Monitoring device and system for main beam of spliced wide beam bridge girder erection machine

Abstract

The utility model discloses a monitoring device and system for a main beam of a spliced wide beam bridge girder erection machine, and relates to the technical field of bridge girder erection equipment safety monitoring, the monitoring device comprises eight levelness sensors, a controller and an alarm, the levelness sensors are installed at eight monitoring points, corresponding to four fixed supporting legs of the bridge erecting machine and four movable supporting legs of the bridge erecting machine, of a main beam of the bridge erecting machine respectively. The controller is electrically connected with the eight levelness sensors and obtains levelness values, collected by the eight levelness sensors, of the corresponding monitoring points. And the alarm is connected with the controller. The controller obtains the levelness values of the corresponding monitoring points collected by the eight levelness sensors, and when the levelness values of the eight monitoring points do not meet the set requirements, the controller controls the alarm to give an alarm prompt, so that the safety of personnel and equipment is ensured, the monitoring precision is high, the automation degree is high, and the monitoring efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of safety monitoring technology for bridge erection equipment, and in particular to a monitoring device and system for the main beam of a bridge erection machine that widens the beam. Background Technology

[0002] With the development of infrastructure construction, especially the increase in large-scale bridges, highways, railways, and other projects, the demand for large-scale engineering machinery and equipment is growing. Among them, the bridge widening girder erecting machine is a heavy-duty equipment specifically designed for bridge construction, used to continuously erect single or double widening girders on both sides of the main line box girder.

[0003] The bridge erecting machine consists of a main beam, outriggers, a lifting trolley, and a traveling mechanism. The outriggers include four fixed outriggers and four movable outriggers, each with a vertical telescopic cylinder. During beam erection, if the gradient force of the bridge erecting machine exceeds the lateral rolling friction, it can cause lateral stalling of the longitudinal beams on the machine, leading to a major accident. During span crossing operations, it is crucial to maintain the horizontal height difference between the two lateral points of the main beam to prevent excessive stress at the connection points between the longitudinal connecting beams and the transverse main beams due to excessive torsion. Therefore, the levelness of the main beam of the widening beam bridge erecting machine directly affects the quality and safety of bridge construction.

[0004] To ensure the safety and reliability of the bridge erecting machine during construction, the traditional method involves manually measuring and monitoring the levelness of the main beam. This method suffers from problems such as low accuracy and low efficiency. Utility Model Content

[0005] This utility model provides a monitoring device and system for the main beam of a bridge girder erection machine, in order to solve the technical problem that the levelness of the main beam of the existing bridge girder erection machine is monitored by manual measurement, which has low accuracy and low efficiency.

[0006] Firstly, a monitoring device for the main beam of a bridge girder erection machine is provided, the monitoring device comprising:

[0007] Eight levelness sensors are installed at eight monitoring points on the main beam of the bridge erecting machine, corresponding to the four fixed legs and four movable legs of the bridge erecting machine.

[0008] The controller is electrically connected to the eight levelness sensors and acquires the levelness values ​​of the corresponding monitoring points collected by the eight levelness sensors.

[0009] An alarm device, which is connected to the controller.

[0010] In some embodiments, the monitoring device further includes:

[0011] Four stress sensors are respectively installed at the main beam segments of the bridge erecting machine between the four fixed legs and the four movable legs of the bridge erecting machine, and the four stress sensors are connected to the controller.

[0012] In some embodiments, the stress sensor is a resistive stress sensor or a piezoelectric stress sensor.

[0013] In some embodiments, the monitoring device further includes:

[0014] Four position sensors are respectively installed inside the vertical cylinders of the four fixed legs of the bridge erecting machine.

[0015] In some embodiments, the alarm includes a buzzer and an indicator light.

[0016] In some embodiments, the eight level sensors are electrically connected to the controller via a 485 bus.

[0017] In some embodiments, the monitoring device further includes:

[0018] A human-machine interface display, which is electrically connected to the controller.

[0019] In some embodiments, the controller is a PLC.

[0020] In some embodiments, the levelness sensor is a hydrostatic level sensor.

