Stress detection device for bridge cable

Abstract

The utility model relates to the technical field of inhaul cable detection equipment, in particular to a stress detection device of a bridge inhaul cable, which comprises a detection platform, a detection device and a protection device are arranged on the platform surface of the detection platform, the detection device comprises a dynamometer and a clamping component, the dynamometer is connected above the clamping component in a sliding manner through a driving device, and the clamping component is connected with the protection device. The clamping component and the clamping component are respectively fixed at two ends of the inhaul cable; wherein the protection device is arranged on the periphery of the detection device and used for protection when the inhaul cable is broken or slips; the protection device comprises a pair of first protection plates and a pair of second protection plates, the pair of first protection plates are arranged at the top of the detection table through fixing assemblies, and the second protection plates are further arranged between the pair of first protection plates. And secondly, the protective plate can be quickly replaced after being damaged, and the protective plate can be quickly replaced after the protective plate is damaged, so that the stay cable is prevented from being broken due to overlarge stress during detection, or personnel and equipment are prevented from being damaged under the condition of slipping off from the clamping part.

Description

Technical Field

[0001] This utility model relates to the technical field of cable testing equipment, and in particular to a stress testing device for bridge cables. Background Technology

[0002] Bridge cables are high-strength steel cables or chains used to bear the weight of the bridge itself and the loads of vehicles traveling on the bridge. Cables mainly bear tension, and they effectively transfer the weight and dynamic load of the bridge to the supporting structure of the bridge. By adjusting the tension of the cables, the stability and strength of the bridge structure can be maintained.

[0003] Stress testing of cables ensures that safety requirements are met during design and use. For example, Chinese Patent Publication No. CN109489968A discloses a cable testing device, including a platform, a tensioner, a first distance measuring instrument, a tension elastic element, a second distance measuring instrument, a force measuring instrument, and a directional wheel. The first distance measuring instrument includes a first measuring rod connected between the first end of the cable and the tensioner, and a first measuring seat that slides along the extension direction of the first end of the cable. At least one of the first measuring rod and the first measuring seat has a length scale. The second distance measuring instrument includes a second measuring rod and a second measuring seat, at least one of the second measuring rod and the second measuring seat also having a length scale. This cable testing device effectively solves the problem of inconvenient cable testing.

[0004] In practice, the two ends of the cable are connected to a tension meter and a force gauge, respectively. The tension is detected by moving the cable. However, considering that the cable may break if the tension is too great, there are no protective measures for the observers. The observers or the testing equipment may be injured or damaged due to the broken cable being thrown out. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the lack of measures to protect observers or equipment, which can easily lead to cable breakage and injury or equipment damage. Therefore, this invention proposes a stress detection device for bridge cables.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a stress testing device for bridge cables, including a testing platform. A testing device and a protective device are set on the platform. The testing device includes a force measuring instrument and a clamping component. The force measuring instrument is slidably connected above the clamping component through a driving device, and the force measuring instrument and the clamping component are respectively fixed to both ends of the cable.

[0008] The protective device is installed around the detection device to provide protection in case the cable breaks or slips.

[0009] The protective device includes a pair of first protective plates and a second protective plate. The pair of first protective plates are fixed on the top of the testing station by a fixing component, and a second protective plate is provided between the pair of first protective plates.

[0010] Furthermore, a pair of fixing frames are fixedly connected to the top of the testing platform on both sides of the clamping component. The pair of fixing frames are arranged in parallel, and the first protective plate is provided between them through an installation gap.

[0011] Furthermore, the fixing component includes a mounting frame, and the top of the testing platform is fixedly connected to one end of the fixing frame. The mounting frame has an unlocking component and a connecting rod on its side. The connecting rod is slidably connected to the mounting frame and rotates eccentrically with the unlocking component. The unlocking component can abut against the mounting frame.

[0012] Furthermore, the free end of the connecting rod is slidably connected to the bottom of the first protective plate, and its free end extends to the periphery of the first protective plate. A protrusion is also provided at the free end of the connecting rod.

[0013] Furthermore, the fixing component also includes a baffle, the midpoint of which connects to the side to form a clearance groove, and it is inserted into the connecting rod through the clearance groove. The two sides of the baffle respectively abut against the first protective plate and the protrusion.

[0014] Furthermore, guide grooves are provided on opposite sides of the fixing frame located on both sides of the detection device, and the second protective plate is slidably connected in the guide grooves.

