CN216386602U - Concrete sleeper static load testing machine - Google Patents
Concrete sleeper static load testing machine Download PDFInfo
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- CN216386602U CN216386602U CN202122908488.6U CN202122908488U CN216386602U CN 216386602 U CN216386602 U CN 216386602U CN 202122908488 U CN202122908488 U CN 202122908488U CN 216386602 U CN216386602 U CN 216386602U
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Abstract
The utility model provides a static load testing machine for concrete sleepers, which can quickly and accurately measure the mechanical properties of various sleepers on the same equipment. A static load testing machine for concrete sleepers comprises a main frame, a movable trolley, a hydraulic loading system and a lifting device, wherein the movable trolley can transversely slide relative to the main frame, and the lifting device can drive the sleepers to vertically move relative to the main frame; the lifting device comprises a lifting mechanism and a fine adjustment mechanism, the lifting mechanism comprises a lifting adjusting seat, a lifting shaft, a steel wire rope, a guide shaft and a lifting cylinder, the lifting shaft is arranged in the lifting adjusting seat, the end part of the lifting shaft is provided with the lifting cylinder, the lifting adjusting seat is provided with a guide groove, one end of the steel wire rope is arranged on a fixed wheel, the other end of the steel wire rope bypasses a steering wheel I and a steering wheel II and is arranged on the guide shaft, the guide shaft is provided with the lower end of the lifting shaft and transversely penetrates through the lifting adjusting seat, and the guide shaft can move back and forth; the fine adjustment mechanism is linked with the lifting cylinder and is used for adjusting the reciprocating movement of the lifting cylinder.
Description
Technical Field
The utility model relates to a static load testing machine for a concrete sleeper, and belongs to the technical field of testing machines.
Background
The sleeper is an important bearing part of a railway track system. Most sleepers are the most vulnerable members of railway concrete structures because they are in open air service and are subject to positive and negative bi-directional bending moments. The actual service life of the railway sleeper in China is generally 20-30 years, and even less than 10 years. The investment of the railway is huge, and in order to exert the economic benefit of the railway equipment to the maximum extent, the service life of the concrete structure, especially the sleeper structure, needs to be greatly prolonged. The high-performance concrete technology is adopted to manufacture the concrete sleeper with the strength grade of C60, and the long-term and durable performances of the concrete sleeper can be improved on the premise of ensuring that the mechanical property of the sleeper is not reduced, so that the quality of the concrete sleeper is greatly improved, and the service life of the concrete sleeper is prolonged. Under the guidance of the design idea, on the basis of the existing research at home and abroad, the research on the application test of the high-performance concrete for the sleeper is imperative.
The static load testing machine of the existing concrete sleeper can not meet the standard requirement. At present, the mechanical properties of the sleeper are mainly reflected by static load anti-cracking performance and fatigue performance. The static load mechanical property test of the high-performance concrete sleeper is carried out according to TB/T1879-2002 & lt & ltprestressed concrete sleeper static load crack resistance test method & gt and GB/T37330-2019 & lt & gt ballasted track sleeper concrete sleeper & gt. 3 sleepers (IIIa types) with qualified appearance quality are randomly extracted from each mixing ratio, and the sleeper static load crack resistance test is completed within 48 hours after the sleepers are taken out of the pool and demoulded. The sleeper has certain requirements on loading speed and control, and various mechanical test requirements cannot be met simultaneously due to various specifications of the sleeper.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a concrete sleeper static load testing machine which can quickly and accurately measure the mechanical properties of various sleepers on the same equipment.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
a static load testing machine for concrete sleepers comprises a main frame, a movable trolley, a hydraulic loading system and a lifting device, wherein the movable trolley can transversely slide relative to the main frame, and the lifting device can drive the sleepers to vertically move relative to the main frame;
the lifting device comprises a lifting mechanism and a fine adjustment mechanism, the lifting mechanism comprises a lifting adjusting seat, a lifting shaft, a steel wire rope, a guide shaft and a lifting cylinder, the lifting shaft is arranged in the lifting adjusting seat, the end part of the lifting shaft is provided with the lifting cylinder, the lifting adjusting seat is provided with a guide groove, one end of the steel wire rope is arranged on a fixed wheel, the other end of the steel wire rope bypasses a steering wheel I and a steering wheel II and is arranged on the guide shaft, the guide shaft is provided with the lower end of the lifting shaft and transversely penetrates through the lifting adjusting seat, and the guide shaft can move back and forth;
the fine adjustment mechanism is linked with the lifting cylinder and is used for adjusting the reciprocating movement of the lifting cylinder.
