Straddle-type monorail beam large-tonnage pressure test verification tool

Abstract

The utility model discloses a straddle type monorail beam large tonnage pressure test verification frock, including bearing frame still including a group of hydraulic loading system and a group of pressure monitoring sensor, the bearing frame includes square frame and mobile chassis, the top and the side of square frame all are equipped with corresponding hydraulic loading system and pressure monitoring sensor, and the bottom of square frame is used for fixed rail beam test piece. The rail steel beam test piece of the pressure plate to be verified is placed on the bottom beam and is fixed, the hydraulic loading system is started, and the pressure of the set tonnage is applied to the pressure plate through the hydraulic jack, the pressure monitoring and contrast system synchronously gathers frock pressure sensor data and pressure plate data, the data that is gathered is analyzed, judges whether pressure plate data is accurate, if the error exceeds the allowable range, can adjust the pressure plate or find the problem, can very good adaptation straddle type monorail beam structure, can exert large tonnage pressure test verification.

Description

Technical Field

[0001] This utility model relates to the field of straddle-type single track beam testing technology, and in particular to a large-tonnage pressure testing and verification tooling for straddle-type single track beams. Background Technology

[0002] In straddle-type monorail transit systems, pressure plates installed on the track beams are used to collect pressure data, and the accuracy of this data directly affects the safe operation and condition monitoring of the monorail transit system. Currently, there is a lack of high-tonnage pressure verification fixtures specifically designed for these track beam pressure plates: on the one hand, general-purpose pressure testing devices are difficult to adapt to the structural characteristics of straddle-type monorail beams and cannot accurately simulate the stress environment of the pressure plates during actual operation; on the other hand, existing fixtures cannot effectively and comprehensively verify the accuracy of the pressure plate data collected, which may lead to deviations in subsequent decisions based on the pressure plate data, affecting the safety and reliability of the monorail transit system.

[0003] For example, patent CN203785910U discloses a loading system that uses hydraulic jacks in conjunction with reaction beams for loading box girders; it includes a ground, a pair of columns, a reaction beam, supports, pad beams, and jacks; it cannot be used for large-tonnage pressure testing and verification of rail steel beams and pressure plates on them, and has poor adaptability. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a straddle-type single-track beam high-tonnage pressure testing and verification fixture, which is adapted to apply high-tonnage pressure testing and verification to straddle-type single-track beam structures.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: This straddle-type single track beam high-tonnage pressure testing and verification fixture includes a load-bearing frame, a set of hydraulic loading systems, and a set of pressure monitoring sensors. The load-bearing frame includes a square frame and a movable base. The top and sides of the square frame are equipped with corresponding hydraulic loading systems and pressure monitoring sensors, and the bottom of the square frame is used to fix the track beam specimen.

[0006] Further or preferred: The square frame and the movable base are movably connected.

[0007] The bottom of the mobile base is equipped with a set of rollers.

[0008] The top and sides of the supporting frame are equipped with lifting lugs.

[0009] The hydraulic loading system includes a set of top loading jacks arranged side by side, which are connected to the top of the support frame via pressure monitoring sensors.

[0010] The load-bearing frame includes a top beam and a bottom beam. The two ends of the top beam and the bottom beam are connected by corresponding columns. The columns are equipped with jack supports, and the jack supports are equipped with side-loading jacks.

[0011] It also includes a data comparison system, to which the pressure monitoring sensor is connected.

[0012] The jack support is mounted on one column, and a pad is provided on the inner side of the other column.

[0013] Compared with the prior art, this utility model has the following advantages: The straddle-type single-track beam high-tonnage pressure testing and verification fixture is reasonably designed. The track steel beam specimen to be verified is placed on the bottom beam and fixed. The hydraulic loading system is started, and the set tonnage pressure is applied to the pressure plate through hydraulic jacks. The pressure monitoring and comparison system simultaneously collects data from the fixture's pressure sensor and the pressure plate. The collected data is analyzed to determine whether the pressure plate data is accurate. If the error exceeds the allowable range, the pressure plate can be adjusted or the problem can be found. It is well adapted to the straddle-type single-track beam structure and can be used for high-tonnage pressure testing and verification. Attached Figure Description

[0014] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings: Figure 1 This is a schematic diagram of the load-bearing frame structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the top pressure test of this utility model.

[0016] Figure 3 This is a schematic diagram of the side pressure test of this utility model.

[0017] Figure 4 This is a schematic diagram of another structure of the load-bearing frame of this utility model.

[0018] In the picture: 1. Top beam, 2. Column, 3. Lifting lug, 4. Bottom beam, 5. Roller, 6. Top loading jack, 7. Track beam, 8. Jack support, 9. Side loading jack. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0020] like Figures 1 to 4As shown, the straddle-type single-track beam high-tonnage pressure testing and verification fixture includes a load-bearing frame, a set of hydraulic loading systems, a set of pressure monitoring sensors, and a data comparison system; the set of pressure monitoring sensors is connected to the data comparison system.

[0021] The supporting frame includes a square frame and a movable base, which are movably connected. The bottom of the movable base is equipped with a set of rollers 5 for convenient testing operations.

[0022] The top and sides of the square frame are equipped with corresponding hydraulic loading systems and pressure monitoring sensors, and the bottom of the square frame is used to fix the track beam 7 specimen.

[0023] The load-bearing frame includes a top beam 1 and a bottom beam 4. The two ends of the top beam and the bottom beam are connected by corresponding columns 2 to form a square frame structure. The top and sides of the load-bearing frame are provided with lifting lugs 3.

[0024] The hydraulic loading system includes a set of top loading jacks 6 arranged side by side, which are connected to the top beam of the supporting frame via pressure monitoring sensors.