[0021] Secondly, a monitoring system for the main beam of a bridge girder widening machine is provided, including the aforementioned monitoring system for the main beam of the bridge girder widening machine.

[0022] The beneficial effects of the technical solution provided by this utility model include:

[0023] This utility model embodiment provides a monitoring device and system for the main beam of a bridge girder erection machine. The monitoring device is equipped with eight levelness sensors, a controller, and an alarm. The controller acquires the levelness values ​​of the corresponding monitoring points collected by the eight levelness sensors. When the levelness values ​​of the eight monitoring points do not meet the set requirements, the controller controls the alarm to issue an alarm prompt, ensuring the safety of personnel and equipment. The device has high monitoring accuracy, high degree of automation, and greatly improves monitoring efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A schematic diagram of a monitoring device for the main beam of a bridge girder erection machine for widening beams, provided for an embodiment of this utility model;

[0026] Figure 2 A top view of a beam-splitting bridge erecting machine provided for an embodiment of this utility model;

[0027] Figure 3 A front view of a beam-splitting bridge erecting machine provided in an embodiment of this utility model;

[0028] Figure 4 A rear view of a bridge erecting machine for widening beams provided for an embodiment of this utility model;

[0029] Figure label:

[0030] 1. Levelness sensor;

[0031] 2. Controller;

[0032] 3. Alarm device;

[0033] 4. Stress sensor;

[0034] 5. Bridge erecting machine; 51. Fixed outriggers; 511. Position sensor; 52. Movable outriggers; 53. Main beam; 54. Longitudinal beams;

[0035] 6. Human-machine interface display. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] This utility model provides a monitoring device for the main beam of a bridge girder erection machine, which can solve the technical problems of low accuracy and low efficiency in monitoring the levelness of the main beam of the existing bridge girder erection machine by manual measurement.

[0038] See Figure 1 As shown in the figure, this utility model embodiment provides a monitoring device for the main beam of a bridge beam widening machine. The monitoring device includes: eight levelness sensors 1, a controller 2, and an alarm 3.

[0039] The eight levelness sensors 1 are respectively installed at eight monitoring points on the main beam 53 of the bridge erecting machine 5, corresponding to the four fixed legs 51 and the four movable legs 52 of the bridge erecting machine 5. The controller 2 is electrically connected to the eight levelness sensors 1 and acquires the levelness values ​​of the corresponding monitoring points collected by the eight levelness sensors 1. The alarm 3 is connected to the controller 1.

[0040] See Figure 2 and Figure 3 As shown, the four levelness sensors 1 are, in sequence, the levelness sensor of the front left movable outrigger, the levelness sensor of the front left fixed outrigger, the levelness sensor of the front right fixed outrigger, and the levelness sensor of the front right movable outrigger. See also Figure 2 and Figure 4 As shown, the other four levelness sensors 1 are, in order, the levelness sensor of the rear left movable outrigger, the levelness sensor of the rear left fixed outrigger, the levelness sensor of the rear right fixed outrigger, and the levelness sensor of the rear right movable outrigger. The controller 2 acquires the levelness values ​​collected by the eight levelness sensors 1 and performs monitoring and alarm based on the levelness values ​​collected by the eight levelness sensors 1.

[0041] See Figure 2 , Figure 3 and Figure 4 As shown, the posture of the main beam 53 of the bridge erecting machine 5 is manually adjusted and the initial levelness values ​​of the eight levelness sensors 1 are calibrated. It is assumed that the initial levelness values ​​of the eight levelness sensors 1 are X1... 活 (Front left movable outrigger level sensor), X2 活 (Front right movable outrigger level sensor), X3 活 (Rear left movable outrigger level sensor), X4 活 (Rear right movable outrigger level sensor), X1 固 (Front left fixed outrigger level sensor), X2 固 (Front right fixed outrigger level sensor), X3 固 (Rear left fixed outrigger level sensor), X4 固 (Rear right fixed outrigger level sensor), ideally all eight values ​​are 0mm.

