Fatigue testing device for slab

Abstract

This utility model relates to the field of plate fatigue testing technology, and more particularly to a plate fatigue testing device, including a test platform, a first mounting base, a second mounting base, a drive assembly, and a sensor. The first mounting base is slidably disposed on the test platform along its length; the second mounting base is slidably disposed on the test platform along its width; the plate disposed on the first mounting base and the plate disposed on the second mounting base can slide in contact; the drive assembly is disposed on the test platform; the sensor is disposed on the first mounting base and is used to detect the fatigue test pressure when the drive assembly drives the two plates to undergo tension and compression for plate fatigue testing. The second mounting base of this utility model can drive the corresponding plate to slide along the width of the test platform to adjust the relative position of the two plates, thereby enabling plate positive pressure testing and plate bias testing, with simple operation and high working efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fatigue testing technology for slabs, and in particular to a fatigue testing device for slabs. Background Technology

[0002] A ramp is a flexible connection used in the connection of coupled locomotives, providing a ground passage for drivers and passengers. Due to the irregular movement of the vehicles over long periods, the ramp experiences repeated stretching and compression, leading to wear, fatigue, and deformation. Furthermore, the ramp springs also experience fatigue, resulting in reduced spring pressure. Therefore, a fatigue test of over 50,000 cycles is necessary to verify the ramp's service life. Currently, there is a lack of general-purpose equipment for this fatigue test.

[0003] Existing technologies mainly employ large displacement test benches, where the crossbeam and windshield are tested together for fatigue. However, large displacement test benches are slow, energy-intensive, have long cycles, are inconvenient for observation and counting, and cannot display the pressure value when the crossbeam moves, thus failing to monitor the fatigue performance of the crossbeam spring.

[0004] Therefore, it is necessary to provide a new fatigue testing device for slabs to solve the above-mentioned technical problems. Utility Model Content

[0005] The main purpose of this invention is to provide a fatigue testing device for a slab, which aims to solve the problem of low working efficiency of existing devices.

[0006] To achieve the above objectives, the present invention proposes a plate fatigue testing device, comprising a test platform, a first mounting base, a second mounting base, a drive assembly, and a sensor. The first mounting base is slidably disposed on the test platform along the length direction of the test platform; the second mounting base is slidably disposed on the test platform along the width direction of the test platform; the plate disposed on the first mounting base and the plate disposed on the second mounting base can slide in contact; the drive assembly is disposed on the test platform; the sensor is disposed on the first mounting base and is used to detect the fatigue test pressure when the drive assembly drives the two plates to stretch and compress for plate fatigue testing.

[0007] Optionally, the first mounting base includes a base plate, side plates, and a connecting plate. The base plate is slidably disposed on the test platform. The base plate is provided with two side plates spaced apart, which cooperate to support the plate. The connecting plate is connected between the two side plates, and the sensor is disposed on the connecting plate.

[0008] Optionally, a cutout is provided at the center of the connecting plate; the sensor is positioned corresponding to the cutout.

[0009] Optionally, the side plate is provided with an installation strip arranged along the length of the test platform, and the installation strip has a plurality of spaced assembly holes, and the plate is detachably connected to each of the assembly holes by fasteners.

[0010] Optionally, the second mounting base has the same structure as the first mounting base.

[0011] Optionally, the driving assembly includes a base, a telescopic driving member, and a hinge plate. The base is disposed on the test platform, the telescopic driving member is disposed on the base along the length direction of the test platform, and the output end of the telescopic driving member is hinged to the hinge plate. The telescopic driving member can abut against the sensor through the hinge plate.

[0012] Optionally, the test platform is provided with a plurality of adjustment hole groups spaced apart along the length direction of the test platform and a plurality of locking holes spaced apart along the width direction of the test platform. The base is detachably connected to any of the adjustment hole groups by fasteners. The plate fatigue testing device also includes a locking component, and the second mounting base can be detachably connected to any of the locking holes by the locking component.

