CN210513887U - Straight-falling type axle test device - Google Patents
Straight-falling type axle test device Download PDFInfo
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- CN210513887U CN210513887U CN201920632070.7U CN201920632070U CN210513887U CN 210513887 U CN210513887 U CN 210513887U CN 201920632070 U CN201920632070 U CN 201920632070U CN 210513887 U CN210513887 U CN 210513887U
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- axle
- sleeve
- cylindrical surface
- supporting
- shaft
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Abstract
The utility model relates to a direct-falling axle test device, which comprises two sleeves, a support shaft and a support ring; the two sleeves are respectively in clearance fit with axle heads at two ends of an axle; the sleeve is matched with the outer cylindrical surface of the supporting shaft below the sleeve through the upper cylindrical surface of the sleeve, and rolls by taking the axis of the supporting shaft as a shaft; the outer cylindrical surface of the supporting shaft penetrates into the supporting ring. The utility model discloses according to the experimental principle of axle product, according to interior arc surface and outer cylinder face geometrical structure between the complex adaptivity, design out the straight combination formula test device that falls of exempting from the installation between sleeve and the supporting axle, it has safe and reliable to verify through practice, experimental data is truer than adopting traditional frock, test device need not to maintain, operate characteristics such as simple and easy saving time, in cost, have the commonality because of the bearing, can satisfy the experimental demand of many varieties, the drop-in again of frock expense has been reduced, on experimental load carrying capacity, more can satisfy the experimental demand of large-tonnage axle.
Description
Technical Field
The utility model relates to a test device, concretely relates to directly fall formula axle test device is applicable to the car axle product test.
Background
A vertical bending fatigue test device for an automobile axle product generally adopts a mode that fixed positioning sleeves are additionally arranged on shaft heads at two ends of an axle, and a test force is applied to a plate spring support of the axle. In the past test, the sleeve at the shaft head end is usually welded or assembled by bolts, so that the test requirement of the axle of a small-tonnage product is met. However, with the increase of the load tonnage of an axle product, the inadaptability of the original tool is exposed more and more, the welded sleeve joint surface cracks in a large load test, particularly in a cyclic reciprocating fatigue test, the bolt assembly type tool deforms or even breaks, the authenticity of test data is directly influenced, and potential safety hazards are generated. Therefore, how to ensure the real test result and meet the test requirement of large-tonnage products is a problem which needs to be solved urgently.
Disclosure of Invention
The utility model aims at providing a directly fall formula axle test device to the not enough of above-mentioned prior art.
The utility model aims at realizing through the following technical scheme:
a straight-falling axle test device is composed of two sleeves 1, a support shaft 2 and a support ring 3;
the two sleeves 1 are respectively in clearance fit with axle head 4 (test pieces) at two ends of an axle, and axle head nuts are arranged at two ends of the axle head 4;
the sleeve 1 is provided with an inner cylindrical surface groove, the sleeve 1 is matched with an outer cylindrical surface of the supporting shaft 2 below the sleeve 1 through the cylindrical surface, and the sleeve rolls by taking the axis of the supporting shaft 2 as a shaft;
the outer cylindrical surface of the supporting shaft 2 is inserted into the supporting ring 3;
the outer surface of the supporting ring 3 is provided with a U-shaped notch capable of accommodating the sleeve 1 along the axis direction, the sleeve 1 is limited, the outer cylindrical surface of the supporting shaft 2 protrudes, the inner cylindrical surface on the surface of the sleeve 1 is meshed with the outer cylindrical surface of the supporting shaft 2, and the inner cylindrical surface and the outer cylindrical surface are in rolling fit in the test process;
the supporting ring 3 is placed into the equipment with the base, and the axial position of the supporting ring 3 is limited through the base limiting plate.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses according to the experimental principle of axle product, according to interior arc surface and outer cylinder face geometrical structure between the complex adaptivity, design out the straight combination formula test device that falls of exempting from the installation between sleeve and the supporting axle, it has safe and reliable to verify through practice, experimental data is truer than adopting traditional frock, test device need not to maintain, operate characteristics such as simple and easy saving time, in cost, have the commonality because of the bearing, can satisfy the experimental demand of many varieties, the drop-in again of frock expense has been reduced, on experimental load carrying capacity, more can satisfy the experimental demand of large-tonnage axle.