[0042] When X1 活 X1 固 >X2 活 >X2 固At that time, the left side of the main beam 51 of the bridge erecting machine 5 is higher than the right side; when X1 活 <X1 固 <X2 活 <X2 固 At that time, the main beam 51 of bridge erecting machine 5 is lower on the left and higher on the right; when X1 固 >X3 固 And X2 固 >X4 固 At that time, the front side of the main beam 51 of the bridge erecting machine 5 is higher than the rear side; when X1 固 <X3 固 And X2 固 <X4 固 At that time, the front side of the main beam 51 of the bridge erecting machine 5 is lower and the rear side is higher; when X1 固 >X3 固 And X2 固 <X4 固 At that time, the main beam 51 of bridge erecting machine 5 is characterized by a high front left, a low front right, a low rear left, and a high rear right; when X1 固 <X3 固 And X2 固 >X4 固 At this time, the main beam 51 of the bridge erecting machine 5 is lower at the front left, higher at the front right, higher at the rear left, and lower at the rear right. When the difference between any two adjacent monitoring points acquired by the controller 2 exceeds a preset first safety threshold (e.g., 50mm), the controller 2 controls the alarm 3 to issue an alarm. Optionally, when the difference between two adjacent monitoring points exceeds a preset second safety threshold (e.g., 80mm), the controller 2 can activate a restriction protection mechanism to restrict the bridge erecting machine 5 from performing beam erection or span construction. The restriction protection mechanism needs to be released after the levelness value of the main beam 53 of the bridge erecting machine 5 is adjusted to normal. Specifically, the alarm 3 can include a buzzer and an indicator light to provide audible and visual alarm prompts. For example, the buzzer, indicator light, and a controllable switch can be connected to a power supply to form a circuit. When the difference between any two adjacent monitoring points exceeds the preset first safety threshold (e.g., 50mm), the controller controls the controllable switch to conduct, and the buzzer and indicator light start to provide audible and visual alarm prompts.

[0043] The monitoring device for the main beam of the bridge girder erection machine of this utility model embodiment is equipped with eight levelness sensors, a controller and an alarm. The controller acquires the levelness values ​​of the corresponding monitoring points collected by the eight levelness sensors. When the levelness values ​​of the eight monitoring points do not meet the set requirements, the controller controls the alarm to issue an alarm prompt, ensuring the safety of personnel and equipment. It has high monitoring accuracy, high degree of automation and greatly improves monitoring efficiency.

[0044] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1 , Figure 3and Figure 4 As shown, the monitoring device also includes four stress sensors 4, which are respectively installed at the main beam 53 segment of the bridge erecting machine 5 between the four fixed legs 51 and the four movable legs 52 of the bridge erecting machine 5, and the four stress sensors 4 are connected to the controller 2.

[0045] When the longitudinal beam 54 above the main beam 53 of the bridge erecting machine 5 travels laterally beyond the position of the fixed support leg 51 of the bridge erecting machine 5, it is necessary to ensure that the two movable support legs 52 in the direction of movement are supported on the bridge piers. Otherwise, the main beam 53 of the bridge erecting machine 5 in the direction of movement may seriously deflect downwards, or even cause the machine to overturn. Stress sensors 4 are installed at the main beam 53 segment between the fixed support leg 51 and the movable support leg 52. The controller 2 acquires the stress parameters collected by the stress sensor 4 in real time. When the stress parameters collected by the stress sensor 4 exceed the preset stress threshold, the controller 2 can also perform alarm and limit action protection. Optionally, the stress sensor 4 is a resistive stress sensor or a piezoelectric stress sensor. Resistive stress sensors have the characteristics of simple structure and good stability, while piezoelectric stress sensors have the characteristics of high sensitivity and fast response.

[0046] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1 , Figure 3 and Figure 4 As shown, the monitoring device also includes four position sensors 511, which are respectively installed inside the vertical cylinders of the four fixed outriggers 51 of the bridge erecting machine 5. When the bridge erecting machine is performing cross-span construction, the overall height of the machine needs to be lowered by 500mm-1000mm. This requires real-time synchronization of the vertical cylinders of the four fixed outriggers 51 to ensure that the longitudinal and transverse levelness values ​​of the main beam 53 are within a reasonable range. By incorporating the position sensors 511 within the vertical cylinders, the controller can employ PID closed-loop control to drive the proportional control valves to adjust the vertical cylinders, ensuring that the height of the main beam 53 is slowly and synchronously adjusted.

