Testing device for detecting deflection of cable bridge
By designing a test device including a fixed carrier, a sliding carrier and a weighing mechanism, simulating the cable load and measuring the phase change of the cable tray, the problem of low measurement accuracy of the cable tray in the prior art is solved, and the accurate measurement of the deflection of the cable tray is achieved.
Patent Information
- Application Number
- CN202421694905.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-17
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-07-17
AI Technical Summary
The prior art is difficult to accurately measure the deflection of the cable tray, and the measurement accuracy is low, which cannot meet the testing needs of the cable tray when it bears multiple loads such as cables and personnel.
A test device is designed, including a workbench, a fixed carrier, a sliding carrier, a fixed weighing mechanism and a sliding weighing mechanism. By simulating the cable load, the phase change of the cable tray is measured, thereby realizing the test of the cable tray deflection.
Accurate measurement of cable tray deflection is achieved, measurement accuracy is improved, and the testing needs of cable trays under multiple load conditions are met.
Smart Images
Figure CN222761834U_ABST
Abstract
Description
Technical Field
[0001] The invention discloses a testing device for detecting the deflection of a cable bridge, belonging to the technical field of deflection testing. Background Art
[0002] Deflection refers to the maximum deformation of bending members such as beams and trusses under load. Since deflection was originally a concept in architecture. Cable tray is an important device used to support and protect cables. Its installation quality is directly related to the stable operation and safety of cable lines. According to the relevant provisions in the 11th chapter of the cable tray load in the cable tray industry standard "JB / T 10216-2000", there are also relevant requirements for the normal mechanical load of cable trays.
[0003] From the actual parameters, the requirements for normal mechanical load of cable trays in the cable tray industry standards are equivalent to deflection tests. However, for the cable tray industry, in addition to its own weight, the load of the cable tray should also include the mechanical load of the wires and cables it can withstand. If there are subsequent construction personnel on it, the weight of the personnel must also be included. At the same time, when the cable tray supports the cable, the overall weight of the cable is evenly applied to the cable tray. Therefore, the deflection test scheme in the current existing technology cannot be fully applied to the deflection test of the cable tray.
[0004] Currently, the most common testing method for cable trays is to suspend the cable tray in the air and continuously increase the load on its surface, and measure the deformation of the cable tray using measuring tools. However, this method has low measurement accuracy. Therefore, designing a technical solution for cable tray deflection testing has become an urgent problem to be solved in this field. Summary of the invention
[0005] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, to provide a test device for simulating the load of the cable on the cable tray, to measure the phase change of the cable tray, and thus to test the deflection of the cable tray.
[0006] The technical solution adopted by the utility model to solve its technical problems is: the test device for detecting the deflection of the cable bridge is characterized in that it includes a workbench, a fixed bearing frame is arranged at one end of the workbench surface, a sliding bearing frame opposite to the fixed bearing frame is also slidably arranged on the workbench surface, the two ends of the bridge to be tested are respectively constructed on the surfaces of the fixed bearing frame and the sliding bearing frame, fixed weighing mechanisms are arranged at both ends of the fixed bearing frame, and sliding weighing mechanisms are respectively arranged at both ends of the sliding bearing frame.
[0007] Preferably, the workbench includes a side cabinet and an electrical cabinet separated from each other, the side cabinet and the electrical cabinet are connected via a test table top, a slide rail is arranged on the surface of the electrical cabinet, and a fixed weighing mechanism is fixed on the surface of the side cabinet.
[0008] Preferably, a touch screen is also provided on the surface of the test table.
[0009] Preferably, the sliding weighing mechanism and the fixed weighing mechanism both include a weighing fixed plate, a weighing sensor is arranged on the surface of the weighing fixed plate, and a weighing floating plate is fixed at the weighing end of the surface of the weighing sensor; a load-bearing support is fixed on the surface of the weighing floating plate, the sliding bearing frame is fixed to the surface of the load-bearing support in the sliding weighing mechanism, and the fixed bearing frame is fixed to the surface of the load-bearing support in the fixed weighing mechanism.