[0013] Optionally, the plate fatigue testing device further includes a control module, which includes a drive solenoid valve, a counting component, and a pressure display screen. The drive solenoid valve is electrically connected to the drive component and can control the start, stop, and magnitude of the force applied by the drive component. The counting component is used to record the cumulative number of plate fatigue tests. The pressure display screen is electrically connected to the sensor and is used to display the real-time detection data of the sensor.

[0014] Optionally, the plate fatigue testing device further includes a transverse track and a vertical track. The transverse track is disposed on the test platform along the length direction of the test platform, and the first mounting base is slidably connected to the test platform through the transverse track. The vertical track is disposed on the test platform along the width direction of the test platform, and the second mounting base is slidably connected to the test platform through the vertical track.

[0015] Optionally, the test platform is further provided with a plurality of uniformly arranged weight-reduction holes; and / or, the test platform is provided with lifting lugs.

[0016] In this invention, the output of the drive assembly can apply forces of varying magnitudes to the first mounting base via the sensor, causing the two plates to stretch and compress for fatigue testing. The second mounting base can also drive the corresponding plate to slide along the width of the test platform to adjust the relative position of the two plates, thus enabling both positive pressure and negative pressure tests on the plates. This design is simple to operate and highly efficient. The sensor is used to detect the pressure during the fatigue test in real time, allowing operators to assess the plate's performance under different pressure conditions and identify potential fatigue phenomena under repeated loads, thereby ensuring its safety and reliability in practical applications. Furthermore, by precisely controlling and recording the forces applied to the plates, operators can comprehensively evaluate the plate's performance, providing important guidance for improving the design and manufacturing process of the plates and enhancing their quality and lifespan. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of the plate fatigue testing device in the embodiment of this utility model; Figure 2 This is a schematic diagram of the structure of the plate fatigue testing device in this embodiment of the present invention during a tensile test under normal pressure. Figure 3 This is a schematic diagram of the structure of the plate fatigue testing device in this embodiment of the present invention during positive pressure compression test; Figure 4 This is a schematic diagram of the structure of the plate fatigue testing device in this embodiment of the present invention during the bias test.

[0019] Explanation of icon numbers: 1. Test platform; 1.1 Adjustment hole group; 1.2 Locking hole; 1.3 Weight reduction hole; 1.4 Lifting lug; 2. First mounting base; 2.1 Base plate; 2.2 Side plate; 2.2.1 Mounting strip; A. Assembly hole; 2.3 Connecting plate; 2.3.1 Hollow part; 3. Second mounting base; 4. Drive assembly; 4.1 Base; 4.2 Telescopic drive component; 4.3 Hinge plate; 5. Sensor; 6. Transition plate; 7. Mounting plate; 8. Horizontal rail; 9. Vertical rail; 10. Locking component.

[0020] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0023] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" can... The invention includes at least one of the features, whether explicitly stated or implicit. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0025] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] This invention proposes a fatigue testing device for a slab, aiming to solve the problem of low testing efficiency in existing devices.

