Deflection data field acquisition device for railway bridge monitoring

Abstract

The invention discloses a deflection data field acquisition device for railway bridge monitoring, which comprises a data acquisition rod, the length of the data acquisition rod is the same as that of a bridge, the left side and the right side of the data acquisition rod are both provided with fixing mechanisms, and the data acquisition rod is sleeved with a deflection data acquisition mechanism. The deflection data acquisition mechanism is in sliding connection with the data acquisition rod, and the deflection data acquisition mechanism is used for acquiring deflection data of the bridge. If the bridge is concavely deformed, the distance between the data acquisition rod and the surface of the bridge is changed, so that the contact area between the arc-shaped brake pad and the bridge floor is changed in the sliding process of the guide sliding pipe, the resistance in the moving process of the guide sliding pipe is changed, and the speed of the guide sliding pipe is continuously changed; the deflection data of a certain point of the bridge can be calculated through the conversion relation between the speed of the guide sliding pipe and the deflection, the method is very easy and convenient to use, deflection information of a plurality of points of the bridge can be rapidly obtained, and time and labor are saved.

Description

Technical Field

[0001] The invention relates to the field of railway bridge monitoring, and in particular to a deflection data field collection device for railway bridge monitoring. Background Art

[0002] Deflection is the linear displacement of the rod axis in a direction perpendicular to the axis or the linear displacement of the mid-surface of the plate shell in a direction perpendicular to the mid-surface when subjected to force or non-uniform temperature changes. During the use of railway bridges, they will be subjected to the pressure of trains and will undergo a certain shape of concave deformation. In order to monitor this deformation, it is necessary to regularly collect the deflection data of railway bridges.

[0003] At present, the deflection measuring instrument is commonly used to measure deflection. For example, the patent with application number 202321987184.6 discloses a structural deflection measuring instrument, which includes a laser transmitter, a laser receiving plate arranged toward the laser transmitter to receive the laser beam, and a longitudinal connection component connected to the top of the laser receiving plate to connect the laser receiving plate to the top surface of the building structure; the longitudinal connection component includes a telescopic sleeve and an extension rod, and a slide groove and a plurality of limit grooves are provided on the inner wall of the telescopic sleeve. The extension rod is provided with a slider slidably connected to the slide groove, and the slider can rotate circumferentially into the limit groove. The structural deflection measuring instrument provided by the utility model connects the laser receiving plate to the bottom of the building structure through the longitudinal connection component. When the building structure is deformed and produces a certain deflection, the laser receiving plate and the longitudinal connection component move downward synchronously, and the position where the laser beam falls on the laser receiving plate will change, so that the deflection change of the building structure can be known. The above structure is simple to operate and ensures the accuracy of the building structure deflection monitoring.

[0004] The patent with application number 202022055964.X discloses a bridge deflection measuring instrument, which relates to the technical field of bridge measuring devices. In view of the inconvenience of existing installation and use, the following scheme is proposed, which includes a base plate, a protective cover is slidably sleeved on the upper side of the base plate, and limiting plates rotatably connected to the base plate are arranged around the protective cover, wherein one side of two of the limiting plates is rotatably connected with a sealing cover, a solar panel is fixedly connected to the limiting plate, and the lower side of the base plate is rotatably connected with a plurality of support rods, the lower end of the support rod is fixedly connected with an adjustment device, one side of the support rod is slidably connected with a rotating rod, and the other end of the rotating rod is slidably connected to one of the limiting plates. The utility model has a simple structure and is easy to use. It can well protect the main body of the measuring instrument. At the same time, it is convenient and quick to install, reduces the difficulty of installation, makes installation more convenient, and can better protect the measurement when stored, thereby extending the service life of the device.

[0005] However, the above-mentioned deflection measuring instrument and similar deflection measuring instruments can basically only perform single-point measurement. If it is necessary to detect and collect data at multiple measurement points of the bridge, the operation is relatively cumbersome and requires a lot of time and manpower, and improvements are needed. Summary of the invention

[0006] The purpose of the present invention is to provide a deflection data field collection device for railway bridge monitoring to solve the above technical problems.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] A deflection data field collection device for railway bridge monitoring comprises a data collection rod, the data collection rod is the same length as the bridge, fixing mechanisms are arranged on both sides of the data collection rod, a deflection data collection mechanism is sleeved on the data collection rod, the deflection data collection mechanism is slidably connected to the data collection rod, and the deflection data collection mechanism is used to collect deflection data of the bridge.

