Lifting lug type suspender cable force testing device

Abstract

The utility model discloses a lifting lug type suspender cable force testing device, which is characterized in that a support plate and a stress frame body are arranged in a matching way, are respectively connected with inhaul cables of an upper half section and a lower half section and are buckled together under the influence of the tensile force of the inhaul cables, and a pressure sensor clamped between the support plate and the stress frame body can accurately monitor the tensile force of the inhaul cables; the bridge inhaul cable pressure testing device can be connected in series in an inhaul cable stress structure of a bridge, the pressure sensor can accurately monitor cable force for a long time, the carrier plate can be separated from a pressure testing surface by slowly unscrewing the nut, then a worker can maintain and replace the pressure sensor, and the bridge inhaul cable pressure testing device is easy and convenient to operate and high in reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of eye-type suspension rod cable force testing devices, in particular to an eye-type suspension rod cable force testing device. Background Art

[0002] In recent years, my country's bridge engineering has been developing continuously, and the issue of bridge safety has also received more and more attention from the society. Cable tension state is an important indicator for measuring bridge safety. Accurate monitoring of the distribution and changes of cable tension can provide a basis for subsequent analysis of changes in the internal forces of bridge structures.

[0003] At present, cable tension monitoring can be measured by vibration frequency method and pressure sensor. The measurement accuracy of vibration frequency method is affected by factors such as cable length, shock absorber, outer sheath, etc., and its parameters such as moment of inertia and bending stiffness are difficult to determine, resulting in a certain error in the final cable tension measurement. Pressure sensor measurement has higher accuracy and can be monitored for a long time through automated measurement. However, since pressure sensors are connected in series in the load-bearing structure, it is difficult to repair or replace them once damaged. In addition, the service life of the bridge is more than 100 years, while the service life of pressure sensors is mostly 3 to 5 years. Utility Model Content

[0004] Therefore, in order to solve the above-mentioned problems, the purpose of the utility model is to provide a lifting ear type boom cable tension testing device, including a force-bearing frame, the force-bearing frame is hollow to form a pressure groove, the pressure groove includes a pressure testing surface, a carrier plate is provided in the pressure groove, the carrier plate can move in the pressure groove along the direction of the cable, a pressure sensor is connected to the side of the carrier plate facing the pressure testing surface, the pressure sensor is abutted against the pressure testing surface, the force-bearing frame is connected to the lower half of the cable, and the carrier plate is connected to the upper half of the cable.

[0005] Preferably, a reserved hole is provided on the carrier plate, a screw is passed through the reserved hole, a nut is provided on the side of the carrier plate facing away from the pressure sensor and the nut is threadedly connected to the screw, a double-ear plate connecting piece is connected to the end of the screw away from the nut, and the carrier plate is connected to the upper half of the cable through the double-ear plate connecting piece.

[0006] Preferably, one end of the force-bearing frame away from the double-ear plate connecting piece is connected to a single-ear plate connecting piece, and the force-bearing frame is connected to the lower half of the cable through the single-ear plate connecting piece.

[0007] Preferably, the carrier plate is rectangular, and there are four reserved holes which are respectively arranged at the corners of the rectangular carrier plate.

[0008] Preferably, the carrier plate is provided with limiting columns which are arranged circumferentially with the pressure sensor as the center.

[0009] Preferably, the pressure sensor is connected to a collection module.

[0010] The beneficial effects of the utility model are:

[0011] The utility model can be connected in series in the cable stress-bearing structure of the bridge. The pressure sensor can monitor the cable force accurately and for a long time. By slowly loosening the nut, the carrier plate can be separated from the pressure test surface. The staff can then maintain and replace the pressure sensor. The operation is simple and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the upper structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the lower structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the split structure of the utility model;

[0016] Explanation of the accompanying drawings: 1. force-bearing frame; 2. carrier plate; 21. nut; 3. pressure sensor; 31. limit column; 4. screw; 5. double-ear plate connecting piece; 6. single-ear plate connecting piece.

[0017] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0020] Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0021] Embodiment 1:

[0022] Figure 1-Figure 3 The utility model shows a hanging ear type suspension rod cable tension testing device, comprising a force-bearing frame 1, the force-bearing frame 1 is hollow to form a pressure groove, the pressure groove has a pressure testing surface, the pressure groove is clamped with a carrier plate 2, the carrier plate 2 can move forward or reverse along the direction of the cable in the pressure groove, a pressure sensor 3 is installed on the carrier plate 2, the carrier plate 2 and the force-bearing frame 1 are respectively connected to the upper and lower halves of the cable, the cable provides relative force to the carrier plate 2 and the force-bearing frame 1, so that the carrier plate 2 and the force-bearing frame 1 move relative to each other and abut and clamp, at this time the pressure sensor 3 abuts on the pressure testing surface, the pressure sensor 3 can monitor the pressure it is subjected to.