According to the preferable scheme of the static load testing machine for the concrete sleeper, the fine adjustment mechanism comprises a lifting adjusting handle, an adjusting screw rod and a supporting seat, one end of the adjusting screw rod is arranged on the lifting cylinder in a threaded mode, and the other end of the adjusting screw rod penetrates through the lifting adjusting handle to be arranged on the supporting seat in a threaded mode.
According to the optimal scheme of the concrete sleeper static load testing machine, a hydraulic loading system comprises a loading cylinder, a loading beam, a guide rod, a load sensor, an upper pressure head and a lower pressure head, one end of the loading cylinder is arranged on a host frame, the other end of the loading cylinder is arranged on the loading beam, the loading cylinder drives the loading beam to vertically move along the guide rod relative to the host frame, the upper pressure head is arranged at the upper end of the host frame, the load sensor is arranged on the upper pressure head, and the lower pressure head is arranged on the loading beam.
The concrete sleeper static load test machine preferred scheme goes up the pressure head and passes through coupling assembling and sets up on host computer frame, and coupling assembling includes spherical joint bearing, two spherical poles, two springs and two ball recesses, and spherical pole one end sets up on host computer frame, and the other end sets up on the ball recess, and the ball recess is fixed on last pressure head, and spherical joint bearing sets up between entablature and last pressure head, and the spring suit is on the spherical pole.
The concrete sleeper static load test machine preferred scheme, travelling car set up on the dolly frame, are equipped with adjusting part between dolly frame and the base, and adjusting part is including adjusting the seat, adjusting pole and pole setting, and pole setting one end sets up on adjusting the seat, and pole setting other end threaded connection adjusts the pole and sets up on the dolly frame.
According to the preferred scheme of the static load testing machine for the concrete sleeper, a host frame comprises a base, an upper cross beam and four stand columns, one ends of the stand columns are connected to the base, and the other ends of the stand columns are connected with the upper cross beam.
According to the preferable scheme of the concrete sleeper static load testing machine, three load sensors, three upper pressure heads and three lower pressure heads are provided.
The utility model has the advantages that: the sleeper is realized by a lifting device when the sleeper is not stressed in a static load test; the overall structure is simple, the arrangement of a plurality of load sensors improves the detection precision, ensures that the detection result can reflect the overall mechanical performance of the sleeper, and improves the accuracy of the detection data; the static load sleeper testing machine can be used for detecting the mechanical property of various material sleepers.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.
Fig. 1 is a schematic front view of an embodiment of the present invention.
FIG. 2 is a schematic front view of the cart of the present invention.
FIG. 3 is a schematic view of a ball socket according to an embodiment of the present invention.
Fig. 4 is a schematic view of a ball stud according to an embodiment of the present invention.
Fig. 5 is a schematic view of a lifting device according to an embodiment of the utility model.
FIG. 1, base; 2. an adjusting seat; 3. adjusting a rod; 4. erecting a rod; 5. a trolley frame; 6. a lifting shaft; 7. a lifting cylinder; 8. adjusting a rod; 9. a steering wheel; 10. a column; 11. a loading cylinder; 12. a load beam; 13. a guide bar; 14. a load sensor; 15. an upper pressure head; 16. an upper cross beam; 17. a sleeper; 18. moving the trolley; 19. a moving ball, 20, a ball rod; 21. a spring; 22. a spherical plain bearing; 23. locking the nut; 24. a ball recess 25, a lift adjustment seat; 26. a lifting shaft; 27 a guide groove; 28. a lifting adjusting handle; 29. adjusting the screw rod; 30. a supporting seat; 31. fixing the wheel seat; 32. a steering wheel seat; 33. a wire rope; 34. a guide shaft; 35. and a steering wheel II.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, 2 and 5, a concrete sleeper static load testing machine comprises a main frame, a movable trolley 18, a hydraulic loading system and a lifting device, wherein the movable trolley 18 can slide transversely relative to the main frame, and the lifting device can drive a sleeper 17 to move vertically relative to the main frame;
the host frame comprises a base 1, an upper cross beam 16 and four upright posts 10, wherein one ends of the upright posts 10 are connected to the base 1, and the other ends of the upright posts are connected with the upper cross beam 16 and fixed 23 through locking nuts;
