U-shaped steel performance inspection device

Abstract

The utility model discloses a U-shaped steel performance testing device which is characterized in that the U-shaped steel performance testing device comprises a rack, a driving part is arranged on the rack, and the output end of the driving part is connected with a loading beam used for fixing U-shaped steel to be tested; the two sides of the U-shaped steel to be detected are respectively connected with the loading beam and the rack through mounting plates; a guide support for limiting and guiding is arranged between the loading beam and the rack; the driving part drives the loading beam to slide along the guide support to apply force to the U-shaped steel to be detected; a limiting support used for preventing the loading beam from shifting in the inspection process is arranged between the loading beam and the rack. The U-shaped steel performance detection loading device meets the requirement of U-shaped steel performance detection load application, meets the effectiveness of the U-shaped steel performance detection loading direction, can adapt to installation of U-shaped steel test pieces with different sizes, and meets the requirements of transverse bridge direction and longitudinal bridge direction performance detection of the U-shaped steel test pieces.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge supports, and in particular relates to a U-shaped steel performance testing device. Background Art

[0002] U-shaped steel is an important component of anti-fall beam bearings. Its performance has a great impact on the overall seismic resistance, seismic displacement and anti-fall beam capacity of the bearing. As the U-shaped anti-fall beam device is increasingly used in the field of railway bridge seismic resistance and anti-fall, the performance test of U-shaped steel is becoming more and more important. The existing detection device cannot well match the size and force direction of U-shaped steel, and the device installation method is single and cannot adapt to site requirements. Therefore, a U-shaped steel inspection equipment with flexible installation method, wide matching range and adjustable loading direction is urgently needed to be developed. Utility Model Content

[0003] In view of the problems existing in the background technology, the purpose of the utility model is to provide a U-shaped steel performance testing device which can adapt to different sizes, has flexible installation and adjustable loading direction.

[0004] In order to achieve the above-mentioned purpose, the U-shaped steel performance testing device designed by the utility model comprises a frame, a driving part is provided on the frame, and the output end of the driving part is connected to a loading beam for fixing the U-shaped steel to be tested; the two sides of the U-shaped steel to be tested are respectively connected to the loading beam and the frame through a mounting plate;

[0005] A guide support for position limiting guidance is provided between the loading beam and the frame; the driving unit drives the loading beam to slide along the guide support to apply force to the U-shaped steel to be inspected;

[0006] A limiting support is provided between the loading beam and the frame to prevent the loading beam from deviating during the inspection process.

[0007] Preferably, the guide support comprises a slide rail fixedly connected to the frame and a lateral support fixedly connected to the loading beam; one end of the lateral support is fixedly connected to the loading beam, and the other end moves relative to the slide rail.

[0008] Further preferably, the lateral support end is provided with a first roller, and the first roller rolls in the slide rail.

[0009] Preferably, the position-limiting support comprises a main body fixedly connected to the frame, the main body is provided with a second roller, and the second roller can be in rolling contact with the loading beam.

[0010] Preferably, a triangular mounting seat is provided between the mounting plate and the frame; the triangular mounting seat comprises a vertical plate connected to the frame, a horizontal plate connected to the mounting plate, a reinforcing plate is provided between the vertical plate and the horizontal plate; the vertical plate is provided with a waist-shaped hole. Thus, the relative position between the mounting plate and the frame can be adjusted through the waist-shaped hole, so as to adapt to U-shaped steels of different sizes.

[0011] Preferably, a load sensor is provided between the loading beam and the driving part.

[0012] The beneficial effects of the utility model are:

[0013] 1) It adopts hydraulic drive, and the loading mode can be selected as load control loading and displacement control loading, which fully meets the requirements of U-shaped steel performance test load application;

[0014] 2) The U-shaped test frame of the main structure is equipped with a slide rail to cooperate with the loading beam, and the loading beam is vertically limited and horizontally guided, which fully meets the effectiveness of the loading direction of the U-shaped steel performance test;

[0015] 3) A limit support with rollers is set at the head of the U-shaped test frame of the main structure, which effectively limits the horizontal displacement of the loading beam, especially when conducting performance inspection of a single U-shaped steel specimen, while not affecting the horizontal expansion and contraction of the loading beam, fully ensuring the effectiveness of the loading direction of the U-shaped steel performance inspection.