[0027] See Figure 1This embodiment provides a fatigue testing device for a transition plate 6, used to perform fatigue tests on a transition plate 6. The transition plate 6 includes a fixed plate, an elastic component, and a movable plate. The movable plate is slidably disposed on the fixed plate, and the elastic component is connected between the fixed plate and the movable plate. The fatigue testing device for the transition plate 6 includes a test platform 1, a first mounting base 2, a second mounting base 3, a drive component 4, and a sensor 5. The first mounting base 2 is slidably disposed on the test platform 1 along the length direction; the second mounting base 3 is slidably disposed on the test platform 1 along the width direction; a transition plate 6 is provided on both the first mounting base 2 and the second mounting base 3, and the transition plates 6 on the first mounting base 2 and the second mounting base 3 are in slidable contact; the drive component 4 is disposed on the test platform 1, and the sensor 5 is connected to the first mounting base 2. The output end of the drive component 4 can apply different magnitudes of force to the first mounting base 2 through the sensor 5 to drive the two transition plates 6 to be stretched and compressed for fatigue testing of the transition plate 6; the sensor 5 is used to detect the pressure of the transition plate 6 in real time during the fatigue test. The fixed plates of the transition plate 6 are respectively mounted on the first mounting base 2 and the second mounting base 3, and the movable plates of the two transition plates 6 on the first mounting base 2 and the second mounting base 3 slide in contact. In actual operation, the output end of the drive component 4 can apply different magnitudes of force to the first mounting base 2 through the sensor 5 to drive the two transition plates 6 to be stretched and compressed for fatigue testing of the transition plate 6. The second mounting base 3 can drive the corresponding transition plate 6 to slide along the width direction of the test platform 1 to adjust the relative position of the two transition plates 6, thereby realizing the positive pressure test and the bias test of the transition plate 6. The operation is simple and the work efficiency is high. The sensor 5 is used to detect the pressure of the fatigue test of the transition plate 6 in real time, so that the operator can evaluate the performance of the transition plate 6 under different pressure conditions, identify the fatigue phenomenon that may occur when it is subjected to repeated loads, and thus ensure its safety and reliability in practical applications. In addition, by accurately controlling and recording the force applied to the transition plate 6, the operator can comprehensively evaluate the performance of the transition plate 6, which has important guiding significance for improving the design and manufacturing process of the transition plate 6 and improving its quality and service life.

[0028] In this embodiment, the sensor 5 is selected based on the stiffness coefficient and stroke of the transition plate 6. In this embodiment, a pressure sensor 5 with an accuracy of 0.1N is selected. When the second mounting base 3 is directly opposite the first mounting base 2, a tension-compression test, i.e., a positive pressure test, can be performed on the transition plate 6 in the positive direction. Figure 2 and Figure 3 As shown; when the second mounting base 3 is located on both sides of the first mounting base 2, a bias test of the transition plate 6 can be performed, such as... Figure 4 As shown.

[0029] The first mounting base 2 includes a base plate 2.1, side plates 2.2, and a connecting plate 2.3. The base plate 2.1 is slidably mounted on the test platform 1. Two side plates 2.2 are spaced apart on the base plate 2.1, and the two side plates 2.2 cooperate to support the transition plate 6. The connecting plate 2.3 connects the two side plates 2.2, and the sensor 5 is mounted on the connecting plate 2.3. The side plates 2.2 and the connecting plate 2.3 are respectively located at the edges of the base plate 2.1, forming a clearance space with the base plate 2.1 for the installation of the elastic components and movable plate of the transition plate 6. The side plates 2.2 and the connecting plate 2.3 cooperate to support the fixed plate of the transition plate 6, ensuring the structural stability between the transition plate 6 and the first mounting base 2.

[0030] Specifically, a hollow portion 2.3.1 is provided at the center of the connecting plate 2.3; the plate fatigue testing device also includes a mounting plate 7, which is disposed on the connecting plate 2.3 and corresponds to the hollow portion 2.3.1 (specifically, the edge of the mounting plate 7 is fixedly mounted on the connecting plate 2.3 by bolts, and the middle part of the mounting plate 7 corresponds to the hollow portion 2.3.1). The sensor 5 is disposed on the mounting plate 7. This allows the force applied by the driving component 4 to be transmitted to the connecting plate 2.3 through the edge of the mounting plate 7, avoiding excessive force concentration on the connecting plate 2.3 when the driving component 4 applies force.

[0031] In this embodiment, the side plate 2.2 is provided with an installation strip 2.2.1 arranged along the length of the test platform 1. The installation strip 2.2.1 is provided with a plurality of spaced assembly holes A. The plate 6 is detachably connected to each of the assembly holes A by fasteners.

[0032] In this embodiment, the second mounting base 3 has the same structure as the first mounting base 2. This facilitates manufacturing and reduces costs.

