CN216483818U - Fixing threaded sleeve for high-speed railway screw spike hammering loosening test tool - Google Patents
Fixing threaded sleeve for high-speed railway screw spike hammering loosening test tool Download PDFInfo
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- CN216483818U CN216483818U CN202121915706.2U CN202121915706U CN216483818U CN 216483818 U CN216483818 U CN 216483818U CN 202121915706 U CN202121915706 U CN 202121915706U CN 216483818 U CN216483818 U CN 216483818U
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- hammering
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- speed railway
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- spike
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Abstract
The utility model discloses a fixed screw sleeve for a high-speed railway screw spike hammering loosening test tool, which comprises a cylinder body, wherein the inner part of the cylinder body is a cavity, and a trapezoidal thread is arranged on the outer surface of the cylinder body, and a screw opening arranged on the outer surface of the top of the cylinder body.
Description
Technical Field
The utility model relates to a high-speed railway test device, in particular to a fixed threaded sleeve for a high-speed railway screw spike hammering loosening test tool.
Background
The high-speed railway has the characteristics of high speed and large transportation capacity, so that the requirement on the use stability of the fastener is extremely high. At present, the high-speed rail fasteners in China mainly comprise elastic strip VI type and elastic strip V type fasteners used by ballast tracks and WJ-7 type and WJ-8 type fasteners used by ballastless tracks, wherein the elastic strip V type and WJ-8 type fasteners both use embedded sleeves and spiral spikes as fasteners for fixing the elastic strips. Because the elastic strip belongs to the elastic structural part, in addition, the screw pitch of the spiral spike is larger, and the fit clearance between the spiral spike and the embedded sleeve is larger, the individual phenomenon that the spike is hammered and loosened in the field installation process occurs, but the phenomenon that the spike is hammered and loosened can disappear gradually along with the attenuation of the elastic strip elastic stroke after the spike is used for a period of time.
The phenomenon that the spike hammering loosening of the elastic strip V-shaped fastener and the WJ-8 type fastener only occurs in the field construction process, the influence on the later train operation is not large, and certain potential safety hazards also exist.
The design is suitable for a spike hammering loosening test tool, a standard test method is designed, the product performance is tested by simulating field spike hammering, and an internal control index is formulated, so that the best method for solving field spike hammering loosening is achieved.
The experimental frock of hammering of present design is because buried sleeve is fixed insecure in original fastener fixing base, and during the hammering, buried sleeve position takes place to remove and leads to stress relaxation to influence the experimental result of hammering, lead to the spike that the pine should appear moving back not pine move back, and the test result is inefficacy, because buried sleeve is fixed with the fastener fixing base, it is inconvenient to change, makes buried sleeve use excessively.
Therefore, the fixing screw sleeve for the high-speed railway screw spike hammering loosening test tool is convenient for fixing the embedded sleeve and the fastener fixing seat and replacing the embedded sleeve, and is worthy of research.
Disclosure of Invention
In order to solve the defects in the prior art, the utility model provides the fixed threaded sleeve for the high-speed railway screw spike hammering loosening test tool, which is convenient for fixing the embedded sleeve and the fastener fixing seat and replacing the embedded sleeve.
The purpose of the utility model is realized as follows:
the utility model provides a high-speed railway screw spike hammering pine moves back test frock and uses fixed swivel nut, includes that inside is the barrel of cavity, is located the screw socket of the top surface of barrel and is located the trapezoidal thread of barrel surface.
The trapezoidal thread is matched with the thread of the fastener fixing seat.
The top opening of the cylinder body is tightly matched with the outer surface of the top of the embedded sleeve.
C80 concrete is poured into the gap between the cylinder and the embedded sleeve, and the pulling force between the cylinder and the embedded sleeve is not less than 200 kN.
Has the positive and beneficial effects that: the fixing screw sleeve is simple in structure, the embedded sleeve is fastened in the fixing screw sleeve through concrete, the fixing screw sleeve is screwed into the fixing base through the special wrench, the upper surface is parallel and level and is fixed firmly, the phenomenon that the embedded sleeve is loosened in the hammering process is avoided, the accuracy of a spike hammering result is guaranteed, the embedded sleeve in the fixing screw sleeve can be replaced, the fixing screw sleeve can be recycled, and the influence of overuse of the embedded sleeve is effectively avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a cross-sectional view taken along the line A-A;
in the figure, the following steps are carried out: barrel 1, screw thread 2, trapezoidal thread 3, embedded sleeve 4, concrete 5.
