Deformation monitoring device for girder of bridge girder erection machine

Abstract

The utility model discloses a bridge girder erection machine girder deformation monitoring device which comprises a girder and a support arranged in the length direction of the girder, a plurality of polished rods are connected to the support in a sliding mode, one end of each polished rod is fixedly connected with the girder, a pressing disc is arranged on each polished rod, a pressure sensor is arranged at the position, below the pressing disc, of the support, and the pressure sensor is connected with a host. When the main beam deforms, the polished rod is driven to move downwards, the pressure plate applies pressure to the pressure sensor, and the pressure sensor transmits a pressure signal to the host; according to the utility model, the plurality of polished rods are fixedly connected with the main beam, and when the main beam deforms, the pressure plates on the polished rods apply pressure to the pressure sensors, so that the purpose of monitoring the deformation of the main beam in real time is achieved, deformation monitoring can be carried out at any plurality of measuring points of the main beam according to requirements, and the purpose of monitoring the deformation of the whole section of the main beam is achieved; the overall structure is simple, cost is low, installation and construction are convenient, deformation monitoring of different girders can be adapted, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge erection machines, in particular to a bridge erection machine main beam deformation monitoring device. Background Art

[0002] A bridge erection machine is a special construction machine that hoists prefabricated reinforced concrete beams on bridge supports. It is mainly composed of a main structure, a crane system, a through-hole system and a power system. Bridge erection machines are widely used in urban elevated, rail transit and bridge projects under various terrain and climatic conditions, improving the efficiency and quality of beam erection construction. With the continuous advancement of technology, the performance and functions of bridge erection machines are also constantly improving and perfecting. Patent application No. 202410492568.3 discloses a bridge erection machine that can realize a small curve line, including a main beam arranged on a bridge, and two lifting trolleys that can move along the length of the main beam are arranged on the main beam. The lifting trolley lifts the beam piece and moves it. The main beam bears a huge load during the construction process. If the main beam is excessively deformed, it may cause structural instability, causing serious accidents such as collapse, threatening the lives of construction workers and the integrity of equipment. Therefore, it is necessary to monitor the deformation of the main beam of the bridge-building machine in real time. When the lifting trolley is moving, the load on the main beam is also changing. The commonly used monitoring equipment is strain sensor or displacement sensor, and laser rangefinder is used in some occasions. This monitoring equipment can only measure the fixed point of the main beam, and it is difficult to monitor the entire section of the main beam. For this reason, the present application proposes a deformation monitoring device for the main beam of the bridge-building machine to solve the above problem. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a multi-point monitoring device for monitoring deformation of the main beam of a bridge erecting machine.

[0004] In order to solve the above technical problems, the utility model includes a main beam and a bracket arranged along the length direction of the main beam, a plurality of light rods are slidably connected to the bracket, one end of the light rod is fixedly connected to the main beam, a pressure plate is arranged on the light rod, and the bracket is provided with a pressure sensor below the pressure plate. The pressure sensor is connected to the main machine. When the main beam is deformed, the light rod is driven to move downward, the pressure plate applies pressure to the pressure sensor, and the pressure sensor transmits the pressure signal to the main machine.

[0005] Preferably, the bracket is arranged on the upper top surface of the main beam.

[0006] Preferably, the bracket includes vertical frames fixed at both ends of the main beam, a horizontal frame is fixedly connected between the vertical frames, a plurality of through holes are provided on the horizontal frame, and the light rod slides through the through holes and is connected to the main beam.

[0007] Preferably, a threaded section is provided at the upper end of the polished rod, and the pressure plate is threadably connected to the threaded section.

[0008] Preferably, a limit ring is provided below the pressure plate, and the limit ring is lower than the pressure sensor.

[0009] Preferably, a laser sensor is fixed to the side of the vertical frame at one end of the horizontal frame, and a receiver is fixedly connected to the side of the vertical frame at the other end of the horizontal frame, and the receiver is used to receive the laser emitted by the laser sensor.

[0010] Preferably, it also includes a warning light, which is connected to the host, and the number of the warning lights is multiple and corresponds to the pressure sensors one by one.

