CN216051131U - Special testing machine for bearing capacity of welded hollow sphere node - Google Patents
Special testing machine for bearing capacity of welded hollow sphere node Download PDFInfo
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- CN216051131U CN216051131U CN202122005348.8U CN202122005348U CN216051131U CN 216051131 U CN216051131 U CN 216051131U CN 202122005348 U CN202122005348 U CN 202122005348U CN 216051131 U CN216051131 U CN 216051131U
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Abstract
The utility model provides a special testing machine for bearing capacity of a welded hollow ball joint, which comprises a rack, a clamp seat, a hydraulic mechanism, a servo driving mechanism and a plurality of stiffening plates, wherein the rack is provided with a testing space; the movable clamp seat is movably arranged in the test space to divide the test space into a stretching space and a compressing space, and a high-strength screw rod is clamped in a stretching jaw of the clamp seat; the hydraulic mechanism comprises an oil cylinder, a sensor, an oil cylinder fixing seat and a sensor fixing seat; the sensor is arranged on the output end of the oil cylinder and fixed on the sensor fixing seat; the servo driving mechanism comprises a motor and four worm and gear mechanisms, and the movable clamp seat is sleeved on the worm; the other end of the high-strength screw rod is clamped at the end parts of the steel pipes at the two ends of the welded hollow ball joint to be detected through the nut and the stiffening plate. The utility model has simple structure and convenient operation, and meets the tensile, compressive and bending bearing capacity tests of the welded hollow ball joint.
Description
Technical Field
The utility model relates to the field of engineering detection, in particular to a special tester for bearing capacity of a welded hollow sphere node.
Background
At present, domestic space steel net racks are mainly divided into the following three types, namely, a bolt ball joint net rack; secondly, welding a hollow sphere node net rack; thirdly, welding the steel plate node net rack. The welded hollow sphere node has long application history, is the most widely applied space steel truss node form at present, and has the advantages of simple node structure, clear stress, convenient connection, no node eccentricity and the like. With the wide application of the welded hollow sphere node net rack, the importance of the node quality and the node performance is increasingly prominent, especially the node bearing capacity performance. The bearing capacity test of the welded hollow ball joint is an important test method for testing the quality of the welded ball joint, and mainly comprises a tensile limit bearing capacity test, a compressive limit bearing capacity test and a welded hollow ball bending test. At present, a special tester for the bearing capacity of a welded hollow ball node is not available in the market of China, so that a special tester for the bearing capacity of the welded hollow ball node needs to be designed urgently, the blank existing in the field of the special tester for the bearing capacity of the welded hollow ball node in China is filled, the test method is unified, and the test process is simplified.
The traditional bearing capacity test of the welded hollow ball joint is generally carried out by adopting a universal material testing machine or a common pressure testing machine. The traditional test method is limited by the tonnage of the test machine and the test space, and cannot meet the large-tonnage and large-specification bearing capacity test of the welded hollow ball joint. For example, the maximum tonnage of a traditional testing machine is generally 200 tons, and the testing machine can only meet the test of a hollow welding ball with the diameter of less than 300mm, while the node compression limit bearing capacity of the WSR9045(Q345) (with the diameter of 900mm) hollow welding ball with the maximum specification given in the JG/T11-2009 standard is 1327 tons, which is far higher than the maximum tonnage of the traditional testing machine. Aiming at the defects, the utility model designs the special tester for the bearing capacity of the welded hollow sphere joint, and simultaneously meets the bearing capacity tests of the welded hollow sphere joints of all specifications.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a special tester for the bearing capacity of a welded hollow sphere node, which meets tensile and compressive limit bearing capacity tests of the welded hollow sphere node and bending tests of the welded hollow sphere.