[0010] Preferably, the sliding weighing mechanism further comprises a slider fixing plate, the weighing fixing plate in the sliding weighing mechanism is fixed on the surface of the slider fixing plate, and a slider is arranged at the bottom of the slider fixing plate.
[0011] Preferably, the fixed bearing frame and the sliding bearing frame include a bearing rod, a mounting groove is circumferentially opened in the bearing rod, an optical axis is rotatably mounted in the mounting groove, the optical axis in the fixed bearing frame is fixed to the fixed weighing mechanism, and the optical axis in the sliding bearing frame is fixed to the sliding weighing mechanism.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] By using the test device for detecting the deflection of the cable tray, the load of the cable on the cable tray is simulated, the phase change of the cable tray is measured, and thus the deflection test of the cable tray is realized.
[0014] By setting a locking knob, the screw of the locking knob is brought into contact with the surface of the slide rail, thereby locking the sliding weighing mechanism and preventing the sliding weighing mechanism from sliding during the test.
[0015] By setting the limiting mechanism, the position of the inner end of the limiting screw rod in the limiting seat can be adjusted, thereby limiting the sliding positions of the two ends of the sliding weighing mechanism.
[0016] Since the bearing rod is rotatably connected to the optical axis, it is ensured that the bottom surface of the bridge to be tested is always in contact with the surface of the bearing rod during the test. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 A front view of the test device used to detect the deflection of the cable tray.
[0018] Figure 2 Axonometric view of the test device used to detect the deflection of cable tray.
[0019] Figure 3 for Figure 1 Enlarged view of point A in the middle.
[0020] Figure 4 Under load-bearing condition Figure 1 Enlarged view of point A in the middle.
[0021] Among them: 1. fixed bearing frame 2, fixed weighing mechanism 3, side cabinet 4, touch screen 5, test table 6, bridge to be tested 7, slide rail 8, electrical cabinet 9, load car 10, sliding weighing mechanism 11, slide rail table 12, sliding bearing frame 13, bearing rod 14, optical axis 15, bearing support 16, weighing sensor 17, weighing floating plate 18, weighing fixed plate 19, locking knob 20, slider fixing plate 21, slider 22, limit screw 23, limit seat. DETAILED DESCRIPTION
[0022] Figures 1 to 4 It is the best embodiment of the utility model, and the following Figures 1 to 4 The utility model is further described.
[0023] like Figure 1~2 As shown, a test device for detecting the deflection of a cable tray (hereinafter referred to as the test device) includes a workbench, and the workbench includes a spaced side cabinet 3 and an electrical cabinet 8, and a control system of the test device is arranged in the electrical cabinet 8. The side cabinet 3 and the electrical cabinet 8 are connected by a test table 5, and the surface of the electrical cabinet 8 is a slide rail table 11, and the surfaces of the test table 5 and the slide rail table 11 are at the same height. The bottom of the test table 5 is spaced from the ground, and a load vehicle 9 is arranged side by side below the test table 5 for placing the load applied to the surface of the cable tray 6 to be tested during the test. In order to fully simulate the load of the cable on the cable tray, in the test device, the load is realized by a metal plate of the same size as the cable tray 6 to be tested. A touch screen 4 for connecting to the control system is also arranged on one side of the surface of the test table 5.
[0024] A set of fixed weighing mechanisms 2 are arranged at intervals on the surface of the side cabinet 3, and a fixed bearing frame 1 is placed horizontally between the front and rear fixed weighing mechanisms 12. A set of sliding weighing mechanisms 10 are arranged at intervals on the surface of the electrical cabinet 8 near one end of the test table 5, and a sliding bearing frame 12 is placed horizontally between the front and rear sliding weighing mechanisms 10. The two ends of the bridge frame 6 to be tested are placed on the surfaces of the fixed bearing frame 1 and the sliding bearing frame 12, respectively, and the two ends of the bridge frame 6 to be tested are located in the middle of the surfaces of the fixed bearing frame 1 and the sliding bearing frame 12, respectively.
