the ground. The top surface of the workbench 100 is a plane, and this plane is set as the mounting surface. On the mounting surface, a first support 200 and a second support 300 are provided. The first support 200 and the second support 300 are arranged at intervals. The first support 200 can be fixed on the mounting surface, and the second support 300 can be slidably matched with the mounting surface and move closer to or away from the first support 200; in addition, the test device further includes a connecting frame 400. There are two connecting frames 400. One of the connecting frames 400 can be rotatably connected to the top of the first support 200 through a rotating shaft, and the other connecting frame 400 is rotatably connected to the top of the second support 300; specifically, the tops of the first support 200 and the second support 300 can both be convexly provided with lug structures. Through holes can be opened in the lugs and rolling bearings can be embedded in the through holes. The rolling bearing has an outer ring and an inner ring. The outer ring is in interference fit with the through hole. At the bottom end of the connecting frame 400, a lug structure can also be convexly provided. The lug on the connecting frame 400 can be fixedly connected to a rotating shaft, and this rotating shaft can be in interference fit with the inner ring. Through the cooperation of the rotating shaft and the rolling bearing, the rotational connection between the connecting frame 400 and the first support 200 or the second support 300 can be realized. In addition, it should be noted that the above method is only an example, and the rotational connection method between the connecting frame 400 and the first support 200 and the second support 300 is not limited to this; in addition, the two connecting frames 400 can be fixedly connected to both ends of the axle 10 by screwing, so as to install the axle 10 on the test device; in addition, the test device further includes a force application component 500. The force application component 500 can be connected to the workbench 100 through a bracket and is movably arranged above the connecting frame 400. The force application component 500 can be a device such as a hydraulic cylinder 510. The force application component 500 can apply a vertically downward force to the position where the suspension is installed on the axle 10, so as to realize the fatigue durability performance test of the axle 10. Next, how the test device compensates for axial offset and angular offset will be described. During the test, vertically downward forces are applied to both ends of the axle 10. Due to the support forces of the connecting frame 400 on both ends of the axle 10, both ends of the axle 10 will bend upward. At this time, the connecting frame 400 swings along with the bending of the axle 10, so as to compensate for the angular offset of the axle 10. In addition, when the axle 10 bends, the length of the axle 10 in the axial direction will change. At this time, the second support 300 can move closer to or away from the first support 200 along the axial direction of the axle 10 to realize the axial compensation of the axle 10. In this way, the axial and angular compensation of the axle 10 during the test process is realized, so that the force-bearing condition of the axle 10 during actual work can be better simulated, thus better meeting the test requirements.

[0045] Such as Figure 1, in an embodiment of the present utility model, the test device further includes an adjusting assembly 600. The adjusting assembly 600 is arranged on the workbench 100 and is drivingly connected to the first support 200 to adjust the height of the first support 200. The adjusting assembly 600 is arranged on the workbench 100 and can support the first support 200. The adjusting assembly 600 can be an oil cylinder or other devices that can vertically expand and contract. By adjusting the adjusting assembly 600, the height of the first support 200 can be adjusted. Before the test, the axle 10 can be adjusted to be horizontal by adjusting the adjusting assembly 600, so as to compensate for the angular deviation after the axle 10 is installed on the test device and ensure the accuracy of the test results of the axle 10.

[0046] As Figure 3 , in an embodiment of the present utility model, the adjusting assembly 600 includes:

[0047] A screw rod 610, fixedly arranged on the workbench 100 and extending towards the first support 200, and the screw rod 610 penetrates through the first support 200;

[0048] At least two nuts 620, at least two nuts 620 are threadedly connected to the screw rod 610, and the first support 200 is arranged between two adjacent nuts 620 and is clamped by the nuts 620.

[0049] In this embodiment, the adjusting assembly 600 includes a screw rod 610. The screw rod 610 is fixed on the workbench 100 and extends in the vertical direction. A through hole extending vertically can be opened on the first support 200, and the screw rod 610 can pass through the through hole. At least two nuts 620 can be arranged on the screw rod 610, and at least one nut 620 is arranged on each side of the first support 200. By rotating the nuts 620, the first support 200 can be clamped and fixed to ensure the stability of the position of the first support 200 during the test. In addition, the adjusting assembly 600 can drive the first support 200 to move in the axial direction of the screw rod 610 by rotating the nuts 620, realizing the adjustment of the height of the first support 200, and has the advantages of simple structure and low processing cost.