[0009] Preferably, the fixing mechanism includes a support block, support blocks are provided on both sides of the data acquisition rod, the top of the support block is connected to the data acquisition rod through a hinge, a mounting plate is provided at the bottom of the support block, the support block is fixedly connected to the mounting plate, a plurality of fixing screws are threadedly connected on the mounting plate, and the fixing screws are threadedly connected to the bridge.

[0010] Preferably, the deflection data acquisition mechanism comprises a guide slide tube, the guide slide tube is sleeved on the data acquisition rod, and the guide slide tube is slidably connected to the data acquisition rod.

[0011] Preferably, both the front and rear sides of the data acquisition rod are provided with a slide groove, the slide groove is arranged along the axial direction of the data acquisition rod, a slider is arranged in the slide groove, the slider is slidably matched with the slide groove, and the slider is fixedly connected to the guide slide tube.

[0012] Preferably, the deflection data acquisition mechanism also includes a fixed horizontal plate, which is located above the guide slide tube, and a plurality of fixing screws are threadedly connected to the fixed horizontal plate, and the fixing screws are threadedly connected to the guide slide tube, and a fixed vertical plate is provided on one side of the fixed horizontal plate, and the bottom of the fixed vertical plate is fixedly connected to the left end of the fixed horizontal plate.

[0013] Preferably, the deflection data acquisition mechanism also includes a drive motor, which is located on the left side of the fixed vertical plate and is fixedly connected to the fixed vertical plate. A drive gear is provided on the side where the power output end of the drive motor is located, and the drive gear is sleeved on the power output end and is fixedly connected to the power output end. A plurality of tooth grooves are provided on the top of the data acquisition rod, and the plurality of tooth grooves are equidistantly arranged along the axial direction of the data acquisition rod, and the drive gear is meshed with the tooth grooves.

[0014] Preferably, a speed sensor is arranged on the front of the driving motor, and the speed sensor is fixedly connected to the driving motor; a GPS locator is arranged on the top of the driving motor, and the GPS locator is fixedly connected to the driving motor.

[0015] Preferably, the deflection data acquisition mechanism also includes a guide rod, which is located below the guide slide tube, the upper end of the guide rod is fixedly connected to the bottom of the guide slide tube, a guide tube is sleeved on the outer side of the guide rod, the guide tube is slidably connected to the guide rod, a buffer spring is sleeved on the guide rod, the upper end of the buffer spring is fixedly connected to the guide slide tube, and the lower end of the buffer spring is fixedly connected to the upper end of the guide tube.

[0016] Preferably, a resistance mechanism is installed at the lower end of the guide tube.

[0017] Preferably, the resistance mechanism includes a connecting plate, which is located below the guide tube and fixedly connected to the lower end of the guide tube. An elastic arc-shaped brake pad is arranged below the connecting plate, and fixing blocks are arranged on both the front and rear sides of the arc-shaped brake pad, and the fixing block is fixedly connected to the arc-shaped brake pad. A plurality of connecting screws are threadedly connected to the fixing block, and the connecting screws are threadedly connected to the connecting plate.

[0018] The beneficial effects of the present invention are:

[0019] The present invention designs a deflection data field collection device for railway bridge monitoring, so that the data collection rod is parallel to the bridge surface, and then the guide slide is regularly driven to slide along the data collection rod. If the bridge is concavely deformed, the distance between the data collection rod and the bridge surface changes, so that during the sliding of the guide slide, the contact area between the arc brake pad and the bridge surface changes, thereby changing the resistance during the movement of the guide slide, and further changing the speed of the guide slide. The deflection data of a certain point of the bridge can be calculated through the conversion relationship between the speed of the guide slide and the deflection. The present invention is very simple to use, and the deflection information of several points of the bridge can be quickly obtained, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The structure of a deflection data field acquisition device for railway bridge monitoring according to the present invention is shown in FIG. Figure 1 ;

[0021] Figure 2 The invention is a deflection data field collection device for railway bridge monitoring Figure 1 A magnified schematic diagram of part A;

[0022] Figure 3 The invention is a deflection data field collection device for railway bridge monitoring Figure 1A magnified schematic diagram of part B;

[0023] Figure 4 The invention is a deflection data field collection device for railway bridge monitoring Figure 1 The structure of Figure 2 ;

[0024] Figure 5 The invention is a deflection data field collection device for railway bridge monitoring Figure 4 An enlarged schematic diagram of part C of FIG.

