A steel plate ring bearing capacity detection device

Abstract

The utility model relates to a load capacity detection technical field especially a kind of steel plate ring bearing capacity detection device, including bottom plate, fixedly connected with support frame on the bottom plate, fixedly connected with second hydraulic rod on the support frame, the lower end of second hydraulic rod is fixedly connected with abutment disc, the bottom plate is connected with pivot through rotating mechanism, the pivot upper end is fixedly connected with placing disc, the support frame is fixedly connected with first hydraulic rod symmetrically, steel plate ring is placed on the placing disc, the oil inlet of first hydraulic rod and second hydraulic rod is evenly provided with pressure gauge. The utility model carries out detection to the axial and radial bearing capacity of steel plate ring simultaneously, ensures the accuracy of detection result.

Description

Technical Field

[0001] This utility model relates to the field of load testing technology, and in particular to a steel plate ring load testing device. Background Technology

[0002] The steel plate ring of a concrete pole (usually referring to the steel ring flange at the top of the pole, such as the guy wire connection flange, or the base flange at the base of the pole, such as the foundation connection flange) is the core load-bearing node and connection hub in the pole structure. During operation, the steel plate ring must simultaneously bear the longitudinal load transmitted by the pole's own weight, the lateral bending moment caused by wind load, and the complex stress caused by foundation settlement or conductor tension differences. Especially under bending moment, significant stress concentration occurs at the interface between the steel plate ring and concrete, and in the connection areas such as the flange welds, making them the weakest links in the structure most prone to fatigue cracking or brittle failure. Therefore, accurate testing of the load-bearing capacity of the steel plate ring is a key technical means to ensure the long-term safe operation of power lines and prevent catastrophic accidents such as pole collapse and line breakage.

[0003] In existing technologies, the load-bearing capacity testing of steel plate rings mostly adopts the hydraulic loading method: axial pressure is applied to the steel plate ring by a hydraulic jack, and when the preset pressure value is reached, it is observed whether visible cracks appear. If no damage occurs, it is considered qualified; otherwise, it is unqualified.

[0004] However, this method has significant limitations—it only tests the axial compressive bearing capacity of the plate ring, completely ignoring the verification of its radial bearing capacity. In reality, as a thin-walled annular structure, the plate ring, in actual service, may face radial bending moments caused by uneven foundation settlement, conductor galloping, or lateral wind loads, in addition to axial pressure. If only the axial bearing capacity is tested without testing its ability to resist radial deformation, the test results will deviate significantly from actual working conditions, affecting the accuracy of the test results. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the failure to detect the ability to resist radial deformation, which leads to test results that deviate significantly from actual working conditions and affect the accuracy of the test results. Therefore, this invention proposes a steel plate ring bearing capacity testing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A steel plate ring bearing capacity testing device is designed, including a base plate, a support frame fixedly connected to the base plate, a second hydraulic rod fixedly connected to the support frame, an abutment plate fixedly connected to the lower end of the second hydraulic rod, a rotating shaft connected to the base plate via a rotating mechanism, a placement plate fixedly connected to the upper end of the rotating shaft, a first hydraulic rod symmetrically fixedly connected to the support frame, a steel plate ring placed on the placement plate, and pressure gauges installed at the oil inlets of both the first and second hydraulic rods.

[0008] Preferably, the first hydraulic rod and the second hydraulic rod are hydraulic rods with a self-locking function.

[0009] Preferably, a gear is fixedly connected to the rotating shaft, and a rack meshes with the gear, the rack being moved by a moving mechanism.

[0010] Preferably, the moving mechanism includes a slide groove, which is formed on the base plate. A slider is slidably disposed in the slide groove, and the slider is fixedly connected to the rack. A threaded rod is threadedly connected to the slider, and the threaded rod is rotatably connected to the slide groove through a bearing.

[0011] Preferably, a rotating block is fixedly connected to one end of the threaded rod.

[0012] Preferably, the rotating mechanism includes a fixed frame, and the fixed frame is rotatably connected to the rotating shaft via a rotary bearing, and the fixed frame is fixedly connected to the base plate.