[0033] Further, the driving assembly 4 includes a base 4.1, a telescopic driving member 4.2, and a hinge plate 4.3. The base 4.1 is disposed on the test platform 1, and the telescopic driving member 4.2 is disposed on the base 4.1 along the length direction of the test platform 1. The output end of the telescopic driving member 4.2 is hinged to the hinge plate 4.3, and the telescopic driving member 4.2 can abut against the sensor 5 through the hinge plate 4.3. The hinge plate 4.3 is provided with an ear seat, and the output end of the telescopic driving member 4.2 is hinged to the ear seat, and a force is applied to the sensor 5 through the hinge plate 4.3 to ensure the degree of freedom of the output end of the telescopic driving member 4.2, improve structural flexibility, and adapt to assembly errors. In this embodiment, the telescopic driving member 4.2 is a hydraulic cylinder.

[0034] Furthermore, the test platform 1 is provided with a plurality of adjustment hole groups 1.1 spaced apart along the length direction of the test platform 1 and a plurality of locking holes 1.2 spaced apart along the width direction of the test platform 1. The base 4.1 is detachably connected to any of the adjustment hole groups 1.1 by fasteners. The fatigue testing device for the ferrule also includes a locking member 10, and the second mounting seat 3 can be detachably connected to any of the locking holes 1.2 through the locking member 10. The base 4.1 is set on the test platform 1 through any adjustment hole group 1.1 to accommodate telescopic drive members 4.2 of different models and strokes, facilitating fatigue testing under different working conditions. After the second mounting seat 3 moves into place, it is detachably connected to the corresponding locking hole 1.2 on the test platform 1 through the locking member 10 to lock the second mounting seat 3 onto the test platform 1, thereby ensuring the safety and reliability of the fatigue testing process. In this embodiment, the telescopic drive member 4.2 is selected according to the stiffness coefficient and stroke of the ferrule 6. The size of the telescopic drive 4.2 depends on the maximum pressure during the test of the crossbeam 6, and the stroke of the telescopic drive 4.2 depends on the maximum stroke during the test of the crossbeam 6.

[0035] In this embodiment, the fatigue testing device for the slab further includes a control module. The control module includes a drive solenoid valve, a counting component, and a pressure display screen. The drive solenoid valve is electrically connected to the drive component 4 and can control the start, stop, and force magnitude of the drive component 4. The counting component records the cumulative number of fatigue tests on the slab 6. The pressure display screen is electrically connected to the sensor 5 and displays the real-time detection data of the sensor 5. This embodiment also includes a controller, which is electrically connected to the drive solenoid valve, the counting component, and the pressure display screen. The controller can control the extension and retraction speed, start and stop, and force magnitude of the telescopic drive component 4.2 through the drive solenoid valve to adapt to different testing requirements and improve testing efficiency.

[0036] In this embodiment, the fatigue testing device for the transition plates further includes a transverse track 8 and a vertical track 9. The transverse track 8 is arranged on the test platform 1 along its length, and the first mounting base 2 is slidably connected to the test platform 1 via the transverse track 8. The vertical track 9 is arranged on the test platform 1 along its width, and the second mounting base 3 is slidably connected to the test platform 1 via the vertical track 9. During the test, two transition plates 6 are respectively mounted on the first mounting base 2 and the second mounting base 3, and the relative positions of the two transition plates 6 are adjusted by the second mounting base 3 to adapt to the test requirements of both positive and negative pressure conditions. The arrangement of the transverse track 8 and the vertical track 9 enables the sliding movement of the first mounting base 2 and the second mounting base 3 on the test platform 1.

[0037] In this embodiment, the test platform 1 is also provided with a plurality of evenly arranged weight-reducing holes 1.3. The test platform 1 is made of steel plate, and the weight-reducing holes 1.3 on it are beneficial to reduce the overall weight and facilitate transportation.