in the embodiment, the hydraulic loading system comprises a loading cylinder 11, a loading beam 12, a guide rod 13, a load sensor 14, an upper pressure head 15 and a lower pressure head 25, wherein one end of the loading cylinder 11 is arranged on a host frame, the other end of the loading cylinder 11 is arranged on the loading beam 12, the loading cylinder 11 drives the loading beam 12 to vertically move along the guide rod 13 relative to the host frame, the guide rod 13 prevents unbalance loading in the static load test process, the upper pressure head 15 is arranged at the upper end of the host frame, the load sensor 14 is arranged on the upper pressure head 15, the lower pressure head 25 is arranged on the loading beam 12, the number of the load sensor 14, the upper pressure head 15 and the lower pressure head 25 is three, and the stress point is one or two stress points in the middle according to the test requirement during the test;
the lifting device comprises a lifting mechanism and a fine adjustment mechanism, the lifting mechanism comprises a lifting adjusting seat 25, a lifting shaft 26, a steel wire rope 33, a guide shaft 34 and a lifting cylinder 7, the lifting shaft 26 is arranged in the lifting adjusting seat 25, the end part of the lifting cylinder 7 is provided with the lifting cylinder 7, a guide groove 27 is formed in the lifting adjusting seat 25, one end of the steel wire rope 33 is arranged on a fixed wheel, the other end of the steel wire rope 33 bypasses a steering wheel I and a steering wheel II and is arranged on the guide shaft 34, the guide shaft 34 is arranged at the lower end of the lifting shaft 26 and transversely penetrates through the lifting adjusting seat 25, the guide shaft 34 can move back and forth through the guide groove 27, the fixed wheel is arranged on the loading beam 12 through a fixed wheel seat 31, the steering wheel I is arranged on the base 1 through a steering wheel seat I32, and the steering wheel II 35 is arranged on the lifting cylinder 7;
the fine adjustment mechanism is linked with the lifting cylinder 7 and is used for adjusting the reciprocating movement of the lifting cylinder 7, the fine adjustment mechanism comprises a lifting adjusting handle 28, an adjusting screw rod 29 and a supporting seat 30, one end of the adjusting screw rod 29 is arranged on the lifting cylinder 7 in a threaded mode, and the other end of the adjusting screw rod 29 penetrates through the lifting adjusting handle 28 and is arranged on the supporting seat 30 in a threaded mode.
Referring to fig. 3 and 4, the upper ram 15 is disposed on the main frame through a connecting assembly, which includes a spherical joint bearing 22, two spherical rods 20, two springs 21, and two spherical recesses 24, wherein one end of each spherical rod 20 passes through the upper beam 16, the other end is disposed on the spherical recess 24, the spherical recess 24 is fixed on the upper ram, and the spherical joint bearing 22 is disposed between the upper beam and the upper ram; the upper pressure head 15 is tightly attached to the sleeper through spherical adjustment.
In this embodiment, the moving trolley 18 is arranged on the trolley frame 5, an adjusting component is arranged between the trolley frame 5 and the base 1, the adjusting component comprises an adjusting seat 2, an adjusting rod 3 and a vertical rod 4, one end of the vertical rod 4 is arranged on the adjusting seat 2, and the other end of the vertical rod 4 is in threaded connection with the adjusting rod 3 and is arranged on the trolley frame 5.
The device can realize that under the condition of providing a certain pressure for the loading cylinder 11, the piston rod is pushed to move to drive the loading beam 12 to ascend, the sleeper 17 is pushed to be in contact with the upper pressure head 15, and the stress magnitude of the sleeper when the sleeper requires cracks is measured through the load sensor 14; during the no-load lifting process before the sleeper 17 is stressed, because the sleeper placement is biased to one side, the auxiliary lifting of the lifting device plays a crucial role: in the lifting process of the loading cylinder 11, the loading beam 12 rises together to drive the fixed wheel below the loading beam to rise, the steel wire rope bypasses the fixed wheel, the steering wheel I and the steering wheel II to drive the lifting cylinder 7 to rise together, and the supporting seat 30 on the lifting cylinder 7 rises together at the end, which is not stressed, of the sleeper.
The functions of: force at which cracks appear during static load test
The sleeper is placed on the movable 18 trolley, the movable trolley 18 is moved to a stress position required by the sleeper, the testing machine is started, the crack piece is pressed down when a crack appears below the sleeper, and the force value when the crack appears is automatically recorded by the computer.
