CN211013854U - Bending test tool for ballastless track steel pipe concrete sleeper - Google Patents
Bending test tool for ballastless track steel pipe concrete sleeper Download PDFInfo
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- CN211013854U CN211013854U CN201921559704.7U CN201921559704U CN211013854U CN 211013854 U CN211013854 U CN 211013854U CN 201921559704 U CN201921559704 U CN 201921559704U CN 211013854 U CN211013854 U CN 211013854U
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- sleeper
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- steel pipe
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- ballastless track
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Abstract
The utility model discloses a bending test frock of ballastless track steel pipe concrete sleeper, wherein: comprises a supporting platform, a concave base plate, a round shaft and a testing machine; the bottoms of the two concave backing plates are fixed on the supporting platform, and the top surfaces of the two concave backing plates are concave; the two circular shafts are respectively placed in the concave top surfaces of the two concave base plates; the bottom of a sleeper block of a steel pipe concrete sleeper of the ballastless track is supported above the round shaft; the loading head of the testing machine is positioned above the concrete steel pipe of the concrete-filled steel pipe sleeper and used for vertically loading the concrete steel pipe. The utility model discloses can be used for detecting the bending resistance mechanical properties of sleeper, confirm the key parameter who detects, can effectively evaluate whether the concrete-filled steel tube sleeper satisfies the mechanical requirement, whether the product is qualified, can be used to guide the manufacturing and the verification of sleeper.
Description
Technical Field
The utility model belongs to the test detection area of ballastless track part, concretely relates to bending test frock of ballastless track steel pipe concrete sleeper.
Background
In a railway ballastless track system, there is a prefabricated sleeper, which is installed in a track bed or cast with concrete as a whole with the track bed for installing fasteners to further fix the upper rails and needs to maintain good connection performance with the track bed.
The steel tube concrete sleeper is a new sleeper, and a new mode and method need to be established for detecting the mechanical property of the steel tube concrete sleeper, so that the mechanical property of a sleeper product is judged, a detection rule is established, and the production, the manufacture and the acceptance of the sleeper are guided.
Aiming at the concrete filled steel tube sleeper, no method for testing the bending resistance of the concrete filled steel tube sleeper exists in the prior art.
SUMMERY OF THE UTILITY MODEL
At least one in defect or improvement demand more than prior art, the utility model provides a bending test frock of ballastless track steel pipe concrete sleeper can be used for detecting the bending resistance mechanical properties of sleeper, confirms the key parameter who detects, can effectively evaluate whether steel pipe concrete sleeper satisfies the mechanics requirement, whether the product is qualified, can be used to guide the manufacturing and the verification of sleeper. The method can be applied to urban areas, intercity, subway projects and high-speed railway projects. The product popularization can be formed, and great value-added service income and economic benefit can be brought.
For realizing the above-mentioned purpose, according to the utility model discloses an aspect provides a bending test frock of ballastless track steel pipe concrete sleeper, wherein: comprises a supporting platform, a concave base plate, a round shaft and a testing machine;
the bottoms of the two concave base plates are fixed on the supporting platform, and the top surfaces of the two concave base plates are concave;
the two circular shafts are respectively placed in the concave top surfaces of the two concave base plates;
the bottom of a sleeper block of a steel pipe concrete sleeper of the ballastless track is supported above the round shaft;
and a loading head of the testing machine is positioned above a concrete steel pipe of the concrete-filled steel pipe sleeper and is used for vertically loading the concrete steel pipe.
Preferably, the support platform comprises a support platform deck and support platform legs; the supporting platform table feet are arranged below the supporting platform table surface, and the concave base plate is fixed above the supporting platform table surface.
Preferably, the concave pad comprises a bottom plate and a column; the bottom plate with the supporting platform mesa is connected fixedly, the stand is fixed in on the bottom plate, the top surface of stand is indent arc, the circle axle is placed in the indent arc of stand.
Preferably, the bottom plate of the concave pad plate and two sides of the upright post are provided with connecting holes for the connecting piece to fix the bottom plate and the supporting platform legs.
Preferably, the round shaft is supported in the middle of the longitudinal direction of the sleeper block, namely, along the extending direction of the concrete steel pipe.
Preferably, the bottom surface and/or the lateral side surface of the sleeper block is provided with a centering mark for quick alignment with the circular shaft.
Preferably, the loading head is vertically loaded at the middle position of the concrete steel pipe outer leakage part.
Preferably, the top and/or the lateral side circumference of the middle position of the concrete steel pipe leakage part is/are provided with an alignment mark for quick alignment of the loading head.
Preferably, a loading shaft is arranged at the lower part of the loading head, spans across a plurality of concrete steel pipes and synchronously loads the concrete steel pipes.
Preferably, the bending test tool further comprises a measuring device for measuring the bending displacement value of the loaded point of the concrete steel pipe under different loads of the loading head.