Drawings
Fig. 1 and fig. 2 are schematic structural diagrams of the straight-falling axle test device of the present invention.
In the figure, 1, a sleeve 2, a supporting shaft 3, a supporting ring 4 and an axle shaft head are arranged.
Detailed Description
In the axle test, the assembling forms of the two end shaft heads are consistent, so the technical content is described by taking one end shaft head as an example.
As shown in fig. 1-2, the sleeve 1 and inner diameter are mated with a one-sided axle stub shaft 4 (test piece), consistent with conventional test methods. The sleeve 1 is staggered and vertical to the axis of the sleeve 1, and a semi-cylindrical surface is milled on the outer surface of the sleeve, so that the sleeve 1 can be matched with the outer cylindrical surface of the supporting shaft 2 below the sleeve through the cylindrical surface and rolls by taking the axis of the supporting shaft 2 as an axis;
the outer cylindrical surface of the supporting shaft 2 is inserted into the supporting ring 3;
on the outer surface of the supporting ring 3, a U-shaped notch is milled along the axial direction to accommodate the sleeve 1 and limit the sleeve 1;
on the outer surface of the supporting ring 3, a U-shaped notch is milled along the axis direction, so that the outer cylindrical surface of the supporting shaft 2 protrudes, the inner cylindrical surface on the surface of the sleeve 1 is meshed with the outer cylindrical surface of the supporting shaft 2, and the inner cylindrical surface and the outer cylindrical surface are in rolling fit in the test process.
The supporting ring 3 is placed into the equipment with the base, and the axial position of the supporting ring is limited through the base limiting plate. The assembly relationship here is conventional and will not be described in detail.
The working process is as follows:
the bearing shaft 2 penetrates the bearing ring 3 to form an assembly. And the two sets of assemblies are respectively placed in the supporting bases at the two ends of the test equipment, and the U-shaped notch on the supporting ring 3 faces upwards.
Two sleeves 1 with inner cylindrical grooves are respectively arranged on axle head 4 at two ends of an axle, and a spindle head nut is screwed at the end of the spindle head to prevent the sleeves 1 from sliding off when the axle is hoisted;
hoisting the axle, rotating the sleeve 1 to enable the inner cylindrical surface groove on the surface of the sleeve to face downwards and fall onto the supporting shaft 2, adjusting the position of the axle, screwing the spindle head nut, completing assembly, and entering a subsequent test stage.
When the test product is replaced, the supporting shaft 2 and the supporting ring 3 do not need to be replaced, and only the rotating sleeve 1 needs to be replaced to adapt to the outer diameter of the shaft head of different axle products.
Claims (1)
1. The utility model provides a directly fall formula axle test device which characterized in that: consists of two sleeves (1), a supporting shaft (2) and a supporting ring (3);
the two sleeves (1) are respectively in clearance fit with axle head (4) at two ends of an axle, and axle head nuts are arranged at two ends of the axle head (4); the sleeve (1) is provided with an inner cylindrical surface groove, the sleeve (1) is meshed with an outer cylindrical surface of the supporting shaft (2) below the sleeve through the inner cylindrical surface, rolls by taking the axis of the supporting shaft (2) as a shaft and is matched with the supporting shaft (2) in a rolling way;
the outer cylindrical surface of the supporting shaft (2) penetrates into the supporting ring (3); a U-shaped notch capable of accommodating the sleeve (1) is formed in the outer surface of the supporting ring (3) along the axis direction, the sleeve (1) is limited, and the outer cylindrical surface of the supporting shaft (2) is protruded; the supporting ring (3) is fixed with the equipment along with the base, and the axial position of the supporting ring (3) is limited through the base limiting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920632070.7U CN210513887U (en) | 2019-05-06 | 2019-05-06 | Straight-falling type axle test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920632070.7U CN210513887U (en) | 2019-05-06 | 2019-05-06 | Straight-falling type axle test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210513887U true CN210513887U (en) | 2020-05-12 |
Family
ID=70542464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920632070.7U Active CN210513887U (en) | 2019-05-06 | 2019-05-06 | Straight-falling type axle test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210513887U (en) |
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2019
- 2019-05-06 CN CN201920632070.7U patent/CN210513887U/en active Active
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