Folding bridge frame damage monitoring apparatus and method

Abstract

A folding bridge frame damage monitoring apparatus. The apparatus comprises tension sensors (1) and a control module; a folding bridge frame (4) comprises a plurality of bridge frame sections connected in sequence; two ends of two adjacent bridge frame sections are connected to each other by means of an anchor pin (6); the anchor pins (6) on two sides of the bridge frame section at the top of the folding bridge frame (4) are respectively connected to bridge frame fixing points (5) by means of top steel wire ropes; the tension sensors (1) are fixed on the top steel wire ropes and are connected to the control module; two sides of each bridge frame section are respectively provided with fixing snap rings (2) and connecting steel wire ropes (3); the upper end of each connecting steel wire rope (3) is sleeved on the preceding connecting steel wire rope (3) or the corresponding top steel wire rope by means of the corresponding fixing snap ring (2), and the lower end of each connecting steel wire rope (3) is fixed on the anchor pin (6) at the bottom of the corresponding bridge frame section; and the control module collects in real time tension values transmitted by the tension sensors (1), and generates a device alarm signal if the tension values are greater than a preset alarm limit value. Further comprised is a folding bridge frame damage monitoring method.

Description

Folded bridge damage monitoring device and method TECHNICAL FIELD

[0001] The present application relates to the folded bridge monitoring technical field, especially to a folded bridge damage monitoring device and method. BACKGROUND

[0002] As shown in Figure 1, the folded bridge as a key equipment connected to the hoist system, in the hoist lifting process, the state of the folded bridge determines whether the entire hoist system can run safely and stably. The existing folded bridge is only fixed on the top of the steel wire rope as a force point, the weight of the entire folded bridge acts on the steel wire rope, in the movement process, the phenomenon of angle pin falling off or folded bridge connection angle pin falling off is easy to occur, however, there is no obvious judgment basis to show whether a failure occurs in the use process of the existing folded bridge.

[0003] If the fixed angle pin or the connection angle pin of the folded bridge falls off, the weight of the entire or part of the folded bridge will act on the cable connected to the hoist system, causing the cable to be damaged under stress, and in severe cases, it may cause the entire folded bridge to fall off, resulting in a major safety accident of the equipment. SUMMARY

[0004] The purpose of the present application is to overcome the defects of the prior art that there is no obvious judgment basis to show whether a failure occurs in the use process of the folded bridge, and to provide a folded bridge damage monitoring device and method.

[0005] The purpose of the present application can be achieved by the following technical solutions:

[0006] A folded bridge damage monitoring device, comprising a tension sensor and a control module, the folded bridge comprises a plurality of bridge sections connected in sequence, the two ends of adjacent two bridge sections are connected to each other through an angle pin, the angle pins on both sides of the bridge section at the top of the folded bridge are connected to the bridge fixed point through the top steel wire rope, the tension sensor is fixed on the top steel wire rope and connected to the control module;

[0007] Both sides of each bridge section are provided with a fixed snap ring and a connecting steel wire, the upper end of each connecting steel wire is sleeved on the previous connecting steel wire or the top steel wire through the fixed snap ring, and the lower end of each connecting steel wire is fixed on the angle pin at the bottom of the corresponding bridge section;

[0008] The control module collects the tension value transmitted by the tension sensor in real time, and generates a device alarm signal if the tension value is greater than the preset alarm limit value.

[0009] Further, the length of the top steel wire rope and the total length of each connecting steel wire rope and the connected fixing clasp are within 1.05-1.5 times of the length of the corresponding bridge section, so that each fixing clasp has a certain degree of freedom.

[0010] Further, the control module is an electrical control loop or a PLC control module, which is used to determine whether the folding bridge is damaged according to the change of the tension value.

[0011] Further, the number of the tension sensors is at least two, which are respectively fixed on the top steel wire ropes on both sides of the top bridge section of the folding bridge.

[0012] Further, when damage occurs on one side of a bridge section and the bridge section is disconnected from the main body of the folding bridge, the bridge sections below the bridge section fall due to gravity, so that the connecting steel wire rope on the damaged side of the bridge section is tensioned, and the tension is transmitted to the top steel wire rope on the corresponding side through the fixing clasp and the connecting steel wire rope, so that the tension value generated by the gravity of the bridge sections below the bridge section on the damaged side is transmitted to the tension sensor of the top steel wire rope, and the control module generates an alarm signal when the tension value is triggered.

[0013] Further, the tension sensor is a side pressure type tension sensor.

[0014] The application also provides a folding bridge damage monitoring method of the folding bridge damage monitoring device.