The above-described preferred features may be combined with each other as long as they do not conflict with each other.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, has following beneficial effect:
the utility model discloses a bending test frock of ballastless track steel pipe concrete sleeper can be used for detecting the bending resistance mechanical properties of sleeper, confirms the key parameter who detects, can effectively evaluate whether steel pipe concrete sleeper satisfies the mechanics requirement, whether the product is qualified, can be used to guide the manufacturing and the verification of sleeper. The method can be applied to urban areas, intercity, subway projects and high-speed railway projects. The product popularization can be formed, and great value-added service income and economic benefit can be brought.
Drawings
Fig. 1 is a general schematic diagram of a bending test tool of a ballastless track steel pipe concrete sleeper according to an embodiment of the present invention;
fig. 2 is a schematic view of a concave backing plate of a bending test tool of a ballastless track concrete-filled steel tube sleeper according to an embodiment of the present invention;
fig. 3 is the utility model discloses a schematic view is overlooked to supporting platform of bending test frock of ballastless track steel pipe concrete sleeper.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other. The present invention will be described in further detail with reference to the following embodiments.
As a preferred embodiment of the utility model, as shown in fig. 1-3, the utility model provides a bending test frock of ballastless track steel pipe concrete sleeper, wherein: comprises a supporting platform 2, a concave base plate 3, a round shaft 4 and a testing machine.
The bottoms of the two concave base plates 3 are fixed on the supporting platform 2, and the top surfaces of the two concave base plates are concave; the two circular shafts 4 are respectively placed in the concave top surfaces of the two concave base plates 3; the bottom of a sleeper block 11 of a steel pipe concrete sleeper 1 of the ballastless track is supported above the round shaft 4; the loading head 5 of the testing machine is positioned above the concrete steel pipe 12 of the concrete-filled steel pipe sleeper 1 and is used for vertically loading the concrete steel pipe 12.
As shown in fig. 1 and 3, the support platform 2 comprises a support platform deck 21 and support platform legs 22; the supporting platform table feet 22 are arranged below the supporting platform table surface 21, and the concave base plate 3 is fixed above the supporting platform table surface 21. The length of the table top 21 of the supporting platform is 2500mm, the width of the table top is 500mm, and the table top is made of a steel plate with the thickness of 30-50 mm. The supporting platform legs 22 are made of I-shaped steel or cylindrical steel, the height of the supporting platform legs is matched with that of the selected testing machine, and 2 supporting platform legs are arranged at the end parts of the platform surfaces and welded with the platform surfaces or connected together through bolts.
As shown in fig. 2, the female pad 3 includes a bottom plate 31, a pillar 32; the bottom plate 31 with the supporting platform mesa 21 is connected fixedly, the stand 32 is fixed in on the bottom plate 31, the top surface of stand 32 is concave arc, designs for the same with circle axle external diameter size, circle axle 4 is placed in the concave arc of stand 32. Preferably, bolt holes are formed in the bottom plate 31 of the concave pad 3 and on both sides of the upright post 32 for fixing the bottom plate 31 and the supporting platform leg 22 by bolts.
As shown in fig. 1, the round shaft 4 is a supporting steel round shaft with an outer diameter of 50mm, and is supported in the middle of the longitudinal direction of the sleeper block 11, namely the longitudinal direction of the sleeper block 11 along the extending direction of the concrete steel pipe 12. Preferably, the bottom surface and/or the lateral side surface of the sleeper block 11 is provided with centering marks for quick alignment with the circular shaft 4.
As shown in fig. 1, the loading head 5 is vertically loaded at the middle position of the concrete steel pipe 12 leaking out. Preferably, the top and/or the lateral side circumference of the middle position of the concrete steel pipe 12 leaking part is provided with an alignment mark for quick alignment of the loading head. Preferably, a loading shaft 51 is arranged at the lower part of the loading head 5, and the loading shaft 51 spans a plurality of concrete steel pipes 12 and loads the plurality of concrete steel pipes 12 synchronously.
Preferably, the bending test tool further comprises a measuring device, and the measuring device is used for measuring the bending displacement value of the loaded point of the concrete steel pipe 12 under the action of different loads of the loading head 5.
The utility model discloses a steel pipe concrete sleeper's bending test method, including following step:
s1, a set of several prefabricated concrete filled steel tube sleepers 1 to be tested is prepared.
S2, measuring the longitudinal length of the sleeper block 11, finding the position of the symmetry axis of the sleeper block 11 by 1/2 length to serve as the sleeper block bottom supporting position, and arranging centering marks on the bottom surface and/or the transverse side surface of the sleeper block 11;
the lengths of the outer leakage parts of the two embedded concrete steel pipes 12 are measured, the positions of the symmetry axes of the concrete sleeper blocks at the two ends of the embedded concrete steel pipes are determined according to the length of 1/2, the positions are used as the loading positions of the loading head 5, and alignment marks are arranged on the tops and/or the peripheries of the transverse sides of the middle positions of the outer leakage parts of the concrete steel pipes 12.
S3, erecting the concrete filled steel tube sleeper on the round shaft 4 of the concave base plate 3 on the supporting platform 2, and aligning the round shaft 4 with the centering marks on the bottom surface and/or the transverse side surfaces of the sleeper block 11;
the loading shaft 51 of the loading head 5 is aligned with the top and/or lateral side circumference alignment marks at the middle of the concrete steel pipe 12 leaking part. And simultaneously contacts both concrete steel pipes 12 (no load applied at this time).