[0011] Preferably, it also includes an alarm connected to the host.

[0012] The beneficial effects of the utility model are as follows: the utility model is fixedly connected to the main beam through a plurality of light rods. When the main beam is deformed, the pressure plate on the light rod applies pressure to the pressure sensor, thereby achieving the purpose of real-time monitoring of the deformation of the main beam. The deformation monitoring can be performed at any number of measuring points of the main beam as required, thereby achieving the purpose of deformation monitoring of the entire section of the main beam. The overall structure is simple, the cost is low, and the installation and construction are convenient. It can adapt to the deformation monitoring of different main beams and has a wide range of adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the utility model;

[0014] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0015] Figure 3 It is a side schematic diagram of the overall structure of the utility model.

[0016] In the figure: 1. main beam; 2. vertical frame; 3. horizontal frame; 4. through hole; 5. bare rod; 6. pressure plate; 7. pressure sensor; 8. main machine; 9. threaded section; 10. limit ring; 11. laser sensor; 12. receiver; 13. warning light; 14. alarm. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the utility model in conjunction with the accompanying drawings in the embodiments of the utility model. All directional indications in the utility model (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0018] like Figure 1-3As shown, this embodiment provides a bridge-building machine main beam deformation monitoring device, including a main beam 1 and a bracket arranged along the length direction of the main beam 1, the main beam 1 is equipped with a front support leg, a middle support leg and a rear support leg, which is a prior art and is not described separately here, the bracket is arranged on the upper top surface of the main beam 1, does not affect the movement of the lower beam piece of the main beam 1, and a plurality of light rods 5 are slidably connected to the bracket. Specifically, the bracket includes a vertical frame 2 fixed at both ends of the main beam 1, a horizontal frame 3 is fixedly connected between the vertical frames 2, and a plurality of through holes 4 are arranged on the horizontal frame 3, the light rod 5 slides through the through holes 4 and is connected to the main beam 1, when the main beam 1 is deformed, the light rod 5 is driven to move downward, a pressure plate 6 is arranged on the light rod 5, and the bracket is positioned A pressure sensor 7 is provided below the pressure plate 6. The pressure sensor 7 is connected to the main machine 8. A control screen is provided on the main machine 8. When the main beam 1 is deformed, the light rod 5 is driven to move downward, and the pressure plate 6 applies pressure to the pressure sensor 7. The pressure sensor 7 transmits the pressure signal to the main machine 8. In the initial state, the pressure plate 6 has a certain distance from the main beam 1. When the main beam 1 is deformed downward, the light rod 5 will move to a certain distance. When the pressure plate 6 on the light rod 5 applies pressure to the pressure sensor 7, the threshold of the deformation of the main beam 1 is reached. The main machine 8 receives the signal and promptly reminds the staff to take safety precautions. At the same time, according to the signals transmitted by different pressure sensors 7, the specific deformation part of the main beam 1 can be determined.

[0019] The part of the polished rod 5 located above the cross frame 3 is provided with a threaded section 9, and the pressure plate 6 is threadedly connected to the threaded section 9, so that the position of the pressure plate 6 from the pressure sensor 7 can be adjusted, and the position of the pressure plate 6 is set according to the deformation threshold of different parts of the main beam 1. A limit ring 10 is provided below the pressure plate 6, and the limit ring 10 is fixedly connected to the cross frame 3. The limit ring 10 is lower than the pressure sensor 7 to prevent the main beam 1 from being deformed too much and the pressure plate 6 from damaging the pressure sensor 7.

[0020] A laser sensor 11 is fixed to the side of the vertical frame 2 at one end of the cross frame 3, and a receiver 12 is fixedly connected to the side of the vertical frame 2 at the other end of the cross frame 3. The receiver 12 can be a position sensitive detector or a charge coupled device. The receiver 12 is used to receive the laser emitted by the laser sensor 11. The laser sensor 11 and the receiver 12 are both connected to the host 8. When the main beam 1 is erected, the laser sensor 11 emits a laser and receives it through the receiver 12 to ensure that the main beam 1 is in a horizontal state. When the receiver 12 cannot receive the laser emitted by the laser sensor 11, it means that the two ends of the main beam 1 are not on the same horizontal plane and height adjustment is required. It can also avoid deformation of the free end of the main beam 1 during construction.