[0013] Preferably, a column is fixedly connected to the base plate, a protective shell is fixedly connected to the column, and a through hole is provided on the protective shell, through which the first hydraulic rod passes.

[0014] Preferably, the inner wall of the protective shell abuts against the placement tray.

[0015] The present invention provides a plate ring bearing capacity testing device, the advantages of which are: a second hydraulic rod applies pressure along the axial direction of the plate ring to test its axial bearing capacity; a first hydraulic rod applies pressure along the radial direction of the plate ring to test its radial bearing capacity. By simultaneously testing the axial and radial bearing capacity of the plate ring, the accuracy of the test results is ensured. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a steel plate ring bearing capacity testing device proposed in this utility model;

[0017] Figure 2 This utility model proposes a three-dimensional steel plate ring bearing capacity testing device (protective shell concealed) Figure 1 ;

[0018] Figure 3This utility model proposes a three-dimensional steel plate ring bearing capacity testing device (protective shell concealed) Figure 2 ;

[0019] Figure 4 This is a schematic diagram of the protective shell of a steel plate ring bearing capacity testing device proposed in this utility model.

[0020] In the diagram: 1. Base plate; 2. Support frame; 3. First hydraulic rod; 4. Second hydraulic rod; 5. Abutment plate; 6. Protective shell; 7. Column; 8. Slide groove; 9. Threaded rod; 10. Rack; 11. Gear; 12. Shaft; 13. Fixing frame; 14. Placement plate; 15. Steel plate ring; 16. Sliding block; 17. Through hole; 18. Rotating block; 19. Pressure gauge. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Example 1: Refer to Figure 1-3 A plate ring bearing capacity testing device includes a base plate 1, a support frame 2 fixedly connected to the base plate 1, a second hydraulic rod 4 fixedly connected to the support frame 2, a contact plate 5 fixedly connected to the lower end of the second hydraulic rod 4, a rotating shaft 12 connected to the base plate 1 via a rotating mechanism, a placement plate 14 fixedly connected to the upper end of the rotating shaft 12, first hydraulic rods 3 symmetrically fixedly connected to the support frame 2, and a plate ring 15 placed on the placement plate 14. Pressure gauges 19 are installed at the oil inlets of both the first hydraulic rod 3 and the second hydraulic rod 4 to measure the pressure applied by the two hydraulic rods, thereby ensuring that pressure is no longer applied when a preset value is reached. The second hydraulic rod 4 applies pressure along the axial direction of the plate ring 15 to test its axial bearing capacity; the first hydraulic rod 3 applies pressure along the radial direction of the plate ring 15 to test its radial bearing capacity. By simultaneously testing the axial and radial bearing capacity of the plate ring 15, the accuracy of the test results is ensured.

[0023] The first hydraulic rod 3 and the second hydraulic rod 4 are hydraulic rods with a self-locking function. After the first hydraulic rod 3 and the second hydraulic rod 4 stop moving, they can self-lock and no longer move.

[0024] The rotating mechanism includes a fixed frame 13. The fixed frame 13 is rotatably connected to the rotating shaft 12 via a slewing bearing. The fixed frame 13 is fixedly connected to the base plate 1. Since the rotating shaft 12 will be subjected to axial force during axial load testing, a slewing bearing capable of withstanding axial force is used to support the rotating shaft 12.

[0025] Example 2: Refer to Figure 1-3In another preferred embodiment of this utility model, based on embodiment 1, a gear 11 is fixedly connected to the rotating shaft 12, and a rack 10 meshes with the gear 11. The rack 10 moves through a moving mechanism, which drives the rack 10 to move, causing the gear 11 to rotate, thereby causing the abutment plate 5 to rotate, which in turn drives the steel plate ring 15 to rotate, so as to perform radial bearing capacity testing at different positions of the steel plate ring 15 and ensure the accuracy of the test results.