[0015] The present invention provides a stress testing device for bridge cables, which has the following advantages: The device is equipped with a protective plate on its periphery. The protective plate can be quickly disassembled and replaced with the testing platform through a fixing component. Firstly, the protective plate protects the observers or equipment, preventing the cable from breaking due to excessive stress or slipping from the clamping components during testing, thus preventing injury to personnel and equipment. Secondly, the protective plate can be quickly replaced after damage, avoiding affecting the normal testing of the cable. The device has a simple structure, is easy to operate, and is highly practical. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the protective device of this utility model;

[0018] Figure 3 for Figure 2 A magnified structural diagram of area A;

[0019] Figure 4 for Figure 2 A schematic diagram of the enlarged structure of region B;

[0020] Figure 5 This is an enlarged view of the guide groove structure of this utility model.

[0021] In the diagram: 1. Testing table; 11. Fixing frame; 2. Testing device; 21. Force gauge; 22. Clamping component; 3. Protective device; 31. First protective plate; 32. Second protective plate; 33. Guide groove; 4. Driving device; 5. Fixing component; 51. Mounting frame; 52. Unlocking component; 53. Connecting rod; 54. Baffle; 55. Protrusion. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-5 A stress testing device for bridge cables includes a testing platform 1. A testing device 2 and a protective device 3 are provided on the platform of the testing platform 1. The testing device 2 includes a force measuring instrument 21 and a clamping component 22. The force measuring instrument 21 is slidably connected above the clamping component 22 through a driving device 4, and the force measuring instrument 21 and the clamping component 22 are respectively fixed to both ends of the cable.

[0024] The protective device 3 is installed around the detection device 2 to provide protection when the cable breaks or slips.

[0025] The protective device 3 includes a pair of first protective plates 31 and a second protective plate 32. The pair of first protective plates 31 are set on the top of the testing table 1 by a fixing component 5, and the second protective plate 32 is also provided between the pair of first protective plates 31.

[0026] It should be added that the driving device 4 includes a bracket, which is fixed to the top of the testing platform 1. A movable plate is slidably connected to the side of the bracket via a slide rail. The force gauge 21 is fixed to the movable plate. A motor is provided at the bottom of the testing platform 1. A screw is fixedly connected to the shaft end of the motor, and the screw is threadedly connected to the movable plate.

[0027] The clamping component 22 includes an electric gripper, which works with the force measuring instrument 21 to clamp both ends of the cable and performs force testing by driving the force measuring instrument 21 to move.

[0028] Furthermore, a pair of fixing frames 11 are fixedly connected to the top of the testing table 1 on both sides of the clamping component 22. The pair of fixing frames 11 are arranged in parallel, and the first protective plate 31 is provided between them through an installation gap.

[0029] Specifically, the fixing frame 11 has an L-shaped structure. The fixing frame 11 is threadedly connected to the top of the testing table 1. A pair of fixing frames 11 are arranged opposite each other and accommodate the first protective plate 31 by leaving an installation gap. The fixing frames 11 on both sides also abut against the sides of the first protective plate 31 to play a limiting role.

[0030] Furthermore, the fixing component 5 includes a mounting frame 51. The top of the testing platform 1 is fixedly connected to the mounting frame 51 at one end of the fixing frame 11. The mounting frame 51 has an unlocking component 52 and a connecting rod 53 on its side. The connecting rod 53 is slidably connected to the mounting frame 51 and rotates eccentrically with the unlocking component 52. The unlocking component 52 can abut against the mounting frame 51.

[0031] More specifically, the free end of the connecting rod 53 is slidably connected to the bottom of the first protective plate 31, and its free end extends to the periphery of the first protective plate 31. A protrusion 55 is also provided at the free end of the connecting rod 53.

[0032] In general, the fixing component 5 also includes a baffle 54, the midpoint of which connects to the side to form a relief groove, and it is inserted into the connecting rod 53 through the relief groove. The two sides of the baffle 54 abut against the first protective plate 31 and the protrusion 55, respectively.

[0033] It is worth mentioning that the unlocking component 52 is located on the side close to the driving device 4, while the first protective plate 31 is pulled out to the side away from the driving device 4 for disassembly and assembly.

[0034] In specific operation, the first protective plate 31 is slidably connected to the connecting rod 53 and is located between a pair of fixed frames 11. The baffle 54 is inserted into the connecting rod 53 through the relief groove. Then, the unlocking part 52 is rotated. Because the unlocking part 52 and the connecting rod 53 rotate eccentrically, the connecting rod 53 is pulled, causing the connecting rod 53 to move towards the unlocking part 52. In this way, the first protective plate 31 is fixed by the mounting frame 51 and the baffle 54 pressing against both sides of the first protective plate 31 in conjunction with a pair of fixed frames 11.