[0025] A jack support 8 is installed on the column, and a side-loading jack 9 is installed on the jack support. The jack support is installed on one column, and a pad is installed on the inner side of the other column. During the test, one side of the track beam is in contact with the pad, so the test is accurate.

[0026] This utility model features a reasonably designed straddle-type single-track beam high-tonnage pressure testing and verification fixture. The track steel beam specimen to be tested is placed on the bottom beam and fixed. The hydraulic loading system is activated, applying a set tonnage pressure to the pressure plate via hydraulic jacks. The pressure monitoring and comparison system simultaneously collects data from the fixture's pressure sensors and the pressure plate. The collected data is analyzed to determine the accuracy of the pressure plate data; if the error exceeds the allowable range, the pressure plate can be adjusted or the problem identified. This fixture is well-suited for straddle-type single-track beam structures and can withstand high-tonnage pressure tests.

[0027] Preferred specific examples are: Load-bearing frame: It adopts a portal frame structure, including a top beam, columns and a bottom beam; the top beam is used to install the hydraulic loading components, the columns provide stable support, and the bottom beam is used to fix the rail steel beam specimen; the frame is made of high-strength steel to ensure structural stability and no deformation under heavy tonnage pressure; Hydraulic loading system: Hydraulic jacks (corresponding to the pressure plate) are installed below the top beam, allowing for the application of large, vertically downward pressure to the pressure plate on the track steel beam. The hydraulic jacks are connected to a hydraulic pump station, which controls the magnitude, speed, and duration of the pressure application. Pressure monitoring and comparison system: A pressure sensor is installed between the hydraulic jack and the top beam, and data from the pressure plate on the track steel beam is simultaneously collected. The two data are compared to verify the accuracy of the pressure plate data. The system also includes a data acquisition module and an analysis module. The data acquisition module collects data from both the pressure sensor and the pressure plate, while the analysis module processes the two sets of data, calculates the difference, and performs error analysis.

[0028] Top pressure test: The bottom beam of the fixture contacts the beam body, and the contact area between the top beam of the fixture and the jack, as well as the four 4xM24 bolts, withstand a reaction force of 5T; the bottom beam is fixed and constrained, and a gravity of 9.81m / s² is applied. 2 Apply a force of 50,000 N (≈5 T) to the contact area of ​​the jack. Side pressure test: The corner wheel on the bottom beam of the tooling slides in contact with the bottom surface, the left column is in contact with the beam, and the contact area between the right column and the jack, as well as the four 4xM24 bolts, bear a reaction force of 1T (the bolts bear shear force); the caster sliding constraint is applied, the bottom beam fixing constraint is applied, and a gravity of 9.81m / s is applied. 2 A force of 10,000 N (≈1 T) is applied to the contact area of ​​the jack. This utility model has the following advantages: 1. Extreme adaptability (mechanical structure advantage): The customized frame and leveling and centering components, through high-precision machining and assembly, perfectly fit the straddle-type single track beam structure, ensuring accurate pressure loading path, solving the problem of poor adaptability of general devices, and providing a real stress environment for verification; 2. Full working condition coverage (hydraulic system advantage): The servo hydraulic loading system realizes large tonnage (0-5 tons) and wide range of loading rates (0.1-10MPa / s) adjustment, accurately simulating the actual load conditions of monorail transit (including sudden loads), comprehensively verifying the data accuracy of the pressure plate under complex loads, and eliminating safety hazards; 3. Precise verification (sensing and data processing advantage): Dual-source pressure monitoring and real-time quantitative analysis (error calculation, linear fitting) construct a standard pressure reference system, providing a scientific and quantitative basis for judging the accuracy of pressure plate data, solving the problem of single verification and lack of reliable comparison in existing systems, and ensuring the reliability of subsequent data applications.

[0029] The above description is only a preferred embodiment of the present utility model. The above technical features can be arbitrarily combined to form multiple embodiments of the present utility model.

[0030] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A straddle-type single-track beam high-tonnage pressure testing and verification fixture, comprising a load-bearing frame, characterized in that: It also includes a set of hydraulic loading systems and a set of pressure monitoring sensors. The load-bearing frame includes a square frame and a movable base. The top and sides of the square frame are equipped with corresponding hydraulic loading systems and pressure monitoring sensors. The bottom of the square frame is used to fix the track beam specimen.

2. The straddle-type single-track beam large-tonnage pressure testing and verification fixture as described in claim 1, characterized in that: The square frame and the movable base are movably connected.

3. The straddle-type single-track beam large-tonnage pressure testing and verification fixture as described in claim 2, characterized in that: The bottom of the mobile base is equipped with a set of rollers.

4. The straddle-type single-track beam large-tonnage pressure testing and verification fixture as described in claim 1, characterized in that: The top and sides of the supporting frame are equipped with lifting lugs.

5. The straddle-type single-track beam large-tonnage pressure testing and verification fixture as described in claim 1, characterized in that: The hydraulic loading system includes a set of top loading jacks arranged side by side, which are connected to the top of the support frame via pressure monitoring sensors.

6. The straddle-type single-track beam large-tonnage pressure testing and verification fixture as described in claim 1, characterized in that: The load-bearing frame includes a top beam and a bottom beam. The two ends of the top beam and the bottom beam are connected by corresponding columns. The columns are equipped with jack supports, and the jack supports are equipped with side-loading jacks.

7. The straddle-type single-track beam large-tonnage pressure testing and verification fixture as described in claim 1, characterized in that: It also includes a data comparison system, to which the pressure monitoring sensor is connected.

8. The straddle-type single-track beam large-tonnage pressure testing and verification fixture as described in claim 6, characterized in that: The jack support is mounted on one column, and a pad is provided on the inner side of the other column.

Images