[0015] The tension sensor, the fixing clasp and the connecting steel wire rope are installed on the folding bridge, and the data output end of the tension sensor is connected to the control module;

[0016] The folding bridge is lifted and lowered in sequence, and the change range of the tension value of the tension sensor is recorded, so as to determine the reference value of the tension value;

[0017] The alarm limit value of the tension sensor is set according to the reference value;

[0018] The tension value transmitted by the tension sensor is collected in real time, and the real-time collected tension value is compared with the alarm limit value, and if the tension value is greater than the alarm limit value, an equipment alarm signal is generated.

[0019] Further, during the setting process of the alarm limit value, the folding bridge in the normal state is repeatedly used, the change of the tension value of the tension sensor is observed, and if the alarm is triggered, the alarm limit value is reset until the folding bridge damage monitoring device operates normally.

[0020] Further, the method further comprises: if the tension value of the real-time collected tension sensor triggers an alarm, comparing the tension value with the tension value interval corresponding to the fracture of each bridge section, determining the tension value interval corresponding to the tension value, and thus estimating the damage position of the folded bridge.

[0021] Further, the method for obtaining the tension value interval corresponding to the fracture of each bridge section comprises: generating a mathematical model by recording the tension alarm value corresponding to the fracture of different bridge sections, and thus determining the tension value interval corresponding to the fracture of each bridge section.

[0022] Compared with the prior art, the present application has the following advantages:

[0023] (1) The present application increases the connecting steel wire rope at each section of the folded bridge, the upper end of each connecting steel wire rope is sleeved on the previous section of steel wire rope through the fixed clasp ring, the lower end is fixed on the corresponding angle pin, and a side pressure type tension sensor is installed on the top steel wire rope.

[0024] When the folded bridge is fractured, on the one hand, the connecting steel wire rope at the fracture is tensioned, and the previous section of connecting steel wire rope is also tensioned by the fixed clasp ring, and the tension is sequentially conducted from bottom to top to the top steel wire rope, and the tension sensor on the top steel wire rope monitors the tension of the steel wire rope in real time, and when the folded bridge is fractured, the monitored tension of the steel wire rope will increase, thus triggering an alarm.

[0025] On the other hand, when the folded bridge is fractured, the added connecting steel wire rope can serve as a temporary backup cable to prevent the cable from being damaged by external force and to expand the accident range and threaten the equipment operation, thus saving the repair time for the maintenance personnel.

[0026] (2) The present application can determine different numerical intervals corresponding to the tension sensor when the damage occurs at different bridge connection positions, thus measuring the alarm value when the damage occurs, matching the alarm tension value with the numerical interval, and thus roughly judging the damage position of the folded bridge, which greatly improves the work efficiency and saves manpower in terms of installation and practicability. BRIEF DESCRIPTION OF DRAWINGS

[0027] Fig. 1 is a result schematic view of a folded bridge provided in the background art of the present application;

[0028] Fig. 2 is a structural schematic view of a folded bridge damage monitoring device provided in the embodiment of the present application;

[0029] Fig. 3 is a partial structural side view schematic of a folded bridge damage monitoring device provided in the embodiment of the present application;

[0030] In the figure, 1 is a tension sensor, 2 is a fixed clasp ring, 3 is a connecting steel wire rope, 4 is a folded bridge, 5 is a bridge fixed point, and 6 is an angle pin. DETAILED DESCRIPTION

[0031] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor fall within the scope of protection of the present application.

[0033] It should be noted that: similar reference numerals and letters indicate similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] It should be noted that the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0036] In addition, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0037] Example 1

[0038] As shown in FIG. 2 and FIG. 3, the embodiment provides a folding bridge damage monitoring device, which comprises a tension sensor 1 and a control module, the folding bridge 4 comprises a plurality of bridge sections connected in sequence, the two ends of each two adjacent bridge sections are connected to each other through an angle pin 6, the angle pins 6 on both sides of the bridge section at the top of the folding bridge 4 are connected to the bridge fixing point 5 through the top steel wire rope respectively, the tension sensor 1 is fixed on the top steel wire rope and connected to the control module.

[0039] Each bridge section is provided with a fixed clasp 2 and a connecting steel wire rope 3 on both sides, the upper end of each connecting steel wire rope 3 is sleeved on the last connecting steel wire rope 3 or the top steel wire rope through the fixed clasp 2, and the lower end of each connecting steel wire rope 3 is fixed on the angle pin 6 at the bottom of the corresponding bridge section.

[0040] The control module collects the tension value transmitted by the tension sensor 1 in real time, and generates a device alarm signal if the tension value is greater than the preset alarm limit value.

[0041] In the prior art, each section of the folding bridge is connected through an angle pin and can move up and down on the folding bridge, and in the present embodiment, a fixed clasp is added at the connection of each section of the folding bridge, and the adjacent two sections of the folding bridge are connected by a steel wire rope, the upper end of the next section of the steel wire rope is fixed on the last section of the steel wire rope through the fixed clasp, and the fixed clasp on the steel wire rope has a certain degree of freedom, which can prevent the folding bridge from jamming during lifting.