Detailed Description
The utility model is further illustrated by the following figures and examples.
As shown in fig. 1 to 3, the fixing threaded sleeve for the high-speed railway screw spike hammering loosening test tool comprises a cylinder body 1 with a cavity inside, and a trapezoidal thread 3, wherein a threaded opening 2 located on the outer surface of the top of the cylinder body 1 is located on the outer surface of the cylinder body 1. The trapezoidal thread 3 is matched with the thread of the fastener fixing seat. The top opening of the cylinder body 1 is tightly matched with the outer surface of the top of the embedded sleeve 4. C80 concrete 5 is poured into a gap between the cylinder body 1 and the embedded sleeve 4, and the pulling force between the cylinder body 1 and the embedded sleeve 4 is not less than 200 kN.
The top of the cylinder body 1 is downwards placed on a vibrating table, the top of the embedded sleeve 4 is downwards placed in a cavity of the cylinder body 1, a round hole in the top of the cylinder body 1 is tightly combined with the top of the embedded sleeve 4 to ensure that the embedded sleeve 4 and the cylinder body 1 are coaxial, C80 concrete 5 is poured into the cavity, the cylinder body is vibrated to be compact, water-retaining maintenance is carried out for 7 days, and the pulling force of the embedded sleeve and the cylinder body 1 is not less than 200 kN.
Hammering behind screw in spiral spike with barrel 1 and pre-buried sleeve 4 (after solidifying), then pass through trapezoidal thread 3 cooperations with barrel 1 and fastener fixing base, twist the screw socket 2 that moves 1 top of barrel through the special spanner of design and twist barrel 1 into the fastener fixing base, guarantee that the upper surface parallel and level of barrel 1 and the upper surface of fastener fixing base and fixed firm, the not hard up phenomenon of pre-buried sleeve does not appear at the hammering in-process, guarantee the accuracy of spike hammering result.
The embedded sleeve 4 in the barrel 1 can be replaced and recycled, the influence of overuse of the embedded sleeve 4 is effectively avoided, the test conditions are fixed, and the test flow is standardized and used as factory inspection.
The fixing screw sleeve is simple in structure, the embedded sleeve is fastened in the fixing screw sleeve through concrete, the fixing screw sleeve is screwed into the fixing base through the special wrench, the upper surface is parallel and level and is fixed firmly, the phenomenon that the embedded sleeve is loosened in the hammering process is avoided, the accuracy of a spike hammering result is guaranteed, the embedded sleeve in the fixing screw sleeve can be replaced, the fixing screw sleeve can be recycled, and the influence of overuse of the embedded sleeve is effectively avoided.
Claims (3)
1. The utility model provides a high-speed railway screw spike hammering pine moves back experimental frock with fixed swivel nut which characterized in that: the device comprises a cylinder body with a cavity inside, and a trapezoidal thread with a screw opening positioned on the outer surface of the top of the cylinder body and positioned on the outer surface of the cylinder body; c80 concrete is poured into the gap between the cylinder and the embedded sleeve, and the pulling force between the cylinder and the embedded sleeve is not less than 200 kN.
2. The high-speed railway screw spike hammering loosening test fixture fixing threaded sleeve according to claim 1, is characterized in that: the trapezoidal thread is matched with the thread of the fastener fixing seat.
3. The high-speed railway screw spike hammering loosening test fixture fixing threaded sleeve according to claim 1, is characterized in that: the top opening of the cylinder body is tightly matched with the outer surface of the top of the embedded sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121915706.2U CN216483818U (en) | 2021-08-16 | 2021-08-16 | Fixing threaded sleeve for high-speed railway screw spike hammering loosening test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121915706.2U CN216483818U (en) | 2021-08-16 | 2021-08-16 | Fixing threaded sleeve for high-speed railway screw spike hammering loosening test tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216483818U true CN216483818U (en) | 2022-05-10 |
Family
ID=81432950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121915706.2U Active CN216483818U (en) | 2021-08-16 | 2021-08-16 | Fixing threaded sleeve for high-speed railway screw spike hammering loosening test tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216483818U (en) |
-
2021
- 2021-08-16 CN CN202121915706.2U patent/CN216483818U/en active Active
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