[0016] 4) The head triangular mounting seat can move along the head end surface of the U-shaped test frame, fully meeting the installation requirements of U-shaped steel test pieces of different sizes;

[0017] 5) The installation direction of the mounting plate can be adjusted, which fully meets the requirements of the performance testing of the U-shaped steel test piece in the transverse and longitudinal directions of the bridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of a U-shaped test frame of the present invention;

[0020] Figure 3 It is a structural schematic diagram of a long-stroke oil cylinder of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the loading beam of the present invention;

[0022] Figure 5 This is a schematic diagram of the mounting plate of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the triangular mounting seat of the present invention. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the technical solution (including the preferred technical solution) of the present utility model by means of the accompanying drawings and by listing some optional embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, not all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present utility model.

[0025] Conventional U-shaped steel inspection standards stipulate that U-shaped steel performance inspection includes anti-drop beam force and design displacement inspection, and fatigue performance inspection. Under the control of the hydraulic system, the cylinder of this device drives the piston rod to drive the loading beam and one side of the U-shaped steel to move. It can provide a maximum active load of 2000kN, a relative displacement of ±325mm, and a peak speed of 1.5m / s, which basically meets all U-shaped steel performance inspection requirements of the standard.

[0026] The device of the utility model can be installed in a "lying" style (the surface where the two slide rails are located is parallel to the ground) or a "side-standing" style (the surface where the two slide rails are located is perpendicular to the ground) depending on the installation space on site. The attached drawings are all "lying" installations.

[0027] like Figures 1 to 6 As shown, the U-shaped steel performance testing device designed by the utility model includes a frame 1, on which a driving part 2 is provided, and the output end of the driving part 2 is connected to a loading beam 6 for fixing the U-shaped steel 10 to be tested; the two sides of the U-shaped steel 10 to be tested are respectively connected to the loading beam 6 and the frame 1 through mounting plates 9; a guide support for limiting guiding is provided between the loading beam 6 and the frame 1; the driving part 2 drives the loading beam 6 to slide along the guide support to apply force to the U-shaped steel 10 to be tested; a limiting support 7 is provided between the loading beam 6 and the frame 1 for preventing the loading beam 6 from deviating during the inspection process.

[0028] In some optional embodiments of the present invention, the driving part 2 adopts a long-stroke cylinder.

[0029] like Figure 3 As shown, the long-stroke oil cylinder 2 includes a piston 12, a front cover 13 and a rear cover 14. The piston rod 3 runs through the entire oil cylinder in the center. The piston rod 3 is connected to the loading beam 6 as the output end of the driving unit 2. The tail of the long-stroke oil cylinder is connected to the hydraulic control system. The hydraulic control system can adopt two modes of load control loading and displacement control loading to meet the different requirements of U-shaped steel performance inspection. When the test starts, the oil volume in the oil chambers on both sides of the piston 12 in the oil cylinder changes, driving the piston rod 3 to expand and contract along the horizontal axis, driving the loading beam to move, so as to realize the loading of the U-shaped steel test piece.

[0030] In some optional embodiments of the present invention, the guide support includes a slide rail 4 fixedly connected to the frame 1 and a lateral support 5 fixedly connected to the loading beam 6; one end of the lateral support 5 is fixedly connected to the loading beam 6, and the other end moves relative to the slide rail 4. In this way, an effective force direction of the U-shaped steel 10 to be inspected is achieved.

[0031] Preferably, the end of the lateral support 5 is provided with a first roller 16, and the first roller 16 rolls in the slide rail 4. The roller is matched with the slide rails 4 on both sides of the U-shaped test frame 1 to achieve horizontal extension and retraction of the loading beam 6.

[0032] The lateral support 5 matches the slide rail 4 on the inner side of the frame 1 to provide horizontal guidance for the loading beam 6, so as to ensure that the loading beam 6 can move smoothly along the predetermined path during the loading process to avoid deviation. The lateral support can reduce the vibration or swing of the loading beam during the loading process, thereby improving the stability and repeatability of the test. The first roller 16 at the end of the lateral support can evenly distribute the load, reduce the local stress concentration on the loading beam 6, and extend the service life of the equipment.

[0033] Preferably, a travel limit is provided on the slide rail 4, so that during the test, if an abnormal situation occurs, the lateral support can prevent the sudden movement of the loading beam, thereby protecting the safety of the operator and the equipment.

[0034] In some optional embodiments of the present invention, the position-limiting support 7 includes a main body fixedly connected to the frame 1 , and the main body is provided with a second roller, and the second roller can be in rolling contact with the loading beam.

[0035] The limit support 7 can prevent the loading beam 6 from moving in the lateral direction (i.e., perpendicular to the loading direction) to ensure that the loading beam applies force along a predetermined straight path. By limiting the horizontal movement of the loading beam 6, the limit support 7 helps to ensure the loading accuracy during the test and avoid test errors caused by beam offset. The limit support 7 can improve the structural stability of the entire test device and reduce vibration or swing that may occur during the loading process. During the test, if an abnormal situation occurs, the limit support 7 can prevent the sudden lateral movement of the loading beam, thereby protecting the safety of the operator, equipment and U-shaped steel test piece.