[0025] A slide rail 7 is arranged on the front and rear sides of the slide rail table 11, the two slide rails 7 are parallel to each other, and the two slide rails 7 are arranged along the length direction of the slide rail table 11. The sliding carrier 12 slides along the front and rear slide rails 7 driven by the front and rear sliding weighing mechanisms 10.
[0026] Combination Figure 3Each sliding weighing mechanism 10 includes a slider fixing plate 20, at the bottom of which two sliders 21 slidably connected to the slide rail 7 are fixed side by side, a weighing fixing plate 18 is fixed on the surface of the slider fixing plate 20, a weighing sensor 16 is arranged on the surface of the weighing fixing plate 18, and a weighing floating plate 17 is fixed at the weighing end of the weighing sensor 16. A load-bearing support 15 is fixed on the surface of the weighing floating plate 17, and the front and rear ends of the sliding carrier 12 are respectively fixed on the surfaces of the front and rear sliding weighing mechanisms 10.
[0027] A locking knob 19 is also provided at one end of the slider fixing plate 20. After the screw of the locking knob 19 passes downward through the slider fixing plate 20, it is threadedly connected with the slider fixing plate 20. After the position of the sliding weighing mechanism 10 is determined, the locking knob 19 is rotated to make the screw of the locking knob 19 contact the surface of the slide rail 7, thereby locking the sliding weighing mechanism 10 to prevent the sliding weighing mechanism 10 from sliding during the test. The fixed weighing mechanism 2 is composed of a weighing fixing plate 18, a weighing floating plate 17, a weighing sensor 16 and a load-bearing support 15, and is realized in the same connection mode as the sliding weighing mechanism 10, which will not be described again.
[0028] The two ends of the slide rail 7 are also provided with a limit mechanism of the sliding weighing mechanism 10, which includes a limit seat 23 fixed at both ends of the slide rail 7, and a limit screw 22 passing through the limit seat 23 horizontally, and the limit screw 22 is threadedly connected with the limit seat 23. By rotating the limit screw 22, the position of the inner end of the limit screw 22 in the limit seat 23 is adjusted, thereby limiting the sliding position of the two ends of the sliding weighing mechanism 10.
[0029] The fixed carrier frame 1 and the sliding carrier frame 12 have the same structure, including an optical axis 14. The two ends of the optical axis 14 in the fixed carrier frame 1 are respectively fixed to the surfaces of the front and rear two load-bearing supports 15 in the fixed weighing mechanism 2, and the two ends of the optical axis 14 in the sliding carrier frame 12 are respectively fixed to the surfaces of the front and rear two load-bearing supports 15 in the sliding weighing mechanism 10. A bearing rod 13 is sleeved on the outside of the optical axis 14, and a slot with an inner diameter equal to the outer diameter of the optical axis 14 is axially opened inside the bearing rod 13, and the optical axis 14 is rotatably mounted inside the bearing rod 13 through the slot.
[0030] The specific working process and working principle are as follows:
[0031] Before the test, first, according to the length of the bridge frame 6 to be tested, the sliding weighing mechanism 10 is moved along the slide rail 7 to move the sliding carrier 12 to a preset position, and then the positions of the front and rear sliding weighing mechanisms 10 are locked respectively by turning the locking knobs 19 on the front and rear slider fixing plates 20. At the same time, the position of the sliding carrier 12, that is, the distance between the sliding carrier 12 and the fixed carrier 1, is determined.
[0032] A set of commonly available universal dial indicators (not shown) is also provided on the surface of the test table 5, and the data interface in the dial indicators is connected to the control system. Then, the two ends of the bridge frame 6 to be tested are placed on the surface of the sliding support frame 12 and the fixed support frame 1, respectively, so that the bridge frame 6 to be tested is suspended in the air, and then, by adjusting the angle of the bracket in the universal dial indicator, the measuring heads of the front and rear dial indicators are respectively in contact with the front and rear sides of the middle of the bridge frame 6 to be tested.