S4, the testing machine is started so that the loading shaft 51 of the loading head 5 simultaneously contacts the two concrete steel pipes 12 without applying pressure.
And S5, starting the testing machine according to the loading speed of not more than 2mm/S to enable the loading head 5 to vertically load the concrete steel pipe 12, and recording the load-deflection displacement value of the middle part of the steel pipe under loading until the steel pipe generates obvious yield deformation.
And S6, taking the arithmetic mean value of a group of all test pieces according to the test result.
The utility model discloses a bending test frock of ballastless track steel pipe concrete sleeper can be used for detecting the bending resistance mechanical properties of sleeper, confirms the key parameter who detects, can effectively evaluate whether steel pipe concrete sleeper satisfies the mechanics requirement, whether the product is qualified, can be used to guide the manufacturing and the verification of sleeper. The method can be applied to urban areas, intercity, subway projects and high-speed railway projects. The product popularization can be formed, and great value-added service income and economic benefit can be brought.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a bending test frock of ballastless track steel pipe concrete sleeper which characterized in that: comprises a supporting platform (2), a concave base plate (3), a round shaft (4) and a testing machine;
the bottoms of the two concave backing plates (3) are fixed on the supporting platform (2), and the top surfaces of the two concave backing plates are concave;
the two circular shafts (4) are respectively placed in the concave top surfaces of the two concave base plates (3);
the bottom of a sleeper block (11) of a steel tube concrete sleeper (1) of the ballastless track is supported above the circular shaft (4);
and a loading head (5) of the testing machine is positioned above a concrete steel pipe (12) of the concrete-filled steel tube sleeper (1) and is used for vertically loading the concrete steel pipe (12).
2. The bending test tool for the ballastless track steel tube concrete sleeper as claimed in claim 1, is characterized in that:
the supporting platform (2) comprises a supporting platform table surface (21) and supporting platform table feet (22); the supporting platform legs (22) are arranged below the supporting platform surface (21), and the concave base plate (3) is fixed above the supporting platform surface (21).
3. The bending test tool for the ballastless track steel tube concrete sleeper as claimed in claim 2, is characterized in that:
the concave backing plate (3) comprises a bottom plate (31) and a stand column (32); the bottom plate (31) with supporting platform mesa (21) are connected fixedly, stand (32) are fixed in on bottom plate (31), the top surface of stand (32) is concave arc, place circle axle (4) in the concave arc of stand (32).
4. The bending test tool for the ballastless track steel tube concrete sleeper of claim 3, characterized in that:
connecting holes are formed in the bottom plate (31) of the concave base plate (3) and on two sides of the upright post (32) and used for fixing the bottom plate (31) and the supporting platform legs (22) by connecting pieces.
5. The bending test tool for the ballastless track steel tube concrete sleeper as claimed in claim 1, is characterized in that:
the round shaft (4) is supported in the longitudinal middle of the sleeper block (11), and the longitudinal direction of the sleeper block (11) is along the extending direction of the concrete steel pipe (12).
6. The bending test tool for the ballastless track steel tube concrete sleeper of claim 5, characterized in that:
and the bottom surface and/or the transverse side surface of the sleeper block (11) are/is provided with centering marks for fast aligning with the circular shaft (4).
7. The bending test tool for the ballastless track steel tube concrete sleeper as claimed in claim 1, is characterized in that:
the loading head (5) is vertically loaded at the middle position of the concrete steel pipe (12) leakage part.
8. The bending test tool for the ballastless track steel tube concrete sleeper of claim 7, characterized in that:
and the top and/or the lateral side circumference of the middle position of the concrete steel pipe (12) leaking part is/are provided with an alignment mark for quick alignment of the loading head.
9. The bending test tool for the ballastless track steel tube concrete sleeper as claimed in claim 1, is characterized in that:
and a loading shaft (51) is arranged at the lower part of the loading head (5), and the loading shaft (51) spans a plurality of concrete steel pipes (12) and synchronously loads the concrete steel pipes (12).
10. The bending test tool for the ballastless track steel tube concrete sleeper as claimed in claim 1, is characterized in that:
the bending test tool further comprises a measuring device used for measuring the bending displacement value of the loaded point of the concrete steel pipe (12) under the action of different loads of the loading head (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921559704.7U CN211013854U (en) | 2019-09-19 | 2019-09-19 | Bending test tool for ballastless track steel pipe concrete sleeper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921559704.7U CN211013854U (en) | 2019-09-19 | 2019-09-19 | Bending test tool for ballastless track steel pipe concrete sleeper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211013854U true CN211013854U (en) | 2020-07-14 |
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ID=71476621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921559704.7U Active CN211013854U (en) | 2019-09-19 | 2019-09-19 | Bending test tool for ballastless track steel pipe concrete sleeper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211013854U (en) |
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2019
- 2019-09-19 CN CN201921559704.7U patent/CN211013854U/en active Active
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