[0050] As Figure 3 , in an embodiment of the present utility model, a plurality of screw rods 610 are provided, and the plurality of screw rods 610 are arranged at intervals along the edge of the first support 200. In this embodiment, four screw rods 610 can be provided, and the four screw rods 610 correspondingly penetrate through the four corner ends of the first support 200. By providing a plurality of screw rods 610, the supporting ability for the first support 200 can be improved, further ensuring the stability of the position of the first support 200 during the test. In addition, by respectively adjusting the nuts 620 on the four screw rods 610, the angle of the first support 200 can be adjusted, so as to compensate for the angular deviation after the axle 10 is installed on the connecting frame 400 and further improve the accuracy of the test results.

[0051] As Figure 2 , in an embodiment of the present utility model, the test device further includes a rolling member 700, and the second support 300 is in rolling connection with the workbench 100 through the rolling member 700. In this embodiment, the rolling member 700 can be a common rolling bearing. The rolling member 700 can be fixed to the bottom end of the second support 300 through a bracket. The second support 300 can be supported on the workbench 100 through the rolling member 700, and the rolling member 700 is in rolling contact with the workbench 100. In this way, it is equivalent to that the second support 300 and the workbench 100 are in rolling connection. In this way, the friction force of the second support 300 during movement can be reduced, the accuracy of the test results can be further ensured, and at the same time, the wear between the second support 300 and the workbench 100 can be reduced, and the service life of the test device can be extended.

[0052] As Figure 2 , in an embodiment of the present utility model, the test device further includes a guide rail 800. The guide rail 800 is provided on the workbench 100 and extends away from the first support 200. The rolling member 700 is in rolling connection with the guide rail 800. In this embodiment, the guide rail 800 extends along the axial direction of the axle 10. The rolling member 700 is in rolling connection with the guide rail 800. The guide rail 800 can be fixed to the workbench 100 by screwing, so as to facilitate the assembly between the guide rail 800 and the rolling member 700. In addition, a rolling groove extending along the axial direction of the axle 10 can be opened on the guide rail 800, and the rolling member 700 can roll in the rolling groove. The rolling direction of the rolling member 700 can be limited by the rolling groove, thereby ensuring the stability of the movement of the second support 300.

[0053] As Figure 2 , in an embodiment of the present utility model, at least two guide rails 800 are arranged in parallel and at intervals. A plurality of rolling members 700 are provided, and each guide rail 800 is in rolling connection with at least two rolling members 700. In order to further improve the stability of the movement of the second support 300, in this embodiment, two guide rails 800 can be provided. The two guide rails 800 are arranged in parallel and at intervals, and at least two rolling members 700 are in rolling connection on each guide rail 800. In this way, the number of connection points between the second support 300 and the guide rail 800 can be increased, and thus the local stress of the guide rail 800 and the rolling member 700 can be reduced, and the bearing capacity of the second support 300 can be improved. In addition, the two guide rails 800 can provide a more stable support and guiding effect, and reduce the shaking and deviation of the second support 300 during movement.

[0054] As Figure 1 and Figure 2 , in an embodiment of the present utility model, the connecting frame 400 includes:

[0055] The first bracket 410, the first support 200 is rotatably connected to the first bracket 410 in a connecting frame 400, and the second support 300 is rotatably connected to the first bracket 410 in another connecting frame 400;

[0056] The second bracket 420 connects the axle 10 and the first bracket 410.

[0057] In this embodiment, the connecting frame 400 includes two parts, namely the first bracket 410 and the second bracket 420. Among them, the first brackets 410 in the two connecting frames 400 are respectively rotatably connected to the first support 200 and the second support 300. The second bracket 420 is screwed to the first bracket 410, and the second bracket 420 is fixedly screwed to the axle 10. In this solution, dividing the connecting frame 400 into the first bracket 410 and the second bracket 420 can simplify the structure of each part and reduce the manufacturing difficulty. In addition, the first bracket 410 and the second bracket 420 are connected by a detachable method such as screwing, and the second bracket 420 and the axle 10 are also connected by a detachable method. In this way, the second bracket 420 that can be processed and connected to axles 10 of different specifications can be obtained. When conducting tests, only the second bracket 420 needs to be replaced according to the type of the axle 10, so that the test device can be adapted to different axles 10, improving the versatility of the test device.