[0025] Figure numerals: 1. data acquisition rod; 2. mounting plate; 3. fixing screw; 4. support block; 5. hinge; 6. slide groove; 7. tooth groove; 8. driving gear; 9. fixed vertical plate; 10. fixed horizontal plate; 11. fixing screw; 12. guide slide tube; 13. buffer spring; 14. guide tube; 15. connecting plate; 16. arc brake pad; 17. guide rod; 18. GPS locator; 19. driving motor; 20. slider; 21. connecting screw; 23. fixing block; 24. speed sensor. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0027] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected 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 the present invention can be understood according to specific circumstances.

[0029] Example 1

[0030] like Figure 1-5As shown, a deflection data field collection device for railway bridge monitoring includes a data collection rod 1. The data collection rod 1 has the same length as the bridge. Fixing mechanisms are provided on both sides of the data collection rod 1. A deflection data collection mechanism is sleeved on the data collection rod 1. The deflection data collection mechanism is slidably connected to the data collection rod 1. The deflection data collection mechanism is used to collect the deflection data of the bridge.

[0031] The fixing mechanism includes a support block 4, and support blocks 4 are arranged on both sides of the left and right sides of the data acquisition rod 1. The top of the support block 4 is connected to the data acquisition rod 1 through a hinge 5, and a mounting plate 2 is arranged at the bottom of the support block 4. The support block 4 is fixedly connected to the mounting plate 2, and a plurality of fixing screws 3 are threadedly connected on the mounting plate 2, and the fixing screws 3 are threadedly connected to the bridge.

[0032] When in use, the fixing mechanisms on the left and right sides of the data acquisition rod 1 are placed at the left and right ends of the bridge respectively, so that the data acquisition rod 1 is parallel to the surface of the bridge, and then the mounting plate 2 is threadedly connected to the bridge through the fixing screw 3, so that the device is fixedly installed on one side of the front beam.

[0033] Example 2

[0034] like Figure 1-5 As shown, when other parts are the same as those of Example 1, the difference between this embodiment and Example 1 is that the deflection data acquisition mechanism includes a guide slide tube 12, which is sleeved on the data acquisition rod 1, and the guide slide tube 12 is slidably connected to the data acquisition rod 1. The deflection data acquisition mechanism also includes a fixed horizontal plate 10, which is located above the guide slide tube 12, and a plurality of fixing screws 11 are threadedly connected to the fixed horizontal plate 10, and the fixing screws 11 are threadedly connected to the guide slide tube 12. A fixed vertical plate 9 is provided on one side of the fixed horizontal plate 10, and the bottom of the fixed vertical plate 9 is fixedly connected to the left end of the fixed horizontal plate 10. The deflection data acquisition mechanism also includes a drive motor 19, which is located on the left side of the fixed vertical plate 9 and is fixedly connected to the fixed vertical plate 9. A drive gear 8 is provided on the side where the power output end of the drive motor 19 is located, and the drive gear 8 is sleeved on the power output end and is fixedly connected to the power output end. A plurality of tooth grooves 7 are provided on the top of the data acquisition rod 1, and the plurality of tooth grooves 7 are equidistantly arranged along the axial direction of the data acquisition rod 1, and the drive gear 8 meshes with the tooth grooves 7. A speed sensor 24 is provided on the front of the drive motor 19, and the speed sensor 24 is fixedly connected to the drive motor 19. A GPS locator 18 is provided on the top of the drive motor 19, and the GPS locator 18 is fixedly connected to the drive motor 19. The deflection data acquisition mechanism also includes a guide rod 17, which is located below the guide slide tube 12. The upper end of the guide rod 17 is fixedly connected to the bottom of the guide slide tube 12. A guide tube 14 is sleeved on the outer side of the guide rod 17. The guide tube 14 is slidably connected to the guide rod 17. A buffer spring 13 is sleeved on the guide rod 17. The upper end of the buffer spring 13 is fixedly connected to the guide slide tube 12, and the lower end of the buffer spring 13 is fixedly connected to the upper end of the guide tube 14.