[0021] In order to enable the staff to know the deformation of the main beam 1 in time, an alarm system is also provided, which includes a warning light 13 and an alarm 14. The alarm 14 is an audible and visual alarm. The warning light 13 and the alarm 14 are both connected to the main unit 8. The warning light 13 is provided in multiple numbers and corresponds to the pressure sensor 7 one by one. The warning light 13 is provided on the side of the beam. When the main beam 1 is deformed, the warning light 13 at that part of the main beam 1 lights up, which is convenient for the staff to identify the deformation position of the main beam 1. At the same time, the alarm 14 sounds an alarm, which is convenient for the staff to know the danger alarm in time.

[0022] Its working principle is: after the main beam 1 is erected, the upright frames 2 at both ends of the bracket are fixedly connected to the main beam 1, and the light rod 5 is fixed at the weak stress position of the main beam 1. The light rod 5 passes through the through hole 4 on the cross frame 3, and the positions of the pressure plate 6 and the pressure sensor 7 are adjusted. During the construction process, when the main beam 1 is deformed, the pressure plate 6 on the light rod 5 applies pressure to the pressure sensor 7, and the host 8 receives the signal and controls the warning light 13 and the alarm 14 in the alarm system to turn on, and warn the staff, thereby achieving the purpose of real-time monitoring of the deformation of the main beam 1. Deformation monitoring can be performed at any number of measuring points of the main beam 1 according to needs, thereby achieving the purpose of deformation monitoring of the entire section of the main beam 1. The overall structure is simple, the cost is low, and it is easy to install and construct. It can adapt to different deformation monitoring of main beams 1 and has a wide range of adaptability.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge erection machine main beam deformation monitoring device, comprising a main beam and a bracket arranged along the length direction of the main beam, characterized in that: A plurality of light rods are slidably connected to the bracket, one end of the light rod is fixedly connected to the main beam, a pressure plate is arranged on the light rod, and a pressure sensor is arranged below the pressure plate on the bracket. The pressure sensor is connected to the main machine. When the main beam is deformed, the light rod is driven to move downward, the pressure plate applies pressure to the pressure sensor, and the pressure sensor transmits the pressure signal to the main machine.

2. A bridge erection machine main beam deformation monitoring device according to claim 1, characterized in that: The bracket is arranged on the upper top surface of the main beam.

3. A bridge erection machine main beam deformation monitoring device according to claim 2, characterized in that: The bracket comprises vertical frames fixed at two ends of the main beam, a horizontal frame is fixedly connected between the vertical frames, a plurality of through holes are arranged on the horizontal frame, and the light rod slides through the through holes and is connected to the main beam.

4. A bridge erection machine main beam deformation monitoring device according to claim 3, characterized in that: The upper end of the polished rod is provided with a threaded section, and the pressure plate is threadedly connected to the threaded section.

5. The bridge erection machine main beam deformation monitoring device according to claim 1 is characterized in that: A limiting ring is arranged below the pressure plate, and the limiting ring is lower than the pressure sensor.

6. A bridge erection machine main beam deformation monitoring device according to claim 3, characterized in that: A laser sensor is fixed on the side of the vertical frame at one end of the horizontal frame, and a receiver is fixedly connected to the side of the vertical frame at the other end of the horizontal frame. The receiver is used to receive the laser emitted by the laser sensor.

7. A bridge erection machine main beam deformation monitoring device according to any one of claims 1 to 6, characterized in that: It also includes a warning light, which is connected to the host. The warning light is provided in plurality and is arranged in one-to-one correspondence with the pressure sensors.

8. A bridge erection machine main beam deformation monitoring device according to any one of claims 1 to 6, characterized in that: Also included is an alarm, which is connected to the host.

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