[0026] Example 3: Reference Figure 1-3 As another preferred embodiment of this utility model, based on embodiment 2, the moving mechanism includes a slide groove 8, which is opened on the base plate 1. A slider 16 is slidably arranged in the slide groove 8. The slider 16 is fixedly connected to the rack 10. A threaded rod 9 is threaded through the slider 16. The threaded rod 9 is rotatably connected to the slide groove 8 through a bearing. A rotating block 18 is fixedly connected to one end of the threaded rod 9. By utilizing the self-locking property of the threaded connection, after adjusting the position of the rack 10 by rotating and adjusting the threaded rod 9, the abutment plate 5 can be fixed to prevent the abutment plate 5 from rotating.

[0027] During testing, the second hydraulic rod 4 extends, causing the abutment plate 5 to move and apply pressure to the steel plate ring 15 for axial load testing; the first hydraulic rod 3 extends and abuts against the outer wall of the steel plate ring 15, applying pressure for radial load testing. When radial load testing is required at different positions of the steel plate ring 15, rotating the rotating block 18 causes the threaded rod 9 to rotate, adjusting the sliding position of the slider 16 in the slide groove 8 through threaded transmission, causing the rack 10 to move and drive the gear 11 to rotate, thereby causing the abutment plate 5 and the steel plate ring 15 to rotate. At this time, the extension and retraction of the first hydraulic rod 3 can perform radial load testing at different circumferential positions of the steel plate ring 15.

[0028] Example 4: Reference Figure 4 As another preferred embodiment of this utility model, based on embodiment 2, a column 7 is fixedly connected to the base plate 1, and a protective shell 6 is fixedly connected to the column 7. A through hole 17 is opened on the protective shell 6, and the first hydraulic rod 3 passes through the through hole 17. The inner wall of the protective shell 6 abuts against the placement plate 14. When the unqualified steel plate ring 15 is damaged during the inspection process, the protective shell 6 can play a protective role, preventing the fragments of the steel plate ring 15 from flying everywhere, thereby improving the safety of the inspection process.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A steel plate ring bearing capacity testing device, comprising a base plate (1), characterized in that, A support frame (2) is fixedly connected to the base plate (1), a second hydraulic rod (4) is fixedly connected to the support frame (2), an abutment plate (5) is fixedly connected to the lower end of the second hydraulic rod (4), a rotating shaft (12) is connected to the base plate (1) through a rotating mechanism, a placement plate (14) is fixedly connected to the upper end of the rotating shaft (12), a first hydraulic rod (3) is symmetrically fixedly connected to the support frame (2), a steel plate ring (15) is placed on the placement plate (14), and pressure gauges (19) are provided at the oil inlets of the first hydraulic rod (3) and the second hydraulic rod (4).

2. The steel plate ring bearing capacity testing device according to claim 1, characterized in that, The first hydraulic rod (3) and the second hydraulic rod (4) are hydraulic rods with self-locking function.

3. The steel plate ring bearing capacity testing device according to claim 1, characterized in that, A gear (11) is fixedly connected to the rotating shaft (12), and a rack (10) meshes with the gear (11). The rack (10) moves through a moving mechanism.

4. The steel plate ring bearing capacity testing device according to claim 3, characterized in that, The moving mechanism includes a slide (8), which is opened on the base plate (1). A slider (16) is slidably arranged in the slide (8). The slider (16) is fixedly connected to the rack (10). A threaded rod (9) is threaded through the slider (16). The threaded rod (9) is rotatably connected to the slide (8) through a bearing.

5. The steel plate ring bearing capacity testing device according to claim 4, characterized in that, One end of the threaded rod (9) is fixedly connected to a rotating block (18).

6. The steel plate ring bearing capacity testing device according to claim 1, characterized in that, The rotating mechanism includes a fixed frame (13), and the fixed frame (13) is rotatably connected to the rotating shaft (12) via a rotary bearing. The fixed frame (13) is fixedly connected to the base plate (1).

7. The steel plate ring bearing capacity testing device according to claim 1, characterized in that, A column (7) is fixedly connected to the base plate (1), and a protective shell (6) is fixedly connected to the column (7). A through hole (17) is provided on the protective shell (6), and the first hydraulic rod (3) passes through the through hole (17).

8. The steel plate ring bearing capacity testing device according to claim 7, characterized in that, The inner wall of the protective shell (6) abuts against the placement tray (14).

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