[0035] A resistance mechanism is installed at the lower end of the guide tube 14. The resistance mechanism includes a connecting plate 15, which is located below the guide tube 14 and fixedly connected to the lower end of the guide tube 14. An elastic arc-shaped brake pad 16 is arranged below the connecting plate 15, and a fixing block 23 is arranged on both the front and rear sides of the arc-shaped brake pad 16, and the fixing block 23 is fixedly connected to the arc-shaped brake pad 16. A plurality of connecting screws 21 are threadedly connected to the fixing block 23, and the connecting screws 21 are threadedly connected to the connecting plate 15.

[0036] When in use, the drive motor 19 is started, so that the power output end of the drive motor 19 drives the drive gear 8 to rotate. Since the drive gear 8 is meshed with the tooth groove 7 on the data acquisition rod 1, the drive gear 8 drives the guide slide tube 12 to slide from the left end to the right end along the data acquisition rod 1, and the arc brake pad 16 contacts and slides synchronously with the bridge surface. If the bridge is concavely deformed, the distance between the data acquisition rod 1 and the bridge surface changes. In the sliding process of the guide slide tube 12, the closer the distance between the data acquisition rod 1 and the bridge surface is, the greater the upward movement distance of the guide tube 14 is, and the slower the brake pad 16 is. The shorter the impact spring 13 is compressed by the guide tube 14, the greater the elastic force applied by the buffer spring 13 to the arc brake pad 16 through the guide tube 14 and the connecting plate 15, the greater the amplitude of the extrusion deformation of the arc brake pad 16, the larger the contact area between the arc brake pad 16 and the bridge deck, the greater the friction force, and the slower the sliding speed of the guide slide tube 12; in the process of the guide slide tube 12 sliding along the data acquisition rod 1, the GPS locator records the current position information of the bridge deck where the guide slide tube 12 is located, and the speed sensor 24 records the speed at the current position.

[0037] Through the conversion relationship between speed and deflection, the deflection data of a certain point on the bridge can be measured. For example, through manual measurement and collection, when the speed is 0.3m / s, the corresponding deflection data is 3cm. For every 0.01m / s increase in speed, the corresponding deflection data increases by 0.2cm. For every 0.01m / s decrease in speed, the corresponding deflection data decreases by 0.2cm. The next time the deflection data of the bridge is measured, the deflection data at a certain point on the bridge can be directly obtained through the conversion relationship between speed and deflection.

[0038] Example 3

[0039] like Figure 1-5 As shown, when other parts are the same as those in Example 2, the difference between this embodiment and Example 2 is that a slide groove 6 is provided on both the front and rear sides of the data acquisition rod 1, the slide groove 6 is arranged axially along the data acquisition rod 1, a slider 20 is arranged in the slide groove 6, the slider 20 is slidably matched with the slide groove 6, and the slider 20 is fixedly connected to the guide slide tube 12.

[0040] By providing the sliding block 20 and the sliding groove 6, the guide sliding tube 12 can rotate during the sliding process, thereby preventing the arc-shaped brake pad 16 from being separated from the bridge deck.

[0041] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A deflection data field collection device for railway bridge monitoring, characterized in that: The invention comprises a data acquisition rod (1), the data acquisition rod (1) having the same length as the bridge, a fixing mechanism being arranged on both the left and right sides of the data acquisition rod (1), a deflection data acquisition mechanism being sleeved on the data acquisition rod (1), the deflection data acquisition mechanism being slidably connected to the data acquisition rod (1), and the deflection data acquisition mechanism being used to collect deflection data of the bridge.

