Building steel strength detection device

Abstract

The utility model relates to the technical field of building equipment, in particular to a building steel strength detection device which comprises a base, a mounting frame arranged on the upper side of the base, a lifting electromagnetic adsorption mechanism arranged in the mounting frame and a balancing weight arranged on the lower side of the lifting electromagnetic adsorption mechanism. The supporting and positioning mechanisms are arranged on the two sides of the balancing weight correspondingly, the supporting and telescopic inserting mechanisms are arranged at openings in the two sides of the mounting frame correspondingly and matched with the two supporting and positioning mechanisms in an inserting mode, and the vertical guide mechanism is arranged between the upper side of the base and the upper side of the interior of the mounting frame. The two supporting and positioning mechanisms and the lifting electromagnetic adsorption mechanism are in sliding fit with the vertical guide mechanism; according to the device, the four inserting rods are used for providing auxiliary supporting for the balancing weight, the load of the electromagnet is relieved, the fault risk is reduced, and the balancing weight can be prevented from falling off when the electromagnet loses excitation; and meanwhile, the vertical guide mechanism ensures that the balancing weight falls vertically, so that the detection safety and the result accuracy are improved.

Description

Technical Field

[0001] This utility model relates to the field of construction machinery technology, specifically to a strength testing device for construction steel. Background Technology

[0002] In recent years, my country's construction industry has developed rapidly, with its technological level and construction scale significantly surpassing the world average. In the construction engineering system, steel bars, cement, and steel are core building materials widely used in various construction projects. Construction steel can be divided into two main categories based on its application: steel for steel structures and steel bars for reinforced concrete structures. The former encompasses materials such as ordinary carbon structural steel and low-alloy structural steel, and its products include diverse forms such as shaped steel sections and steel pipes; common angle steel, I-beams, and channel steel all fall under the category of shaped steel sections. The latter focuses on providing mechanical support for concrete structures. Given that the performance of steel directly affects building safety, it must undergo strict strength testing procedures before entering the market to ensure compliance with engineering construction standards.

[0003] A Chinese patent publication, patent number CN212410330U, describes a steel strength testing device for building inspection. It uses an electromagnet to magnetically attract a weight, which is then lifted to a set height by a motor and rope before falling freely. The strength is tested by observing the deformation of the building steel after impact.

[0004] However, the counterweight of this device relies on the single attraction of an electromagnet for lifting. Prolonged high-load operation can easily lead to electromagnet failure, affecting the reliability of the equipment. Once the electromagnet loses its magnetism unexpectedly, the counterweight may fall from a height, threatening the safety of operators and equipment. Secondly, during testing, the falling process of the counterweight is easily affected by lateral forces such as aerodynamic factors and mechanical assembly errors, which can cause the impact direction to deviate and affect the accuracy of the test results. Utility Model Content

[0005] The purpose of this invention is to provide a strength testing device for building steel, which solves the problems of existing building steel strength testing devices where the counterweight relies solely on electromagnet attraction, which is prone to electromagnet failure under long-term high loads and poses a risk of falling when demagnetized; and the counterweight is easily affected by lateral forces during fall, causing the impact direction to deviate and affecting the accuracy of the test.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a building steel strength testing device, comprising a base, a mounting frame disposed on the upper side of the base, a lifting electromagnetic adsorption mechanism disposed within the mounting frame, a counterweight disposed on the lower side of the lifting electromagnetic adsorption mechanism, and further comprising support positioning mechanisms disposed on both sides of the counterweight, support telescopic insertion mechanisms disposed at the openings on both sides of the mounting frame and interlocking with the two support positioning mechanisms, and a vertical guide mechanism disposed between the upper side of the base and the upper side inside the mounting frame, wherein the two support positioning mechanisms and the lifting electromagnetic adsorption mechanism are all slidably engaged with the vertical guide mechanism.

[0007] Furthermore, the support and positioning mechanism includes a lifting plate on one side of the counterweight, a positioning block on one side of the lifting plate, and insertion holes at both ends of the positioning block.

[0008] Furthermore, the supporting telescopic plug-in mechanism includes a side plate provided on one side opening of the mounting frame, two first electric push rods provided on the outside of the side plate and spaced apart, a connecting plate connected to the output end of the first electric push rods, and a plug-in rod connected to one side of the connecting plate and cooperating with the corresponding plug hole.

[0009] Furthermore, an infrared receiver is provided on one side of one of the positioning blocks, and an infrared transmitter is provided on the inner side of the mounting bracket between the two side plates.