The utility model is realized by the following steps: a special tester for bearing capacity of a welded hollow sphere node comprises a rack, a clamp seat, a hydraulic mechanism, a servo driving mechanism and a plurality of stiffening plates, wherein the rack is provided with a test space; the clamp seat comprises a fixed clamp seat and a movable clamp seat, the fixed clamp seat is fixedly arranged on an inner side wall of the test space, the movable clamp seat is movably arranged in the test space to divide the test space into a tensile space and a compression space, a C-shaped tensile jaw is arranged on one side of the fixed clamp seat corresponding to the movable clamp seat, and a high-strength screw rod is clamped in each tensile jaw; the hydraulic mechanism comprises an oil cylinder, a sensor, an oil cylinder fixing seat and a sensor fixing seat; the oil cylinder fixing seat is arranged on one side of the rack, the oil cylinder is fixed on the outer side wall of the oil cylinder fixing seat, and the sensor is arranged on the output end of the oil cylinder and fixed on the sensor fixing seat; the servo driving mechanism comprises a motor and four worm and gear mechanisms, a cavity is arranged on the sensor fixing seat, the motor and the worm and gear mechanisms are arranged in the cavity of the sensor fixing seat, the motor drives the four worm and gear mechanisms to rotate synchronously, one end of a worm of the worm and gear mechanism penetrates through the sensor fixing seat and the oil cylinder fixing seat and is arranged in the test space, and the movable clamp seat is sleeved on the worm; the stiffening plates are fixedly arranged at the end parts of the two ends of the welded hollow sphere node steel pipe to be detected, and the other end of the high-strength screw rod is clamped at the end parts of the steel pipe at the two ends of the welded hollow sphere node to be detected through nuts and the stiffening plates.
Furthermore, the plurality of stiffening plates comprise two main stiffening plates and two secondary stiffening plates, two ends of each main stiffening plate are welded with the inner wall of the steel pipe, one end of each secondary stiffening plate is vertically welded with the side wall of each main stiffening plate, the other end of each secondary stiffening plate is welded with the inner wall of the steel pipe, and the distance between the two main stiffening plates is larger than the diameter of the high-strength screw and smaller than the diameter of the nut.
Furthermore, one end of the high-strength screw rod is clamped in the stretching jaw through a nut.
The utility model has the advantages that: the utility model relates to a special tester for bearing capacity of a steel mesh frame welded hollow ball node, which adopts a double-space horizontal structure, a test space is divided into a stretching space and a compressing space by arranging a clamp seat, the welded hollow ball node is clamped in the stretching space and the compressing space by a servo driving mechanism, a sensor fixing seat is pressed by arranging a hydraulic mechanism, the sensor fixing seat is moved and drives a worm to move, the worm drives the movable clamp seat to move so as to adjust the stretching space and the compressing space, so that the welded hollow ball node to be tested is subjected to tensile force or pressure, and the tensile limit bearing capacity test of the clamp seat on the welded hollow ball node can be conveniently carried out by arranging stiffening plates at the two end parts of the welded hollow ball node steel pipe to be tested; the utility model has simple structure and convenient operation, and meets the requirements of a tensile ultimate bearing capacity test, a compressive ultimate bearing capacity test and a welding hollow ball bending test of a welding hollow ball node; the bearing capacity test of the large-tonnage and large-size welded hollow sphere node is met; the requirements of stress and deformation under the action of load are met.
Drawings
The utility model will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the special tester for bearing capacity of the welded hollow sphere node.
FIG. 2 is a schematic structural diagram of a use state of a compression limit bearing capacity test of the special tester for the bearing capacity of the welded hollow ball node.
Fig. 3 is a schematic structural diagram of a use state of a bending test of a welded hollow sphere of the special tester for bearing capacity of a welded hollow sphere joint of the utility model.
FIG. 4 is a schematic structural diagram of a tensile limit bearing capacity test of the special welding hollow ball joint bearing capacity testing machine in a use state.
FIG. 5 is a front view of the structure of the present invention for welding the hollow ball joint with the stiffening plate and the high strength screw.
FIG. 6 is a side view of the structure of the present invention welding the hollow ball joints with the stiffening plates and the high strength screw.