[0042] The side pressure type tension sensor is fixed on the top steel wire rope, and by adding the side pressure type tension sensor, the discrimination of the folding bridge failure can be achieved: in normal working condition, each section of the steel wire rope is not stressed, and the tension sensor value is normal. When the folding bridge fails, the steel wire rope is stressed and tensioned due to gravity, the tension sensor value becomes large, the device alarms, and the operation is stopped.

[0043] Specifically, the length of the top steel wire rope and the total length of each connecting steel wire rope 3 and the connecting fixed clasp 2 are within 1.05-1.5 times the length of the corresponding bridge section, so that each fixed clasp 2 has a certain degree of freedom.

[0044] The number of tension sensors 1 is at least two, which are respectively fixed on the top steel wire ropes on both sides of the top bridge section of the folding bridge 4.

[0045] The tension sensor 1 can be a strain sensor, a capacitive sensor, an inductive sensor, a resistance sensor, a side pressure type tension sensor, etc. capable of measuring the tension of the steel wire rope, and in the present embodiment, a side pressure type tension sensor is adopted.

[0046] Optionally, the control module is an electrical control loop or a PLC control module, which is used to determine whether the folding bridge 4 is damaged according to the change of the tension value.

[0047] Working principle: when a bridge section on one side is damaged and disconnected from the main body of the folding bridge 4, the bridge sections below it will fall due to gravity, causing the connecting steel wire rope 3 on the damaged side to be tensioned, and through the fixed snap ring 2, the upper connecting steel wire rope 3 is also tensioned, and the tensioning force is transmitted through each connecting steel wire rope 3 from bottom to top, until the corresponding top steel wire rope is tensioned, causing the gravity of the bridge sections below to act on the tension sensor 1 of the top steel wire rope, generating a tension value that triggers the control module to generate an alarm signal.

[0048] Examples:

[0049] When the first and second folding bridge left side connection is damaged and falls off, at this time the second section bridge starts to fall down due to gravity, the left second section steel wire rope (from top to bottom) is tensioned, at the same time the left first section steel wire rope is tensioned, the corresponding left tension sensor value changes, at this time the tension sensor value is the force of the second section bridge starting to fall down, so that the tension sensor value change can be used to judge whether the folding bridge is damaged. Similarly, when the second and third folding bridge connection is damaged, the left third section steel wire rope (from top to bottom) is tensioned, at the same time the left second and first section steel wire ropes are tensioned, the corresponding left tension sensor value changes, at this time the tension sensor value is the force of the third section bridge starting to fall down. By analogy, the folding bridge has 16 sections.

[0050] Right side the same.

[0051] Example 2

[0052] The embodiment provides a folding bridge damage monitoring method of the folding bridge damage monitoring device of example 1, comprising the following steps:

[0053] Install the tension sensor 1, the fixed snap ring 2 and the connecting steel wire rope 3 on the folding bridge 4, and connect the data output end of the tension sensor 1 to the control module;

[0054] Raise and lower the folding bridge 4 in turn, record the value change range of the tension sensor 1, and determine the tension value reference value;

[0055] Set the alarm limit value of the tension sensor 1 according to the reference value;

[0056] Real-time acquisition of the tension value transmitted by the tension sensor 1, comparison of the real-time acquisition tension value with the alarm limit value, if the tension value is greater than the alarm limit value, an equipment alarm signal is generated.

[0057] Optionally, during the setting process of the alarm limit value, the folded bridge 4 in normal state is repeatedly used to observe the value change of the tension sensor 1, if the alarm is triggered, the alarm limit value is reset until the folded bridge damage monitoring device operates normally.

[0058] The embodiment provides a process example of the above method, as follows:

[0059] S1: install the steel wire rope, the fixed snap ring, and the side pressure type tension sensor;

[0060] S2: signal access to the coal conveying process control system;

[0061] S3: according to the actual situation on site, the folded bridge is lifted in turn, and the value change range (reference value) of the tension sensor is recorded;

[0062] S4: set the alarm limit value of the tension sensor according to the reference value;

[0063] S5: start the equipment, observe the value change of the tension sensor, and whether the alarm is triggered. If the equipment operates normally, it is put into use. If the alarm is triggered, return to S4;

[0064] S6: cycle S4 to S5 until the equipment operates normally.

[0065] Preferably, the method further comprises: if the tension value of the tension sensor 1 collected in real time triggers the alarm, comparing the tension value with the tension value interval corresponding to the fracture of each bridge section to determine the tension value interval corresponding to the tension value, thereby estimating the damage position of the folded bridge 4.

[0066] The method for obtaining the tension value interval corresponding to the fracture of each bridge section comprises: recording the tension alarm values corresponding to the fracture of different bridge sections, thereby generating a mathematical model to determine the tension value interval corresponding to the fracture of each bridge section.