[0010] Furthermore, the upper side of the lifting plate is provided with a guide hole; the vertical guide mechanism includes two guide columns arranged at intervals on the upper side of the base, one end of each guide column passes through two corresponding guide holes and is connected to the upper interior of the mounting frame, and the counterweight is located between the two guide columns.

[0011] Furthermore, the lifting electromagnetic adsorption mechanism includes a second electric push rod on the upper side of the mounting frame, a mounting plate connected to the output end of the second electric push rod and located inside the mounting frame, and an electromagnet on the lower side of the mounting plate. The lower side of the electromagnet is magnetically adsorbed to the upper side of the counterweight, and the mounting plate is slidably connected to two guide columns.

[0012] Furthermore, a steel plate fixing mechanism is provided on the upper side of the base, and the steel plate fixing mechanism is located between two guide columns.

[0013] Furthermore, an installation groove is provided on the upper side of the base and between the two guide posts, and a sliding groove is provided on the lower side of the interior of the installation groove; the steel plate fixing mechanism includes a bidirectional threaded rod rotatably connected inside the installation groove, a motor provided on one side of the base and connected to one end of the bidirectional threaded rod, two threaded sleeves threadedly engaged with the bidirectional threaded rod and spaced apart, a slider connected to the lower side of the threaded sleeve and slidingly engaged with the sliding groove, a connecting block connected to the upper side of the two threaded sleeves respectively, a U-shaped positioning shell connected to the upper side of the connecting block, an adjusting screw threadedly connected to the upper side of the U-shaped positioning shell, and a clamping plate rotatably connected to one end of the adjusting screw and located inside the U-shaped positioning shell. The connecting block is located above the base, and the two U-shaped positioning shells are symmetrically arranged.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] Before conducting strength testing on building steel, this invention utilizes the coordinated operation of a lifting electromagnetic adsorption mechanism, a counterweight, a support positioning mechanism, a support telescopic insertion mechanism, and a vertical guide mechanism. Four insertion rods work in conjunction with the support positioning mechanism to provide auxiliary support for the counterweight, distributing the adsorption pressure of the electromagnet and reducing the possibility of equipment malfunction due to prolonged high-load operation. In the event of accidental demagnetization of the electromagnet, the insertion rods mechanically limit the counterweight, preventing it from falling and ensuring the safety of the testing operation. Simultaneously, the vertical guide mechanism constrains the movement trajectory of the counterweight, ensuring it falls vertically during the impact testing phase, eliminating lateral deviation from the test results, thereby improving the safety and accuracy of the building steel strength testing. Attached Figure Description

[0016] Figure 1 This is a cross-sectional schematic diagram of the building steel strength testing device of this utility model;

[0017] Figure 2 This is a side sectional view of the building steel strength testing device of this utility model;

[0018] Figure 3 This is a system control block diagram of the building steel strength testing device of this utility model.

[0019] In the diagram: 1. Base; 2. Steel plate fixing mechanism; 3. Mounting bracket; 4. Lifting electromagnetic adsorption mechanism; 5. Counterweight; 6. Vertical guide mechanism; 7. Support positioning mechanism; 8. Guide column; 9. Lifting plate; 10. Guide hole; 11. Positioning block; 12. Insertion hole; 13. Infrared transmitter; 14. Infrared receiver; 15. First electric push rod; 16. Connecting plate; 17. Insertion rod; 18. Side plate; 19. Electromagnet; 20. Mounting plate; 21. Second electric push rod; 22. Slide groove; 23. Mounting groove; 24. Motor; 25. Bidirectional threaded rod; 26. Threaded sleeve; 27. Slider; 28. Connecting block; 29. ​​U-shaped positioning shell; 30. Clamping plate; 31. Adjusting screw. Detailed Implementation

[0020] Please see Figure 1-3 A structural steel strength testing device includes a base 1, a mounting frame 3 connected to the upper side of the base 1, a lifting electromagnetic adsorption mechanism 4 disposed within the mounting frame 3, a counterweight 5 disposed below the lifting electromagnetic adsorption mechanism 4, a support positioning mechanism 7 disposed on both sides of the counterweight 5, a support telescopic insertion mechanism disposed at the openings on both sides of the mounting frame 3 and inserted into the two support positioning mechanisms 7, and a vertical guide mechanism 6 disposed between the upper side of the base 1 and the upper side inside the mounting frame 3. The two support positioning mechanisms 7 and the lifting electromagnetic adsorption mechanism 4 are all slidably engaged with the vertical guide mechanism 6.