The reference numbers illustrate: the device comprises a rack 1, a test space 11, a stretching space 111, a compression space 112, a clamp seat 2, a fixed clamp seat 21, a movable clamp seat 22, a stretching jaw 23, a hydraulic mechanism 3, an oil cylinder 31, a sensor 32, an oil cylinder fixing seat 33, a sensor fixing seat 34, a cavity 341, a servo driving mechanism 4, a worm 41, a stiffening plate 5, a main stiffening plate 51, a secondary stiffening plate 52, a high-strength screw 6, a nut 61, a welded hollow sphere node 100 and a steel pipe 101.
Detailed Description
The embodiment of the utility model provides the special tester for the bearing capacity of the welded hollow sphere node, which meets the tensile and compressive limit bearing capacity tests of the welded hollow sphere node and the bending test of the welded hollow sphere, and meets the bearing capacity tests of the welded hollow sphere nodes of all specifications.
In order to solve the above problems, the technical solution in the embodiments of the present invention has the following general idea: the special testing machine for the bearing capacity of the welded hollow ball node adopts a double-space horizontal structure, a test space is divided into a stretching space and a compressing space by arranging a clamp seat, the welded hollow ball node is clamped in the stretching space and the compressing space by a servo driving mechanism, a sensor fixing seat is pressed by arranging an oil cylinder to move the sensor fixing seat and drive a worm to move, the worm drives the movable clamp seat to move so as to adjust the stretching space and the compressing space, so that the welded hollow ball node to be tested is subjected to tensile force or pressure, and the tensile limit bearing capacity test of the welded hollow ball node by the clamp seat can be conveniently carried out by arranging stiffening plates at the two end parts of a steel pipe of the welded hollow ball node to be tested; the utility model has simple structure and convenient operation, and meets the requirements of a tensile ultimate bearing capacity test, a compressive ultimate bearing capacity test and a welding hollow ball bending test of a welding hollow ball node; the bearing capacity test of the large-tonnage and large-size welded hollow sphere node is met; the requirements of stress and deformation under the action of load are met.
For better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the embodiments.
Referring to fig. 1 to 3, the special tester for bearing capacity of a welded hollow ball joint of the present invention includes a frame 1, a clamp seat 2, a hydraulic mechanism 3, a servo driving mechanism 4 and a plurality of stiffener plates 5, wherein the frame 1 has a test space 11; the clamp seat 2 comprises a fixed clamp seat 21 and a movable clamp seat 22, the fixed clamp seat 21 is fixedly arranged on an inner side wall of the test space 11, the movable clamp seat 22 is movably arranged in the test space 11 to divide the test space 11 into a tensile space 111 and a compression space 112, a C-shaped tensile jaw 23 is arranged on one side of the fixed clamp seat 21 corresponding to one side of the movable clamp seat 22, a high-strength screw 6 is clamped in each tensile jaw 23, and one end of each high-strength screw 6 is clamped in each tensile jaw 23 through a nut 61; the hydraulic mechanism 3 comprises an oil cylinder 31, a sensor 32, an oil cylinder fixing seat 33 and a sensor fixing seat 34; the oil cylinder fixing seat 33 is arranged on one side of the rack 1, the oil cylinder 31 is fixed on the outer side wall of the oil cylinder fixing seat 33, and the sensor 32 is arranged on the output end of the oil cylinder 31 and fixed on the sensor fixing seat 34; the servo driving mechanism 4 comprises a motor (not shown) and four worm and gear mechanisms (not shown), a cavity 341 is arranged on the sensor fixing seat 34, the motor and the worm and gear mechanisms are arranged in the cavity of the sensor fixing seat 34, the motor drives the four worm and gear mechanisms to synchronously rotate, one end of a worm 41 of the worm and gear mechanism penetrates through the sensor fixing seat 34 and the oil cylinder fixing seat 33 and is arranged in the test space 11, and the movable clamp seat 22 is sleeved on the worm 41; the stiffening plates 5 are fixedly arranged at the end parts of the steel pipes 101 at the two ends of the welded hollow sphere node 100 to be detected, the plurality of stiffening plates 5 comprise two main stiffening plates 51 and two secondary stiffening plates 52, the two ends of the main stiffening plates 51 are welded with the inner wall of the steel pipe 101, one end of each secondary stiffening plate 52 is vertically welded with the side wall of the main stiffening plate 51, the other end of each secondary stiffening plate is welded with the inner wall of the steel pipe 101, and the other end of each high-strength screw 6 is clamped at the end part of the steel pipe 101 of the welded hollow sphere node 100 to be detected through a nut 61 and the stiffening plate 5; the distance between the two main stiffening plates 51 is larger than the diameter of the high-strength screw 6 and smaller than the diameter of the nut 61.