[0058] Such as Figure 4 , in an embodiment of the present utility model, suspension connection positions are provided at both ends of the axle 10, and the force application assembly 500 includes:

[0059] Two hydraulic cylinders 510 are provided, and the two hydraulic cylinders 510 are arranged at intervals along the length direction of the axle 10. The hydraulic cylinder 510 has a connecting end that moves vertically;

[0060] The adapter 520 is arranged at the connecting end and is connected to the suspension connection position.

[0061] In this embodiment, the suspension connection position is the installation point for fixing the suspension on the axle 10. The force application assembly 500 includes the hydraulic cylinder 510 and the adapter 520. Among them, two hydraulic cylinders 510 are provided, and the two hydraulic cylinders 510 are arranged at intervals along the length direction of the vehicle. The hydraulic cylinder 510 expands and contracts vertically and has a connecting end that moves vertically. The adapter 520 is arranged at the connecting end. One end of the adapter 520 is screwed to the connecting end, and the other end is connected to the suspension connection position on the axle 10. By synchronously expanding and contracting the two hydraulic cylinders 510, a force can be applied to the axle 10 for testing. In addition, the adapter 520 can be configured with various specifications to adapt to different models of axles 10, so that the versatility of the test device can also be improved.

[0062] In an embodiment of the present utility model, the test device further includes a support frame 900. The support frame 900 is disposed on the workbench 100. The support frame 900 is provided with a plurality of installation points along the length direction of the axle 10, and the hydraulic cylinder 510 is fixedly disposed at the installation points. In this embodiment, the test device further includes a support frame 900. The support frame 900 can adopt the form of a gantry. The support frame 900 is arranged on the workbench 100. In this way, all components of the test device can be based on the workbench 100, so as to improve the position accuracy between the various components of the test device and ensure the accuracy of the test results. In addition, a plurality of installation points are arranged on the support frame 900 along the length direction of the axle 10. The hydraulic cylinder 510 can be fixed at the installation points by detachable connection methods such as screwing. In this way, during the test, the hydraulic cylinder 510 can be adjusted between multiple installation points according to the specifications of the axle 10, so as to meet the test requirements of different types of axles 10 and improve the versatility of the test device.

[0063] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A test device for testing a vehicle axle, characterized in that: include: Workbench; A first support, disposed on the workbench; A second support, movably disposed on the workbench to move closer to or away from the first support; Two connecting frames are provided, the first support is rotatably connected to one of the connecting frames, the second support is rotatably connected to the other connecting frame, and the connecting frames are used to carry the axle; and A force-applying component is movably disposed above the connecting frame to apply a force to the axle.

2. The test device according to claim 1, characterized in that The test device also includes an adjustment component, which is arranged on the workbench and is drivingly connected to the first support to adjust the height of the first support.

3. The test device according to claim 2, characterized in that The adjustment component comprises: A screw rod, fixed on the workbench and extending toward the first support, wherein the screw rod passes through the first support; There are at least two nuts, at least two of which are threadedly connected to the screw rod, and the first support is arranged between two adjacent nuts and clamped by the nuts.

4. The test device according to claim 3, characterized in that There are a plurality of screw rods, and the plurality of screw rods are spaced apart from each other along the edge of the first support.

5. The test device according to claim 1, characterized in that: The test device also includes a rolling member, and the second support is rollingly connected to the workbench through the rolling member.

6. The test device according to claim 5, characterized in that The test device also includes a guide rail, which is arranged on the workbench and extends away from the first support, and the rolling element is rollingly connected to the guide rail.

7. The test device according to claim 6, characterized in that At least two guide rails are arranged in parallel and at intervals, a plurality of rolling elements are provided, and each guide rail is rollingly connected to at least two rolling elements.

8. The test device according to claim 1, characterized in that: The connecting frame comprises: A first bracket, wherein the first bracket is rotatably connected to the first bracket in one of the connecting brackets, and the second bracket is rotatably connected to the first bracket in another of the connecting brackets; The second bracket connects the axle and the first bracket.

9. The test device according to claim 1, characterized in that: Suspension connection positions are provided at both ends of the axle, and the force application component includes: There are two hydraulic cylinders, which are spaced apart along the length direction of the axle, and each hydraulic cylinder has a connecting end that moves vertically; The adapter is arranged at the connection end and connected to the suspension connection position.

10. The test device according to claim 9, characterized in that The test device also includes a support frame, which is arranged on the workbench. The support frame is provided with a plurality of installation points along the length direction of the axle, and the hydraulic cylinder is fixedly arranged at the installation points.

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