[0021] The support positioning mechanism 7 includes a lifting plate 9 installed on one side of the counterweight 5, a positioning block 11 connected to one side of the lifting plate 9, and insertion holes 12 respectively opened at both ends of the positioning block 11. The support telescopic insertion mechanism includes a side plate 18 connected to an opening on one side of the mounting frame 3, two first electric push rods 15 installed on the outer side of the side plate 18 and spaced apart, a connecting plate 16 connected to the output end of the first electric push rods 15, and a insertion rod 17 connected to one side of the connecting plate 16 and cooperating with the corresponding insertion hole 12. An infrared receiver 14 is installed on one side of one positioning block 11, and an infrared transmitter 13 located between the two side plates 18 is installed on one side of the interior of the mounting frame 3.

[0022] The upper side of the lifting plate 9 is provided with a guide hole 10; the vertical guide mechanism 6 includes two guide columns 8 connected to the upper side of the base 1 and spaced apart. One end of each guide column 8 passes through two corresponding guide holes 10 and is connected to the upper side of the interior of the mounting frame 3, and the counterweight 5 is located between the two guide columns 8. The lifting electromagnetic adsorption mechanism 4 includes a second electric push rod 21 installed on the upper side of the mounting frame 3, a mounting plate 20 connected to the output end of the second electric push rod 21 and located inside the mounting frame 3, and an electromagnet 19 installed on the lower side of the mounting plate 20. The lower side of the electromagnet 19 is magnetically adsorbed to the upper side of the counterweight 5, and the mounting plate 20 is slidably connected to the two guide columns 8.

[0023] A steel plate fixing mechanism 2 is provided on the upper side of the base 1, and the steel plate fixing mechanism 2 is located between two guide columns 8. An installation groove 23 is provided on the upper side of the base 1 and between the two guide posts 8. A sliding groove 22 is provided on the lower side of the interior of the installation groove 23. The steel plate fixing mechanism 2 includes a bidirectional threaded rod 25 rotatably connected to the interior of the installation groove 23 via a bearing, a motor 24 installed on one side of the base 1 and connected to one end of the bidirectional threaded rod 25, two threaded sleeves 26 threadedly engaged with the bidirectional threaded rod 25 and spaced apart, a slider 27 connected to the lower side of the threaded sleeve 26 and slidably engaged with the sliding groove 22, a connecting block 28 connected to the upper side of the two threaded sleeves 26 respectively, a U-shaped positioning shell 29 connected to the upper side of the connecting block 28, an adjusting screw 31 threadedly connected to the upper side of the U-shaped positioning shell 29, and a clamping plate 30 rotatably connected to one end of the adjusting screw 31 and located inside the U-shaped positioning shell 29. The connecting block 28 is located above the base 1, the two U-shaped positioning shells 29 are symmetrically arranged, and the other end of the adjusting screw 31 is connected to a handle located on the outside of the U-shaped positioning shell 29.

[0024] Working Process and Principle: When the device is running, the PLC controller activates the second electric push rod 21 and energizes the electromagnet 19. The second electric push rod 21 drives the mounting plate 20 to rise along the guide column 8, and the electromagnet 19 on the lower side of the mounting plate 20 attracts the counterweight 5 and moves upward synchronously. When the infrared receiver 14 on the positioning block 11 senses the signal from the infrared transmitter 13 in the mounting frame 3, the PLC controller immediately controls the four first electric push rods 15 to extend synchronously, driving the plug-in rod 17 to insert into the plug holes 12 at both ends of the two positioning blocks 11, achieving temporary stable support for the counterweight 5. Subsequently, according to the size parameters of the steel plate to be tested, the PLC controller controls the motor 24 to start, driving the bidirectional threaded rod 25 to rotate, causing the two threaded sleeves 26 to drive the U-shaped positioning shells 29 to move towards each other, positioning the steel plate to be tested between the two U-shaped positioning shells 29. The operator then rotates the adjusting screw 31 in sequence, driving the clamping plate 30 to clamp the steel plate in the U-shaped positioning shell 29, completing the fixing process. Upon entering the testing phase, the PLC controller retracts the four first electric push rods 15, pulls out the plug rod 17 to release the temporary fixation, and simultaneously de-energizes and demagnetizes the electromagnet 19. The counterweight 5 then falls freely, vertically impacting the steel to be tested to complete the strength test. After the test is completed, the above process is repeated to reset the device and replace the steel to be tested, then the next testing operation can begin.