[0036] Meanwhile, the U-shaped steel 10 to be inspected of the utility model can be installed in pairs or individually. When installed on one side, the limit support 7 may also provide additional support points to help disperse the load, reduce the pressure on other components, and also improve the loading accuracy.

[0037] In some optional embodiments of the utility model, a triangular mounting seat 8 is provided between the mounting plate 9 and the frame 1; the triangular mounting seat 8 includes a vertical plate 8.1 connected to the frame 1, a horizontal plate 8.2 connected to the mounting plate 9, a reinforcing plate is provided between the vertical plate 8.1 and the horizontal plate 8.2; the vertical plate 8.1 is provided with a waist-shaped hole 19. In this way, the relative position between the mounting plate 9 and the frame 1 is adjusted through the waist-shaped hole 19, so as to adapt to U-shaped steels of different sizes.

[0038] The triangular mounting seat 8 can slide along the end surface of the U-shaped test frame through the oval hole to install U-shaped steel test pieces 10 of different sizes. The vertical plate 8.1 of the triangular mounting seat 8 has symmetrical oval holes 19, and the horizontal plate 8.2 has threaded mounting holes 20 connected to the mounting plate 9.

[0039] The mounting plate 9 is divided into a left mounting plate 9 - 1 and a right mounting plate 9 - 2 , and the mounting plates are symmetrically provided with countersunk mounting holes 17 and five U-shaped steel mounting holes 18 of different sizes.

[0040] The mounting plate 9 can be installed along the loading direction or rotated 90 degrees. That is, the mounting plate 9 can be installed along the symmetry axis parallel to the loading direction or vertically along the symmetry axis to the loading line, so as to realize the transverse and longitudinal performance testing of the U-shaped steel test piece.

[0041] In some optional embodiments of the present invention, a load sensor 15 is provided between the loading beam 6 and the driving part 2 .

[0042] In some optional embodiments of the utility model, a vertical support 11 is provided below the U-shaped test frame 1, a slide rail 4 is provided inside to horizontally guide and vertically limit the loading beam 6, and a lateral support 5 with rollers is provided at the head to horizontally limit the loading beam 6. The vertical support 11 is fixed to the ground by chemical anchor bolts.

[0043] In this example, U-shaped steel test pieces with appropriate width are used in pairs to test the transverse performance of the bridge. Before installation, the U-shaped steel installation hole size and installation width must be accurately checked, appropriate bolts must be used, and the installation width must be adjusted by moving the triangular mounting seat, and the U-shaped steel must be installed on the mounting plate.

[0044] It is easy for those skilled in the art to understand that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, combinations, replacements, improvements, etc. made within the spirit and principles of the present invention are included in the protection scope of the present invention.

Claims

1. A U-shaped steel performance testing device, characterized in that: The machine comprises a frame, a driving part is arranged on the frame, and an output end of the driving part is connected to a loading beam for fixing the U-shaped steel to be inspected; two sides of the U-shaped steel to be inspected are respectively connected to the loading beam and the frame through mounting plates; A guide support for position limiting guidance is provided between the loading beam and the frame; the driving unit drives the loading beam to slide along the guide support to apply force to the U-shaped steel to be inspected; A limiting support is provided between the loading beam and the frame to prevent the loading beam from deviating during the inspection process.

2. The U-shaped steel performance testing device according to claim 1 is characterized in that: The guide support comprises a slide rail fixedly connected to the frame and a lateral support fixedly connected to the loading beam; one end of the lateral support is fixedly connected to the loading beam, and the other end moves relative to the slide rail.

3. The U-shaped steel performance testing device according to claim 2 is characterized in that: The lateral support end is provided with a first roller, and the first roller rolls in the slide rail.

4. The U-shaped steel performance testing device according to claim 1 is characterized in that: The position-limiting support comprises a main body fixedly connected to the frame, the main body is provided with a second roller, and the second roller can be in rolling contact with the loading beam.

5. The U-shaped steel performance testing device according to claim 1 is characterized in that: A triangular mounting seat is arranged between the mounting plate and the frame; the triangular mounting seat comprises a vertical plate connected to the frame and a horizontal plate connected to the mounting plate, a reinforcing plate is arranged between the vertical plate and the horizontal plate; the vertical plate is provided with a waist-round hole.

6. The U-shaped steel performance testing device according to claim 1, characterized in that: A load sensor is provided between the loading beam and the driving part.

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