[0047] As an optional implementation, in one embodiment of the invention, the eight levelness sensors 1 are electrically connected to the controller 2 via a 485 bus. The 485 bus features strong anti-interference capability, high transmission rate, long transmission distance, and multi-site transmission.

[0048] As an optional implementation, in one embodiment of the utility model, see [link to utility model description]. Figure 1 As shown, the monitoring device also includes a human-machine interface display 6, which is electrically connected to the controller 2. The human-machine interface display 6 can display the data collected by the eight levelness sensors 1 in real time, facilitating monitoring and use by staff.

[0049] As an optional implementation, in one embodiment of the utility model, the controller 2 is a PLC. PLCs typically adopt industrial-grade design and manufacturing standards, have high reliability and stability, and can operate for extended periods in harsh industrial environments.

[0050] As an optional implementation, in one embodiment of the utility model, the level sensor 1 is a hydrostatic level sensor. The working principle of the hydrostatic level sensor is to monitor the levelness value using the pressure difference in a closed liquid. When the reference point is set to zero, the level instrument settles along with the measured point; the change in elevation difference between the reference point and the measured point is the levelness value of the measured point, expressed by measuring the liquid pressure difference. The hydrostatic level sensor is characterized by its small size, high accuracy, and strong adaptability.

[0051] This utility model embodiment also provides a monitoring system for the main beam of a bridge girder widening machine, including the aforementioned monitoring system for the main beam of the bridge girder widening machine.

[0052] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0053] It should be noted that in this invention, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the present invention.

Claims

1. A monitoring device for the main beam of a bridge girder erection machine, characterized in that, The monitoring device includes: Eight levelness sensors (1) are installed at eight monitoring points on the main beam (53) of the bridge erecting machine, corresponding to the four fixed legs (51) and four movable legs (52) of the bridge erecting machine. The controller (2) is electrically connected to the eight level sensors and acquires the level values ​​of the corresponding monitoring points collected by the eight level sensors. An alarm (3) is connected to the controller.

2. The monitoring device for the main beam of the bridge girder erection machine according to claim 1, characterized in that, The monitoring device also includes: Four stress sensors (4) are respectively installed at the main beam (53) segment of the bridge erecting machine (5) between the four fixed legs (51) and the four movable legs (52) of the bridge erecting machine (5), and the four stress sensors (4) are connected to the controller (2).

3. The monitoring device for the main beam of the bridge girder erection machine according to claim 2, characterized in that: The stress sensor (4) is a resistive stress sensor or a piezoelectric stress sensor.

4. The monitoring device for the main beam of the bridge girder erection machine according to claim 1, characterized in that, The monitoring device also includes: Four position sensors (511) are respectively installed inside the vertical cylinders of the four fixed legs (51) of the bridge erecting machine.

5. The monitoring device for the main beam of the bridge girder erection machine according to claim 1, characterized in that: The alarm (3) includes a buzzer and an indicator light.

6. The monitoring device for the main beam of the bridge girder erection machine according to claim 1, characterized in that: The eight levelness sensors (1) are electrically connected to the controller (2) via a 485 bus.

7. The monitoring device for the main beam of the bridge girder erection machine according to claim 1, characterized in that, The monitoring device also includes: The human-machine interface display (6) is electrically connected to the controller (2).

8. The monitoring device for the main beam of the bridge girder erection machine according to claim 1, characterized in that: The controller (2) is a PLC.

9. The monitoring device for the main beam of the bridge girder erection machine according to claim 1, characterized in that: The levelness sensor (1) is a hydrostatic level sensor.

10. A monitoring system for the main beam of a bridge girder erection machine, characterized in that, include: The monitoring system for the main beam of the bridge-building machine for widening beams as described in any one of claims 1-9.

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