Preferably, the frame 1, the cylinder fixing seat 33, the sensor fixing seat 34 and the clamp seat 2 are all made of steel castings, and are subjected to finish machining after ZG310-570 heat treatment, so that the precision, stability and reliability of the testing machine are ensured. The novel practical welding hollow ball joint bearing capacity test device can meet the joint bearing capacity test of large-tonnage and large-specification welding hollow balls. The measuring range of the tester is designed to be 1500 tons, and the tester can meet the node bearing capacity test of all welded hollow sphere specifications in the steel truss welded hollow sphere node JG/T11-2009 standard.
The working principle is as follows: as shown in fig. 2, the compression limit bearing capacity test: firstly, arranging a welded hollow sphere node 100 to be tested in a compression space 112 of a rack 1, arranging steel pipes 101 at two ends of the welded hollow sphere node 100 between horizontal central positions of a movable clamp seat 22 and an oil cylinder fixing seat 33, driving four worm and gear mechanisms to synchronously rotate through a motor, enabling a worm 41 of the worm and gear mechanisms to rotate, driving the movable clamp seat 22 to move by the worm 41, enabling the welded hollow sphere node 100 to be clamped between the movable clamp seat 22 and the oil cylinder fixing seat 33, driving a sensor fixing seat 34 to move outwards through an oil cylinder 31 of a hydraulic mechanism 3 after clamping, enabling a servo driving mechanism 4 to move outwards, driving the movable clamp seat 22 to move, and applying pressure F to the welded hollow sphere node 100 so as to complete a compression-resistant limit bearing capacity test;
as shown in fig. 3, the welded hollow ball joint bending test: the only difference between the test method and the compression-resistant limit bearing capacity test is that the welded hollow sphere node 100 is placed at an eccentric position between the movable clamp seat 22 and the oil cylinder fixing seat 33, and the bending test of the welded hollow sphere node is completed in an eccentric axial force loading mode.
As shown in fig. 4, tensile ultimate bearing capacity test: the welded hollow sphere node 100 to be tested is arranged in a stretching space 111 of a rack 1 (namely between a movable clamp seat 22 and a fixed clamp seat 21), one end of a high-strength screw 6 is locked and clamped in a stretching jaw 23 through a nut 61, stiffening plates 5 are welded in steel pipes 101 at two ends of the welded hollow sphere node 100, then the other end of the high-strength screw 6 penetrates through two main stiffening plates 51 and is locked and clamped between the two main stiffening plates 51 through the nut 61, four worm and gear mechanisms are driven by a motor to synchronously rotate, so that a worm 41 of the worm and gear mechanisms rotates, the worm 41 drives the movable clamp seat 22 to move, the welded hollow sphere node 100 is tensioned between the movable clamp seat 22 and the fixed clamp seat 21, and after tensioning, a sensor fixing seat 34 is driven by an oil cylinder 31 of a hydraulic mechanism 3 to move outwards, and (3) enabling the servo driving mechanism 4 to move outwards to drive the movable clamp seat 22 to move outwards to stretch the welded hollow sphere node 100 so as to complete the tensile limit bearing capacity test.