[0035] It should be noted that the first protective plate 31 is slidably connected to the connecting rod 53 through a through hole, the diameter of the protrusion 55 is smaller than the through hole, while the diameter of the baffle 54 is larger than the through hole, and the opening of the clearance groove is smaller than the diameter of the protrusion 55.

[0036] Finally, guide grooves 33 are provided on opposite sides of the fixing frame 11 located on both sides of the detection device 2, and the second protective plate 32 is slidably connected in the guide grooves 33.

[0037] Specifically, with the fixing brackets 11 on both sides fixed, the second protective plate 32 is inserted and fixed through the guide groove 33. The second protective plate 32 and the pair of first protective plates 31 are surrounded by a notch on three sides, and the notch is close to the drive device 4.

[0038] Of course, in order to better fix the second protective plate 32, a positioning glass bead can also be fixedly connected to the side of the fixing frame 11, and the telescopic end of the positioning glass bead engages with the slot on the side of the second protective plate 32.

[0039] Working method: During operation, the two ends of the cable are fixedly connected to the force measuring instrument 21 and the clamping component 22 respectively. Then, the force measuring instrument 21 is driven to rise continuously through the drive device 4, and the force condition of the cable is detected by measuring the values.

[0040] Before testing, a protective device 3 needs to be installed around the testing device 2 to prevent the cable from breaking or slipping during testing. Specifically, a pair of first protective plates 31 are placed inside a pair of fixed frames 11 on both sides, and the first protective plates 31 are inserted through the through holes and connected to the connecting rod 53.

[0041] After installation, the baffle 54 is inserted into the connecting rod 53 through the clearance groove. Then, the unlocking part 52 is rotated. The reason for the eccentric rotation of the unlocking part 52 and the connecting rod 53 is that the connecting rod 53 is pulled, causing the connecting rod 53 to move towards the unlocking part 52. In this way, the first protective plate 31 is fixed by the mounting bracket 51 and the baffle 54 pressing against both sides of the first protective plate 31, in conjunction with a pair of fixing brackets 11.

[0042] Finally, by inserting the second protective plate 32 into the guide grooves 33 on both sides, the observers and equipment can be protected.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A stress testing device for bridge cables, comprising a testing platform (1), characterized in that: A testing device (2) and a protective device (3) are provided on the table surface of the testing platform (1). The testing device (2) includes a force measuring instrument (21) and a clamping component (22). The force measuring instrument (21) is slidably connected above the clamping component (22) through a driving device (4), and it and the clamping component (22) fix the two ends of the cable respectively. The protective device (3) is installed around the detection device (2) to provide protection when the cable breaks or slips. The protective device (3) includes a pair of first protective plates (31) and a second protective plate (32). The pair of first protective plates (31) are set on the top of the testing table (1) by a fixing component (5), and the second protective plate (32) is also provided between the pair of first protective plates (31).

2. The stress detection device for bridge cables according to claim 1, characterized in that: The top of the testing platform (1) is fixedly connected to a pair of fixing frames (11) on both sides of the clamping component (22). The pair of fixing frames (11) are arranged in parallel, and the first protective plate (31) is provided between them through an installation gap.

3. The stress detection device for bridge cables according to claim 2, characterized in that: The fixing component (5) includes a mounting bracket (51). The top of the testing platform (1) is fixedly connected to one end of the fixing bracket (11) with the mounting bracket (51). The side of the mounting bracket (51) is provided with an unlocking component (52) and a connecting rod (53). The connecting rod (53) is slidably connected to the mounting bracket (51) and rotates eccentrically with the unlocking component (52). The unlocking component (52) can abut against the mounting bracket (51).

4. The stress detection device for bridge cables according to claim 3, characterized in that: The free end of the connecting rod (53) is slidably connected to the bottom of the first protective plate (31), and its free end extends to the periphery of the first protective plate (31). A protrusion (55) is also provided at the free end of the connecting rod (53).

5. The stress detection device for bridge cables according to claim 4, characterized in that: The fixing component (5) also includes a baffle (54), the midpoint of which connects to the side to form a relief groove, and it is inserted into the connecting rod (53) through the relief groove. The two sides of the baffle (54) abut against the first protective plate (31) and the protrusion (55) respectively.

6. The stress detection device for bridge cables according to claim 2, characterized in that: The fixed frame (11) located on both sides of the detection device (2) is provided with guide grooves (33) on opposite sides, and the second protective plate (32) is slidably connected in the guide grooves (33).

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