2. The deflection data field acquisition device for railway bridge monitoring according to claim 1 is characterized in that: The fixing mechanism comprises a support block (4), and support blocks (4) are arranged on both sides of the left and right sides of the data acquisition rod (1). The top of the support block (4) is connected to the data acquisition rod (1) via a hinge (5), and a mounting plate (2) is arranged at the bottom of the support block (4). The support block (4) is fixedly connected to the mounting plate (2), and a plurality of fixing screws (3) are threadedly connected to the mounting plate (2), and the fixing screws (3) are threadedly connected to the bridge.

3. The deflection data field collection device for railway bridge monitoring according to claim 2 is characterized in that: The deflection data acquisition mechanism comprises a guide slide tube (12), the guide slide tube (12) is sleeved on the data acquisition rod (1), and the guide slide tube (12) is slidably connected to the data acquisition rod (1).

4. The deflection data field collection device for railway bridge monitoring according to claim 3 is characterized in that: The data acquisition rod (1) is provided with a slide groove (6) on both the front and rear sides. The slide groove (6) is arranged along the axial direction of the data acquisition rod (1). A slider (20) is arranged in the slide groove (6). The slider (20) is slidably matched with the slide groove (6). The slider (20) is fixedly connected to the guide slide tube (12).

5. The deflection data field collection device for railway bridge monitoring according to claim 4 is characterized in that: The deflection data acquisition mechanism also includes a fixed transverse plate (10), the fixed transverse plate (10) is located above the guide slide tube (12), a plurality of fixing screws (11) are threadedly connected to the fixed transverse plate (10), the fixing screws (11) are threadedly connected to the guide slide tube (12), a fixed vertical plate (9) is arranged on one side of the fixed transverse plate (10), and the bottom of the fixed vertical plate (9) is fixedly connected to the left end of the fixed transverse plate (10).

6. The deflection data field collection device for railway bridge monitoring according to claim 5 is characterized in that: The deflection data acquisition mechanism also includes a drive motor (19), the drive motor (19) is located on the left side of the fixed vertical plate (9), the drive motor (19) is fixedly connected to the fixed vertical plate (9), a drive gear (8) is provided on the side where the power output end of the drive motor (19) is located, the drive gear (8) is sleeved on the power output end, the drive gear (8) is fixedly connected to the power output end, a plurality of tooth grooves (7) are provided on the top of the data acquisition rod (1), the plurality of tooth grooves (7) are equidistantly arranged along the axial direction of the data acquisition rod (1), and the drive gear (8) is meshed with the tooth grooves (7).

7. The deflection data field collection device for railway bridge monitoring according to claim 6 is characterized in that: A speed sensor (24) is arranged on the front of the drive motor (19), and the speed sensor (24) is fixedly connected to the drive motor (19). A GPS locator (18) is arranged on the top of the drive motor (19), and the GPS locator (18) is fixedly connected to the drive motor (19).

8. The deflection data field collection device for railway bridge monitoring according to claim 7 is characterized in that: The deflection data acquisition mechanism also includes a guide rod (17), the guide rod (17) is located below the guide slide tube (12), the upper end of the guide rod (17) is fixedly connected to the bottom of the guide slide tube (12), a guide tube (14) is sleeved on the outer side of the guide rod (17), the guide tube (14) is slidably connected to the guide rod (17), a buffer spring (13) is sleeved on the guide rod (17), the upper end of the buffer spring (13) is fixedly connected to the guide slide tube (12), and the lower end of the buffer spring (13) is fixedly connected to the upper end of the guide tube (14).

9. The deflection data field collection device for railway bridge monitoring according to claim 8, characterized in that: A resistance mechanism is installed at the lower end of the guide tube (14).

10. The deflection data field collection device for railway bridge monitoring according to claim 9, characterized in that: The resistance mechanism comprises a connecting plate (15), the connecting plate (15) is located below the guide tube (14), the connecting plate (15) is fixedly connected to the lower end of the guide tube (14), an elastic arc-shaped brake pad (16) is arranged below the connecting plate (15), and fixing blocks (23) are arranged on both the front and rear sides of the arc-shaped brake pad (16), the fixing blocks (23) are fixedly connected to the arc-shaped brake pad (16), and a plurality of connecting screws (21) are threadedly connected to the fixing blocks (23), and the connecting screws (21) are threadedly connected to the connecting plate (15).

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