The utility model has the advantages that: the utility model relates to a special testing machine for bearing capacity of a welded hollow sphere node, which adopts a double-space horizontal structure, a test space is divided into a tensile space 111 and a compression space 112 by arranging a clamp seat 2, the welded hollow sphere node 100 is clamped in the tensile space 111 and the compression space 112 by a servo driving mechanism 4, a sensor fixing seat 34 is pressed by arranging a hydraulic mechanism 3, the sensor fixing seat 34 moves and drives a worm 41 to move, the worm 41 drives a movable clamp seat 22 to move so as to adjust the tensile space 111 and the compression space 112, the welded hollow sphere node 100 to be tested is subjected to tensile force or pressure, and the clamp seat 2 can conveniently carry out a tensile limit bearing capacity test on the welded hollow sphere node 100 by arranging stiffening plates 5 at the end parts of steel pipes at two ends of the welded hollow sphere node 100 to be tested; the utility model has simple structure and convenient operation, and meets the requirements of a tensile ultimate bearing capacity test, a compressive ultimate bearing capacity test and a welding hollow ball bending test of a welding hollow ball node; the bearing capacity test of the large-tonnage and large-size welded hollow sphere node is met; the requirements of stress and deformation under the action of load are met.
Although specific embodiments of the utility model have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the utility model, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the utility model, which is to be limited only by the appended claims.
Claims (3)
1. The utility model provides a welding clean shot node bearing capacity special test machine which characterized in that: comprises that
A frame having a test space;
the clamp seat comprises a fixed clamp seat and a movable clamp seat, the fixed clamp seat is fixedly arranged on an inner side wall of the test space, the movable clamp seat is movably arranged in the test space to divide the test space into a tensile space and a compression space, a C-shaped tensile jaw is arranged on one side of the fixed clamp seat corresponding to one side of the movable clamp seat, and a high-strength screw rod is clamped in each tensile jaw;
the hydraulic mechanism comprises an oil cylinder, a sensor, an oil cylinder fixing seat and a sensor fixing seat; the oil cylinder fixing seat is arranged on one side of the rack, the oil cylinder is fixed on the outer side wall of the oil cylinder fixing seat, and the sensor is arranged on the output end of the oil cylinder and fixed on the sensor fixing seat;
the servo driving mechanism comprises a motor and four worm and gear mechanisms, a cavity is arranged on the sensor fixing seat, the motor and the worm and gear mechanisms are arranged in the cavity of the sensor fixing seat, the motor drives the four worm and gear mechanisms to rotate synchronously, one end of a worm of the worm and gear mechanism penetrates through the sensor fixing seat and the oil cylinder fixing seat and is arranged in the test space, and the movable clamp seat is sleeved on the worm;
and the plurality of stiffening plates are fixedly arranged at the end parts of the two ends of the welded hollow ball joint steel pipe to be detected, and the other end of the high-strength screw rod is clamped at the end parts of the steel pipe at the two ends of the welded hollow ball joint to be detected through the nut and the stiffening plates.
2. The special tester for bearing capacity of the welded hollow ball joint according to claim 1, characterized in that: the plurality of stiffening plates comprise two main stiffening plates and two secondary stiffening plates, two ends of each main stiffening plate are welded with the inner wall of the steel pipe, one end of each secondary stiffening plate is vertically welded with the side wall of each main stiffening plate, the other end of each secondary stiffening plate is welded with the inner wall of the steel pipe, and the distance between the two main stiffening plates is larger than the diameter of the high-strength screw and smaller than the diameter of the nut.
3. The special tester for bearing capacity of the welded hollow ball joint according to claim 1, characterized in that: one end of the high-strength screw rod is clamped in the stretching jaw through a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122005348.8U CN216051131U (en) | 2021-08-24 | 2021-08-24 | Special testing machine for bearing capacity of welded hollow sphere node |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122005348.8U CN216051131U (en) | 2021-08-24 | 2021-08-24 | Special testing machine for bearing capacity of welded hollow sphere node |
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| Publication Number | Publication Date |
|---|---|
| CN216051131U true CN216051131U (en) | 2022-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122005348.8U Active CN216051131U (en) | 2021-08-24 | 2021-08-24 | Special testing machine for bearing capacity of welded hollow sphere node |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216051131U (en) |
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2021
- 2021-08-24 CN CN202122005348.8U patent/CN216051131U/en active Active
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