[0038] In this embodiment, the test platform 1 is equipped with a lifting lug 1.4. The test platform 1 is connected to the hoisting equipment via the lifting lug 1.4 for easy transportation. The above description is only a preferred embodiment of this utility model and does not limit the patent scope of this utility model. All equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A fatigue testing device for a slab, characterized in that, The test platform includes a test platform (1), a first mounting base (2), a second mounting base (3), a drive assembly (4), and a sensor (5). The first mounting base (2) is slidably disposed on the test platform (1) along the length direction of the test platform (1). The second mounting base (3) is slidably disposed on the test platform (1) along the width direction of the test platform (1). The slab (6) disposed on the first mounting base (2) and the slab (6) disposed on the second mounting base (3) can slide in contact. The drive assembly (4) is disposed on the test platform (1). The sensor (5) is disposed on the first mounting base (2) and is used to detect the pressure of the fatigue test when the drive assembly (4) drives the two slabs (6) to stretch and compress to conduct the fatigue test of the slabs (6).

2. The fatigue testing apparatus for the slab as described in claim 1, characterized in that, The first mounting base (2) includes a base plate (2.1), a side plate (2.2) and a connecting plate (2.3). The base plate (2.1) is slidably disposed on the test platform (1). The base plate (2.1) is provided with two side plates (2.2) spaced apart. The two side plates (2.2) cooperate to support the cross plate (6). The connecting plate (2.3) is connected between the two side plates (2.2). The sensor (5) is disposed on the connecting plate (2.3).

3. The fatigue testing apparatus for the slab as described in claim 2, characterized in that, The connecting plate (2.3) has a hollow section (2.3.1) at its center; the sensor (5) is located at the same position as the hollow section (2.3.1).

4. The fatigue testing apparatus for the slab as described in claim 3, characterized in that, The side plate (2.2) is provided with an installation strip (2.2.1) arranged along the length of the test platform (1). The installation strip (2.2.1) is provided with a plurality of spaced assembly holes (A). The plate (6) is detachably connected to each of the assembly holes (A) by fasteners.

5. The fatigue testing apparatus for the slab as described in claim 4, characterized in that, The second mounting base (3) has the same structure as the first mounting base (2).

6. The fatigue testing apparatus for a slab as described in claim 5, characterized in that, The drive assembly (4) includes a base (4.1), a telescopic drive member (4.2), and a hinge plate (4.3). The base (4.1) is disposed on the test platform (1). The telescopic drive member (4.2) is disposed on the base (4.1) along the length direction of the test platform (1), and the output end of the telescopic drive member (4.2) is hinged to the hinge plate (4.3). The telescopic drive member (4.2) can abut against the sensor (5) through the hinge plate (4.3).

7. The fatigue testing apparatus for a slab as described in claim 6, characterized in that, The test platform (1) is provided with a plurality of adjustment hole groups (1.1) spaced apart along the length direction of the test platform (1) and a plurality of locking holes (1.2) spaced apart along the width direction of the test platform (1). The base (4.1) is detachably connected to any of the adjustment hole groups (1.1) by fasteners. The plate fatigue test device also includes a locking member (10). The second mounting base (3) can be detachably connected to any of the locking holes (1.2) through the locking member (10).

8. The plate fatigue testing apparatus as described in any one of claims 1 to 7, characterized in that, The fatigue testing device for the slab also includes a control module, which includes a drive solenoid valve, a counting component, and a pressure display screen. The drive solenoid valve is electrically connected to the drive component (4) and can control the start, stop, and magnitude of the force of the drive component (4). The counting component is used to record the cumulative number of fatigue tests of the slab (6). The pressure display screen is electrically connected to the sensor (5) and is used to display the real-time detection data of the sensor (5).

9. The fatigue testing apparatus for a slab as described in any one of claims 1 to 7, characterized in that, The fatigue testing device for the slab also includes a transverse track (8) and a vertical track (9). The transverse track (8) is arranged on the test platform (1) along the length direction of the test platform (1), and the first mounting seat (2) is slidably connected to the test platform (1) through the transverse track (8). The vertical track (9) is arranged on the test platform (1) along the width direction of the test platform (1), and the second mounting seat (3) is slidably connected to the test platform (1) through the vertical track (9).

10. The fatigue testing apparatus for a slab as described in any one of claims 1 to 7, characterized in that, The test platform (1) is also provided with a plurality of uniformly arranged weight-reducing holes (1.3); and / or, the test platform (1) is provided with lifting lugs (1.4).

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