[0067] That is, when the damage occurs at the connection of different bridges, the position of the folded bridge damage can be roughly judged through different value intervals of the tension sensor, and different fault points can be judged through one sensor, which greatly improves the work efficiency and saves manpower in terms of installation and practicability.

[0068] The acquisition method of the value interval can be through long-time monitoring to record the tension alarm values of the falling of different bridges, and a mathematical model can be generated to help maintenance personnel accurately judge which equipment fault occurs falling.

[0069] The preferred embodiments of the present application have been described above in detail. It should be understood that modifications and variations to the preferred embodiments could be made by those skilled in the art in light of the teachings above. It is therefore contemplated that the application can encompass other variations and modifications that fall within the scope of the claims.

Claims

1. A folding cable tray damage monitoring device, characterized in that, The folding cable tray (4) includes a tension sensor (1) and a control module. The folding cable tray (4) includes multiple cable tray sections connected in sequence. The two ends of two adjacent cable tray sections are connected to each other by corner pins (6). The corner pins (6) on both sides of the cable tray section at the top of the folding cable tray (4) are respectively connected to the cable tray fixing point (5) by the top steel wire rope. The tension sensor (1) is fixed on the top steel wire rope and connected to the control module. Each cable tray section is provided with a fixing ring (2) and a connecting wire rope (3) on both sides. The upper end of each connecting wire rope (3) is sleeved on the upper connecting wire rope (3) or the top wire rope through the fixing ring (2). The lower end of each connecting wire rope (3) is fixed on the corner pin (6) at the bottom of the corresponding cable tray section. The control module collects the tension value transmitted by the tension sensor (1) in real time. If the tension value is greater than the preset alarm limit, an alarm signal is generated.

2. The folding cable tray damage monitoring device according to claim 1, characterized in that, The length of the top wire rope, and the total length of each connecting wire rope (3) and the connecting fixing ring (2), are all within 1.05 to 1.5 times the length of the corresponding bridge section, so that each fixing ring (2) has a certain degree of freedom.

3. The folding cable tray damage monitoring device according to claim 1, characterized in that, The control module is an electrical control circuit or a PLC control module, used to determine whether the folding cable tray (4) is damaged based on the change in tension value.

4. The folding cable tray damage monitoring device according to claim 1, characterized in that, The number of tension sensors (1) is at least two, which are fixed on the top wire ropes on both sides of the top bridge section of the folding bridge (4).

5. The folding cable tray damage monitoring device according to claim 1, characterized in that, When one side of a cable tray section is damaged and disconnected from the main body of the folding cable tray (4), the cable tray sections below that section fall due to gravity, causing the connecting steel wire rope (3) on the damaged side of the cable tray section to be tightened. It also drives the connecting steel wire rope (3) above to be tightened through the fixing ring (2), and the tension is transmitted from bottom to top through each connecting steel wire rope (3) until the top steel wire rope on the corresponding side is tightened. This causes the gravity of the cable tray section below that section to act on the tension sensor (1) of the top steel wire rope, and the resulting tension value triggers the control module to generate an alarm signal.

6. The folding cable tray damage monitoring device according to claim 1, characterized in that, The tension sensor (1) is a side-pressure type tension sensor.

7. A method for monitoring damage to folding cable trays using a folding cable tray damage monitoring device as described in any one of claims 1-6, characterized in that, Includes the following steps: Install a tension sensor (1), a fixing ring (2), and a connecting wire rope (3) on the folding cable tray (4), and connect the data output terminal of the tension sensor (1) to the control module; The folding cable tray (4) is raised and lowered sequentially, and the range of changes in the tension sensor (1) is recorded to determine the reference value of the tension value. The alarm limit of the tension sensor (1) is set according to the reference value; The tension value transmitted by the tension sensor (1) is collected in real time. The collected tension value is compared with the alarm limit. If the tension value is greater than the alarm limit, an alarm signal is generated.

8. The method according to claim 7, characterized in that, During the setting of the alarm limit, the folding cable tray (4) in normal state is repeatedly used to observe the change in the value of the tension sensor (1). If an alarm is triggered, the alarm limit is reset until the monitoring device for damage to the folding cable tray is operating normally.

9. The method according to claim 7, characterized in that, The method further includes: if the tension value of the tension sensor (1) collected in real time triggers an alarm, the tension value is compared with the tension value range corresponding to the breakage of each cable tray section to determine the tension value range corresponding to the tension value, thereby predicting the damage location of the folding cable tray (4).

10. The method according to claim 9, characterized in that, The method for obtaining the tension value range corresponding to the fracture of each cable tray section includes: generating a mathematical model by recording the tension alarm values ​​corresponding to the fracture of different cable tray sections, and determining the tension value range corresponding to the fracture of each cable tray section.

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