Function two: maximum destructive power
The sleeper is placed on the movable trolley 18, the movable trolley 18 is moved to a stress position required by the sleeper, the testing machine is started until the sleeper is broken, and the computer automatically records the maximum force value.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A concrete sleeper static load testing machine comprises a main frame, a movable trolley (18), a hydraulic loading system and a lifting device, wherein the movable trolley (18) can transversely slide relative to the main frame, and the lifting device can drive a sleeper (17) to vertically move relative to the main frame; the method is characterized in that:
the lifting device comprises a lifting mechanism and a fine adjustment mechanism, the lifting mechanism comprises a lifting adjusting seat (25), a lifting shaft (26), a steel wire rope (33), a guide shaft (34) and a lifting cylinder (7), the lifting shaft (26) is arranged in the lifting adjusting seat (25), the end part of the lifting shaft is provided with the lifting cylinder (7), the lifting adjusting seat (25) is provided with a guide groove (27), one end of the steel wire rope (33) is arranged on a fixed wheel, the other end of the steel wire rope (33) is arranged on the guide shaft (34) by bypassing a steering wheel I and a steering wheel II, the guide shaft (34) is provided with the lower end of the lifting shaft (26) and transversely penetrates through the lifting adjusting seat (25), and the guide shaft (34) can move back and forth in the guide groove (27);
the fine adjustment mechanism is linked with the lifting cylinder (7) and is used for adjusting the reciprocating movement of the lifting cylinder (7).
2. The concrete sleeper static load testing machine of claim 1, wherein: the fine adjustment mechanism comprises a lifting adjusting handle (28), an adjusting screw rod (29) and a supporting seat (30), one end of the adjusting screw rod (29) is arranged on the lifting cylinder (7) in a threaded mode, and the other end of the adjusting screw rod (29) penetrates through the lifting adjusting handle (28) to be arranged on the supporting seat (30) in a threaded mode.
3. The concrete sleeper static load testing machine of claim 1, wherein: the hydraulic loading system comprises a loading cylinder (11), a loading beam (12), a guide rod (13), a load sensor (14), an upper pressure head (15) and a lower pressure head (25), one end of the loading cylinder (11) is arranged on a host frame, the other end of the loading cylinder is arranged on the loading beam (12), the loading cylinder (11) drives the loading beam (12) to move up and down along the guide rod (13) relative to the host frame in the vertical direction, the upper pressure head (15) is arranged at the upper end of the host frame, the load sensor (14) is arranged on the upper pressure head (15), and the lower pressure head (25) is arranged on the loading beam (12).
4. The concrete sleeper static load testing machine of claim 3, wherein: go up pressure head (15) and set up on host computer frame through coupling assembling, coupling assembling includes spherical joint bearing (22), two spherical pole (20), two spring (21) and two ball concave seats (24), spherical pole (20) one end sets up on host computer frame, and the other end sets up on ball concave seat (24), and ball concave seat (24) are fixed on last pressure head, and spherical joint bearing (22) set up between entablature and last pressure head, and spring (21) suit is on spherical pole (20).
5. The concrete sleeper static load testing machine of claim 1, wherein: travelling car (18) set up on dolly frame (5), are equipped with adjusting part between dolly frame (5) and base (1), and adjusting part is including adjusting seat (2), adjusting pole (3) and pole setting (4), and pole setting (4) one end sets up on adjusting seat (2), and pole setting (4) other end threaded connection adjusts pole (3) and sets up on dolly frame (5).
6. A concrete sleeper static load testing machine according to any one of claims 1 to 5, characterized in that: the host frame comprises a base (1), an upper cross beam (16) and four upright posts (10), wherein one ends of the upright posts (10) are connected to the base (1), and the other ends of the upright posts are connected with the upper cross beam (16).
7. A concrete sleeper static load testing machine according to any one of claims 1 to 5, characterized in that: the number of the load sensors (14), the upper pressure heads (15) and the lower pressure heads (25) is three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122908488.6U CN216386602U (en) | 2021-11-25 | 2021-11-25 | Concrete sleeper static load testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122908488.6U CN216386602U (en) | 2021-11-25 | 2021-11-25 | Concrete sleeper static load testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216386602U true CN216386602U (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122908488.6U Active CN216386602U (en) | 2021-11-25 | 2021-11-25 | Concrete sleeper static load testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216386602U (en) |
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2021
- 2021-11-25 CN CN202122908488.6U patent/CN216386602U/en active Active
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