[0025] Before fixing the steel plate to be tested, the device provides auxiliary support for the counterweight 5 through four plug-in rods 17, distributing the adsorption load of the electromagnet 19 and reducing the risk of failure due to prolonged high-load operation. If the electromagnet 19 unexpectedly loses its magnetism, the plug-in rods 17 can prevent the counterweight 5 from falling, ensuring operational safety. Furthermore, it ensures that the counterweight 5 maintains a vertical falling trajectory during the drop impact test, eliminating lateral offset interference and improving the safety and accuracy of the strength testing of building steel.

[0026] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A strength testing device for building steel, comprising a base (1), a mounting frame (3) disposed on the upper side of the base (1), a lifting electromagnetic adsorption mechanism (4) disposed within the mounting frame (3), and a counterweight (5) disposed on the lower side of the lifting electromagnetic adsorption mechanism (4), characterized in that, It also includes support positioning mechanisms (7) respectively located on both sides of the counterweight (5), support telescopic insertion mechanisms respectively located at the openings on both sides of the mounting frame (3) and inserted into the two support positioning mechanisms (7), and vertical guide mechanism (6) located between the upper side of the base (1) and the upper side inside the mounting frame (3). The two support positioning mechanisms (7) and the lifting electromagnetic adsorption mechanism (4) are all slidably engaged with the vertical guide mechanism (6).

2. The detection device according to claim 1, characterized in that, The support and positioning mechanism (7) includes a lifting plate (9) on one side of the counterweight (5), a positioning block (11) on one side of the lifting plate (9), and insertion holes (12) on both ends of the positioning block (11).

3. The detection device according to claim 2, characterized in that, The support telescopic plug-in mechanism includes a side plate (18) on one side opening of the mounting frame (3), two first electric push rods (15) arranged at intervals on the outside of the side plate (18), a connecting plate (16) connected to the output end of the first electric push rods (15), and a plug-in rod (17) connected to one side of the connecting plate (16) and cooperating with the corresponding plug hole (12).

4. The detection device according to claim 3, characterized in that, An infrared receiver (14) is provided on one side of one of the positioning blocks (11), and an infrared transmitter (13) is provided on the inner side of the mounting bracket (3) between the two side plates (18).

5. The detection device according to claim 2, characterized in that, The upper side of the lifting plate (9) is provided with a guide hole (10); the vertical guide mechanism (6) includes two guide columns (8) arranged on the upper side of the base (1) and spaced apart. One end of the two guide columns (8) passes through the two corresponding guide holes (10) and is connected to the upper side of the inner side of the mounting frame (3), and the counterweight (5) is located between the two guide columns (8).

6. The detection device according to claim 5, characterized in that, The lifting electromagnetic adsorption mechanism (4) includes a second electric push rod (21) on the upper side of the mounting frame (3), a mounting plate (20) connected to the output end of the second electric push rod (21) and located inside the mounting frame (3), and an electromagnet (19) on the lower side of the mounting plate (20). The lower side of the electromagnet (19) is connected to the upper side of the counterweight (5) by magnetic adsorption. The mounting plate (20) is slidably connected to two guide columns (8).

7. The detection device according to claim 5, characterized in that, The upper side of the base (1) is provided with a steel plate fixing mechanism (2), which is located between two guide columns (8).

8. The detection device according to claim 7, characterized in that, An installation groove (23) is provided on the upper side of the base (1) and between the two guide posts (8). A sliding groove (22) is provided on the lower side of the interior of the installation groove (23). The steel plate fixing mechanism (2) includes a bidirectional threaded rod (25) rotatably connected inside the installation groove (23), a motor (24) located on one side of the base (1) and connected to one end of the bidirectional threaded rod (25), two threaded sleeves (26) threadedly engaged with the bidirectional threaded rod (25) and spaced apart, and a motor (24) connected to the lower side of the threaded sleeves (26). The slide block (27) is slidably engaged with the slide groove (22), the connecting block (28) is connected to the upper side of the two threaded sleeves (26) respectively, the U-shaped positioning shell (29) is connected to the upper side of the connecting block (28), the adjusting screw (31) is threadedly connected to the upper side of the U-shaped positioning shell (29), and the clamping plate (30) is rotatably connected to one end of the adjusting screw (31) and located inside the U-shaped positioning shell (29). The connecting block (28) is located above the base (1), and the two U-shaped positioning shells (29) are arranged symmetrically.

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