[0033] Then, load plates of corresponding length are taken out from the load vehicle 9 and placed one by one on the surface of the bridge frame 6 to be tested. As the load plates are continuously placed, the middle part of the bridge frame 6 to be tested gradually deforms. Since the load rod 13 is rotatably connected to the optical axis 14, it is ensured that the bottom surface of the bridge frame 6 to be tested is always in contact with the surface of the load rod 13 during the test. Figure 4 Status shown.
[0034] During the test, the weighing sensors 16 in the sliding weighing mechanism 10 and the fixed weighing mechanism 2 respectively measure the weight they carry and send the measured data to the control system respectively. At the same time, the dial indicator sends the measured data to the control system respectively, and the deformation data of the front and rear sides of the bridge frame 6 to be tested are uploaded respectively, and recorded by the control system and displayed on the touch screen 4. By comparing with the parameters required in the industry standards, it is determined whether the bridge frame 6 to be tested meets the requirements of the industry standards.
[0035] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.
Claims
1. A testing device for detecting the deflection of a cable tray, characterized in that: The invention comprises a workbench, a fixed bearing frame (1) is arranged at one end of the workbench surface, a sliding bearing frame (12) is also slidably arranged on the workbench surface and is opposite to the fixed bearing frame (1), two ends of a bridge frame (6) to be measured are respectively mounted on the surfaces of the fixed bearing frame (1) and the sliding bearing frame (12), fixed weighing mechanisms (2) are arranged at both ends of the fixed bearing frame (1), and sliding weighing mechanisms (10) are respectively arranged at both ends of the sliding bearing frame (12).
2. The testing device for detecting the deflection of a cable tray according to claim 1, characterized in that: The workbench comprises a spaced side cabinet (3) and an electrical cabinet (8); the side cabinet (3) and the electrical cabinet (8) are connected via a test table top (5); a slide rail (7) is arranged on the surface of the electrical cabinet (8); and a fixed weighing mechanism (2) is fixed on the surface of the side cabinet (3).
3. The testing device for detecting the deflection of a cable tray according to claim 2, characterized in that: A touch screen (4) is also provided on the surface of the test table (5).
4. The testing device for detecting the deflection of a cable tray according to claim 1, characterized in that: The sliding weighing mechanism (10) and the fixed weighing mechanism (2) both comprise a weighing fixed plate (18), a weighing sensor (16) being arranged on the surface of the weighing fixed plate (18), and a weighing floating plate (17) being fixed at the weighing end of the surface of the weighing sensor (16); a load-bearing support (15) being fixed on the surface of the weighing floating plate (17), a sliding bearing frame (12) being fixed on the surface of the load-bearing support (15) in the sliding weighing mechanism (10), and a fixed bearing frame (1) being fixed on the surface of the load-bearing support (15) in the fixed weighing mechanism (2).
5. The testing device for detecting the deflection of a cable tray according to claim 4, characterized in that: The sliding weighing mechanism (10) further comprises a slider fixing plate (20). The weighing fixing plate (18) in the sliding weighing mechanism (10) is fixed on the surface of the slider fixing plate (20), and a slider (21) is arranged at the bottom of the slider fixing plate (20).
6. The testing device for detecting the deflection of a cable tray according to claim 1, characterized in that: The fixed bearing frame (1) and the sliding bearing frame (12) comprise a bearing rod (13), a clamping groove is circumferentially provided in the bearing rod (13), an optical axis (14) is rotatably clamped in the clamping groove, the optical axis (14) in the fixed bearing frame (1) is fixed to the fixed weighing mechanism (2), and the optical axis (14) in the sliding bearing frame (12) is fixed to the sliding weighing mechanism (10).