[0023] The carrier plate 2 is connected to the cable through the cooperation of a screw rod 4, a nut 21 and an ear plate. Specifically, a reserved hole is provided on the carrier plate 2, and a screw rod 4 is inserted into the reserved hole. A nut 21 is provided on the side of the carrier plate 2 facing away from the pressure sensor 3. The nut 21 is threadedly connected to the screw rod 4, and the end of the screw 4 away from the nut 21 is connected to a double-ear plate connecting piece 5. The carrier plate 2 is connected to the upper half of the cable through the double-ear plate connecting piece 5. The upper half of the cable is provided with a single-ear plate suspension rod corresponding to the double-ear plate connecting piece 5. When the cable applies tension to the double-ear plate connecting piece 5, the screw rod 4 is pulled to move, and the nut 21 abuts against the side of the carrier plate 2 facing away from the pressure sensor 3 to apply pressure toward the pressure test surface to the carrier plate 2, thereby achieving the purpose of measuring the cable force when the pressure sensor 3 abuts against the pressure test surface.

[0024] One end of the force-bearing frame 1 away from the double-ear plate connecting member 5 is connected to a single-ear plate connecting member 6, and the force-bearing frame 1 is connected to the lower half of the cable through the single-ear plate connecting member 6. Specifically, the lower half of the cable is provided with a double-ear plate hanger corresponding to the single-ear plate connecting member 6. When the cable applies tension to the single-ear plate connecting member 6, the force-bearing frame 1 is pulled to move in the opposite direction of the moving direction of the carrier plate 2, so that the pressure sensor 3 is pressed against the pressure test surface.

[0025] The single-ear plate connecting piece 6 and the double-ear plate hanging rod, and the double-ear plate connecting piece 5 and the single-ear plate hanging rod can be fixedly connected together through coaxial pin holes.

[0026] The carrier plate 2 is rectangular, which is convenient for manufacturing and connection. Accordingly, there are four reserved holes and they are arranged at the corners of the rectangular carrier plate 2. There are also four groups of screws 4 and nuts 21. The four screws 4 are connected to a double-ear plate connector 5 at the same time.

[0027] The carrier plate 2 is provided with limiting columns 31 which are arranged circumferentially with the pressure sensor 3 as the center, and are used to limit the displacement and misalignment of the pressure sensor 3 .

[0028] The pressure sensor 3 is connected to a collection module, which collects data fed back by the pressure sensor 3 and sends it to the bridge safety monitoring center via wireless transmission. It can automatically monitor the cable tension in real time, and can also preset a threshold value based on the cable tension and issue a warning when a certain threshold is reached. This part is an existing data communication technology and will not be elaborated here.

[0029] Working principle:

[0030] The carrier plate 2 and the stress-bearing frame 1 are matched to be connected to the cables of the upper and lower sections respectively and buckled together under the influence of the cable tension. The pressure sensor 3 sandwiched between the two can accurately monitor the cable tension. When the pressure sensor 3 reaches the end of its service life or fails, the nut 21 is screwed to keep it away from the pressure test surface of the stress-bearing frame 1. The carrier plate 2 is separated from the pressure test surface together with the pressure sensor 3. At this time, the pressure sensor 3 can be maintained and replaced. There are multiple cables on the bridge, and replacing the pressure sensors 3 one by one will not affect the normal use of the bridge.

[0031] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A hanging ear type suspension rod cable force testing device, characterized in that: The invention comprises a force-bearing frame (1), wherein the force-bearing frame (1) is hollow to form a pressure groove, wherein the pressure groove comprises a pressure test surface, wherein a carrier plate (2) is arranged in the pressure groove, wherein the carrier plate (2) can move in the pressure groove along the direction of the cable, wherein a pressure sensor (3) is connected to the side of the carrier plate (2) facing the pressure test surface, wherein the pressure sensor (3) is in contact with the pressure test surface, wherein the force-bearing frame (1) is connected to the lower half of the cable, and wherein the carrier plate (2) is connected to the upper half of the cable.

2. The eye-type suspension rod cable force testing device according to claim 1, characterized in that: The carrier plate (2) is provided with a reserved hole, a screw rod (4) is inserted into the reserved hole, a nut (21) is provided on a side of the carrier plate (2) facing away from the pressure sensor (3), and the nut (21) is threadedly connected to the screw rod (4), and a double-ear plate connecting piece (5) is connected to the end of the screw rod (4) away from the nut (21), and the carrier plate (2) is connected to the upper half of the cable via the double-ear plate connecting piece (5).

3. The eye-type suspension rod cable force testing device according to claim 2, characterized in that: One end of the force-bearing frame (1) away from the double-ear plate connecting piece (5) is connected to a single-ear plate connecting piece (6), and the force-bearing frame (1) is connected to the lower half of the cable via the single-ear plate connecting piece (6).

4. The eye-type suspension rod cable force testing device according to claim 3, characterized in that: The carrier plate (2) is rectangular, and there are four reserved holes which are arranged at the corners of the rectangular carrier plate (2).

5. The eye-type suspension rod cable force testing device according to claim 1, characterized in that: The carrier plate (2) is provided with limiting columns (31) which are arranged circumferentially with the pressure sensor (3) as the center.

6. The eye-type suspension rod cable force testing device according to claim 1, characterized in that: The pressure sensor (3) is connected to a collection module.

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